HUAWEI BSC6000 Base Station Subsystem
V900R008
EGPRS
Issue
02
Date
2008-06-30
INTERNAL
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HUAWEI BSC6000 Base Station Subsystem
EGPRS
Contents
Contents
1 EGPRS..........................................................................................................................................1-1
1.1 Overview.........................................................................................................................................................1-2
1.2 Availability......................................................................................................................................................1-3
1.3 Impact..............................................................................................................................................................1-4
1.4 Technical Description.....................................................................................................................................1-4
1.4.1 8PSK Modulation Mode.........................................................................................................................1-5
1.4.2 EGPRS Transmit Power.........................................................................................................................1-6
1.4.3 MCS-1 to MCS-9 Coding Schemes.......................................................................................................1-6
1.4.4 Link Quality Control..............................................................................................................................1-8
1.4.5 Types of Preferred EGPRS Channels.....................................................................................................1-8
1.4.6 CCCH 11Bit EGPRS Access.................................................................................................................1-9
1.4.7 Assignment of Idle Timeslots................................................................................................................1-9
1.5 Capabilities....................................................................................................................................................1-10
1.6 Implementation..............................................................................................................................................1-11
1.6.1 Configuring EGPRS (with Built-in PCU)............................................................................................1-11
1.6.2 Configuring EGPRS (with External PCU)...........................................................................................1-14
1.7 Maintenance Information..............................................................................................................................1-17
1.8 References.....................................................................................................................................................1-27
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i
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EGPRS
Figures
Figures
Figure 1-1 I/Q relations for the modulation and demodulation in GSM and EDGE...........................................1-5
Figure 1-2 Rates of GPRS channels and those of EDGE channels......................................................................1-7
Figure 1-3 Configure Site Idle Timeslot dialog box..........................................................................................1-12
Figure 1-4 Set Other Parameter dialog box........................................................................................................1-13
Figure 1-5 Channel Attributes tab page.............................................................................................................1-14
Figure 1-6 Configure Site Idle Timeslot dialog box..........................................................................................1-15
Figure 1-7 Set Other Parameter dialog box........................................................................................................1-16
Figure 1-8 Channel Attributes tab page.............................................................................................................1-17
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HUAWEI BSC6000 Base Station Subsystem
EGPRS
Tables
Tables
Table 1-1 NEs Involved in EDGE........................................................................................................................1-3
Table 1-2 GBSS products and software versions.................................................................................................1-3
Table 1-3 Modulation bits and corresponding symbols.......................................................................................1-6
Table 1-4 Modulation and coding schemes in EDGE..........................................................................................1-7
Table 1-5 Coding schemes and number of required Abis links.........................................................................1-10
Table 1-6 Alarms related to the built-in PCU.....................................................................................................1-17
Table 1-7 Alarms related to the external PCU...................................................................................................1-18
Table 1-8 Counters related to the built-in PCU..................................................................................................1-18
Table 1-9 Counters related to the external PCU.................................................................................................1-25
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EGPRS
1 EGPRS
1
EGPRS
About This Chapter
1.1 Overview
This describes the EGPRS. The Enhanced Data Rate for GSM Evolution (EDGE) can provide
high-rate data services.
1.2 Availability
This lists the NEs, software versions, licenses, and other conditions required for the
implementation of EDGE.
1.3 Impact
This describes the impact of EGPRS on system performance.
1.4 Technical Description
This describes the technical aspects of EDGE. EDGE is an evolution stage of PS services. It can
be called as 2.75 G mobile communication technology. If the equipment on the current network
remains unchanged, EDGE can be implemented through the upgrade of relevant software. EDGE
can enhance the transmission rate of PS data.
1.5 Capabilities
This describes the EDGE capabilities of the built-in PCU and external PCU.
1.6 Implementation
EDGE implementation consists of configuring EDGE with the built-in PCU and configuring
EDGE with the external PCU.
1.7 Maintenance Information
This lists the alarms and counters related to EDGE.
1.8 References
The references indicate the documents about EDGE from the related standard organizations.
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EGPRS
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1.1 Overview
This describes the EGPRS. The Enhanced Data Rate for GSM Evolution (EDGE) can provide
high-rate data services.
