GSM BSS
GBSS17.1
VAMOS Feature Parameter
Description
Issue
03
Date
2015-09-07
HUAWEI TECHNOLOGIES CO., LTD.
Copyright © Huawei Technologies Co., Ltd. 2015. All rights reserved.
No part of this document may be reproduced or transmitted in any form or by any means without prior written
consent of Huawei Technologies Co., Ltd.
Trademarks and Permissions
and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.
All other trademarks and trade names mentioned in this document are the property of their respective
holders.
Notice
The purchased products, services and features are stipulated by the contract made between Huawei and the
customer. All or part of the products, services and features described in this document may not be within the
purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information,
and recommendations in this document are provided "AS IS" without warranties, guarantees or
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The information in this document is subject to change without notice. Every effort has been made in the
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Huawei Technologies Co., Ltd.
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VAMOS Feature Parameter Description
Contents
Contents
1 About This Document.................................................................................................................. 1
1.1 Scope.............................................................................................................................................................................. 1
1.2 Intended Audience.......................................................................................................................................................... 1
1.3 Change History............................................................................................................................................................... 1
2 Overview......................................................................................................................................... 4
2.1 Introduction.................................................................................................................................................................... 4
2.1.1 VAMOS & VAMOS FR.............................................................................................................................................. 4
2.1.2 VAMOS I&II Support..................................................................................................................................................4
2.2 Benefits........................................................................................................................................................................... 5
2.2.1 VAMOS & VAMOS FR.............................................................................................................................................. 5
2.2.2 VAMOS I&II Support..................................................................................................................................................6
2.3 NEs Supporting the Feature............................................................................................................................................6
3 Technical Description...................................................................................................................7
3.1 MS VAMOS Capabilities............................................................................................................................................... 8
3.1.1 SAIC MS..................................................................................................................................................................... 8
3.1.2 VAMOS MS.................................................................................................................................................................9
3.1.3 TSC............................................................................................................................................................................ 10
3.2 White SAIC MS Identification..................................................................................................................................... 11
3.2.1 White SAIC MS Identification per Call.................................................................................................................... 11
3.2.2 Final Result for White SAIC MS Identification........................................................................................................ 14
3.2.3 SAIC MS Capability Database Maintenance............................................................................................................ 14
3.3 Modulation and Demodulation..................................................................................................................................... 15
3.4 VAMOS Channel Multiplexing.................................................................................................................................... 16
3.4.1 VAMOS Channel....................................................................................................................................................... 16
3.4.2 Candidate VAMOS Call............................................................................................................................................ 17
3.4.3 VAMOS Channel Multiplexing Using an Intra-Cell Handover................................................................................ 20
3.4.4 VAMOS Channel Multiplexing Using the Assignment Procedure........................................................................... 24
3.5 VAMOS Channel Demultiplexing................................................................................................................................31
3.5.1 VAMOS Channel Demultiplexing Due to BQ...........................................................................................................31
3.5.2 Optimization of VAMOS Channel Demultiplexing Due to BQ................................................................................ 32
3.5.3 VAMOS Channel Demultiplexing Due to Light Cell Load.......................................................................................33
3.6 VAMOS Power Control................................................................................................................................................34
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Contents
3.6.1 Uplink Power Control................................................................................................................................................35
3.6.2 Downlink Power Control...........................................................................................................................................36
3.6.3 Active Power Control................................................................................................................................................ 37
4 Related Features...........................................................................................................................41
4.1 GBFD-115830 VAMOS............................................................................................................................................... 41
4.1.1 Prerequisite Features..................................................................................................................................................41
4.1.2 Mutually Exclusive Features..................................................................................................................................... 42
4.1.3 Impacted Features......................................................................................................................................................43
4.2 GBFD-160201 VAMOS FR......................................................................................................................................... 47
4.2.1 Prerequisite Features..................................................................................................................................................47
4.2.2 Mutually Exclusive Features..................................................................................................................................... 47
4.2.3 Impacted Features......................................................................................................................................................47
4.3 GBFD-160217 VAMOS I&II Support..........................................................................................................................47
4.3.1 Prerequisite Features..................................................................................................................................................47
4.3.2 Mutually Exclusive Features..................................................................................................................................... 47
4.3.3 Impacted Features......................................................................................................................................................48
5 Network Impact........................................................................................................................... 49
5.1 System Capacity........................................................................................................................................................... 49
5.2 Network Performance...................................................................................................................................................50
5.2.1 White SAIC MS Identification.................................................................................................................................. 50
5.2.2 VAMOS..................................................................................................................................................................... 51
5.3 Inter-NE Interfaces....................................................................................................................................................... 54
5.3.1 Abis Interface Message............................................................................................................................................. 55
5.3.2 Power Control Command Messages..........................................................................................................................55
5.3.3 Channel Activation Message..................................................................................................................................... 55
5.3.4 Assignment Command/Handover Command/Channel Mode Modify Messages......................................................55
5.4 Operation and Maintenance..........................................................................................................................................55
5.4.1 Channel Status Changed on the LMT........................................................................................................................56
5.4.2 Forced VAMOS Channel Multiplexing Added......................................................................................................... 57
5.4.3 Forced VAMOS Channel Demultiplexing Added..................................................................................................... 58
5.4.4 Querying VAMOS Capabilities in a Cell Added.......................................................................................................58
6 Engineering Guidelines............................................................................................................. 62
6.1 When to Use................................................................................................................................................................. 62
6.1.1 VAMOS..................................................................................................................................................................... 62
6.1.2 VAMOS I&II Support................................................................................................................................................63
6.2 Planning........................................................................................................................................................................ 63
6.2.1 TSC............................................................................................................................................................................ 63
6.2.2 Capacity..................................................................................................................................................................... 64
6.2.3 Transmission Resources............................................................................................................................................ 64
6.2.4 BSC Boards............................................................................................................................................................... 64
6.3 Deploying the VAMOS Function................................................................................................................................. 65
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6.3.1 Deployment Requirements........................................................................................................................................ 65
6.3.2 Precautions.................................................................................................................................................................66
6.3.3 Activation.................................................................................................................................................................. 66
6.3.4 Activation Observation (the VAMOS Feature)......................................................................................................... 74
6.3.5 Activation Observation (the VAMOS FR Feature)................................................................................................... 82
6.3.6 Deactivation...............................................................................................................................................................89
6.4 Deploying VAMOS I&II Support.................................................................................................................................95
6.4.1 Deployment Requirements........................................................................................................................................ 95
6.4.2 Activation.................................................................................................................................................................. 96
6.4.3 Activation Observation..............................................................................................................................................97
6.4.4 Deactivation.............................................................................................................................................................101
7 Parameters................................................................................................................................... 103
8 Counters...................................................................................................................................... 151
9 Glossary....................................................................................................................................... 184
10 Reference Documents............................................................................................................. 185
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VAMOS Feature Parameter Description
1 About This Document
1
About This Document
1.1 Scope
This document describes the VAMOS function, including its implementation principles,
related features, network impact, and engineering guidelines.
The VAMOS function consists of three features:
l
GBFD-115830 VAMOS
l
GBFD-160201 VAMOS FR
l
GBFD-160217 VAMOS I&II Support
1.2 Intended Audience
This document is intended for personnel who:
l
Need to understand the VAMOS function
l
Work with Huawei GSM products
l
Are familiar with GSM basics
1.3 Change History
This section provides information about the changes in different document versions.
There are two types of changes:
l
Feature change
Feature change refers to the change in the TRM feature of a specific product version.
l
Editorial change
Editorial change refers to the change in wording or the addition of the information that
was not described in the earlier version.
03 (2015-09-07)
This issue includes the following changes.
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VAMOS Feature Parameter Description
1 About This Document
Change Type
Change Description
Parameter
Change
Feature change
Added RF modules RRU3962, RRU3962d,
RRU3965, RRU3965d, MRFUd V6, MRFUdw
V6, RRU3952m, and AAU3911.
None
Editorial
change
None
None
02 (2015-06-27)
This issue includes the following changes.
Change Type
Change Description
Parameter
Change
Feature change
None
None
Editorial
change
Updated 6.4.1 Deployment Requirements.
None
01 (2015-04-20)
This issue includes the following changes.
Change Type
Change Description
Parameter
Change
Feature change
None
None
Editorial
change
Updated 5.2.2 VAMOS.
None
Draft B (2015-03-23)
This issue includes the following changes.
Issue 03 (2015-09-07)
Change Type
Change Description
Parameter
Change
Feature change
None
None
Editorial
change
Updated 5.2.1 White SAIC MS Identification.
None
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VAMOS Feature Parameter Description
1 About This Document
Draft A (2015-01-15)
Compared with Issue 01 (2014-04-30) of GBSS16.0, Draft A (2015-01-15) of GBSS17.1
includes the following changes.
Change
Type
Change Description
Parameter Change
Feature
change
Added radio frequency (RF) modules
supporting the VAMOS function in 5.4.4
Querying VAMOS Capabilities in a Cell
Added.
None
Added the white SAIC MS identification
function.
Added the following
parameters:
VamosBQDemuxPenSw(BSC
6900,BSC6910)
SaicWhtMsIdentSw(BSC690
0,BSC6910)
SaicWhtMsIdentAlphaUpThld(BSC6900,BSC69
10)
SaicWhtMsIdentAlphaLwrThld(BSC6900,BSC6
910)
SaicWhtIdentTotalTime(BSC6900,BSC6910)
SaicWhtIdentOnePrdTime(BSC6900,BSC6910)
SaicWhtAvgAbnTimesThld(BSC6900,BSC6910)
SaicWhtAvgRxQualBadThld(BSC6900,BSC6910)
SaicWhtMsIdentReqTimes(BSC6900,BSC6910)
SaicWhtMsIdentSatTimes(BSC6900,BSC6910)
ICAdpScnIdentOptSw(BSC6
900,BSC6910)
Added the parameter that controls whether
to enable the TSC normalization function.
Added the following
parameters:
TSCUnifySw(BSC6900,BSC6
910)
Editorial
change
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3
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VAMOS Feature Parameter Description
2 Overview
2
Overview
2.1 Introduction
2.1.1 VAMOS & VAMOS FR
Voice services over adaptive multi-user channels on one slot (VAMOS) was introduced during
GSM/EDGE radio access network (GERAN) evolution and developed based on the MultiUser Reusing One Slot (MUROS) technology. Huawei VAMOS and VAMOS FR features use
the VAMOS technique to multiplex two voice calls onto one voice channel, thereby
expanding GSM network capacity.
l
With the VAMOS feature, two voice calls can be multiplexed onto one half-rate traffic
channel (TCHH).
l
With the VAMOS FR feature, two voice calls can be multiplexed onto one full-rate
traffic channel (TCHF).
l
With both the VAMOS and VAMOS FR features, two voice calls can be multiplexed
onto either one TCHH or one TCHF.
Since the channel multiplexing principles of VAMOS FR are similar to those of VAMOS, this
document describes the two features altogether. To simplify this description, the VAMOS and
VAMOS FR features are collectively referred to as the VAMOS function in this document.
2.1.2 VAMOS I&II Support
The VAMOS I&II Support feature supports the following new functions defined for VAMOS
I and VAMOS II MSs in 3GPP TS 45002 and 3GPP TS 44018:
l
VAMOS I and VAMOS II MSs can use new TSCs to perform VAMOS channel
multiplexing or to make common calls.
l
When VAMOS II MSs use new TSCs, the shift SACCH function is implemented
according to 3GPP specifications. The Huawei shift SACCH function is the same as the
shift SACCH function defined in 3GPP TS 45002. For details about this function, see
3GPP TS 45002.
These new functions improve the performance of the VAMOS function.
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VAMOS Feature Parameter Description
2 Overview
2.2 Benefits
2.2.1 VAMOS & VAMOS FR
The VAMOS and VAMOS FR features expand GSM network capacity without adding
transceivers (TRXs) or frequencies. VAMOS expands network capacity at the expense of
slightly affected voice quality; whereas, VAMOS FR improves voice quality without reducing
network capacity.
VAMOS and VAMOS FR have the following impacts on network capacity and on the mean
opinion score (MOS):
l
Compared with the AMR HR or Half Rate Speech feature, VAMOS doubles the
improvement in network capacity but lower the MOS.
l
Compared with the AMR FR or Enhanced Full Rate feature, VAMOS FR doubles the
improvement in network capacity but lower the MOS.
l
VAMOS FR improves network capacity as much as the AMR HR or Half Rate Speech
feature but increases the MOS compared with these features.
Figure 2-1 shows the simulation results of MOS for the VAMOS function.The simulation
result is used for reference only.
Figure 2-1 Simulation results of MOS for the VAMOS function
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VAMOS Feature Parameter Description
2 Overview
2.2.2 VAMOS I&II Support
l
VAMOS I and VAMOS II MSs can support VAMOS services better than SAIC MSs.
Therefore, enabling VAMOS I&II Support on the BSC side improves the voice quality
and decreases the call drop rate for VAMOS I and VAMOS II MSs.
l
A VAMOS II MS and a non-SAIC MS can be multiplexed onto one channel and the
capacity gains contributed by VAMOS II MSs are twice those contributed by SAIC MSs.
Therefore, the VAMOS capacity gains delivered when the penetration rate of VAMOS II
MSs on a network is 50% are equivalent to those delivered when the penetration rate of
SAIC MSs is 100%. This enables VAMOS channel multiplexing on non-SAIC MSs.
2.3 NEs Supporting the Feature
Table 2-1 NEs supporting the feature
Feature
BSC6900
BSC6910
GBTS
eGBTS
VAMOS
√
√
√
√
VAMOS FR
√
√
√
√
VAMOS I&II
Support
√
√
√
√
NOTE
√ indicates that the NE supports this feature. × indicates that the NE does not support this feature.
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VAMOS Feature Parameter Description
3 Technical Description
3
Technical Description
The VAMOS function multiplexes two calls onto the same voice channel while maintaining
good voice quality. This requires support from the MSs, BTS, and BSC.
l
MS
To support the VAMOS function, MSs must meet both of the following conditions:
–
At least one of the two MSs on which the BSC performs VAMOS channel
multiplexing is a single antenna interference cancellation (SAIC) MS or VAMOS
MS, because VAMOS channel multiplexing cannot be performed on two MSs
neither of which supports SAIC, VAMOS I, or VAMOS II.
–
The two MSs on which the BSC performs VAMOS channel multiplexing use two
orthogonal training sequence codes (TSCs).
For details about SAIC or VAMOS MSs, see 3.1 MS VAMOS Capabilities.
l
BTS
If VAMOS calls use the modulation and demodulation modes of common calls, severe
interference will result. Therefore, special modulation and demodulation methods must
be used for VAMOS calls to ensure good voice quality after VAMOS channel
multiplexing. For details about the modulation and demodulation methods, see 3.3
Modulation and Demodulation.
l
BSC
The cell-level parameter VamosSwitch(BSC6900,BSC6910) controls whether a cell
supports the VAMOS function. If this parameter is set to ON(On), the cell supports both
the VAMOS and VAMOS FR features. If this parameter is set to VFR(VFR), the cell
supports only the VAMOS FR feature. If this parameter is set to VHR(VHR), the cell
supports only the VAMOS feature. The following functions are also added to allow the
BSC to support the VAMOS function:
–
VAMOS channel multiplexing
For details, see 3.4 VAMOS Channel Multiplexing.
–
VAMOS channel demultiplexing
For details, see 3.5 VAMOS Channel Demultiplexing.
–
VAMOS power control
For details, see 3.6 VAMOS Power Control.
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VAMOS Feature Parameter Description
3 Technical Description
3.1 MS VAMOS Capabilities
l
SAIC MS
An MS that supports the SAIC technique is called an SAIC MS. SAIC MSs have strong
anti-interference capabilities, and therefore they can be used for VAMOS channel
multiplexing.
l
VAMOS MS
VAMOS MSs were introduced at the same time as the VAMOS technique. Channel
multiplexing brings more considerable gains when performed on VAMOS MSs than
when performed on SAIC MSs. Therefore, if an MS is enabled with the VAMOS I&II
Support feature and supports both the SAIC and VAMOS techniques, the Huawei base
station subsystem (BSS) considers the MS as a VAMOS MS. Only few commercial MSs
support VAMOS.
l
TSC
To support VAMOS channel multiplexing, any two MSs to be multiplexed (including
SAIC MSs and VAMOS MSs) must use two orthogonal TSCs.
3.1.1 SAIC MS
SAIC capability of MSs
An MS reports its SAIC capability in the Downlink Advanced Receiver Performance field of
the additional mobile station classmark information element (IE) in the Classmark Change
message. Table 3-1 lists the mapping between Downlink Advanced Receiver Performance
values and SAIC capabilities. To allow the BSC to obtain MS Classmark information earlier,
enable the ECSC function. For details, see ECSC. To learn more Classmark information, see
3GPP TS 24.008 V9.7.0 and later specifications.
Table 3-1 Mapping between Downlink Advanced Receiver Performance values and SAIC
capabilities
Downlink Advanced Receiver
Performance
SAIC Capability
00
Non-SAIC
01
SAIC
10
SAIC
11
SAIC
To enable the BSC to obtain an MS's SAIC capability contained in Mobile Station Classmark
3, enable the early classmark sending control (ECSC) function. For details about this function,
see section ECSC in 4.1.3 Impacted Features. For more information about Mobile Station
Classmark 3, see 3GPP TS 24.008 V9.7.0 or later. The Mobile Station Classmark 3 IE reports
MSs that support SAIC as non-SAIC MSs, which decreases the capacity gains delivered by
VAMOS. Huawei introduces the GBFD-115831 Mute SAIC MS Identification feature to
identify this type of MS. For details, see Mute SAIC MS Identification Feature Parameter
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VAMOS Feature Parameter Description
3 Technical Description
Description. Table 3-2 lists the mapping between SAIC capabilities reported in Mobile
Station Classmark 3 and SAIC capabilities actually supported by MSs.
Table 3-2 Mapping between reported SAIC capabilities and actual SAIC capabilities
SAIC Capability Reported in Mobile
Station Classmark 3
Actual SAIC Capability
Non-SAIC
Non-SAIC
SAIC (mute SAIC)
SAIC
SAIC
SAIC capability of the Huawei BSS
When the Network Support SAIC feature is activated on Huawei BSS side, Huawei BSS has
the SAIC capability. Otherwise, Huawei BSS does not have the SAIC capability.
3.1.2 VAMOS MS
l
VAMOS capability of MSs
An MS reports its VAMOS capability in the VAMOS Level field of the additional mobile
station classmark IE in the Classmark Change message. Table 3-3 lists the mapping
between VAMOS levels and VAMOS capabilities.
Table 3-3 Mapping between VAMOS levels and VAMOS capabilities
VAMOS Level
VAMOS Capability
00
Non-VAMOS
01
VAMOS I
10
VAMOS II
11
VAMOS II
To enable the BSC to obtain an MS's SAIC capability contained in Mobile Station
Classmark 3, enable the ECSC function. For details about this function, see section
ECSC in 4.1.3 Impacted Features. For more information about Mobile Station
Classmark 3, see 3GPP TS 24.008 V9.7.0 or later.
l
VAMOS MS capability of the Huawei BSS
When the license for the VAMOS I&II Support feature is activated on the Huawei BSS
and the VamosMSEnable(BSC6900,BSC6910) parameter is set to ON(On), the Huawei
BSS supports VAMOS MSs. Otherwise, the Huawei BSS does not support VAMOS
MSs.
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VAMOS Feature Parameter Description
3 Technical Description
NOTE
Some MSs report their VAMOS capabilities only when the MSC protocol version is R99 or above.
You are advised to set the MSCVER(BSC6900,BSC6910)parameter in the SET
GCELLCCUTRANSYS command to R99_or_above for such MSs.
3.1.3 TSC
To support VAMOS channel multiplexing, the two MSs to be multiplexed must use
orthogonal TSCs. The VAMOS function provided by Huawei supports the following
combinations of orthogonal TSCs:
l
New TSC+old TSC
A set of TSCs (numbered 0 through 7) defined after VAMOS was introduced are called
new TSCs. A set of TSCs (numbered 0 through 7) defined before VAMOS was
introduced are called old TSCs. Therefore, the same TSC number has a different
meaning for a new TSC than for an old TSC. Two TSCs with the same number are
orthogonal to each other. For details, see 3GPP TS 45.002.
Only VAMOS I and VAMOS II MSs can use new TSCs to pair with old TSCs. When a
VAMOS I or VAMOS II MS is paired with another type of MS for VAMOS channel
multiplexing, the VAMOS I or VAMOS II MS preferentially uses a new TSC and the
other MS uses an old TSC.
l
Primary TSC+secondary TSC
Huawei introduces the primary and secondary TSCs for MSs that can only use old TSCs.
To configure the primary and secondary TSCs for a cell, set the VamosMainTsc and
VamosSubTsc parameters to appropriate values. A Huawei BSS considers a TSC pair as
approximately orthogonal if the primary and secondary TSCs are paired as shown in
Table 3-4.
Table 3-4 TSC pairs when two calls using old TSCs are multiplexed onto the same voice
channel
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Primary TSC
Secondary TSC
0
2
1
7
2
0
3
4
4
3
5
6
6
5
7
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3 Technical Description
3.2 White SAIC MS Identification
The problem SAIC MS identification function identifies the problem SAIC MSs that can
perform alpha hopping modulation. The identified MSs that can perform alpha-QPSK
modulation are called white SAIC MSs.
The white SAIC MS identification function identifies white SAIC MSs from problem SAIC
MSs that support alpha hopping modulation by checking calls initiated or terminated by MSs
of the same model. The BSC records identified white SAIC MSs in the SAIC MS capability
database and performs VAMOS channel multiplexing for these MSs by using the alpha-QPSK
modulation. Therefore, this function helps improve the performance of the VAMOS function.
To support the white SAIC MS identification function, the SAIC MS capability database must
contain information about problem SAIC MSs that support alpha hopping modulation.
However, such information is not automatically saved in the SAIC MS capability database.
Obtain such information by using either of the following method:
l
Enabling the problem SAIC MS identification function in the VAMOS Call Drop
Solution feature
l
Importing such information from other BSCs into the SAIC MS capability database by
running an MML command (EXP MSSAICCAPMML)
l
Using the automatic SAIC MS capability sharing function
In the SAIC MS capability database, the MSs whose ProSAICFlag(BSC6900,BSC6910) is
set to JUMP_ALPHA(Alpha hopping modulation or Alpha-QPSK modulation) are
problem SAIC MSs that support alpha hopping modulation. For details about the problem
SAIC MS identification function see VAMOS Call Drop Solution Feature Parameter
Description.
The white SAIC MS identification function is controlled by the
SaicWhtMsIdentSw(BSC6900,BSC6910) parameter. This function is described in the
following sections:
l
White SAIC MS Identification per Call
The BSS detects a call that meets the detection criteria only once and records the
detection results. This section describes the procedure for identifying a white SAIC MS
per call.
l
Final Result for White SAIC MS Identification
The BSS provides the detection result for SAIC MSs of the same model. This section
describes how to obtain the final identification result by MS type based on the result of
the white SAIC MS identification per call.
l
SAIC MS Capability Database Maintenance
The final identification results for white SAIC MSs must recorded in the SAIC MS
capability database so that the VAMOS function can be used. This section describes two
methods for maintaining the SAIC MS capability database.
3.2.1 White SAIC MS Identification per Call
Both the BSC and BTS implement this function. The BSC initiates the identification and
saves the identification result, and the BTS performs the identification procedure. Upon
receiving an Establish Indication message over the traffic channel (TCH) from the BTS, the
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VAMOS Feature Parameter Description
3 Technical Description
BSC checks whether a call meets the requirements for white SAIC MS identification per call.
If the call meets the requirements, the BSC initiates the identification procedure. Figure 3-1
shows the procedure for white SAIC MS identification per call.
Figure 3-1 Procedure for white SAIC MS identification per call
1.
The BSC sends a White SAIC MS Identify message to instruct the BTS to start the white
SAIC MS identification per call only when both the cell and the call meet specific
identification requirements. This is because the white SAIC MS identification per call is
a cell-level function. For details about the identification requirements, see Trigger
Conditions.
2.
Upon receiving the White SAIC MS Identify message, the BTS sends a White SAIC MS
Identify ACK message to the BSC and starts the white SAIC MS identification. For
details about the identification requirements, see Working Principles.
3.
After the identification procedure ends, the BTS carries the result in the White SAIC MS
Identify Report message to the BSC, informing the BSC of the identification result.
4.
Upon receiving the White SAIC MS Identify Report message, the BSC sends a White
SAIC MS Identify Response message to the BTS.
Trigger Conditions
The BSC triggers a white SAIC MS identification for problem SAIC MSs that support alpha
hopping modulation when both the cells and the calls meet the required conditions.
Cell Conditions
The BSC can start the white SAIC MS identification for a call in a cell only when the cell
meets all of the following conditions:
l
SaicWhtMsIdentSw(BSC6900,BSC6910) is set to ON(On).
l
The cell load is less than or equal to the value of SpeMsIdeLoad(BSC6900,BSC6910).
l
The total number of times that the BSC is performing mute SAIC MS identification,
problem SAIC MS identification, and white SAIC MS identification is less than the
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value of SpeMsIdeMaxCalls(BSC6900,BSC6910). For details about the mute SAIC MS
identification function, see Mute SAIC MS Identification Feature Parameter
Description. For details about the problem SAIC MS identification function, see
VAMOS Call Drop Solution Feature Parameter Description.
Call Conditions
The BSC sends a message to the BTS, instructing it to start a white SAIC MS identification
per call only when the call meets all of the following conditions:
l
If the call occupies a half-rate traffic channel (TCH/H), a white SAIC MS detection is
allowed only when HRMsIdeAllowed(BSC6900,BSC6910) is set to ON(On).
l
The call meets all of the following conditions for the period specified by
SpeMsIdeLastTimes(BSC6900,BSC6910) within the period specified by
SpeMsIdeStatTimes(BSC6900,BSC6910):
–
The uplink receive level of the call is greater than or equal to the value of
SpeMsIdeUlRxlevThd(BSC6900,BSC6910).
–
The downlink receive level of the call is greater than or equal to the value of
SpeMsIdeDlRxlevThd(BSC6900,BSC6910).
–
The uplink receive quality is less than or equal to the value of
SpeMsIdeUlRxQualThd(BSC6900,BSC6910).
–
The downlink receive quality is less than or equal to the value of
SpeMsIdeDlRxQualThd(BSC6900,BSC6910).
–
The adaptive cell border (ATCB) of the call is greater than or equal to the value of
SpeMsIdeAtcbThd(BSC6900,BSC6910). The ATCB is the difference between the
downlink receive level and the receive level of the optimal neighboring cell.
Working Principles
Upon receiving the White SAIC MS Identify message from the BSC, the BTS alternately uses
the alpha-QPSK and GMSK modulation modes to send data on the downlink, as shown in
Figure 3-2. The GMSK modulation mode remains unchanged on the uplink. Based on the
downlink channel quality that is reported every 480 ms, the BTS obtains the difference
between the downlink burst quality modulated using the alpha-QPSK modulation and that
modulated using the GMSK modulation. Based on the difference, the BTS determines
whether the MS is a white SAIC MS.
Figure 3-2 Modulation mode changes during a white SAIC MS identification per call
As shown in Figure 3-2, the BTS alternately uses the GMSK and alpha-QPSK modulation
modes during the identification. Speech quality may deteriorate during the identification.
Therefore, SaicWhtIdentTotalTime(BSC6900,BSC6910) is used to determine the number of
identification periods. The modulation mode duration is fixed during an identification period
and is specified by SaicWhtIdentOnePrdTime(BSC6900,BSC6910). The identification
period is calculated as follows:
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Identification period = SaicWhtIdentTotalTime(BSC6900,BSC6910) × 2 ×
SaicWhtIdentOnePrdTime(BSC6900,BSC6910) × Measurement report period (480 ms)
During an identification period, the BSS identifies the white SAIC MS as follows:
The BSS compares the average downlink receive quality modulated using the GMSK and
alpha-QPSK modulation modes to obtain their difference. If the difference is greater than the
value of SaicWhtAvgRxQualBadThld(BSC6900,BSC6910), the BSS determines that the
downlink is abnormal.
l
If the number of times that the BSS determines that the downlink is abnormal exceeds
the value of SaicWhtAvgAbnTimesThld(BSC6900,BSC6910), the BTS considers the
MS as a non-white-SAIC MS.
l
Otherwise, the BTS considers the MS as a white SAIC MS.
3.2.2 Final Result for White SAIC MS Identification
A white SAIC MS identification per call procedure checks only one alpha value. To ensure
that the alpha-QPSK modulation mode is completely checked, all the alpha values modulated
by alpha-QPSK must be checked in the final white SAIC MS identification. The alpha value
range is determined by SaicWhtMsIdentAlphaUpThld(BSC6900,BSC6910) and
SaicWhtMsIdentAlphaLwrThld(BSC6900,BSC6910). For MSs of each model, the BSS
checks all alpha values between the upper alpha threshold and the lower alpha threshold. The
BSS considers an MS as a white SAIC MS only when the check results for all the alpha
values indicate a white SAIC MS.
The result of a white SAIC MS identification per call is occasional and may be inaccurate.
Therefore, the identification must be performed for multiple times for the same alpha value.
Based on the multiple identification results, the BSS can obtain a more accurate result.
Huawei BSS checks an alpha value for n times, where n is specified by
SaicWhtMsIdentReqTimes(BSC6900,BSC6910). Each detection is a white SAIC MS
identification per call procedure.
l
If the number of times an MS is detected as a white SAIC MS is greater than or equal to
the value of SaicWhtMsIdentSatTimes(BSC6900,BSC6910), the BSS considers the MS
as a white SAIC MS.
l
If the number of times is less than the value of
SaicWhtMsIdentSatTimes(BSC6900,BSC6910), the BSS considers the MS as a nonwhite-SAIC MS.
3.2.3 SAIC MS Capability Database Maintenance
The identification results for white SAIC MSs are generated for MSs of the same model. The
results are saved in the database by type approval code (TAC).
l
When ProSAICFlag(BSC6900,BSC6910) corresponding to the TAC of a white SAIC
MS is set to ALPHA_QPSK(Alpha-QPSK), the BSS performs VAMOS channel
multiplexing for the white SAIC MS by using alpha-QPSK modulation.
l
When ProSAICFlag(BSC6900,BSC6910) corresponding to the TAC of a white SAIC
MS is set to JUMP_ALPHA(Alpha hopping modulation or Alpha-QPSK
modulation), the BSS performs VAMOS channel multiplexing for non-white-SAIC MSs
by using alpha hopping modulation.
The final identification result for white SAIC MSs cannot be automatically saved in the SAIC
MS capability database. Run an MML command (EXP MSSAICCAPMML) to import the
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result into the database or obtain the result using the automatic SAIC MS capability sharing
function.
For details about the database format and data import, see VAMOS Call Drop Solution
Feature Parameter Description.
3.3 Modulation and Demodulation
To support the VAMOS function, the BTS uses the successive interference cancellation (SIC)
demodulation mode in the uplink and the alpha-QPSK modulation mode in the downlink.
QPSK refers to quaternary phase shift keying.
l
SIC demodulation
VAMOS MSs A and B use the Gaussian minimum shift-frequency keying (GMSK)
technique to modulate signals in the uplink and then use their respective antennas to
transmit uplink signals. Meanwhile, the BTS uses two or more antennas to receive
signals in the same timeslot. Upon receiving a signal from the MSs, the BTS uses the
SIC technique to demodulate the signal into two independent uplink signals.
l
Alpha-QPSK modulation
In the alpha-QPSK modulation mode, the BTS maps the data of the two VAMOS MSs
onto two bits of the QPSK symbol and sends the data in orthogonal TSCs. Then, the two
MSs obtain their respective downlink signals after demodulation. If the
VamosFacchEnhance parameter is set to ON(On), the BSS automatically changes the
modulation mode over the fast associated control channel (FACCH) from alpha-QPSK to
GMSK when the radio environment quality is poor. This improves downlink
demodulation performance.
Figure 3-3 VAMOS modulation and demodulation
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3.4 VAMOS Channel Multiplexing
VAMOS channel multiplexing is a function in which two calls can be multiplexed onto the
same voice channel. To support this function, the two calls must be candidate VAMOS calls.
A Huawei BSC selects an appropriate channel type based on the cell load and type of
candidate VAMOS calls. Then, the BSC triggers VAMOS channel multiplexing using an
intra-cell handover or the assignment procedure.
3.4.1 VAMOS Channel
Before the VAMOS function was introduced to GSM networks, voice channels consisted of
two types: TCHF and TCHH. After the VAMOS function was introduced, VAMOS FR (VFR
for short) channel and VAMOS HR (VHR for short) channel were added to voice channels. A
VFR channel is a TCHF onto which two VAMOS calls are multiplexed, and a VHR channel is
a TCHH onto which two VAMOS calls are multiplexed. In addition, a 16 kbit/s timeslot may
carry multiple types of channels. Table 3-5 describes these types of channels.
Table 3-5 Types of channels that may be carried on a 16 kbit/s timeslot
Channel
Type
Number of
Calls Carried
Call
Multiplexin
g Mode
Bandwidth Occupied by Each
Call (kbit/s)
TCHF
1
16
TCHH
2
8
VFR
2
16
TCHH+VHR
3
TCHH (carrying one call): 8
VHR (carrying two calls): 8 each
VHR
4
8
NOTE
Two calls can be multiplexed onto one VHR channel and two calls can be multiplexed onto one VFR
channel only after you have purchased the VAMOS and the VAMOS FR licenses, respectively.
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3.4.2 Candidate VAMOS Call
Candidate VAMOS calls consist of two types: candidate VFR calls and candidate VHR calls.
If a call in a cell meets both the cell control conditions and cell level & quality conditions, the
BSC adds the call to the candidate VAMOS call queue. Otherwise, the BSC will not add the
call to the candidate VAMOS call queue or will delete the call from the queue. The following
sections describe these conditions.
Cell Control Conditions
The following conditions serve as prerequisites for a call (regardless of the call type) to
become a candidate VFR or VHR call:
l
The MultAllowBeforeConn parameter is set to ON(On). Alternatively, the
MultAllowBeforeConn parameter is set to OFF(Off) and the BSS has received a
Connect ACK message from the MS.
l
The call meets the cell control conditions for candidate VFR and VHR calls based on the
current call type.
Table 3-6 describes the cell control conditions.
Table 3-6 Cell control conditions for candidate VAMOS calls
Issue 03 (2015-09-07)
Call
Type
Setting of
VamosSwi
tch
Other Requirements
for Parameter Setting
Qualified for
a Candidate
VFR Call
Qualified for a
Candidate
VHR Call
FR
VFR(VFR)
N/A
Yes
N/A
FR
VHR(VHR)
FRToVHREnable is set
to ON(On).
N/A
Yes
FR
VHR(VHR)
FRToVHREnable is set
to OFF(Off).
N/A
No
FR
ON(On)
N/A
Yes
Yes
HR
VFR(VFR)
N/A
No
N/A
HR
VHR(VHR)
N/A
N/A
Yes
HR
ON(On)
N/A
No
Yes
VFR
VFR(VFR)
N/A
No
N/A
VFR
VHR(VHR)
N/A
N/A
N/A
VFR
ON(On)
VFRToVHREnable is
set to ON(On).
No
Yes
VFR
ON(On)
VFRToVHREnable is
set to OFF(Off).
No
No
VHR
VFR(VFR)
N/A
N/A
N/A
VHR
VHR(VHR)
N/A
N/A
No
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Call
Type
Setting of
VamosSwi
tch
Other Requirements
for Parameter Setting
Qualified for
a Candidate
VFR Call
Qualified for a
Candidate
VHR Call
VHR
ON(On)
N/A
No
No
NA
OFF(Off)
N/A
N/A
N/A
Cell Level & Quality Conditions
A call in a cell periodically checks whether it is qualified to become a candidate VFR or VHR
call in measurement reports (MRs). Specifically, the BSS determines whether a call meets the
following conditions for the period specified by VamosOldCallLastTimes within the period
specified by VamosOldCallStatTimes:
l
Conditions for becoming a candidate VHR call (if the call is in a common cell or in the
underlaid subcell of a concentric cell)
–
The adaptive cell border (ATCB) meets the conditions listed in Table 3-7.
NOTE
The ATCB refers to the difference between the downlink receive level and the optimal neighboring cell
level of a call.
Table 3-7 ATCB conditions for becoming a candidate VHR call (if the call is in a common
cell or in the underlaid subcell of a concentric cell)
MS Type
ATCB Condition
Non-SAIC
ATCB ≥ VamosIntraHoNoneSaicAtcbThd
SAIC
ATCB ≥ VamosIntraHoSaicAtcbThd
VAMOS I
ATCB ≥ VamosIntraHoVamos1AtcbThd
VAMOS II
ATCB ≥ VamosIntraHoVamos2AtcbThd
l
Uplink receive level ≥ VamosIntraHoUlRxlevThd
l
Downlink receive level ≥ VamosIntraHoDlRxlevThd
l
Uplink receive quality ≤ VamosIntraHoUlQualThd
l
Downlink receive quality ≤ VamosIntraHoDlQualThd
l
Uplink level difference between main and diversity ≤ VamosAntUlRxlevDiffThd
l
Conditions for becoming a candidate VHR call (if the call is in the overlaid subcell of a
concentric cell)
–
Issue 03 (2015-09-07)
The ATCB meets the conditions listed in Table 3-8.
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Table 3-8 ATCB conditions for becoming a candidate VHR call (if the call is in the
overlaid subcell of a concentric cell)
MS Type
ATCB Condition
Non-SAIC
ATCB ≥ VamosIntraHoNoneSaicAtcbThd +
VamosIuoInnerAtcbThd
SAIC
ATCB ≥ VamosIntraHoSaicAtcbThd + VamosIuoInnerAtcbThd
VAMOS I
ATCB ≥ VamosIntraHoVamos1AtcbThd + VamosIuoInnerAtcbThd
VAMOS II
ATCB ≥ VamosIntraHoVamos2AtcbThd + VamosIuoInnerAtcbThd
l
Uplink receive level ≥ VamosIntraHoUlRxlevThd + VAMOSOLRXLEVOFT
l
Downlink receive level ≥ VamosIntraHoDlRxlevThd + VAMOSOLRXLEVOFT
l
Uplink receive quality ≤ VamosIntraHoUlQualThd – VAMOSOLRXQUALOFT
l
Downlink receive quality ≤ VamosIntraHoDlQualThd – VAMOSOLRXQUALOFT
l
Uplink level difference between main and diversity ≤ VamosAntUlRxlevDiffThd
l
Conditions for becoming a candidate VFR call (if the call is in a common cell or in the
underlaid subcell of a concentric cell)
–
The ATCB meets the conditions listed in Table 3-9.
Table 3-9 ATCB conditions for becoming a candidate VFR call (if the call is in a
common cell or in the underlaid subcell of a concentric cell)
MS Type
ATCB Condition
Non-SAIC
ATCB ≥ VamosIntraHoNoneSaicAtcbThd + VFRAtcbOffset
SAIC
ATCB ≥ VamosIntraHoSaicAtcbThd + VFRAtcbOffset
VAMOS I
ATCB ≥ VamosIntraHoVamos1AtcbThd + VFRAtcbOffset
VAMOS II
ATCB ≥ VamosIntraHoVamos2AtcbThd + VFRAtcbOffset
l
Uplink receive level ≥ VamosIntraHoUlRxlevThd + VFRRxlevOffset
l
Downlink receive level ≥ VamosIntraHoDlRxlevThd + VFRRxlevOffset
l
Uplink receive quality ≤ VamosIntraHoUlQualThd + VFRQualOffset
l
Downlink receive quality ≤ VamosIntraHoDlQualThd + VFRQualOffset
l
Uplink level difference between main and diversity ≤ VamosAntUlRxlevDiffThd
l
Conditions for becoming a candidate VFR call (if the call is in the overlaid subcell of a
concentric cell)
–
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The ATCB meets the conditions listed in Table 3-10.
