HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
Contents
Contents
1 SCCP Measurement...................................................................................................................1-1
1.1 Overview of SCCP Measurement .................................................................................................................1-2
1.2 SCCP OSP Measurement ..............................................................................................................................1-2
1.2.1 Overview of SCCP OSP Measurement ................................................................................................1-2
1.2.2 Number of Sent UDT Messages ..........................................................................................................1-3
1.2.3 Number of Received UDT Messages...................................................................................................1-3
1.2.4 Number of Sent XUDT Messages........................................................................................................1-4
1.2.5 Number of Received XUDT Messages................................................................................................1-4
1.2.6 Number of Sent CR Messages .............................................................................................................1-4
1.2.7 Number of Received CR Messages......................................................................................................1-5
1.2.8 Number of Sent CREF Messages.........................................................................................................1-5
1.2.9 Number of Received CREF Messages .................................................................................................1-6
1.2.10 Ratio of CREF by Peer SCCP............................................................................................................1-6
1.2.11 Ratio of CREF by Local SCCP ..........................................................................................................1-6
1.2.12 Received CC Messages......................................................................................................................1-7
1.2.13 Sent CC Messages..............................................................................................................................1-7
1.2.14 Sent DT1 Messages............................................................................................................................1-8
1.2.15 Received DT1 Messages....................................................................................................................1-8
1.2.16 Sent RLSD Messages.........................................................................................................................1-8
1.2.17 Received RLSD Messages .................................................................................................................1-9
1.2.18 Sent RLC Messages ...........................................................................................................................1-9
1.2.19 Received RLC Messages .................................................................................................................1-10
2 MTP3 Measurement ..................................................................................................................2-1
2.1 Overview of MTP3 Measurement.................................................................................................................2-2
2.2 MTP3 Link Measurement .............................................................................................................................2-2
2.2.1 Overview..............................................................................................................................................2-2
2.2.2 In-Service Duration of MTP3 Link......................................................................................................2-3
2.2.3 Out-of-Service Duration of MTP3 Link...............................................................................................2-4
2.2.4 Duration of MTP3 Link Fault ..............................................................................................................2-4
2.2.5 Duration of MTP3 Link Local Inhibition.............................................................................................2-4
2.2.6 Duration of MTP3 Link Remote Inhibition .........................................................................................2-5
2.2.7 Duration of MTP3 Link Remote Processor Fault ................................................................................2-5
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2.2.8 Duration of MTP3 Link Congestion ....................................................................................................2-6
2.2.9 Failures of MTP3 Link for All Reasons ...............................................................................................2-6
2.2.10 MTP3 Link Local Inhibitions ............................................................................................................2-6
2.2.11 MTP3 Link Remote Inhibitions .........................................................................................................2-7
2.2.12 MTP3 Link Remote Processor Failures .............................................................................................2-7
2.2.13 MTP3 Link Local Switchovers ..........................................................................................................2-8
2.2.14 MSUs Sent on MTP3 Link.................................................................................................................2-8
2.2.15 MSUs Received on MTP3 Link.........................................................................................................2-9
2.2.16 MTP3 Link Congestions ....................................................................................................................2-9
2.2.17 Discarded MSUs During Link Congestion ........................................................................................2-9
2.2.18 Transfer Inhibition Messages Received on MTP3 Link...................................................................2-10
2.2.19 Octets in SIFs or SIOs Sent on MTP3 Link .....................................................................................2-10
2.2.20 Octets in SIFs and SIOs Received by MTP3 Link........................................................................... 2-11
2.2.21 64 kbit/s Timeslots Occupied by a Signaling Link........................................................................... 2-11
2.2.22 Ratio of Transmit Bandwidth to Total Bandwidth ........................................................................... 2-11
2.2.23 Ratio of Receive Bandwidth to Total Bandwidth.............................................................................2-12
2.2.24 Bytes of MTP2 Message Head in MSU Messages on MTP3 Link ..................................................2-12
3 LAPD Measurement ..................................................................................................................3-1
3.1 Overview of LAPD Measurement.................................................................................................................3-2
3.2 LAPD Link Measurement .............................................................................................................................3-2
3.2.1 Overview..............................................................................................................................................3-2
3.2.2 SABME Frames Sent on LAPD Link ..................................................................................................3-3
3.2.3 SABME Frames Received on LAPD Link ..........................................................................................3-4
3.2.4 REJ Frames Sent on LAPD Link .........................................................................................................3-4
3.2.5 REJ Frames Received on LAPD Link .................................................................................................3-4
3.2.6 RNR Frames Sent on LAPD Link........................................................................................................3-5
3.2.7 RNR Frames Received on LAPD Link ................................................................................................3-5
3.2.8 I Frames Resent on LAPD Link...........................................................................................................3-6
3.2.9 Incorrect I Frames Received on LAPD Link .......................................................................................3-6
3.2.10 I Frames Received on LAPD Link from Application Layer ..............................................................3-6
3.2.11 I Frames Sent on LAPD Link.............................................................................................................3-7
3.2.12 I Frames Received by LAPD Link.....................................................................................................3-7
3.2.13 I Frames Discarded by LAPD Link ...................................................................................................3-8
3.2.14 UA Frames Sent on LAPD Link ........................................................................................................3-8
3.2.15 UA Frames Received by LAPD Link.................................................................................................3-8
3.2.16 UI Frames Received by LAPD Link..................................................................................................3-9
4 System Load Measurement ......................................................................................................4-1
4.1 Overview of System Load Measurement ......................................................................................................4-2
4.2 CPU Usage Measurement .............................................................................................................................4-2
4.2.1 Overview..............................................................................................................................................4-2
4.2.2 Mean CPU Usage.................................................................................................................................4-3
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4.2.3 Maximum CPU Usage .........................................................................................................................4-3
5 BTSM Management...................................................................................................................5-1
5.1 Overview of BTSM Measurement ................................................................................................................5-2
5.2 BTS State Measurement per BTS..................................................................................................................5-2
5.2.1 Overview..............................................................................................................................................5-2
5.2.2 Successful BTS Initializations .............................................................................................................5-3
5.2.3 Failed BTS Initializations ....................................................................................................................5-3
5.2.4 BTS OML Disruption Duration ...........................................................................................................5-4
5.2.5 BTS Out-of-Service Duration ..............................................................................................................5-4
5.2.6 BTS Availability...................................................................................................................................5-4
5.2.7 BTS In-Service Duration .....................................................................................................................5-5
5.3 BTS Configuration Measurement per BM Subrack ......................................................................................5-5
5.3.1 Overview..............................................................................................................................................5-5
5.3.2 Activated BTSs ....................................................................................................................................5-6
5.3.3 Available BTSs.....................................................................................................................................5-6
5.4 Cell State Measurement per Cell...................................................................................................................5-6
5.4.1 Overview..............................................................................................................................................5-6
5.4.2 Successful Cell Initializations ..............................................................................................................5-7
5.4.3 Failed Cell Initializations .....................................................................................................................5-7
5.4.4 Cell BCCH Mutual Aid........................................................................................................................5-8
5.4.5 Recoveries after Cell BCCH Mutual Aid.............................................................................................5-8
5.4.6 Cell Baseband Hopping Mutual Aid ....................................................................................................5-9
5.4.7 Recoveries After Cell Baseband Hopping Mutual Aid ........................................................................5-9
5.4.8 Cell Out-of-Service Duration...............................................................................................................5-9
5.4.9 Cell Availability .................................................................................................................................5-10
5.4.10 Cell In-Service Duration ..................................................................................................................5-10
5.5 Cell Configuration Measurement per BM Subrack..................................................................................... 5-11
5.5.1 Overview............................................................................................................................................ 5-11
5.5.2 Activated Cells ................................................................................................................................... 5-11
5.5.3 Available Cells ................................................................................................................................... 5-11
5.6 TRX State Measurement per TRX ..............................................................................................................5-12
5.6.1 Overview............................................................................................................................................5-12
5.6.2 TRX Out-of-Service Duration............................................................................................................5-12
5.7 TRX Configuration Measurement per BM Subrack....................................................................................5-13
5.7.1 Overview............................................................................................................................................5-13
5.7.2 Activated TRXs..................................................................................................................................5-13
5.7.3 Available TRXs ..................................................................................................................................5-13
5.7.4 TRX Availability ................................................................................................................................5-14
5.8 CRC Error Measurement per BTS ..............................................................................................................5-14
5.8.1 Overview............................................................................................................................................5-14
5.8.2 Duration of CRC Error on Ports 0 Through 23 ..................................................................................5-15
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5.9 CRC Serious Error Measurement per BTS .................................................................................................5-16
5.9.1 Overview............................................................................................................................................5-16
5.9.2 Duration of Serious CRC Error on Ports 0 Through 23 .....................................................................5-16
5.10 OML Measurement per BTS .....................................................................................................................5-18
5.10.1 Overview..........................................................................................................................................5-18
5.10.2 OML Setup Requests Sent by BTS ..................................................................................................5-19
5.10.3 OML Setup Requests Received by BTS ..........................................................................................5-19
5.10.4 BTS-Sent Rejects to the OML Setup Requests ................................................................................5-20
5.10.5 BTS-Received Rejects to the OML Setup Requests ........................................................................5-20
5.10.6 OML RNR Frames Sent by BTS......................................................................................................5-21
5.10.7 OML RNR Frames Received by BTS..............................................................................................5-21
5.10.8 OML I Frames Resent by BTS.........................................................................................................5-22
5.10.9 OML NRERR Received by BTS .....................................................................................................5-22
5.10.10 OML L3 Data Requests Received by BTS ....................................................................................5-23
5.10.11 OML I Frames Sent by BTS...........................................................................................................5-23
5.10.12 OML I Frames Received by BTS...................................................................................................5-24
5.10.13 Queue Overflows of OML Messages Sent by BTS........................................................................5-24
5.10.14 Erroneously Received OML Long Frames by BTS Physical Layer...............................................5-25
5.10.15 OML Byte Errors Received by BTS Physical Layer......................................................................5-25
5.10.16 OML Discarded Series Received by BTS Physical Layer .............................................................5-26
5.10.17 OML CRC Errors Received by BTS..............................................................................................5-26
5.10.18 L1 and L2 Overflows of BTS OML...............................................................................................5-27
5.10.19 Total OML Frames Received by BTS Physical Layer ...................................................................5-27
5.11 RSL Measurement per TRX ......................................................................................................................5-28
5.11.1 Overview..........................................................................................................................................5-28
5.11.2 RSL Setup Requests Sent from BTS ................................................................................................5-29
5.11.3 RSL Setup Requests Received from BTS ........................................................................................5-29
5.11.4 BTS-Sent Rejects to the RSL Setup Requests Sent by BTS ............................................................5-30
5.11.5 BTS-Received Rejects to the RSL Setup Requests ..........................................................................5-30
5.11.6 RSL RNR Frames Sent by BTS .......................................................................................................5-31
5.11.7 RSL RNR Frames Received by BTS................................................................................................5-31
5.11.8 RSL I Frames Resent by BTS ..........................................................................................................5-32
5.11.9 RSL NRERR Received by BTS .......................................................................................................5-32
5.11.10 RSL Layer 3 Requests Received by BTS.......................................................................................5-33
5.11.11 RSL I Frames Sent by BTS ............................................................................................................5-33
5.11.12 RSL I Frames Received by BTS ....................................................................................................5-34
5.11.13 Queue Overflows of RSL Messages Sent by BTS .........................................................................5-34
5.11.14 Erroneously Received RSL Long Frames by BTS Physical Layer ................................................5-35
5.11.15 RSL Octet Errors Received by BTS Physical Layer ......................................................................5-35
5.11.16 RSL Discarded Sequences Received by BTS Physical Layer........................................................5-36
5.11.17 RSL CRC Errors Received by BTS................................................................................................5-36
5.11.18 L1 and L2 Overflows of BTS RSL ................................................................................................5-37
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5.11.19 Total RSL Frames Received by BTS Physical Layer .....................................................................5-37
6 Resources Measurement ...........................................................................................................6-1
6.1 Overview of Resources Measurement...........................................................................................................6-2
6.2 A Interface Circuit Measurement per DPC....................................................................................................6-2
6.2.1 Overview..............................................................................................................................................6-2
6.2.2 Mean Number of Uninstalled Circuits on the A Interface....................................................................6-3
6.2.3 Mean Number of Faulty Circuits on the A Interface ............................................................................6-3
6.2.4 Mean Number of Circuits in Maintenance State on the A Interface.....................................................6-4
6.2.5 Mean Number of Blocked Circuits on the A Interface.........................................................................6-4
6.2.6 Mean Number of Idle Circuits on the A Interface ................................................................................6-5
6.2.7 Mean Number of Busy Circuits on the A Interface ..............................................................................6-5
6.2.8 Mean Number of Circuits with Uninstalled Peer Circuits on the A Interface ......................................6-6
6.3 TC Measurement per DPC ............................................................................................................................6-6
6.3.1 Overview..............................................................................................................................................6-6
6.3.2 Mean Number of Faulty TC Resources................................................................................................6-7
6.3.3 Mean Number of Idle TC Resources....................................................................................................6-7
6.3.4 Mean Number of Busy TC Resources..................................................................................................6-8
6.4 Pb Interface Circuit Measurement per PCU..................................................................................................6-8
6.4.1 Overview..............................................................................................................................................6-8
6.4.2 Mean Number of Faulty Circuits on the Pb Interface ..........................................................................6-9
6.4.3 Mean Number of Blocked Circuits on the Pb Interface .......................................................................6-9
6.4.4 Mean Number of Idle Circuits on the Pb Interface ............................................................................6-10
6.4.5 Mean Number of Busy Circuits on the Pb Interface ..........................................................................6-10
6.4.6 Mean Number of Circuits in Maintenance State on the Pb Interface ................................................. 6-11
6.5 Ater Interface Circuit Measurement per BM Subrack................................................................................. 6-11
6.5.1 Overview............................................................................................................................................ 6-11
6.5.2 Mean Number of Faulty Circuits on the Ater Interface......................................................................6-12
6.5.3 Mean Number of Idle Circuits on the Ater Interface..........................................................................6-12
6.5.4 Mean Number of Busy Circuits on the Ater Interface........................................................................6-13
7 MSC Measurement ....................................................................................................................7-1
7.1 Overview of MSC Measurement...................................................................................................................7-2
7.2 MSC Measurement per DPC.........................................................................................................................7-2
7.2.1 Overview..............................................................................................................................................7-2
7.2.2 Number of MSC Resets .......................................................................................................................7-2
7.2.3 Number of Messages Received from MSC..........................................................................................7-3
8 CBC Measurement .....................................................................................................................8-1
8.1 Overview of CBC Measurement ...................................................................................................................8-2
8.2 CBC Measurement per BSC .........................................................................................................................8-2
8.2.1 Overview..............................................................................................................................................8-2
8.2.2 WRITE-REPLACE Requests Received by BSC .................................................................................8-3
8.2.3 KILL Requests Received by BSC........................................................................................................8-4
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8.2.4 STATUS-CBCH-QUERY Requests Received by BSC........................................................................8-4
8.2.5 STATUS-MESSAGE-QUERY Requests Received by BSC ................................................................8-4
8.2.6 SET-DRX Requests Received by BSC ................................................................................................8-5
8.2.7 RESET Requests Received by BSC.....................................................................................................8-5
8.2.8 REPORT Responses to WRITE-REPLACE Requests.........................................................................8-6
8.2.9 REJECT Responses to WRITE-REPLACE Requests..........................................................................8-6
8.2.10 REPORT Responses to KILL Requests .............................................................................................8-7
8.2.11 REJECT Responses to KILL Requests ..............................................................................................8-7
8.2.12 REPORT Responses to STATUS-CBCH-QUERY Requests .............................................................8-8
8.2.13 REJECT Responses to STATUS-CBCH-QUERY Requests ..............................................................8-8
8.2.14 REPORT Responses to STATUS-MESSAGE-QUERY Requests......................................................8-9
8.2.15 REJECT Responses to STATUS-MESSAGE-QUERY Requests ......................................................8-9
8.2.16 REPORT Responses to SET-DRX Requests ....................................................................................8-10
8.2.17 REJECT Responses to SET-DRX Requests.....................................................................................8-10
8.2.18 RESTART-INDICATION Requests Sent from BSC........................................................................ 8-11
8.2.19 REJECT Responses to RESTART-INDICATION Requests ............................................................ 8-11
8.2.20 FAILURE-INDICATION Requests Sent from BSC ........................................................................8-12
8.2.21 CBCH Loading Indications Received by BSC (Overflow)..............................................................8-12
8.2.22 CBCH Loading Indications Received by BSC (Underflow)............................................................8-12
8.2.23 WRITE-REPLACE Requests (WRITE Requests) Received by BSC..............................................8-13
8.2.24 REPORT Responses to WRITE-REPLACE Requests (WRITE Requests) .....................................8-13
8.2.25 REJECT Responses to WRITE-REPLACE Requests (WRITE Requests) ......................................8-14
8.2.26 WRITE-REPLACE Requests (REPLACE Requests) Received by BSC.........................................8-14
8.2.27 REPORT Responses to WRITE-REPLACE Requests (REPLACE Requests) ................................8-15
8.2.28 REJECT Responses to WRITE-REPLACE Requests (REPLACE Requests) .................................8-15
8.2.29 Mean Capacity of BSC Message Library.........................................................................................8-16
8.2.30 Disruptions of the BSC-CBC Connection........................................................................................8-16
9 PCU Measurement .....................................................................................................................9-1
9.1 Overview of PCU Measurement ...................................................................................................................9-2
9.2 PCU Measurement per BSC..........................................................................................................................9-2
9.2.1 Overview..............................................................................................................................................9-2
9.2.2 Total Messages Received from PCU....................................................................................................9-2
9.3 PCU Measurement per PCU .........................................................................................................................9-3
9.3.1 Overview..............................................................................................................................................9-3
9.3.2 Messages Received from a PCU ..........................................................................................................9-3
10 Paging Measurement.............................................................................................................10-1
10.1 Overview of Paging Measurement ............................................................................................................10-2
10.2 A Interface Paging Measurement ..............................................................................................................10-2
10.2.1 Overview of A Interface Paging Measurement ................................................................................10-2
10.2.2 MSC-Initiated Paging Requests for CS Service...............................................................................10-3
10.2.3 SGSN-Initiated Paging Requests for CS Service .............................................................................10-3
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10.2.4 SGSN-Initiated Paging Requests for PS Service .............................................................................10-4
10.2.5 Delivered to BTS for CS Service .....................................................................................................10-5
10.3 Abis Interface Paging Measurement..........................................................................................................10-6
10.3.1 Overview of Abis Interface Paging Measurement ...........................................................................10-6
10.3.2 Delivered Paging Messages for CS Service.....................................................................................10-6
10.3.3 Delivered Paging Messages for PS Service .....................................................................................10-7
10.4 Measurement of Discarded Paging Messages due to Overload per LAPD ...............................................10-8
10.4.1 Overview of Measurement of Discarded Paging Messages due to Overload per LAPD .................10-8
10.4.2 SM Pagings Discarded on LAPD Link ............................................................................................10-9
10.4.3 CS Pagings Discarded on LAPD Link .............................................................................................10-9
10.4.4 PS Pagings Discarded on LAPD Link .............................................................................................10-9
11 Call Measurement ..................................................................................................................11-1
11.1 Overview of Call Measurement................................................................................................................. 11-3
11.2 Call Duration Measurement per BSC........................................................................................................ 11-4
11.2.1 Overview.......................................................................................................................................... 11-4
11.2.2 Mean Duration of Call Access ......................................................................................................... 11-4
11.2.3 Mean Duration of Call Establishment .............................................................................................. 11-4
11.3 Flow Control Measurement per Cell ......................................................................................................... 11-5
11.3.1 Overview.......................................................................................................................................... 11-5
11.3.2 MSG DEL IND Messages Sent on Abis Interface ........................................................................... 11-6
11.3.3 MSG CCCH LOAD IND (RACH) Messages Sent on Abis Interface.............................................. 11-6
11.3.4 MSG CCCH LOAD IND (PCH) Messages Sent on Abis Interface................................................. 11-7
11.3.5 PACKET CCCH LOAD IND Messages Sent on Abis Interface...................................................... 11-7
11.3.6 MSG ABIS OVERLOAD (CCCH OVERLOAD) Messages Sent on Abis Interface ...................... 11-8
11.3.7 MSG ABIS OVERLOAD (PROCESSOR OVERLOAD) Messages Sent on Abis Interface .......... 11-8
11.3.8 LOAD IND Messages Sent on the A-Interface ................................................................................ 11-9
11.3.9 Increases of Flow Control Levels..................................................................................................... 11-9
11.3.10 Decreases of Flow Control Levels ............................................................................................... 11-10
11.3.11 Ignored Trigger Events................................................................................................................. 11-11
11.3.12 Highest Level Delays ................................................................................................................... 11-11
11.4 Short Message Measurement per Cell ..................................................................................................... 11-12
11.4.1 Overview........................................................................................................................................ 11-12
11.4.2 Uplink Point-to-Point Short Messages on SDCCH........................................................................ 11-12
11.4.3 Downlink Point-to-Point Short Messages on SDCCH ................................................................... 11-13
11.4.4 Uplink Point-to-Point Short Messages on TCH ............................................................................. 11-13
11.4.5 Downlink Point-to-Point Short Messages on TCH ........................................................................ 11-13
11.4.6 Total Uplink Point-to-Point Short Messages .................................................................................. 11-14
11.4.7 Total Downlink Point-to-Point Short Messages ............................................................................. 11-14
11.4.8 Point-to-Point Short Messages on SDCCH.................................................................................... 11-15
11.4.9 Point-to-Point Short Messages on TCH ......................................................................................... 11-15
11.5 Call Drop Measurement per Cell............................................................................................................. 11-15
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11.5.1 Overview........................................................................................................................................ 11-15
11.5.2 Call Drop Sampled Measurement per Cell..................................................................................... 11-16
11.5.3 Call Drop Analyzed Measurement per Cell.................................................................................... 11-21
11.6 Channel Activation Measurement per Cell.............................................................................................. 11-29
11.6.1 Overview........................................................................................................................................ 11-29
11.6.2 SDCCH Connection Measurement per Cell................................................................................... 11-30
11.6.3 TCH Connection Measurement per Cell ........................................................................................ 11-32
11.6.4 Channel Activation Analyzed Measurement per Cell..................................................................... 11-37
11.7 Channel Seizure Measurement per TRX ................................................................................................. 11-42
11.8 Immediate Assignment Measurement per Cell........................................................................................ 11-45
11.8.1 Overview........................................................................................................................................ 11-45
11.8.2 Channel Requests per Cell ............................................................................................................. 11-46
11.8.3 Immediate Assignment Commands per Cell .................................................................................. 11-47
11.8.4 Call Setup Indications per Cell....................................................................................................... 11-49
11.8.5 Rejects to Service Requests per Cell.............................................................................................. 11-51
11.8.6 Immediate Assignment Analyzed Measurement per Cell............................................................... 11-52
11.9 Assignment Measurement per Cell.......................................................................................................... 11-55
11.9.1 Overview........................................................................................................................................ 11-55
11.9.2 Assignment Requests per Cell........................................................................................................ 11-55
11.9.3 Assignment Commands per Cell .................................................................................................... 11-58
11.9.4 Completed Assignments per Cell ................................................................................................... 11-60
11.9.5 Failed Assignments per Cell........................................................................................................... 11-61
11.9.6 Mode Modify Commands per Cell................................................................................................. 11-64
11.9.7 Failed Mode Modify Attempts per Cell ......................................................................................... 11-66
11.9.8 Assignment Procedure Analyzed Measurement per Cell ............................................................... 11-68
11.10 Intra-Cell Handover Measurement per Cell .......................................................................................... 11-70
11.10.1 Overview...................................................................................................................................... 11-70
11.10.2 Intra-Cell Handover Requests per Cell ........................................................................................ 11-72
11.10.3 Intra-Cell Handover Commands per Cell..................................................................................... 11-73
11.10.4 Failed Intra-Cell Handovers per Cell ........................................................................................... 11-74
11.10.5 Intra-Cell AMR Handover per Cell .............................................................................................. 11-80
11.10.6 Intra-Cell Handover Detection Messages Received by BSC per Cell.......................................... 11-82
11.10.7 Intra-Cell Handover Measurement per Cell ................................................................................. 11-83
11.11 Incoming Internal Inter-Cell Handover Measurement per Cell ............................................................. 11-88
11.11.1 Overview ...................................................................................................................................... 11-88
11.11.2 Incoming Internal Inter-Cell Handover Requests per Cell ........................................................... 11-90
11.11.3 Incoming Internal Inter-Cell Handover Responses per Cell......................................................... 11-91
11.11.4 Failed Incoming Internal Inter-Cell Handovers per Cell .............................................................. 11-93
11.11.5 Incoming Internal Inter-Cell Handover Detection Messages Received by BSC per Cell ............ 11-97
11.11.6 Incoming Internal Inter-Cell Handover Analyzed Measurement per Cell.................................... 11-98
11.12 Outgoing Internal Inter-Cell Handover Measurement per Cell ........................................................... 11-100
11.12.1 Overview.................................................................................................................................... 11-100
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11.12.2 Outgoing Internal Inter-Cell Handover Requests per Cell ......................................................... 11-105
11.12.3 Outgoing Internal Inter-Cell Handover Commands per Cell ..................................................... 11-108
11.12.4 Failed Outgoing Internal Inter-Cell Handovers per Cell ............................................................ 11-111
11.12.5 Outgoing Internal Inter-Cell Handover Measurement per Cell .................................................. 11-121
11.13 Incoming External Inter-Cell Handover Measurement per Cell.......................................................... 11-126
11.13.1 Overview.................................................................................................................................... 11-126
11.13.2 Incoming External Inter-Cell Handover Requests per Cell........................................................ 11-128
11.13.3 Incoming External Inter-Cell Handover Responses per Cell ..................................................... 11-130
11.13.4 Failed Incoming External Inter-Cell Handovers per Cell........................................................... 11-131
11.13.5 Incoming External Inter-Cell Handover Detection Messages Received by BSC per Cell ......... 11-136
11.13.6 Incoming External Inter-Cell Handover Analyzed Measurement per Cell................................. 11-137
11.14 Outgoing External Inter-Cell Handover Measurement per Cell .......................................................... 11-140
11.14.1 Overview.................................................................................................................................... 11-140
11.14.2 Outgoing External Inter-Cell Handover Requests per Cell ........................................................ 11-144
11.14.3 Outgoing External Inter-Cell Handover Commands per Cell .................................................... 11-147
11.14.4 Failed Outgoing External Inter-Cell Handovers per Cell ........................................................... 11-151
11.14.5 Outgoing External Inter-Cell Handover Analyzed Measurement per Cell................................. 11-164
11.15 Incoming Inter-RAT Inter-Cell Handover Measurement per Cell ....................................................... 11-170
11.15.1 Overview.................................................................................................................................... 11-170
11.15.2 Incoming Inter-RAT Inter-Cell Handover Requests per Cell ..................................................... 11-172
11.15.3 Incoming Inter-RAT Inter-Cell Handover Responses per Cell................................................... 11-173
11.15.4 Failed Incoming Inter-RAT Inter-Cell Handovers per Cell ........................................................ 11-174
11.15.5 Incoming Inter-RAT Inter-Cell Handover Analyzed Measurement per Cell.............................. 11-176
11.16 Outgoing Inter-RAT Inter-Cell Handover Measurement per Cell ....................................................... 11-178
11.16.1 Overview.................................................................................................................................... 11-178
11.16.2 Outgoing Inter-RAT Inter-Cell Handover Requests per Cell ..................................................... 11-181
11.16.3 Outgoing Inter-RAT Inter-Cell Handover Commands per Cell.................................................. 11-182
11.16.4 Failed Outgoing Inter-RAT Inter-Cell Handovers per Cell ........................................................ 11-183
11.16.5 Outgoing Inter-RAT Inter-Cell Handover Analyzed Measurement per Cell .............................. 11-189
11.17 GSM Cell to GSM Cell Incoming Handover Measurement................................................................ 11-193
11.17.1 Overview.................................................................................................................................... 11-193
11.17.2 Cell Incoming Handover Requests (Cell to Cell)....................................................................... 11-194
11.17.3 Failed Cell Incoming Handovers (Cell to Cell).......................................................................... 11-194
11.17.4 Cell Incoming Handover Analyzed Measurement (Cell to Cell)................................................ 11-195
11.18 GSM Cell to GSM Cell Outgoing Handover Measurement ................................................................ 11-196
11.18.1 Overview.................................................................................................................................... 11-196
11.18.2 Cell Outgoing Handover Commands (Cell to Cell) ................................................................... 11-197
11.18.3 Failed Cell Outgoing Handovers (Cell to Cell).......................................................................... 11-198
11.18.4 Cell Outgoing Handover Analyzed Measurement (Cell to Cell)................................................ 11-200
11.19 Measurement of MRs upon Handover Initiation per Cell ................................................................... 11-201
11.19.1 Overview.................................................................................................................................... 11-201
11.19.2 Measurement of MRs upon Handover Initiation (Receiving Quality) per Cell.......................... 11-202
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11.19.3 Mean Uplink Receiving Level during Handover Initiation per Cell .......................................... 11-203
11.19.4 Mean Uplink Receiving Quality during Handover Initiation per Cell ....................................... 11-204
11.19.5 Concentric Cell Handover Initiation MR Analyzed Measurement (Receiving Level) per Cell . 11-205
11.19.6 Concentric Cell Handover Initiation MR Analyzed Measurement (Timing Advance) per Cell. 11-206
11.20 KPI Measurement per Cell .................................................................................................................. 11-207
11.20.1 Overview.................................................................................................................................... 11-207
11.20.2 Immediate Assignment Requests ............................................................................................... 11-208
11.20.3 Immediate Assignment Commands............................................................................................ 11-209
11.20.4 SDCCH Seizure Requests .......................................................................................................... 11-209
11.20.5 Failed SDCCH Seizures due to Busy SDCCH........................................................................... 11-210
11.20.6 Successful SDCCH Seizures...................................................................................................... 11-210
11.20.7 Traffic Volume on SDCCH ........................................................................................................ 11-211
11.20.8 Traffic Volume on SDCCH ........................................................................................................ 11-212
11.20.9 Available SDCCHs..................................................................................................................... 11-212
11.20.10 Configured SDCCHs................................................................................................................ 11-212
11.20.11 TCH Seizure Requests (Signaling Channel)............................................................................. 11-213
11.20.12 Failed TCH Seizures due to Busy TCH (Signaling Channel) .................................................. 11-213
11.20.13 Successful TCH Seizures (Signaling Channel) ........................................................................ 11-214
11.20.14 Call Drops on TCH (Signaling Channel) ................................................................................. 11-214
11.20.15 Traffic Volume on TCH (Signaling Channel)........................................................................... 11-215
11.20.16 TCH Seizure Requests (Traffic Channel)................................................................................. 11-215
11.20.17 Failed TCH Seizures due to Busy TCH (Traffic Channel)....................................................... 11-216
11.20.18 Successful TCH Seizures (Traffic Channel)............................................................................. 11-216
11.20.19 Call Drops on TCH in Stable State (Traffic Channel) .............................................................. 11-216
11.20.20 TCH Seizure Requests in TCH Handovers (Traffic Channel).................................................. 11-217
11.20.21 Failed TCH Seizures in TCH Handovers due to Busy TCH (Traffic Channel)........................ 11-218
11.20.22 Successful TCH Seizures in TCH Handovers (Traffic Channel) ............................................. 11-218
11.20.23 Call Drops in TCH Handovers (Traffic Channel) .................................................................... 11-219
11.20.24 Traffic Volume on TCH (Traffic Channel) ............................................................................... 11-219
11.20.25 Available TCHs ........................................................................................................................ 11-220
11.20.26 Configured TCHs ..................................................................................................................... 11-220
11.20.27 Dual-Band Handover Requests ................................................................................................ 11-220
11.20.28 Successful Dual-Band Handovers ............................................................................................ 11-221
11.21 Calls Discarded due to Overload per LAPD........................................................................................ 11-223
11.21.1 Overview.................................................................................................................................... 11-223
11.21.2 Random Access Requests Discarded on LAPD ......................................................................... 11-223
12 MR Measurement...................................................................................................................12-1
12.1 Overview of MR Measurement.................................................................................................................12-3
12.2 Number of MRs per Cell...........................................................................................................................12-3
12.2.1 Overview of Number of MRs per Cell.............................................................................................12-3
12.2.2 Sampled MRs per Cell .....................................................................................................................12-4
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12.2.3 Analyzed MRs per Cell ....................................................................................................................12-5
12.3 Interference Band Measurement per TRX.................................................................................................12-6
12.3.1 Overview of Interference Band Measurement per TRX ..................................................................12-6
12.3.2 Sampled Measurement of Interference Band per TRX ....................................................................12-7
12.3.3 Analyzed Measurement of Interference Band per TRX ...................................................................12-8
12.4 Power Control Messages per Cell ...........................................................................................................12-10
12.4.1 Overview of Power Control Messages per Cell .............................................................................12-10
12.4.2 Number of Power Control Messages per Cell................................................................................ 12-11
12.4.3 Sampled Power Rank During Power Control per Cell...................................................................12-12
12.4.4 Analyzed Power Rank During Power Control per Cell..................................................................12-12
12.4.5 Sampled Level of Power Control Signals per Cell.........................................................................12-13
12.4.6 Analyzed Level of Power Control Signals per Cell .......................................................................12-14
12.4.7 Sampling Quality of Power Control Signals per Cell ....................................................................12-14
12.4.8 Analyzed Quality of Power Control Signals per Cell.....................................................................12-15
12.4.9 Sampled Duration of Maximum Power per Cell............................................................................12-15
12.4.10 Analyzed Duration of Maximum Power per Cell.........................................................................12-16
12.4.11 Distance Between MS and BTS per Cell .....................................................................................12-17
12.4.12 Maximum Distance Between MS and BTS per Cell....................................................................12-17
12.4.13 Number of Power Control Messages per Cell..............................................................................12-18
12.4.14 Mean Distance Between MS and BTS.........................................................................................12-18
12.5 Neighbor Cell Level Measurement per Cell............................................................................................12-18
12.5.1 Overview of Neighbor Cell Level Measurement per Cell..............................................................12-18
12.5.2 Strength of Signals in Neighbor Cells............................................................................................12-19
12.5.3 Number of MRs of Neighbor Cells ................................................................................................12-19
12.5.4 Mean Strength of Signals in Neighbor Cells..................................................................................12-20
12.6 TCHF Receive Level Measurement per TRX .........................................................................................12-20
12.7 TCHH Receive Level Measurement per TRX.........................................................................................12-29
12.8 Receive Quality Measurement per TRX .................................................................................................12-36
12.9 Uplink-and-Downlink Balance Measurement per TRX ..........................................................................12-39
12.10 Number of MRs Based on TA per TRX ................................................................................................12-41
12.11 Radio Link Failure Measurement per TRX ...........................................................................................12-43
12.11.1 Overview of Radio Link Failure Measurement per TRX.............................................................12-43
12.11.2 Uplink and Downlink Level During Radio Link Failure per TRX...............................................12-44
12.11.3 Mean Uplink and Downlink Level During Radio Link Failure per TRX ....................................12-44
12.11.4 Uplink and Downlink Quality During Radio Link Failure per TRX............................................12-46
12.11.5 Mean Uplink and Downlink Quality During Radio Link Failure per TRX..................................12-47
12.11.6 TA During Radio Link Failure per TRX ......................................................................................12-48
12.11.7 Mean TA During Radio Link Failure per TRX ............................................................................12-48
12.11.8 Sampled Radio Link Failures per TRX ........................................................................................12-49
12.12 Radio Link Failure Measurement based on TA per TRX ......................................................................12-50
12.13 RQI Measurement based on TA per TRX..............................................................................................12-52
12.13.1 Overview of RQI Measurement based on TA per TRX ...............................................................12-52
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12.13.2 Sampled RQI based on TA per TRX ............................................................................................12-52
12.13.3 Analyzed RQI based on TA per TRX ...........................................................................................12-55
13 Channel Measurement ..........................................................................................................13-1
13.1 Overview of Channel Measurement..........................................................................................................13-3
13.2 Channel Configuration Measurement per Cell..........................................................................................13-3
13.2.1 Overview..........................................................................................................................................13-3
13.2.2 Sampled Measurement of Initially Configured Channels ................................................................13-4
13.2.3 Analyzed Measurement of Dynamically Configured Channels .......................................................13-7
13.2.4 Analyzed Measurement of Available Channels..............................................................................13-12
13.2.5 SDCCH Availability.......................................................................................................................13-19
13.2.6 TCH Availability ............................................................................................................................13-19
13.2.7 Analyzed Measurement of Initially Configured Channels .............................................................13-20
13.3 Channel Conversion Measurement per Cell............................................................................................13-22
13.3.1 Overview........................................................................................................................................13-22
13.3.2 Channel Conversion Requests (TCHF-TCHH)..............................................................................13-23
13.3.3 Successful Channel Conversions (TCHF-TCHH) .........................................................................13-24
13.3.4 Channel Conversion Requests (TCHH-TCHF)..............................................................................13-25
13.3.5 Successful Channel Conversions (TCHH-TCHF) .........................................................................13-25
13.3.6 Number of Channel Conversions (TCH-SDCCH).........................................................................13-26
13.3.7 Number of Channel Conversions (SDCCH-TCH).........................................................................13-27
13.4 Channel Busy Duration Measurement per Cell.......................................................................................13-27
13.4.1 Overview........................................................................................................................................13-27
13.4.2 Busy State Duration of All Channels (SDCCH/TCHF/TCHH) .....................................................13-28
13.4.3 Mean Duration of Busy State for All Channels (SDCCH/TCHF/TCHH)......................................13-29
13.5 Measurement of Maximum Busy Channels per Cell...............................................................................13-30
13.6 Channel State Measurement per Cell ......................................................................................................13-31
13.6.1 Overview........................................................................................................................................13-31
13.6.2 Mean Number of Busy Signaling Channels (SDCCH/TCHF/TCHH)...........................................13-32
13.6.3 Mean Number of Busy TCHs (TCHF/TCHH)...............................................................................13-33
13.6.4 Mean Number of Blocked Channels ..............................................................................................13-34
13.6.5 Mean Number of Idle Channels .....................................................................................................13-35
13.6.6 Mean Number of Busy TCHs (Overlaid Subcell) ..........................................................................13-36
13.6.7 Mean Number of Busy TCHs (Underlaid Subcell) ........................................................................13-36
13.6.8 Mean Number of Busy Signaling Channels (SDCCH/TCHF/TCHH)...........................................13-37
13.6.9 Mean Number of Busy TCHs (TCHF/TCHH)...............................................................................13-38
13.7 Channel Assignment Request Measurement per Cell..............................................................................13-38
13.7.1 Overview........................................................................................................................................13-38
13.7.2 Channel Assignment Requests in Immediate Assignment Procedure (SDCCH/TCHF/TCHH/TCH)1339
13.7.3 Channel Assignment Requests in Assignment Procedure (TCHF/TCHH/TCH) ...........................13-41
13.7.4 Channel Assignment Requests in Internal Intra-Cell Handover Procedure
(SDCCH/TCHF/TCHH/TCH) ..................................................................................................................13-42
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13.7.5 Channel Assignment Requests in Incoming Internal Inter-Cell Handover Procedure
(SDCCH/TCHF/TCHH/TCH) ..................................................................................................................13-43
13.7.6 Channel Assignment Requests in Incoming External Inter-Cell Handover Procedure
(SDCCH/TCHF/TCHH/TCH) ..................................................................................................................13-45
13.7.7 Channel Assignment Requests (SDCCH) ......................................................................................13-46
13.7.8 Channel Assignment Requests (TCHF) .........................................................................................13-47
13.7.9 Channel Assignment Requests (TCHH).........................................................................................13-47
13.7.10 Channel Assignment Requests (TCH) .........................................................................................13-48
13.8 Channel Assignment Success Measurement per TRX.............................................................................13-49
13.8.1 Overview........................................................................................................................................13-49
13.8.2 Successful Channel Assignments in Immediate Assignment Procedure (SDCCH/ TCHF/TCHH)13-50
13.8.3 Successful Channel Assignments in Assignment Procedure (TCHF/TCHH) ................................13-51
13.8.4 Successful Channel Assignments in Internal Intra-Cell Handover Procedure (SDCCH/TCHF/TCHH)
..................................................................................................................................................................13-52
13.8.5 Successful Channel Assignments in Incoming Internal Inter-Cell Handover Procedure
(SDCCH/TCHF/TCHH) ...........................................................................................................................13-53
13.8.6 Successful Channel Assignments in Incoming External Inter-Cell Handover Procedure (SDCCH/
TCHF/TCHH)...........................................................................................................................................13-54
13.8.7 Successful Channel Assignments (SDCCH) ..................................................................................13-55
13.8.8 Successful Channel Assignments (TCHF) .....................................................................................13-55
13.8.9 Successful Channel Assignments (TCHH) ....................................................................................13-56
13.8.10 Successful Channel Assignments (TCH) .....................................................................................13-57
13.9 Channel Assignment Failure Measurement per Cell ...............................................................................13-57
13.9.1 Overview........................................................................................................................................13-57
13.9.2 Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Immediate
Assignment Procedure (SDCCH) .............................................................................................................13-59
13.9.3 Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Immediate
Assignment Procedure (TCHF) ................................................................................................................13-59
13.9.4 Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Immediate
Assignment Procedure (TCHH)................................................................................................................13-60
13.9.5 Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Assignment
Procedure (TCHF/TCHH) ........................................................................................................................13-61
13.9.6 Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Internal Intra-Cell
Handover Procedure (SDCCH).................................................................................................................13-61
13.9.7 Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Internal Intra-Cell
Handover Procedure (TCHF/TCHH)........................................................................................................13-62
13.9.8 Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Incoming Internal
Inter-Cell Handover Procedure (SDCCH) ................................................................................................13-63
13.9.9 Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Incoming Internal
Inter-Cell Handover Procedure (TCHF/ TCHH).......................................................................................13-64
13.9.10 Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Incoming External
Inter-Cell Handover Procedure (SDCCH) ................................................................................................13-65
13.9.11 Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Incoming External
Inter-Cell Handover Procedure (TCHF/ TCHH).......................................................................................13-65
13.9.12 Channel Assignment Failures (All Channels Busy or Channels Unconfigured) (SDCCH) .........13-66
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13.9.13 Channel Assignment Failures (All Channels Busy or Channels Unconfigured) (TCHF) ............13-67
13.9.14 Channel Assignment Failures (All Channels Busy or Channels Unconfigured) (TCHH) ...........13-68
13.9.15 Channel Assignment Failures (All Channels Busy or Channels Unconfigured) (TCH) ..............13-69
13.10 Channel Assignment Concentric Cell Measurement per Cell ...............................................................13-69
13.10.1 Overview......................................................................................................................................13-69
13.10.2 Channel Assignment Requests of Concentric Cell.......................................................................13-70
13.10.3 TCH Assignment Requests of Concentric Cell ............................................................................13-71
13.10.4 Assignment Requests of Concentric Cell in Incoming Internal Inter-Cell Handover Procedure (TCH)
..................................................................................................................................................................13-72
13.10.5 Channel Assignment Requests in Incoming External Inter-Cell Handover Procedure (TCH).....13-73
13.10.6 Channel Assignment Overflows (TCH) (Underlaid Subcell Preferred or Overlaid Subcell Preferred)
..................................................................................................................................................................13-74
13.10.7 Channel Assignment Overflows in Concentric Cell in Incoming Internal Inter-Cell Handover
Procedure (TCH).......................................................................................................................................13-74
13.10.8 Channel Assignment Overflows in Concentric Cell in Incoming External Inter-Cell Handover
Procedure (TCH).......................................................................................................................................13-75
13.10.9 Channel Assignment Overflows in Concentric Cell (TCH) .........................................................13-76
13.10.10 Channel Assignment Overflows in Concentric Cell (SDCCH)..................................................13-77
13.10.11 Channel Assignment Overflows in Concentric Cell (TCHF) .....................................................13-77
13.10.12 Channel Assignment Overflows in Concentric Cell (TCHH) ....................................................13-78
13.10.13 Failed Handovers from Underlaid Subcell to Overlaid Subcell due to Busy Channels in Overlaid
Subcell ......................................................................................................................................................13-79
13.10.14 Failed Handovers from Overlaid Subcell to Underlaid Subcell due to Busy Channels in Underlaid
Subcell ......................................................................................................................................................13-79
13.11 Channel Assignment Queue Measurement per Cell ..............................................................................13-80
13.11.1 Overview......................................................................................................................................13-80
13.11.2 Maximum Queue Length .............................................................................................................13-80
13.11.3 Total Queue Length......................................................................................................................13-81
13.11.4 Sampled Queuings .......................................................................................................................13-81
13.11.5 Total Queuing Duration................................................................................................................13-81
13.11.6 Channel Assignment Queue Measurement...................................................................................13-82
13.11.7 Mean Queue Length.....................................................................................................................13-83
13.11.8 Mean Queuing Duration...............................................................................................................13-84
13.11.9 Failed Queuings ...........................................................................................................................13-84
13.12 Channel Assignment GPRS Measurement per Cell ..............................................................................13-84
13.12.1 Overview......................................................................................................................................13-84
13.12.2 Requests for TCH from the PCU .................................................................................................13-85
13.12.3 Successful TCH Requests from the PCU .....................................................................................13-85
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Figures
Figures
Figure 1-1 SCCP Measurement..........................................................................................................................1-3
Figure 2-1 MTP3 Measurement .........................................................................................................................2-3
Figure 3-1 LAPD link measurement ..................................................................................................................3-3
Figure 10-1 MSC-initiated paging procedure for CS service ...........................................................................10-3
Figure 10-2 SGSN-initiated paging procedure for CS service .........................................................................10-4
Figure 10-3 SGSN-initiated paging procedure for PS service..........................................................................10-5
Figure 10-4 BSC-delivered CS paging procedure ............................................................................................10-6
Figure 10-5 CS paging procedure.....................................................................................................................10-7
Figure 10-6 PS paging procedure .....................................................................................................................10-8
Figure 11-1 Immediate assignment procedure................................................................................................ 11-46
Figure 11-2 trigger points of the counters of Immediate Assignment Commands per Cell............................ 11-48
Figure 11-3 Trigger points of the counters of Call Setup Indications............................................................. 11-50
Figure 11-4 Trigger points of the counters of Rejects to Service Requests per Cell ...................................... 11-52
Figure 11-5 Trigger point of the counters of Assignment Requests per Cell.................................................. 11-58
Figure 11-6 Trigger Point of the counters of Assignment Commands per Cell.............................................. 11-59
Figure 11-7 Trigger points of the counters of Completed Assignments per Cell............................................ 11-61
Figure 11-8 Trigger points of the counters of Mode Modify Commands per Cell ......................................... 11-65
Figure 11-9 Trigger points of the counters of Failed Mode Modify Attempts per Cell .................................. 11-67
Figure 11-10 Intra-cell handover procedure ................................................................................................... 11-71
Figure 11-11 Trigger points of the counters of Failed Intra-Cell Handovers per Cell .................................... 11-78
Figure 11-12 Incoming internal inter-cell handover ....................................................................................... 11-89
Figure 11-13 Trigger points of the counters of Failed Incoming Internal Inter-Cell Handovers per Cell ...... 11-96
Figure 11-14 Outgoing internal inter-cell handover (excluding directed retry)............................................ 11-102
Figure 11-15 Outgoing internal inter-cell handover (directed retry) ............................................................ 11-104
Figure 11-16 Trigger points of the counters of Failed Outgoing Internal Inter-Cell Handovers per Cell
(Excluding Directed Retry) ........................................................................................................................... 11-117
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Figure 11-17 Trigger points of the counters of Failed Outgoing Internal Inter-Cell Handovers per Cell (Directed
Retry) ............................................................................................................................................................ 11-118
Figure 11-18 Incoming external inter-cell handover .................................................................................... 11-127
Figure 11-19 Trigger points of the counters of Failed Incoming External Inter-Cell Handovers per Cell BSC. 11134
Figure 11-20 Outgoing external inter-cell handover (excluding directed retry) ........................................... 11-141
Figure 11-21 Outgoing external inter-cell handover (Directed Retry) ......................................................... 11-143
Figure 11-22 Trigger points of Failed Outgoing External Inter-Cell Handovers (Excluding Directed Retry) ... 11159
Figure 11-23 Failed Outgoing External Inter-Cell Handovers (Directed Retry) .......................................... 11-160
Figure 11-24 Incoming inter-RAT inter-cell handover procedure ................................................................ 11-171
Figure 11-25 Incoming inter-RAT inter-cell handover procedure ................................................................ 11-175
Figure 11-26 Outgoing inter-RAT inter-cell handover procedure (excluding directed retry) ....................... 11-179
Figure 11-27 Outgoing inter-RAT inter-cell handover procedure (including directed retry)........................ 11-180
Figure 11-28 Outgoing inter-RAT inter-cell handover procedure (excluding directed retry) ....................... 11-186
Figure 11-29 Outgoing inter-RAT inter-cell handover procedure (including directed retry)........................ 11-187
Figure 13-1 Channel assignment in the immediate assignment procedure.....................................................13-40
Figure 13-2 Channel assignment in the assignment procedure ......................................................................13-42
Figure 13-3 Channel assignment in the internal intra-cell handover procedure .............................................13-43
Figure 13-4 Channel assignment in the incoming internal inter-cell handover procedure .............................13-44
Figure 13-5 Channel assignment in the incoming external inter-cell handover procedure.............................13-46
Figure 13-6 Channel assignment in the immediate assignment procedure.....................................................13-51
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Tables
Tables
Table 1-1 Measurement unit of SCCP Measurement..........................................................................................1-2
Table 1-2 Counters of SCCP OSP Measurement ................................................................................................1-2
Table 2-1 MTP3 Measurement Units..................................................................................................................2-2
Table 2-2 Counters of MTP3 Link Measurement ...............................................................................................2-2
Table 3-1 Measurement unit of LAPD Measurement.........................................................................................3-2
Table 3-2 Counters of LAPD Link Measurement...............................................................................................3-2
Table 4-1 Measurement unit of System Load Measurement ..............................................................................4-2
Table 4-2 Counters of CPU Usage Measurement ...............................................................................................4-2
Table 5-1 Measurement units of BTSM Measurement.......................................................................................5-2
Table 5-2 Counters of BTS State Measurement per BTS ...................................................................................5-2
Table 5-3 Counters of BTS Configuration Measurement per BM Subrack ........................................................5-5
Table 5-4 Counters of Cell State Measurement per Cell.....................................................................................5-7
Table 5-5 Counters of Cell Configuration Measurement per BM Subrack....................................................... 5-11
Table 5-6 Counters of TRX State Measurement per TRX ................................................................................5-12
Table 5-7 Counters of TRX Configuration Measurement per BM Subrack .....................................................5-13
Table 5-8 Counters of CRC Error Measurement per BTS ................................................................................5-14
Table 5-9 Counters of Duration of CRC Error on Ports 0 Through 23 .............................................................5-15
Table 5-10 Counter of CRC Serious Error Measurement per BTS...................................................................5-16
Table 5-11 Counters of Duration of Serious CRC Error on Ports 0 Through 23 ..............................................5-16
Table 5-12 Counters of OML Measurement per BTS.......................................................................................5-18
Table 5-13 Counters of RSL Measurement per TRX........................................................................................5-28
Table 6-1 Measurement Units of Resources Measurement.................................................................................6-2
Table 6-2 Counters of A Interface Circuit Measurement per DPC .....................................................................6-2
Table 6-3 Counters of TC Measurement per DPC..............................................................................................6-6
Table 6-4 Counters of Pb Interface Circuit Measurement per PCU....................................................................6-8
Table 6-5 Counters of Ater Interface Circuit Measurement per BM Subrack................................................... 6-11
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Table 7-1 Measurement Unit of MSC Measurement ..........................................................................................7-2
Table 7-2 Counters of MSC Measurement per DPC...........................................................................................7-2
Table 8-1 Measurement unit of CBC measurement............................................................................................8-2
Table 8-2 Counters of CBC Measurement..........................................................................................................8-2
Table 9-1 Measurement units of PCU Measurement ..........................................................................................9-2
Table 9-2 Counters of PCU Measurement per BSC ...........................................................................................9-2
Table 9-3 Counter of PCU Measurement per PCU.............................................................................................9-3
Table 10-1 Measurement units of Paging Measurement...................................................................................10-2
Table 10-2 Counters of Measurement of the Paging on the A Interface per BSC.............................................10-2
Table 10-3 Counters of Measurement of the Paging on the Abis Interface per Cell.........................................10-6
Table 10-4 Counters of Measurement of Discarded Paging Messages due to Overload per LAPD .................10-8
Table 11-1 Measurement units of call measurement......................................................................................... 11-3
Table 11-2 Counters of Call Duration Measurement per BSC.......................................................................... 11-4
Table 11-3 Counters of Flow Control Measurement per Cell ........................................................................... 11-5
Table 11-4 Counters of Short Message Measurement per Cell....................................................................... 11-12
Table 11-5 Counter classification of Call Drop Measurement per Cell .......................................................... 11-16
Table 11-6 Counters of Call Drop Sampled Measurement per Cell................................................................ 11-16
Table 11-7 Counters of Call Drop Analyzed Measurement per Cell............................................................... 11-21
Table 11-8 Counter classification of Channel Activation Measurement per Cell ........................................... 11-29
Table 11-9 Counters of SDCCH Connection Measurement per Cell.............................................................. 11-30
Table 11-10 TCH Connection Measurement per Cell..................................................................................... 11-32
Table 11-11 Counters of Channel Activation Analyzed Measurement per Cell.............................................. 11-37
Table 11-12 Counters of Channel Seizure Measurement per TRX ................................................................. 11-42
Table 11-13 Counter classification of Immediate Assignment Measurement per Cell ................................... 11-46
Table 11-14 Counters of Channel Requests per Cell ...................................................................................... 11-46
Table 11-15 Counters of Immediate Assignment Commands per Cell ........................................................... 11-47
Table 11-16 Counters of Call Setup Indications ............................................................................................. 11-49
Table 11-17 Counter of Rejects to Service Requests per Cell ........................................................................ 11-51
Table 11-18 Counters of Immediate Assignment Analyzed Measurement per Cell........................................ 11-52
Table 11-19 Counter classification of Assignment Measurement per Cell ..................................................... 11-55
Table 11-20 Counters of Assignment Requests per Cell................................................................................. 11-55
Table 11-21 Counters of Assignment Commands per Cell ............................................................................. 11-58
Table 11-22 Counters of Completed Assignments per Cell ............................................................................ 11-60
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Table 11-23 Counters of Failed Assignments per Cell.................................................................................... 11-61
Table 11-24 Counters of Mode Modify Commands per Cell.......................................................................... 11-64
Table 11-25 Counters of Failed Mode Modify Attempts per Cell .................................................................. 11-66
Table 11-26 Counters of Assignment Procedure Analyzed Measurement per Cell ........................................ 11-68
Table 11-27 Counter classification of Intra-Cell Handover Requests per Cell ............................................... 11-71
Table 11-28 Counters of Internal Intra-Cell Handover Requests per Cell ...................................................... 11-72
Table 11-29 Counters of Intra-Cell Handover Commands per Cell................................................................ 11-73
Table 11-30 Counters of Failed Intra-Cell Handovers per Cell ...................................................................... 11-74
Table 11-31 Counters of Intra-Cell AMR Handover per Cell ......................................................................... 11-80
Table 11-32 Counters of Intra-Cell Handover Detection Messages Received by BSC per Cell..................... 11-82
Table 11-33 Counters of Intra-Cell Handover Measurement per Cell ............................................................ 11-83
Table 11-34 Counter classification of Incoming Internal Inter-Cell Handover Measurement per Cell .......... 11-89
Table 11-35 Counters of Incoming Internal Inter-Cell Handover Requests per Cell ...................................... 11-90
Table 11-36 Counters of Incoming Internal Inter-Cell Handover Responses per Cell.................................... 11-91
Table 11-37 Counters of Failed Incoming Internal Inter-Cell Handovers per Cell......................................... 11-93
Table 11-38 Counters of Incoming Internal Inter-Cell Handover Detection Messages Received by BSC per Cell
......................................................................................................................................................................... 11-97
Table 11-39 Counters of Incoming Internal Inter-Cell Handover Analyzed Measurement per Cell............... 11-98
Table 11-40 Counter classification of Outgoing Internal Inter-Cell Handover Measurement per Cell......... 11-104
Table 11-41 Counters of Outgoing Internal Inter-Cell Handover Requests per Cell (Excluding Directed Retry)
....................................................................................................................................................................... 11-105
Table 11-42 Counters of Outgoing Internal Inter-Cell Handover Requests per Cell (Directed Retry) ......... 11-106
Table 11-43 Counters of Outgoing Internal Inter-Cell Handover Commands per Cell (Excluding Directed Retry)
....................................................................................................................................................................... 11-108
Table 11-44 Counters of Outgoing Internal Inter-Cell Handover Commands per Cell (Directed Retry) ..... 11-109
Table 11-45 Counters of Failed Outgoing Internal Inter-Cell Handovers per Cell (Excluding Directed Retry). 11111
Table 11-46 Counters of Failed Outgoing Internal Inter-Cell Handovers per Cell (Directed Retry) ............ 11-113
Table 11-47 Counters of Failed Outgoing Internal Inter-Cell Handovers per Cell (Including Directed Retry).. 11113
Table 11-48 Counters of Outgoing Internal Inter-Cell Handover Measurement per Cell ............................. 11-121
Table 11-49 Counter classification of Incoming External Inter-Cell Handover Measurement per Cell ....... 11-127
Table 11-50 Counters of Incoming External Inter-Cell Handover Requests per Cell ................................... 11-128
Table 11-51 Counters of Incoming External Inter-Cell Handover Responses per Cell................................. 11-130
Table 11-52 Counters of Failed Incoming External Inter-Cell Handovers per Cell...................................... 11-131
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Table 11-53 Counters of Incoming External Inter-Cell Handover Detection Messages Received by BSC per Cell
....................................................................................................................................................................... 11-136
Table 11-54 Counters of Incoming External Inter-Cell Handover Analyzed Measurement per Cell............ 11-137
Table 11-55 Counter classification of outgoing External Inter-Cell Handover Measurement per Cell ........ 11-144
Table 11-56 Counters of Outgoing External Inter-Cell Handover Requests per Cell (Excluding Directed Retry)
....................................................................................................................................................................... 11-144
Table 11-57 Counters of Outgoing External Inter-Cell Handover Requests per Cell (Directed Retry) ........ 11-145
Table 11-58 Counters of Outgoing External Inter-Cell Handover Requests per Cell (Including Directed Retry)
....................................................................................................................................................................... 11-146
Table 11-59 Counters of Outgoing External Inter-Cell Handover Commands per Cell (Excluding Directed Retry)
....................................................................................................................................................................... 11-147
Table 11-60 Counters of Outgoing External Inter-Cell Handover Commands per Cell (Directed Retry) .... 11-148
Table 11-61 Counters of Outgoing External Inter-Cell Handover Commands per Cell (Including Directed Retry)
....................................................................................................................................................................... 11-149
Table 11-62 Counters of Failed Outgoing External Inter-Cell Handovers per Cell (Excluding Directed Retry) 11151
Table 11-63 Counters of Failed Outgoing External Inter-Cell Handovers per Cell (Directed Retry) ........... 11-153
Table 11-64 Counters of Failed Outgoing External Inter-Cell Handovers per Cell (Including Directed Retry). 11154
Table 11-65 Counters of Outgoing External Inter-Cell Handover Analyzed Measurement per Cell............ 11-164
Table 11-66 Counter types of Incoming Inter-RAT Inter-Cell Handover Measurement per Cell ................. 11-171
Table 11-67 Counters of Incoming Inter-RAT Inter-Cell Handover Requests per Cell ................................ 11-172
Table 11-68 Counters of Incoming Inter-RAT Inter-Cell Handover Responses per Cell.............................. 11-173
Table 11-69 Counters of Failed Incoming Inter-RAT Inter-Cell Handovers per Cell ................................... 11-174
Table 11-70 Counters of Incoming Inter-RAT Inter-Cell Handover Analyzed Measurement per Cell ......... 11-176
Table 11-71 Counter types of Outgoing Inter-RAT Inter-Cell Handover Measurement per Cell ................. 11-180
Table 11-72 Counters of Outgoing Inter-RAT Inter-Cell Handover Requests per Cell ................................ 11-181
Table 11-73 Counters of Outgoing Inter-RAT Inter-Cell Handover Commands per Cell............................. 11-182
Table 11-74 Counters of Failed Outgoing Inter-RAT Inter-Cell Handovers per Cell ................................... 11-183
Table 11-75 Counters of Outgoing Inter-RAT Inter-Cell Handover Analyzed Measurement per Cell ......... 11-189
Table 11-76 Counter types of CGSM Cell to GSM Cell Incoming Handover Measurement ....................... 11-194
Table 11-77 Counter of Failed Cell Incoming Handovers (Cell to Cell) ...................................................... 11-194
Table 11-78 Counters of Cell Incoming Handover Analyzed Measurement (Cell to Cell)........................... 11-195
Table 11-79 Counter types of GSM Cell to GSM Cell Outgoing Handover................................................. 11-197
Table 11-80 Counters of Cell Outgoing Handover Commands (Cell to Cell) .............................................. 11-197
Table 11-81 Counters of Failed Cell Outgoing Handovers (Cell to Cell) ..................................................... 11-198
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Table 11-82 Counters of Cell Outgoing Handover Analyzed Measurement................................................. 11-200
Table 11-83 Counter types of Measurement of MRs upon Handover Initiation per Cell ............................. 11-201
Table 11-84 Counters of Measurement of MRs upon Handover Initiation (Receiving Quality) per Cell..... 11-202
Table 11-85 Counters of Concentric Cell Handover Initiation MR Analyzed Measurement (Receiving Level) per
Cell................................................................................................................................................................ 11-205
Table 11-86 Counters of Concentric Cell Handover Initiation MR Analyzed Measurement (Timing Advance)
per Cell.......................................................................................................................................................... 11-206
Table 11-87 Counters of KPI Measurement per Cell.................................................................................... 11-207
Table 11-88 Counter of Calls Discarded due to Overload per LAPD........................................................... 11-223
Table 12-1 Measurement units of MR Measurement........................................................................................12-3
Table 12-2 Counters of Number of MRs per Cell.............................................................................................12-4
Table 12-3 Counters of Sampled MRs per Cell ................................................................................................12-4
Table 12-4 Counters of Analyzed MRs per Cell ...............................................................................................12-5
Table 12-5 Power level range of the interference band.....................................................................................12-7
Table 12-6 Counters of Interference Band Measurement per TRX ..................................................................12-7
Table 12-7 Counters of Sampled Measurement of Interference Band ..............................................................12-7
Table 12-8 Counters of Analyzed Measurement of Interference Band per TRX ..............................................12-8
Table 12-9 Counters of Power Control Messages per Cell .............................................................................12-10
Table 12-10 Counters of Number of Power Control Messages per Cell......................................................... 12-11
Table 12-11 Counters of Sampled Power Rank During Power Control per Cell ............................................12-12
Table 12-12 Counters of Analyzed Power Rank During Power Control per Cell...........................................12-12
Table 12-13 Counters of Sampled Level of Power Control Signals per Cell..................................................12-13
Table 12-14 Counters of Analyzed Level of Power Control Signals per Cell ................................................12-14
Table 12-15 Counters of Quality of Power Control Signals per Cell..............................................................12-14
Table 12-16 Counters of Analyzed Quality of Power Control Signals per Cell..............................................12-15
Table 12-17 Counters of Sampled Duration of Maximum Power per Cell.....................................................12-15
Table 12-18 Counters of Analyzed Duration of Maximum Power per Cell....................................................12-16
Table 12-19 Counters of Neighbor Cell Level Measurement per Cell ...........................................................12-19
Table 12-20 Rank of the receive level ............................................................................................................12-20
Table 12-21 Rank of the receive quality based on the bit error rate ...............................................................12-21
Table 12-22 Counters of TCHF Receive Level Measurement per TRX .........................................................12-21
Table 12-23 Counters of TCHH Receive Level Measurement per TRX ........................................................12-29
Table 12-24 Counters of Receive Quality Measurement per TRX .................................................................12-36
Table 12-25 Mapping between the uplink/downlink balance rank and the receive level ...............................12-40
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Table 12-26 Counters of Uplink-and-Downlink Balance Measurement per TRX..........................................12-40
Table 12-27 Counters of Number of MRs based on TA per TRX...................................................................12-41
Table 12-28 Counters of Radio Link Failure Measurement per TRX.............................................................12-43
Table 12-29 Counters of Uplink and Downlink Level During Radio Link Failure per TRX .........................12-44
Table 12-30 Counters of Mean Uplink and Downlink Level During Radio Link Failure per TRX ...............12-44
Table 12-31 Counters of Uplink and Downlink Quality During Radio Link Failure per TRX ......................12-46
Table 12-32 Counters of Mean Quality of Uplink and Downlink During Radio Link Failure per TRX ........12-47
Table 12-33 Counters of TA During Radio Link Failure per TRX .................................................................12-48
Table 12-34 Counters of Mean TA During Radio Link Failure per TRX .......................................................12-48
Table 12-35 Counters of Sampled Radio Link Failures per TRX...................................................................12-49
Table 12-36 Counters of Radio Link Failure Measurement based on TA per TRX ........................................12-50
Table 12-37 Counters of RQI Measurement based on TA per TRX ...............................................................12-52
Table 12-38 Counters of Sampled RQI based on TA per TRX .......................................................................12-52
Table 12-39 Counters of Analyzed RQI based on TA per TRX ......................................................................12-55
Table 13-1 Measurement units of Channel Measurement.................................................................................13-3
Table 13-2 Classification of the counters in the Channel Configuration Measurement per Cell measurement unit
...........................................................................................................................................................................13-4
Table 13-3 Counters in the Sampled Measurement of Initially Configured Channels measurement unit ........13-4
Table 13-4 Counters in the Analyzed Measurement of Dynamically Configured Channels measurement unit13-7
Table 13-5 Counters in the Analyzed Measurement of Available Channels measurement unit......................13-12
Table 13-6 Counters in the Analyzed Measurement of Initially Configured Channels measurement unit .....13-20
Table 13-7 Counters in the Channel Conversion Measurement per Cell measurement unit...........................13-23
Table 13-8 Classification of the counters in the Channel Busy Duration Measurement per Cell measurement
unit ..................................................................................................................................................................13-27
Table 13-9 Counters in the Busy State Duration of All Channels (SDCCH/TCHF/TCHH) measurement unit .1328
Table 13-10 Counters in the Mean Duration of Busy State for All Channels (SDCCH/TCHF/TCHH)
measurement unit ............................................................................................................................................13-29
Table 13-11 Counters in the Measurement of Maximum Busy Channels per Cell measurement unit............13-30
Table 13-12 Classification of the counters in the Channel State Measurement per Cell measurement unit ...13-31
Table 13-13 Counters in the Mean Number of Busy Signaling Channels (SDCCH/TCHF/TCHH) measurement
unit ..................................................................................................................................................................13-32
Table 13-14 Counters in the Mean Number of Busy TCHs (TCHF/TCHH) measurement unit.....................13-33
Table 13-15 Counters in the Mean Number of Blocked Channels measurement unit ....................................13-34
Table 13-16 Counters in the Mean Number of Idle Channels measurement unit ...........................................13-35
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Tables
Table 13-17 Counters in the Mean Number of Busy Signaling Channels (SDCCH/TCHF/TCHH) measurement
unit ..................................................................................................................................................................13-37
Table 13-18 Counters in the Mean Number of Busy TCHs (TCHF/TCHH) measurement unit.....................13-38
Table 13-19 Classification of the counters in the Channel Assignment Request Measurement per Cell
measurement unit ............................................................................................................................................13-39
Table 13-20 Counters in the Channel Assignment Requests in Immediate Assignment Procedure
(SDCCH/TCHF/TCHH/TCH) measurement unit ...........................................................................................13-39
Table 13-21 Counters in the Channel Assignment Requests in Assignment Procedure (TCHF/TCHH/TCH)
measurement unit ............................................................................................................................................13-41
Table 13-22 Counters in the Channel Assignment Requests in Internal Intra-Cell Handover Procedure
(SDCCH/TCHF/TCHH/TCH) measurement unit ...........................................................................................13-42
Table 13-23 Counters in the Channel Assignment Requests in Incoming Internal Inter-Cell Handover Procedure
(SDCCH/TCHF/TCHH/TCH) measurement unit ...........................................................................................13-43
Table 13-24 Counters in the Channel Assignment Requests in Incoming External Inter-Cell Handover
Procedure measurement unit ...........................................................................................................................13-45
Table 13-25 Classification of the counters in the Channel Assignment Success Measurement per TRX
measurement unit ............................................................................................................................................13-49
Table 13-26 Counters in the Channel Assignment Success Measurement per TRX measurement unit .........13-50
Table 13-27 Counters in the Successful Channel Assignments in Assignment Procedure (TCHF/TCHH)
measurement unit ............................................................................................................................................13-51
Table 13-28 Counters in the Successful Channel Assignments in Internal Intra-Cell Handover Procedure
(SDCCH/TCHF/TCHH) .................................................................................................................................13-52
Table 13-29 Counters in the Successful Channel Assignments in Incoming Internal Inter-Cell Handover
Procedure (SDCCH/TCHF/TCHH) measurement unit ...................................................................................13-53
Table 13-30 Counters in the Successful Channel Assignments in Incoming External Inter-Cell Handover
Procedure (SDCCH/ TCHF/TCHH) measurement unit ..................................................................................13-54
Table 13-31 Classification of the counters in the Channel Assignment Failure Measurement per Cell
measurement unit ............................................................................................................................................13-58
Table 13-32 Counters in the Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in
Assignment Procedure (TCHF/TCHH) measurement unit .............................................................................13-61
Table 13-33 Counters in the Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in
Internal Intra-Cell Handover Procedure (TCHF/TCHH) measurement unit ...................................................13-62
Table 13-34 Counters in the Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in
Incoming Internal Inter-Cell Handover Procedure (TCHF/ TCHH) measurement unit ..................................13-64
Table 13-35 Counters in the Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in
Incoming External Inter-Cell Handover Procedure (TCHF/ TCHH) measurement unit.................................13-65
Table 13-36 Counter classification of Channel Assignment Concentric Cell Measurement per Cell.............13-70
Table 13-37 Channel Assignment Requests of Concentric Cell .....................................................................13-70
Table 13-38 Counters of TCH Assignment Requests of Concentric Cell .......................................................13-71
Table 13-39 Counters of Channel Assignment Requests of Concentric Cell in Incoming Internal Inter-Cell
Handover Procedure (TCH ) ...........................................................................................................................13-72
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Table 13-40 Counters of Channel Assignment Requests in Incoming External Inter-Cell Handover Procedure
(TCH) ..............................................................................................................................................................13-73
Table 13-41 Counters of Channel Assignment Overflows (TCH) (Underlaid Subcell Preferred or Overlaid
Subcell Preferred)............................................................................................................................................13-74
Table 13-42 Counters of Channel Assignment Overflows in Concentric Cell in Incoming Internal Inter-Cell
Handover Procedure (TCH) ............................................................................................................................13-74
Table 13-43 Counters of Channel Assignment Overflows in Concentric Cell in Incoming External Inter-Cell
Handover Procedure (TCH) ............................................................................................................................13-75
Table 13-44 Counters of Channel Assignment Overflows in Concentric Cell (TCH) ....................................13-76
Table 13-45 Counters of Channel Assignment Overflows in Concentric Cell (SDCCH)...............................13-77
Table 13-46 Counters of Channel Assignment Overflows in Concentric Cell (TCHF)..................................13-77
Table 13-47 Counters of Channel Assignment Overflows in Concentric Cell (TCHH) .................................13-78
Table 13-48 Measurement units of Channel Assignment Queue Measurement per Cell................................13-80
Table 13-49 Counters of Channel Assignment Queue Measurement .............................................................13-82
Table 13-50 Counters of Channel Assignment GPRS Measurement per Cell ................................................13-85
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1 SCCP Measurement
1
SCCP Measurement
About This Chapter
The following table lists the sections of this chapter.
Section
Describes
1.1 Overview of SCCP
Measurement
Introduces the functions and measurement unit of the
SCCP Measurement.
1.2 SCCP OSP Measurement
Describes the functions and counters of SCCP OSP
Measurement.
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1.1 Overview of SCCP Measurement
SCCP Measurement refers to the measurement of SCCP original signaling points (OSPs).
Table 1-1 lists the measurement unit of SCCP Measurement.
Table 1-1 Measurement unit of SCCP Measurement
Measurement Unit
Section
SCCP OSP Measurement
1.2
1.2 SCCP OSP Measurement
1.2.1 Overview of SCCP OSP Measurement
SCCP OSP Measurement refers to the measurement of the number of various messages the
SCCP sends or receives.
Table 1-2 lists the counters of SCCP OSP Measurement.
Table 1-2 Counters of SCCP OSP Measurement
1-2
Counter
Section
L7001: Number of Sent UDT Messages
1.2.2
L7002: Number of Received UDT Messages
1.2.3
L7003: Number of Sent XUDT Messages
1.2.4
L7004: Number of Received XUDT Messages
1.2.5
L7005: Number of Sent CR Messages
1.2.6
L7006: Number of Received CR Messages
1.2.7
L7007: Number of Sent CREFR Messages
1.2.8
L7008: Number of Received CREFR Messages
1.2.9
RL7009: Ratio of CREF by Peer SCCP
1.2.10
RL7010: Ratio of CREF by Local SCCP
1.2.11
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1.2.2 Number of Sent UDT Messages
Counter
L7001: Number of Sent UDT Messages.
Meaning
This counter measures the number of Unitdata (UDT) meassages sent by the SCCP.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 1-1.
Figure 1-1 SCCP Measurement
A interface
BSC
MSC
This counter is measured when the SCCP sends a UDT message.
Formula
None.
1.2.3 Number of Received UDT Messages
Counter
L7002: Number of Received UDT Messages.
Meaning
This counter measures the number of UDT meassage received by the SCCP.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 1-1.
This counter is measured when the SCCP receives a UDT message.
Formula
None.
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1.2.4 Number of Sent XUDT Messages
Counter
L7003: Number of Sent XUDT Messages.
Meaning
This counter measures the number of Extended Unit Data (XUDT) messages sent by the
SCCP.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 1-1.
This counter is measured when the SCCP sends an XUDT message.
Formula
None.
1.2.5 Number of Received XUDT Messages
Counter
L7004: Number of Received XUDT Messages.
Meaning
This counter measures the number of XUDT messages received by the SCCP.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 1-1.
This counter is measured when the SCCP receives an XUDT message.
Formula
None.
1.2.6 Number of Sent CR Messages
Counter
L7005: Number of Sent CR Messages.
Meaning
This counter measures the number of Connection Request (CR) messages sent by the SCCP.
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Trigger Point
The trigger point is on the BSC side, as shown in Figure 1-1.
This counter is measured when the SCCP sends a CR message.
Formula
None.
1.2.7 Number of Received CR Messages
Counter
L7006: Number of Received CR Messages.
Meaning
This counter measures the number of CR messages received by the SCCP.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 1-1.
This counter is measured when the SCCP receives a CR message.
Formula
None.
1.2.8 Number of Sent CREF Messages
Counter
L7007: Number of Sent CREF Messages.
Meaning
This counter measures the number of Connection Refused (CREF) messages sent by the
SCCP.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 1-1.
This counter is measured when the SCCP sends a CREF message.
Formula
None.
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1.2.9 Number of Received CREF Messages
Counter
L7008: Number of Received CREF Messages.
Meaning
This counter measures the number of CREF messages received by the SCCP.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 1-1.
This counter is measured when the SCCP receives a CREF message.
Formula
None.
1.2.10 Ratio of CREF by Peer SCCP
Counter
RL7009: Ratio of CREF by Peer SCCP.
Meaning
This counter is predefined. It measures the ratio of the Number of Received CREF Messages
to Number of Sent CR Messages.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 1-1.
This counter is measured when the measurement results are reported in a GP.
Formula
Ratio of CREF by Peer SCCP (%) = Number of Received CREF Messages *100/ Number of
Sent CR Messages.
1.2.11 Ratio of CREF by Local SCCP
Counter
RL7010: Ratio of CREF by Local SCCP.
Meaning
This counter is predefined. It measures the ratio of the Number of Sent CREF Messages to
Number of Received CR Messages.
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Trigger Point
The trigger point is on the BSC side, as shown in Figure 1-1.
This counter is measured when the measurement results are reported in a GP.
Formula
Ratio of CREF by Local SCCP (%) =
Number of Sent CREF Messages *100/ Number of Received CR Messages
1.2.12 Received CC Messages
Counter
L7011: Received CC Messages.
Meaning
This counter measures the number of times the SCCP module receives a Connection Confirm
(CC) message.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 1-1.
The measurement is triggered when the SCCP module receives a CC message.
Formula
None.
1.2.13 Sent CC Messages
Counter
L7012: Sent CC Messages.
Meaning
This counter measures the number of times the SCCP module sends a CC message.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 1-1.
The measurement is triggered when the SCCP module sends a CC message.
Formula
None.
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1.2.14 Sent DT1 Messages
Counter
L7013: Sent DT1 Messages.
Meaning
This counter measures the number of times the SCCP module sends a data form 1 (DT1)
message.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 1-1.
The measurement is triggered when the SCCP module sends a DT1 message.
Formula
None.
1.2.15 Received DT1 Messages
Counter
L7014: Received DT1 Messages.
Meaning
This counter meausres the number of times the SCCP module receives a DT1 message.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 1-1.
The measurement is triggered when the SCCP module receives a DT1 message.
Formula
None.
1.2.16 Sent RLSD Messages
Counter
L7015: Sent RLSD Messages.
Meaning
This counter measures the number of times the SCCP module sends a released (RLSD)
message.
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Trigger Point
The trigger point is on the BSC side, as shown in Figure 1-1.
The measurement is triggered when the SCCP module sends a RLSD message.
Formula
None.
1.2.17 Received RLSD Messages
Counter
L7016: Received RLSD Messages.
Meaning
This counter measures the number of times the SCCP module receives an RLSD message.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 1-1.
The measurement is triggered when the SCCP module receives a RLSD message.
Formula
None.
1.2.18 Sent RLC Messages
Counter
L7017: Sent RLC Messages.
Meaning
This counter measures the number of times the SCCP module sends a release complete (RLC)
message.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 1-1.
The measurement is triggered when the SCCP module sends an RLC message.
Formula
None.
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1.2.19 Received RLC Messages
Counter
L7018: Received RLC Messages.
Meaning
This counter measures the number of times the SCCP module receives an RLC message.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 1-1.
The measurement is triggered when the SCCP module receives a RLC message.
Formula
None.
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2
MTP3 Measurement
About This Chapter
The following table lists the sections of this chapter.
Section
Describes
2.1 Overview of MTP3
Measurement
Introduces the functions and measurement units of MTP3
Measurement.
2.2 MTP3 Link Measurement
Describes the functions and counters of MTP3 Link
Measurement.
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2.1 Overview of MTP3 Measurement
Message Transfer Part Level 3 (MTP3) Measurement is used to measure the MTP3 link, link
set, and Destination Signaling Points (DSPs).
Table 2-1 lists the measurement units of MTP3 Measurement.
Table 2-1 MTP3 Measurement Units
Measurement Unit
Section
MTP3 Link Measurement
2.2
2.2 MTP3 Link Measurement
2.2.1 Overview
MTP3 Link Measurement is used to measure the MTP3 link in normal, faulty, congestion, and
changing status. The measurement includes the number of messages sent and received on the
link, the duration of various states, and the number of status changes.
Table 2-2 lists the counters of MTP3 Link Measurement.
Table 2-2 Counters of MTP3 Link Measurement
2-2
Counter
Section
TL6001: In-Service Duration of MTP3 Link
2.2.2
L6002: Out-of-Service Duration of MTP3 Link
2.2.3
L6003: Duration of MTP3 Link Fault
2.2.4
L6004: Duration of MTP3 Link Local Inhibition
2.2.5
L6005: Duration of MTP3 Link Remote Inhibition
2.2.6
L6006: Duration of MTP3 Link Remote Processor Fault
2.2.7
L6007: Duration of MTP3 Link Congestion
2.2.8
L6008: Failures of MTP3 Link for All Reasons
2.2.9
L6009: MTP3 Link Local Inhibitions
2.2.10
L6010: MTP3 Link Remote Inhibitions
2.2.11
L6011: MTP3 Link Remote Processor Failures
2.2.12
L6012: MTP3 Link Local Switchovers
2.2.13
L6013: MSUs Sent on MTP3 Link
2.2.14
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Counter
Section
L6014: MSUs Received on MTP3 Link
2.2.15
L6015: MTP3 Link Congestions
2.2.16
L6016: Discarded MSUs during Link Congestion
2.2.17
L6017: Transfer Inhibition Messages Received on MTP3 Link
2.2.18
L6018: Octets in SIFs or SIOs Sent on MTP3 Link
2.2.19
L6019: Octets in SIFs and SIOs Received on MTP3 Link
2.2.20
L6020: 64 kbit/s Timeslots Seized by Signaling Link
2.2.21
RL6021: Ratio of Transmit Bandwidth to Total Bandwidth
2.2.22
RL6022: Ratio of Receive Bandwidth to Total Bandwidth
2.2.23
L6023: Bytes of MTP2 Message Head in MSU Messages on MTP3 Link
2.2.24
2.2.2 In-Service Duration of MTP3 Link
Counter
L6001: In-Service Duration of MTP3 Link.
Meaning
This counter measures the duration of the MTP3 link in service.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
Figure 2-1 MTP3 Measurement
A interface
BSC
MSC
This counter increases by 1 every second when the MTP3 link is in service.
Formula
In-Service Duration of MTP3 Link=
{GP}*{60}) – [Out-of-Service Duration of MTP3 Link]
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2.2.3 Out-of-Service Duration of MTP3 Link
Counter
L6002: Out-of-Service Duration of MTP3 Link.
Meaning
This counter measures the Out-of-Service Duration of MTP3 Link.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter increases by 1 every second when the MTP3 link is out of service.
Formula
None.
2.2.4 Duration of MTP3 Link Fault
Counter
L6003: Duration of MTP3 Link Fault.
Meaning
This counter measures the duration of MTP3 link fault.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter increases by 1 every second when the MTP3 link is faulty.
Formula
None.
2.2.5 Duration of MTP3 Link Local Inhibition
Counter
L6004: Duration of MTP3 Link Local Inhibit.
Meaning
This counter measures the duration of the MTP3 link local inhibition.
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Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter increases by 1 every second when the MTP3 link is at the local end inhibition.
Formula
None.
2.2.6 Duration of MTP3 Link Remote Inhibition
Counter
L6005: Duration of MTP3 Link Remote Inhibit.
Meaning
This counter measures the duration of MTP3 link remote inhibition.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter increases by 1 every second when the MTP3 link is in remote inhibition.
Formula
None.
2.2.7 Duration of MTP3 Link Remote Processor Fault
Counter
L6006: Duration of MTP3 Link Remote Processor Fault.
Meaning
This counter measures the duration of MTP3 link remote processor fault.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter increases by 1 every second when the MTP3 link remote processor is faulty.
Formula
None.
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2.2.8 Duration of MTP3 Link Congestion
Counter
L6007: Duration of MTP3 Link Congestion.
Meaning
This counter measures the duration of MTP3 link congestion.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter increases by 1 every second when the MTP3 link is congested.
Formula
None.
2.2.9 Failures of MTP3 Link for All Reasons
Counter
L6008: Failures of MTP3 Link for All Reasons.
Meaning
This counter measures the number of MTP3 link failures.
The MTP2 reports link disruption, and then the MTP3 detects the number of link failures
caused by signaling link disruption or link deactivation by the user.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter is measured when:
z
The MTP2 reports link disruption.
z
The signaling link is disrupted.
z
Link deactivation by the user succeeds.
Formula
None.
2.2.10 MTP3 Link Local Inhibitions
Counter
L6009: MTP3 Link Local Inhibitions.
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Meaning
This counter measures the number of MTP3 link local inhibitions.
The BSC inhibits a link on the LMT. If the inhibition does not lead to service interruption
between the BSC and the MSC, the local inhibition is considered to succeed.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter increases by 1 when the MTP3 link is inhibited at the local end.
Formula
None.
2.2.11 MTP3 Link Remote Inhibitions
Counter
L6010: MTP3 Link Remote Inhibitions.
Meaning
This counter measures the number of MTP3 link remote inhibitions.
The BSC receives a request from the MSC for inhibiting a link. If the inhibition does not lead
to service interruption between the BSC and the MSC, the remote inhibition is considered to
succeed.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter increases by 1 when the MTP3 link is inhibited at the remote end.
Formula
None.
2.2.12 MTP3 Link Remote Processor Failures
Counter
L6011: MTP3 Link Remote Processor Failures.
Meaning
This counter measures the number of failures of the MTP3 link remote processor.
The MTP3 link does not bear services after it receives a message indicating MSC processor
failure or detects an MSC processor failure. The MTP3 link recovers after it receives the
recover indication from the MTP2.
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Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter increases by 1 when the MTP3 link remote processor is faulty.
Formula
None.
2.2.13 MTP3 Link Local Switchovers
Counter
L6012: MTP3 Link Local Switchovers.
Meaning
This counter measures the number of MTP3 link local switchovers.
If a signaling link becomes unavailable, the traffic on this link is transferred to other links.
This procedure is called a changeover.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter increases by 1 when the MTP3 link changeover occurs at the local end.
Formula
None.
2.2.14 MSUs Sent on MTP3 Link
Counter
L6013: MSUs Sent on MTP3 Link.
Meaning
This counter measures the number of Message Signal Units (MSUs) sent on the MTP3 link.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter increases by 1 when the MTP3 link sends an MSU.
Formula
None.
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2.2.15 MSUs Received on MTP3 Link
Counter
L6014: MSUs Received on MTP3 Link.
Meaning
This counter measures the number of MSUs received by the MTP3 link.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter increases by 1 when the MTP3 link receives an MSU.
Formula
None.
2.2.16 MTP3 Link Congestions
Counter
L6015: MTP3 Link Congestions.
Meaning
This counter measures the number of MTP3 link congestions.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter increases by 1 every time the MTP3 link is congested.
Formula
None.
2.2.17 Discarded MSUs During Link Congestion
Counter
L6016: Discarded MSUs During Link Congestion
Meaning
This counter measures the number of MSUs that the MTP3 discards during signaling link
congestion.
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Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter increases by 1 when the MTP3 discards an MSU during signaling link
congestion.
Formula
None.
2.2.18 Transfer Inhibition Messages Received on MTP3 Link
Counter
L6017: Transfer Inhibition Messages Received on MTP3 Link.
Meaning
This counter measures the number of transfer inhibition messages that the MTP3 receives.
If the MSC cannot reach a DSP, it sends the transfer inhibition message to the MTP3.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter increases by 1 when the MTP3 receives a transfer inhibition message from the
remote end.
Formula
None.
2.2.19 Octets in SIFs or SIOs Sent on MTP3 Link
Counter
L6018: Octets in SIFs or SIOs Sent on MTP3 Link.
Meaning
This counter measures the number of octets in the Signaling Information Fields (SIFs) and
Service Information Octets (SIOs) sent on the MTP3 link.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter is measured when the MTP3 link sends SIFs and SIOs that contain octets.
Formula
None.
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2.2.20 Octets in SIFs and SIOs Received by MTP3 Link
Counter
L6019: Octets in SIF and SIO Received by MTP3 Link.
Meaning
This counter measures the number of octets in SIFs and SIOs received by the MTP3 link.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter is measured when the MTP3 link receives SIFs and SIOs that contain octets.
Formula
None.
2.2.21 64 kbit/s Timeslots Occupied by a Signaling Link
Counter
L6020: 64 kbit/s Timeslots Occupied by a Signaling Link.
Meaning
This counter measures the number of 64 kbit/s timeslots occupied by a signaling link.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter is measured when a signaling link is set up.
You can skip this counter.
Formula
None.
2.2.22 Ratio of Transmit Bandwidth to Total Bandwidth
Counter
RL6021: Ratio of Transmit Bandwidth to Total Bandwidth.
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Meaning
This counter measures the ratio of the transmit bandwidth to the total bandwidth of the
signaling link in a GP.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter is measured when the measurement result is reported in a GP.
Formula
Ratio of Transmit Bandwidth to Total Bandwidth=
(MSUs Sent on MTP3 Link * 6 + Octets in SIFs and SIOs Sent by MTP3) * 100/(8192 % 64
kbit/s Timeslots Seized by Signaling Link * GP * 60)
2.2.23 Ratio of Receive Bandwidth to Total Bandwidth
Counter
RL6022: Ratio of Receive Bandwidth to Total Bandwidth.
Meaning
This counter measures the ratio of the receive bandwidth to the total bandwidth of the
signaling link in a GP.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter is measured when the measurement result is reported in a GP.
Formula
Ratio of Receive Bandwidth to Total Bandwidth=
(MSUs Received by MTP3 Link * 6 + Octets in SIFs and SIOs Received by MTP3) *
100/(8192 * 64 kbit/s Timeslots Seized by Signaling Link * GP * 60)
2.2.24 Bytes of MTP2 Message Head in MSU Messages on MTP3
Link
Counter
L6023: Bytes of MTP2 Message Head in MSU Messages on MTP3 Link
Meaning
This counter measures the bytes of the MTP2 message head in the MSU messages on the
MTP3 link.
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Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter is measured when an MTP3 link object is created.
Formula
None.
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3 LAPD Measurement
3
LAPD Measurement
About This Chapter
The following table lists the sections of this chapter.
Section
Describes
3.1 Overview of LAPD
Measurement
Introduces the function and measurement unit of LAPD
Link Measurement.
3.2 LAPD Link Measurement
Describes the function and counters of LAPD Link
Measurement.
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3.1 Overview of LAPD Measurement
LAPD Measurement is used to measure the basic signaling process and the traffic volume on
the Abis and Pb interfaces.
Table 11-1 lists the measurement unit of LAPD Measurement.
Table 3-1 Measurement unit of LAPD Measurement
Measurement Unit
Section
LAPD Link Measurement
3.2
3.2 LAPD Link Measurement
3.2.1 Overview
The LAPD link is the signaling transfer channel between the BSC and the BTS, and between
the BSC and the PCU.
LAPD Link Measurement is used to measure the number of Q921 protocol frames related to
the LAPD link on the BSC side.
Table 3-2 lists the counters of LAPD Link Measurement.
Table 3-2 Counters of LAPD Link Measurement
3-2
Counter
Section
L5001: SABME Frames Sent on LAPD Link
3.2.2
L5002: SABME Frames Received on LAPD Link
3.2.3
L5003: REJ Frames Sent on LAPD Link
3.2.4
L5004: REJ Frames Received on LAPD Link
3.2.5
L5005: RNR Frames Sent on LAPD Link
3.2.6
L5006: RNR Frames Received on LAPD Link
3.2.7
L5007: I Frames Resent on LAPD Link
3.2.8
L5008: Incorrect I Frames Received on LAPD Link
3.2.9
L5009: I Frames Received on LAPD Link from Application Layer
3.2.10
L5010: I Frames Sent on LAPD Link
3.2.11
L5011: I Frames Received on LAPD Link
3.2.12
L5012: I Frames Discarded on LAPD Link
3.2.13
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Section
L5013: UA Frames Sent on LAPD Link
3.2.14
L5014: UA Frames Received on LAPD Link
3.2.15
L5015: UI Frames Received on LAPD Link
3.2.16
3.2.2 SABME Frames Sent on LAPD Link
Counter
L5001: SABME Frames Sent on LAPD Link.
Meaning
This counter measures the number of SABME frames sent on LAPD links.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1
Figure 3-1 LAPD link measurement
Abis interface
BTS
BSC
Pb interface
PCU
This counter is measured when the BSC sends SABME frames to the BTS or the PCU during
initial link setup or link disruption.
Formula
None.
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3.2.3 SABME Frames Received on LAPD Link
Counter
L5002: SABME Frames Received on LAPD Link.
Meaning
This counter measures the number of SABME frames received on LAPD links.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter is measured when the BSC receives SABME frames from the BTS or the PCU
after LAPD link setup.
Formula
None.
3.2.4 REJ Frames Sent on LAPD Link
Counter
L5003: REJ Frames Sent on LAPD Link.
Meaning
This counter measures the number of REJ frames sent on LAPD links.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter is measured when the BSC sends REJ frames to the BTS or the PCU after the
LAPD link receives incorrect frames.
Formula
None.
3.2.5 REJ Frames Received on LAPD Link
Counter
L5004: REJ Frames Received on LAPD Link
Meaning
This counter measures the number of REJ frames received on LAPD links.
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Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter is measured when the BSC receives REJ frames from the BTS or the PCU.
Formula
None.
3.2.6 RNR Frames Sent on LAPD Link
Counter
L5005: RNR Frames Sent on LAPD Link.
Meaning
This counter measures the number of RNR frames sent on LAPD links.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter is measured when the BSC sends RNR frames to the BTS or the PCU after it
receives RR frames when it is busy.
Formula
None.
3.2.7 RNR Frames Received on LAPD Link
Counter
L5006: RNR Frames Received on LAPD Link.
Meaning
This counter measures the number of RNR frames received on LAPD links.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter is measured when the BSC receives RNR frames from the BTS or the PCU.
Formula
None.
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3.2.8 I Frames Resent on LAPD Link
Counter
L5007: I Frames Resent on LAPD Link.
Meaning
This counter measures the number of I frames resent on LAPD links.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter is measured when the BSC resends I frames to the BTS or the PCU.
Formula
None.
3.2.9 Incorrect I Frames Received on LAPD Link
Counter
L5008: Incorrect I Frames Received on LAPD Link.
Meaning
This counter measures the number of incorrect frames received on LAPD links.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter is measured when the BSC receives incorrect I frames from the BTS or the PCU.
Formula
None.
3.2.10 I Frames Received on LAPD Link from Application Layer
Counter
L5009: I Frames Received by LAPD Link from Application Layer
Meaning
This counter measures the number of I frames that the LAPD link receives from the
application layer.
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Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter is measured when the LAPD link receives I frames from the application layer.
Formula
None.
3.2.11 I Frames Sent on LAPD Link
Counter
L5010: I Frames Sent on LAPD Link.
Meaning
This counter measures the number of I frames sent on the LAPD link.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter is measured when the LAPD link sends I frames to the BTS or the PCU.
Formula
None.
3.2.12 I Frames Received by LAPD Link
Counter
L5011: I Frames Received by LAPD Link.
Meaning
This counter measures the number of I frames received by the LAPD link.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter is measured when the LAPD link receives I frames from the BTS or the PCU.
Formula
None.
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3.2.13 I Frames Discarded by LAPD Link
Counter
L5012: I Frames Discarded by LAPD Link.
Meaning
This counter measures the number of I frames discarded by the LAPD link.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter is measured when the LAPD link discards the I frames sent from the application
layer if the I frame queue overflows.
Formula
None.
3.2.14 UA Frames Sent on LAPD Link
Counter
L5013: UA Frames Sent on LAPD Link.
Meaning
This counter measures the number of UA frames sent on the LAPD link.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter is measured when the LAPD link sends UA frames to the BTS or the PCU after
it receives SABME frames.
Formula
None.
3.2.15 UA Frames Received by LAPD Link
Counter
L5014: UA Frames Received by LAPD Link.
Meaning
This counter measures the number of UA frames received by the LAPD link.
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Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter is measured when the LAPD link receives UA frames from the BTS or the PCU.
Formula
None.
3.2.16 UI Frames Received by LAPD Link
Counter
L5015: UI Frames Received by LAPD Link.
Meaning
This counter measures the number of UI frames received by the LAPD link.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter is measured when the LAPD link receives UI frames sent from the BTS or the
PCU.
Formula
None.
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4
4 System Load Measurement
System Load Measurement
About This Chapter
The following table lists the sections of this chapter.
Section
Describes
4.1 Overview of System Load
Measurement
Introduces System Load Measurement and its
measurement unit.
4.2 CPU Usage Measurement
Describes CPU Usage Measurement and its counters.
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4.1 Overview of System Load Measurement
System Load Measurement refers to the measurement of the system load of the BSC. The
system load refers to the CPU usage of the BSC boards and the GBAM.
The CPU usage shows the load situation of the system, but a 100% CPU usage does not mean
that the CPU has reached its limitation and cannot process extra services. The BSC has a
certain buffer capability, which can save extra service requests. As long as there is still a
buffer area in the host, the BSC continues to process new services. Therefore, high CPU
usage does not necessarily mean that the BSC is faulty, even if the CPU usage reaches 80%
occasionally.
The buffer area of the BSC is limited. If the CPU usage is high for a long time, a transient
exhaustion of the buffer area may occur because there are sharp bursts of service requests.
The BSC will abandon new service requests.
Table 11-1 lists the measurement unit of System Load Measurement.
Table 4-1 Measurement unit of System Load Measurement
Measurement Unit
Section
CPU Usage Measurement
4.2
4.2 CPU Usage Measurement
4.2.1 Overview
CPU Usage Measurement is used to measure the CPU usage of BSC boards and the GBAM.
Table 4-2 lists the counters of CPU Usage Measurement.
Table 4-2 Counters of CPU Usage Measurement
4-2
Counter
Section
AR9702: Mean CPU Usage
4.2.2
R9703: Maximum CPU Usage
4.2.3
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4.2.2 Mean CPU Usage
Counter
AR9702: Mean CPU Usage
Meaning
This counter measures the mean ratio of the busy time of the CPU in a Granularity Period
(GP). The counter shows the load situation of the BSC.
Trigger Point
None.