Definition
EDGE consists of the Enhanced GPRS (EGPRS) and the Enhanced Circuit Switched Data
(ECSD).
l
EGPRS is the enhanced GPRS. EGPRS uses the 8PSK modulation mode so that the rate
of a single channel is improved. The maximum rate of a single channel is 59.2 kbit/s.
l
ECSD is the enhanced High Speed Circuit Switched Data (HSCSD).
NOTE
The Huawei BSS supports only EGPRS. Unless otherwise specified, EDGE referred to in this document
indicates EGPRS.
Purposes
Using the new modulation and coding schemes, EDGE greatly improves the data service rates.
The data transmission rates on the Um interface in EDGE are almost three times those in GSM.
This meets the requirements of high-rate data services.
Term
None.
Acronyms and Abbreviations
1-2
Acronym and
Abbreviation
Full Spelling
EDGE
Enhanced Data Rate for GSM Evolution
GPRS
General Packet Radio Service
PCIC
Packet Circuit Identity Code
BER
Bit Error Rate
BVC
BSSGP Virtual Connection
BSSGP
Base Station System GPRS Protocol
QoS
Quality of Service
TBF
Temporary Block Flow
CCCH
Common Control Channel
PCCCH
Packet Common Control Channel
PACCH
Packet Associated Control Channel
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Acronym and
Abbreviation
Full Spelling
RLC
Radio Link Control
1.2 Availability
This lists the NEs, software versions, licenses, and other conditions required for the
implementation of EDGE.
NEs Involved
Table 1-1 lists the network elements (NEs) involved in EDGE.
Table 1-1 NEs Involved in EDGE
MS
BTS
BSC
PCU
SGSN
GGSN
MSC
HLR
√
√
√
√
√
√
-
√
NOTE
l -: not involved
l √: involved
Software Versions
Table 1-2 lists the versions of GBSS products that support EDGE.
Table 1-2 GBSS products and software versions
Product
Version
BSC
BSC6000
V900R008C01 and later versions
BTS
BTS3X
G3BTS32V302R002C05 and later versions
BTS3012A
All versions
BTS3001C
All versions
BTS3002C
All versions
BTS3002E
BTS3000V100R002C01 and later versions
BTS3006C
BTS3000V100R002C01 and later versions
BTS3012
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DTRU
BTS3000V100R001C01 and later versions
QTRU
BTS3000V100R008C01 and later versions
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Product
Version
BTS3012
AE
DTRU
BTS3000V100R001C04 and later versions
QTRU
BTS3000V100R008C01 and later versions
BTS3900 GSM
BTS3000V100R008C02 and later versions
BTS3900A GSM
BTS3000V100R008C02 and later versions
DBS3900 GSM
BTS3000V100R008C01 and later versions
Miscellaneous
The EDGE Support can be configured only when the GPRS Support is configured.
1.3 Impact
This describes the impact of EGPRS on system performance.
Impact on System Performance
l
When the EDGE function is enabled, the maximum number of TRXs supported by one E1
cable in different network topologies decreases. Thus, the number of TRXs that each GMPS
or GEPS supports decreases.
NOTE
The number of idle timeslots and TRXs that each E1 cable can be configured with must meet the
following requirement: The number of configured TRXs + the number of configured idle timeslots/
8 ≤ the maximum number of configurable TRXs.
l
When the external PCU is used and the EDGE function is enabled, the capacity of each
RPPU in the PCU decreases. The number of PDCHs that can be activated on each RPPU
decreases from 120 to 100.
Impact on Other Features
None.
1.4 Technical Description
This describes the technical aspects of EDGE. EDGE is an evolution stage of PS services. It can
be called as 2.75 G mobile communication technology. If the equipment on the current network
remains unchanged, EDGE can be implemented through the upgrade of relevant software. EDGE
can enhance the transmission rate of PS data.
1.4.1 8PSK Modulation Mode
This describes the 8PSK modulation mode. In 8PSK modulation mode, symbols represent the
absolute phases of signals. There are eight possible symbols and each symbol represents three
bits of information.
1.4.2 EGPRS Transmit Power
1-4
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This describes the transmit power of a BTS that uses 8PSK modulation mode.
1.4.3 MCS-1 to MCS-9 Coding Schemes
This describes MCS-1 to MCS-9 modulation and coding schemes used in EDGE.