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Table 3-10 ATCB conditions for becoming a candidate VFR call (if the call is in the
overlaid subcell of a concentric cell)
MS Type
ATCB Condition
Non-SAIC
ATCB ≥ VamosIntraHoNoneSaicAtcbThd +
VamosIuoInnerAtcbThd + VFRAtcbOffset
SAIC
ATCB ≥ VamosIntraHoSaicAtcbThd + VamosIuoInnerAtcbThd +
VFRAtcbOffset
VAMOS I
ATCB ≥ VamosIntraHoVamos1AtcbThd + VamosIuoInnerAtcbThd
+ VFRAtcbOffset
VAMOS II
ATCB ≥ VamosIntraHoVamos2AtcbThd + VamosIuoInnerAtcbThd
+ VFRAtcbOffset
l
Uplink receive level ≥ VamosIntraHoUlRxlevThd + VAMOSOLRXLEVOFT +
VFRRxlevOffset
l
Downlink receive level ≥ VamosIntraHoDlRxlevThd + VAMOSOLRXLEVOFT +
VFRRxlevOffset
l
Uplink receive quality ≥ VamosIntraHoUlQualThd – VAMOSOLRXQUALOFT +
VFRQualOffset
l
Downlink receive quality ≤ VamosIntraHoDlQualThd - VAMOSOLRXQUALOFT +
VFRQualOffset
l
Uplink level difference between main and diversity ≤ VamosAntUlRxlevDiffThd
Candidate VAMOS Call Queuing
The OptVAMOSChnMulAlg parameter determines how candidate VAMOS calls are queued.
l
If OptVAMOSChnMulAlg is set to YES(Yes):
Candidate VAMOS calls are queued according to their receive quality in ascending order. If
the receive quality is the same for all calls, candidate VAMOS calls are queued according to
their ATCB values in descending order.
NOTE
The receive quality refers to the smaller of the uplink receive quality and the downlink receive quality.
l
If OptVAMOSChnMulAlg is set to NO(No):
Candidate VAMOS calls are queued according to their path losses in ascending order.
3.4.3 VAMOS Channel Multiplexing Using an Intra-Cell
Handover
The VamosIntraHoSwitch parameter controls whether to enable VAMOS channel
multiplexing using an intra-cell handover. If this parameter is set to ON(On), the BSC
periodically selects appropriate channel types for channel multiplexing based on cell load and
the configured thresholds. Then, the BSC selects two calls from the candidate VAMOS call
queue in order and determines whether the two calls can be paired. If the two calls can be
paired, the BSC triggers an intra-cell handover on one call and then multiplexes the two calls
onto one voice channel.
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Channel Multiplexing Type
The BSC selects different channel multiplexing types based on cell load. Figure 3-4 shows
the details.
Figure 3-4 Channel multiplexing type (multiplexing using an intra-cell handover)
As shown in Figure 3-4:
l
If cell load is lower than the VFR channel multiplexing load threshold (handover), the
BSC uses the procedure of allocating common channels.
l
If cell load is greater than or equal to the VFR channel multiplexing load threshold
(handover) and lower than the VHR channel multiplexing load threshold (handover), the
BSC preferentially performs VFR channel multiplexing. If this operation fails, the BSC
uses the procedure of allocating common channels.
l
If cell load is greater than or equal to the VHR channel multiplexing load threshold
(handover), the BSC preferentially performs VHR channel multiplexing on an FR, HR,
or VFR channel in descending order. If this operation fails, the BSC performs VFR
channel multiplexing on an FR channel. If all of the preceding operations fail, the BSC
uses the procedure of allocating common channels.
Huawei BSC provides different parameters corresponding to the VFR and VHR channel
multiplexing load thresholds (handover) in different scenarios. Table 3-11 lists these
parameters.
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Table 3-11 Threshold-related parameters for VAMOS channel multiplexing using an intra-cell
handover
Item
If the Call Is in
a Common Cell
If the Call Is in
the Underlaid
Subcell of a
Concentric Cell
If the Call Is in the
Overlaid Subcell of a
Concentric Cell
Parameter
corresponding to the
VFR channel
multiplexing load
threshold
(handover)
VFRLoadThd
VFRLoadThd
VFRIuoInnerLoadThd
Parameter
corresponding to the
VHR channel
multiplexing load
threshold
(handover)
VamosMultLoad
Thd
VamosMultLoadT
hd
VamosIuoInnerLoadTh
d
Candidate VAMOS Call-Candidate VAMOS Call Pairing Conditions
The BSC successively selects two calls from the candidate VAMOS call queue according to
the selected channel multiplexing type. The two candidate VAMOS calls can be paired if all
of the following conditions are met:
l
The path loss difference between the two calls is less than or equal to
VamosPathLossMaxDiffValue.
l
If the VamosNoneSaicAllow parameter is set to OFF(Off), a VAMOS I MS cannot be
paired with a non-SAIC MS and an SAIC MS cannot be paired with a non-SAIC MS.
l
If one MS is an SAIC MS and uses an old TSC and the other MS is a VAMOS MS and
uses an old TSC, the call initiated by the SAIC MS cannot be multiplexed onto the call
initiated by the VAMOS MS. In other situations, two calls can be multiplexed onto one
voice channel. For descriptions about new and old TSCs, see 3.1.3 TSC.
Handover Trigger Conditions
l
l
If two candidate VAMOS calls can be paired for VHR channel multiplexing, an intra-cell
handover is triggered differently depending on the following conditions:
–
If only one of the two TRXs that carry the two calls has the VAMOS license, the
call carried by the TRX that does not have the license is handed over to the TRX
that does.
–
If both TRXs have the VAMOS license, the call carried by the TRX with a heavier
load is handed over to the TRX with a lighter load.
If two candidate VAMOS calls can be paired for VFR channel multiplexing, an intra-cell
handover is triggered differently depending on the following conditions:
–
Issue 03 (2015-09-07)
If only one of the two TRXs that carry the two calls has the VAMOS FR license, the
call carried by the TRX that does not have the license is handed over to the TRX
that does.
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–
l
3 Technical Description
If both TRXs have the VAMOS FR license, the call carried by the TRX with a
heavier load is handed over to the TRX with a lighter load.
If two candidate VAMOS calls cannot be paired, no intra-cell handover is triggered.
TSC Selection for a Call After a Handover
If the call that initially accesses a cell is a common call (regardless of whether it is initiated by
an SAIC MS or a VAMOS MS), the primary TSC of the old TSCs is used by default. When
two calls perform VAMOS channel multiplexing using an intra-cell handover, the TSCs
selected by the two calls must be orthogonal. For example, call 1 is about to be handed over,
and call 2 is not to be handed over. The Huawei BSS selects a TSC for call 1 after a handover
based on the MS types and TSC types of call 1 and call 2. If VamosMSEnable is set to
ON(On), the TSC selection principles are described in Table 3-12. If VamosMSEnable is set
to OFF(Off), the BSS considers the VAMOS MS as an SAIC MS and uses only the primary
and secondary TCSs to form a pair for VAMOS channel multiplexing.
Table 3-12 Principle for selecting a TSC for call 1 after a handover
MS Type
for Call 1
TSC Type
for Call 1
MS Type
for Call 2
TSC Type
for Call 2
TSC-Selecting Principle
SAIC MS
Old TSC
SAIC MS
Old TSC
If the old TSC for call 2 is the
primary TSC, the secondary
TSC is selected.
If the old TSC for call 2 is the
secondary TSC, the primary
TSC is selected.
Issue 03 (2015-09-07)
SAIC MS
Old TSC
VAMOS
MS
New TSC
The old TSC that is the same
as the new TSC for call 2 is
selected.
SAIC MS
Old TSC
VAMOS
MS
Old TSC
The two calls cannot be
paired, and VAMOS channel
multiplexing is not
performed.
VAMOS
MS
Old TSC
SAIC MS
Old TSC
The new TSC that is the same
as the old TSC for call 2 is
selected.
VAMOS
MS
Old TSC
VAMOS
MS
Old TSC
The new TSC that is the same
as the old TSC for call 2 is
selected.
VAMOS
MS
Old TSC
VAMOS
MS
New TSC
The old TSC that is the same
as the new TSC for call 2 is
selected.
VAMOS
MS
New TSC
SAIC MS
Old TSC
The new TSC that is the same
as the old TSC for call 2 is
selected.
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MS Type
for Call 1
TSC Type
for Call 1
MS Type
for Call 2
TSC Type
for Call 2
TSC-Selecting Principle
VAMOS
MS
New TSC
VAMOS
MS
New TSC
The old TSC that is the same
as the new TSC for call 2 is
selected.
VAMOS
MS
New TSC
VAMOS
MS
Old TSC
The new TSC that is the same
as the old TSC for call 2 is
selected.
3.4.4 VAMOS Channel Multiplexing Using the Assignment
Procedure
VAMOS channel multiplexing using the assignment procedure enables a new call and a call in
the candidate VAMOS call queue to be quickly multiplexed onto one voice channel,
expanding network capacity. The VamosAssSwitch parameter controls whether to enable the
function. The BSS performs VAMOS channel multiplexing using the assignment procedure
only if the VamosAssSwitch parameter is set to ON(On) and the cell load meets the
requirements described below. The assignment procedure is as follows: First, the new call
must meet the conditions for VAMOS channel multiplexing. Second, the BSS selects a
candidate VAMOS call that meets the pairing conditions from the queue. Finally, if the two
calls can be paired, the BSS assigns the new call to the voice channel occupied by the call
selected from the candidate VAMOS call queue.
Channel Multiplexing Type
The BSC selects different channel multiplexing types based on cell load. Figure 3-5 shows
the details.As shown in Figure 3-5: If cell load is lower than the VFR channel multiplexing
load threshold (assignment), the BSC uses the procedure of allocating common channels. If
cell load is greater than or equal to the VFR channel multiplexing load threshold (assignment)
and lower than the VHR channel multiplexing load threshold (assignment), the BSC
preferentially performs VFR channel multiplexing. If this operation fails, the BSC uses the
procedure of allocating common channels. If cell load is greater than or equal to the VHR
channel multiplexing load threshold (assignment), the BSC preferentially performs VHR
channel multiplexing. If this operation fails, the BSC performs VFR channel multiplexing. If
both of the preceding operations fail, the BSC uses the procedure of allocating common
channels.
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Figure 3-5 Channel multiplexing type (multiplexing using the assignment procedure)
Huawei BSC provides different parameters corresponding to the VFR and VHR channel
multiplexing load thresholds (assignment) in different scenarios. Table 3-13 lists these
parameters.
Table 3-13 Threshold-related parameters for VAMOS channel multiplexing using the
assignment procedure
Item
Common cell
If the Call Is in
the Underlaid
Subcell of a
Concentric Cell
If the Call Is in the
Overlaid Subcell of a
Concentric Cell
Parameter
corresponding to
the VFR channel
multiplexing load
threshold
(assignment)
VFRLoadThd(BSC
6900,BSC6910) +
VAMOSASSLOAD
OFT(BSC6900,BS
C6910)
VFRLoadThd(BS
C6900,BSC6910)
+
VAMOSASSLOA
DOFT(BSC6900,
BSC6910)
VFRIuoInnerLoadThd(
BSC6900,BSC6910) +
VAMOSASSLOADOFT(
BSC6900,BSC6910)
Parameter
corresponding to
the VHR channel
multiplexing load
threshold
(assignment)
VamosMultLoadTh
d(BSC6900,BSC69
10) +
VAMOSASSLOAD
OFT(BSC6900,BS
C6910)
VamosMultLoadT
hd(BSC6900,BSC
6910) +
VAMOSASSLOA
DOFT(BSC6900,
BSC6910)
VamosIuoInnerLoadTh
d(BSC6900,BSC6910) +
VAMOSASSLOADOFT(
BSC6900,BSC6910)
Trigger Conditions for VAMOS Channel Multiplexing on a New Call
The BSC multiplexes a new call with a suitable call from the candidate VAMOS call queue
onto one voice channel if the level and quality of the new call on an SDCCH meet all of the
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following conditions: There is a probability that the MS that has initiated a new call cannot
receive MRs over an SDCCH. If this occurs, the new call cannot meet the trigger conditions
of VAMOS channel multiplexing, and the success rate of VAMOS channel multiplexing using
the assignment procedure is affected. Therefore, it is recommended that the Waiting for MRs
over SDCCH function be enabled. For details about this function, see Waiting for MRs over
SDCCH.
l
Conditions for VHR channel multiplexing (if the new call is in a common cell or in the
underlaid subcell of a concentric cell)
–
ATCB
ATCB refers to the difference between the downlink receive level and optimal
neighboring cell level of a call. The ATCB meets the conditions listed in Table
3-14.
Table 3-14 ATCB conditions for VHR channel multiplexing (if the new call is in a
common cell or in the underlaid subcell of a concentric cell)
l
MS
Type
ATCB Condition
NonSAIC
ATCB ≥ VamosIntraHoNoneSaicAtcbThd(BSC6900,BSC6910) +
VamosAssMultAtcbOffset(BSC6900,BSC6910)
SAIC
ATCB ≥ VamosIntraHoSaicAtcbThd(BSC6900,BSC6910) +
VamosAssMultAtcbOffset(BSC6900,BSC6910)
VAMOS I
ATCB ≥ VamosIntraHoVamos1AtcbThd(BSC6900,BSC6910) +
VamosAssMultAtcbOffset(BSC6900,BSC6910)
VAMOS
II
ATCB ≥ VamosIntraHoVamos2AtcbThd(BSC6900,BSC6910) +
VamosAssMultAtcbOffset(BSC6900,BSC6910)
–
Uplink receive level ≥ VamosIntraHoUlRxlevThd + VamosAssDlRxlevThdOffset
–
Downlink receive level ≥ VamosIntraHoDlRxlevThd +
VamosAssDlRxlevThdOffset
–
Uplink receive quality ≤ VamosIntraHoUlQualThd – VamosAssUlQualThdOffset
–
Downlink receive quality ≤ VamosIntraHoDlQualThd –
VamosAssUlQualThdOffset
–
Uplink level difference between main and diversity ≤ VamosAntUlRxlevDiffThd
Conditions for VHR channel multiplexing (if the new call is in the overlaid subcell of a
concentric cell)
–
ATCB
ATCB refers to the difference between the downlink receive level and optimal
neighboring cell level of a call. The ATCB meets the conditions listed in Table
3-15.
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Table 3-15 ATCB conditions for VHR channel multiplexing (if the new call is in
the overlaid subcell of a concentric cell)
l
MS
Type
ATCB Condition
NonSAIC
ATCB ≥ VamosIntraHoNoneSaicAtcbThd(BSC6900,BSC6910) +
VamosIuoInnerAtcbThd(BSC6900,BSC6910) +
VamosAssMultAtcbOffset(BSC6900,BSC6910)
SAIC
ATCB ≥ VamosIntraHoSaicAtcbThd(BSC6900,BSC6910) +
VamosIuoInnerAtcbThd(BSC6900,BSC6910) +
VamosAssMultAtcbOffset(BSC6900,BSC6910)
VAMOS I
ATCB ≥ VamosIntraHoVamos1AtcbThd(BSC6900,BSC6910) +
VamosIuoInnerAtcbThd(BSC6900,BSC6910) +
VamosAssMultAtcbOffset(BSC6900,BSC6910)
VAMOS
II
ATCB ≥ VamosIntraHoVamos2AtcbThd(BSC6900,BSC6910) +
VamosIuoInnerAtcbThd(BSC6900,BSC6910) +
VamosAssMultAtcbOffset(BSC6900,BSC6910)
–
Uplink receive level ≥ VamosIntraHoUlRxlevThd + VAMOSOLRXLEVOFT +
VamosAssDlRxlevThdOffset
–
Downlink receive level ≥ VamosIntraHoDlRxlevThd + VAMOSOLRXLEVOFT +
VamosAssDlRxlevThdOffset
–
Uplink receive quality ≤ VamosIntraHoUlQualThd – VAMOSOLRXQUALOFT
– VamosAssUlQualThdOffset
–
Downlink receive quality ≤ VamosIntraHoDlQualThd –
VAMOSOLRXQUALOFT – VamosAssUlQualThdOffset
–
Uplink level difference between main and diversity ≤ VamosAntUlRxlevDiffThd
Conditions for VFR channel multiplexing (if the new call is in a common cell or in the
underlaid subcell of a concentric cell)
–
ATCB
ATCB refers to the difference between the downlink receive level and optimal
neighboring cell level of a call. The ATCB meets the conditions listed in Table
3-16.
Table 3-16 ATCB conditions for VFR channel multiplexing (if the new call is in a
common cell or in the underlaid subcell of a concentric cell)
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MS
Type
ATCB Condition
NonSAIC
ATCB ≥ VamosIntraHoNoneSaicAtcbThd(BSC6900,BSC6910) +
VamosAssMultAtcbOffset(BSC6900,BSC6910) +
VFRAtcbOffset(BSC6900,BSC6910)
SAIC
ATCB ≥ VamosIntraHoSaicAtcbThd(BSC6900,BSC6910) +
VamosAssMultAtcbOffset(BSC6900,BSC6910) +
VFRAtcbOffset(BSC6900,BSC6910)
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l
3 Technical Description
MS
Type
ATCB Condition
VAMOS I
ATCB ≥ VamosIntraHoVamos1AtcbThd(BSC6900,BSC6910) +
VamosAssMultAtcbOffset(BSC6900,BSC6910) +
VFRAtcbOffset(BSC6900,BSC6910)
VAMOS
II
ATCB ≥ VamosIntraHoVamos2AtcbThd(BSC6900,BSC6910) +
VamosAssMultAtcbOffset(BSC6900,BSC6910) +
VFRAtcbOffset(BSC6900,BSC6910)
–
Uplink receive level ≥ VamosIntraHoUlRxlevThd + VamosAssDlRxlevThdOffset
+ VFRRxlevOffset
–
Downlink receive level ≥ VamosIntraHoDlRxlevThd +
VamosAssDlRxlevThdOffset + VFRRxlevOffset
–
Uplink receive quality ≤ VamosIntraHoUlQualThd – VamosAssUlQualThdOffset
+ VFRQualOffset
–
Downlink receive quality ≤ VamosIntraHoDlQualThd –
VamosAssUlQualThdOffset + VFRQualOffset
–
Uplink level difference between main and diversity ≤ VamosAntUlRxlevDiffThd
Conditions for VFR channel multiplexing (if the new call is in the overlaid subcell of a
concentric cell)
–
ATCB
ATCB refers to the difference between the downlink receive level and optimal
neighboring cell level of a call. The ATCB meets the conditions listed in Table
3-17.
Table 3-17 ATCB conditions for VFR channel multiplexing (if the new call is in the
overlaid subcell of a concentric cell)
Issue 03 (2015-09-07)
MS
Type
ATCB Condition
NonSAIC
ATCB ≥ VamosIntraHoNoneSaicAtcbThd(BSC6900,BSC6910) +
VamosIuoInnerAtcbThd(BSC6900,BSC6910) +
VamosAssMultAtcbOffset(BSC6900,BSC6910) + VFRAtcbOffset
SAIC
ATCB ≥ VamosIntraHoSaicAtcbThd(BSC6900,BSC6910) +
VamosIuoInnerAtcbThd(BSC6900,BSC6910) +
VamosAssMultAtcbOffset(BSC6900,BSC6910) +
VFRAtcbOffset(BSC6900,BSC6910)
VAMOS I
ATCB ≥ VamosIntraHoVamos1AtcbThd(BSC6900,BSC6910) +
VamosIuoInnerAtcbThd(BSC6900,BSC6910) +
VamosAssMultAtcbOffset(BSC6900,BSC6910) +
VFRAtcbOffset(BSC6900,BSC6910)
VAMOS
II
ATCB ≥ VamosIntraHoVamos2AtcbThd(BSC6900,BSC6910) +
VamosIuoInnerAtcbThd(BSC6900,BSC6910) +
VamosAssMultAtcbOffset(BSC6900,BSC6910) +
VFRAtcbOffset(BSC6900,BSC6910)
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–
Uplink receive level ≥ VamosIntraHoUlRxlevThd + VAMOSOLRXLEVOFT +
VamosAssDlRxlevThdOffset + VFRRxlevOffset
–
Downlink receive level ≥ VamosIntraHoDlRxlevThd + VAMOSOLRXLEVOFT +
VamosAssDlRxlevThdOffset + VFRRxlevOffset
–
Uplink receive quality ≤ VamosIntraHoUlQualThd – VAMOSOLRXQUALOFT
– VamosAssUlQualThdOffset + VFRQualOffset
–
Downlink receive quality ≤ VamosIntraHoDlQualThd –
VAMOSOLRXQUALOFT – VamosAssUlQualThdOffset + VFRQualOffset
–
Uplink level difference between main and diversity ≤ VamosAntUlRxlevDiffThd
New Call-Candidate VAMOS Call Pairing Conditions
If a new call meets the preceding trigger conditions, the BSC selects a call from the candidate
VAMOS call queue and determines whether the selected call can be paired with the new call.
The BSC decides that the two calls can be paired if all of the following conditions are met:
l
The path loss difference between the two calls is less than or equal to
VamosPathLossMaxDiffValue.
l
If the VamosNoneSaicAllow parameter is set to OFF(Off), a VAMOS I MS cannot be
paired with a non-SAIC MS and an SAIC MS cannot be paired with a non-SAIC MS.
l
If the new MS is an SAIC MS and uses an old TSC and the selected MS is a VAMOS
MS and uses an old TSC, the two calls initiated by the two MSs cannot be multiplexed
onto one voice channel. In other situations, two calls can be multiplexed onto one voice
channel. For descriptions about new and old TSCs, see 3.1.3 TSC.
New Call Assignment
l
If two calls can be paired, the BSC assigns the new call to the voice channel occupied by
the selected call, and the two calls are multiplexed onto the same channel.
l
If the two calls cannot be paired, the BSC allocates a common channel to the new call.
TSC Selection for a New Call
When a call initiates VAMOS channel multiplexing using the assignment procedure, the TSCs
used by the two calls must be orthogonal. The Huawei BSS selects a TSC for a new call based
on its MS type, the MS type of the ongoing call, and the TSC type of the ongoing call. If
VamosMSEnable is set to ON(On), the TSC selection principles are described in Table 3-18.
If VamosMSEnable is set to OFF(Off), the BSS considers the VAMOS MS as an SAIC MS
and uses only the primary and secondary TCSs to form a pair for VAMOS channel
multiplexing.
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Table 3-18 Principle for selecting a TSC for a new call
MS Type for the
New Call
MS Type for the
Ongoing Call
TSC Type for the
Ongoing Call
TSC-Selecting
Principle
SAIC MS
SAIC MS
Old TSC
If the old TSC for
the ongoing call is
the primary TSC,
the secondary TSC
is selected.
If the old TSC for
the ongoing call is
the secondary TSC,
the primary TSC is
selected.
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SAIC MS
VAMOS MS
New TSC
The old TSC that is
the same as the new
TSC for the ongoing
call is selected.
SAIC MS
VAMOS MS
Old TSC
The two calls cannot
be paired, and
VAMOS channel
multiplexing is not
performed.
VAMOS MS
SAIC MS
Old TSC
The new TSC that is
the same as the old
TSC for the ongoing
call is selected.
VAMOS MS
VAMOS MS
Old TSC
The new TSC that is
the same as the old
TSC for the ongoing
call is selected.
VAMOS MS
VAMOS MS
New TSC
The old TSC that is
the same as the new
TSC for the ongoing
call is selected.
VAMOS MS
SAIC MS
Old TSC
The new TSC that is
the same as the old
TSC for the ongoing
call is selected.
VAMOS MS
VAMOS MS
Old TSC
The new TSC that is
the same as the old
TSC for the ongoing
call is selected.
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3.5 VAMOS Channel Demultiplexing
VAMOS channel multiplexing expands network capacity at the expense of voice quality.
When voice quality deteriorates noticeably or network capacity is sufficient, the BSS
demultiplexes the multiplexed channels to improve voice quality. During VAMOS channel
demultiplexing, the BSS selects one of the two multiplexed calls and hands over the selected
call to an idle channel. Meanwhile, the BSS retains the other call on the VAMOS channel and
converts the VAMOS channel to a common channel.
3.5.1 VAMOS Channel Demultiplexing Due to BQ
VAMOS channel multiplexing may cause voice quality to deteriorate. If any of the two
multiplexed calls meets the trigger conditions of VAMOS channel demultiplexing due to bad
quality (BQ), the BSC performs VAMOS channel demultiplexing using different methods.
Trigger Conditions
VAMOS channel demultiplexing due to BQ is triggered if the VamosQualReuseSwitch
parameter is set to ON(On) and any of the following conditions is met for the duration
specified by VamosQualReuseLastTimes within the period specified by
VamosQualReuseStatTimes:
l
For VHR channel demultiplexing
–
If the call is in a common cell or in the underlaid subcell of a concentric cell:
Uplink receive quality ≥ VamosQualReuseUpLinkQualThd
or
Downlink receive quality ≥ VamosQualReuseDownLinkQualThd
–
If the call is in the overlaid subcell of a concentric cell:
Uplink receive quality ≥ VamosQualReuseUpLinkQualThd –
VAMOSDEPOLRXQUALOFT
or
Downlink receive quality ≥ VamosQualReuseDownLinkQualThd –
VAMOSDEPOLRXQUALOFT
l
For VFR channel demultiplexing
–
If the call is in a common cell or in the underlaid subcell of a concentric cell:
Uplink receive quality ≥ VamosQualReuseUpLinkQualThd +
VFRQualReuseOffset
or
Downlink receive quality ≥ VamosQualReuseDownLinkQualThd +
VFRQualReuseOffset
–
If the call is in the overlaid subcell of a concentric cell:
Uplink receive quality ≥ VamosQualReuseUpLinkQualThd –
VAMOSDEPOLRXQUALOFT + VFRQualReuseOffset
or
Downlink receive quality ≥ VamosQualReuseDownLinkQualThd –
VAMOSDEPOLRXQUALOFT + VFRQualReuseOffset
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Demultiplexing Methods
Of the two multiplexed calls, the BSS hands over the call with better voice quality to another
voice channel (a TCHF or TCHH) and restores the channel occupied by the other call to a
common channel.
3.5.2 Optimization of VAMOS Channel Demultiplexing Due to
BQ
The optimization of VAMOS channel demultiplexing due to BQ involves the following
aspects:
l
Preferentially triggering VAMOS channel demultiplexing using a handover when call
quality is poor
Background:
At the same time, a call may meet the trigger conditions of VAMOS channel
demultiplexing due to BQ, interference handover, BQ handover, and TCH/H-TCH/F
handover. However, when VAMOS is enabled, the majority of quality-based handovers
are triggered due to channel multiplexing. Therefore, VAMOS channel demultiplexing
due to BQ is preferentially optimized. However, the BSS may trigger another type of
quality-based handover on a call before the optimization, possibly resulting in a
handover failure or a call drop.
Optimization:
If the VamosQualUndoPntSwitch(BSC6900,BSC6910) parameter is set to ON(On) and
a quality-based handover is triggered for VAMOS calls, the BSS triggers the handover
only on the call with better voice quality and penalizes the other call. Specifically, the
BSC does not trigger any quality-based handovers for the call with BQ within the period
specified by the VamosQualUndoPntTimer(BSC6900,BSC6910) parameter.
Background:
After VAMOS channel demultiplexing due to BQ is triggered, poor quality calls may be
multiplexed again within a short period, and call drops are likely to occur.
Optimization:
When both VamosQualUndoPntSwitch(BSC6900,BSC6910) and
VamosBQDemuxPenSw(BSC6900,BSC6910) are set to ON(On), the BSS performs a
penalty on the call with BQ:
l
–
If VAMOS channel demultiplexing due to BQ is triggered within a duration less
than or equal to the sum of DATAQUAFLTLEN(BSC6900,BSC6910),
VamosQualReuseStatTimes(BSC6900,BSC6910), and a measurement report
period, the BSS does not allow the call with BQ to initiate VAMOS channel
multiplexing before the call ends.
–
If VAMOS channel demultiplexing due to BQ is triggered within a duration greater
than the sum of DATAQUAFLTLEN(BSC6900,BSC6910),
VamosQualReuseStatTimes(BSC6900,BSC6910), and a measurement report
period, the BSS does not trigger VAMOS channel multiplexing for the call with BQ
within the duration equal to the sum of
VamosQualUndoPntTimer(BSC6900,BSC6910) and
DATAQUAFLTLEN(BSC6900,BSC6910).
Triggering new VAMOS channel multiplexing on the call with better voice quality of the
two multiplexed calls
Background:
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After VAMOS channel demultiplexing due to BQ is triggered, the BSS hands over the
call with better voice quality to a TCH/F or TCH/H. However, if cell load is high,
channel multiplexing may be quickly performed on this call after channel
demultiplexing. This frequently triggers intra-cell handovers.
Optimization:
If VamosRrmAlgVer(BSC6900,BSC6910) is set to Phase_1(Phase_1), the BSS allows
new VAMOS channel multiplexing on another call and on the call with better voice
quality. For details, see 3.4.3 VAMOS Channel Multiplexing Using an Intra-Cell
Handover.
3.5.3 VAMOS Channel Demultiplexing Due to Light Cell Load
VAMOS channel demultiplexing improves voice quality when cell load decreases and channel
resources become sufficient in the cell. The VamosLoadReuseSwitch parameter controls
whether to enable VAMOS channel demultiplexing due to low cell load. If this parameter is
set to ON(On), the BSC periodically checks cell load and performs VFR or VHR channel
demultiplexing based on the cell load information.
Trigger Conditions
Figure 3-6 shows the trigger conditions of VAMOS channel demultiplexing due to low cell
load.
Figure 3-6 Trigger conditions of VAMOS channel demultiplexing due to low cell load
As shown in Figure 3-6:
l
If cell load is higher than or equal to the VHR channel demultiplexing load threshold, the
BSC does not trigger channel demultiplexing using a load-based handover.
l
If cell load is lower than the VHR channel demultiplexing load threshold and higher than
or equal to the VFR channel demultiplexing load threshold, the BSC triggers VHR
channel demultiplexing using a load-based handover.
l
If cell load is lower than the VFR channel demultiplexing load threshold, the BSC
preferentially triggers VHR channel demultiplexing using a load-based handover. If this
operation fails, the BSC triggers VFR channel demultiplexing using a load-based
handover.
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NOTE
l VHR channel multiplexing load threshold: This threshold can be a VHR channel multiplexing load
threshold (assignment) or a VHR channel multiplexing load threshold (handover). It is
recommended that this threshold be set to a value greater than the VFR channel multiplexing load
threshold.
l VFR channel multiplexing load threshold: This threshold can be a VFR channel multiplexing load
threshold (assignment) or a VFR channel multiplexing load threshold (handover). It is recommended
that this threshold be set to a value less than the VHR channel multiplexing load threshold and
greater than the VFR channel demultiplexing load threshold.
l VHR channel demultiplexing load threshold: The VamosLoadReuseLoadThd parameter specifies
this threshold.
l VFR channel demultiplexing load threshold: The VFRLoadReuseThd parameter specifies this
threshold.
Demultiplexing Methods
l
l
Channel demultiplexing on a VFR call
–
If VamosRrmAlgVer is set to Phase_0(Phase_0), the BSS randomly selects a pair
of multiplexed VFR calls and then performs channel demultiplexing on the two
calls. In addition, the BSS hands over the call with the larger ATCB value of the
two multiplexed calls to a TCHF and restores the channel occupied by the other call
to a TCHF.
–
If VamosRrmAlgVer is set to Phase_1(Phase_1), the BSS preferentially selects a
pair of multiplexed VFR calls with BQ, severe path losses, and small ATCB values
and then performs channel demultiplexing on the two calls. In addition, the BSS
hands over the call with better voice quality of the two multiplexed calls to a TCHF
and restores the channel occupied by the other call to a TCHF.
Channel demultiplexing on a VHR call
–
If VamosRrmAlgVer is set to Phase_0(Phase_0), the BSS randomly selects a pair
of multiplexed VHR calls and then performs channel demultiplexing on the two
calls. If both calls meet the conditions for becoming a candidate VFR call, the BSS
hands over the two calls to a TCHF for VFR channel multiplexing. Otherwise, the
BSS hands over the call with the larger ATCB value to a TCHH (or to a TCHF if no
TCHH is available) and restores the channel occupied by the other call to a TCHH.
–
If VamosRrmAlgVer is set to Phase_1(Phase_1), the BSS preferentially selects a
pair of multiplexed VHR calls with BQ, severe path losses, and small ATCB values
and then performs channel demultiplexing on the two calls. If both calls meet the
conditions for becoming a candidate VFR call, the BSS hands over the two calls to
a TCHF for VFR channel multiplexing. Otherwise, the BSS hands over the call with
better voice quality to a TCHH (or to a TCHF if no TCHH is available) and restores
the channel occupied by the other call to a TCHH.
3.6 VAMOS Power Control
The VAMOS technique enables two calls to be multiplexed onto one voice channel. In this
way, the voice signals of these two calls are simultaneously transmitted. This causes mutual
interference between the two calls and therefore adversely affects voice quality. In addition,
the power of the two calls' signals is superposed, causing interference across the entire
network. Uplink SIC power control and downlink alpha-QPSK power control are introduced
to reduce network interference. Unlike the power control on common calls, the power control
on VAMOS calls is always performed on the BTS with the parameters controlled by the BSC.
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3.6.1 Uplink Power Control
VAMOS uses SIC to demodulate the uplink data of two multiplexed calls.
To achieve this, SIC:
1.
Uses interference rejection combining (IRC) to demodulate the uplink data of the call
with a strong signal level.
2.
Uses interference cancellation to eliminate some interference produced by the call with a
strong signal level for the call with a weak signal level.
3.
Uses IRC to demodulate the uplink data of the call with a weak signal level.
The uplink power control algorithm synchronizes the MRs for two multiplexed calls and
performs a joint power control decision to keep the power of these calls within an acceptable
range. The SicPwrCtrlSwitch parameter controls whether to enable uplink power control.
The principles of uplink power control are similar to those of Huawei power control algorithm
III. The only difference is that, when making uplink power control decisions, the receive level
difference between two multiplexed calls must be within a certain range to facilitate
demodulation. The SicDiffHighThd parameter specifies the upper threshold of the receive
level difference. Table 3-19 lists the parameter mapping between uplink power control and
Huawei power control algorithm III.
Table 3-19 Parameter mapping between uplink power control and Huawei power control
algorithm III
Issue 03 (2015-09-07)
Uplink Power
Control
Huawei Power
Control
Algorithm III
Remarks
SicHRRxQualThd
ULHSREXQUAL
HIGHTHRED,
ULHSREXQUAL
LOWTHRED
Uplink power control algorithm uses a singlethreshold parameter, but Huawei power control
algorithm III uses dual-threshold parameters.
SicAmrHRRxQual
Thd
ULAHSREXQUA
LHIGHTHRED,
ULAHSREXQUA
LLOWTHRED
Uplink power control algorithm uses a singlethreshold parameter, but Huawei power control
algorithm III uses dual-threshold parameters.
SicFRRxQualThd
ULFSREXQUAL
HIGHTHRED,
ULFSREXQUAL
LOWTHRED
Uplink power control algorithm uses a singlethreshold parameter, but Huawei power control
algorithm III uses dual-threshold parameters.
SicAmrFRRxQual
Thd
ULAFSREXQUA
LHIGHTHRED,
ULAFSREXQUA
LLOWTHRED
Uplink power control algorithm uses a singlethreshold parameter, but Huawei power control
algorithm III uses dual-threshold parameters.
SicRxLvlThd
ULREXLEVHIG
HTHRED,
ULREXLEVLOW
THRED
Uplink power control algorithm uses a singlethreshold parameter, but Huawei power control
algorithm III uses dual-threshold parameters.
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3 Technical Description
Uplink Power
Control
Huawei Power
Control
Algorithm III
Remarks
SicRxLvlProFac
ULRXLEVPROT
ECTFACTOR
The parameters have the same meaning.
SicRxQualProFac
ULRXQUALPRO
TECTFACTOR
The parameters have the same meaning.
SicRxLvlAdjFac
ULREXLEVADJF
CTR
The parameters have the same meaning.
SicRxQualAdjFac
ULREXQUALAD
JFCTR
The parameters have the same meaning.
3.6.2 Downlink Power Control
VAMOS uses the alpha-QPSK modulation mode in the downlink. This modulation mode uses
the variable alpha to control the power ratio of multiplexed MSs and to further adjust the
power of multiplexed MSs. Downlink power control enables multiplexed MSs to work at the
lowest possible total power by setting alpha to an appropriate value. The
AlphaQpskCtrlSwitch parameter controls whether to enable downlink power control, and the
AlphaQpskAdjScope parameter specifies the range of alpha adjustment. The principles of
downlink power control are the same as those of Huawei power control algorithm III except
that for adjusting the alpha variable. Table 3-20 lists the parameter mapping between
downlink power control and Huawei power control algorithm III.
Table 3-20 Parameter mapping between downlink power control and Huawei power control
algorithm III
Downlink
Power Control
Huawei Power
Control
Algorithm III
Remarks
AlphaQpskHRRx
QualThd
DLHSREXQUAL
HIGHTHRED,
DLHSREXQUAL
LOWTHRED
Downlink power control uses a singlethreshold parameter, which specifies the
downlink quality level.
DLAHSREXQUA
LHIGHTHRED,
DLAHSREXQUA
LLOWTHRED
Downlink power control uses a singlethreshold parameter, which specifies the
downlink quality level.
AlphaQpskAmrH
RRxQualThd
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Huawei power control algorithm III uses dualthreshold parameters, which specify the
carrier-to-interference ratio (CIR).
Huawei power control algorithm III uses dualthreshold parameters, which specify the CIR.
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Downlink
Power Control
Huawei Power
Control
Algorithm III
Remarks
AlphaQpskFRRxQ
ualThd
DLFSREXQUAL
HIGHTHRED,
DLFSREXQUAL
LOWTHRED
Downlink power control uses a singlethreshold parameter, which specifies the
downlink quality level.
DLAFSREXQUA
LHIGHTHRED,
DLAFSREXQUA
LLOWTHRED
Downlink power control uses a singlethreshold parameter, which specifies the
downlink quality level.
AlphaQpskRxLvlT
hd
DLREXLEVHIG
HTHRED,
DLREXLEVLOW
THRED
Downlink power control algorithm uses a
single-threshold parameter, but Huawei power
control algorithm III uses dual-threshold
parameters.
AlphaQpskRxLvlP
roFac
DLRXLEVPROT
ECTFACTOR
The parameters have the same meaning.
AlphaQpskRxQual
ProFac
DLRXQUALPRO
TECTFACTOR
The parameters have the same meaning.
AlphaQpskRxLvlA
djFac
DLREXLEVADJF
CTR
The parameters have the same meaning.
AlphaQpskRxQual
AdjFac
DLREXQUALAD
JFCTR
The parameters have the same meaning.
AlphaQpskAmrFR
RxQualThd
Huawei power control algorithm III uses dualthreshold parameters, which specify the CIR.
Huawei power control algorithm III uses dualthreshold parameters, which specify the CIR.
3.6.3 Active Power Control
The VAMOS active power control function enables the BSC to perform power control on two
VAMOS MSs in the initial multiplexing stage. The two VAMOS MSs impose interference on
each other, and therefore VAMOS active power control takes into account the power control
steps for both the new and ongoing calls. The procedure for VAMOS active power control is
as follows:
l
The BSC calculates the power control steps of the new and ongoing calls.
l
The BSC performs joint power control on the new and ongoing calls based on the
calculated power control steps.
l
The BSC sends the power control steps to the MSs and BTS.
Figure 3-7 shows the procedure.
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Figure 3-7 VAMOS active power control procedure
VAMOS active power control can be performed on VAMOS MSs only if either of the
following conditions is met:
l
The PWRBCDALLOWD(BSC6900,BSC6910) parameter is set to YES(Yes).
l
The Dynamic Power Sharing feature has taken effect.