Formula
Mean CPU Usage = [Accumulated CPU Usage] / [Number of CPU Usage Measurements]
After a board or the GBAM runs for 30 seconds, the BSC measures the CPU usage every second and
obtains Accumulated CPU Usage in a GP. Number of CPU Usage Measurements refers to the number of
times the BSC measure the CPU usage.
4.2.3 Maximum CPU Usage
Counter
R9703: Maximum CPU Usage
Meaning
This counter measures the maximum CPU usage in a GP.
Trigger Point
The BSC measures the CPU usage every second in a GP and compares it with the current
value. The measurement is triggered when the BSC detects the maximum CPU usage in a GP.
Formula
None.
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5
BTSM Management
About This Chapter
The following table lists the sections of this chapter.
Section
Describes
5.1 Overview of BTSM
Measurement
Introduces the measurement units of BTSM
Measurement.
5.2 BTS State Measurement
per BTS
Describes the function and counters of BTS State
Measurement per BTS.
5.3 BTS Configuration
Measurement per BM Subrack
Describes the function and counters of BTS Configuration
Measurement per BM Subrack.
5.4 Cell State Measurement
per Cell
Describes the function and counters of Cell State
Measurement per Cell.
5.5 Cell Configuration
Measurement per BM Subrack
Describes the function and counters of Cell Configuration
Measurement per BM Subrack.
5.6 TRX State Measurement
per TRX
Describes the function and counters of TRX State
Measurement per TRX.
5.7 TRX Configuration
Measurement per BM Subrack
Describes the function and counters of TRX
Configuration Measurement per BM Subrack.
5.8 CRC Error Measurement
per BTS
Describes the function and counters of CRC Error
Measurement per BTS.
5.9 CRC Serious Error
Measurement per BTS
Describes the function and counters of CRC Serious Error
Measurement per BTS.
5.10 OML Measurement per
BTS
Describes the function and counters of OML
Measurement per BTS.
5.11 RSL Measurement per
TRX
Describes the function and counters of RSL Measurement
per TRX.
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5.1 Overview of BTSM Measurement
Base Transceiver Station Management (BTSM) measurement is used to measure the state of
the BTS, cell, and TRX, and link communication state between the BSC and the BTS.
Table 5-1 lists the measurement units of BTSM management.
Table 5-1 Measurement units of BTSM Measurement
Measurement Unit
Section
BTS State Measurement per BTS
5.2
BTS Configuration Measurement per BM Subrack
5.3
Cell State Measurement per Cell
5.4
Cell Configuration Measurement per BM Subrack
5.5
TRX State Measurement per TRX
5.6
TRX Configuration Measurement per BM Subrack
5.7
CRC Error Measurement per BTS
5.8
CRC Serious Error Measurement per BTS
5.9
OML Measurement per BTS
5.10
RSL Measurement per TRX
5.11
BM: Basic Module
BM subrack = GSM Main Processing Subrack (GMPS)/GSM Extended Processing Subrack (GEPS)
5.2 BTS State Measurement per BTS
5.2.1 Overview
BTS State Measurement per BTS is used to measure the BTS reset state, services state, and
OML communication state.
Table 5-2 lists the counters of BTS State Measurement per BTS.
Table 5-2 Counters of BTS State Measurement per BTS
5-2
Counter
Section
R2701: Successful BTS Initializations
5.2.2
R2702: Failed BTS Initializations
5.2.3
L2130: BTS OML Disruption Duration
5.2.4
R273: BTS Out-of-Service Duration
5.2.5
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Counter
Section
TR273: BTS Availability
5.2.6
CR273: BTS In-Service Duration
5.2.7
5.2.2 Successful BTS Initializations
Counter
R2701: Successful BTS Initializations.
Meaning
This counter measures the number of successful BTS initializations.
Trigger Point
This counter is measured when BTS initialization succeeds.
Formula
None.
5.2.3 Failed BTS Initializations
Counter
R2702: Failed BTS Initializations.
Meaning
This counter measures the number of failed BTS initializations.
Trigger Point
This counter is measured when:
z
BTS initialization fails.
z
BTS initialization fails for the second time.
z
Flow control is generated during BTS initialization.
Formula
None.
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5.2.4 BTS OML Disruption Duration
Counter
L2130: BTS OML Disruption Duration.
Meaning
When the OML between the BTS and the BSC is faulty, the OML of this BTS is considered
disrupted, and the duration of the disruption is measured.
Trigger Point
This counter is measured when the BTS OML is disrupted.
Formula
None.
5.2.5 BTS Out-of-Service Duration
Counter
R273: Duration of Site Out of Service.
Meaning
When the main Broadcast Control Channels (BCCHs) of all the cells under the BTS are faulty,
the BTS is considered to be out of service and the duration is measured.
Trigger Point
This counter is measured when the BSC detects faults in the main BCCHs of all the cells
under one BTS.
In some occasions, this counter may have an error of five seconds (the sampling period).
Formula
None.
5.2.6 BTS Availability
Counter
TR273: BTS Availability.
Meaning
This counter measures the BTS availability in a Granularity Period (GP).
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Trigger Point
None.
Formula
[BTS Availability] = [BTS In-Service Duration]*{100}/({GP}*{60})
GP unit: minute
5.2.7 BTS In-Service Duration
Counter
CR273: BTS In-Service Duration.
Meaning
This counter measures the duration of the BTS in service in a GP.
Trigger Point
None.
Formula
[BTS In-Service Duration] = {GP}*{60} – [BTS Out-of-Service Duration]
GP unit: minute
5.3 BTS Configuration Measurement per BM Subrack
5.3.1 Overview
BTS Configuration Measurement per BM Subrack is used to measure the activated and
available BTSs.
Table 5-3 lists the counters of BTS Configuration Measurement per BM Subrack.
Table 5-3 Counters of BTS Configuration Measurement per BM Subrack
Counter
Section
R260: Activated BTSs
5.3.2
R261: Available BTSs
5.3.3
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5.3.2 Activated BTSs
Counter
R260: Activated BTSs.
Meaning
This counter measures the number of activated BTSs in data configuration.
Trigger Point
None.
Formula
None.
5.3.3 Available BTSs
Counter
R261: Available BTSs.
Meaning
This counter measures the number of BTSs that are in the ENABLE state.
Trigger Point
The BSC queries the operation state of the BTS regularly and measures the number of
activated BTSs.
Formula
None.
5.4 Cell State Measurement per Cell
5.4.1 Overview
Cell State Measurement per Cell is used to measure the cell reset state, cell service state, and
mutual aid state.
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Table 5-4 lists the counters of Cell State Measurement per Cell.
Table 5-4 Counters of Cell State Measurement per Cell
Counter
Section
R3701: Successful Cell Initializations
5.4.2
R3702: Failed Cell Initializations
5.4.3
R3710: Cell BCCH Mutual Aid
5.4.4
R3711: Recoveries after Cell BCCH Mutual Aid
5.4.5
R3720: Cell Baseband Hopping Mutual Aid
5.4.6
R3721: Recoveries after Cell Baseband Hopping Mutual Aid
5.4.7
R373: Cell Out-of-Service Duration
5.4.8
TR373: Cell Availability Duration
5.4.9
CR373: Cell In-Service Duration
5.4.10
5.4.2 Successful Cell Initializations
Counter
R3701: Successful Cell Initializations.
Meaning
This counter measures the number of successful cell initializations.
Trigger Point
This counter is measured when cell initialization succeeds.
Formula
None.
5.4.3 Failed Cell Initializations
Counter
R3702: Failed Cell Initializations.
Meaning
This counter measures the number of failed cell initializations.
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Trigger Point
This counter is measured when:
z
Cell initialization fails.
z
Cell initialization fails for the second time.
z
Flow control is generated during cell initialization.
Formula
None.
5.4.4 Cell BCCH Mutual Aid
Counter
R3710: Cell BCCH Mutual Aid.
Meaning
If the main BCCH of a cell is faulty, to ensure the continuity of services, the BSC allocates a
TCH of another TRX as a new BCCH. This is called BCCH mutual aid. This counter
measures the number of BCCH mutual aid.
Trigger Point
If the main BCCH of a cell is faulty, the BSC allocates a TCH of another TRX as a new
BCCH and accumulates the BCCH mutual aid.
Formula
None.
5.4.5 Recoveries after Cell BCCH Mutual Aid
Counter
R3711: Recoveries after Cell BCCH Mutual Aid.
Meaning
When the BSC detects that the original faulty TRX recovers after the mutual aid, the BSC
adjusts the BCCH back to the original TRX.
Trigger Point
When the BSC detects that the original faulty TRX recovers after the mutual aid, the BSC
adjusts the BCCH back to the original TRX and accumulates the recoveries.
Formula
None.
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5.4.6 Cell Baseband Hopping Mutual Aid
Counter
R3720: Cell Baseband Hopping Mutual Aid.
Meaning
If the TRXs that are involved in baseband hopping are faulty, the baseband hopping function
of this cell is disabled.
Trigger Point
If the TRXs that are involved in baseband hopping are faulty, the BSC disables the baseband
hopping function of this cell and accumulates the baseband hopping mutual aid.
Formula
None.
5.4.7 Recoveries After Cell Baseband Hopping Mutual Aid
Counter
R3721: Recoveries After Cell Baseband Hopping Mutual Aid.
Meaning
If the BSC detects that all the faulty TRXs that are involved in baseband hopping are
recovered, the baseband hopping function is resumed.
Trigger Point
After cell baseband hopping mutual aid, the BSC detects the original faulty TRXs at regular
intervals. If these faulty TRXs are recovered, the baseband hopping function is resumed, and
the recoveries after cell baseband hopping mutual aid are accumulated.
Formula
None.
5.4.8 Cell Out-of-Service Duration
Counter
R373: Cell Out-of-Service Duration.
Meaning
If the main BCCH of a cell is faulty, this cell is considered to be out of service. This counter
measures the Cell Out-of-Service Duration.
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Trigger Point
This counter is measured when the BSC detects that the main BCCH of a cell is faulty.
In some occasions, this counter may have an error of five seconds (the sampling period).
Formula
None.
5.4.9 Cell Availability
Counter
TR373: Cell Availability
Meaning
This counter is used to measure the cell availability in a GP.
Trigger Point
None.
Formula
[Cell Availability] = [Cell In-Service Duration]*{100}/({GP}*{60})
GP unit: minute
5.4.10 Cell In-Service Duration
Counter
CR373: Cell In-Service Duration.
Meaning
This counter measures the duration of a cell in service in a GP.
Trigger Point
None.
Formula
[Cell In-Service Duration] = {GP}*{60} – [Cell Out-of-Service Duration]
GP unit: minute
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5.5 Cell Configuration Measurement per BM Subrack
5.5.1 Overview
Configuration Measurement <BM Subrack> is used to measure the number of activated cells
and available cells.
Table 5-5 lists the counters of Cell Configuration Measurement per BM Subrack.
Table 5-5 Counters of Cell Configuration Measurement per BM Subrack
Counter
Section
R360: Activated cells
5.5.2
R361: Available cells
5.5.3
5.5.2 Activated Cells
Counter
R360: Activated Cells.
Meaning
This counter measures the number of activated cells in data configuration.
Trigger Point
None.
Formula
None.
5.5.3 Available Cells
Counter
R361: Available Cells.
Meaning
This counter measures the number of cells whose operation state is ENABLE.
Trigger Point
The BSC queries the operation state of cells at regular intervals and measures the number of
activated cells.
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Formula
None.
5.6 TRX State Measurement per TRX
5.6.1 Overview
TRX State Measurement per TRX is used to measure the TRX Out-of-Service Duration.
Table 5-6 lists the counter of TRX State Measurement per TRX.
Table 5-6 Counters of TRX State Measurement per TRX
Counter
Section
R473: TRX Out-of-Service Duration
5.6.2
5.6.2 TRX Out-of-Service Duration
Counter
R473: TRX Out-of-Service Duration.
Meaning
This counter measures the out-of-service duration of the TRX.
The TRX is considered out of service when all the channels on the TRX cannot provide
services.
Trigger Point
This counter is measured when the BSC detects that none of the TCHs are available.
In some occasions, this counter may have an error of five seconds (the sampling period).
Formula
None.
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5.7 TRX Configuration Measurement per BM Subrack
5.7.1 Overview
TRX Configuration Measurement per BM Subrack is used to measure the number of activated
and available TRXs, and the TRX availability.
Table 5-7 lists the counters of TRX Configuration Measurement per BM Subrack.
Table 5-7 Counters of TRX Configuration Measurement per BM Subrack
Counter
Section
R460: Activated TRXs
5.7.2
R461: Available TRXs
5.7.3
RR461: TRX Availability
5.7.4
5.7.2 Activated TRXs
Counter
R460: Activated TRXs.
Meaning
This counter measures the number of activated TRXs in data configuration.
Trigger Point
None.
Formula
None.
5.7.3 Available TRXs
Counter
R461: Available TRXs.
Meaning
This counter measures the number of TRXs whose operation state is ENABLE.
Trigger Point
This counter is measured when the BSC queries the operation state of TRXs at regular
intervals and measures the number of available TRXs.
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Formula
None.
5.7.4 TRX Availability
Counter
RR461: TRX Availability
Meaning
This counter measures the ratio of the number of available TRXs to the number of the
configured TRXs.
Trigger Point
None.
Formula
[TRX Availability] = [Available TRXs]*{100}/[Configured TRXs]
5.8 CRC Error Measurement per BTS
5.8.1 Overview
CRC Error Measurement per BTS is used to measure the duration of CRC error on E1 ports
on the Abis interface. This measurement unit reflects the communication status of E1 cables
between the BSC and the BTS.
Table 5-8 lists the counter of CRC Error Measurement per BTS.
Table 5-8 Counters of CRC Error Measurement per BTS
5-14
Counter
Section
Duration of CRC Error on Ports 0 Through 23
5.8.2
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5.8.2 Duration of CRC Error on Ports 0 Through 23
Counter
Table 5-9 lists the counters of Duration of CRC Error on Ports 0 Through 23.
Table 5-9 Counters of Duration of CRC Error on Ports 0 Through 23
Number
Counter
1
L2100A: Duration of CRC Error on Port 0
2
L2101A: Duration of CRC Error on Port 1
3
L2102A: Duration of CRC Error on Port 2
4
L2103A: Duration of CRC Error on Port 3
5
L2104A: Duration of CRC Error on Port 4
6
L2105A: Duration of CRC Error on Port 5
7
L2106A: Duration of CRC Error on Port 6
8
L2107A: Duration of CRC Error on Port 7
9
L2108A: Duration of CRC Error on Port 8
10
L2109A: Duration of CRC Error on Port 9
11
L2110A: Duration of CRC Error on Port 10
12
L2111A: Duration of CRC Error on Port 11
13
L2112A: Duration of CRC Error on Port 12
14
L2113A: Duration of CRC Error on Port 13
15
L2114A: Duration of CRC Error on Port 14
16
L2115A: Duration of CRC Error on Port 15
17
L2116A: Duration of CRC Error on Port 16
18
L2117A: Duration of CRC Error on Port 17
19
L2118A: Duration of CRC Error on Port 18
20
L2119A: Duration of CRC Error on Port 19
21
L2120A: Duration of CRC Error on Port 20
22
L2121A: Duration of CRC Error on Port 21
23
L2122A: Duration of CRC Error on Port 22
24
L2123A: Duration of CRC Error on Port 23
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Meaning
The BSC and the BTS communicate through E1 cables.
The BTS detects whether there are CRC errors on E1 ports every second. If an error occurs,
the number on the counter increases by one, and the total is reported to the BSC every five
minutes. Then the BSC accumulates the reported numbers to get the value in a GP.
This counter measures the duration of CRC errors on E1 ports. The greater the value is, the
worse the transmission quality will be.
Trigger Point
The BTS reports the message containing CRC authentication results to the BSC every five
minutes. Then the BSC measures this counter according to the port number in the message.
Formula
None.
5.9 CRC Serious Error Measurement per BTS
5.9.1 Overview
CRC Serious Error Measurement per BTS is used to measure the duration of CRC serious
error on E1 ports on the Abis interface. This measurement unit reflects the communication
status of E1 cables between the BSC and the BTS.
Table 5-10 lists the counter of CRC Serious Error Measurement per BTS.
Table 5-10 Counter of CRC Serious Error Measurement per BTS
Counter
Section
Duration of Serious CRC Error on Ports 0 Through 23
5.9.2
5.9.2 Duration of Serious CRC Error on Ports 0 Through 23
Counter
Table 5-11 lists the counters of Duration of Serious CRC Error on Ports 0 Through 23.
Table 5-11 Counters of Duration of Serious CRC Error on Ports 0 Through 23
5-16
Number
Counter
1
L2100B: Duration of Serious CRC Error on Port 0
2
L2101B: Duration of Serious CRC Error on Port 1
3
L2102B: Duration of Serious CRC Error on Port 2
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Counter
4
L2103B: Duration of Serious CRC Error on Port 3
5
L2104B: Duration of Serious CRC Error on Port 4
6
L2105B: Duration of Serious CRC Error on Port 5
7
L2106B: Duration of Serious CRC Error on Port 6
8
L2107B: Duration of Serious CRC Error on Port 7
9
L2108B: Duration of Serious CRC Error on Port 8
10
L2109B: Duration of Serious CRC Error on Port 9
11
L2110B: Duration of Serious CRC Error on Port 10
12
L2111B: Duration of Serious CRC Error on Port 11
13
L2112B: Duration of Serious CRC Error on Port 12
14
L2113B: Duration of Serious CRC Error on Port 13
15
L2114B: Duration of Serious CRC Error on Port 14
16
L2115B: Duration of Serious CRC Error on Port 15
17
L2116B: Duration of Serious CRC Error on Port 16
18
L2117B: Duration of Serious CRC Error on Port 17
19
L2118B: Duration of Serious CRC Error on Port 18
20
L2119B: Duration of Serious CRC Error on Port 19
21
L2120B: Duration of Serious CRC Error on Port 20
22
L2121B: Duration of Serious CRC Error on Port 21
23
L2122B: Duration of Serious CRC Error on Port 22
24
L2123B: Duration of Serious CRC Error on Port 23
5 BTSM Management
Meaning
The BSC and the BTS communicate through E1 cables.
The BTS detects whether there are CRC serious errors on E1 ports every second. If a serious
error occurs, the number on the counter increases by one, and the total is reported to the BSC
every five minutes. Then the BSC accumulates the reported numbers to get the value in a GP.
This counter measures the duration of CRC serious errors on E1 ports. The greater the value is,
the worse the transmission quality will be.
Trigger Point
The BTS reports the message containing CRC authentication results to the BSC every five
minutes. Then the BSC measures this counter according to the port number in the message.
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Formula
None.
5.10 OML Measurement per BTS
5.10.1 Overview
OML Measurement per BTS is used to measure the number of various frames sent between
the BSC and the BTS.
Table 5-12 lists the counters of OML Measurement per BTS.
Table 5-12 Counters of OML Measurement per BTS
5-18
Counter
Section
L2131: OML Setup Requests Sent by BTS
5.10.2
L2132: OML Setup Requests Received by BTS
5.10.3
L2133: BTS-Sent Rejects to the OML Setup Requests
5.10.4
L2134: BTS-Received Rejects to the OML Setup Requests
5.10.5
L2135: OML RNR Frames Sent by BTS
5.10.6
L2136: OML RNR Frames Received by BTS
5.10.7
L2137: OML I Frames Resent by BTS
5.10.8
L2138: OML NRERR Received by BTS
5.10.9
L2139: OML L3 Data Requests Received by BTS
5.10.10
L2140: OML I Frames Sent by BTS
5.10.11
L2141: OML I Frames Received by BTS
5.10.12
L2142: Queue Overflows of OML Messages Sent by BTS
5.10.13
L2143: Erroneously Received OML Long Frames by BTS
Physical Layer
5.10.14
L2144: Erroneously Received OML Octet Errors Received by
BTS Physical Layer
5.10.15
L2145: OML Discarded Series Received by BTS Physical Layer
5.10.16
L2146: OML CRC Errors Received by BTS
5.10.17
L2147: L1 and L2 Overflows of BTS OML
5.10.18
L2148: Total OML Frames Received by BTS Physical Layer
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5.10.2 OML Setup Requests Sent by BTS
Counter
L2131: OML Setup Requests Sent by BTS.
Meaning
This counter measures the number of SABME frames that the BTS L2 sends on the OML.
The SABME frame is sent to request for link setup.
During the startup and normal operation of the BSC, the BTS does not initiate a link setup
request or send SABME frames to the BSC. If the OML status is converted to multi-frame
(Multi_I) setup, the BTS may send SABME frames to the BSC.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC and this
counter does not increase.
Trigger Point
This counter is measured when the BTS L2 sends an SAMBE frame on the OML.
Formula
None.
5.10.3 OML Setup Requests Received by BTS
Counter
L2132: OML Setup Requests Received by BTS.
Meaning
This counter measures the number of SABME frames that the BTS L2 receives on the OML.
The SABME frame is sent to request for link setup.
After the BSC starts up, the link status is converted to multi-frame (Multi_I) setup through the
frame interaction between the L2 entities of the BSC and the BTS. During this procedure, the
Abis interface board sends the SABME frame to the BTS L2. If the link is abnormal or the
link between the BSC and the BTS is disrupted, the BSC sends the SABME frame to request
for link setup.
If the physical uplink is disrupted, the BTS does not receive frames from the BSC and this
counter does not increase.
If the physical downlink is disrupted, the measurement result cannot be sent to the BSC and
this counter does not increase.
Trigger Point
This counter is measured when the BTS L2 receives an SAMBE frame on the OML.
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Formula
None.
5.10.4 BTS-Sent Rejects to the OML Setup Requests
Counter
L2133: BTS-Sent Rejects to the OML Setup Requests.
Meaning
This counter measures the number of REJ frames that the BTS L2 sends on the OML.
The REJ frame is a monitoring frame, which means that the received I frame (information
frame) is rejected. The REJ frame contains the serial number of the expected I Frame.
I frames are numbered in sequence. The BTS L2 has records for received and sent I frames.
Normally, the value of this counter should be 0. If the BTS receives an I frame with an
unexpected number, it sends a REJ frame to the BSC, and this counter increases by 1.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC and this
counter does not increase.
Trigger Point
This counter is measured when the BTS L2 sends a REJ frame on the OML.
Formula
None.
5.10.5 BTS-Received Rejects to the OML Setup Requests
Counter
L2134: BTS-Received Rejects to the OML Setup Requests.
Meaning
This counter measures the number of REJ frames that the BTS L2 receives on the OML.
The REJ frame is a monitoring frame, which means that the received I frame (information
frame) is rejected. The REJ frame contains the serial number of the expected I frame.
I frames are numbered in sequence. The BTS L2 has records for received and sent I frames.
Normally, the value of this counter should be 0. If the BSC receives an I frame with an
unexpected number, it sends a REJ frame to the BTS, and this counter increases by 1.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC and this
counter does not increase.
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Trigger Point
This counter is measured when the BTS L2 sends a REJ frame on the OML.
Formula
None.
5.10.6 OML RNR Frames Sent by BTS
Counter
L2135: OML RNR Frames Sent by BTS
Meaning
This counter measures the number of RNR frames that the BTS L2 sends on the OML.
The RNR frame is a monitoring frame, which means that the local receiver is busy and is not
ready to receive the next I frame. The RNR frame contains the serial number of the expected I
frame. The peer end stops sending I frames on receiving the RNR frame.
If the BTS receiver is busy, the BTS sends an RNR frame to the BSC. The BSC stops sending
I frames on receiving the RNR frame.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC and this
counter does not increase.
Trigger Point
This counter is measured when the BTS L2 sends an RNR frame on the OML.
Formula
None.
5.10.7 OML RNR Frames Received by BTS
Counter
L2136: OML RNR Frames Received by BTS
Meaning
This counter measures the number of RNR frames that the BTS L2 receives on the OML.
The RNR frame is a monitoring frame, which means that the local receiver is busy and is not
ready to receive the next I frame. The RNR frame contains the serial number of the expected I
frame. The peer end stops sending I frames on receiving RNR frames.
If the BSC receiver is busy, the BSC sends an RNR frame to the BTS. The BTS stops sending
I frames on receiving the RNR frame.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC and this
counter does not increase.
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Trigger Point
This counter is measured when the BTS L2 sends an RNR frame on the OML.
Formula
None.
5.10.8 OML I Frames Resent by BTS
Counter
L2137: OML I Frames Resent by BTS.
Meaning
This counter measures the number of I frames that the BTS L2 resends on the OML.
If the BTS receives a REJ frame from the BSC, it means that an error occurs when the BSC
receives I frames. Then the BTS resends this I frame and all the I frames with numbers bigger
than this number.
If the BTS receives an RNR frame from the BSC, it means that the L2 receiver of the BSC is
busy and cannot receive I frames. Then the BTS resends this I frame and all the I frames with
numbers bigger than this number after the L2 receiver of the BSC is free.
This counter increases by 1 when the BTS resends an I frame.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC and this
counter does not increase.
Trigger Point
This counter is measured when the BTS L2 resends an I frame on the OML.
Formula
None.
5.10.9 OML NRERR Received by BTS
Counter
L2138: OML NRERR Received by BTS.
Meaning
This counter measures the number of frames that the BTS L2 OML receives whose numbers
are different from those of the to-be-sent frames.
The RR frames, RNR frames, REJ frames, and I frames sent from the BSC to the BTS contain
the numbers of the to-be-sent I frames. The BTS records the number range of the to-be-sent I
frames. If the received I frame number is not within the range, this number is considered
incorrect, and this counter increases by 1.
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If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and this
counter does not increase.
Trigger Point
This counter is measured when the BTS L2 receives OML frames whose numbers are
different from those of the to-be-sent frames.
Formula
None.
5.10.10 OML L3 Data Requests Received by BTS
Counter
L2139: OML L3 Data Requests Received by BTS
Meaning
This counter measures the number of requests that are sent from OML L3 to L2 and contain
the to-be-confirmed messages.
The requests sent from L3 consist of the messages that need or need not be confirmed. The
former are transferred in L2 I frames and the latter are transferred in L2 UI frames.
All the L3 messages sent by the BTS except for the MR need be confirmed. If the BTS L2
receives one request containing the to-be-confirmed message from L3, this counter increases
by 1.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and this
counter does not increase.
Trigger Point
This counter is measured when the BTS L2 OML receives the request containing the to-beconfirmed message from L3.
Formula
None.
5.10.11 OML I Frames Sent by BTS
Counter
L2140: OML I Frames Sent by BTS.
Meaning
This counter measures the number of I frames sent by the BTS L2 on the OML.
The requests sent from L3 consist of the messages that need or need not be confirmed. The
former are transferred in L2 I frames and the latter transferred in L2 UI frames.
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All the L3 messages sent by the BTS except for the MR need be confirmed. When the BTS
L2 sends an I frame on the OML, this counter increases by 1.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and this
counter does not increase.
Trigger Point
This counter is measured when the BTS L2 sends an I frame on the OML.
Formula
None.
5.10.12 OML I Frames Received by BTS
Counter
L2141: OML I Frames Received by BTS.
Meaning
This counter measures the number of I frames the BTS L2 receives on the OML.
The requests sent from L3 consist of the messages that need or need not be confirmed. The
former are transferred in L2 I frames and the latter are transferred in L2 UI frames.
All the L3 messages sent by the BSC need be confirmed. If the BTS L2 receives one I frame,
this counter increases by 1.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and this
counter does not increase.
Trigger Point
This counter is measured when the BTS L2 receives an I frame on the OML.
Formula
None.
5.10.13 Queue Overflows of OML Messages Sent by BTS
Counter
L2142: Queue Overflows of OML Messages Sent by BTS.
Meaning
The requests sent from L3 consist of the messages that need or need not be confirmed. The
former are transferred in L2 I frames and the latter are transferred in L2 UI frames.
When the BTS L2 sends the to-be-confirmed messages through I frames, it puts the I frames
in a message queue and sends them in sequence.
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If too many messages are to be sent within a short period of time by L3, the message queue
overflows, messages are lost, and this counter increases by 1.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and this
counter does not increase.
Trigger Point
This counter is measured when the message queue of I frames sent by the BTS L2 on the
OML overflows.
Formula
None.
5.10.14 Erroneously Received OML Long Frames by BTS Physical
Layer
Counter
L2143: Erroneously Received OML Long Frames by BTS Physical Layer.
Meaning
The L3 messages are sent through L2 to L1. Then L1 sends the messages in the form of
physical frames. If an error occurs when L1 receives a long frame, this frame is discarded, and
this counter increases by 1.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and this
counter does not increase.
Trigger Point
This counter is measured when the BTS L1 erroneously receives an OML long frame.
Formula
None.
5.10.15 OML Byte Errors Received by BTS Physical Layer
Counter
L2144: OML Byte Errors Received by BTS Physical Layer
Meaning
The L3 messages are sent through L2 to L1. Then L1 sends the messages in the form of
physical frames. If the received frame contains incorrect bytes, this frame is discarded, and
this counter increases by 1.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and this
counter does not increase.
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Trigger Point
This counter is measured when the BTS L1 receives frames containing byte errors.
Formula
None.
5.10.16 OML Discarded Series Received by BTS Physical Layer
Counter
L2145: OML Discarded Series Received by BTS Physical Layer
Meaning
The L3 messages are sent through L2 to L1. Then L1 sends the messages in the form of
physical frames. If the received frame contains the discarded series, the frame is discarded,
and this counter increases by 1.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and this
counter does not increase.
Trigger Point
This counter is measured when the BTS L1 receives frames containing discarded series.
Formula
None.
5.10.17 OML CRC Errors Received by BTS
Counter
L2146: OML CRC Errors Received by BTS
Meaning
The L3 messages are sent through L2 to L1. Then L1 sends the messages in the form of
physical frames. If L1 receives a frame containing CRC errors, the frame is discarded, and the
counter increases by 1.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and this
counter does not increase.
Trigger Point
This counter is measured when the BTS L1 receives a frame containing CRC errors.
Formula
None.
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5.10.18 L1 and L2 Overflows of BTS OML
Counter
L2147: L1 and L2 Overflows of BTS OML.
Meaning
The BTS receives physical frames through L1, and then puts them in the queue from L1 to L2.
If large amount of information is received within a short period of time, the message queue
overflows, messages are lost, and this item increases by 1.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and this
counter does not increase.
Trigger Point
This counter is measured when the message queue from BTS OML L1 to L2 overflows.
Formula
None.
5.10.19 Total OML Frames Received by BTS Physical Layer
Counter
L2148: Total OML Frames Received by BTS Physical Layer.
Meaning
The BTS receives the physical frames through layer 1 (L1) and then puts the physical frames
in the queue from L1 to L2.
This counter increases by 1 when L1 receives an OML frame.
If the physical uplink is disrupted, the measurement cannot be sent to the BSC and this
counter does not increase.
Trigger Point
This counter is measured when BTS L1 receives an OML frame.
Formula
None.
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5.11 RSL Measurement per TRX
5.11.1 Overview
RSL Measurement per TRX is used to measure the number of various frames sent between the
BSC and the BTS.
Table 5-13 lists counters of RSL Measurement per TRX.
Table 5-13 Counters of RSL Measurement per TRX
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Counter
Section
L4131: RSL Setup Requests Sent from BTS
5.11.2
L4132: RSL Setup Requests Received from BTS
5.11.3
L4133: BTS-Sent Rejects to the RSL Setup Requests Sent by BTS
5.11.4
L4134: BTS-Received Rejects to the RSL Setup Requests
5.11.5
L4135: RSL RNR Frames Sent by BTS
5.11.6
L4136: RSL RNR Frames Received by BTS
5.11.7
L4137: RSL I Frames Resent by BTS
5.11.8
L4138: RSL NRERR Received by BTS
5.11.9
L4139: RSL Layer 3 Requests Received by BTS
5.11.10
L4140: RSL I Frames Sent by BTS
5.11.11
L4141: RSL I Frames Received by BTS
5.11.12
L4142: Queue Overflows of RSL Messages Sent by BTS
5.11.13
L4143: Erroneously Received RSL Long Frames by BTS Physical Layer
5.11.14
L4144: RSL Octet Errors Received by BTS Physical Layer
5.11.15
L4145: RSL Discarded Sequences Received by BTS Physical Layer
5.11.16
L4146: RSL CRC Errors Received by BTS
5.11.17
L4147: L1 and L2 Overflows of BTS RSL
5.11.18
L4148: Total RSL Frames Received by BTS Physical Layer
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5.11.2 RSL Setup Requests Sent from BTS
Counter
L4131: RSL Setup Requests Sent from BTS.
Meaning
This counter measures the number of SABME frames that the BTS L2 sends on the RSL.
The SABME frame is sent to request for link setup.
During the startup and normal operation of the BSC, the BTS does not initiate link setup or
send the SABME frame to the BSC.
If the status of the RSL is abnormal (other than Multi_I), the BTS may send the SABME
frame to the BSC.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and this
counter does not increase.
Trigger Point
This counter is measured when the BTS L2 sends an SABME frame on the RSL.
Formula
None.
5.11.3 RSL Setup Requests Received from BTS
Counter
L4132: RSL Setup Requests Received from BTS.
Meaning
This counter measures the number of SABME frames that the BTS L2 receives on the RSL.
The SABME frame is sent to request for link setup.
After the BSC starts up, the link status is converted to multi-frame (Multi_I) setup through the
frame interaction between the L2 entities of the BSC and the BTS. During this procedure, the
Abis interface board sends the SABME frame to the BTS L2.
During normal operation, the BSC sends the SABME frame to request for link reestablishment if links are abnormal or the physical link between the BSC and the BTS is
disrupted.
Trigger Point
This counter is measured when the BTS L2 receives an SABME frame on the RSL.
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Formula
None.
5.11.4 BTS-Sent Rejects to the RSL Setup Requests Sent by BTS
Counter
L4133: BTS-Sent Rejects to the RSL Setup Requests Sent by BTS.
Meaning
This counter measures the number of REJ frames that the BTS L2 sends on the RSL.
The REJ frame is a monitoring frame, which means that the received I frame is rejected. The
REJ frame contains the serial number of the expected I frame.
I frames are numbered in sequence. The BTS L2 has records for sent and received I frames.
Normally, the value of this counter should be 0. If the BTS receives an I frame with an
unexpected number, it sends a REJ frame to the BTS, and this counter increases by 1.
For example, if the expected serial number of I frames is A, and the received number is B, the
BTS L2 sends a REJ frame to request for I frames with the serial number as A.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and this
counter does not increase.
Trigger Point
This counter is measured when the BTS L2 sends a REJ frame on the RSL.
Formula
None.
5.11.5 BTS-Received Rejects to the RSL Setup Requests
Counter
L4134: BTS-Received Rejects to the RSL Setup Requests.
Meaning
This counter measures the number of REJ frames that the BTS L2 receives on the RSL.
The REJ frame is a monitoring frame, which means that the received I frame is rejected. The
REJ frame contains the serial number of the expected I frame.
I frames are numbered in sequence. The Abis interface board has records for the sent and
received I frames.
Normally, the value of this counter should be 0. If the BTS receives an I frame with an
unexpected number, it sends a REJ frame to the BSC, and this counter increases by 1.
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If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and this
counter does not increase.
Trigger Point
This counter is measured when the BTS L2 receives a REJ frame on the RSL.
Formula
None.
5.11.6 RSL RNR Frames Sent by BTS
Counter
L4135: RSL RNR Frames Sent by BTS
Meaning
This counter measures the number of RNR frames that the BTS L2 sends on the RSL.
The RNR frame is a monitoring frame, which means that the local receiver is busy and is not
ready to receive the next I frame. The RNR frame contains the serial number of the expected I
frame. The peer end stops sending I frames on receiving RNR frames.
If the receiver of the BTS is busy, the BTS sends an RNR frame to the BSC. The BSC stops
sending I frames on receiving the RNR frame.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and this
counter does not increase.
Trigger Point
This counter is measured when the BTS L2 sends an RNR frame on the RSL.
Formula
None.
5.11.7 RSL RNR Frames Received by BTS
Counter
L4136: RSL RNR Frames Received by BTS
Meaning
This counter measures the number of RNR frames that the BTS L2 receives on the RSL.
The RNR frame is a monitoring frame, which means that the local receiver is busy and is not
ready to receive the next I frame. The RNR frame contains the serial number of the expected I
frame. The peer end stops sending I frames on receiving RNR frames.
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If the receiver of the BSC is busy, the BSC sends an RNR frame to the BTS. The BTS stops
sending I frames on receiving the RNR frame.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and this
counter does not increase.
Trigger Point
This counter is measured when the BTS L2 receives an RNR frame on the RSL.
Formula
None.
5.11.8 RSL I Frames Resent by BTS
Counter
L4137: RSL I Frames Resent by BTS.
Meaning
This counter measures the number of REJ frames that the BTS L2 resends on the RSL.
If the BTS receives a REJ frame from the BSC, it means that an error occurs when the BSC
receives I frames. Then the BTS resends this I frame and all the I frames with numbers bigger
than this number after the L2 receiver of the BSC is free.
This item increases by 1 when the BTS resends an I frame.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and this
counter does not increase.
Trigger Point
This counter is measured when the BTS L2 resends an I frame on the RSL.
Formula
None.
5.11.9 RSL NRERR Received by BTS
Counter
L4138: RSL NRERR Received by BTS.
Meaning
This counter measures the number of frames that the BTS L2 RSL receives whose numbers
are different from those of the to-be-sent frames.
The RR frames, RNR frames, REJ frames, and I frames sent from the BTS to the BSC contain
the numbers of the to-be-sent I frames. The BTS records the number range of the to-be-sent I
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frames. If the received I frame number is not within the range, this number is considered to be
incorrect, and this counter increases by 1.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and this
counter does not increase.
Trigger Point
This counter is measured when the BTS L2 receives RSL frames whose numbers are different
from those of the to-be-sent frames.
Formula
None.
5.11.10 RSL Layer 3 Requests Received by BTS
Counter
L4139: RSL Layer 3 Requests Received by BTS
Meaning
This counter measures the number of requests that are sent from BTS L3 to L2 and contain
the to-be-confirmed messages.
The requests sent from L3 consist of the messages that need or need not be confirmed. The
former are transferred in L2 I frames and the latter are transferred in L2 UI frames.
All the L3 messages except for the MRs sent by the BTS need be confirmed.
This counter increases by 1 when the BTS L2 receives a request containing the to-beconfirmed message from L3.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and this
counter does not increase.
Trigger Point
This counter is measured when the BTS L2 RSL receives a request containing the to-beconfirmed message from L3.
Formula
None.
5.11.11 RSL I Frames Sent by BTS
Counter
L4140: RSL I Frames Sent by BTS.
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Meaning
This counter measures the number of I frames sent by the BTS L2 on the RSL.
The requests sent from L3 consist of the messages that need or need not be confirmed. The
former are transferred in L2 I frames and the latter are transferred in L2 UI frames.
All the L3 messages except for the MRs sent by the BTS need be confirmed. This counter
increases by 1 when the BTS L2 sends an I frame on the RSL.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and this
counter does not increase.
Trigger Point
This counter is measured when the BTS L2 sends an I frame on the RSL.
Formula
None.
5.11.12 RSL I Frames Received by BTS
Counter
L4141: RSL I Frames Received by BTS.
Meaning
This counter measures the number of I frames the BTS L2 receives.
The requests sent from L3 consist of the messages that need or need not be confirmed. The
former are transferred in L2 I frames and the latter are transferred in L2 UI frames.
All the L3 messages sent by the BSC need be confirmed. This counter increases by 1 when
the BTS L2 receives an I frame.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and this
counter does not increase.
Trigger Point
This counter is measured when the BTS L2 receives an SABME frame on the RSL.
Formula
None.
5.11.13 Queue Overflows of RSL Messages Sent by BTS
Counter
L4142: Queue Overflows of RSL Messages Sent by BTS.
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Meaning
The requests sent from L3 consist of the messages that need or need not be confirmed. The
former are transferred in the L2 I frames and the latter re transferred in the L2 UI frames.
When the BTS L2 sends the to-be-confirmed messages through I frames, it puts the I frames
in a message queue and sends them in sequence.
If too many messages need be sent within a short period of time by L3, the message queue
overflows, messages are lost, and this counter increases by 1.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and this
counter does not increase.
Trigger Point
This counter is measured when the RSL message queue of I frames sent by the BTS L2
overflows.
Formula
None.
5.11.14 Erroneously Received RSL Long Frames by BTS Physical
Layer
Counter
L4143: Erroneously Received RSL Long Frames by BTS Physical Layer.
Meaning
The L3 messages are sent through L2 to L1. Then L1 sends the messages in the form of
physical frames. If an error occurs when L1 receives a long frame, this frame is discarded, and
this counter increases by 1.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and this
counter does not increase.
Trigger Point
This counter is measured when BTS L1 receives incorrect RSL long frames.
Formula
None.
5.11.15 RSL Octet Errors Received by BTS Physical Layer
Counter
L4144: RSL Octet Errors Received by BTS Physical Layer
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Meaning
The L3 messages are sent through L2 to L1. Then L1 sends the messages in the form of
physical frames. If the received frame contains incorrect bytes, this frame is discarded, and
this counter increases by 1.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and this
counter does not increase.
Trigger Point
This counter is measured when BTS L1 receives RSL frames containing byte errors.
Formula
None.
5.11.16 RSL Discarded Sequences Received by BTS Physical Layer
Counter
L4145: RSL Discarded Sequences Received by BTS Physical Layer
Meaning
The L3 messages are sent through L2 to L1. Then L1 sends the messages in the form of
physical frames. If the received frame contains the discarded series, the frame is discarded,
and this counter increases by 1.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and this
counter does not increase.
Trigger Point
This counter is measured when BTS L1 receives an RSL frame containing discarded series.
Formula
None.
5.11.17 RSL CRC Errors Received by BTS
Counter
L4146: RSL CRC Errors Received by BTS
Meaning
The L3 messages are sent through L2 to L1. Then L1 sends the messages in the form of
physical frames. If L1 receives a frame containing CRC errors, the frame is discarded, and
this counter increases by 1.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and this
counter does not increase.
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Trigger Point
This counter is measured when the BTS L1 receives the RSL CRC errors.
Formula
None.
5.11.18 L1 and L2 Overflows of BTS RSL
Counter
L4147: L1 and L2 Overflows of BTS RSL.
Meaning
The BTS receives the physical frames through layer 1 (L1) and then puts the physical frames
in the queue from L1 to L2.
This counter increases by 1 when L1 receives too many messages and the message queue
overflows.
If the physical uplink is disrupted, the measurement cannot be sent to the BSC and this
counter does not increase.
Trigger Point
This counter is measured when the message queue from BTS RSL L1 to L2 overflows.
Formula
None.
5.11.19 Total RSL Frames Received by BTS Physical Layer
Counter
L4148: Total RSL Frames Received by BTS Physical Layer.
Meaning
The BTS receives the physical frames through layer 1 (L1) and then puts the physical frames
in the queue from L1 to L2.
This counter increases by 1 when L1 receives an RSL frame.
If the physical uplink is disrupted, the measurement cannot be sent to the BSC and this
counter does not increase.
Trigger Point
This counter is measured when the BTS L1 receives an RSL frame.
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Formula
None.
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6 Resources Measurement
6
Resources Measurement
About This Chapter
The following table lists the sections of this chapter.
Section
Describes
6.1 Overview of Resources
Measurement
Introduces the functions and measurement units of
Resources Measurement.
6.2 A Interface Circuit
Measurement per DPC
Describes the functions and counters of A Interface
Circuit Measurement per DPC.
6.3 TC Measurement per DPC
Describes the functions and counters of TC Measurement
per DPC.
6.4 Pb Interface Circuit
Measurement per PCU
Describes the functions and counters of Pb Interface
Circuit Measurement per PCU.
6.5 Ater Interface Circuit
Measurement per BM Subrack
Describes the functions and counters of Ater Interface
Circuit Measurement per BM Subrack.
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6 Resources Measurement
6.1 Overview of Resources Measurement
Resources Measurement is used to measure the state of circuits on the A interface, Pb
interface, and Ater interface, and the TC resources.
Table 6-1 lists the measurement units of Resources Measurement.
Table 6-1 Measurement Units of Resources Measurement
Measurement Unit
Section
A Interface Circuit Measurement per DPC
6.2
TC Measurement per DPC
6.3
Pb Interface Circuit Measurement per PCU
6.4
Ater Interface Circuit Measurement per BM Subrack
6.5
DPC: Destination Signaling Point Code
BM: Base Module
BM subrack = GSM Main Processing Subrack (GMPS)/GSM Extended Processing Subrack (GEPS)
6.2 A Interface Circuit Measurement per DPC
6.2.1 Overview
A Interface Circuit Measurement per DPC is used to measure the circuits in a faulty, busy, idle,
uninstalled, and maintenance state.
Table 6-2 lists counters of A Interface Circuit Measurement per DPC.
Table 6-2 Counters of A Interface Circuit Measurement per DPC
6-2
Counter
Section
AL0050: Mean Number of Uninstalled Circuits on the A Interface
6.2.2
AL0051: Mean Number of Faulty Circuits on the A Interface
6.2.3
AL0052: Mean Number of Circuits in Maintenance State on the A Interface
6.2.4
AL0053: Mean Number of Blocked Circuits on the A Interface
6.2.5
AL0054: Mean Number of Idle Circuits on the A Interface
6.2.6
AL0055: Mean Number of Busy Circuits on the A Interface
6.2.7
AL0089: Mean Number of Circuits with Uninstalled Peer Circuits on the A
Interface
6.2.8
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6.2.2 Mean Number of Uninstalled Circuits on the A Interface
Counter
AL0050: Mean Number of Uninstalled Circuits on the A Interface.
Meaning
This counter measures the mean number of uninstalled circuits on the A interface.
Trigger Point
The BSC measures the number of uninstalled circuits on the A interface every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Uninstalled Circuits on the A Interface = [Sampling Number of Uninstalled
Circuits on the A Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
6.2.3 Mean Number of Faulty Circuits on the A Interface
Counter
AL0051: Mean Number of Faulty Circuits on the A Interface.
Meaning
This counter measures the mean number of faulty circuits on the A interface.
Trigger Point
The BSC measures the number of faulty circuits on the A interface every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Faulty Circuits on the A Interface = [Sampling Number of Faulty Circuits
on the A Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
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6.2.4 Mean Number of Circuits in Maintenance State on the A
Interface
Counter
AL0052: Mean Number of Circuits in Maintenance State on the A Interface.
Meaning
This counter measures the mean number of circuits in maintenance state on the A interface.
Trigger Point
The BSC measures the number of circuits in the maintenance state on the A interface every 10
s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Circuits in Maintenance State on the A Interface = [Sampling Number of
Circuits in Maintenance State on the A Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
6.2.5 Mean Number of Blocked Circuits on the A Interface
Counter
AL0053: Mean Number of Blocked Circuits on the A Interface.
Meaning
This counter measures the mean number of Blocked Circuits on the A Interface.
Trigger Point
The BSC measures the number of blocked circuits on the A interface every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Blocked Circuits on the A Interface = [Sampling Number of Blocked
Circuits on the A Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
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6 Resources Measurement
6.2.6 Mean Number of Idle Circuits on the A Interface
Counter
AL0054: Mean Number of Idle Circuits on the A Interface.
Meaning
This counter measures the mean number of idle circuits on the A interface.
Trigger Point
The BSC measures the number of idle circuits on the A interface every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Idle Circuits on the A Interface = [Sampling Number of Idle Circuits on the
A Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
6.2.7 Mean Number of Busy Circuits on the A Interface
Counter
AL0055: Mean Number of Busy Circuits on the A Interface.
Meaning
This counter measures the mean number of busy circuits on the A interface.
Trigger Point
The BSC measures the number of busy circuits on the A interface every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Busy Circuits on the A Interface = [Sampling Number of Busy Circuits on
the A Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
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6 Resources Measurement
6.2.8 Mean Number of Circuits with Uninstalled Peer Circuits on
the A Interface
Counter
AL0056: Mean Number of Circuits with Uninstalled Peer Circuits on the A Interface.
Meaning
This counter measures the mean number of circuits with uninstalled peer circuits on the A
interface.
Trigger Point
The BSC measures the number of circuits whose peer circuits are uninstalled on the A
interface every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Circuits with Uninstalled Peer Circuits on the A Interface = [Sampling
Number of A Circuits with Uninstalled Peer Circuits on the A Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
6.3 TC Measurement per DPC
6.3.1 Overview
TC Measurement per DPC is used to measure the faulty, idle, and busy TC Resources.
Table 6-3 lists the counters of TC Measurement per DPC.
Table 6-3 Counters of TC Measurement per DPC
6-6
Counter
Section
AR0751: Mean Number of Faulty TC Resources
6.3.2
AR0754: Mean Number of Idle TC Resources
6.3.3
AR0755: Mean Number of Busy TC Resources
6.3.4
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6.3.2 Mean Number of Faulty TC Resources
Counter
AR0751: Mean Number of Faulty Transcoders (TC Resources).
Meaning
This counter measures the mean number of faulty TC Resources.
Trigger Point
The BSC measures the number of faulty TC Resources every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Faulty TC Resources = [Sampling Number of Faulty TC
Resources]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
6.3.3 Mean Number of Idle TC Resources
Counter
AR0754: Mean Number of Idle TC Resources.
Meaning
This counter measures the mean number of idle TC Resources.
Trigger Point
The BSC measures the number of idle TC Resources every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Idle TC Resources = [Sampling Number of Idle TC Resources]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
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6 Resources Measurement
6.3.4 Mean Number of Busy TC Resources
Counter
AR0755: Mean Number of Busy TC Resources.
Meaning
This counter measures the mean number of busy TC Resources.
Trigger Point
The BSC measures the number of busy TC Resources every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Busy TC Resources = [Sampling Number of Busy TC
Resources]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
6.4 Pb Interface Circuit Measurement per PCU
6.4.1 Overview
Pb Interface Circuit Measurement per PCU is used to measure the faulty, and busy circuits,
and the circuits in the maintenance state.
Table 6-4 lists counters of Pb Interface Circuit Measurement per PCU.
Table 6-4 Counters of Pb Interface Circuit Measurement per PCU
6-8
Counter
Section
AL8351: Mean Number of Faulty Circuits on the Pb Interface
6.4.2
AL8353: Mean Number of Blocked Circuits on the Pb Interface
6.4.3
AL8354: Mean Number of Idle Circuits on the Pb Interface
6.4.4
AL8355: Mean Number of Busy Circuits on the Pb Interface
6.4.5
AL8352: Mean Number of Circuits in Maintenance State on the Pb Interface
6.4.6
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6.4.2 Mean Number of Faulty Circuits on the Pb Interface
Counter
AL8351: Mean Number of Faulty Circuits on the Pb Interface.
Meaning
This counter measures the mean number of faulty circuits on the Pb interface.
Trigger Point
The BSC measures the number of faulty circuits on the Pb interface every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Faulty Circuits on the Pb Interface = [Sampling Number of Faulty Circuits
on the Pb Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
6.4.3 Mean Number of Blocked Circuits on the Pb Interface
Counter
AL8353: Mean Number of Blocked Circuits on the Pb Interface.
Meaning
This counter measures the mean number of blocked circuits on the Pb interface.
Trigger Point
The BSC measures the number of blocked circuits on the Pb interface every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Blocked Circuits on the Pb Interface = [Sampling Number of Blocked
Circuits on the Pb Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
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6.4.4 Mean Number of Idle Circuits on the Pb Interface
Counter
AL8354: Mean Number of Idle Circuits on the Pb Interface.
Meaning
This counter measures the mean number of idle circuits on the Pb interface.
Trigger Point
The BSC measures the number of idle circuits on the Pb interface every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Idle Circuits on the Pb Interface = [Sampling Number of Idle Circuits on the
Pb Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
6.4.5 Mean Number of Busy Circuits on the Pb Interface
Counter
AL8355: Mean Number of Busy Circuits on the Pb Interface.
Meaning
This counter measures the mean number of busy circuits on the Pb interface.
Trigger Point
The BSC measures the number of busy circuits on the Pb interface every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Busy Circuits on the Pb Interface = [Sampling Number of Busy Circuits on
the Pb Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
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6 Resources Measurement
6.4.6 Mean Number of Circuits in Maintenance State on the Pb
Interface
Counter
AL8352: Mean Number of Circuits in Maintenance State on the Pb Interface.
Meaning
This counter measures the mean number of circuits in the maintenance state on the Pb
interface.
Trigger Point
The BSC measures the number of circuits in the maintenance state on the Pb interface every
10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Circuits in Maintenance State on the Pb Interface = [Sampling Number of
Circuits in Maintenance State on the Pb Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
6.5 Ater Interface Circuit Measurement per BM Subrack
6.5.1 Overview
Ater Interface Circuit Measurement per BM Subrack is used to measure the faulty, idle, and
busy circuits on the Ater interface.
Table 6-5 lists the counters of Ater Interface Circuit Measurement per BM Subrack.
Table 6-5 Counters of Ater Interface Circuit Measurement per BM Subrack
Counter
Section
AL1251: Mean Number of Faulty Circuits on the Ater Interface
6.5.2
AL1254: Mean Number of Idle Circuits on the Ater Interface
6.5.3
AL1255: Mean Number of Busy Circuits on the Ater Interface
6.5.4
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6.5.2 Mean Number of Faulty Circuits on the Ater Interface
Counter
AL1251: Mean Number of Faulty Circuits on the Ater Interface.
Meaning
This counter measures the mean number of faulty circuits on the Ater interface.
Trigger Point
The BSC measures the number of faulty circuits on the Ater interface every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Faulty Circuits on the Ater Interface = [Sampling Number of Faulty Circuits
on the Ater Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
6.5.3 Mean Number of Idle Circuits on the Ater Interface
Counter
AL1254: Mean Number of Idle Circuits on the Ater Interface.
Meaning
This counter measures the mean number of idle circuits on the Ater interface.
Trigger Point
The BSC measures the number of idle circuits on the Ater interface every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Idle Circuits on the Ater Interface = [Sampling Number of Idle Circuits on
the Ater Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
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6.5.4 Mean Number of Busy Circuits on the Ater Interface
Counter
AL1255: Mean Number of Busy Circuits on the Ater Interface.
Meaning
This counter measures the mean number of busy circuits on the Ater interface.
Trigger Point
The BSC measures the number of busy circuits on the Ater interface every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Busy Circuits on the Ater Interface = [Sampling Number of Busy Circuits
on the Ater Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
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7 MSC Measurement
7
MSC Measurement
About This Chapter
The following table lists the sections of this chapter.
Section
Describes
7.1 Overview of MSC
Measurement
Introduces the functions and measurement unit of MSC
Measurement.
7.2 MSC Measurement per
DPC
Describes the functions and counters of MSC
Measurement per DPC.
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7 MSC Measurement
7.1 Overview of MSC Measurement
MSC Measurement is used to measure the number of Number of MSC Resets and the number
of messages that the BSC receives from the MSC.
Table 7-1 lists the measurement unit of MSC Measurement.
Table 7-1 Measurement Unit of MSC Measurement
Measurement Unit
Section
MSC Measurement per DPC
7.2
7.2 MSC Measurement per DPC
7.2.1 Overview
MSC Measurement per DPC is used to measure the number of Number of MSC Resets and
the number of messages that the BSC receives from the MSC.
Table 7-2 lists the counters of MSC Measurement per DPC.
Table 7-2 Counters of MSC Measurement per DPC
Counter
Section
L0056A: Number of MSC Resets
7.2.2
L0056B: Number of Messages Received from MSC
7.2.3
7.2.2 Number of MSC Resets
Counter
L0056A: Number of MSC Resets.
Meaning
This counter measures the number of Number of MSC Resets.
Trigger Point
This counter increases by 1 when the BSC receives a reset message from the MSC.
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7 MSC Measurement
Formula
None.
7.2.3 Number of Messages Received from MSC
Counter
L0056B: Number of Messages Received from MSC.
Meaning
This counter measures the number of messages that the BSC receives from the MSC.
Trigger Point
This counter increases by 1 when the BSC receives messages from the MSC.
Formula
None.
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8 CBC Measurement
8
CBC Measurement
About This Chapter
The following table lists the sections of this chapter.
Section
Describes
8.1 Overview of CBC
Measurement
Introduces the CBC measurement and its measurement
units.
8.2 CBC Measurement per
BSC
Describes CBC measurement per BSC and its counters.
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8.1 Overview of CBC Measurement
Cell Broadcast Center (CBC) measurement refers to the measurement of the reception of cell
broadcast data and the response of the BSC to the data.
Table 8-1 lists the measurement unit of CBC measurement.
Table 8-1 Measurement unit of CBC measurement
Measurement Unit
Section
CBC Measurement per BSC
8.2
8.2 CBC Measurement per BSC
8.2.1 Overview
CBC Measurement is used to measure the reception of cell broadcast data and the response of
the BSC to the data.
Table 8-2 lists the counters of CBC Measurement.
Table 8-2 Counters of CBC Measurement
8-2
Counter
Section
L0457: WRITE-REPLACE Requests Received by BSC
8.2.2
L0458: KILL Requests Received by BSC
8.2.3
L0459: STATUS-CBCH-QUERY Requests Received by BSC
8.2.4
L0460: STATUS-MESSAGE-QUERY Requests Received by BSC
8.2.5
L0461: SET-DRX Requests Received by BSC
8.2.6
L0462: RESET Requests Received by BSC
8.2.7
L0463: REPORT Responses to WRITE-REPLACE Requests
8.2.8
L0464: REJECT Responses to WRITE-REPLACE Requests
8.2.9
L0465: REPORT Responses to KILL Requests
8.2.10
L0466: REJECT Responses to KILL Requests
8.2.11
L0467: REPORT Responses to STATUS-CBCH-QUERY Requests
8.2.12
L0468: REJECT Responses to STATUS-CBCH-QUERY Requests
8.2.13
L0469: REPORT Responses to STATUS-MESSAGE-QUERY Requests
8.2.14
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Counter
Section
L0470: REJECT Responses to STATUS-MESSAGE-QUERY Requests
8.2.15
L0471: REPORT Responses to SET-DRX Requests
8.2.16
L0472: REJECT Responses to SET-DRX Requests
8.2.17
L0473: RESTART-INDICATION Requests Sent from BSC
8.2.18
L0474: REJECT Responses to RESTART-INDICATION Requests
8.2.19
L0475: FAILURE-INDICATION Requests Sent from BSC
8.2.20
L0476: CBCH Loading Indications Received by BSC (Overflow)
8.2.21
L0477: CBCH Loading Indications Received by BSC (Underflow)
8.2.22
L0478: WRITE-REPLACE Requests (WRITE Requests) Received by BSC
8.2.23
L0479: REPORT Responses to WRITE-REPLACE Requests (WRITE
Requests)
8.2.24
L0480: REJECT Responses to WRITE-REPLACE Requests (WRITE
Requests)
8.2.25
L0481: WRITE-REPLACE Requests (REPLACE Requests) Received by BSC
8.2.26
L0482: REPORT Responses to WRITE-REPLACE Requests (REPLACE
Requests)
8.2.27
L0483: REJECT Responses to WRITE-REPLACE Requests (REPLACE
Requests)
8.2.28
AL0484: Mean Capacity of BSC Message Library
8.2.29
L0486: Disruptions of the BSC-CBC Connection
8.2.30
8.2.2 WRITE-REPLACE Requests Received by BSC
Counter
L0457: WRITE-REPLACE Requests Received by BSC
Meaning
This counter measures the number of times the BSC receives a WRITE-REPLACE request on
the BSC-CBC interface.
Trigger Point
This counter increases by one when the BSC receives a WRITE-REPLACE request from the
CBC.
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Formula
None.
8.2.3 KILL Requests Received by BSC
Counter
L0458: KILL Requests Received by BSC
Meaning
This counter is used to measure the number of times the BSC receives a KILL request on the
BSC-CBC interface.
Trigger Point
This counter increases by one when the BSC receives a KILL request from the CBC.
Formula
None.
8.2.4 STATUS-CBCH-QUERY Requests Received by BSC
Counter
L0459: STATUS-CBCH-QUERY Requests Received by BSC
Meaning
This counter is used to measure the number of times the BSC receives a STATUS-CBCHQUERY request on the BSC-CBC interface.
Trigger Point
This counter increases by one when the BSC receives a STATUS-CBCH-QUERY request
from the CBC.
Formula
None.
8.2.5 STATUS-MESSAGE-QUERY Requests Received by BSC
Counter
L0460: STATUS-MESSAGE-QUERY Requests Received by BSC
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Meaning
This counter is used to measure the number of times the BSC receives a STATUSMESSAGE-QUERY request on the BSC-CBC interface.
Trigger Point
This counter increases by one when the BSC receives a STATUS-MESSAGE-QUERY request
from the CBC.
Formula
None.
8.2.6 SET-DRX Requests Received by BSC
Counter
L0461: SET-DRX Requests Received by BSC
Meaning
This counter is used to measure the number of times the BSC receives a SET-DRX request on
the BSC-CBC interface.
Trigger Point
This counter increases by one when the BSC receives a SET-DRX request from the CBC.
Formula
None.
8.2.7 RESET Requests Received by BSC
Counter
L0462: RESET Requests Received by BSC
Meaning
This counter is used to measure the number of times the BSC receives a RESET request on
the BSC-CBC interface.
Trigger Point
This counter increases by one when the BSC receives a RESET request from the CBC.
Formula
None.
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8.2.8 REPORT Responses to WRITE-REPLACE Requests
Counter
L0463: REPORT Responses to WRITE-REPLACE Requests
Meaning
This counter is used to measure the number of REPORT responses to WRITE-REPLACE
requests from the BSC to the CBC.
After receiving a WRITE-REPLACE request on the BSC-CBC interface, the BSC sends a REPORT
response message or a REJECT response message to the CBC.
Trigger Point
This counter increases by one when the BSC sends the CBC a REPORT response to the
WRITE-REPLACE request.
Formula
None.
8.2.9 REJECT Responses to WRITE-REPLACE Requests
Counter
L0464: REJECT Responses to WRITE-REPLACE Requests
Meaning
This counter is used to measure the number of REJECT responses to WRITE-REPLACE
requests from the BSC to the CBC.
After receiving a WRITE-REPLACE request on the BSC-CBC interface, the BSC sends a REPORT
response message or a REJECT response message to the CBC.
Trigger Point
This counter increases by one when the BSC sends a REJECT response message to the CBC.
Formula
None.
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8 CBC Measurement
8.2.10 REPORT Responses to KILL Requests
Counter
L0465: REPORT Responses to KILL Requests
Meaning
This counter is used to measure the number of REPORT responses to KILL requests from the
BSC to the CBC.
After receiving a KILL request on the BSC-CBC interface, the BSC sends a REPORT response message
or a REJECT response message to the CBC.
Trigger Point
This counter increases by one when the BSC sends the CBC a REPORT response to the KILL
request.
Formula
None.
8.2.11 REJECT Responses to KILL Requests
Counter
L0466: REJECT Responses to KILL Requests
Meaning
This counter is used to measure the number of REJECT responses to KILL requests from BSC
to the CBC.
After receiving a KILL request on the BSC-CBC interface, the BSC sends a REPORT response message
or a REJECT response message to the CBC.
Trigger Point
This counter increases by one when the BSC sends the CBC a REJECT response to the KILL
request.
Formula
None.
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8.2.12 REPORT Responses to STATUS-CBCH-QUERY Requests
Counter
L0467: REPORT Responses to STATUS-CBCH-QUERY Requests
Meaning
This counter is used to measure the number of REPORT responses to STATUS-CBCHQUERY requests from the BSC to the CBC.
After receiving a STATUS-CBCH-QUERY request on the BSC-CBC interface, the BSC sends a
REPORT response message or a REJECT response message to the CBC.
Trigger Point
This counter increases by one when the BSC sends the CBC a REPORT response to the
STATUS-CBCH-QUERY request.
Formula
None.
8.2.13 REJECT Responses to STATUS-CBCH-QUERY Requests
Counter
L0468: REJECT Responses to STATUS-CBCH-QUERY Requests
Meaning
This counter is used to measure the number of REJECT responses to STATUS-CBCHQUERY requests from the BSC to the CBC.
After receiving a STATUS-CBCH-QUERY request on the BSC-CBC interface, the BSC sends a
REPORT response message or a REJECT response message to the CBC.
Trigger Point
This counter increases by one when the BSC sends the CBC a REJECT response to the
STATUS-CBCH-QUERY request.
Formula
None.
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8 CBC Measurement
8.2.14 REPORT Responses to STATUS-MESSAGE-QUERY
Requests
Counter
L0469: REPORT Responses to STATUS-MESSAGE-QUERY Requests
Meaning
This counter is used to measure the number of REPORT responses to STATUS-MESSAGEQUERY requests from the BSC to the CBC.
After receiving a STATUS-MESSAGE-QUERY query on the BSC-CBC interface, the BSC sends a
REPORT response message or a REJECT response message to the CBC.
Trigger Point
This counter increases by one when the BSC sends the CBC a REPORT response to the
STATUS-MESSAGE-QUERY request.
Formula
None.
8.2.15 REJECT Responses to STATUS-MESSAGE-QUERY
Requests
Counter
L0470: REJECT Responses to STATUS-MESSAGE-QUERY Requests
Meaning
This counter is used to measure the number of REJECT responses to STATUS-MESSAGEQUERY requests from the BSC to the CBC.
After receiving a STATUS-MESSAGE-QUERY query on the BSC-CBC interface, the BSC sends a
REPORT response message or a REJECT response message to the CBC.
Trigger Point
This counter increases by one when the BSC sends a REJECT response to the STATUSMESSAGE-QUERY request.
Formula
None.
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8.2.16 REPORT Responses to SET-DRX Requests
Counter
L0471: REPORT Responses to SET-DRX Requests
Meaning
This counter is used to measure the number of REPORT responses to SET-DRX requests from
the BSC to the CBC.
After receiving a SET-DRX request on the BSC-CBC interface, the BSC sends a REPORT response
message or a REJECT response message to the CBC.
Trigger Point
This counter increases by one when the BSC sends the CBC a REPORT response to the SETDRX request.
Formula
None.
8.2.17 REJECT Responses to SET-DRX Requests
Counter
L0472: REJECT Responses to SET-DRX Requests
Meaning
This counter is used to measure the number of REJECT responses to SET-DRX requests from
the BSC to the CBC.
After receiving a SET-DRX request on the BSC-CBC interface, the BSC sends a REPORT response
message or a REJECT response message to the CBC.
Trigger Point
This counter increases by one when the BSC sends the CBC a REJECT response to SET-DRX
request.
Formula
None.
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8.2.18 RESTART-INDICATION Requests Sent from BSC
Counter
L0473: RESTART-INDICATION Requests Sent from BSC
Meaning
This counter is used to measure the number of RESTART-INDICATION requests sent from
BSC to the CBC.
After receiving a RESET message on the BSC-CBC interface, the BSC sends a RESTARTINDICATION requests or a REJECT response message to the CBC.
Trigger Point
This counter increases by one when the BSC sends a RESTART-INDICATION request to the
CBC.
Formula
None.
8.2.19 REJECT Responses to RESTART-INDICATION Requests
Counter
L0474: REJECT Responses to RESTART-INDICATION Requests
Meaning
This counter is used to measure the number of REJECT responses to RESTARTINDICATION requests from the BSC to the CBC.
After receiving a RESET message on the BSC-CBC interface, the BSC sends a RESTARTINDICATION requests or a REJECT response message to the CBC.
Trigger Point
This counter increases by one when the BSC sends the CBC a REJECT response message to
the RESTART-INDICATION request.
Formula
None.
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8.2.20 FAILURE-INDICATION Requests Sent from BSC
Counter
L0475: FAILURE-INDICATION Requests Sent from BSC
Meaning
This counter is used to measure the number of FAILURE-INDICATION requests sent from
the BSC to the CBC.
Trigger Point
This counter increases by one when the BSC sends a FAILURE-INDICATION request to the
CBC.
Formula
None.
8.2.21 CBCH Loading Indications Received by BSC (Overflow)
Counter
L0476: CBCH Loading Indications Received by BSC (Overflow)
Meaning
This counter is used to measure the number of CBCH Loading Indication (overflow)
messages received by the BSC from the BTS.
Trigger Point
This counter increases by one when the BSC receives a CBCH Loading Indication (overflow)
message from the BTS.
Formula
None.
8.2.22 CBCH Loading Indications Received by BSC (Underflow)
Counter
L0477: CBCH Loading Indications Received by BSC (Underflow)
Meaning
This counter is used to measure the number of CBCH Loading Indication (underflow)
messages received by the BSC from the BTS.
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8 CBC Measurement
Trigger Point
This counter increases by one when the BSC receives a CBCH Loading Indication (underflow)
message from the BTS.
Formula
None.
8.2.23 WRITE-REPLACE Requests (WRITE Requests) Received by
BSC
Counter
L0478: WRITE-REPLACE Requests (WRITE Requests) Received by BSC
Meaning
This counter is used to measure the number of WRITE-REPLACE requests (WRITE requests)
received by the BSC.
Trigger Point
This counter increases by one when the BSC receives a WRITE-REPLACE request (WRITE
request).
Formula
None.
8.2.24 REPORT Responses to WRITE-REPLACE Requests
(WRITE Requests)
Counter
L0479: REPORT Responses to WRITE-REPLACE Requests (WRITE Requests)
Meaning
This counter is used to measure the number of REPORT responses to WRITE-REPLACE
requests (WRITE requests) from the BSC.
Trigger Point
This counter increases by one when the BSC sends a REPORT response message to the
WRITE-REPLACE request (WRITE request).
Formula
None.
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8.2.25 REJECT Responses to WRITE-REPLACE Requests (WRITE
Requests)
Counter
L0480: REJECT Responses to WRITE-REPLACE Requests (WRITE Requests)
Meaning
This counter is used to measure the number of REJECT responses to WRITE-REPLACE
requests (WRITE requests) from the BSC.
Trigger Point
This counter increases by one when the BSC sends a REJECT response to the WRITEREPLACE request (WRITE request).
Formula
None.
8.2.26 WRITE-REPLACE Requests (REPLACE Requests) Received
by BSC
Counter
L0481: WRITE-REPLACE Requests (REPLACE Requests) Received by BSC
Meaning
This counter is used to measure the number of WRITE-REPLACE requests (REPLACE
requests) received by the BSC.
Trigger Point
This counter increases by one when the BSC receives a WRITE-REPLACE request
(REPLACE request).
Formula
None.
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8.2.27 REPORT Responses to WRITE-REPLACE Requests
(REPLACE Requests)
Counter
L0482: REPORT Responses to WRITE-REPLACE Requests (REPLACE Requests)
Meaning
This counter is used to measure the number of REPORT responses to WRITE-REPLACE
requests (REPLACE requests) from the BSC.
Trigger Point
This counter increases by one when the BSC sends a REPORT response message to the
WRITE-REPLACE request (REPLACE request).
Formula
None.
8.2.28 REJECT Responses to WRITE-REPLACE Requests
(REPLACE Requests)
Counter
L0483: REJECT Responses to WRITE-REPLACE Requests (REPLACE Requests)
Meaning
This counter is used to measure the number of REJECT responses to WRITE-REPLACE
requests (REPLACE requests) from the BSC.
Trigger Point
This counter increases by one when the BSC sends a REJECT response message to the
WRITE-REPLACE request (REPLACE request).
Formula
None.
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8.2.29 Mean Capacity of BSC Message Library
Counter
AL0484: Mean Capacity of BSC Message Library
Meaning
This counter is used to measure the mean number of messages in the BSC message library.
Trigger Point
None.
Formula
Mean number of messages in the BSC message library =
Accumulated number of messages in the BSC message library/Number of samplings of
messages in the BSC message library
8.2.30 Disruptions of the BSC-CBC Connection
Counter
L0486: Disruptions of the BSC-CBC Connection
Meaning
This counter is used to measure the number of times the connection between the BSC and the
CBC disrupts.
Trigger Point
This counter increases by one when the connection between the BSC and the CBC disrupts.
Formula
None.
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9 PCU Measurement
9
PCU Measurement
About This Chapter
The following table lists the sections of this chapter.
Section
Describes
9.1 Overview of PCU
Measurement
Introduces the functions and measurement units of PCU
Measurement.
9.2 PCU Measurement per
BSC
Describes the functions and counters of PCU
Measurement per BSC.
9.3 PCU Measurement per
PCU
Describes the functions and counters of PCU
Measurement per PCU.
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9.1 Overview of PCU Measurement
PCU Measurement is used to measure the number of messages that the BSC receives from the
PCU.
Table 9-1 lists the measurement units of PCU Measurement.
Table 9-1 Measurement units of PCU Measurement
Measurement Unit
Section
PCU Measurement per BSC
9.2
PCU Measurement per PCU
9.3
9.2 PCU Measurement per BSC
9.2.1 Overview
PCU Measurement per BSC is used to measure the number of messages that the BSC receives
from the PCU.
Table 9-2 lists the counters of PCU Measurement per BSC.
Table 9-2 Counters of PCU Measurement per BSC
Counter
Section
L0387: Total Messages Received from PCU
9.2.2
9.2.2 Total Messages Received from PCU
Counter
L0387: L0387: Total Messages Received from PCU.
Meaning
This counter measures the number of messages that the BSC receives from all the PCUs.
Trigger Point
This counter increases by 1 when the BSC receives a message from the PCU.
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Formula
None.
9.3 PCU Measurement per PCU
9.3.1 Overview
PCU Measurement per PCU is used to measure the number of messages that the BSC receives
from one PCU.
Table 9-3 lists the counter of PCU Measurement per PCU.
Table 9-3 Counter of PCU Measurement per PCU
Counter
Section
L8387: Messages Received from a PCU
9.3.2
9.3.2 Messages Received from a PCU
Counter
L8387: Messages Received from one PCU.
Meaning
This counter measures the number of messages that the BSC receives from one PCU.
Trigger Point
This counter increases by 1 when the BSC receives a message from a PCU.
Formula
None.
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10 Paging Measurement
10
Paging Measurement
About This Chapter
The following table lists the sections of this chapter.
Section
Describes
10.1 Overview of Paging
Measurement
Introduces the measurement units of Paging
Measurement.
10.2 A Interface Paging
Measurement
Describes the functions and counters of Measurement of
the Paging on the A Interface per BSC.
10.3 Abis Interface Paging
Measurement
Describes the functions and counters of Measurement of
the Paging on the Abis Interface per Cell.
10.4 Measurement of
Discarded Paging Messages
due to Overload per LAPD
Describes the functions and counters of Measurement of
Discarded Paging Messages due to Overload per LAPD.
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10.1 Overview of Paging Measurement
Paging Measurement refers to the measurement of the number of paging messages on the A
interface and Abis interface.
Table 10-1 lists the measurement units of Paging Measurement.
Table 10-1 Measurement units of Paging Measurement
Measurement Unit
Section
A Interface Paging Measurement
10.2
Abis Interface Paging Measurement
10.3
Measurement of Discarded Paging Messages due to Overload per LAPD
10.4
10.2 A Interface Paging Measurement
10.2.1 Overview of A Interface Paging Measurement
Measurement of the Paging on the A Interface per BSC refers to the measurement of the
number of paging messages from the core network.
The paging messages from the core network have two types, the circuit service (CS) pagings,
and the packet service (PS) pagings. The CS pagings are sent from the MSC to the BSC on
the A interface, and the PS pagings are sent from the SGSN to the BSC through the SGSN on
the Gb interface (The pagings can be sent directly to the BSC when the BSC has a built-in
PCU). The CS pagings can be sent to the BSC through the SGSN and the PCU when the Gs
interface (interface between the MSC and the SGSN) is available.
Table 10-2 lists the counters of Measurement of the Paging on the A Interface per BSC
Table 10-2 Counters of Measurement of the Paging on the A Interface per BSC
10-2
Number
Counter
1
A0300: MSC-Initiated Paging Requests for CS Service
2
A0301: SGSN-Initiated Paging Requests for CS Service
3
A031: SGSN-Initiated Paging Requests for PS Service
4
A032: Delivered to BTS for CS Service
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10.2.2 MSC-Initiated Paging Requests for CS Service
Counter
A0300: MSC-Initiated Paging Requests for CS Service
Meaning
This counter measures the number of CS paging requests sent from the MSC to the BSC. The
CS paging requests are sent directly from the MSC to the BSC, and the BSC measures this
counter after receiving such a paging request.
Trigger Point
This counter is measured when the BSC receives an MSC-initiated paging request, as shown
in Figure 10-1.
Figure 10-1 MSC-initiated paging procedure for CS service
MS
MSC
BSC
BTS
PAGING
A
PAGING CMD
PAGING REQ
CHAN REQ
CHAN RED
Formula
None.
10.2.3 SGSN-Initiated Paging Requests for CS Service
Counter
A0301: SGSN-Initiated Paging Requests for CS Service.
Meaning
This counter measures the number of CS paging requests sent from the SGSN to the BSC.
The CS paging requests are sent from the SGSN to the BSC through the PCU. The BSC
measures this counter after receiving such a paging request.
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Trigger Point
This counter is measured when the BSC receives the PAGING (CS) message from the PCU or
the SGSN, as shown in Figure 10-2.
Figure 10-2 SGSN-initiated paging procedure for CS service
MS
BTS
BSC
PCU/SGSN
PAGING(CS)
A
PAGING CMD
PAGING REQ
CHAN REQ
CHAN RQD
CHAN REQ
Formula
None.
This counter takes effect only when the Gs interface (interface between the MSC and the SGSN) is
available.
10.2.4 SGSN-Initiated Paging Requests for PS Service
Counter
A031: SGSN-Initiated Paging Requests for PS Service
Meaning
This counter measures the number of PS paging requests sent from the SGSN to the BSC. The
PS paging requests are sent from the SGSN to the BSC through the PCU. The BSC measures
this counter after receiving such a paging request.
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Trigger Point
This counter is measured when the BSC receives the PAGING (PS) message from the PCU or
the SGSN, as shown in Figure 10-3.
Figure 10-3 SGSN-initiated paging procedure for PS service
MS
BTS
BSC
PCU
SGSN
PAGING（PS）
A
PAGING REQ
PAGING CMD
PAGING REQ
PAGING REQ
CHAN REQ
CHAN RQD
CHAN REQ
Formula
None.
10.2.5 Delivered to BTS for CS Service
Counter
A032: Delivered to BTS for CS Service
Meaning
This counter measures the number of paging requests delivered from the BSC to the BTS. You
can judge whether the paging messages are lost with the reference of A0300: MSC-Initiated
Paging Requests for CS Service.
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Trigger Point
This counter is measured when the BSC delivers a paging request to the BTS, as shown in
Figure 10-4.
Figure 10-4 BSC-delivered CS paging procedure
MS
MSC
BSC
BTS
PAGING
PAGING CMD
PAGING REQ
A
CHAN REQ
CHAN RQD
Formula
None.
10.3 Abis Interface Paging Measurement
10.3.1 Overview of Abis Interface Paging Measurement
Measurement of the Paging on the Abis Interface per Cell refers to the measurement of the
number of PS and CS pagings that the BSC sends to the BTS on the Abis interface.
Table 10-3 lists the counters of Measurement of the Paging on the Abis Interface per Cell.
Table 10-3 Counters of Measurement of the Paging on the Abis Interface per Cell
Number
Counter
1
A330: Delivered Paging Messages for CS Service
2
A331: Delivered Paging Messages for PS Service
10.3.2 Delivered Paging Messages for CS Service
Counter
A330: Delivered Paging Messages for CS Service
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Meaning
The BSC delivers the PAGING CMD message based on the cell identity after it receives the
PAGING message from the MSC or the PCU, and this counter is measured.
Trigger Point
This counter is measured when the BSC delivers a PAGING CMD to the BTS, as shown in
Figure 10-5.
Figure 10-5 CS paging procedure
MS
BTS
BSC
SGSN
PCU
MSC
PAGING
PAGING
PAGING REQ
PAGING REQ
PAGING CMD
PAGING REQ
A
Formula
None.
10.3.3 Delivered Paging Messages for PS Service
Counter
A331: Delivered Paging Messages for PS Service.
Meaning
The SGSN delivers the PAGING REQ message to the PCU. The PCU processes the message
and then sends the PACKET PAGING message to the BSC. The BSC delivers the PS
PAGING CMD to related cells based on the cell identity in the PACKET PAGING message
and this counter is measured.
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Trigger Point
This counter is measured when the BSC delivers a PS PAGING CMD message to the BTS, as
shown in Figure 10-6.
Figure 10-6 PS paging procedure
MS
BTS
BSC
SGSN
PCU
PAGING REQ
PAGING
PS PAGING CMD
A
PAGING REQ
Formula
None.
10.4 Measurement of Discarded Paging Messages due to
Overload per LAPD
10.4.1 Overview of Measurement of Discarded Paging Messages
due to Overload per LAPD
Measurement of Discarded Paging Messages due to Overload per LAPD refers to the
measurement of the discarded number of CS and PS pagings on the LAPD link due to
overload of the system.
Table 10-4 lists the counters of Measurement of Discarded Paging Messages due to Overload
per LAPD.
Table 10-4 Counters of Measurement of Discarded Paging Messages due to Overload per LAPD
10-8
Number
Counter
1
A530: SM Pagings Discarded on LAPD Link
2
A531: CS Pagings Discarded on LAPD Link
3
A532: PS Pagings Discarded on LAPD Link
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10.4.2 SM Pagings Discarded on LAPD Link
Counter
A530: SM Pagings Discarded on LAPD Link
Meaning
This counter measures the number of discarded short message (SM) pagings on the LAPD.
Trigger Point
This counter is measured when an SM paging is discarded on the LAPD link due to overload
of the GEIUB/GOIUB overload or the LAPD link.
Formula
None.
10.4.3 CS Pagings Discarded on LAPD Link
Counter
A531: CS Pagings Discarded on LAPD Link
Meaning
This counter measures the number of discarded CS pagings on the LAPD link.
Trigger Point
This counter is measured when a CS paging is discarded on the LAPD link due to overload of
the GEIUB/GOIUB or the LAPD link.
Formula
None.
10.4.4 PS Pagings Discarded on LAPD Link
Counter
A532: PS Pagings Discarded on LAPD Link
Meaning
This counter measures the number of discarded PS pagings on the LAPD link.
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Trigger Point
This counter is measured when a PS paging is discarded on the LAPD link due to overload of
the GEIUB/GOIUB or the LAPD link.
Formula
None.
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11 Call Measurement
11
Call Measurement
About This Chapter
The following table lists the sections of this chapter.
Section
Describes
11.1 Overview of Call
Measurement
Introduces the call measurement and its measurement
units.
11.2 Call Duration
Measurement per BSC
Describes Call Duration Measurement per BSC and its
counters.
11.3 Flow Control
Measurement per Cell
Describes Flow Control Measurement per Cell and its
counters.
11.4 Short Message
Measurement per Cell
Describes Short Message Measurement per Cell and its
counters.
11.5 Call Drop Measurement
per Cell
Describes Call Drop Measurement per Cell and its
counters.
11.6 Channel Activation
Measurement per Cell
Describes Channel Activation Measurement per Cell and
its counters.
11.7 Channel Seizure
Measurement per TRX
Describes Channel Seizure Measurement per TRX and its
counters.
11.8 Immediate Assignment
Measurement per Cell
Describes Immediate Assignment Measurement per Cell
and its counters.
11.9 Assignment
Measurement per Cell
Describes Assignment Measurement per Cell and its
counters.
11.10 Intra-Cell Handover
Measurement per Cell
Describes Intra-Cell Handover Measurement per Cell and
its counters.
11.11 Incoming Internal InterCell Handover Measurement
per Cell
Describes Incoming Internal Inter-Cell Handover
Measurement per Cell and its counters.
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11-2
Section
Describes
11.12 Outgoing Internal InterCell Handover Measurement
per Cell
Describes Outgoing Internal Inter-Cell Handover
Measurement per Cell and its counters.
11.13 Incoming External InterCell Handover Measurement
per Cell
Describes Incoming External Inter-Cell Handover
Measurement per Cell and its counters.
11.14 Outgoing External InterCell Handover Measurement
per Cell
Describes Outgoing External Inter-Cell Handover
Measurement per Cell and its counters.
11.15 Incoming Inter-RAT
Inter-Cell Handover
Measurement per Cell
Describes Incoming Inter-RAT Inter-Cell Handover
Measurement per Cell and its counters.
11.16 Outgoing Inter-RAT
Inter-Cell Handover
Measurement per Cell
Describes Outgoing Inter-RAT Inter-Cell Handover
Measurement per Cell and its counters.
11.17 GSM Cell to GSM Cell
Incoming Handover
Measurement
Describes GSM Cell to GSM Cell Incoming Handover
Measurement and its counters.
11.18 GSM Cell to GSM Cell
Outgoing Handover
Measurement
Describes GSM Cell to GSM Cell Outgoing Handover
Measurement and its counters.
11.19 Measurement of MRs
upon Handover Initiation per
Cell
Describes Measurement of MRs upon Handover Initiation
per Cell and its counters.
11.20 KPI Measurement per
Cell
Describes KPI Measurement per Cell and its counters.
11.21 Calls Discarded due to
Overload per LAPD
Describes Calls Discarded due to Overload per LAPD
and its counters.
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11 Call Measurement
11.1 Overview of Call Measurement
Call measurement refers to the measurement of the call services in the BSC.
Table 11-1 lists the measurement units of call measurement.
Table 11-1 Measurement units of call measurement
Measurement Unit
Section
Call Duration Measurement per BSC
11.2
Flow Control Measurement per Cell
11.3
Short Message Measurement per Cell
11.4
Call Drop Measurement per Cell
11.5
Channel Activation Measurement per Cell
11.6
Channel Seizure Measurement per TRX
11.7
Immediate Assignment Measurement per Cell
11.8
Assignment Measurement per Cell
11.9
Intra-Cell Handover Measurement per Cell
11.10
Incoming Internal Inter-Cell Handover Measurement per Cell
11.11
Outgoing Internal Inter-Cell Handover Measurement per Cell
11.12
Incoming External Inter-Cell Handover Measurement per Cell
11.13
Outgoing External Inter-Cell Handover Measurement per Cell
11.14
Incoming Inter-RAT Inter-Cell Handover Measurement per Cell
11.15
Outgoing Inter-RAT Inter-Cell Handover Measurement per Cell
11.16
GSM Cell to GSM Cell Incoming Handover Measurement
11.17
GSM Cell to GSM Cell Outgoing Handover Measurement
11.18
Measurement of MRs upon Handover Initiation per Cell
11.19
KPI Measurement per Cell
11.20
Calls Discarded due to Overload per LAPD
11.21
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11.2 Call Duration Measurement per BSC
11.2.1 Overview
Call Duration Measurement per BSC is used to measure the access duration and establishment
duration of all the calls in the BSC.
Table 11-2 lists the counters of Call Duration Measurement per BSC.
Table 11-2 Counters of Call Duration Measurement per BSC
Number
Counter
1
AA032: Mean Duration of Call Access
2
AA033: Mean Duration of Call Establishment
11.2.2 Mean Duration of Call Access
Counter
AA032: Mean Duration of Call Access
Meaning
This counter measures the mean duration of call access in a Granularity Period (GP).
Trigger Point
None.
Formula
Mean Duration of Call Access = [Total Duration of Call Access]/[Sampled Duration of Call
Access]
GP unit: 100 milliseconds
11.2.3 Mean Duration of Call Establishment
Counter
AA033: Mean Duration of Call Establishment
Meaning
This counter measures the mean duration of call establishment in a GP.
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Trigger Point
None.
Formula
Mean Duration of Call Establishment = [Total Duration of Call Establishment]/[Sampled
Duration of Call Establishment]
GP unit: 100 milliseconds
11.3 Flow Control Measurement per Cell
11.3.1 Overview
Flow Control Measurement per Cell is used to measure the resource utilization of a cell or a
BTS.
Table 11-3 lists the counters of Flow Control Measurement per Cell.
Table 11-3 Counters of Flow Control Measurement per Cell
Number
Counter
1
L3188A: MSG DEL IND Messages Sent on Abis Interface
2
L3188B: MSG CCCH LOAD IND (RACH) Messages Sent on Abis Interface
3
L3188C: MSG CCCH LOAD IND (PCH) Messages Sent on Abis Interface
4
L3188D: PACKET CCCH LOAD IND Messages Sent on Abis Interface
5
L3188E: MSG ABIS OVERLOAD (CCCH OVERLOAD) Messages Sent on
Abis Interface
6
L3188F: MSG ABIS OVERLOAD (PROCESSOR OVERLOAD) Messages
Sent on Abis Interface
7
L3188G: LOAD IND Messages Sent on the A-Interface
8
L3188H: Increases of Flow Control Levels
9
L3188I: Decreases of Flow Control Levels
10
L3188J: Ignored Trigger Events
11
L3188K: Highest Level Delays
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11.3.2 MSG DEL IND Messages Sent on Abis Interface
Counter
L3188A: MSG DEL IND Messages Sent on Abis Interface
Meaning
When an IMM ASS CMD message is deleted because of downlink CCCH overload in a cell,
the BTS sends an MSG DEL IND message. This counter measures the number of times the
BTS sends the MSG DEL IND messages about a cell in a GP.
Trigger Point
The measurement is triggered when the BSC receives an MSG DEL IND message from the
BTS.
Formula
None.
11.3.3 MSG CCCH LOAD IND (RACH) Messages Sent on Abis
Interface
Counter
L3188B: MSG CCCH LOAD IND (RACH) Messages Sent on Abis Interface
Meaning
When the uplink CCCH (RACH) in a cell is overloaded, the BTS sends an MSG CCCH
LOAD IND (RACH) message to the BSC.
Huawei BSS does not support the RACH overload of packet services. The RACH overload caused by
the calls of packet services is also regarded as the RACH overload of circuit services.
Trigger Point
The measurement is triggered when the BSC receives an MSG CCCH LOAD IND (RACH)
message from the BTS. The cause carried in this message is uplink CCCH (RACH) overload.
Formula
None.
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11.3.4 MSG CCCH LOAD IND (PCH) Messages Sent on Abis
Interface
Counter
L3188C: MSG CCCH LOAD IND (PCH) Messages Sent on Abis Interface
Meaning
The BTS saves the downlink CCCH (PCH) messages received from the BSC and the PCU
into different receive buffer queues. When the length of the queue exceeds the specified
threshold, the downlink CCCH is overloaded. The BTS can report overload to the BSC and
identify whether the overload is caused by excessive downlink packet services or by excessive
downlink circuit services. If the overload is caused by excessive downlink circuit services, the
BTS sends a CCCH LOAD IND message to the BSC and the BSC forwards it to the PCU.
Trigger Point
The measurement is triggered when the BSC receives from the BTS an MSG CCCH LOAD
IND (PCH) message. The cause carried in this message is downlink CCCH (PCH) overload of
circuit services.
Formula
None.
11.3.5 PACKET CCCH LOAD IND Messages Sent on Abis
Interface
Counter
L3188D: PACKET CCCH LOAD IND Messages Sent on Abis Interface
Meaning
This counter measures the number of times the BSC receives a PACKET CCCH LOAD IND
message from a cell in a GP, that is, the number of times the BTS receives from the BSC and
PCU a downlink CCCH (PCH) message. When the CCCH of packet services is overloaded,
the BTS sends a PACKET CCCH LOAD IND message to the BSC and the BSC forwards it to
the PCU.
Trigger Point
The measurement is triggered when the BSC receives a PACKET CCCH LOAD IND
message from the BTS.
Formula
None.
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11.3.6 MSG ABIS OVERLOAD (CCCH OVERLOAD) Messages
Sent on Abis Interface
Counter
L3188E: MSG ABIS OVERLOAD (CCCH OVERLOAD) Messages Sent on Abis Interface
Meaning
This counter measures the number of times the BSC receives an MSG ABIS OVERLOAD
(CCCH OVERLOAD) message from a cell in a GP. When the BTS sends an MSG ABIS
OVERLOAD (CCCH OVERLOAD) message to the BSC, it also sends the BSC a CCCH
LOAD INDICATION message.
TRX overload reports (CCCH overload) = CCCH load reports (RACH overload) + CCCH load reports
(PCH overload) (circuit service and packet service).
In actual situations, this equation may not exist due to bit errors.
Trigger Point
The measurement is triggered when the BSC receives an MSG ABIS OVERLOAD (CCCH
OVERLOAD) message from the BTS.
Formula
None.
11.3.7 MSG ABIS OVERLOAD (PROCESSOR OVERLOAD)
Messages Sent on Abis Interface
Counter
L3188F: MSG ABIS OVERLOAD (PROCESSOR OVERLOAD) Messages Sent on Abis
Interface
Meaning
This counter measures the number of times the BSC receives an MSG ABIS OVERLOAD
(PROCESSOR OVERLOAD) message from a cell in a GP. Processor overload means that the
CPU load of the TRX processor in a cell exceeds the threshold. This counter is not directly
related to CCCH overload.
Trigger Point
The measurement is triggered when the BSC receives an MSG ABIS OVERLOAD
(PROCESSOR OVERLOAD) message from the BTS.
Formula
None.
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11.3.8 LOAD IND Messages Sent on the A-Interface
Counter
L3188G: LOAD IND Messages Sent on the A-Interface
Meaning
If a cell has no TCHs available but the cell has external neighbor cells, the BSC sends the
MSC a LOAD IND message to avoid the handover of the call from the external neighbor cell
to this cell. The MSC then forwards this message to the BSS where the external neighbor cell
is located. Therefore, the BSS will not select congested cells as candidate cells for handovers.
The BSC checks the number of idle TCHs every five seconds.
Trigger Point
The measurement is triggered when the BSC sends a LOAD IND message to the MSC.
Formula
None.
11.3.9 Increases of Flow Control Levels
Counter
L3188H: Increases of Flow Control Levels
Meaning
Cell flow control is performed through double timers. When a trigger event occurs, the event
is ignored if T1 is running. If T1 is not running, the flow control level increases by one unless
the flow control has already reached the highest level. T1 and T2 (T2 > T1) are triggered. If
T2 expires, the flow control level decreases by one. If the flow control level is not zero after
the decrease, T2 is triggered again.
This counter measures the number of times the trigger event occurs when T1 stops and the
flow control has not reached the highest level.
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The description of the double timers is as follows:
When the event that can trigger AGCH flow control occurs, the cell flow control timer is triggered if
neither T1 nor T2 is running. The timer length is T1. The status of the timer is changed to T1 running.
z
If the flow control does not reach the highest level (level 5), the AGCH flow control level increases
by one and the number of times the flow control level increases is measured.
z
If the flow control level has reached the highest level, the Highest Level Delays counter is measured.
If the flow control timer is in T1 running status, the event is ignored and the times the trigger event is
ignored is measured.
If the flow control timer in T1 running status expires, the timer is triggered again and the timer length is
T2-T1. The status of the flow control timer is changed to T1 stopped and T2 running status.
In T1 stopped and T2 running status, if the event that can trigger AGCH flow control occurs, the cell
flow control timer is triggered again. The timer length is T1. The status of the flow control timer is
changed to T1 running. If the timer expires, the flow control level decreases by one and the number of
times the flow control level decreases is measured.
z
If the flow control level is not zero after the decrease, the cell flow control timer is triggered again.
The timer length is T2. The status of the flow control timer remains the same.
z
If the flow control level becomes zero after the decrease, the status of the flow control timer is
changed to T1 and T2 stopped.
Trigger Point
The BSC detects that all the SDCCHs are busy when sending an IMM ASS REJ message. The
measurement is triggered if T1 stops and the flow control has not reached the highest level.
Formula
None.
11.3.10 Decreases of Flow Control Levels
Counter
L3188I: Decreases of Flow Control Levels
Meaning
Cell flow control is performed through double timers. When a trigger event occurs, the event
is ignored if T1 is running. If T1 is not running, the flow control level increases by one unless
the flow control has already reached the highest level. T1 and T2 (T2 > T1) are triggered. If
T2 expires, the flow control level decreases by one. If the flow control level is not zero after
the decrease, T2 is triggered again. The number of the times the flow control level decreases
is the number of the times T2 expires.
This counter measures the number of times the flow control level decreases.
Trigger Point
The measurement is triggered when T2 expires.
Formula
None.
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11.3.11 Ignored Trigger Events
Counter
L3188J: Ignored Trigger Events
Meaning
Cell flow control is performed through double timers. When a trigger event occurs, the event
is ignored if T1 is running. If T1 is not running, the flow control level increases by one unless
the flow control has already reached the highest level. T1 and T2 (T2 > T1) are triggered. If
T2 expires, the flow control level decreases by one. If the flow control level is not zero after
the decrease, T2 is triggered again.
This counter measures the number of times trigger events occur when T1 is running.
Trigger Point
The measurement is triggered when T1 is running.
Formula
None.
11.3.12 Highest Level Delays
Counter
L3188K: Highest Level Delays
Meaning
Cell flow control is performed through double timers. When a trigger event occurs, the event
is ignored if T1 is running. If T1 is not running, the flow control level increases by one unless
the flow control has already reached the highest level. T1 and T2 (T2 > T1) are triggered. If
T2 expires, the flow control level decreases by one. If the flow control level is not zero after
the decrease, T2 is triggered again.
This counter measures the number of times the trigger event occurs when T2 is running and
the flow control has reached the highest level.
Trigger Point
The BSC detects that all the SDCCHs are busy when sending an IMM ASS REJ message. The
measurement is triggered if the flow control has reached the highest level.
Formula
None.
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11.4 Short Message Measurement per Cell
11.4.1 Overview
Short Message Measurement per Cell is used to measure the transmission and reception of
short messages in a cell.
Table 11-4 lists the counters of Short Message Measurement per Cell.
Table 11-4 Counters of Short Message Measurement per Cell
Number
Counter
1
A3340A: Uplink Point-to-Point Short Messages on SDCCH
2
A3340B: Downlink Point-to-Point Short Messages on SDCCH
3
A3349A: Uplink Point-to-Point Short Messages on TCH
4
A3349B: Downlink Point-to-Point Short Messages on TCH
5
CA334A: Total Uplink Point-to-Point Short Messages
6
CA334B: Total Downlink Point-to-Point Short Messages
7
CA3340: Point-to-Point Short Messages on SDCCH
8
CA3349: Point-to-Point Short Messages on TCH
11.4.2 Uplink Point-to-Point Short Messages on SDCCH
Counter
A3340A: Uplink Point-to-Point Short Messages on SDCCH
Meaning
This counter measures the number of uplink point-to-point short messages on the SDCCH.