1.4.4 Link Quality Control
This describes the link quality control. The link quality control enables the system to adapt to
the radio transmission environment dynamically by changing modulation and coding schemes
during data transmission, thus improving the link quality.
1.4.5 Types of Preferred EGPRS Channels
This describes the types of preferred channels in EGPRS.
1.4.6 CCCH 11Bit EGPRS Access
EDGE supports 11Bit EGPRS access on the CCCH. EDGE reduces the access delay and
improves the access performance of the MS.
1.4.7 Assignment of Idle Timeslots
For packet data services, the Abis interface supports the mapping of several timeslots to one
traffic channel. Then, the timeslots are divided and combined on the TX and RX ends.
1.4.1 8PSK Modulation Mode
This describes the 8PSK modulation mode. In 8PSK modulation mode, symbols represent the
absolute phases of signals. There are eight possible symbols and each symbol represents three
bits of information.
The GSM system uses the Gaussian Minimum Shift Keying (GMSK) modulation mode. In
GMSK modulation mode, bit 0 or 1 indicates the change in signal phases. Each phase change
is represented by a symbol.
In 8PSK modulation mode, symbols represent the absolute phases of signals. There are eight
possible symbols and each symbol represents three bits of information. Therefore, the data rate
on the Um interface in EDGE can theoretically be three times that in GSM.
Figure 1-1 shows the I/Q relations for the modulation and demodulation in GSM and EDGE.
Figure 1-1 I/Q relations for the modulation and demodulation in GSM and EDGE
GPRS:
GMSK Modulation
GPRS:
8PSK Modulation
Q
Q
(0,1,0)
(0,1,1)
(0,0,0)
1
(0,0,0)
I
I
(1,1,1)
0
(1,1,0)
(1,0,1)
(1,0,0)
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NOTE
In terms of performance, the 8PSK modulation mode is better than the GMSK modulation mode. The
demodulation threshold of the 8PSK mode, however, is higher than the demodulation threshold of the
GMSK mode. The modulation mode is radio environment specific. The PCU automatically adjusts the
modulation mode based on the BER report from an MS. Therefore, the modulation and demodulation mode
that EDGE uses can be 8PSK or GMSK.
Table 1-3 lists the modulation bits and corresponding symbols shown in Figure 1-1.
Table 1-3 Modulation bits and corresponding symbols
Modulation Bit
Symbol
(1,1,1)
0
(0,1,1)
1
(0,1,0)
2
(0,0,0)
3
(0,0,1)
4
(1,0,1)
5
(1,0,0)
6
(1,1,0)
7
NOTE
Table 1-3 lists all the modulation bits and corresponding symbols.
1.4.2 EGPRS Transmit Power
This describes the transmit power of a BTS that uses 8PSK modulation mode.
From the perspective of network operation, the transceiver of the BTS in EDGE must have the
same spectrum features as those of an ordinary transceiver. When sending the signals modulated
in 8PSK modulation mode, the transceiver of the BTS in EDGE uses the transmit power that is
2 dB–5 dB less than the average power in GMSK modulation mode. Thus, the requirements for
spectrum can be met. In the system, the parameter 8PSK Power Level can be specified to meet
the requirements. The default value of this parameter is 0.
On the BCCH, the transmit power of the signals modulated in 8PSK modulation mode is at most
4 dB less than the average transmit power of the signals modulated in GMSK modulation mode.
On the timeslot located before the timeslot of the BCCH/CCCH, the transmit power of the signals
modulated in 8PSK mode is at most 2 dB less than that of the signals modulated in GMSK
modulation mode.
1.4.3 MCS-1 to MCS-9 Coding Schemes
This describes MCS-1 to MCS-9 modulation and coding schemes used in EDGE.
EDGE uses MCS-1 to MCS-9 modulation and coding schemes, as listed in Table 1-4.
1-6
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Table 1-4 Modulation and coding schemes in EDGE
Coding Scheme
Modulation Mode
Number of Bits
in the Payload of
Each Burst
Rate (kbit/s)
MCS-9
8PSK
2 x 592
59.2
MCS-8
2 x 544
54.4
MCS-7
2 x 448
44.8
MCS-6
592
29.6
544 + 48
27.2
448
22.4
352
17.6
296
14.8
272 + 24
13.6
MCS-2
224
11.2
MCS-1
176
8.8
MCS-5
MCS-4
GMSK
MCS-3
NOTE
For 544 + 48 and 272 + 24 in the previous table, 544 and 272 indicate the significant bits, and 48 and 24
indicate the padding bits.