If neither of the preceding conditions is met, two VAMOS MSs work at their maximum
transmit power in the initial multiplexing stage. This section describes VAMOS active power
control on VAMOS MSs when the PWRBCDALLOWD(BSC6900,BSC6910)parameter is set
to YES(Yes) and Dynamic Power Sharing does not take effect. For details about VAMOS
active power control on VAMOS MSs when Dynamic Power Sharing takes effect, see GSM
Dynamic Power Sharing Feature Parameter Description.
Calculating the Power Control Step for the New Call
VAMOS active power control for the new call is performed in the same manner as the active
power control function for common calls except for the parameters used. Table 3-21 lists the
parameter mapping between the two functions.
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Table 3-21 Parameter mapping between VAMOS active power control for the new call and
active power control for common calls
New Call
Common Call
VAMOSInitPCULSigThr(BSC690
0,BSC6910)
EXPULRXLEV(BSC6900,BSC6910)
VAMOSInitPCDLSigThr(BSC690
0,BSC6910)
EXPDLRXLEV(BSC6900,BSC6910)
For details about active power control for common MSs, see Power Control Feature
Parameter Description.
Calculating the Power Control Step for the Ongoing Call
The VAMOS MS that has accessed the network has initiated a call. Therefore, the BSC uses
the configured power control algorithm, instead of the active power control algorithm, to
calculate the power control step for the ongoing call. VAMOS power control for the ongoing
call is performed in the same manner as the power control function for common calls, except
for the parameters used. Table 3-22 lists the parameter mapping between the two functions.
Table 3-22 Parameter mapping between VAMOS power control for the ongoing call and
power control for common calls
Ongoing Call
Common Call
VAMOSInitPCULSigThr(BSC690
0,BSC6910)
ULREXLEVHIGHTHRED(BSC6900,BSC6910),
ULREXLEVLOWTHRED(BSC6900,BSC6910)
VAMOSInitPCDLSigThr(BSC690
0,BSC6910)
DLREXLEVHIGHTHRED(BSC6900,BSC6910),
DLREXLEVLOWTHRED(BSC6900,BSC6910)
For details about active power control for common MSs, see Power Control Feature
Parameter Description.
Performing Joint Power Control
Joint power control enables the BSC to adjust the calculated power control steps for two
VAMOS MSs to suppress the mutual interference between the two MSs.
l
Adjusting uplink power control step
The BSC performs uplink power control on MSs. Therefore, the BSC sends two
multiplexed VAMOS MSs their respective uplink power control steps during uplink
VAMOS active power control. The BSC adjusts the uplink power control steps before
using them. Specifically, if the BSC estimates that the difference between the uplink
receive levels for the two VAMOS calls will exceed the value of
SicDiffHighThd(BSC6900,BSC6910) after active power control is enabled, the BSC
adjusts the larger of the two uplink power control steps so that the preceding estimation
will not be true.
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l
3 Technical Description
Adjusting downlink power control step
The BSC performs downlink power control on the BTS. Since two multiplexed calls
occupy one physical channel, the BSC sends one downlink power control step only to
the physical channel during downlink VAMOS active power control. However, the BSC
calculates downlink power control steps for both the new call and the ongoing call. To
adjust the downlink power control step, the BSC uses the smaller of the two calculated
downlink power control steps as the final downlink power control step.
Sending Power Control Steps
The BSC sends the calculated power control steps to the BTS and VAMOS MSs in the
Channel Activation message for the new MS. In this way, the BSC performs VAMOS active
power control on the two multiplexed MSs.
l
Sending uplink power control steps
For the new call, the BSC sends the BTS the uplink power control step in the ms-power
and phase-ii-ms-power IEs in the Channel Activation message for the new call. The
phase-ii-ms-power IE is valid only when PwrBCDOptimizeSwitch(BSC6900,BSC6910)
is set to ON(On).
For the ongoing call, the BSC sends the BTS the uplink power control step in the vamospair-ms-power and phase-ii-vamos-pair-ms-power IEs in the Channel Activation
message for the new call. The phase-ii-vamos-pair-ms-power IE is valid only when
PwrBCDOptimizeSwitch(BSC6900,BSC6910) is set to ON(On). The BTS then sends
the power control step over the slow associated control channel (SACCH) for the
ongoing call to the MS.
l
Sending the downlink power control step
The BSC sends the BTS the downlink power control step in the bs-power and phase-ii-bspower IEs in the Channel Activation message for the new call. The phase-ii-bs-power IE is
valid only when PwrBCDOptimizeSwitch(BSC6900,BSC6910) is set to ON(On).
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4
Related Features
4.1 GBFD-115830 VAMOS
4.1.1 Prerequisite Features
GBFD-115502 AMR HR or GBFD-113401 Half Rate Speech
The VAMOS feature allows two voice calls to be multiplexed only onto one TCHH.
Therefore, enable the AMR HR or Half Rate Speech feature before you enable VAMOS.
GBFD-118103 Network Support SAIC
The VAMOS feature requires support from SAIC MSs and therefore requires the Network
Support SAIC feature. The SAICALLOWED parameter controls whether to enable Network
Support SAIC. To measure the penetration rate of SAIC MSs, set the
MSCAPABLESTATSWITCH parameter to ON(On) and subscribe to the A03628: Number of
Calls Originated or Terminated by MSs Supporting SAIC and A03640: Number of Calls
counters on the U2000.
GBFD-117301 Flex Abis
The VAMOS feature requires the Flex Abis feature in Abis over TDM mode. After VAMOS
channel multiplexing is triggered, the BSC allocates an 8 kbit/s timeslot to each of the two
multiplexed subchannels. If timeslots are fixed in TDM mode, the number of timeslots used
doubles, wasting timeslot resources. Therefore, enable Flex Abis to improve resource
allocation and management. For details about the Flex Abis feature, see Flex Abis Feature
Parameter Description.
GBFD-118601 Abis over IP or GBFD-118611 Abis IP over E1/T1
The VAMOS feature requires the Abis IP over E1/T1 or Abis over IP feature in Abis over IP
mode.
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GBFD-117601 HUAWEI III Power Control Algorithm
The VAMOS feature requires the HUAWEI III power control algorithm and the enhanced
HUAWEI III power control algorithm. Therefore, enable both algorithms in the HUAWEI III
Power Control Algorithm feature before enabling VAMOS.
Before you enable VAMOS:
l
If the two algorithms have been enabled on the network and the high quality indicator
(HQI) is good, power control optimization is not required.
l
If the two algorithms are not enabled on the network, purchase the license for the
HUAWEI III Power Control Algorithm feature, enable the two algorithms, and monitor
network performance for a certain period. After ensuring that network performance has
not deteriorated, enable VAMOS. If network performance has deteriorated, optimize
power control parameters for the two algorithms to improve network performance and
then enable VAMOS.
For details about the HUAWEI III Power Control Algorithm feature, see Power Control
Feature Parameter Description.
4.1.2 Mutually Exclusive Features
GBFD-117501 Enhanced Measurement Report (EMR)
The VAMOS feature and the Enhanced Measurement Report (EMR) feature are mutually
exclusive.
GBFD-117001 Flex MAIO
The VAMOS feature and the Flex MAIO feature are mutually exclusive.
GBFD-510104 Multi-site Cell
The VAMOS feature and the Multi-site Cell feature are mutually exclusive.
GBFD-113521 A5/1 Encryption Flow Optimization
The A5/1 Encryption Flow Optimization feature includes the Flex TSC function, but the
VAMOS feature uses planned TSCs. Therefore, do not simultaneously enable the VAMOS
feature and the Flex TSC function of A5/1 Encryption Flow Optimization. For details, see
Ciphering Feature Parameter Description.
GBFD-510101 Automatic Frequency Correction (AFC)
Enabling the white SAIC MS identification function may cause the frequency correction
information calculated by using the Automatic Frequency Correction (AFC) to be inaccurate.
If both the VAMOS feature and the Automatic Frequency Correction (AFC) feature are
enabled, the VAMOS feature does not take effect. Consequently, channel multiplexing cannot
be performed.
GBFD-114001 Extended Cell
The VAMOS feature and the Extended Cell feature are mutually exclusive.
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4 Related Features
High-Priority User
The VAMOS feature and the high-priority user function can be simultaneously enabled, but
VAMOS channel multiplexing cannot be performed on calls initiated by high-priority users.
Voice quality deteriorates after VAMOS is enabled. Therefore, do not enable VAMOS for
high-priority users. If the HIGHPRIUSERQUALFIRST(BSC6900,BSC6910) parameter is
set to YES(Yes), VAMOS channel multiplexing cannot be performed on calls whose priorities
are less than or equal to the value of the
HIGHESTPRIORITQUALFIRST(BSC6900,BSC6910) parameter. If the
HIGHPRIUSERQUALFIRST(BSC6900,BSC6910) parameter is set to NO(No), VAMOS
channel multiplexing can be performed on all calls.
Asynchronous Handover
Asynchronous handovers are not supported during VAMOS channel multiplexing. Therefore,
only VAMOS channel multiplexing using an intra-cell handover is supported. If the coverage
areas of two BTSs both overlap with a cell, VAMOS channel multiplexing cannot be
performed on two calls respectively served by the two BTSs.
Cells Under BTSs with Repeaters
Asynchronous handovers are recommended for cells under BTSs configured with repeaters,
but VAMOS channel multiplexing does not support asynchronous handovers. Therefore, do
not use the VAMOS feature for such cells.
4.1.3 Impacted Features
GBFD-113501 A5/1 and A5/2 Ciphering Algorithm, GBFD-113503 A5/3 Ciphering
Algorithm
The ciphering algorithms randomize signals of two multiplexed VAMOS calls, improving
demodulation performance. Therefore, enable the ciphering algorithms together with the
VAMOS feature.
GBFD-114803 Discontinuous Transmission (DTX)-Uplink
The Discontinuous Transmission (DTX)-Uplink feature reduces interference between
multiplexed VAMOS calls and interference across the entire network. Therefore, enable
VAMOS together with this feature.
GBFD-114801 Discontinuous Transmission (DTX)-Downlink
Enabling the Discontinuous Transmission (DTX)-Downlink feature causes the MS
identification result to be inaccurate. When both the Discontinuous Transmission (DTX)Downlink feature and the white SAIC MS identification function are enabled, you are advised
to set SpeMsIdeMutexOpt(BSC6900,BSC6910) to ON(On).
l
If this parameter is set to ON(On), the downlink DTX can fill the data during white
SAIC MS identification and can still take effect without white SAIC MS identification.
Therefore, the Discontinuous Transmission (DTX)-Downlink feature and the white
SAIC MS identification function can be used simultaneously.
l
If this parameter is set to OFF(Off), the BSS disables downlink DTX for all calls.
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Do not implement the white SAIC MS identification function for HR or AMR HR calls. You
are advised to set HRMsIdeAllowed(BSC6900,BSC6910) to OFF(Off). This is because the
downlink DTX for HR calls and the white SAIC MS identification function are not fully
compatible. If white SAIC MS identification is performed on HR calls, speech quality of HR
calls deteriorates, thereby jeopardizing user experience.
The Discontinuous Transmission (DTX)-Downlink feature reduces interference between
multiplexed VAMOS calls and interference across the entire network. Therefore, enable
VAMOS together with this feature.
GBFD-117002 IBCA or GBFD-119511 IBCA II
When the VAMOS and IBCA/IBCA II features are simultaneously enabled, the
VAMOSAHSUserDLSoftBlockThd(BSC6900,BSC6910) parameter specifies the soft block
threshold for VAMOS calls using the AMR HR speech version. For details, see IBCA
Feature Parameter Description or IBCA II Feature Parameter Description.
GBFD-114151 DTM, GBFD-119403 Class11 DTM, GBFD-119404 HMC DTM
When the VAMOS feature is simultaneously enabled with the DTM, Class11 DTM, or HMC
DTM feature, if the FH group TSC is inconsistent with the VAMOS primary TSC, a DTMcapable MS uses different TSCs to process CS and PS services. As a result, the DTM service
setup fails. To prevent any exception in DTM services, set the cell BCC, FH group TSC, and
VAMOS primary TSC (specified by VamosMainTsc(BSC6900,BSC6910)) to the same value.
Alternatively, set TSCUnifySw(BSC6900,BSC6910) to ON(On). Modifying an FH group
TSC will cause a cell to reset.
To prevent VAMOS channel multiplexing on a DTM call (that is, the CS part of a DTM
service), the BSC imposes the following constraints: VAMOS channel multiplexing can only
be performed on a common CS call and on a DTM call. VAMOS channel multiplexing can be
performed in only one direction, that is, the BSC assigns or hands over the common CS call to
the channel occupied by the DTM call.
If the call using the primary TSC is released during VAMOS channel multiplexing and the
MS using the secondary TSC initiates a DTM service, since the packet data channel (PDCH)
corresponds to the primary TSC, the MS using the secondary TSC needs to perform an intracell handover so that it can use the primary TSC before processing DTM services. This is
because an MS using a new TSC cannot process DTM services, as stipulated in 3GPP TS
24.008 V9.7.0.
GBFD-118106 Dynamic Power Sharing
The Dynamic Power Sharing feature provides the active power control function. Therefore,
when Dynamic Power Sharing takes effect, the BSC can perform active power control on
VAMOS calls even if the PWRBCDALLOWD parameter is set to NO(No). However, active
power control enabled by using Dynamic Power Sharing is implemented differently from that
enabled by setting PWRBCDALLOWD to YES(Yes). The details are as follows:
l
Calculating the power control step for the new call
The BSC uses the parameters for common calls listed in Table 3-21 to calculate the
power control step.
l
Calculating the power control step for the ongoing call
The BSC uses the parameters for common calls listed in Table 3-22 to calculate the
power control step.
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l
4 Related Features
Performing joint power control
The BSC does not adjust uplink power control steps.
The BSC adjusts the downlink power control step in the same manner as that described
in 3.6.3 Active Power Control.
l
Sending power control steps to the MSs and BTS
The BSC sends power control steps to the MSs and BTS in the same manner as that
described in 3.6.3 Active Power Control.
GBFD-160202 MICC
When the VAMOS feature is enabled, it is recommended that MICC also be enabled to
improve the anti-interference performance of VAMOS.
GBFD-119405 14.4kbit/s Circuit Switched Data, GBFD-119406 High Speed Circuit
Switched Data
VAMOS channel multiplexing cannot be performed on the calls enabled with the 14.4kbit/s
Circuit Switched Data or High Speed Circuit Switched Data feature.
GBFD-115903 Four-Way Receiver Diversity
Enable both VAMOS and Four-Way Receiver Diversity to improve the performance of
VAMOS. Compared with VAMOS services enabled with Main Diversity, the values of
counters under Number of MRs Based on TA will fluctuate by a symbol or remain stable for
VAMOS services enabled with Four-Way Receiver Diversity.
MRFD-210604 2-Antenna Receive Diversity
Compared with a scenario where VAMOS is disabled, the values of counters under Number of
MRs Based on TA will fluctuate by a symbol or remain stable because of differences in the
receiver implementation mechanisms when both the VAMOS and 2-Antenna Receive
Diversity features are enabled.
GBFD-115701 TFO
If the TFO feature is enabled, the BSS no longer controls whether a call can use DTX.
Therefore, downlink DTX may be performed for an MS that is performing TFO services even
if the Discontinuous Transmission (DTX)-Downlink feature is disabled. The white SAIC MS
identification function impacts the TFO feature in the same way as it impacts the
Discontinuous Transmission (DTX)-Downlink feature. You are advised to set
SpeMsIdeMutexOpt(BSC6900,BSC6910) to ON(On) and set
HRMsIdeAllowed(BSC6900,BSC6910) to OFF(Off).
GBFD-115702 TrFO
When the TrFO feature takes effect, whether a call uses DTX is not controlled by the BSS. As
a result, a call processing TrFO services may process DTX in the downlink, even if the
Discontinuous Transmission (DTX)-Downlink feature is disabled. Therefore, the white SAIC
MS identification function impacts the TrFO feature in the same way as it impacts the
Discontinuous Transmission (DTX)-Downlink feature. You are advised to set
HRMsIdeAllowed(BSC6900,BSC6910) to OFF(Off).
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In addition, unlike the Discontinuous Transmission (DTX)-Downlink and TFO features, TrFO
services are not affected when SpeMsIdeMutexOpt(BSC6900,BSC6910) is set to ON(On).
This is because the BSS cannot control whether a call processes TrFO services, and the BSS
automatically performs data padding if downlink DTX is enabled with TrFO.
GBFD-118602 A over IP or GBFD-118622 A IP over E1/T1
In A over IP mode, the TrFO feature is automatically enabled. Therefore, when the white
SAIC MS identification function is enabled, you are advised to set
HRMsIdeAllowed(BSC6900,BSC6910) to OFF(Off) in A over IP mode.
BTS Multiplexing Rate
In Abis over TDM mode, set the BTS multiplexing rate to a ratio less than or equal to 2:1
before enabling VAMOS. This is because the number of MSs served by a TRX and the traffic
volume over radio signaling links (RSLs) will increase after the VAMOS feature is enabled.
Therefore, decrease the TRX multiplexing rate to a low value before you enable VAMOS.
Waiting for MRs over SDCCH
VAMOS channel multiplexing using the assignment procedure depends on the MRs
transmitted over the SDCCH, but not every MS sends an MR over the SDCCH during
immediate assignment. Therefore, if you enable VAMOS channel multiplexing using the
assignment procedure, set the SDCCHWaitMREn parameter to ON(On) and the
SDCCHWaitMRTimeLen parameter to a large value (It is recommended that this parameter
be set to 15 or larger).
ECSC
VAMOS channel multiplexing requires support from MSs. Therefore, the BSS must obtain
MSs' VAMOS capabilities contained in the Mobile Station Classmark 3 IE in advance. The
methods for obtaining the Mobile Station Classmark 3 IE are as follows:
l
The BSS obtains the Mobile Station Classmark 3 IE by using the classmark update
procedure triggered by the mobile switching center (MSC).
l
The BSS uses the ECSC function to instruct an MS to report the Mobile Station
Classmark 3 IE in advance. This method does not require support from the MSC and
takes effect when the ECSC parameter is set to YES(Yes).
The MSC, however, triggers the classmark update procedure only for some calls. Therefore,
set ECSC to YES(Yes) to enable the ECSCfunction.
EDGE/EDGE+
If the VAMOS and EDGE/EDGE+ features are enabled on the same TRX group, the uplink
rate of PS services may decrease. If the digital signal processing (DSP) capability of the TRX
group is insufficient after VAMOS channel multiplexing is triggered, the BSS uses the GMSK
modulation mode to decrease the uplink rate of EDGE/EDGE+ services on the TRX group.
eMLPP
The VAMOS feature and the enhanced multi-level precedence and preemption (eMLPP)
function can be simultaneously enabled, but the calls on which VAMOS channel multiplexing
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4 Related Features
is performed do not support eMLPP. Therefore, multiplexed calls cannot preempt the
resources occupied by other calls, and other calls cannot preempt the resources occupied by
multiplexed calls, either.
PDCH Reforming
The VAMOS feature and the PDCH reforming function can be simultaneously enabled, but
the calls on which VAMOS channel multiplexing is performed do not support PDCH
reforming. The PDCH reforming function is controlled by the PDCHREFORMING
parameter.
4.2 GBFD-160201 VAMOS FR
4.2.1 Prerequisite Features
The VAMOS FR feature requires the same features as the VAMOS feature, except that
VAMOS FR does not require the GBFD-115502 AMR HR or GBFD-113401 Half Rate
Speech feature.
4.2.2 Mutually Exclusive Features
The VAMOS FR and VAMOS features have the same mutually-exclusive features.
4.2.3 Impacted Features
The VAMOS FR feature impacts the same features (except IBCA) for the same causes as the
VAMOS feature.
GBFD-117002 IBCA
When the VAMOS FR and IBCA features are simultaneously enabled, the
VAMOSAFSUserDLSoftBlockThd(BSC6900,BSC6910) parameter specifies the soft block
threshold for VAMOS calls using the AMR FR speech version. For details, see IBCA Feature
Parameter Description.
4.3 GBFD-160217 VAMOS I&II Support
4.3.1 Prerequisite Features
GBFD-115830 VAMOS or GBFD-160201 VAMOS FR
The VAMOS I&II Support feature takes effect only if the VAMOS or VAMOS FR feature
takes effect.
4.3.2 Mutually Exclusive Features
None
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4.3.3 Impacted Features
None
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5 Network Impact
5
Network Impact
5.1 System Capacity
l
Capacity gains
The VAMOS feature expands network capacity and alleviates channel congestion. The
VAMOS FR feature significantly improves the MOS and provides the same theoretical
capacity as the AMR HR or Half Rate Speech feature. Few commercial MSs support
VAMOS. Therefore, the capacity gains delivered by the VAMOS function are largely
determined by the penetration rate of SAIC MSs. VAMOS brings considerable capacity
gains to a network that uses a loose frequency reuse pattern and has a large penetration
rate of SAIC MSs. Table 5-1 lists the mapping between SAIC MS penetration rates and
VAMOS capacity gains in different frequency reuse scenarios.
Table 5-1 Mapping between SAIC MS penetration rates and VAMOS capacity gains in
different frequency reuse scenarios
Frequency Reuse
Pattern
SAIC MS Penetration
Rate
VAMOS Capacity Gain
4x3
50%
15%-30%
75%
25%-44%
100%
30%-60%
50%
10%-24%
75%
15%-36%
100%
25%-50%
50%
5%-20%
75%
10%-30%
100%
15%-40%
3x3
1x3
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NOTE
The capacity gains listed in Table 5-1 are only simulation results. To assess the capacity gains
delivered by VAMOS on a live network, take into consideration the TRX specifications and other
factors.
l
Monitoring
Counters for monitoring capacity gains:
Theoretically, capacity-related counters will improve after the VAMOS function is
enabled. Table 5-2 describes these counters.
Table 5-2 Counters for monitoring capacity gains
Counter Name
Counter Description
Remarks
CELL.KPI.TCH.
TRAF.ERL.TRA
F
K3014: Traffic Volume
on TCH
None
CELL.KPI.SD.T
RAF.ERL
K3004: Traffic Volume
on SDCCH
If the Waiting for MRs over SDCCH
function is enabled during VAMOS
channel multiplexing, the access
duration may be prolonged and the
value of this counter may increase.
CELL.CHAN.B
USY.NUM.VAM
OS.TCHH.TRA
F.AVE
R3501: Mean Number of
Busy Channels (VAMOS
TCHH)
When the VAMOS feature is enabled,
the value of this counter increases.
CELL.CHAN.B
USY.NUM.VAM
OS.TCHF.TRAF
.AVG
R3550N2:Average
Number of Busy VAMOS
FR Channels
When the VAMOS FR feature is
enabled, the value of this counter
increases.
Formula for calculating capacity gains:
Different operators have different understandings towards VAMOS capacity gains. The
following formula is used as an example to calculate the capacity gain delivered by
VAMOS:
VAMOS capacity gain = VAMOS traffic/Total traffic x 100%
where
VAMOS traffic = 2 x CELL.CHAN.BUSY.NUM.VAMOS.TCHH.TRAF.AVE + 2 x
CELL.CHAN.BUSY.NUM.VAMOS.TCHF.TRAF.AVG
Total traffic = CELL.KPI.TCH.TRAF.ERL.TRAF
5.2 Network Performance
5.2.1 White SAIC MS Identification
The white SAIC MS identification function negatively affects the network key performance
indicators (KPIs) described in this section. This function, however, does not need to be
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5 Network Impact
enabled for a long time. You are advised to disable this function after collecting data by
enabling it for a month. Therefore, the impact of this function on network KPIs is
controllable.
Network Access Delay
White SAIC MS identification requires the Identity Request procedure to be enabled. If this
procedure is disabled on live networks, the network access delay increases by 200–300 ms.
HQI
During white SAIC MS identification, the BSS attempts to change the modulation mode.
Therefore, the downlink HQI (proportion of receive quality bands 0 to 5) decreases by
approximately 0.1–0.5%.
Call Drop Rate
During white SAIC MS identification, the BSS attempts to change the modulation mode.
Therefore, the call drop rate increases by approximately 0.01–0.2%.
Handover Success Rate
During white SAIC MS identification, the BSS attempts to change the modulation mode, and
the alpha lower threshold is used. Therefore, the handover success rate may deteriorate by
about 0.01% to 0.1% within 24 hours of the white SAIC MS identification and will recover
later.
5.2.2 VAMOS
Call Quality
MOS is an industry-wide KPI used to measure the call quality of voice channels. After the
VAMOS feature is enabled, the MOS of calls using VHR channels is lower than that of calls
using TCH/Hs. The MOS decreases by 0.01 to 0.3, depending on the VAMOS multiplexing
rate and network quality. After the VAMOS FR feature is enabled, the MOS of calls using
VFR channels is lower than that of calls using TCH/Fs but is 0.2 to 0.3 higher than that of
calls using TCH/Hs.
If white SAIC MS identification was performed and the identification result was imported
into the SAIC MS capability database before the VAMOS function is enabled, negative
impacts of VAMOS on the MOS are alleviated after the VAMOS function is enabled. This is
because the alpha-QPSK modulation is used on the downlink for white SAIC MSs after the
VAMOS function is enabled (white SAIC MS identification has been disabled).
l
After the VAMOS feature is enabled, the MOS decreases by approximately 0.01 to 0.2.
l
After the VAMOS FR feature is enabled, the MOS of calls using VFR channels is 0.2 to
0.4 higher than that of calls using TCH/Hs.
A standard third-party tool is used to measure the MOS.
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NOTE
During a fixed point test, enabling VAMOS FR increases the MOS by approximately 0.2 to 0.3
compared with HR. However, in a drive test (DT), it is uncertain whether an MS uses HR before a call
connection but uses VAMOS FR after a call connection. Therefore, the actual MOS increase in a DT is
not as large as obtained in a fixed point test. The theoretical average MOS increase in a DT is (0.2~0.3)
multiplied by the VAMOS FR gain.
HQI
After the VAMOS function is enabled, the HQI may be adversely affected by 0.1–0.5%
because the interference between two multiplexed calls increases.
If white SAIC MS identification was performed and the identification result was imported
into the SAIC MS capability database before the VAMOS function is enabled, the negative
impact of VAMOS on the HQI is alleviated (the HQI decreases by approximately 0.1–0.3%)
after the VAMOS function is enabled. This is because the alpha-QPSK modulation is used on
the downlink for white SAIC MSs after the VAMOS function is enabled (white SAIC MS
identification has been disabled). When ICAdpScnIdentOptSw(BSC6900,BSC6910) is set to
ON(On), the optimization of the scenario identification for interference cancellation modes is
used. In this case, the uplink HQI deterioration decreases by 0.01–0.1%.
HQI is a self-defined index, towards which different operators have different understandings.
The following formula is used as an example to calculate the downlink HQI of half-rate
services:
Downlink HQI of half-rate services = (TRX.HR.DOWN.RX.QLTY.0.NEW +
TRX.HR.DOWN.RX.QLTY.1.NEW + TRX.HR.DOWN.RX.QLTY.2.NEW +
TRX.HR.DOWN.RX.QLTY.3.NEW + TRX.HR.DOWN.RX.QLTY.4.NEW +
TRX.HR.DOWN.RX.QLTY.5.NEW)/(TRX.HR.DOWN.RX.QLTY.0.NEW +
TRX.HR.DOWN.RX.QLTY.1.NEW + TRX.HR.DOWN.RX.QLTY.2.NEW +
TRX.HR.DOWN.RX.QLTY.3.NEW + TRX.HR.DOWN.RX.QLTY.4.NEW +
TRX.HR.DOWN.RX.QLTY.5.NEW + TRX.HR.DOWN.RX.QLTY.6.NEW +
TRX.HR.DOWN.RX.QLTY.7.NEW)
Call Drop Rate
After the VAMOS function is enabled, the counters listed in the following table may
deteriorate by approximately 0.01–0.1% because the interference between two multiplexed
calls increases.
If white SAIC MS identification was performed and the identification result was imported
into the SAIC MS capability database before the VAMOS function is enabled, the TCH call
drop rate (including handover) remains stable after the VAMOS function is enabled. This is
because the alpha-QPSK modulation is used in the downlink for white SAIC MSs after the
VAMOS function is enabled (white SAIC MS identification has been disabled).
Issue 03 (2015-09-07)
Counter Name
Counter Description
Remarks
CELL.RATE.TCH.CALL.DROP.I
NCLUDE.HO
ZTR304: Call Drop Rate
on TCH per
cell(including Handover)
None
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Counter Name
Counter Description
Remarks
CELL.SD.CALL.DROP
ZTR104C: Call Drop
Rate on SDCCH
If the Waiting for MRs
over SDCCH function is
enabled during VAMOS
channel multiplexing
using the assignment
procedure, the access
duration and the value of
this counter may
increase.
CELL.TCH.RD.DROP
RM333: Radio Drop Rate
of TCH
None
If the values of these counters have increased after the VAMOS function is enabled, query the
VAMOS call drop rate and check whether the deterioration is caused by VAMOS. The
VAMOS call drop rate is calculated using the following formula:
VAMOS call drop rate = (CELL.VAMOS.CALL.DROP.TIMES.HO.UNDO +
CELL.VAMOS.CALL.DROP.TIMES.HO.OTHER + CELL.VAMOS.CALL.DROP.TIMES)/
((CELL.VAMOS.INTRACELL.HO.CMD + CELL.VAMOS.ASS.CMD) x 2)
Number of Intra-Cell Handovers
After the VAMOS function is enabled, the counter listed in the following table may increase
because VAMOS channel multiplexing can be performed by using an intra-cell handover. If
this occurs, the number of handovers per call increases by 0.2 to 0.7. Number of handovers
per call = K3010B: TCH Seizure Requests in TCH Handovers (Traffic Channel)/K3013A:
Successful TCH Seizures (Traffic Channel)
Counter Name
Counter Description
Remarks
CELL.INTRACELL.HO.REQ.TC
H
H3009: Internal IntraCell Handover Requests
(TCH)
None
Assignment Success Rate
After the VAMOS function is enabled, the counter listed in the following table may decrease
by approximately 0.01–0.2% because network quality may deteriorate.
Issue 03 (2015-09-07)
Counter Name
Counter Description
Remarks
CELL.ASS.SUCC.RATE
RCA313: Assignment
Success Rate
None
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Uplink Rate of PS Services
If both the VAMOS and EDGE functions are enabled on a TRX and the TRX is handling
more services than its calculating capacity, the BSS will automatically decrease the uplink PS
rate. On the live network, the proportion of PS upload services is small, and therefore the
impact is negligible.
Counter Name
Counter Description
Remarks
TX.UP.EGPRS.LLC.PDU.THRP
UT.RATE.AVG
AL9426: Uplink
Throughput of EGPRS
Users LLC PDU
The traffic model has a
major impact on this
counter. Therefore, this
counter may not change
as expected in this
scenario.
CPU/DSP/Memory Usage
VAMOS services require a large number of resources. When VAMOS is enabled, the CPU,
DSP, and memory usage of Abis interface transmission resources, A-interface transmission
resources, and service processing boards all increase. The CPU usage increases by 0–3%.
Therefore, evaluate whether a hardware or transmission expansion is required.
Counter Name
Counter Description
Remarks
VS.XPU.CPULOAD.MEAN
AR9780: Average CPU
Usage of the XPU
None
TA
In GBSS16.0 and later, the BSC uses the primary TSC of VAMOS as the TSC for the cell and
automatically changes the FH group TSC to the primary TSC when VAMOS is
simultaneously enabled with the any of the following features: DTM, Class11 DTM, and
HMC DTM. Therefore, the TA may change when both the following conditions are met: An
earlier version is upgraded to GBSS16.0 or later. The FH group TSC is inconsistent with the
primary TSC of VAMOS before the upgrade.
Counter Name
Counter Description
Remarks
CELL.MS.BTS.DIST.AVR
AS3280: Mean Distance Between MS
and BTS
None
CELL.MAX.MS.BTS.DIST
S3281: Maximum Distance Between
MS and BTS
None
5.3 Inter-NE Interfaces
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5.3.1 Abis Interface Message
The following messages over the Abis interface have been added to accommodate the white
SAIC MS identification function. For details, see 3.2.1 White SAIC MS Identification per
Call.
l
White SAIC MS Identify
l
White SAIC MS Identify ACK
l
White SAIC MS Identify Report
l
White SAIC MS Identify Response
5.3.2 Power Control Command Messages
VAMOS power control is always performed on the BTS. Therefore, the BSC can trace only
one MS Power Control and one BS Power Control messages over the Abis interface after
receiving the Establish Indication message from the BTS.
5.3.3 Channel Activation Message
When VAMOS active power control is enabled, the vamos-pair-ms-power and phase-iivamos-pair-ms-power IEs are added in the Channel Activation message sent by the new call.
The phase-ii-vamos-pair-ms-power IE is valid only when PwrBCDOptimizeSwitch is set to
ON(On).
5.3.4 Assignment Command/Handover Command/Channel Mode
Modify Messages
If VAMOS I&II Support is enabled and if VAMOS channel multiplexing using an intra-cell
handover or the assignment procedure is triggered, the BSC multiplexes call A (a new call)
onto the TCH occupied by call B (an ongoing call). If call A is initiated by a VAMOS II MS,
the BSC sends an Assignment Command (if channel multiplexing using the assignment
procedure is triggered) or Handover Command (if channel multiplexing using an intra-cell
handover is triggered) message carrying the Channel Mode IE, instructing the MS to enter the
VAMOS channel multiplexing mode. If call B was initiated by a VAMOS II MS, the BSC
sends a Channel Mode Modify message carrying the Channel Mode IE, instructing the MS to
enter the VAMOS channel multiplexing mode.
Assume that VAMOS I&II Support is enabled, a call in a pair of calls (call A and call B) in
VAMOS channel multiplexing mode is initiated by a VAMOS II MS, and the two calls enter
the non-VAMOS channel multiplexing mode (call A needs to be handed over). If call A is
initiated by a VAMOS II MS, the BSC sends a Handover Command message carrying the
Channel Mode IE, instructing the MS to enter the non-VAMOS channel multiplexing mode. If
call B was initiated by a VAMOS II MS, the BSC sends a Channel Mode Modify message
carrying the Channel Mode IE, instructing the MS to enter the non-VAMOS channel
multiplexing mode.
5.4 Operation and Maintenance
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5.4.1 Channel Status Changed on the LMT
VAMOS Channels in the Idle State
Figure 5-1 shows the status of all idle TCHFs (static and dynamic) in a cell when
VamosSwitch is set to OFF(Off).
Figure 5-1 TCHF status when VamosSwitch is set to OFF(Off)
Figure 5-2 shows the status of all idle TCHHs (static and dynamic) in a cell when
VamosSwitch is set to OFF(Off).
Figure 5-2 TCHH status when VamosSwitch is set to OFF(Off)
Figure 5-3 shows the status of all idle TCHFs in a cell when VamosSwitch is set to ON(On)
or VFR(VFR). The two subchannels are numbered 0 and 2.
Figure 5-3 TCHF status when VamosSwitch is set to ON(On) or VFR(VFR)
Figure 5-4 shows the status of all idle TCHHs in a cell when VamosSwitch is set to ON(On)
or VHR(VHR). The four subchannels are numbered 0, 1, 2, and 3.
Figure 5-4 TCHH status when VamosSwitch is set to ON(On) or VHR(VHR)
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VAMOS Channels in the Active State
l
When VFR channels are in the active state, there is only one multiplexing mode, that is,
subchannels 0 and 2 are simultaneously occupied.
Figure 5-5 shows the status of all activated TCHFs in a cell when VamosSwitch is set to
ON(On) or VFR(VFR).
Figure 5-5 TCHF status when VamosSwitch is set to ON(On) or VFR(VFR)
As shown in Figure 5-5, VAMOS channel multiplexing is performed on the two calls
respectively occupying subchannels 0 and 2.
l
When VHR channels are in the active state, there are two multiplexing modes:
–
If subchannels 0 and 2 are simultaneously occupied, VAMOS channel multiplexing
is performed on the two calls respectively occupying the two subchannels.
–
If subchannels 1 and 3 are simultaneously occupied, VAMOS channel multiplexing
is performed on the two calls respectively occupying the two subchannels.
If other subchannels are occupied, the calls are common half-rate calls. Figure 5-6
shows the status of TCHHs (channels 6 and 7 of TRXs 1, 2, and 4) when
VamosSwitch is set to ON(On) or VHR(VHR).
Figure 5-6 TCHH status when VamosSwitch is set to ON(On) or VHR(VHR)
As shown in Figure 5-6, when VamosSwitch is set to VHR(VHR), VHR channel
multiplexing is performed on the two half-rate calls respectively occupying channels 6 and 7
of TRX 1, and the half-rate calls respectively occupying channels 6 and 7 of TRXs 2 and 4 are
all common half-rate calls.
5.4.2 Forced VAMOS Channel Multiplexing Added
VAMOS channel multiplexing can be forced on two VAMOS calls in a cell by running the
SET FHO command.
For example:
Step 1 Initiate two calls in the cell. Figure 5-7 shows the status of channels occupied by the two
half-rate calls when the VAMOS function is enabled.
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Figure 5-7 Channel status when the VAMOS function is enabled
Step 2 Run the SET FHO command to force VAMOS channel multiplexing on the call that occupies
the second subchannel.
SET FHO: OBJTYPE=CHN, TRXID=0, CHNO=7, HOMOD=VAMOSREUSE, SUBCHNO=1, DESTTRXID=0,
DESTCHNO=7, DESTSUBCHNO=2;
Step 3 Check the status of subchannels occupied by the two calls. The status indicates that the two
calls are multiplexed onto the same channel, as shown in Figure 5-8.
Figure 5-8 Channel status during VAMOS channel multiplexing
----End
5.4.3 Forced VAMOS Channel Demultiplexing Added
VAMOS channel demultiplexing can be forced on two VAMOS calls in a cell by running the
SET FHO command.
For example:
Step 1 Two calls have been multiplexed onto the same channel in the cell. Figure 5-9 shows the
channel status.
Figure 5-9 Channel status during VAMOS channel multiplexing
Step 2 Run the SET FHO command to force VAMOS channel demultiplexing on the call that
occupies the third subchannel.
SET FHO: OBJTYPE=CHN, TRXID=0, CHNO=7, HOMOD=VAMOSDEMULTIPLEX, SUBCHNO=2;
Step 3 Check the status of subchannels occupied by the two calls. The status indicates that the two
calls occupy one common TCHH, as shown in Figure 5-10.
Figure 5-10 Channel status when the VAMOS function is enabled
----End
5.4.4 Querying VAMOS Capabilities in a Cell Added
VAMOS capabilities are cell-level information. To query a cell's VAMOS capabilities, run the
DSP GCELLSTAT command. A cell supports VAMOS only if both the BSC and BTS
support the VAMOS function.
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BSC Supporting the VAMOS Function
The VAMOS function is enabled for the cell. If VamosSwitch is set to ON(On), the cell
supports both the VAMOS and VAMOS FR features. If VamosSwitch is set to VFR(VFR),
the cell supports only the VAMOS FR feature. If VamosSwitch is set to VHR(VHR), the cell
supports only the VAMOS feature.
BTS Supporting the VAMOS Function
l
The BTS that serves the cell supports the VAMOS function. Only 3900 series base
stations (excluding BTS3900B and BTS3900E) support VAMOS.
l
The VAMOS capabilities of RF modules and boards are described as follows:
–
To enable a cell to support the VAMOS FR feature, Universal BaseBand Processing
unit (UBBP) boards or radio frequency (RF) modules that support VAMOS FR
must be configured for the cell. For information about the VAMOS capabilities of
different UBBP boards, see Table 5-3. The RF modules supporting the VAMOS FR
feature include RRU3959, RRU3959w, RRU3952, RRU3953, RRU3953w,
AAU3920, RRU3962, RRU3962d, RRU3965, RRU3965d, MRFUd V6, MRFUdw
V6, RRU3952m, and AAU3911. However, not every TRX on these RF modules
supports the VAMOS function. Table 5-4 describes the VAMOS capabilities of
different RF modules.