Uplink short messages are sent from the MS to the BSC.
Trigger Point
The measurement is triggered when the BSC receives an uplink point-to-point short message
on the SDCCH.
Formula
None.
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11.4.3 Downlink Point-to-Point Short Messages on SDCCH
Counter
A3340B: Downlink Point-to-Point Short Messages on SDCCH
Meaning
This counter measures the number of downlink point-to-point short messages on the SDCCH.
Downlink short messages are sent from the BSC to the MS.
Trigger Point
The measurement is triggered when the BSC sends a downlink point-to-point short message
on the SDCCH.
Formula
None.
11.4.4 Uplink Point-to-Point Short Messages on TCH
Counter
A3349A: Uplink Point-to-Point Short Messages on TCH
Meaning
This counter measures the number of uplink point-to-point short messages on the TCH.
Trigger Point
The measurement is triggered when the BSC receives an uplink point-to-point short message
on the TCH.
Formula
None.
11.4.5 Downlink Point-to-Point Short Messages on TCH
Counter
A3349B: Downlink Point-to-Point Short Messages on TCH
Meaning
This counter measures the number of downlink point-to-point short messages on the TCH.
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Trigger Point
The measurement is triggered when the BSC sends a downlink point-to-point short message
on the TCH.
Formula
None.
11.4.6 Total Uplink Point-to-Point Short Messages
Counter
CA334A: Total Uplink Point-to-Point Short Messages
Meaning
This counter measures the total number of uplink point-to-point short messages.
Trigger Point
None.
Formula
Total Uplink Point-to-Point Short Messages = [Uplink Point-to-Point Short Messages on
SDCCH] + [Uplink Point-to-Point Short Messages on TCH]
11.4.7 Total Downlink Point-to-Point Short Messages
Counter
CA334B: Total Downlink Point-to-Point Short Messages
Meaning
This counter measures the total number of downlink point-to-point short messages.
Trigger Point
None.
Formula
Downlink Point-to-Point Short Messages = [Downlink Point-to-Point Short Messages on
SDCCH] + [Downlink Point-to-Point Short Messages on TCH]
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11.4.8 Point-to-Point Short Messages on SDCCH
Counter
CA3340: Point-to-Point Short Messages on SDCCH
Meaning
This counter measures the number of point-to-point short messages on the SDCCH.
Trigger Point
None.
Formula
Point-to-Point Short Messages on SDCCH = [Uplink Point-to-Point Short Messages on
SDCCH] + [Downlink Point-to-Point Short Messages on SDCCH]
11.4.9 Point-to-Point Short Messages on TCH
Counter
CA3349: Point-to-Point Short Messages on TCH
Meaning
This counter measures the number of point-to-point short messages on the TCH.
Trigger Point
None.
Formula
Point-to-Point Short Messages on TCH = [Uplink Point-to-Point Short Messages on TCH] +
[Downlink Point-to-Point Short Messages on TCH]
11.5 Call Drop Measurement per Cell
11.5.1 Overview
Call Drop Measurement per Cell is used to measure the call drops based on the causes,
channel types, service types, and call status of the call drops.
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Table 11-5 lists the counter classification of Call Drop Measurement per Cell.
Table 11-5 Counter classification of Call Drop Measurement per Cell
Counter Classification
Section
Call Drop Sampled Measurement per Cell
11.5.2
Call Drop Analyzed Measurement per Cell
11.5.3
11.5.2 Call Drop Sampled Measurement per Cell
Counter
Table 11-6 lists the counters of Call Drop Sampled Measurement per Cell.
Table 11-6 Counters of Call Drop Sampled Measurement per Cell
11-16
Number
Counter
1
M3000A: Call Drops due to ERR IND Received on SDCCH in Stable State
(T200 Expired)
2
M3000B: Call Drops due to ERR IND Received on SDCCH in Stable State
(Unsolicited DM Response)
3
M3000C: Call Drops due to ERR IND Received on SDCCH in Stable State
(Sequence Error)
4
M3400A: Call Drops due to ERR IND Received on TCHF (Signaling Channel)
in Stable State (T200 Expired)
5
M3400B: Call Drops due to ERR IND Received on TCHF (Signaling Channel)
in Stable State (Unsolicited DM Response)
6
M3400C: Call Drops due to ERR IND Received on TCHF (Signaling Channel)
in Stable State (Sequence Error)
7
M3500A: Call Drops due to ERR IND Received on TCHH (Signaling Channel)
in Stable State (T200 Expired)
8
M3500B: Call Drops due to ERR IND Received on TCHH (Signaling Channel)
in Stable State (Unsolicited DM Response)
9
M3500C: Call Drops due to ERR IND Received on TCHH (Signaling Channel)
in Stable State (Sequence Error)
10
M3100A: Call Drops due to ERR IND Received on TCHF (Traffic Channel) in
Stable State (T200 Expired)
11
M3100B: Call Drops due to ERR IND Received on TCHF (Traffic Channel) in
Stable State (Unsolicited DM Response)
12
M3100C: Call Drops due to ERR IND Received on TCHF (Traffic Channel) in
Stable State (Sequence Error)
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Number
Counter
13
M3200A: Call Drops due to ERR IND Received on TCHH (Traffic Channel) in
Stable State (T200 Expired)
14
M3200B: Call Drops due to ERR IND Received on TCHH (Traffic Channel) in
Stable State (Unsolicited DM Response)
15
M3200C: Call Drops due to ERR IND Received on TCHH (Traffic Channel) in
Stable State (Sequence Error)
16
M3001A: Call Drops due to ERR IND Received on SDCCH in Stable State
(Radio Link Failure)
17
M3001B: Call Drops due to ERR IND Received on SDCCH in Stable State
(HO Access Failure)
18
M3001C: Call Drops due to ERR IND Received on SDCCH in Stable State
(OM Intervention)
19
M3001D: Call Drops due to ERR IND Received on SDCCH in Stable State
(Radio Resource Unavailable)
20
M3001E: Call Drops due to ERR IND Received on SDCCH in Stable State
(Other Causes)
21
M3401A: Call Drops due to ERR IND Received on TCHF (Signaling Channel)
in Stable State (Radio Link Failure)
22
M3401B: Call Drops due to ERR IND Received on TCHF (Signaling Channel)
in Stable State (HO Access Failure)
23
M3401C: Call Drops due to ERR IND Received on TCHF (Signaling Channel)
in Stable State (OM Intervention)
24
M3401D: Call Drops due to ERR IND Received on TCHF (Signaling Channel)
in Stable State (Radio Resource Unavailable)
25
M3401E: Call Drops due to ERR IND Received on TCHF (Signaling Channel)
in Stable State (Other Causes)
26
M3501A: Call Drops due to ERR IND Received on TCHH (Signaling Channel)
in Stable State (Radio Link Failure)
27
M3501B: Call Drops due to ERR IND Received on TCHH (Signaling Channel)
in Stable State (HO Access Failure)
28
M3501C: Call Drops due to ERR IND Received on TCHH (Signaling Channel)
in Stable State (OM Intervention)
29
M3501D: Call Drops due to ERR IND Received on TCHH (Signaling Channel)
in Stable State (Radio Resource Unavailable)
30
M3501E: Call Drops due to ERR IND Received on TCHH (Signaling Channel)
in Stable State (Other Causes)
31
M3101A: Call Drops due to ERR IND Received on TCHF (Traffic Channel) in
Stable State (Radio Link Failure)
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Number
Counter
32
M3101B: Call Drops due to ERR IND Received on TCHF (Traffic Channel) in
Stable State (HO Access Failure)
33
M3101C: Call Drops due to ERR IND Received on TCHF (Traffic Channel) in
Stable State (OM Intervention)
34
M3101D: Call Drops due to ERR IND Received on TCHF (Traffic Channel) in
Stable State (Radio Resource Unavailable)
35
M3101E: Call Drops due to ERR IND Received on TCHF (TCH) in Stable
State (Other Causes)
36
M3201A: Call Drops due to ERR IND Received on TCHH (TCH) in Stable
State (Radio Link Failure)
37
M3201B: Call Drops due to ERR IND Received on TCHH (TCH) in Stable
State (HO Access Failure)
38
M3201C: Call Drops due to ERR IND Received on TCHH (TCH) in Stable
State (OM Intervention)
39
M3201D: Call Drops due to ERR IND Received on TCHH (TCH) in Stable
State (Radio Resource Unavailable)
40
M3201E: Call Drops due to ERR IND Received on TCHH (TCH) in Stable
State (Other Causes)
41
M3002: Call Drops due to REL IND Received on SDCCH
42
M3402: Call Drops due to REL IND Received on TCHF (Signaling Channel)
43
M3102: Call Drops due to REL IND Received on TCHF (TCH)
44
M3502: Call Drops due to REL IND Received on TCHH (Signaling Channel)
45
M3202: Call Drops due to REL IND Received on TCHH (TCH)
46
M302: Call Drops due to No MRs from MS for a Long Time (SDCCH)
47
M342: Call Drops due to No MRs from MS for a Long Time (TCHF)
(Signaling Channel)
48
M312: Call Drops due to No MRs from MS for a Long Time (TCHF) (TCH)
49
M352: Call Drops due to No MRs from MS for a Long Time (TCHH)
(Signaling Channel)
50
M322: Call Drops due to No MRs from MS for a Long Time (TCHH) (TCH)
51
M303: Call Drops due to Abis Terrestrial Link Failure (SDCCH)
52
M343: Call Drops due to Abis Terrestrial Link Failure (TCHF) (Signaling
Channel)
53
M313: Call Drops due to Abis Terrestrial Link Failure (TCHF) (TCH)
54
M353: Call Drops due to Abis Terrestrial Link Failure (TCHH) (Signaling
Channel)
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Number
Counter
55
M323: Call Drops due to Abis Terrestrial Link Failure (TCHH) (TCH)
56
M304: Call Drops due to Equipment Failure (SDCCH)
57
M344: Call Drops due to Equipment Failure (TCHF) (Signaling Channel)
58
M314: Call Drops due to Equipment Failure (TCHF) (TCH)
59
M354: Call Drops due to Equipment Failure (TCHH) (Signaling Channel)
60
M324: Call Drops due to Equipment Failure (TCHH) (TCH)
61
M305: Call Drops due to Forced Handover (SDCCH)
62
M345: Call Drops due to Forced Handover (TCHF) (Signaling Channel)
63
M315: Call Drops due to Forced Handover (TCHF) (TCH)
64
M355: Call Drops due to Forced Handover (TCHH) (Signaling Channel)
65
M325: Call Drops due to Forced Handover (TCHH) (TCH)
66
M306: Call Drops due to Resource Check (SDCCH)
67
M346: Call Drops due to Resource Check (TCHF) (Signaling Channel)
68
M356: Call Drops due to Resource Check (TCHH) (Signaling Channel)
69
M316: Call Drops due to Resource Check (TCHF) (TCH)
70
M326: Call Drops due to Resource Check (TCHH) (TCH)
71
M317: Call Drops after Answer (TCHF) (TCH)
72
M327: Call Drops after Answer (TCHH) (TCH)
73
M318: Successful Connections (TCHF) (TCH)
74
M328: Successful Connections (TCHH) (TCH)
75
M309: Clear Requests Sent on the A-Interface (SDCCH)
76
M349: Clear Requests Sent on the A-Interface (TCHF) (Signaling Channel)
77
M359: Clear Requests Sent on the A-Interface (TCHH) (Signaling Channel)
78
M319A: Clear Requests Sent on the A-Interface in Stable State (TCHF) (TCH)
79
M319B: Clear Requests Sent on the A-Interface in Handover State (TCHF)
(TCH)
80
M329A: Clear Requests Sent on the A-Interface in Stable State (TCHH) (TCH)
81
M329B: Clear Requests Sent on the A-Interface in Handover State (TCHH)
(TCH)
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Meaning
After an MS occupies a channel, the BTS sends an ERR IND message to the BSC because of
radio link errors. Call drops occur on the Um interface. When receiving the ERR IND
message with a cause value of timer T200 expired (N200+1) times (0x01), unsolicited DM
response, multiple frame established state (0x05), or sequence error (0x07) in it, the BSC
measures the call drop counters related to ERR IND. The measurement is based on the
channel type (SDCCH, TCHF, or TCHH), service type (signaling or traffic), and cause value.
After an MS occupies a channel, the BTS sends a CONN FAIL IND message to the BSC
because of radio link errors or hardware failure. Call drops occur on the Um interface. When
receiving the CONN FAIL IND message with a cause value of radio link failure (0x01),
handover access failure (0x02), OM intervention (0x07), or radio resource not available (0x21)
in it, the BSC measures the call drop counters related to CONN FAIL IND on the basis of the
channel type (SDCCH, TCHF, or TCHH), service type (signaling or traffic), and cause value.
In multiframe link setup status, the BTS sends a REL IND message to the BSC after receiving
the DISC frame from an MS. Call drops occur on the Um interface. The BSC measures the
call drop counters related to REL IND on the basis of the channel type (SDCCH, TCHF, or
TCHH), service type (signaling or traffic), and cause value.
After an MS occupies an SDCCH, it sends a measurement report to the network every 470 ms.
After an MS occupies a TCH, it sends a measurement report to the network every 480 ms. If
the BSC does not receive any measurement report within scheduled time (five minutes by
default), call drops occur on the Um interface. The BSC measures the call drop counters
related to no measurement reports based on the channel type (SDCCH, TCHF, or TCHH) and
the service type (signaling or traffic).
After an MS occupies a channel, the BTS sends a CONN FAIL IND message to the BSC
because of radio link connection failure. Call drops occur on the Um interface. When
receiving the CONN FAIL IND message with a cause equipment failure (0x20) or terrestrial
channel failure (0x22), the BSC measures the call drop counters related to hardware failure on
the basis of the channel type (SDCCH, TCHF, or TCHH), service type (signaling or traffic),
and cause value.
After an MS occupies a channel, the BSC measures the call drop counters related to
equipment failure on the basis of the channel type (SDCCH, TCHF, or TCHH) and the service
type (signaling or traffic) if a release procedure is initiated because of BSC internal errors.
After an MS occupies a channel, a forced handover is initiated but failed. If the release
procedure is required, the BSC measures the call drop counters related to the forced handover
based on the channel type (SDCCH, TCHF, or TCHH) and the service type (signaling or
traffic).
After an MS occupies a channel, a release procedure is initiated if the resource check fails.
The BSC measures the call drop counters related to the resource check based on the channel
type (SDCCH, TCHF, or TCHH) and the service type (signaling or traffic).
After a call is established, a conversation begins if the called party answers. If a call drop
occurs for a certain reason, the BSC measures the related call drop counters after a
conversation begins based on the channel type (TCHF or TCHH).
After a call is established, the BSC receives the CONN message from the called MS and the
CONN ACK message from the calling MS if the called party answers. The BSC measures the
counters related to successful connections based on the channel type (TCHF or TCHH).
After an MS occupies a channel, the BSC measures the counters related to clear requests sent
on the A interface on the basis of the channel type (SDCCH, TCHF, or TCHH), service type
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(signaling or traffic), or status (stable or HO) when the BSC sends a CLR REQ message to the
MSC.
Trigger Point
The measurement of call drops is triggered when a call drop occurs. The measurement of
successful connections is triggered when the called party answers.
Formula
None.
11.5.3 Call Drop Analyzed Measurement per Cell
Counter
Table 11-7 lists the counters of Call Drop Analyzed Measurement per Cell.
Table 11-7 Counters of Call Drop Analyzed Measurement per Cell
Number
Counter
1
CM33: Call Drops on TCH
2
CM360: Call Drops on Radio Interface in Stable State (Signaling Channel)
3
CM361: Call Drops on Radio Interface in Handover State (Signaling Channel)
4
CM36: Call Drops on Signaling Channel
5
CM330: Call Drops on Radio Interface in Stable State (TCH)
6
CM331: Call Drops on Radio Interface in Handover State (TCH)
7
CM3600: Call Drops on Signaling Channel in Stable State (Error Indication)
8
CM3601: Call Drops on Signaling Channel in Stable State (Connection
Failure)
9
CM3602: Call Drops on Signaling Channel in Stable State (Release Indication)
10
CM36C: Call Drops on Radio Interface (Signaling Channel)
11
CM362: Call Drops due to No MRs from MS for a Long Time (Signaling
Channel)
12
CM363: Call Drops due to Abis Terrestrial Link Failure (Signaling Channel)
13
CM364: Call Drops due to Equipment Failure (Signaling Channel)
14
CM365: Call Drops due to Forced Handover (Signaling Channel)
15
CM33C: Call Drops on Radio Interface (TCH)
16
CM3301: Call Drops on TCH in Stable State (Connection Failure)
17
CM3300: Call Drops on TCH in Stable State (Error Indication)
18
CM3302: Call Drops on TCH in Stable State (Release Indication)
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Number
Counter
19
CM332: Call Drops due to No MRs from MS for a Long Time (TCH)
20
CM333: Call Drops due to Abis Terrestrial Link Failure (TCH)
21
CM334: Call Drops due to Equipment Failure (TCH)
22
CM335: Call Drops due to Forced Handover (TCH)
23
CM30: Call Drops on SDCCH
24
CM30A: Call Drops on Radio Interface (SDCCH)
25
CM396: Call Drops due to Resource Check
26
CM337: Call Drops after Answer
27
CM338: Successful Connections
28
CM369: Clear Requests Sent on the A Interface (TCH) (Signaling Channel)
29
CM339A: Clear Requests Sent on the A Interface in Stable State (TCH)
(Traffic Channel)
30
CM339B: Clear Requests Sent on the A Interface in Handover State (TCH)
(Traffic Channel)
31
CM339: Clear Requests Sent on the A Interface (TCH) (Traffic Channel)
Meaning
None.
Trigger Point
None.
Formula
Call Drops on TCH =
[Call Drops on Radio Interface in Stable State (TCH)] +
[Call Drops on Radio Interface in Handover State (TCH)] +
[Call Drops due to No MRs from MS for a Long Time (TCH)] +
[Call Drops due to Abis Terrestrial Link Failure (TCH)] +
[Call Drops due to Equipment Failure (TCH)] +
[Call Drops due to Forced Handover (TCH)]
Call Drops on Radio Interface in Stable State (Signaling Channel) =
[Call Drops on Signaling Channel in Stable State (Error Indication)] +
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[Call Drops on Signaling Channel in Stable State (Connection Failure)] +
[Call Drops on Signaling Channel in Stable State (Release Indication)]
Call Drops on Radio Interface in Handover State (Signaling Channel) =
[Failed Internal Intra-Cell Handovers (Timer Expired) (SDCCH)] +
[Failed Internal Intra-Cell Handovers (Timer Expired) (TCHF) (Signaling Channel)] +
[Failed Internal Intra-Cell Handovers (Timer Expired) (TCHH) (Signaling Channel)] +
[Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (SDCCH) (Excluding
Directed Retry)] +
[Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (Directed Retry)] +
[Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (TCHF) (Signaling Channel)]
+
[Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (TCHH) (Signaling Channel)]
+
[Failed Outgoing External Inter-Cell Handovers (T8 Expired) (SDCCH) (Excluding Directed
Retry)] +
[Failed Outgoing External Inter-Cell Handovers (T8 Expired) (Directed Retry)] +
[Failed Outgoing External Inter-Cell Handovers (T8 Expired) (TCHF) (Signaling Channel)] +
[Failed Outgoing External Inter-Cell Handovers (T8 Expired) (TCHH) (Signaling Channel)] +
[Failed Incoming External Inter-Cell Handovers (Timer Expired) (SDCCH)] +
[Failed Incoming External Inter-Cell Handovers (Timer Expired) (TCH) (Signaling Channel)]
Call Drops on Signaling Channel =
[Call Drops on Radio Interface in Stable State (Signaling Channel)] +
[Call Drops on Radio Interface in Handover State (Signaling Channel)] +
[Call Drops due to No MRs from MS for a Long Time (Signaling Channel)] +
[Call Drops due to Abis Terrestrial Link Failure (Signaling Channel)] +
[Call Drops due to Equipment Failure (Signaling Channel)] +
[Call Drops due to Forced Handover (Signaling Channel)]
Call Drops on Radio Interface in Stable State (TCH) =
[Call Drops on TCH in Stable State (Error Indication)] +
[Call Drops on TCH in Stable State (Connection Failure)] +
[Call Drops on TCH in Stable State (Release Indication)]
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Call Drops on Radio Interface in Handover State (TCH) =
[Failed Internal Intra-Cell Handovers (Timer Expired) (TCHF) (Traffic Channel)] +
[Failed Internal Intra-Cell Handovers (Timer Expired) (TCHH) (Traffic Channel)] +
[Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (TCHF) (Traffic Channel)] +
[Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (TCHH) (Traffic Channel)] +
[Failed Outgoing External Inter-Cell Handovers (T8 Expired) (TCHF) (Traffic Channel)] +
[Failed Outgoing External Inter-Cell Handovers (T8 Expired) (TCHH) (Traffic Channel)] +
[Failed Incoming External Inter-Cell Handovers (Timer Expired) (TCH) (Traffic Channel)]
Call Drops on Signaling Channel in Stable State (Error Indication) =
[Call Drops due to ERR IND Received on SDCCH in Stable State (T200 Expired)] +
[Call Drops due to ERR IND Received on SDCCH in Stable State (Unsolicited DM
Response)] +
[Call Drops due to ERR IND Received on SDCCH in Stable State (Sequence Error)] +
[Call Drops due to ERR IND Received on TCHF in Stable State (T200 Expired) (Signaling
Channel)] +
[Call Drops due to ERR IND Received on TCHF (Signaling Channel) in Stable State
(Unsolicited DM Response)] +
[Call Drops due to ERR IND Received on TCHF (Signaling Channel) in Stable State
(Sequence Error)] +
[Call Drops due to ERR IND Received on TCHH (Signaling Channel) in Stable State (T200
Expired)] +
[Call Drops due to ERR IND Received on TCHH (Signaling Channel) in Stable State
(Unsolicited DM Response)] +
[Call Drops due to ERR IND Received on TCHH (Signaling Channel) in Stable State
(Sequence Error)]
Call Drops on Signaling Channel in Stable State (Connection Failure) =
[Call Drops due to ERR IND Received on SDCCH in Stable State (Radio Link Failure)] +
[Call Drops due to ERR IND Received on SDCCH in Stable State (HO Access Failure)] +
[Call Drops due to ERR IND Received on SDCCH in Stable State (OM Intervention)] +
[Call Drops due to ERR IND Received on SDCCH in Stable State (Radio Resource
Unavailable)] +
[Call Drops due to ERR IND Received on SDCCH in Stable State (Other Causes)] +
[Call Drops due to ERR IND Received on TCHF (Signaling Channel) in Stable State (Radio
Link Failure)] +
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[Call Drops due to ERR IND Received on TCHF (Signaling Channel) in Stable State (HO
Access Failure)] +
[Call Drops due to ERR IND Received on TCHF (Signaling Channel) in Stable State (OM
Intervention)] +
[Call Drops due to ERR IND Received on TCHF (Signaling Channel) in Stable State (Radio
Resource Unavailable) in Stable State (OM Intervention)] +
[Call Drops due to ERR IND Received on TCHF (Signaling Channel) in Stable State (Other
Causes)] +
[Call Drops due to ERR IND Received on TCHH (Signaling Channel) in Stable State (Radio
Link Failure)] +
[Call Drops due to ERR IND Received on TCHH (Signaling Channel) in Stable State (HO
Access Failure)] +
[Call Drops due to ERR IND Received on TCHH (Signaling Channel) in Stable State (OM
Intervention)] +
[Call Drops due to ERR IND Received on TCHH (Signaling Channel) in Stable State (Radio
Resource Unavailable)] +
[Call Drops due to ERR IND Received on TCHH (Signaling Channel) in Stable State (Other
Causes)]
Call Drops on Signaling Channel in Stable State (Release Indication) =
[Call Drops due to REL IND Received on SDCCH] +
[Call Drops due to REL IND Received on TCHF (Signaling Channel)] +
[Call Drops due to REL IND Received on TCHH (Signaling Channel)]
Call Drops on Radio Interface (Signaling Channel) =
[Call Drops on Radio Interface in Stable State (Signaling Channel)] +
[Call Drops on Radio Interface in Handover State (Signaling Channel)]
Call Drops due to No MRs from MS for a Long Time (Signaling Channel) =
[Call Drops due to No MRs from MS for a Long Time (SDCCH)] +
[Call Drops due to No MRs from MS for a Long Time (TCHF) (Signaling Channel)] +
[Call Drops due to No MRs from MS for a Long Time (TCHH) (Signaling Channel)]
Call Drops due to Abis Terrestrial Link Failure (Signaling Channel) =
[Call Drops due to Abis Terrestrial Link Failure (SDCCH)] +
[Call Drops due to Abis Terrestrial Link Failure (TCHF) (Signaling Channel)] +
[Call Drops due to Abis Terrestrial Link Failure (TCHH) (Signaling Channel)]
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Call Drops due to Equipment Failure (Signaling Channel) =
[Call Drops due to Equipment Failure (SDCCH)] +
[Call Drops due to Equipment Failure (TCHF) (Signaling Channel)] +
[Call Drops due to Equipment Failure (TCHH) (Signaling Channel)]
Call Drops due to Forced Handover (Signaling Channel) =
[Call Drops due to Forced Handover (SDCCH)] +
[Call Drops due to Forced Handover (TCHF) (Signaling Channel)] +
[Call Drops due to Forced Handover (TCHH) (Signaling Channel)]
Call Drops on Radio Interface (TCH) =
[Call Drops on Radio Interface in Stable State (TCH)] +
[Call Drops on Radio Interface in Handover State (TCH)] +
Call Drops on TCH in Stable State (Connection Failure) =
[Call Drops due to ERR IND Received on TCHF (TCH) in Stable State (Radio Link Failure)]
+
[Call Drops due to ERR IND Received on TCHF (TCH) in Stable State (HO Access Failure)]
+
[Call Drops due to ERR IND Received on TCHF (TCH) in Stable State (OM Intervention)] +
[Call Drops due to ERR IND Received on TCHF (TCH) in Stable State (Radio Resource
Unavailable)] +
[Call Drops due to ERR IND Received on TCHF (TCH) in Stable State (Other Causes)] +
[Call Drops due to ERR IND Received on TCHH (TCH) in Stable State (Radio Link Failure)]
+
[Call Drops due to ERR IND Received on TCHH (TCH) in Stable State (HO Access Failure)]
+
[Call Drops due to ERR IND Received on TCHH (TCH) in Stable State (OM Intervention)] +
[Call Drops due to ERR IND Received on TCHH (TCH) in Stable State (Radio Resource
Unavailable)] +
[Call Drops due to ERR IND Received on TCHH (TCH) in Stable State (Other Causes)]
Call Drops on TCH in Stable State (Error Indication) =
[Call Drops due to ERR IND Received on TCHF (TCH) in Stable State (T200 Expired)] +
[Call Drops due to ERR IND Received on TCHF (TCH) in Stable State (Unsolicited DM
Response)] +
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[Call Drops due to ERR IND Received on TCHF (TCH) in Stable State (Sequence Error)] +
[Call Drops due to ERR IND Received on TCHH (TCH) in Stable State (T200 Expired)] +
[Call Drops due to ERR IND Received on TCHH (TCH) in Stable State (Unsolicited DM
Response)] +
[Call Drops due to ERR IND Received on TCHH (TCH) in Stable State (Sequence Error)]
Call Drops on TCH in Stable State (Release Indication) =
[Call Drops due to REL IND Received on TCHF (TCH)] +
[Call Drops due to REL IND Received on TCHH (TCH)]
Call Drops due to No MRs from MS for a Long Time (TCH) =
[Call Drops due to No MRs from MS for a Long Time (TCHF) (TCH)] +
[Call Drops due to No MRs from MS for a Long Time (TCHH) (TCH)]
Call Drops due to Abis Terrestrial Link Failure (TCH) =
[Call Drops due to Abis Terrestrial Link Failure (TCHF) (TCH)] +
[Call Drops due to Abis Terrestrial Link Failure (TCHH) (TCH)]
Call Drops due to Equipment Failure (TCH) =
[Call Drops due to Equipment Failure (TCHF) (TCH)] +
[Call Drops due to Equipment Failure (TCHH) (TCH)]
Call Drops due to Forced Handover (TCH) =
[Call Drops due to Forced Handover (TCHF) (TCH)] +
[Call Drops due to Forced Handover (TCHH) (TCH)]
Call Drops on SDCCH =
[Call Drops on Radio Interface (SDCCH)] +
[Call Drops due to No MRs from MS for a Long Time (SDCCH)] +
[Call Drops due to Abis Terrestrial Link Failure (SDCCH)] +
[Call Drops due to Equipment Failure (SDCCH)] +
[Call Drops due to Forced Handover (SDCCH)]
Call Drops on Radio Interface (SDCCH) =
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[Call Drops due to ERR IND Received on SDCCH in Stable State (T200 Expired)] +
[Call Drops due to ERR IND Received on SDCCH in Stable State (Unsolicited DM
Response)] +
[Call Drops due to ERR IND Received on SDCCH in Stable State (Sequence Error)] +
[Call Drops due to ERR IND Received on SDCCH in Stable State (Radio Link Failure)] +
[Call Drops due to ERR IND Received on SDCCH in Stable State (HO Access Failure)] +
[Call Drops due to ERR IND Received on SDCCH in Stable State (OM Intervention)] +
[Call Drops due to ERR IND Received on SDCCH in Stable State (Radio Resource
Unavailable)] +
[Call Drops due to ERR IND Received on SDCCH in Stable State (Other Causes)] +
[Call Drops due to REL IND Received on SDCCH] +
[Failed Internal Intra-Cell Handovers (Timer Expired) (SDCCH)] +
[Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (SDCCH) (Excluding
Directed Retry)] +
[Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (Directed Retry)] +
[Failed Outgoing External Inter-Cell Handovers (T8 Expired) (SDCCH) (Excluding Directed
Retry)] +
[Failed Outgoing External Inter-Cell Handovers (T8 Expired) (Directed Retry)] +
[Failed Incoming External Inter-Cell Handovers (Timer Expired) (SDCCH)]
Call Drops due to Resource Check =
[Call Drops due to Resource Check (SDCCH)] +
[Call Drops due to Resource Check (TCHF) (Signaling Channel)] +
[Call Drops due to Resource Check (TCHH) (Signaling Channel)] +
[Call Drops due to Resource Check (TCHF) (TCH)] +
[Call Drops due to Resource Check (TCHH) (TCH)]
Call Drops after Answer =
[Call Drops after Answer (TCHF) (TCH)] +
[Call Drops after Answer (TCHH) (TCH)]
Successful Connections =
[Successful Connections (TCHF) (TCH)] +
[Successful Connections (TCHH) (TCH)]
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Clear Requests Sent on the A Interface (TCH) (Signaling Channel) =
[Clear Requests Sent on the A-Interface (TCHF) (Signaling Channel)] +
[Clear Requests Sent on the A-Interface (TCHH) (Signaling Channel)]
Clear Requests Sent on the A Interface in Stable State (TCH) (Traffic Channel) =
[Clear Requests Sent on the A-Interface in Stable State (TCHF) (TCH)] +
[Clear Requests Sent on the A-Interface in Stable State (TCHH) (TCH)]
Clear Requests Sent on the A Interface in Handover State (TCH) (Traffic Channel) =
[Clear Requests Sent on the A-Interface in Handover State (TCHF) (TCH)] +
[Clear Requests Sent on the A-Interface in Handover State (TCHH) (TCH)]
Clear Requests Sent on the A Interface (TCH) (Traffic Channel) =
[Clear Requests Sent on the A-Interface in Stable State (TCH) (Traffic Channel)] +
[Clear Requests Sent on the A Interface in Handover State (TCH) (Traffic Channel)]
11.6 Channel Activation Measurement per Cell
11.6.1 Overview
Channel Activation Measurement per Cell is used to measure the activation of all types of
channels in a cell.
Table 11-8 lists the counter classification of Channel Activation Measurement per Cell.
Table 11-8 Counter classification of Channel Activation Measurement per Cell
Counter Classification
Section
SDCCH Connection Measurement per Cell
11.6.2
TCH Connection Measurement per Cell
11.6.3
Channel Activation Analyzed Measurement per Cell
11.6.4
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11.6.2 SDCCH Connection Measurement per Cell
Counter
Table 11-9 lists the counters of SDCCH Connection Measurement per Cell.
Table 11-9 Counters of SDCCH Connection Measurement per Cell
Number
Counter
1
R3300A: Channel Activation Attempts in Immediate Assignment Procedure
(SDCCH)
2
R3300B: CHAN ACTIV NACK Messages Sent by BTS in Immediate
Assignment Procedure (SDCCH)
3
R3300C: Channel Activation Timeouts in Immediate Assignment Procedure
(SDCCH)
4
R3330A: Channel Activation Attempts in Internal Intra-Cell Handover
Procedure (SDCCH)
5
R3330B: CHAN ACTIV NACK Messages Sent by BTS in Internal Intra-Cell
Handover Procedure (SDCCH)
6
R3330C: Channel Activation Timeouts in Internal Intra-Cell Handover
Procedure (SDCCH)
7
R3340A: Channel Activation Attempts in Incoming Internal Inter-Cell
Handover Procedure (SDCCH)
8
R3340B: CHAN ACTIV NACK Messages Sent by BTS in Incoming Internal
Inter-Cell Handover Procedure (SDCCH)
9
R3340C: Channel Activation Timeouts in Incoming Internal Inter-Cell
Handover Procedure (SDCCH)
10
R3350A: Channel Activation Attempts in Incoming External Inter-Cell
Handover Procedure (SDCCH)
11
R3350B: CHAN ACTIV NACK Messages Sent by BTS in Incoming External
Inter-Cell Handover Procedure (SDCCH)
12
R3350C: Channel Activation Timeouts in Incoming External Inter-Cell
Handover Procedure (SDCCH)
Meaning
After receiving a CHAN RQD message from the BTS, the BSC measures R3300A: Channel
Activation Attempts in Immediate Assignment Procedure (SDCCH) in the cell where the
SDCCH is located if the BSC assigns an SDCCH and sends a CHAN ACTIV message to the
BTS.
In the SDCCH immediate assignment procedure, the BSC sends a CHAN ACTIV message to
the BTS. If the BTS returns a CHAN ACTIV NACK message, the SDCCH activation fails.
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The BSC measures R3300B: CHAN ACTIV NACK Messages Sent by BTS in Immediate
Assignment Procedure (SDCCH) in the cell where the SDCCH is located.
In the SDCCH immediate assignment procedure, the BSC sends a CHAN ACTIV message to
the BTS and triggers an internal timer. If no CHAN ACTIV ACK message is received within
scheduled time (five seconds by default), the BSC measures R3300C: Channel Activation
Timeouts in Immediate Assignment Procedure (SDCCH) in the cell where the SDCCH is
located.
When the MS is in stable state on the SDCCH, the BSC sends a CHAN ACTIV message to
the BTS where the target cell is located if the BSC decides to initiate a handover based on
measurement reports and if the target cell is the current cell. The BSC measures R3330A:
Channel Activation Attempts in Internal Intra-Cell Handover Procedure (SDCCH) in the cell
where the target SDCCH is located.
In the intra-cell SDCCH handover procedure, the BSC sends a CHAN ACTIV message to the
BTS. If the BTS returns a CHAN ACTIV NACK message, the SDCCH handover fails. The
BSC measures R3330B: CHAN ACTIV NACK Messages Sent by BTS in Internal Intra-Cell
Handover Procedure (SDCCH) in the cell where the target SDCCH is located.
In the intra-cell SDCCH handover procedure, the BSC sends a CHAN ACTIV message to the
BTS and triggers an internal timer. If no CHAN ACTIV ACK message is received within
scheduled time (five seconds by default), the BSC measures R3330C: Channel Activation
Timeouts in Internal Intra-Cell Handover Procedure (SDCCH) in the cell where the target
SDCCH is located.
When the MS is in stable state on the SDCCH, the BSC sends a CHAN ACTIV message to
the BTS where the target cell is located if the BSC decides to initiate a handover based on
measurement reports and if the target cell and the current cell are two cells in one BSC. The
BSC measures R3340A: Channel Activation Attempts in Incoming Internal Inter-Cell
Handover Procedure (SDCCH) in the cell where the target SDCCH is located.
In the incoming internal inter-cell SDCCH handover procedure, the BSC sends a CHAN
ACTIV message to the BTS. If the BTS returns a CHAN ACTIV NACK message, the
SDCCH handover fails. The BSC measures R3340B: CHAN ACTIV NACK Messages Sent
by BTS in Incoming Internal Inter-Cell Handover Procedure (SDCCH) in the cell where the
target SDCCH is located.
In the incoming internal inter-cell SDCCH handover procedure, the BSC sends a CHAN
ACTIV message to the BTS and triggers an internal timer. If no CHAN ACTIV ACK message
is received within scheduled time (five seconds by default), the BSC measures R3340C:
Channel Activation Timeouts in Incoming Internal Inter-Cell Handover Procedure (SDCCH)
in the cell where the target SDCCH is located.
After receiving an HO REQ message from the MSC, the BSC measures R3350A: Channel
Activation Attempts in Incoming External Inter-Cell Handover Procedure (SDCCH) in the
cell where the target SDCCH is located if the BSC assigns an SDCCH and sends a CHAN
ACTIV message to the BTS.
In the incoming external inter-cell SDCCH handover procedure, the BSC sends a CHAN
ACTIV message to the BTS. If the BTS returns a CHAN ACTIV NACK message, the
SDCCH handover fails. The BSC measures R3350B: CHAN ACTIV NACK Messages Sent
by BTS in Incoming External Inter-Cell Handover Procedure (SDCCH) in the cell where the
target SDCCH is located.
In the incoming external inter-cell SDCCH handover procedure, the BSC sends a CHAN
ACTIV message to the BTS and triggers an internal timer. If no CHAN ACTIV ACK message
is received within scheduled time (five seconds by default), the BSC measures R3350C:
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Channel Activation Timeouts in Incoming External Inter-Cell Handover Procedure (SDCCH)
in the cell where the target SDCCH is located.
Trigger Point
For the trigger points of the counters, see the flow charts in the following measurement units:
z
Immediate Assignment Measurement per Cell
z
Assignment Measurement per Cell
z
Intra-Cell Handover Measurement per Cell
z
Incoming Internal Inter-Cell Handover Measurement per Cell
z
Outgoing Internal Inter-Cell Handover Measurement per Cell
z
Incoming External Inter-Cell Handover Measurement per Cell
z
Outgoing External Inter-Cell Handover Measurement per Cell
z
Incoming Inter-RAT Inter-Cell Handover Measurement per Cell
z
Outgoing External Inter-Cell Handover Measurement per Cell
Formula
None.
11.6.3 TCH Connection Measurement per Cell
Counter
Table 11-10 lists the counters of TCH Connection Measurement per Cell.
Table 11-10 TCH Connection Measurement per Cell
11-32
Number
Counter
1
R3307A: Channel Activation Attempts in Immediate Assignment Procedure
(TCHF)
2
R3308A: Channel Activation Attempts in Immediate Assignment Procedure
(TCHH)
3
R3307B: CHAN ACTIV NACK Messages Sent by BTS in Immediate
Assignment Procedure (TCHF)
4
R3308B: CHAN ACTIV NACK Messages Sent by BTS in Immediate
Assignment Procedure (TCHH)
5
R3307C: Channel Activation Timeouts in Immediate Assignment Procedure
(TCHF)
6
R3308C: Channel Activation Timeouts in Immediate Assignment Procedure
(TCHH)
7
R3317A: Channel Activation Attempts in Assignment Procedure (TCHF)
8
R3318A: Channel Activation Attempts in Assignment Procedure (TCHH)
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Number
Counter
9
R3317B: CHAN ACTIV NACK Messages Sent by BTS in Assignment
Procedure (TCHF)
10
R3318B: CHAN ACTIV NACK Messages Sent by BTS in Assignment
Procedure (TCHH)
11
R3317C: Channel Activation Timeouts in Assignment Procedure (TCHF)
12
R3318C: Channel Activation Timeouts in Assignment Procedure (TCHH)
13
R3327A: Channel Activation Attempts in Mode Modify Procedure (TCHF)
14
R3328A: Channel Activation Attempts in Mode Modify Procedure (TCHH)
15
R3327B: CHAN ACTIV NACK Messages Sent by BTS in Mode Modify
Procedure (TCHF)
16
R3328B: CHAN ACTIV NACK Messages Sent by BTS in Mode Modify
Procedure (TCHH)
17
R3327C: Channel Activation Timeouts in Mode Modify Procedure (TCHF)
18
R3328C: Channel Activation Timeouts in Mode Modify Procedure (TCHH)
19
R3337A: Channel Activation Attempts in Internal Intra-Cell Handover
Procedure (TCHF)
20
R3338A: Channel Activation Attempts in Internal Intra-Cell Handover
Procedure (TCHH)
21
R3337B: CHAN ACTIV NACK Messages Sent by BTS in Internal Intra-Cell
Handover Procedure (TCHF)
22
R3338B: CHAN ACTIV NACK Messages Sent by BTS in Internal Intra-Cell
Handover Procedure (TCHH)
23
R3337C: Channel Activation Timeouts in Internal Intra-Cell Handover
Procedure (TCHF)
24
R3338C: Channel Activation Timeouts in Internal Intra-Cell Handover
Procedure (TCHH)
25
R3347A: Channel Activation Attempts in Incoming Internal Inter-Cell
Handover Procedure (TCHF)
26
R3348A: Channel Activation Attempts in Incoming Internal Inter-Cell
Handover Procedure (TCHH)
27
R3347B: CHAN ACTIV NACK Messages Sent by BTS in Incoming Internal
Inter-Cell Handover Procedure (TCHF)
28
R3348B: CHAN ACTIV NACK Messages Sent by BTS in Incoming Internal
Inter-Cell Handover Procedure (TCHH)
29
R3347C: Channel Activation Timeouts in Incoming Internal Inter-Cell
Handover Procedure (TCHF)
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Number
Counter
30
R3348C: Channel Activation Timeouts in Incoming Internal Inter-Cell
Handover Procedure (TCHH)
31
R3357A: Channel Activation Attempts in Incoming External Inter-Cell
Handover Procedure (TCHF)
32
R3358A: Channel Activation Attempts in Incoming External Inter-Cell
Handover Procedure (TCHH)
33
R3357B: CHAN ACTIV NACK Messages Sent by BTS in Incoming External
Inter-Cell Handover Procedure (TCHF)
34
R3358B: CHAN ACTIV NACK Messages Sent by BTS in Incoming External
Inter-Cell Handover Procedure (TCHH)
35
R3357C: Channel Activation Timeouts in Incoming External Inter-Cell
Handover Procedure (TCHF)
36
R3358C: Channel Activation Timeouts in Incoming External Inter-Cell
Handover Procedure (TCHH)
Meaning
In the immediate assignment procedure, the BSC receives a CHAN RQD message from the
BTS. If the BSC assigns a TCH (TCHF or TCHH) and sends a CHAN ACTIV message to the
BTS, the BSC measures R3307A: Channel Activation Attempts in Immediate Assignment
Procedure (TCHF) or R3308A: Channel Activation Attempts in Immediate Assignment
Procedure (TCHH) in the cell where the TCH is located.
In the TCH immediate assignment procedure, the BSC sends a CHAN ACTIV message to the
BTS. If the BTS returns a CHAN ACTIV NACK message, the TCH activation fails. The BSC
measures R3307B: CHAN ACTIV NACK Messages Sent by BTS in Immediate Assignment
Procedure (TCHF) or R3308B: CHAN ACTIV NACK Messages Sent by BTS in Immediate
Assignment Procedure (TCHH) in the cell where the TCH is located.
In the TCH immediate assignment procedure, the BSC sends a CHAN ACTIV message to the
BTS and triggers an internal timer. If no CHAN ACTIV ACK message is received within
scheduled time (five seconds by default), the BSC measures R3307C: Channel Activation
Timeouts in Immediate Assignment Procedure (TCHF) or R3308C: Channel Activation
Timeouts in Immediate Assignment Procedure (TCHH) in the cell where the TCH is located.
When the signaling or traffic is stable, the BSC receives an ASS REQ message from the MSC.
If the requested service is of the speech or the data type and if the assignment procedure
proceeds, the BSC assigns a TCH and sends a CHAN ACTIV message to the BTS.
Meanwhile, the BSC measures R3317A: Channel Activation Attempts in Assignment
Procedure (TCHF) and R3318A: Channel Activation Attempts in Assignment Procedure
(TCHH) in the cell where the TCH is located.
In the assignment procedure, the BSC assigns a TCH and sends a CHAN ACTIV message to
the BTS. If the BTS returns a CHAN ACTIV NACK message, the channel activation fails.
The BSC measures R3317B: CHAN ACTIV NACK Messages Sent by BTS in Assignment
Procedure (TCHF) or R3318B: CHAN ACTIV NACK Messages Sent by BTS in Assignment
Procedure (TCHH) in the cell where the TCH is located.
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In the assignment procedure, the BSC assigns a TCH and sends a CHAN ACTIV message to
the BTS. The BSC also triggers an internal timer concurrently. If no CHAN ACTIV ACK
message is received within scheduled time (five seconds by default), the BSC measures
R3317C: Channel Activation Timeouts in Assignment Procedure (TCHF) or R3318C:
Channel Activation Timeouts in Assignment Procedure (TCHH) in the cell where the TCH is
located.
When the signaling or traffic is stable, the BSC receives an ASS REQ message from the MSC.
If the requested service is of the speech or the data type and the BSC decides to initiate the
Mode Modify procedure, the BSC sends a MODE MODIFY message to the BTS and
measures R3327A: Channel Activation Attempts in Mode Modify Procedure (TCHF) or
R3328A: Channel Activation Attempts in Mode Modify Procedure (TCHH) in the cell where
the TCH is located.
In the Mode Modify procedure, the BSC sends a MODE MODIFY message to the BTS. If the
BTS returns a MODE MODIFY NACK message, the Mode Modify procedure fails. The BSC
measures R3327B: CHAN ACTIV NACK Messages Sent by BTS in Mode Modify Procedure
(TCHF) or R3328B: CHAN ACTIV NACK Messages Sent by BTS in Mode Modify
Procedure (TCHH) in the cell where the TCH is located.
In the Mode Modify procedure, the BSC sends a MODE MODIFY message to the BTS and
triggers an internal timer. If no MODE MODIFY ACK message is received within scheduled
time (five seconds by default), the BSC measures R3327C: Channel Activation Timeouts in
Mode Modify Procedure (TCHF) or R3328C: Channel Activation Timeouts in Mode Modify
Procedure (TCHH) in the cell where the TCH is located.
When an MS is in stable state on a TCH, the BSC sends a CHAN ACTIV message to the BTS
where the target cell is located if the BSC decides to initiate a handover based on
measurement reports and if the target cell is the current cell. The BSC measures R3337A:
Channel Activation Attempts in Internal Intra-Cell Handover Procedure (TCHF) or R3338A:
Channel Activation Attempts in Internal Intra-Cell Handover Procedure (TCHH) in the cell
where the target TCH is located.
In the intra-cell TCH handover procedure, the BSC sends a CHAN ACTIV message to the
BTS. If the BTS returns a CHAN ACTIV NACK message, the channel activation fails. The
BSC measures R3337B: CHAN ACTIV NACK Messages Sent by BTS in Internal Intra-Cell
Handover Procedure (TCHF) or R3338B: CHAN ACTIV NACK Messages Sent by BTS in
Internal Intra-Cell Handover Procedure (TCHH) in the cell where the target TCH is located.
In the intra-cell TCH handover procedure, the BSC sends a CHAN ACTIV message to the
BTS and triggers an internal timer. If no CHAN ACTIV ACK is received within scheduled
time (five seconds by default), the BSC measures R3337C: Channel Activation Timeouts in
Internal Intra-Cell Handover Procedure (TCHF) or R3338C: Channel Activation Timeouts in
Internal Intra-Cell Handover Procedure (TCHH) in the cell where the target TCH is located.
When an MS is in stable state on a TCH, the BSC sends a CHAN ACTIV message to the BTS
where the target cell is located if the BSC decides to initiate a handover based on
measurement reports and if the target cell and the current cell are two cells in one BSC.
Meanwhile, the BSC measures R3347A: Channel Activation Attempts in Incoming Internal
Inter-Cell Handover Procedure (TCHF) or R3348A: Channel Activation Attempts in
Incoming Internal Inter-Cell Handover Procedure (TCHH) in the cell where the target TCH is
located.
In the incoming internal inter-cell TCH handover procedure, the BSC sends a CHAN ACTIV
message to the BTS. If the BTS return s a CHAN ACTIV NACK message, the channel
activation fails. The BSC measures R3347B: CHAN ACTIV NACK Messages Sent by BTS
in Incoming Internal Inter-Cell Handover Procedure (TCHF) and R3348B: CHAN ACTIV
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NACK Messages Sent by BTS in Incoming Internal Inter-Cell Handover Procedure (TCHH)
in the cell where the target TCH is located.
In the incoming internal inter-cell TCH handover procedure, the BSC sends a CHAN ACTIV
message to the BTS and triggers an internal timer. If no CHAN ACTIV ACK message is
received within scheduled time (five seconds by default), the BSC measures R3347C:
Channel Activation Timeouts in Incoming Internal Inter-Cell Handover Procedure (TCHF) or
R3348C: Channel Activation Timeouts in Incoming Internal Inter-Cell Handover Procedure
(TCHH) in the cell where the target TCH is located.
The BSC receives a HO REQ message from the MSC. If the BSC assigns a TCH and sends a
CHAN ACTIV to the BTS, the BSC measures R3357A: Channel Activation Attempts in
Incoming External Inter-Cell Handover Procedure (TCHF) or R3358A: Channel Activation
Attempts in Incoming External Inter-Cell Handover Procedure (TCHH) in the cell where the
target TCH is located.
In the incoming external inter-cell TCH handover procedure, the BSC sends a CHAN ACTIV
message to the BTS. If the BTS returns a CHAN ACTIV NACK message, the channel
activation fails. The BSC measures R3357B: CHAN ACTIV NACK Messages Sent by BTS
in Incoming External Inter-Cell Handover Procedure (TCHF) or R3358B: CHAN ACTIV
NACK Messages Sent by BTS in Incoming External Inter-Cell Handover Procedure (TCHH)
in the cell where the target TCH is located.
In the incoming external inter-cell TCH handover procedure, the BSC sends a CHAN ACTIV
message to the BTS and triggers an internal timer. If no CHAN ACTIV ACK message is
received within scheduled time (five seconds by default), the BSC measures R3357C:
Channel Activation Timeouts in Incoming External Inter-Cell Handover Procedure (TCHF) or
R3358C: Channel Activation Timeouts in Incoming External Inter-Cell Handover Procedure
(TCHH) in the cell where the target TCH is located.
Trigger Point
For the trigger points of the counters, see the flow charts in the following measurement units:
z
Immediate Assignment Measurement per Cell
z
Assignment Measurement per Cell
z
Intra-Cell Handover Measurement per Cell
z
Incoming Internal Inter-Cell Handover Measurement per Cell
z
Outgoing Internal Inter-Cell Handover Measurement per Cell
z
Incoming External Inter-Cell Handover Measurement per Cell
z
Outgoing External Inter-Cell Handover Measurement per Cell
z
Incoming Inter-RAT Inter-Cell Handover Measurement per Cell
z
Outgoing External Inter-Cell Handover Measurement per Cell
Formula
None.
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11.6.4 Channel Activation Analyzed Measurement per Cell
Counter
Table 11-10 lists the counters of Channel Activation Analyzed Measurement per Cell.
Table 11-11 Counters of Channel Activation Analyzed Measurement per Cell
Number
Counter
1
CR33A: Channel Activation Attempts
2
CR330A: Channel Activation Attempts in Immediate Assignment Procedure
3
CR331A: Channel Activation Attempts in Assignment Procedure
4
CR332A: Channel Activation Attempts in Mode Modify Procedure
5
CR333A: Channel Activation Attempts in Internal Intra-Cell Handover
Procedure
6
CR334A: Channel Activation Attempts in Incoming Internal Inter-Cell
Handover Procedure
7
CR335A: Channel Activation Attempts in Incoming External Inter-Cell
Handover Procedure
8
CR33B: CHAN ACTIV NACK Messages Sent by BTS
9
CR330B: CHAN ACTIV NACK Messages Sent by BTS in Immediate
Assignment Procedure
10
CR331B: CHAN ACTIV NACK Messages Sent by BTS in Assignment
Procedure
11
CR332B: CHAN ACTIV NACK Messages Sent by BTS in Mode Modify
Procedure
12
CR333B: CHAN ACTIV NACK Messages Sent by BTS in Internal Intra-Cell
Handover Procedure
13
CR334B: CHAN ACTIV NACK Messages Sent by BTS in Incoming Internal
Inter-Cell Handover Procedure
14
CR335B: CHAN ACTIV NACK Messages Sent by BTS in Incoming External
Inter-Cell Handover Procedure
15
CR33C: Channel Activation Timeouts
16
CR330C: Channel Activation Timeouts in Immediate Assignment Procedure
17
CR331C: Channel Activation Timeouts in Assignment Procedure
18
CR332C: Channel Activation Timeouts in Mode Modify Procedure
19
CR333C: Channel Activation Timeouts in Internal Intra-Cell Handover
Procedure
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Number
Counter
20
CR334C: Channel Activation Timeouts in Incoming Internal Inter-Cell
Handover Procedure
21
CR335C: Channel Activation Timeouts in Incoming External Inter-Cell
Handover Procedure
Meaning
None.
Trigger Point
None.
Formula
Channel Activation Attempts =
[Channel Activation Attempts in Immediate Assignment Procedure] +
[Channel Activation Attempts in Assignment Procedure] +
[Channel Activation Attempts in Mode Modify Procedure] +
[Channel Activation Attempts in Internal Intra-Cell Handover Procedure] +
[Channel Activation Attempts in Incoming Internal Inter-Cell Handover Procedure] +
[Channel Activation Attempts in Incoming External Inter-Cell Handover Procedure]
Channel Activation Attempts in Immediate Assignment Procedure =
[Channel Activation Attempts in Immediate Assignment Procedure (SDCCH)] +
[Channel Activation Attempts in Immediate Assignment Procedure (TCHF)] +
[Channel Activation Attempts in Immediate Assignment Procedure (TCHH)]
Channel Activation Attempts in Assignment Procedure =
[Channel Activation Attempts in Assignment Procedure (TCHF)] +
[Channel Activation Attempts in Assignment Procedure (TCHH)]
Channel Activation Attempts in Mode Modify Procedure =
[Channel Activation Attempts in Mode Modify Procedure (TCHF)] +
[Channel Activation Attempts in Mode Modify Procedure (TCHH)]
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Channel Activation Attempts in Internal Intra-Cell Handover Procedure =
[Channel Activation Attempts in Internal Intra-Cell Handover Procedure (SDCCH)] +
[Channel Activation Attempts in Internal Intra-Cell Handover Procedure (TCHF)] +
[Channel Activation Attempts in Internal Intra-Cell Handover Procedure (TCHH)]
Channel Activation Attempts in Incoming Internal Inter-Cell Handover Procedure =
[Channel Activation Attempts in Incoming Internal Inter-Cell Handover Procedure (SDCCH)]
+
[Channel Activation Attempts in Incoming Internal Inter-Cell Handover Procedure (TCHF)] +
[Channel Activation Attempts in Incoming Internal Inter-Cell Handover Procedure (TCHH)]
Channel Activation Attempts in Incoming External Inter-Cell Handover Procedure =
[Channel Activation Attempts in Incoming External Inter-Cell Handover Procedure (SDCCH)]
+
[Channel Activation Attempts in Incoming External Inter-Cell Handover Procedure (TCHF)]
+
[Channel Activation Attempts in Incoming External Inter-Cell Handover Procedure (TCHH)]
CHAN ACTIV NACK Messages Sent by BTS =
[CHAN ACTIV NACK Messages Sent by BTS in Immediate Assignment Procedure] +
[CHAN ACTIV NACK Messages Sent by BTS in Assignment Procedure] +
[CHAN ACTIV NACK Messages Sent by BTS in Mode Modify Procedure] +
[CHAN ACTIV NACK Messages Sent by BTS in Internal Intra-Cell Handover Procedure] +
[CHAN ACTIV NACK Messages Sent by BTS in Incoming Internal Inter-Cell Handover
Procedure] +
[CHAN ACTIV NACK Messages Sent by BTS in Incoming External Inter-Cell Handover
Procedure]
CHAN ACTIV NACK Messages Sent by BTS in Immediate Assignment Procedure =
[CHAN ACTIV NACK Messages Sent by BTS in Immediate Assignment Procedure
(SDCCH)] +
[CHAN ACTIV NACK Messages Sent by BTS in Immediate Assignment Procedure (TCHF)]
+
[CHAN ACTIV NACK Messages Sent by BTS in Immediate Assignment Procedure (TCHH)]
CHAN ACTIV NACK Messages Sent by BTS in Assignment Procedure =
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[CHAN ACTIV NACK Messages Sent by BTS in Assignment Procedure (TCHF)] +
[CHAN ACTIV NACK Messages Sent by BTS in Assignment Procedure (TCHH)]
CHAN ACTIV NACK Messages Sent by BTS in Mode Modify Procedure =
[CHAN ACTIV NACK Messages Sent by BTS in Mode Modify Procedure (TCHF)] +
[CHAN ACTIV NACK Messages Sent by BTS in Mode Modify Procedure (TCHH)]
CHAN ACTIV NACK Messages Sent by BTS in Internal Intra-Cell Handover Procedure =
[CHAN ACTIV NACK Messages Sent by BTS in Internal Intra-Cell Handover Procedure
(SDCCH)] +
[CHAN ACTIV NACK Messages Sent by BTS in Internal Intra-Cell Handover Procedure
(TCHF)] +
[CHAN ACTIV NACK Messages Sent by BTS in Internal Intra-Cell Handover Procedure
(TCHH)]
CHAN ACTIV NACK Messages Sent by BTS in Incoming Internal Inter-Cell Handover
Procedure =
[CHAN ACTIV NACK Messages Sent by BTS in Incoming Internal Inter-Cell Handover
Procedure (SDCCH)] +
[CHAN ACTIV NACK Messages Sent by BTS in Incoming Internal Inter-Cell Handover
Procedure (TCHF)] +
[CHAN ACTIV NACK Messages Sent by BTS in Incoming Internal Inter-Cell Handover
Procedure (TCHH)]
CHAN ACTIV NACK Messages Sent by BTS in Incoming External Inter-Cell Handover
Procedure =
[CHAN ACTIV NACK Messages Sent by BTS in Incoming External Inter-Cell Handover
Procedure (SDCCH)] +
[CHAN ACTIV NACK Messages Sent by BTS in Incoming External Inter-Cell Handover
Procedure (TCHF)] +
[CHAN ACTIV NACK Messages Sent by BTS in Incoming External Inter-Cell Handover
Procedure (TCHH)]
Channel Activation Timeouts =
[Channel Activation Timeouts in Immediate Assignment Procedure] +
[Channel Activation Timeouts in Assignment Procedure] +
[Channel Activation Timeouts in Mode Modify Procedure] +
[Channel Activation Timeouts in Internal Intra-Cell Handover Procedure] +
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[Channel Activation Timeouts in Incoming Internal Inter-Cell Handover Procedure] +
[Channel Activation Timeouts in Incoming External Inter-Cell Handover Procedure]
Channel Activation Timeouts in Immediate Assignment Procedure =
[Channel Activation Timeouts in Immediate Assignment Procedure (SDCCH)] +
[Channel Activation Timeouts in Immediate Assignment Procedure (TCHF)] +
[Channel Activation Timeouts in Immediate Assignment Procedure (TCHH)]
Channel Activation Timeouts in Assignment Procedure =
[Channel Activation Timeouts in Assignment Procedure (TCHF)] +
[Channel Activation Timeouts in Assignment Procedure (TCHH)]
Channel Activation Timeouts in Mode Modify Procedure =
[Channel Activation Timeouts in Mode Modify Procedure (TCHF)] +
[Channel Activation Timeouts in Mode Modify Procedure (TCHH)]
Channel Activation Timeouts in Internal Intra-Cell Handover Procedure =
[Channel Activation Timeouts in Internal Intra-Cell Handover Procedure (SDCCH)] +
[Channel Activation Timeouts in Internal Intra-Cell Handover Procedure (TCHF)] +
[Channel Activation Timeouts in Internal Intra-Cell Handover Procedure (TCHH)]
Channel Activation Timeouts in Incoming Internal Inter-Cell Handover Procedure =
[Channel Activation Timeouts in Incoming Internal Inter-Cell Handover Procedure (SDCCH)]
+
[Channel Activation Timeouts in Incoming Internal Inter-Cell Handover Procedure (TCHF)] +
[Channel Activation Timeouts in Incoming Internal Inter-Cell Handover Procedure (TCHH)]
Channel Activation Timeouts in Incoming External Inter-Cell Handover Procedure =
[Channel Activation Timeouts in Incoming External Inter-Cell Handover Procedure (SDCCH)]
+
[Channel Activation Timeouts in Incoming External Inter-Cell Handover Procedure (TCHF)]
+
[Channel Activation Timeouts in Incoming External Inter-Cell Handover Procedure (TCHH)]
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11.7 Channel Seizure Measurement per TRX
Counter
Channel Seizure Measurement per TRX is used to measure the channel seizures in all types of
service procedures.
Table 11-12 lists the counters of Channel Seizure Measurement per TRX.
Table 11-12 Counters of Channel Seizure Measurement per TRX
Number
Counter
1
R4400A: Attempted Immediate Assignments (SDCCH)
2
R4409A: Attempted Immediate Assignments (TCH)
3
R4400B: Successful Immediate Assignments (SDCCH)
4
R4409B: Attempted Immediate Assignment Procedures (TCH)
5
R4419A: Attempted Assignments (TCH)
6
R4419B: Completed Assignments (TCH)
7
R4429A: Attempted Mode Modify Procedures (TCH)
8
R4429B: Completed Mode Modify Procedures (TCH)
9
R4430A: Attempted Handovers (SDCCH)
10
R4439A: Attempted Handovers (TCH)
11
R4430B: Completed Handovers (SDCCH)
12
R4439B: Completed Handovers (TCH)
13
CR440A: Attempted Immediate Assignments
14
CR440B: Successful Immediate Assignments
15
CR443A: Attempted Handovers
16
CR443B: Completed Handovers
Meaning
In the SDCCH immediate assignment procedure, the BSC receives from the BTS a CHAN
ACTIV ACK message, indicating that the SDCCH is successfully activated. The BSC sends
an IMM ASS CMD message, requesting the MS to access the specified SDCCH. Meanwhile,
the BSC measures R4400A: Attempted Immediate Assignments (SDCCH) in the TRX where
the SDCCH is located.
In the TCH immediate assignment procedure, the BSC receives from the BTS a CHAN
ACTIV ACK message, indicating that the TCH is successfully activated. The BSC sends an
IMM ASS CMD message, requesting the MS to access the specified TCH. Meanwhile, the
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BSC measures R4409A: Attempted Immediate Assignments (TCH) in the TRX where the
TCH is located.
In the SDCCH immediate assignment procedure, an MS reports a FIRST SABM frame to the
BTS on the SDCCH after seizing the assigned SDCCH. Through this frame, the MS notifies
the BTS that the radio link layer has entered multiframe link setup state. The BTS returns a
UA frame to the MS and sends the BSC an EST IND message to notify the BSC that the link
is established on the Um interface. After receiving the EST IND message, the BSC measures
R4400B: Successful Immediate Assignments (SDCCH) in the TRX where the SDCCH is
located.
In the TCH immediate assignment procedure, an MS reports a FIRST SABM frame to the
BTS on the TCH after seizing the assigned TCH. Through this frame, the MS notifies the BTS
that the radio link layer has entered multiframe link setup state. The BTS returns a UA frame
to the MS and sends the BSC an EST IND message to notify the BSC that the link is
established on the Um interface. After receiving the EST IND message, the BSC measures
R4409B: Attempted Immediate Assignment Procedures (TCH) in the TRX where the TCH is
located.
In the assignment procedure, the BSC assigns a TCH and receives a CHAN ACTIV ACK
message. The BSC then sends an ASS CMD message to the MS and measures R4419A
Attempted Assignments (TCH) in the TRX where the TCH is located.
In the assignment procedure, the BSC assigns a TCH and sends an ASS CMD message to the
MS. After receiving the ASS CMD message, the MS sends the BTS a FIRST SABM frame,
indicating that the Um interface is in multiframe link setup state. The BTS returns a UA frame
to the MS and sends the BSC an EST IND message, indicating that the link is established on
the Um interface. After receiving the UA frame, the MS sends an ASS CMP message to the
BSC. The BSC receives this message and measures R4419B: Completed Assignments (TCH)
in the TRX where the TCH is located.
In the Mode Modify procedure, the BSC sends a CHAN MODE MODIFY message to the MS
after receiving a MODE MODIFY ACK message. Meanwhile, the BSC measures R4429A:
Attempted Mode Modify Procedures (TCH) in the TRX where the TCH is located.
In the Mode Modify procedure, the MS sends a FIRST SABM frame to the BTS after
receiving a CHAN MODE MODIFY message. This frame indicates that the Um interface is in
multiframe link setup state. The BTS returns a UA frame to the MS and sends the BSC an
EST IND message, indicating that the link is established on the Um interface. After receiving
the UA frame, the MS sends a CHAN MODE MODIFY ACK message to the BSC. The BSC
receives this message and measures R4429B: Completed Mode Modify Procedures (TCH) in
the TRX where the TCH is located.
In the SDCCH handover procedure, the BSC sends an HO CMD message from the source cell
to the MS after receiving a CHAN ACTIV ACK message from the target cell. Meanwhile, the
BSC measures R4430A: Attempted Handovers (SDCCH) in the TRX where the target
SDCCH is located.
In the TCH handover procedure, the BSC sends an HO CMD message from the source cell to
the MS after receiving a CHAN ACTIV ACK message from the target cell. Meanwhile, the
BSC measures R4439A: Attempted Handovers (TCH) in the TRX where the target TCH is
located.
In the SDCCH handover procedure, the MS sends an HO ACC message to the BTS where the
target cell is located after receiving an HO CMD message. The BTS notifies the BSC of this
message through an HO DETECT message. If the source cell and the target cell belong to
different BTSs, the BTS where the target cell is located sends a PHY INFO message to the
MS. The MS returns a FIRST SABM frame and sends an EST IND message from the target
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cell to the BSC. The MS also sends an HO CMP message to the BSC. After receiving this
message, the BSC measures R4430B: Completed Handovers (SDCCH) in the TRX where the
target SDCCH is located.
In the TCH handover procedure, the MS sends an HO ACC message to the BTS where the
target cell is located after receiving an HO CMD message. The BTS notifies the BSC of this
message through an HO DETECT message. If the source cell and the target cell belong to
different BTSs, the BTS where the target cell is located sends a PHY INFO message to the
MS. The MS returns a FIRST SABM frame and sends an EST IND message from the target
cell to the BSC. The MS also sends an HO CMP message to the BSC. After receiving this
message, the BSC measures R4439B: Completed Handovers (TCH) in the TRX where the
target TCH is located.
In the immediate assignment procedure, the BSC receives from the BTS a CHAN ACTIV
ACK message, indicating that the channel is successfully activated. The BSC sends an IMM
ASS CMD message, requesting the MS to access the specified channel. This channel can be
an SDCCH or a TCH. CR440A: Attempted Immediate Assignments is used to measure the
IMM ASS CMD messages received on all the channels of a TRX.
In the immediate assignment procedure, an MS reports a FIRST SABM frame to the BTS on
the TCH after seizing the assigned channel. Through this frame, the MS notifies the BTS that
the radio link layer has entered multiframe link setup state. The BTS returns a UA frame to
the MS and sends the BSC an EST IND message to notify the BSC that the link is established
on the Um interface. The channel can be an SDCCH or a TCH. CR440B: Successful
Immediate Assignment Procedures is used to measure the EST IND messages received on all
the channels of a TRX.
In a handover procedure, the BSC sends an HO CMD message from the source cell to the MS
after receiving a CHAN ACTIV ACK message from the target cell. The handover can be an
SDCCH handover or a TCH handover. CR443A: Attempted Handovers is used to measure the
Handover CMD messages received on all the channels of a TRX.
In a handover procedure, the MS sends an HO ACC message to the BTS where the target cell
is located after receiving an HO CMD message. The BTS notifies the BSC of this message
through an HO DETECT message. If the source cell and the target cell belong to different
BTSs, the BTS where the target cell is located sends a PHY INFO message to the MS. The
MS returns a FIRST SABM frame and sends an EST IND message from the target cell to the
BSC. The MS also sends an HO CMP message to the BSC. CR443B: Completed Handovers
is used to measure the Handover CMP received on all the channels of a TRX.
Trigger Point
For the trigger points of the counters, see the flow charts in Immediate Assignment
Measurement per Cell, Assignment Measurement per Cell, Intra-Cell Handover Measurement
per Cell, Incoming Internal Inter-Cell Handover Measurement per Cell, Outgoing Internal
Inter-Cell Handover Measurement per Cell, Incoming External Inter-Cell Handover
Measurement per Cell, Outgoing External Inter-Cell Handover Measurement per Cell,
Incoming Inter-RAT Inter-Cell Handover Measurement per Cell, and Outgoing Inter-RAT
Inter-Cell Handover Measurement per Cell.
Formula
Attempted Immediate Assignments =
[Attempted Immediate Assignments (SDCCH)] +
[Attempted Immediate Assignments (TCH)]
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Successful Immediate Assignment Procedures =
[Successful Immediate Assignments (SDCCH)] +
[Attempted Immediate Assignment Procedures (TCH)]
Attempted Handovers =
[Attempted Handovers (SDCCH)] +
[Attempted Handovers (TCH)]
Completed Handovers =
[Completed Handovers (SDCCH)] +
[Completed Handovers (TCH)]
11.8 Immediate Assignment Measurement per Cell
11.8.1 Overview
When an MS requires network services for reasons such as Mobile Originated Call (MOC),
Mobile Terminated Call (MTC), emergency call, call re-establishment, location updating,
packet call, and Location Measurement Unit (LMU)+Reserved, it sends the BTS a CHAN
REQ message on the RACH. After receiving this message, the BTS reports a CHAN RQD
message to the BSC.
After receiving the CHAN RQD message, the BSC assigns and activates a signaling channel
to the MS. If the BSC receives a CHAN ACTIV ACK message from the BTS, the signaling
channel is ready for the assignment. The BSC sends an IMM ASS CMD message, requesting
the MS to access the specified signaling channel. This signaling channel can be an SDCCH or
a TCH.
After receiving a FIRST SABM frame from the MS, the BTS sends an EST IND message to
the BSC.
After receiving the EST IND message that carries an MM message (CM SERV REQ message,
LOC UPD REQ message, IMSI DTCH message, PAG RSP message, CM RE-EST REQ
message), the BSC requests the MSC to establish the A interface connection and transparently
transmits the MM message to the MSC.
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Figure 11-1 shows the immediate assignment procedure.
Figure 11-1 Immediate assignment procedure
MS
BTS
BSC
CHAN REQ
CHAN RQD
CHAN ACTIV
A
CHAN ACTIV ACK
IMM ASS CMD
EST IND
B
C
Table 11-13 lists the counter classification of Immediate Assignment Measurement per Cell.
Table 11-13 Counter classification of Immediate Assignment Measurement per Cell
Counter Classification
Section
Channel Requests per Cell
11.8.2
Immediate Assignment Commands per Cell
11.8.3
Call Setup Indications per Cell
11.8.4
Rejects to Service Requests per Cell
11.8.5
Immediate Assignment Analyzed Measurement per Cell
11.8.6
11.8.2 Channel Requests per Cell
Counter
Table 11-14 lists the counters of Channel Requests per Cell.
Table 11-14 Counters of Channel Requests per Cell
11-46
Number
Counter
1
A300A: Channel Requests (MOC)
2
A300C: Channel Requests (MTC)
3
A300D: Channel Requests (Emergency Call)
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Counter
4
A300E: Channel Requests (Call Re-establishment)
5
A300F: Channel Requests (Location Updating)
6
A300H: Channel Requests (Packet Call)
7
A300I: Channel Requests (LMU+Reserved)
11 Call Measurement
Meaning
When an MS requires network services, it sends the BTS a CHAN REQ message on the
RACH. After receiving this message, the BTS reports a CHAN RQD message to the BSC for
a dedicated channel. The counters measure channel access due to different causes.
Trigger Point
As shown in Figure 11-1 (A), the measurement is triggered when the BSC receives a CHAN
RQD message from the BTS where the target cell is located. The measurement is based on the
access cause.
Formula
None.
11.8.3 Immediate Assignment Commands per Cell
Counter
Table 11-15 lists the counters of Immediate Assignment Commands per Cell.
Table 11-15 Counters of Immediate Assignment Commands per Cell
Number
Counter
1
A3010: Immediate Assignment Commands (SDCCH)
2
A3017: Immediate Assignment Commands (TCHF)
3
A3018: Immediate Assignment Commands (TCHH)
4
A301H: Immediate Assignment Commands (Packet Service)
5
A302J: Rejects to Immediate Assignments (Circuit Service)
6
A302H: Rejects to Immediate Assignments (Packet Service)
Meaning
In the immediate assignment procedure, the BSC sends the MS an IMM ASS CMD message
after receiving a CHAN ACTIV ACK message from the BTS. Through this message, the BSC
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notifies the MS to access the specified signaling channel. The signaling channel can be an
SDCCH, TCHF, or TCHH. The access cause is circuit services or packet services.
After receiving a CHAN RQD message from the BTS, the BSC sends the MS an IMM ASS
REJ message if there is no channel available, the channel activation fails, or the channel
activation timed out. The immediate assignment fails.
Trigger Point
Figure 11-2 shows the trigger points of the counters of Immediate Assignment Commands per
Cell.
Figure 11-2 trigger points of the counters of Immediate Assignment Commands per Cell
MS
BTS
BSC
CHAN REQ
CHAN RQD
IMM ASS REJ
CHAN ACTIV
A
CHAN ACTIV NACK
IMM ASS REJ
TIME OUT
B
IMM ASS REJ
C
As shown in Figure 11-1 (B), the measurement related to immediate assignment commands is
triggered when the BSC sends an IMM ASS CMD message to an MS in the target cell. The
measurement is based on the channel type and the access cause.
As shown in Figure 11-2 (A), (B), and (C), the BSC sends an IMM ASS REJ message to an
MS in the target cell. If the access cause is packet services, the BSC measures Rejects to
Immediate Assignments (Packet Service). If the access cause is not packet services, the BSC
measures Rejects to Immediate Assignments (Circuit Service).
The descriptions of trigger points A, B, and C are as follows:
z
Trigger point A means that the immediate assignment is rejected because there are no
available channels.
z
Trigger point B means that the immediate assignment is rejected because the channel
activation fails.
z
Trigger point C means that the immediate assignment is rejected because the channel
activation timed out.
Formula
None.
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11.8.4 Call Setup Indications per Cell
Counter
Table 11-16 lists the counters of Call Setup Indications.
Table 11-16 Counters of Call Setup Indications
Number
Counter
1
A3030A: Call Setup Indications (MOC Non SMS) (SDCCH)
2
A3030B: Call Setup Indications (MOC SMS) (SDCCH)
3
A3030C: Call Setup Indications (MTC) (SDCCH)
4
A3030D: Call Setup Indications (Emergency Call) (SDCCH)
5
A3030E: Call Setup Indications (Call Re-establishment) (SDCCH)
6
A3030F: Call Setup Indications (Location Updating) (SDCCH)
7
A3030G: Call Setup Indications (IMSI Detach) (SDCCH)
8
A3030H: Call Setup Indications (Packet Service) (SDCCH)
9
A3030I: Call Setup Indications (SS) (SDCCH)
10
A3030J: Call Setup Indications (LCS) (SDCCH)
11
A3030K: Call Setup Indications (Others) (SDCCH)
12
A3037A: Call Setup Indications (MOC Non SMS) (TCHF)
13
A3037B: Call Setup Indications (MOC SMS) (TCHF)
14
A3037C: Call Setup Indications (MTC) (TCHF)
15
A3037D: Call Setup Indications (Emergency Call) (TCHF)
16
A3037E: Call Setup Indications (Call Re-establishment) (TCHF)
17
A3037G: Call Setup Indications (IMSI Detach) (TCHF)
18
A3037H: Call Setup Indications (Packet Service) (TCHF)
19
A3037I: Call Setup Indications (SS) (TCHF)
20
A3037J: Call Setup Indications (LCS) (TCHF)
21
A3037K: Call Setup Indications (Others) (TCHF)
22
A3038A: Call Setup Indications (MOC Non SMS) (TCHH)
23
A3038C: Call Setup Indications (MTC) (TCHH)
24
A3038E: Call Setup Indications (Call Re-establishment) (TCHH)
25
A3038H: Call Setup Indications (Packet Service) (TCHH)
26
A3038I: Call Setup Indications (SS) (TCHH)
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Number
Counter
27
A3038J: Call Setup Indications (LCS) (TCHH)
28
A3038K: Call Setup Indications (Others) (TCHH)
29
A3040: Call Setup Indications Timed Out (SDCCH)
30
A3047: Call Setup Indications Timed Out (TCHF)
31
A3048: Call Setup Indications Timed Out (TCHH)
Meaning
In the immediate assignment procedure, an MS reports a FIRST SABM frame to the BTS on
the seized signaling channel (SDCCH, TCHF, or TCHH). Through this frame, the MS notifies
the BTS that the radio link layer has entered the multiframe link setup state. The BTS returns
a UA frame to the MS and sends the BSC an EST IND message to notify the BSC that the
link is established on the Um interface.
In the immediate assignment procedure, the BSC sends an IMM ASS CMD message to an MS
and triggers a timer. If no EST IND message is received within scheduled time (10 seconds by
default), the BSC measures the counters related to the timeout of call setup indications.
Trigger Point
As shown in Figure 11-1 (C), the measurement related to call setup indications is triggered
when the BSC receives an EST IND message from the BTS where the target cell is located.
This measurement is based on the channel type and the value of the service request message.
As shown in Figure 11-3 (A), the BSC sends an IMM ASS CMD message in the target cell.
The measurement related to the timeout of call setup indications is triggered if no EST IND
message is received within scheduled time. This measurement is based on the channel type.
Figure 11-3 Trigger points of the counters of Call Setup Indications
MS
BTS
BSC
CHAN REQ
CHAN RQD
CHAN ACTIV
CHAN ACTIV ACK
IMM ASS CMD
TIME OUT
A
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Formula
None.
11.8.5 Rejects to Service Requests per Cell
Counter
Table 11-17 lists the counters of Rejects to Service Requests per Cell.
Table 11-17 Counter of Rejects to Service Requests per Cell
Number
Counter
1
A3050: Rejects to Service Requests (Congestion)
2
A3051: Rejects to Service Requests (Network Failure)
3
A3052: Rejects to Service Requests (Illegal MS)
4
A3053: Rejects to Service Requests (Other Causes)
Meaning
In the immediate assignment procedure where an MS requests for connection setup, the MS
establishes an RR connection with the BSS first, and then sends a CM SERV REQ message
on the MM layer. The BSS transparently transmits this message to the NSS. If the NSS does
not support or cannot respond to the service request due to congestion, network failure, illegal
MS or other causes, the MSC sends a CM SERV REJ message to the MS and the BSC
transparently transmits this message.
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Trigger Point
As shown in Figure 11-4 (A), the measurement is triggered when the BSC receives a CM
SERV REJ message that is sent from the MSC to an MS in the target cell. The measurement is
based on the reject cause.
Figure 11-4 Trigger points of the counters of Rejects to Service Requests per Cell
MS
BTS
BSC
MSC
CHAN REQ
CHAN RQD
CHAN ACTIV
CHAN ACTIV ACK
IMM ASS CMD
EST IND
CR
CC
CM SERV REJ
A
Formula
None.
11.8.6 Immediate Assignment Analyzed Measurement per Cell
Counter
Table 11-18 lists the counters of Immediate Assignment Analyzed Measurement per Cell.
Table 11-18 Counters of Immediate Assignment Analyzed Measurement per Cell
11-52
Number
Counter
1
CA300J: Channel Requests (Circuit Service)
2
CA303J: Call Setup Indications (Circuit Service)
3
CA3030J: Call Setup Indications (SDCCH) (Circuit Service)
4
CA3039J: Call Setup Indications (TCH) (Circuit Service)
5
RA301G: Success Rate of Immediate Assignment
6
CA301J: Immediate Assignment Commands (Circuit Service)
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Number
Counter
7
CA303H: Call Setup Indications (Packet Service)
8
CA304: Call Setup Indications Timed Out
9
CA305: Rejects to Service Requests
10
RA303G: Success Rate of Call Setup (Immediate Assignment)
Meaning
None.
Trigger Point
None.
Formula
Channel Requests (Circuit Service) =
[Channel Requests (MOC)] +
[Channel Requests (MTC)] +
[Channel Requests (Emergency Call)] +
[Channel Requests (Call Re-establishment)] +
[Channel Requests (Location Updating)]
Call Setup Indications (Circuit Service) =
[Call Setup Indications (SDCCH) (Circuit Service)] +
[Call Setup Indications (TCH) (Circuit Service)]
Call Setup Indications (SDCCH) (Circuit Service) =
[Call Setup Indications (MOC Non SMS) (SDCCH)] +
[Call Setup Indications (MOC SMS) (SDCCH)] +
[Call Setup Indications (MTC) (SDCCH)] +
[Call Setup Indications (Emergency Call) (SDCCH)] +
[Call Setup Indications (Call Re-establishment) (SDCCH)] +
[Call Setup Indications (Location Updating) (SDCCH)] +
[Call Setup Indications (IMSI Detach) (SDCCH)]
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Call Setup Indications (TCH) (Circuit Service) =
[Call Setup Indications (MOC Non SMS) (TCHF)] +
[Call Setup Indications (MOC SMS) (TCHF)] +
[Call Setup Indications (MTC) (TCHF)] +
[Call Setup Indications (Emergency Call) (TCHF)] +
[Call Setup Indications (Call Re-establishment) (TCHF)] +
[Call Setup Indications (IMSI Detach) (TCHF)] +
[Call Setup Indications (MOC Non SMS) (TCHH)] +
[Call Setup Indications (MTC) (TCHH)] +
[Call Setup Indications (Call Re-establishment) (TCHH)]
Success Rate of Immediate Assignment =
[Immediate Assignment Commands (Circuit Service)]*{100}/[Channel Requests (Circuit
Service)]
Immediate Assignment Commands (Circuit Service) =
[Immediate Assignment Commands (SDCCH)] +
[Immediate Assignment Commands (TCHF)] +
[Immediate Assignment Commands (TCHH)]
Call Setup Indications (Packet Service) =
[Call Setup Indications (Packet Service) (SDCCH)] +
[Call Setup Indications (Packet Service) (TCHF)] +
[Call Setup Indications (Packet Service) (TCHH)]
Call Setup Indications Timed Out =
[Call Setup Indications Timed Out (SDCCH)] +
[Call Setup Indications Timed Out (TCHF)] +
[Call Setup Indications Timed Out (TCHH)]
Rejects to Service Requests =
[Rejects to Service Requests (Congestion)] +
[Rejects to Service Requests (Network Failure)] +
[Rejects to Service Requests (Illegal MS)] +
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[Rejects to Service Requests (Other Causes)]
Success Rate of Call Setup (Immediate Assignment) =
[Call Setup Indications (Circuit Service)]*{100}/[Channel Requests (Circuit Service)]
11.9 Assignment Measurement per Cell
11.9.1 Overview
Table 11-19 lists the counter classification of Assignment Measurement per Cell.
Table 11-19 Counter classification of Assignment Measurement per Cell
Counter Classification
Section
Assignment Requests per Cell
11.9.2
Assignment Commands per Cell
11.9.3
Completed Assignments per Cell
11.9.4
Failed Assignments per Cell
11.9.5
Mode Modify Commands per Cell
11.9.6
Failed Mode Modify Attempts per Cell
11.9.7
Assignment Procedure Analyzed Measurement per Cell
11.9.8
11.9.2 Assignment Requests per Cell
Counter
Table 11-20 lists the counters of Assignment Requests per Cell.
Table 11-20 Counters of Assignment Requests per Cell
Number
Counter
1
A3100A: Assignment Requests (Signaling Channel)
2
A3100B: Assignment Requests (TCHF Only)
3
A3100C: Assignment Requests (TCHH Only)
4
A3100D: Assignment Requests (TCHF Preferred, Channel Type
Unchangeable)
5
A3100E: Assignment Requests (TCHH Preferred, Channel Type
Unchangeable)
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Number
Counter
6
A3100F: Assignment Requests (TCHF or TCHH, Channel Type
Unchangeable)
7
A3100G: Assignment Requests (TCHF Preferred, Channel Type Changeable)
8
A3100H: Assignment Requests (TCHH Preferred, Channel Type Changeable)
9
A3100I: Assignment Requests (TCHF or TCHH, Channel Type Changeable)
10
A3101A: Assignment Requests (MOC)
11
A3101C: Assignment Requests (MTC)
12
A3101D: Assignment Requests (Emergency Call)
13
A3101E: Assignment Requests (Call Re-establishment)
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Meaning
The counters measure the ASS REQ messages received by the BSC from the MSC in the
assignment procedure. The message specifies the signaling type or service type. If the service
type (speech or data) is different, the channel assigned by the MSC is also different.
When the channel assigned by the MSC is used for speech services, the assigned channel is of the
following types:
z
Full rate TCH channel Bm
z
Half rate TCH channel Lm
z
Full or Half rate TCH channel, Full rate preferred, changes between full rate and half rate allowed
also after first channel allocation as a result of the request
z
Full or half rate TCH channel, half rate preferred, changes between full rate and half rate allowed
also after first channel allocation as a result of the request
z
Full or half rate TCH channel, full rate preferred, changes between full rate and half rate not allowed
after first channel allocation as a result of the request
z
Full or half rate TCH channel, half rate preferred, changes between full rate and half rate not allowed
after first channel allocation as a result of the request
z
Full or half rate TCH channel, changes between full and half rate allowed also after first channel
allocation as a result of the request
z
Full or half rate TCH channel, changes between full and half rate not allowed after first channel
allocation as a result of the request
Huawei BSC supports all of the eight channel types.
When the channel assigned by the MSC is used for data services, the assigned channel is of the
following types:
z
Full rate TCH channel Bm
z
Half rate TCH channel Lm
z
Full or half rate TCH channel, full rate preferred, changes between full rate and half rate allowed
also after first channel allocation as a result of the request
z
Full or half rate TCH channel, half rate preferred, changes between full rate and half rate allowed
also after first channel allocation as a result of the request
z
Full or half rate TCH channel, full rate preferred, changes between full rate and half rate not allowed
after first channel allocation as a result of the request
z
Full or Half rate TCH channel. Half rate preferred, changes between full rate and half rate not
allowed after first channel allocation as a result of the request
z
Full rate TCH channels in a multislot configuration, changes by the BSS of the number of TCHs and
if applicable the used radio interface rate per channel allowed after first channel allocation as a result
of the request
z
Full rate TCH channels in a multislot configuration, changes by the BSS of the number of TCHs or
the used radio interface rate per channel not allowed after first channel allocation as a result of the
request
Huawei BSC supports the first six channel types.
Trigger Point
In the immediate assignment procedure, the BSS assigns a signaling channel to an MS. After
the RR connection between the MS and the BSS is established, the MS establishes the MM
and the CC connections with the MSC through the signaling channel. Based on the CC
connection request from the MS, the MSC assigns terrestrial resources to the MS and
specifies available channel types in an ASS REQ message.
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The measurement is triggered when the BSC receives an ASS REQ message from the MSC,
as shown in Figure 11-5 (A). The measurement is based on the channel type and the access
cause carried in the message.
Figure 11-5 Trigger point of the counters of Assignment Requests per Cell
MS
MSC
BSC
BTS
CHAN REQ
CHAN RQD
CHAN ACTIV
CHAN ACTIV ACK
IMM ASS CMD
SABM
UA
EST IND
CR(CMP L3 INFO)
CC
CM SERV ACP
SETUP
CALL PROCEEDING
ASS REQ
A
Formula
None.
11.9.3 Assignment Commands per Cell
Counter
Table 11-21 lists the counters of Assignment Commands per Cell.
Table 11-21 Counters of Assignment Commands per Cell
11-58
Number
Counter
1
A3117A: Assignment Commands (MOC) (TCHF) (Excluding Directed Retry)
2
A3117C: Assignment Commands (MTC) (TCHF) (Excluding Directed Retry)
3
A3117D: Assignment Commands (Emergency Call) (TCHF) (Excluding
Directed Retry)
4
A3117E: Assignment Commands (Call Re-establishment) (TCHF) (Excluding
Directed Retry)
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Number
Counter
5
A3118A: Assignment Commands (MOC) (TCHH) (Excluding Directed Retry)
6
A3118C: Assignment Commands (MTC) (TCHH) (Excluding Directed Retry)
7
A3118D: Assignment Commands (Emergency Call) (TCHH) (Excluding
Directed Retry)
8
A3118E: Assignment Commands (Call Re-establishment) (TCHH) (Excluding
Directed Retry)
Meaning
This counter measures the number of times the BSC sends an ASS CMD message to an MS.
Trigger Point
In the assignment procedure, the BSC assigns a TCH to an MS (In the signaling traffic
assignment, the BSC returns an assignment complete message to the MSC and assigns no
signaling channel). After the channel is activated, the BSC sends an ASS CMD message to the
MSC.
As shown in Figure 11-6 (B), the measurement is triggered when the BSC sends an ASS
CMD message to the MSC. The measurement is based on channel types and call access
causes.
Figure 11-6 Trigger Point of the counters of Assignment Commands per Cell
MS
BTS
BSC
MSC
ASS REQ
CHAN ACTIV
CHAN ACTIV ACK
ASS CMD
B
Formula
None.
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11.9.4 Completed Assignments per Cell
Counter
Table 11-22 lists the counters of Completed Assignments per Cell.
Table 11-22 Counters of Completed Assignments per Cell
Number
Counter
1
A3167A: Speech Version 1 Completed Assignments (Excluding Directed
Retry) (TCHF)
2
A3167B: Speech Version 2 Completed Assignments (Excluding Directed
Retry) (TCHF)
3
A3167C: Speech Version 3 Completed Assignments (Excluding Directed
Retry) (TCHF)
4
A3168A: Speech Version 1 Completed Assignments (Excluding Directed
Retry) (TCHH)
5
A3168B: Speech Version 2 Completed Assignments (Excluding Directed
Retry) (TCHH)
6
A3168C: Speech Version 3 Completed Assignments (Excluding Directed
Retry) (TCHH)
Meaning
The counters measure the following:
z
Number of times the MS sends an ASS CMP message to the BSC in the assignment
procedure
z
Number of times the calls use a certain speech version when the MS sends an ASS CMP
message to the BSC in the assignment procedure
z
Number of times the MS sends an HO CMP message to the BSC in the directed retry
procedure
Trigger Point
The assignment procedure is initiated after the BSC receives an ASS REQ message from the
MSC. The BSC sends an ASS CMD message to the MS. If a full rate TCH or half rate TCH is
successfully assigned to the MS during the first assignment, the MS reports an ASS CMP
message to the BSC. The BSC receives this message and forwards it to the MSC.
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As shown in Figure 11-7 (C), the measurement of completed assignments (first assignment of
a TCHF or a TCHH) is triggered when the BSC receives an ASS CMP message.
Figure 11-7 Trigger points of the counters of Completed Assignments per Cell
MS
BSC
BTS
MSC
ASS REQ
CHAN ACTIV
CHAN ACTIV ACK
ASS CMD
SABM
UA
EST IND
ASS CMP
C
ASS CMP
When the BSC receives an ASS REQ message from the MSC, it initiates an assignment
procedure. If the first assignment fails, the MS sends an ASS FAIL message to the BSC and
the BSC initiates the re-assignment procedure. If a full rate TCH or half rate TCH is
successfully assigned to the MS, the MS sends an ASS CMP message to the BSC. The
measurement of completed assignments (re-assignment of a TCHF or a TCHH) is triggered
when the BSC receives the ASS CMP message. The BSC sends the ASS CMP message to the
MSC at the same time.
Formula
None.
11.9.5 Failed Assignments per Cell
Counter
Table 11-23 lists the counters of Failed Assignments per Cell.
Table 11-23 Counters of Failed Assignments per Cell
Number
Counter
1
A3127A: Failed Assignments (MOC) (TCHF) (Excluding Directed Retry)
2
A3127C: Failed Assignments (MTC) (TCHF) (Excluding Directed Retry)
3
A3127D: Failed Assignments (Emergency Call) (TCHF) (Excluding
Directed Retry)
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Number
Counter
4
A3127E: Failed Assignments (Call Re-establishment) (TCHF) (Excluding
Directed Retry)
5
A3128A: Failed Assignments (MOC) (TCHH) (Excluding Directed Retry)
6
A3128C: Failed Assignments (MTC) (TCHH) (Excluding Directed Retry)
7
A3128D: Failed Assignments (Emergency Call) (TCHH) (Excluding
Directed Retry)
8
A3128E: Failed Assignments (Call Re-establishment) (TCHH) (Excluding
Directed Retry)
9
A312Aa: Failed Assignments (MOC) (Including Directed Retry)
10
A312Ca: Failed Assignments (MTC) (Including Directed Retry)
11
A312Da: Failed Assignments (Emergency Call) (Including Directed Retry)
12
A312Ea: Failed Assignments (Call Re-establishment) (Including Directed
Retry)
13
A312A: Failed Assignments (Signaling Channel)
14
A3129I: Failed Assignments (Invalid State)
15
A3129J: Failed Assignments (Invalid Message)
16
A3129E: Failed Assignments (CIC Unavailable)
17
A3129F: Failed Assignments (CIC Allocated)
18
A3129G: Failed Assignments (A-Interface Failure)
19
A3129H: Failed Assignments (Clear Commands Sent by MSC)
20
A312A: Failed Assignments (First Assignment, Channel Unavailable in
Assignment Procedure)
21
A3129C: Failed Assignments (First Assignment, Assignment Timed Out)
22
A312K: Failed Assignments (First Assignment, Channel Unavailable in
Directed Retry Procedure)
23
A3129O: Failed Assignments (First Assignment, Directed Retry Timed Out)
24
A3129B: Failed Assignments (First Assignment, Terrestrial Resource
Request Failed)
25
A312L: Failed Assignments (Reconnection to Old Channels, Channel
Unavailable in Assignment)
26
A3129D: Failed Assignments (Reconnection to Old Channels, Reconnection
to Old Channel in Assignment)
27
A3129P: Failed Assignments (Reconnection to Old Channels, Timer Expired
in Assignment)
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Number
Counter
28
A312M: Failed Assignments (Reconnection to Old Channels, Channel
Unavailable in Directed Retry)
29
A3129R: Failed Assignments (Reconnection to Old Channels, Reconnection
to Old Channel in Directed Retry)
30
A3129Q: Failed Assignments (Reconnection to Old Channels, Timer Expired
in Directed Retry)
31
A3129N: Failed Assignments (Reconnection to Old Channels, Terrestrial
Resource Request Failed)
Meaning
The counters measure the number of failed assignments due to different causes.
In the assignment procedure, the MSC sends an ASS REQ message to the BSS. The BSS
selects a traffic channel or signaling channel. The assignment may fail due to various causes.
An assignment may fail due to any of the following causes:
z
The BSS detects that there are no traffic channels or signaling channels available and sends an ASS
FAIL message to the MSC.
z
The MS sends an ASS FAIL message to the BSS directly.
z
No ASS CMP message is received within scheduled time after the BSS receives an ASS REQ
message from the MSC.
z
The BSS determines that the message is in invalid state.
z
The BSS receives an invalid message.
z
The request for terrestrial resources fails.
z
The CIC is unavailable or is already allocated.
z
A failure occurs on the A interface.
z
The MSC sends a clear command.
Trigger Point
If the MSC receives no ASS CMP message after sending an ASS REQ message to the BSS,
the measurement of Failed Assignments per Cell is triggered. The BSS sends an ASS FAIL
message to the MSC. The measurement is based on the failure cause, procedure, and assigned
channel type.
z
In the assignment procedure (including or excluding directed retry), the related
measurement is triggered when the assignment procedure fails. The measurement is
based on the access cause and the assigned channel type.
z
In the assignment procedure, the measurement of Failed Assignments (Invalid State) is
triggered when the BSC detects that the status of the received message does not match
the current procedure.
z
In the assignment procedure, the related measurement is triggered when the BSC detects
that errors occur in the decoding of the received ASS REQ message. The errors may be
of the channel type, CIC, and layer 3 header information.
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z
After the BSC receives an ASS REQ message from the MSC, the measurement of Failed
Assignments (First Assignment, Terrestrial Resource Request Failed) is triggered when
the BSC fails to request the terrestrial resources specified in the message.
z
In the assignment procedure, the related measurement is triggered when the BSC detects
that the CIC carried in the received ASS REQ message is unavailable or is already
allocated.
z
In the assignment procedure after the A interface link is established, the MSC sends an
ASS REQ message to the BSC. The measurement of Failed Assignments (A-Interface
Failure) is triggered when the MSC sends a CLEAR CMD message or a DISCONNECT
message to the BSC because errors occur on the A interface.
z
In the assignment procedure, the MSC sends an ASS REQ message to the BSC. The
measurement of Failed Assignments (Clear Commands Sent by MSC) is triggered when
the MSC sends a CLEAR CMD message before the BSC responds to the ASS REQ
message.
z
In the first assignment, directed retry, re-assignment, or re-assignment directed retry
procedure, the related measurement is triggered when the BSC detects that there are no
available channel resources.
z
In the first assignment or the directed retry procedure, the BSC sends an ASS CMD
message, and then triggers an assignment timer. The related measurement is triggered
when the timer expires.
z
In the assignment procedure, the BSC receives an ASS REQ message from the MSC. If
the first assignment fails, the MS reconnects to the old channel and sends an ASS FAIL
message to the BSC. The BSC then initiates the two procedures described previously and
the measurement is triggered when the assignment fails.