The initial coding schemes used in EDGE can be specified through the parameters Uplink
Default MCS Type and Downlink Default MCS Type. When the EDGE service is used,
whether the uplink/downlink is adjusted based on the signal transmission quality depends on the
setting of the parameters Uplink Fixed MCS Type and Downlink Fixed MCS Type.
Figure 1-2 shows the rates of GPRS channels and those of EDGE channels.
Figure 1-2 Rates of GPRS channels and those of EDGE channels
kbit/s
59.2
60.0
54.4
GPRS
50.0
44.8
EDGE
40.0
29.6
30.0
14.8
14.4
12.2
10.0
22.4
20.2
20.0
8.8
8.0
17.6
11.2
0.0
CS-1
CS-2
CS-3 CS-4
MCS-1 MCS-2 MCS-3 MCS-4 MCS-5 MCS-6 MCS-7 MCS-8 MCS-9
GMSK
modulation
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1.4.4 Link Quality Control
This describes the link quality control. The link quality control enables the system to adapt to
the radio transmission environment dynamically by changing modulation and coding schemes
during data transmission, thus improving the link quality.
EDGE uses a set of high-efficient link quality control algorithm. EDGE has two link quality
control modes: Link Adaptation (LA) and Incremental Redundancy (IR). The link quality control
mode is set through the parameter Link Quality Control Mode. For the cells where the signal
quality on the Um interface is good, this parameter is set to LA.
Basic Principle of LA
During data transmission, the sender retransmits the original data block or segments the original
data block into two data blocks and then transmits them. The receiver need not restore the
previous erroneous data blocks.
Basic Principle of IR
During data transmission, the sender does not consider the radio transmission environment at
first and uses a high data rate coding scheme for the data transmission. Although the data rate
is high, the capability of data protection is weak. If the data is received incorrectly, the sender
retransmits additional coding information. The receiver combines the new information with the
previous information and then performs decoding. The previous process is repeated until the
decoding succeeds.
l
During uplink data transmission, the system notifies an MS to use the IR mode by setting
RESEGMENT in the uplink resource assignment message to 0 (segmentation forbidden).
In IR mode, the receiver should have sufficient memory to save the history information. If
the network memory is insufficient, the system can notify the MS of the memory
insufficiency by setting RESEGMENT in the UPLINK ACK/NACK message to 1.
l
During downlink data transmission, if the memory of an MS is insufficient, the MS can
send MS OUT OF MEMORY to the network through a DOWNLINK ACK/NACK
message. Then, the network cannot use the IR mode in downlink data transmission.
1.4.5 Types of Preferred EGPRS Channels
This describes the types of preferred channels in EGPRS.
The preferred channel types are as follows:
l
EGPRS dedicated channel
EGPRS dedicated channels can be used by only EGPRS MSs.
l
EGPRS preferred channel
EGPRS preferred channels are preferentially used by EGPRS MSs. The EGPRS preferred
channels can be used by GPRS MSs when the channels are in the idle state. When an EGPRS
MS requests an EGPRS preferred channel, the GPRS MS that occupies the EGPRS
preferred channel should be transferred to other channels. The signals of an EGPRS MS
and those of a GPRS MS cannot be multiplexed onto one EGPRS preferred channel.
l
Normal EGPRS channel
Normal EGPRS channels can be used by GPRS MSs and EGPRS MSs.
l
1-8
GPRS channel
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GPRS channels are used by GPRS MSs. If a cell is not configured with EGPRS channels,
EGPRS MSs in the cell preferentially use GPRS channels to process GPRS services.
l
Non-GPRS channel
Non-GPRS channels are not used for packet services.
When configuring Channel Type on the TRX, you can select the channel type through GPRS
Channel Priority Type.
When the system allocates PDCHs, the preferred channel type varies according to packet data
services.
l
For the GPRS service, the GPRS channels are preferentially assigned. Then the normal
EGPRS channels are assigned and finally the EGPRS preferred channels are assigned.
l
For the EGPRS service, the EGPRS dedicated channels are preferentially assigned. Then
the EGPRS preferred channels are assigned and finally the normal EGPRS channels are
assigned.