Table 5-3 VAMOS capabilities of UBBP boards
–
Issue 03 (2015-09-07)
UBBPd1, UBBPd2,
UBBPd3, UBBPd4
UBBPd5
Numbe
r of
Config
ured
TRXs
Number
of TRXs
Supportin
g VAMOS
Number of
Configured
TRXs
Number of
TRXs
Supporting
VAMOS
Number of
Configured
TRXs
Number of
TRXs
Supporting
VAMOS
N ≤ 22
N
N ≤ 33
N
N ≤ 44
N
23
21
34
32
45
43
24
20
35
31
46
42
N/A
N/A
36
30
47
41
N/A
N/A
N/A
N/A
48
40
UBBPd6
To enable a cell to support the VAMOS feature, UBBP boards or RF modules that
support VAMOS must be configured for the cell. For information about the
VAMOS capabilities of different UBBP boards, see Table 5-3. The RF modules
supporting the VAMOS feature include: RRU3008 V1, RRU3008 V2, RRU3908
V1, RRU3908 V2, GRFU V1, GRFU V2, GRFU V2a, MRFU V1, MRFU V2,
MRFU V2a, RRU3928, RRU3929, RRU3926, RRU3942, RRU3936, RRU3938,
RRU3939, RRU3961, MRFUd, MRFUe, AAU3902, RRU3959, RRU3959w,
RRU3952, RRU3953, RRU3953w, AAU3920, RRU3962, RRU3962d, RRU3965,
RRU3965d, MRFUd V6, MRFUdw V6, RRU3952m, AAU3911. However, not
every TRX on these RF modules supports the VAMOS function. Table 5-4
describes the VAMOS capabilities of different RF modules.
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Table 5-4 VAMOS capabilities of RF modules
Issue 03 (2015-09-07)
Total
Number
of TRXs
Configur
ed on RF
Modules
Number of TRXs
Supporting VAMOS
on RRU3008 V1,
RRU3008 V2, RRU3908
V1, RRU3908 V2,
GRFU V1, GRFU V2,
GRFU V2a, MRFU V1,
MRFU V2, and MRFU
V2a
Number of TRXs
Supporting VAMOS
on AAU3902,
RRU3928, RRU3929,
RRU3926, RRU3942,
RRU3936, RRU3938,
RRU3939, RRU3961,
MRFUd, MRFUe
Number
of TRXs
Supportin
g
VAMOS
on
RRU3959,
RRU3959
w,
RRU3952,
RRU3953,
RRU3953
w,
AAU3920,
RRU3962,
RRU3962
d,
RRU3965,
RRU3965
d,
MRFUd
V6,
MRFUdw
V6,
RRU3952
m,
AAU3911
S1
1
1
1
S2
1
2
2
S3
1
3
3
S4
1
4
4
S5
0
4
5
S6
0
4
6
S7
0
3
6
S8
0
2
5
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NOTE
l The following limitations are imposed on the TRXs that support VAMOS on an RF module: It
is assumed that an RF module is configured with four TRXs (TRXs 0 through 3) and that all
the four TRXs support VAMOS. VAMOS channel multiplexing can be performed only on one
channel with the same channel number on the four TRXs at the same time. For example, if
VAMOS channel multiplexing is performed on channel 0 of TRX 2, it cannot be performed on
channel 0 of TRX 0, 1, or 3. Other channels have the same limitations by analogy.
l For VAMOS I and VAMOS II MSs, a UBBP board must be configured to support the new
TSC when an RRU3008 V1, RRU3008 V2, RRU3908 V1, RRU3908 V2, GRFU V1, GRFU
V2, GRFU V2a, MRFU V1, MRFU V2, or MRFU V2a is used. If a UBBP board is not
configured in the preceding scenario, the BSC allocates the old TSC to calls using the RF
module.
–
Issue 03 (2015-09-07)
To perform white SAIC MS identification in a cell, a UBBP board and an RF
module supporting the White SAIC MS Identification feature must be configured in
the cell. The RF module can be any of the following: RRU3008 V2, RRU3908 V2,
GRFU V2, GRFU V2a, MRFU V2, MRFU V2a, RRU3928, RRU3929, RRU3926,
RRU3942, RRU3936, RRU3938, RRU3939, RRU3961, MRFUd, MRFUe,
AAU3902, RRU3959, RRU3959w, RRU3952, RRU3953, RRU3953w, AAU3920,
RRU3962, RRU3962d, RRU3965, RRU3965d, MRFUd V6, MRFUdw V6,
RRU3952m, AAU3911.
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6 Engineering Guidelines
6
Engineering Guidelines
6.1 When to Use
6.1.1 VAMOS
VAMOS is recommended in the following scenarios:
l
VAMOS HR is applicable when the network has heavy traffic and is congested. It is
recommended that this feature be used if the proportion of HR traffic volume is greater
than 80%.
l
VAMOS FR is applicable when the traffic volume is not very high but the operator
wishes to partially replace VAMOS HR with VAMOS FR to improve the MOS. It is
recommended that this feature be used if the proportion of HR traffic volume is less than
55%. Enable VAMOS FR with VAMOS channel multiplexing using the assignment
procedure. If both VAMOS FR and VAMOS HR are enabled, both features apply as long
as there is HR traffic on the network. In this situation, it is recommended that VAMOS
channel multiplexing using the assignment procedure also be enabled.
l
If the GSM network is mature with stable or decreasing users, VAMOS is recommended
in heavy traffic scenarios (for example, during holidays). If the GSM network is growing
rapidly, adding TRXs is recommended to expand network capacity.
l
As a means of expanding network capacity, the HR function takes precedence over the
VAMOS feature. Use VAMOS to expand network capacity only if network congestion
cannot be relieved by increasing the proportion of half-rate services.
l
Using VAMOS FR takes precedence over increasing the proportion of half-rate services
to improve the MOS. When the network load is heavy, use VAMOS FR with the Half
Rate Speech, AMR HR, and VAMOS features to relieve network congestion. When the
network load is light, use VAMOS FR to increase the average MOS on the entire
network.
l
The SAIC MS penetration rate is greater than 30%, because few VAMOS MSs are now
available for commercial use and VAMOS channels are multiplexed mostly by SAIC
MSs. To measure the SAIC MS penetration rate, run the SET GCELLSOFT:
MSCAPABLESTATSWITCH=ON; command on the BSC LMT and subscribe to the
following counters (in the CALL.MSCAP.CELL function subset) on the U2000 to obtain
one-week data:
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Counter Name
Counter Description
CELL.SPT.SAIC.CALL.NUM
A03628: Number of Calls Originated or
Terminated by MSs Supporting SAIC
CELL.TOTAL.CALL.NUM
A03640: Number of Calls
SAIC Ratio (%) = (A03628: Number of calls originated or terminated by SAIC-capable
terminals)/(A03640: Number of total calls) x 100%
It is recommended that the white SAIC MS identification function be used one month before
the VAMOS function is enabled. The specific duration can be determined based on the
capability and penetration rate of SAIC MSs.
6.1.2 VAMOS I&II Support
It is recommended that the VAMOS I&II Support feature be enabled on a network when both
of the following conditions are met:
l
The network supports the VAMOS function.
l
The penetration rate of VAMOS I and VAMOS II MSs on the network is greater than
10%.
To measure the VAMOS MS penetration rate, run the SET GCELLSOFT:
MSCAPABLESTATSWITCH=ON; command on the BSC LMT and subscribe to the
following counters (in the CALL.MSCAP.CELL measurement unit) on the U2000 to
obtain one-week data:
Counter Name
Counter Description
CELL.SPT.VAMOS1.CALL.NUM
A03641: Number of VAMOS-1 Calls
CELL.SPT.VAMOS2.CALL.NUM
A03642: Number of VAMOS-2 Calls
CELL.TOTAL.CALL.NUM
A03640: Number of Calls
VAMOS Ratio (%) = (A03641: Number of VAMOS-1 Calls + A03642: Number of VAMOS-2
Calls)/(A03640: Number of Calls) x 100%
6.2 Planning
6.2.1 TSC
New TSC
New TSCs do not need to be planned. This is because new TSCs are used only when VAMOS
MSs are performing VAMOS channel multiplexing and new and old TSCs used during
VAMOS channel multiplexing are orthogonal to each other.
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Old TSC
Old TSCs need to be planned. Few VAMOS MSs supporting new TSCs are now available for
commercial use. VAMOS is used mostly by SAIC MSs. Two SAIC MSs multiplexed onto the
same VAMOS channel must use different orthogonal TSCs. If VAMOS is enabled for all cells
on a network, each cell requires two TSCs. The TSC reuse rate decreases for the entire
network, which shortens the distance between cells using the same TSCs. When the timeslots
of different cells are aligned, the cells may use the same frequencies and TSCs, thereby
deteriorating network performance. So the TSCs must be replanned before VAMOS is
enabled to maximize the distance between cells that use the same TSCs.
Plan the TSCs according to the following principles:
l
Do not use the same TSCs with neighboring cells that use the same frequencies.
l
The BTSs that use the same frequencies and TSCs must be distant from each other.
l
Ensure that orthogonal TSCs are used for two calls to be multiplexed onto the same
voice channel.
l
Keep cells that use the same TSCs far away from each other or configure these cells
reversely.
l
When no TRX in a cell participates in frequency hopping, the primary TSC must be the
same as the TSC for the cell (that is, the BCC value). When one or multiple TRXs in a
cell participate in frequency hopping, each frequency hopping group is configured with
one TSC. In this situation, all TSCs for the frequency hopping groups must be the same
as the primary TSC.
6.2.2 Capacity
l
For an existing network: Enable the VAMOS feature in areas where transmission is
congested and modify parameter settings to relieve network congestion. Enabling
VAMOS does not affect capacity planning for the live network.
l
For a newly deployed network: Like the Half Rate Speech feature, VAMOS facilitates
capacity planning by estimating the proportion of VAMOS traffic volume to total traffic
volume on the entire network and the traffic bearing capabilities of TRX boards.
6.2.3 Transmission Resources
E1/T1 cables, network cables, and optical cables are transmission resources over the Abis,
Ater, and A interfaces. Under the same configuration, more transmission resources are
required after the VAMOS function is enabled. For example, when E1 transmission is used,
E1 cables need to be added over the Abis, Ater, and A interfaces to meet the increased traffic
volume after VAMOS is enabled. Whether more transmission resources are required is
determined by the amount of configured transmission resources and the amount of required
transmission resources. Add transmission resources only if the configured transmission
resources cannot fully meet service requirements after VAMOS is enabled.
6.2.4 BSC Boards
As the traffic volume for CS services increases, additional boards of all types may be required
depending on an operator's BSC configurations. Therefore, network planning engineers need
to replan the BSC boards, including the following two types:
l
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After the VAMOS function is enabled, the number of speech paths increases to meet the
increased traffic volume. Consequently, the BSC's capability of processing speech
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frames or the processing capability of the TC processing board needs to be improved.
However, a TC processing board can process only a certain number of speech paths.
Therefore, additional TC processing boards need to be added. Whether more TC
processing boards are required is determined by the number of configured TC processing
boards and the number of required TC processing boards. Add TC processing boards
only if the number of speech paths supported by the configured TC processing boards
cannot fully meet service requirements after VAMOS is enabled.
l
As the traffic volume and corresponding transmission resources increase, additional
Abis, Ater, and A interface boards need to be added. Specifically, additional E1, T1, FE,
and GE ports, (that is, additional transmission interface boards) need to be added in a
BSC. Whether more interface boards are required is determined by the number of
configured interface boards and the number of required interface boards. Add interface
boards only if the number of speech paths supported by the configured interface boards
cannot fully meet service requirements after VAMOS is enabled.
6.3 Deploying the VAMOS Function
6.3.1 Deployment Requirements
Table 6-1 Deployment requirements
Aspect
Requirement
Prerequisite
features
For details about the prerequisite features of the VAMOS feature, see
4.1.1 Prerequisite Features.
For details about the prerequisite features of the VAMOS FR feature, see
4.2.1 Prerequisite Features.
Mutually
exclusive
features
For details about the mutually exclusive features of the VAMOS feature,
see 4.1.2 Mutually Exclusive Features.
BSC hardware
None
BTS hardware
3900 series base stations (excluding BTS3900B and BTS3900E) are
required because only this BTS type supports VAMOS.
For details about the mutually exclusive features of the VAMOS FR
feature, see 4.2.2 Mutually Exclusive Features.
The BTS is configured with RF modules or boards that support the
VAMOS function. For details about the RF modules or boards, see BTS
Supporting the VAMOS Function.
GSM
networking
In Abis over TDM mode, the Abis interface uses Flex Abis. In Abis over
IP mode, there are no restrictions on the Abis interface.
MS
The MSs are non-SAIC MSs, SAIC MSs, VAMOS I MSs, or VAMOS II
MSs.
NOTE
Few commercial MSs are VAMOS I or VAMOS II MSs.
MSC
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Aspect
Requirement
License
The license controlling this feature has been activated. For details about
the license control item, see License Control Item Description. For
details about how to activate the license, see License Management
Feature Parameter Description.
Others
None
6.3.2 Precautions
The BSS automatically resets the cell after you change the setting of the VAMOS Switch
parameter. Before resetting the cell, the BSS forces inter-cell handovers for ongoing calls in
the cell and considers a handover failure as a call drop.
6.3.3 Activation
Using MML Commands
1.
(Optional) Enable the white SAIC MS identification function as required by performing
the following operations:
a.
On the BSC LMT, run the SET GCELLVAMOS command with VAMOS Switch
and SAIC White MS Identification Switch set to ON(On). In this step, set SAIC
White MS Mean RX Quality Differ Thres, SAIC White MS Mean RX Quality
Abnormal Thres, and SAIC White MS Identification Periods based on actual
conditions.
NOTE
The value of SAIC White MS Mean RX Quality Abnormal Thres must be less than or
equal to that of SAIC White MS Identification Periods.
If the value of SAIC White MS Identification Periods is constant, a larger value of SAIC
White MS Mean RX Quality Abnormal Thres indicates that an MS is more likely to be
identified as a white SAIC MS. You are advised to set SAIC White MS Mean RX Quality
Abnormal Thres to 1 when SAIC White MS Identification Periods is set to its default
value of 3.
2.
b.
Run the EXP MSSAICCAPMML command every day to export the white SAIC
MS identification result in an MML script. In this step, set Export type to
NEWDATA(New generated data) and set File Name to the name of the MML
script. The MML script file is saved in the <Active OMU workspace
directory>/ftp/ms_saic_cap/ path. Then, run the MML scripts in batches to import
the white SAIC MS identification result into the SAIC MS capability database.
c.
Wait about one month.
d.
Run the SET GCELLVAMOS command to disable the white SAIC MS
identification function to minimize the negative impacts of this function on network
KPIs. In this step, set VAMOS Switch set to ON(On) and SAIC White MS
Identification Switch to OFF(Off).
Activate VAMOS channel multiplexing using the assignment procedure.
a.
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On the BSC LMT, run the SET GCELLPWR3 command with III Power Control
Optimized Enable set to YES(Yes).
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b.
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Run the SET GCELLVAMOS command with its parameters set as follows:
- Set both VAMOS Switch and Allow Channel Multiplex in Assignment to
ON(On).
- Set Primary TSC in VAMOS and Secondary TSC in VAMOS to appropriate
values.
When only VAMOS FR channel multiplexing is needed in a cell, set VAMOS
Switch to VFR(VFR).
NOTE
When only VAMOS HR channel multiplexing is needed in a cell, set VAMOS Switch to
VHR(VHR). When both VAMOS FR channel multiplexing and VAMOS HR channel
multiplexing are needed in a cell, set VAMOS Switch to ON(On).
c.
3.
Run the SET GCELLHOAD command with Waiting for MR on SDCCH Switch
set to ON(On) and Duration for Waiting MR on SDCCH set to an appropriate
value. It is recommended that Duration for Waiting MR on SDCCH be set to 15
or larger.
Activate VAMOS channel multiplexing using an intra-cell handover.
a.
On the BSC LMT, run the SET GCELLPWR3 command with III Power Control
Optimized Enable set to YES(Yes).
b.
Run the SET GCELLVAMOS command with its parameters set as follows:
- Set both VAMOS Switch and Allow Channel Multiplex via In-Cell HO to
ON(On).
- Set Primary TSC in VAMOS and Secondary TSC in VAMOS to appropriate
values.
4.
Activate VAMOS channel demultiplexing due to low cell load.
a.
On the BSC LMT, run the SET GCELLPWR3 command with III Power Control
Optimized Enable set to YES(Yes).
b.
Run the SET GCELLVAMOS command with its parameters set as follows:
- Set both VAMOS Switch and Channel Demultiplex on Low Cell Load to
ON(On).
- Set Primary TSC in VAMOS and Secondary TSC in VAMOS to appropriate
values.
5.
Activate VAMOS channel demultiplexing due to BQ.
a.
On the BSC LMT, run the SET GCELLPWR3 command with III Power Control
Optimized Enable set to YES(Yes).
b.
Run the SET GCELLVAMOS command with its parameters set as follows:
- Set both VAMOS Switch and Channel Demultiplex on Bad Qual. to ON(On).
- Set Primary TSC in VAMOS and Secondary TSC in VAMOS to appropriate
values.
6.
Activate optimization of VAMOS channel demultiplexing due to BQ.
a.
On the BSC LMT, run the SET GCELLPWR3 command with III Power Control
Optimized Enable set to YES(Yes).
b.
Run the SET GCELLVAMOS command with its parameters set as follows:
- Set VAMOS Switch, Channel Demultiplex on Bad Qual., and BQ VAMOS
Channel Demultiplex Optimize to ON(On).
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- Set Primary TSC in VAMOS and Secondary TSC in VAMOS to appropriate
values.
MML Command Examples
//(Optional) Enabling the white SAIC MS identification function
SET GCELLVAMOS: IDTYPE=BYID, CELLID=0, VamosSwitch=ON, SaicWhtMsIdentSw
=ON;
EXP MSSAICCAPMML: EXPTYPE=NEWDATA;
SET GCELLVAMOS: IDTYPE=BYID, CELLID=0, VamosSwitch=ON, SaicWhtMsIdentSw
=OFF;
//Activating VAMOS channel multiplexing using the assignment procedure
SET GCELLPWR3: IDTYPE=BYID, CELLID=0, PWRCTRLOPTIMIZEDEN=YES;
SET GCELLVAMOS: IDTYPE=BYID, CELLID=0, VamosSwitch=ON,
VamosAssSwitch=ON, VamosMainTsc=0, VamosSubTsc=2;
SET GCELLHOAD: IDTYPE=BYID, CELLID=0, SDCCHWaitMREn=ON;
//Activating VAMOS channel multiplexing using an intra-cell handover
SET GCELLPWR3: IDTYPE=BYID, CELLID=0, PWRCTRLOPTIMIZEDEN=YES;
SET GCELLVAMOS: IDTYPE=BYID, CELLID=0, VamosSwitch=ON,
VamosIntraHoSwitch=ON,VamosMainTsc=0, VamosSubTsc=2;
//Activating VAMOS channel demultiplexing due to low cell load
SET GCELLPWR3: IDTYPE=BYID, CELLID=0, PWRCTRLOPTIMIZEDEN=YES;
SET GCELLVAMOS: IDTYPE=BYID, CELLID=0, VamosSwitch=ON,
VamosLoadReuseSwitch=ON,VamosMainTsc=0, VamosSubTsc=2;
//Activating VAMOS channel demultiplexing due to BQ
SET GCELLPWR3: IDTYPE=BYID, CELLID=0, PWRCTRLOPTIMIZEDEN=YES;
SET GCELLVAMOS: IDTYPE=BYID, CELLID=0, VamosSwitch=ON,
VamosQualReuseSwitch=ON,VamosMainTsc=0, VamosSubTsc=2;
//Activating optimization of VAMOS channel demultiplexing due to BQ
SET GCELLPWR3: IDTYPE=BYID, CELLID=0, PWRCTRLOPTIMIZEDEN=YES;
SET GCELLVAMOS: IDTYPE=BYID, CELLID=0, VamosSwitch=ON,
VamosQualReuseSwitch=ON, VamosQualUndoPntSwitch=ON,
VamosBQDemuxPenSw=ON, VamosMainTsc=0, VamosSubTsc=2;
Using the CME (Method 1)
NOTE
When configuring the VAMOS feature on the CME, perform a single configuration first, and then
perform a batch modification if required. Configure the parameters of a single object before a batch
modification. Perform a batch modification before logging out of the parameter setting interface.
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(Optional) Enable the white SAIC MS identification function as required by performing
the following operations:
Only steps 1.a and 1.d in 1 support single configuration and batch configuration on the
CME.
1. Configure a single object (such as a cell) on the CME.
Set parameters on the CME according to the operation sequence in Table 6-2. For
instructions on how to perform the CME single configuration, see CME Single
Configuration Operation Guide.
2. (Optional) Modify objects in batches on the CME. (CME batch modification center)
icon on the CME to start the batch
To modify objects in batches, click the
modification wizard. For instructions on how to perform a batch modification through
the CME batch modification center, press F1 on the wizard interface to obtain online
help.
Table 6-2 Configuring parameters on the CME
SN
MO
NE
Parameter
Name
Parameter ID
Configura
ble in
CME
Batch
Modificati
on Center
1
GCELLVA
MOS
BSC6900
/
BSC6910
VAMOS Switch
VamosSwitch
Yes
SAIC White MS
Identification
Switch
SaicWhtMsIde
ntSw
SAIC White MS
Mean RX Quality
Differ Thres
SaicWhtAvgRx
QualBadThld
SAIC White MS
Mean RX Quality
Abnormal Thres
SaicWhtAvgAb
nTimesThld
SAIC White MS
Identification
Periods
SaicWhtIdentT
otalTime
VAMOS Switch
VamosSwitch
SAIC White MS
Identification
Switch
SaicWhtMsIde
ntSw
2
l
GCELLVA
MOS
BSC6900
/
BSC6910
Yes
Activating VAMOS channel multiplexing using the assignment procedure
1. Configure a single object (such as a cell) on the CME.
Set parameters on the CME according to the operation sequence in Table 6-3. For
instructions on how to perform the CME single configuration, see CME Single
Configuration Operation Guide.
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2. (Optional) Modify objects in batches on the CME. (CME batch modification center)
To modify objects in batches, click the
icon on the CME to start the batch
modification wizard. For instructions on how to perform a batch modification through
the CME batch modification center, press F1 on the wizard interface to obtain online
help.
Table 6-3 Configuring parameters on the CME
SN
MO
NE
Parameter
Name
Parameter ID
Configura
ble in
CME
Batch
Modificati
on Center
1
GCELLPW
R3
BSC6900
/
BSC6910
III Power
Control
Optimized
Enable
PWRCTRLOPT
IMIZEDEN
Yes
2
GCELLVA
MOS
BSC6900
/
BSC6910
VAMOS Switch
VamosSwitch
Yes
Allow Channel
Multiplex in
Assignment
VamosAssSwitc
h
Primary TSC in
VAMOS
VamosMainTsc
Secondary TSC
in VAMOS
VamosSubTsc
Waiting for MR
on SDCCH
Switch
SDCCHWaitMR
En
Duration for
Waiting MR on
SDCCH
SDCCHWaitMR
TimeLen
3
l
GCELLHO
AD
BSC6900
/
BSC6910
Yes
Activating VAMOS channel multiplexing using an intra-cell handover
1. Configure a single object (such as a cell) on the CME.
Set parameters on the CME according to the operation sequence in Table 6-4. For
instructions on how to perform the CME single configuration, see CME Single
Configuration Operation Guide.
2. (Optional) Modify objects in batches on the CME. (CME batch modification center)
icon on the CME to start the batch
To modify objects in batches, click the
modification wizard. For instructions on how to perform a batch modification through
the CME batch modification center, press F1 on the wizard interface to obtain online
help.
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Table 6-4 Configuring parameters on the CME
l
SN
MO
NE
Parameter
Name
Parameter ID
Configura
ble in
CME
Batch
Modificati
on Center
1
GCELLPW
R3
BSC6900
/
BSC6910
III Power
Control
Optimized
Enable
PWRCTRLOPT
IMIZEDEN
Yes
2
GCELLVA
MOS
BSC6900
/
BSC6910
VAMOS Switch
VamosSwitch
Yes
Allow Channel
Multiplex via InCell HO
VamosIntraHoS
witch
Primary TSC in
VAMOS
VamosMainTsc
Secondary TSC
in VAMOS
VamosSubTsc
Activating VAMOS channel demultiplexing due to low cell load
1. Configure a single object (such as a cell) on the CME.
Set parameters on the CME according to the operation sequence in Table 6-5. For
instructions on how to perform the CME single configuration, see CME Single
Configuration Operation Guide.
2. (Optional) Modify objects in batches on the CME. (CME batch modification center)
icon on the CME to start the batch
To modify objects in batches, click the
modification wizard. For instructions on how to perform a batch modification through
the CME batch modification center, press F1 on the wizard interface to obtain online
help.
Table 6-5 Configuring parameters on the CME
Issue 03 (2015-09-07)
SN
MO
NE
Parameter
Name
Parameter ID
Configura
ble in
CME
Batch
Modificati
on Center
1
GCELLPW
R3
BSC6900
/
BSC6910
III Power
Control
Optimized
Enable
PWRCTRLOPT
IMIZEDEN
Yes
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SN
MO
NE
Parameter
Name
Parameter ID
Configura
ble in
CME
Batch
Modificati
on Center
2
GCELLVA
MOS
BSC6900
/
BSC6910
VAMOS Switch
VamosSwitch
Yes
Channel
Demultiplex on
Low Cell Load
VamosLoadReu
seSwitch
Primary TSC in
VAMOS
VamosMainTsc
Secondary TSC
in VAMOS
VamosSubTsc
Activating VAMOS channel demultiplexing due to bad quality (BQ)
1. Configure a single object (such as a cell) on the CME.
Set parameters on the CME according to the operation sequence in Table 6-6. For
instructions on how to perform the CME single configuration, see CME Single
Configuration Operation Guide.
2. (Optional) Modify objects in batches on the CME. (CME batch modification center)
icon on the CME to start the batch
To modify objects in batches, click the
modification wizard. For instructions on how to perform a batch modification through
the CME batch modification center, press F1 on the wizard interface to obtain online
help.
Table 6-6 Configuring parameters on the CME
Issue 03 (2015-09-07)
SN
MO
NE
Parameter
Name
Parameter ID
Configura
ble in
CME
Batch
Modificati
on Center
1
GCELLP
WR3
BSC6900/
BSC6910
III Power
Control
Optimized
Enable
PWRCTRLOPT
IMIZEDEN
Yes
2
GCELLVA
MOS
BSC6900/
BSC6910
VAMOS Switch
VamosSwitch
Yes
Channel
Demultiplex on
Bad Qual.
VamosQualReu
seSwitch
Primary TSC in
VAMOS
VamosMainTsc
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NE
Parameter
Name
Parameter ID
Secondary TSC
in VAMOS
VamosSubTsc
Configura
ble in
CME
Batch
Modificati
on Center
Activating optimization of VAMOS channel demultiplexing due to BQ
1. Configure a single object (such as a cell) on the CME.
Set parameters on the CME according to the operation sequence in Table 6-7. For
instructions on how to perform the CME single configuration, see CME Single
Configuration Operation Guide.
2. (Optional) Modify objects in batches on the CME. (CME batch modification center)
icon on the CME to start the batch
To modify objects in batches, click the
modification wizard. For instructions on how to perform a batch modification through
the CME batch modification center, press F1 on the wizard interface to obtain online
help.
Table 6-7 Configuring parameters on the CME
Issue 03 (2015-09-07)
SN
MO
NE
Parameter
Name
Parameter ID
Configura
ble in
CME
Batch
Modificati
on Center
1
GCELLP
WR3
BSC6900/
BSC6910
III Power
Control
Optimized
Enable
PWRCTRLOPTI
MIZEDEN
Yes
2
GCELLVA
MOS
BSC6900/
BSC6910
VAMOS Switch
VamosSwitch
Yes
Channel
Demultiplex on
Bad Qual.
VamosQualReuse
Switch
BQ VAMOS
Channel
Demultiplex
Optimize
VamosQualUndo
PntSwitch
Enable BQ
VAMOS
Channel
Demultiplex
Penalty
VamosBQDemux
PenSw
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NE
Parameter
Name
Parameter ID
Primary TSC in
VAMOS
VamosMainTsc
Secondary TSC
in VAMOS
VamosSubTsc
Configura
ble in
CME
Batch
Modificati
on Center
Using the CME (Method 2)
The VAMOS and VAMOS FR features can be batch activated using the CME. For detailed
operations, see the following section in the CME product documentation or online help:
Managing the CME > CME Guidelines > Enhanced Feature Management > Feature
Operation and Maintenance.
NOTE
Only steps 1.a and 1.d for activating white SAIC MS identification support batch activation on the
CME.
The CME batch activation for the VAMOS feature includes that for the VAMOS FR and VAMOS I&II
Support features.
6.3.4 Activation Observation (the VAMOS Feature)
1.
(Optional) Verify the white SAIC MS identification function.
Assume that the following conditions are true:
–
TCHHs are configured for cell 0 and the TCHHs are available.
–
The Abis interface uses IP transmission.
–
The BTS supports VAMOS.
–
MS 1 and MS 2 are white SAIC MSs.
On the BSC LMT, perform the following steps:
a.
Run the SET GCELLVAMOS command with its parameters set as follows:
- Set VAMOS Switch to ON(On).
- Set SAIC White MS Identification Switch to OFF(Off).
- Set Allow Channel Multiplex via In-Cell HO to ON(On).
- Set Channel Multiplex Load Thres. to 0.
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b.
Run the SET GCELLCHMGAD command with TCH Traffic Busy Threshold
set to 0 and AMR TCH/H Prior Allowed set to OFF(Off).
c.
Run the SET OTHSOFTPARA command with TCH Rate Modify to YES(Yes).
d.
Start channel status monitoring in cell 0. Figure 6-1 shows the TCHH status in cell
0.
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Figure 6-1 TCH/H status 1
e.
View the IMEI on the back of each MS or input *#06# on each MS to display their
respective IMEIs. The first eight digits in the IMEIs indicate the TAC.
f.
Run the ADD GMSSAICCAP command with MS 1 and MS 2 specified as white
SAIC MSs, TAC set to a value consists of the first eight digits in the IMEI of MS 1,
Mute SAIC Flag set to NOTINVOLVED(Not involved), and Problem SAIC
Flag set to ALPHA_QPSK(Alpha-QPSK modulation).
g.
Use MS 1 and MS 2 to call each other in cell 0.
h.
Check the TCHH status in cell 0. MS 1 and MS 2 occupy their respective TCHHs.
Figure 6-2 shows the TCHH status in cell 0.
Figure 6-2 TCH/H status 2
i.
A few seconds later, check whether MS 1 and MS 2 are multiplexed on the same
TCHH. Figure 6-3 shows the TCHH status in cell 0 after VAMOS channel
multiplexing.
Figure 6-3 TCH/H status 3
j.
Trace single-user CS messages. Check whether the "vamos-powerctrl-policy-type"
field of the "vamos-pwrctrl-policy" IE in the Channel Activation message indicates
that the downlink modulation mode is alpha-qpsk(0).
Expected result: The alpha-QPSK modulation is used on the downlink for the two
white SAIC MSs after VAMOS channel multiplexing.
2.
Verify VAMOS channel multiplexing using the assignment procedure.
Assume that the following conditions are true:
–
TCH/Hs are configured for cell 0 and the TCH/Hs are available.
–
MS 1 and MS 2 support SAIC.
–
The Abis interface uses IP transmission.
–
The BTS supports VAMOS.
a.
On the BSC LMT, run the SET GCELLCHMGAD command with its parameters
set as follows:
- Set TCH Traffic Busy Threshold to 0.
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- Set AMR TCH/H Prior Allowed to OFF(Off).
- Set Load of UL-OL Cells Rate Select Allowed to NO(No).
b.
Run the SET GCELLHOAD command with Waiting for MR on SDCCH Switch
set to ON(On).
c.
Run the SET GCELLCHMGBASIC command with both Ratio of TCHH and
Ratio of AMR-HR set to 100.
d.
Run the SET OTHSOFTPARA command with TCH Rate Modify to YES(Yes).
e.
Run the SET GCELLVAMOS command with its parameters set as follows:
- Set both VAMOS Switch and Allow Channel Multiplex in Assignment to
ON(On).
- Set Channel Multiplex Load Thres., Channel Multiplex ATCB Thres. Offset
in Asgmt., Channel Multiplex Rx Qual. Thres. Offset in Asgmt., and Load
Thres. in Overlaid Subcell to 0.
- Set ATCB Thres. of Established SAIC Calls to 1.
- Set both UL Rx Qual. Thres. of Established Calls and DL Rx Qual. Thres. of
Established Calls to 70.
- Set Path Loss Offset Thres. of VAMOS Call to 63.
- Set ATCB Offset in Overlaid Subcell to 128.
f.
Start channel status monitoring in cell 0. Figure 6-4 shows the TCHH status in cell
0.
Figure 6-4 TCH/H status 1
g.
Use MS 1 to call a fixed-line phone in cell 0. After the call is connected, use MS 2
to call another fixed-line phone in cell 0.
h.
Check the TCH/H status in cell 0.
Expected result: The calls are processed properly and the call quality is good. MS 1
and MS 2 are multiplexed onto the same TCHH. Figure 6-5 shows the TCHH
status in cell 0.
Figure 6-5 TCH/H status 2
3.
Verify VAMOS channel multiplexing using an intra-cell handover.
Assume that the following conditions are true:
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TCH/Hs are configured for cell 0 and the TCH/Hs are available.
–
MS 1 and MS 2 support SAIC.
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–
The Abis interface uses IP transmission.
–
The BTS supports VAMOS.
a.
On the BSC LMT, perform the following steps: Run the SET GCELLCHMGAD
command with TCH Traffic Busy Threshold set to 0 and AMR TCH/H Prior
Allowed set to OFF(Off).
b.
Run the SET GCELLCHMGBASIC command with both Ratio of TCHH and
Ratio of AMR-HR set to 100.
c.
Run the SET OTHSOFTPARA command with TCH Rate Modify to YES(Yes).
d.
Run the SET GCELLVAMOS command with its parameters set as follows:
- Set VAMOS Switch and Allow Channel Multiplex via In-Cell HO to ON(On).
- Set Channel Multiplex Load Thres. to 0.
- Set ATCB Thres. of Established SAIC Calls to 1.
- Set both UL Rx Qual. Thres. of Established Calls and DL Rx Qual. Thres. of
Established Calls to 70.
- Set Path Loss Offset Thres. of VAMOS Call to 63.
e.
Start channel status monitoring in cell 0. Figure 6-6 shows the TCHH status in cell
0.
Figure 6-6 TCH/H status 1
f.
Use MS 1 to call a fixed-line phone in cell 0. After the call is connected, use MS 2
to call another fixed-line phone in cell 0.
g.
Check the TCH/H status in cell 0.
Expected result: The calls are processed properly and the call quality is good. MS 1
and MS 2 occupy their respective TCHHs during call establishment. Figure 6-7
shows the TCHH status in cell 0.
Figure 6-7 TCH/H status 2
h.
MS 1 and MS 2 are multiplexed onto the same TCHH several seconds later. Figure
6-8 shows the TCHH status in cell 0.
Figure 6-8 TCH/H status 3
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4.
6 Engineering Guidelines
Verify VAMOS channel demultiplexing due to low cell load.
Assume that the following conditions are true:
– TCH/Hs are configured for cell 0 and the TCH/Hs are available.
– MS 1 and MS 2 support SAIC.
– The Abis interface uses IP transmission.
– The BTS supports VAMOS.
a.
b.
c.
d.
e.
On the BSC LMT, perform the following steps: Run the SET GCELLCHMGAD
command with TCH Traffic Busy Threshold set to 0 and AMR TCH/H Prior
Allowed set to OFF(Off).
Run the SET GCELLCHMGBASIC command with both Ratio of TCHH and
Ratio of AMR-HR set to 100.
Run the SET OTHSOFTPARA command with TCH Rate Modify to YES(Yes).
Run the SET GCELLVAMOS command with its parameters set as follows:
- Set both VAMOS Switch and Channel Demultiplex on Low Cell Load to
ON(On).
- Set Channel Multiplex Load Thres. to 100.
- Set Load Thres. of Channel Demultiplex to 99.
Start channel status monitoring in cell 0. Figure 6-9 shows the TCHH status in cell
0.
Figure 6-9 TCH/H status 1
f.
g.
Use MS 1 to call a fixed-line phone in cell 0. After the call is connected, use MS 2
to call another fixed-line phone in cell 0.
Check the TCH/H status in cell 0.
Expected result: The calls are processed properly and the call quality is good. MS 1
and MS 2 occupy their respective TCHHs during call establishment. Figure 6-7
shows the TCHH status in cell 0.
Figure 6-10 TCH/H status 2
h.
Run the SET FHO command to trigger VAMOS channel multiplexing using an
intra-cell handover. Check the TCHH status in cell 0. Figure 6-11 shows the TCHH
status in cell 0.
Figure 6-11 TCH/H status 3
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i.
6 Engineering Guidelines
Recheck the TCHH status after several seconds. Figure 6-12 shows the TCHH
status in cell 0.
Figure 6-12 TCH/H status 4
Expected result: MS 1 and MS 2 are multiplexed onto the same TCH/H after the
handover for VAMOS channel multiplexing is performed. Several seconds later,
VAMOS channel demultiplexing is performed, and MS 1 and MS 2 occupy their
respective TCH/Hs.
5.
Verify VAMOS channel demultiplexing due to BQ.
Assume that the following conditions are true:
–
TCH/Hs are configured for cell 0 and the TCH/Hs are available.
–
MS 1 and MS 2 support SAIC.
–
The Abis interface uses IP transmission.
–
The BTS supports VAMOS.
a.
On the BSC LMT, perform the following steps: Run the SET GCELLCHMGAD
command with TCH Traffic Busy Threshold set to 0 and AMR TCH/H Prior
Allowed set to OFF(Off).
b.
Run the SET GCELLCHMGBASIC command with both Ratio of TCHH and
Ratio of AMR-HR set to 100.
c.
Run the SET OTHSOFTPARA command with TCH Rate Modify to YES(Yes).
d.
Run the SET GCELLVAMOS command with its parameters set as follows:
- Set both VAMOS Switch and Channel Demultiplex on Bad Qual. to ON(On).
- Set both UL RX Bad Qual. Demultiplex Thres. and DL RX Bad Qual.
Demultiplex Thres. to 0.
e.
Start channel status monitoring in cell 0. Figure 6-13 shows the TCHH status in
cell 0.
Figure 6-13 TCH/H status 1
f.
Use MS 1 to call a fixed-line phone in cell 0. After the call is connected, use MS 2
to call another fixed-line phone in cell 0.
g.
Check the TCH/H status in cell 0.
Expected result: The calls are processed properly and the call quality is good. MS 1
and MS 2 occupy their respective TCHHs during call establishment. Figure 6-14
shows the TCHH status in cell 0.
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Figure 6-14 TCH/H status 2
h.
Run the SET FHO command to trigger VAMOS channel multiplexing using an
intra-cell handover. Check the TCHH status in cell 0. Figure 6-15 shows the TCHH
status in cell 0.
Figure 6-15 TCH/H status 3
i.
Recheck the TCHH status after several seconds. Figure 6-16 shows the TCHH
status in cell 0.
Figure 6-16 TCH/H status 4
Expected result: MS 1 and MS 2 are multiplexed onto the same TCH/H after the
handover for VAMOS channel multiplexing is performed. Several seconds later,
VAMOS channel demultiplexing is performed, and MS 1 and MS 2 occupy their
respective TCH/Hs.
6.
Verify optimization of VAMOS channel demultiplexing due to BQ.
Assume that the following conditions are true:
–
TCH/Hs are configured for cell 0 and the TCH/Hs are available.
–
MS 1 and MS 2 support SAIC.
–
The Abis interface uses IP transmission.
–
The BTS supports VAMOS.
a.
On the BSC LMT, perform the following steps: Run the SET GCELLCHMGAD
command with TCH Traffic Busy Threshold set to 0 and AMR TCH/H Prior
Allowed set to OFF(Off).
b.