Formula
None.
11.9.6 Mode Modify Commands per Cell
Counter
Table 11-24 lists the counters of Mode Modify Commands per Cell.
Table 11-24 Counters of Mode Modify Commands per Cell
11-64
Number
Counter
1
A3147A: Mode Modify Commands (MOC) (TCHF)
2
A3147C: Mode Modify Commands (MTC) (TCHF)
3
A3147D: Mode Modify Commands (Emergency Call) (TCHF)
4
A3147E: Mode Modify Commands (Call Re-establishment) (TCHF)
5
A3148A: Mode Modify Commands (MOC) (TCHH)
6
A3148C: Mode Modify Commands (MTC) (TCHH)
7
A3148E: Mode Modify Commands (Call Re-establishment) (TCHH)
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Meaning
In the immediate assignment procedure, if there are no idle SDCCHs but idle TCHs to be
assigned and if the immediate assignment of TCHs is allowed, the assigned full rate or half
rate TCH is used as a signaling channel. There is no need to assign a TCH during the
assignment. The assigned full rate or half rate TCH is converted to a speech channel through a
Mode Modify procedure.
The counters measure the number of times the BSC sends a CHAN MODE MODIFY
message to the MS after receiving the MODE MODIFY ACK message from the BTS.
Together with Completed Mode Modify Procedures (TCH), the counters can be used to
calculate the success rate of Mode Modify procedures.
Trigger Point
As shown in Figure 11-8 (E1), after receiving the ASS REQ message from the MSC, the BSC
checks the CHANNEL TYPE carried in the message and initiates the Mode Modify procedure
if the CHANNEL TYPE and the type of the channel assigned in the assignment procedure
meet either of the following conditions:
z
Same type of channel rate, different speech data indications
z
Same type of channel rate and speech data indication, different speech coding algorithms
or data transparent transmission indications
If the Mode Modify procedure is performed in the assignment procedure, the BSC sends a
MODE MODIFY message to the BTS. After receiving a MODE MODIFY ACK message
from the BTS, the BSC sends a CHAN MODE MODIFY message to the MS.
The measurement is triggered when the BSC sends a CHAN MODE MODIFY message to the
MS.
Figure 11-8 Trigger points of the counters of Mode Modify Commands per Cell
MS
BSC
BTS
MSC
ASS REQ
MODE MODIFY
MODE MODIFY ACK
CHANMODE MODIFY
E1
CHANMODE MODIFY ACK
E2
ASS CMP
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Formula
None.
11.9.7 Failed Mode Modify Attempts per Cell
Counter
Table 11-25 lists the counters of Failed Mode Modify Attempts per Cell.
Table 11-25 Counters of Failed Mode Modify Attempts per Cell
Number
Counter
1
A3157A: Failed Mode Modify Attempts (MOC) (TCHF)
2
A3157C: Failed Mode Modify Attempts (MTC) (TCHF)
3
A3157D: Failed Mode Modify Attempts (Emergency Call) (TCHF)
4
A3157E: Failed Mode Modify Attempts (Call Re-establishment) (TCHF)
5
A3158A: Failed Mode Modify Attempts (MOC) (TCHH)
6
A3158C: Failed Mode Modify Attempts (MTC) (TCHH)
7
A3158E: Failed Mode Modify Attempts (Call Re-establishment) (TCHH)
8
A3159E: Failed Mode Modify Attempts (CIC Unavailable)
9
A3159F: Failed Mode Modify Attempts (CIC Allocated)
10
A3159B: Failed Mode Modify Attempts (Terrestrial Resource Request
Failed)
11
A3159G: Failed Mode Modify Attempts (A-Interface Failure)
12
A3159H: Failed Mode Modify Attempts (Clear Commands Sent by MSC)
13
A3159C: Failed Mode Modify Attempts (Timer Expired)
Meaning
The counters measure the number of times the assignment fails after the BSC sends a MODE
MODIFY message to the MS.
Trigger Point
If the Mode Modify procedure is performed in the assignment procedure but the TCH
assignment fails due to various causes, the measurement of Failed Mode Modify Attempts per
Cell is triggered.
z
11-66
As shown in Figure 11-9 (F), after the BSC receives an ASS REQ message from the
MSC, the measurement of Failed Mode Modify Attempts (Terrestrial Resource Request
Failed) is triggered when the request for terrestrial resources fails.
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z
As shown in Figure 11-9 (G), after the BSC receives an ASS REQ message from the
MSC in the Mode Modify procedure, the related measurement is triggered when the BSC
detects that the CIC is unavailable or is already allocated.
z
After the A interface link is established, the MSC sends an ASS REQ message to the
BSC. In the Mode Modify procedure, the measurement of Failed Mode Modify Attempts
(A-Interface Failure) is triggered when the MSC sends a CLEAR CMD message or a
DISCONNECT message to the BSC because errors occur on the A interface.
z
In the Mode Modify procedure, the MSC sends an ASS REQ message to the BSC. The
measurement of Failed Mode Modify Attempts (Clear Commands Sent by MSC) is
triggered when the MSC sends a CLEAR CMD message before the BSC responds to the
ASS REQ message.
z
As shown in Figure 11-9 (H), the BSC sends a CHAN MODE MODIFY message in the
Mode Modify procedure, and then triggers an assignment timer. The related
measurement is triggered when the BSC receives a CHAN MODE MODIFY NACK
message or when the timer expires.
Figure 11-9 Trigger points of the counters of Failed Mode Modify Attempts per Cell
MS
BSC
BTS
MSC
ASS REQ
MODE MODIFY
F
MODE MODIFY ACK
(MODE MODIFY NACK)
CHAN MODE MODIFY
G
CHAN MODE MODIFY NACK
H
ASS FAIL
Formula
None.
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11.9.8 Assignment Procedure Analyzed Measurement per Cell
Counter
Table 11-26 lists the counters of Assignment Procedure Analyzed Measurement per Cell.
Table 11-26 Counters of Assignment Procedure Analyzed Measurement per Cell
Number
Counter
1
CA310: Assignment Requests
2
CA313: Successful Assignments
3
RCA313: Success Rate of TCH Assignment
4
CA311: Assignment Commands
5
CA314: Mode Modify Commands
6
CA316: Completed Assignments (Um Interface)
7
CA312: Failed Assignments (Channel Unavailable)
Meaning
None.
Trigger Point
None.
Formula
Assignment Requests =
[Assignment Requests (Signaling Channel)] +
[Assignment Requests (TCHF Only)] +
[Assignment Requests (TCHH Only)] +
[Assignment Requests (TCHF Preferred, Channel Type Unchangeable)] +
[Assignment Requests (TCHH Preferred, Channel Type Unchangeable)] +
[Assignment Requests (TCHF or TCHH, Channel Type Unchangeable)] +
[Assignment Requests (TCHF Preferred, Channel Type Changeable)] +
[Assignment Requests (TCHH Preferred, Channel Type Changeable)] +
[Assignment Requests (TCHF or TCHH, Channel Type Changeable)]
Successful Assignments =
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[Assignment Requests]([Failed Assignments (Signaling Channel)] +
[Failed Assignments (MOC) (Including Directed Retry)] +
[Failed Assignments (MTC) (Including Directed Retry)] +
[Failed Assignments (Emergency Call) (Including Directed Retry)] +
[Failed Assignments (Call Re-establishment) (Including Directed Retry)] +
[Failed Mode Modify Attempts (MOC) (TCHF)] +
[Failed Mode Modify Attempts (MTC) (TCHF)] +
[Failed Mode Modify Attempts (Emergency Call) (TCHF)] +
[Failed Mode Modify Attempts (Call Re-establishment) (TCHF)] +
[Failed Mode Modify Attempts (MOC) (TCHH)] +
[Failed Mode Modify Attempts (MTC) (TCHH)] +
[Failed Mode Modify Attempts (Call Re-establishment) (TCHH)])
Success Rate of TCH Assignment =
[Successful Assignments]*{100}/[Assignment Requests]
Assignment Commands =
[Assignment Commands (MOC) (TCHF) (Excluding Directed Retry)] +
[Assignment Commands (MTC) (TCHF) (Excluding Directed Retry)] +
[Assignment Commands (Emergency Call) (TCHF) (Excluding Directed Retry)] +
[Assignment Commands (Call Re-establishment) (TCHF) (Excluding Directed Retry)] +
[Assignment Commands (MOC) (TCHH) (Excluding Directed Retry)] +
[Assignment Commands (MTC) (TCHH) (Excluding Directed Retry)] +
[Assignment Commands (Emergency Call) (TCHH) (Excluding Directed Retry)] +
[Assignment Commands (Call Re-establishment) (TCHH) (Excluding Directed Retry)]
Mode Modify Commands =
[Mode Modify Commands (MOC) (TCHF)] +
[Mode Modify Commands (MTC) (TCHF)] +
[Mode Modify Commands (Emergency Call) (TCHF)] +
[Mode Modify Commands (Call Re-establishment) (TCHF)] +
[Mode Modify Commands (MOC) (TCHH)] +
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[Mode Modify Commands (MTC) (TCHH)] +
[Mode Modify Commands (Emergency Call) (TCHH)] +
[Mode Modify Commands (Call Re-establishment) (TCHH)]
Completed Assignments (Um Interface) =
[Speech Version 1 Completed Assignments (Excluding Directed Retry) (TCHF)] +
[Speech Version 2 Completed Assignments (Excluding Directed Retry) (TCHF)] +
[Speech Version 3 Completed Assignments (Excluding Directed Retry) (TCHF)] +
[Speech Version 1 Completed Assignments (Excluding Directed Retry) (TCHH)] +
[Speech Version 2 Completed Assignments (Excluding Directed Retry) (TCHH)] +
[Speech Version 3 Completed Assignments (Excluding Directed Retry) (TCHH)]
Failed Assignments (Channel Unavailable) =
[Failed Assignments (First Assignment, Channel Unavailable in Assignment Procedure)] +
[Failed Assignments (First Assignment, Channel Unavailable in Directed Retry Procedure)] +
[Failed Assignments (Reconnection to Old Channels, Channel Unavailable in Assignment)] +
[Failed Assignments (Reconnection to Old Channels, Channel Unavailable in Directed Retry)]
11.10 Intra-Cell Handover Measurement per Cell
11.10.1 Overview
After seizing a dedicated channel, an MS sends the BSC measurement reports periodically.
After receiving the measurement reports, the BSC uses the handover algorithm to decide
whether a handover is required or not based on the measurement reports. If a handover is
required and the source cell (current cell) is also the target cell, an intra-cell handover is
initiated.
The Intra-cell handover procedure is as follows:
Step 1 The BSC sends a CHAN ACTIV message to the BTS where the target cell is located. This
message is used to activate the specified channel in the target cell.
Step 2 After receiving a CHAN ACTIV ACK message, the BSC requests for channel resources. If
the request succeeds, the BSC sends the MS an HO CMD message, requesting the MS to
initiate a handover from the source cell to the target cell.
Step 3 The MS sends the target BTS a HO ACC message to attempt to access a new cell.
Step 4 The target BTS forwards this message through an HO DETECT message to the BSC and
sends a PHY INFO message to the MS.
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Step 5 The MS sends a FIRST SABM frame to the target BTS and the target BTS sends an EST IND
message to the BSC, indicating that the MS has successfully accessed the target cell. The MS
also sends an HO CMP message to the BSC.
Step 6 The BSC sends an HO PERFORMED message to the MSC.
----End
Figure 11-10 Intra-cell handover procedure
MS
BTS1(CELLO)
BSC
BTS1(CELLO)
MS
MSC
MR FROM MS
A
CHAN ACTIV
CHAN ACTIV
ACK
HO ACC
HO CMD
B
HO DETECT
PHY INFO
FIRST SABM
EST IND
HO CMP
HO PERFORMED
A: Intra-cell handover request
B: Intra-cell handover command
Table 11-27 lists the counter classification of Intra-Cell Handover Requests per Cell.
Table 11-27 Counter classification of Intra-Cell Handover Requests per Cell
Counter Classification
Section
Intra-Cell Handover Requests per Cell
11.10.2
Intra-Cell Handover Commands per Cell
11.10.3
Failed Intra-Cell Handovers per Cell
11.10.4
Intra-Cell AMR Handover per Cell
11.10.5
Intra-Cell Handover Detection Messages Received by BSC per Cell
11.10.6
Intra-Cell Handover Measurement per Cell
11.10.7
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11.10.2 Intra-Cell Handover Requests per Cell
Counter
Table 11-28 lists the counters of Internal Intra-Cell Handover Requests per Cell.
Table 11-28 Counters of Internal Intra-Cell Handover Requests per Cell
Number
Counter
1
H3000: Internal Intra-Cell Handover Requests (SDCCH)
2
H3009: Internal Intra-Cell Handover Requests (TCH)
3
H3003A: Internal Intra-Cell Handover Requests (Dynamic Conversion,
TCHF-TCHH)
4
H3003B: Internal Intra-Cell Handover Requests (Dynamic Conversion,
TCHH-TCHF)
5
H3004A: Internal Intra-Cell Handover Requests (Dynamic Conversion,
TCH-SDCCH)
6
H3004B: Internal Intra-Cell Handover Requests (Dynamic Conversion,
SDCCH-TCH)
7
H3002: Internal Intra-Cell Handover Requests (Underlay to Overlay)
8
H3001: Internal Intra-Cell Handover Requests (Overlay to Underlay)
Meaning
The counters measure the number of intra-cell handover requests based on handover types and
channel types.
The counters show the frequency of intra-cell handovers in the current cell. Along with IntraCell Handover Commands per Cell and Failed Intra-Cell Handovers per Cell, the counters
show the performance of intra-cell handovers.
The intra-cell handover is of the following types:
z
Intra-cell handover in normal conditions
z
Intra-cell handover caused by dynamic channel conversion
z
Intra-cell handover in concentric cells
The channel involved in the measurement is of the following types:
z
SDCCH
z
TCH
The dynamic channel conversion is of the following types:
11-72
z
TCHF to TCHH (TCHF-TCHH)
z
TCHH to TCHF (TCHH-TCHF)
z
TCH to SDCCH (TCH-SDCCH)
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SDCCH to TCH (SDCCH-TCH)
The concentric cell handover is of the following types:
z
Underlaid subcell to overlaid subcell (Underlay to Overlay)
z
Overlaid subcell to underlaid subcell (Overlay to Underlay)
In the internal handover procedure, the BSC selects the idle neighbor cell (the neighbor cell in the same
BSC but different BM is assumed to be idle) as the preferred target cell. If all the neighbor cells of the
source cell are busy, the first cell on the list of candidate neighbor cells is selected. The handover is
performed even if this cell is busy. If the selected neighbor cell is also the source cell, the related counter
is measured.
In the concentric cell handover (also a kind of intra-cell handover), no handover is performed if the
target underlaid subcell or overlaid subcell is congested. No counters will be measured.
Trigger Point
As shown in Figure 11-10 (A), the measurement is triggered when the BSC decides that an
intra-cell handover is required based on measurement reports. The measurement is based on
the handover type and the channel type.
Formula
None.
11.10.3 Intra-Cell Handover Commands per Cell
Counter
Table 11-29 lists the counters of Intra-Cell Handover Commands per Cell.
Table 11-29 Counters of Intra-Cell Handover Commands per Cell
Number
Counter
1
H3010: Internal Intra-Cell Handover Commands (SDCCH)
2
H3017: Internal Intra-Cell Handover Commands (TCHF)
3
H3018: Internal Intra-Cell Handover Commands (TCHH)
4
H3013A: Internal Intra-Cell Handover Commands (Dynamic Conversion,
TCHF-TCHH)
5
H3013B: Internal Intra-Cell Handover Commands (Dynamic Conversion,
TCHH-TCHF)
6
H3014A: Internal Intra-Cell Handover Commands (Dynamic Conversion,
TCH-SDCCH)
7
H3014B: Internal Intra-Cell Handover Commands (Dynamic Conversion,
SDCCH-TCH)
8
H3012: Internal Intra-Cell Handover Commands (Underlay to Overlay)
9
H3011: Internal Intra-Cell Handover Commands (Overlay to Underlay)
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Meaning
The counters measure the number of intra-cell handover commands based on handover types
and channel types.
Along with Intra-Cell Handover Requests per Cell and Failed Intra-Cell Handovers per Cell,
the counters show the performance of intra-cell handovers.
The intra-cell handover is of the following types:
z
Intra-cell handover requests in normal conditions
z
Intra-cell handover requests caused by dynamic channel conversion
z
Intra-cell handover requests in concentric cells
The channel involved in the measurement is of the following types:
z
SDCCH
z
TCHF
z
TCHH
The dynamic channel conversion is of the following types:
z
TCHF to TCHH (TCHF-TCHH)
z
TCHH to TCHF (TCHH-TCHF)
z
TCH to SDCCH (TCH-SDCCH)
z
SDCCH to TCH (SDCCH-TCH)
The concentric cell handover is of the following types:
z
Underlaid subcell to overlaid subcell (Underlay to Overlay)
z
Overlaid subcell to underlaid subcell (Overlay to Underlay)
Trigger Point
As shown in Figure 11-10 (B), the measurement is triggered when the BSC sends an HO
CMD message through the source cell to the MS. The measurement is based on the handover
type and the channel type.
Formula
None.
11.10.4 Failed Intra-Cell Handovers per Cell
Counter
Table 11-30 lists the counters of Failed Intra-Cell Handovers per Cell.
Table 11-30 Counters of Failed Intra-Cell Handovers per Cell
11-74
Number
Counter
1
H3020: Failed Internal Intra-Cell Handovers (SDCCH)
2
H3029: Failed Internal Intra-Cell Handovers (TCH)
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Number
Counter
3
H3020A: Failed Internal Intra-Cell Handovers (Channel Unavailable)
(SDCCH)
4
H3029A: Failed Internal Intra-Cell Handovers (Channel Unavailable) (TCH)
5
H302B: Failed Internal Intra-Cell Handovers (Terrestrial Resource Request
Failed)
6
H302G: Failed Internal Intra-Cell Handovers (A-Interface Failure)
7
H3020C: Failed Internal Intra-Cell Handovers (Timer Expired) (SDCCH)
8
H3027Cb: Failed Internal Intra-Cell Handovers (Timer Expired) (TCHF)
(Signaling Channel)
9
H3028Cb: Failed Internal Intra-Cell Handovers (Timer Expired) (TCHH)
(Signaling Channel)
10
H3027Ca: Failed Internal Intra-Cell Handovers (Timer Expired) (TCHF)
(Traffic Channel)
11
H3028Ca: Failed Internal Intra-Cell Handovers (Timer Expired) (TCHH)
(Traffic Channel)
12
H302Da: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)
(Abnormal Release, Unspecified)
13
H302Db: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)
(Abnormal Release, Channel Unacceptable)
14
H302Dc: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)
(Abnormal Release, Timer Expired)
15
H302Dd: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)
(Abnormal Release, No Activity on the Radio Path)
16
H302De: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)
(Preemptive Release)
17
H302Df: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)
(Handover Failed, Timing Advance out of Range)
18
H302Dg: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)
(Channel Mode Unavailable)
19
H302Dh: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)
(Frequency Unavailable)
20
H302Di: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)
(Call Already Cleared)
21
H302Dj: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)
(Semantically Incorrect Message)
22
H302Dk: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)
(Invalid Mandatory Information)
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Number
Counter
23
H302Dl: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)
(Message Type Non-existent or Not Implemented)
24
H302Dm: Failed Internal Intra-Cell Handovers (Reconnection to Old
Channels) (Message Type Not Compatible with Protocol State)
25
H302Dn: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)
(Conditional IE Error)
26
H302Do: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)
(No Cell Allocation Available)
27
H302Dp: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)
(Protocol Error Unspecified)
28
H302Dq: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)
(Other Causes)
29
H3022A: Failed Internal Intra-Cell Handovers (Channel Unavailable)
(Underlay to Overlay)
30
H3021A: Failed Internal Intra-Cell Handovers (Channel Unavailable) (Overlay
to Underlay)
31
H3022M: Failed Internal Intra-Cell Handovers (Other Causes) (Underlay to
Overlay)
32
H3021M: Failed Internal Intra-Cell Handovers (Other Causes) (Overlay to
Underlay)
33
H3023A: Failed Internal Intra-Cell Handovers (Dynamic Conversion, TCHFTCHH)
34
H3023B: Failed Internal Intra-Cell Handovers (Dynamic Conversion, TCHHTCHF)
35
H3024A: Failed Internal Intra-Cell Handovers (Dynamic Conversion, TCHSDCCH)
36
H3024B: Failed Internal Intra-Cell Handovers (Dynamic Conversion, SDCCHTCH)
Meaning
The counters measure the number of failed intra-cell handovers based on handover types,
channel types, and failure causes.
Along with Intra-Cell Handover Requests per Cell and Intra-Cell Handover Commands per
Cell, the counters show the performance of intra-cell handovers.
The intra-cell handover is of the following types:
11-76
z
Intra-cell handover requests in normal conditions
z
Intra-cell handover requests caused by dynamic channel conversion
z
Intra-cell handover requests in concentric cells
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The channel involved in the measurement is of the following types:
z
SDCCH
z
TCHF
z
TCHH
The failure causes of intra-cell handovers include the following:
z
Channel unavailable
z
Terrestrial resource request failed
z
A-interface failure
z
Clear commands sent by MSC
z
Timer expired
z
Reconnection to old channels
The dynamic channel conversion is of the following types:
z
TCHF to TCHH (TCHF-TCHH)
z
TCHH to TCHF (TCHH-TCHF)
z
TCH to SDCCH (TCH-SDCCH)
z
SDCCH to TCH (SDCCH-TCH)
The concentric cell handover is of the following types:
z
Underlaid subcell to overlaid subcell (Underlay to Overlay)
z
Overlaid subcell to underlaid subcell (Overlay to Underlay)
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Trigger Point
Figure 11-11 shows the trigger points of the counters of Failed Intra-Cell Handovers per Cell.
Figure 11-11 Trigger points of the counters of Failed Intra-Cell Handovers per Cell
MS
BTS1(CELLO)
BSC
BTS1(CELLO)
MS
MSC
MR FROM MS
A
CHAN ACTIV
CHAN
ACTIV ACK
In the
intra-cell
handover
procedure
B
HO ACC
HO CMD
HO DETECT
PHY INFO
FIRST SABM
EST IND
C
TIME OUT
F
D
HO FAIL
E
G
H
HO CMP
HO PERFORMED
A: Failed Intra-Cell Handovers (Channel Unavailable)
B: Failed Intra-Cell Handovers (Terrestrial Resource Request Failed)
C: Failed Intra-Cell Handovers (A-Interface Failure)
D: Failed Intra-Cell Handovers (Clear Commands Sent by MSC)
E: Failed Intra-Cell Handovers
F: Failed Intra-Cell Handovers (Timer Expired)
G: Failed Intra-Cell Handovers (Reconnection to Old Channels)
H: Failed Intra-Cell Handovers (Other Causes)
The trigger points of the counters are as follows:
z
Failed Intra-Cell Handovers
As shown in Figure 11-11, the measurement is triggered when the intra-cell handover
fails before the handover completion timer expires. The measurement is based on the
channel type.
The channel involved in the measurement is of the following types:
−
SDCCH
−
TCH
The dynamic channel conversion is of the following types:
−
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TCHF to TCHH (TCHF-TCHH)
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z
−
TCHH to TCHF (TCHH-TCHF)
−
TCH to SDCCH (TCH-SDCCH)
−
SDCCH to TCH (SDCCH-TCH)
11 Call Measurement
Failed Intra-Cell Handovers (Channel Unavailable)
As shown in Figure 11-11, the measurement is triggered when a channel request fails
because the target cell has no channel available. The measurement is based on the
handover type and the channel type.
The intra-cell handover is of the following types:
−
Intra-cell handover requests in normal conditions
−
Intra-cell handover requests in concentric cells.
The channel involved in the measurement is of the following types:
−
SDCCH
−
TCHF
−
TCHH
The concentric cell handover is of the following types:
z
−
Underlaid subcell to overlaid subcell (Underlay to Overlay)
−
Overlaid subcell to underlaid subcell (Overlay to Underlay)
Failed Intra-Cell Handovers (Terrestrial Resource Request Failed)
As shown in Figure 11-11, the measurement is triggered when the BSC net-drive fails.
z
Failed Intra-Cell Handovers (A-Interface Failure)
As shown in Figure 11-11, the measurement is triggered when the BSC receives an Ainterface failure message before the MS sends an HO CMP message to the BSC.
z
Failed Intra-Cell Handovers (Clear Commands Sent by MSC)
As shown in Figure 11-11, the measurement is triggered when the BSC receives a CLR
CMD message before the MS sends an HO CMP message to the BSC.
z
Failed Intra-Cell Handovers (Timer Expired)
As shown in Figure 11-11, the BSC sends an HO CMD message to the MS and starts a
timer to wait for an HO CMP message. The measurement is triggered when the timer
expires. The measurement is based on the channel type.
The channel involved in the measurement is of the following types:
z
−
SDCCH
−
TCHF
−
TCHH
Failed Intra-Cell Handovers (Reconnection to Old Channels)
As shown in Figure 11-11, BSC sends an HO CMD message to the MS and starts a timer
to wait for an HO CMP message. Before the timer expires, the MS reconnects to the old
channel and sends the BSC an HO FAIL message on the old channel. The measurement
is triggered when the BSC receives the HO FAIL message. The measurement is based on
the failure cause carried in the message.
The message carries any of the following failure causes:
Abnormal release, unspecified
Abnormal release, channel unacceptable
Abnormal release, timer expired
Abnormal release, no activity on the radio path
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Preemptive release
Handover failed, timing advance out of range
Channel mode unavailable
Frequency unavailable
Call already cleared
Semantically incorrect message
Invalid mandatory information
Message type non-existent or not implemented
Message type not compatible with protocol state
Conditional IE error
No cell allocation available
Protocol error unspecified
Other causes
z
Failed Intra-Cell Handovers (Concentric Cell)
As shown in Figure 11-11, after the BSC sends an HO CMD message to the MS, the
measurement is triggered when the BSC receives an HO FAIL message before receiving
an HO CMP message from the MS. The HO FAIL message carries any cause except for
those described previously. The measurement is based on the handover direction
(underlaid subcell to overlaid subcell, overlaid subcell to underlaid subcell).
Formula
None.
11.10.5 Intra-Cell AMR Handover per Cell
Counter
Table 11-29 lists the counters of Intra-Cell AMR Handover per Cell.
Table 11-31 Counters of Intra-Cell AMR Handover per Cell
11-80
Number
Counter
1
H3055A: Internal Intra-Cell Handovers Not Initiated (AMR) (TCHF-TCHH)
2
H3055B: Internal Intra-Cell Handovers Not Initiated (AMR) (TCHH-TCHF)
3
H3005A: Internal Intra-Cell Handover Requests (AMR) (TCHF-TCHH)
4
H3005B: Internal Intra-Cell Handover Requests (AMR) (TCHH-TCHF)
5
H3015A: Internal Intra-Cell Handover Commands (AMR) (TCHF-TCHH)
6
H3015B: Internal Intra-Cell Handover Commands (AMR) (TCHH-TCHF)
7
H3025A: Failed Internal Intra-Cell Handovers (AMR) (TCHF-TCHH)
8
H3025B: Failed Internal Intra-Cell Handovers (AMR) (TCHH-TCHF)
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Meaning
For an Adaptive Multi-Rate (AMR) call, when the BSC decides that an intra-cell handover
(TCHF to TCHH) is required based on the handover algorithm, the BSC ignores the handover
indication and measures Internal Intra-Cell Handovers Not Initiated (AMR) (TCHF-TCHH) if
the MSC does not allow the conversion of channel types.
For an AMR call, when the BSC decides that an intra-cell handover (TCHH to TCHF) is
required based on the handover algorithm, the BSC ignores the handover indication and
measures Internal Intra-Cell Handovers Not Initiated (AMR) (TCHH-TCHF) if the MSC does
not allow the conversion of channel types.
For an AMR call, when the BSC decides that an intra-cell handover (TCHF to TCHH) is
required based on the handover algorithm, the BSC measures Internal Intra-Cell Handover
Requests (AMR) (TCHF-TCHH) if the handover is allowed.
For an AMR call, when the BSC decides that an intra-cell handover (TCHH to TCHF) is
required based on the handover algorithm, the BSC measures Internal Intra-Cell Handover
Requests (AMR) (TCHH-TCHF) if the handover is allowed.
For an AMR call, if the BSC decides that an intra-cell handover (TCHF to TCHH) is required
based on the handover algorithm, the BSC measures Internal Intra-Cell Handover Commands
(AMR) (TCHF-TCHH) when the handover is initiated and a handover command is sent.
For an AMR call, if the BSC decides that an intra-cell handover (TCHH to TCHF) is required
based on the handover algorithm, the BSC measures Internal Intra-Cell Handover Commands
(AMR) (TCHH-TCHF) when the handover is initiated and a handover command is sent.
For an AMR call, if the BSC decides that an intra-cell handover (TCHF to TCHH) is required
based on the handover algorithm, the BSC measures Failed Internal Intra-Cell Handovers
(AMR) (TCHF-TCHH) when the handover is initiated but the handover fails due to a certain
cause.
For an AMR call, if the BSC decides that an intra-cell handover (TCHH to TCHF) is required
based on the handover algorithm, the BSC measures Failed Internal Intra-Cell Handovers
(AMR) (TCHH-TCHF) when the handover is initiated but the handover fails due to a certain
cause.
The AMR is a kind of speech codec algorithm. It can improve the speech quality by adjusting the
encoding rate based on the radio environment.
To control the call performance in a flexible way and to maximize the network capacity, the BSC needs
a handover algorithm as follows:
z
If an AMR call seizes a full rate channel and its RQI is always higher than the defined threshold of
the handover from the TCHF to the TCHH in a period of time, the handover from the TCHF to the
TCHH is triggered.
z
If an AMR call seizes a half rate channel and its RQI is always lower than the defined threshold of
the handover from the TCHH to the TCHF in a period of time, the handover from the TCHH to the
TCHF is triggered.
z
The algorithm is controlled by the switches of both the intra-cell handover permit and the intra-cell
full rate–half rate handover permit. Because the BTS reports the RQI for only AMR calls, the AMR
handover is used for only AMR calls.
Trigger Point
For the description of the trigger points of the counters, refer to the trigger points of the
common handovers.
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Formula
None.
11.10.6 Intra-Cell Handover Detection Messages Received by BSC
per Cell
Counter
Table 11-32 lists the counters of Intra-Cell Handover Detection Messages Received by BSC
per Cell.
Table 11-32 Counters of Intra-Cell Handover Detection Messages Received by BSC per Cell
Number
Counter
1
H3040: Internal Intra-Cell Handover Detection Messages Received by BSC
(SDCCH)
2
H3047: Internal Intra-Cell Handover Detection Messages Received by BSC
(TCHF)
3
H3048: Internal Intra-Cell Handover Detection Messages Received by BSC
(TCHH)
Meaning
The counters measure the number of times the BSC receives from the BTS an HO DETECT
message in the target cell (current cell). The measurement is based on the channel type.
The channel type consists of SDCCH, TCHF, and TCHH.
Trigger Point
As shown in Figure 11-11, the measurement is triggered when the BSC receives an HO
DETECT message in the target cell (current cell). The measurement is based on the channel
type.
Formula
None.
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11.10.7 Intra-Cell Handover Measurement per Cell
Counter
Table 11-33 lists the counters of Intra-Cell Handover Measurement per Cell.
Table 11-33 Counters of Intra-Cell Handover Measurement per Cell
Number
Counter
1
CH300: Internal Intra-Cell Handover Requests
2
CH303: Successful Internal Intra-Cell Handovers
3
TH303: Success Rate of Internal Intra-Cell Handover
4
TH3032: Success Rate of Internal Intra-Cell Handover (Underlay to Overlay)
5
TH3031: Success Rate of Internal Intra-Cell Handover (Overlay to Underlay)
6
CH301: Internal Intra-Cell Handover Commands
7
CH304: Internal Intra-Cell Handover Detection Messages Received by BSC
8
CH302: Failed Internal Intra-Cell Handovers
9
CH302A: Failed Internal Intra-Cell Handovers (Channel Unavailable)
10
CH302C: Failed Internal Intra-Cell Handovers (Timer Expiry)
11
CH302D: Failed Internal Intra-Cell Handovers (Reconnection to Old
Channels)
12
CH3022: Failed Internal Intra-Cell Handovers (Underlay to Overlay)
13
CH3021: Failed Internal Intra-Cell Handovers (Overlay to Underlay)
14
TH3033A: Success Rate of Internal Intra-Cell Handover (Dynamic
Conversion, TCHF-TCHH)
15
TH3033B: Success Rate of Internal Intra-Cell Handover (Dynamic
Conversion, TCHH-TCHF)
16
TH3034A: Success Rate of Internal Intra-Cell Handover (Dynamic
Conversion, TCH-SDCCH)
17
TH3034B: Success Rate of Internal Intra-Cell Handover (Dynamic
Conversion, SDCCH-TCH)
18
TH3035A: Success Rate of Internal Intra-Cell Handover (AMR) (TCHFTCHH)
19
TH3035B: Success Rate of Internal Intra-Cell Handover (AMR) (TCHHTCHF)
20
CH3032: Successful Internal Intra-Cell Handovers (Underlay to Overlay)
21
CH3031: Successful Internal Intra-Cell Handovers (Overlay to Underlay)
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Number
Counter
22
CH3033A: Successful Internal Intra-Cell Handovers (Dynamic Conversion,
TCHF-TCHH)
23
CH3033B: Successful Internal Intra-Cell Handovers (Dynamic Conversion,
TCHH-TCHF)
24
CH3034A: Successful Internal Intra-Cell Handovers (Dynamic Conversion,
TCH-SDCCH)
25
CH3034B: Successful Internal Intra-Cell Handovers (Dynamic Conversion,
SDCCH-TCH)
26
CH3035A: Successful Internal Intra-Cell Handovers (AMR) (TCHF-TCHH)
27
CH3035B: Successful Internal Intra-Cell Handovers (AMR) (TCHH-TCHF)
Meaning
None.
Trigger Point
None.
Formula
Internal Intra-Cell Handover Requests =
[Internal Intra-Cell Handover Requests (SDCCH)] + [Internal Intra-Cell Handover Requests
(TCH)]
Successful Internal Intra-Cell Handovers =
[Internal Intra-Cell Handover Requests (SDCCH)] + [Internal Intra-Cell Handover Requests
(TCH)]-[Failed Internal Intra-Cell Handovers (SDCCH)]-[Failed Internal Intra-Cell
Handovers (TCH)]
SUCCESS RATE OF INTERNAL INTRA-CELL HANDOVER =
[Successful Internal Intra-Cell Handovers]*{100}/[Internal Intra-Cell Handover Requests]
SUCCESS RATE OF INTERNAL INTRA-CELL HANDOVER (Underlay to Overlay) =
[Successful Internal Intra-Cell Handovers (Underlay to Overlay)]*{100}/[Internal Intra-Cell
Handover Requests (Underlay to Overlay)]
SUCCESS RATE OF INTERNAL INTRA-CELL HANDOVER (Overlay to Underlay) =
[Successful Internal Intra-Cell Handovers (Overlay to Underlay)]*{100}/[Internal Intra-Cell
Handover Requests (Overlay to Underlay)]
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Internal Intra-Cell Handover Commands =
[Internal Intra-Cell Handover Commands (SDCCH)] +
[Internal Intra-Cell Handover Commands (TCHF)] +
[Internal Intra-Cell Handover Commands (TCHH)]
Internal Intra-Cell Handover Detection Messages Received by BSC =
[Internal Intra-Cell Handover Detection Messages Received by BSC (SDCCH)] +
[Internal Intra-Cell Handover Detection Messages Received by BSC (TCHF)] +
[Internal Intra-Cell Handover Detection Messages Received by BSC (TCHH)]
Failed Internal Intra-Cell Handovers =
[Failed Internal Intra-Cell Handovers (SDCCH)] +
[Failed Internal Intra-Cell Handovers (TCH)]
Failed Internal Intra-Cell Handovers (Channel Unavailable) =
[Failed Internal Intra-Cell Handovers (Channel Unavailable) (SDCCH)] +
[Failed Internal Intra-Cell Handovers (Channel Unavailable) (TCH)]
Failed Internal Intra-Cell Handovers (Timer Expired) =
[Failed Internal Intra-Cell Handovers (Timer Expired) (SDCCH)] +
[Failed Internal Intra-Cell Handovers (Timer Expired) (TCHF) (Signaling Channel)] +
[Failed Internal Intra-Cell Handovers (Timer Expired) (TCHH) (Signaling Channel)] +
[Failed Internal Intra-Cell Handovers (Timer Expired) (TCHF) (Traffic Channel)] +
[Failed Internal Intra-Cell Handovers (Timer Expired) (TCHH) (Traffic Channel)]
Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) =
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Abnormal Release,
Unspecified)] +
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Abnormal Release,
Channel Unacceptable)] +
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Abnormal Release,
Timer Expired)] +
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Abnormal Release, No
Activity on the Radio Path)] +
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[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Preemptive Release)]
+
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Handover Failed,
Timing Advance out of Range)] +
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Channel Mode
Unavailable)] +
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Frequency
Unavailable)] +
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Call Already Cleared)]
+
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Semantically Incorrect
Message)] +
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Invalid Mandatory
Information)] +
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Message Type Nonexistent or Not Implemented)] +
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Message Type Not
Compatible with Protocol State)] +
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Conditional IE Error)]
+
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (No Cell Allocation
Available)] +
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Protocol Error
Unspecified)] +
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Other Causes)]
Failed Internal Intra-Cell Handovers (Underlay to Overlay) =
[Failed Internal Intra-Cell Handovers (Channel Unavailable) (Underlay to Overlay)] +
[Failed Internal Intra-Cell Handovers (Other Causes) (Underlay to Overlay)]
Failed Internal Intra-Cell Handovers (Overlay to Underlay) =
[Failed Internal Intra-Cell Handovers (Channel Unavailable) (Overlay to Underlay)] +
[Failed Internal Intra-Cell Handovers (Other Causes) (Overlay to Underlay)]
Success Rate of Internal Intra-Cell Handover (Dynamic Conversion, TCHF-TCHH) =
[Successful Internal Intra-Cell Handovers (Dynamic Conversion, TCHFTCHH)]*{100}/[Internal Intra-Cell Handover Requests (Dynamic Conversion, TCHF-TCHH)]
Success Rate of Internal Intra-Cell Handover (Dynamic Conversion, TCHH-TCHF) =
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[Successful Internal Intra-Cell Handovers (Dynamic Conversion, TCHHTCHF)]*{100}/[Internal Intra-Cell Handover Requests (Dynamic Conversion, TCHH-TCHF)]
Success Rate of Internal Intra-Cell Handover (Dynamic Conversion, TCH-SDCCH) =
Successful Internal Intra-Cell Handovers (Dynamic Conversion, TCHSDCCH)]*{100}/[Internal Intra-Cell Handover Requests (Dynamic Conversion, TCHSDCCH)]
Success Rate of Internal Intra-Cell Handover (Dynamic Conversion, SDCCH-TCH) =
[Successful Internal Intra-Cell Handovers (Dynamic Conversion, SDCCHTCH) ]*{100}/[ Internal Intra-Cell Handover Requests (Dynamic Conversion, SDCCHTCH) ]
Success Rate of Internal Intra-Cell Handover (AMR) (TCHF-TCHH) =
[Successful Internal Intra-Cell Handovers (AMR) (TCHF-TCHH)]*{100}/[Internal Intra-Cell
Handover Requests (AMR) (TCHF-TCHH)]
Success Rate of Internal Intra-Cell Handover (AMR) (TCHH-TCHF) =
[Successful Internal Intra-Cell Handovers (AMR) (TCHH-TCHF)]*{100}/[Internal Intra-Cell
Handover Requests (AMR) (TCHH-TCHF)]
Successful Internal Intra-Cell Handovers (Underlay to Overlay) =
[Internal Intra-Cell Handover Requests (Underlay to Overlay)]-[Failed Internal Intra-Cell
Handovers (Channel Unavailable) (Underlay to Overlay)]-[Failed Internal Intra-Cell
Handovers (Other Causes) (Underlay to Overlay)]
Successful Internal Intra-Cell Handovers (Overlay to Underlay) =
[Internal Intra-Cell Handover Requests (Overlay to Underlay)]-[Failed Internal Intra-Cell
Handovers (Channel Unavailable) (Overlay to Underlay)]-[Failed Internal Intra-Cell
Handovers (Other Causes) (Overlay to Underlay)]
Successful Internal Intra-Cell Handovers (Dynamic Conversion, TCHF-TCHH) =
[Internal Intra-Cell Handover Requests (Dynamic Conversion, TCHF-TCHH)]- [Failed
Internal Intra-Cell Handovers (Dynamic Conversion, TCHF-TCHH) ]
Successful Internal Intra-Cell Handovers (Dynamic Conversion, TCHH-TCHF) =
[Internal Intra-Cell Handover Requests (Dynamic Conversion, TCHH-TCHF)]- [Failed
Internal Intra-Cell Handovers (TCHH-TCHF)]
Successful Internal Intra-Cell Handovers (Dynamic Conversion, TCH-SDCCH) =
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[Internal Intra-Cell Handover Requests (Dynamic Conversion, TCH-SDCCH) ]-[ Failed
Internal Intra-Cell Handovers (Dynamic Conversion, TCH-SDCCH) ]
Successful Internal Intra-Cell Handovers (Dynamic Conversion, SDCCH-TCH) =
[Internal Intra-Cell Handover Requests (Dynamic Conversion, SDCCH-TCH)]- [Failed
Internal Intra-Cell Handovers (Dynamic Conversion, SDCCH-TCH) ]
Successful Internal Intra-Cell Handovers (AMR) (TCHF-TCHH) =
[Internal Intra-Cell Handover Requests (AMR) (TCHF-TCHH)]- [Failed Internal Intra-Cell
Handovers (AMR) (TCHF-TCHH)]
Successful Internal Intra-Cell Handovers (AMR) (TCHH-TCHF) =
[Internal Intra-Cell Handover Requests (AMR) (TCHH-TCHF)]- [Failed Internal Intra-Cell
Handovers (AMR) (TCHH-TCHF)]
11.11 Incoming Internal Inter-Cell Handover
Measurement per Cell
11.11.1 Overview
After an MS seizes a dedicated channel, it sends measurement reports to the BSC periodically.
After receiving the measurement reports, the BSC uses the handover algorithm to decide
whether a handover is required or not on the basis of the factors such as the cell load,
concentric cell, signal interference, and measurement reports. If a handover is required and
the source cell (current cell) and the target cell are two cells in a BSC, an internal inter-cell
handover is initiated.
The internal inter-cell handover procedure is as follows:
Step 1 The BSC sends a CHAN ACTIV message to the BTS where the target cell is located. This
message is used to activate the specified channel in the target cell.
Step 2 After receiving a CHAN ACTIV ACK message, the BSC requests for channel resources. If
the request succeeds, the BSC sends the MS an HO CMD message, requesting the MS
through the source cell to initiate a handover from the source cell to the target cell.
Step 3 The MS sends the target BTS a HO ACC message to attempt to access a new cell.
Step 4 The target BTS forwards this message through an HO DETECT message to the BSC and
sends a PHY INFO message to the MS.
Step 5 The MS sends a FIRST SABM frame to the target BTS and the target BTS sends the BSC an
EST IND message, indicating that the MS has successfully accessed the target cell. The MS
also sends an HO CMP message to the BSC.
Step 6 The BSC sends an HO PERFORMED message to the MSC.
----End
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The incoming internal inter-cell handover is part of the internal inter-cell handover. It refers to
the internal inter-cell handover procedure performed in the target cell (the cell where the MS
is located after the handover). The source cell (the cell where the MS is located before the
handover) and the target cell can be two cells in a BTS or two cells in two BTSs controlled by
one BSC.
Figure 11-12 shows the incoming internal inter-cell handover procedure.
Figure 11-12 Incoming internal inter-cell handover
MS
BTS1(CELL1)
BSC
BTS1(CELLO)
MS
MSC
MR FROM MS
A
CHAN ACTIV
CHAN ACTIV
ACK
HO ACC
HO CMD
B
HO DETECT
PHY INFO
FIRST SABM
EST IND
HO CMP
HO PERFORMED
A: Incoming Internal Inter-Cell Handover Requests
B: Incoming Internal Inter-Cell Handover Responses
Table 11-34 lists the counter classification of Incoming Internal Inter-Cell Handover
Measurement per Cell.
Table 11-34 Counter classification of Incoming Internal Inter-Cell Handover Measurement per
Cell
Counter Classification
Section
Incoming Internal Inter-Cell Handover Requests per Cell
11.11.2
Incoming Internal Inter-Cell Handover Responses per Cell
11.11.3
Failed Incoming Internal Inter-Cell Handovers per Cell
11.11.4
Incoming Internal Inter-Cell Handover Detection Messages Received by
BSC per Cell
11.11.5
Incoming Internal Inter-Cell Handover Analyzed Measurement per Cell
11.11.6
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11.11.2 Incoming Internal Inter-Cell Handover Requests per Cell
Counter
Table 11-35 lists the counters of Incoming Internal Inter-Cell Handover Requests per Cell.
Table 11-35 Counters of Incoming Internal Inter-Cell Handover Requests per Cell
Number
Counter
1
H3200W: Incoming Internal Inter-Cell Handover Requests (SDCCH)
(900/850-900/850)
2
H3200X: Incoming Internal Inter-Cell Handover Requests (SDCCH)
(1800/1900-1800/1900)
3
H3200Y: Incoming Internal Inter-Cell Handover Requests (SDCCH) (900/8501800/1900)
4
H3200Z: Incoming Internal Inter-Cell Handover Requests (SDCCH)
(1800/1900-900/850)
5
H3209W: Incoming Internal Inter-Cell Handover Requests (TCH) (900/850900/850)
6
H3209X: Incoming Internal Inter-Cell Handover Requests (TCH) (1800/19001800/1900)
7
H3209Y: Incoming Internal Inter-Cell Handover Requests (TCH) (900/8501800/1900)
8
H3209Z: Incoming Internal Inter-Cell Handover Requests (TCH) (1800/1900900/850)
Meaning
The BSC uses the handover algorithm to decide whether a handover is required or not based
on the measurement reports. If a handover is required and the source cell (current cell) and the
target cell are two different cells controlled by a BSC, the BSC initiates an internal inter-cell
handover.
The counters measure the number of internal inter-cell handovers in the target cell. The
measurement is based on the channel type and the crossing of frequency bands.
Along with Incoming Internal Inter-Cell Handover Responses per Cell and Failed Incoming
Internal Inter-Cell Handover, the counters show the performance of incoming internal intercell handovers. Along with Outgoing Internal Inter-Cell Handover Measurement per Cell, the
counters show the performance of internal inter-cell handovers.
The channel involved in the measurement is of the following types:
z
SDCCH
z
TCH
The crossing of frequency bands is of the following types:
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z
900/850 to 900/850
z
1800/1900 to 1800/1900
z
900/850 to 1800/1900
z
1800/1900 to 900/850
11 Call Measurement
Trigger Point
As shown in Figure 11-12 (A), the measurement is triggered when the BSC decides to initiate
an incoming internal inter-cell handover. The measurement is based on the channel type and
the crossing of frequency bands.
Formula
None.
11.11.3 Incoming Internal Inter-Cell Handover Responses per Cell
Counter
Table 11-36 lists the counters of Incoming Internal Inter-Cell Handover Responses per Cell.
Table 11-36 Counters of Incoming Internal Inter-Cell Handover Responses per Cell
Number
Counter
1
H3210W: Incoming Internal Inter-Cell Handover Responses (SDCCH)
(900/850-900/850)
2
H3210X: Incoming Internal Inter-Cell Handover Responses (SDCCH)
(1800/1900-1800/1900)
3
H3210Y: Incoming Internal Inter-Cell Handover Responses (SDCCH)
(900/850-1800/1900)
4
H3210Z: Incoming Internal Inter-Cell Handover Responses (SDCCH)
(1800/1900-900/850)
5
H3217W: Incoming Internal Inter-Cell Handover Responses (TCHF)
(900/850-900/850)
6
H3217X: Incoming Internal Inter-Cell Handover Responses (TCHF)
(1800/1900-1800/1900)
7
H3217Y: Incoming Internal Inter-Cell Handover Responses (TCHF)
(900/850-1800/1900)
8
H3217Z: Incoming Internal Inter-Cell Handover Responses (TCHF)
(1800/1900-900/850)
9
H3218W: Incoming Internal Inter-Cell Handover Responses (TCHH)
(900/850-900/850)
10
H3218X: Incoming Internal Inter-Cell Handover Responses (TCHH)
(1800/1900-1800/1900)
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Number
Counter
11
H3218Y: Incoming Internal Inter-Cell Handover Responses (TCHH)
(900/850-1800/1900)
12
H3218Z: Incoming Internal Inter-Cell Handover Responses (TCHH)
(1800/1900-900/850)
Meaning
The counters measure the number of incoming internal inter-cell handover responses of the
target cell. The BSC sends the MS an HO CMD message in the source cell. This message is
regarded as a handover response of the target cell to the MS. The measurement is based on the
channel type and the crossing of frequency bands.
Along with Incoming Internal Inter-Cell Handover Requests per Cell, Intra-Cell Handover
Requests per Cell, and Failed Incoming Internal Inter-Cell Handovers per Cell, the counters
show the performance of incoming internal inter-cell handovers. Along with Outgoing
Internal Inter-Cell Handover Measurement per Cell, the counters show the performance of
internal inter-cell handovers.
The channel involved in the measurement is of the following types:
z
SDCCH
z
TCHF
z
TCHH
The crossing of frequency bands is of the following types:
z
900/850 to 900/850
z
1800/1900 to 1800/1900
z
900/850 to 1800/1900
z
1800/1900 to 900/850
Trigger Point
As shown in Figure 11-12 (B), the measurement is triggered when the BSC sends the MS an
HO CMD message in the source cell. The measurement is based on the channel type and the
crossing of frequency bands.
Formula
None.
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11.11.4 Failed Incoming Internal Inter-Cell Handovers per Cell
Counter
Table 11-37 lists the counters of Failed Incoming Internal Inter-Cell Handovers per Cell.
Table 11-37 Counters of Failed Incoming Internal Inter-Cell Handovers per Cell
Number
Counter
1
H3220W: Failed Incoming Internal Inter-Cell Handovers (SDCCH)
(900/850-900/850)
2
H3220X: Failed Incoming Internal Inter-Cell Handovers (SDCCH)
(1800/1900-1800/1900)
3
H3220Y: Failed Incoming Internal Inter-Cell Handovers (SDCCH) (900/8501800/1900)
4
H3220Z: Failed Incoming Internal Inter-Cell Handovers (SDCCH)
(1800/1900-900/850)
5
H3229W: Failed Incoming Internal Inter-Cell Handovers (TCH) (900/850900/850)
6
H3229X: Failed Incoming Internal Inter-Cell Handovers (TCH) (1800/19001800/1900)
7
H3229Y: Failed Incoming Internal Inter-Cell Handovers (TCH) (900/8501800/1900)
8
H3229Z: Failed Incoming Internal Inter-Cell Handovers (TCH) (1800/1900900/850)
9
H3220A: Failed Incoming Internal Inter-Cell Handovers (Channel
Unavailable) (SDCCH)
10
H3229A: Failed Incoming Internal Inter-Cell Handovers (Channel
Unavailable) (TCH)
11
H322B: Failed Incoming Internal Inter-Cell Handovers (Terrestrial Resource
Request Failed)
12
H322D: Failed Incoming Internal Inter-Cell Handovers (Reconnection to Old
Channels)
13
H322G: Failed Incoming Internal Inter-Cell Handovers (A-Interface Failure)
14
H3220C: Failed Incoming Internal Inter-Cell Handovers (Timer Expired)
(SDCCH)
15
H3227Cb: Failed Incoming Internal Inter-Cell Handovers (Timer Expired)
(TCHF) (Signaling Channel)
16
H3228Cb: Failed Incoming Internal Inter-Cell Handovers (Timer Expired)
(TCHH) (Signaling Channel)
17
H3227Ca: Failed Incoming Internal Inter-Cell Handovers (Timer Expired)
(TCHF) (Traffic Channel)
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Number
Counter
18
H3228Ca: Failed Incoming Internal Inter-Cell Handovers (Timer Expired)
(TCHH) (Traffic Channel)
Meaning
The counters measure the number of failed incoming internal inter-cell handovers in the target
cell due to different causes. The measurement is based on the channel type, the failure cause,
and the crossing of frequency bands.
Along with Incoming Internal Inter-Cell Handover Requests per Cell and Incoming Internal
Inter-Cell Handover Responses per Cell, the counters show the performance of incoming
internal inter-cell handovers. Along with Outgoing Internal Inter-Cell Handover Measurement
per Cell, the counters show the performance of internal inter-cell handovers.
The channel involved in the measurement is of the following types:
z
SDCCH
z
TCH
The crossing of frequency bands is of the following types:
z
900/850 to 900/850
z
1800/1900 to 1800/1900
z
900/850 to 1800/1900
z
1800/1900 to 900/850
The failure causes include:
z
Channel unavailable
z
Terrestrial resource request failure
z
A-interface failure
z
Timer expired
z
Reconnection to old channels
Trigger Point
The trigger points of the counters are as follows:
z
Failed Incoming Internal Inter-Cell Handovers
As shown in Figure 11-13, the measurement is triggered when the intra-cell handover
fails before the handover completion timer expires. The measurement is based on the
channel type and the crossing of frequency bands.
The channel involved in the measurement is of the following types:
−
SDCCH
−
TCH
The crossing of frequency bands is of the following types:
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1800/1900 to 1800/1900
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z
−
900/850 to 1800/1900
−
1800/1900 to 900/850
11 Call Measurement
Failed Incoming Internal Inter-Cell Handovers (Channel Unavailable)
As shown in Figure 11-13, the measurement is triggered when a channel request fails
because the target cell has no channel available. The measurement is based on the
channel type.
The channel involved in the measurement is of the following types:
z
−
SDCCH
−
TCHF
−
TCHH
Failed Incoming Internal Inter-Cell Handovers (Terrestrial Resource Request Failed)
As shown in Figure 11-13, the measurement is triggered when the BSC net-drive fails.
z
Failed Incoming Internal Inter-Cell Handovers (A-Interface Failure)
As shown in Figure 11-13, the measurement is triggered when the BSC receives an Ainterface failure message before the MS sends an HO CMP message to the BSC.
z
Failed Incoming Internal Inter-Cell Handovers (Timer Expired)
As shown in Figure 11-13, the BSC sends an HO CMD message to the MS and starts a
timer to wait for an HO CMP message. The measurement is triggered when the timer
expires. The measurement is based on the channel type.
The channel involved in the measurement is of the following types:
z
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−
SDCCH
−
TCHF
−
TCHH
Failed Incoming Internal Inter-Cell Handovers (Reconnection to Old Channels)
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As shown in Figure 11-13, BSC sends an HO CMD message to the MS and starts a timer
to wait for an HO CMP message. Before the timer expires, the MS reconnects to the old
channel and sends the BSC an HO FAIL message on the old channel. The measurement
is triggered when the BSC receives the HO FAIL message.
Figure 11-13 Trigger points of the counters of Failed Incoming Internal Inter-Cell Handovers per
Cell
MS
BTS1(CELL1)
BSC
BTS1(CELLO)
MS
MSC
MR FROM MS
A
CHAN ACTIV
In the
incoming
internal
inter-cell
handover
procedure
CHAN
ACTIV ACK
B
HO CMD
HO ACC
HO DETECT
PHY INFO
FIRST SABM
C
EST IND
D
TIME OUT
E
HO CMP
HO FAIL
F
HO PERFORMED
A: Failed Incoming Internal Inter-Cell Handovers (Channel Unavailable)
B: Failed Incoming Internal Inter-Cell Handovers (Terrestrial Resource Request Failed)
C: Failed Incoming Internal Inter-Cell Handovers (A-Interface Failure)
D: Failed Incoming Internal Inter-Cell Handovers
E: Failed Incoming Internal Inter-Cell Handovers (Timer Expired)
F: Failed Incoming Internal Inter-Cell Handovers (Reconnection to Old Channels)
Formula
None.
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11.11.5 Incoming Internal Inter-Cell Handover Detection
Messages Received by BSC per Cell
Counter
Table 11-38 lists the counters of Incoming Internal Inter-Cell Handover Detection Messages
Received by BSC per Cell.
Table 11-38 Counters of Incoming Internal Inter-Cell Handover Detection Messages Received by
BSC per Cell
Number
Counter
1
H3240: Incoming Internal Inter-Cell Handover Detection Messages Received
by BSC (SDCCH)
2
H3247: Incoming Internal Inter-Cell Handover Detection Messages Received
by BSC (TCHF)
3
H3248: Incoming Internal Inter-Cell Handover Detection Messages Received
by BSC (TCHH)
Meaning
The counters measure the number of times the BSC receives an HO DETECT message from
the BTS in the target cell. The measurement is based on the channel type.
The channel involved in the measurement is of the following types:
z
SDCCH
z
TCHF
z
TCHH
Trigger Point
As shown in Figure 11-13, the measurement is triggered when the BSC receives an HO
DETECT message from the BTS in the target cell. The measurement is based on the channel
type.
Formula
None.
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11.11.6 Incoming Internal Inter-Cell Handover Analyzed
Measurement per Cell
Counter
Table 11-39 lists the counters of Incoming Internal Inter-Cell Handover Analyzed
Measurement per Cell.
Table 11-39 Counters of Incoming Internal Inter-Cell Handover Analyzed Measurement per Cell
Number
Counter
1
CH320: Incoming Internal Inter-Cell Handover Requests
2
CH323: Successful Incoming Internal Inter-Cell Handovers
3
TH323: Success Rate of Incoming Internal Inter-Cell Handover
4
CH322: Failed Incoming Internal Inter-Cell Handovers
5
CH324: Incoming Internal Inter-Cell Handover Detection Messages Received
by BSC
6
CH321: Incoming Internal Inter-Cell Handover Responses
7
CH322C: Failed Incoming Internal Inter-Cell Handovers (Timer Expired)
Meaning
None.
Trigger Point
None.
Formula
Incoming Internal Inter-Cell Handover Requests =
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (900/850-900/850)] +
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (1800/1900-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (900/850-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (1800/1900-900/850)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (900/850-900/850)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (1800/1900-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (900/850-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (1800/1900-900/850)]
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Successful Incoming Internal Inter-Cell Handovers =
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (900/850-900/850)] +
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (1800/1900-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (900/850-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (1800/1900-900/850)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (900/850-900/850)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (1800/1900-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (900/850-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (1800/1900-900/850)][Failed Incoming Internal Inter-Cell Handovers (SDCCH) (900/850-900/850)][Failed Incoming Internal Inter-Cell Handovers (SDCCH) (1800/1900-1800/1900)][Failed Incoming Internal Inter-Cell Handovers (SDCCH) (900/850-1800/1900)][Failed Incoming Internal Inter-Cell Handovers (SDCCH) (1800/1900-900/850)][Failed Incoming Internal Inter-Cell Handovers (TCH) (900/850-900/850)][Failed Incoming Internal Inter-Cell Handovers (TCH) (1800/1900-1800/1900)][Failed Incoming Internal Inter-Cell Handovers (TCH) (900/850-1800/1900)][Failed Incoming Internal Inter-Cell Handovers (TCH) (1800/1900-900/850)]
Success Rate of Incoming Internal Inter-Cell Handover =
[Successful Incoming Internal Inter-Cell Handovers]*{100}/[Incoming Internal Inter-Cell
Handover Requests]
Failed Incoming Internal Inter-Cell Handovers =
[Failed Incoming Internal Inter-Cell Handovers (SDCCH) (900/850-900/850)] +
[Failed Incoming Internal Inter-Cell Handovers (SDCCH) (1800/1900-1800/1900)] +
[Failed Incoming Internal Inter-Cell Handovers (SDCCH) (900/850-1800/1900)] +
[Failed Incoming Internal Inter-Cell Handovers (SDCCH) (1800/1900-900/850)] +
[Failed Incoming Internal Inter-Cell Handovers (TCH) (900/850-900/850)] +
[Failed Incoming Internal Inter-Cell Handovers (TCH) (1800/1900-1800/1900)] +
[Failed Incoming Internal Inter-Cell Handovers (TCH) (900/850-1800/1900)] +
[Failed Incoming Internal Inter-Cell Handovers (TCH) (1800/1900-900/850)]
Incoming Internal Inter-Cell Handover Detection Messages Received by BSC =
[Incoming Internal Inter-Cell Handover Detection Messages Received by BSC (SDCCH)] +
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[Incoming Internal Inter-Cell Handover Detection Messages Received by BSC (TCHF)] +
[Incoming Internal Inter-Cell Handover Detection Messages Received by BSC (TCHH)]
Incoming Internal Inter-Cell Handover Responses =
[Incoming Internal Inter-Cell Handover Responses (SDCCH) (900/850-900/850)] +
[Incoming Internal Inter-Cell Handover Responses (SDCCH) (1800/1900-1800/1900)] +
[Incoming Internal Inter-Cell Handover Responses (SDCCH) (900/850-1800/1900)] +
[Incoming Internal Inter-Cell Handover Responses (SDCCH) (1800/1900-900/850)] +
[Incoming Internal Inter-Cell Handover Responses (TCHF) (900/850-900/850)] +
[Incoming Internal Inter-Cell Handover Responses (TCHF) (1800/1900-1800/1900)] +
[Incoming Internal Inter-Cell Handover Responses (TCHF) (900/850-1800/1900)] +
[Incoming Internal Inter-Cell Handover Responses (TCHF) (1800/1900-900/850)] +
[Incoming Internal Inter-Cell Handover Responses (TCHH) (900/850-900/850)] +
[Incoming Internal Inter-Cell Handover Responses (TCHH) (1800/1900-1800/1900)] +
[Incoming Internal Inter-Cell Handover Responses (TCHH) (900/850-1800/1900)] +
[Incoming Internal Inter-Cell Handover Responses (TCHH) (1800/1900-900/850)]
Failed Incoming Internal Inter-Cell Handovers (Timer Expired) =
[Failed Incoming Internal Inter-Cell Handovers (Timer Expired) (SDCCH)] +
[Failed Incoming Internal Inter-Cell Handovers (Timer Expired) (TCHF) (Signaling Channel)]
+
[Failed Incoming Internal Inter-Cell Handovers (Timer Expired) (TCHH) (Signaling Channel)]
+
[Failed Incoming Internal Inter-Cell Handovers (Timer Expired) (TCHF) (Traffic Channel)] +
[Failed Incoming Internal Inter-Cell Handovers (Timer Expired) (TCHH) (Traffic Channel)]
11.12 Outgoing Internal Inter-Cell Handover
Measurement per Cell
11.12.1 Overview
Outgoing Internal Inter-Cell Handover Measurement per cell is used to measure the handover
of the cells controlled by one BSC. The measurement is performed in the source cell.
The outgoing internal inter-cell handover is initiated by measurement reports or by
assignment requests sent from the MSC. The descriptions of these two types of handovers are
as follows:
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Outgoing internal inter-cell handover initiated by measurement reports (excluding
directed retry)
After an MS seizes a dedicated channel, it sends measurement reports to the BSC periodically.
After receiving the measurement reports, the BSC uses the handover algorithm to decide
whether a handover is required or not on the basis of the factors such as the cell load,
concentric cell, signal interference, and measurement reports. If a handover is required and
the source cell (current cell) and the target cell are two cells in a BSC, an internal inter-cell
handover is initiated.
The procedure is as follows:
Step 1 The BSC sends a CHAN ACTIV message to the BTS where the target cell is located. This
message is used to activate the specified channel in the target cell.
Step 2 After receiving a CHAN ACTIV ACK message, the BSC requests for speech service
resources. If the request succeeds, the BSC sends the MS an HO CMD message, requesting
the MS to initiate a handover from the source cell to the target cell.
Step 3 The MS sends the target BTS a HO ACC message to attempt to access a new cell.
Step 4 The target BTS forwards this message through an HO DETECT message to the BSC and
sends a PHY INFO message to the MS.
Step 5 The MS sends a FIRST SABM frame to the target BTS and the target BTS sends an EST IND
message to the BSC, indicating that the MS has successfully accessed the target cell. The MS
also sends an HO CMP message to the BSC.
Step 6 The BSC sends an HO PERFORMED message to the MSC.
----End
The outgoing internal inter-cell handover is part of the internal inter-cell handover. It refers to
the internal inter-cell handover procedure performed in the source cell (the cell where the MS
is located before the handover). The source cell and the target cell (the cell where the MS is
located after the handover) can be two cells in a BTS or two cells in two BTSs controlled by
one BSC.
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Figure 11-14 shows the procedure of outgoing internal inter-cell handover (excluding directed
retry).
Figure 11-14 Outgoing internal inter-cell handover (excluding directed retry)
MS
BTS1(CELL1)
BSC
BTS1(CELLO)
MS
MSC
MR FROM MS
A
CHAN ACTIV
CHAN
ACTIV ACK
HO ACC
HO CMD
B
HO DETECT
PHY INFO
FIRST SABM
EST IND
HO CMP
HO PERFORMED
A: Outgoing Internal Inter-Cell Handover Requests (Excluding Directed Retry)
B: Outgoing Internal Inter-Cell Handover Commands (Excluding Directed Retry)
Outgoing internal inter-cell handover initiated by the assignment request sent from the
MSC (directed retry)
The procedure is as follows:
Step 1 When an MS needs to initiate a call, it sends a CHAN RQD message to the BSC through the
BTS.
Step 2 The BSC requests for an SDCCH or TCH signaling channel, and sends a CHAN ACTIV
message to the BTS. After receiving a CHAN ACTIV ACK message from the BTS, the BSC
sends the MS an IMM ASS CMD message on the signaling channel, requesting the MS to
access the network on this signaling channel.
Step 3 After receiving an EST IND message from the MS, the BSC encapsulates the CM SERV
REQ message carried in the EST IND message into the CR message and forwards it to the
MSC. After the MSC returns a CC message, the communication between the MS and the
MSC is established on the MM layer.
Step 4 After the messages CM SERV ACCEPT, SETUP, and CALL PROCEEDING are sent, the
MSC sends an ASS REQ message to the BSC and the BSC analyzes the information such as
cell load to select an assignment mode (normal assignment, mode modification, directed
retry). If current cell load is too high, the BSC decides to initiate a directed retry procedure.
Step 5 The BSC sends a CHAN ACTIV message to the target cell. After receiving a CHAN ACTIV
ACK message, the BSC requests for speech service resources.
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Step 6 If the request succeeds, the BSC sends an HO CMD message to the MS, and the MS sends an
HO ACC message to attempt to access a new cell.
Step 7 The BTS sends an HO DETECT message to the BSC and sends a PHY INFO message to the
MS.
Step 8 The MS sends a FIRST SABM to access the network. The BTS sends an EST IND message
to the BSC and a UA frame to the MS. The MS sends an HO CMP message to the BSC.
Step 9 The BSC sends an ASS CMP message to the MSC and completes other signaling processing.
----End
The outgoing internal inter-cell handover is part of the internal inter-cell handover procedure.
It refers to the handover procedure performed in the source cell (the cell where the MS is
located before the handover). The source cell and the target cell (the cell where the MS is
located after the handover) can be two cells in a BTS or two cells in two BTSs controlled by
one BSC.
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11 Call Measurement
Figure 11-15 Outgoing internal inter-cell handover (directed retry)
MS
BTS1(CELL1)
BSC
BTS2(CELLO)
MSC
MS
CHAN REQ
CHAN RED
CHAN ACTIV
CHAN
ACTIV ACK
IMM ASS CMD
FIRST SABM
UA
EST IND（CM
SERV REQ）
CR(CM
SERV REQ)
CC
CM SERV
ACCEPT
SETUP
CALL
PROCEEDING
ASSIGN REQ
A
CHAN ACTIV
CHAN ACTIV ACK
HO CMD
B
HO DETECT
EST IND
HO ACC
PHY INFO
FIRST SABM
UA
HO CMP
ASSIGN CMP
A: Outgoing Internal Inter-Cell Handover Requests (Directed Retry)
B: Outgoing Internal Inter-Cell Handover Commands (Directed Retry)
Table 11-40 lists the counter classification of Outgoing Internal Inter-Cell Handover
Measurement per Cell.
Table 11-40 Counter classification of Outgoing Internal Inter-Cell Handover Measurement per
Cell
11-104
Counter Classification
Section
Outgoing Internal Inter-Cell Handover Requests per Cell
11.12.2
Outgoing Internal Inter-Cell Handover Commands per Cell
11.12.3
Failed Outgoing Internal Inter-Cell Handovers per Cell
11.12.3
Outgoing Internal Inter-Cell Handover Measurement per Cell
11.12.5
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11.12.2 Outgoing Internal Inter-Cell Handover Requests per Cell
Counter
Table 11-41 lists the counters of Outgoing Internal Inter-Cell Handover Requests per Cell
(Excluding Directed Retry).
Table 11-41 Counters of Outgoing Internal Inter-Cell Handover Requests per Cell (Excluding
Directed Retry)
Number
Counter
1
H3100W: Outgoing Internal Inter-Cell Handover Requests (SDCCH)
(Excluding Directed Retry) (900/850-900/850)
2
H3100X: Outgoing Internal Inter-Cell Handover Requests (SDCCH)
(Excluding Directed Retry) (1800/1900-1800/1900)
3
H3100Y: Outgoing Internal Inter-Cell Handover Requests (SDCCH)
(Excluding Directed Retry) (900/850-1800/1900)
4
H3100Z: Outgoing Internal Inter-Cell Handover Requests (SDCCH)
(Excluding Directed Retry) (1800/1900-900/850)
5
H3107W: Outgoing Internal Inter-Cell Handover Requests (TCHF) (Excluding
Directed Retry) (900/850-900/850)
6
H3107X: Outgoing Internal Inter-Cell Handover Requests (TCHF) (Excluding
Directed Retry) (1800/1900-1800/1900)
7
H3107Y: Outgoing Internal Inter-Cell Handover Requests (TCHF) (Excluding
Directed Retry) (900/850-1800/1900)
8
H3107Z: Outgoing Internal Inter-Cell Handover Requests (TCHF) (Excluding
Directed Retry) (1800/1900-900/850)
9
H3108W: Outgoing Internal Inter-Cell Handover Requests (TCHH) (Excluding
Directed Retry) (900/850-900/850)
10
H3108X: Outgoing Internal Inter-Cell Handover Requests (TCHH) (Excluding
Directed Retry) (1800/1900-1800/1900)
11
H3108Y: Outgoing Internal Inter-Cell Handover Requests (TCHH) (Excluding
Directed Retry) (900/850-1800/1900)
12
H3108Z: Outgoing Internal Inter-Cell Handover Requests (TCHH) (Excluding
Directed Retry) (1800/1900-900/850)
13
H310A: Outgoing Internal Inter-Cell Handover Requests (Uplink Quality)
14
H310B: Outgoing Internal Inter-Cell Handover Requests (Downlink Quality)
15
H310C: Outgoing Internal Inter-Cell Handover Requests (Uplink Strength)
16
H310D: Outgoing Internal Inter-Cell Handover Requests (Downlink Strength)
17
H310E: Outgoing Internal Inter-Cell Handover Requests (Timing Advance)
18
H310F: Outgoing Internal Inter-Cell Handover Requests (Better Cell)
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Number
Counter
19
H310G: Outgoing Internal Inter-Cell Handover Requests (Load)
20
H310H: Outgoing Internal Inter-Cell Handover Requests (Rapid Level Drop)
21
H310I: Outgoing Internal Inter-Cell Handover Requests (MSC Intervention)
22
H310J: Outgoing Internal Inter-Cell Handover Requests (OM Intervention)
23
H310L: Outgoing Internal Inter-Cell Handover Requests (Other Causes)
Table 11-42 lists the counters of Outgoing Internal Inter-Cell Handover Requests per Cell
(Directed Retry).
Table 11-42 Counters of Outgoing Internal Inter-Cell Handover Requests per Cell (Directed Retry)
Number
Counter
1
H3101W: Outgoing Internal Inter-Cell Handover Requests (Directed Retry)
(900/850-900/850)
2
H3101X: Outgoing Internal Inter-Cell Handover Requests (Directed Retry)
(1800/1900-1800/1900)
3
H3101Y: Outgoing Internal Inter-Cell Handover Requests (Directed Retry)
(900/850-1800/1900)
4
H3101Z: Outgoing Internal Inter-Cell Handover Requests (Directed Retry)
(1800/1900-900/850)
Meaning
The descriptions of the counters are as follows
z
Outgoing Internal Inter-Cell Handover Requests (Excluding Directed Retry)
The BSC uses the handover algorithm to decide whether a handover is required or not
based on the measurement reports. If a handover is required and the source cell (current
cell) and the target cell are two cells controlled by one BSC, the BSC initiates an internal
inter-cell handover.
The counter measures the number of outgoing internal inter-cell handover requests
initiated by the BSC. The measurement is based on the channel type, the handover cause,
and the crossing of frequency bands.
Along with Outgoing Internal Inter-Cell Handover Commands per Cell and Failed
Outgoing Internal Inter-Cell Handovers per Cell, the counter shows the performance of
outgoing internal inter-cell handovers. Along with Incoming Internal Inter-Cell
Handover Measurement per Cell, the counter shows the performance of internal intercell handovers.
The channel involved in the measurement is of the following types:
11-106
−
SDCCH
−
TCHF
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TCHH
The handover causes consist of the following:
−
Uplink quality
−
Downlink quality
−
Uplink strength
−
Downlink strength
−
Timing advance
−
Better cell
−
Load
−
Rapid level drop
−
MSC intervention
−
OM intervention
−
Other causes
The crossing of frequency bands is of the following types:
z
−
900/850 to 900/850
−
1800/1900 to 1800/1900
−
900/850 to 1800/1900
−
1800/1900 to 900/850
Outgoing Internal Inter-Cell Handover Requests (Directed Retry)
When directed retry occurs in the assignment procedure and the source cell and the target
cell are two cells controlled by one BSC, the BSC sends an outgoing internal inter-cell
handover request to the MS. This counter measures the number of outgoing internal
inter-cell handover requests. The measurement is based on the crossing of frequency
bands.
Along with Outgoing Internal Inter-Cell Handover Commands per Cell and Failed
Outgoing Internal Inter-Cell Handovers per Cell, the counter shows the performance of
outgoing internal inter-cell handovers. Along with Incoming Internal Inter-Cell
Handover Measurement per Cell, the counter shows the performance of internal intercell handovers.
The crossing of frequency bands is of the following types:
−
900/850 to 900/850
−
1800/1900 to 1800/1900
−
900/850 to 1800/1900
−
1800/1900 to 900/850
Trigger Point
The trigger points of the counters are as follows:
z
Outgoing Internal Inter-Cell Handover Requests (Excluding Directed Retry)
As shown in Figure 11-14 (A), the measurement is triggered when the BSC decides to
initiate an outgoing internal inter-cell handover based on measurement reports. The
measurement is based on the channel type, the handover cause, and the crossing of
frequency bands.
z
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Outgoing Internal Inter-Cell Handover Requests (Directed Retry)
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As shown in Figure 11-15 (A), the measurement is triggered when the BSC initiates a
directed retry procedure. The measurement is based on the crossing of frequency bands.
Formula
None.
11.12.3 Outgoing Internal Inter-Cell Handover Commands per
Cell
Counter
Table 11-43 lists the counters of Outgoing Internal Inter-Cell Handover Commands per Cell
(Excluding Directed Retry).
Table 11-43 Counters of Outgoing Internal Inter-Cell Handover Commands per Cell (Excluding
Directed Retry)
11-108
Number
Counter
1
H3110W: Outgoing Internal Inter-Cell Handover Command (SDCCH)
(Excluding Directed Retry) (900/850-900/850)
2
H3110X: Outgoing Internal Inter-Cell Handover Commands (SDCCH)
(Excluding Directed Retry) (1800/1900-1800/1900)
3
H3110Y: Outgoing Internal Inter-Cell Handover Commands (SDCCH)
(Excluding Directed Retry) (900/850-1800/1900)
4
H3110Z: Outgoing Internal Inter-Cell Handover Commands (SDCCH)
(Excluding Directed Retry) (1800/1900-900/850)
5
H3117W: Outgoing Internal Inter-Cell Handover Commands (TCHF)
(Excluding Directed Retry) (900/850-900/850)
6
H3117X: Outgoing Internal Inter-Cell Handover Commands (TCHF)
(Excluding Directed Retry) (1800/1900-1800/1900)
7
H3117Y: Outgoing Internal Inter-Cell Handover Commands (TCHF)
(Excluding Directed Retry) (900/850-1800/1900)
8
H3117Z: Outgoing Internal Inter-Cell Handover Commands (TCHF)
(Excluding Directed Retry) (1800/1900-900/850)
9
H3118W: Outgoing Internal Inter-Cell Handover Commands (TCHH)
(Excluding Directed Retry) (900/850-900/850)
10
H3118X: Outgoing Internal Inter-Cell Handover Commands (TCHH)
(Excluding Directed Retry) (1800/1900-1800/1900)
11
H3118Y: Outgoing Internal Inter-Cell Handover Commands (TCHH)
(Excluding Directed Retry) (900/850-1800/1900)
12
H3118Z: Outgoing Internal Inter-Cell Handover Commands (TCHH)
(Excluding Directed Retry) (1800/1900-900/850)
13
H311A: Outgoing Internal Inter-Cell Handover Commands (Uplink Quality)
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Number
Counter
14
H311B: Outgoing Internal Inter-Cell Handover Commands (Downlink
Quality)
15
H311C: Outgoing Internal Inter-Cell Handover Commands (Uplink Strength)
16
H311D: Outgoing Internal Inter-Cell Handover Commands (Downlink
Strength)
17
H311E: Outgoing Internal Inter-Cell Handover Commands (Timing Advance)
18
H311F: Outgoing Internal Inter-Cell Handover Commands (Better Cell)
19
H311G: Outgoing Internal Inter-Cell Handover Commands (Load)
20
H311H: Outgoing Internal Inter-Cell Handover Commands (Rapid Level
Drop)
21
H311I: Outgoing Internal Inter-Cell Handover Commands (MSC Intervention)
22
H311J: Outgoing Internal Inter-Cell Handover Commands (OM Intervention)
23
H311L: Outgoing Internal Inter-Cell Handover Commands (Other Causes)
Table 11-44 lists the counters of Outgoing Internal Inter-Cell Handover Commands per Cell
(Directed Retry).
Table 11-44 Counters of Outgoing Internal Inter-Cell Handover Commands per Cell (Directed
Retry)
Number
Counter
1
H3111W: Outgoing Internal Inter-Cell Handover Commands (Directed Retry)
(900/850-900/850)
2
H3111X: Outgoing Internal Inter-Cell Handover Commands (Directed Retry)
(1800/1900-1800/1900)
3
H3111Y: Outgoing Internal Inter-Cell Handover Commands (Directed Retry)
(900/850-1800/1900)
4
H3111Z: Outgoing Internal Inter-Cell Handover Commands (Directed Retry)
(1800/1900-900/850)
Meaning
The descriptions of the counters are as follows:
z
Outgoing Internal Inter-Cell Handover Commands (Excluding Directed Retry)
In the outgoing internal inter-cell handover (excluding directed retry) procedure, the
BSC sends an HO CMD message to the MS. The measurement is performed in the
source cell. The measurement is based on channel type, the handover cause, and the
crossing of frequency bands.
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Along with Outgoing Internal Inter-Cell Handover Requests per Cell and Failed
Outgoing Internal Inter-Cell Handovers per Cell, the counter shows the performance of
outgoing internal inter-cell handovers. Along with Incoming Internal Inter-Cell
Handover Measurement per Cell, the counter shows the performance of internal intercell handovers.
The channel involved in the measurement is of the following types:
−
SDCCH
−
TCHF
−
TCHH
The handover causes consist of the following:
−
Uplink quality
−
Downlink quality
−
Uplink strength
−
Downlink strength
−
Timing advance
−
Better cell
−
Load
−
Rapid level drop
−
MSC intervention
−
OM intervention
−
EDGE coverage
−
Other causes
The crossing of frequency bands is of the following types:
z
−
900/850 to 900/850
−
1800/1900 to 1800/1900
−
900/850 to 1800/1900
−
1800/1900 to 900/850
Outgoing Internal Inter-Cell Handover Commands (Directed Retry)
In the outgoing internal inter-cell handover (directed retry) procedure, the BSC sends an
HO CMD message to the MS through the source cell. The measurement is performed in
the source cell. The measurement is based on the crossing of frequency bands.
Along with Outgoing Internal Inter-Cell Handover Requests per Cell and Failed
Outgoing Internal Inter-Cell Handovers per Cell, the counter shows the performance of
outgoing internal inter-cell handovers. Along with Incoming Internal Inter-Cell
Handover Measurement per Cell, the counter shows the performance of internal intercell handovers.
The crossing of frequency bands is of the following types:
11-110
−
900/850 to 900/850
−
1800/1900 to 1800/1900
−
900/850 to 1800/1900
−
1800/1900 to 900/850
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Trigger Point
The trigger points of the counters are as follows:
z
Outgoing Internal Inter-Cell Handover Commands (Excluding Directed Retry)
As shown in Figure 11-14 (B), the measurement is triggered when the BSC sends an HO
CMD message to the MS through the source cell in the outgoing internal inter-cell
handover (excluding directed retry) procedure. The measurement is based on channel
type, the handover cause, and the crossing of frequency bands.
z
Outgoing Internal Inter-Cell Handover Commands (Directed Retry)
As shown in Figure 11-15 (B), the measurement is triggered when the BSC sends an HO
CMD message to the MS through the source cell in the outgoing internal inter-cell
handover (directed retry) procedure.
Formula
None.
11.12.4 Failed Outgoing Internal Inter-Cell Handovers per Cell
Counter
Based on the procedure where the trigger points are located, the counters of Failed Outgoing
Internal Inter-Cell Handovers per Cell can be classified into the following groups:
z
Failed Outgoing Internal Inter-Cell Handovers per Cell (Excluding Directed Retry)
z
Failed Outgoing Internal Inter-Cell Handovers per Cell (Directed Retry)
z
Failed Outgoing Internal Inter-Cell Handovers per Cell (Including Directed Retry)
Table 11-45 lists the counters of Failed Outgoing Internal Inter-Cell Handovers per Cell
(Excluding Directed Retry).
Table 11-45 Counters of Failed Outgoing Internal Inter-Cell Handovers per Cell (Excluding
Directed Retry)
Number
Counter
1
H3120W: Failed Outgoing Internal Inter-Cell Handovers (SDCCH)
(Excluding Directed Retry) (900/850-900/850)
2
H3120X: Failed Outgoing Internal Inter-Cell Handovers (SDCCH)
(Excluding Directed Retry) (1800/1900-1800/1900)
3
H3120Y: Failed Outgoing Internal Inter-Cell Handovers (SDCCH)
(Excluding Directed Retry) (900/850-1800/1900)
4
H3120Z: Failed Outgoing Internal Inter-Cell Handovers (SDCCH)
(Excluding Directed Retry) (1800/1900-900/850)
5
H3127W: Failed Outgoing Internal Inter-Cell Handovers (TCHF) (Excluding
Directed Retry) (900/850-900/850)
6
H3127X: Failed Outgoing Internal Inter-Cell Handovers (TCHF) (Excluding
Directed Retry) (1800/1900-1800/1900)
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11-112
Number
Counter
7
H3127Y: Failed Outgoing Internal Inter-Cell Handovers (TCHF) (Excluding
Directed Retry) (900/850-1800/1900)
8
H3127Z: Failed Outgoing Internal Inter-Cell Handovers (TCHF) (Excluding
Directed Retry) (1800/1900-900/850)
9
H3128W: Failed Outgoing Internal Inter-Cell Handovers (TCHH)
(Excluding Directed Retry) (900/850-900/850)
10
H3128X: Failed Outgoing Internal Inter-Cell Handovers (TCHH) (Excluding
Directed Retry) (1800/1900-1800/1900)
11
H3128Y: Failed Outgoing Internal Inter-Cell Handovers (TCHH) (Excluding
Directed Retry) (900/850-1800/1900)
12
H3128Z: Failed Outgoing Internal Inter-Cell Handovers (TCHH) (Excluding
Directed Retry) (1800/1900-900/850)
13
H3120C: Failed Outgoing Internal Inter-Cell Handovers (Timer Expired)
(SDCCH) (Excluding Directed Retry)
14
H312Da: Failed Outgoing Internal Inter-Cell Handovers (Reconnection to
Old Channels) (Abnormal Release, Unspecified)
15
H312Db: Failed Outgoing Internal Inter-Cell Handovers (Reconnection to
Old Channels) (Abnormal Release, Channel Unacceptable)
16
H312Dc: Failed Outgoing Internal Inter-Cell Handovers (Reconnection to
Old Channels) (Abnormal Release, Timer Expired)
17
H312Dd: Failed Outgoing Internal Inter-Cell Handovers (Reconnection to
Old Channels) (Abnormal Release, No Activity on the Radio Path)
18
H312De: Failed Outgoing Internal Inter-Cell Handovers (Reconnection to
Old Channels) (Preemptive Release)
19
H312Df: Failed Outgoing Internal Inter-Cell Handovers (Reconnection to
Old Channels) (Handover Failed, Timing Advance out of Range)
20
H312Dg: Failed Outgoing Internal Inter-Cell Handovers (Reconnection to
Old Channels) (Channel Mode Unavailable)
21
H312Dh: Failed Outgoing Internal Inter-Cell Handovers (Reconnection to
Old Channels) (Frequency Unavailable)
22
H312Di: Failed Outgoing Internal Inter-Cell Handovers (Reconnection to
Old Channels) (Call Already Cleared)
23
H312Dj: Failed Outgoing Internal Inter-Cell Handovers (Reconnection to
Old Channels) (Semantically Incorrect Message)
24
H312Dk: Failed Outgoing Internal Inter-Cell Handovers (Reconnection to
Old Channels) (Invalid Mandatory Information)
25
H312Dl: Failed Outgoing Internal Inter-Cell Handovers (Reconnection to
Old Channels) (Message Type Non-existent or Not Implemented)
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Number
Counter
26
H312Dm: Failed Outgoing Internal Inter-Cell Handovers (Reconnection to
Old Channels) (Message Type Not Compatible with Protocol State)
27
H312Dn: Failed Outgoing Internal Inter-Cell Handovers (Reconnection to
Old Channels) (Conditional IE Error)
28
H312Do: Failed Outgoing Internal Inter-Cell Handovers (Reconnection to
Old Channels) (No Cell Allocation Available)
29
H312Dp: Failed Outgoing Internal Inter-Cell Handovers (Reconnection to
Old Channels) (Protocol Error Unspecified)
30
H312Dq: Failed Outgoing Internal Inter-Cell Handovers (Reconnection to
Old Channels) (Other Causes)
Table 11-46 lists the counters of Failed Outgoing Internal Inter-Cell Handovers per Cell
(Directed Retry).
Table 11-46 Counters of Failed Outgoing Internal Inter-Cell Handovers per Cell (Directed Retry)
Number
Counter
1
H3121W: Failed Outgoing Internal Inter-Cell Handovers (Directed Retry)
(900/850-900/850)
2
H3121X: Failed Outgoing Internal Inter-Cell Handovers (Directed Retry)
(1800/1900-1800/1900)
3
H3121Y: Failed Outgoing Internal Inter-Cell Handovers (Directed Retry)
(900/850-1800/1900)
4
H3121Z: Failed Outgoing Internal Inter-Cell Handovers (Directed Retry)
(1800/1900-900/850)
5
H3121C: Failed Outgoing Internal Inter-Cell Handovers (Timer Expired)
(Directed Retry)
Failed Outgoing Internal Inter-Cell Handovers per Cell (Including Directed Retry) refers the
failed outgoing internal inter-cell handovers initiated by measurement reports or directed retry.
Table 11-47 lists the counters of Failed Outgoing Internal Inter-Cell Handovers per Cell
(Including Directed Retry)
Table 11-47 Counters of Failed Outgoing Internal Inter-Cell Handovers per Cell (Including
Directed Retry)
Number
Counter
1
H312A: Failed Outgoing Internal Inter-Cell Handovers (Channel Unavailable)
2
H312B: Failed Outgoing Internal Inter-Cell Handovers (Terrestrial Resource
Request Failed)
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Number
Counter
3
H312G: Failed Outgoing Internal Inter-Cell Handovers (A-Interface Failure)
4
H3127Cb: Failed Outgoing Internal Inter-Cell Handovers (Timer Expired)
(TCHF) (Signaling Channel)
5
H3128Cb: Failed Outgoing Internal Inter-Cell Handovers (Timer Expired)
(TCHH) (Signaling Channel)
6
H3127Ca: Failed Outgoing Internal Inter-Cell Handovers (Timer Expired)
(TCHF) (Traffic Channel)
7
H3128Ca: Failed Outgoing Internal Inter-Cell Handovers (Timer Expired)
(TCHH) (Traffic Channel)
8
H3122A: Failed Outgoing Internal Inter-Cell Handovers (Uplink Quality)
9
H3122B: Failed Outgoing Internal Inter-Cell Handovers (Downlink Quality)
10
H3122C: Failed Outgoing Internal Inter-Cell Handovers (Uplink Strength)
11
H3122D: Failed Outgoing Internal Inter-Cell Handovers (Downlink Strength)
12
H3122E: Failed Outgoing Internal Inter-Cell Handovers (Timing Advance)
13
H3122F: Failed Outgoing Internal Inter-Cell Handovers (Better Cell)
14
H3122G: Failed Outgoing Internal Inter-Cell Handovers (Load)
15
H3122H: Failed Outgoing Internal Inter-Cell Handovers (Rapid Level Drop)
16
H3122I: Failed Outgoing Internal Inter-Cell Handovers (MSC Intervention)
17
H3122J: Failed Outgoing Internal Inter-Cell Handovers (OM Intervention)
18
H3122L: Failed Outgoing Internal Inter-Cell Handovers (Other Causes)
Meaning
The descriptions of the counters are as follows:
z
Failed Outgoing Internal Inter-Cell Handovers per Cell (Excluding Directed Retry)
In the outgoing internal inter-cell handover (excluding directed retry) procedure, when
the outgoing internal inter-cell handover fails because errors occur before the BSC
receives an HO CMP message or before the timer that is set to wait for the HO CMP
message expires, the BSC measures the counters. The measurement is based on the
channel type, the failure cause, the handover cause, and the crossing of frequency bands.
Along with Outgoing Internal Inter-Cell Handover Requests per Cell and Outgoing
Internal Inter-Cell Handover Commands per Cell, the counters show the performance of
outgoing internal inter-cell handovers. Along with Incoming Internal Inter-Cell
Handover Measurement per Cell, the counters show the performance of internal intercell handovers.
The channel involved in the measurement is of the following types:
11-114
−
SDCCH
−
TCHF
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TCHH
The failure causes include the following:
−
Channel unavailable
−
Terrestrial resource request failure
−
A-Interface Failure
−
MSC Intervention
−
Timer Expired
−
Reconnection to Old Channels
−
Congestion
The handover causes consist of the following:
−
Uplink quality
−
Downlink quality
−
Uplink strength
−
Downlink strength
−
Timing advance
−
Better cell
−
Load
−
Rapid level drop
−
MSC intervention
−
OM intervention
−
EDGE coverage
−
Other causes
The crossing of frequency bands is of the following types:
z
−
900/850 to 900/850
−
1800/1900 to 1800/1900
−
900/850 to 1800/1900
−
1800/1900 to 900/850
Failed Outgoing Internal Inter-Cell Handovers per Cell (Directed Retry)
In the outgoing internal inter-cell handover (directed retry) procedure, when the outgoing
internal inter-cell handover fails because errors occur before the BSC receives an HO
CMP message or before the timer that is set to wait for the HO CMP message expires,
the BSC measures the counters. The measurement is based on the channel type, the
failure cause, the handover cause, and the crossing of frequency bands.
Along with Outgoing Internal Inter-Cell Handover Requests per Cell and Outgoing
Internal Inter-Cell Handover Commands per Cell, the counters show the performance of
outgoing internal inter-cell handovers. Along with Incoming Internal Inter-Cell
Handover Measurement per Cell, the counters show the performance of internal intercell handovers.
The channel involved in the measurement is of the following types:
−
TCHF
−
TCHH
The failure causes include the following:
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−
Channel unavailable
−
Terrestrial resource request failure
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
11 Call Measurement
−
A-Interface Failure
−
MSC Intervention
−
Timer Expired
The handover causes consist of the following:
−
Uplink quality
−
Downlink quality
−
Uplink strength
−
Downlink strength
−
Timing advance
−
Better cell
−
Load
−
Rapid level drop
−
MSC intervention
−
OM intervention
−
EDGE coverage
−
Other causes
The crossing of frequency bands is of the following types:
11-116
−
900/850 to 900/850
−
1800/1900 to 1800/1900
−
900/850 to 1800/1900
−
1800/1900 to 900/850
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11 Call Measurement
Trigger Point
Figure 11-16 and Figure 11-17 show the trigger points of the counters of Failed Outgoing
Internal Inter-Cell Handovers per Cell (Excluding Directed Retry) and Failed Outgoing
Internal Inter-Cell Handovers per Cell (Directed Retry).
Figure 11-16 Trigger points of the counters of Failed Outgoing Internal Inter-Cell Handovers per
Cell (Excluding Directed Retry)
MS
BTS1(CELL1)
BSC
BTS1(CELLO)
MS
MSC
MR FROM MS
A
B
In the
outgoing
internal
inter-cell
handover
procedure
CHAN ACTIV
CHAN ACTIV
ACK
C
HO ACC
HO CMD
HO DETECT
PHY INFO
D
FIRST SABM
EST IND
E
F
I
G
H
HO CMP
HO PERFORMED
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Figure 11-17 Trigger points of the counters of Failed Outgoing Internal Inter-Cell Handovers per Cell (Directed Retry)
MS
BTS1(CELL1)
MSC
BSC
BTS2(CELLO)
MS
CHAN REQ
CHAN RED
CHANACTIV
CHAN
ACTIV ACK
IMM ASS CMD
FIRST SABM
UA
EST IND（CM
SERV REQ ）
CR(CM
SERV REQ)
CC
CM SERV
ACCEPT
SETUP
CALL
PROCEEDING
ASSIGNREQ
In the outgoing
internal inter-cell
handover
procedure
A
B
CHANACTIV
CHAN ACTIV ACK
C
HO CMD
HO DETECT
EST IND
TIME OUT
HO ACC
PHY INFO
D
E
FIRST SABM
UA
J
G
F
HO CMP
ASSIGNCMP
A: Failed Outgoing Internal Inter-Cell Handovers (Channel Unavailable)
B: Failed Outgoing Internal Inter-Cell Handovers (Congestion)
C: Failed Outgoing Internal Inter-Cell Handovers (Terrestrial Resource Request Failed)
D: Failed Outgoing Internal Inter-Cell Handovers (A-Interface Failure)
E: Failed Outgoing Internal Inter-Cell Handovers (Clear Commands Sent by MSC)
F: Failed Outgoing Internal Inter-Cell Handovers (Timer Expired)
G: Failed Outgoing Internal Inter-Cell Handovers (Handover Causes)
H: Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels)
I: Failed Outgoing Internal Inter-Cell Handovers (Excluding Directed Retry)
J: Failed Outgoing Internal Inter-Cell Handovers (Directed Retry)
z
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As shown in Figure 11-16, in the outgoing internal inter-cell handover (excluding
directed retry) procedure, the measurement is triggered when the handover fails before
the MS successfully accesses the target cell and before the handover completed timer
expires. The measurement is based on the channel type and the crossing of frequency
bands.
The channel involved in the measurement is of the following types:
−
SDCCH
−
TCHF
−
TCHH
The crossing of frequency bands is of the following types:
z
−
900/850 to 900/850
−
1800/1900 to 1800/1900
−
900/850 to 1800/1900
−
1800/1900 to 900/850
Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels,
Excluding Directed Retry)
As shown in Figure 11-16, in the outgoing internal inter-cell handover procedure, the
BSC sends an HO CMD message to the MS through the source cell and initiates a timer
to wait for an HO CMP message. The measurement is triggered when the MS reconnects
to the old channel and sends an HO FAIL message on the old channel. The measurement
is based on the failure cause.
The failure causes consist of the following:
z
−
Abnormal release, unspecified
−
Abnormal release, channel unacceptable
−
Abnormal release, timer expired
−
Abnormal release, no activity on the radio path
−
Preemptive release
−
Handover failed, timing advance out of range
−
Channel mode unavailable
−
Frequency unavailable
−
Call already cleared
−
Semantically incorrect message
−
Invalid mandatory information
−
Message type non-existent or not implemented
−
Message type not compatible with protocol state
−
Conditional IE error
−
No cell allocation available
−
Protocol error unspecified
−
Other causes
Failed Outgoing Internal Inter-Cell Handovers (Directed Retry)
As shown in Figure 11-17, in the outgoing internal inter-cell handover (directed retry)
procedure, the measurement is triggered when the handover fails before the MS
successfully accesses the target cell and before the handover completed timer expires.
The measurement is based on the crossing of frequency bands.