On the normal EGPRS channel, the GPRS MS may use the uplink channel, and the EGPRS MS
may use the downlink channel. The parameter Allow E Down G Up Switch can be set to avoid
channel multiplexing. If you want to eliminate the possibility of EDGE/GPRS co-timeslot, do
not configure normal EGPRS channels.
NOTE
Channels should be selected according to the preferred channel type. For example, if the channels on the
TRX that supports EGPRS are configured as GPRS channels, these channels can be used for only GPRS
services. EGPRS dedicated channels can be configured only as static channels. Other three types of
preferred channels can be configured as static or dynamic channels.
1.4.6 CCCH 11Bit EGPRS Access
EDGE supports 11Bit EGPRS access on the CCCH. EDGE reduces the access delay and
improves the access performance of the MS.
The access process of the 11Bit EGPRS on the CCCH is as follows:
1.
The MS sends the 11bit EGPRS PAKCET CHANNEL REQUEST message on the CCCH
for one phase packet access.
2.
The network assigns the EDGE channel for the MS through the IMMEDIATE
ASSIGNMENT message. Therefore, the EGPRS TBF is established.
Whether to enable CCCH 11Bit EGPRS access depends on the setting of the parameter Support
11BIT EGPRS Access.
1.4.7 Assignment of Idle Timeslots
For packet data services, the Abis interface supports the mapping of several timeslots to one
traffic channel. Then, the timeslots are divided and combined on the TX and RX ends.
The data rate of each timeslot on the Abis interface is 16 kbit/s. In EDGE, the data rate can be
59.2 kbit/s. In GPRS, the CS-3/CS-4 coding scheme needs to be added with a subtimeslot. In
EDGE, each PDCH can be added with three subtimeslots. EDGE coding schemes are MCS1 to
MCS9. The number of Abis links required for different coding schemes is different, as described
in Table 1-5.
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Table 1-5 Coding schemes and number of required Abis links
Coding Scheme
Number of Required Abis Links
MCS-1–MCS-2
1
MCS-3–MCS-6
2
MCS-7
3
MCS-8–MCS-9
4
The number of idle timeslots on the Abis interface requested during EDGE coding scheme
adjustment is related to the coding scheme. As described in Table 1-5, when EDGE uses coding
schemes MCS-3-MCS-6, an idle timeslot on the Abis interface is required. The idle timeslots
on the Abis interface in the same BTS can be allocated to any PDCH on any TRX in the same
cabinet group. The idle timeslot on the Abis interface is set through the parameter Idle
Timeslots.
NOTE
l
When the Abis interface uses IP or HDLC transmission, there is no idle timeslot configuration.
l
When the Flex Abis feature of the BTS is enabled, if the CS traffic is light, idle timeslots may not be
configured and the EDGE service can still run normally.
l
When the Flex Abis feature of the BTS is enabled, if the CS traffic is heavy, idle timeslots should be
configured. Otherwise, the EDGE service may fail for a long time.
1.5 Capabilities
This describes the EDGE capabilities of the built-in PCU and external PCU.
Built-in PCU
The EDGE capabilities of the built-in PCU are as follows:
1-10
l
The system uses the resource pool redundancy configuration mode. The maximum
configuration that the system can support is 8 + 1 = 9 GDPUPs.
l
The maximum number of cells supported by each GDPUP is 1,024.
l
The maximum number of activated PDCHs supported by each GDPUP is 1,024. All the
channels support the MCS9 coding scheme.
l
The maximum number of configurable PDCHs is 15,360.
l
The maximum number of activated PDCHs in full configuration is 8,192. All the channels
support the MCS9 coding scheme.
l
The maximum throughput on the Gb interface is 512 Mbit/s.
l
The maximum number of uplink PDCHs that can be used by a single MS is 4.
l
The maximum number of downlink PDCHs that can be used by a single MS is 5.
l
The maximum number of pairs of configured GFGUGs/GEPUGs are 8.
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External PCU
The EDGE capabilities of the external PCU are as follows:
l
The BSC supports 256 E1 lines on the Pb interface.
l
Each GMPS/GEPS subrack supports 64 E1 lines on the Pb interface.
l
Each GEIUP/GOIUP supports 32 E1 lines on the Pb interface.
l
The GOIUP provides one STM-1 port, which carries 63 E1 links.