Run the SET GCELLCHMGBASIC command with both Ratio of TCHH and
Ratio of AMR-HR set to 100.
c.
Run the SET OTHSOFTPARA command with TCH Rate Modify to YES(Yes).
d.
Run the SET GCELLVAMOS command with its parameters set as follows:
- Set VAMOS Switch, Channel Demultiplex on Bad Qual., and BQ VAMOS
Channel Demultiplex Optimize to ON(On).
- Set both UL RX Bad Qual. Demultiplex Thres. and DL RX Bad Qual.
Demultiplex Thres. to 0.
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e.
6 Engineering Guidelines
The following steps are used as an example to verify that the BSC allows only BQ
handovers for VAMOS demultiplexing and prohibits other quality-based handovers
(including interference handovers, BQ handovers, and TCH/F-TCH/H handovers)
when the BQ handover algorithm is enabled:
Enable the BQ handover algorithm.
(1) Run the SET GCELLHOBASIC command with both Intracell HO Allowed
and BQ HO Allowed set to YES(Yes).
(2) Run the SET GCELLAMRQUL command with both UL Qual. Limit for
AMR FR and UL Qual. Limit for AMR HR set to 0.
(3) Run the SET GCELLAMRQUL command with both DL Qual. Limit for
AMR FR and DL Qual. Limit for AMR HR set to 0.
f.
Start channel status monitoring in cell 0. Figure 6-17 shows the TCHH status in
cell 0.
Figure 6-17 TCH/H status 1
g.
Use MS 1 to call a fixed-line phone in cell 0. After the call is connected, use MS 2
to call another fixed-line phone in cell 0.
h.
Check the TCH/H status in cell 0.
Expected result: The calls are processed properly and the call quality is good. MS 1
and MS 2 occupy their respective TCHHs during call establishment. Figure 6-18
shows the TCHH status in cell 0.
Figure 6-18 TCH/H status 2
i.
Run the SET FHO command to trigger VAMOS channel multiplexing using an
intra-cell handover. Check the TCHH status in cell 0. Figure 6-19 shows the TCHH
status in cell 0.
Figure 6-19 TCH/H status 3
j.
Check the TCH/H status in cell 0.
Expected result: Two MSs are being multiplexed onto the same TCH/H. No BQ
handover is performed.
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k.
6 Engineering Guidelines
Recheck the TCHH status after several seconds. Figure 6-20 shows the TCHH
status in cell 0.
Figure 6-20 TCH/H status 4
Expected result: Several seconds after optimization of VAMOS channel demultiplexing
due to BQ is enabled, VAMOS channel demultiplexing is performed, and the call with
good voice quality is handed over to another TCH/H. A BQ handover is triggered on the
call with poor voice quality only when the timer specified by the BQ VAMOS Channel
Demultiplex Penalty Period parameter expires.
6.3.5 Activation Observation (the VAMOS FR Feature)
1.
(Optional) Verify the white SAIC MS identification function.
See 1.
2.
Verify VAMOS FR channel multiplexing using the assignment procedure.
Assume that the following conditions are true:
–
TCH/Fs are configured for cell 0 and the TCH/Fs are available.
–
MS 1 and MS 2 support SAIC.
–
The Abis interface uses IP transmission.
–
The BTS supports VAMOS FR.
a.
On the BSC LMT, run the SET GCELLCHMGAD command with its parameters
set as follows:
- Set TCH Traffic Busy Threshold to 100.
- Set AMR TCH/H Prior Allowed to OFF(Off).
- Set Load of UL-OL Cells Rate Select Allowed to NO(No).
b.
Run the SET GCELLHOAD command with Waiting for MR on SDCCH Switch
set to ON(On).
c.
Run the SET GCELLCHMGBASIC command with both Ratio of TCHH and
Ratio of AMR-HR set to 0.
d.
Run the SET OTHSOFTPARA command with TCH Rate Modify to YES(Yes).
e.
Run the SET GCELLVAMOS command with its parameters set as follows:
- Set VAMOS Switch to VFR(VFR).
- Set Allow Channel Multiplex in Assignment to ON(On).
- Set Load Threshold for VAMOS FR Multiplexing, Channel Multiplex ATCB
Thres. Offset in Asgmt., Channel Multiplex Rx Qual. Thres. Offset in Asgmt.,
OL Load Threshold for VAMOS FR Multiplexing, and RX Quality Thld Offset
for VAMOS FR Multiplex to 0.
- Set ATCB Thres. of Established SAIC Calls to 1.
- Set both UL Rx Qual. Thres. of Established Calls and DL Rx Qual. Thres. of
Established Calls to 70.
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- Set Path Loss Offset Thres. of VAMOS Call to 63.
- Set ATCB Thld Offset for VAMOS FR Multiplexing to 64.
- Set both ATCB Offset in Overlaid Subcell and RX Level Thld Offset for
VAMOS FR Multiplexing to 128.
f.
Start channel status monitoring in cell 0. Figure 6-21 shows the TCHF status in cell
0.
Figure 6-21 TCH/F status 1
g.
Use MS 1 to call a fixed-line phone in cell 0. After the call is connected, use MS 2
to call another fixed-line phone in cell 0.
h.
Check the TCH/F status in cell 0.
Expected result: The calls are processed properly and the call quality is good. MS 1
and MS 2 are multiplexed onto the same TCHF. Figure 6-22 shows the TCHF
status in cell 0.
Figure 6-22 TCH/F status 2
3.
Verify VAMOS FR channel multiplexing using an intra-cell handover.
Assume that the following conditions are true:
–
TCH/Fs are configured for cell 0 and the TCH/Fs are available.
–
MS 1 and MS 2 support SAIC.
–
The Abis interface uses IP transmission.
–
The BTS supports VAMOS FR.
a.
On the BSC LMT, perform the following steps: Run the SET GCELLCHMGAD
command with TCH Traffic Busy Threshold set to 100 and AMR TCH/H Prior
Allowed to OFF(Off).
b.
Run the SET GCELLCHMGBASIC command with both Ratio of TCHH and
Ratio of AMR-HR set to 0.
c.
Run the SET OTHSOFTPARA command with TCH Rate Modify to YES(Yes).
d.
Run the SET GCELLVAMOS command with its parameters set as follows:
- Set VAMOS Switch to VFR(VFR).
- Set Allow Channel Multiplex via In-Cell HO to ON(On).
- Set Load Threshold for VAMOS FR Multiplexing, OL Load Threshold for
VAMOS FR Multiplexing, and RX Quality Thld Offset for VAMOS FR
Multiplex to 0.
- Set ATCB Thres. of Established SAIC Calls to 1.
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- Set both UL Rx Qual. Thres. of Established Calls and DL Rx Qual. Thres. of
Established Calls to 70.
- Set Path Loss Offset Thres. of VAMOS Call to 63.
- Set ATCB Thld Offset for VAMOS FR Multiplexing to 64.
- Set both ATCB Offset in Overlaid Subcell and RX Level Thld Offset for
VAMOS FR Multiplexing to 128.
e.
Start channel status monitoring in cell 0. Figure 6-23 shows the TCHF status in cell
0.
Figure 6-23 TCH/F status 1
f.
Use MS 1 to call a fixed-line phone in cell 0. After the call is connected, use MS 2
to call another fixed-line phone in cell 0.
g.
Check the TCH/F status in cell 0.
Expected result: The calls are processed properly and the call quality is good. MS 1
and MS 2 occupy their respective TCHFs during call establishment. Figure 6-24
shows the TCHF status in cell 0.
Figure 6-24 TCH/F status 2
h.
MS 1 and MS 2 are multiplexed onto the same TCHF several seconds later. Figure
6-25 shows the TCHF status in cell 0.
Figure 6-25 TCH/F status 3
4.
Verify VAMOS FR channel demultiplexing due to low cell load.
Assume that the following conditions are true:
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TCH/Fs are configured for cell 0 and the TCH/Fs are available.
–
MS 1 and MS 2 support SAIC.
–
The Abis interface uses IP transmission.
–
The BTS supports VAMOS FR.
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a.
On the BSC LMT, perform the following steps: Run the SET GCELLCHMGAD
command with TCH Traffic Busy Threshold set to 100 and AMR TCH/H Prior
Allowed to OFF(Off).
b.
Run the SET GCELLCHMGBASIC command with both Ratio of TCHH and
Ratio of AMR-HR set to 0.
c.
Run the SET OTHSOFTPARA command with TCH Rate Modify to YES(Yes).
d.
Run the SET GCELLVAMOS command with its parameters set as follows:
- Set VAMOS Switch to VFR(VFR).
- Set Channel Demultiplex on Low Cell Load to ON(On).
- Set Load Threshold for VAMOS FR Multiplexing to 100.
- Set Load Thld for Low Load VAMOS FR Demultiplexing to 99.
e.
Start channel status monitoring in cell 0. Figure 6-26 shows the TCHF status in cell
0.
Figure 6-26 TCH/F status 1
f.
Use MS 1 to call a fixed-line phone in cell 0. After the call is connected, use MS 2
to call another fixed-line phone in cell 0.
g.
Check the TCH/F status in cell 0.
Expected result: The calls are processed properly and the call quality is good. MS 1
and MS 2 occupy their respective TCHFs during call establishment. Figure 6-27
shows the TCHF status in cell 0.
Figure 6-27 TCH/F status 2
h.
Run the SET FHO command to trigger VAMOS FR channel multiplexing using an
intra-cell handover. Check the TCHF status in cell 0. Figure 6-28 shows the TCHF
status in cell 0.
Figure 6-28 TCH/F status 3
i.
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Recheck the TCHF status after several seconds. Figure 6-29 shows the TCHF
status in cell 0.
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Figure 6-29 TCH/F status 4
Expected result: MS 1 and MS 2 are multiplexed onto the same TCH/F after the
handover for VAMOS FR channel multiplexing is performed. Several seconds later,
VAMOS FR channel demultiplexing is performed, and MS 1 and MS 2 occupy their
respective TCH/Fs.
5.
Verify VAMOS FR channel demultiplexing due to BQ.
Assume that the following conditions are true:
–
TCH/Fs are configured for cell 0 and the TCHFs are available.
–
MS 1 and MS 2 support SAIC.
–
The Abis interface uses IP transmission.
–
The BTS supports VAMOS FR.
a.
On the BSC LMT, perform the following steps: Run the SET GCELLCHMGAD
command with TCH Traffic Busy Threshold set to 100 and AMR TCH/H Prior
Allowed to OFF(Off).
b.
Run the SET GCELLCHMGBASIC command with both Ratio of TCHH and
Ratio of AMR-HR set to 0.
c.
Run the SET OTHSOFTPARA command with TCH Rate Modify to YES(Yes).
d.
Run the SET GCELLVAMOS command with its parameters set as follows:
- Set VAMOS Switch to VFR(VFR).
- Set Channel Demultiplex on Bad Qual. to ON(On).
- Set both UL RX Bad Qual. Demultiplex Thres. and DL RX Bad Qual.
Demultiplex Thres. to 0.
e.
Start channel status monitoring in cell 0. Figure 6-30 shows the TCHF status in cell
0.
Figure 6-30 TCH/F status 1
f.
Use MS 1 to call a fixed-line phone in cell 0. After the call is connected, use MS 2
to call another fixed-line phone in cell 0.
g.
Check the TCH/F status in cell 0.
Expected result: The calls are processed properly and the call quality is good. MS 1
and MS 2 occupy their respective TCHFs during call establishment. Figure 6-31
shows the TCHF status in cell 0.
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Figure 6-31 TCH/F status 2
h.
Run the SET FHO command to trigger VAMOS FR channel multiplexing using an
intra-cell handover. Check the TCHF status in cell 0. Figure 6-32 shows the TCHF
status in cell 0.
Figure 6-32 TCH/F status 3
i.
Recheck the TCHF status after several seconds. Figure 6-33 shows the TCHF
status in cell 0.
Figure 6-33 TCH/F status 4
Expected result: MS 1 and MS 2 are multiplexed onto the same TCH/F after the
handover for VAMOS FR channel multiplexing is performed. Several seconds later,
VAMOS FR channel demultiplexing is performed, and MS 1 and MS 2 occupy their
respective TCH/Fs.
6.
Verify optimization of VAMOS FR channel demultiplexing due to BQ.
Assume that the following conditions are true:
–
TCH/Fs are configured for cell 0 and the TCH/Fs are available.
–
MS 1 and MS 2 support SAIC.
–
The Abis interface uses IP transmission.
–
The BTS supports VAMOS FR.
a.
On the BSC LMT, perform the following steps: Run the SET GCELLCHMGAD
command with TCH Traffic Busy Threshold set to 100 and AMR TCH/H Prior
Allowed to OFF(Off).
b.
Run the SET GCELLCHMGBASIC command with both Ratio of TCHH and
Ratio of AMR-HR set to 0.
c.
Run the SET OTHSOFTPARA command with TCH Rate Modify to YES(Yes).
d.
Run the SET GCELLVAMOS command with its parameters set as follows:
- Set VAMOS Switch to VFR(VFR).
- Set Channel Demultiplex on Bad Qual. and BQ VAMOS Channel Demultiplex
Optimize to ON(On).
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- Set both UL RX Bad Qual. Demultiplex Thres. and DL RX Bad Qual.
Demultiplex Thres. to 0.
e.
The following steps are used as an example to verify that the BSC allows only BQ
handovers for VAMOS FR demultiplexing and prohibits other quality-based
handovers (including interference handovers, BQ handovers, and TCH/F-TCH/H
handovers) when the BQ handover algorithm is enabled:
Enable the BQ handover algorithm.
(1) Run the SET GCELLHOBASIC command with both Intracell HO Allowed
and BQ HO Allowed set to YES(Yes).
(2) Run the SET GCELLAMRQUL command with both UL Qual. Limit for
AMR FR and UL Qual. Limit for AMR HR set to 0.
(3) Run the SET GCELLAMRQUL command with both DL Qual. Limit for
AMR FR and DL Qual. Limit for AMR HR set to 0.
f.
Start channel status monitoring in cell 0. Figure 6-34 shows the TCHF status in cell
0.
Figure 6-34 TCH/F status 1
g.
Use MS 1 to call a fixed-line phone in cell 0. After the call is connected, use MS 2
to call another fixed-line phone in cell 0.
h.
Check the TCH/F status in cell 0.
Expected result: The calls are processed properly and the call quality is good. MS 1
and MS 2 occupy their respective TCHFs during call establishment. Figure 6-35
shows the TCHF status in cell 0.
Figure 6-35 TCH/F status 2
i.
Run the SET FHO command to trigger VAMOS FR channel multiplexing using an
intra-cell handover. Check the TCHF status in cell 0. Figure 6-36 shows the TCHF
status in cell 0.
Figure 6-36 TCH/F status 3
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j.
6 Engineering Guidelines
Check the TCH/F status in cell 0.
Expected result: Two MSs are being multiplexed onto the same TCH/F. No BQ
handover is performed.
k.
Recheck the TCHF status after several seconds. Figure 6-37 shows the TCHF
status in cell 0.
Figure 6-37 TCH/F status 4
Expected result: Several seconds after optimization of VAMOS FR channel demultiplexing
due to BQ is enabled, VAMOS FR channel demultiplexing is performed, and the call with
good voice quality is handed over to another TCH/F. A BQ handover is triggered on the call
with poor voice quality only when the timer specified by the BQ VAMOS Channel
Demultiplex Penalty Period parameter expires.
6.3.6 Deactivation
Using MML Commands
1.
(Optional) Disable the white SAIC MS identification function.
On the BSC LMT, run the SET GCELLVAMOS command with VAMOS Switch set to
ON(On) and SAIC White MS Identification Switch set to OFF(Off).
2.
3.
4.
5.
6.
Issue 03 (2015-09-07)
Deactivate VAMOS channel multiplexing using the assignment procedure.
a.
Run the SET GCELLVAMOS command with VAMOS Switch set to ON(On) and
Allow Channel Multiplex in Assignment set to OFF(Off).
b.
Run the SET GCELLVAMOS command with VAMOS Switch set to OFF(Off).
c.
Run the SET GCELLHOAD command with Waiting for MR on SDCCH Switch
set to OFF(Off).
Deactivate VAMOS channel multiplexing using an intra-cell handover.
a.
Run the SET GCELLVAMOS command with VAMOS Switch set to ON(On) and
Allow Channel Multiplex via In-Cell HO set to OFF(Off).
b.
Run the SET GCELLVAMOS command with VAMOS Switch set to OFF(Off).
Deactivate VAMOS channel demultiplexing due to low cell load.
a.
Run the SET GCELLVAMOS command with VAMOS Switch set to ON(On) and
Channel Demultiplex on Low Cell Load set to OFF(Off).
b.
Run the SET GCELLVAMOS command with VAMOS Switch set to OFF(Off).
Deactivate VAMOS channel demultiplexing due to BQ.
a.
Run the SET GCELLVAMOS command with VAMOS Switch set to ON(On) and
Channel Demultiplex on Bad Qual. set to OFF(Off).
b.
Run the SET GCELLVAMOS command with VAMOS Switch set to OFF(Off).
Deactivate optimization of VAMOS channel demultiplexing due to BQ.
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a.
Run the SET GCELLVAMOS command. In this step, set VAMOS Switch and
Channel Demultiplex on Bad Qual. to ON(On), set BQ VAMOS Channel
Demultiplex Optimize and Enable BQ VAMOS Channel Demultiplex Penalty to
OFF(Off).
b.
Run the SET GCELLVAMOS command with VAMOS Switch set to ON(On) and
Channel Demultiplex on Bad Qual. set to OFF(Off).
c.
Run the SET GCELLVAMOS command with VAMOS Switch set to OFF(Off).
MML Command Examples
//(Optional) Disabling the white SAIC MS identification function
SET GCELLVAMOS: IDTYPE=BYID, CELLID=0, VamosSwitch=ON, SaicWhtMsIdentSw
=OFF;
//Deactivating VAMOS channel multiplexing using the assignment procedure
SET GCELLVAMOS: IDTYPE=BYID, CELLID=0, VamosSwitch=ON,
VamosAssSwitch=OFF;
SET GCELLVAMOS: IDTYPE=BYID, CELLID=0, VamosSwitch=OFF;
SET GCELLHOAD: IDTYPE=BYID, CELLID=0, SDCCHWaitMREn=OFF;
//Deactivating VAMOS channel multiplexing using an intra-cell handover
SET GCELLVAMOS: IDTYPE=BYID, CELLID=0, VamosSwitch=ON,
VamosIntraHoSwitch=OFF;
SET GCELLVAMOS: IDTYPE=BYID, CELLID=0, VamosSwitch=OFF;
//Deactivating VAMOS channel demultiplexing due to low cell load
SET GCELLVAMOS: IDTYPE=BYID, CELLID=0, VamosSwitch=ON,
VamosLoadReuseSwitch=OFF;
SET GCELLVAMOS: IDTYPE=BYID, CELLID=0, VamosSwitch=OFF;
//Deactivating VAMOS channel demultiplexing due to BQ
SET GCELLVAMOS: IDTYPE=BYID, CELLID=0, VamosSwitch=ON,
VamosQualReuseSwitch=OFF;
SET GCELLVAMOS: IDTYPE=BYID, CELLID=0, VamosSwitch=OFF;
//Deactivating optimization of VAMOS channel demultiplexing due to BQ
SET GCELLVAMOS: IDTYPE=BYID, CELLID=0, VamosSwitch=ON,
VamosQualReuseSwitch=ON, VamosQualUndoPntSwitch=OFF,
VamosBQDemuxPenSw=OFF;
SET GCELLVAMOS: IDTYPE=BYID, CELLID=0, VamosSwitch=ON,
VamosQualReuseSwitch=OFF;
SET GCELLVAMOS: IDTYPE=BYID, CELLID=0, VamosSwitch=OFF;
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Using the CME
NOTE
When configuring the VAMOS feature on the CME, perform a single configuration first, and then
perform a batch modification if required. Configure the parameters of a single object before a batch
modification. Perform a batch modification before logging out of the parameter setting interface.
l
(Optional) Disabling the white SAIC MS identification function
Step 1 Configure a single object (such as a cell) on the CME.
Set parameters on the CME according to the operation sequence in Table 6-8. For instructions
on how to perform the CME single configuration, see CME Single Configuration Operation
Guide.
Step 2 (Optional) Modify objects in batches on the CME. (CME batch modification center)
To modify objects in batches, click the
icon on the CME to start the batch modification
wizard. For instructions on how to perform a batch modification through the CME batch
modification center, press F1 on the wizard interface to obtain online help.
----End
Table 6-8 Configuring parameters on the CME
SN
MO
NE
Parameter
Name
Parameter
ID
Configura
ble in CME
Batch
Modificati
on Center
1
GCELLVA
MOS
BSC6900/
BSC6910
VAMOS
Switch
VamosSwitc
h
Yes
SAIC White
MS
Identificatio
n Switch
SaicWhtMsI
dentSw
l
Deactivating VAMOS channel multiplexing using the assignment procedure
Step 1 Configure a single object (such as a cell) on the CME.
Set parameters on the CME according to the operation sequence in Table 6-9. For instructions
on how to perform the CME single configuration, see CME Single Configuration Operation
Guide.
Step 2 (Optional) Modify objects in batches on the CME. (CME batch modification center)
icon on the CME to start the batch modification
To modify objects in batches, click the
wizard. For instructions on how to perform a batch modification through the CME batch
modification center, press F1 on the wizard interface to obtain online help.
----End
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Table 6-9 Configuring parameters on the CME
SN
MO
NE
Parameter
Name
Parameter
ID
Configura
ble in CME
Batch
Modificati
on Center
1
GCELLVA
MOS
BSC6900/
BSC6910
VAMOS
Switch
VamosSwitc
h
Yes
Allow
Channel
Multiplex in
Assignment
VamosAssS
witch
VAMOS
Switch
VamosSwitc
h
Waiting for
MR on
SDCCH
Switch
SDCCHWait
MREn
2
l
GCELLHO
AD
BSC6900/
BSC6910
Yes
Deactivating VAMOS channel multiplexing using an intra-cell handover
Step 1 Configure a single object (such as a cell) on the CME.
Set parameters on the CME according to the operation sequence in Table 6-10. For
instructions on how to perform the CME single configuration, see CME Single
Configuration Operation Guide.
Step 2 (Optional) Modify objects in batches on the CME. (CME batch modification center)
icon on the CME to start the batch modification
To modify objects in batches, click the
wizard. For instructions on how to perform a batch modification through the CME batch
modification center, press F1 on the wizard interface to obtain online help.
----End
Table 6-10 Configuring parameters on the CME
Issue 03 (2015-09-07)
SN
MO
NE
Parameter
Name
Parameter
ID
Configura
ble in CME
Batch
Modificati
on Center
1
GCELLVA
MOS
BSC6900/
BSC6910
VAMOS
Switch
VamosSwitc
h
Yes
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MO
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NE
Parameter
Name
Parameter
ID
Allow
Channel
Multiplex
via In-Cell
HO
VamosIntra
HoSwitch
VAMOS
Switch
VamosSwitc
h
Configura
ble in CME
Batch
Modificati
on Center
Deactivating VAMOS channel demultiplexing due to low cell load
Step 1 Configure a single object (such as a cell) on the CME.
Set parameters on the CME according to the operation sequence in Table 6-11. For
instructions on how to perform the CME single configuration, see CME Single
Configuration Operation Guide.
Step 2 (Optional) Modify objects in batches on the CME. (CME batch modification center)
To modify objects in batches, click the
icon on the CME to start the batch modification
wizard. For instructions on how to perform a batch modification through the CME batch
modification center, press F1 on the wizard interface to obtain online help.
----End
Table 6-11 Configuring parameters on the CME
SN
MO
NE
Parameter
Name
Parameter
ID
Configura
ble in CME
Batch
Modificati
on Center
1
GCELLVA
MOS
BSC6900/
BSC6910
VAMOS
Switch
VamosSwitc
h
Yes
Channel
Demultiplex
on Low Cell
Load
VamosLoad
ReuseSwitch
VAMOS
Switch
VamosSwitc
h
l
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Deactivating VAMOS channel demultiplexing due to BQ
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Step 1 Configure a single object (such as a cell) on the CME.
Set parameters on the CME according to the operation sequence in Table 6-12. For
instructions on how to perform the CME single configuration, see CME Single
Configuration Operation Guide.
Step 2 (Optional) Modify objects in batches on the CME. (CME batch modification center)
icon on the CME to start the batch modification
To modify objects in batches, click the
wizard. For instructions on how to perform a batch modification through the CME batch
modification center, press F1 on the wizard interface to obtain online help.
----End
Table 6-12 Configuring parameters on the CME
SN
MO
NE
Parameter
Name
Parameter
ID
Configura
ble in CME
Batch
Modificati
on Center
1
GCELLVA
MOS
BSC6900/
BSC6910
VAMOS
Switch
VamosSwitc
h
Yes
Channel
Demultiplex
on Bad
Qual.
VamosQual
ReuseSwitch
VAMOS
Switch
VamosSwitc
h
l
Deactivating optimization of VAMOS channel demultiplexing due to BQ
Step 1 Configure a single object (such as a cell) on the CME.
Set parameters on the CME according to the operation sequence in Table 6-13. For
instructions on how to perform the CME single configuration, see CME Single
Configuration Operation Guide.
Step 2 (Optional) Modify objects in batches on the CME. (CME batch modification center)
icon on the CME to start the batch modification
To modify objects in batches, click the
wizard. For instructions on how to perform a batch modification through the CME batch
modification center, press F1 on the wizard interface to obtain online help.
----End
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Table 6-13 Configuring parameters on the CME
SN
MO
NE
Parameter
Name
Parameter ID
Configura
ble in CME
Batch
Modificati
on Center
1
GCELLVAM
OS
BSC6900/
BSC6910
VAMOS Switch
VamosSwitch
Yes
Channel
Demultiplex on
Bad Qual.
VamosQualReu
seSwitch
BQ VAMOS
Channel
Demultiplex
Optimize
VamosQualUnd
oPntSwitch
Enable BQ
VAMOS Channel
Demultiplex
Penalty
VamosBQDem
uxPenSw
2
3
GCELLVAM
OS
BSC6900/
BSC6910
VAMOS Switch
VamosSwitch
Channel
Demultiplex on
Bad Qual.
VamosQualReu
seSwitch
GCELLVAM
OS
BSC6900/
BSC6910
VAMOS Switch
VamosSwitch
Yes
Yes
6.4 Deploying VAMOS I&II Support
6.4.1 Deployment Requirements
Table 6-14 Deployment requirements
Issue 03 (2015-09-07)
Aspect
Requirement
Prerequisite
features
For details about the prerequisite features of VAMOS I&II Support, see
4.3.1 Prerequisite Features.
Mutually
exclusive
features
None
BSC hardware
None
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Aspect
Requirement
BTS hardware
3900 series base stations (excluding BTS3900B and BTS3900E) are
required because only this BTS model supports this feature.
VAMOS I MSs and VAMOS II MSs support this feature when UBBP
boards are configured. VAMOS I MSs and VAMOS II MSs also support
this feature when UBBP boards are not configured, if any of the
following RF modules is used: RRU3928, RRU3929, RRU3926,
RRU3942, RRU3936, RRU3938, RRU3939, RRU3961, MRFUd,
MRFUe, AAU3902, RRU3959, RRU3959w, RRU3952, RRU3953,
RRU3953w, AAU3920, RRU3962, RRU3962d, RRU3965, RRU3965d,
MRFUd V6, MRFUdw V6, RRU3952m, and AAU3911.
GSM
networking
None
MS
VAMOS I or VAMOS II MSs are used.
NOTE
Few VAMOS I or VAMOS II MSs are available for commercial use.
MSC
None
License
The license controlling this feature has been activated. For details about
the license control item, see License Control Item Description. For
details about how to activate the license, see License Management
Feature Parameter Description.
Others
None
6.4.2 Activation
Using MML Commands
On the BSC LMT, run the SET GCELLVAMOS command with VAMOS Switch and MS
Support VAMOS I&II Enable set to ON(On).
MML Command Examples
SET GCELLVAMOS: IDTYPE=BYID, CELLID=0, VamosSwitch=ON,
VamosMSEnable=ON;
Using the CME (Method 1)
NOTE
When configuring the VAMOS I&II Support feature on the CME, perform a single configuration first,
and then perform a batch modification if required.
Configure the parameters of a single object before a batch modification. Perform a batch modification
before logging out of the parameter setting interface.
l
Activating VAMOS channel multiplexing using the assignment procedure
Step 1 Configure a single object (such as a cell) on the CME.
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Set parameters on the CME according to the operation sequence in Table 6-15. For
instructions on how to perform the CME single configuration, see CME Single
Configuration Operation Guide.
Step 2 (Optional) Modify objects in batches on the CME. (CME batch modification center)
To modify objects in batches, click the
icon on the CME to start the batch modification
wizard. For instructions on how to perform a batch modification through the CME batch
modification center, press F1 on the wizard interface to obtain online help.
----End
Table 6-15 Configuring the parameter on the CME
SN
MO
NE
Parameter
Name
Parameter
ID
Configura
ble in CME
Batch
Modificati
on Center
1
GCELLVAMOS
BSC6900/
BSC6910
VAMOS Switch
VamosSwitc
h
Yes
MS Support
VAMOS I&II
Enable
VamosMSE
nable
Using the CME (Method 2)
This feature can be batch activated using the CME. For detailed operations, see the following
section in the CME product documentation or online help: CME Management > CME
Guidelines > Enhanced Feature Management > Feature Operation and Maintenance.
NOTE
The CME batch activation for the VAMOS feature includes that for the VAMOS FR and VAMOS I&II
Support features.
6.4.3 Activation Observation
l
Verifying VAMOS I&II Support on VAMOS I MSs
The following uses VHR multiplexing as an example to describe how to verify channel
multiplexing on VAMOS I MSs.
Assume that the following conditions are true:
–
Cell 0 is configured with TCHHs and the TCHHs are available.
–
Both MS 1 and MS 2 support VAMOS I.
–
The Abis interface uses IP transmission.
–
The BTS supports VAMOS I and VAMOS II.
–
VAMOS I&II Support has been activated on the BSS.
On the BSC LMT, perform the following steps:
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1.
Click the Trace tab. In Trace Navigation Tree, choose Trace > GSM Services > Single
User CS Trace. In the displayed dialog box, specify related information and select Abis
Interface Trace and Um Interface Trace in the Trace Interface Type area.
2.
Run the SET GCELLCHMGAD command with its parameters set as follows: Set TCH
Traffic Busy Threshold to 0. Set AMR TCH/H Prior Allowed to OFF(Off). Set Load
of UL-OL Cells Rate Select Allowed to NO(No).
3.
Run the SET GCELLHOAD command with Waiting for MR on SDCCH Switch set
to ON(On).
4.
Run the SET GCELLCHMGBASIC command with both Ratio of TCHH and Ratio
of AMR-HR set to 100.
5.
Run the SET OTHSOFTPARA command with TCH Rate Modify set to YES(Yes).
6.
Run the SET GCELLVAMOS command with its parameters set as follows: Set both
VAMOS Switch and Allow Channel Multiplex in Assignment to ON(On). Set MS
Support VAMOS I&II Enable to ON(On). Set Channel Multiplex Load Thres.,
Channel Multiplex ATCB Thres. Offset in Asgmt., Channel Multiplex Rx Qual.
Thres. Offset in Asgmt., and Load Thres. in Overlaid Subcell to 0. Set ATCB Thres.
of Established SAIC Call to 1. Set UL Rx Qual. Thres. of Established Calls and DL
Rx Qual. Thres. of Established Calls to 70. Set Path Loss Offset Thres. of VAMOS
Call to 63. Set ATCB Offset in Overlaid Subcell to 128.
7.
Start channel status monitoring in cell 0. Figure 6-38 shows the TCHH status in cell 0.
Figure 6-38 TCHH status 1
8.
Use MS 1 to call a fixed-line phone in cell 0. After the call is connected, use MS 2 to call
another fixed-line phone in cell 0.
9.
Check the TCHH status in cell 0.
Expected result: The calls are processed properly and the call quality is good. MS 1 and
MS 2 are multiplexed onto the same TCHH. Figure 6-39 shows the TCHH status in cell
0.
Figure 6-39 TCHH status 2
10. View the messages traced in the Single User CS Trace task.
Expected result: The channel-type IE in the Assignment Command message carries a
new TSC assigned by the BSC to MS 2, as shown in the following figure.
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NOTE
The new TSC carried in the channel-type IE may be one of the following:
l 1 1 0 0 0: TCH/F + ACCHs using TSC Set 2
l 1 1 1 0 T: TCH/H + ACCHs using TSC Set 2 (The T bit indicates the subchannel number coded in
binary.)
l
Verifying VAMOS I&II Support on VAMOS II MSs
The following uses VHR multiplexing as an example to describe how to verify channel
multiplexing on VAMOS II MSs.
Assume that the following conditions are true:
–
Cell 0 is configured with TCHHs and the TCHHs are available.
–
Both MS 1 and MS 2 support VAMOS II.
–
The Abis interface uses IP transmission.
–
The BTS supports VAMOS I and VAMOS II.
–
VAMOS I&II Support has been activated on the BSS.
On the BSC LMT, perform the following steps:
1.
Click the Trace tab. In Trace Navigation Tree, choose Trace > GSM Services > Single
User CS Trace. In the displayed dialog box, specify related information and select Abis
Interface Trace and Um Interface Trace in the Trace Interface Type area.
2.
Run the SET GCELLCHMGAD command with its parameters set as follows: Set TCH
Traffic Busy Threshold to 0. Set AMR TCH/H Prior Allowed to OFF(Off). Set Load
of UL-OL Cells Rate Select Allowed to NO(No).
3.
Run the SET GCELLHOAD command with Waiting for MR on SDCCH Switch set
to ON(On).
4.
Run the SET GCELLCHMGBASIC command with both Ratio of TCHH and Ratio
of AMR-HR set to 100.
5.
Run the SET OTHSOFTPARA command with TCH Rate Modify set to YES(Yes).
6.
Run the SET GCELLVAMOS command with its parameters set as follows: Set both
VAMOS Switch and Allow Channel Multiplex in Assignment to ON(On). Set MS
Support VAMOS I&II Enable to ON(On). Set Channel Multiplex Load Thres.,
Channel Multiplex ATCB Thres. Offset in Asgmt., Channel Multiplex Rx Qual.
Thres. Offset in Asgmt., and Load Thres. in Overlaid Subcell to 0. Set ATCB Thres.
of Established SAIC Call to 1. Set UL Rx Qual. Thres. of Established Calls and DL
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Rx Qual. Thres. of Established Calls to 70. Set Path Loss Offset Thres. of VAMOS
Call to 63. Set ATCB Offset in Overlaid Subcell to 128.
7.
Start channel status monitoring in cell 0. Figure 6-40 shows the TCHH status in cell 0.
Figure 6-40 TCHH status 1
8.
Use MS 1 to call a fixed-line phone in cell 0. After the call is connected, use MS 2 to call
another fixed-line phone in cell 0.
9.
Check the TCHH status in cell 0.
Expected result: The calls are processed properly and the call quality is good. MS 1 and
MS 2 are multiplexed onto the same TCHH. Figure 6-41 shows the TCHH status in cell
0.
Figure 6-41 TCHH status 2
10. View the messages traced in the Single User CS Trace task for MS 2.
Expected result: The channel-type IE in the Assignment Command message carries a
new TSC assigned by the BSC to MS 2, and the channel-mode-of-first-channel IE
indicates that VAMOS channel multiplexing has been started, as shown in the following
figure.
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NOTE
l The new TSC carried in the channel-type IE may be one of the following:
1 1 0 0 0: TCH/F + ACCHs using TSC Set 2
1 1 1 0 T: TCH/H + ACCHs using TSC Set 2 (The T bit indicates the subchannel number coded in
binary.)
l The status of VAMOS channel multiplexing in the channel-mode-of-first-channel IE may be
one of the following:
1 1 0 0 0 0 0 1: speech full rate or half rate version 1 in VAMOS mode
1 1 0 0 0 0 1 0: speech full rate or half rate version 2 in VAMOS mode
1 1 0 0 0 0 1 1: speech full rate or half rate version 3 in VAMOS mode
1 1 0 0 0 1 0 1: speech full rate or half rate version 5 in VAMOS mode
11. View the messages traced in the Single User CS Trace task for MS 1.
Expected result: The Channel Mode Modify message can be traced for MS 1, and the
channel-mode IE indicates that VAMOS channel multiplexing has been started, as shown
in the following figure.
NOTE
The status of VAMOS channel multiplexing in the channel-mode IE may be one of the following:
1 1 0 0 0 0 0 1: speech full rate or half rate version 1 in VAMOS mode
1 1 0 0 0 0 1 0: speech full rate or half rate version 2 in VAMOS mode
1 1 0 0 0 0 1 1: speech full rate or half rate version 3 in VAMOS mode
1 1 0 0 0 1 0 1: speech full rate or half rate version 5 in VAMOS mode
6.4.4 Deactivation
Using MML Commands
On the BSC LMT, run the SET GCELLVAMOS command with VAMOS Switch set to
ON(On) and MS Support VAMOS I&II Enable set to OFF(Off).
MML Command Examples
SET GCELLVAMOS: IDTYPE=BYID, CELLID=0, VamosSwitch=ON,
VamosMSEnable=OFF;
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Using the CME
NOTE
When configuring the VAMOS I&II Support feature on the CME, perform a single configuration first,
and then perform a batch modification if required. Configure the parameters of a single object before a
batch modification. Perform a batch modification before logging out of the parameter setting interface.
l
Deactivating VAMOS channel multiplexing using the assignment procedure
Step 1 Configure a single object (such as a cell) on the CME.
Set the parameter described in Table 6-16 on the CME. For instructions on how to perform
the CME single configuration, see CME Single Configuration Operation Guide.
Step 2 (Optional) Modify objects in batches on the CME. (CME batch modification center)
icon on the CME to start the batch modification
To modify objects in batches, click the
wizard. For instructions on how to perform a batch modification through the CME batch
modification center, press F1 on the wizard interface to obtain online help.
----End
Table 6-16 Configuring the parameter on the CME
Issue 03 (2015-09-07)
SN
MO
NE
Parameter
Name
Parameter
ID
Configura
ble in CME
Batch
Modificati
on Center
1
GCELLVAMOS
BSC6900/
BSC6910
VAMOS Switch
VamosSwitc
h
Yes
MS Support
VAMOS I&II
Enable
VamosMSE
nable
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7 Parameters
7
Parameters
Table 7-1 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
VamosB
QDemu
xPenSw
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Whether to enable the BQ VAMOS
demultiplexing penalty function. If this parameter is
set to ON, the BSC, after performing VAMOS channel
demulitplexing due to BQ on a pair of multiplexed
calls, performs penalty on the call with poorer quality.
In this case, the BSC forbids VAMOS channel
multiplexing on the call. If this parameter is set to
OFF, the BSC does not perform penalty on the call
with poorer quality.
GUI Value Range: OFF(Off), ON(On)
Unit: None
Actual Value Range: OFF, ON
Default Value: OFF(Off)
VamosB
QDemu
xPenSw
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Whether to enable the BQ VAMOS
demultiplexing penalty function. If this parameter is
set to ON, the BSC, after performing VAMOS channel
demulitplexing due to BQ on a pair of multiplexed
calls, performs penalty on the call with poorer quality.
In this case, the BSC forbids VAMOS channel
multiplexing on the call. If this parameter is set to
OFF, the BSC does not perform penalty on the call
with poorer quality.
GUI Value Range: OFF(Off), ON(On)
Unit: None
Actual Value Range: OFF, ON
Default Value: OFF(Off)
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
SaicWh
tMsIde
ntSw
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Whether to enable the SAIC white MS
identification function. An SAIC white MS refers to a
SAIC MS that supports Alpha-QPSK modulation. If
this parameter is set to ON, this function is enabled,
and the BSC identifies SAIC white MSs and can use
Alpha-QPSK modulation on the multiplexed SAIC
white MSs in the downlink. If this parameter is set to
OFF, this function is disabled.