The crossing of frequency bands is of the following types:
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z
−
900/850 to 900/850
−
1800/1900 to 1800/1900
−
900/850 to 1800/1900
−
1800/1900 to 900/850
Failed Outgoing Internal Inter-Cell Handovers (Channel Unavailable)
As shown in Figure 11-16 and Figure 11-17, in the outgoing internal inter-cell handover
(including directed retry) procedure, the measurement is triggered when the channel
request fails and the failure cause is no channel available.
z
Failed Outgoing Internal Inter-Cell Handovers (Terrestrial Resource Request Failed)
As shown in Figure 11-16 and Figure 11-17, in the outgoing internal inter-cell handover
(including directed retry) procedure, the measurement is triggered when the net-drive
fails.
z
Failed Outgoing Internal Inter-Cell Handovers (A-Interface Failure)
As shown in Figure 11-16 and Figure 11-17, in the outgoing internal inter-cell handover
(including directed retry) procedure, the measurement is triggered when an A interface
failure message is received from the MSC.
z
Failed Outgoing Internal Inter-Cell Handovers (Clear Commands Sent by MSC)
As shown in Figure 11-16 and Figure 11-17, in the outgoing internal inter-cell handover
(including directed retry) procedure, the measurement is triggered when a clear
command is received from the MSC.
z
Failed Outgoing Internal Inter-Cell Handovers (Timer Expired)
As shown in Figure 11-16 and Figure 11-17, in the outgoing internal inter-cell handover
(including directed retry) procedure, the measurement is triggered when the handover
completed timer expires.
z
Failed Outgoing Internal Inter-Cell Handovers (Handover Causes)
As shown in Figure 11-16 and Figure 11-17, in the outgoing internal inter-cell handover
(including directed retry) procedure, the measurement is triggered when the handover
fails due to abnormal factors. The measurement is based on handover causes.
The handover causes consist of the following:
z
−
Uplink quality
−
Downlink quality
−
Uplink strength
−
Downlink strength
−
Timing advance
−
Better cell
−
Load
−
Rapid level drop
−
MSC intervention
−
OM intervention
−
EDGE coverage
−
Other causes
Failed Outgoing Internal Inter-Cell Handovers (Congestion)
As shown in Figure 11-16 and Figure 11-17, in the outgoing internal inter-cell handover
(Including Directed Retry) procedure, the measurement is triggered when the channel
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11 Call Measurement
request fails because of the target cell congestion. The measurement is based on the
causes of congestion.
The causes of congestion consist of the following:
−
Uplink quality
−
Downlink quality
−
Uplink strength
−
Downlink strength
−
Timing advance
−
Better cell
−
Load
−
Rapid level drop
−
MSC intervention
−
OM intervention
−
Directed retry
−
Minimum timing advance
−
Other causes
Formula
None.
11.12.5 Outgoing Internal Inter-Cell Handover Measurement per
Cell
Counter
Table 11-48 lists the counters of Outgoing Internal Inter-Cell Handover Measurement per Cell.
Table 11-48 Counters of Outgoing Internal Inter-Cell Handover Measurement per Cell
Number
Counter
1
CH310: Outgoing Internal Inter-Cell Handover Requests
2
CH313: Successful Outgoing Internal Inter-Cell Handover
3
CH312: Failed Outgoing Internal Inter-Cell Handovers
4
TH313: Success Rate of Outgoing Internal Inter-Cell Handover
5
CH311: Outgoing Internal Inter-Cell Handover Commands
6
CH312C: Failed Outgoing Internal Inter-Cell Handovers (Timer Expired)
7
CH312D: Failed Outgoing Internal Inter-Cell Handovers (Reconnection to
Old Channels)
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Meaning
None.
Trigger Point
None.
Formula
Outgoing Internal Inter-Cell Handover Requests =
[Outgoing Internal Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry)
(900/850-900/850)] +
[Outgoing Internal Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry)
(1800/1900-1800/1900)] +
[Outgoing Internal Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Outgoing Internal Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Outgoing Internal Inter-Cell Handover Requests (TCHF) (Excluding Directed Retry)
(900/850-900/850)] +
[Outgoing Internal Inter-Cell Handover Requests (TCHF) (Excluding Directed Retry)
(1800/1900-1800/1900)] +
[Outgoing Internal Inter-Cell Handover Requests (TCHF) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Outgoing Internal Inter-Cell Handover Requests (TCHF) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Outgoing Internal Inter-Cell Handover Requests (TCHH) (Excluding Directed Retry)
(900/850-900/850)] +
[Outgoing Internal Inter-Cell Handover Requests (TCHH) (Excluding Directed Retry)
(1800/1900-1800/1900)] +
[Outgoing Internal Inter-Cell Handover Requests (TCHH) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Outgoing Internal Inter-Cell Handover Requests (TCHH) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Outgoing Internal Inter-Cell Handover Requests (Directed Retry) (900/850-900/850)] +
[Outgoing Internal Inter-Cell Handover Requests (Directed Retry) (1800/1900-1800/1900)] +
[Outgoing Internal Inter-Cell Handover Requests (Directed Retry) (900/850-1800/1900)] +
[Outgoing Internal Inter-Cell Handover Requests (Directed Retry) (1800/1900-900/850)]
Successful Outgoing Internal Inter-Cell Handover =
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[Outgoing Internal Inter-Cell Handover Requests] -[Failed Outgoing Internal Inter-Cell
Handovers]
Failed Outgoing Internal Inter-Cell Handovers =
[Failed Outgoing Internal Inter-Cell Handovers (SDCCH) (Excluding Directed Retry)
(900/850-900/850)] +
[Failed Outgoing Internal Inter-Cell Handovers (SDCCH) (Excluding Directed Retry)
(1800/1900-1800/1900)] +
[Failed Outgoing Internal Inter-Cell Handovers (SDCCH) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Failed Outgoing Internal Inter-Cell Handovers (SDCCH) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Failed Outgoing Internal Inter-Cell Handovers (TCHF) (Excluding Directed Retry) (900/850900/850)] +
[Failed Outgoing Internal Inter-Cell Handovers (TCHF) (Excluding Directed Retry)
(1800/1900-1800/1900)] +
[Failed Outgoing Internal Inter-Cell Handovers (TCHF) (Excluding Directed Retry) (900/8501800/1900)] +
[Failed Outgoing Internal Inter-Cell Handovers (TCHF) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Failed Outgoing Internal Inter-Cell Handovers (TCHH) (Excluding Directed Retry)
(900/850-900/850)] +
[Failed Outgoing Internal Inter-Cell Handovers (TCHH) (Excluding Directed Retry)
(1800/1900-1800/1900)] +
[Failed Outgoing Internal Inter-Cell Handovers (TCHH) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Failed Outgoing Internal Inter-Cell Handovers (TCHH) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Failed Outgoing Internal Inter-Cell Handovers (Directed Retry) (900/850-900/850)] +
[Failed Outgoing Internal Inter-Cell Handovers (Directed Retry) (1800/1900-1800/1900)] +
[Failed Outgoing Internal Inter-Cell Handovers (Directed Retry) (900/850-1800/1900)] +
[Failed Outgoing Internal Inter-Cell Handovers (Directed Retry) (1800/1900-900/850)]
Success Rate of Outgoing Internal Inter-Cell Handover =
[Successful Outgoing Internal Inter-Cell Handover]*{100}/[Outgoing Internal Inter-Cell
Handover Requests]
Outgoing Internal Inter-Cell Handover Commands =
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Performance Counter Reference
[Outgoing Internal Inter-Cell Handover Commands (SDCCH) (Excluding Directed Retry)
(900/850-900/850)] +
[Outgoing Internal Inter-Cell Handover Commands (SDCCH) (Excluding Directed Retry)
(1800/1900-1800/1900)] +
[Outgoing Internal Inter-Cell Handover Commands (SDCCH) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Outgoing Internal Inter-Cell Handover Commands (SDCCH) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Outgoing Internal Inter-Cell Handover Commands (TCHF) (Excluding Directed Retry)
(900/850-900/850)] +
[Outgoing Internal Inter-Cell Handover Commands (TCHF) (Excluding Directed Retry)
(1800/1900-1800/1900)] +
[Outgoing Internal Inter-Cell Handover Commands (TCHF) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Outgoing Internal Inter-Cell Handover Commands (TCHF) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Outgoing Internal Inter-Cell Handover Commands (TCHH) (Excluding Directed Retry)
(900/850-900/850)] +
[Outgoing Internal Inter-Cell Handover Commands (TCHH) (Excluding Directed Retry)
(1800/1900-1800/1900)] +
[Outgoing Internal Inter-Cell Handover Commands (TCHH) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Outgoing Internal Inter-Cell Handover Commands (TCHH) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Outgoing Internal Inter-Cell Handover Commands (Directed Retry) (900/850-900/850)] +
[Outgoing Internal Inter-Cell Handover Commands (Directed Retry) (1800/1900-1800/1900)]
+
[Outgoing Internal Inter-Cell Handover Commands (Directed Retry) (900/850-1800/1900)] +
[Outgoing Internal Inter-Cell Handover Commands (Directed Retry) (1800/1900-900/850)]
Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) =
[Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (SDCCH) (Excluding
Directed Retry)] +
[Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (TCHF) (Signaling Channel)]
+
[Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (TCHH) (Signaling Channel)]
+
[Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (TCHF) (Traffic Channel)] +
[Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (TCHH) (Traffic Channel)] +
[Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (Directed Retry)]
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Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) =
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (Abnormal
Release, Unspecified)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (Abnormal
Release, Channel Unacceptable)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (Abnormal
Release, Timer Expired)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (Abnormal
Release, No Activity on the Radio Path)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (Preemptive
Release)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (Handover
Failed, Timing Advance out of Range)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (Channel
Mode Unavailable)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (Frequency
Unavailable)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (Call Already
Cleared)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels)
(Semantically Incorrect Message)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (Invalid
Mandatory Information)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (Message
Type Non-existent or Not Implemented)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (Message
Type Not Compatible with Protocol State)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (Conditional
IE Error)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (No Cell
Allocation Available)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (Protocol
Error Unspecified)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (Other
Causes)]
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11.13 Incoming External Inter-Cell Handover
Measurement per Cell
11.13.1 Overview
After the BSC receives measurement reports from the MS, it uses the handover algorithm to
decide whether a handover is required or not on the basis of the factors such as the cell load,
signal quality, signal interference, and measurement reports. If a handover is required and the
source cell (current cell) and the target cell are controlled by two BSCs, an external inter-cell
handover is initiated.
The incoming external inter-cell handover is part of the external inter-cell handover. It refers
to the external inter-cell handover performed in the target cell.
In the following topics, the BSC where the source cell is located is called BSC1 and the BSC where the
target cell is located is called BSC2. The BTS where the source cell is located is called BTS1 and the
BTS where the target cell is located is called BTS2
The external inter-cell handover procedure is as follows:
Step 1 The handover algorithm in BSC1 notifies BSC1 to initiate an external inter-cell handover
based on the factors such as the measurement reports received from the MS, current cell load,
and the cell load of the neighbor cell.
Step 2 BSC1 sends the MSC an HO RQD message, requesting the MSC of the target cell.
Step 3 Based on the target cell, the MSC finds BSC2 and sends an HO REQ message to BSC2.
Step 4 BSC2 requests for a traffic channel from the target cell. After the request succeeds, BSC2
sends a CHAN ACTIV message to the target cell. After receiving a CHAN ACTIV ACK
message from the target cell, BSC2 requests for speech service resources.
Step 5 After the request succeeds, BSC2 sends the MSC an HO REQ ACK message to notify the
MSC that the target cell is ready for the MS access.
Step 6 The MSC sends an HO CMD message to BSC1 and BSC1 forwards this message to the MS.
This message is used to request the MS to access the target cell.
Step 7 The MS sends the target cell an HO ACC message to attempt to access the new cell. BTS2
sends an HO DETECT message to BSC2 and a PHY INFO message to the MS.
Step 8 The MS sends a FIRST SABM frame to BTS2. After receiving this frame, BTS2 sends an
EST IND message to BSC2 and returns a UA frame to the MS.
Step 9 After the MS accesses the target cell, it sends an HO CMP message to BSC2 and BSC2
forwards this message to the MSC.
Step 10 The MSC sends a CLR CMD message to BSC1 and the BSC1 releases the terrestrial
resources in the source cell.
Step 11 BSC1 sends a CLR CMP message to the MSC.
----End
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The measurement of the incoming external inter-cell handover is performed in the target cell.
Figure 11-18 shows the incoming external inter-cell handover.
Figure 11-18 Incoming external inter-cell handover
MS
BTS1
BSC1
BSC2
MSC
MS
BTS2
MR FROM MS
HO RQD
HO REQ
A
CHAN ACTIV
CHAN
ACTIV ACK
HO REQ ACK
HO CMD
B
HO CMD
HO ACC
HO DETECT
HO DETECT
PHY INFO
FIRST SABM
EST IND
UA
HO CMP
HO CMP
CLR CMD
CLR CMP
A: Incoming external inter-cell handover requests
B: Incoming external inter-cell handover responses
Table 11-49 lists the counter classification of Incoming External Inter-Cell Handover
Measurement per Cell.
Table 11-49 Counter classification of Incoming External Inter-Cell Handover Measurement per
Cell
Counter Classification
Section
Incoming External Inter-Cell Handover Requests per Cell
11.13.2
Incoming External Inter-Cell Handover Responses per Cell
11.13.3
Failed Incoming External Inter-Cell Handovers per Cell
11.13.4
Incoming External Inter-Cell Handover Detection Messages Received by BSC
per Cell
11.13.5
Incoming External Inter-Cell Handover Analyzed Measurement per Cell
11.13.6
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11.13.2 Incoming External Inter-Cell Handover Requests per Cell
Counter
Table 11-50 lists the counters of Incoming External Inter-Cell Handover Requests per Cell.
Table 11-50 Counters of Incoming External Inter-Cell Handover Requests per Cell
11-128
Number
Counter
1
H3400W: Incoming External Inter-Cell Handover Requests (SDCCH)
(900/850-900/850)
2
H3400X: Incoming External Inter-Cell Handover Requests (SDCCH)
(1800/1900-1800/1900)
3
H3400Y: Incoming External Inter-Cell Handover Requests (SDCCH)
(900/850-1800/1900)
4
H3400Z: Incoming External Inter-Cell Handover Requests (SDCCH)
(1800/1900-900/850)
5
H3409W: Incoming External Inter-Cell Handover Requests (TCH) (900/850900/850)
6
H3409X: Incoming External Inter-Cell Handover Requests (TCH)
(1800/1900-1800/1900)
7
H3409Y: Incoming External Inter-Cell Handover Requests (TCH) (900/8501800/1900)
8
H3409Z: Incoming External Inter-Cell Handover Requests (TCH)
(1800/1900-900/850)
9
H3401B: Incoming External Inter-Cell Handover TCH Requests (TCHF
Only)
10
H3401C: Incoming External Inter-Cell Handover TCH Requests (TCHH
Only)
11
H3401D: Incoming External Inter-Cell Handover TCH Requests (TCHF
Preferred, Channel Type Unchangeable)
12
H3401E: Incoming External Inter-Cell Handover TCH Requests (TCHH
Preferred, Channel Type Unchangeable)
13
H3401G: Incoming External Inter-Cell Handover TCH Requests (TCHF
Preferred, Channel Type Changeable)
14
H3401H: Incoming External Inter-Cell Handover TCH Requests (TCHH
Preferred, Channel Type Changeable)
15
H3401F: Incoming External Inter-Cell Handover TCH Requests (TCHF or
TCHH, Channel Type Unchangeable)
16
H3401I: Incoming External Inter-Cell Handover TCH Requests (TCHF or
TCHH, Channel Type Changeable)
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Meaning
The handover algorithm in BSC1 notifies BSC1 to initiate an inter-cell handover. If the source
cell and the target cell are controlled by two BSCs, an external inter-cell handover is initiated.
The measurement is performed in the target cell. The measurement is based on the channel
type, the crossing of frequency bands, and the TCH seizure type.
Along with Incoming External Inter-Cell Handover Responses per Cell and Failed Incoming
External Inter-Cell Handovers per Cell, the counters show the performance of incoming
external inter-cell handovers. Along with Outgoing External Inter-Cell Handover
Measurement per Cell, the counters show the performance of external inter-cell handovers.
The channel involved in the measurement is of the following types:
z
SDCCH
z
TCH
The crossing of frequency bands is of the following types:
z
900/850 to 900/850
z
1800/1900 to 1800/1900
z
900/850 to 1800/1900
z
1800/1900 to 900/850
The TCH seizure is of the following types:
TCHF only
TCHH only
TCHF preferred, channel type unchangeable
TCHH preferred, channel type unchangeable
TCHF preferred, channel type changeable
TCHH Preferred, Channel Type Changeable
TCHF or TCHH, Channel Type Unchangeable
TCHF or TCHH, Channel Type Changeable
Trigger Point
As shown in Figure 11-18 (A), the measurement is triggered when BSC2 receives an HO
REQ message from the MSC. The measurement is based on the channel type, the crossing of
frequency bands, and the TCH seizure type.
Formula
None.
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11.13.3 Incoming External Inter-Cell Handover Responses per
Cell
Counter
Table 11-51 lists the counters of Incoming External Inter-Cell Handover Responses per Cell.
Table 11-51 Counters of Incoming External Inter-Cell Handover Responses per Cell
Number
Counter
1
H3410W: Incoming External Inter-Cell Handover Responses (SDCCH)
(900/850-900/850)
2
H3410X: Incoming External Inter-Cell Handover Responses (SDCCH)
(1800/1900-1800/1900)
3
H3410Y: Incoming External Inter-Cell Handover Responses (SDCCH)
(900/850-1800/1900)
4
H3410Z: Incoming External Inter-Cell Handover Responses (SDCCH)
(1800/1900-900/850)
5
H3417W: Incoming External Inter-Cell Handover Responses (TCHF)
(900/850-900/850)
6
H3417X: Incoming External Inter-Cell Handover Responses (TCHF)
(1800/1900-1800/1900)
7
H3417Y: Incoming External Inter-Cell Handover Responses (TCHF)
(900/850-1800/1900)
8
H3417Z: Incoming External Inter-Cell Handover Responses (TCHF)
(1800/1900-900/850)
9
H3418W: Incoming External Inter-Cell Handover Responses (TCHH)
(900/850-900/850)
10
H3418X: Incoming External Inter-Cell Handover Responses (TCHH)
(1800/1900-1800/1900)
11
H3418Y: Incoming External Inter-Cell Handover Responses (TCHH)
(900/850-1800/1900)
12
H3418Z: Incoming External Inter-Cell Handover Responses (TCHH)
(1800/1900-900/850)
Meaning
After BSC2 receives an HO REQ message, it requests for a channel from the target cell and
activates it. BSC2 requests for speech service resources. If the request succeeds, the BSC2
returns an HO REQ ACK message to the MSC. The measurement is performed in the target
cell. The measurement is based on the channel type and the crossing of frequency bands.
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Along with Incoming External Inter-Cell Handover Requests per Cell and Failed Incoming
Internal Inter-Cell Handovers per Cell, the counters show the performance of incoming
external inter-cell handovers. Along with Outgoing External Inter-Cell Handover
Measurement per Cell, the counters show the performance of external inter-cell handovers.
The channel involved in the measurement is of the following types:
z
SDCCH
z
TCHF
z
TCHH
The crossing of frequency bands is of the following types:
z
900/850 to 900/850
z
1800/1900 to 1800/1900
z
900/850 to 1800/1900
z
1800/1900 to 900/850
Trigger Point
As shown in Figure 11-18 (B), the measurement is triggered when BSC2 sends an HO REQ
ACK to the MSC. The measurement is based on the channel type and the crossing of
frequency bands.
Formula
None.
11.13.4 Failed Incoming External Inter-Cell Handovers per Cell
Counter
Table 11-52 lists the counters of Failed Incoming External Inter-Cell Handovers per Cell.
Table 11-52 Counters of Failed Incoming External Inter-Cell Handovers per Cell
Number
Counter
1
H3420W: Failed Incoming External Inter-Cell Handovers (SDCCH)
(900/850-900/850)
2
H3420X: Failed Incoming External Inter-Cell Handovers (SDCCH)
(1800/1900-1800/1900)
3
H3420Y: Failed Incoming External Inter-Cell Handovers (SDCCH)
(900/850-1800/1900)
4
H3420Z: Failed Incoming External Inter-Cell Handovers (SDCCH)
(1800/1900-900/850)
5
H3429W: Failed Incoming External Inter-Cell Handovers (TCH) (900/850900/850)
6
H3429X: Failed Incoming External Inter-Cell Handovers (TCH)
(1800/1900-1800/1900)
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Number
Counter
7
H3429Y: Failed Incoming External Inter-Cell Handovers (TCH) (900/8501800/1900)
8
H3429Z: Failed Incoming External Inter-Cell Handovers (TCH) (1800/1900900/850)
9
H342I: Failed Incoming External Inter-Cell Handovers (Invalid Message)
10
H3420A: Failed Incoming External Inter-Cell Handovers (Channel
Unavailable) (SDCCH)
11
H3429A: Failed Incoming External Inter-Cell Handovers (Channel
Unavailable) (TCH)
12
H342E: Failed Incoming External Inter-Cell Handovers (CIC Unavailable)
13
H342F: Failed Incoming External Inter-Cell Handovers (CIC Allocated)
14
H342B: Failed Incoming External Inter-Cell Handovers (Terrestrial
Resource Request Failed)
15
H342H: Failed Incoming External Inter-Cell Handovers (Clear Commands
Sent by MSC)
16
H3420C: Failed Incoming External Inter-Cell Handovers (Timer Expired)
(SDCCH)
17
H3429Cb: Failed Incoming External Inter-Cell Handovers (Timer Expired)
(TCH) (Signaling Channel)
18
H3429Ca: Failed Incoming External Inter-Cell Handovers (Timer Expired)
(TCH) (Traffic Channel)
Meaning
In the incoming external inter-cell handover procedure, BSC2 measures the related counter
when receiving a message that causes a handover failure. The measurement is performed in
the target cell. The measurement is based on the channel type, the crossing of frequency bands,
and the failure cause.
Along with Incoming External Inter-Cell Handover Requests per Cell and Incoming External
Inter-Cell Handover Responses per Cell, the counters show the performance of incoming
external inter-cell handovers. Along with Outgoing External Inter-Cell Handover
Measurement per Cell, the counters show the performance of external inter-cell handovers.
The channel involved in the measurement is of the following types:
z
SDCCH
z
TCH (traffic channel or signaling channel)
The crossing of frequency bands is of the following types:
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900/850 to 900/850
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1800/1900 to 1800/1900
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z
900/850 to 1800/1900
z
1800/1900 to 900/850
11 Call Measurement
The failure causes consist of the following:
z
Invalid message
z
Channel unavailable
z
CIC unavailable
z
CIC allocated
z
Terrestrial resource request failed
z
Clear commands sent by MSC
z
Timer expired
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Trigger Point
Figure 11-19 shows the trigger points of the counters of Failed Incoming External Inter-Cell
Handovers per Cell.
Figure 11-19 Trigger points of the counters of Failed Incoming External Inter-Cell Handovers per
Cell BSC
MS
BTS1
BSC1
MSC
BSC2
BTS2
MS
MR FROM MS
HO RQD
HO REQ
B
In the
incoming
external
inter-cell
handover
procedure
C
CHAN ACTIV
CHAN
ACTIV ACK
HO
REQ ACK
D
HO ACC
HO CMD
HO DETECT
HO CMD
HO DETECT
PHY INFO
A
FIRST SABM
E
EST IND
UA
TIME OUT
F
HO CMP
HO CMP
CLR CMD
CLR CMP
A: Failed Incoming External Inter-Cell Handovers
B: Failed Incoming External Inter-Cell Handovers (Invalid Message)
C: Failed Incoming External Inter-Cell Handovers (Channel Unavailable)
D: Failed Incoming External Inter-Cell Handovers (Terrestrial Resource Request Failed, CIC
Unavailable, CIC Allocated)
E: Failed Incoming External Inter-Cell Handovers (Clear Commands Sent by MSC)
F: Failed Incoming External Inter-Cell Handovers (Timer Expired)
The trigger points of the counters are as follows:
z
Failed Incoming External Inter-Cell Handovers (Invalid Message)
BSC2 receives an HO REQ message from the MSC and decodes it. The measurement is
triggered when BSC2 detects that the message is invalid.
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z
11 Call Measurement
Failed Incoming External Inter-Cell Handovers (Channel Unavailable)
BSC2 receives an HO REQ message from the MSC and decodes it. BSC2 then requests
for a channel from the target cell. The measurement is triggered when the target cell
returns a request failure message with the cause of channel unavailable. The
measurement is based on the channel type.
The channel involved in the measurement is of the following types:
z
−
SDCCH
−
TCH
Failed Incoming External Inter-Cell Handovers (Terrestrial Resource Request Failed,
CIC Unavailable, CIC Allocated)
BSC2 receives an HO REQ message from the MSC and decodes it. BSC2 then requests
for a channel from the target cell. If the request succeeds, BSC2 sends a CHAN ACTIV
message to the target cell. After receiving a CHAN ACTIV ACK message, BSC2
requests for the terrestrial resources and terrestrial link resources about speech services.
z
−
If the request for terrestrial resources fails, the measurement of Failed Incoming
External Inter-Cell Handovers (Terrestrial Resource Request Failed) is triggered.
−
The CIC resources on the A interface is a key factor of the terrestrial resource request.
The MSC sends BSC2 an HO REQ message that carries the CIC. If BSC2 detects
that the CIC is unavailable, the measurement of Failed Incoming External Inter-Cell
Handovers (Terrestrial Resource Request Failed, CIC Unavailable is triggered.
−
If BSC2 detects that the CIC is already allocated, the measurement of Failed
Incoming External Inter-Cell Handovers (Terrestrial Resource Request Failed, CIC
Allocated) is triggered.
Failed Incoming External Inter-Cell Handovers (Timer Expired)
In the incoming external inter-cell handover procedure, the measurement is triggered
when BSC2 receives a TIME OUT message. The measurement is based on the channel
type and the TCH service type.
The channel involved in the measurement is of the following types:
−
SDCCH
−
TCH
The TCH is of the following service types:
z
−
TCH service channel
−
TCH signaling channel
Failed Incoming External Inter-Cell Handovers (Clear Commands Sent by MSC)
In the incoming external inter-cell handover procedure, the measurement is triggered
when BSC2 receives a CLR CMD message from the MSC.
z
Failed Incoming External Inter-Cell Handovers
In the incoming external inter-cell handover procedure, the measurement is triggered
when the handover fails.
Formula
None.
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11.13.5 Incoming External Inter-Cell Handover Detection
Messages Received by BSC per Cell
Counter
Table 11-51 lists the counters of Incoming External Inter-Cell Handover Detection Messages
Received by BSC per Cell.
Table 11-53 Counters of Incoming External Inter-Cell Handover Detection Messages Received by
BSC per Cell
Number
Counter
1
H3440: Incoming External Inter-Cell Handover Detection Messages
Received by BSC (SDCCH)
2
H3447: Incoming External Inter-Cell Handover Detection Messages
Received by BSC (TCHF)
3
H3448: Incoming External Inter-Cell Handover Detection Messages
Received by BSC (TCHH)
Meaning
The counters measure the number of times BSC2 receives an HO DETECT message. The
measurement is performed in the target cell.
The channel involved in the measurement is of the following types:
z
SDCCH
z
TCHF
z
TCHH
Trigger Point
As shown in Figure 11-19, the measurement is triggered when BSC2 receives an HO
DETECT message. The measurement is based on the channel type.
Formula
None.
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11.13.6 Incoming External Inter-Cell Handover Analyzed
Measurement per Cell
Counter
Table 11-54 lists the counters of Incoming External Inter-Cell Handover Analyzed
Measurement per Cell.
Table 11-54 Counters of Incoming External Inter-Cell Handover Analyzed Measurement per Cell
Number
Counter
1
CH340: Incoming External Inter-Cell Handover Requests
2
CH343: Successful Incoming External Inter-Cell Handovers
3
CH341: Incoming External Inter-Cell Handover Responses
4
TH343: Success Rate of Incoming External Inter-Cell Handover
5
CH3401: Incoming External Inter-Cell Handover TCH Requests
6
CH344: Incoming External Inter-Cell Handover Detection Messages
Received by BSC
7
CH342: Failed Incoming External Inter-Cell Handovers
8
CH342C: Failed Incoming External Inter-Cell Handovers (Timer Expired)
Meaning
None.
Trigger Point
None.
Formula
Incoming External Inter-Cell Handover Requests =
[Incoming External Inter-Cell Handover Requests (SDCCH) (900/850-900/850)] +
[Incoming External Inter-Cell Handover Requests (SDCCH) (1800/1900-1800/1900)] +
[Incoming External Inter-Cell Handover Requests (SDCCH) (900/850-1800/1900)] +
[Incoming External Inter-Cell Handover Requests (SDCCH) (1800/1900-900/850)] +
[Incoming External Inter-Cell Handover Requests (TCH) (900/850-900/850)] +
[Incoming External Inter-Cell Handover Requests (TCH) (1800/1900-1800/1900)] +
[Incoming External Inter-Cell Handover Requests (TCH) (900/850-1800/1900)] +
[Incoming External Inter-Cell Handover Requests (TCH) (1800/1900-900/850)]
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Successful Incoming External Inter-Cell Handovers =
([Incoming External Inter-Cell Handover Requests (SDCCH) (900/850-900/850)] +
[Incoming External Inter-Cell Handover Requests (SDCCH) (1800/1900-1800/1900)] +
[Incoming External Inter-Cell Handover Requests (SDCCH) (900/850-1800/1900)] +
[Incoming External Inter-Cell Handover Requests (SDCCH) (1800/1900-900/850)] +
[Incoming External Inter-Cell Handover Requests (TCH) (900/850-900/850)] +
[Incoming External Inter-Cell Handover Requests (TCH) (1800/1900-1800/1900)] +
[Incoming External Inter-Cell Handover Requests (TCH) (900/850-1800/1900)] +
[Incoming External Inter-Cell Handover Requests (TCH) (1800/1900-900/850)])
([Failed Incoming External Inter-Cell Handovers (SDCCH) (900/850-900/850)] +
[Failed Incoming External Inter-Cell Handovers (SDCCH) (1800/1900-1800/1900)] +
[Failed Incoming External Inter-Cell Handovers (SDCCH) (900/850-1800/1900)] +
[Failed Incoming External Inter-Cell Handovers (SDCCH) (1800/1900-900/850)] +
[Failed Incoming External Inter-Cell Handovers (TCH) (900/850-900/850)] +
[Failed Incoming External Inter-Cell Handovers (TCH) (1800/1900-1800/1900)] +
[Failed Incoming External Inter-Cell Handovers (TCH) (900/850-1800/1900)] +
[Failed Incoming External Inter-Cell Handovers (TCH) (1800/1900-900/850)])
Incoming External Inter-Cell Handover Responses =
[Incoming External Inter-Cell Handover Responses (SDCCH) (900/850-900/850)] +
[Incoming External Inter-Cell Handover Responses (SDCCH) (1800/1900-1800/1900)] +
[Incoming External Inter-Cell Handover Responses (SDCCH) (900/850-1800/1900)] +
[Incoming External Inter-Cell Handover Responses (SDCCH) (1800/1900-900/850)] +
[Incoming External Inter-Cell Handover Responses (TCHF) (900/850-900/850)] +
[Incoming External Inter-Cell Handover Responses (TCHF) (1800/1900-1800/1900)] +
[Incoming External Inter-Cell Handover Responses (TCHF) (900/850-1800/1900)] +
[Incoming External Inter-Cell Handover Responses (TCHF) (1800/1900-900/850)] +
[Incoming External Inter-Cell Handover Responses (TCHH) (900/850-900/850)] +
[Incoming External Inter-Cell Handover Responses (TCHH) (1800/1900-1800/1900)] +
[Incoming External Inter-Cell Handover Responses (TCHH) (900/850-1800/1900)] +
[Incoming External Inter-Cell Handover Responses (TCHH) (1800/1900-900/850)]
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Success Rate of Incoming External Inter-Cell Handover =
[Successful Incoming External Inter-Cell Handovers]*{100}/[Incoming External Inter-Cell
Handover Requests]
Incoming External Inter-Cell Handover TCH Requests =
[Incoming External Inter-Cell Handover TCH Requests (TCHF Only)] +
[Incoming External Inter-Cell Handover TCH Requests (TCHH Only)] +
[Incoming External Inter-Cell Handover TCH Requests (TCHF Preferred, Channel Type
Unchangeable)] +
[Incoming External Inter-Cell Handover TCH Requests (TCHH Preferred, Channel Type
Unchangeable)] +
[Incoming External Inter-Cell Handover TCH Requests (TCHF Preferred, Channel Type
Changeable)] +
[Incoming External Inter-Cell Handover TCH Requests (TCHH Preferred, Channel Type
Changeable)] +
[Incoming External Inter-Cell Handover TCH Requests (TCHF or TCHH, Channel Type
Unchangeable)] +
[Incoming External Inter-Cell Handover TCH Requests (TCHF or TCHH, Channel Type
Changeable)]
Incoming External Inter-Cell Handover Detection Messages Received by BSC =
[Incoming External Inter-Cell Handover Detection Messages Received by BSC (SDCCH)] +
[Incoming External Inter-Cell Handover Detection Messages Received by BSC (TCHF)] +
[Incoming External Inter-Cell Handover Detection Messages Received by BSC (TCHH)]
Failed Incoming External Inter-Cell Handovers =
[Failed Incoming External Inter-Cell Handovers (SDCCH) (900/850-900/850)] +
[Failed Incoming External Inter-Cell Handovers (SDCCH) (1800/1900-1800/1900)] +
[Failed Incoming External Inter-Cell Handovers (SDCCH) (900/850-1800/1900)] +
[Failed Incoming External Inter-Cell Handovers (SDCCH) (1800/1900-900/850)] +
[Failed Incoming External Inter-Cell Handovers (TCH) (900/850-900/850)] +
[Failed Incoming External Inter-Cell Handovers (TCH) (1800/1900-1800/1900)] +
[Failed Incoming External Inter-Cell Handovers (TCH) (900/850-1800/1900)] +
[Failed Incoming External Inter-Cell Handovers (TCH) (1800/1900-900/850)]
Failed Incoming External Inter-Cell Handovers (Timer Expired) =
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[Failed Incoming External Inter-Cell Handovers (Timer Expired) (SDCCH)] +
[Failed Incoming External Inter-Cell Handovers (Timer Expired) (TCH) (Signaling Channel)]
+
[Failed Incoming External Inter-Cell Handovers (Timer Expired) (TCH) (Traffic Channel)]
11.14 Outgoing External Inter-Cell Handover
Measurement per Cell
11.14.1 Overview
Outgoing External Inter-Cell Handover Measurement per Cell can be classified into Outgoing
External Inter-Cell Handover (Excluding Directed Retry) and Outgoing External Inter-Cell
Handover (Directed Retry).
Outgoing external inter-cell handover (excluding directed retry)
As shown in Figure 11-20, after the BSC receives measurement reports from the MS, it uses
the handover algorithm to decide whether a handover is required or not. If a handover is
required and the source cell (the current cell where the MS is located) and the target cell (the
cell where the MS is located after the handover) are controlled by two BSCs, an external
inter-cell handover is initiated.
The measurement of outgoing external inter-cell handover (excluding directed retry) is
performed in the source cell.
The procedure of the outgoing external inter-cell handover (excluding directed retry) is as
follows:
Step 1 BSC1 initiates an external inter-cell handover based on the handover algorithm.
Step 2 BSC1 sends an HO RQD message to the MSC.
Step 3 Based on the HO RQD message and the relation between the cell and the BSC, the MSC finds
BSC2 and sends an HO REQ message to BSC2.
Step 4 BSC2 requests for a traffic channel from the target cell. After the request succeeds, BSC2
sends a CHAN ACTIV message to the target cell. After receiving a CHAN ACTIV ACK
message from the target cell, BSC2 requests for speech service resources. After the request
succeeds, BSC2 sends the MSC an HO REQ ACK message to notify the MSC that the target
cell is ready for the MS access.
Step 5 The MSC sends an HO CMD message to BSC1 and BSC1 forwards this message to the MS.
This message is used to request the MS to access the target cell.
Step 6 The MS sends the target cell an HO ACC message to attempt to access the target cell. BTS2
sends an HO DETECT message to BSC2 and a PHY INFO message to the MS.
Step 7 The MS sends a FIRST SABM frame to BTS2. After receiving this frame, BTS2 sends an
EST IND message to BSC2 and returns a UA frame to the MS.
Step 8 After the MS accesses the target cell, it sends an HO CMP message to BSC2 and BSC2
forwards this message to the MSC.
Step 9 The MSC sends a CLR CMD message to BSC1 and the BSC1 releases the terrestrial
resources in the source cell.
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Step 10 BSC1 sends a CLR CMP message to the MSC.
----End
Figure 11-20 Outgoing external inter-cell handover (excluding directed retry)
MS
BTS1
BSC1
MSC
BTS2
BSC2
MS
MR FROM MS
A
HO RQD
HO REQ
CHAN ACTIV
CHAN
ACTIV ACK
HO REQ ACK
HO CMD
HO CMD
HO ACC
HO DETECT
B
HO DETECT
PHY INFO
FIRST SABM
EST IND
UA
HO CMP
HO CMP
CLR CMD
CLR CMP
A: Outgoing external inter-cell handover request (excluding directed retry)
B: Outgoing external inter-cell handover response (excluding directed retry)
Outgoing external inter-cell handover (directed retry)
The procedure is as follows:
Step 1 As shown in Figure 11-21, the MS sends a CHAN RQD message to BTS1 and BTS1
forwards it to BSC1.
Step 2 BSC1 requests for a signaling channel from the source cell. If the request succeeds, BSC1
sends a CHAN ACTIV message to the source cell. After receiving a CHAN ACTIV ACK
message from the source cell, BSC1 sends an IMM ASS CMD to the MS through the source
cell.
Step 3 The MS sends a FIRST ASBM frame to BTS1 and BTS1 returns a UA frame. After receiving
the FIRST ASBM frame, BTS1 sends an EST IND message to BSC1.
Step 4 BSC1 extracts the CM SERV REQ message carried in the EST IND message, encapsulates it
into a connection request (CR) message, and sends the CR message to the MSC.
Step 5 The MSC returns a Connection Confirm (CC) message. The MM connection between the MS
and the MSC is established.
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Step 6 After the transmission of the CM SERV ACCEPT, SETUP, and CALL PROCEEDING
messages, the MSC sends an ASSIGN REQ message to BSC1.
Step 7 BSC1 selects a kind of assignment procedure (normal assignment procedure, mode modify
procedure, directed retry procedure) based on the load of the source cell.
Step 8 If the subsequent services are unavailable or the subsequent services affect the existing
services because the cell load is too high, BSC1 selects the directed retry procedure. If the
source cell and the target cell are controlled by two BSCs, the directed retry is performed
through an external inter-cell handover procedure. If the measurement is performed in the
source cell, the outgoing external inter-cell handover procedure is initiated.
Step 9 BSC1 sends an HO RQD message to the MSC to initiate an external inter-cell handover.
Step 10 Based on the HO RQD message and the relation between the cell and the BSC, the MSC finds
BSC2 and sends an HO REQ message to BSC2.
Step 11 BSC2 requests for a channel from the target cell. After the request succeeds, BSC2 sends a
CHAN ACTIV message to the target cell. After receiving a CHAN ACTIV ACK message
from the target cell, BSC2 requests for speech service resources. After the request succeeds,
BSC2 sends the MSC an HO REQ ACK message to notify the MSC that the target cell is
ready for the MS access.
Step 12 The MSC sends an HO CMD message to BSC1 and BSC1 forwards this message to the MS.
This message is used to request the MS to access the target cell.
Step 13 The MS sends the target cell an HO ACC message to attempt to access the target cell. BTS2
sends an HO DETECT message to BSC2 and a PHY INFO message to the MS.
Step 14 BSC2 sends an HO DETECT message to the MSC. The MS sends a FIRST SABM frame to
BTS2. After receiving this frame, BTS2 returns a UA frame to the MS and sends an EST IND
message to BSC2.
Step 15 The MS sends an HO CMP message to BSC2 and BSC2 forwards this message to the MSC.
Step 16 The MSC sends a CLR CMD message to BSC1 and the BSC1 releases the terrestrial
resources in the source cell.
Step 17 BSC1 sends a CLR CMP message to the MSC.
----End
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Figure 11-21 Outgoing external inter-cell handover (Directed Retry)
MS
BTS1(CELL1)
BSC1
BSC2
MSC
BTS2(CELLO)
MS
CHAN REQ
CHAN RED
CHAN ACTIV
CHAN
ACTIV ACK
IMM
ASS CMD
FIRST SABM
UA
EST IND（CM
SERV REQ）
CR(CM
SERV REQ)
CC
CM SERV
ACCEPT
SETUP
CALL
PROCEEDING
ASSIGN REQ
A
HO RQD
HO REQ
CHAN ACTIV
CHAN
ACTIV ACK
HO REQ ACK
HO CMD
HO CMD
HO ACC
HO DETECT
PHY INFO
HO DETECT
FIRST SABM
B
EST IND
UA
HO CMP
HO CMP
CLR CMD
CLR CMP
A: Outgoing external inter-cell handover requests (Directed Retry)
B: Outgoing external inter-cell handover responses (Directed Retry)
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Table 11-55 lists the counter classification of Outgoing External Inter-Cell Handover
Measurement per Cell.
Table 11-55 Counter classification of outgoing External Inter-Cell Handover Measurement per
Cell
Counter Classification
Section
Outgoing External Inter-Cell Handover Requests per Cell
11.14.2
Outgoing External Inter-Cell Handover Commands per Cell
11.14.3
Failed Outgoing External Inter-Cell Handovers per Cell
11.14.4
Outgoing External Inter-Cell Handover Analyzed Measurement per Cell
11.14.5
11.14.2 Outgoing External Inter-Cell Handover Requests per Cell
Counter
Table 11-56 lists the counters of Outgoing External Inter-Cell Handover Requests per Cell
(Excluding Directed Retry).
Table 11-56 Counters of Outgoing External Inter-Cell Handover Requests per Cell (Excluding
Directed Retry)
11-144
Number
Counter
1
H3300W: Outgoing External Inter-Cell Handover Requests (SDCCH)
(Excluding Directed Retry) (900/850-900/850)
2
H3300X: Outgoing External Inter-Cell Handover Requests (SDCCH)
(Excluding Directed Retry) (1800/1900-1800/1900)
3
H3300Y: Outgoing External Inter-Cell Handover Requests (SDCCH)
(Excluding Directed Retry) (900/850-1800/1900)
4
H3300Z: Outgoing External Inter-Cell Handover Requests (SDCCH)
(Excluding Directed Retry) (1800/1900-900/850)
5
H3307W: Outgoing External Inter-Cell Handover Requests (TCHF)
(Excluding Directed Retry) (900/850-900/850)
6
H3307X: Outgoing External Inter-Cell Handover Requests (TCHF)
(Excluding Directed Retry) (1800/1900-1800/1900)
7
H3307Y: Outgoing External Inter-Cell Handover Requests (TCHF)
(Excluding Directed Retry) (900/850-1800/1900)
8
H3307Z: Outgoing External Inter-Cell Handover Requests (TCHF)
(Excluding Directed Retry) (1800/1900-900/850)
9
H3308W: Outgoing External Inter-Cell Handover Requests (TCHH)
(Excluding Directed Retry) (900/850-900/850)
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Number
Counter
10
H3308X: Outgoing External Inter-Cell Handover Requests (TCHH)
(Excluding Directed Retry) (1800/1900-1800/1900)
11
H3308Y: Outgoing External Inter-Cell Handover Requests (TCHH)
(Excluding Directed Retry) (900/850-1800/1900)
12
H3308Z: Outgoing External Inter-Cell Handover Requests (TCHH)
(Excluding Directed Retry) (1800/1900-900/850)
13
H330A: Outgoing External Inter-Cell Handover Requests (Uplink Quality)
14
H330B: Outgoing External Inter-Cell Handover Requests (Downlink
Quality)
15
H330C: Outgoing External Inter-Cell Handover Requests (Uplink Strength)
16
H330D: Outgoing External Inter-Cell Handover Requests (Downlink
Strength)
17
H330E: Outgoing External Inter-Cell Handover Requests (Timing Advance)
18
H330F: Outgoing External Inter-Cell Handover Requests (Better Cell)
19
H330G: Outgoing External Inter-Cell Handover Requests (Load)
20
H330H: Outgoing External Inter-Cell Handover Requests (Rapid Level
Drop)
21
H330I: Outgoing External Inter-Cell Handover Requests (MSC Intervention)
22
H330J: Outgoing External Inter-Cell Handover Requests (OM Intervention)
23
H330L: Outgoing External Inter-Cell Handover Requests (Other Causes)
Table 11-57 lists the counters of Outgoing External Inter-Cell Handover Requests per Cell
(Directed Retry).
Table 11-57 Counters of Outgoing External Inter-Cell Handover Requests per Cell (Directed
Retry)
Number
Counter
1
H3301W: Outgoing External Inter-Cell Handover Requests (Directed Retry)
(900/850-900/850)
2
H3301X: Outgoing External Inter-Cell Handover Requests (Directed Retry)
(1800/1900-1800/1900)
3
H3301Y: Outgoing External Inter-Cell Handover Requests (Directed Retry)
(900/850-1800/1900)
4
H3301Z: Outgoing External Inter-Cell Handover Requests (Directed Retry)
(1800/1900-900/850)
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11 Call Measurement
Table 11-58 lists the counters of Outgoing External Inter-Cell Handover Requests per Cell
(Including Directed Retry).
Table 11-58 Counters of Outgoing External Inter-Cell Handover Requests per Cell (Including
Directed Retry)
Number
Counter
1
H3303: Outgoing External Inter-Cell Handover Requests (Different
Signaling Points)
Meaning
The descriptions of the counters are as follows:
z
Outgoing External Inter-Cell Handover Requests (Excluding Directed Retry)
The counters measure the number of outgoing external inter-cell handover requests
initiated by the handover algorithm. The measurement is performed in the source cell.
The measurement is based on the channel type, different signaling points, and the
handover cause.
Along with Outgoing External Inter-Cell Handover Commands per Cell and Failed
Outgoing External Inter-Cell Handovers per Cell, the counters show the performance of
outgoing external inter-cell handover. Along with Incoming External Inter-Cell
Handover Measurement per Cell, the counters show the performance of external intercell handovers.
The channel involved in the measurement is of the following types:
−
SDCCH
−
TCHF
−
TCHH
The handover between different signaling points in a BSC is also called outgoing
external inter-cell handover.
The handover causes consist of the following:
z
11-146
−
Uplink quality
−
Downlink quality
−
Uplink strength
−
Downlink strength
−
Timing advance
−
Better cell
−
Load
−
Rapid level drop
−
MSC intervention
−
OM intervention
−
EDGE coverage
−
Other causes
Outgoing External Inter-Cell Handover Requests (Directed Retry)
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11 Call Measurement
The counters measure the number of outgoing external inter-cell handover requests in the
directed retry procedure.
Along with Outgoing External Inter-Cell Handover Commands per Cell and Failed
Outgoing External Inter-Cell Handovers per Cell, the counters show the performance of
outgoing external inter-cell handovers. Along with Incoming External Inter-Cell
Handover Measurement per Cell, the counters show the performance of external intercell handovers.
Trigger Point
The trigger points of the counters are as follows:
z
Outgoing External Inter-Cell Handover Requests (Excluding Directed Retry)
As shown in Figure 11-20 (A), the measurement is triggered when the BSC decides to
initiate an outgoing external inter-cell handover based on the measurement reports. The
measurement is based on the channel type, different signaling points, and the handover
cause.
z
Outgoing External Inter-Cell Handover Requests (Directed Retry)
As shown in Figure 11-21 (A), the measurement is triggered when the BSC initiates a
directed retry procedure.
Formula
None.
11.14.3 Outgoing External Inter-Cell Handover Commands per
Cell
Counter
Table 11-59 lists the counters of Outgoing External Inter-Cell Handover Commands per Cell
(Excluding Directed Retry).
Table 11-59 Counters of Outgoing External Inter-Cell Handover Commands per Cell (Excluding
Directed Retry)
Number
Counter
1
H3310W: Outgoing External Inter-Cell Handover Commands (SDCCH)
(Excluding Directed Retry) (900/850-900/850)
2
H3310X: Outgoing External Inter-Cell Handover Commands (SDCCH)
(Excluding Directed Retry) (1800/1900-1800/1900)
3
H3310Y: Outgoing External Inter-Cell Handover Commands (SDCCH)
(Excluding Directed Retry) (900/850-1800/1900)
4
H3310Z: Outgoing External Inter-Cell Handover Commands (SDCCH)
(Excluding Directed Retry) (1800/1900-900/850)
5
H3317W: Outgoing External Inter-Cell Handover Commands (TCHF)
(Excluding Directed Retry) (900/850-900/850)
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11 Call Measurement
Number
Counter
6
H3317X: Outgoing External Inter-Cell Handover Commands (TCHF)
(Excluding Directed Retry) (1800/1900-1800/1900)
7
H3317Y: Outgoing External Inter-Cell Handover Commands (TCHF)
(Excluding Directed Retry) (900/850-1800/1900)
8
H3317Z: Outgoing External Inter-Cell Handover Commands (TCHF)
(Excluding Directed Retry) (1800/1900-900/850)
9
H3318W: Outgoing External Inter-Cell Handover Commands (TCHH)
(Excluding Directed Retry) (900/850-900/850)
10
H3318X: Outgoing External Inter-Cell Handover Commands (TCHH)
(Excluding Directed Retry) (1800/1900-1800/1900)
11
H3318Y: Outgoing External Inter-Cell Handover Commands (TCHH)
(Excluding Directed Retry) (900/850-1800/1900)
12
H3318Z: Outgoing External Inter-Cell Handover Commands (TCHH)
(Excluding Directed Retry) (1800/1900-900/850)
13
H331A: Outgoing External Inter-Cell Handover Commands (Uplink Quality)
14
H331B: Outgoing External Inter-Cell Handover Commands (Downlink
Quality)
15
H331C: Outgoing External Inter-Cell Handover Commands (Uplink Strength)
16
H331D: Outgoing External Inter-Cell Handover Commands (Downlink
Strength)
17
H331E: Outgoing External Inter-Cell Handover Commands (Timing Advance)
18
H331F: Outgoing External Inter-Cell Handover Commands (Better Cell)
19
H331G: Outgoing External Inter-Cell Handover Commands (Load)
20
H331H: Outgoing External Inter-Cell Handover Commands (Rapid Level
Drop)
21
H331I: Outgoing External Inter-Cell Handover Commands (MSC Intervention)
22
H331J: Outgoing External Inter-Cell Handover Commands (OM Intervention)
23
H331L: Outgoing External Inter-Cell Handover Commands (Other Causes)
Table 11-60 lists the counters of Outgoing External Inter-Cell Handover Commands per Cell
(Directed Retry).
Table 11-60 Counters of Outgoing External Inter-Cell Handover Commands per Cell (Directed
Retry)
11-148
Number
Counter
1
H3311W: Outgoing External Inter-Cell Handover Commands (Directed
Retry) (900/850-900/850)
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11 Call Measurement
Number
Counter
2
H3311X: Outgoing External Inter-Cell Handover Commands (Directed
Retry) (1800/1900-1800/1900)
3
H3311Y: Outgoing External Inter-Cell Handover Commands (Directed
Retry) (900/850-1800/1900)
4
H3311Z: Outgoing External Inter-Cell Handover Commands (Directed
Retry) (1800/1900-900/850)
Table 11-61 lists the counters of Outgoing External Inter-Cell Handover Commands per Cell
(Including Directed Retry).
Table 11-61 Counters of Outgoing External Inter-Cell Handover Commands per Cell (Including
Directed Retry)
Number
Counter
1
H3313: Outgoing External Inter-Cell Handover Commands (Different
Signaling Points)
Meaning
The descriptions of the counters are as follows:
z
Outgoing External Inter-Cell Handover Commands (Excluding Directed Retry)
The counters measure the number of times BSC1 sends an HO CMD message to the MS.
The measurement is based on the crossing of frequency bands, the channel type, different
signaling points, and the handover cause.
Along with Outgoing External Inter-Cell Handover Requests per Cell and Failed
Outgoing External Inter-Cell Handovers per Cell, the counters show the performance of
outgoing external inter-cell handovers. Along with Incoming External Inter-Cell
Handover Measurement per Cell, the counters show the performance of external intercell handovers.
The crossing of frequency bands is of the following types:
−
900/850 to 900/850
−
1800/1900 to 1800/1900
−
900/850 to 1800/1900
−
1800/1900 to 900/850
The channel involved in the measurement is of the following types:
−
SDCCH
−
TCHF
−
TCHH
The handover between different signaling points in a BSC is also called outgoing
external inter-cell handover.
The handover causes consist of the following:
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11 Call Measurement
z
−
Uplink quality
−
Downlink quality
−
Uplink strength
−
Downlink strength
−
Timing advance
−
Better cell
−
Load
−
Rapid level drop
−
MSC intervention
−
OM intervention
−
EDGE coverage
−
Other causes
Outgoing External Inter-Cell Handover Commands (Directed Retry)
In the directed retry procedure, the counters measure the number of times the BSC sends
an HO CMD message to the MS. The measurement is based on the crossing of frequency
bands and different signaling points.
Along with Outgoing External Inter-Cell Handover Requests per Cell and Failed
Outgoing External Inter-Cell Handovers per Cell, the counters show the performance of
outgoing external inter-cell handovers. Along with Incoming External Inter-Cell
Handover Measurement per Cell, the counters show the performance of external intercell handovers.
The crossing of frequency bands is of the following types:
−
900/850 to 900/850
−
1800/1900 to 1800/1900
−
900/850 to 1800/1900
−
1800/1900 to 900/850
The handover between different signaling points in a BSC is also called outgoing
external inter-cell handover.
Trigger Point
The trigger points of the counters are as follows:
z
Outgoing External Inter-Cell Handover Commands (Excluding Directed Retry)
As shown in Figure 11-20 (B), in the outgoing external inter-cell (excluding directed
retry) procedure, the measurement is triggered when the BSC sends an HO CMD
message to the MS. The measurement is performed in the source cell. The measurement
is based on the crossing of frequency bands, the channel type, different signaling points,
and the handover cause.
z
Outgoing External Inter-Cell Handover Commands (Directed Retry)
As shown in Figure 11-21 (B), in the outgoing external inter-cell handover (directed retry)
procedure, the measurement is triggered when the BSC sends an HO CMD message to
the MS. The measurement is performed in the source cell. The measurement is based on
the crossing of frequency bands and different signaling points.
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11 Call Measurement
Formula
None.
11.14.4 Failed Outgoing External Inter-Cell Handovers per Cell
Counter
Table 11-62 lists the counters of Failed Outgoing External Inter-Cell Handovers per Cell
(Excluding Directed Retry).
Table 11-62 Counters of Failed Outgoing External Inter-Cell Handovers per Cell (Excluding
Directed Retry)
Number
Counter
1
H3320W: Failed Outgoing External Inter-Cell Handovers (SDCCH)
(900/850-900/850)
2
H3320X: Failed Outgoing External Inter-Cell Handovers (SDCCH)
(1800/1900-1800/1900)
3
H3320Y: Failed Outgoing External Inter-Cell Handovers (SDCCH)
(900/850-1800/1900)
4
H3320Z: Failed Outgoing External Inter-Cell Handovers (SDCCH)
(1800/1900-900/850)
5
H3327W: Failed Outgoing External Inter-Cell Handovers (TCHF) (900/850900/850)
6
H3327X: Failed Outgoing External Inter-Cell Handovers (TCHF)
(1800/1900-1800/1900)
7
H3327Y: Failed Outgoing External Inter-Cell Handovers (TCHF) (900/8501800/1900)
8
H3327Z: Failed Outgoing External Inter-Cell Handovers (TCHF)
(1800/1900-900/850)
9
H3328W: Failed Outgoing External Inter-Cell Handovers (TCHH) (900/850900/850)
10
H3328X: Failed Outgoing External Inter-Cell Handovers (TCHH)
(1800/1900-1800/1900)
11
H3328Y: Failed Outgoing External Inter-Cell Handovers (TCHH) (900/8501800/1900)
12
H3328Z: Failed Outgoing External Inter-Cell Handovers (TCHH)
(1800/1900-900/850)
13
H3322A: Failed Outgoing External Inter-Cell Handovers (Uplink Quality)
14
H3322B: Failed Outgoing External Inter-Cell Handovers (Downlink Quality)
15
H3322C: Failed Outgoing External Inter-Cell Handovers (Uplink Strength)
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11-152
Number
Counter
16
H3322D: Failed Outgoing External Inter-Cell Handovers (Downlink
Strength)
17
H3322E: Failed Outgoing External Inter-Cell Handovers (Timing Advance)
18
H3322F: Failed Outgoing External Inter-Cell Handovers (Better Cell)
19
H3322G: Failed Outgoing External Inter-Cell Handovers (Load)
20
H3322H: Failed Outgoing External Inter-Cell Handovers (Rapid Level Drop)
21
H3322I: Failed Outgoing External Inter-Cell Handovers (MSC Intervention)
22
H3322J: Failed Outgoing External Inter-Cell Handovers (OM Intervention)
23
H3322L: Failed Outgoing External Inter-Cell Handovers (Other Causes)
24
H332Da: Failed Outgoing External Inter-Cell Handovers (Reconnection to
Old Channels) (Abnormal Release, Unspecified)
25
H332Db: Failed Outgoing External Inter-Cell Handovers (Reconnection to
Old Channels) (Abnormal Release, Channel Unacceptable)
26
H332Dc: Failed Outgoing External Inter-Cell Handovers (Reconnection to
Old Channels) (Abnormal Release, Timer Expired)
27
H332Dd: Failed Outgoing External Inter-Cell Handovers (Reconnection to
Old Channels) (Abnormal Release, No Activity on the Radio Path)
28
H332De: Failed Outgoing External Inter-Cell Handovers (Reconnection to
Old Channels) (Preemptive Release)
29
H332Df: Failed Outgoing External Inter-Cell Handovers (Reconnection to
Old Channels) (Handover Failed, Timing Advance out of Range)
30
H332Dg: Failed Outgoing External Inter-Cell Handovers (Reconnection to
Old Channels) (Channel Mode Unavailable)
31
H332Dh: Failed Outgoing External Inter-Cell Handovers (Reconnection to
Old Channels) (Frequency Unavailable)
32
H332Di: Failed Outgoing External Inter-Cell Handovers (Reconnection to
Old Channels) (Call Already Cleared)
33
H332Dj: Failed Outgoing External Inter-Cell Handovers (Reconnection to
Old Channels) (Semantically Incorrect Message)
34
H332Dk: Failed Outgoing External Inter-Cell Handovers (Reconnection to
Old Channels) (Invalid Mandatory Information)
35
H332Dl: Failed Outgoing External Inter-Cell Handovers (Reconnection to
Old Channels) (Message Type Non-existent or Not Implemented)
36
H332Dm: Failed Outgoing External Inter-Cell Handovers (Reconnection to
Old Channels) (Message Type Not Compatible with Protocol State)
37
H332Dn: Failed Outgoing External Inter-Cell Handovers (Reconnection to
Old Channels) (Conditional IE Error)
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11 Call Measurement
Number
Counter
38
H332Do: Failed Outgoing External Inter-Cell Handovers (Reconnection to
Old Channels) (No Cell Allocation Available)
39
H332Dp: Failed Outgoing External Inter-Cell Handovers (Reconnection to
Old Channels) (Protocol Error Unspecified)
40
H332Dq: Failed Outgoing External Inter-Cell Handovers (Reconnection to
Old Channels) (Other Causes)
41
H3320L: Failed Outgoing External Inter-Cell Handovers (T7 Expiry)
(SDCCH)
42
H3327Lb: Failed Outgoing External Inter-Cell Handovers (T7 Expiry)
(TCHF) (Signaling Channel)
43
H3328Lb: Failed Outgoing External Inter-Cell Handovers (T7 Expiry)
(TCHH) (Signaling Channel)
44
H3320C: Failed Outgoing External Inter-Cell Handovers (T8 Expiry)
(SDCCH) (Excluding Directed Retry)
45
H3327Cb: Failed Outgoing External Inter-Cell Handovers (T8 Expiry)
(TCHF) (Signaling Channel)
46
H3328Cb: Failed Outgoing External Inter-Cell Handovers (T8 Expiry)
(TCHH) (Signaling Channel)
Table 11-63 lists the counters of Failed Outgoing External Inter-Cell Handovers per Cell
(Directed Retry).
Table 11-63 Counters of Failed Outgoing External Inter-Cell Handovers per Cell (Directed Retry)
Number
Counter
1
H3321W: Failed Outgoing External Inter-Cell Handovers (Directed Retry)
(900/850-900/850)
2
H3321X: Failed Outgoing External Inter-Cell Handovers (Directed Retry)
(1800/1900-1800/1900)
3
H3321Y: Failed Outgoing External Inter-Cell Handovers (Directed Retry)
(900/850-1800/1900)
4
H3321Z: Failed Outgoing External Inter-Cell Handovers (Directed Retry)
(1800/1900-900/850)
5
H3321L: Failed Outgoing External Inter-Cell Handovers (T7 Expired)
(Directed Retry)
6
H3321C: Failed Outgoing External Inter-Cell Handovers (T8 Expired)
(Directed Retry)
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Table 11-64 lists the counters of Failed Outgoing External Inter-Cell Handovers per Cell
(Including Directed Retry).
Table 11-64 Counters of Failed Outgoing External Inter-Cell Handovers per Cell (Including
Directed Retry)
11-154
Number
Counter
1
H332Ka: Failed Outgoing External Inter-Cell Handovers (Handover Request
Rejected) (OM Intervention)
2
H332Kb: Failed Outgoing External Inter-Cell Handovers (Handover Request
Rejected) (Equipment Failure)
3
H332Kc: Failed Outgoing External Inter-Cell Handovers (Handover Request
Rejected) (No Radio Resource Available)
4
H332Kd: Failed Outgoing External Inter-Cell Handovers (Handover Request
Rejected) (Requested Terrestrial Resource Unavailable)
5
H332Ke: Failed Outgoing External Inter-Cell Handovers (Handover Request
Rejected) (BSS not Equipped)
6
H332Kf: Failed Outgoing External Inter-Cell Handovers (Handover Request
Rejected) (Invalid Cell)
7
H332Kg: Failed Outgoing External Inter-Cell Handovers (Handover Request
Rejected) (Requested Transcoding/Rate Adaption Unavailable)
8
H332Kh: Failed Outgoing External Inter-Cell Handovers (Handover Request
Rejected) (Circuit Pool Mismatch)
9
H332Ki: Failed Outgoing External Inter-Cell Handovers (Handover Request
Rejected) (Requested Speech Version Unavailable)
10
H332Kj: Failed Outgoing External Inter-Cell Handovers (Handover Request
Rejected) (Ciphering Algorithm not Supported)
11
H332Kk: Failed Outgoing External Inter-Cell Handovers (Handover Request
Rejected) (Terrestrial circuit already allocated)
12
H332Kl: Failed Outgoing External Inter-Cell Handovers (Handover Request
Rejected) (Invalid Message)
13
H332Km: Failed Outgoing External Inter-Cell Handovers (Handover Request
Rejected) (Protocol Error between BSS and MSC)
14
H332Kn: Failed Outgoing External Inter-Cell Handovers (Handover Request
Rejected) (Other Causes)
15
H332Ha: Failed Outgoing External Inter-Cell Handovers (Clear Commands
Sent by MSC) (Radio Interface Message Failure)
16
H332Hb: Failed Outgoing External Inter-Cell Handovers (Clear Commands
Sent by MSC) (Radio Interface Failure)
17
H332Hc: Failed Outgoing External Inter-Cell Handovers (Clear Commands
Sent by MSC) (OM Intervention)
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11 Call Measurement
Number
Counter
18
H332Hd: Failed Outgoing External Inter-Cell Handovers (Clear Commands
Sent by MSC) (Equipment Failure)
19
H332He: Failed Outgoing External Inter-Cell Handovers (Clear Commands
Sent by MSC) (Preemption)
20
H332Hf: Failed Outgoing External Inter-Cell Handovers (Clear Commands
Sent by MSC) (Invalid Message)
21
H332Hg: Failed Outgoing External Inter-Cell Handovers (Clear Commands
Sent by MSC) (Protocol Error between BSS and MSC)
22
H332Hh: Failed Outgoing External Inter-Cell Handovers (Clear Commands
Sent by MSC) (Other Causes)
23
H332G: Failed Outgoing External Inter-Cell Handovers (A-Interface Failure)
24
H3327La: Failed Outgoing External Inter-Cell Handovers (T7 Expired)
(TCHF) (Traffic Channel)
25
H3328La: Failed Outgoing External Inter-Cell Handovers (T7 Expired)
(TCHH) (Traffic Channel)
26
H3327Ca: Failed Outgoing External Inter-Cell Handovers (T8 Expired)
(TCHF) (Traffic Channel)
27
H3328Ca: Failed Outgoing External Inter-Cell Handovers (T8 Expired)
(TCHH) (Traffic Channel)
28
H332Ka: Failed Outgoing External Inter-Cell Handovers (Handover Request
Rejected) (OM Intervention)
29
H3323: Failed Outgoing External Inter-Cell Handovers (Different Signaling
Points)
Meaning
z
Failed Outgoing External Inter-Cell Handovers (Excluding Directed Retry)
In the outgoing external inter-cell handover (excluding directed retry) procedure, the
BSC measures the related counter when the handover fails. The measurement is based on
the crossing of frequency bands, channel type, different signaling points, reject cause,
RR cause, clear command sent by MSC and A-interface failure, timer expired, and
handover cause.
Along with Outgoing External Inter-Cell Handover Requests per Cell and Outgoing
External Inter-Cell Handover Commands per Cell, the counters show the performance of
outgoing external inter-cell handovers. Along with Incoming External Inter-Cell
Handover Measurement per Cell, the counters show the performance of external intercell handovers.
The crossing of frequency bands is of the following types:
Issue 02 (2007-02-06)
−
900/850 to 900/850
−
1800/1900 to 1800/1900
−
900/850 to 1800/1900
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Performance Counter Reference
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−
1800/1900 to 900/850
The channel involved in the measurement is of the following types:
−
SDCCH
−
TCHF
−
TCHH
The handover between different signaling points in a BSC is also called outgoing
external inter-cell handover.
The reject causes consist of the following:
−
OM intervention
−
Equipment failure
−
No radio resource available
−
Requested terrestrial resource unavailable
−
BSS not equipped
−
Invalid Cell
−
Requested transcoding/rate adaption unavailable
−
Circuit pool mismatch
−
Requested Speech version unavailable
−
Ciphering algorithm not supported
−
Terrestrial circuit already allocated
−
Invalid message
−
Protocol Error between BSS and MSC
−
Other causes
The RR causes of reconnection to old channels consist of the following:
−
Abnormal release, unspecified
−
Abnormal release, channel unacceptable
−
Abnormal release, timer expired
−
Abnormal release, no activity on the radio path
−
Preemptive release
−
Handover failed, timing advance out of range
−
Channel mode unavailable
−
Frequency unavailable
−
Call already cleared
−
Semantically incorrect message
−
Invalid mandatory information
−
Message type non-existent or not implemented
−
Message type not compatible with protocol state
−
Conditional IE error
−
No cell allocation available
−
Protocol error unspecified
−
Other causes
The clear commands sent by MSC and A-interface failure consist of the following:
−
11-156
Radio interface message failure
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Performance Counter Reference
−
Radio interface failure
−
OM intervention
−
Equipment failure
−
Preemption
−
Invalid message
−
Protocol Error between BSS and MSC
−
Other causes
11 Call Measurement
The A interface failure occurs when the message such as MSC reset and SCCP links
disruption is sent on the A interface.
The timers involved in the measurement consist of T7 and T8. T7 is triggered to wait for
an HO CMD message from the MSC after BSC1 sends an HO RQD message to the MSC.
T8 is triggered to wait for a CLR CMD message from the MSC after BSC1 sends an HO
CMD message to the MS through the source cell.
The handover causes consist of the following:
z
−
Uplink quality
−
Downlink quality
−
Uplink strength
−
Downlink strength
−
Timing advance
−
Better cell
−
Load
−
Rapid level drop
−
MSC intervention
−
OM intervention
−
EDGE coverage
−
Other causes
Failed Outgoing External Inter-Cell Handovers (Directed Retry)
In the outgoing external inter-cell handover (directed retry) procedure, the BSC measures
the related counter when the handover fails. The measurement is based on the crossing of
frequency bands, different signaling points, reject cause, clear command sent by MSC
and A-interface failure, and timer expired.
Along with Outgoing External Inter-Cell Handover Requests per Cell and Outgoing
External Inter-Cell Handover Commands per Cell, the counters show the performance of
outgoing external inter-cell handovers. Along with Incoming External Inter-Cell
Handover Measurement per Cell, the counters show the performance of external intercell handovers.
The crossing of frequency bands is of the following types:
−
900/850 to 900/850
−
1800/1900 to 1800/1900
−
900/850 to 1800/1900
−
1800/1900 to 900/850
The handover between different signaling points in a BSC is also called outgoing
external inter-cell handover.
The reject causes consist of the following:
−
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OM intervention
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Performance Counter Reference
11 Call Measurement
−
Equipment failure
−
No radio resource available
−
Requested terrestrial resource unavailable
−
BSS not equipped
−
Invalid Cell
−
Requested transcoding/rate adaption unavailable
−
Circuit pool mismatch
−
Requested speech version unavailable
−
Ciphering algorithm not supported
−
Terrestrial circuit already allocated
−
Invalid message
−
Protocol error between BSS and MSC
−
Other causes
The clear commands sent by MSC and A-interface failure consist of the following:
−
Radio interface message failure
−
Radio interface failure
−
OM intervention
−
Equipment failure
−
Preemption
−
Invalid message
−
Protocol error between BSS and MSC
−
Other causes
The A interface failure occurs when the message such as MSC reset and SCCP links
disruption is sent on the A interface.
The timers involved in the measurement consist of T7 and T8. T7 is triggered to wait for
an HO CMD message from the MSC after BSC1 sends an HO RQD message to the MSC.
T8 is triggered to wait for a CLR CMD message from the MSC after BSC1 sends an HO
CMD message to the MS through the source cell.
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Trigger Point
Figure 11-22 and Figure 11-23 show the trigger points of Failed Outgoing External Inter-Cell
Handovers (Excluding Directed Retry) and Failed Outgoing External Inter-Cell Handovers
(Directed Retry) respectively.
Figure 11-22 Trigger points of Failed Outgoing External Inter-Cell Handovers (Excluding
Directed Retry)
MS
BTS1
BSC1
MSC
BSC2
MS
BTS2
MR FROM MS
HO RQD
HO REQ
HO
RQD REJ
C
HO FAIL
HO
REQ ACK
T7 expired
Resource
request failed
In the
outgoing
external
inter-cell
handover
procedure
CHAN ACTIV
CHAN
ACTIV ACK
G
HO ACC
HO CMD
HO CMD
HO DETECT
HO DETECT
PHY INFO
A
FIRST SABM
Reconnection
to old channel
E
EST IND
UA
F
D
T7 expired
H
HO CMP
HO CMP
CLR CMD
CLR CMP
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Figure 11-23 Failed Outgoing External Inter-Cell Handovers (Directed Retry)
MS
BTS1(CELL1)
BSC1
BSC2
MSC
BTS2(CELL0)
MS
CHAN REQ
CHAN RQD
CHAN ACTIV
CHAN
ACTIV ACK
IMM ASS CMD
FIRST
SABM
UA
EST IND(CM
SERV REQ)
CR(CM
SERV REQ)
CC
CM SERV ACCEPT
SETUP
CALL PROCEEDING
ASSIGN
REQ
HO RQD
HO REQ
HO
RQD REJ
C
G
Resource
request failed
HO FAIL
HO
REQ ACK
T7 expired
In the
outgoing
external
inter-cell
handover
(directed
retry)
procedure
CHAN ACTIV
CHAN
ACTIV ACK
HO ACC
B
HO CMD
HO CMD
HO
DETECT
HO DETECT
PHY INFO
E
FIRST SABM
F
EST IND
T8 expired
UA
HO CMP
H
HO CMP
CLR CMD
CLR CMP
A: Failed Outgoing External Inter-Cell Handovers (Excluding Directed Retry)
B: Failed Outgoing External Inter-Cell Handovers (Directed Retry)
C: Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected)
D: Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels)
E: Failed Outgoing External Inter-Cell Handovers (Clear Commands Sent by MSC)
F: Failed Outgoing Internal Inter-Cell Handovers (A-Interface Failure)
G: Failed Outgoing Internal Inter-Cell Handovers (T7 Expired)
H: Failed Outgoing Internal Inter-Cell Handovers (T8 Expired)
The trigger points of the counters are as follows:
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11 Call Measurement
Failed Outgoing External Inter-Cell Handovers (Excluding Directed Retry)
As shown in Figure 11-22, in the outgoing external inter-cell handover (excluding
directed retry) procedure, the related measurement is triggered when the handover fails.
The measurement is based on the crossing of frequency bands, channel type, different
signaling points, and handover cause.
The crossing of frequency bands is of the following types:
−
900/850 to 900/850
−
1800/1900 to 1800/1900
−
900/850 to 1800/1900
−
1800/1900 to 900/850
The channel involved in the measurement is of the following types:
−
SDCCH
−
TCHF
−
TCHH
The handover between different signaling points in a BSC is also called outgoing
external inter-cell handover.
The handover causes consist of the following:
z
−
Uplink quality
−
Downlink quality
−
Uplink strength
−
Downlink strength
−
Timing advance
−
Better cell
−
Load
−
Rapid level drop
−
MSC intervention
−
OM intervention
−
EDGE coverage
−
Other causes
Failed Outgoing External Inter-Cell Handovers (Directed Retry)
As shown in Figure 11-22, in the outgoing external inter-cell handover (directed retry)
procedure, the related measurement is triggered when the handover fails. The
measurement is based on the crossing of frequency bands and the different signaling
points.
The crossing of frequency bands is of the following types:
−
900/850 to 900/850
−
1800/1900 to 1800/1900
−
900/850 to 1800/1900
−
1800/1900 to 900/850
The handover between different signaling points in a BSC is also called outgoing
external inter-cell handover.
z
Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected)
As shown in Figure 11-22 and Figure 11-23, when the BSC receives an HO FAIL
message from BSC2, it analyzes the failure cause and sends an HO RQD REJ message to
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BSC1. The related measurement is triggered when the MSC sends an HO RQD REJ
message to BSC1. The measurement is based on the reject cause carried in the HO RQD
REJ message.
The reject causes consist of the following:
z
−
OM intervention
−
Equipment failure
−
No radio resource available
−
Requested terrestrial resource unavailable
−
BSS not equipped
−
Invalid cell
−
Requested transcoding/rate adaption unavailable
−
Circuit pool mismatch
−
Requested Speech version unavailable
−
Ciphering algorithm not supported
−
Terrestrial circuit already allocated
−
Invalid message
−
Protocol error between BSS and MSC
−
Other cause
Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels)
As shown in Figure 11-22, in the outgoing external inter-cell handover (excluding
directed retry) procedure, the measurement is triggered when the MS reconnects to the
old channel and sends an HO FAIL message on the old channel. The measurement is
based on the RR cause.
The RR causes consist of the following:
z
11-162
−
Abnormal release, unspecified
−
Abnormal release, channel unacceptable
−
Abnormal release, timer expired
−
Abnormal release, no activity on the radio path
−
Preemptive release
−
Handover failed, timing advance out of range
−
Channel mode unavailable
−
Frequency unavailable
−
Call already cleared
−
Semantically incorrect message
−
Invalid mandatory information
−
Message type non-existent or not implemented
−
Message type not compatible with protocol state
−
Conditional IE error
−
No cell allocation available
−
Protocol error unspecified
−
Other causes
Failed Outgoing External Inter-Cell Handovers (Clear Commands Sent by MSC)
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As shown in Figure 11-22 and Figure 11-23, in the outgoing external inter-cell handover
(including directed retry) procedure, the measurement is triggered when BSC1 receives a
CLR CMD message from the MSC. The measurement is based on the cause carried in
the CLR CMD message.
The causes consist of the following:
z
−
Radio interface message failure
−
Radio interface failure
−
OM intervention
−
Equipment failure
−
Preemption
−
Invalid message
−
Protocol error between BSS and MSC
−
Other causes
Failed Outgoing External Inter-Cell Handovers (A-Interface Failure)
As shown in Figure 11-22 and Figure 11-23, in the outgoing external inter-cell handover
(including directed retry) procedure, the measurement is triggered when BSC1 receives
an A interface failure message. The measurement is performed in the source cell.
z
Failed Outgoing External Inter-Cell Handovers (T7 Expired)
As shown in Figure 11-22 and Figure 11-23, in the outgoing external inter-cell handover
(including directed retry) procedure, the measurement is triggered when T7 expires. T7
is triggered to wait for an HO CMD message from the MSC after BSC1 sends an HO
RQD message to the MSC. The measurement is based on the channel type.
The channel involved in the measurement is of the following types:
−
SDCCH
−
TCHF
−
TCHH
If directed retry is performed in the outgoing external inter-cell handover procedure, the
channel involved in the measurement is a traffic channel. If no directed retry is
performed in the outgoing external inter-cell handover procedure, the channel involved
in the measurement can be a traffic channel or a signaling channel.
z
Failed Outgoing External Inter-Cell Handovers (T8 Expired)
As shown in Figure 11-22 and Figure 11-23, in the outgoing external inter-cell handover
(including directed retry) procedure, the measurement is triggered when T8 expires. T8
is triggered to wait for a CLR CMD message from the MSC after BSC1 sends an HO
CMD message to the MS through the source cell. If T8 expires, the MS does not access
the target cell or reconnect to the old channel within the scheduled time. The
measurement is based on the channel type.
If directed retry is performed in the outgoing external inter-cell handover procedure, the
channel involved in the measurement is a traffic channel. If no directed retry is
performed in the outgoing external inter-cell handover procedure, the channel involved
in the measurement can be a traffic channel or a signaling channel.
Formula
None.
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11.14.5 Outgoing External Inter-Cell Handover Analyzed
Measurement per Cell
Counter
Table 11-65 lists the counters of Outgoing External Inter-Cell Handover Analyzed
Measurement per Cell.
Table 11-65 Counters of Outgoing External Inter-Cell Handover Analyzed Measurement per Cell
Number
Counter
1
CH330: Outgoing External Inter-Cell Handover Requests
2
CH333: Successful Outgoing External Inter-Cell Handovers
3
CH331: Outgoing External Inter-Cell Handover Commands
4
CH332: Failed Outgoing External Inter-Cell Handovers
5
TH333: Success Rate of Outgoing External Inter-Cell Handover
6
CH332K: Failed Outgoing External Inter-Cell Handovers (Handover Request
Rejected)
7
CH332D: Failed Outgoing External Inter-Cell Handovers (Reconnection to
Old Channels)
8
CH332H: Failed Outgoing External Inter-Cell Handovers (Clear Commands
Sent by MSC)
9
CH332L: Failed Outgoing External Inter-Cell Handovers (T7 Expired)
10
CH332C: Failed Outgoing External Inter-Cell Handovers (T8 Expired)
Meaning
None.
Trigger Point
None.
Formula
Outgoing External Inter-Cell Handover Requests =
[Outgoing External Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry)
(900/850-900/850)] +
[Outgoing External Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry)
(1800/1900-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry)
(900/850-1800/1900)] +
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[Outgoing External Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Outgoing External Inter-Cell Handover Requests (TCHF) (Excluding Directed Retry)
(900/850-900/850)] +
[Outgoing External Inter-Cell Handover Requests (TCHF) (Excluding Directed Retry)
(1800/1900-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (TCHF) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (TCHF) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Outgoing External Inter-Cell Handover Requests (TCHH) (Excluding Directed Retry)
(900/850-900/850)] +
[Outgoing External Inter-Cell Handover Requests (TCHH) (Excluding Directed Retry)
(1800/1900-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (TCHH) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (TCHH) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Outgoing External Inter-Cell Handover Requests (Directed Retry) (900/850-900/850)] +
[Outgoing External Inter-Cell Handover Requests (Directed Retry) (1800/1900-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (Directed Retry) (900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (Directed Retry) (1800/1900-900/850)]
Successful Outgoing External Inter-Cell Handovers =
[Outgoing External Inter-Cell Handover Requests][Failed Outgoing External Inter-Cell Handovers]
Outgoing External Inter-Cell Handover Commands =
[Outgoing External Inter-Cell Handover Commands (SDCCH) (Excluding Directed Retry)
(900/850-900/850)] +
[Outgoing External Inter-Cell Handover Commands (SDCCH) (Excluding Directed Retry)
(1800/1900-1800/1900)] +
[Outgoing External Inter-Cell Handover Commands (SDCCH) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Commands (SDCCH) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Outgoing External Inter-Cell Handover Commands (TCHF) (Excluding Directed Retry)
(900/850-900/850)] +
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[Outgoing External Inter-Cell Handover Commands (TCHF) (Excluding Directed Retry)
(1800/1900-1800/1900)] +
[Outgoing External Inter-Cell Handover Commands (TCHF) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Commands (TCHF) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Outgoing External Inter-Cell Handover Commands (TCHH) (Excluding Directed Retry)
(900/850-900/850)] +
[Outgoing External Inter-Cell Handover Commands (TCHH) (Excluding Directed Retry)
(1800/1900-1800/1900)] +
[Outgoing External Inter-Cell Handover Commands (TCHH) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Commands (TCHH) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Outgoing External Inter-Cell Handover Commands (Directed Retry) (900/850-900/850)] +
[Outgoing External Inter-Cell Handover Commands (Directed Retry) (1800/1900-1800/1900)]
+
[Outgoing External Inter-Cell Handover Commands (Directed Retry) (900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Commands (Directed Retry) (1800/1900-900/850)]
Failed Outgoing External Inter-Cell Handovers =
[Failed Outgoing External Inter-Cell Handovers (SDCCH) (Excluding Directed Retry)
(900/850-900/850)] +
[Failed Outgoing External Inter-Cell Handovers (SDCCH) (Excluding Directed Retry)
(1800/1900-1800/1900)] +
[Failed Outgoing External Inter-Cell Handovers (SDCCH) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Failed Outgoing External Inter-Cell Handovers (SDCCH) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Failed Outgoing External Inter-Cell Handovers (TCHF) (Excluding Directed Retry)
(900/850-900/850)] +
[Failed Outgoing External Inter-Cell Handovers (TCHF) (Excluding Directed Retry)
(1800/1900-1800/1900)] +
[Failed Outgoing External Inter-Cell Handovers (TCHF) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Failed Outgoing External Inter-Cell Handovers (TCHF) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Failed Outgoing External Inter-Cell Handovers (TCHH) (Excluding Directed Retry)
(900/850-900/850)] +
[Failed Outgoing External Inter-Cell Handovers (TCHH) (Excluding Directed Retry)
(1800/1900-1800/1900)] +
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[Failed Outgoing External Inter-Cell Handovers (TCHH) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Failed Outgoing External Inter-Cell Handovers (TCHH) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Failed Outgoing External Inter-Cell Handovers (Directed Retry) (900/850-900/850)] +
[Failed Outgoing External Inter-Cell Handovers (Directed Retry) (1800/1900-1800/1900)] +
[Failed Outgoing External Inter-Cell Handovers (Directed Retry) (900/850-1800/1900)] +
[Failed Outgoing External Inter-Cell Handovers (Directed Retry) (1800/1900-900/850)]
Success Rate of Outgoing External Inter-Cell Handover =
[Successful Outgoing External Inter-Cell Handovers] *{100}/[Outgoing External Inter-Cell
Handover Requests]
Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) =
[Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) (OM
Intervention)] +
[Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) (Equipment
Failure)] +
[Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) (No Radio
Resource Available)] +
[Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) (Requested
Terrestrial Resource Unavailable)] +
[Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) (BSS not
Equipped)] +
[Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) (Invalid Cell)]
+
[Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) (Requested
Transcoding/Rate Adaption Unavailable)] +
[Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) (Circuit Pool
Mismatch)] +
[Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) (Requested
Speech Version Unavailable)] +
[Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) (Ciphering
Algorithm not Supported)] +
[Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) (Terrestrial
circuit already allocated)] +
[Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) (Invalid
Message)] +
[Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) (Protocol Error
between BSS and MSC)] +
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[Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) (Other Causes)]
Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) =
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (Abnormal
Release, Unspecified)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (Abnormal
Release, Channel Unacceptable)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (Abnormal
Release, Timer Expired)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (Abnormal
Release, No Activity on the Radio Path)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (Preemptive
Release)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (Handover
Failed, Timing Advance out of Range)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (Channel
Mode Unavailable)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (Frequency
Unavailable)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (Call
Already Cleared)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels)
(Semantically Incorrect Message)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (Invalid
Mandatory Information)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (Message
Type Non-existent or Not Implemented)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (Message
Type Not Compatible with Protocol State)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (Conditional
IE Error)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (No Cell
Allocation Available)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (Protocol
Error Unspecified)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (Other
Causes)]
Failed Outgoing External Inter-Cell Handovers (Clear Commands Sent by MSC) =
[Failed Outgoing External Inter-Cell Handovers (Clear Commands Sent by MSC) (Radio
Interface Message Failure)] +
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[Failed Outgoing External Inter-Cell Handovers (Clear Commands Sent by MSC) (Radio
Interface Failure)] +
[Failed Outgoing External Inter-Cell Handovers (Clear Commands Sent by MSC) (OM
Intervention)] +
[Failed Outgoing External Inter-Cell Handovers (Clear Commands Sent by MSC) (Equipment
Failure)] +
[Failed Outgoing External Inter-Cell Handovers (Clear Commands Sent by MSC)
(Preemption)] +
[Failed Outgoing External Inter-Cell Handovers (Clear Commands Sent by MSC) (Invalid
Message)] +
[Failed Outgoing External Inter-Cell Handovers (Clear Commands Sent by MSC) (Protocol
Error between BSS and MSC)] +
[Failed Outgoing External Inter-Cell Handovers (Clear Commands Sent by MSC) (Other
Causes)]
Failed Outgoing External Inter-Cell Handovers (T7 Expired) =
[Failed Outgoing External Inter-Cell Handovers (T7 Expired) (SDCCH) (Excluding Directed
Retry)] +
[Failed Outgoing External Inter-Cell Handovers (T7 Expired) (TCHF) (Signaling Channel)] +
[Failed Outgoing External Inter-Cell Handovers (T7 Expired) (TCHH) (Signaling Channel)] +
[Failed Outgoing External Inter-Cell Handovers (T7 Expired) (TCHF) (Traffic Channel)] +
[Failed Outgoing External Inter-Cell Handovers (T7 Expired) (TCHH) (Traffic Channel)] +
[Failed Outgoing External Inter-Cell Handovers (T7 Expired) (Directed Retry)]
Failed Outgoing External Inter-Cell Handovers (T8 Expired) =
[Failed Outgoing External Inter-Cell Handovers (T8 Expired) (SDCCH) (Excluding Directed
Retry)] +
[Failed Outgoing External Inter-Cell Handovers (T8 Expired) (TCHF) (Signaling Channel)] +
[Failed Outgoing External Inter-Cell Handovers (T8 Expired) (TCHH) (Signaling Channel)] +
[Failed Outgoing External Inter-Cell Handovers (T8 Expired) (TCHF) (Traffic Channel)] +
[Failed Outgoing External Inter-Cell Handovers (T8 Expired) (TCHH) (Traffic Channel)] +
[Failed Outgoing External Inter-Cell Handovers (T8 Expired) (Directed Retry)]
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11.15 Incoming Inter-RAT Inter-Cell Handover
Measurement per Cell
11.15.1 Overview
The conventions used in this section are as follows:
z
The MSC of the local system is referred to as MSC 1, and that of another system is referred to as
MSC 2.
z
The BSC of the local system is referred to as BSC 1.
z
The BTS of the local system is referred to as BTS 1.
The procedure for incoming inter-RAT inter-cell handover is as follows:
MSC 2 sends a PERFORM HO message to MSC 1. Based on the information of the target
cell in this message and the mapping between cells and BSCs in the MSC 1 data configuration,
MSC 1 finds out the corresponding BSC, that is, BSC 1, and sends an HO ERQ message to
BSC 1. Based on the information of the target cell, BSC 1 requests channel resources from the
target cell. After the request succeeds, BSC 1 sends a CHAN ACTIV message to the target
cell. BTS 1 sends a CHAN ACTIV ACK message from the target cell to BSC 1. BSC 1
requests the resources for voice service. After the request succeeds, BSC 1 sends an HO REQ
ACK message to MSC 1.
After receiving an HO CMD message from another system, the MS sends an HO ACC
message to BTS 1, attempting to access the new system from the target cell. BTS 1 reports an
HO DETECT message to MSC 1 through BSC 1. At the same time, BTS 1 sends a PHY
INFO message to the MS. The MS sends a FIRST SABM message to access the network.
BTS 1 sends an EST IND message to BSC 1. At the same time, BTS 1 responds the MS with
a UA message. After accessing the network, the MS sends an HO CMP message to MSC 1
through the target cell.
Here, the incoming inter-RAT inter-cell handover is complete.
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Figure 11-24 Incoming inter-RAT inter-cell handover procedure
MSC2
MSC1
BSC1
BTS1
MS
PERFORM HO
HO REQ
A
CHAN ACTIV
CHAN ACTIV ACK
HO REQ ACK
RADIO CHAN ACK
B
IAM
ACM
HO ACC
HO DETECT
HO DETECT
PHY INFO
FIRST SABM
EST IND
UA
HO CMP
HO CMP
SEND END SIG
A: Request for incoming inter-RAT inter-cell handover
B: Respond to the request for incoming inter-RAT inter-cell handover
Table 11-66 lists the counter types of Incoming Inter-RAT Inter-Cell Handover Measurement
per Cell.
Table 11-66 Counter types of Incoming Inter-RAT Inter-Cell Handover Measurement per Cell
Counter Type
Section
Incoming Inter-RAT Inter-Cell Handover Requests per Cell
11.15.2
Incoming Inter-RAT Inter-Cell Handover Responses per Cell
11.15.3
Failed Incoming Inter-RAT Inter-Cell Handovers per Cell
11.15.4
Incoming Inter-RAT Inter-Cell Handover Analyzed Measurement per Cell
11.15.5
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11.15.2 Incoming Inter-RAT Inter-Cell Handover Requests per
Cell
Counter
Table 11-67 lists the counters of Incoming Inter-RAT Inter-Cell Handover Requests per Cell.
Table 11-67 Counters of Incoming Inter-RAT Inter-Cell Handover Requests per Cell
Number
Counter
1
H3600: Incoming Inter-RAT Inter-Cell Handover Requests (SDCCH)
2
H3609: Incoming Inter-RAT Inter-Cell Handover Requests (TCH)
Meaning
When receiving an HO ERQ message from MSC 1, BSC 1 performs the measurement based
on the channel type if deciding to perform an inter-RAT handover.
Along with Incoming Inter-RAT Inter-Cell Handover Responses per Cell and Failed Incoming
Inter-RAT Inter-Cell Handovers per Cell, this type of counters can help you to better
understand the situation of incoming inter-RAT inter-cell handover.
Along with Outgoing Inter-RAT Inter-Cell Handover Measurement per Cell, this type of
counters can help you to better understand the performance of incoming inter-RAT inter-cell
handover.
The channel type may be SDCCH or TCH.
Trigger Point
The measurement is triggered at point A as shown in Figure 11-24, that is, when BSC 1
receives an HO REQ message from MSC 1. For an inter-RAT handover, the measurement is
based on the channel type.
Formula
None.
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11.15.3 Incoming Inter-RAT Inter-Cell Handover Responses per
Cell
Counter
Table 11-68 list the counters of Incoming Inter-RAT Inter-Cell Handover Responses per Cell.
Table 11-68 Counters of Incoming Inter-RAT Inter-Cell Handover Responses per Cell
Number
Counter
1
H3610: Incoming Inter-RAT Inter-Cell Handover Responses (SDCCH)
2
H3617: Incoming Inter-RAT Inter-Cell Handover Responses (TCHF)
3
H3618: Incoming Inter-RAT Inter-Cell Handover Responses (TCHH)
Meaning
When responding MSC 1 with an HO REQ ACK message, BSC 1 performs the measurement
based on the channel type.
Along with Incoming Inter-RAT Inter-Cell Handover Responses per Cell and Failed Incoming
Inter-RAT Inter-Cell Handovers per Cell, this type of counters can help you to better
understand the situation of incoming inter-RAT inter-cell handovers.
Along with Outgoing Inter-RAT Inter-Cell Handover Measurement per Cell, this type of
counters can help you to better understand the performance of incoming inter-RAT inter-cell
handovers.
The channel type may be SDCCH, TCHH, or TCHF.
Trigger Point
The measurement is triggered at point B as shown in Figure 11-24, that is, when BSC 1
responds MSC 1 with an HO REQ ACK message. The measurement is based on the channel
type.
Formula
None.
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11.15.4 Failed Incoming Inter-RAT Inter-Cell Handovers per Cell
Counter
Table 11-69 list the counters of Failed Incoming Inter-RAT Inter-Cell Handovers per Cell.
Table 11-69 Counters of Failed Incoming Inter-RAT Inter-Cell Handovers per Cell
Number
Counter
1
H3620: Failed Incoming Inter-RAT Inter-Cell Handovers (SDCCH)
2
H3627: Failed Incoming Inter-RAT Inter-Cell Handovers (TCHF)
3
H3628: Failed Incoming Inter-RAT Inter-Cell Handovers (TCHH)
4
H362J: Failed Incoming Inter-RAT Inter-Cell Handovers (Invalid Message)
5
H3620A: Failed Incoming Inter-RAT Inter-Cell Handovers (Channel
Unavailable) (SDCCH)
6
H3629A: Failed Incoming Inter-RAT Inter-Cell Handovers (Channel
Unavailable) (TCH)
7
H362E: Failed Incoming Inter-RAT Inter-Cell Handovers (CIC Unavailable)
8
H362F: Failed Incoming Inter-RAT Inter-Cell Handovers (CIC Allocated)
9
H362B: Failed Incoming Inter-RAT Inter-Cell Handovers (Terrestrial Resource
Request Failed)
10
H362H: Failed Incoming Inter-RAT Inter-Cell Handovers (Clear Commands
Sent by MSC)
11
H3620C: Failed Incoming Inter-RAT Inter-Cell Handovers (Timer Expired)
(SDCCH)
12
H3629Cb: Failed Incoming Inter-RAT Inter-Cell Handovers (Timer Expired)
(TCH) (Signaling Channel)
13
H3629Ca: Failed Incoming Inter-RAT Inter-Cell Handovers (Timer Expired)
(TCH) (Traffic Channel)
Meaning
When an incoming inter-RAT inter-cell handover fails, BSC 1 performs the measurement
based on the channel type, triggering condition, and failure cause.
Along with Incoming Inter-RAT Inter-Cell Handover Requests per Cell and Incoming InterRAT Inter-Cell Handover Responses per Cell, this type of counters can help you to better
understand the situation of incoming inter-RAT inter-cell handovers.
Along with Outgoing Inter-RAT Inter-Cell Handover Measurement per Cell, this type of
counters can help you to better understand the performance of incoming inter-RAT inter-cell
handovers.
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The channel type may be SDCCH, TCHF, or TCHH.
The triggering condition of a failure in incoming inter-RAT inter-cell handover may be Invalid
Message, Channel Unavailable, CIC abnormal, Terrestrial Resource Request Failed, Clear
Commands Sent by MSC, or Timer Expired.
The failure cause may be CIC Unavailable or CICI Allocated.
Trigger Point
The measurement is triggered at any of points A to G as shown in Figure 11-25.
Figure 11-25 Incoming inter-RAT inter-cell handover procedure
MSC2
MSC1
BSC1
MS
BTS1
PERFORM HO
HO REQ
B
C
CHAN ACTIV
CHAN ACTIV ACK
D
E
RADIO
CHAN ACK
IAM
A
HO REQ ACK
F
HO ACC
HO DETECT
ACM
PHY INFO
HO DETECT
FIRST SABM
EST IND
Handover
timer timeout
UA
G
HO CMP
HO CMP
SEND END SIG
A: Failed Incoming Inter-RAT Inter-Cell Handovers
B: Failed Incoming Inter-RAT Inter-Cell Handovers (Invalid Message)
C: Failed Incoming Inter-RAT Inter-Cell Handover Requests (Channel Unavailable)
D: Failed Incoming Inter-RAT Inter-Cell Handovers (CIC abnormal)
E: Failed Incoming Inter-RAT Inter-Cell Handovers (Terrestrial Resource Request Failed)
F: Failed Incoming Inter-RAT Inter-Cell Handovers (Clear Commands Sent by MSC)
G: Failed Incoming Inter-RAT Inter-Cell Handovers (Timer Expired)
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z
Failed Incoming Inter-RAT Inter-Cell Handovers
When an incoming inter-RAT inter-cell handover fails, BSC 1 performs the measurement
based on the channel type.
The channel type may be SDCCH, TCHF, or TCHH.
z
Failed Incoming Inter-RAT Inter-Cell Handovers (Invalid Message)
When receiving an HO REQ message from MSC 1, BSC 1 decodes the message. When
finding out that the message is not compliant with the protocol requirements during the
decoding, BSC 1 performs the measurement.
z
Failed Incoming Inter-RAT Inter-Cell Handovers (Channel Unavailable)
When the target cell responds BSC 1 that the request for channel resources fails because
of channel unavailable, BSC 1 performs the measurement based on the channel type.
The channel type may be SDCCH or TCH.
z
Failed Incoming Inter-RAT Inter-Cell Handovers (CIC Unavailable)
When failing to request terrestrial resources because of CIC abnormal, BSC 1 performs
the measurement based on the failure cause. Where, the CIC is carried in the HO REQ
message.