GUI Value Range: OFF(Off), ON(On)
Unit: None
Actual Value Range: OFF, ON
Default Value: OFF(Off)
SaicWh
tMsIde
ntSw
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Whether to enable the SAIC white MS
identification function. An SAIC white MS refers to a
SAIC MS that supports Alpha-QPSK modulation. If
this parameter is set to ON, this function is enabled,
and the BSC identifies SAIC white MSs and can use
Alpha-QPSK modulation on the multiplexed SAIC
white MSs in the downlink. If this parameter is set to
OFF, this function is disabled.
GUI Value Range: OFF(Off), ON(On)
Unit: None
Actual Value Range: OFF, ON
Default Value: OFF(Off)
SaicWh
tMsIde
ntAlpha
UpThld
BSC690
0
SET
BSCEX
SOFTP
ARA
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Upper Alpha threshold for SAIC white MS
identification. To ensure call quality and identification
reliability, multiple rounds of identifications need to
be performed between the upper threshold specified
by this parameter and the lower threshold specified by
"SaicWhtMsIdentAlphaLwrThld".
GUI Value Range: 8~16
Unit: None
Actual Value Range: 0~8
Default Value: 10
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
SaicWh
tMsIde
ntAlpha
UpThld
BSC691
0
SET
BSCEX
SOFTP
ARA
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Upper Alpha threshold for SAIC white MS
identification. To ensure call quality and identification
reliability, multiple rounds of identifications need to
be performed between the upper threshold specified
by this parameter and the lower threshold specified by
"SaicWhtMsIdentAlphaLwrThld".
GUI Value Range: 8~16
Unit: None
Actual Value Range: 0~8
Default Value: 10
SaicWh
tMsIde
ntAlpha
LwrThl
d
BSC690
0
SET
BSCEX
SOFTP
ARA
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Lower Alpha threshold for SAIC white MS
identification. To ensure identification reliability and
the quality of calls that are initiated by identified
white SAIC MSs, multiple rounds of identifications
need to be performed between the upper threshold
specified by "SaicWhtMsIdentAlphaUpThld" and the
lower threshold specified by this parameter.
GUI Value Range: 0~8
Unit: None
Actual Value Range: -8~0
Default Value: 4
SaicWh
tMsIde
ntAlpha
LwrThl
d
BSC691
0
SET
BSCEX
SOFTP
ARA
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Lower Alpha threshold for SAIC white MS
identification. To ensure identification reliability and
the quality of calls that are initiated by identified
white SAIC MSs, multiple rounds of identifications
need to be performed between the upper threshold
specified by "SaicWhtMsIdentAlphaUpThld" and the
lower threshold specified by this parameter.
GUI Value Range: 0~8
Unit: None
Actual Value Range: -8~0
Default Value: 4
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
SaicWh
tIdentT
otalTim
e
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
Meaning:
GBFD-1
15830
VAMOS
This parameter is used to calculate the total duration
of SAIC white MS identification. The calculation
formula is as follows:
Total duration of SAIC white MS identification =
Value of this parameter x 2 x Value of
"SaicWhtIdentOnePrdTime" x MR period.
GUI Value Range: 1~30
Unit: None
Actual Value Range: 2~60, step:2
Default Value: 1
SaicWh
tIdentT
otalTim
e
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning:
This parameter is used to calculate the total duration
of SAIC white MS identification. The calculation
formula is as follows:
Total duration of SAIC white MS identification =
Value of this parameter x 2 x Value of
"SaicWhtIdentOnePrdTime" x MR period.
GUI Value Range: 1~30
Unit: None
Actual Value Range: 2~60, step:2
Default Value: 1
SaicWh
tIdentO
nePrdTi
me
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning:
Number of MRs for SAIC white MS identification in
a single period. This parameter is used to calculate the
single period of SAIC white MS identification. The
calculation formula is as follows:
Single period of SAIC white MS identification =
Value of this parameter x MR period
GUI Value Range: 5~30
Unit: None
Actual Value Range: 5~30
Default Value: 10
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
SaicWh
tIdentO
nePrdTi
me
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
Meaning:
GBFD-1
15830
VAMOS
Number of MRs for SAIC white MS identification in
a single period. This parameter is used to calculate the
single period of SAIC white MS identification. The
calculation formula is as follows:
Single period of SAIC white MS identification =
Value of this parameter x MR period
GUI Value Range: 5~30
Unit: None
Actual Value Range: 5~30
Default Value: 10
SaicWh
tAvgAb
nTimes
Thld
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Threshold for the number of times the mean
receive quality for SAIC white MS identification is
abnormal. During a SAIC white MS identification, if
the number of times the receive quality is abnormal is
greater than or equal to the value of this parameter, the
identification is terminated and the MS is not a SAIC
white MS.
GUI Value Range: 1~8
Unit: None
Actual Value Range: 1~8
Default Value: 1
SaicWh
tAvgAb
nTimes
Thld
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Threshold for the number of times the mean
receive quality for SAIC white MS identification is
abnormal. During a SAIC white MS identification, if
the number of times the receive quality is abnormal is
greater than or equal to the value of this parameter, the
identification is terminated and the MS is not a SAIC
white MS.
GUI Value Range: 1~8
Unit: None
Actual Value Range: 1~8
Default Value: 1
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
SaicWh
tAvgRx
QualBa
dThld
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
Meaning:
GBFD-1
15830
VAMOS
Threshold of mean uplink and downlink receive
quality difference for SAIC white MS identification.
In the downlink, the receive quality is considered
abnormal if the mean receive quality difference
between Alpha-QPSK modulation and GMSK
modulation is greater than the value of this parameter.
In the uplink, the receive quality is considered
abnormal if the mean receive quality difference for
GMSK modulation during two periods is greater than
the value of this parameter, where the period is
specified by "SaicWhtIdentOnePrdTime".
GUI Value Range: 5~50
Unit: None
Actual Value Range: 5~50
Default Value: 30
SaicWh
tAvgRx
QualBa
dThld
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning:
Threshold of mean uplink and downlink receive
quality difference for SAIC white MS identification.
In the downlink, the receive quality is considered
abnormal if the mean receive quality difference
between Alpha-QPSK modulation and GMSK
modulation is greater than the value of this parameter.
In the uplink, the receive quality is considered
abnormal if the mean receive quality difference for
GMSK modulation during two periods is greater than
the value of this parameter, where the period is
specified by "SaicWhtIdentOnePrdTime".
GUI Value Range: 5~50
Unit: None
Actual Value Range: 5~50
Default Value: 30
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
SaicWh
tMsIde
ntReqTi
mes
BSC690
0
SET
BSCEX
SOFTP
ARA
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Number of SAIC white MS identifications
the BSC needs to perform on a type of MS. When the
number of SAIC white MS identifications for a
specified Alpha value performed by the BSC on a type
of MS is greater than or equal to the value of this
parameter, the BSC determines the MS as a SAIC
white MS only if the number of times the MS is
identified as a SAIC white MS is greater than or equal
to the value of "SaicWhtMsIdentSatTimes".
GUI Value Range: 1~1000
Unit: None
Actual Value Range: 1~1000
Default Value: 200
SaicWh
tMsIde
ntReqTi
mes
BSC691
0
SET
BSCEX
SOFTP
ARA
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Number of SAIC white MS identifications
the BSC needs to perform on a type of MS. When the
number of SAIC white MS identifications for a
specified Alpha value performed by the BSC on a type
of MS is greater than or equal to the value of this
parameter, the BSC determines the MS as a SAIC
white MS only if the number of times the MS is
identified as a SAIC white MS is greater than or equal
to the value of "SaicWhtMsIdentSatTimes".
GUI Value Range: 1~1000
Unit: None
Actual Value Range: 1~1000
Default Value: 200
SaicWh
tMsIde
ntSatTi
mes
BSC690
0
SET
BSCEX
SOFTP
ARA
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Number of times a type of MS needs to be
identified as a SAIC white MS. When the number of
SAIC white MS identifications for a specified Alpha
value performed by the BSC on a type of MS is
greater than or equal to the value of
"SaicWhtMsIdentReqTimes", the BSC determines the
MS as a SAIC white MS only if the number of times
the MS is identified as a SAIC white MS is greater
than or equal to the value of this parameter.
GUI Value Range: 1~1000
Unit: None
Actual Value Range: 1~1000
Default Value: 120
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109
GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
SaicWh
tMsIde
ntSatTi
mes
BSC691
0
SET
BSCEX
SOFTP
ARA
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Number of times a type of MS needs to be
identified as a SAIC white MS. When the number of
SAIC white MS identifications for a specified Alpha
value performed by the BSC on a type of MS is
greater than or equal to the value of
"SaicWhtMsIdentReqTimes", the BSC determines the
MS as a SAIC white MS only if the number of times
the MS is identified as a SAIC white MS is greater
than or equal to the value of this parameter.
GUI Value Range: 1~1000
Unit: None
Actual Value Range: 1~1000
Default Value: 120
ICAdpS
cnIdent
OptSw
BSC690
0
SET
GCELL
OTHE
XT
GBFD-1
15801
ICC
EICC
GBFD-1
15821
Meaning: Whether to enable the interference
cancellation (IC) adaptive scenario identification
optimization function. If this parameter is set to ON,
the BSC optimizes the basic scenario identification
algorithm to improve the accuracy of identifying
interference scenarios and adaptively choose the
optimal IC algorithm based on the identification
results. If this parameter is set to OFF, the IC adaptive
scenario identification optimization function is
disabled.
GUI Value Range: OFF(Off), ON(On)
Unit: None
Actual Value Range: OFF, ON
Default Value: ON(On)
ICAdpS
cnIdent
OptSw
BSC691
0
SET
GCELL
OTHE
XT
GBFD-1
15801
GBFD-1
15821
ICC
EICC
Meaning: Whether to enable the interference
cancellation (IC) adaptive scenario identification
optimization function. If this parameter is set to ON,
the BSC optimizes the basic scenario identification
algorithm to improve the accuracy of identifying
interference scenarios and adaptively choose the
optimal IC algorithm based on the identification
results. If this parameter is set to OFF, the IC adaptive
scenario identification optimization function is
disabled.
GUI Value Range: OFF(Off), ON(On)
Unit: None
Actual Value Range: OFF, ON
Default Value: ON(On)
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
TSCUni
fySw
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Whether to enable the training sequence
code (TSC) normalization function. If this parameter
is set to ON, all TCHs (TCHHs/TCHFs) and PDCHs
use the primary TSCs for VAMOS channel
multiplexing during initial allocation, regardless of
whether frequency hopping (FH) is enabled, whether
CS, PS, or Dual Transfer Mode (DTM) services are
initiated, and whether the channels are on the BCCH
TRX or on a non-BCCH TRX; but the BCCH and
CCCH use the base station color code (BCC) as the
TSC. If this parameter is set to OFF, the TSC
normalization function does not take effect.
GUI Value Range: OFF(Off), ON(On)
Unit: None
Actual Value Range: OFF, ON
Default Value: ON(On)
TSCUni
fySw
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Whether to enable the training sequence
code (TSC) normalization function. If this parameter
is set to ON, all TCHs (TCHHs/TCHFs) and PDCHs
use the primary TSCs for VAMOS channel
multiplexing during initial allocation, regardless of
whether frequency hopping (FH) is enabled, whether
CS, PS, or Dual Transfer Mode (DTM) services are
initiated, and whether the channels are on the BCCH
TRX or on a non-BCCH TRX; but the BCCH and
CCCH use the base station color code (BCC) as the
TSC. If this parameter is set to OFF, the TSC
normalization function does not take effect.
GUI Value Range: OFF(Off), ON(On)
Unit: None
Actual Value Range: OFF, ON
Default Value: ON(On)
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
VamosS
witch
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
Meaning:
GBFD-1
15830
VAMOS
OFF: disable the VAMOS function;
Whether to enable the VAMOS function.
ON: enable VFR and VHR;
VHR: enable VHR only;
VFR: enable VFR only.
GUI Value Range: OFF(Off), ON(On), VFR(VFR),
VHR(VHR)
Unit: None
Actual Value Range: OFF, ON, VFR, VHR
Default Value: OFF(Off)
VamosS
witch
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
Meaning:
GBFD-1
15830
VAMOS
OFF: disable the VAMOS function;
Whether to enable the VAMOS function.
ON: enable VFR and VHR;
VHR: enable VHR only;
VFR: enable VFR only.
GUI Value Range: OFF(Off), ON(On), VFR(VFR),
VHR(VHR)
Unit: None
Actual Value Range: OFF, ON, VFR, VHR
Default Value: OFF(Off)
Vamos
MSEna
ble
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60217
VAMOS
I&II
Support
Meaning: Whether to support VAMOS I and II MSs.
The VAMOS performance of VAMOS I and VAMOS
II MSs is better than that of SAIC-capable MSs. If this
parameter is set to ON, the BSS supports VAMOS I
and VAMOS II MSs.
GUI Value Range: OFF(Off), ON(On)
Unit: None
Actual Value Range: OFF, ON
Default Value: ON(On)
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
Vamos
MSEna
ble
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60217
VAMOS
I&II
Support
Meaning: Whether to support VAMOS I and II MSs.
The VAMOS performance of VAMOS I and VAMOS
II MSs is better than that of SAIC-capable MSs. If this
parameter is set to ON, the BSS supports VAMOS I
and VAMOS II MSs.
GUI Value Range: OFF(Off), ON(On)
Unit: None
Actual Value Range: OFF, ON
Default Value: ON(On)
MSCV
ER
BSC690
0
SET
GCELL
CCUTR
ANSYS
GBFD-1
11804
A
Interface
Protocol
Process
Meaning: Protocol version of the MSC that is
connected to the BSC. The supported signaling varies
with the protocol versions. The setting of this
parameter must be consistent with the actual MSC
version.
GUI Value Range: R98_or_below(R98 or below),
R99_or_above(R99 or above)
Unit: None
Actual Value Range: R98_or_below, R99_or_above
Default Value: R99_or_above(R99 or above)
MSCV
ER
BSC691
0
SET
GCELL
CCUTR
ANSYS
GBFD-1
11804
A
Interface
Protocol
Process
Meaning: Protocol version of the MSC that is
connected to the BSC. The supported signaling varies
with the protocol versions. The setting of this
parameter must be consistent with the actual MSC
version.
GUI Value Range: R98_or_below(R98 or below),
R99_or_above(R99 or above)
Unit: None
Actual Value Range: R98_or_below, R99_or_above
Default Value: R99_or_above(R99 or above)
Issue 03 (2015-09-07)
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
ProSAI
CFlag
BSC690
0
ADD
GMSSA
ICCAP
GBFD-1
60201
VAMOS
FR
Meaning:
GBFD-1
15830
VAMOS
NOT_ALLOWED: The MS is a problem SAIC MS,
and VAMOS multiplexing cannot be performed.
MOD
GMSSA
ICCAP
GBFD-1
15832
VAMOS
Call
Drop
Solution
Capability identifier of a SAIC MS.
JUMP_ALPHA: VAMOS multiplexing can be
performed on the MS. However, whether AlphaQPSK modulation is supported is unknown, and
therefore the safer jump-Alpha modulation is used.
ALPHA_QPSK: The MS is a non-problem SAIC MS,
and VAMOS multiplexing using Alpha_QPSK
modulation can be performed on the MS.
UNCERTAIN: The MS is a mute-SAIC MS, but
whether it is a problem SAIC MS is not yet
determined.
NOTINVOLVED: The MS is SAIC-incapable, and
therefore the problem SAIC MS identification is not
needed.
JUMP_ALPHA_IDENTIFIED: VAMOS multiplexing
can be performed on the MS. However, Alpha-QPSK
modulation is not supported, and only jump-Alpha
modulation is used.
GUI Value Range: NOT_ALLOWED(Multiplexing
not allowed), JUMP_ALPHA(Alpha hopping
modulation or Alpha-QPSK modulation),
ALPHA_QPSK(Alpha-QPSK modulation),
UNCERTAIN(Unknown), NOTINVOLVED(Not
involved), JUMP_ALPHA_IDENTIFIED(Alpha
hopping modulation)
Unit: None
Actual Value Range: NOT_ALLOWED,
JUMP_ALPHA, ALPHA_QPSK, UNCERTAIN,
NOTINVOLVED, JUMP_ALPHA_IDENTIFIED
Default Value: None
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
ProSAI
CFlag
BSC691
0
ADD
GMSSA
ICCAP
GBFD-1
60201
VAMOS
FR
Meaning:
GBFD-1
15830
VAMOS
NOT_ALLOWED: The MS is a problem SAIC MS,
and VAMOS multiplexing cannot be performed.
MOD
GMSSA
ICCAP
GBFD-1
15832
VAMOS
Call
Drop
Solution
Capability identifier of a SAIC MS.
JUMP_ALPHA: VAMOS multiplexing can be
performed on the MS. However, whether AlphaQPSK modulation is supported is unknown, and
therefore the safer jump-Alpha modulation is used.
ALPHA_QPSK: The MS is a non-problem SAIC MS,
and VAMOS multiplexing using Alpha_QPSK
modulation can be performed on the MS.
UNCERTAIN: The MS is a mute-SAIC MS, but
whether it is a problem SAIC MS is not yet
determined.
NOTINVOLVED: The MS is SAIC-incapable, and
therefore the problem SAIC MS identification is not
needed.
JUMP_ALPHA_IDENTIFIED: VAMOS multiplexing
can be performed on the MS. However, Alpha-QPSK
modulation is not supported, and only jump-Alpha
modulation is used.
GUI Value Range: NOT_ALLOWED(Multiplexing
not allowed), JUMP_ALPHA(Alpha hopping
modulation or Alpha-QPSK modulation),
ALPHA_QPSK(Alpha-QPSK modulation),
UNCERTAIN(Unknown), NOTINVOLVED(Not
involved), JUMP_ALPHA_IDENTIFIED(Alpha
hopping modulation)
Unit: None
Actual Value Range: NOT_ALLOWED,
JUMP_ALPHA, ALPHA_QPSK, UNCERTAIN,
NOTINVOLVED, JUMP_ALPHA_IDENTIFIED
Default Value: None
Issue 03 (2015-09-07)
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
SpeMsI
deLoad
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15831
Mute
SAIC
MS
Identific
ation
Meaning: Load threshold for performing automatic
identification of mute SAIC-capable MSs, SAICcapable MSs with AFC defects, and SAIC white MSs
in a cell. MS identification request is triggered only
when cell load is lower than or equal to the value of
this parameter.
GBFD-1
15830
GBFD-1
15832
SpeMsI
deLoad
BSC691
0
SET
GCELL
VAMO
S
VAMOS
Unit: %
VAMOS
Call
Drop
Solution
Actual Value Range: 0~100
GBFD-1
60201
VAMOS
FR
GBFD-1
15831
Mute
SAIC
MS
Identific
ation
Meaning: Load threshold for performing automatic
identification of mute SAIC-capable MSs, SAICcapable MSs with AFC defects, and SAIC white MSs
in a cell. MS identification request is triggered only
when cell load is lower than or equal to the value of
this parameter.
GBFD-1
15830
GBFD-1
15832
SpeMsI
deMax
Calls
BSC690
0
SET
GCELL
VAMO
S
Default Value: 40
GUI Value Range: 0~100
VAMOS
Unit: %
VAMOS
Call
Drop
Solution
Actual Value Range: 0~100
GBFD-1
60201
VAMOS
FR
GBFD-1
15831
Mute
SAIC
MS
Identific
ation
Meaning: Maximum number of calls in a cell, on
which identification of mute SAIC-capable MSs,
identification of SAIC-capable MSs with AFC
defects, and identification of SAIC white MSs can be
performed simultaneously.
GBFD-1
15830
GBFD-1
15832
Issue 03 (2015-09-07)
GUI Value Range: 0~100
Default Value: 40
GUI Value Range: 1~63
Unit: None
VAMOS
Actual Value Range: 1~63
VAMOS
Call
Drop
Solution
Default Value: 20
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
SpeMsI
deMax
Calls
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15831
Mute
SAIC
MS
Identific
ation
Meaning: Maximum number of calls in a cell, on
which identification of mute SAIC-capable MSs,
identification of SAIC-capable MSs with AFC
defects, and identification of SAIC white MSs can be
performed simultaneously.
GBFD-1
15830
GBFD-1
15832
HRMsI
deAllow
ed
BSC690
0
SET
GCELL
VAMO
S
GUI Value Range: 1~63
Unit: None
VAMOS
Actual Value Range: 1~63
VAMOS
Call
Drop
Solution
Default Value: 20
GBFD-1
60201
VAMOS
FR
GBFD-1
15831
Mute
SAIC
MS
Identific
ation
Meaning: Whether or not to detect problem SAIC
MSs, mute SAIC MSs, or SAIC white MSs on
TCHHs. Half-rate calls have weak anti-interference
capabilities, and the MOS of half-rate calls is low.
Detecting such MSs on TCHHs is likely to cause user
experience to deteriorate. If this parameter is set to
OFF, the BSC is not allowed to detect problem SAIC
MSs, mute SAIC MSs, or SAIC white MSs on
TCHHs.
GBFD-1
15830
GBFD-1
15832
VAMOS
VAMOS
Call
Drop
Solution
GUI Value Range: OFF(Off), ON(On)
Unit: None
Actual Value Range: OFF, ON
Default Value: OFF(Off)
HRMsI
deAllow
ed
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15831
Mute
SAIC
MS
Identific
ation
GBFD-1
15830
GBFD-1
15832
VAMOS
VAMOS
Call
Drop
Solution
Meaning: Whether or not to detect problem SAIC
MSs, mute SAIC MSs, or SAIC white MSs on
TCHHs. Half-rate calls have weak anti-interference
capabilities, and the MOS of half-rate calls is low.
Detecting such MSs on TCHHs is likely to cause user
experience to deteriorate. If this parameter is set to
OFF, the BSC is not allowed to detect problem SAIC
MSs, mute SAIC MSs, or SAIC white MSs on
TCHHs.
GUI Value Range: OFF(Off), ON(On)
Unit: None
Actual Value Range: OFF, ON
Default Value: OFF(Off)
Issue 03 (2015-09-07)
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117
GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
SpeMsI
deLastT
imes
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15831
Mute
SAIC
MS
Identific
ation
Meaning: Duration in which uplink and downlink
quality, uplink and downlink levels, and ATCB of a
call meet the thresholds. If the duration in which
uplink and downlink quality,uplink and downlink
levels, and ATCB of a call meet the thresholds within
the time specified by "SpeMsIdeStatTimes" is greater
than or equal to the value of this parameter, MS
identification is allowed to be triggered.
GBFD-1
15830
GBFD-1
15832
VAMOS
VAMOS
Call
Drop
Solution
SpeMsI
deLastT
imes
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15831
Mute
SAIC
MS
Identific
ation
GBFD-1
15830
GBFD-1
15832
VAMOS
VAMOS
Call
Drop
Solution
SpeMsI
deStatT
imes
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15831
Mute
SAIC
MS
Identific
ation
GBFD-1
15830
GBFD-1
15832
VAMOS
VAMOS
Call
Drop
Solution
Issue 03 (2015-09-07)
GUI Value Range: 1~8
Unit: s
Actual Value Range: 1~8
Default Value: 3
Meaning: Duration in which uplink and downlink
quality, uplink and downlink levels, and ATCB of a
call meet the thresholds. If the duration in which
uplink and downlink quality,uplink and downlink
levels, and ATCB of a call meet the thresholds within
the time specified by "SpeMsIdeStatTimes" is greater
than or equal to the value of this parameter, MS
identification is allowed to be triggered.
GUI Value Range: 1~8
Unit: s
Actual Value Range: 1~8
Default Value: 3
Meaning: Observation period for uplink and downlink
quality, uplink and downlink levels, ATCB of a call. If
the duration in which uplink and downlink
quality,uplink and downlink levels, and ATCB of a
call meet the thresholds within the time specified by
this parameter is greater than or equal to the value of
"SpeMsIdeLastTimes", MS identification is allowed
to be triggered.
GUI Value Range: 1~8
Unit: s
Actual Value Range: 1~8
Default Value: 3
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
SpeMsI
deStatT
imes
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15831
Mute
SAIC
MS
Identific
ation
Meaning: Observation period for uplink and downlink
quality, uplink and downlink levels, ATCB of a call. If
the duration in which uplink and downlink
quality,uplink and downlink levels, and ATCB of a
call meet the thresholds within the time specified by
this parameter is greater than or equal to the value of
"SpeMsIdeLastTimes", MS identification is allowed
to be triggered.
GBFD-1
15830
GBFD-1
15832
VAMOS
VAMOS
Call
Drop
Solution
SpeMsI
deUlRxl
evThd
BSC690
0
SET
GCELL
VAMO
S
SET
GCELL
VAMO
S
Default Value: 3
GBFD-1
15831
Mute
SAIC
MS
Identific
ation
Meaning: Threshold of uplink receive level for
triggering automatic identification of mute SAIC MSs
and problem SAIC MSs. When the uplink receive
level of a call is lower than the value of this
parameter, automatic identification of such MSs is not
performed. The preceding rule is invalid if this
parameter is set to 0.
VAMOS
GUI Value Range: 0~127
VAMOS
Call
Drop
Solution
Unit: dB
GBFD-1
60201
VAMOS
FR
GBFD-1
15831
Mute
SAIC
MS
Identific
ation
Meaning: Threshold of uplink receive level for
triggering automatic identification of mute SAIC MSs
and problem SAIC MSs. When the uplink receive
level of a call is lower than the value of this
parameter, automatic identification of such MSs is not
performed. The preceding rule is invalid if this
parameter is set to 0.
VAMOS
GUI Value Range: 0~127
VAMOS
Call
Drop
Solution
Unit: dB
GBFD-1
15830
GBFD-1
15832
Issue 03 (2015-09-07)
Actual Value Range: 1~8
VAMOS
FR
GBFD-1
15832
BSC691
0
Unit: s
GBFD-1
60201
GBFD-1
15830
SpeMsI
deUlRxl
evThd
GUI Value Range: 1~8
Actual Value Range: 0~127
Default Value: 18
Actual Value Range: 0~127
Default Value: 18
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
SpeMsI
deDlRxl
evThd
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15831
Mute
SAIC
MS
Identific
ation
Meaning: Threshold of downlink receive level for
triggering automatic identification of mute SAIC MSs
and problem SAIC MSs. When the downlink receive
level of a call is lower than the value of this
parameter, automatic identification of such MSs is not
performed. The preceding rule is invalid if this
parameter is set to 0.
VAMOS
GUI Value Range: 0~127
VAMOS
Call
Drop
Solution
Unit: dB
GBFD-1
60201
VAMOS
FR
GBFD-1
15831
Mute
SAIC
MS
Identific
ation
Meaning: Threshold of downlink receive level for
triggering automatic identification of mute SAIC MSs
and problem SAIC MSs. When the downlink receive
level of a call is lower than the value of this
parameter, automatic identification of such MSs is not
performed. The preceding rule is invalid if this
parameter is set to 0.
VAMOS
GUI Value Range: 0~127
VAMOS
Call
Drop
Solution
Unit: dB
GBFD-1
60201
VAMOS
FR
GBFD-1
15831
Mute
SAIC
MS
Identific
ation
Meaning: Threshold of the uplink receive quality of a
call for triggering automatic identification of mute
SAIC-capable MSs and SAIC-capable MSs with AFC
defects. When the uplink receive quality of a call is
greater than the value of this parameter, automatic
identification of such MSs is not performed. When the
uplink receive quality of a call is lower than or equal
to the value of this parameter, automatic identification
of such MSs is performed.
GBFD-1
15830
GBFD-1
15832
SpeMsI
deDlRxl
evThd
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
15830
GBFD-1
15832
SpeMsI
deUlRx
QualTh
d
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
15830
GBFD-1
15832
VAMOS
VAMOS
Call
Drop
Solution
Actual Value Range: 0~127
Default Value: 25
Actual Value Range: 0~127
Default Value: 25
GUI Value Range: 0~70
Unit: None
Actual Value Range: 0~70
Default Value: 10
Issue 03 (2015-09-07)
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120
GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
SpeMsI
deUlRx
QualTh
d
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15831
Mute
SAIC
MS
Identific
ation
Meaning: Threshold of the uplink receive quality of a
call for triggering automatic identification of mute
SAIC-capable MSs and SAIC-capable MSs with AFC
defects. When the uplink receive quality of a call is
greater than the value of this parameter, automatic
identification of such MSs is not performed. When the
uplink receive quality of a call is lower than or equal
to the value of this parameter, automatic identification
of such MSs is performed.
GBFD-1
15830
GBFD-1
15832
VAMOS
VAMOS
Call
Drop
Solution
GUI Value Range: 0~70
Unit: None
Actual Value Range: 0~70
Default Value: 10
SpeMsI
deDlRx
QualTh
d
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15831
Mute
SAIC
MS
Identific
ation
GBFD-1
15830
GBFD-1
15832
VAMOS
VAMOS
Call
Drop
Solution
SpeMsI
deDlRx
QualTh
d
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15831
Mute
SAIC
MS
Identific
ation
GBFD-1
15830
GBFD-1
15832
VAMOS
VAMOS
Call
Drop
Solution
Issue 03 (2015-09-07)
Meaning: Threshold of the downlink receive quality
of a call for triggering automatic MS
identification.When the downlink receive quality of a
call is greater than the value of this parameter,
automatic identification of such MSs is not performed.
When the downlink receive quality of a call is lower
than or equal to the value of this parameter, automatic
identification of such MSs is performed.
GUI Value Range: 0~70
Unit: None
Actual Value Range: 0~70
Default Value: 10
Meaning: Threshold of the downlink receive quality
of a call for triggering automatic MS
identification.When the downlink receive quality of a
call is greater than the value of this parameter,
automatic identification of such MSs is not performed.
When the downlink receive quality of a call is lower
than or equal to the value of this parameter, automatic
identification of such MSs is performed.
GUI Value Range: 0~70
Unit: None
Actual Value Range: 0~70
Default Value: 10
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
SpeMsI
deAtcb
Thd
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15831
Mute
SAIC
MS
Identific
ation
Meaning: ATCB threshold of a call for triggering
automatic MS identification. When the ATCB of a call
is greater than or equal to the value of this parameter,
automatic identification of mute SAIC-capable MSs
and SAIC-capable MSs with AFC defects is
performed. The actual value of this parameter equals
the GUI value minus 64.
VAMOS
GUI Value Range: 1~127
VAMOS
Call
Drop
Solution
Unit: dB
GBFD-1
60201
VAMOS
FR
GBFD-1
15831
Mute
SAIC
MS
Identific
ation
Meaning: ATCB threshold of a call for triggering
automatic MS identification. When the ATCB of a call
is greater than or equal to the value of this parameter,
automatic identification of mute SAIC-capable MSs
and SAIC-capable MSs with AFC defects is
performed. The actual value of this parameter equals
the GUI value minus 64.
VAMOS
GUI Value Range: 1~127
VAMOS
Call
Drop
Solution
Unit: dB
VAMOS
FR
Meaning:
GBFD-1
15830
GBFD-1
15832
SpeMsI
deAtcb
Thd
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
15830
GBFD-1
15832
VFRLo
adThd
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60201
Actual Value Range: -63~63
Default Value: 68
Actual Value Range: -63~63
Default Value: 68
Load threshold for triggering VAMOS FR channel
multiplexing in a common cell or in the underlaid
subcell of a concentric cell. VAMOS FR channel
multiplexing using an intra-cell handover is triggered
only if the load in a common cell or in the underlaid
subcell of a concentric cell is greater than or equal to
the value of this parameter.
VAMOS FR channel multiplexing using channel
allocation is triggered only if the load in a common
cell or in the underlaid subcell of a concentric cell is
greater than or equal to the sum of this parameter and
"VAMOSASSLOADOFT".
GUI Value Range: 0~100
Unit: %
Actual Value Range: 0~100
Default Value: 50
Issue 03 (2015-09-07)
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122
GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
VFRLo
adThd
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
Meaning:
Load threshold for triggering VAMOS FR channel
multiplexing in a common cell or in the underlaid
subcell of a concentric cell. VAMOS FR channel
multiplexing using an intra-cell handover is triggered
only if the load in a common cell or in the underlaid
subcell of a concentric cell is greater than or equal to
the value of this parameter.
VAMOS FR channel multiplexing using channel
allocation is triggered only if the load in a common
cell or in the underlaid subcell of a concentric cell is
greater than or equal to the sum of this parameter and
"VAMOSASSLOADOFT".
GUI Value Range: 0~100
Unit: %
Actual Value Range: 0~100
Default Value: 50
VAMO
SASSL
OADO
FT
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Offset between the load threshold and the
handover multiplexing load threshold for VAMOS
channel multiplexing during assignment. When
VAMOS channel multiplexing during assignment is
enabled in common cells and underlaid subcells in
concentric cells, the decision procedure for VAMOS
channel multiplexing during assignment is triggered if
the cell load or load in the underlaid subcell is higher
than or equal to the sum of "VamosMultLoadThd" and
"VAMOSASSLOADOFT". When VAMOS channel
multiplexing during assignment is enabled in overlaid
subcells, the decision procedure for VAMOS channel
multiplexing during assignment is triggered if the load
in the overlaid subcell is higher than or equal to the
sum of "VamosIuoInnerLoadThd" and
"VAMOSASSLOADOFT". The actual value for this
parameter is the GUI value for this parameter minus
100.
GUI Value Range: 0~200
Unit: None
Actual Value Range: -100~100
Default Value: 100
Issue 03 (2015-09-07)
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123
GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
VAMO
SASSL
OADO
FT
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Offset between the load threshold and the
handover multiplexing load threshold for VAMOS
channel multiplexing during assignment. When
VAMOS channel multiplexing during assignment is
enabled in common cells and underlaid subcells in
concentric cells, the decision procedure for VAMOS
channel multiplexing during assignment is triggered if
the cell load or load in the underlaid subcell is higher
than or equal to the sum of "VamosMultLoadThd" and
"VAMOSASSLOADOFT". When VAMOS channel
multiplexing during assignment is enabled in overlaid
subcells, the decision procedure for VAMOS channel
multiplexing during assignment is triggered if the load
in the overlaid subcell is higher than or equal to the
sum of "VamosIuoInnerLoadThd" and
"VAMOSASSLOADOFT". The actual value for this
parameter is the GUI value for this parameter minus
100.
GUI Value Range: 0~200
Unit: None
Actual Value Range: -100~100
Default Value: 100
VFRIuo
InnerLo
adThd
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
Meaning: Load threshold for triggering VAMOS FR
channel multiplexing in the overlaid subcell of a
concentric cell. VAMOS FR channel multiplexing
using an intra-cell handover is triggered only if the
load in the overlaid subcell of a concentric cell is
greater than or equal to the value of this parameter.
VAMOS FR channel multiplexing using channel
allocation is triggered only if the load in the overlaid
subcell of a concentric cell is greater than or equal to
the sum of this parameter and
"VAMOSASSLOADOFT".
GUI Value Range: 0~100
Unit: %
Actual Value Range: 0~100
Default Value: 50
Issue 03 (2015-09-07)
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124
GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
VFRIuo
InnerLo
adThd
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
Meaning: Load threshold for triggering VAMOS FR
channel multiplexing in the overlaid subcell of a
concentric cell. VAMOS FR channel multiplexing
using an intra-cell handover is triggered only if the
load in the overlaid subcell of a concentric cell is
greater than or equal to the value of this parameter.
VAMOS FR channel multiplexing using channel
allocation is triggered only if the load in the overlaid
subcell of a concentric cell is greater than or equal to
the sum of this parameter and
"VAMOSASSLOADOFT".
GUI Value Range: 0~100
Unit: %
Actual Value Range: 0~100
Default Value: 50
Vamos
MultLo
adThd
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
15830
VAMOS
Meaning: Load threshold for triggering VAMOS HR
channel multiplexing in a common cell or in the
underlaid subcell of a concentric cell. VAMOS HR
channel multiplexing using an intra-cell handover is
triggered only when the load in a common cell or in
the underlaid subcell of a concentric cell is greater
than or equal to the value of this parameter. VAMOS
HR channel multiplexing using channel allocation is
triggered only when the load in a common cell or in
the underlaid subcell of a concentric cell is greater
than or equal to the sum of this parameter and
"VAMOSASSLOADOFT".
GUI Value Range: 0~100
Unit: %
Actual Value Range: 0~100
Default Value: 75
Issue 03 (2015-09-07)
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125
GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
Vamos
MultLo
adThd
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
15830
VAMOS
Meaning: Load threshold for triggering VAMOS HR
channel multiplexing in a common cell or in the
underlaid subcell of a concentric cell. VAMOS HR
channel multiplexing using an intra-cell handover is
triggered only when the load in a common cell or in
the underlaid subcell of a concentric cell is greater
than or equal to the value of this parameter. VAMOS
HR channel multiplexing using channel allocation is
triggered only when the load in a common cell or in
the underlaid subcell of a concentric cell is greater
than or equal to the sum of this parameter and
"VAMOSASSLOADOFT".
GUI Value Range: 0~100
Unit: %
Actual Value Range: 0~100
Default Value: 75
VamosI
uoInner
LoadTh
d
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
15830
VAMOS
Meaning: Load threshold for triggering VAMOS HR
channel multiplexing in the overlaid subcell of a
concentric cell. VAMOS HR channel multiplexing
using an intra-cell handover is triggered only when the
load of the overlaid subcell of a concentric cell is
greater than or equal to the value of this parameter.
VAMOS HR channel multiplexing using channel
allocation is triggered only when the load of the
overlaid subcell of a concentric cell is greater than or
equal to the sum of this parameter and
"VAMOSASSLOADOFT".
GUI Value Range: 0~100
Unit: %
Actual Value Range: 0~100
Default Value: 75
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
VamosI
uoInner
LoadTh
d
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
15830
VAMOS
Meaning: Load threshold for triggering VAMOS HR
channel multiplexing in the overlaid subcell of a
concentric cell. VAMOS HR channel multiplexing
using an intra-cell handover is triggered only when the
load of the overlaid subcell of a concentric cell is
greater than or equal to the value of this parameter.
VAMOS HR channel multiplexing using channel
allocation is triggered only when the load of the
overlaid subcell of a concentric cell is greater than or
equal to the sum of this parameter and
"VAMOSASSLOADOFT".
GUI Value Range: 0~100
Unit: %
Actual Value Range: 0~100
Default Value: 75
VamosI
ntraHo
NoneSai
cAtcbT
hd
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: ATCB threshold of an established nonSAIC call to be selected as a candidate call for
VAMOS channel multiplexing. The decision on an
established Non-SAIC call can be triggered
successfully only when the following conditions are
met: The ATCB of the call is greater than or equal to
the value of this parameter. The uplink receive quality
is lower than or equal to "UL Rx Qual. Thres. of
Established Calls". The downlink receive quality is
lower than or equal to "DL Rx Qual. Thres. of
Established Calls". If the decision conditions are met
for "Duration of Satisfying Candidate VAMOS Call"
within "Watch Time of Candidate Calls", this call can
be selected as a VAMOS candidate call. The actual
value of this parameter equals the GUI value minus
64.
GUI Value Range: 1~127
Unit: dB
Actual Value Range: -63~63
Default Value: 82
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
VamosI
ntraHo
NoneSai
cAtcbT
hd
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: ATCB threshold of an established nonSAIC call to be selected as a candidate call for
VAMOS channel multiplexing. The decision on an
established Non-SAIC call can be triggered
successfully only when the following conditions are
met: The ATCB of the call is greater than or equal to
the value of this parameter. The uplink receive quality
is lower than or equal to "UL Rx Qual. Thres. of
Established Calls". The downlink receive quality is
lower than or equal to "DL Rx Qual. Thres. of
Established Calls". If the decision conditions are met
for "Duration of Satisfying Candidate VAMOS Call"
within "Watch Time of Candidate Calls", this call can
be selected as a VAMOS candidate call. The actual
value of this parameter equals the GUI value minus
64.
GUI Value Range: 1~127
Unit: dB
Actual Value Range: -63~63
Default Value: 82
Vamos
AssMul
tAtcbOf
fset
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Offset of the ATCB for a new call from the
ATCB threshold for existing calls, if the new call is to
be selected as a candidate VAMOS HR call during
channel allocation. If the new call is a Non-SAIC call
in a common cell or in the underlaid subcell of a
concentric cell, the ATCB for the new call must be
greater than or equal to the sum of the values of
"VamosIntraHoNoneSaicAtcbThd" and
"VamosAssMultAtcbOffset". If the new call is a NonSAIC call in the overlaid subcell of a concentric cell,
the ATCB for the new call must be greater than or
equal to the sum of "VamosIntraHoNoneSaicAtcbThd", "VamosAssMultAtcbOffset", and
"VamosIuoInnerAtcbThd". The preceding rules apply
to SAIC calls, VAMOS I calls, and VAMOS II calls
that are newly set up.
GUI Value Range: 0~63
Unit: dB
Actual Value Range: 0~63
Default Value: 2
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
Vamos
AssMul
tAtcbOf
fset
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Offset of the ATCB for a new call from the
ATCB threshold for existing calls, if the new call is to
be selected as a candidate VAMOS HR call during
channel allocation. If the new call is a Non-SAIC call
in a common cell or in the underlaid subcell of a
concentric cell, the ATCB for the new call must be
greater than or equal to the sum of the values of
"VamosIntraHoNoneSaicAtcbThd" and
"VamosAssMultAtcbOffset". If the new call is a NonSAIC call in the overlaid subcell of a concentric cell,
the ATCB for the new call must be greater than or
equal to the sum of "VamosIntraHoNoneSaicAtcbThd", "VamosAssMultAtcbOffset", and
"VamosIuoInnerAtcbThd". The preceding rules apply
to SAIC calls, VAMOS I calls, and VAMOS II calls
that are newly set up.
GUI Value Range: 0~63
Unit: dB
Actual Value Range: 0~63
Default Value: 2
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
VamosI
ntraHo
SaicAtc
bThd
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
Meaning:
GBFD-1
15830
VAMOS
ATCB threshold of an established SAIC call to be
selected as a candidate call for VAMOS channel
multiplexing. The decision on an established SAIC
call can be triggered successfully only when all of the
following conditions are met: 1. The ATCB of the call
is greater than or equal to the value of this parameter.
2. The uplink receive quality is smaller than or equal
to "VamosIntraHoUlQualThd". 3. The downlink
receive quality is smaller than or equal to
"VamosIntraHoDlQualThd".
4. The uplink receive level is greater than or equal to
"VamosIntraHoUlRxlevThd". 5. The downlink receive
level is greater than or equal to "VamosIntraHoDlRxlevThd". 6. The absolute value of the difference
between main and diversity receive levels is less than
or equal to "VamosAntUlRxlevDiffThd".
If the decision conditions are met for
"VamosOldCallLastTimes" within
"VamosOldCallStatTimes", this call can be selected as
a candidate VAMOS call. Otherwise, this call cannot
be selected as a candidate VAMOS call. The actual
value of this parameter equals the GUI value minus
64.
GUI Value Range: 1~127
Unit: dB
Actual Value Range: -63~63
Default Value: 66
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130
GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
VamosI
ntraHo
SaicAtc
bThd
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
Meaning:
GBFD-1
15830
VAMOS
ATCB threshold of an established SAIC call to be
selected as a candidate call for VAMOS channel
multiplexing. The decision on an established SAIC
call can be triggered successfully only when all of the
following conditions are met: 1. The ATCB of the call
is greater than or equal to the value of this parameter.
2. The uplink receive quality is smaller than or equal
to "VamosIntraHoUlQualThd". 3. The downlink
receive quality is smaller than or equal to
"VamosIntraHoDlQualThd".
4. The uplink receive level is greater than or equal to
"VamosIntraHoUlRxlevThd". 5. The downlink receive
level is greater than or equal to "VamosIntraHoDlRxlevThd". 6. The absolute value of the difference
between main and diversity receive levels is less than
or equal to "VamosAntUlRxlevDiffThd".
If the decision conditions are met for
"VamosOldCallLastTimes" within
"VamosOldCallStatTimes", this call can be selected as
a candidate VAMOS call. Otherwise, this call cannot
be selected as a candidate VAMOS call. The actual
value of this parameter equals the GUI value minus
64.
GUI Value Range: 1~127
Unit: dB
Actual Value Range: -63~63
Default Value: 66
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
VamosI
ntraHo
Vamos1
AtcbTh
d
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
Meaning:
GBFD-1
15830
VAMOS
ATCB threshold of an established VAMOS-1 call to
be selected as a candidate call for VAMOS HR
channel multiplexing. The decision on an established
VAMOS-1 call can be triggered successfully only
when all of the following conditions are met: 1. The
ATCB of the call is greater than or equal to the value
of this parameter. 2. The uplink receive quality is
smaller than or equal to "VamosIntraHoUlQualThd".
3. The downlink receive quality is smaller than or
equal to "VamosIntraHoDlQualThd".
4. The uplink receive level is greater than or equal to
"VamosIntraHoUlRxlevThd". 5. The downlink receive
level is greater than or equal to "VamosIntraHoDlRxlevThd". 6. The absolute value of the difference
between main and diversity receive levels is less than
or equal to "VamosAntUlRxlevDiffThd".
If the decision conditions are met for
"VamosOldCallLastTimes" within
"VamosOldCallStatTimes", this call can be selected as
a candidate VAMOS call. Otherwise, this call cannot
be selected as a candidate VAMOS call. The actual
value of this parameter equals the GUI value minus
64.
GUI Value Range: 1~127
Unit: dB
Actual Value Range: -63~63
Default Value: 66
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VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
VamosI
ntraHo
Vamos1
AtcbTh
d
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
Meaning:
GBFD-1
15830
VAMOS
ATCB threshold of an established VAMOS-1 call to
be selected as a candidate call for VAMOS HR
channel multiplexing. The decision on an established
VAMOS-1 call can be triggered successfully only
when all of the following conditions are met: 1. The
ATCB of the call is greater than or equal to the value
of this parameter. 2. The uplink receive quality is
smaller than or equal to "VamosIntraHoUlQualThd".
3. The downlink receive quality is smaller than or
equal to "VamosIntraHoDlQualThd".
4. The uplink receive level is greater than or equal to
"VamosIntraHoUlRxlevThd". 5. The downlink receive
level is greater than or equal to "VamosIntraHoDlRxlevThd". 6. The absolute value of the difference
between main and diversity receive levels is less than
or equal to "VamosAntUlRxlevDiffThd".
If the decision conditions are met for
"VamosOldCallLastTimes" within
"VamosOldCallStatTimes", this call can be selected as
a candidate VAMOS call. Otherwise, this call cannot
be selected as a candidate VAMOS call. The actual
value of this parameter equals the GUI value minus
64.
GUI Value Range: 1~127
Unit: dB
Actual Value Range: -63~63
Default Value: 66
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
VamosI
ntraHo
Vamos2
AtcbTh
d
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
Meaning:
GBFD-1
15830
VAMOS
ATCB threshold of an established VAMOS-2 call to
be selected as a candidate call for VAMOS channel
multiplexing. The decision on an established
VAMOS-2 call can be triggered successfully only
when all of the following conditions are met: 1. The
ATCB of the call is greater than or equal to the value
of this parameter. 2. The uplink receive quality is
smaller than or equal to "VamosIntraHoUlQualThd".
3. The downlink receive quality is smaller than or
equal to "VamosIntraHoDlQualThd".
4. The uplink receive level is greater than or equal to
"VamosIntraHoUlRxlevThd". 5. The downlink receive
level is greater than or equal to "VamosIntraHoDlRxlevThd". 6. The absolute value of the difference
between main and diversity receive levels is less than
or equal to "VamosAntUlRxlevDiffThd".
If the decision conditions are met for
"VamosOldCallLastTimes" within
"VamosOldCallStatTimes", this call can be selected as
a candidate VAMOS call. Otherwise, this call cannot
be selected as a candidate VAMOS call. The actual
value of this parameter equals the GUI value minus
64.
GUI Value Range: 1~127
Unit: dB
Actual Value Range: -63~63
Default Value: 66
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
VamosI
ntraHo
Vamos2
AtcbTh
d
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
Meaning:
GBFD-1
15830
VAMOS
ATCB threshold of an established VAMOS-2 call to
be selected as a candidate call for VAMOS channel
multiplexing. The decision on an established
VAMOS-2 call can be triggered successfully only
when all of the following conditions are met: 1. The
ATCB of the call is greater than or equal to the value
of this parameter. 2. The uplink receive quality is
smaller than or equal to "VamosIntraHoUlQualThd".
3. The downlink receive quality is smaller than or
equal to "VamosIntraHoDlQualThd".
4. The uplink receive level is greater than or equal to
"VamosIntraHoUlRxlevThd". 5. The downlink receive
level is greater than or equal to "VamosIntraHoDlRxlevThd". 6. The absolute value of the difference
between main and diversity receive levels is less than
or equal to "VamosAntUlRxlevDiffThd".
If the decision conditions are met for
"VamosOldCallLastTimes" within
"VamosOldCallStatTimes", this call can be selected as
a candidate VAMOS call. Otherwise, this call cannot
be selected as a candidate VAMOS call. The actual
value of this parameter equals the GUI value minus
64.
GUI Value Range: 1~127
Unit: dB
Actual Value Range: -63~63
Default Value: 66
VamosI
uoInner
AtcbTh
d
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Offset of the ATCB of a new call in the
overlaid subcell from the ATCB threshold of a new
call in the underlaid subcell if the new call in the
overlaid subcell is to be selected as a VAMOS
candidate call during assignment.
GUI Value Range: 1~255
Unit: dB
Actual Value Range: -127~127
Default Value: 130
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
VamosI
uoInner
AtcbTh
d
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Offset of the ATCB of a new call in the
overlaid subcell from the ATCB threshold of a new
call in the underlaid subcell if the new call in the
overlaid subcell is to be selected as a VAMOS
candidate call during assignment.
GUI Value Range: 1~255
Unit: dB
Actual Value Range: -127~127
Default Value: 130
VFRAtc
bOffset
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
Meaning: ATCB threshold offset of the decision on
candidate VAMOS FR calls from that on candidate
VAMOS HR calls. The adaptive cell border (ATCB)
of a non-Single Antenna Interference Cancellation
(SAIC) MS that newly accesses a common cell or the
underlaid subcell of a concentric cell must be greater
than or equal to the sum of "VamosIntraHoNoneSaicAtcbThd", "VamosAssMultAtcbOffset", and this
parameter. The ATCB of a non-SAIC MS that has
accessed a common cell or the underlaid subcell of a
concentric cell must be greater than or equal to the
sum of "VamosIntraHoNoneSaicAtcbThd" and this
parameter. The ATCB of a non-SAIC MS that newly
accesses the overlaid subcell of a concentric cell must
be greater than equal to the sum of
"VamosIntraHoNoneSaicAtcbThd",
"VamosAssMultAtcbOffset",
"VamosIuoInnerAtcbThd", and this parameter. The
ATCB of a non-SAIC MS that has accessed the
overlaid subcell of a concentric cell must be greater
than or equal to the sum of "VamosIntraHoNoneSaicAtcbThd", "VamosIuoInnerAtcbThd", and this
parameter. The preceding rules apply to SAIC MSs,
VAMOS I MSs, and VAMOS II MSs. The actual
value of this parameter equals to the current value of
this parameter minus 64. If this parameter is set to a
value less than 64, the actual value is a negative value.
GUI Value Range: 1~127
Unit: dB
Actual Value Range: -63~63
Default Value: 64
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
VFRAtc
bOffset
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
Meaning: ATCB threshold offset of the decision on
candidate VAMOS FR calls from that on candidate
VAMOS HR calls. The adaptive cell border (ATCB)
of a non-Single Antenna Interference Cancellation
(SAIC) MS that newly accesses a common cell or the
underlaid subcell of a concentric cell must be greater
than or equal to the sum of "VamosIntraHoNoneSaicAtcbThd", "VamosAssMultAtcbOffset", and this
parameter. The ATCB of a non-SAIC MS that has
accessed a common cell or the underlaid subcell of a
concentric cell must be greater than or equal to the
sum of "VamosIntraHoNoneSaicAtcbThd" and this
parameter. The ATCB of a non-SAIC MS that newly
accesses the overlaid subcell of a concentric cell must
be greater than equal to the sum of
"VamosIntraHoNoneSaicAtcbThd",
"VamosAssMultAtcbOffset",
"VamosIuoInnerAtcbThd", and this parameter. The
ATCB of a non-SAIC MS that has accessed the
overlaid subcell of a concentric cell must be greater
than or equal to the sum of "VamosIntraHoNoneSaicAtcbThd", "VamosIuoInnerAtcbThd", and this
parameter. The preceding rules apply to SAIC MSs,
VAMOS I MSs, and VAMOS II MSs. The actual
value of this parameter equals to the current value of
this parameter minus 64. If this parameter is set to a
value less than 64, the actual value is a negative value.
GUI Value Range: 1~127
Unit: dB
Actual Value Range: -63~63
Default Value: 64
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
Vamos
QualUn
doPntS
witch
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Whether to optimize bad quality (BQ)
VAMOS channel demultiplexing handovers. If this
parameter is set to ON, quality-based handovers
(interference, BQ and TCHF-to-TCHH handover)
except BQ VAMOS channel demultiplexing
handovers are not allowed for VAMOS calls. During
such a handover, a call with good signal quality is
handed over to another channel, whereas a call with
poor signal quality cannot be handed over through any
quality-based handovers during the penalty period
specified by "BQ VAMOS Channel Demultiplex
Penalty Period".
GUI Value Range: OFF(Off), ON(On)
Unit: None
Actual Value Range: OFF, ON
Default Value: ON(On)
Vamos
QualUn
doPntS
witch
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Whether to optimize bad quality (BQ)
VAMOS channel demultiplexing handovers. If this
parameter is set to ON, quality-based handovers
(interference, BQ and TCHF-to-TCHH handover)
except BQ VAMOS channel demultiplexing
handovers are not allowed for VAMOS calls. During
such a handover, a call with good signal quality is
handed over to another channel, whereas a call with
poor signal quality cannot be handed over through any
quality-based handovers during the penalty period
specified by "BQ VAMOS Channel Demultiplex
Penalty Period".
GUI Value Range: OFF(Off), ON(On)
Unit: None
Actual Value Range: OFF, ON
Default Value: ON(On)
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
Vamos
QualUn
doPntTi
mer
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: When VAMOS channel demultiplexing due
to BQ is performed, a call with good signal quality is
handed over to another channel, whereas a call with
poor signal quality cannot be handed over through any
quality-based handovers (interference, BQ, or TCHF/
TCHH handovers). This parameter specifies the
period during which quality-based handovers or
VAMOS multiplexing cannot be performed on a call
with poor signal quality.
GUI Value Range: 0~255
Unit: s
Actual Value Range: 0~255
Default Value: 5
Vamos
QualUn
doPntTi
mer
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: When VAMOS channel demultiplexing due
to BQ is performed, a call with good signal quality is
handed over to another channel, whereas a call with
poor signal quality cannot be handed over through any
quality-based handovers (interference, BQ, or TCHF/
TCHH handovers). This parameter specifies the
period during which quality-based handovers or
VAMOS multiplexing cannot be performed on a call
with poor signal quality.
GUI Value Range: 0~255
Unit: s
Actual Value Range: 0~255
Default Value: 5
DATAQ
UAFLT
LEN
BSC690
0
SET
GCELL
HOFIT
PEN
GBFD-1
10601
GBFD-5
10501
HUAW
EI I
Handov
er
HUAW
EI II
Handov
er
Meaning: Number of measurement reports sampled
for averaging the signal quality on a speech or data
channel. Averaging the signal quality in multiple
measurement reports helps to prevent sharp
deterioration of the signal quality due to Rayleigh
fading and to ensure a comprehensive handover
decision.
GUI Value Range: 1~31
Unit: 480ms
Actual Value Range: 480~14880
Default Value: 4
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139
GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
DATAQ
UAFLT
LEN
BSC691
0
SET
GCELL
HOFIT
PEN
GBFD-1
10601
HUAW
EI I
Handov
er
Meaning: Number of measurement reports sampled
for averaging the signal quality on a speech or data
channel. Averaging the signal quality in multiple
measurement reports helps to prevent sharp
deterioration of the signal quality due to Rayleigh
fading and to ensure a comprehensive handover
decision.
GBFD-5
10501
HUAW
EI II
Handov
er
GUI Value Range: 1~31
Unit: 480ms
Actual Value Range: 480~14880
Default Value: 4
Vamos
QualRe
useStat
Times
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Duration for observing the receive quality
of a VAMOS call in the decision of channel
demultiplexing due to poor speech quality in a cell.
GUI Value Range: 1~16
Unit: 0.5s
Actual Value Range: 0.5~8
Default Value: 1
Vamos
QualRe
useStat
Times
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Duration for observing the receive quality
of a VAMOS call in the decision of channel
demultiplexing due to poor speech quality in a cell.
GUI Value Range: 1~16
Unit: 0.5s
Actual Value Range: 0.5~8
Default Value: 1
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140
GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
Vamos
RrmAlg
Ver
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
15830
VAMOS
Meaning:
VAMOS radio resource management algorithm
version
Phase_0: R015 basic algorithm
Phase_1: R016 optimized algorithm. This algorithm
has the following improvements:
1. VAMOS multiplexing can be performed during
VAMOS demultiplexing due to bad quality.
2. VAMOS demultiplexing due to light load is
performed preferentially on a VAMOS call with bad
quality and large path loss.
GUI Value Range: Phase_0(Phase_0),
Phase_1(Phase_1)
Unit: None
Actual Value Range: Phase_0, Phase_1
Default Value: Phase_1(Phase_1)
Vamos
RrmAlg
Ver
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
15830
VAMOS
Meaning:
VAMOS radio resource management algorithm
version
Phase_0: R015 basic algorithm
Phase_1: R016 optimized algorithm. This algorithm
has the following improvements:
1. VAMOS multiplexing can be performed during
VAMOS demultiplexing due to bad quality.
2. VAMOS demultiplexing due to light load is
performed preferentially on a VAMOS call with bad
quality and large path loss.
GUI Value Range: Phase_0(Phase_0),
Phase_1(Phase_1)
Unit: None
Actual Value Range: Phase_0, Phase_1
Default Value: Phase_1(Phase_1)
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141
GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
PWRB
CDALL
OWD
BSC690
0
SET
GCELL
PWRB
ASIC
GBFD-1
17602
Active
Power
Control
Meaning: Whether to allow active power control. If
this parameter is set to YES, the system performs
power forecast in the process of initial access
assignment or service channel activation during intraBSC handovers, and sends the forecast initial power
information to the BTSs through channel activation
messages. In this way, the MSs and BTSs can adjust
the transmit power. If this parameter is set to NO, the
system does not perform power forecast, and the MSs
and BTSs choose the maximum transmit power.
GUI Value Range: NO(No), YES(Yes)
Unit: None
Actual Value Range: NO, YES
Default Value: NO(No)
PWRB
CDALL
OWD
BSC691
0
SET
GCELL
PWRB
ASIC
GBFD-1
17602
Active
Power
Control
Meaning: Whether to allow active power control. If
this parameter is set to YES, the system performs
power forecast in the process of initial access
assignment or service channel activation during intraBSC handovers, and sends the forecast initial power
information to the BTSs through channel activation
messages. In this way, the MSs and BTSs can adjust
the transmit power. If this parameter is set to NO, the
system does not perform power forecast, and the MSs
and BTSs choose the maximum transmit power.
GUI Value Range: NO(No), YES(Yes)
Unit: None
Actual Value Range: NO, YES
Default Value: NO(No)
VAMO
SInitPC
ULSigT
hr
BSC690
0
SET
GCELL
VAMO
SPWR
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Expected strength of signals received by a
BTS from an MS when the active power control
algorithm in the VAMOS feature is enabled. This
parameter is used to calculate the initial MS transmit
power for a VAMOS call.
GUI Value Range: 0~63
Unit: dB
Actual Value Range: 0~63
Default Value: 43
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142
GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
VAMO
SInitPC
ULSigT
hr
BSC691
0
SET
GCELL
VAMO
SPWR
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Expected strength of signals received by a
BTS from an MS when the active power control
algorithm in the VAMOS feature is enabled. This
parameter is used to calculate the initial MS transmit
power for a VAMOS call.
GUI Value Range: 0~63
Unit: dB
Actual Value Range: 0~63
Default Value: 43
EXPUL
RXLEV
BSC690
0
SET
GCELL
PWRB
ASIC
GBFD-1
17602
Active
Power
Control
Meaning: Received signal strength at the BTS
expected in power forecast, which helps to compute
the initial transmit power of an MS.
GUI Value Range: 0~63
Unit: dB
Actual Value Range: 0~63
Default Value: 30
EXPUL
RXLEV
BSC691
0
SET
GCELL
PWRB
ASIC
GBFD-1
17602
Active
Power
Control
Meaning: Received signal strength at the BTS
expected in power forecast, which helps to compute
the initial transmit power of an MS.
GUI Value Range: 0~63
Unit: dB
Actual Value Range: 0~63
Default Value: 30
VAMO
SInitPC
DLSigT
hr
BSC690
0
SET
GCELL
VAMO
SPWR
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Expected strength of signals received by an
MS from a BTS when the active power control
algorithm in the VAMOS feature is enabled. This
parameter is used to calculate the initial BTS transmit
power for a VAMOS call.
GUI Value Range: 0~63
Unit: dB
Actual Value Range: 0~63
Default Value: 48
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143
GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
VAMO
SInitPC
DLSigT
hr
BSC691
0
SET
GCELL
VAMO
SPWR
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Expected strength of signals received by an
MS from a BTS when the active power control
algorithm in the VAMOS feature is enabled. This
parameter is used to calculate the initial BTS transmit
power for a VAMOS call.
GUI Value Range: 0~63
Unit: dB
Actual Value Range: 0~63
Default Value: 48
EXPDL
RXLEV
BSC690
0
SET
GCELL
PWRB
ASIC
GBFD-1
17602
Active
Power
Control
Meaning: Received signal strength at an MS expected
in power forecast, which helps to compute the initial
transmit power of the BTS.
GUI Value Range: 0~63
Unit: dB
Actual Value Range: 0~63
Default Value: 30
EXPDL
RXLEV
BSC691
0
SET
GCELL
PWRB
ASIC
GBFD-1
17602
Active
Power
Control
Meaning: Received signal strength at an MS expected
in power forecast, which helps to compute the initial
transmit power of the BTS.
GUI Value Range: 0~63
Unit: dB
Actual Value Range: 0~63
Default Value: 30
ULREX
LEVHI
GHTH
RED
BSC690
0
SET
GCELL
PWR3
GBFD-1
17601
HUAW
EI III
Power
Control
Algorith
m
Meaning: When the uplink receive level reaches the
threshold, Huawei III power control is performed.
GUI Value Range: 0~63
Unit: dB
Actual Value Range: 0~63
Default Value: 20
ULREX
LEVHI
GHTH
RED
BSC691
0
SET
GCELL
PWR3
GBFD-1
17601
HUAW
EI III
Power
Control
Algorith
m
Meaning: When the uplink receive level reaches the
threshold, Huawei III power control is performed.
GUI Value Range: 0~63
Unit: dB
Actual Value Range: 0~63
Default Value: 20
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
ULREX
LEVLO
WTHR
ED
BSC690
0
SET
GCELL
PWR3
GBFD-1
17601
HUAW
EI III
Power
Control
Algorith
m
Meaning: When the uplink receive level is lower than
the threshold, Huawei III power control is performed.
GUI Value Range: 0~63
Unit: dB
Actual Value Range: 0~63
Default Value: 20
ULREX
LEVLO
WTHR
ED
BSC691
0
SET
GCELL
PWR3
GBFD-1
17601
HUAW
EI III
Power
Control
Algorith
m
Meaning: When the uplink receive level is lower than
the threshold, Huawei III power control is performed.
GUI Value Range: 0~63
Unit: dB
Actual Value Range: 0~63
Default Value: 20
DLREX
LEVHI
GHTH
RED
BSC690
0
SET
GCELL
PWR3
GBFD-1
17601
HUAW
EI III
Power
Control
Algorith
m
Meaning: Upper receive level threshold for downlink
power control. If the downlink receive level is greater
than this threshold, the power of the downlink signal
needs to be decreased.
GUI Value Range: 0~63
Unit: dB
Actual Value Range: 0~63
Default Value: 24
DLREX
LEVHI
GHTH
RED
BSC691
0
SET
GCELL
PWR3
GBFD-1
17601
HUAW
EI III
Power
Control
Algorith
m
Meaning: Upper receive level threshold for downlink
power control. If the downlink receive level is greater
than this threshold, the power of the downlink signal
needs to be decreased.
GUI Value Range: 0~63
Unit: dB
Actual Value Range: 0~63
Default Value: 24
DLREX
LEVLO
WTHR
ED
BSC690
0
SET
GCELL
PWR3
GBFD-1
17601
HUAW
EI III
Power
Control
Algorith
m
Meaning: Lower receive level threshold for downlink
power control. If the downlink receive level is smaller
than this threshold, the power of the uplink signal
needs to be increased.
GUI Value Range: 0~63
Unit: dB
Actual Value Range: 0~63
Default Value: 24
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
DLREX
LEVLO
WTHR
ED
BSC691
0
SET
GCELL
PWR3
GBFD-1
17601
HUAW
EI III
Power
Control
Algorith
m
Meaning: Lower receive level threshold for downlink
power control. If the downlink receive level is smaller
than this threshold, the power of the uplink signal
needs to be increased.
GUI Value Range: 0~63
Unit: dB
Actual Value Range: 0~63
Default Value: 24
SicDiff
HighTh
d
BSC690
0
SET
GCELL
VAMO
SPWR
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Upper threshold of the SIC offset in the SIC
power control algorithm. The parameter setting affects
the speed of adjusting the MS power.
GUI Value Range: 0~63
Unit: dB
Actual Value Range: 0~63
Default Value: 15
SicDiff
HighTh
d
BSC691
0
SET
GCELL
VAMO
SPWR
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Upper threshold of the SIC offset in the SIC
power control algorithm. The parameter setting affects
the speed of adjusting the MS power.
GUI Value Range: 0~63
Unit: dB
Actual Value Range: 0~63
Default Value: 15
PwrBC
DOptim
izeSwitc
h
BSC690
0
SET
GCELL
PWRB
ASIC
GBFD-1
17602
Active
Power
Control
Meaning: Whether to optimize the active power
control algorithm. If this parameter is set to ON,
active power control is separately performed during
assignment and handover procedures based on the
values of "PwrBCDAssOffset" and
"PwrBCDHoOffset".
GUI Value Range: OFF(Off), ON(On)
Unit: None
Actual Value Range: OFF, ON
Default Value: OFF(Off)
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
PwrBC
DOptim
izeSwitc
h
BSC691
0
SET
GCELL
PWRB
ASIC
GBFD-1
17602
Active
Power
Control
Meaning: Whether to optimize the active power
control algorithm. If this parameter is set to ON,
active power control is separately performed during
assignment and handover procedures based on the
values of "PwrBCDAssOffset" and
"PwrBCDHoOffset".
GUI Value Range: OFF(Off), ON(On)
Unit: None
Actual Value Range: OFF, ON
Default Value: OFF(Off)
HIGHP
RIUSE
RQUA
LFIRS
T
BSC690
0
SET
GCELL
CHMG
BASIC
GBFD-1
11005
Enhance
d
Channel
Assignm
ent
Algorith
m
Meaning:
Whether to enable the priority-based channel
assignment algorithm.
If this parameter is set to YES, the BSC preferentially
allocates TCHFs to high-priority MSs to ensure
service quality. Otherwise, the BSC performs loadbased decisions to preferentially allocates TCHFs or
TCHHs to high-priority MSs.
GUI Value Range: NO(No), YES(Yes)
Unit: None
Actual Value Range: NO, YES
Default Value: NO(No)
HIGHP
RIUSE
RQUA
LFIRS
T
BSC691
0
SET
GCELL
CHMG
BASIC
GBFD-1
11005
Enhance
d
Channel
Assignm
ent
Algorith
m
Meaning:
Whether to enable the priority-based channel
assignment algorithm.
If this parameter is set to YES, the BSC preferentially
allocates TCHFs to high-priority MSs to ensure
service quality. Otherwise, the BSC performs loadbased decisions to preferentially allocates TCHFs or
TCHHs to high-priority MSs.
GUI Value Range: NO(No), YES(Yes)
Unit: None
Actual Value Range: NO, YES
Default Value: NO(No)
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147
GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
HIGHE
STPRI
ORITQ
UALFI
RST
BSC690
0
SET
GCELL
CHMG
BASIC
GBFD-1
11005
Enhance
d
Channel
Assignm
ent
Algorith
m
Meaning: Full rate TCHs are assigned preferentially to
the MSs with priority levels equal to or less than this
threshold, except when the MSs request only half or
full rate TCHs.
GUI Value Range: 1~14
Unit: None
Actual Value Range: 1~14
Default Value: 1
HIGHE
STPRI
ORITQ
UALFI
RST
BSC691
0
SET
GCELL
CHMG
BASIC
GBFD-1
11005
Enhance
d
Channel
Assignm
ent
Algorith
m
Meaning: Full rate TCHs are assigned preferentially to
the MSs with priority levels equal to or less than this
threshold, except when the MSs request only half or
full rate TCHs.
GUI Value Range: 1~14
Unit: None
Actual Value Range: 1~14
Default Value: 1
VAMO
SAHSU
serDLS
oftBloc
kThd
BSC690
0
SET
GCELL
CHMG
AD
GBFD-1
17002
GBFD-1
15830
IBCA
(Interfer
ence
Based
Channel
Allocati
on)
Meaning: Threshold for performing soft block on
VAMOS AMRHR users in a cell. If the CIR of a
VAMOS AMRHR user is smaller than the value of
this parameter, the BSC refuses to allocate any
TCHHs to this user. If the CIR of the VAMOS
AMRHR user is greater than the value of this
parameter, the BSC allocates a TCHH to this user.
VAMOS
GUI Value Range: -63~63
Unit: dB
Actual Value Range: -63~63
Default Value: 6
VAMO
SAHSU
serDLS
oftBloc
kThd
BSC691
0
SET
GCELL
CHMG
AD
GBFD-1
17002
GBFD-1
15830
IBCA
(Interfer
ence
Based
Channel
Allocati
on)
Meaning: Threshold for performing soft block on
VAMOS AMRHR users in a cell. If the CIR of a
VAMOS AMRHR user is smaller than the value of
this parameter, the BSC refuses to allocate any
TCHHs to this user. If the CIR of the VAMOS
AMRHR user is greater than the value of this
parameter, the BSC allocates a TCHH to this user.
VAMOS
GUI Value Range: -63~63
Unit: dB
Actual Value Range: -63~63
Default Value: 6
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
Vamos
MainTs
c
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Primary Training Sequence Code (TSC)
used in the network when the VAMOS function is
enabled in a cell. Before all calls enter the VAMOS
mode, the primary TSC is assigned preferentially;
after a pair of VAMOS calls are multiplexed, the TSC
that is not used by the call that accesses the timeslot
first is assigned to the other call.
GUI Value Range: 0~7
Unit: None
Actual Value Range: 0~7
Default Value: 0
Vamos
MainTs
c
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15830
VAMOS
Meaning: Primary Training Sequence Code (TSC)
used in the network when the VAMOS function is
enabled in a cell. Before all calls enter the VAMOS
mode, the primary TSC is assigned preferentially;
after a pair of VAMOS calls are multiplexed, the TSC
that is not used by the call that accesses the timeslot
first is assigned to the other call.
GUI Value Range: 0~7
Unit: None
Actual Value Range: 0~7
Default Value: 0
SpeMsI
deMute
xOpt
BSC690
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15831
Mute
SAIC
MS
Identific
ation
Meaning: Whether to optimize mutual exclusiveness
of features for MSs during automatic identification.
When this parameter is set to ON and automatic
identification is performed on full-rate calls, automatic
identification can be used with the Discontinuous
Transmission (DTX)-Downlink, TFO, and TrFO
features and the local switching function.
VAMOS
GUI Value Range: OFF(Off), ON(On)
VAMOS
Call
Drop
Solution
Unit: None
GBFD-1
15830
GBFD-1
15832
Issue 03 (2015-09-07)
Actual Value Range: OFF, ON
Default Value: ON(On)
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GSM BSS
VAMOS Feature Parameter Description
7 Parameters
Parame
ter ID
NE
MML
Comma
nd
Feature
ID
Feature
Name
Description
SpeMsI
deMute
xOpt
BSC691
0
SET
GCELL
VAMO
S
GBFD-1
60201
VAMOS
FR
GBFD-1
15831
Mute
SAIC
MS
Identific
ation
Meaning: Whether to optimize mutual exclusiveness
of features for MSs during automatic identification.
When this parameter is set to ON and automatic
identification is performed on full-rate calls, automatic
identification can be used with the Discontinuous
Transmission (DTX)-Downlink, TFO, and TrFO
features and the local switching function.
VAMOS
GUI Value Range: OFF(Off), ON(On)
VAMOS
Call
Drop
Solution
Unit: None
IBCA
(Interfer
ence
Based
Channel
Allocati
on)
Meaning: Soft block threshold of a VAMOS
AMRFR/EFR call. If the CIR of a VAMOS
AMRFR/EFR call is less than this parameter after a
channel is allocated, this channel is blocked and not
allowed to allocate.
GBFD-1
15830
GBFD-1
15832
VAMO
SAFSUs
erDLSo
ftBlock
Thd
BSC690
0
SET
GCELL
CHMG
AD
GBFD-1
17002
Actual Value Range: OFF, ON
Default Value: ON(On)
GUI Value Range: -63~63
Unit: dB
Actual Value Range: -63~63
Default Value: 9
VAMO
SAFSUs
erDLSo
ftBlock
Thd
BSC691
0
SET
GCELL
CHMG
AD
GBFD-1
17002
IBCA
(Interfer
ence
Based
Channel
Allocati
on)
Meaning: Soft block threshold of a VAMOS
AMRFR/EFR call. If the CIR of a VAMOS
AMRFR/EFR call is less than this parameter after a
channel is allocated, this channel is blocked and not
allowed to allocate.
GUI Value Range: -63~63
Unit: dB
Actual Value Range: -63~63
Default Value: 9
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GSM BSS
VAMOS Feature Parameter Description
8 Counters
8
Counters
Table 8-1 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282435978
CELL.CHAN.B
USY.NUM.VA
MOS.TCHF.TR
AF
R3550N3:Num
ber of Busy
VAMOS FR
Channels
BSC6900
GBFD-160201
VAMOS FR
1282435980
CELL.OVERL
AY.CHAN.BUS
Y.NUM.VAMO
S.TCHF.TRAF
R3550N6:Num
ber of Busy
VAMOS FR
Channels in the
Overlaid
Subcell
BSC6900
GBFD-160201
VAMOS FR
1282449198
CELL.CHAN.B
USY.NUM.VA
MOS.TCHH.T
RAF.AVE
R3501:Mean
Number of
Busy Channels
(VAMOS
TCHH)
BSC6900
GBFD-115830
VAMOS
1282449349
CELL.CHAN.B
USY.NUM.VA
MOS.TCHH.T
RAF.AVE.OLC
ELL
A313A5:Mean
Number of
Busy Channels
in Overlaid
Subcell
(VAMOS
TCHH)
BSC6900
GBFD-115830
VAMOS
1282452417
CELL.CHAN.B
USY.NUM.VA
MOS.TCHF.TR
AF.AVG
R3550N2:Avera
ge Number of
Busy VAMOS
FR Channels
BSC6900
GBFD-160201
VAMOS FR
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GSM BSS
VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282452418
CELL.OVERL
AY.CHAN.BUS
Y.NUM.VAMO
S.TCHF.TRAF.
AVG
R3550N5:Avera
ge Number of
Busy VAMOS
FR Channels in
the Overlaid
Subcell
BSC6900
GBFD-160201
VAMOS FR
1282435978
CELL.CHAN.B
USY.NUM.VA
MOS.TCHF.TR
AF
R3550N3:Num
ber of Busy
VAMOS FR
Channels
BSC6910
GBFD-160201
VAMOS FR
1282435980
CELL.OVERL
AY.CHAN.BUS
Y.NUM.VAMO
S.TCHF.TRAF
R3550N6:Num
ber of Busy
VAMOS FR
Channels in the
Overlaid
Subcell
BSC6910
GBFD-160201
VAMOS FR
1282449198
CELL.CHAN.B
USY.NUM.VA
MOS.TCHH.T
RAF.AVE
R3501:Mean
Number of
Busy Channels
(VAMOS
TCHH)
BSC6910
GBFD-115830
VAMOS
1282449349
CELL.CHAN.B
USY.NUM.VA
MOS.TCHH.T
RAF.AVE.OLC
ELL
A313A5:Mean
Number of
Busy Channels
in Overlaid
Subcell
(VAMOS
TCHH)
BSC6910
GBFD-115830
VAMOS
1282452417
CELL.CHAN.B
USY.NUM.VA
MOS.TCHF.TR
AF.AVG
R3550N2:Avera
ge Number of
Busy VAMOS
FR Channels
BSC6910
GBFD-160201
VAMOS FR
1282452418
CELL.OVERL
AY.CHAN.BUS
Y.NUM.VAMO
S.TCHF.TRAF.
AVG
R3550N5:Avera
ge Number of
Busy VAMOS
FR Channels in
the Overlaid
Subcell
BSC6910
GBFD-160201
VAMOS FR
1282431257
CELL.CH.BUS
Y.MAX.NUM.
VAMOS.TCHH
R3563:Maximu
m Number of
Busy Channels
(VAMOS
TCHH)
BSC6900
GBFD-115830
VAMOS
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GSM BSS
VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282432183
CELL.CH.BUS
Y.MAX.NUM.
VAMOS.TCHH
.OLCELL
R3564:Maximu
m Number of
Busy Channels
in Overlaid
Subcell
(VAMOS
TCHH)
BSC6900
GBFD-115830
VAMOS
1282435973
CELL.CH.BUS
Y.MAX.NUM.
VAMOS.TCHF
R3565:Maximu
m Number of
Busy VAMOS
FR Channels
BSC6900
GBFD-160201
VAMOS FR
1282436096
CELL.OVERL
AY.CH.BUSY.
MAX.NUM.VA
MOS.TCHF
R3550N4:Maxi
mum Number
of Busy
VAMOS FR
Channels in the
Overlaid
Subcell
BSC6900
GBFD-160201
VAMOS FR
1282431257
CELL.CH.BUS
Y.MAX.NUM.
VAMOS.TCHH
R3563:Maximu
m Number of
Busy Channels
(VAMOS
TCHH)
BSC6910
GBFD-115830
VAMOS
1282432183
CELL.CH.BUS
Y.MAX.NUM.
VAMOS.TCHH
.OLCELL
R3564:Maximu
m Number of
Busy Channels
in Overlaid
Subcell
(VAMOS
TCHH)
BSC6910
GBFD-115830
VAMOS
1282435973
CELL.CH.BUS
Y.MAX.NUM.
VAMOS.TCHF
R3565:Maximu
m Number of
Busy VAMOS
FR Channels
BSC6910
GBFD-160201
VAMOS FR
1282436096
CELL.OVERL
AY.CH.BUSY.
MAX.NUM.VA
MOS.TCHF
R3550N4:Maxi
mum Number
of Busy
VAMOS FR
Channels in the
Overlaid
Subcell
BSC6910
GBFD-160201
VAMOS FR
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GSM BSS
VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282431253
CELL.VAMOS.