The failure cause may be CIC Unavailable or CIC Allocated.
z
Failed Incoming Inter-RAT Inter-Cell Handovers (Terrestrial Resource Request Failed)
When failing to request terrestrial resources not because of CIC abnormal, BSC 1
performs the measurement. Where, the CIC is carried in the HO REQ message.
z
Failed Incoming Inter-RAT Inter-Cell Handovers (Clear Commands Sent by MSC)
When receiving a CLR CMD message from MSC 1, BSC 1 performs the measurement.
z
Failed Incoming Inter-RAT Inter-Cell Handovers (Timer Expired)
When failing to receive an HO CMP message from the MS through the target cell before
the timer is expired, BSC 1 performs the measurement based on the channel type.
The channel type may be SDCCH or TCH. Here, the TCH may be a traffic channel or a
signaling channel.
Formula
None.
11.15.5 Incoming Inter-RAT Inter-Cell Handover Analyzed
Measurement per Cell
Counter
Table 11-70 lists the counters of Incoming Inter-RAT Inter-Cell Handover Analyzed
Measurement per Cell.
Table 11-70 Counters of Incoming Inter-RAT Inter-Cell Handover Analyzed Measurement per
Cell
11-176
Number
Counter
1
CH360: Incoming Inter-RAT Inter-Cell Handover Requests
2
CH363: Successful Incoming Inter-RAT Inter-Cell Handovers
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Number
Counter
3
TH363: Success Rate of Incoming Inter-RAT Inter-Cell Handover
4
CH361: Incoming Inter-RAT Inter-Cell Handover Responses
5
H362: Failed Incoming Inter-RAT Inter-Cell Handovers
6
H362C: Failed Incoming Inter-RAT Inter-Cell Handovers (Timer Expired)
Meaning
None.
Trigger Point
None.
Formula
Incoming Inter-RAT Inter-Cell Handover Requests =
[Incoming Inter-RAT Inter-Cell Handover Requests (SDCCH)] +
[Incoming Inter-RAT Inter-Cell Handover Requests (TCH)]
Successful Incoming Inter-RAT Inter-Cell Handovers =
[Incoming Inter-RAT Inter-Cell Handover Requests (SDCCH)] +
[Incoming Inter-RAT Inter-Cell Handover Requests (TCH)][Failed Incoming Inter-RAT Inter-Cell Handovers (SDCCH)][Failed Incoming Inter-RAT Inter-Cell Handovers (TCHF)][Failed Incoming Inter-RAT Inter-Cell Handovers (TCHH)]
Success Rate of Incoming Inter-RAT Inter-Cell Handover =
[Successful Incoming Inter-RAT Inter-Cell Handovers]*{100}/[Incoming Inter-RAT InterCell Handover Requests]
Incoming Inter-RAT Inter-Cell Handover Responses =
[Incoming Inter-RAT Inter-Cell Handover Responses (SDCCH)] +
[Incoming Inter-RAT Inter-Cell Handover Responses (TCHF)] +
[Incoming Inter-RAT Inter-Cell Handover Responses (TCHH)]
Failed Incoming Inter-RAT Inter-Cell Handovers =
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[Failed Incoming Inter-RAT Inter-Cell Handovers (SDCCH)] +
[Failed Incoming Inter-RAT Inter-Cell Handovers (TCHF)] +
[Failed Incoming Inter-RAT Inter-Cell Handovers (TCHH)]
Failed Incoming Inter-RAT Inter-Cell Handovers (Timer Expired)=
[Failed Incoming Inter-RAT Inter-Cell Handovers (Timer Expired) (SDCCH)] +
[Failed Incoming Inter-RAT Inter-Cell Handovers (Timer Expired) (TCH) (Signaling
Channel)] +
[Failed Incoming Inter-RAT Inter-Cell Handovers (Timer Expired) (TCH) (Traffic Channel)]
11.16 Outgoing Inter-RAT Inter-Cell Handover
Measurement per Cell
11.16.1 Overview
The conventions used in this section are as follows:
z
The BSC of the source cell is referred to as BSC 2. The BSC of the target cell is referred to as BSC 1.
z
The BTS corresponds to BSC 2 is referred to as BTS 2.
z
The MSC corresponds to BSC 2 is referred to as MSC 2.
Outgoing Inter-RAT Inter-Cell Handover Measurement per Cell has the following two types:
z
Outgoing Inter-RAT Inter-Cell Handover Measurement per Cell (Excluding Directed
Retry)
The MS sends a measurement report to BSC 2. Based on the current load and signal
interference of the cell as well as the signal quality and RX/TX level in the measurement
report, BSC 2 decides whether to perform a handover. If deciding to perform a handover,
BSC 2 sends a handover triggering indication to the corresponding processing module. If
the target cell is in another system, BSC 2 initiates an inter-RAT handover outgoing from
the source cell.
BSC 2 sends an HO RQD message to MSC 2, requesting MSC 2 to notify the other
system. Based on its data configuration, MSC 2 finds out the corresponding MSC, that is,
MSC 1, and a handover request to MSC 1. After preparing for the handover, the other
system notifies MSC 2. MSC 2 sends an HO CMD message to BSC 2, requesting BSC 2
to notify the MS. BSC 2 sends an HO CMD message to the MS through the source cell,
requesting the MS to access the network in the target cell.
After the access succeeds, MSC 1 notifies MSC 2 that the incoming inter-RAT inter-cell
handover is complete. MSC 2 sends a CLR CMD message to BSC 2. After instructing
the source cell to release related resources, BSC 2 responds MSC 2 with a CLR CMP
message.
Here, the outgoing inter-RAT inter-cell handover is complete.
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Figure 11-26 Outgoing inter-RAT inter-cell handover procedure (excluding directed retry)
MSC1
BSC2
MSC2
BTS2
MS
MR FROM MS
A
HO RQD
PERFORM HO
RADIO CHAN ACK
IAM
ACM
HO CMD
HO CMD
B
SEND END SIG
CLR CMD
CLR CMP
A: Request for an outgoing inter-RAT inter-cell handover
B: Command for an incoming inter-RAT inter-cell handover
z
Outgoing Inter-RAT Inter-Cell Handover Measurement per Cell (Directed Retry)
After receiving an ASSIGN REQ message from MSC 2, BSC 2 decides the assignment
mode based on the load of the cell. There are three assignment procedures: normal
assignment procedure, directed retry procedure, and assignment modification procedure.
If the load of the cell is so high that the cell cannot admit a new service or that a new
service will affect current services, BSC 2 decides to perform a directed retry. If the
target cell selected during the directed retry belongs to another system, BSC 2 initiates
an inter-RAT inter-cell handover procedure outgoing from the source cell.
BSC 2 sends an HO RQD message to MSC 2, requesting MSC 2 to notify the other
system. Based on its data configuration, MSC 2 finds out the corresponding MSC, that is,
MSC 1, and a handover request to MSC 1. After preparing for the handover, the other
system notifies MSC 2. MSC 2 sends an HO CMD message to BSC 2, requesting BSC 2
to notify the MS. BSC 2 sends an HO CMD message to the MS through the source cell,
requesting the MS to access the network in the target cell. After the access succeeds,
MSC 1 notifies MSC 2 that the incoming inter-RAT inter-cell handover is complete.
MSC 2 sends a CLR CMD message to BSC 2. After instructing the source cell to release
related resources, BSC 2 responds MSC 2 with a CLR CMP message.
Here, the outgoing inter-RAT inter-cell handover during directed retry is complete.
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Figure 11-27 Outgoing inter-RAT inter-cell handover procedure (including directed retry)
MSC1
BSC2
MSC2
MS
BTS2
ASSIGN REQ
A
HO RQD
PERFORM HO
RADIO CHAN ACK
IAM
ACM
HO CMD
HO CMD
B
SEND END SIG
CLR CMD
CLR CMP
A: Request for an outgoing inter-RAT inter-cell handover
B: Command for an incoming inter-RAT inter-cell handover
Table 11-71 lists the counter types of Outgoing Inter-RAT Inter-Cell Handover Measurement
per Cell.
Table 11-71 Counter types of Outgoing Inter-RAT Inter-Cell Handover Measurement per Cell
11-180
Counter Type
Section
Outgoing Inter-RAT Inter-Cell Handover Requests per Cell
11.16.2
Outgoing Inter-RAT Inter-Cell Handover Commands per Cell
11.16.3
Failed Outgoing Inter-RAT Inter-Cell Handovers per Cell
11.16.4
Outgoing Inter-RAT Inter-Cell Handover Analyzed Measurement per Cell
11.16.5
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11.16.2 Outgoing Inter-RAT Inter-Cell Handover Requests per
Cell
Counter
Table 11-72 lists the counters of Outgoing Inter-RAT Inter-Cell Handover Requests per Cell.
Table 11-72 Counters of Outgoing Inter-RAT Inter-Cell Handover Requests per Cell
Number
Counter
1
H3500: Outgoing Inter-RAT Inter-Cell Handover Requests (SDCCH)
(Excluding Directed Retry)
2
H3507: Outgoing Inter-RAT Inter-Cell Handover Requests (TCHF)
3
H3508: Outgoing Inter-RAT Inter-Cell Handover Requests (TCHH)
Meaning
z
Outgoing Inter-RAT Inter-Cell Handover Requests (Excluding Directed Retry)
This type of counters measures the number of outgoing inter-RAT inter-cell handover
requests that are initiated according to handover decision.
Along with Outgoing Inter-RAT Inter-Cell Handover Commands per Cell and Failed
Outgoing External Inter-Cell Handovers per Cell, this type of counters can help you to
better understand the situation of outgoing inter-RAT inter-cell handovers.
Along with Incoming Inter-RAT Inter-Cell Handover Measurement per Cell, this type of
counters can help you to better understand the situation of all outgoing inter-RAT intercell handovers.
The channel type may be SDCCH.
z
Outgoing Inter-RAT Inter-Cell Handover Requests (Directed Retry)
This type of counters measures the number of outgoing inter-RAT inter-cell handover
requests that are initiated by the BSC during directed retry in an assignment procedure.
Along with Outgoing Inter-RAT Inter-Cell Handover Commands per Cell and Failed
Outgoing External Inter-Cell Handovers per Cell, this type of counters can help you to
better understand the situation of outgoing inter-RAT inter-cell handovers.
Along with Incoming Inter-RAT Inter-Cell Handover Measurement per Cell, this type of
counters can help you to better understand the situation of all outgoing inter-RAT intercell handovers.
The channel type may be TCHH or TCHF.
Trigger Point
z
Outgoing Inter-RAT Inter-Cell Handover Requests (Excluding Directed Retry)
The measurement is triggered at point A as shown in Figure 11-27, that is, when BSC 2
decides to perform an outgoing inter-RAT inter-cell handover according to measurement
reports. The measurement is based on the channel type.
z
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The measurement is triggered at point A as shown in Figure 11-27, that is, when BSC 2
decides to perform an inter-RAT directed retry. The measurement is based on the channel
type.
Formula
None.
11.16.3 Outgoing Inter-RAT Inter-Cell Handover Commands per
Cell
Counter
Table 11-73 lists the counters of Outgoing Inter-RAT Inter-Cell Handover Commands per Cell.
Table 11-73 Counters of Outgoing Inter-RAT Inter-Cell Handover Commands per Cell
Number
Counter
1
H3510: Outgoing Inter-RAT Inter-Cell Handover Commands (SDCCH)
(Excluding Directed Retry)
2
H3517: Outgoing Inter-RAT Inter-Cell Handover Commands (TCHF)
3
H3518: Outgoing Inter-RAT Inter-Cell Handover Commands (TCHH)
Meaning
This type of counters measures the number of outgoing inter-RAT inter-cell handover
commands that are sent by BSC 2 to the MS through the source cell. Along with Outgoing
Inter-RAT Inter-Cell Handover Requests per Cell and Failed Outgoing External Inter-Cell
Handovers per Cell, this type of counters can help you to better understand the situation of
outgoing inter-RAT inter-cell handovers.
Along with Incoming Inter-RAT Inter-Cell Handover Measurement per Cell, this type of
counters can help you to better understand the situation of all outgoing inter-RAT inter-cell
handovers.
The channel type may be SDCCH, TCHH, or TCHF. The directed retry procedure applies to
only traffic channels.
Trigger Point
The measurement is triggered at point B as shown in Figure 11-26 and Figure 11-27, that is,
when BSC 2 sends an HO CMD message to the MS through the source cell. Here, the
handover includes directed retry. The measurement is based on the channel type.
Formula
None.
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11.16.4 Failed Outgoing Inter-RAT Inter-Cell Handovers per Cell
Counter
Table 11-74 lists the counters of Failed Outgoing Inter-RAT Inter-Cell Handovers per Cell.
Table 11-74 Counters of Failed Outgoing Inter-RAT Inter-Cell Handovers per Cell
Number
Counter
1
H3520: Failed Outgoing Inter-RAT Inter-Cell Handovers (SDCCH) (Excluding
Directed Retry)
2
H3527: Failed Outgoing Inter-RAT Inter-Cell Handovers (TCHF)
3
H3528: Failed Outgoing Inter-RAT Inter-Cell Handovers (TCHH)
4
H352Da: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to
Old Channels) (Abnormal Release, Unspecified)
5
H352Db: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to
Old Channels) (Abnormal Release, Channel Unacceptable)
6
H352Dc: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to
Old Channels) (Abnormal Release, Timer Expired)
7
H352Dd: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to
Old Channels) (Abnormal Release, No Activity on the Radio Path)
8
H352De: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to
Old Channels) (Preemptive Release)
9
H352Df: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to
Old Channels) (Handover Failed, Timing Advance out of Range)
10
H352Dg: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to
Old Channels) (Channel Mode Unavailable)
11
H352Dh: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to
Old Channels) (Frequency Unavailable)
12
H352Di: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to
Old Channels) (Call Already Cleared)
13
H352Dj: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to
Old Channels) (Semantically Incorrect Message)
14
H352Dk: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to
Old Channels) (Invalid Mandatory Information)
15
H352Dl: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to
Old Channels) (Message Type Non-existent or Not Implemented)
16
H352Dm: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to
Old Channels) (Message Type Not Compatible with Protocol State)
17
H352Dn: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to
Old Channels) (Conditional IE Error)
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Number
Counter
18
H352Do: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to
Old Channels) (No Cell Allocation Available)
19
H352Dp: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to
Old Channels) (Protocol Error Unspecified)
20
H352Dq: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to
Old Channels) (Other Causes)
21
H352Ka: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request
Rejected) (OM Intervention)
22
H352Kb: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request
Rejected) (Equipment Failure)
23
H352Kc: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request
Rejected) (No Radio Resource Available)
24
H352Kd: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request
Rejected) (Requested Terrestrial Resource Unavailable)
25
H352Ke: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request
Rejected) (BSS not Equipped)
26
H352Kf: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request
Rejected) (Invalid Cell)
27
H352Kg: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request
Rejected) (Requested Transcoding/Rate Adaption Unavailable)
28
H352Kh: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request
Rejected) (Circuit Pool Mismatch)
29
H352Ki: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request
Rejected) (Requested Speech Version Unavailable)
30
H352Kj: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request
Rejected) (Ciphering Algorithm not Supported)
31
H352Kk: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request
Rejected) (Terrestrial circuit already allocated)
32
H352Kl: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request
Rejected) (Invalid Message)
33
H352Km: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover
Request Rejected) (Protocol Error between BSS and MSC)
34
H352Kn: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request
Rejected) (Other Causes)
35
H352Ha: Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands
Sent by MSC) (Radio Interface Message Failure)
36
H352Hb: Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands
Sent by MSC) (Radio Interface Failure)
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Number
Counter
37
H352Hc: Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands
Sent by MSC) (OM Intervention)
38
H352Hd: Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands
Sent by MSC) (Equipment Failure)
39
H352He: Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands
Sent by MSC) (Preemption)
40
H352Hf: Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands
Sent by MSC) (Invalid Message)
41
H352Hg: Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands
Sent by MSC) (Protocol Error between BSS and MSC)
42
H352Hh: Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands
Sent by MSC) (Other Causes)
43
H352G: Failed Outgoing Inter-RAT Inter-Cell Handovers (A-Interface Failure)
44
H352L: Failed Outgoing Inter-RAT Inter-Cell Handovers (T7 Expired)
45
H352C: Failed Outgoing Inter-RAT Inter-Cell Handovers (T8 Expired)
Meaning
This type of counters measures the number of failed outgoing inter-RAT inter-cell handovers
based on the channel type and failure cause. Here, the handover excludes directed retry.
Along with Outgoing Inter-RAT Inter-Cell Handover Requests per Cell and Outgoing InterRAT Inter-Cell Handover Commands per Cell, this type of counters can help you to better
understand the situation of outgoing inter-RAT inter-cell handovers.
Along with Incoming Inter-RAT Inter-Cell Handover Measurement per Cell, this type of
counters can help you to better understand the situation of all outgoing inter-RAT inter-cell
handovers.
The channel type may be SDCCH, TCHH, or TCHF. The directed retry procedure applies to
only traffic channels.
The failure cause may be one of the following:
z
Handover request rejected
z
Reconnected to the old channel, excluding directed retry
z
Command from the MSC cleared
z
The A interface failed
z
T7 or T8 timer expired
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11 Call Measurement
Trigger Point
The measurement is triggered at any of points A to H as shown in Figure 11-28 and Figure 1129.
Figure 11-28 Outgoing inter-RAT inter-cell handover procedure (excluding directed retry)
MSC1
MSC2
BSC2
BTS2
MS
MR FROM MS
HO RQD
PERFORM HO
Handover failed
HO RQD REJ
C
T7 expired
G
In the
outgoing
inter-RAT
inter-cell
handover
procedure
HO CMD
HO CMD
HO FAIL
D
A
E
T8 expired
F
SEND END SIG
H
CLR CMD
CLR CMP
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Figure 11-29 Outgoing inter-RAT inter-cell handover procedure (including directed retry)
MSC1
MSC2
BSC2
BTS2
MS
ASSIGN REQ
HO RQD
PERFORM HO
Handover failed
HO RQD REJ
C
T7 expired
In the
outgoing
inter-RAT
inter-cell
handover
procedure
B
G
HO CMD
HO CMD
T8 expired
SEND END SIG
E
F
H
CLR CMD
CLR CMP
A: Failed Outgoing Inter-RAT Inter-Cell Handovers (Excluding Directed Retry)
B: Failed Outgoing Inter-RAT Inter-Cell Handovers (Directed Retry)
C: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected)
E: Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands Sent by MSC)
F: Failed Outgoing Inter-RAT Inter-Cell Handovers (A-Interface Failure)
G: Failed Outgoing Inter-RAT Inter-Cell Handovers (T7 Expired)
H: Failed Outgoing Inter-RAT Inter-Cell Handovers (T8 Expired)
z
Failed Outgoing Inter-RAT Inter-Cell Handovers (Excluding Directed Retry)
As shown in Figure 11-28, the measurement is triggered when an outgoing inter-RAT
inter-cell handover (excluding directed retry) fails. The measurement is based on the
channel type.
The channel type may be SDCCH, TCHH, or TCHF.
z
Failed Outgoing Inter-RAT Inter-Cell Handovers (Directed Retry)
As shown in Figure 11-29, the measurement is triggered when an outgoing inter-RAT
inter-cell handover (including directed retry) fails. The measurement is based on the
channel type.
The channel type may be TCHH or TCHF.
z
Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected)
As shown in Figure 11-28 and Figure 11-29, the measurement is triggered when MSC 2
sends an HO RQD REJ message to BSC 2 during an outgoing inter-RAT inter-cell
handover (including directed retry). The measurement is based on the rejection cause.
The rejection causes are as follows:
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OM intervention
−
Equipment failure
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z
−
No radio resource available
−
Requested terrestrial resource unavailable
−
BSS not equipped
−
Invalid Cell
−
Requested transcoding/rate adaption unavailable
−
Circuit pool mismatch
−
Requested Speech version unavailable
−
Ciphering algorithm not supported
−
Terrestrial circuit already allocated
−
Invalid message
−
Protocol Error between BSS and MSC
−
Other causes
Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels)
As shown in Figure 11-28, the measurement is triggered when the MS sends an HO
FAIL message to BSC 2 through the source cell after failing to access the new system in
the target cell and returning to the old channel during an outgoing inter-RAT inter-cell
handover (excluding directed retry). The measurement is based on the RR cause.
The RR causes for handover failure are as follows:
z
−
Abnormal release, unspecified
−
Abnormal release, channel unacceptable
−
Abnormal release, timer expired
−
Abnormal release, no activity on the radio path
−
Preemptive release
−
Handover failed, timing advance out of range
−
Channel mode unavailable
−
Frequency unavailable
−
Call already cleared
−
Semantically incorrect message
−
Invalid mandatory information
−
Message type non-existent or not implemented
−
Message type not compatible with protocol state
−
Conditional IE error
−
No cell allocation available
−
Protocol error unspecified
−
Other causes
Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands Sent by MSC)
As shown in Figure 11-28 and Figure 11-29, the measurement is triggered when BSC 2
receives a CLR CMD message from MSC 2 during an outgoing inter-RAT inter-cell
handover (including directed retry). The measurement is based on the clearance cause.
The clearance causes are as follows:
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−
Equipment failure
−
Preemption
−
Invalid message
−
Protocol Error between BSS and MSC
−
Other causes
11 Call Measurement
Failed Outgoing Inter-RAT Inter-Cell Handovers (A-Interface Failure)
As shown in Figure 11-28 and Figure 11-29, the measurement is triggered when BSC 2
receives a message indicating that the A interface fails during an outgoing inter-RAT
inter-cell handover (including directed retry).
z
Failed Outgoing Inter-RAT Inter-Cell Handovers (T7 Expired)
As shown in Figure 11-28 and Figure 11-29, the measurement is triggered when BSC 2
does not receive an HO CMD message from MSC 2 before T7 expires during an
outgoing inter-RAT inter-cell handover (including directed retry).
z
Failed Outgoing Inter-RAT Inter-Cell Handovers (T8 Expired)
As shown in Figure 11-28 and Figure 11-29, the measurement is triggered when BSC 2
does not receive a CLR CMD message from MSC 2 before T8 expires during an
outgoing inter-RAT inter-cell handover (including directed retry).
Formula
None.
11.16.5 Outgoing Inter-RAT Inter-Cell Handover Analyzed
Measurement per Cell
Counter
Table 11-75 lists the counters of Outgoing Inter-RAT Inter-Cell Handover Analyzed
Measurement per Cell.
Table 11-75 Counters of Outgoing Inter-RAT Inter-Cell Handover Analyzed Measurement per
Cell
Number
Counter
1
CH350: Outgoing Inter-RAT Inter-Cell Handover Requests
2
CH353: Successful Outgoing Inter-RAT Inter-Cell Handovers
3
TH353: Success Rate of Outgoing Inter-RAT Inter-Cell Handover
4
CH351: Outgoing Inter-RAT Inter-Cell Handover Commands
5
CH352: Failed Outgoing Inter-RAT Inter-Cell Handovers
6
CH352D: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to
Old Channels)
7
CH352K: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover
Request Rejected)
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Number
Counter
8
CH352H: Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands
Sent by MSC)
Meaning
None.
Trigger Point
None.
Formula
Outgoing Inter-RAT Inter-Cell Handover Requests =
[Outgoing Inter-RAT Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry)] +
[Outgoing Inter-RAT Inter-Cell Handover Requests (TCHF)] +
[Outgoing Inter-RAT Inter-Cell Handover Requests (TCHH)]
Successful Outgoing Inter-RAT Inter-Cell Handovers =
[Outgoing Inter-RAT Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry)] +
[Outgoing Inter-RAT Inter-Cell Handover Requests (TCHF)] +
[Outgoing Inter-RAT Inter-Cell Handover Requests (TCHH)][Failed Outgoing Inter-RAT Inter-Cell Handovers (SDCCH) (Excluding Directed Retry)][Failed Outgoing Inter-RAT Inter-Cell Handovers (TCHF)][Failed Outgoing Inter-RAT Inter-Cell Handovers (TCHH)]
Success Rate of Outgoing Inter-RAT Inter-Cell Handover =
[Successful Outgoing Inter-RAT Inter-Cell Handovers]*{100}/[Outgoing Inter-RAT Inter-Cell
Handover Requests]
Outgoing Inter-RAT Inter-Cell Handover Commands =
[Outgoing Inter-RAT Inter-Cell Handover Commands (SDCCH) (Excluding Directed Retry)]
+
[Outgoing Inter-RAT Inter-Cell Handover Commands (TCHF)] +
[Outgoing Inter-RAT Inter-Cell Handover Commands (TCHH)]
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Failed Outgoing Inter-RAT Inter-Cell Handovers =
[Failed Outgoing Inter-RAT Inter-Cell Handovers (SDCCH) (Excluding Directed Retry)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (TCHF)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (TCHH)]
Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels)=
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Abnormal
Release, Unspecified)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Abnormal
Release, Channel Unacceptable)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Abnormal
Release, Timer Expired)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Abnormal
Release, No Activity on the Radio Path)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels)
(Preemptive Release)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Handover
Failed, Timing Advance out of Range)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Channel
Mode Unavailable)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels)
(Frequency Unavailable)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Call
Already Cleared)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels)
(Semantically Incorrect Message)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Invalid
Mandatory Information)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Message
Type Non-existent or Not Implemented)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Message
Type Not Compatible with Protocol State)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels)
(Conditional IE Error)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (No Cell
Allocation Available)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Protocol
Error Unspecified)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Other
Causes)]
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Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected)=
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected) (OM
Intervention)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected) (Equipment
Failure)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected) (No Radio
Resource Available)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected) (Requested
Terrestrial Resource Unavailable)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected) (BSS not
Equipped)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected) (Invalid Cell)]
+
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected) (Requested
Transcoding/Rate Adaption Unavailable)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected) (Circuit Pool
Mismatch)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected) (Requested
Speech Version Unavailable)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected) (Ciphering
Algorithm not Supported)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected) (Terrestrial
circuit already allocated)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected) (Invalid
Message)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected) (Protocol
Error between BSS and MSC)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected) (Other
Causes)]
Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands Sent by MSC)=
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands Sent by MSC) (Radio
Interface Message Failure)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands Sent by MSC) (Radio
Interface Failure)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands Sent by MSC) (OM
Intervention)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands Sent by MSC)
(Equipment Failure)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands Sent by MSC)
(Preemption)] +
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[Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands Sent by MSC) (Invalid
Message)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands Sent by MSC) (Protocol
Error between BSS and MSC)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands Sent by MSC) (Other
Causes)]
11.17 GSM Cell to GSM Cell Incoming Handover
Measurement
11.17.1 Overview
GSM Cell to GSM Cell Incoming Handover refers to a handover in which the MS is handed
over to the target cell from the source cell.
GSM Cell to GSM Cell Incoming Handover Measurement aims to measure the following two
types of handover:
z
After receiving a measurement report from the MS, the BSC decides to perform a
handover based on the interference of the current channel, the load of the cell, and the
measurement report, which indicates the signal quality, strength, and TX/RX level.
z
After receiving an ASSIGN REQ message from the MSC, the BSC decides the
assignment mode based on the load of the cell. There are three assignment procedures:
normal assignment procedure, directed retry procedure, and assignment modification
procedure. If the load of the cell is so high that the cell cannot admit a new service or
that a new service will affect current services, the BSC decides to perform a handover
through directed retry.
The incoming handover procedure is as follows:
Step 1 The main processing module of the BSC receives an intra-BSC handover triggering indication
from the handover algorithm, an inter-BSC HO REQ message from the MSC, or a request for
handover during directed retry.
Step 2 The BSC sends an inter-BSC HO REQ message to the target cell through the MSC or directly
requests channel resources from the target cell controlled by the same BSC for channel
resources.
Step 3 The BSC sends an HO CMD message to the MS through the source cell after the request
succeeds.
Step 4 The MS accesses the network through the target cell by receiving/sending messages such as
HO ACC, PHY INFO, FIRST SABM, and UA.
Step 5 The MS sends an HO CMP message to the BSC through the target cell and releases the
resources of the source cell.
----End
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Table 11-76 lists the counter types of GSM Cell to GSM Cell Incoming Handover
Measurement.
Table 11-76 Counter types of CGSM Cell to GSM Cell Incoming Handover Measurement
Counter Type
Section
Cell Incoming Handover Requests (Cell to Cell)
11.17.2
Failed Cell Incoming Handovers (Cell to Cell)
11.17.3
Cell Incoming Handover Analyzed Measurement (Cell to Cell)
11.17.4
11.17.2 Cell Incoming Handover Requests (Cell to Cell)
Counter
H380: Cell Incoming Handover Requests
Meaning
This counter measures the number of Cell Incoming Handover Requests.
Along with Failed Cell Incoming Handovers (Cell to Cell), this counter can help you to better
understand the situation of inter-cell incoming handovers.
Along with GSM Cell to GSM Cell Outgoing Handover Measurement, this counter can help
you to better understand the situation of inter-cell handovers.
Trigger Point
The measurement is triggered when an incoming handover occurs between different cells.
Formula
None.
11.17.3 Failed Cell Incoming Handovers (Cell to Cell)
Counter
Table 11-77 lists the counter of Failed Cell Incoming Handovers (Cell to Cell).
Table 11-77 Counter of Failed Cell Incoming Handovers (Cell to Cell)
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Number
Counter
1
H382A: Failed Cell Incoming Handovers (Congestion)
2
H382M: Failed Cell Incoming Handovers (Other Causes)
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Meaning
This type of counters measures the number of inter-cell incoming handover failures based on
the failure cause.
Along with Cell Incoming Handover Requests (Cell to Cell), this counter can help you to
better understand the situation of inter-cell incoming handovers.
Along with GSM Cell to GSM Cell Outgoing Handover Measurement, this counter can help
you to better understand the situation of inter-cell handovers.
The failure cause may be congestion or others.
The counter H382M: Failed Cell Incoming Handovers (Other Causes) also includes directed retry
(handover cause).
Trigger Point
The measurement is triggered when an inter-cell incoming handover fails. The measurement
is based on the failure cause.
Formula
None.
11.17.4 Cell Incoming Handover Analyzed Measurement (Cell to
Cell)
Counter
Table 11-78 lists the counters of Cell Incoming Handover Analyzed Measurement (Cell to
Cell).
Table 11-78 Counters of Cell Incoming Handover Analyzed Measurement (Cell to Cell)
Number
Counter
1
RH383: Success Rate of Cell Incoming Handovers
2
H382: Failed Cell Incoming Handovers
3
H383: Successful Cell Incoming Handovers
Meaning
None.
Trigger Point
None.
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Formula
Success Rate of Cell Incoming Handovers =
[Successful Cell Incoming Handovers]*{100}/[Cell Incoming Handover Requests]
Failed Cell Incoming Handovers =
[Failed Cell Incoming Handovers (Congestion)] +
[Failed Cell Incoming Handovers (Other Causes)]
Successful Cell Incoming Handovers =
[Cell Incoming Handover Requests]-[Failed Cell Incoming Handovers]
11.18 GSM Cell to GSM Cell Outgoing Handover
Measurement
11.18.1 Overview
GSM Cell to GSM Cell Outgoing Handover refers to a handover in which the MS is handed
over from the source cell to the target cell.
GSM Cell to GSM Cell Outgoing Handover Measurement aims to measure the following two
types of handover:
z
After receiving a measurement report from the MS, the BSC decides to perform a
handover based on the interference of the current channel, the load of the cell, and the
measurement report, which indicates the signal quality, strength, and TX/RX level.
z
After receiving an ASSIGN REQ message from the MSC, the BSC decides the
assignment mode based on the load of the cell. There are three assignment procedures:
normal assignment procedure, directed retry procedure, and assignment modification
procedure. If the load of the cell is so high that the cell cannot admit a new service or
that a new service will affect current services, the BSC decides to perform a handover
through directed retry.
The outgoing handover procedure is as follows:
Step 1 The main processing module of the BSC receives an intra-BSC handover triggering indication
from the handover algorithm, an inter-BSC HO REQ message from the MSC, or a request for
handover during directed retry.
Step 2 The BSC sends an inter-BSC HO REQ message to the target cell through the MSC or directly
requests channel resources from the target cell controlled by the same BSC for channel
resources.
Step 3 The target cell responds to the HO REQ message after the request and preparation succeed.
Step 4 The BSC sends an HO CMD message to the MS through the source cell.
Step 5 The MS accesses the network through the target cell by receiving/sending messages such as
HO ACC, PHY INFO, FIRST SABM, and UA.
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Step 6 The MS sends an HO CMP message to the BSC through the target cell and releases the
resources of the source cell.
----End
Table 11-79 lists the counter types of GSM Cell to GSM Cell Outgoing Handover.
Table 11-79 Counter types of GSM Cell to GSM Cell Outgoing Handover
Counter Type
Section
Cell Outgoing Handover Commands (Cell to Cell)
11.18.2
Failed Cell Outgoing Handovers (Cell to Cell)
11.18.3
Cell Outgoing Handover Analyzed Measurement (Cell to Cell)
11.18.4
11.18.2 Cell Outgoing Handover Commands (Cell to Cell)
Counter
Table 11-80 lists the counters of Cell Outgoing Handover Commands (Cell to Cell).
Table 11-80 Counters of Cell Outgoing Handover Commands (Cell to Cell)
Number
Counter
1
H371A: Cell Outgoing Handover Commands (Uplink Quality)
2
H371B: Cell Outgoing Handover Commands (Downlink Quality)
3
H371C: Cell Outgoing Handover Commands (Uplink Strength)
4
H371D: Cell Outgoing Handover Commands (Downlink Strength)
5
H371E: Cell Outgoing Handover Commands (Timing Advance)
6
H371F: Cell Outgoing Handover Commands (Better Cell)
7
H371G: Cell Outgoing Handover Commands (Load)
8
H371H: Cell Outgoing Handover Commands (Rapid Level Drop)
9
H371I: Cell Outgoing Handover Commands (MSC Intervention)
10
H371J: Cell Outgoing Handover Commands (OM Intervention)
11
H371L: Cell Outgoing Handover Commands (Other Causes)
Meaning
This counter measures the number of Cell Outgoing Handover Commands.
Along with Failed Cell Outgoing Handovers (Cell to Cell), this counter can help you to better
understand the situation of outgoing handovers between different cells.
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Along with GSM Cell to GSM Cell Incoming Handover Measurement, this counter can help
you to better understand the situation of inter-cell handovers.
The triggering conditions of inter-cell outgoing handover are as follows:
z
Uplink Quality
z
Downlink Quality
z
Uplink Strength
z
Downlink Strength
z
Timing Advance
z
Better Cell
z
Cell Load
z
Rapid Level Drop
z
MSC Intervention
z
OM Intervention
z
EDGE coverage
z
Other Causes
The counter H371L: Cell Outgoing Handover Commands (Other Causes) also includes directed retry
(handover cause).
Trigger Point
The measurement is triggered when an outgoing handover occurs between different cells.
Formula
None.
11.18.3 Failed Cell Outgoing Handovers (Cell to Cell)
Counter
Table 11-81 lists the counters of Failed Cell Outgoing Handovers (Cell to Cell).
Table 11-81 Counters of Failed Cell Outgoing Handovers (Cell to Cell)
11-198
Number
Counter
1
H372A: Failed Cell Outgoing Handovers (Uplink Quality)
2
H372B: Failed Cell Outgoing Handovers (Downlink Quality)
3
H372C: Failed Cell Outgoing Handovers (Uplink Strength)
4
H372D: Failed Cell Outgoing Handovers (Downlink Strength)
5
H372E: Failed Cell Outgoing Handovers (Timing Advance)
6
H372F: Failed Cell Outgoing Handovers (Better Cell)
7
H372G: Failed Cell Outgoing Handovers (Load)
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Number
Counter
8
H372H: Failed Cell Outgoing Handovers (Rapid Level Drop)
9
H372I: Failed Cell Outgoing Handovers (MSC Intervention)
10
H372J: Failed Cell Outgoing Handovers (OM Intervention)
11
H372L: Failed Cell Outgoing Handovers (Other Causes)
Meaning
This type of counters measures the number of inter-cell outgoing handover failures based on
the triggering cause.
Along with Cell Outgoing Handover Commands (Cell to Cell), this counter can help you to
better understand the situation of outgoing handovers between different cells.
Along with GSM Cell to GSM Cell Incoming Handover Measurement, this counter can help
you to better understand the situation of inter-cell handovers.
The triggering conditions of inter-cell outgoing handover are as follows:
z
Uplink Quality
z
Downlink Quality
z
Uplink Strength
z
Downlink Strength
z
Timing Advance
z
Better Cell
z
Cell Load
z
Rapid Level Drop
z
MSC Intervention
z
OM Intervention
z
EDGE coverage
z
Other Causes
The counter H372L: Failed Cell Outgoing Handovers (Other Causes) also includes directed retry
(handover cause).
Trigger Point
The measurement is triggered when an outgoing handover occurs between different cells.
Formula
None.
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11.18.4 Cell Outgoing Handover Analyzed Measurement (Cell to
Cell)
Counter
Table 11-82 lists the counters of Cell Outgoing Handover Analyzed Measurement (Cell to
Cell).
Table 11-82 Counters of Cell Outgoing Handover Analyzed Measurement
Number
Counter
1
RH373: Success Rate of Cell Outgoing Handovers
2
H371: Cell Outgoing Handover Commands
3
H372: Failed Cell Outgoing Handovers
4
H373: Successful Cell Outgoing Handovers
Meaning
None.
Trigger Point
None.
Formula
Success Rate of Cell Outgoing Handovers =
[Successful Cell Outgoing Handovers]*{100}/[Cell Outgoing Handover Commands]
Cell Outgoing Handover Commands =
[Cell Outgoing Handover Commands (Uplink Quality)] +
[Cell Outgoing Handover Commands (Downlink Quality)] +
[Cell Outgoing Handover Commands (Uplink Strength)] +
[Cell Outgoing Handover Commands (Downlink Strength)] +
[Cell Outgoing Handover Commands (Timing Advance)] +
[Cell Outgoing Handover Commands (Better Cell)] +
[Cell Outgoing Handover Commands (Load)] +
[Cell Outgoing Handover Commands (Rapid Level Drop)] +
[Cell Outgoing Handover Commands (MSC Intervention)] +
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[Cell Outgoing Handover Commands (OM Intervention)] +
[Cell Outgoing Handover Commands (Other Causes)]
Failed Cell Outgoing Handovers =
[Failed Cell Outgoing Handovers (Uplink Quality)] +
[Failed Cell Outgoing Handovers (Downlink Quality)] +
[Failed Cell Outgoing Handovers (Uplink Strength)] +
[Failed Cell Outgoing Handovers (Downlink Strength)] +
[Failed Cell Outgoing Handovers (Timing Advance)] +
[Failed Cell Outgoing Handovers (Better Cell)] +
[Failed Cell Outgoing Handovers (Load)] +
[Failed Cell Outgoing Handovers (Rapid Level Drop)] +
[Failed Cell Outgoing Handovers (MSC Intervention)] +
[Failed Cell Outgoing Handovers (OM Intervention)] +
[Failed Cell Outgoing Handovers (Other Causes)]
Successful Cell Outgoing Handovers =
[Cell Outgoing Handover Commands]-[Failed Cell Outgoing Handovers]
11.19 Measurement of MRs upon Handover Initiation per
Cell
11.19.1 Overview
Measurement of MRs upon Handover Initiation per Cell is used to measure the receiving level,
receiving quality, and timing advance (TA) status reported in handover.
Table 11-83 lists the counter types of Measurement of MRs upon Handover Initiation per Cell.
Table 11-83 Counter types of Measurement of MRs upon Handover Initiation per Cell
Counter Type
Section
Measurement of MRs upon Handover Initiation (Receiving Quality)
per Cell
11.19.2
Mean Uplink Receiving Level during Handover Initiation per Cell
11.19.3
Mean Uplink Receiving Quality during Handover Initiation per Cell
11.19.4
Concentric Cell Handover Initiation MR Analyzed Measurement
(Receiving Level) per Cell
11.19.5
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Counter Type
Section
Concentric Cell Handover Initiation MR Analyzed Measurement
(Timing Advance) per Cell
11.19.6
11.19.2 Measurement of MRs upon Handover Initiation
(Receiving Quality) per Cell
Counter
Table 11-84 lists the counters of Measurement of MRs upon Handover Initiation (Receiving
Quality) per Cell.
Table 11-84 Counters of Measurement of MRs upon Handover Initiation (Receiving Quality) per
Cell
11-202
Number
Counter
1
S3300C: Number of MRs during Handover Initiation (Uplink Receiving Level
Rank = 0)
2
S3301C: Number of MRs during Handover Initiation (Uplink Receiving Level
Rank = 1)
3
S3302C: Number of MRs during Handover Initiation (Uplink Receiving Level
Rank = 2)
4
S3303C: Number of MRs during Handover Initiation (Uplink Receiving Level
Rank = 3)
5
S3304C: Number of MRs during Handover Initiation (Uplink Receiving Level
Rank = 4)
6
S3305C: Number of MRs during Handover Initiation (Uplink Receiving Level
Rank = 5)
7
S3306C: Number of MRs during Handover Initiation (Uplink Receiving Level
Rank = 6)
8
S3307C: Number of MRs during Handover Initiation (Uplink Receiving Level
Rank = 7)
9
S3310C: Number of MRs during Handover Initiation (Uplink Receiving
Quality Rank = 0)
10
S3311C: Number of MRs during Handover Initiation (Uplink Receiving
Quality Rank = 1)
11
S3312C: Number of MRs during Handover Initiation (Uplink Receiving
Quality Rank = 2)
12
S3313C: Number of MRs during Handover Initiation (Uplink Receiving
Quality Rank = 3)
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Number
Counter
13
S3314C: Number of MRs during Handover Initiation (Uplink Receiving
Quality Rank = 4)
14
S3315C: Number of MRs during Handover Initiation (Uplink Receiving
Quality Rank = 5)
15
S3316C: Number of MRs during Handover Initiation (Uplink Receiving
Quality Rank = 6)
16
S3317C: Number of MRs during Handover Initiation (Uplink Receiving
Quality Rank = 7)
Meaning
After receiving a valid measurement report from an MS or a valid preprocessing measurement
report from a BTS, the BSC decides whether to initiate a handover after a decision. If
deciding to initiate a handover, the BSC triggers the counters based on the receiving level (1–
7) and the receiving quality (1–7).
Trigger Point
The measurement is triggered when the BSC decides to initiate a handover based on a valid
measurement report from an MS or a valid preprocessing measurement report from a BTS.
Formula
None.
11.19.3 Mean Uplink Receiving Level during Handover Initiation
per Cell
Counter
AS330C: Mean Uplink Receiving Level during Handover Initiation
Meaning
After receiving a valid measurement report from an MS or a valid preprocessing measurement
report from a BTS, the BSC sums up the uplink receiving level based on the measurement
report if deciding to initiate a handover. At the end of the measurement period, the BSC
divides the sum by the number of handover initiations to obtain the Mean Uplink Receiving
Level during Handover Initiation.
Trigger Point
None.
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Formula
Mean Uplink Receiving Level during Handover Initiation =
Uplink Receiving Level during Handover Initiation/
(Outgoing External Inter-Cell Handover Requests+
Outgoing Internal Inter-Cell Handover Requests+
Internal Intra-Cell Handover Requests (SDCCH) +
Internal Intra-Cell Handover Requests (TCH))
11.19.4 Mean Uplink Receiving Quality during Handover
Initiation per Cell
Counter
AS331C: Mean Uplink Receiving Quality during Handover Initiation
Meaning
After receiving a valid measurement report from an MS or a valid preprocessing measurement
report from a BTS, the BSC sums up the uplink receiving quality based on the measurement
report if deciding to initiate a handover. At the end of the measurement period, the BSC
divides the sum by the number of handover initiations to obtain the Mean Uplink Receiving
Quality during Handover Initiation.
Trigger Point
None.
Formula
Mean Uplink Receiving Quality during Handover Initiation =
Uplink Receiving Quality during Handover Initiation/
(Outgoing External Inter-Cell Handover Requests+
Inter-BSC Cell Outgoing Handover Requests +
Internal Intra-Cell Handover Requests (SDCCH) +
Internal Intra-Cell Handover Requests (TCH))
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11.19.5 Concentric Cell Handover Initiation MR Analyzed
Measurement (Receiving Level) per Cell
Counter
Table 11-85 lists the counters of Concentric Cell Handover Initiation MR Analyzed
Measurement (Receiving Level) per Cell.
Table 11-85 Counters of Concentric Cell Handover Initiation MR Analyzed Measurement
(Receiving Level) per Cell
Number
Counter
1
AS330A: Mean Uplink Receiving Level during Concentric Cell Handover
Initiation (Overlay to Underlay)
2
AS332A: Mean Downlink Receiving Level during Concentric Cell Handover
Initiation (Overlay to Underlay)
3
AS330B: Mean Uplink Receiving Level during Concentric Cell Handover
Initiation (Underlay to Overlay)
4
AS332B: Mean Downlink Receiving Level during Concentric Cell Handover
Initiation (Underlay to Overlay)
Meaning
After receiving a valid measurement report from an MS or a valid preprocessing measurement
report from a BTS, the BSC adds the reported uplink receiving level to the counter Uplink
Receiving Level during Concentric Cell Handover Initiation (Overlay to Underlay) if deciding
to initiate an overlay-to-underlay handover. In this case, the BSC also adds the downlink
receiving level to the counter Downlink Receiving Level during Concentric Cell Handover
Initiation (Overlay to Underlay).
At the end of the measurement report, the BSC respectively divides the two sums by the
number of Internal Intra-Cell Handover Requests (Overlay to Underlay) to obtain the Mean
Uplink Receiving Level during Concentric Cell Handover Initiation (Overlay to Underlay)
and the Mean Downlink Receiving Level during Concentric Cell Handover Initiation
(Overlay to Underlay).
After receiving a valid measurement report from an MS or a valid preprocessing measurement
report from a BTS, the BSC adds the reported uplink receiving level to the counter Uplink
Receiving Level during Concentric Cell Handover Initiation (Underlay to Overlay) if deciding
to initiate an underlay-to-overlay handover. In this case, the BSC also adds the downlink
receiving level to the counter Downlink Receiving Level during Concentric Cell Handover
Initiation (Underlay to Overlay).
At the end of the measurement report, the BSC respectively divides the two sums by the
number of Internal Intra-Cell Handover Requests (Underlay to Overlay) to obtain the Mean
Uplink Receiving Level during Concentric Cell Handover Initiation (Underlay to Overlay)
and the Mean Downlink Receiving Level during Concentric Cell Handover Initiation
(Underlay to Overlay).
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Trigger Point
None.
Formula
Mean Uplink Receiving Level during Concentric Cell Handover Initiation (Overlay to
Underlay)=
Uplink Receiving Level during Concentric Cell Handover Initiation (Overlay to
Underlay)/Internal Intra-Cell Handover Requests (Overlay to Underlay)
Mean Downlink Receiving Level during Concentric Cell Handover Initiation (Overlay to
Underlay)=
Downlink Receiving Level during Concentric Cell Handover Initiation (Overlay to
Underlay)/Internal Intra-Cell Handover Requests (Overlay to Underlay)
Mean Uplink Receiving Level during Concentric Cell Handover Initiation (Underlay to
Overlay)=
Uplink Receiving Level during Concentric Cell Handover Initiation (Underlay to
Overlay)/Internal Intra-Cell Handover Requests (Underlay to Overlay)
Mean Downlink Receiving Level during Concentric Cell Handover Initiation (Underlay to
Overlay)=
Downlink Receiving Level during Concentric Cell Handover Initiation (Underlay to
Overlay)/Internal Intra-Cell Handover Requests (Underlay to Overlay)
11.19.6 Concentric Cell Handover Initiation MR Analyzed
Measurement (Timing Advance) per Cell
Counter
Table 11-86 lists the counter of Concentric Cell Handover Initiation MR Analyzed
Measurement (Timing Advance) per Cell.
Table 11-86 Counters of Concentric Cell Handover Initiation MR Analyzed Measurement
(Timing Advance) per Cell
Number
Counter
1
AS334A: Mean Timing Advance during Concentric Cell Handover Initiation
(Overlay to Underlay)
2
AS334B: Mean Timing Advance during Concentric Cell Handover Initiation
(Underlay to Overlay)
Meaning
After receiving a valid measurement report from an MS or a valid preprocessing measurement
report from a BTS, the BSC adds the reported TA to the counter Timing Advance Level
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during Concentric Cell Handover Initiation (Overlay to Underlay) if deciding to initiate an
overlay-to-underlay handover.
At the end of the measurement period, the BSC divides the sum by the number of Internal
Intra-Cell Handover Requests (Overlay to Underlay) to obtain the Mean Timing Advance
during Concentric Cell Handover Initiation (Overlay to Underlay).
After receiving a valid measurement report from an MS or a valid preprocessing measurement
report from a BTS, the BSC adds the reported TA to the counter Timing Advance Level
during Concentric Cell Handover Initiation (Underlay to Overlay) if deciding to initiate an
underlay-to-overlay handover.
At the end of the measurement period, the BSC divides the sum by the number of Internal
Intra-Cell Handover Requests (Underlay to Overlay) to obtain the Mean Timing Advance
during Concentric Cell Handover Initiation (Underlay to Overlay).
Trigger Point
None.
Formula
Mean Timing Advance during Concentric Cell Handover Initiation (Overlay to Underlay)
= Timing Advance during Concentric Cell Handover Initiation (Overlay to Underlay)/Internal
Intra-Cell Handover Requests (Overlay to Underlay)
Mean Timing Advance during Concentric Cell Handover Initiation (Underlay to Overlay)
= Timing Advance during Concentric Cell Handover Initiation (Underlay to Overlay)/Internal
Intra-Cell Handover Requests (Underlay to Overlay)
11.20 KPI Measurement per Cell
11.20.1 Overview
Table 11-87 lists the counters of KPI Measurement per Cell.
Table 11-87 Counters of KPI Measurement per Cell
Number
Counter
1
K3100: Immediate Assignment Requests
2
K3101: Immediate Assignment Commands
3
K3000: SDCCH Seizure Requests
4
K3001: Failed SDCCH Seizures due to Busy SDCCH
5
K3003: Successful SDCCH Seizures
6
K3004: Traffic Volume on SDCCH
7
K3005: Available SDCCHs
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Number
Counter
8
K3006: Configured SDCCHs
9
K3020: TCH Seizure Requests (Signaling Channel)
10
K3021: Failed TCH Seizures due to Busy TCH (Signaling Channel)
11
K3023: Successful TCH Seizures (Signaling Channel)
12
K3022: Call Drops on TCH (Signaling Channel)
13
K3024: Traffic Volume on TCH (Signaling Channel)
14
K3010A: TCH Seizure Requests (Traffic Channel)
15
K3011A: Failed TCH Seizures due to Busy TCH (Traffic Channel)
16
K3013A: Successful TCH Seizures (Traffic Channel)
17
K3012A: Call Drops on TCH in Stable State (Traffic Channel)
18
K3010B: TCH Seizure Requests in TCH Handovers (Traffic Channel)
19
K3011B: Failed TCH Seizures in TCH Handovers due to Busy TCH
(Traffic Channel)
20
K3013B: Successful TCH Seizures in TCH handovers (Traffic Channel)
21
K3012B: Call Drops in TCH Handovers (Traffic Channel)
22
K3014: Traffic Volume on TCH (Traffic Channel)
23
K3015: Available TCHs
24
K3016: Configured TCHs
25
K3170: Dual-Band Handover Requests
26
K3173: Successful Dual-Band Handovers
11.20.2 Immediate Assignment Requests
Counter
K3100: Immediate Assignment Requests
Meaning
To obtain the service from the network, an MS sends a CHAN REQ message. After receiving
this message, the BTS sends a CHAN RQD message to the BSC for a dedicated channel. This
counter applies to the channel accesses due to all causes but packet services.
Trigger Point
None.
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Formula
Immediate Assignment Requests =
[Channel Requests (Circuit Service)]
11.20.3 Immediate Assignment Commands
Counter
K3101: Immediate Assignment Commands
Meaning
In an immediate assignment procedure, the MS reports a CHAN REQ message to the BTS.
The BTS sends a CHAN RQD message to the BSC. The BSC allocates a signaling channel
for the MS and activates the channel. If the BSC receives a CHAN ACTIV ACK message
from the BTS, it is an indication that the BTS already prepares the channel. The BSC sends an
IMM ASSIGN CMD message to the MS, instructing the MS to access the specified signaling
channel. This channel may be an SDCCH or TCH. This counter applies to the channel
accesses due to all causes but packet services.
Trigger Point
None.
Formula
Immediate Assignment Commands =
[Immediate Assignment Commands (Circuit Service)]
11.20.4 SDCCH Seizure Requests
Counter
K3000: SDCCH Seizure Requests
Meaning
In an immediate assignment procedure, the MS requests a channel from the BSS. In an interBSC incoming handover procedure, the MSC requests the BSS to allocate a channel for the
MS. In an intra-BSC incoming handover procedure, the BSC requests a channel from the BSS.
In the procedures mentioned previously, the BSC triggers the counter after receiving a request
for SDCCH.
Trigger Point
None.
Formula
SDCCH Seizure Requests =
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[Channel Assignment Requests in Immediate Assignment Procedure (SDCCH)] +
[Internal Intra-Cell Handover Requests (SDCCH)] +
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (900/850-900/850)] +
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (1800/1900-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (900/850-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (1800/1900-900/850)] +
[Incoming External Inter-Cell Handover Requests (SDCCH) (900/850-900/850)] +
[Incoming External Inter-Cell Handover Requests (SDCCH) (1800/1900-1800/1900)] +
[Incoming External Inter-Cell Handover Requests (SDCCH) (900/850-1800/1900)] +
[Incoming External Inter-Cell Handover Requests (SDCCH) (1800/1900-900/850)]
11.20.5 Failed SDCCH Seizures due to Busy SDCCH
Counter
K3001: Failed SDCCH Seizures due to Busy SDCCH
Meaning
In an immediate assignment procedure or a handover procedure, the BSC triggers the counter
when the MS or MSC requests an SDCCH from the BSS but no SDCCH is available.
Trigger Point
None.
Formula
Failed SDCCH Seizures due to Busy SDCCH =
[Failed Channel Assignments due to Busy or Not Configured Channels in Immediate
Assignment Procedure (SDCCH)] +
[Failed Internal Intra-Cell Handovers (Channel Unavailable) (SDCCH)] +
[Failed Incoming Internal Inter-Cell Handovers (Channel Unavailable) (SDCCH)] +
[Failed Incoming External Inter-Cell Handovers (Channel Unavailable) (SDCCH)]
11.20.6 Successful SDCCH Seizures
Counter
K3003: Successful SDCCH Seizures
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Meaning
In an SDCCH immediate assignment procedure, the BTS sends a channel activation success
message to the BSC. After receiving this message, the BSC regards that the assignment of
SDCCH succeeds. In an SDCCH handover procedure, the BTS sends a handover detection
message to the target cell. After receiving this message, the BSC regards that the assignment
of SDCCH succeeds.
This counter applies to the previous two cases.
Trigger Point
None.
Formula
Successful SDCCH Seizures=
[Channel Activation Attempts in Immediate Assignment Procedure (SDCCH)][CHAN ACTIV NACK Messages Sent by BTS in Immediate Assignment Procedure
(SDCCH)][Channel Activation Timeouts in Immediate Assignment Procedure (SDCCH)] +
[Internal Intra-Cell Handover Detection Messages Received by BSC (SDCCH)] +
[Incoming Internal Inter-Cell Handover Detection Messages Received by BSC (SDCCH)] +
[Incoming External Inter-Cell Handover Detection Messages Received by BSC (SDCCH)]
11.20.7 Traffic Volume on SDCCH
Counter
K3004: Traffic Volume on SDCCH
Meaning
This counter measures the ratio of the duration for which the MS occupies the SDCCH to the
measurement period. The duration for which the MS occupies the SDCCH is equal to the
number of reports from the MS on the SDCCH multiplied by the reporting period 0.47s.
Trigger Point
None.
Formula
Traffic Volume on SDCCH =
[Traffic Volume on Signaling Channel (SDCCH)]
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11.20.8 Traffic Volume on SDCCH
Counter
K3004: Traffic Volume on SDCCH
Meaning
The unit of this counter is Erlang.
Trigger Point
None.
Formula
Traffic Volume on SDCCH =
[Traffic Volume on Signaling Channel (SDCCH)]
11.20.9 Available SDCCHs
Counter
K3005: Available SDCCHs
Meaning
This counter measures the number of SDCCHs in idle or busy state in a cell of the BSC. Here,
the SDCCHs include those obtained dynamically from TCHs. This counter is equal to the
total number of available SDCCHs divided by the number of sample points.
Trigger Point
None.
Formula
Available SDCCHs =
[Mean Number of Available Channels (SDCCH)]
11.20.10 Configured SDCCHs
Counter
K3006: Configured SDCCHs
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Meaning
This counter measures the number of SDCCH configured for a cell of the BSC. Here, the
SDCCHs include those obtained dynamically from TCHs. This counter measures the mean
number of configured SDCCHs.
Trigger Point
None.
Formula
Configured SDCCHs =
[Mean Number of Configured Channels (SDCCH)]
11.20.11 TCH Seizure Requests (Signaling Channel)
Counter
K3021: TCH Seizure Requests (Signaling Channel)
Meaning
This counter measures the number of the CHAN RQD messages sent from the BTS to the
BSC in an immediate TCH assignment procedure.
Trigger Point
None.
Formula
TCH Seizure Requests (Signaling Channel) =
[Channel Assignment Requests in Immediate Assignment Procedure (TCH)]
11.20.12 Failed TCH Seizures due to Busy TCH (Signaling
Channel)
Counter
K3021: Failed TCH Seizures due to Busy TCH (Signaling Channel)
Meaning
This counter measures the times the BSC has no TCH (signaling channel) to allocate in an
immediate TCH assignment procedure.
Trigger Point
None.
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Formula
Failed TCH Seizures due to Busy TCH (Signaling Channel) =
[Channel Assignment Requests in Immediate Assignment Procedure (TCH)][Immediate Assignment Commands (TCHF)][Immediate Assignment Commands (TCHH)]
11.20.13 Successful TCH Seizures (Signaling Channel)
Counter
K3023: Successful TCH Seizures (Signaling Channel)
Meaning
This counter measures the number of successful activations of the TCHs (signaling channels)
allocated by the BSC in an immediate TCH assignment procedure.
Trigger Point
None.
Formula
Successful TCH Seizures (Signaling Channel) =
([Channel Activation Attempts in Immediate Assignment Procedure (TCHF)] +
[Channel Activation Attempts in Immediate Assignment Procedure (TCHH)])([CHAN ACTIV NACK Messages Sent by BTS in Immediate Assignment Procedure (TCHF)]
+
[CHAN ACTIV NACK Messages Sent by BTS in Immediate Assignment Procedure (TCHH)]
+
[Channel Activation Timeouts in Immediate Assignment Procedure (TCHF)] +
[Channel Activation Timeouts in Immediate Assignment Procedure (TCHH)])
11.20.14 Call Drops on TCH (Signaling Channel)
Counter
K3022: Call Drops on TCH (Signaling Channel)
Meaning
This counter measures the number of call drops occurred although the MS sets up on the TCH
a normal connection with the service type of signaling.
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Trigger Point
None.
Formula
Call Drops on TCH (Signaling Channel) =
[Call Drops on Signaling Channel][Call Drops on SDCCH]
11.20.15 Traffic Volume on TCH (Signaling Channel)
Counter
K3024: Traffic Volume on TCH (Signaling Channel)
Meaning
This counter measures the ratio of the duration for which the MS occupies the TCH (signaling
channel) to the measurement period. The duration for which the MS occupies the TCH is
equal to the number of reports from the MS on the TCH multiplied by the reporting period
0.48s.
Trigger Point
None.
Formula
Traffic Volume on TCH (Signaling Channel) =
[Traffic Volume on Signaling Channel (TCH)]
11.20.16 TCH Seizure Requests (Traffic Channel)
Counter
K3010A: TCH Seizure Requests (Traffic Channel)
Meaning
This counter measures the number of TCH (traffic channel) seizure requests received by the
BSC from the MSC.
Trigger Point
None.
Formula
TCH Seizure Requests (Traffic Channel) =
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[Assignment Requests]
11.20.17 Failed TCH Seizures due to Busy TCH (Traffic Channel)
Counter
K3011A: Failed TCH Seizures due to Busy TCH (Traffic Channel)
Meaning
This counter measures the number of failed TCH (traffic channel) seizures due to no TCH
available.
Trigger Point
None.
Formula
Failed TCH Seizures due to Busy TCH (Traffic Channel) =
[Failed Assignments (Channel Unavailable)]
11.20.18 Successful TCH Seizures (Traffic Channel)
Counter
K3013A: Successful TCH Seizures (Traffic Channel)
Meaning
This counter measures the number of successful TCH (traffic channel) seizures by the MS.
Trigger Point
None.
Formula
Successful TCH Seizures (Traffic Channel) =
[Successful Assignments]
11.20.19 Call Drops on TCH in Stable State (Traffic Channel)
Counter
K3012A: Call Drops on TCH in Stable State (Traffic Channel)
Meaning
This counter measures the number of call drops occurred after the MS is in the stable
communication state on the TCH (traffic channel).
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Trigger Point
None.
Formula
Call Drops on TCH in Stable State (Traffic Channel) =
[Call Drops on Radio Interface in Stable State (TCH)] +
[Call Drops due to No MRs from MS for a Long Time (TCH)] +
[Call Drops due to Abis Terrestrial Link Failure (TCH)] +
[Call Drops due to Equipment Failure (TCH)] +
[Call Drops due to Forced Handover (TCH)]
11.20.20 TCH Seizure Requests in TCH Handovers (Traffic
Channel)
Counter
K3010B: TCH Seizure Requests in TCH Handovers (Traffic Channel)
Meaning
In an intra-BSC incoming handover procedure, the MS requests the BSS to reallocate a TCH
(traffic channel). In an inter-BSC incoming handover procedure, the MSC requests the BSS to
reallocate a TCH (traffic channel).
This counter measures the total number of TCH seizure requests in the procedures mentioned
previously.
Trigger Point
None.
Formula
TCH Seizure Requests in TCH Handovers (Traffic Channel) =
[Internal Intra-Cell Handover Requests (TCH)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (900/850-900/850)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (1800/1900-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (900/850-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (1800/1900-900/850)] +
[Incoming External Inter-Cell Handover Requests (TCH) (900/850-900/850)] +
[Incoming External Inter-Cell Handover Requests (TCH) (1800/1900-1800/1900)] +
[Incoming External Inter-Cell Handover Requests (TCH) (900/850-1800/1900)] +
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[Incoming External Inter-Cell Handover Requests (TCH) (1800/1900-900/850)]
11.20.21 Failed TCH Seizures in TCH Handovers due to Busy
TCH (Traffic Channel)
Counter
K3011B: Failed TCH Seizures in TCH Handovers due to Busy TCH (Traffic Channel)
Meaning
This counter measures the number of failed TCH (traffic channel) seizures due to no TCH
available in TCH handovers.
Trigger Point
None.
Formula
Failed TCH Seizures in TCH Handovers due to Busy TCH (Traffic Channel) =
[Failed Internal Intra-Cell Handovers (Channel Unavailable) (TCH)] +
[Failed Incoming Internal Inter-Cell Handovers (Channel Unavailable) (TCH)] +
[Failed Incoming External Inter-Cell Handovers (Channel Unavailable) (TCH)]
11.20.22 Successful TCH Seizures in TCH Handovers (Traffic
Channel)
Counter
K3013B: Successful TCH Seizures in TCH Handovers (Traffic Channel)
Meaning
This counter measures the number of successful TCH (traffic channel) seizures by the MS
during TCH handovers.
Trigger Point
None.
Formula
Successful TCH Seizures in TCH Handovers (Traffic Channel) =
[Internal Intra-Cell Handover Detection Messages Received by BSC (TCHF)] +
[Internal Intra-Cell Handover Detection Messages Received by BSC (TCHH)] +
[Incoming Internal Inter-Cell Handover Detection Messages Received by BSC (TCHF)] +
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[Incoming Internal Inter-Cell Handover Detection Messages Received by BSC (TCHH)] +
[Incoming External Inter-Cell Handover Detection Messages Received by BSC (TCHF)] +
[Incoming External Inter-Cell Handover Detection Messages Received by BSC (TCHH)]
11.20.23 Call Drops in TCH Handovers (Traffic Channel)
Counter
K3012B: Call Drops in TCH Handovers (Traffic Channel)
Meaning
This counter measures the number of call drops due to the radio interface during TCH (traffic
channel) handovers.
Trigger Point
None.
Formula
Call Drops in TCH Handovers (Traffic Channel) =
[Call Drops on Radio Interface in Handover State (TCH)]
11.20.24 Traffic Volume on TCH (Traffic Channel)
Counter
K3014: Traffic Volume on TCH (Traffic Channel)
Meaning
This counter measures the ratio of the duration for which the MS occupies the TCH (traffic
channel) to the measurement period. The duration for which the MS occupies the TCH is
equal to the number of reports from the MS on the TCH multiplied by the reporting period
0.48s.
Trigger Point
None.
Formula
Traffic Volume on TCH (Traffic Channel) =
[Traffic Volume on TCH]
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11.20.25 Available TCHs
Counter
K3015: Available TCHs
Meaning
This counter measures the number of TCHs in idle or busy state in a cell of the BSC. Here,
the TCHs exclude the TCHs changed to SDCCHs through dynamic adjustment but include the
TCHs obtained from PDCHs through dynamic adjustment. This counter is equal to the total
number of available TCHs divided by the number of sample points.
Trigger Point
None.
Formula
Available TCHs =
[Mean Number of Available Channels (TCH)]
11.20.26 Configured TCHs
Counter
K3016: Configured TCHs
Meaning
This counter s the number of TCHs configured for a cell of the BSC. Here, the TCHs exclude
the TCHs changed to SDCCHs through dynamic adjustment but include the TCHs obtained
from PDCHs through dynamic adjustment. This counter is equal to the total number of
configured TCHs divided by the number of sample points.
Trigger Point
None.
Formula
Configured TCHs =
[Mean Number of Configured Channels (TCH)]
11.20.27 Dual-Band Handover Requests
Counter
K3170: Dual-Band Handover Requests
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Meaning
This counter measures the total number of intra-BSC and inter-BSC dual-band handover
requests.
Trigger Point
None.
Formula
Dual-Band Handover Requests =
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (900/850-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (900/850-1800/1900)] +
[Incoming External Inter-Cell Handover Requests (SDCCH) (900/850-1800/1900)] +
[Incoming External Inter-Cell Handover Requests (TCH) (900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (TCHF) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (TCHH) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (Directed Retry) (900/850-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (1800/1900-900/850)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (1800/1900-900/850)] +
[Incoming External Inter-Cell Handover Requests (SDCCH) (1800/1900-900/850)] +
[Incoming External Inter-Cell Handover Requests (TCH) (1800/1900-900/850)] +
[Outgoing External Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Outgoing External Inter-Cell Handover Requests (TCHF) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Outgoing External Inter-Cell Handover Requests (TCHH) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Outgoing External Inter-Cell Handover Requests (Directed Retry) (1800/1900-900/850)]
11.20.28 Successful Dual-Band Handovers
Counter
K3173: Successful Dual-Band Handovers
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Meaning
This counter measures the total number of successful intra-BSC and inter-BSC dual-band
handovers.
Trigger Point
None.
Formula
Successful Dual-Band Handovers=
([Incoming Internal Inter-Cell Handover Requests (SDCCH) (900/850-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (900/850-1800/1900)] +
[Incoming External Inter-Cell Handover Requests (SDCCH) (900/850-1800/1900)] +
[Incoming External Inter-Cell Handover Requests (TCH) (900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (TCHF) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (TCHH) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (Directed Retry) (900/850-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (1800/1900-900/850)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (1800/1900-900/850)] +
[Incoming External Inter-Cell Handover Requests (SDCCH) (1800/1900-900/850)] +
[Incoming External Inter-Cell Handover Requests (TCH) (1800/1900-900/850)] +
[Outgoing External Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Outgoing External Inter-Cell Handover Requests (TCHF) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Outgoing External Inter-Cell Handover Requests (TCHH) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Outgoing External Inter-Cell Handover Requests (Directed Retry) (1800/1900-900/850)])([Failed Incoming Internal Inter-Cell Handovers (SDCCH) (900/850-1800/1900)] +
[Failed Incoming Internal Inter-Cell Handovers (TCH) (900/850-1800/1900)] +
[Failed Incoming External Inter-Cell Handovers (SDCCH) (900/850-1800/1900)] +
[Failed Incoming External Inter-Cell Handovers (TCH) (900/850-1800/1900)] +
[Failed Outgoing External Inter-Cell Handovers (SDCCH) (Excluding Directed Retry)
(900/850-1800/1900)] +
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[Failed Outgoing External Inter-Cell Handovers (TCHF) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Failed Outgoing External Inter-Cell Handovers (TCHH) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Failed Outgoing External Inter-Cell Handovers (Directed Retry) (900/850-1800/1900)] +
[Failed Incoming Internal Inter-Cell Handovers (SDCCH) (1800/1900-900/850)] +
[Failed Incoming Internal Inter-Cell Handovers (TCH) (1800/1900-900/850)] +
[Failed Incoming External Inter-Cell Handovers (SDCCH) (1800/1900-900/850)] +
[Failed Incoming External Inter-Cell Handovers (TCH) (1800/1900-900/850)] +
[Failed Outgoing External Inter-Cell Handovers (SDCCH) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Failed Outgoing External Inter-Cell Handovers (TCHF) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Failed Outgoing External Inter-Cell Handovers (TCHH) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Failed Outgoing External Inter-Cell Handovers (Directed Retry) (1800/1900-900/850)])
11.21 Calls Discarded due to Overload per LAPD
11.21.1 Overview
The measurement unit Calls Discarded due to Overload per LAPD is used to measure the
number of random access requests discarded on LAPD.
Table 11-88 lists the counter of Calls Discarded due to Overload per LAPD.
Table 11-88 Counter of Calls Discarded due to Overload per LAPD
Number
Counter
1
A533: Random Access Requests Discarded on LAPD
11.21.2 Random Access Requests Discarded on LAPD
Counter
A533: Random Access Requests Discarded on LAPD
Meaning
If the number of random access messages exceeds those that can be processed in unit time,
usually 100ms, the BSC discards the new requests and triggers the counter.
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Trigger Point
The measurement is triggered when the BSC discards a new random access request because
of the upper limit of flow control exceeded.
Formula
None.
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12
MR Measurement
About This Chapter
The following table lists the sections of this chapter.
Section
Describes
12.1 Overview of MR
Measurement
Introduces the measurement units of MR Measurement.
12.2 Number of MRs per Cell
Describes the functions and counters of Number of MRs
per Cell.
12.3 Interference Band
Measurement per TRX
Describes the functions and counters of Interference Band
Measurement.
12.4 Power Control Messages
per Cell
Describes the functions and counters of Power Control
Messages per Cell.
12.5 Neighbor Cell Level
Measurement per Cell
Describes the functions and counters of Neighbor Cell
Level Measurement per Cell.
12.6 TCHF Receive Level
Measurement per TRX
Describes the functions and counters of TCHF Receive
level Measurement per TRX.
12.7 TCHH Receive Level
Measurement per TRX
Describes the functions and counters of TCHH Receive
level Measurement per TRX.
12.8 Receive Quality
Measurement per TRX
Describes the functions and counters of Receive Quality
Measurement per TRX.
12.9 Uplink-and-Downlink
Balance Measurement per
TRX
Describes the functions and counters of Uplink-andDownlink Balance Measurement per TRX.
12.10 Number of MRs Based
on TA per TRX
Describes the functions and counters of TA Traffic
Distribution Measurement per TRX.
12.11 Radio Link Failure
Measurement per TRX
Describes the functions and counters of Radio Link
Failure Measurement per TRX.
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12-2
Section
Describes
12.12 Radio Link Failure
Measurement based on TA per
TRX
Describes the functions and counters of Radio Link
Failure Measurement by TA Traffic Distribution per
TRX.
12.13 RQI Measurement based
on TA per TRX
Describes the functions and counters of RQI
Measurement by TA Traffic Distribution per TRX.
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12.1 Overview of MR Measurement
After seizing a specific channel, the MS periodically reports measurement reports (MRs) to
the BSC. The BSC performs power control and handover decision based on the MRs.
MR Measurement refers to the measurement of counters related to MRs and helps with
network optimization.
Table 12-1 lists the measurement units of MR Measurement.
Table 12-1 Measurement units of MR Measurement
Number
Measurement Unit
1
Number of MRs per Cell
2
Interference Band Measurement per TRX
3
Power Control Messages per Cell
4
Neighbor Cell Level Measurement per Cell
5
TCHF Receive Level Measurement per TRX
6
TCHH Receive Level Measurement per TRX
7
Receive Quality Measurement per TRX
8
Uplink-and-Downlink Balance Measurement per TRX
9
Number of MRs Based on TA per TRX
10
Radio Link Failure Measurement per TRX
11
Radio Link Failure Measurement based on TA per TRX
12
RQI Measurement based on TA per TRX
12.2 Number of MRs per Cell
12.2.1 Overview of Number of MRs per Cell
Number of MRs per Cell refers to the measurement of the number of MRs received by
channels in a cell.
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Table 12-2 lists the counters of Number of MRs per Cell.
Table 12-2 Counters of Number of MRs per Cell
Counter
Section
Sampled MRs per Cell
12.2.2
Analyzed MRs per Cell
12.2.3
12.2.2 Sampled MRs per Cell
Counter
Table 12-3 lists the counters of Sampled MRs per Cell.
Table 12-3 Counters of Sampled MRs per Cell
Number
Counter
1
S3010A: MRs on Signaling Channels (SDCCH) (M900/850 Cell)
2
S3010B: MRs on Signaling Channels (SDCCH) (M1800/1900 Cell)
3
S3017A: MRs on Signaling Channels (TCHF) (M900/850 Cell)
4
S3017B: MRs on Signaling Channels (TCHF) (M1800/1900 Cell)
5
S3018A: MRs on Signaling Channels (TCHH) (M900/850 Cell)
6
S3018B: MRs on Signaling Channels (TCHH) (M1800/1900 Cell)
7
S3007A: MRs on TCHs (TCHF) (M900/850 Cell)
8
S3007B: MRs on TCHs (TCHF) (M1800/1900 Cell)
9
S3008A: MRs on TCHs (TCHH) (M900/850 Cell)
10
S3008B: MRs on TCHs (TCHH) (M1800/1900 Cell)
11
S3012: MRs on Signaling Channels (Underlaid Subcell)
12
S3011: MRs on Signaling Channels (Overlaid Subcell)
13
S3002: MRs on TCHs (Underlaid Subcell)
14
S3001: MRs on TCHs (Overlaid Subcell)
Meaning
After receiving a valid MR, or a preprocessing MR, the BSC measures the number of received
MRs based on the following factors:
z
12-4
Frequency band the cell is in (M900/850, M1800/1900)
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z
Channel type (SDCCH, TCHF, and TCHH)
z
Cell type (normal, concentric)
z
Concentric cell attribute (overlaid subcell, underlaid subcell)
12 MR Measurement
Valid MRs refer to complete MRs that contain both valid uplink and downlink MRs.
Trigger Point
The BSC measures the number of received MRs based on the frequency band, channel type,
cell type, and concentric cell attributes, after it receives valid MRs from the MS.
Formula
None.
12.2.3 Analyzed MRs per Cell
Counter
Table 12-4 lists the counters of Analyzed MRs per Cell.
Table 12-4 Counters of Analyzed MRs per Cell
Number
Counter
1
CR3557: Traffic Volume of TCHs (Underlaid Subcell)
2
CR3558: Traffic Volume of TCHs (Overlaid Subcell)
3
TS3010: Traffic Volume of Signaling Channels (SDCCH)
4
TS3019: Traffic Volume of Signaling Channels (TCH)
5
CR355A: Traffic Volume of TCHs
6
CS300: MRs on TCHs
7
CS3007: MRs on TCHs (TCHF)
8
CS3008: MRs on TCHs (TCHH)
9
CS301: MRs on Signaling Channels
10
CS3010: MRs on Signaling Channels (SDCCH)
11
CS3017: MRs on Signaling Channels (TCHF)
12
CS3018: MRs on Signaling Channels (TCHH)
Meaning
None.
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The unit of the traffic volume in Table 12-4 is Erlang.
Trigger Point
None.
Formula
Traffic Volume of TCHs (Underlaid Subcell) = Mean Number of Busy TCHs (Underlaid
Subcell)
Traffic Volume of TCHs (Overlaid Subcell) = Mean Number of Busy TCHs (Overlaid Subcell)
Traffic Volume of Signaling Channels (SDCCH) = ([MRs on Signaling Channels (SDCCH)
(M900/850 Cell)] + [MRs on Signaling Channels (SDCCH) (M1800/1900
Cell)])*{47}/({100}*{GP}*{60})
Traffic Volume of Signaling Channels (TCH) = ([MRs on Signaling Channels (TCHF)
(M900/850 Cell)] + [MRs on Signaling Channels (TCHF) (M1800/1900 Cell)] + [MRs on
Signaling Channels (TCHH) (M900/850 Cell)] + [MRs on Signaling Channels (TCHH)
(M1800/1900 Cell)])*{48}/({100}*{GP}*{60})
Traffic Volume of TCHs = [Mean Number of Busy TCHs (TCHF) (900/850 Cell)] + [Mean
Number of Busy TCHs (TCHF) (1800/1900 Cell)] + [Mean Number of Busy TCHs (TCHH)
(900/850 Cell)] + [Mean Number of Busy TCHs (TCHH) (1800/1900 Cell)]
MRs on TCHs = [MRs on TCHs (TCHF) (M900/850 Cell)] + [MRs on TCHs (TCHH)
(M900/850 Cell)]
MRs on TCHs (TCHF) = [MRs on TCHs (TCHF) (M900/850 Cell)] + [MRs on TCHs (TCHF)
(M1800/1900 Cell)]
MRs on TCHs (TCHH) (M900/850 Cell) = [MRs on TCHs (TCHH) (M900/850 Cell)] +
[MRs on TCHs (TCHH) (M1800/1900 Cell)]
MRs on Signaling Channels = [MRs on Signaling Channels (SDCCH)] + [MRs on Signaling
Channels (TCHF)] + [MRs on Signaling Channels (TCHH)]
MRs on Signaling Channels (SDCCH) = [MRs on Signaling Channels (SDCCH) (M900/850
Cell)] + [MRs on Signaling Channels (SDCCH) (M1800/1900 Cell)]
MRs on Signaling Channels (TCHF)= [MRs on Signaling Channels (TCHF) (M900/850 Cell)]
+ [MRs on Signaling Channels (TCHF) (M1800/1900 Cell)]
MRs on Signaling Channels (TCHH) = [MRs on Signaling Channels (TCHH) (M900/850
Cell)] + [MRs on Signaling Channels (TCHH) (M1800/1900 Cell)]
12.3 Interference Band Measurement per TRX
12.3.1 Overview of Interference Band Measurement per TRX
Interference band is the interference level contained in the RF RES IND message that the BTS
reports to the BSC when the channel is idle. There are five levels. The level range of each
band is set through the Local Maintenance Terminal (LMT).
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Table 12-5 lists the typical settings of the power level range.
Table 12-5 Power level range of the interference band
Interference Band
Power Level Range
Interference band 1
–105 dBm to –98 dBm
Interference band 2
–98 dBm to –90 dBm
Interference band 3
–90 dBm to –87 dBm
Interference band 4
–87 dBm to –85 dBm
Interference band 5
–85 dBm to –47 dBm
The higher rank suggests higher interference level. An idle channel at interference band 4 or 5
suggests the existence of interference.
Interference Band Measurement per TRX refers to the measurement of idle channels that are
in the interference bands.
Table 12-6 lists the counters of Interference Band Measurement per TRX.
Table 12-6 Counters of Interference Band Measurement per TRX
Counter
Section
Sampled Measurement of Interference Band per TRX
12.3.2
Analyzed Measurement of Interference Band per TRX
12.3.3
12.3.2 Sampled Measurement of Interference Band per TRX
Counter
Table 12-7 lists the counters of Sampled Measurement of Interference Band.
Table 12-7 Counters of Sampled Measurement of Interference Band
Number
Counter
1
S4210A: Uplink Interference Indication Messages (SDCCH)
2
S4210B: Downlink Interference Indication Messages (SDCCH)
3
S4219A: Uplink Interference Indication Messages (TCH)
4
S4219B: Downlink Interference Indication Messages (TCH)
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Meaning
In HUAWEI Channel Allocation Algorithm II, the BTS compares the level and quality in the
MR with the thresholds set in data configuration. If both the level and the quality exceed the
preset thresholds, the counters are measured based on the channel type (TCH or SDCCH) and
interference direction (uplink or downlink).
Trigger Point
The counters are measured based on the channel type (TCH or SDCCH) and interference
direction (uplink or downlink) if the level and the quality exceed the preset thresholds.
Formula
None.
12.3.3 Analyzed Measurement of Interference Band per TRX
Counter
Table 12-8 lists the counters of Analyzed Measurement of Interference Band per TRX.
Table 12-8 Counters of Analyzed Measurement of Interference Band per TRX
12-8
Number
Counter
1
AS4200A: Mean Number of SDCCHs in Interference Band 1
2
AS4200B: Mean Number of SDCCHs in Interference Band 2
3
AS4200C: Mean Number of SDCCHs in Interference Band 3
4
AS4200D: Mean Number of SDCCHs in Interference Band 4
5
AS4200E: Mean Number of SDCCHs in Interference Band 5
6
AS4207A: Mean Number of TCHFs in Interference Band 1
7
AS4207B: Mean Number of TCHFs in Interference Band 2
8
AS4207C: Mean Number of TCHFs in Interference Band 3
9
AS4207D: Mean Number of TCHFs in Interference Band 4
10
AS4207E: Mean Number of TCHFs in Interference Band 5
11
AS4208A: Mean Number of TCHHs in Interference Band 1
12
AS4208B: Mean Number of TCHHs in Interference Band 2
13
AS4208C: Mean Number of TCHHs in Interference Band 3
14
AS4208D: Mean Number of TCHHs in Interference Band 4
15
AS4208E: Mean Number of TCHHs in Interference Band 5
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Meaning
The BSC receives from the BTS the RF RES IND message that contains the interference band
levels of all the idle channels in a TRX. Then the BSC measures the counters according to the
channel type (TCHF, TCHH, or SDCCH) and the interference band level.
Mean Number of SDCCHs in Interference Band = Number of SDCCHs in Interference Band
/[Sampled Number of Interference Bands]
Trigger Point
None.
Formula
Mean Number of SDCCHs in Interference Band 1 = [Number of SDCCHs in Interference
Band 1]/[ Sampled Number of Interference Bands]
Mean Number of SDCCHs in Interference Band 2 = [Number of SDCCHs in Interference
Band 2]/[ Sampled Number of Interference Bands]
Mean Number of SDCCHs in Interference Band 3 = [Number of SDCCHs in Interference
Band 3]/[ Sampled Number of Interference Bands]
Mean Number of SDCCHs in Interference Band 4 = [Number of SDCCHs in Interference
Band 4]/[ Sampled Number of Interference Bands]
Mean Number of SDCCHs in Interference Band 5 = [Number of SDCCHs in Interference
Band 5]/[ Sampled Number of Interference Bands]
Mean Number of TCHFs in Interference Band 1 = [Number of TCHFs in Interference Band
1]/[ Sampled Number of Interference Bands]
Mean Number of TCHFs in Interference Band 2 = [Number of TCHFs in Interference Band
2]/[ Sampled Number of Interference Bands]
Mean Number of TCHFs in Interference Band 3 = [Number of TCHFs in Interference Band
3]/[ Sampled Number of Interference Bands]
Mean Number of TCHFs in Interference Band 4 = [Number of TCHFs in Interference Band
4]/[ Sampled Number of Interference Bands]
Mean Number of TCHFs in Interference Band 5 = [Number of TCHFs in Interference Band
5]/[ Sampled Number of Interference Bands]
Mean Number of TCHHs in Interference Band 1 = [Number of TCHHs in Interference Band
1]/[ Sampled Number of Interference Bands]
Mean Number of TCHHs in Interference Band 2 = [Number of TCHHs in Interference Band
2]/[ Sampled Number of Interference Bands]
Mean Number of TCHHs in Interference Band 3 = [Number of TCHHs in Interference Band
3]/[ Sampled Number of Interference Bands]
Mean Number of TCHHs in Interference Band 4 = [Number of TCHHs in Interference Band
4]/[ Sampled Number of Interference Bands]
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Mean Number of TCHHs in Interference Band 5 = [Number of TCHHs in Interference Band
5]/[ Sampled Number of Interference Bands]
12.4 Power Control Messages per Cell
12.4.1 Overview of Power Control Messages per Cell
Power control refers to changing the transmission power of the MS or the BTS. The purpose
of power control is to reduce the interference, raise the spectrum usage, and prolong the
lifespan of the MS battery.
The factors that influence power control are the receive level and quality of received signals
in the MRs. If the quality of both the receive level and the received signals are good, you can
reduce the interference by lowering the transmission power at the peer end.
Power Control Messages per Cell refers to the measurement of the transmission power and
the receive level between the BTS and the MS.
Table 12-9 lists the counters of Power Control Messages per Cell.
Table 12-9 Counters of Power Control Messages per Cell
12-10
Counter
Section
Number of Power Control Messages per Cell
12.4.2
Sampled Power Rank During Power Control per Cell
12.4.3
Analyzed Power Rank During Power Control per Cell
12.4.4
Sampled Level of Power Control Signals per Cell
12.4.5
Analyzed Level of Power Control Signals per Cell
12.4.6
Sampling Quality of Power Control Signals per Cell
12.4.7
Analyzed Quality of Power Control Signals per Cell
12.4.8
Sampled Duration of Maximum Power per Cell
12.4.9
Analyzed Duration of Maximum Power per Cell
12.4.10
Distance Between MS and BTS per Cell
12.4.11
Maximum Distance Between MS and BTS per Cell
12.4.12
Number of Power Control Messages per Cell
12.4.13
Mean Distance Between MS and BTS per Cell
12.4.14
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12.4.2 Number of Power Control Messages per Cell
Counter
Table 12-10 lists the counters of Number of Power Control Messages per Cell.
Table 12-10 Counters of Number of Power Control Messages per Cell
Number
Counter
1
S3230A: Number of Power Control Increase Messages Sent to MS
2
S3230B: Number of Power Control Decrease Messages Sent to MS
3
S3231A: Number of Power Control Increase Messages Sent to BTS
4
S3231B: Number of Power Control Decrease Messages Sent to BTS
Meaning
After receiving the MR, the BSC compares the uplink receive level and the uplink receive
quality with the preset thresholds and makes the following decisions:
z
If the transmission power of the MS need be increased, the BSC sends the power
increase request to the MS, and the S3230A: Number of Power Control Increase
Messages Sent to MS is measured.
z
If the transmission power of the MS need be decreased, the BSC sends the power
decrease request to the MS, and the S3230B: Number of Power Control Decrease
Messages Sent to MS is measured.
z
If the transmission power of the BTS need be increased, the BSC sends the power
increase request to the BTS, and the S3231A: Number of Power Control Increase
Messages Sent to BTS is measured.
z
If the transmission power of the BTS need be decreased, the BSC sends the power
decrease request to the BTS, and the S3231B: Number of Power Control Decrease
Messages Sent to BTS is measured.
Trigger Point
The BSC measures the counters based on the power control objectives (MS or BTS) and type
(to increase or decrease the transmit power) after receiving the valid MRs from the MS.
Formula
None.
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12 MR Measurement
12.4.3 Sampled Power Rank During Power Control per Cell
Counter
Table 12-11 lists the counters of Sampled Power Rank During Power Control per Cell.
Table 12-11 Counters of Sampled Power Rank During Power Control per Cell
Number
Counter
1
S3240: MS Power Rank
2
S3241: BTS Power Rank
3
S327A: Number of Times (Maximum Uplink Transmit Power)
4
S327B: Number of Times (Maximum Downlink Transmit Power)
Meaning
In S3240: MS Power Rank, higher rank of the transmit power indicates smaller transmit
power of the MS.
In S3241: BTS Power Rank, higher rank of the transmit power indicates smaller transmit
power of the BTS.
The counter S327A: Number of Times (Maximum Uplink Transmit Power) increases by 1
when the rank of the uplink transmit power in the MR is lower than or equal to the rank of the
Maximum MS Transmit Power in the system message.
The counter S327B: Number of Times (Maximum Downlink Transmit Power) increases by 1
when the rank of the downlink transmit power is 0.
Trigger Point
The BSC measures the MS Power Rank and the BTS Power Rank based on the transmit
power ranks of the MS and the BTS after receiving the valid MRs from the MS.
Formula
None.
12.4.4 Analyzed Power Rank During Power Control per Cell
Counter
Table 12-12 lists the counters of Analyzed Power Rank During Power Control per Cell.
Table 12-12 Counters of Analyzed Power Rank During Power Control per Cell
12-12
Number
Counter
1
AS3240: Mean Power Rank of MS
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Number
Counter
2
AS3241: Mean Power Rank of BTS
12 MR Measurement
Meaning
The counters measure the mean transmit power of the MS and the BTS.
Trigger Point
None.
Formula
Mean Power Rank of MS = [MS Power Rank]/[Number of Power Control Messages]
Mean Power Rank of BTS = [BTS Power Rank]/[ Number of Power Control Messages]
12.4.5 Sampled Level of Power Control Signals per Cell
Counter
Table 12-13 lists the counters of Sampled Level of Power Control Signals per Cell.
Table 12-13 Counters of Sampled Level of Power Control Signals per Cell
Number
Counter
1
S325B: Strength of Downlink Signals
2
S325A: Strength of Uplink Signals
Meaning
The counters measure the uplink and downlink receive level.
Trigger Point
The BSC measures the counters based on the uplink and downlink receive level after
receiving the valid MRs from the MS.
Formula
None.
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Performance Counter Reference
12 MR Measurement
12.4.6 Analyzed Level of Power Control Signals per Cell
Counter
Table 12-14 lists the counters of Analyzed Level of Power Control Signals per Cell.
Table 12-14 Counters of Analyzed Level of Power Control Signals per Cell
Number
Counter
1
AS325B: Mean Strength of Downlink Signals
2
AS325A: Mean Strength of Uplink Signals
Meaning
The counters measure the mean uplink and downlink receive level.
Trigger Point
None.
Formula
Mean Strength of Downlink Signals = [Strength of Downlink Signals]/[ Number of Power
Control Messages]
Mean Strength of Uplink Signals = [Strength of Uplink Signals]/[ Number of Power Control
Messages]
12.4.7 Sampling Quality of Power Control Signals per Cell
Counter
Table 12-15 lists the counters of Quality of Power Control Signals per Cell.
Table 12-15 Counters of Quality of Power Control Signals per Cell
Number
Counter
1
S326B: Quality of Downlink Signals
2
S326A: Quality of Uplink Signals
Meaning
The counters measure the quality of the uplink and downlink received signals. The receive
quality has eight ranks, and lower rank suggests better quality.
12-14
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Trigger Point
The BSC measures the counters based on the quality ranks of the uplink and downlink
received signals after receiving valid MRs from the MS.
Formula
None.
12.4.8 Analyzed Quality of Power Control Signals per Cell
Counter
Table 12-16 lists the counters of Analyzed Quality of Power Control Signals per Cell.
Table 12-16 Counters of Analyzed Quality of Power Control Signals per Cell
Number
Counter
1
AS326B: Mean Quality of Downlink Signals
2
AS326A: Mean Quality of Uplink Signals
Meaning
The counters measure the mean receive quality of the uplink and downlink signals. The
receive quality has eight ranks, and lower rank suggests better quality.
Trigger Point
None.
Formula
Mean Quality of Downlink Signals = [Quality of Downlink Signals]/[Number of Power
Control Messages]
Mean Quality of Uplink Signals = [Quality of Uplink Signals]/[Number of Power Control
Messages]
12.4.9 Sampled Duration of Maximum Power per Cell
Counter
Table 12-17 lists the counters of Sampled Duration of Maximum Power per Cell.
Table 12-17 Counters of Sampled Duration of Maximum Power per Cell
Number
Counter
1
TS327B: Duration of Maximum Downlink Power
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Performance Counter Reference
12 MR Measurement
Number
Counter
2
TS327A: Duration of Maximum Uplink Power
Meaning
This counter measures the duration of the maximum uplink and downlink power.
Trigger Point
If the downlink transmit power rank is 0, the counter TS427B: Duration of Maximum
Downlink Power increases by 0.48 s.
If the uplink transmit power rank is lower than or equal to the Maximum Transmit Power
Control Level in the system information, the counter TS427A: Duration of Maximum Uplink
Power increases by 0.48 s.
Formula
None.
12.4.10 Analyzed Duration of Maximum Power per Cell
Counter
Table 12-18 lists the counters of Analyzed Duration of Maximum Power per Cell.
Table 12-18 Counters of Analyzed Duration of Maximum Power per Cell
Number
Counter
1
RS327B: Ratio of Maximum Downlink Power Duration (%)
2
RS327A: Ratio of Maximum Uplink Power Duration (%)
Meaning
RS327B: Ratio of Maximum Downlink Power Duration (%) measures the ratio of the
Duration of Maximum Downlink Power to the Number of Power Control Messages. Great
value of this counter suggests bad coverage or improper settings of power control parameters.
RS327A: Ratio of Maximum Uplink Power Duration (%) measures the ratio of the Duration
of Maximum Uplink Power to the Number of Power Control Messages. Great value of this
counter suggests low rank of the uplink receive level or improper settings of power control
parameters.
Trigger Point
None.
12-16
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Formula
Ratio of Maximum Downlink Power Duration (%) = {100}*[ Duration of Maximum
Downlink Power]/([Number of Power Control Messages]*{48}/{100})
Ratio of Maximum Uplink Power Duration (%)= {100}*[ Duration of Maximum Uplink
Power]/([Number of Power Control Messages]*{48}/{100})
12.4.11 Distance Between MS and BTS per Cell
Counter
S3280: Distance Between MS and BTS
Meaning
The distance between the MS and the BTS is measured in TA (one TA equals to 550 m.) The
value of TA increases with the distance.
This counter measures the distance between the MS and the BTS.
Trigger Point
The counter increases by 1 when the BSC receives a valid MR that contains the TA.
Formula
None.
12.4.12 Maximum Distance Between MS and BTS per Cell
Counter
S3281: Maximum Distance Between MS and BTS
Meaning
The distance between the MS and the BTS is measured in TA (one TA equals to 550 m.) The
value of TA increases with the distance.
This counter measures the maximum distance between the MS and the BTS.
Trigger Point
This counter is measured when the BSC records the maximum distance (in TA) in a valid MR
that the MS reports in a GP.
Formula
None.
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12 MR Measurement
12.4.13 Number of Power Control Messages per Cell
Counter
S329: Number of Power Control Messages
Meaning
This counter measures the total number of cell power control messages.
Trigger Point
This counter is measured when the BSC receives a valid MR that contains a power control
message.
Formula
None.
12.4.14 Mean Distance Between MS and BTS
Counter
AS3280: Mean Distance Between MS and BTS.
Meaning
This counter measures the mean distance between the MS and the BTS.
Trigger Point
None.
Formula
Mean Distance Between MS and BTS = [Distance Between MS and BTS]/[Number of Power
Control Messages]
12.5 Neighbor Cell Level Measurement per Cell
12.5.1 Overview of Neighbor Cell Level Measurement per Cell
Neighbor Cell Level Measurement per Cell refers to the measurement of mean receive level
of neighbor cells. This measurement unit helps to determine whether to configure neighbor
cells.
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12 MR Measurement
Table 12-19 lists the counters of Neighbor Cell Level Measurement per Cell.
Table 12-19 Counters of Neighbor Cell Level Measurement per Cell
Number
Counter
1
S360: Strength of Signals in Neighbor Cells
2
S361: Number of MRs of Neighbor Cells
3
AS360: Mean Strength of Signals in Neighbor Cells
12.5.2 Strength of Signals in Neighbor Cells
Counter
S360: Strength of Signals in Neighbor Cells.
Meaning
This counter measures the strength of signals in neighbor cells.
Trigger Point
This counter is measured when the BSC receives a valid MR and accumulates the receive
level of all the neighbor cells.
This counter's measurement object can be configured. If the measurement object is not configured, this
counter is not measured.
Formula
None.
12.5.3 Number of MRs of Neighbor Cells
Counter
S361: Number of MRs of Neighbor Cells.
Meaning
This counter measures the number of MRs in neighbor cells.
Trigger Point
This counter is measured based on the neighboring cells when the BSC receives a valid MR
from the MS.
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12 MR Measurement
This counter's measurement object can be configured. If the measurement object is not configured, this
counter is not measured.
Formula
None.
12.5.4 Mean Strength of Signals in Neighbor Cells
Counter
AS360: Mean Strength of Signals in Neighbor Cells.
Meaning
This counter measures the mean strength of signals in neighbor cells in a GP.
Trigger Point
None.
Formula
Mean Strength of Signals in Neighbor Cells= [Strength of Signals in Neighbor Cells]/[ MRs
of Neighbor Cells]
12.6 TCHF Receive Level Measurement per TRX
Counter
The valid MRs that the BSC receives contain the ranks of the uplink and downlink receive
level and the ranks of the uplink and downlink receive quality.
The receive level has eight ranks, and higher rank suggests greater receive level, as shown in
Table 12-20.
Table 12-20 Rank of the receive level
12-20
Rank of Receive Level
Receive Level(dBm)
0
<–100
1
(-100,85]
2
(-85,-80]
3
(-80,-75]
4
(-75,-70]
5
(-70,-65]
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Rank of Receive Level
Receive Level(dBm)
6
(-65,-60]
7
>-60
The receive quality has eight ranks, and higher rank suggests worse receive quality, as shown
in Table 12-21.
Table 12-21 Rank of the receive quality based on the bit error rate
Rank of Receive Quality
Bit Error Rate
0
< 0.2%
1
0.2%–0.4%
2
0.4%–0.8%
3
0.8%–1.6%
4
1.6%–3.2%
5
3.2%–6.4%
6
6.4%–12.8%
7
> 12.8%
TCHF Receive Level Measurement per TRX refers to the measurement of the sampled
receive level ranks and receive quality ranks in the MRs on the TCHF.
Table 12-22 lists the counters of TCHF Receive Level Measurement per TRX.
Table 12-22 Counters of TCHF Receive Level Measurement per TRX
Number
Counter
1
S4100A: Number of MRs on Uplink TCHF (Receive Level Rank 0 and
Receive Quality Rank 0)
2
S4101A: Number of MRs on Uplink TCHF (Receive Level Rank 0 and
Receive Quality Rank 1)
3
S4102A: Number of MRs on Uplink TCHF (Receive Level Rank 0 and
Receive Quality Rank 2)
4
S4103A: Number of MRs on Uplink TCHF (Receive Level Rank 0 and
Receive Quality Rank 3)
5
S4104A: Number of MRs on Uplink TCHF (Receive Level Rank 0 and
Receive Quality Rank 4)
6
S4105A: Number of MRs on Uplink TCHF (Receive Level Rank 0 and
Receive Quality Rank 5)
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Performance Counter Reference
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12-22
Number
Counter
7
S4106A: Number of MRs on Uplink TCHF (Receive Level Rank 0 and
Receive Quality Rank 6)
8
S4107A: Number of MRs on Uplink TCHF (Receive Level Rank 0 and
Receive Quality Rank 7)
9
S4110A: Number of MRs on Uplink TCHF (Receive Level Rank 1 and
Receive Quality Rank 0)
10
S4111A: Number of MRs on Uplink TCHF (Receive Level Rank 1 and
Receive Quality Rank 1)
11
S4112A: Number of MRs on Uplink TCHF (Receive Level Rank 1 and
Receive Quality Rank 2)
12
S4113A: Number of MRs on Uplink TCHF (Receive Level Rank 1 and
Receive Quality Rank 3)
13
S4114A: Number of MRs on Uplink TCHF (Receive Level Rank 1 and
Receive Quality Rank 4)
14
S4115A: Number of MRs on Uplink TCHF (Receive Level Rank 1 and
Receive Quality Rank 5)
15
S4116A: Number of MRs on Uplink TCHF (Receive Level Rank 1 and
Receive Quality Rank 6)
16
S4117A: Number of MRs on Uplink TCHF (Receive Level Rank 1 and
Receive Quality Rank 7)
17
S4120A: Number of MRs on Uplink TCHF (Receive Level Rank 1 and
Receive Quality Rank 8)
18
S4121A: Number of MRs on Uplink TCHF (Receive Level Rank 2 and
Receive Quality Rank 1)
19
S4122A: Number of MRs on Uplink TCHF (Receive Level Rank 2 and
Receive Quality Rank 2)
20
S4123A: Number of MRs on Uplink TCHF (Receive Level Rank 2 and
Receive Quality Rank 3)
21
S4124A: Number of MRs on Uplink TCHF (Receive Level Rank 2 and
Receive Quality Rank 4)
22
S4125A: Number of MRs on Uplink TCHF (Receive Level Rank 2 and
Receive Quality Rank 5)
23
S4126A: Number of MRs on Uplink TCHF (Receive Level Rank 2 and
Receive Quality Rank 6)
24
S4127A: Number of MRs on Uplink TCHF (Receive Level Rank 2 and
Receive Quality Rank 7)
25
S4130A: Number of MRs on Uplink TCHF (Receive Level Rank 3 and
Receive Quality Rank 0)
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12 MR Measurement
Number
Counter
26
S4131A: Number of MRs on Uplink TCHF (Receive Level Rank 3 and
Receive Quality Rank 1)
27
S4132A: Number of MRs on Uplink TCHF (Receive Level Rank 3 and
Receive Quality Rank 2)
28
S4133A: Number of MRs on Uplink TCHF (Receive Level Rank 3 and
Receive Quality Rank 3)
29
S4134A: Number of MRs on Uplink TCHF (Receive Level Rank 3 and
Receive Quality Rank 4)
30
S4135A: Number of MRs on Uplink TCHF (Receive Level Rank 3 and
Receive Quality Rank 5)
31
S4136A: Number of MRs on Uplink TCHF (Receive Level Rank 3 and
Receive Quality Rank 6)
32
S4137A: Number of MRs on Uplink TCHF (Receive Level Rank 3 and
Receive Quality Rank 7)
33
S4140A: Number of MRs on Uplink TCHF (Receive Level Rank 4 and
Receive Quality Rank 0)
34
S4141A: Number of MRs on Uplink TCHF (Receive Level Rank 4 and
Receive Quality Rank 1)
35
S4142A: Number of MRs on Uplink TCHF (Receive Level Rank 4 and
Receive Quality Rank 2)
36
S4143A: Number of MRs on Uplink TCHF (Receive Level Rank 4 and
Receive Quality Rank 3)
37
S4144A: Number of MRs on Uplink TCHF (Receive Level Rank 4 and
Receive Quality Rank 4)
38
S4145A: Number of MRs on Uplink TCHF (Receive Level Rank 4 and
Receive Quality Rank 5)
39
S4146A: Number of MRs on Uplink TCHF (Receive Level Rank 4 and
Receive Quality Rank 6)
40
S4147A: Number of MRs on Uplink TCHF (Receive Level Rank 4 and
Receive Quality Rank 7)
41
S4150A: Number of MRs on Uplink TCHF (Receive Level Rank 5 and
Receive Quality Rank 0)
42
S4151A: Number of MRs on Uplink TCHF (Receive Level Rank 5 and
Receive Quality Rank 1)
43
S4152A: Number of MRs on Uplink TCHF (Receive Level Rank 5 and
Receive Quality Rank 2)
44
S4153A: Number of MRs on Uplink TCHF (Receive Level Rank 5 and
Receive Quality Rank 3)
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12 MR Measurement
12-24
Number
Counter
45
S4154A: Number of MRs on Uplink TCHF (Receive Level Rank 5 and
Receive Quality Rank 4)
46
S4155A: Number of MRs on Uplink TCHF (Receive Level Rank 5 and
Receive Quality Rank 5)
47
S4156A: Number of MRs on Uplink TCHF (Receive Level Rank 5 and
Receive Quality Rank 6)
48
S4157A: Number of MRs on Uplink TCHF (Receive Level Rank 5 and
Receive Quality Rank 7)
49
S4160A: Number of MRs on Uplink TCHF (Receive Level Rank 6 and
Receive Quality Rank 0)
50
S4161A: Number of MRs on Uplink TCHF (Receive Level Rank 6 and
Receive Quality Rank 1)
51
S4162A: Number of MRs on Uplink TCHF (Receive Level Rank 6 and
Receive Quality Rank 2)
52
S4163A: Number of MRs on Uplink TCHF (Receive Level Rank 6 and
Receive Quality Rank 3)
53
S4164A: Number of MRs on Uplink TCHF (Receive Level Rank 6 and
Receive Quality Rank 4)
54
S4165A: Number of MRs on Uplink TCHF (Receive Level Rank 6 and
Receive Quality Rank 5)
55
S4166A: Number of MRs on Uplink TCHF (Receive Level Rank 6 and
Receive Quality Rank 6)
56
S4167A: Number of MRs on Uplink TCHF (Receive Level Rank 6 and
Receive Quality Rank 7)
57
S4170A: Number of MRs on Uplink TCHF (Receive Level Rank 7 and
Receive Quality Rank 0)
58
S4171A: Number of MRs on Uplink TCHF (Receive Level Rank 7 and
Receive Quality Rank 1)
59
S4172A: Number of MRs on Uplink TCHF (Receive Level Rank 7 and
Receive Quality Rank 2)
60
S4173A: Number of MRs on Uplink TCHF (Receive Level Rank 7 and
Receive Quality Rank 3)
61
S4174A: Number of MRs on Uplink TCHF (Receive Level Rank 7 and
Receive Quality Rank 4)
62
S4175A: Number of MRs on Uplink TCHF (Receive Level Rank 7 and
Receive Quality Rank 5)
63
S4176A: Number of MRs on Uplink TCHF (Receive Level Rank 7 and
Receive Quality Rank 6)
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Performance Counter Reference
12 MR Measurement
Number
Counter
64
S4177A: Number of MRs on Uplink TCHF (Receive Level Rank 7 and
Receive Quality Rank 7)
65
S4100B: Number of MRs on Downlink TCHF (Receive Level Rank 0 and
Receive Quality Rank 0)
66
S4101B: Number of MRs on Downlink TCHF (Receive Level Rank 0 and
Receive Quality Rank 1)
67
S4102B: Number of MRs on Downlink TCHF (Receive Level Rank 0 and
Receive Quality Rank 2)
68
S4103B: Number of MRs on Downlink TCHF (Receive Level Rank 0 and
Receive Quality Rank 3)
69
S4104B: Number of MRs on Downlink TCHF (Receive Level Rank 0 and
Receive Quality Rank 4)
70
S4105B: Number of MRs on Downlink TCHF (Receive Level Rank 0 and
Receive Quality Rank 5)
71
S4106B: Number of MRs on Downlink TCHF (Receive Level Rank 0 and
Receive Quality Rank 6)
72
S4107B: Number of MRs on Downlink TCHF (Receive Level Rank 0 and
Receive Quality Rank 7)
73
S4110B: Number of MRs on Downlink TCHF (Receive Level Rank 1 and
Receive Quality Rank 0)
74
S4111B: Number of MRs on Downlink TCHF (Receive Level Rank 1 and
Receive Quality Rank 1)
75
S4112B: Number of MRs on Downlink TCHF (Receive Level Rank 1 and
Receive Quality Rank 2)
76
S4113B: Number of MRs on Downlink TCHF (Receive Level Rank 1 and
Receive Quality Rank 3)
77
S4114B: Number of MRs on Downlink TCHF (Receive Level Rank 1 and
Receive Quality Rank 4)
78
S4115B: Number of MRs on Downlink TCHF (Receive Level Rank 1 and
Receive Quality Rank 5)
79
S4116B: Number of MRs on Downlink TCHF (Receive Level Rank 1 and
Receive Quality Rank 6)
80
S4117B: Number of MRs on Downlink TCHF (Receive Level Rank 1 and
Receive Quality Rank 7)
81
S4120B: Number of MRs on Downlink TCHF (Receive Level Rank 2 and
Receive Quality Rank 0)
82
S4121B: Number of MRs on Downlink TCHF (Receive Level Rank 1 and
Receive Quality Rank 1)
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12 MR Measurement
12-26
Number
Counter
83
S4122B: Number of MRs on Downlink TCHF (Receive Level Rank 1 and
Receive Quality Rank 2)
84
S4123B: Number of MRs on Downlink TCHF (Receive Level Rank 1 and
Receive Quality Rank 3)
85
S4124B: Number of MRs on Downlink TCHF (Receive Level Rank 1 and
Receive Quality Rank 4)
86
S4125B: Number of MRs on Downlink TCHF (Receive Level Rank 1 and
Receive Quality Rank 5)
87
S4126B: Number of MRs on Downlink TCHF (Receive Level Rank 1 and
Receive Quality Rank 6)
88
S4127B: Number of MRs on Downlink TCHF (Receive Level Rank 1 and
Receive Quality Rank 7)
89
S4130B: Number of MRs on Downlink TCHF (Receive Level Rank 3 and
Receive Quality Rank 0)
90
S4131B: Number of MRs on Downlink TCHF (Receive Level Rank 3 and
Receive Quality Rank 1)
91
S4132B: Number of MRs on Downlink TCHF (Receive Level Rank 3 and
Receive Quality Rank 2)
92
S4133B: Number of MRs on Downlink TCHF (Receive Level Rank 3 and
Receive Quality Rank 3)
93
S4134B: Number of MRs on Downlink TCHF (Receive Level Rank 3 and
Receive Quality Rank 4)
94
S4135B: Number of MRs on Downlink TCHF (Receive Level Rank 3 and
Receive Quality Rank 5)
95
S4136B: Number of MRs on Downlink TCHF (Receive Level Rank 3 and
Receive Quality Rank 6)
96
S4137B: Number of MRs on Downlink TCHF (Receive Level Rank 3 and
Receive Quality Rank 7)
97
S4140B: Number of MRs on Downlink TCHF (Receive Level Rank 4 and
Receive Quality Rank 0)
98
S4141B: Number of MRs on Downlink TCHF (Receive Level Rank 4 and
Receive Quality Rank 1)
99
S4142B: Number of MRs on Downlink TCHF (Receive Level Rank 4 and
Receive Quality Rank 2)
100
S4143B: Number of MRs on Downlink TCHF (Receive Level Rank 4 and
Receive Quality Rank 3)
101
S4144B: Number of MRs on Downlink TCHF (Receive Level Rank 4 and
Receive Quality Rank 4)
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12 MR Measurement
Number
Counter
102
S4145B: Number of MRs on Downlink TCHF (Receive Level Rank 4 and
Receive Quality Rank 5)
103
S4146B: Number of MRs on Downlink TCHF (Receive Level Rank 4 and
Receive Quality Rank 6)
104
S4147B: Number of MRs on Downlink TCHF (Receive Level Rank 4 and
Receive Quality Rank 7)
105
S4150B: Number of MRs on Downlink TCHF (Receive Level Rank 5 and
Receive Quality Rank 0)
106
S4151B: Number of MRs on Downlink TCHF (Receive Level Rank 5 and
Receive Quality Rank 1)
107
S4152B: Number of MRs on Downlink TCHF (Receive Level Rank 5 and
Receive Quality Rank 2)
108
S4153B: Number of MRs on Downlink TCHF (Receive Level Rank 5 and
Receive Quality Rank 3)
109
S4154B: Number of MRs on Downlink TCHF (Receive Level Rank 5 and
Receive Quality Rank 4)
110
S4155B: Number of MRs on Downlink TCHF (Receive Level Rank 5 and
Receive Quality Rank 5)
111
S4156B: Number of MRs on Downlink TCHF (Receive Level Rank 5 and
Receive Quality Rank 6)
112
S4157B: Number of MRs on Downlink TCHF (Receive Level Rank 5 and
Receive Quality Rank 7)
113
S4160B: Number of MRs on Downlink TCHF (Receive Level Rank 6 and
Receive Quality Rank 0)
114
S4161B: Number of MRs on Downlink TCHF (Receive Level Rank 6 and
Receive Quality Rank 1)
115
S4162B: Number of MRs on Downlink TCHF (Receive Level Rank 6 and
Receive Quality Rank 2)
116
S4163B: Number of MRs on Downlink TCHF (Receive Level Rank 6 and
Receive Quality Rank 3)
117
S4164B: Number of MRs on Downlink TCHF (Receive Level Rank 6 and
Receive Quality Rank 4)
118
S4165B: Number of MRs on Downlink TCHF (Receive Level Rank 6 and
Receive Quality Rank 5)
119
S4166B: Number of MRs on Downlink TCHF (Receive Level Rank 6 and
Receive Quality Rank 6)
120
S4167B: Number of MRs on Downlink TCHF (Receive Level Rank 6 and
Receive Quality Rank 7)
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
12 MR Measurement
Number
Counter
121
S4170B: Number of MRs on Downlink TCHF (Receive Level Rank 7 and
Receive Quality Rank 0)
122
S4171B: Number of MRs on Downlink TCHF (Receive Level Rank 7 and
Receive Quality Rank 1)
123
S4172B: Number of MRs on Downlink TCHF (Receive Level Rank 7 and
Receive Quality Rank 2)
124
S4173B: Number of MRs on Downlink TCHF (Receive Level Rank 7 and
Receive Quality Rank 3)
125
S4174B: Number of MRs on Downlink TCHF (Receive Level Rank 7 and
Receive Quality Rank 4)
126
S4175B: Number of MRs on Downlink TCHF (Receive Level Rank 7 and
Receive Quality Rank 5)
127
S4176B: Number of MRs on Downlink TCHF (Receive Level Rank 7 and
Receive Quality Rank 6)
128
S4177B: Number of MRs on Downlink TCHF (Receive Level Rank 7 and
Receive Quality Rank 7)
Meaning
The BSC measures these counters based on the following factors after receiving a valid MR
or a valid preprocessing MR:
z
TCHF uplink receive level rank (0–7)
z
TCHF uplink receive quality rank (0–7)
z
TCHF downlink receive level rank (0–7)
z
TCHF downlink receive quality rank (0–7)
Trigger Point
The BSC measures these counters based on the uplink or downlink receive level and the
uplink or downlink receive quality after receiving a valid MR from the MS.
The BSC measures these counters based on the uplink or downlink receive level and the
uplink or downlink receive quality after receiving a valid preprocessing MR from the BTS.
Formula
None.
12-28
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
12 MR Measurement
12.7 TCHH Receive Level Measurement per TRX
Counter
TCHH Receive Level Measurement per TRX refers to the measurement of the sampled
receive level ranks and receive quality ranks in the MRs on the TCHH.
Table 12-23 lists the counters of TCHH Receive Level Measurement per TRX.
Table 12-23 Counters of TCHH Receive Level Measurement per TRX
Number
Counter
1
S4100C: Number of MRs on Uplink TCHH (Receive Level Rank 0 and
Receive Quality Rank 0)
2
S4101C: Number of MRs on Uplink TCHH (Receive Level Rank 0 and
Receive Quality Rank 1)
3
S4102C: Number of MRs on Uplink TCHH (Receive Level Rank 0 and
Receive Quality Rank 2)
4
S4103C: Number of MRs on Uplink TCHH (Receive Level Rank 0 and
Receive Quality Rank 3)
5
S4104C: Number of MRs on Uplink TCHH (Receive Level Rank 0 and
Receive Quality Rank 4)
6
S4105C: Number of MRs on Uplink TCHH (Receive Level Rank 0 and
Receive Quality Rank 5)
7
S4106C: Number of MRs on Uplink TCHH (Receive Level Rank 0 and
Receive Quality Rank 6)
8
S4107C: Number of MRs on Uplink TCHH (Receive Level Rank 0 and
Receive Quality Rank 7)
9
S4110C: Number of MRs on Uplink TCHH (Receive Level Rank 1 and
Receive Quality Rank 0)
10
S4111C: Number of MRs on Uplink TCHH (Receive Level Rank 1 and
Receive Quality Rank 1)
11
S4112C: Number of MRs on Uplink TCHH (Receive Level Rank 1 and
Receive Quality Rank 2)
12
S4113C: Number of MRs on Uplink TCHH (Receive Level Rank 1 and
Receive Quality Rank 3)
13
S4114C: Number of MRs on Uplink TCHH (Receive Level Rank 1 and
Receive Quality Rank 4)
14
S4115C: Number of MRs on Uplink TCHH (Receive Level Rank 1 and
Receive Quality Rank 5)
15
S4116C: Number of MRs on Uplink TCHH (Receive Level Rank 1 and
Receive Quality Rank 6)
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12 MR Measurement
12-30
Number
Counter
16
S4117C: Number of MRs on Uplink TCHH (Receive Level Rank 1 and
Receive Quality Rank 7)
17
S4120C: Number of MRs on Uplink TCHH (Receive Level Rank 2 and
Receive Quality Rank 0)
18
S4121C: Number of MRs on Uplink TCHH (Receive Level Rank 2 and
Receive Quality Rank 1)
19
S4122C: Number of MRs on Uplink TCHH (Receive Level Rank 2 and
Receive Quality Rank 2)
20
S4123C: Number of MRs on Uplink TCHH (Receive Level Rank 2 and
Receive Quality Rank 3)
21
S4124C: Number of MRs on Uplink TCHH (Receive Level Rank 2 and
Receive Quality Rank 4)
22
S4125C: Number of MRs on Uplink TCHH (Receive Level Rank 2 and
Receive Quality Rank 5)
23
S4126C: Number of MRs on Uplink TCHH (Receive Level Rank 2 and
Receive Quality Rank 6)
24
S4127C: Number of MRs on Uplink TCHH (Receive Level Rank 2 and
Receive Quality Rank 7)
25
S4130C: Number of MRs on Uplink TCHH (Receive Level Rank 3 and
Receive Quality Rank 0)
26
S4131C: Number of MRs on Uplink TCHH (Receive Level Rank 3 and
Receive Quality Rank 1)
27
S4132C: Number of MRs on Uplink TCHH (Receive Level Rank 3 and
Receive Quality Rank 2)
28
S4133C: Number of MRs on Uplink TCHH (Receive Level Rank 3 and
Receive Quality Rank 3)
29
S4134C: Number of MRs on Uplink TCHH (Receive Level Rank 3 and
Receive Quality Rank 4)
30
S4135C: Number of MRs on Uplink TCHH (Receive Level Rank 3 and
Receive Quality Rank 5)
31
S4136C: Number of MRs on Uplink TCHH (Receive Level Rank 3 and
Receive Quality Rank 6)
32
S4137C: Number of MRs on Uplink TCHH (Receive Level Rank 3 and
Receive Quality Rank 7)
33
S4140C: Number of MRs on Uplink TCHH (Receive Level Rank 4 and
Receive Quality Rank 0)
34
S4141C: Number of MRs on Uplink TCHH (Receive Level Rank 4 and
Receive Quality Rank 1)
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
12 MR Measurement
Number
Counter
35
S4142C: Number of MRs on Uplink TCHH (Receive Level Rank 4 and
Receive Quality Rank 2)
36
S4143C: Number of MRs on Uplink TCHH (Receive Level Rank 4 and
Receive Quality Rank 3)
37
S4144C: Number of MRs on Uplink TCHH (Receive Level Rank 4 and
Receive Quality Rank 4)
38
S4145C: Number of MRs on Uplink TCHH (Receive Level Rank 4 and
Receive Quality Rank 5)
39
S4146C: Number of MRs on Uplink TCHH (Receive Level Rank 4 and
Receive Quality Rank 6)
40
S4147C: Number of MRs on Uplink TCHH (Receive Level Rank 4 and
Receive Quality Rank 7)
41
S4150C: Number of MRs on Uplink TCHH (Receive Level Rank 5 and
Receive Quality Rank 0)
42
S4151C: Number of MRs on Uplink TCHH (Receive Level Rank 5 and
Receive Quality Rank 1)
43
S4152C: Number of MRs on Uplink TCHH (Receive Level Rank 5 and
Receive Quality Rank 2)
44
S4153C: Number of MRs on Uplink TCHH (Receive Level Rank 5 and
Receive Quality Rank 3)
45
S4154C: Number of MRs on Uplink TCHH (Receive Level Rank 5 and
Receive Quality Rank 4)
46
S4155C: Number of MRs on Uplink TCHH (Receive Level Rank 5 and
Receive Quality Rank 5)
47
S4156C: Number of MRs on Uplink TCHH (Receive Level Rank 5 and
Receive Quality Rank 6)
48
S4157C: Number of MRs on Uplink TCHH (Receive Level Rank 5 and
Receive Quality Rank 7)
49
S4160C: Number of MRs on Uplink TCHH (Receive Level Rank 6 and
Receive Quality Rank 0)
50
S4161C: Number of MRs on Uplink TCHH (Receive Level Rank 6 and
Receive Quality Rank 1)
51
S4162C: Number of MRs on Uplink TCHH (Receive Level Rank 6 and
Receive Quality Rank 2)
52
S4163C: Number of MRs on Uplink TCHH (Receive Level Rank 6 and
Receive Quality Rank 3)
53
S4164C: Number of MRs on Uplink TCHH (Receive Level Rank 6 and
Receive Quality Rank 4)
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12-32
Number
Counter
54
S4165C: Number of MRs on Uplink TCHH (Receive Level Rank 6 and
Receive Quality Rank 5)
55
S4166C: Number of MRs on Uplink TCHH (Receive Level Rank 6 and
Receive Quality Rank 6)
56
S4167C: Number of MRs on Uplink TCHH (Receive Level Rank 6 and
Receive Quality Rank 7)
57
S4170C: Number of MRs on Uplink TCHH (Receive Level Rank 7 and
Receive Quality Rank 0)
58
S4171C: Number of MRs on Uplink TCHH (Receive Level Rank 7 and
Receive Quality Rank 1)
59
S4172C: Number of MRs on Uplink TCHH (Receive Level Rank 7 and
Receive Quality Rank 2)
60
S4173C: Number of MRs on Uplink TCHH (Receive Level Rank 7 and
Receive Quality Rank 3)
61
S4174C: Number of MRs on Uplink TCHH (Receive Level Rank 7 and
Receive Quality Rank 4)
62
S4175C: Number of MRs on Uplink TCHH (Receive Level Rank 7 and
Receive Quality Rank 5)
63
S4176C: Number of MRs on Uplink TCHH (Receive Level Rank 7 and
Receive Quality Rank 6)
64
S4177C: Number of MRs on Uplink TCHH (Receive Level Rank 7 and
Receive Quality Rank 7)
65
S4100D: Number of MRs on Downlink TCHH (Receive Level Rank 0 and
Receive Quality Rank 0)
66
S4101D: Number of MRs on Downlink TCHH (Receive Level Rank 0 and
Receive Quality Rank 1)
67
S4102D: Number of MRs on Downlink TCHH (Receive Level Rank 0 and
Receive Quality Rank 2)
68
S4103D: Number of MRs on Downlink TCHH (Receive Level Rank 0 and
Receive Quality Rank 3)
69
S4104D: Number of MRs on Downlink TCHH (Receive Level Rank 0 and
Receive Quality Rank 4)
70
S4105D: Number of MRs on Downlink TCHH (Receive Level Rank 0 and
Receive Quality Rank 5)
71
S4106D: Number of MRs on Downlink TCHH (Receive Level Rank 0 and
Receive Quality Rank 6)
72
S4107D: Number of MRs on Downlink TCHH (Receive Level Rank 0 and
Receive Quality Rank 7)
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
12 MR Measurement
Number
Counter
73
S4110D: Number of MRs on Downlink TCHH (Receive Level Rank 1 and
Receive Quality Rank 0)
74
S4111D: Number of MRs on Downlink TCHH (Receive Level Rank 1 and
Receive Quality Rank 1)
75
S4112D: Number of MRs on Downlink TCHH (Receive Level Rank 1 and
Receive Quality Rank 2)
76
S4113D: Number of MRs on Downlink TCHH (Receive Level Rank 1 and
Receive Quality Rank 3)
77
S4114D: Number of MRs on Downlink TCHH (Receive Level Rank 1 and
Receive Quality Rank 4)
78
S4115D: Number of MRs on Downlink TCHH (Receive Level Rank 1 and
Receive Quality Rank 5)
79
S4116D: Number of MRs on Downlink TCHH (Receive Level Rank 1 and
Receive Quality Rank 6)
80
S4117D: Number of MRs on Downlink TCHH (Receive Level Rank 1 and
Receive Quality Rank 7)
81
S4120D: Number of MRs on Downlink TCHH (Receive Level Rank 2 and
Receive Quality Rank 0)
82
S4121D: Number of MRs on Downlink TCHH (Receive Level Rank 2 and
Receive Quality Rank 1)
83
S4122D: Number of MRs on Downlink TCHH (Receive Level Rank 2 and
Receive Quality Rank 2)
84
S4123D: Number of MRs on Downlink TCHH (Receive Level Rank 2 and
Receive Quality Rank 3)
85
S4124D: Number of MRs on Downlink TCHH (Receive Level Rank 2 and
Receive Quality Rank 4)
86
S4125D: Number of MRs on Downlink TCHH (Receive Level Rank 2 and
Receive Quality Rank 5)
87
S4126D: Number of MRs on Downlink TCHH (Receive Level Rank 2 and
Receive Quality Rank 6)
88
S4127D: Number of MRs on Downlink TCHH (Receive Level Rank 2 and
Receive Quality Rank 7)
89
S4130D: Number of MRs on Downlink TCHH (Receive Level Rank 3 and
Receive Quality Rank 0)
90
S4131D: Number of MRs on Downlink TCHH (Receive Level Rank 3 and
Receive Quality Rank 1)
91
S4132D: Number of MRs on Downlink TCHH (Receive Level Rank 3 and
Receive Quality Rank 2)
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12 MR Measurement
12-34
Number
Counter
92
S4133D: Number of MRs on Downlink TCHH (Receive Level Rank 3 and
Receive Quality Rank 3)
93
S4134D: Number of MRs on Downlink TCHH (Receive Level Rank 3 and
Receive Quality Rank 4)
94
S4135D: Number of MRs on Downlink TCHH (Receive Level Rank 3 and
Receive Quality Rank 5)
95
S4136D: Number of MRs on Downlink TCHH (Receive Level Rank 3 and
Receive Quality Rank 6)
96
S4137D: Number of MRs on Downlink TCHH (Receive Level Rank 3 and
Receive Quality Rank 7)
97
S4140D: Number of MRs on Downlink TCHH (Receive Level Rank 4 and
Receive Quality Rank 0)
98
S4141D: Number of MRs on Downlink TCHH (Receive Level Rank 4 and
Receive Quality Rank 1)
99
S4142D: Number of MRs on Downlink TCHH (Receive Level Rank 4 and
Receive Quality Rank 2)
100
S4143D: Number of MRs on Downlink TCHH (Receive Level Rank 4 and
Receive Quality Rank 3)
101
S4144D: Number of MRs on Downlink TCHH (Receive Level Rank 4 and
Receive Quality Rank 4)
102
S4145D: Number of MRs on Downlink TCHH (Receive Level Rank 4 and
Receive Quality Rank 5)
103
S4146D: Number of MRs on Downlink TCHH (Receive Level Rank 4 and
Receive Quality Rank 6)
104
S4147D: Number of MRs on Downlink TCHH (Receive Level Rank 4 and
Receive Quality Rank 7)
105
S4150D: Number of MRs on Downlink TCHH (Receive Level Rank 5 and
Receive Quality Rank 0)
106
S4151D: Number of MRs on Downlink TCHH (Receive Level Rank 5 and
Receive Quality Rank 1)
107
S4152D: Number of MRs on Downlink TCHH (Receive Level Rank 5 and
Receive Quality Rank 2)
108
S4153D: Number of MRs on Downlink TCHH (Receive Level Rank 5 and
Receive Quality Rank 3)
109
S4154D: Number of MRs on Downlink TCHH (Receive Level Rank 5 and
Receive Quality Rank 4)
110
S4155D: Number of MRs on Downlink TCHH (Receive Level Rank 5 and
Receive Quality Rank 5)
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Performance Counter Reference
12 MR Measurement
Number
Counter
111
S4156D: Number of MRs on Downlink TCHH (Receive Level Rank 5 and
Receive Quality Rank 6)
112
S4157D: Number of MRs on Downlink TCHH (Receive Level Rank 5 and
Receive Quality Rank 7)
113
S4160D: Number of MRs on Downlink TCHH (Receive Level Rank 6 and
Receive Quality Rank 0)
114
S4161D: Number of MRs on Downlink TCHH (Receive Level Rank 6 and
Receive Quality Rank 1)
115
S4162D: Number of MRs on Downlink TCHH (Receive Level Rank 6 and
Receive Quality Rank 2)
116
S4163D: Number of MRs on Downlink TCHH (Receive Level Rank 6 and
Receive Quality Rank 3)
117
S4164D: Number of MRs on Downlink TCHH (Receive Level Rank 6 and
Receive Quality Rank 4)
118
S4165D: Number of MRs on Downlink TCHH (Receive Level Rank 6 and
Receive Quality Rank 5)
119
S4166D: Number of MRs on Downlink TCHH (Receive Level Rank 6 and
Receive Quality Rank 6)
120
S4167D: Number of MRs on Downlink TCHH (Receive Level Rank 6 and
Receive Quality Rank 7)
121
S4170D: Number of MRs on Downlink TCHH (Receive Level Rank 7 and
Receive Quality Rank 0)
122
S4171D: Number of MRs on Downlink TCHH (Receive Level Rank 7 and
Receive Quality Rank 1)
123
S4172D: Number of MRs on Downlink TCHH (Receive Level Rank 7 and
Receive Quality Rank 2)
124
S4173D: Number of MRs on Downlink TCHH (Receive Level Rank 7 and
Receive Quality Rank 3)
125
S4174D: Number of MRs on Downlink TCHH (Receive Level Rank 7 and
Receive Quality Rank 4)
126
S4175D: Number of MRs on Downlink TCHH (Receive Level Rank 7 and
Receive Quality Rank 5)
127
S4176D: Number of MRs on Downlink TCHH (Receive Level Rank 7 and
Receive Quality Rank 6)
128
S4177D: Number of MRs on Downlink TCHH (Receive Level Rank 7 and
Receive Quality Rank 7)
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12 MR Measurement
Meaning
The BSC measures these counters based on the following factors after receiving a valid MR
or a valid preprocessing MR:
z
TCHH uplink receive level rank (0–7)
z
TCHH uplink receive quality rank (0–7)
z
TCHH downlink receive level rank (0–7)
z
TCHH downlink receive quality rank (0–7)
Trigger Point
The BSC measures these counters based on the uplink or downlink receive level and the
uplink or downlink receive quality after receiving a valid MR or a valid preprocessing MR.
Formula
None.
12.8 Receive Quality Measurement per TRX
Counter
Receive Quality Measurement per TRX refers to the measurement of the mean receive level
rank and the mean receive quality rank on the TCH.
Table 12-24 lists the counters of Receive Quality Measurement per TRX.
Table 12-24 Counters of Receive Quality Measurement per TRX
12-36
Number
Counter
1
CS410A: Number of MRs on Uplink TCHF (Mean Receive Quality Rank 0)
2
CS411A: Number of MRs on Uplink TCHF (Mean Receive Quality Rank 1)
3
CS412A: Number of MRs on Uplink TCHF (Mean Receive Quality Rank 2)
4
CS413A: Number of MRs on Uplink TCHF (Mean Receive Quality Rank 3)
5
CS414A: Number of MRs on Uplink TCHF (Mean Receive Quality Rank 4)
6
CS415A: Number of MRs on Uplink TCHF (Mean Receive Quality Rank 5)
7
CS416A: Number of MRs on Uplink TCHF (Mean Receive Quality Rank 6)
8
CS417A: Number of MRs on Uplink TCHF (Mean Receive Quality Rank 7)
9
CS410B: Number of MRs on Downlink TCHF (Mean Receive Quality Rank
0)
10
CS411B: Number of MRs on Downlink TCHF (Mean Receive Quality Rank
1)
Huawei Technologies Proprietary
Issue 02 (2007-02-06)
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
12 MR Measurement
Number
Counter
11
CS412B: Number of MRs on Downlink TCHF (Mean Receive Quality Rank
2)
12
CS413B: Number of MRs on Downlink TCHF (Mean Receive Quality Rank
3)
13
CS414B: Number of MRs on Downlink TCHF (Mean Receive Quality Rank
4)
14
CS415B: Number of MRs on Downlink TCHF (Mean Receive Quality Rank
5)
15
CS416B: Number of MRs on Downlink TCHF (Mean Receive Quality Rank
6)
16
CS417B: Number of MRs on Downlink TCHF (Mean Receive Quality Rank
7)
17
CS410C: Number of MRs on Uplink TCHH (Mean Rank of Receive Quality
0)
18
CS411C: Number of MRs on Uplink TCHH (Mean Receive Quality Rank 1)
19
CS412C: Number of MRs on Uplink TCHH (Mean Receive Quality Rank 2)
20
CS413C: Number of MRs on Uplink TCHH (Mean Receive Quality Rank 3)
21
CS414C: Number of MRs on Uplink TCHH (Mean Receive Quality Rank 4)
22
CS415C: Number of MRs on Uplink TCHH (Mean Receive Quality Rank 5)
23
CS416C: Number of MRs on Uplink TCHH (Mean Receive Quality Rank 6)
24
CS417C: Number of MRs on Uplink TCHH (Mean Receive Quality Rank 7)
25
CS410D: Number of MRs on Downlink TCHH (Mean Receive Quality Rank
0)
26
CS411D: Number of MRs on Downlink TCHH (Mean Receive Quality Rank
1)
27
CS412D: Number of MRs on Downlink TCHH (Mean Receive Quality Rank
2)
28
CS413D: Number of MRs on Downlink TCHH (Mean Receive Quality Rank
3)
29
CS414D: Number of MRs on Downlink TCHH (Mean Receive Quality Rank
4)
30
CS415D: Number of MRs on Downlink TCHH (Mean Receive Quality Rank
5)
31
CS416D: Number of MRs on Downlink TCHH (Mean Receive Quality Rank
6)
32
CS417D: Number of MRs on Downlink TCHH (Mean Receive Quality Rank
7)
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Performance Counter Reference
12 MR Measurement
Meaning
The counters measure the number of MRs on the uplink and downlink TCHH when the mean
receive quality rank is from 0 to 7.
Trigger Point
None.
Formula
In the formulas of this section, the value range of N is 0–7.
Number of MRs on Uplink TCHF (Mean Receive Quality Rank N) =
Number of MRs on Uplink TCHF (Receive Level Rank 0 and Receive Quality Rank N+
Number of MRs on Uplink TCHF (Receive Level Rank 1 and Receive Quality Rank N +
Number of MRs on Uplink TCHF (Receive Level Rank 2 and Receive Quality Rank N +
Number of MRs on Uplink TCHF (Receive Level Rank 3 and Receive Quality Rank N +
Number of MRs on Uplink TCHF (Receive Level Rank 4 and Receive Quality Rank N +
Number of MRs on Uplink TCHF (Receive Level Rank 5 and Receive Quality Rank N +
Number of MRs on Uplink TCHF (Receive Level Rank 6 and Receive Quality Rank N +
Number of MRs on Uplink TCHF (Receive Level Rank 7 and Receive Quality Rank N
Number of MRs on Downlink TCHF (Mean Receive Quality Rank N) =
Number of MRs on Downlink TCHF (Receive Level Rank 0 and Receive Quality Rank N+
Number of MRs on Downlink TCHF (Receive Level Rank 1 and Receive Quality Rank N +
Number of MRs on Downlink TCHF (Receive Level Rank 2 and Receive Quality Rank N +
Number of MRs on Downlink TCHF (Receive Level Rank 3 and Receive Quality Rank N +
Number of MRs on Downlink TCHF (Receive Level Rank 4 and Receive Quality Rank N +
Number of MRs on Downlink TCHF (Receive Level Rank 5 and Receive Quality Rank N +
Number of MRs on Downlink TCHF (Receive Level Rank 6 and Receive Quality Rank N +
Number of MRs on Downlink TCHF (Receive Level Rank 7 and Receive Quality Rank N
Number of MRs on Uplink TCHH (Mean Rank of Receive Quality N)=
Number of MRs on Uplink TCHH (Receive Level Rank 0 and Receive Quality Rank N+
Number of MRs on Uplink TCHH (Receive Level Rank 1 and Receive Quality Rank N +
Number of MRs on Uplink TCHH (Receive Level Rank 2 and Receive Quality Rank N +
Number of MRs on Uplink TCHH (Receive Level Rank 3 and Receive Quality Rank N +
12-38
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Performance Counter Reference
12 MR Measurement
Number of MRs on Uplink TCHH (Receive Level Rank 4 and Receive Quality Rank N +
Number of MRs on Uplink TCHH (Receive Level Rank 5 and Receive Quality Rank N +
Number of MRs on Uplink TCHH (Receive Level Rank 6 and Receive Quality Rank N +
Number of MRs on Uplink TCHH (Receive Level Rank 7 and Receive Quality Rank N
Number of MRs on Downlink TCHH (Mean Receive Quality Rank N =
Number of MRs on Downlink TCHH (Receive Level Rank 0 and Receive Quality Rank N+
Number of MRs on Downlink TCHH (Receive Level Rank 1 and Receive Quality Rank N +
Number of MRs on Downlink TCHH (Receive Level Rank 2 and Receive Quality Rank N +
Number of MRs on Downlink TCHH (Receive Level Rank 3 and Receive Quality Rank N +
Number of MRs on Downlink TCHH (Receive Level Rank 4 and Receive Quality Rank N +
Number of MRs on Downlink TCHH (Receive Level Rank 5 and Receive Quality Rank N +
Number of MRs on Downlink TCHH (Receive Level Rank 6 and Receive Quality Rank N +
Number of MRs on Downlink TCHH (Receive Level Rank 7 and Receive Quality Rank N
12.9 Uplink-and-Downlink Balance Measurement per TRX
Counter
Proper power estimation during network planning is a prerequisite for normal operation of the
system. The uplink and downlink signals in the coverage area must be balanced.
z
If the uplink coverage is larger than the downlink coverage, the signals at the edge of the
cell are weak and easily "submerged" by the stronger signals from other cells.
z
If the downlink coverage is larger than the uplink coverage, the MS is forced to station at
the signals. The unlink signals are so weak that the voice quality is affected.
The balance is not absolute. You can judge whether the uplink and downlink signals are in
balance or not according to the MRs on the Abis interface.
The MR that the BSC receives contains the uplink receive level and the downlink receive
level.
The uplink and downlink balance level is determined by the following formula:
Downlink receive level – uplink receive level – 6
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For details, see Table 12-25.
Table 12-25 Mapping between the uplink/downlink balance rank and the receive level
Uplink-and-Downlink Balance
Rank
Downlink Receive Level – Uplink Receive
level – 6
1
ñ –15 dB
2
–14 dB, –13 dB, –12 dB, –11 dB, –10 dB
3
–9 dB, –8 dB, –7 dB, –6 dB
4
–5 dB, –4 dB, –3 dB
5
–2 dB, –1dB, 0 dB
6
0 dB
7
1 dB, 2 dB
8
3 dB, 4 dB, 5 dB
9
6 dB, 7 dB, 8 dB, 9 dB
10
10 dB, 11 dB, 12 dB, 13 dB, 14 dB
11
15 dB, 16 dB, 17 dB, 18 dB, 19 dB, 20 dB
If the measurement result shows that the uplink/downlink is frequently in balance level 1,
infer that the downlink loss is too large or the downlink transmit power is too weak.
If the measurement result shows that the uplink/downlink is frequently in balance level 11,
infer that the uplink loss is too large or the uplink transmit power is too weak. You can use the
results to locate faults in transferring channels such as the TRX and the antenna system.
Table 12-26 lists the counters of Uplink-and-Downlink Balance Measurement per TRX.
Table 12-26 Counters of Uplink-and-Downlink Balance Measurement per TRX
12-40
Number
Counter
1
S462A: Number of MRs (Uplink-and-Downlink Balance Level = 1)
2
S462B: Number of MRs (Uplink-and-Downlink Balance Level = 2)
3
S462C: Number of MRs (Uplink-and-Downlink Balance Level = 3)
4
S462D: Number of MRs (Uplink-and-Downlink Balance Level = 4)
5
S462E: Number of MRs (Uplink-and-Downlink Balance Level = 5)
6
S462F: Number of MRs (Uplink-and-Downlink Balance Level = 6)
7
S462G: Number of MRs (Uplink-and-Downlink Balance Level = 7)
8
S462H: Number of MRs (Uplink-and-Downlink Balance Level = 8)
9
S462I: Number of MRs (Uplink-and-Downlink Balance Level = 9)
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Number
Counter
10
S462J: Number of MRs (Uplink-and-Downlink Balance Level = 10)
11
S462K: Number of MRs (Uplink-and-Downlink Balance Level = 11)
Meaning
The BSC gets the uplink-and-downlink balance level from the valid MRs sent by the MS and
the valid preprocessing MRs sent by the BTS according to Table 12-25. Then the BSC
measures the number of MRs when the uplink-and-downlink balance level is from 1 to 11.
Trigger Point
The counters are measured when:
z
The BSC receives valid MRs from the MS and gets the uplink-and-downlink level (1–11)
from the MS according to Table 12-25.
z
The BSC receives valid preprocessing MRs from the BTS and gets the uplink-anddownlink level (1–11) from the MS according to Table 12-25.
Formula
None.
12.10 Number of MRs Based on TA per TRX
Counter
Number of MRs Based on TA per TRX refers to the measurement of the number of MRs that
the MS reports in a certain range of TA. The measurement suggests the traffic volume in
different distances between the MS and the BTS and helps with network maintenance and
optimization.
Table 12-27 lists the counters of Number of MRs based on TA per TRX.
Table 12-27 Counters of Number of MRs based on TA per TRX
Number
Counter
1
S4400A: Number of MRs (TA = 0)
2
S4401A: Number of MRs (TA = 1)
3
S4402A: Number of MRs (TA = 2)
4
S4403A: Number of MRs (TA = 3)
5
S4404A: Number of MRs (TA = 4)
6
S4405A: Number of MRs (TA = 5)
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12-42
Number
Counter
7
S4406A: Number of MRs (TA = 6)
8
S4407A: Number of MRs (TA = 7)
9
S4408A: Number of MRs (TA = 8)
10
S4409A: Number of MRs (TA = 9)
11
S4410A: Number of MRs (TA = 10)
12
S4411A: Number of MRs (TA = 11)
13
S4412A: Number of MRs (TA = 12)
14
S4413A: Number of MRs (TA = 13)
15
S4414A: Number of MRs (TA = 14)
16
S4415A: Number of MRs (TA = 15)
17
S4416A: Number of MRs (TA = 16)
18
S4417A: Number of MRs (TA = 17)
19
S4418A: Number of MRs (TA = 18)
20
S4419A: Number of MRs (TA = 19)
21
S4420A: Number of MRs (TA = 20)
22
S4421A: Number of MRs (TA = 21)
23
S4422A: Number of MRs (TA = 22)
24
S4423A: Number of MRs (TA = 23)
25
S4424A: Number of MRs (TA = 24)
26
S4425A: Number of MRs (TA = 25)
27
S4426A: Number of MRs (TA = 26)
28
S4427A: Number of MRs (TA = 27)
29
S4428A: Number of MRs (TA = 28)
30
S4429A: Number of MRs (TA = 29)
31
S4430A: Number of MRs (TA = 30 or 31)
32
S4432A: Number of MRs (TA = 32 or 33)
33
S4434A: Number of MRs (TA = 34 or 35)
34
S4436A: Number of MRs (TA = 36 or 37)
35
S4438A: Number of MRs (TA = 38 or 39)
36
S4440A: Number of MRs (TA = 40 to 44)
37
S4445A: Number of MRs (TA = 45 to 49)
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Number
Counter
38
S4450A: Number of MRs (TA = 50 to 54)
39
S4455A: Number of MRs (TA = 55 to 63)
40
S4463A: Number of MRs (TA greater than 63)
12 MR Measurement
Meaning
The counters measure the number of MRs when TA is from 0 to 219.
Trigger Point
The BSC measures the number of valid MRs and preprocessing MRs from the MS based on
the TA.
Formula
None.
12.11 Radio Link Failure Measurement per TRX
12.11.1 Overview of Radio Link Failure Measurement per TRX
Radio Link Failure Measurement per TRX refers to the measurement of level, quality, and TA
in the MR during call drops.
Table 12-28 lists the counters of Radio Link Failure Measurement per TRX.
Table 12-28 Counters of Radio Link Failure Measurement per TRX
Counter
Section
Uplink and Downlink Level During Radio Link Failure per TRX
12.11.2
Mean Uplink and Downlink Level During Radio Link Failure per TRX
12.11.3
Uplink and Downlink Quality During Radio Link Failure per TRX
12.11.4
Mean Uplink and Downlink Quality During Radio Link Failure per TRX
12.11.5
TA During Radio Link Failure per TRX
12.11.6
Mean TA During Radio Link Failure TRX
12.11.7
Number of Radio Link Failures per TRX
12.11.8
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12.11.2 Uplink and Downlink Level During Radio Link Failure
per TRX
Counter
Table 12-29 lists the counters of Uplink and Downlink Level During Radio Link Failure per
TRX.
Table 12-29 Counters of Uplink and Downlink Level During Radio Link Failure per TRX
Number
Counter
1
S3300D: Uplink Level During Radio Link Failure (SDCCH)
2
S3320D: Downlink Level During Radio Link Failure (SDCCH)
3
S3307D: Uplink Level During Radio Link Failure (TCHF)
4
S3327D: Downlink Level During Radio Link Failure (TCHF)
5
S3308D: Uplink Level During Radio Link Failure (TCHH)
6
S3328D: Downlink Level During Radio Link Failure (TCHH)
Meaning
The counters measure the uplink and downlink level on the SDCCHs, TCHFs, and TCHHs
during radio link failure.
Trigger Point
The counters are measured by adding the uplink and downlink level in the last valid MRs on
the SDCCH, TCHF, and TCHH before radio link failure.
Formula
None.
12.11.3 Mean Uplink and Downlink Level During Radio Link
Failure per TRX
Counter
Table 12-30 lists the counters of Mean Uplink and Downlink Level During Radio Link
Failure per TRX.
Table 12-30 Counters of Mean Uplink and Downlink Level During Radio Link Failure per TRX
12-44
Number
Counter
1
AS4300D: Mean Uplink Level During Radio Link Failure (SDCCH)
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Number
Counter
2
AS4320D: Mean Downlink Level During Radio Link Failure (SDCCH)
3
AS4307D: Mean Uplink Level During Radio Link Failure (TCHF)
4
AS4327D: Mean Downlink Level During Radio Link Failure (TCHF)
5
AS4308D: Mean Uplink Level During Radio Link Failure (TCHH)
6
AS4328D: Mean Downlink Level During Radio Link Failure (TCHH)
Meaning
This counter measures the mean uplink and downlink level on the SDCCH, TCHF, and TCHH
during radio link failure.
Trigger Point
None.
Formula
Mean Uplink Level During Radio Link Failure (SDCCH) = [Uplink Level During Radio Link
Failure (SDCCH)]/[Radio Link Failures (SDCCH)]
Mean Downlink Level During Radio Link Failure (SDCCH) = [Downlink Level During
Radio Link Failure (SDCCH)]/[ Radio Link Failures (SDCCH)]
Mean Uplink Level During Radio Link Failure (TCHF) = [Uplink Level During Radio Link
Failure (TCHF)]/[ Radio Link Failures (TCHF)]
Mean Downlink Level During Radio Link Failure (TCHF) = [Downlink Level During Radio
Link Failure (TCHF)]/[ Radio Link Failures (TCHF)]
Mean Uplink Level During Radio Link Failure (TCHH) = [Uplink Level During Radio Link
Failure (TCHH)]/[ Radio Link Failures (TCHH)]
Mean Downlink Level During Radio Link Failure (TCHH) = [Downlink Level During Radio
Link Failure (TCHH)]/[ Radio Link Failures (TCHH)]
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12 MR Measurement
12.11.4 Uplink and Downlink Quality During Radio Link Failure
per TRX
Counter
Table 12-31 lists the counters of Uplink and Downlink Quality During Radio Link Failure per
TRX.
Table 12-31 Counters of Uplink and Downlink Quality During Radio Link Failure per TRX
Number
Counter
1
S4310D: Uplink Quality During Radio Link Failure (SDCCH)
2
S4330D: Downlink Quality During Radio Link Failure (SDCCH)
3
S4317D: Uplink Quality During Radio Link Failure (TCHF)
4
S4337D: Downlink Quality During Radio Link Failure (TCHF)
5
S4318D: Uplink Quality During Radio Link Failure (TCHH)
6
S4338D: Downlink Quality During Radio Link Failure (TCHH)
Meaning
This counter measures the uplink and downlink quality on the SDCCH, TCHF, and TCHH
during radio link failure.
Trigger Point
The counters are measured by adding the uplink and downlink quality rank in the last valid
MRs on the SDCCH, TCHF, and TCHH before radio link failure.
Formula
None.
12-46
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12.11.5 Mean Uplink and Downlink Quality During Radio Link
Failure per TRX
Counter
Table 12-32 lists the counters of Mean Uplink and Downlink Quality During Radio Link
Failure per TRX.
Table 12-32 Counters of Mean Quality of Uplink and Downlink During Radio Link Failure per
TRX
Number
Counter
1
AS4310D: Mean Uplink Quality During Radio Link Failure (SDCCH)
2
AS4330D: Mean Downlink Quality During Radio Link Failure (SDCCH)
3
AS4317D: Mean Uplink Quality During Radio Link Failure (TCHF)
4
AS4337D: Mean Downlink Quality During Radio Link Failure (SDCCH and
TCHF)
5
AS4318D: Mean Uplink Quality During Radio Link Failure (TCHH)
6
AS4338D: Mean Downlink Quality During Radio Link Failure (SDCCH and
TCHH)
Meaning
This counter measures the mean quality of uplink and downlink on the SDCCH, TCHF, and
TCHH during radio link failure.
Trigger Point
None.
Formula
Mean Uplink Quality During Radio Link Failure (SDCCH) = [Uplink Quality During Radio
Link Failure (SDCCH)]/[Number of Radio Link Failures (SDCCH)]
Mean Downlink Quality During Radio Link Failure (SDCCH) = [Downlink Quality During
Radio Link Failure (SDCCH)]/[Number of Radio Link Failures (SDCCH)]
Mean Uplink Quality During Radio Link Failure (TCHF) = [Uplink Quality During Radio
Link Failure (TCHF)]/[Number of Radio Link Failures (TCHF)]
Mean Downlink Quality During Radio Link Failure (TCHF) = [Downlink Quality During
Radio Link Failure (TCHF)]/[Number of Radio Link Failures (TCHF)]
Mean Uplink Quality During Radio Link Failure (TCHH) = [Uplink Quality During Radio
Link Failure (TCHH)]/[ Number of Radio Link Failures (TCHH)]
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Mean Downlink Quality During Radio Link Failure (TCHH) = [Downlink Quality During
Radio Link Failure (TCHH)]/[ Number of Radio Link Failures (TCHH)]
12.11.6 TA During Radio Link Failure per TRX
Counter
Table 12-33 lists the counters of TA During Radio Link Failure per TRX.
Table 12-33 Counters of TA During Radio Link Failure per TRX
Number
Counter
1
S4340D: TA During Radio Link Failure (SDCCH)
2
S4347D: TA During Radio Link Failure (TCHF)
3
S4348D: TA During Radio Link Failure (TCHH)
Meaning
The counters measure the TA on the SDCCH, TCHF, and TCHH during radio link failure.
Trigger Point
The counters are measured by adding the TA in the last valid MRs on the SDCCH, TCHF, and
TCHH before radio link failure.
Formula
None.
12.11.7 Mean TA During Radio Link Failure per TRX
Counter
Table 12-34 lists the counters of Mean TA During Radio Link Failure per TRX.
Table 12-34 Counters of Mean TA During Radio Link Failure per TRX
12-48
Number
Counter
1
AS4340D: Mean TA During Radio Link Failure (SDCCH)
2
AS4347D: Mean TA During Radio Link Failure (TCHF)
3
AS4348D: Mean TA During Radio Link Failure (TCHH)
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Meaning
The counters measure the mean TA on the SDCCH, TCHF, and TCHH during radio link
failure.
Trigger Point
None.
Formula
Mean TA During Radio Link Failure (SDCCH) = [TA During Radio Link Failure
(SDCCH)]/[ Radio Link Failures (SDCCH)]
Mean TA During Radio Link Failure (TCHF) = [TA During Radio Link Failure
(TCHF)]/[ Radio Link Failures (TCHF)]
Mean TA During Radio Link Failure (TCHH)= [TA During Radio Link Failure
(TCHH)]/[ Radio Link Failures (TCHH)]
12.11.8 Sampled Radio Link Failures per TRX
Counter
Table 12-35 lists the counters of Sampled Radio Link Failures per TRX.
Table 12-35 Counters of Sampled Radio Link Failures per TRX
Number
Counter
1
S4350D: Radio Link Failures (SDCCH)
2
S4357D: Radio Link Failures (TCHF)
3
S4358D: Radio Link Failures (TCHH)
Meaning
The counters measure the total number of radio link failures on the SDCCH, TCHF, and
TCHH in a GP.
Trigger Point
The counters are measured when radio link failure occurs on the SDCCH, TCHF, and TCHH.
Formula
None.
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12 MR Measurement
12.12 Radio Link Failure Measurement based on TA per
TRX
Counter
Radio Link Failure Measurement based on TA per TRX refers to the measurement of radio
link failures based on TA. The measurement helps with network maintenance and
optimization.
Table 12-36 lists the counters of Radio Link Failure Measurement based on TA per TRX.
Table 12-36 Counters of Radio Link Failure Measurement based on TA per TRX
12-50
Number
Counter
1
S4400B: Radio Link Failures (TA = 0)
2
S4401B: Radio Link Failures (TA = 1)
3
S4402B: Radio Link Failures (TA = 2)
4
S4403B: Radio Link Failures (TA = 3)
5
S4404B: Radio Link Failures (TA = 4)
6
S4405B: Radio Link Failures (TA = 5)
7
S4406B: Radio Link Failures (TA = 6)
8
S4407B: Radio Link Failures (TA = 7)
9
S4408B: Radio Link Failures (TA = 8)
10
S4409B: Radio Link Failures (TA = 9)
11
S4410B: Radio Link Failures (TA = 10)
12
S4411B: Radio Link Failures (TA = 11)
13
S4412B: Radio Link Failures (TA = 12)
14
S4413B: Radio Link Failures (TA = 13)
15
S4414B: Radio Link Failures (TA = 14)
16
S4415B: Radio Link Failures (TA = 15)
17
S4416B: Radio Link Failures (TA = 16)
18
S4417B: Radio Link Failures (TA = 17)
19
S4418B: Radio Link Failures (TA = 18)
20
S4419B: Radio Link Failures (TA = 19)
21
S4420B: Radio Link Failures (TA = 20)
22
S4421B: Radio Link Failures (TA = 21)
23
S4422B: Radio Link Failures (TA = 22)
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Number
Counter
24
S4423B: Radio Link Failures (TA = 23)
25
S4424B: Radio Link Failures (TA = 24)
26
S4425B: Radio Link Failures (TA = 25)
27
S4426B: Radio Link Failures (TA = 26)
28
S4427B: Radio Link Failures (TA = 27)
29
S4428B: Radio Link Failures (TA = 28)
30
S4429B: Radio Link Failures (TA = 29)
31
S4430B: Radio Link Failures (TA = 30 or 31)
32
S4432B: Radio Link Failures (TA = 32 or 33)
33
S4434B: Radio Link Failures (TA = 34 or 35)
34
S4436B: Radio Link Failures (TA = 36 or 37)
35
S4438B: Radio Link Failures (TA = 38 or 39)
36
S4440B: Radio Link Failures (TA = 40 to 44)
37
S4445B: Radio Link Failures (TA = 45 to 49)
38
S4450B: Radio Link Failures (TA = 50 to 54)
39
S4455B: Radio Link Failures (TA = 55 to 63)
40
S4463B: Radio Link Failures (TA greater than 63)
12 MR Measurement
Meaning
The counters measure the number of MRs based on the TA during radio link failure.
Trigger Point
In a GP, the counters are measured based on the TA in the last valid MR during radio link
failure.
Formula
None.
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12 MR Measurement
12.13 RQI Measurement based on TA per TRX
12.13.1 Overview of RQI Measurement based on TA per TRX
Radio Quality Indication (RQI) is the reference for intra cell handovers. The BSC can perform
intra cell handover of AMR calls only when the MR contains the RQI.
RQI Measurement based on TA per TRX refers to the measurement of the RQI based on TA.
The measurement helps with network maintenance and optimization.
Table 12-37 lists the counters of RQI Measurement based on TA per TRX.
Table 12-37 Counters of RQI Measurement based on TA per TRX
Counter
Section
Sampled RQI based on TA per TRX
12.13.2
Analyzed RQI based on TA per TRX
12.13.3
12.13.2 Sampled RQI based on TA per TRX
Counter
Table 12-38 lists the counters of Sampled RQI based on TA per TRX.
Table 12-38 Counters of Sampled RQI based on TA per TRX
12-52
Number
Counter
1
S4400D: RQI (TA = 0)
2
S4401D: RQI (TA = 1)
3
S4402D: RQI (TA = 2)
4
S4403D: RQI (TA = 3)
5
S4404D: RQI (TA = 4)
6
S4405D: RQI (TA = 5)
7
S4406D: RQI (TA = 6)
8
S4407D: RQI (TA = 7)
9
S4408D: RQI (TA = 8)
10
S4409D: RQI (TA = 9)
11
S4410D: RQI (TA = 10)
12
S4411D: RQI (TA = 11)
13
S4412D: RQI (TA = 12)
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Number
Counter
14
S4413D: RQI (TA = 13)
15
S4414D: RQI (TA = 14)
16
S4415D: RQI (TA = 15)
17
S4416D: RQI (TA = 16)
18
S4417D: RQI (TA = 17)
19
S4418D: RQI (TA = 18)
20
S4419D: RQI (TA = 19)
21
S4420D: RQI (TA = 20)
22
S4421D: RQI (TA = 21)
23
S4422D: RQI (TA = 22)
24
S4423D: RQI (TA = 23)
25
S4424D: RQI (TA = 24)
26
S4425D: RQI (TA = 25)
27
S4426D: RQI (TA = 26)
28
S4427D: RQI (TA = 27)
29
S4428D: RQI (TA = 28)
30
S4429D: RQI (TA = 29)
31
S4430D: RQI (TA = 30 or 31)
32
S4432D: RQI (TA = 32 or 33)
33
S4434D: RQI (TA = 34 or 35)
34
S4436D: RQI (TA = 36 or 37)
35
S4438D: RQI (TA = 38 or 39)
36
S4440D: RQI (TA = 40 to 44)
37
S4445D: RQI (TA = 45 to 49)
38
S4450D: RQI (TA = 50 to 54)
39
S4455D: RQI (TA = 55 to 63)
40
S4463D: RQI (TA greater than 63)
41
S4400C: MRs with RQI (TA = 0)
42
S4401C: MRs with RQI (TA = 1)
43
S4402C: MRs with RQI (TA = 2)
44
S4403C: MRs with RQI (TA = 3)
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12 MR Measurement
12-54
Number
Counter
45
S4404C: MRs with RQI (TA = 4)
46
S4405C: MRs with RQI (TA = 5)
47
S4406C: MRs with RQI (TA = 6)
48
S4407C: MRs with RQI (TA = 7)
49
S4408C: MRs with RQI (TA = 8)
50
S4409C: MRs with RQI (TA = 9)
51
S4410C: MRs with RQI (TA = 10)
52
S4411C: MRs with RQI (TA = 11)
53
S4412C: MRs with RQI (TA = 12)
54
S4413C: MRs with RQI (TA = 13)
55
S4414C: MRs with RQI (TA = 14)
56
S4415C: MRs with RQI (TA = 15)
57
S4416C: MRs with RQI (TA = 16)
58
S4417C: MRs with RQI (TA = 17)
59
S4418C: MRs with RQI (TA = 18)
60
S4419C: MRs with RQI (TA = 19)
61
S4420C: MRs with RQI (TA = 20)
62
S4421C: MRs with RQI (TA = 21)
63
S4422C: MRs with RQI (TA = 22)
64
S4423C: MRs with RQI (TA = 23)
65
S4424C: MRs with RQI (TA = 24)
66
S4425C: MRs with RQI (TA = 25)
67
S4426C: MRs with RQI (TA = 26)
68
S4427C: MRs with RQI (TA = 27)
69
S4428C: MRs with RQI (TA = 28)
70
S4429C: MRs with RQI (TA = 29)
71
S4430C: MRs with RQI (TA = 30 or 31)
72
S4432C: MRs with RQI (TA = 32 or 33)
73
S4434C: MRs with RQI (TA = 34 or 35)
74
S4436C: MRs with RQI (TA = 36 or 37)
75
S4438C: MRs with RQI (TA = 38 or 39)
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Number
Counter
76
S4440C: MRs with RQI (TA = 40 to 44)
77
S4445C: MRs with RQI (TA = 45 to 49)
78
S4450C: MRs with RQI (TA = 50 to 54)
79
S4455C: MRs with RQI (TA = 55 to 63)
80
S4463C: MRs with RQI (TA greater than 63)
12 MR Measurement
Meaning
The MS reports MRs containing RQIs periodically during AMR calls. The counters measure
the RQI and the number of MRs containing RQI.
Trigger Point
The counters are measured by adding all the RQIs in the MRs when TA is x.
In a GP, each counter increases by 1 based on the TA in the MR that contains the RQI.
X is a value or a value range.
Formula
None.
12.13.3 Analyzed RQI based on TA per TRX
Counter
Table 12-39 lists the counters of Analyzed RQI based on TA per TRX.
Table 12-39 Counters of Analyzed RQI based on TA per TRX
Number
Counter
1
AS4400D: Mean RQI (TA = 0)
2
AS4401D: Mean RQI (TA = 1)
3
AS4402D: Mean RQI (TA = 2)
4
AS4403D: Mean RQI (TA = 3)
5
AS4404D: Mean RQI (TA = 4)
6
AS4405D: Mean RQI (TA = 5)
7
AS4406D: Mean RQI (TA = 6)
8
AS4407D: Mean RQI (TA = 7)
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12 MR Measurement
12-56
Number
Counter
9
AS4408D: Mean RQI (TA = 8)
10
AS4409D: Mean RQI (TA = 9)
11
AS4410D: Mean RQI (TA = 10)
12
AS4411D: Mean RQI (TA = 11)
13
AS4412D: Mean RQI (TA = 12)
14
AS4413D: Mean RQI (TA = 13)
15
AS4414D: Mean RQI (TA = 14)
16
AS4415D: Mean RQI (TA = 15)
17
AS4416D: Mean RQI (TA = 16)
18
AS4417D: Mean RQI (TA = 17)
19
AS4418D: Mean RQI (TA = 18)
20
AS4419D: Mean RQI (TA = 19)
21
AS4420D: Mean RQI (TA = 20)
22
AS4421D: Mean RQI (TA = 21)
23
AS4422D: Mean RQI (TA = 22)
24
AS4423D: Mean RQI (TA = 23)
25
AS4424D: Mean RQI (TA = 24)
26
AS4425D: Mean RQI (TA = 25)
27
AS4426D: Mean RQI (TA = 26)
28
AS4427D: Mean RQI (TA = 27)
29
AS4428D: Mean RQI (TA = 28)
30
AS4429D: Mean RQI (TA = 29)
31
AS4430D: Mean RQI (TA = 30 or 31)
32
AS4432D: Mean RQI (TA = 32 or 33)
33
AS4434D: Mean RQI (TA = 34 or 35)
34
AS4436D: Mean RQI (TA = 36 or 37)
35
AS4438D: Mean RQI (TA = 38 or 39)
36
AS4440D: Mean RQI (TA = 40 to 44)
37
AS4445D: Mean RQI (TA = 45 to 49)
38
AS4450D: Mean RQI (TA = 50 to 54)
39
AS4455D: Mean RQI (TA = 55 to 63)
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Number
Counter
40
AS4463D: Mean RQI (TA greater than 63)
12 MR Measurement
Meaning
The counters measure the mean RQI in the MRs based on TA.
Trigger Point
None.
Formula
Mean RQI (TA =X) = [RQI (TA = X)]/[ MRs with RQI (TA = X)].
X is a value or a value range.
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13
Channel Measurement
About This Chapter
The following table lists the sections of this chapter.
Section
Describes
13.1 Overview of Channel
Measurement
Introduces the functions and measurement units of
Channel Measurement.
13.2 Channel Configuration
Measurement per Cell
Describes the functions of the measurement unit and the
counters in this unit.
13.3 Channel Conversion
Measurement per Cell
Describes the functions of the measurement unit and the
counters in this unit.
13.4 Channel Busy Duration
Measurement per Cell
Describes the functions of the measurement unit and the
counters in this unit.
13.5 Measurement of
Maximum Busy Channels per
Cell
Describes the functions of the measurement unit and the
counters in this unit.
13.6 Channel State
Measurement per Cell
Describes the functions of the measurement unit and the
counters in this unit.
13.7 Channel Assignment
Request Measurement per Cell
Describes the functions of the measurement unit and the
counters in this unit.
13.8 Channel Assignment
Success Measurement per
TRX
Describes the functions of the measurement unit and the
counters in this unit.
13.9 Channel Assignment
Failure Measurement per Cell
Describes the functions of the measurement unit and the
counters in this unit.
13.10 Channel Assignment
Concentric Cell Measurement
per Cell
Describes the functions of the measurement unit and the
counters in this unit.
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13-2
Section
Describes
13.11 Channel Assignment
Queue Measurement per Cell
Describes the functions of the measurement unit and the
counters in this unit.
13.12 Channel Assignment
GPRS Measurement per Cell
Describes the functions of the measurement unit and the
counters in this unit.
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13.1 Overview of Channel Measurement
Channel Measurement is used to measure the counters related to the channels.
Table 13-1 lists the measurement units of Channel Measurement.
Table 13-1 Measurement units of Channel Measurement
Measurement Unit
Section
Channel Configuration Measurement per Cell
13.2
Channel Conversion Measurement per Cell
13.3
Channel Busy Duration Measurement per Cell
13.4
Measurement of Maximum Busy Channels per Cell
13.5
Channel State Measurement per Cell
13.6
Channel Assignment Request Measurement per Cell
13.7
Channel Assignment Success Measurement per TRX
13.8
Channel Assignment Failure Measurement per Cell
13.9
Channel Assignment Concentric Cell Measurement per Cell
13.10
Channel Assignment Queue Measurement per Cell
13.11
Channel Assignment GPRS Measurement per Cell
13.12
13.2 Channel Configuration Measurement per Cell
13.2.1 Overview
During operation, the BSC dynamically adjusts the resources such as TCHs, SDCCHs, and
PDCHs for optimal use of channels. At the same time, the system periodically provides the
statistics when the channel is busy, idle, or blocked. These data helps to obtain the information
about the system operation and about the service distribution.
Therefore, the BSC samples the information about the channel assignment every five seconds.
The number of the configured channels and the number of available channels can be obtained
during the trigger of a sampling.
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Table 13-2 lists the classification of the counters in the Channel Configuration Measurement
per Cell measurement unit.
Table 13-2 Classification of the counters in the Channel Configuration Measurement per Cell
measurement unit
Counter Classification
Section
Sampled Measurement of Initially Configured Channels
13.2.2
Analyzed Measurement of Dynamically Configured Channels
13.2.3
Analyzed Number of Available Channels
13.2.4
SDCCH Availability
13.2.5
TCH Availability
13.2.6
Analyzed Measurement of Initially Configured Channels
13.2.7
13.2.2 Sampled Measurement of Initially Configured Channels
Counter
Table 13-3 lists the counters in the Sampled Measurement of Initially Configured Channels
measurement unit.
Table 13-3 Counters in the Sampled Measurement of Initially Configured Channels measurement
unit
13-4
Number
Counter
1
R3000A: Number of Initially Configured Channels (SDCCH) (900/850 Cell)
2
R3000B: Number of Initially Configured Channels (SDCCH) (1800/1900
Cell)
3
R3007A: Number of Initially Configured Channels (TCHF) (900/850 Cell)
4
R3007B: Number of Initially Configured Channels (TCHF) (1800/1900 Cell)
5
R3008A: Number of Initially Configured Channels (TCHH) (900/850 Cell)
6
R3008B: Number of Initially Configured Channels (TCHH) (1800/1900 Cell)
7
R3001A: Number of Initially Configured Channels (Static PDCH) (900/850
Cell)
8
R3001B: Number of Initially Configured Channels (Static PDCH) (1800/1900
Cell)
9
R3002A: Number of Initially Configured Channels (Dynamic PDCH)
(900/850 Cell)
10
R3002B: Number of Initially Configured Channels (Dynamic PDCH)
(1800/1900 Cell)
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13 Channel Measurement
Number
Counter
11
R3005A: Number of Initially Configured Channels (Static EDGE) (900/850
Cell)
12
R3005B: Number of Initially Configured Channels (Static EDGE) (1800/1900
Cell)
13
R3006A: Number of Initially Configured Channels (Dynamic EDGE)
(900/850 Cell)
14
R3006B: Number of Initially Configured Channels (Dynamic EDGE)
(1800/1900 Cell)
15
R3009A: Number of Initially Configured Channels (CBCH) (900/850 Cell)
16
R3009B: Number of Initially Configured Channels (CBCH) (1800/1900 Cell)
Meaning
The R3000A: Number of Initially Configured Channels (SDCCH) (900/850 Cell) counter is
used to measure the number of the configured SDCCHs (excluding the SDCCHs obtained
from the dynamic adjustment of the TCHFs) in the 900/850M cell within the BSC at each
sampling point.
The R3000B: Number of Initially Configured Channels (SDCCH) (1800/1900 Cell) counter is
used to measure the number of the configured SDCCHs (excluding the SDCCHs obtained
from the dynamic adjustment of the TCHFs) in the DCS1800/PCS1900M cell within the BSC
at each sampling point.
The R3007A: Number of Initially Configured Channels (TCHF) (900/850 Cell) counter is
used to measure the number of the configured TCHFs (excluding the TCHFs obtained from
the dynamic adjustment of the dynamic PDCHs and from the dynamic adjustment of the
TCHHs) in the 900/850M cell within the BSC at each sampling point.
The R3007B: Number of Initially Configured Channels (TCHF) (1800/1900 Cell) counter is
used to measure the number of the configured TCHFs (excluding the TCHFs obtained from
the dynamic adjustment of the dynamic PDCHs and from the dynamic adjustment of the
TCHHs) in the DCS1800/PCS1900M cell within the BSC at each sampling point.
The R3008A: Number of Initially Configured Channels (TCHH) (900/850 Cell) counter is
used to measure the number of the configured TCHHs (excluding the TCHHs obtained from
the dynamic adjustment of the TCHFs) in the 900/850M cell within the BSC at each sampling
point.
The R3008B: Number of Initially Configured Channels (TCHH) (1800/1900 Cell) counter is
used to measure the number of the configured TCHHs (excluding the TCHHs obtained from
the dynamic adjustment of the TCHFs) in the DCS1800/PCS1900M cell within the BSC at
each sampling point.
The R3001A: Number of Initially Configured Channels (Static PDCH) (900/850 Cell) counter
is used to measure the number of the static PDCHs configured in the 900/850M cell within
the BSC at each sampling point.
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The R3001B: Number of Initially Configured Channels (Static PDCH) (1800/1900 Cell)
counter is used to measure the number of the static PDCHs configured in the
DCS1800/PCS1900M cell within the BSC at each sampling point.
The R3002A: Number of Initially Configured Channels (Dynamic PDCH) (900/850 Cell)
counter is used to measure the number of the dynamic PDCHs (including the dynamic PDCHs
that have been dynamically adjusted to TCHFs) configured in the 900/850M cell within the
BSC at each sampling point.
The R3002B: Number of Initially Configured Channels (Dynamic PDCH) (1800/1900 Cell)
counter is used to measure the number of the dynamic PDCHs (including the dynamic PDCHs
that have been dynamically adjusted to TCHFs) configured in the DCS1800/PCS1900M cell
within the BSC at each sampling point.
The R3005A: Number of Initially Configured Channels (Static EDGE) (900/850 Cell) counter
is used to measure the number of the static EDGE PDCHs configured in the 900/850M cell
within the BSC at each sampling point.
The R3005B: Number of Initially Configured Channels (Static EDGE) (1800/1900 Cell)
counter is used to measure the number of the static EDGE PDCHs configured in the
DCS1800/PCS1900M cell within the BSC at each sampling point.
The R3006A: Number of Initially Configured Channels (Dynamic EDGE) (900/850 Cell)
counter is used to measure the number of the dynamic EDGE PDCHs (including the dynamic
EDGE PDCHs that have been dynamically adjusted to TCHFs) configured in the 900/850M
cell within the BSC at each sampling point.
The R3006B: Number of Initially Configured Channels (Dynamic EDGE) (1800/1900 Cell)
counter is used to measure the number of the dynamic EDGE PDCHs (including the dynamic
EDGE PDCHs that have been dynamically adjusted to TCHFs) configured in the
DCS1800/PCS1900M cell within the BSC at each sampling point.
The cell broadcast channel (CBCH) forwards the cell broadcast messages from the cell
broadcast center (CBC) to the MS. For the areas where the cell broadcast is available, you
configure the CBCHs through the following channel portfolios in the radio channel
configuration table: BCCH+CBCH or SDCCH+CBCH.
The R3009A: Number of Initially Configured Channels (CBCH) (900/850 Cell) counter is
used to measure the number of the configured CBCHs in the 900/850M cell within the BSC at
each sampling point.
The R3009B: Number of Initially Configured Channels (CBCH) (1800/1900 Cell) counter is
used to measure the number of the configured CBCHs in the DCS1800/PCS1900M cell
within the BSC at each sampling point.
Trigger Point
The previous counters are measured at each sampling point.
Formula
None.
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13.2.3 Analyzed Measurement of Dynamically Configured
Channels
Counter
Table 13-4 lists the counters in the Analyzed Measurement of Dynamically Configured
Channels measurement unit.
Table 13-4 Counters in the Analyzed Measurement of Dynamically Configured Channels
measurement unit
Number
Counter
1
AR3010A: Mean Number of Dynamically Configured Channels (SDCCH)
(900/850 Cell)
2
AR3010B: Mean Number of Dynamically Configured Channels (SDCCH)
(1800/1900 Cell)
3
AR3017A: Mean Number of Dynamically Configured Channels (TCHF)
(900/850 Cell)
4
AR3017B: Mean Number of Dynamically Configured Channels (TCHF)
(1800/1900 Cell)
5
AR3018A: Mean Number of Dynamically Configured Channels (TCHH)
(900/850 Cell)
6
AR3018B: Mean Number of Dynamically Configured Channels (TCHH)
(1800/1900 Cell)
7
AR3011A: Mean Number of Dynamically Configured Channels (PDCH)
(900/850 Cell)
8
AR3011B: Mean Number of Dynamically Configured Channels (PDCH)
(1800/1900 Cell)
9
AR3015A: Mean Number of Dynamically Configured Channels (EDGE)
(900/850 Cell)
10
AR3015B: Mean Number of Dynamically Configured Channels (EDGE)
(1800/1900 Cell)
11
CR3010: Mean Number of Dynamically Configured Channels (SDCCH)
12
CR301B: Mean Number of Dynamically Configured Channels (TCH)
13
CR3017: Mean Number of Dynamically Configured Channels (TCHF)
14
CR3018: Mean Number of Dynamically Configured Channels (TCHH)
15
CR3011: Mean Number of Dynamically Configured Channels (PDCH)
16
CR3015: Mean Number of Dynamically Configured Channels (EDGE)
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Meaning
The AR3010A: Mean Number of Dynamically Configured Channels (SDCCH) (900/850 Cell)
counter is used to measure the mean number of the configured SDCCHs (including the
SDCCHs obtained from the dynamic adjustment of the TCHFs) in a 900/850M cell under the
BSC in a granularity period.
The AR3010B: Mean Number of Dynamically Configured Channels (SDCCH) (1800/1900
Cell) counter is used to measure the mean number of the configured SDCCHs (including the
SDCCHs obtained from the dynamic adjustment of the TCHFs) in a DCS1800/PCS1900M
cell under the BSC in a granularity period.
The AR3017A: Mean Number of Dynamically Configured Channels (TCHF) (900/850 Cell)
counter is used to measure the mean number of the configured TCHFs (including the TCHFs
obtained from the dynamic adjustment of the dynamic PDCHs and the TCHFs obtained from
the dynamic adjustment of the TCHHs) in a 900/850M cell under the BSC in a granularity
period.
The AR3017B: Mean Number of Dynamically Configured Channels (TCHF) (1800/1900 Cell)
counter is used to measure the mean number of the configured TCHFs (including the TCHFs
obtained from the dynamic adjustment of the dynamic PDCHs and the TCHFs obtained from
the dynamic adjustment of the TCHHs) in a DCS1800/PCS1900M cell under the BSC in a
granularity period.
The AR3018A: Mean Number of Dynamically Configured Channels (TCHH) (900/850 Cell)
counter is used to measure the mean number of the configured TCHHs (including the TCHHs
obtained from the dynamic adjustment of the TCHFs) in a 900/850M cell under the BSC in a
granularity period.
The AR3018B: Mean Number of Dynamically Configured Channels (TCHH) (1800/1900
Cell) counter is used to measure the mean number of the configured TCHHs (including the
TCHHs obtained from the dynamic adjustment of the TCHFs) in a DCS1800/PCS1900M cell
under the BSC in a granularity period.
The AR3011A: Mean Number of Dynamically Configured Channels (PDCH) (900/850 Cell)
counter is used to measure the mean number of the configured PDCHs (including the PDCHs
obtained from the dynamic adjustment of the dynamic PDCHs) in a 900/850M cell under the
BSC in a granularity period.
The AR3011B: Mean Number of Dynamically Configured Channels (PDCH) (1800/1900 Cell)
counter is used to measure the mean number of the configured PDCHs (including the PDCHs
obtained from the dynamic adjustment of the dynamic PDCHs) in a DCS1800/PCS1900M
cell under the BSC in a granularity period.
The AR3015A: Mean Number of Dynamically Configured Channels (EDGE) (900/850 Cell)
counter is used to measure the mean number of the EDGE PDCHs (including the EDGE
PDCHs obtained from the dynamic adjustment of the dynamic EDGE PDCHs) configured in
a 900/850M cell under the BSC in a granularity period.
The AR3015B: Mean Number of Dynamically Configured Channels (EDGE) (1800/1900 Cell)
counter is used to measure the mean number of the EDGE PDCHs (including the EDGE
PDCHs obtained from the dynamic adjustment of the dynamic EDGE PDCHs) configured in
a DCS1800/PCS1900M cell under the BSC in a granularity period.
The CR3010: Mean Number of Dynamically Configured Channels (SDCCH) counter is used
to measure the mean number of the configured SDCCHs (including the SDCCHs obtained
from the dynamic adjustment of the TCHFs) in the cells of all frequency bands under the BSC
in real time.
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The CR301B: Mean Number of Dynamically Configured Channels (TCH) counter is used to
measure the mean number of the configured TCHs (including the TCHs obtained from the
dynamic adjustment of the dynamic PDCHs) in the cells of all frequency bands under the
BSC in real time.
The CR3017: Mean Number of Dynamically Configured Channels (TCHF) counter is used to
measure the mean number of the configured TCHFs (including the TCHFs obtained from the
dynamic adjustment of the dynamic PDCHs and the TCHFs obtained from the dynamic
adjustment of the TCHHs) in the cells of all frequency bands under the BSC in real time.
The CR3018: Mean Number of Dynamically Configured Channels (TCHH) counter is used to
measure the mean number of the configured TCHHs (including the TCHHs obtained from the
dynamic adjustment of the TCHFs) in the cells of all frequency bands under the BSC in real
time.
The CR3011: Mean Number of Dynamically Configured Channels (PDCH) counter is used to
measure the mean number of the configured PDCHs (including the PDCHs obtained from the
dynamic adjustment of the dynamic PDCHs) in the cells of all frequency bands under the
BSC in real time.
The CR3015: Mean Number of Dynamically Configured Channels (EDGE) counter is used to
measure the mean number of the configured EDGE PDCHs (including the EDGE PDCHs
obtained from the dynamic adjustment of the dynamic EDGE PDCHs) in the cells of all
frequency bands under the BSC in real time.
Trigger Point
None.
Formula
Mean Number of Dynamically Configured Channels (SDCCH) (900/850 Cell) =
[Number of Dynamically Configured Channels (SDCCH) (900/850 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (SDCCH) (1800/1900 Cell) =
[Number of Dynamically Configured Channels (SDCCH) (1800/1900 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (TCHF) (900/850 Cell) =
[Number of Dynamically Configured Channels (TCHF) (900/850 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (TCHF) (1800/1900 Cell) =
[Number of Dynamically Configured Channels (TCHF) (1800/1900 Cell)]/
[Sampled Number of Configured Channels]
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Mean Number of Dynamically Configured Channels (TCHH) (900/850 Cell) =
[Number of Dynamically Configured Channels (TCHH) (900/850 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (TCHH) (1800/1900 Cell) =
[Number of Dynamically Configured Channels (TCHH) (1800/1900 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (PDCH) (900/850 Cell) =
[Number of Dynamically Configured Channels (PDCH) (900/850 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (PDCH) (1800/1900 Cell) =
[Number of Dynamically Configured Channels (PDCH) (1800/1900 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (EDGE) (900/850 Cell) =
[Number of Dynamically Configured Channels (EDGE) (900/850 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (EDGE) (1800/1900 Cell) =
[Number of Dynamically Configured Channels (EDGE) (1800/1900 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (SDCCH) =
[Mean Number of Dynamically Configured Channels (SDCCH) (900/850 Cell)] +
[Mean Number of Dynamically Configured Channels (SDCCH) (1800/1900 Cell)]
Mean Number of Available Channels (TCH) =
[Mean Number of Available Channels (TCHF)] +
[Mean Number of Available Channels (TCHH)]
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Mean Number of Available Channels (TCHF) =
[Mean Number of Available Channels (TCHF) (900/850 Cell)] +
[Mean Number of Available Channels (TCHF) (1800/1900 Cell)]
Mean Number of Available Channels (TCHH) =
[Mean Number of Available Channels (TCHH) (900/850 Cell)] +
[Mean Number of Available Channels (TCHH) (1800/1900 Cell)]
Mean Number of Available Channels (PDCH) =
[Mean Number of Available Channels (PDCH) (900/850 Cell)] +
[Mean Number of Available Channels (PDCH) (1800/1900 Cell)]
Mean Number of Available Channels (EDGE) =
[Mean Number of Available Channels (EDGE) (900/850 Cell)] +
[Mean Number of Available Channels (EDGE) (1800/1900 Cell)]
Mean Number of Dynamically Configured Channels (SDCCH) (900/850 Cell) =
[Number of Dynamically Configured Channels (SDCCH) (900/850 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (SDCCH) (1800/1900 Cell) =
[Number of Dynamically Configured Channels (SDCCH) (1800/1900 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (TCHF) (900/850 Cell) =
[Number of Dynamically Configured Channels (TCHF) (900/850 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (TCHF) (1800/1900 Cell) =
[Number of Dynamically Configured Channels (TCHF) (1800/1900 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (TCHH) (900/850 Cell) =
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[Number of Dynamically Configured Channels (TCHH) (900/850 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (TCHH) (1800/1900 Cell) =
[Number of Dynamically Configured Channels (TCHH) (1800/1900 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (PDCH) (900/850 Cell) =
[Number of Dynamically Configured Channels (PDCH) (900/850 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (PDCH) (1800/1900 Cell) =
[Number of Dynamically Configured Channels (PDCH) (1800/1900 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (EDGE) (900/850 Cell) =
[Number of Dynamically Configured Channels (EDGE) (900/850 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (EDGE) (1800/1900 Cell) =
[Number of Dynamically Configured Channels (EDGE) (1800/1900 Cell)]/
[Sampled Number of Configured Channels]
13.2.4 Analyzed Measurement of Available Channels
Counter
Table 13-5 lists the counters in the Analyzed Measurement of Available Channels
measurement unit.
Table 13-5 Counters in the Analyzed Measurement of Available Channels measurement unit
13-12
Number
Counter
1
AR3020A: Mean Number of Available Channels (SDCCH) (900/850 Cell)
2
AR3020B: Mean Number of Available Channels (SDCCH) (1800/1900 Cell)
3
AR3027A: Mean Number of Available Channels (TCHF) (900/850 Cell)
4
AR3027B: Mean Number of Available Channels (TCHF) (1800/1900 Cell)
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Number
Counter
5
AR3028A: Mean Number of Available Channels (TCHH) (900/850 Cell)
6
AR3028B: Mean Number of Available Channels (TCHH) (1800/1900 Cell)
7
AR3021A: Mean Number of Available Channels (PDCH) (900/850 Cell)
8
AR3021B: Mean Number of Available Channels (PDCH) (1800/1900 Cell)
9
AR3025A: Mean Number of Available Channels (EDGE) (900/850 Cell)
10
AR3025B: Mean Number of Available Channels (EDGE) (1800/1900 Cell)
11
AR3023A: Mean Number of Available Channels (TCHs Converted from
Dynamic PDCHs) (900/850 Cell)
12
AR3023B: Mean Number of Available Channels (TCHs Converted from
Dynamic PDCHs) (1800/1900 Cell)
13
AR3024A: Mean Number of Available Channels (PDCHs Converted from
Dynamic PDCHs) (900/850 Cell)
14
AR3024B: Mean Number of Available Channels (PDCHs Converted from
Dynamic PDCHs) (1800/1900 Cell)
15
CR3020: Mean Number of Available Channels (SDCCH)
16
CR302B: Mean Number of Available Channels (TCH)
17
CR3027: Mean Number of Available Channels (TCHF)
18
CR3028: Mean Number of Available Channels (TCHH)
19
CR3021: Mean Number of Available Channels (PDCH)
20
CR3025: Mean Number of Available Channels (EDGE)
21
CR3023: Mean Number of Available Channels (TCHs Converted from
Dynamic PDCHs)
22
CR3024: Mean Number of Available Channels (PDCHs Converted from
Dynamic PDCHs)
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Meaning
The AR3020A: Mean Number of Available Channels (SDCCH) (900/850 Cell) counter is
used to measure the mean number of channels in a cell on the 900/850M band under the BSC
in a granularity period. The channels must meet the following requirements:
z
The channel type is SDCCH8, SDCCH+CBCH, BCCH+BCCH, or BCCH+CBCH.
z
The channels are available.
The AR3020B: Mean Number of Available Channels (SDCCH) (1800/1900 Cell) counter is
used to measure the mean number of channels in a cell on the DCS1800/PCS1900M band
under the BSC in a granularity period. The channels must meet the following requirements:
z
The channel type is SDCCH8, SDCCH+CBCH, BCCH+BCCH, or BCCH+CBCH.
z
The channels are available.
The AR3027A: Mean Number of Available Channels (TCHF) (900/850 Cell) counter is used
to measure the mean number of available TCHFs in a 900/850M cell under the BSC in a
granularity period.
The AR3027B: Mean Number of Available Channels (TCHF) (1800/1900 Cell) counter is
used to measure the mean number of available TCHFs in a DCS1800/PCS1900M cell under
the BSC in a granularity period.
The AR3028A: Mean Number of Available Channels (TCHH) (900/850 Cell) counter is used
to measure the mean number of available TCHHs in a 900/850M cell under the BSC in a
granularity period.
The AR3028B: Mean Number of Available Channels (TCHH) (1800/1900 Cell) counter is
used to measure the mean number of available TCHHs in a DCS1800/PCS1900M cell under
the BSC in a granularity period.
The AR3021A: Mean Number of Available Channels (PDCH) (900/850 Cell) counter is used
to measure the mean number of channels in a cell on the 900/850M band under the BSC in a
granularity period. The channels must meet the following requirements:
z
The channel type is PDTCH, PBCCH+ PDTCH, or PCCCH+ PDTCH.
z
The TRX carrying the channels is EDGE-capable.
z
The channels are available.
The AR3021B: Mean Number of Available Channels (PDCH) (1800/1900 Cell) counter is
used to measure the mean number of channels in a cell on the DCS1800/PCS1900M band
under the BSC in a granularity period. The channels must meet the following requirements:
z
The channel type is PDTCH, PBCCH+ PDTCH, or PCCCH+ PDTCH.
z
The TRX carrying the channels is EDGE-capable.
z
The channels are available.
The AR3025A: Mean Number of Available Channels (EDGE) (900/850 Cell) counter is used
to measure the mean number of channels in a cell on the 900/850M band under the BSC in a
granularity period. The channels must meet the following requirements:
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z
The channel type is PDTCH, PBCCH+ PDTCH, or PCCCH+ PDTCH.
z
The TRX carrying the channels is EDGE-capable.
z
The channels are available.
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The AR3025B: Mean Number of Available Channels (EDGE) (1800/1900 Cell) counter is
used to measure the mean number of channels in a cell on the DCS1800/PCS1900M band
under the BSC in a granularity period. The channels must meet the following requirements:
z
The channel type is PDTCH, PBCCH+ PDTCH, or PCCCH+ PDTCH.
z
The TRX carrying the channels is EDGE-capable.
z
The channels are available.
The AR3023A: Mean Number of Available Channels (TCHs Converted from Dynamic
PDCHs) (900/850 Cell) counter is used to measure the mean number of available TCHFs
converted from dynamic PDCHs in a 900/850M cell under the BSC in a granularity period.
The AR3023B: Mean Number of Available Channels (TCHs Converted from Dynamic
PDCHs) (1800/1900 Cell) counter is used to measure the mean number of available TCHFs
converted from dynamic PDCHs in a DCS1800/PCS1900M cell under the BSC in a
granularity period.
The AR3024A: Mean Number of Available Channels (PDCHs Converted from Dynamic
PDCHs) (900/850 Cell) counter is used to measure the mean number of channels in a cell on
the 900/850M band under the BSC in a granularity period. The channels must meet the
following requirements:
z
The channel type is PDTCH.
z
The configuration type is dynamic PDCH.
z
The channels are available.
The AR3024B: Mean Number of Available Channels (PDCHs Converted from Dynamic
PDCHs) (1800/1900 Cell) counter is used to measure the mean number of channels in a cell
on the DCS1800/PCS1900M band under the BSC in a granularity period. The channels must
meet the following requirements:
z
The channel type is PDTCH.
z
The configuration type is dynamic PDCH.
z
The channels are available.
The CR3020: Number of Available Channels (SDCCH) counter is used to measure the
number of channels in the cells on all the frequency bands under the BSC in a granularity
period in real time. The channels must meet the following requirements:
z
The channel type is SDCCH8, SDCCH+CBCH, BCCH+BCCH, or BCCH+CBCH.
z
The channels are available.
The CR3027: Number of Available Channels (TCHF) counter is used to measure the number
of the available TCHFs in the cells of all frequency bands under the BSC in real time.
The CR3028: Number of Available Channels (TCHH) counter is used to measure the number
of the available TCHHs in the cells of all frequency bands under the BSC in real time.
The CR3021: Number of Available Channels (PDCH) counter is used to measure the number
of channels in the cells on all the frequency bands under the BSC in a granularity period in
real time. The channels must meet the following requirements:
z
The channel type is PDTCH, PBCCH+PDTCH, or PCCCH+PDTCH.
z
The channels are available.
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The CR3025: Number of Available Channels (EDGE) counter is used to measure the number
of channels in the cells on all frequency bands under the BSC in real time. The channels must
meet the following requirements:
z
The channel type is PDTCH, PBCCH+ PDTCH, or PCCCH+ PDTCH.
z
The TRX carrying the channels is EDGE-capable.
z
The channels are available.
The CR3023: Number of Available Channels (TCHs Converted from Dynamic PDCHs)
counter is used to measure the number of the available TCHFs converted from dynamic
PDCHs in the cells of all frequency bands under the BSC in real time.
The CR3024: Number of Available Channels (PDCHs Converted from Dynamic PDCHs)
counter is used to measure the number of channels in the cells on all frequency bands under
the BSC in real time. The channels must meet the following requirements:
z
The channel type is PDTCH.
z
The configuration type is dynamic PDCH.
z
The channels are available.
Trigger Point
None.
Formula
Mean Number of Available Channels (SDCCH) (900/850 Cell) =
[Number of Available Channels (SDCCH) (900/850 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Available Channels (SDCCH) (1800/1900 Cell) =
[Number of Available Channels (SDCCH) (1800/1900 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Available Channels (TCHF) (900/850 Cell) =
[Number of Available Channels (TCHF) (900/850 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Available Channels (TCHF) (1800/1900 Cell) =
[Number of Available Channels (TCHF) (1800/1900 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Available Channels (TCHH) (900/850 Cell) =
[Number of Available Channels (TCHH) (900/850 Cell)]/
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[Sampled Number of Configured Channels]
Mean Number of Available Channels (TCHH) (1800/1900 Cell) =
[Number of Available Channels (TCHH) (1800/1900 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Available Channels (PDCH) (900/850 Cell) =
[Number of Available Channels (PDCH) (900/850 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Available Channels (PDCH) (1800/1900 Cell) =
[Number of Available Channels (PDCH) (1800/1900 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Available Channels (EDGE) (900/850 Cell) =
[Number of Available Channels (EDGE) (900/850 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Available Channels (EDGE) (1800/1900 Cell) =
[Number of Available Channels (EDGE) (1800/1900 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Available Channels (TCHs Converted from Dynamic PDCHs) (900/850 Cell)
=
[Number of Available Channels (TCHs Converted from Dynamic PDCHs) (900/850
Cell)]/[Sampled Number of Configured Channels]
Mean Number of Available Channels (TCHs Converted from Dynamic PDCHs) (1800/1900
Cell) =
[Number of Available Channels (TCHs Converted from Dynamic PDCHs) (1800/1900
Cell)]/[Sampled Number of Configured Channels]
Mean Number of Available Channels (PDCHs Converted from Dynamic PDCHs) (900/850
Cell) =
[Number of Available Channels (PDCHs Converted from Dynamic PDCHs) (900/850
Cell)]/[Sampled Number of Configured Channels]
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Mean Number of Available Channels (PDCHs Converted from Dynamic PDCHs) (1800/1900
Cell) =
[Number of Available Channels (PDCHs Converted from Dynamic PDCHs) (1800/1900
Cell)]/[Sampled Number of Configured Channels]
Mean Number of Available Channels (SDCCH) =
[Mean Number of Available Channels (SDCCH) (900/850 Cell)] +
[Mean Number of Available Channels (SDCCH) (1800/1900 Cell)]
Mean Number of Available Channels (TCH) =
[Mean Number of Available Channels (TCHF)] +
[Mean Number of Available Channels (TCHH)]
Mean Number of Available Channels (TCHF) =
[Mean Number of Available Channels (TCHF) (900/850 Cell)] +
[Mean Number of Available Channels (TCHF) (1800/1900 Cell)]
Mean Number of Available Channels (TCHH) =
[Mean Number of Available Channels (TCHH) (900/850 Cell)] +
[Mean Number of Available Channels (TCHH) (1800/1900 Cell)]
Mean Number of Available Channels (PDCH) =
[Mean Number of Available Channels (PDCH) (900/850 Cell)] +
[Mean Number of Available Channels (PDCH) (1800/1900 Cell)]
Mean Number of Available Channels (EDGE) =
[Mean Number of Available Channels (EDGE) (900/850 Cell)] +
[Mean Number of Available Channels (EDGE) (1800/1900 Cell)]
Mean Number of Available Channels (TCHs Converted from Dynamic PDCHs) =
[Mean Number of Available Channels (TCHs Converted from Dynamic PDCHs) (900/850
Cell)] +
[Mean Number of Available Channels (TCHs Converted from Dynamic PDCHs) (1800/1900
Cell)]
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Mean Number of Available Channels (PDCHs Converted from Dynamic PDCHs) =
[Mean Number of Available Channels (PDCHs Converted from Dynamic PDCHs) (900/850
Cell)] +
[Mean Number of Available Channels (PDCHs Converted from Dynamic PDCHs)
(1800/1900 Cell)]
13.2.5 SDCCH Availability
Counter
RR300: SDCCH Availability
Meaning
The RR300: SDCCH Availability counter is used to measure the percentage of the number of
the available SDCCHs to the number of the configured SDCCHs.