MR.NUM.WH
EN.MAX.UP.P
WR
S4464:Number
of MRs with
Maximum
Uplink Power
of VAMOS Call
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
UP.MR.NUM
S4465:Number
of Uplink MRs
of VAMOS Call
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
UL.SIG.STREN
GTH
S4466:Uplink
Signal Strength
of VAMOS Call
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
UL.SIG.STREN
GTH.AVR
S4467:Mean
Uplink Signal
Strength of
VAMOS Call
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
MR.NUM.WH
EN.MAX.DOW
N.PWR
S4468:Number
of MRs with
Maximum
Downlink
Power of
VAMOS Call
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
DOWN.MR.NU
M
S4469:Number
of Downlink
MRs of
VAMOS Call
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
DL.SIG.STREN
GTH
S4470:Downlin
k Signal
Strength of
VAMOS Call
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
1282434924
CELL.VAMOS.
CALL.DOWNL
INK.PWR.LEV
EL
S4472:Downlin
k Power Level
for VAMOS
Call
BSC6900
GBFD-115830
VAMOS
1282434925
CELL.VAMOS.
CALL.UPLINK
.PWR.LEVEL
S4473:Uplink
Power Level for
VAMOS Call
BSC6900
GBFD-115830
VAMOS
1282449199
CELL.VAMOS.
DL.SIG.STREN
GTH.AVR
S4471:Mean
Downlink
Signal Strength
of VAMOS Call
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
1282431254
1282431255
1282431256
1282431262
1282431263
1282431264
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GSM BSS
VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282431253
CELL.VAMOS.
MR.NUM.WH
EN.MAX.UP.P
WR
S4464:Number
of MRs with
Maximum
Uplink Power
of VAMOS Call
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
UP.MR.NUM
S4465:Number
of Uplink MRs
of VAMOS Call
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
UL.SIG.STREN
GTH
S4466:Uplink
Signal Strength
of VAMOS Call
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
UL.SIG.STREN
GTH.AVR
S4467:Mean
Uplink Signal
Strength of
VAMOS Call
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
MR.NUM.WH
EN.MAX.DOW
N.PWR
S4468:Number
of MRs with
Maximum
Downlink
Power of
VAMOS Call
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
DOWN.MR.NU
M
S4469:Number
of Downlink
MRs of
VAMOS Call
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
DL.SIG.STREN
GTH
S4470:Downlin
k Signal
Strength of
VAMOS Call
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
1282434924
CELL.VAMOS.
CALL.DOWNL
INK.PWR.LEV
EL
S4472:Downlin
k Power Level
for VAMOS
Call
BSC6910
GBFD-115830
VAMOS
1282434925
CELL.VAMOS.
CALL.UPLINK
.PWR.LEVEL
S4473:Uplink
Power Level for
VAMOS Call
BSC6910
GBFD-115830
VAMOS
1282449199
CELL.VAMOS.
DL.SIG.STREN
GTH.AVR
S4471:Mean
Downlink
Signal Strength
of VAMOS Call
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.TOTAL.
CALL.NUM
A03640:Numbe
r of Calls
BSC6900
GBFD-115830
VAMOS
1282431254
1282431255
1282431256
1282431262
1282431263
1282431264
1282431259
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GSM BSS
VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282431260
CELL.SPT.VA
MOS1.CALL.N
UM
A03641:Numbe
r of VAMOS-1
Calls
BSC6900
GBFD-115830
VAMOS
1282431261
CELL.SPT.VA
MOS2.CALL.N
UM
A03642:Numbe
r of VAMOS-2
Calls
BSC6900
GBFD-115830
VAMOS
1282431259
CELL.TOTAL.
CALL.NUM
A03640:Numbe
r of Calls
BSC6910
GBFD-115830
VAMOS
1282431260
CELL.SPT.VA
MOS1.CALL.N
UM
A03641:Numbe
r of VAMOS-1
Calls
BSC6910
GBFD-115830
VAMOS
1282431261
CELL.SPT.VA
MOS2.CALL.N
UM
A03642:Numbe
r of VAMOS-2
Calls
BSC6910
GBFD-115830
VAMOS
1282435957
TRX.VAMOS.
UP.RX.QLTY.
0.NUM
NCS415I:Numb
er of Times
Uplink RX
Quality of
VAMOS Calls
Being 0
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
TRX.VAMOS.
UP.RX.QLTY.
1.NUM
NCS415J:Numb
er of Times
Uplink RX
Quality of
VAMOS Calls
Being 1
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
TRX.VAMOS.
UP.RX.QLTY.
2.NUM
NCS415K:Num
ber of Times
Uplink RX
Quality of
VAMOS Calls
Being 2
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
TRX.VAMOS.
UP.RX.QLTY.
3.NUM
NCS415L:Num
ber of Times
Uplink RX
Quality of
VAMOS Calls
Being 3
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
1282435958
1282435959
1282435960
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GSM BSS
VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282435961
TRX.VAMOS.
UP.RX.QLTY.
4.NUM
NCS415M:Num
ber of Times
Uplink RX
Quality of
VAMOS Calls
Being 4
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
TRX.VAMOS.
UP.RX.QLTY.
5.NUM
NCS415N:Num
ber of Times
Uplink RX
Quality of
VAMOS Calls
Being 5
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
TRX.VAMOS.
UP.RX.QLTY.
6.NUM
NCS415O:Num
ber of Times
Uplink RX
Quality of
VAMOS Calls
Being 6
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
TRX.VAMOS.
UP.RX.QLTY.
7.NUM
NCS415P:Num
ber of Times
Uplink RX
Quality of
VAMOS Calls
Being 7
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
TRX.VAMOS.
DOWN.RX.QL
TY.0.NUM
NCS415Q:Num
ber of Times
Downlink RX
Quality of
VAMOS Calls
Being 0
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
TRX.VAMOS.
DOWN.RX.QL
TY.1.NUM
NCS415R:Num
ber of Times
Downlink RX
Quality of
VAMOS Calls
Being 1
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
TRX.VAMOS.
DOWN.RX.QL
TY.2.NUM
NCS415S:Num
ber of Times
Downlink RX
Quality of
VAMOS Calls
Being 2
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
1282435962
1282435963
1282435964
1282435965
1282435966
1282435967
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157
GSM BSS
VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282435968
TRX.VAMOS.
DOWN.RX.QL
TY.3.NUM
NCS415T:Num
ber of Times
Downlink RX
Quality of
VAMOS Calls
Being 3
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
TRX.VAMOS.
DOWN.RX.QL
TY.4.NUM
NCS415U:Num
ber of Times
Downlink RX
Quality of
VAMOS Calls
Being 4
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
TRX.VAMOS.
DOWN.RX.QL
TY.5.NUM
NCS415V:Num
ber of Times
Downlink RX
Quality of
VAMOS Calls
Being 5
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
TRX.VAMOS.
DOWN.RX.QL
TY.6.NUM
NCS415W:Nu
mber of Times
Downlink RX
Quality of
VAMOS Calls
Being 6
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
TRX.VAMOS.
DOWN.RX.QL
TY.7.NUM
NCS415X:Num
ber of Times
Downlink RX
Quality of
VAMOS Calls
Being 7
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
TRX.VAMOS.
UP.RX.QLTY.
0.NUM
NCS415I:Numb
er of Times
Uplink RX
Quality of
VAMOS Calls
Being 0
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
TRX.VAMOS.
UP.RX.QLTY.
1.NUM
NCS415J:Numb
er of Times
Uplink RX
Quality of
VAMOS Calls
Being 1
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
1282435969
1282435970
1282435971
1282435972
1282435957
1282435958
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158
GSM BSS
VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282435959
TRX.VAMOS.
UP.RX.QLTY.
2.NUM
NCS415K:Num
ber of Times
Uplink RX
Quality of
VAMOS Calls
Being 2
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
TRX.VAMOS.
UP.RX.QLTY.
3.NUM
NCS415L:Num
ber of Times
Uplink RX
Quality of
VAMOS Calls
Being 3
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
TRX.VAMOS.
UP.RX.QLTY.
4.NUM
NCS415M:Num
ber of Times
Uplink RX
Quality of
VAMOS Calls
Being 4
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
TRX.VAMOS.
UP.RX.QLTY.
5.NUM
NCS415N:Num
ber of Times
Uplink RX
Quality of
VAMOS Calls
Being 5
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
TRX.VAMOS.
UP.RX.QLTY.
6.NUM
NCS415O:Num
ber of Times
Uplink RX
Quality of
VAMOS Calls
Being 6
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
TRX.VAMOS.
UP.RX.QLTY.
7.NUM
NCS415P:Num
ber of Times
Uplink RX
Quality of
VAMOS Calls
Being 7
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
TRX.VAMOS.
DOWN.RX.QL
TY.0.NUM
NCS415Q:Num
ber of Times
Downlink RX
Quality of
VAMOS Calls
Being 0
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
1282435960
1282435961
1282435962
1282435963
1282435964
1282435965
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GSM BSS
VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282435966
TRX.VAMOS.
DOWN.RX.QL
TY.1.NUM
NCS415R:Num
ber of Times
Downlink RX
Quality of
VAMOS Calls
Being 1
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
TRX.VAMOS.
DOWN.RX.QL
TY.2.NUM
NCS415S:Num
ber of Times
Downlink RX
Quality of
VAMOS Calls
Being 2
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
TRX.VAMOS.
DOWN.RX.QL
TY.3.NUM
NCS415T:Num
ber of Times
Downlink RX
Quality of
VAMOS Calls
Being 3
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
TRX.VAMOS.
DOWN.RX.QL
TY.4.NUM
NCS415U:Num
ber of Times
Downlink RX
Quality of
VAMOS Calls
Being 4
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
TRX.VAMOS.
DOWN.RX.QL
TY.5.NUM
NCS415V:Num
ber of Times
Downlink RX
Quality of
VAMOS Calls
Being 5
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
TRX.VAMOS.
DOWN.RX.QL
TY.6.NUM
NCS415W:Nu
mber of Times
Downlink RX
Quality of
VAMOS Calls
Being 6
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
TRX.VAMOS.
DOWN.RX.QL
TY.7.NUM
NCS415X:Num
ber of Times
Downlink RX
Quality of
VAMOS Calls
Being 7
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
1282435967
1282435968
1282435969
1282435970
1282435971
1282435972
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GSM BSS
VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282431236
CELL.VAMOS.
ASS.ADJUD
A3100J:Numbe
r of Successful
VAMOS
Candidate Call
Decisions
(Assignment)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
ASS.TRY
A3100L:Numbe
r of VAMOS
Channel
Multiplexing
Attempts
(Assignment)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
ASS.CMD
A3100M:Numb
er of VAMOS
Channel
Multiplexing
Commands
(Assignment)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
ASS.FAIL
A3100N:Numb
er of Failed
VAMOS
Channel
Multiplexing
Attempts
(Assignment)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.ADJUD
H3050:Number
of Successful
VAMOS
Candidate Call
Decisions
(Intra-Cell
Handover)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.TRY
H3051:Number
of VAMOS
Channel
Multiplexing
Attempts (IntraCell Handover)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.CMD
H3052:Number
of VAMOS
Channel
Multiplexing
Commands
(Intra-Cell
Handover)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
1282431237
1282431238
1282431239
1282431240
1282431241
1282431242
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161
GSM BSS
VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282431243
CELL.VAMOS.
INTRACELL.H
O.FAIL
H3053:Number
of Failed
VAMOS
Channel
Multiplexing
Attempts (IntraCell Handover)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.TRY.UNDO
H3054:Number
of VAMOS Call
Handover
Attempts
(Demultiplexing
)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.CMD.UNDO
H3056:Number
of VAMOS Call
Handover
Commands
(Demultiplexing
)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.FAIL.UNDO
H3057:Number
of Failed
VAMOS Call
Handover
Attempts
(Demultiplexing
)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.TRY.OTHER
H3058:Number
of VAMOS Call
Handover
Attempts
(Others)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.CMD.OTHE
R
H3059:Number
of VAMOS Call
Handover
Commands
(Others)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.FAIL.OTHE
R
H3060:Number
of Failed
VAMOS Call
Handover
Attempts
(Others)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
1282431244
1282431245
1282431246
1282431247
1282431248
1282431249
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GSM BSS
VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282431250
CELL.VAMOS.
CALL.DROP.TI
MES.HO.UND
O
H3061:Number
of VAMOS Call
Drops
(Demultiplexing
Handover)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
CALL.DROP.TI
MES.HO.OTH
ER
H3062:Number
of VAMOS Call
Drops (Other
Handover)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
CALL.DROP.TI
MES
H3063:Number
of VAMOS Call
Drops (Stable
State)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
ASS.ADJUD.O
LCELL
A3100O:Numb
er of Successful
VAMOS
Candidate Call
Decisions in
Overlaid
Subcell
(Assignment)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
ASS.TRY.OLC
ELL
H3064:Number
of VAMOS
Channel
Multiplexing
Attempts in
Overlaid
Subcell
(Assignment)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
ASS.CMD.OLC
ELL
H3065:Number
of VAMOS
Channel
Multiplexing
Commands in
Overlaid
Subcell
(Assignment)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
1282431251
1282431252
1282432165
1282432166
1282432167
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GSM BSS
VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282432168
CELL.VAMOS.
ASS.FAIL.OLC
ELL
H3066:Number
of Failed
VAMOS
Channel
Multiplexing
Attempts in
Overlaid
Subcell
(Assignment)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.ADJUD.OLC
ELL
H3067:Number
of Successful
VAMOS
Candidate Call
Decisions in
Overlaid
Subcell (IntraCell Handover)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.TRY.OLCEL
L
H3068:Number
of Successful
VAMOS
Channel
Multiplexing
Attempts in
Overlaid
Subcell (IntraCell Handover)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.CMD.OLCE
LL
H3069:Number
of VAMOS
Channel
Multiplexing
Commands in
Overlaid
Subcell (IntraCell Handover)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.FAIL.OLCEL
L
H3070:Number
of Failed
VAMOS
Channel
Multiplexing
Attempts in
Overlaid
Subcell (IntraCell Handover)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
1282432169
1282432170
1282432171
1282432172
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GSM BSS
VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282432173
CELL.VAMOS.
INTRACELL.H
O.TRY.UNDO.
OLCELL
H3071:Number
of VAMOS Call
Handover
Attempts in
Overlaid
Subcell
(Demultiplexing
)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.CMD.UNDO
.OLCELL
H3072:Number
of VAMOS Call
Handover
Commands in
Overlaid
Subcell
(Demultiplexing
)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.FAIL.UNDO.
OLCELL
H3073:Number
of Failed
VAMOS Call
Handover
Attempts in
Overlaid
Subcell
(Demultiplexing
)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.TRY.OTHER.
OLCELL
H3074:Number
of VAMOS Call
Handover
Attempts in
Overlaid
Subcell (Others)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.CMD.OTHE
R.OLCELL
H3075:Number
of VAMOS Call
Handover
Commands in
Overlaid
Subcell (Others)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.FAIL.OTHE
R.OLCELL
H3076:Number
of Failed
VAMOS Call
Handover
Attempts in
Overlaid
Subcell (Others)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
1282432174
1282432175
1282432176
1282432177
1282432178
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GSM BSS
VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282432179
CELL.VAMOS.
CALL.DROP.TI
MES.HO.UND
O.OLCELL
H3077:Number
of VAMOS Call
Drops in
Overlaid
Subcell
(Demultiplexing
Handover)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
CALL.DROP.TI
MES.HO.OTH
ER.OLCELL
H3078:Number
of VAMOS Call
Drops in
Overlaid
Subcell (Other
Handover)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
CALL.DROP.TI
MES.OLCELL
H3079:Number
of VAMOS Call
Drops in
Overlaid
Subcell (Stable
State)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
MULTI.FAIL.R
ESTRICT.TRX.
SPECIFICAT
H3080:Number
of VAMOS
Channel
Multiplexing
Failures
(Restricted
TRX
Specifications)
BSC6900
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
1282435919
CELL.VAMOS.
FR.CANDIDAT
E.SUCC.ASS
H3083:Number
of Successful
VAMOS FR
Candidate Call
Decisions
(Assignment)
BSC6900
GBFD-160201
VAMOS FR
1282435923
CELL.VAMOS.
FR.CANDIDAT
E.SUCC.INTR
AHO
H3087:Number
of Successful
VAMOS FR
Candidate Call
Decisions
(Intra-Cell
Handover)
BSC6900
GBFD-160201
VAMOS FR
1282432180
1282432181
1282435916
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GSM BSS
VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282435924
CELL.VAMOS.
FR.MULTIPLE
X.ATTEMPT.I
NTRAHO
H3088:Number
of VAMOS FR
Channel
Multiplexing
Attempts (IntraCell Handover)
BSC6900
GBFD-160201
VAMOS FR
1282435925
CELL.VAMOS.
FR.MULTIPLE
X.CMD.INTRA
HO
H3089:Number
of VAMOS FR
Channel
Multiplexing
Commands
(Intra-Cell
Handover)
BSC6900
GBFD-160201
VAMOS FR
1282435926
CELL.VAMOS.
FR.MULTIPLE
X.FAIL.INTRA
HO
H3090:Number
of Failed
VAMOS FR
Channel
Multiplexing
Attempts (IntraCell Handover)
BSC6900
GBFD-160201
VAMOS FR
1282435927
CELL.VAMOS.
FR.HO.ATTEM
PT.DEMULT
H3091:Number
of VAMOS FR
Call Handover
Attempts
(Demultiplexing
)
BSC6900
GBFD-160201
VAMOS FR
1282435928
CELL.VAMOS.
FR.HO.CMD.D
EMULT
H3092:Number
of VAMOS FR
Call Handover
Commands
(Demultiplexing
)
BSC6900
GBFD-160201
VAMOS FR
1282435929
CELL.VAMOS.
FR.HO.FAIL.D
EMULT
H3093:Number
of Failed
VAMOS FR
Call Handover
Attempts
(Demultiplexing
)
BSC6900
GBFD-160201
VAMOS FR
1282435930
CELL.VAMOS.
FR.HO.ATTEM
PT.OTHERS
H3094:Number
of VAMOS FR
Call Handover
Attempts
(Others)
BSC6900
GBFD-160201
VAMOS FR
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GSM BSS
VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282435931
CELL.VAMOS.
FR.HO.CMD.O
THERS
H3095:Number
of VAMOS FR
Call Handover
Commands
(Others)
BSC6900
GBFD-160201
VAMOS FR
1282435932
CELL.VAMOS.
FR.HO.FAIL.O
THERS
H3096:Number
of Failed
VAMOS FR
Call Handover
Attempts
(Others)
BSC6900
GBFD-160201
VAMOS FR
1282435933
CELL.VAMOS.
FR.CALL.DRO
PS.DEMULIPL
EX.HO
H3097:Number
of VAMOS FR
Call Drops
(Demultiplexing
Handover)
BSC6900
GBFD-160201
VAMOS FR
1282435935
CELL.VAMOS.
FR.CALL.DRO
PS.OTHER.HO
H3099:Number
of VAMOS FR
Call Drops
(Other
Handovers)
BSC6900
GBFD-160201
VAMOS FR
1282435936
CELL.VAMOS.
FR.CALL.DRO
PS.STABLE.ST
ATUS
H3100:Number
of VAMOS FR
Call Drops
(Stable Status)
BSC6900
GBFD-160201
VAMOS FR
1282435937
CELL.VAMOS.
FR.OVERLAY.
CANDIDATE.S
UCC.ASS
H3101:Number
of Successful
VAMOS FR
Candidate Call
Decisions in the
Overlaid
Subcell
(Assignment)
BSC6900
GBFD-160201
VAMOS FR
1282435951
CELL.VAMOS.
FR.OVERLAY.
CALL.DROPS.
DEMULIPLEX
.HO
H3115:Number
of VAMOS FR
Call Drops in
the Overlaid
Subcell
(Demultiplexing
Handover)
BSC6900
GBFD-160201
VAMOS FR
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GSM BSS
VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282435953
CELL.VAMOS.
FR.OVERLAY.
CALL.DROPS.
OTHER.HO
H3117:Number
of VAMOS FR
Call Drops in
the Overlaid
Subcell (Other
Handovers)
BSC6900
GBFD-160201
VAMOS FR
1282435954
CELL.VAMOS.
FR.OVERLAY.
CALL.DROPS.
STABLE.STAT
US
H3118:Number
of VAMOS FR
Call Drops in
the Overlaid
Subcell (Stable
Status)
BSC6900
GBFD-160201
VAMOS FR
1282436277
CELL.VAMOS.
FR.OVERLAY.
MULTIPLEX.A
TTEMPT.ASS
H3102:Number
of VAMOS FR
Channel
Multiplexing
Attempts in the
Overlaid
Subcell
(Assignment)
BSC6900
GBFD-160201
VAMOS FR
1282436280
CELL.VAMOS.
FR.OVERLAY.
MULTIPLEX.C
MD.ASS
H3103:Number
of VAMOS FR
Channel
Multiplexing
Commands in
the Overlaid
Subcell
(Assignment)
BSC6900
GBFD-160201
VAMOS FR
1282436281
CELL.VAMOS.
FR.OVERLAY.
MULTIPLEX.F
AIL.ASS
H3104:Number
of Failed
VAMOS FR
Channel
Multiplexing
Attempts in the
Overlaid
Subcell
(Assignment)
BSC6900
GBFD-160201
VAMOS FR
1282436282
CELL.VAMOS.
FR.OVERLAY.
CANDIDATE.S
UCC.INTRAH
O
H3105:Number
of Successful
VAMOS FR
Candidate Call
Decisions in the
Overlaid
Subcell (IntraCell Handover)
BSC6900
GBFD-160201
VAMOS FR
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GSM BSS
VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282436283
CELL.VAMOS.
FR.OVERLAY.
MULTIPLEX.A
TTEMPT.INTR
AHO
H3106:Number
of VAMOS FR
Channel
Multiplexing
Attempts in the
Overlaid
Subcell (IntraCell Handover)
BSC6900
GBFD-160201
VAMOS FR
1282436284
CELL.VAMOS.
FR.OVERLAY.
MULTIPLEX.C
MD.INTRAHO
H3107:Number
of VAMOS FR
Channel
Multiplexing
Commands in
the Overlaid
Subcell (IntraCell Handover)
BSC6900
GBFD-160201
VAMOS FR
1282436285
CELL.VAMOS.
FR.OVERLAY.
MULTIPLEX.F
AIL.INTRAHO
H3108:Number
of Failed
VAMOS FR
Channel
Multiplexing
Attempts in the
Overlaid
Subcell (IntraCell Handover)
BSC6900
GBFD-160201
VAMOS FR
1282436286
CELL.VAMOS.
FR.OVERLAY.
HO.ATTEMPT.
DEMULT
H3109:Number
of VAMOS Call
Handover
Attempts in the
Overlaid
Subcell
(Demultiplexing
)
BSC6900
GBFD-160201
VAMOS FR
1282436287
CELL.VAMOS.
FR.OVERLAY.
HO.CMD.DEM
ULT
H3110:Number
of VAMOS FR
Call Handover
Commands in
the Overlaid
Subcell
(Demultiplexing
)
BSC6900
GBFD-160201
VAMOS FR
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GSM BSS
VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282436288
CELL.VAMOS.
FR.OVERLAY.
HO.FAIL.DEM
ULT
H3111:Number
of Failed
VAMOS FR
Call Handover
Attempts in the
Overlaid
Subcell
(Demultiplexing
)
BSC6900
GBFD-160201
VAMOS FR
1282436289
CELL.VAMOS.
FR.OVERLAY.
HO.ATTEMPT.
OTHERS
H3112:Number
of VAMOS FR
Call Handover
Attempts in the
Overlaid
Subcell (Others)
BSC6900
GBFD-160201
VAMOS FR
1282436290
CELL.VAMOS.
FR.OVERLAY.
HO.CMD.OTH
ERS
H3113:Number
of VAMOS FR
Call Handover
Commands in
the Overlaid
Subcell (Others)
BSC6900
GBFD-160201
VAMOS FR
1282436291
CELL.VAMOS.
FR.OVERLAY.
HO.FAIL.OTH
ERS
H3114:Number
of Failed
VAMOS FR
Call Handover
Attempts in the
Overlaid
Subcell (Others)
BSC6900
GBFD-160201
VAMOS FR
1282436293
CELL.VAMOS.
FR.MULTIPLE
X.ATTEMPT.A
SS
H3084:Number
of VAMOS FR
Channel
Multiplexing
Attempts
(Assignment)
BSC6900
GBFD-160201
VAMOS FR
1282436294
CELL.VAMOS.
FR.MULTIPLE
X.CMD.ASS
H3085:Number
of VAMOS FR
Channel
Multiplexing
Commands
(Assignment)
BSC6900
GBFD-160201
VAMOS FR
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GSM BSS
VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282436295
CELL.VAMOS.
FR.MULTIPLE
X.FAIL.ASS
H3086:Number
of Failed
VAMOS FR
Channel
Multiplexing
Attempts
(Assignment)
BSC6900
GBFD-160201
VAMOS FR
1282431236
CELL.VAMOS.
ASS.ADJUD
A3100J:Numbe
r of Successful
VAMOS
Candidate Call
Decisions
(Assignment)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
ASS.TRY
A3100L:Numbe
r of VAMOS
Channel
Multiplexing
Attempts
(Assignment)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
ASS.CMD
A3100M:Numb
er of VAMOS
Channel
Multiplexing
Commands
(Assignment)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
ASS.FAIL
A3100N:Numb
er of Failed
VAMOS
Channel
Multiplexing
Attempts
(Assignment)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.ADJUD
H3050:Number
of Successful
VAMOS
Candidate Call
Decisions
(Intra-Cell
Handover)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.TRY
H3051:Number
of VAMOS
Channel
Multiplexing
Attempts (IntraCell Handover)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
1282431237
1282431238
1282431239
1282431240
1282431241
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GSM BSS
VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282431242
CELL.VAMOS.
INTRACELL.H
O.CMD
H3052:Number
of VAMOS
Channel
Multiplexing
Commands
(Intra-Cell
Handover)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.FAIL
H3053:Number
of Failed
VAMOS
Channel
Multiplexing
Attempts (IntraCell Handover)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.TRY.UNDO
H3054:Number
of VAMOS Call
Handover
Attempts
(Demultiplexing
)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.CMD.UNDO
H3056:Number
of VAMOS Call
Handover
Commands
(Demultiplexing
)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.FAIL.UNDO
H3057:Number
of Failed
VAMOS Call
Handover
Attempts
(Demultiplexing
)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.TRY.OTHER
H3058:Number
of VAMOS Call
Handover
Attempts
(Others)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.CMD.OTHE
R
H3059:Number
of VAMOS Call
Handover
Commands
(Others)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
1282431243
1282431244
1282431245
1282431246
1282431247
1282431248
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GSM BSS
VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282431249
CELL.VAMOS.
INTRACELL.H
O.FAIL.OTHE
R
H3060:Number
of Failed
VAMOS Call
Handover
Attempts
(Others)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
CALL.DROP.TI
MES.HO.UND
O
H3061:Number
of VAMOS Call
Drops
(Demultiplexing
Handover)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
CALL.DROP.TI
MES.HO.OTH
ER
H3062:Number
of VAMOS Call
Drops (Other
Handover)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
CALL.DROP.TI
MES
H3063:Number
of VAMOS Call
Drops (Stable
State)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
ASS.ADJUD.O
LCELL
A3100O:Numb
er of Successful
VAMOS
Candidate Call
Decisions in
Overlaid
Subcell
(Assignment)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
ASS.TRY.OLC
ELL
H3064:Number
of VAMOS
Channel
Multiplexing
Attempts in
Overlaid
Subcell
(Assignment)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
ASS.CMD.OLC
ELL
H3065:Number
of VAMOS
Channel
Multiplexing
Commands in
Overlaid
Subcell
(Assignment)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
1282431250
1282431251
1282431252
1282432165
1282432166
1282432167
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GSM BSS
VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282432168
CELL.VAMOS.
ASS.FAIL.OLC
ELL
H3066:Number
of Failed
VAMOS
Channel
Multiplexing
Attempts in
Overlaid
Subcell
(Assignment)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.ADJUD.OLC
ELL
H3067:Number
of Successful
VAMOS
Candidate Call
Decisions in
Overlaid
Subcell (IntraCell Handover)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.TRY.OLCEL
L
H3068:Number
of Successful
VAMOS
Channel
Multiplexing
Attempts in
Overlaid
Subcell (IntraCell Handover)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.CMD.OLCE
LL
H3069:Number
of VAMOS
Channel
Multiplexing
Commands in
Overlaid
Subcell (IntraCell Handover)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.FAIL.OLCEL
L
H3070:Number
of Failed
VAMOS
Channel
Multiplexing
Attempts in
Overlaid
Subcell (IntraCell Handover)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
1282432169
1282432170
1282432171
1282432172
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VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282432173
CELL.VAMOS.
INTRACELL.H
O.TRY.UNDO.
OLCELL
H3071:Number
of VAMOS Call
Handover
Attempts in
Overlaid
Subcell
(Demultiplexing
)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.CMD.UNDO
.OLCELL
H3072:Number
of VAMOS Call
Handover
Commands in
Overlaid
Subcell
(Demultiplexing
)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.FAIL.UNDO.
OLCELL
H3073:Number
of Failed
VAMOS Call
Handover
Attempts in
Overlaid
Subcell
(Demultiplexing
)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.TRY.OTHER.
OLCELL
H3074:Number
of VAMOS Call
Handover
Attempts in
Overlaid
Subcell (Others)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.CMD.OTHE
R.OLCELL
H3075:Number
of VAMOS Call
Handover
Commands in
Overlaid
Subcell (Others)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
INTRACELL.H
O.FAIL.OTHE
R.OLCELL
H3076:Number
of Failed
VAMOS Call
Handover
Attempts in
Overlaid
Subcell (Others)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
1282432174
1282432175
1282432176
1282432177
1282432178
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GSM BSS
VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282432179
CELL.VAMOS.
CALL.DROP.TI
MES.HO.UND
O.OLCELL
H3077:Number
of VAMOS Call
Drops in
Overlaid
Subcell
(Demultiplexing
Handover)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
CALL.DROP.TI
MES.HO.OTH
ER.OLCELL
H3078:Number
of VAMOS Call
Drops in
Overlaid
Subcell (Other
Handover)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
CALL.DROP.TI
MES.OLCELL
H3079:Number
of VAMOS Call
Drops in
Overlaid
Subcell (Stable
State)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
CELL.VAMOS.
MULTI.FAIL.R
ESTRICT.TRX.
SPECIFICAT
H3080:Number
of VAMOS
Channel
Multiplexing
Failures
(Restricted
TRX
Specifications)
BSC6910
GBFD-115830
VAMOS
GBFD-160201
VAMOS FR
1282435919
CELL.VAMOS.
FR.CANDIDAT
E.SUCC.ASS
H3083:Number
of Successful
VAMOS FR
Candidate Call
Decisions
(Assignment)
BSC6910
GBFD-160201
VAMOS FR
1282435923
CELL.VAMOS.
FR.CANDIDAT
E.SUCC.INTR
AHO
H3087:Number
of Successful
VAMOS FR
Candidate Call
Decisions
(Intra-Cell
Handover)
BSC6910
GBFD-160201
VAMOS FR
1282432180
1282432181
1282435916
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VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282435924
CELL.VAMOS.
FR.MULTIPLE
X.ATTEMPT.I
NTRAHO
H3088:Number
of VAMOS FR
Channel
Multiplexing
Attempts (IntraCell Handover)
BSC6910
GBFD-160201
VAMOS FR
1282435925
CELL.VAMOS.
FR.MULTIPLE
X.CMD.INTRA
HO
H3089:Number
of VAMOS FR
Channel
Multiplexing
Commands
(Intra-Cell
Handover)
BSC6910
GBFD-160201
VAMOS FR
1282435926
CELL.VAMOS.
FR.MULTIPLE
X.FAIL.INTRA
HO
H3090:Number
of Failed
VAMOS FR
Channel
Multiplexing
Attempts (IntraCell Handover)
BSC6910
GBFD-160201
VAMOS FR
1282435927
CELL.VAMOS.
FR.HO.ATTEM
PT.DEMULT
H3091:Number
of VAMOS FR
Call Handover
Attempts
(Demultiplexing
)
BSC6910
GBFD-160201
VAMOS FR
1282435928
CELL.VAMOS.
FR.HO.CMD.D
EMULT
H3092:Number
of VAMOS FR
Call Handover
Commands
(Demultiplexing
)
BSC6910
GBFD-160201
VAMOS FR
1282435929
CELL.VAMOS.
FR.HO.FAIL.D
EMULT
H3093:Number
of Failed
VAMOS FR
Call Handover
Attempts
(Demultiplexing
)
BSC6910
GBFD-160201
VAMOS FR
1282435930
CELL.VAMOS.
FR.HO.ATTEM
PT.OTHERS
H3094:Number
of VAMOS FR
Call Handover
Attempts
(Others)
BSC6910
GBFD-160201
VAMOS FR
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VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282435931
CELL.VAMOS.
FR.HO.CMD.O
THERS
H3095:Number
of VAMOS FR
Call Handover
Commands
(Others)
BSC6910
GBFD-160201
VAMOS FR
1282435932
CELL.VAMOS.
FR.HO.FAIL.O
THERS
H3096:Number
of Failed
VAMOS FR
Call Handover
Attempts
(Others)
BSC6910
GBFD-160201
VAMOS FR
1282435933
CELL.VAMOS.
FR.CALL.DRO
PS.DEMULIPL
EX.HO
H3097:Number
of VAMOS FR
Call Drops
(Demultiplexing
Handover)
BSC6910
GBFD-160201
VAMOS FR
1282435935
CELL.VAMOS.
FR.CALL.DRO
PS.OTHER.HO
H3099:Number
of VAMOS FR
Call Drops
(Other
Handovers)
BSC6910
GBFD-160201
VAMOS FR
1282435936
CELL.VAMOS.
FR.CALL.DRO
PS.STABLE.ST
ATUS
H3100:Number
of VAMOS FR
Call Drops
(Stable Status)
BSC6910
GBFD-160201
VAMOS FR
1282435937
CELL.VAMOS.
FR.OVERLAY.
CANDIDATE.S
UCC.ASS
H3101:Number
of Successful
VAMOS FR
Candidate Call
Decisions in the
Overlaid
Subcell
(Assignment)
BSC6910
GBFD-160201
VAMOS FR
1282435951
CELL.VAMOS.
FR.OVERLAY.
CALL.DROPS.
DEMULIPLEX
.HO
H3115:Number
of VAMOS FR
Call Drops in
the Overlaid
Subcell
(Demultiplexing
Handover)
BSC6910
GBFD-160201
VAMOS FR
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VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282435953
CELL.VAMOS.
FR.OVERLAY.
CALL.DROPS.
OTHER.HO
H3117:Number
of VAMOS FR
Call Drops in
the Overlaid
Subcell (Other
Handovers)
BSC6910
GBFD-160201
VAMOS FR
1282435954
CELL.VAMOS.
FR.OVERLAY.
CALL.DROPS.
STABLE.STAT
US
H3118:Number
of VAMOS FR
Call Drops in
the Overlaid
Subcell (Stable
Status)
BSC6910
GBFD-160201
VAMOS FR
1282436277
CELL.VAMOS.
FR.OVERLAY.
MULTIPLEX.A
TTEMPT.ASS
H3102:Number
of VAMOS FR
Channel
Multiplexing
Attempts in the
Overlaid
Subcell
(Assignment)
BSC6910
GBFD-160201
VAMOS FR
1282436280
CELL.VAMOS.
FR.OVERLAY.
MULTIPLEX.C
MD.ASS
H3103:Number
of VAMOS FR
Channel
Multiplexing
Commands in
the Overlaid
Subcell
(Assignment)
BSC6910
GBFD-160201
VAMOS FR
1282436281
CELL.VAMOS.
FR.OVERLAY.
MULTIPLEX.F
AIL.ASS
H3104:Number
of Failed
VAMOS FR
Channel
Multiplexing
Attempts in the
Overlaid
Subcell
(Assignment)
BSC6910
GBFD-160201
VAMOS FR
1282436282
CELL.VAMOS.
FR.OVERLAY.
CANDIDATE.S
UCC.INTRAH
O
H3105:Number
of Successful
VAMOS FR
Candidate Call
Decisions in the
Overlaid
Subcell (IntraCell Handover)
BSC6910
GBFD-160201
VAMOS FR
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VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282436283
CELL.VAMOS.
FR.OVERLAY.
MULTIPLEX.A
TTEMPT.INTR
AHO
H3106:Number
of VAMOS FR
Channel
Multiplexing
Attempts in the
Overlaid
Subcell (IntraCell Handover)
BSC6910
GBFD-160201
VAMOS FR
1282436284
CELL.VAMOS.
FR.OVERLAY.
MULTIPLEX.C
MD.INTRAHO
H3107:Number
of VAMOS FR
Channel
Multiplexing
Commands in
the Overlaid
Subcell (IntraCell Handover)
BSC6910
GBFD-160201
VAMOS FR
1282436285
CELL.VAMOS.
FR.OVERLAY.
MULTIPLEX.F
AIL.INTRAHO
H3108:Number
of Failed
VAMOS FR
Channel
Multiplexing
Attempts in the
Overlaid
Subcell (IntraCell Handover)
BSC6910
GBFD-160201
VAMOS FR
1282436286
CELL.VAMOS.
FR.OVERLAY.
HO.ATTEMPT.
DEMULT
H3109:Number
of VAMOS Call
Handover
Attempts in the
Overlaid
Subcell
(Demultiplexing
)
BSC6910
GBFD-160201
VAMOS FR
1282436287
CELL.VAMOS.
FR.OVERLAY.
HO.CMD.DEM
ULT
H3110:Number
of VAMOS FR
Call Handover
Commands in
the Overlaid
Subcell
(Demultiplexing
)
BSC6910
GBFD-160201
VAMOS FR
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GSM BSS
VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282436288
CELL.VAMOS.
FR.OVERLAY.
HO.FAIL.DEM
ULT
H3111:Number
of Failed
VAMOS FR
Call Handover
Attempts in the
Overlaid
Subcell
(Demultiplexing
)
BSC6910
GBFD-160201
VAMOS FR
1282436289
CELL.VAMOS.
FR.OVERLAY.
HO.ATTEMPT.
OTHERS
H3112:Number
of VAMOS FR
Call Handover
Attempts in the
Overlaid
Subcell (Others)
BSC6910
GBFD-160201
VAMOS FR
1282436290
CELL.VAMOS.
FR.OVERLAY.
HO.CMD.OTH
ERS
H3113:Number
of VAMOS FR
Call Handover
Commands in
the Overlaid
Subcell (Others)
BSC6910
GBFD-160201
VAMOS FR
1282436291
CELL.VAMOS.
FR.OVERLAY.
HO.FAIL.OTH
ERS
H3114:Number
of Failed
VAMOS FR
Call Handover
Attempts in the
Overlaid
Subcell (Others)
BSC6910
GBFD-160201
VAMOS FR
1282436293
CELL.VAMOS.
FR.MULTIPLE
X.ATTEMPT.A
SS
H3084:Number
of VAMOS FR
Channel
Multiplexing
Attempts
(Assignment)
BSC6910
GBFD-160201
VAMOS FR
1282436294
CELL.VAMOS.
FR.MULTIPLE
X.CMD.ASS
H3085:Number
of VAMOS FR
Channel
Multiplexing
Commands
(Assignment)
BSC6910
GBFD-160201
VAMOS FR
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GSM BSS
VAMOS Feature Parameter Description
8 Counters
Counter ID
Counter
Name
Counter
Description
NE
Feature ID
Feature Name
1282436295
CELL.VAMOS.
FR.MULTIPLE
X.FAIL.ASS
H3086:Number
of Failed
VAMOS FR
Channel
Multiplexing
Attempts
(Assignment)
BSC6910
GBFD-160201
VAMOS FR
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VAMOS Feature Parameter Description
9 Glossary
9
Glossary
For the acronyms, abbreviations, terms, and definitions, see Glossary.
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GSM BSS
VAMOS Feature Parameter Description
10 Reference Documents
10
Reference Documents
1.
3GPP TS 24.008 V9.7.0
2.
Mute SAIC MS Identification Feature Parameter Description
3.
VAMOS Call Drop Solution Feature Parameter Description
4.
Power Control Feature Parameter Description
5.
Flex Abis Feature Parameter Description
6.
Ciphering Feature Parameter Description
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