Trigger Point
None.
Formula
SDCCH Availability =
([Mean Number of Available Channels (SDCCH) (900/850 Cell)]+ [Mean Number of
Available Channels (SDCCH) (1800/1900 Cell)])*{100}/
([Mean Number of Dynamically Configured Channels (SDCCH) (900/850 Cell)]+ [Mean
Number of Dynamically Configured Channels (SDCCH) (1800/1900 Cell)])
13.2.6 TCH Availability
Counter
RR307: TCH Availability
Meaning
The RR307: TCH Availability counter is used to measure the percentage of the number of the
available TCHs to the number of the configured TCHs.
Trigger Point
None.
Formula
TCH Availability =
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([Mean Number of Available Channels (TCHF) (900/850 Cell)]+ [Mean Number of Available
Channels (TCHF) (1800/1900 Cell)]+ [Mean Number of Available Channels (TCHH)
(900/850 Cell)]+ [Mean Number of Available Channels (TCHH) (1800/1900 Cell)])*{100}/
([Mean Number of Dynamically Configured Channels (TCHF) (900/850 Cell)]+ [Mean
Number of Dynamically Configured Channels (TCHF) (1800/1900 Cell)]+ [Mean Number of
Dynamically Configured Channels (TCHH) (900/850 Cell)]+ [Mean Number of Dynamically
Configured Channels (TCHH) (1800/1900 Cell)])
13.2.7 Analyzed Measurement of Initially Configured Channels
Counter
Table 13-6 lists the counters in the Analyzed Measurement of Initially Configured Channels
measurement unit.
Table 13-6 Counters in the Analyzed Measurement of Initially Configured Channels measurement
unit
Number
Counter
1
CR3000: Number of Initially Configured Channels (SDCCH)
2
CR300B: Number of Initially Configured Channels (TCH)
3
CR3007: Number of Initially Configured Channels (TCHF)
4
CR3008: Number of Initially Configured Channels (TCHH)
5
CR3001: Number of Initially Configured Channels (Static PDCH)
6
CR3002: Number of Initially Configured Channels (Dynamic PDCH)
7
CR3005: Number of Initially Configured Channels (Static EDGE)
8
CR3006: Number of Initially Configured Channels (Dynamic EDGE)
9
CR3009: Number of Initially Configured Channels (CBCH)
Meaning
The CR3000: Number of Initially Configured Channels (SDCCH) counter is used to measure
the number of the configured SDCCHs (excluding the SDCCHs obtained from the dynamic
adjustment of the TCHFs) in the cells of all frequency bands within the BSC at each sampling
point.
The CR300B: Number of Initially Configured Channels (TCH) counter is used to measure the
configured TCHs (excluding the TCHs obtained from the dynamic adjustment of the dynamic
PDCHs) in the cells of all frequency bands under the BSC at each sampling point.
The CR3007: Number of Initially Configured Channels (TCHF) counter is used to measure
the number of configured TCHFs (excluding the TCHFs obtained from the dynamic
adjustment of the dynamic PDCHs and excluding the TCHFs obtained from the dynamic
adjustment of the TCHHs) in the cells of all frequency bands under the BSC at each sampling
point.
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The CR3008: Number of Initially Configured Channels (TCHH) counter is used to measure
the number of the configured TCHHs (excluding the TCHHs obtained from the dynamic
adjustment of the TCHFs) in the cells of all frequency bands under the BSC at each sampling
point.
The CR3001: Number of Initially Configured Channels (Static PDCH) counter is used to
measure the number of configured TCHHs (excluding the TCHHs obtained from the dynamic
adjustment of the TCHFs) in the cells of all frequency bands under the BSC at each sampling
point.
The CR3002: Number of Initially Configured Channels (Dynamic PDCH) counter is used to
measure the number of the dynamic PDCHs (including the dynamic PDCHs that have been
dynamically adjusted to TCHFs) configured in the cells of all frequency bands under the BSC
at each sampling point.
The CR3005: Number of Initially Configured Channels (Static EDGE) counter is used to
measure the number of the static EDGE PDCHs configured in the cells of all frequency bands
under the BSC at each sampling point.
The CR3006: Number of Initially Configured Channels (Dynamic EDGE) counter is used to
measure the number of the dynamic EDGE PDCHs (including the dynamic EDGE PDCHs
that have been dynamically adjusted to TCHFs) configured in the cells of all frequency bands
under the BSC at each sampling point.
The CR3009: Number of Initially Configured Channels (CBCH) counter is used to measure
the number of the configured CBCHs in the cells of all frequency bands under the BSC at
each sampling point.
Trigger Point
None.
Formula
Number of Initially Configured Channels (SDCCH) =
[Number of Initially Configured Channels (SDCCH) (900/850 Cell)] +
[Number of Initially Configured Channels (SDCCH) (1800/1900 Cell)]
Number of Initially Configured Channels (TCH) =
[Number of Initially Configured Channels (TCHF)] +
[Number of Initially Configured Channels (TCHH)]
Number of Initially Configured Channels (TCHF) =
[Number of Initially Configured Channels (TCHF) (900/850 Cell)] +
[Number of Initially Configured Channels (TCHF) (1800/1900 Cell)]
Number of Initially Configured Channels (TCHH) =
[Number of Initially Configured Channels (TCHH) (900/850 Cell)] +
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[Number of Initially Configured Channels (TCHH) (1800/1900 Cell)]
Number of Initially Configured Channels (Static PDCH) =
[Number of Initially Configured Channels (Static PDCH) (900/850 Cell)] +
[Number of Initially Configured Channels (Static PDCH) (1800/1900 Cell)]
Number of Initially Configured Channels (Dynamic PDCH) =
[Number of Initially Configured Channels (Dynamic PDCH) (900/850 Cell)] +
[Number of Initially Configured Channels (Dynamic PDCH) (1800/1900 Cell)]
Number of Initially Configured Channels (Static EDGE) =
[Number of Initially Configured Channels (Static EDGE) (900/850 Cell)] +
[Number of Initially Configured Channels (Static EDGE) (1800/1900 Cell)]
Number of Initially Configured Channels (Dynamic EDGE) =
[Number of Initially Configured Channels (Dynamic EDGE) (900/850 Cell)] +
[Number of Initially Configured Channels (Dynamic EDGE) (1800/1900 Cell)]
Number of Initially Configured Channels (CBCH) =
[Number of Initially Configured Channels (CBCH) (900/850 Cell)] +
[Number of Initially Configured Channels (CBCH) (1800/1900 Cell)]
13.3 Channel Conversion Measurement per Cell
13.3.1 Overview
For the optimum assignment of the TCHs and the SDCCHs, the system supports the
conversion between full-rate TCHs (TCHFs) and half-rate TCHs (TCHHs) and the conversion
between TCHs and SDCCHs in certain conditions.
The Channel Conversion Measurement per Cell measurement unit is used to measure the
number of the conversion requests and the number of the successful conversions among the
previous channels.
The counters in the measurement unit reflect the implementation status of the channel
conversion procedure and the actual usage of the channel resources.
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Table 13-7 lists the counters in the Channel Conversion Measurement per Cell measurement
unit.
Table 13-7 Counters in the Channel Conversion Measurement per Cell measurement unit
Number
Counter
1
R3505A: Channel Conversion Requests (TCHF-TCHH)
2
R3525A: Successful Channel Conversions (TCHF-TCHH)
3
R3505B: Channel Conversion Requests (TCHH-TCHF)
4
R3525B: Successful Channel Conversions (TCHH-TCHF)
5
R3516A: Number of Channel Conversions (TCH-SDCCH)
6
R3516B: Number of Channel Conversions (SDCCH-TCH)
13.3.2 Channel Conversion Requests (TCHF-TCHH)
Counter
R3505A: Channel Conversion Requests (TCHF-TCHH)
Meaning
Because the number of the initially configured TCHFs and TCHHs cannot meet the actual
traffic requirements, the BSC enables the TCHFs to be adjusted to TCHHs in certain
conditions. The initially configured dynamic PDCHs are not involved in the adjustment of
TCHHs.
In certain conditions, the initially configured TCHFs can be adjusted to TCHHs and the
corresponding TCHHs can be adjusted to TCHFs.
The trigger conditions of the adjustment from TCHFs to TCHHs during channel assignment are as
follows:
z
The system allows the dynamic data adjustment.
z
The requested type of channels is TCHH, but there is no qualified TCHH available.
z
There is qualified idle TCHF.
The adjustment procedure is as follows:
Select a TCHF available for adjustment. For concentric cells, select the idle channels on the TRXs in the
underlaid subcell as adjustable channels. If there are no channels available for adjustment, the
adjustment fails.
Convert the channel type and update the channel resources. Then perform configurations on the channels
under the BTS. When the conversion of the channel type is complete, the BTS sends a status change
report to the BSC.
If the channel is available, the idle TCHH converted by the BSC can be used for channel assignment.
The channel adjustment is complete and a TCHF is adjusted to two TCHHs.
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Trigger Point
Before channel assignment, this counter is measured if the adjustment conditions are met and
the adjustment from TCHFs to TCHHs is triggered.
Formula
None.
13.3.3 Successful Channel Conversions (TCHF-TCHH)
Counter
R3525A: Successful Channel Conversions (TCHF-TCHH)
Meaning
Because the number of the initially configured TCHFs and TCHHs cannot meet the actual
traffic requirements, the BSC enables the TCHFs to be adjusted to TCHHs in certain
conditions. The initially configured dynamic PDCHs are not involved in the adjustment of
TCHHs.
In certain conditions, the initially configured TCHFs can be adjusted to TCHHs and the
corresponding TCHHs can be adjusted to TCHFs.
The trigger conditions of the adjustment from TCHFs to TCHHs during channel assignment are as
follows:
z
The system allows the dynamic data adjustment.
z
The requested type of channels is TCHH, but there is no qualified TCHH available.
z
There is qualified idle TCHF.
The adjustment procedure is as follows:
Select a TCHF available for adjustment. For concentric cells, select the idle channels on the TRXs in the
underlaid subcell as adjustable channels. If there are no channels available for adjustment, the
adjustment fails.
Convert the channel type and update the channel resources. Then perform configurations on the channels
under the BTS. When the conversion of the channel type is complete, the BTS sends a status change
report to the BSC.
If the channel is available, the idle TCHH converted by the BSC can be used for channel assignment.
The channel adjustment is complete and a TCHF is adjusted to two TCHHs.
Trigger Point
This counter is measured if the following conditions are met:
z
The adjustment from TCHFs to TCHHs is triggered.
z
The BSC receives a channel status change report from the BTS.
z
The BTS notifies to the BSC that the channel is available after the adjustment.
Formula
None.
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13.3.4 Channel Conversion Requests (TCHH-TCHF)
Counter
R3505B: Channel Conversion Requests (TCHH-TCHF)
Meaning
Because the number of the initially configured TCHFs and TCHHs cannot meet the actual
traffic requirements, the BSC enables the TCHHs to be adjusted to TCHFs in certain
conditions.
In certain conditions, the initially configured TCHHs can be adjusted to TCHFs and the
corresponding TCHFs can be adjusted to TCHHs.
The trigger conditions of the adjustment from TCHHs to TCHFs during channel assignment are as
follows:
z
The system allows the dynamic data adjustment.
z
The requested type of channels is TCHF, but there is no qualified TCHF available.
z
There are at least two qualified idle TCHHs.
The adjustment procedure is as follows:
Select two TCHHs available for adjustment. If there are no channels available for adjustment, the
adjustment fails.
Convert the channel type and update the channel resources. Then perform configurations on the channels
under the BTS. When the conversion of the channel type is complete, the BTS sends a status change
report to the BSC.
If the channel is available, the idle TCHF converted by the BSC can be used for channel assignment.
The channel adjustment is complete and the two TCHHs are adjusted to one TCHF.
Trigger Point
Before the channel assignment, this counter is measured when the adjustment from two
TCHFs to a TCHF is initiated.
Formula
None.
13.3.5 Successful Channel Conversions (TCHH-TCHF)
Counter
R3525B: Successful Channel Conversions (TCHH-TCHF)
Meaning
Because the number of the initially configured TCHFs and TCHHs cannot meet the actual
traffic requirements, the BSC enables the TCHHs to be adjusted to TCHFs in certain
conditions.
In certain conditions, the initially configured TCHHs can be adjusted to TCHFs and the
corresponding TCHFs can be adjusted to TCHHs.
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The trigger conditions of the adjustment from TCHHs to TCHFs during channel assignment are as
follows:
z
The system allows the dynamic data adjustment.
z
The requested type of channels is TCHF, but there is no qualified TCHF available.
z
There are at least two qualified idle TCHHs.
The adjustment procedure is as follows:
Select two TCHHs available for adjustment. If there are no channels available for adjustment, the
adjustment fails.
Convert the channel type and update the channel resources. Then perform configurations on the channels
under the BTS. When the conversion of the channel type is complete, the BTS sends a status change
report to the BSC.
If the channel is available, the idle TCHF converted by the BSC can be used for channel assignment.
The channel adjustment is complete and the two TCHHs are adjusted to one TCHF.
Trigger Point
This counter is measured if the following conditions are met:
z
The adjustment from TCHHs to TCHFs is triggered.
z
The BSC receives a channel status change report from the BTS.
z
The BTS notifies to the BSC that the channel is available after the adjustment.
Formula
None.
13.3.6 Number of Channel Conversions (TCH-SDCCH)
Counter
R3516A: Number of Channel Conversions (TCH-SDCCH)
Meaning
When assigning the SDCCHs, the BSC starts to convert a TCH to a SDCCH if the following
conditions are met:
z
Dynamic adjustment of SDCCH is allowed.
z
Number of the idle SDCCHs in the current cell is smaller than the set threshold on the
LMT.
If the adjusted TCH is idle, the dynamic conversion from TCH to SDCCH is immediately
originated. If the adjusted TCH is not idle, the call that seizes the current TCH is handed over
to another channel. Then the dynamic adjustment is originated.
Trigger Point
When the BSC originates the dynamic adjustment from TCH to SDCCH, this counter is
measured.
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Formula
None.
13.3.7 Number of Channel Conversions (SDCCH-TCH)
Counter
R3516B: Number of Channel Conversions (SDCCH-TCH)
Meaning
If the dynamic adjustment of SDCCH is allowed, the BSC activates the dynamic adjustment
algorithm (leaky bucket algorithm) to periodically switch the SDCCH (dynamically converted
from TCH) back to TCH. If the SDCCH is in use, reassigning the SDCCH after a release is
forbidden. The SDCCH is directly switched back to TCH after the release.
Trigger Point
When the SDCCH is converted to TCH, this counter is measured.
Formula
None.
13.4 Channel Busy Duration Measurement per Cell
13.4.1 Overview
The Channel Busy Duration Measurement per Cell measurement unit is used to measure the
following items:
z
Duration of busy state of SDCCH and TCH in the cell
z
Duration of the state of no available SDCCHs and TCHs
This measurement unit reflects the use of SDCCH and TCH.
Table 13-8 lists the classification of the counters in the Channel Busy Duration Measurement
per Cell measurement unit.
Table 13-8 Classification of the counters in the Channel Busy Duration Measurement per Cell
measurement unit
Counter Classification
Section
Busy State Duration of All Channels (SDCCH/TCHF/TCHH)
13.4.2
Mean Duration of Busy State for All Channels (SDCCH/TCHF/TCHH)
13.4.3
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13.4.2 Busy State Duration of All Channels
(SDCCH/TCHF/TCHH)
Counter
Table 13-9 lists the counters in the Busy State Duration of All Channels
(SDCCH/TCHF/TCHH) measurement unit.
Table 13-9 Counters in the Busy State Duration of All Channels (SDCCH/TCHF/TCHH)
measurement unit
Number
Counter
1
R3540: Busy State Duration of Channels (SDCCH)
2
R3541: Busy State Duration of Channels (TCHF)
3
R3542: Busy State Duration of Channels (TCHH)
Meaning
The previous counters are used to measure the following items of a cell under the BSC in a
granularity period:
z
Duration of the state of no available SDCCHs
z
Duration of the state of no available TCHFs
z
Duration of the state of no available TCHHs
At the timing sampling points for channel assignment measurement, the duration of the
previous counters is accumulated based on the channel type in either of the following cases:
z
All the SDCCHs in the cell are seized or unavailable.
z
All the TCHFs in the cell are seized or unavailable.
z
All the TCHHs in the cell are seized or unavailable.
Trigger Point
At the timing sampling points for channel assignment measurement, if the SDCCHs, TCHFs,
or TCHHs in all the cells are not available, the previous counters are measured.
Formula
None.
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13.4.3 Mean Duration of Busy State for All Channels
(SDCCH/TCHF/TCHH)
Counter
Table 13-10 lists the counters in the Mean Duration of Busy State for All Channels
(SDCCH/TCHF/TCHH) measurement unit.
Table 13-10 Counters in the Mean Duration of Busy State for All Channels
(SDCCH/TCHF/TCHH) measurement unit
Number
Counter
1
AR3530: Mean Duration of Busy State for Channels (SDCCH)
2
AR3531: Mean Duration of Busy State for Channels (TCHF)
3
AR3532: Mean Duration of Busy State for Channels (TCHH)
Meaning
This measurement unit is used to measure the mean duration of the state for seized SDCCHs,
TCHFs, or TCHHs configured in a cell under the BSC in a granularity period.
The previous counters reflect the random access frequency of an MS on the cell in the
granularity period in the form of the mean duration of busy state for channels.
The Mean Duration of Busy State for Channels (SDCCH) counter is expressed in seconds.
Trigger Point
None.
Formula
Mean Duration of Busy State for Channels (SDCCH) =
[Busy State Duration of Channels (SDCCH)]/(([Number of Dynamically Configured
Channels (SDCCH) (900/850 Cell)]/[Sampled Number of Configured Channels])+([Number
of Dynamically Configured Channels (SDCCH) (1800/1900 Cell)]/[Sampled Number of
Configured Channels]))
Mean Duration of Busy State for Channels (TCHF) =
[Busy State Duration of Channels (TCHF)]/(([Number of Dynamically Configured Channels
(TCHF) (900/850 Cell)]/[Sampled Number of Configured Channels])+([Number of
Dynamically Configured Channels (TCHF) (1800/1900 Cell)]/[Sampled Number of
Configured Channels]))
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Mean Duration of Busy State for Channels (TCHH) =
[Busy State Duration of Channels (TCHH)]/(([Number of Dynamically Configured Channels
(TCHH) (900/850 Cell)]/[Sampled Number of Configured Channels])+([Number of
Dynamically Configured Channels (TCHH) (1800/1900 Cell)]/[Sampled Number of
Configured Channels]))
13.5 Measurement of Maximum Busy Channels per Cell
Counter
The Measurement of Maximum Busy Channels per Cell measurement unit is used to measure
the maximum number of the busy SDCCHs and the busy TCHs configured in a cell under the
BSC in a granularity period. This measurement unit reflects the highest frequency of the MS
random access in the cell in the granularity period in the form of the maximum number of
busy channels.
Table 13-11 lists the counters in the Measurement of Maximum Busy Channels per Cell
measurement unit.
Table 13-11 Counters in the Measurement of Maximum Busy Channels per Cell measurement
unit
Number
Counter
1
R3560: Maximum Number of Busy Channels (SDCCH)
2
R3561: Maximum Number of Busy Channels (TCHF)
3
R3562: Maximum Number of Busy Channels (TCHH)
Meaning
The previous counters are used to measure the maximum number of busy SDCCHs, busy
TCHFs, and busy TCHHs configured in a cell under the BSC. At the sampling points of the
channel assignment measurement, the system records the maximum number of busy SDCCHs,
busy TCHFs, and busy TCHHs through comparisons.
Trigger Point
At the sampling points of the channel assignment measurement, the system obtains the
maximum number of busy SDCCHs, busy TCHFs, or TCHHs through comparisons in the
granularity period and records the number in the corresponding counter.
Formula
None.
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13.6 Channel State Measurement per Cell
13.6.1 Overview
The Channel State Measurement per Cell measurement unit is used to measure the following
items in the cells on the 900/850 or 1800/1900 band:
z
Mean number of busy SDCCHs
z
Mean number of busy TCHs
z
Mean number of blocked SDCCHs
z
Mean number of blocked TCHs
z
Mean number of idle SDCCHs
z
Mean number of idle TCHs
The number of channels includes the number of converted SDCCHs or TCHs.
A channel has three states: busy, blocked, and idle.
The busy state means that the channel is seized. The mean number of busy state reflects the
random access frequency of an MS in the cell at a sampling point in the form of the number of
the seized channels.
The blocked state means that the channel is blocked because of operation and maintenance
(O&M) or because of broken radio signaling links (RSLs). The mean number of blocked state
reflects the blocking of channels in the cell at a sampling point because of O&M or because of
the broken RSLs.
The idle state means that the channel is not seized and is normal. The mean number of idle
state reflects the idling of channels in the cell at a sampling point.
Table 13-12 lists the classification of the counters in the Channel State Measurement per Cell
measurement unit.
Table 13-12 Classification of the counters in the Channel State Measurement per Cell
measurement unit
Counter Classification
Section
Mean Number of Busy Signaling Channels (SDCCH/TCHF/TCHH)
13.6.2
Mean Number of Busy TCHs (TCHF/TCHH)
13.6.3
Mean Number of Blocked Channels
13.6.4
Mean Number of Idle Channels
13.6.5
Mean Number of Busy TCHs (Overlaid Subcell)
13.6.6
Mean Number of Busy TCHs (Underlaid Subcell)
13.6.7
Mean Number of Busy Signaling Channels (SDCCH/TCHF/TCHH)
13.6.8
Mean Number of Busy TCHs (TCHF/TCHH)
13.6.9
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13.6.2 Mean Number of Busy Signaling Channels
(SDCCH/TCHF/TCHH)
Counter
Table 13-13 lists the counters in the Mean Number of Busy Signaling Channels
(SDCCH/TCHF/TCHH) measurement unit.
Table 13-13 Counters in the Mean Number of Busy Signaling Channels (SDCCH/TCHF/TCHH)
measurement unit
Number
Counter
1
AR3550A: Mean Number of Busy Signaling Channels (SDCCH) (900/850
Cell)
2
AR3550B: Mean Number of Busy Signaling Channels (SDCCH) (1800/1900
Cell)
3
AR3553A: Mean Number of Busy Signaling Channels (TCHF) (900/850 Cell)
4
AR3553B: Mean Number of Busy Signaling Channels (TCHF) (1800/1900
Cell)
5
AR3554A: Mean Number of Busy Signaling Channels (TCHH) (900/850 Cell)
6
AR3554B: Mean Number of Busy Signaling Channels (TCHH) (1800/1900
Cell)
Meaning
Various types (SDCCH, TCHF, or TCHH) of channels configured in the cells can be used as
signaling channels. The previous counters are used to measure the mean number of the seized
signaling channels under the BSC in the granularity period.
The previous counters are the total number (obtained from all the sampling points in the
granularity period) of busy signaling channels divided by the sampling number.
Trigger Point
None.
Formula
Mean Number of Busy Signaling Channels (SDCCH) (900/850 Cell) =
[Number of Busy Signaling Channels (SDCCH) (900/850 Cell)]/[Sampled Number of
Channel State]
Mean Number of Busy Signaling Channels (SDCCH) (1800/1900 Cell) =
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[Number of Busy Signaling Channels (SDCCH) (1800/1900 Cell)]/[Sampled Number of
Channel State]
Mean Number of Busy Signaling Channels (TCHF) (900/850 Cell) =
[Number of Busy Signaling Channels (TCHF) (900/850 Cell)]/[Sampled Number of Channel
State]
Mean Number of Busy Signaling Channels (TCHF) (1800/1900 Cell) =
[Number of Busy Signaling Channels (TCHF) (1800/1900 Cell)]/[Sampled Number of
Channel State]
Mean Number of Busy Signaling Channels (TCHH) (900/850 Cell) =
[Number of Busy Signaling Channels (TCHH) (900/850 Cell)]/[Sampled Number of Channel
State]
Mean Number of Busy Signaling Channels (TCHH) (1800/1900 Cell) =
[Number of Busy Signaling Channels (TCHH) (1800/1900 Cell)]/[Sampled Number of
Channel State]
13.6.3 Mean Number of Busy TCHs (TCHF/TCHH)
Counter
Table 13-14 lists the counters in the Mean Number of Busy TCHs (TCHF/TCHH)
measurement unit.
Table 13-14 Counters in the Mean Number of Busy TCHs (TCHF/TCHH) measurement unit
Number
Counter
1
AR3551A: Mean Number of Busy TCHs (TCHF) (900/850 Cell)
2
AR3551B: Mean Number of Busy TCHs (TCHF) (1800/1900 Cell)
3
AR3552A: Mean Number of Busy TCHs (TCHH) (900/850 Cell)
4
AR3552B: Mean Number of Busy TCHs (TCHH) (1800/1900 Cell)
Meaning
Various types of channels configured in the cells can be used as traffic channels. The previous
counters are used to measure the mean number of the seized traffic channels under the BSC in
the granularity period.
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Trigger Point
None.
Formula
Mean Number of Busy TCHs (TCHF) (900/850 Cell) =
[Number of Busy TCHs (TCHF) (900/850 Cell)]/[Sampled Number of Channel State]
Mean Number of Busy TCHs (TCHF) (1800/1900 Cell) =
[Number of Busy TCHs (TCHF) (1800/1900 Cell)]/[Sampled Number of Channel State]
Mean Number of Busy TCHs (TCHH) (900/850 Cell) =
[Number of Busy TCHs (TCHH) (900/850 Cell)]/[Sampled Number of Channel State]
Mean Number of Busy TCHs (TCHH) (1800/1900 Cell) =
[Number of Busy TCHs (TCHH) (1800/1900 Cell)]/[Sampled Number of Channel State]
13.6.4 Mean Number of Blocked Channels
Counter
Table 13-15 lists the counters in the Mean Number of Blocked Channels measurement unit.
Table 13-15 Counters in the Mean Number of Blocked Channels measurement unit
Number
Counter
1
AR3570: Mean Number of Blocked Channels (SDCCH)
2
AR3571: Mean Number of Blocked Channels (TCHF)
3
AR3572: Mean Number of Blocked Channels (TCHH)
Meaning
The previous counters are used to measure the mean number of the blocked SDCCHs, of the
blocked TCHFs, and of the blocked TCHHs in a cell under the BSC in the granularity period.
Trigger Point
None.
Formula
Mean Number of Blocked Channels (SDCCH) =
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[Number of Blocked Channels (SDCCH)]/[Sampled Number of Channel State]
Mean Number of Blocked Channels (TCHF) =
[Number of Blocked Channels (TCHF)]/[Sampled Number of Channel State]
Mean Number of Blocked Channels (TCHH) =
[Number of Blocked Channels (TCHH)]/[Sampled Number of Channel State]
13.6.5 Mean Number of Idle Channels
Counter
Table 13-16 lists the counters in the Mean Number of Idle Channels measurement unit.
Table 13-16 Counters in the Mean Number of Idle Channels measurement unit
Number
Counter
1
AR3580: Mean Number of Idle Channels (SDCCH)
2
AR3581: Mean Number of Idle Channels (TCHF)
3
AR3582: Mean Number of Idle Channels (TCHH)
Meaning
The previous counters are used to measure the mean number of the idle SDCCHs, of the idle
TCHFs, and of the idle TCHHs in a cell under the BSC in the granularity period.
Trigger Point
None.
Formula
Mean Number of Idle Channels (SDCCH) =
[Number of Idle Channels (SDCCH)]/[Sampled Number of Channel State]
Mean Number of Idle Channels (TCHF) =
[Number of Idle Channels (TCHF)]/[Sampled Number of Channel State]
Mean Number of Idle Channels (TCHH) =
[Number of Idle Channels (TCHH)]/[Sampled Number of Channel State]
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13.6.6 Mean Number of Busy TCHs (Overlaid Subcell)
Counter
AR3557: Mean Number of Busy TCHs (Overlaid Subcell)
Meaning
This counter is used to measure the mean number of the busy traffic channels (TCHFs or
TCHHs) in an overlaid subcell under the BSC during the granularity period.
Trigger Point
None.
Formula
Mean Number of Busy TCHs (Overlaid Subcell) =
[Number of Busy TCHs (Overlaid Subcell)]/[Sampled Number of Channel State]
13.6.7 Mean Number of Busy TCHs (Underlaid Subcell)
Counter
AR3558: Mean Number of Busy TCHs (Underlaid Subcell)
Meaning
This counter is used to measure the mean number of the busy traffic channels (TCHFs or
TCHHs) in an underlaid subcell under the BSC during the granularity period.
Trigger Point
None.
Formula
Mean Number of Busy TCHs (Underlaid Subcell) =
[Number of Busy TCHs (Underlaid Subcell)]/[Sampled Number of Channel State]
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13.6.8 Mean Number of Busy Signaling Channels
(SDCCH/TCHF/TCHH)
Counter
Table 13-17 lists the counters in the Mean Number of Busy Signaling Channels
(SDCCH/TCHF/TCHH) measurement unit.
Table 13-17 Counters in the Mean Number of Busy Signaling Channels (SDCCH/TCHF/TCHH)
measurement unit
Number
Counter
1
CR3550: Mean Number of Busy Signaling Channels (SDCCH)
2
CR3553: Mean Number of Busy Signaling Channels (TCHF)
3
CR3554: Mean Number of Busy Signaling Channels (TCHH)
Meaning
Various types of channels configured in the cells can be used as signaling channels. The
previous counters are used to measure the mean number of the seized signaling channels
under the BSC in the granularity period.
Trigger Point
None.
Formula
Mean Number of Busy Signaling Channels (SDCCH) =
[Mean Number of Busy Signaling Channels (SDCCH) (900/850 Cell)] +
[Mean Number of Busy Signaling Channels (SDCCH) (1800/1900 Cell)]
Mean Number of Busy Signaling Channels (TCHF) =
[Mean Number of Busy Signaling Channels (TCHF) (900/850 Cell)] +
[Mean Number of Busy Signaling Channels (TCHF) (1800/1900 Cell)]
Mean Number of Busy Signaling Channels (TCHH) =
[Mean Number of Busy Signaling Channels (TCHH) (900/850 Cell)] +
[Mean Number of Busy Signaling Channels (TCHH) (1800/1900 Cell)]
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13.6.9 Mean Number of Busy TCHs (TCHF/TCHH)
Counter
Table 13-18 list the counters in the Mean Number of Busy TCHs (TCHF/TCHH)
measurement unit.
Table 13-18 Counters in the Mean Number of Busy TCHs (TCHF/TCHH) measurement unit
Number
Counter
1
CR3551: Mean Number of Busy TCHs (TCHF)
2
CR3552: Mean Number of Busy TCHs (TCHH)
Meaning
TCHFs and TCHHs configured in the cells can be used as traffic channels. The previous
counters are used to measure the mean number of the seized traffic channels under the BSC in
the granularity period.
Trigger Point
None.
Formula
Mean Number of Busy TCHs (TCHF) =
[Mean Number of Busy TCHs (TCHF) (900/850 Cell)] +
[Mean Number of Busy TCHs (TCHF) (1800/1900 Cell)]
Mean Number of Busy TCHs (TCHH) =
[Mean Number of Busy TCHs (TCHH) (900/850 Cell)] +
[Mean Number of Busy TCHs (TCHH) (1800/1900 Cell)]
13.7 Channel Assignment Request Measurement per Cell
13.7.1 Overview
BSS channel assignment occurs in the following procedures:
13-38
z
Immediate assignment
z
Assignment
z
Internal intra-cell handover
z
Internal inter-cell handover
z
Incoming external inter-cell handover
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The Channel Assignment Request Measurement per Cell measurement unit is used to measure
the SDCCH assignment requests and the TCH assignment requests in the previous procedures.
Table 13-19 lists the classification of the counters in the Channel Assignment Request
Measurement per Cell measurement unit.
Table 13-19 Classification of the counters in the Channel Assignment Request Measurement per
Cell measurement unit
Counter Classification
Section
Channel Assignment Requests in Immediate Assignment Procedure
(SDCCH/TCHF/TCHH/TCH)
13.7.2
Channel Assignment Requests in Assignment Procedure (TCHF/TCHH/TCH)
13.7.3
Channel Assignment Requests in Internal Intra-Cell Handover Procedure
(SDCCH/TCHF/TCHH/TCH)
13.7.4
Channel Assignment Requests in Incoming Internal Inter-Cell Handover
Procedure (SDCCH/TCHF/TCHH/TCH)
13.7.5
Channel Assignment Requests in Incoming External Inter-Cell Handover
Procedure (SDCCH/TCHF/TCHH/TCH)
13.7.6
Channel Assignment Requests (SDCCH)
13.7.7
Channel Assignment Requests (TCHF)
13.7.8
Channel Assignment Requests (TCHH)
13.7.9
Channel Assignment Requests (TCH)
13.7.10
13.7.2 Channel Assignment Requests in Immediate Assignment
Procedure (SDCCH/TCHF/TCHH/TCH)
Counter
Table 13-20 lists the counters in the Channel Assignment Requests in Immediate Assignment
Procedure (SDCCH/TCHF/TCHH/TCH) measurement unit.
Table 13-20 Counters in the Channel Assignment Requests in Immediate Assignment Procedure
(SDCCH/TCHF/TCHH/TCH) measurement unit
Number
Counter
1
R3100A: Channel Assignment Requests in Immediate Assignment Procedure
(SDCCH)
2
R3107A: Channel Assignment Requests in Immediate Assignment Procedure
(TCHF)
3
R3108A: Channel Assignment Requests in Immediate Assignment Procedure
(TCHH)
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Number
Counter
4
R3109A: Channel Assignment Requests in Immediate Assignment Procedure
(TCH)
Meaning
The previous counters are used to measure the channel assignment requests for SDCCHs,
TCHFs, and TCHHs in the immediate assignment procedure. When the MS directly sends the
requests to the BSS or sends requests in the reassignment procedure, the corresponding
counters are measured based on the channel type.
Channel Assignment Requests in Immediate Assignment Procedure (TCH) indicates that the
number of the channel assignment requests for TCHFs or TCHHs in the immediate
assignment procedure.
Trigger Point
As shown at point A in Figure 13-1, the BSC measures the previous counters based on the
channel type in the immediate assignment procedure if the following conditions are met:
z
The BSC receives the CHAN RQD message from the BTS.
z
The MS requests for SDCCHs, TCHFs, or TCHHs or the system performs another
request for SDCCHs, TCHFs, or TCHHs.
Figure 13-1 Channel assignment in the immediate assignment procedure
MS
BSC
BTS
CHAN REQ
CHAN RQD
A
CHAN ACT
CHAN ACT ACK
IMM ASS
IMM ASS
SABM
UA
EST IND
Formula
None.
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13.7.3 Channel Assignment Requests in Assignment Procedure
(TCHF/TCHH/TCH)
Counter
Table 13-21 lists the counters in the Channel Assignment Requests in Assignment Procedure
(TCHF/TCHH/TCH) measurement unit.
Table 13-21 Counters in the Channel Assignment Requests in Assignment Procedure
(TCHF/TCHH/TCH) measurement unit
Number
Counter
1
R3107B: Channel Assignment Requests in Assignment Procedure (TCHF)
2
R3108B: Channel Assignment Requests in Assignment Procedure (TCHH)
3
R3109B: Channel Assignment Requests in Assignment Procedure (TCH)
Meaning
In the assignment procedure, the BSS assigns radio channels to an MS for signaling
transmission. After the radio resource connection is established between the MS and the BSS,
the mobility management and call control connection to the MSC is established through the
radio channel. According to the call control connection request from the MS, the MSC assigns
terrestrial resources to the MS and specifies the channel type for the assignment procedure in
the ASS REQ message.
If the MSC specifies TCHFs or TCHHs for the assignment procedure in the ASS REQ
message, the BSC measures this counter after receiving the message.
Channel Assignment Requests in Assignment Procedure (TCH) indicates that the number of
the channel assignment requests for TCHFs or TCHHs in the assignment procedure.
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Trigger Point
As shown at point A in Figure 13-2, the previous counters are measured if the BSC receives
the ASS REQ message from the MSC and the channel type that the message carries is TCHF
or TCHH.
Figure 13-2 Channel assignment in the assignment procedure
MS
BTS
BSC
MSC
ASS REQ
A
CHAN ACT
CHAN ACT ACK
ASS CMD
SABM
UA
Formula
None.
13.7.4 Channel Assignment Requests in Internal Intra-Cell
Handover Procedure (SDCCH/TCHF/TCHH/TCH)
Counter
Table 13-22 lists the counters in the Channel Assignment Requests in Internal Intra-Cell
Handover Procedure (SDCCH/TCHF/TCHH/TCH) measurement unit.
Table 13-22 Counters in the Channel Assignment Requests in Internal Intra-Cell Handover
Procedure (SDCCH/TCHF/TCHH/TCH) measurement unit
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Number
Counter
1
R3100C: Channel Assignment Requests in Internal Intra-Cell Handover
Procedure (SDCCH)
2
R3107C: Channel Assignment Requests in Internal Intra-Cell Handover
Procedure (TCHF)
3
R3108C: Channel Assignment Requests in Internal Intra-Cell Handover
Procedure (TCHH)
4
R3109C: Channel Assignment Requests in Internal Intra-Cell Handover
Procedure (TCH)
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Meaning
In the internal intra-cell handover procedure, the BSC requests the system to reassign the
radio channels. If the requested channel type is SDCCH, TCHF, or TCHH, the corresponding
counters are measured after the BSC receives the requests.
Channel Assignment Requests in Internal Intra-Cell Handover Procedure (TCH) indicates that
the number of the channel assignment requests for TCHFs or TCHHs in the internal intra-cell
handover procedure.
Trigger Point
As shown at point A in Figure 13-3, the previous counters are measured based on the channel
type if the requested channel is SDCCH, TCHF, or TCHH in the internal intra-cell handover
procedure.
Figure 13-3 Channel assignment in the internal intra-cell handover procedure
MS
BTS
BSC
CHAN REQ
CHAN RQD
A
CHAN ACT
CHAN ACT ACK
HO CMD
Formula
None.
13.7.5 Channel Assignment Requests in Incoming Internal InterCell Handover Procedure (SDCCH/TCHF/TCHH/TCH)
Counter
Table 13-23 lists the counters in the Channel Assignment Requests in Incoming Internal InterCell Handover Procedure (SDCCH/TCHF/TCHH/TCH) measurement unit.
Table 13-23 Counters in the Channel Assignment Requests in Incoming Internal Inter-Cell
Handover Procedure (SDCCH/TCHF/TCHH/TCH) measurement unit
Number
Counter
1
R3100D: Channel Assignment Requests in Incoming Internal Inter-Cell
Handover Procedure (SDCCH)
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Number
Counter
2
R3107D: Channel Assignment Requests in Incoming Internal Inter-Cell
Handover Procedure (TCHF)
3
R3108D: Channel Assignment Requests in Incoming Internal Inter-Cell
Handover Procedure (TCHH)
4
R3109D: Channel Assignment Requests in Incoming Internal Inter-Cell
Handover Procedure (TCH)
Meaning
In the incoming internal inter-cell handover procedure, the BSC requests the system to
reassign the radio channels. If the requested channel type is SDCCH, TCHF, or TCHH, the
corresponding counters are measured after the BSC receives the requests.
Channel Assignment Requests in Incoming Internal Inter-Cell Handover Procedure (TCH)
indicates that the number of the channel assignment requests for TCHFs or TCHHs in the
incoming internal inter-cell handover procedure.
Trigger Point
As shown at point A in Figure 13-4, the previous counters are measured based on the channel
type if the requested channel is SDCCH, TCHF, or TCHH in the incoming internal inter-cell
handover procedure.
Figure 13-4 Channel assignment in the incoming internal inter-cell handover procedure
MS
BTS
BSC
MR
A
CHAN ACT
CHAN ACT ACK
HO CMD
Formula
None.
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13.7.6 Channel Assignment Requests in Incoming External InterCell Handover Procedure (SDCCH/TCHF/TCHH/TCH)
Counter
Table 13-24 lists the counters in the Channel Assignment Requests in Incoming External
Inter-Cell Handover Procedure measurement unit.
Table 13-24 Counters in the Channel Assignment Requests in Incoming External Inter-Cell
Handover Procedure measurement unit
Number
Counter
1
R3100E: Channel Assignment Requests in Incoming External Inter-Cell
Handover Procedure (SDCCH)
2
R3107E: Channel Assignment Requests in Incoming External Inter-Cell
Handover Procedure (TCHF)
3
R3108E: Channel Assignment Requests in Incoming External Inter-Cell
Handover Procedure (TCHH)
4
R3109E: Channel Assignment Requests in Incoming External Inter-Cell
Handover Procedure (TCH)
Meaning
The previous counters measure the times that the cells under the BSC receives the
HANDOVER REQUEST message about SDCCH, TCHF, or TCHH from other BSCs through
the MSC in the incoming external inter-cell handover procedure.
Channel Assignment Requests in Incoming External Inter-Cell Handover Procedure (TCH)
indicates that the number of the channel assignment requests for TCHFs or TCHHs in the
incoming external inter-cell handover procedure.
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Trigger Point
As shown at point A in Figure 13-5, the previous counters are measured based on the channel
type if the requested channel is SDCCH, TCHF, or TCHH in the incoming external inter-cell
handover procedure.
Figure 13-5 Channel assignment in the incoming external inter-cell handover procedure
MS
MSC
BSC1
BTS2
BSC2
MR
HO RQD
HO REQ
A
CHAN ACT
CHAN ACT ACK
HO REQ ACK
HO CMD
HO CMD
Formula
None.
13.7.7 Channel Assignment Requests (SDCCH)
Counter
CR3100: Channel Assignment Requests (SDCCH)
Meaning
If the requested channel type is SDCCH, the BSC measures the channel assignment requests
in the following procedures:
z
Immediate assignment
z
Internal intra-cell handover
z
Incoming internal inter-cell handover
z
Incoming external inter-cell handover
Trigger Point
None.
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Formula
Channel Assignment Requests (SDCCH) =
[Channel Assignment Requests in Immediate Assignment Procedure (SDCCH)]+ [Channel
Assignment Requests in Internal Intra-Cell Handover Procedure (SDCCH)]+ [Channel
Assignment Requests in Incoming Internal Inter-Cell Handover Procedure (SDCCH)]+
[Channel Assignment Requests in Incoming External Inter-Cell Handover Procedure
(SDCCH)]
13.7.8 Channel Assignment Requests (TCHF)
Counter
CR3107: Channel Assignment Requests (TCHF)
Meaning
If the requested channel type is TCHF, the BSC measures the channel assignment requests in
the following procedures:
z
Immediate assignment
z
Assignment
z
Internal intra-cell handover
z
Incoming internal inter-cell handover
z
Incoming external inter-cell handover
Trigger Point
None.
Formula
Channel Assignment Requests (TCHF) =
[Channel Assignment Requests in Immediate Assignment Procedure (TCHF)]+ [Channel
Assignment Requests in Assignment Procedure (TCHF)]+ [Channel Assignment Requests in
Internal Intra-Cell Handover Procedure (TCHF)]+ [Channel Assignment Requests in
Incoming Internal Inter-Cell Handover Procedure (TCHF)]+ [Channel Assignment Requests
in Incoming External Inter-Cell Handover Procedure (TCHF)]
13.7.9 Channel Assignment Requests (TCHH)
Counter
CR3108: Channel Assignment Requests (TCHH)
Meaning
If the requested channel type is TCHH, the BSC measures the channel assignment requests in
the following procedures:
z
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z
Assignment
z
Internal intra-cell handover
z
Incoming internal inter-cell handover
z
Incoming external inter-cell handover
Trigger Point
None.
Formula
Channel Assignment Requests (TCHH) =
[Channel Assignment Requests in Immediate Assignment Procedure (TCHH)]+ [Channel
Assignment Requests in Assignment Procedure (TCHH)]+ [Channel Assignment Requests in
Internal Intra-Cell Handover Procedure (TCHH)] + [Channel Assignment Requests in
Incoming Internal Inter-Cell Handover Procedure (TCHH)]+ [Channel Assignment Requests
in Incoming External Inter-Cell Handover Procedure (TCHH)]
13.7.10 Channel Assignment Requests (TCH)
Counter
CR3109: Channel Assignment Requests (TCH)
Meaning
If the requested channel type is TCH, the BSC measures the channel assignment requests in
the following procedures:
z
Immediate assignment
z
Assignment
z
Internal intra-cell handover
z
Incoming internal inter-cell handover
z
Incoming external inter-cell handover
Trigger Point
None.
Formula
Channel Assignment Requests (TCH) =
[Channel Assignment Requests in Immediate Assignment Procedure (TCH)]+ [Channel
Assignment Requests in Assignment Procedure (TCH)]+ [Channel Assignment Requests in
Internal Intra-Cell Handover Procedure (TCH)]+ [Channel Assignment Requests in Incoming
Internal Inter-Cell Handover Procedure (TCH)]+ [Channel Assignment Requests in Incoming
External Inter-Cell Handover Procedure (TCH)]
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13.8 Channel Assignment Success Measurement per TRX
13.8.1 Overview
The Channel Assignment Success Measurement per TRX measurement unit is used to
measure the successful channel assignments in the following procedures based on different
channel types:
z
Immediate assignment
z
Assignment
z
Internal intra-cell handover
z
Incoming internal inter-cell handover
z
Incoming external inter-cell handover
Table 13-25 lists the classification of the counters in the Channel Assignment Success
Measurement per TRX measurement unit.
Table 13-25 Classification of the counters in the Channel Assignment Success Measurement per
TRX measurement unit
Counter Classification
Section
Successful Channel Assignments in Immediate Assignment Procedure
(SDCCH/ TCHF/TCHH)
13.8.2
Successful Channel Assignments in Assignment Procedure (TCHF/TCHH)
13.8.3
Successful Channel Assignments in Internal Intra-Cell Handover Procedure
(SDCCH/ TCHF/TCHH)
13.8.4
Successful Channel Assignments in Incoming Internal Inter-Cell Handover
Procedure (SDCCH/ TCHF/TCHH)
13.8.5
Successful Channel Assignments in Incoming External Inter-Cell Handover
Procedure (SDCCH/ TCHF/TCHH)
13.8.6
Successful Channel Assignments (SDCCH)
13.8.7
Successful Channel Assignments (TCHF)
13.8.8
Successful Channel Assignments (TCHH)
13.8.9
Successful Channel Assignments (TCH)
13.8.10
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13.8.2 Successful Channel Assignments in Immediate Assignment
Procedure (SDCCH/ TCHF/TCHH)
Counter
Table 13-26 lists the counters in the Channel Assignment Success Measurement per TRX
measurement unit.
Table 13-26 Counters in the Channel Assignment Success Measurement per TRX measurement
unit
Number
Counter
1
R4110A: Successful Channel Assignments in Immediate Assignment
Procedure (SDCCH)
2
R4117A: Successful Channel Assignments in Immediate Assignment
Procedure (TCHF)
3
R4118A: Successful Channel Assignments in Immediate Assignment
Procedure (TCHH)
Meaning
The previous counters are used to measure the successful assignments of SDCCH, TCHF, or
TCHH in the immediate assignment procedure. In the immediate assignment procedure, the
BSC assigns channels after receiving the CHAN RQD message from the BTS. If the BSC
successfully assigns the channel resources, the previous counters are measured based on
different channel types before the BSC delivers the CHAN ACT message to the BTS.
The previous counters are used to measure the times that the BSC radio resource management
module successfully searches an idle SDCCH in the channel resource table after receiving the
request for SDCCHs. The number of the times includes the number of successful preemptions
of SDCCHs. Then the BSC sends the CHAN ACT message to the BTS to activate the
SDCCH.
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Trigger Point
As shown at point A in Figure 13-6, the previous counters are measured before the BSC sends
the CHAN ACT message to the BTS if the following conditions are met:
z
The BSC receives the CHAN RQD message.
z
The requested channels are successfully assigned.
In the immediate assignment procedure, the previous counters are measured if the BSC radio
resource management module successfully searches or preempts an idle SDCCH in the
channel resource table.
Figure 13-6 Channel assignment in the immediate assignment procedure
MS
BTS
BSC
CHAN REQ
CHAN RQD
A
CHAN ACT
CHAN ACT ACK
IMM ASS CMD
IMM ASS CMD
SABM
UA
EST IND
Formula
None.
13.8.3 Successful Channel Assignments in Assignment Procedure
(TCHF/TCHH)
Counter
Table 13-27 lists the counters in the Successful Channel Assignments in Assignment
Procedure (TCHF/TCHH) measurement unit.
Table 13-27 Counters in the Successful Channel Assignments in Assignment Procedure
(TCHF/TCHH) measurement unit
Number
Counter
1
R4117B: Successful Channel Assignments in Assignment Procedure (TCHF)
2
R4118B: Successful Channel Assignments in Assignment Procedure (TCHH)
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Meaning
In the TCH assignment procedure, the MSC sends the ASS REQ message to the BSC. The
message carries the information about the channel type in this assignment and about the voice
version of this assignment. The BSC assigns channels based on the current resource
configurations.
The previous counters are used to measure the times that the BSC radio resource management
module successfully searches the idle TCHFs or TCHHs in the channel resource table after
receiving the request for TCHFs or TCHHs. The number of the times includes the number of
successful preemptions of TCHFs or TCHHs. Then the BSC sends the CHAN ACT message
to the BTS to activate the TCH.
Trigger Point
In the assignment procedure, the previous counters are measured based on the types of the
assigned channels in either of the following cases:
z
The BSC successfully assigns or preempts available TCHs.
z
The channels are successfully assigned after direct retry in the BSC.
Formula
None.
13.8.4 Successful Channel Assignments in Internal Intra-Cell
Handover Procedure (SDCCH/TCHF/TCHH)
Counter
Table 13-28 lists the counters in the Successful Channel Assignments in Internal Intra-Cell
Handover Procedure (SDCCH/TCHF/TCHH).
Table 13-28 Counters in the Successful Channel Assignments in Internal Intra-Cell Handover
Procedure (SDCCH/TCHF/TCHH)
Number
Counter
1
R4110C: Successful Channel Assignments in Internal Intra-Cell Handover
Procedure (SDCCH)
2
R4117C: Successful Channel Assignments in Internal Intra-Cell Handover
Procedure (TCHF)
3
R4118C: Successful Channel Assignments in Internal Intra-Cell Handover
Procedure (TCHH)
Meaning
In the internal intra-cell handover procedure during which the MS is handed over between
different channels in the service cell, the BSC determines the channel type of this handover
according to following items:
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z
Handover type
z
Supporting capability of the circuit pool where the A interface is located
z
Type of the channel that is seized by the call
z
Channel rate and channel type requested by the MSC during the initial establishment of
the call
The previous counters are measured after the BSC successfully assigns the channels.
Trigger Point
In the internal intra-cell handover procedure, the BSC successfully assigns the corresponding
channels after the request for the assignment of SDCCH, TCHF, or TCHH. In this case, the
previous counters are measured based on the channel type.
Formula
None.
13.8.5 Successful Channel Assignments in Incoming Internal
Inter-Cell Handover Procedure (SDCCH/TCHF/TCHH)
Counter
Table 13-29 lists the counters in the Successful Channel Assignments in Incoming Internal
Inter-Cell Handover Procedure (SDCCH/TCHF/TCHH) measurement unit.
Table 13-29 Counters in the Successful Channel Assignments in Incoming Internal Inter-Cell
Handover Procedure (SDCCH/TCHF/TCHH) measurement unit
Number
Counter
1
R4110D: Successful Channel Assignments in Incoming Internal Inter-Cell
Handover Procedure (SDCCH)
2
R4117D: Successful Channel Assignments in Incoming Internal Inter-Cell
Handover Procedure (TCHF)
3
R4118D: Successful Channel Assignments in Incoming Internal Inter-Cell
Handover Procedure (TCHH)
Meaning
In the incoming internal inter-cell handover procedure during which the MS is handed over
between different channels in the service cell, the BSC determines the channel type of this
handover according to following items:
z
Handover type
z
Supporting capability of the circuit pool where the A interface is located
z
Type of the channel that is seized by the call
z
Channel rate and channel type requested by the MSC during the initial establishment of
the call
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The previous counters are measured after the BSC successfully assigns the corresponding
channels.
Trigger Point
In the incoming internal inter-cell handover procedure, the BSC successfully assigns the
corresponding channels after the request for the assignment of SDCCH, TCHF, or TCHH. In
this case, the previous counters are measured based on the channel type.
Formula
None.
13.8.6 Successful Channel Assignments in Incoming External
Inter-Cell Handover Procedure (SDCCH/ TCHF/TCHH)
Counter
Table 13-30 lists the counters in the Successful Channel Assignments in Incoming External
Inter-Cell Handover Procedure (SDCCH/ TCHF/TCHH) measurement unit.
Table 13-30 Counters in the Successful Channel Assignments in Incoming External Inter-Cell
Handover Procedure (SDCCH/ TCHF/TCHH) measurement unit
Number
Counter
1
R4110E: Successful Channel Assignments in Incoming External Inter-Cell
Handover Procedure (SDCCH)
2
R4117E: Successful Channel Assignments in Incoming External Inter-Cell
Handover Procedure (TCHF)
3
R4118E: Successful Channel Assignments in Incoming External Inter-Cell
Handover Procedure (TCHH)
Meaning
In the incoming external inter-cell handover procedure during which the MS is handed over
between different channels in the service cell, the BSC determines the channel type of this
handover according to following items:
z
Handover type
z
Supporting capability of the circuit pool where the A interface is located
z
Type of the channel that is seized by the call
z
Channel rate and channel type requested by the MSC during the initial establishment of
the call
The previous counters are measured after the BSC successfully assigns the corresponding
channels.
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Trigger Point
In the incoming external inter-cell handover procedure, the service cell receives the HO REQ
message containing the request for the assignment of SDCCH, TCHF, or TCHH. After the
BSC successfully assigns the corresponding channels, the previous counters are measured
based on the channel type.
Formula
None.
13.8.7 Successful Channel Assignments (SDCCH)
Counter
CR4110: Successful Channel Assignments (SDCCH)
Meaning
After the BSC successfully assigns SDCCHs, this counter is measured in the following
procedures:
z
Immediate assignment
z
Internal intra-cell handover
z
Incoming internal inter-cell handover
z
Incoming external inter-cell handover
Trigger Point
None.
Formula
Successful Channel Assignments (SDCCH) =
[Successful Channel Assignments in Immediate Assignment Procedure (SDCCH)]+
[Successful Channel Assignments in Internal Intra-Cell Handover Procedure (SDCCH)]+
[Successful Channel Assignments in Incoming Internal Inter-Cell Handover Procedure
(SDCCH)]+ [Successful Channel Assignments in Incoming External Inter-Cell Handover
Procedure (SDCCH)]
13.8.8 Successful Channel Assignments (TCHF)
Counter
CR4117: Successful Channel Assignments (TCHF)
Meaning
After the BSC successfully assigns TCHFs, this counter is measured in the following
procedures:
z
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z
Assignment
z
Internal intra-cell handover
z
Incoming internal inter-cell handover
z
Incoming external inter-cell handover
Trigger Point
None.
Formula
Successful Channel Assignments (TCHF) =
[Successful Channel Assignments in Immediate Assignment Procedure (TCHF)]+
[Successful Channel Assignments During Assignment (TCHF)]+
[Successful Channel Assignments in Internal Intra-Cell Handover Procedure (TCHF)]+
[Successful Channel Assignments in Incoming Internal Inter-Cell Handover Procedure
(TCHF)]+
[Successful Channel Assignments in Incoming External Inter-Cell Handover Procedure
(TCHF)]
13.8.9 Successful Channel Assignments (TCHH)
Counter
CR4118: Successful Channel Assignments (TCHH)
Meaning
After the BSC successfully assigns TCHHs, this counter is measured in the following
procedures:
z
Immediate assignment
z
Assignment
z
Internal intra-cell handover
z
Incoming internal inter-cell handover
z
Incoming external inter-cell handover
Trigger Point
None.
Formula
Successful Channel Assignments (TCHH) =
[Successful Channel Assignments in the Immediate Assignment Procedure (TCHH)]+
[Successful Channel Assignments in the Assignment Procedure (TCHH)]+
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[Successful Channel Assignments in the Internal Intra-Cell Handover Procedure (TCHH)]+
[Successful Channel Assignments in Incoming Internal Inter-Cell Handover Procedure
(TCHH)]+
[Successful Channel Assignments in Incoming External Inter-Cell Handover Procedure
(TCHH)]
13.8.10 Successful Channel Assignments (TCH)
Counter
CR4119: Successful Channel Assignments (TCH)
Meaning
After the BSC successfully assigns TCHs, this counter is measured in the following
procedures:
z
Immediate assignment
z
Assignment
z
Internal intra-cell handover
z
Incoming internal inter-cell handover
z
Incoming external inter-cell handover
Trigger Point
None.
Formula
Successful Channel Assignments (TCH) =
[Successful Channel Assignments (TCHF)] + [Successful Channel Assignments (TCHH)]
13.9 Channel Assignment Failure Measurement per Cell
13.9.1 Overview
The Channel Assignment Failure Measurement per Cell measurement unit is used to measure
the failures when the BSC assigns SDCCHs, TCHFs, or TCHHs in the following procedures:
z
Immediate assignment
z
Assignment
z
Internal intra-cell handover
z
Incoming internal inter-cell handover
z
Incoming external inter-cell handover
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Table 13-31 lists the classification of the counters in the Channel Assignment Failure
Measurement per Cell measurement unit.
Table 13-31 Classification of the counters in the Channel Assignment Failure Measurement per
Cell measurement unit
13-58
Counter Classification
Section
Channel Assignment Failures (All Channels Busy or Channels Unconfigured)
in Immediate Assignment Procedure (SDCCH)
13.9.2
Channel Assignment Failures (All Channels Busy or Channels Unconfigured)
in Immediate Assignment Procedure (TCHF)
13.9.3
Channel Assignment Failures (All Channels Busy or Channels Unconfigured)
in Immediate Assignment Procedure (TCHH)
13.9.4
Channel Assignment Failures (All Channels Busy or Channels Unconfigured)
in Assignment Procedure (TCHF/TCHH)
13.9.5
Channel Assignment Failures (All Channels Busy or Channels Unconfigured)
in Internal Intra-Cell Handover Procedure (SDCCH)
13.9.6
Channel Assignment Failures (All Channels Busy or Channels Unconfigured)
in Internal Intra-Cell Handover Procedure (TCHF/TCHH)
13.9.7
Channel Assignment Failures (All Channels Busy or Channels Unconfigured)
in Incoming Internal Inter-Cell Handover Procedure (SDCCH)
13.9.8
Channel Assignment Failures (All Channels Busy or Channels Unconfigured)
in Incoming Internal Inter-Cell Handover Procedure (TCHF/TCHH)
13.9.9
Channel Assignment Failures (All Channels Busy or Channels Unconfigured)
in Incoming External Inter-Cell Handover Procedure (SDCCH)
13.9.10
Channel Assignment Failures (All Channels Busy or Channels Unconfigured)
in Incoming External Inter-Cell Handover Procedure (TCHF/TCHH)
13.9.11
Channel Assignment Failures (All Channels Busy or Channels Unconfigured)
(SDCCH)
13.9.12
Channel Assignment Failures (All Channels Busy or Channels Unconfigured)
(TCHF)
13.9.13
Channel Assignment Failures (All Channels Busy or Channels Unconfigured)
(TCHH)
13.9.14
Channel Assignment Failures (All Channels Busy or Channels Unconfigured)
(TCH)
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13.9.2 Channel Assignment Failures (All Channels Busy or
Channels Unconfigured) in Immediate Assignment Procedure
(SDCCH)
Counter
R3120A: Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in
Immediate Assignment Procedure (SDCCH)
Meaning
This counter is used to measure the channel assignment failures due to busy or unconfigured
channels when the BSC assigns the SDCCHs in the immediate assignment procedure.
Trigger Point
In the immediate assignment procedure, this counter is measured in either of the following
cases:
z
z
The assignment fails when the SDCCH assignment is requested in the following
mechanisms:
−
SDCCH preferred, and then TCHF
−
SDCCH preferred, and then TCHF or TCHH
−
TCHF preferred, and then SDCCH
−
TCHF or TCHH preferred, and then SDCCH
The preferential selection of SDCCH succeeds but the channel is not SDCCH.
Formula
None.
13.9.3 Channel Assignment Failures (All Channels Busy or
Channels Unconfigured) in Immediate Assignment Procedure
(TCHF)
Counter
R3127A: Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in
Immediate Assignment Procedure (TCHF)
Meaning
This counter is used to measure the channel assignment failures due to busy or unconfigured
channels when the BSC assigns the TCHFs in the immediate assignment procedure.
Trigger Point
In the immediate assignment procedure, this counter is measured in either of the following
cases:
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z
z
The assignment fails when the TCHF assignment is requested in the following
mechanisms:
−
SDCCH preferred, and then TCHF
−
SDCCH preferred, and then TCHF or TCHH
−
TCHF preferred, and then SDCCH
−
TCHF or TCHH preferred, and then SDCCH
The preferential selection of TCHF succeeds but the channel is not TCHF.
Formula
None.
13.9.4 Channel Assignment Failures (All Channels Busy or
Channels Unconfigured) in Immediate Assignment Procedure
(TCHH)
Counter
R3128A: Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in
Immediate Assignment Procedure (TCHH)
Meaning
This counter is used to measure the channel assignment failures due to busy or unconfigured
channels when the BSC assigns the TCHHs in the immediate assignment procedure.
Trigger Point
In the immediate assignment procedure, this counter is measured in either of the following
cases:
z
z
The assignment fails when the assignment of TCHH, TCHF or TCHH is requested in the
following mechanisms:
−
SDCCH preferred, and then TCHF or TCHH
−
TCHF or TCHH preferred, and then SDCCH
The preferential selection of TCHH succeeds but the channel is not TCHH.
Formula
None.
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13.9.5 Channel Assignment Failures (All Channels Busy or
Channels Unconfigured) in Assignment Procedure (TCHF/TCHH)
Counter
Table 13-32 lists the counters in the Channel Assignment Failures (All Channels Busy or
Channels Unconfigured) in Assignment Procedure (TCHF/TCHH) measurement unit.
Table 13-32 Counters in the Channel Assignment Failures (All Channels Busy or Channels
Unconfigured) in Assignment Procedure (TCHF/TCHH) measurement unit
Number
Counter
1
R3127B: Channel Assignment Failures (All Channels Busy or Channels
Unconfigured) in Assignment Procedure (TCHF)
2
R3128B: Channel Assignment Failures (All Channels Busy or Channels
Unconfigured) in Assignment Procedure (TCHH)
Meaning
The previous counters are used to measure the channel assignment failures due to busy or
unconfigured channels when the BSC assigns the TCHFs or TCHHs in the assignment
procedure.
Trigger Point
In the assignment procedure, this counter is measured in either of the following cases:
z
z
The assignment fails when the assignment of TCHF or TCHH is requested in the
following mechanisms:
−
TCHF preferred
−
TCHH preferred
The assignment succeeds but the channel is not the requested one.
Formula
None.
13.9.6 Channel Assignment Failures (All Channels Busy or
Channels Unconfigured) in Internal Intra-Cell Handover
Procedure (SDCCH)
Counter
R3120C: Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in
Internal Intra-Cell Handover Procedure (SDCCH)
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Meaning
This counter is used to measure the channel assignment failures due to busy or unconfigured
channels when the BSC assigns the SDCCHs or TCHHs in the internal intra-cell handover
procedure.
Trigger Point
In the internal intra-cell handover procedure, this counter is measured in either of the
following cases:
z
z
The assignment fails when the SDCCH assignment is requested in the following
mechanisms:
−
SDCCH preferred, and then TCHF
−
TCHF preferred, and then SDCCH
The preferential selection of SDCCH succeeds but the channel is not SDCCH.
Formula
None.
13.9.7 Channel Assignment Failures (All Channels Busy or
Channels Unconfigured) in Internal Intra-Cell Handover
Procedure (TCHF/TCHH)
Counter
Table 13-33 lists the counters in the Channel Assignment Failures (All Channels Busy or
Channels Unconfigured) in Internal Intra-Cell Handover Procedure (TCHF/TCHH)
measurement unit.
Table 13-33 Counters in the Channel Assignment Failures (All Channels Busy or Channels
Unconfigured) in Internal Intra-Cell Handover Procedure (TCHF/TCHH) measurement unit
Number
Counter
1
R3127C: Channel Assignment Failures (All Channels Busy or Channels
Unconfigured) in Internal Intra-Cell Handover Procedure (TCHF)
2
R3128C: Channel Assignment Failures (All Channels Busy or Channels
Unconfigured) in Internal Intra-Cell Handover Procedure (TCHH)
Meaning
The previous counters are used to measure the channel assignment failures due to busy or
unconfigured channels when the BSC assigns the TCHFs or TCHHs in the internal intra-cell
handover procedure.
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Trigger Point
In the internal intra-cell handover procedure, this counter is measured in either of the
following cases:
z
z
The assignment fails when the assignment of TCHF, TCHH, TCHF or TCHH is
requested in the following mechanisms:
−
TCHF preferred
−
TCHH preferred
The assignment succeeds but the channel is not the requested one.
Formula
None.
13.9.8 Channel Assignment Failures (All Channels Busy or
Channels Unconfigured) in Incoming Internal Inter-Cell
Handover Procedure (SDCCH)
Counter
R3120D: Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in
Incoming Internal Inter-Cell Handover Procedure (SDCCH)
Meaning
This counter is used to measure the channel assignment failures due to busy or unconfigured
channels when the BSC assigns the SDCCHs in the incoming internal inter-cell handover
procedure.
Trigger Point
In the incoming internal inter-cell handover procedure, this counter is measured in either of
the following cases:
z
z
The assignment fails when the SDCCH assignment is requested in the following
mechanisms:
−
SDCCH preferred, and then TCHF
−
TCHF preferred, and then SDCCH
The preferential selection of SDCCH succeeds but the channel is not SDCCH.
Formula
None.
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13.9.9 Channel Assignment Failures (All Channels Busy or
Channels Unconfigured) in Incoming Internal Inter-Cell
Handover Procedure (TCHF/ TCHH)
Counter
Table 13-34 lists the counters in the Channel Assignment Failures (All Channels Busy or
Channels Unconfigured) in Incoming Internal Inter-Cell Handover Procedure (TCHF/ TCHH)
measurement unit.
Table 13-34 Counters in the Channel Assignment Failures (All Channels Busy or Channels
Unconfigured) in Incoming Internal Inter-Cell Handover Procedure (TCHF/ TCHH) measurement
unit
Number
Counter
1
R3127D: Channel Assignment Failures (All Channels Busy or Channels
Unconfigured) in Incoming Internal Inter-Cell Handover Procedure (TCHF)
2
R3128D: Channel Assignment Failures (All Channels Busy or Channels
Unconfigured) in Incoming Internal Inter-Cell Handover Procedure (TCHH)
Meaning
The previous counters are used to measure the channel assignment failures due to busy or
unconfigured channels when the BSC assigns the TCHFs or TCHHs in the incoming internal
inter-cell handover procedure.
Trigger Point
In the incoming internal inter-cell handover procedure, this counter is measured in either of
the following cases:
z
z
The assignment fails when the assignment of TCHF, TCHH, TCHF or TCHH is
requested in the following mechanisms:
−
TCHF preferred
−
TCHH preferred
The assignment succeeds but the channel is not the requested one.
Formula
None.
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13.9.10 Channel Assignment Failures (All Channels Busy or
Channels Unconfigured) in Incoming External Inter-Cell
Handover Procedure (SDCCH)
Counter
R3120E: Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in
Incoming External Inter-Cell Handover Procedure (SDCCH)
Meaning
This counter is used to measure the channel assignment failures due to busy or unconfigured
channels when the BSC assigns the SDCCHs in the incoming external inter-cell handover
procedure.
Trigger Point
In the incoming external inter-cell handover procedure, this counter is measured in either of
the following cases:
z
z
The assignment fails when the SDCCH assignment is requested in the following
mechanisms:
−
SDCCH preferred, and then TCHF
−
TCHF preferred, and then SDCCH
The preferential selection of SDCCH succeeds but the channel is not SDCCH.
Formula
None.
13.9.11 Channel Assignment Failures (All Channels Busy or
Channels Unconfigured) in Incoming External Inter-Cell
Handover Procedure (TCHF/ TCHH)
Counter
Table 13-35 lists the counters in the Channel Assignment Failures (All Channels Busy or
Channels Unconfigured) in Incoming External Inter-Cell Handover Procedure (TCHF/ TCHH)
measurement unit.
Table 13-35 Counters in the Channel Assignment Failures (All Channels Busy or Channels
Unconfigured) in Incoming External Inter-Cell Handover Procedure (TCHF/ TCHH)
measurement unit
Number
Counter
1
R3127E: Channel Assignment Failures (All Channels Busy or Channels
Unconfigured) in Incoming External Inter-Cell Handover Procedure (TCHF)
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Number
Counter
2
R3128E: Channel Assignment Failures (All Channels Busy or Channels
Unconfigured) in Incoming External Inter-Cell Handover Procedure (TCHH)
Meaning
The previous counters are used to measure the times that there are no corresponding channels
available for assignment in the incoming external inter-cell handover procedure when the
requested channel type is of the following:
z
TCHF or TCHH
z
Channel whose preferential selection is TCHF or TCHH
Trigger Point
In the incoming external inter-cell handover procedure, this counter is measured in either of
the following cases:
z
z
The assignment fails when the requested channel type is of the following:
−
TCHF or TCHH
−
Channel whose type is related to TCHF or TCHH
−
Channel whose preferential selection is TCHF or TCHH
The assignment succeeds but the channel is not the requested one.
Formula
None.
13.9.12 Channel Assignment Failures (All Channels Busy or
Channels Unconfigured) (SDCCH)
Counter
CR3120: Channel Assignment Failures (All Channels Busy or Channels Unconfigured)
(SDCCH)
Meaning
This counter is used to measure the channel assignment failures due to busy or unconfigured
channels when the BSC assigns the SDCCHs in the following procedures:
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z
Immediate assignment
z
Internal intra-cell handover
z
Incoming internal inter-cell handover
z
Incoming external inter-cell handover
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Trigger Point
None.
Formula
Channel Assignment Failures (All Channels Busy or Channels Unconfigured) (SDCCH) =
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Immediate
Assignment Procedure (SDCCH)] +
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Internal
Intra-Cell Handover Procedure (SDCCH)] +
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Incoming
Internal Inter-Cell Handover Procedure (SDCCH)] +
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Incoming
External Inter-Cell Handover Procedure (SDCCH)]
13.9.13 Channel Assignment Failures (All Channels Busy or
Channels Unconfigured) (TCHF)
Counter
CR3127: Channel Assignment Failures (All Channels Busy or Channels Unconfigured)
(TCHF)
Meaning
This counter is used to measure the channel assignment failures due to busy or unconfigured
channels when the BSC assigns the TCHFs in the following procedures:
z
Immediate assignment
z
assignment
z
Internal intra-cell handover
z
Incoming internal inter-cell handover
z
Incoming external inter-cell handover
Trigger Point
None.
Formula
Channel Assignment Failures (All Channels Busy or Channels Unconfigured) (TCHF) =
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Immediate
Assignment Procedure (TCHF)] +
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Assignment
Procedure (TCHF)] +
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Internal
Intra-Cell Handover Procedure (TCHF)] +
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[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Incoming
Internal Inter-Cell Handover Procedure (TCHF)] +
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Incoming
External Inter-Cell Handover Procedure (TCHF)]
13.9.14 Channel Assignment Failures (All Channels Busy or
Channels Unconfigured) (TCHH)
Counter
CR3128: Channel Assignment Failures (All Channels Busy or Channels Unconfigured)
(TCHH)
Meaning
This counter is used to measure the channel assignment failures due to busy or unconfigured
channels when the BSC assigns the TCHHs in the following procedures:
z
Immediate assignment
z
Assignment
z
Internal intra-cell handover
z
Incoming internal inter-cell handover
z
Incoming external inter-cell handover
Trigger Point
None.
Formula
Channel Assignment Failures (All Channels Busy or Channels Unconfigured) (TCHH) =
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Immediate
Assignment Procedure (TCHH)] +
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Assignment
Procedure (TCHH)] +
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Internal
Intra-Cell Handover Procedure (TCHH)] +
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Incoming
Internal Inter-Cell Handover Procedure (TCHH)] +
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Incoming
External Inter-Cell Handover Procedure (TCHH)]
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13.9.15 Channel Assignment Failures (All Channels Busy or
Channels Unconfigured) (TCH)
Counter
CR3129: Channel Assignment Failures (All Channels Busy or Channels Unconfigured) (TCH)
Meaning
This counter is used to measure the channel assignment failures due to busy or unconfigured
channels when the BSC assigns the TCHs in the following procedures:
z
Immediate assignment
z
Assignment
z
Internal intra-cell handover
z
Incoming internal inter-cell handover
z
Incoming external inter-cell handover
Trigger Point
None.
Formula
Channel Assignment Failures (All Channels Busy or Channels Unconfigured) (TCH) =
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) (TCHF)] +
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) (TCHH)]
13.10 Channel Assignment Concentric Cell Measurement
per Cell
13.10.1 Overview
When the concentric cell function is used, the TRXs of the overlaid subcell and underlaid
subcell should be properly configured to achieve the following results:
z
In the wide coverage area, the underlaid subcell provides remote coverage and the
overlaid subcell bears the traffic.
z
In the dense multiplexing area, the underlaid subcell uses the less multiplexed TRX
frequency (BCCH) and the overlaid subcell uses the dense multiplexed TRX frequency.
With scientific configuration of the parameters related to overlaid and underlaid power, the
system interference can be lowered to the greatest extent.
Channel Assignment Concentric Cell Measurement per Cell is used to measure the counters
such as channel assignment requests and overflows. These counters help to analyze the
configuration of channel resources and the settings of handover.
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Table 13-36 lists the counter classification of Channel Assignment Concentric Cell
Measurement per Cell.
Table 13-36 Counter classification of Channel Assignment Concentric Cell Measurement per Cell
Counter Classification
Section
Channel Assignment Requests of Concentric Cell
13.10.2
TCH Assignment Requests of Concentric Cell
13.10.3
Channel Assignment Requests of Concentric Cell in Incoming Internal InterCell Handover Procedure (TCH)
13.10.4
Channel Assignment Requests in Incoming External Inter-Cell Handover
Procedure (TCH)
13.10.5
Channel Assignment Overflows (TCH) (Underlaid Subcell Preferred or
Overlaid Subcell Preferred)
13.10.6
Channel Assignment Overflows in Concentric Cell in Incoming Internal
Inter-Cell Handover Procedure (TCH)
13.10.7
Channel Assignment Overflows in Concentric Cell in Incoming External
Inter-Cell Handover Procedure (TCH)
13.10.8
Channel Assignment Overflows in Concentric Cell (TCH)
13.10.9
Channel Assignment Overflows in Concentric Cell (SDCCH)
13.10.10
Channel Assignment Overflows in Concentric Cell (TCHF)
13.10.11
Channel Assignment Overflows in Concentric Cell (TCHH)
13.10.12
Failed Handovers from Underlaid Subcell to Overlaid Subcell due to Busy
Channels in Overlaid Subcell
13.10.13
Failed Handovers from Overlaid Subcell to Underlaid Subcell due to Busy
Channels in Underlaid Subcell
13.10.14
13.10.2 Channel Assignment Requests of Concentric Cell
Counter
Table 13-37 lists the counters of Channel Assignment Requests of Concentric Cell.
Table 13-37 Channel Assignment Requests of Concentric Cell
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Number
Counter
1
R3200: Channel Assignment Requests (Underlaid Subcell Only)
2
R3201: Channel Assignment Requests (Overlaid Subcell Only)
3
R3202: Channel Assignment Requests (Underlaid Subcell Preferred)
4
R3203: Channel Assignment Requests (Overlaid Subcell Preferred)
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Meaning
The counters measure the number of channel assignment requests of the concentric cell. The
measurement is based on the requirement for the attributes of the concentric cell.
The attributes consist of the following:
z
Underlaid subcell only
z
Overlaid subcell only
z
Underlaid subcell preferred
z
Overlaid subcell preferred
Trigger Point
The measurement is triggered when a concentric cell requests for a channel. The measurement
is based on requirement for the attributes of the concentric cell.
Formula
None.
13.10.3 TCH Assignment Requests of Concentric Cell
Counter
Table 13-38 lists the counters of TCH Assignment Requests of Concentric Cell.
Table 13-38 Counters of TCH Assignment Requests of Concentric Cell
Number
Counter
1
R3202B: TCH Assignment Requests (Underlaid Subcell Preferred)
2
R3203B: TCH Assignment Requests (Overlaid Subcell Preferred)
Meaning
The counters measure the number of TCH assignment requests of a concentric cell in the
assignment procedure. The measurement is based on the requirement for the attributes of the
concentric cell.
The counters show the utilization of the underlaid subcell and overlaid subcell of a concentric
cell. If the ratio of assignment overflows to assignment requests is high, the underlaid subcell
or the overlaid subcell is congested. The traffic load of the underlaid subcell and that of the
overlaid subcell should be regulated.
Trigger Point
In the assignment procedure, the measurement is triggered when a concentric cell requests for
a TCH. The measurement is based on the requirement for the attributes of the concentric cell.
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Formula
None.
13.10.4 Assignment Requests of Concentric Cell in Incoming
Internal Inter-Cell Handover Procedure (TCH)
Counter
Table 13-39 lists the counters of Channel Assignment Requests of Concentric Cell in
Incoming Internal Inter-Cell Handover Procedure (TCH).
Table 13-39 Counters of Channel Assignment Requests of Concentric Cell in Incoming Internal
Inter-Cell Handover Procedure (TCH )
Number
Counter
1
R3202D: Channel Assignment Requests in Incoming Internal Inter-Cell
Handover Procedure (TCH) (Underlaid Subcell Preferred)
2
R3203D: Channel Assignment Requests in Incoming Internal Inter-Cell
Handover Procedure (TCH) (Overlaid Subcell Preferred)
Meaning
The counters measure the number of TCH assignment requests of a concentric cell in the
incoming internal inter-cell handover procedure. The measurement is based on the
requirement for the attributes of the concentric cell.
The counters show the utilization of the underlaid subcell and overlaid subcell of a concentric
cell. If the ratio of assignment overflows to assignment requests is high, the underlaid subcell
or the overlaid subcell is congested. The traffic load of the underlaid subcell and that of the
overlaid subcell should be regulated.
Trigger Point
In the incoming internal inter-cell handover procedure, the measurement is triggered when a
concentric cell requests for a TCH. The measurement is based on the requirement for the
attributes of the concentric cell.
Formula
None.
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13.10.5 Channel Assignment Requests in Incoming External InterCell Handover Procedure (TCH)
Counter
Table 13-40 lists the counters of Channel Assignment Requests in Incoming External InterCell Handover Procedure (TCH).
Table 13-40 Counters of Channel Assignment Requests in Incoming External Inter-Cell Handover
Procedure (TCH)
Number
Counter
1
R3202E: Channel Assignment Requests in Incoming External Inter-Cell
Handover Procedure (TCH) (Underlaid Subcell Preferred)
2
R3203E: Channel Assignment Requests in Incoming External Inter-Cell
Handover Procedure (TCH) (Overlaid Subcell Preferred)
Meaning
The counters measure the number of TCH assignment requests of a concentric cell in the
incoming external inter-cell handover procedure. The measurement is based on the
requirement for the attributes of the concentric cell.
The counters show the utilization of the underlaid subcell and overlaid subcell of a concentric
cell. If the ratio of assignment overflows to assignment requests is high, the underlaid subcell
or the overlaid subcell is congested. The traffic load of the underlaid subcell and that of the
overlaid subcell should be regulated.
Trigger Point
In the incoming external inter-cell handover procedure, the measurement is triggered when a
concentric cell requests for a TCH. The measurement is based on the requirement for the
attributes of the concentric cell.
Formula
None.
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13.10.6 Channel Assignment Overflows (TCH) (Underlaid Subcell
Preferred or Overlaid Subcell Preferred)
Counter
Table 13-41 lists the counters of Channel Assignment Overflows (TCH) (Underlaid Subcell
Preferred or Overlaid Subcell Preferred).
Table 13-41 Counters of Channel Assignment Overflows (TCH) (Underlaid Subcell Preferred or
Overlaid Subcell Preferred)
Number
Counter
1
R3222B: Channel Assignment Overflows (TCH) (Underlaid Subcell
Preferred)
2
R3223B: Channel Assignment Overflows (TCH) (Overlaid Subcell Preferred)
Meaning
In the TCH assignment procedure, the counters measure the number of TCH assignment
overflows when the assignment fails or the channel with the concentric attribute inconsistent
with the requirement is assigned. The measurement is based on the requirement for the
attributes of the concentric cell.
Trigger Point
In the TCH assignment procedure, the measurement is triggered when the assignment fails or
when the channel with the concentric attributes inconsistent with the requirement is assigned.
The measurement is based on the requirement for the attributes of the concentric cell.
Formula
None.
13.10.7 Channel Assignment Overflows in Concentric Cell in
Incoming Internal Inter-Cell Handover Procedure (TCH)
Counter
Table 13-42 lists the counters of Channel Assignment Overflows in Concentric Cell in
Incoming Internal Inter-Cell Handover Procedure (TCH).
Table 13-42 Counters of Channel Assignment Overflows in Concentric Cell in Incoming Internal
Inter-Cell Handover Procedure (TCH)
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Number
Counter
1
R3222D: Channel Assignment Overflows in Incoming Internal Inter-Cell
Handover Procedure (TCH) (Underlaid Subcell Preferred)
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Number
Counter
2
R3223D: Channel Assignment Overflows in Incoming Internal Inter-Cell
Handover Procedure (TCH) (Overlaid Subcell Preferred)
Meaning
In the incoming internal inter-cell handover procedure, the counters measure the number of
TCH assignment overflows when the assignment fails or the channel with the concentric
attribute inconsistent with the requirement is assigned. The measurement is based on the
requirement for the attributes of the concentric cell.
Trigger Point
In the incoming internal inter-cell handover procedure, the measurement is triggered when the
assignment fails or when the channel with the concentric attributes inconsistent with the
requirement is assigned. The measurement is based on the requirement for the attributes of the
concentric cell.
Formula
None.
13.10.8 Channel Assignment Overflows in Concentric Cell in
Incoming External Inter-Cell Handover Procedure (TCH)
Counter
Table 13-43 lists the counters of Channel Assignment Overflows in Concentric Cell in
Incoming External Inter-Cell Handover Procedure (TCH).
Table 13-43 Counters of Channel Assignment Overflows in Concentric Cell in Incoming External
Inter-Cell Handover Procedure (TCH)
Number
Counter
1
R3222E: Channel Assignment Overflows in Incoming External Inter-Cell
Handover Procedure (TCH) (Underlaid Subcell Preferred)
2
R3223E: Channel Assignment Overflows in Incoming External Inter-Cell
Handover Procedure (TCH) (Overlaid Subcell Preferred)
Meaning
In the incoming external inter-cell handover procedure, the counters measure the number of
TCH assignment overflows when the assignment fails or the channel with the concentric
attribute inconsistent with the requirement is assigned. The measurement is based on the
requirement for the attributes of the concentric cell.
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Trigger Point
In the incoming external inter-cell handover procedure, the measurement is triggered when
the assignment fails or when the channel with the concentric attributes inconsistent with the
requirement is assigned. The measurement is based on the requirement for the attributes of the
concentric cell.
Formula
None.
13.10.9 Channel Assignment Overflows in Concentric Cell (TCH)
Counter
Table 13-44 lists the counters of Channel Assignment Overflows in Concentric Cell (TCH).
Table 13-44 Counters of Channel Assignment Overflows in Concentric Cell (TCH)
Number
Counter
1
R3225J: Channel Assignment Overflows in Underlaid Subcell (TCH)
2
R3224J: Channel Assignment Overflows in Overlaid Subcell (TCH)
Meaning
When the BSC needs to assign an MS a TCH in the assignment, immediate assignment,
internal handover, or external handover procedure, it fills the concentric attribute in the
channel request based on the data already configured, and then initiates the channel
assignment procedure. The counters measure the number of times the underlaid subcell or the
overlaid subcell has no idle TCH to be assigned.
Trigger Point
In the TCH assignment, the measurement is triggered when the underlaid subcell or the
overlaid subcell has no idle TCH to be assigned.
Formula
None.
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13.10.10 Channel Assignment Overflows in Concentric Cell
(SDCCH)
Counter
Table 13-45 lists the counters of Channel Assignment Overflows in Concentric Cell (SDCCH).
Table 13-45 Counters of Channel Assignment Overflows in Concentric Cell (SDCCH)
Number
Counter
1
R3225G: Channel Assignment Overflows in Underlaid Subcell (SDCCH)
2
R3224G: Channel Assignment Overflows in Overlaid Subcell (SDCCH)
Meaning
When the BSC receives an SDCCH request, it fills the concentric attribute in the channel
request based on the data already configured, and then initiates the channel assignment
procedure. The counters measure the number of times the underlaid subcell or the overlaid
subcell has no idle SDCCH to be assigned.
Trigger Point
In the SDCCH assignment, the measurement is triggered when the underlaid subcell or the
overlaid subcell has no idle SDCCH to be assigned.
Formula
None.
13.10.11 Channel Assignment Overflows in Concentric Cell
(TCHF)
Counter
Table 13-46 lists the counters of Channel Assignment Overflows in Concentric Cell (TCHF).
Table 13-46 Counters of Channel Assignment Overflows in Concentric Cell (TCHF)
Number
Counter
1
R3225H: Channel Assignment Overflows in Underlaid Subcell (TCHF)
2
R3224H: Channel Assignment Overflows in Overlaid Subcell (TCHF)
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Meaning
If a concentric cell requests for a TCHF in the underlaid subcell or the overlaid subcell, but
the assigned channel does not meet the requirement or the assignment fails, the BSC measures
the number of channel assignment overflows under the related conditions.
Trigger Point
If a concentric cell requests for a TCHF in the underlaid subcell or the overlaid subcell, the
measurement is triggered when the assigned channel does not meet the requirement or when
the assignment fails.
Formula
None.
13.10.12 Channel Assignment Overflows in Concentric Cell
(TCHH)
Counter
Table 13-47 lists the counters of Channel Assignment Overflows in Concentric Cell (TCHH).
Table 13-47 Counters of Channel Assignment Overflows in Concentric Cell (TCHH)
Number
Counter
1
R3225I: Channel Assignment Overflows in Underlaid Subcell (TCHH)
2
R3224I: Channel Assignment Overflows in Overlaid Subcell (TCHH)
Meaning
If a concentric cell requests for a TCHH in the underlaid subcell or the overlaid subcell, but
the assigned channel does not meet the requirement or the assignment fails, the BSC measures
the number of channel assignment overflows under the related conditions.
Trigger Point
The measurement is triggered when the assigned channel does not meet the requirement or
when the assignment fails.
Formula
None.
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13.10.13 Failed Handovers from Underlaid Subcell to Overlaid
Subcell due to Busy Channels in Overlaid Subcell
Counter
R3224K: Failed Handovers from Underlaid Subcell to Overlaid Subcell due to Busy Channels
in Overlaid Subcell
Meaning
In the handover from the underlaid subcell to the overlaid subcell, the counter measures the
number of failed handovers because the overlaid subcell has no idle channel available.
The counter helps to determine whether the configuration of the TCHs in the overlaid subcell
is appropriate or not. If the result of this measurement is too high, the traffic load of the
underlaid subcell and that of the overlaid subcell should be regulated.
Trigger Point
In the handover from the underlaid subcell to the overlaid subcell, the measurement is
triggered when the BSC detects that the overlaid subcell has no channel to be assigned.
Formula
None.
13.10.14 Failed Handovers from Overlaid Subcell to Underlaid
Subcell due to Busy Channels in Underlaid Subcell
Counter
R3225K: Failed Handovers from Overlaid Subcell to Underlaid Subcell due to Busy Channels
in Underlaid Subcell
Meaning
In the handover from the overlaid subcell to the underlaid subcell, the counter measures the
number of failed handovers because the underlaid subcell has no idle channel available. If the
result of this measurement is too high, the traffic load of the underlaid subcell and that of the
overlaid subcell should be regulated.
Trigger Point
In the handover from the overlaid subcell to the underlaid subcell, the measurement is
triggered when the BSC detects that the underlaid subcell has no channel to be assigned.
Formula
None.
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13.11 Channel Assignment Queue Measurement per Cell
13.11.1 Overview
Channel Assignment Queue Measurement per Cell is used to measure the queue related
counters in the Channel Assignment procedure.
Table 13-48 lists the measurement units of Channel Assignment Queue Measurement per Cell.
Table 13-48 Measurement units of Channel Assignment Queue Measurement per Cell
Counter Classification
Section
Maximum Queue Length
13.11.2
Total Queue Length
13.11.3
Sampled Queuings
13.11.4
Total Queuing Duration
13.11.5
Queuings in Channel Assignment Procedure
13.11.6
Mean Queue Length
13.11.7
Mean Queuing Duration
13.11.8
Failed Queuings
13.11.9
13.11.2 Maximum Queue Length
Counter
R3130: Maximum Queue Length
Meaning
This counter is used to measure the maximum length of the queue in a cell. It shows the busy
state of the services in a cell in busy hours. The BSC compares the peak values of queues
during channel assignment at the sampling point and then records the values.
Trigger Point
The BSC periodically obtains the length of the queue in the measured cell at the sampling
point in a granularity period. If the obtained length is greater than the latest maximum queue
length saved in the same granularity period, the BSC uses the obtained value to overwrite the
latest value.
Formula
None.
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13.11.3 Total Queue Length
Counter
R3131: Total Queue Length
Meaning
This counter is used to measure the accumulated length of the queue in the channel
assignment procedure in a BSC cell in a granularity period.
Trigger Point
The BSC accumulates all the sampled values in a granularity period.
Formula
None.
13.11.4 Sampled Queuings
Counter
R3132: Sampled Queuings
Meaning
This counter is used to measure the number of attempts to measure the length of a queue in a
BSC cell in a granularity period.
Trigger Point
This counter is measured once the BSC measures the length of a queue at the sampling point
in the cell.
Formula
None.
13.11.5 Total Queuing Duration
Counter
R3133: Total Queuing Duration
Meaning
This counter is used to measure the accumulated queuing duration (in seconds) of a call in a
granularity period.
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Trigger Point
The BSC accumulates all the sampled values in a granularity period.
Formula
None.
13.11.6 Channel Assignment Queue Measurement
Counter
Table 13-49 lists the counters of Channel Assignment Queue Measurement.
Table 13-49 Counters of Channel Assignment Queue Measurement
Number
Counter
1
R3134: Failed Queuing Attempts due to Queue Overflow
2
R3135: Queuing Requests
3
R3136: Failed Queuings (Preemption)
4
R3137: Failed Queuings (Queuing Timer Expired)
5
R3138: Failed Queuings (Dynamic Adjustment Timed Out)
Meaning
In the assignment procedure or incoming-BSC handover procedure, if the MSC requests a
TCH, but the BSC detects that there is no idle TCH during channel assignment, and the BSC
supports queuing, then the calls shall be queued. However, the number of calls to be queued
by the BSC is limited. If the queue is full and the queuing fails, the BSC measures counter
R3134: Failed Queuing Attempts due to Queue Overflow.
In the assignment procedure or incoming-BSC handover procedure, if the MSC requests a
TCH, but the BSC detects that there is no idle TCH during channel assignment, and the BSC
supports queuing, then the calls shall be queued. In this case, the BSC measures counter
R3135: Queuing Requests.
In the assignment procedure or incoming-BSC handover procedure, if the MSC requests a
TCH, but the BSC detects that there is no idle TCH during channel assignment. If the calls
support pre-emption and the BSC supports pre-emption, then the BSC shall pre-empt TCHs.
If the pre-emption is successful and the BSC supports queuing, then the BSC initiates a
queuing procedure and starts a timer to wait for an available TCH. If there is no idle TCH
upon the timer expiry, the BSC measures counter R3136: Failed Queuings (Preemption).
In the assignment procedure or incoming-BSC handover procedure, if the MSC requests a
TCH, but the BSC detects that there is no idle TCH during channel assignment. If the BSC
does not initiate a pre-emption procedure or dynamic channel conversion procedure but the
BSC supports queuing, then the calls shall be queued for a TCH. At the same time, the BSC
starts a timer to wait for an idle TCH. If there is no idle TCH upon the timer expiry, the BSC
measures counter R3137: Failed Queuings (Queuing Timer Expired).
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In the assignment procedure or incoming-BSC handover procedure, the BSC initiates a
dynamic channel conversion procedure if:
z
The MSC requests a TCHF or TCHF, but the BSC detects that there is no idle TCHF or
TCHF during the channel assignment
z
The BSC supports dynamic channel conversion and the conditions for dynamic channel
conversion are met
If the BSC supports queuing, the BSC initiates a queuing procedure and starts a timer to wait
for an idle TCHF or TCHH.
If there is no idle TCHF or TCHH upon the timer expiry, the BSC measures counter R3138:
Failed Queuings (Dynamic Adjustment Timed Out).
Trigger Point
Counter R3134 is measured when the queue is full in the assignment procedure or incomingBSC handover procedure.
Counter R3135 is measured when the BSC initiates a queuing for a TCH in the assignment
procedure or incoming-BSC handover procedure.
Counter R3136 is measured when there is no idle TCH upon the timer expiry even if the BSC
initiates queuing and pre-emption procedures in the assignment procedure or incoming-BSC
handover procedure.
Counter R3136 is measured in the assignment procedure or incoming-BSC handover
procedure in either of the following cases:
z
The BSC does not initiate any pre-emption procedure or dynamic channel conversion
procedure.
z
The BSC initiates a queuing procedure but there is no idle TCH upon the timer expiry.
Formula
None.
13.11.7 Mean Queue Length
Counter
AR3131: Mean Queue Length
Meaning
This counter is used to measure the mean length of a queue in a BSC cell in a granularity
period.
Trigger Point
None.
Formula
Mean Queue Length = [Total Queue Length]/[Sampled Queuings]
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13.11.8 Mean Queuing Duration
Counter
AR3133: Mean Queuing Duration
Meaning
This counter is used to measure the mean time of a call to queue for a TCH in a BSC cell in a
granularity period.
Trigger Point
None.
Formula
Mean Queuing Duration = [Total Queuing Duration]/[Queuing Requests]
13.11.9 Failed Queuings
Counter
CR313C: Failed Queuings
Meaning
This counter is used to measure the number of failed queuings due to various causes in a BSC
cell in a granularity period.
Trigger Point
None.
Formula
Failed Queuings =
[Failed Queuings (Pre-emption)] +
[Failed Queuings (Queuing Timer Expired)] +
[Failed Queuings (Dynamic Adjustment Timed Out)]
13.12 Channel Assignment GPRS Measurement per Cell
13.12.1 Overview
The BSS supports two types of PDCHs: dynamic and static PDCHs.
After the kickoff of a GPRS cell, the PCU obtains the right to assign static PDCHs.
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The BSC does not manage the assignment of the static PDCHs but performs basic
maintenance of them. The BSC assigns the dynamic PDCHs for either circuit switched
domain (CS) services or packet switched domain (PS) services. The BSC preferentially
assigns PDCHs for CS services. If it detects that there is no idle TCH for CS services or
predicts that the TCHs for CS services are insufficient, the BSC requests the PCU to forcibly
release the already assigned dynamic PDCHs and uses them as TCHs.
Channel Assignment GPRS Measurement per Cell is used to measure the number of requests
from the BSC to the PCU for forcibly releasing TCHs and the number of successful requests.
The two counters reflect the busy state of the CS services and the assignment of the channels
assigned to CS services and PS services.
Table 13-50 lists the counters of Channel Assignment GPRS Measurement per Cell.
Table 13-50 Counters of Channel Assignment GPRS Measurement per Cell
Number
Counter
1
R3140: Requests for TCH from the PCU
2
R3141: Successful Requests for TCH from the PCU
13.12.2 Requests for TCH from the PCU
Counter
R3140: Requests for TCH from the PCU
Meaning
This counter is used to measure the number of requests sent from the BSC to the PCU for
releasing the dynamic PDCHs.
Trigger Point
This counter is measured when the BSC sends a request to the PCU for releasing the already
assigned dynamic PDCHs in either of the following cases:
z
The BSC detects that there are no enough idle TCHs for the CS services.
z
The BSC predicts that there are no enough idle TCHs for CS services.
Formula
None.
13.12.3 Successful TCH Requests from the PCU
Counter
R3141: Successful TCH Requests from the PCU
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Meaning
This counter is used to measure the successful responses from the PCU to the requests for
dynamic PDCH.
Trigger Point
This counter is measured when the BSC receives a successful response to the TCH request
from the PCU.
Formula
None.
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