1.6 Implementation
EDGE implementation consists of configuring EDGE with the built-in PCU and configuring
EDGE with the external PCU.
1.6.1 Configuring EGPRS (with Built-in PCU)
This describes how to configure EDGE on the BSC6000 Local Maintenance Terminal.
1.6.2 Configuring EGPRS (with External PCU)
This describes how to configure EDGE on the BSC6000 Local Maintenance Terminal.
1.6.1 Configuring EGPRS (with Built-in PCU)
This describes how to configure EDGE on the BSC6000 Local Maintenance Terminal.
Prerequisite
l
The system is configured to support GPRS. For details about how to configure GPRS with
the built-in PCU, see Configuring GPRS (with External PCU).
l
The subrack-OSP mapping is configured. For details, refer to Configuring the SubrackOSP Mapping.
l
The license is applied and activated. To apply for and activate the license, do as follows:
1.
2.
In the BSC6000V900R008 Exceptional Commercial License Application Template,
fill in the following information.
–
Fill in the number of PDCHs to be purchased in the Number of resources column
corresponding to the Maximum Number of PDCH Groups Activated in the
Resource control items column.
–
Fill in the number of TRXs to be purchased in the Number of resources column
corresponding to the Number of the TRX Supporting EDGE in the Resource
control items column.
Activate the license on the Local Maintenance Terminal. For details, refer to
Activating the BSC License.
Procedure
Step 1 Configure site idle timeslot.
1.
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On the Management Tree tab page of the BSC6000 Local Maintenance Terminal, rightclick the target BTS, and then choose Configure Site Idle Timeslot from the shortcut
menu. A dialog box is displayed, as shown in Figure 1-3.
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Figure 1-3 Configure Site Idle Timeslot dialog box
2.
In the Idle Timeslot area, click the box under the Idle Timeslots area, and then enter the
number of idle timeslots to be configured.
3.
Click Finish to end the configuration.
NOTE
l
Idle Timeslots should be configured only when Trans Type of the BSC is set to TDM.
l
When the Flex Abis feature of the BTS is enabled, if the CS traffic is light, idle timeslots may not be
configured and the EDGE service can still run normally.
l
When the Flex Abis feature of the BTS is enabled, if the CS traffic is heavy, idle timeslots should be
configured. Otherwise, the EDGE service may fail for a long time.
Step 2 Configure the cell to support EDGE.
1-12
1.
On the BSC6000 Local Maintenance Terminal, right-click a cell on the Management
Tree tab page, and then choose Set Cell Attributes from the shortcut menu.
2.
In the displayed dialog box, double-click the target cell in the Cell view list box to add it
to the Selected cells list box. Then, click Next.
3.
In the Cells to be set list box, select the target cell, and then click Set Cell Attributes. A
dialog box is displayed, as shown in Figure 1-4.
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Figure 1-4 Set Other Parameter dialog box
4.
Select EDGE Support.
5.
Click OK to end the configuration.
Step 3 Configure the channel type.
1.
On the BSC6000 Local Maintenance Terminal, right-click a TRX on the Management
Tree tab page, and then choose Configure TRX Attributes from the shortcut menu.
2.
In the displayed dialog box, select the target TRX in the TRX view list box, and then click
Configure TRX Attributes.
3.
In the displayed dialog box, click the Channel Attributes tab, as shown in Figure 1-5.
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Figure 1-5 Channel Attributes tab page
4.
Select Channel Number, and then select the channel type that supports packet services
such as PDTCH or TCH Full Rate in the Channel Type drop-down list box. Then, set
GPRS Channel Priority Type.
5.
Click OK to end the configuration.
----End
1.6.2 Configuring EGPRS (with External PCU)
This describes how to configure EDGE on the BSC6000 Local Maintenance Terminal.
Prerequisite
l
The system is configured to support GPRS. For details about how to configure GPRS with
the external PCU, refer to Configuring GPRS (with External PCU).
l
The subrack-OSP mapping is configured. For details, refer to Configuring the SubrackOSP Mapping.
l
The license is applied and activated. To apply for and activate the license, do as follows:
1.
1-14
In the BSC6000V900R008 Exceptional Commercial License Application Template,
fill in the following information.
–
Fill in the number of PDCHs to be purchased in the Number of resources column
corresponding to the Maximum Number of PDCH Groups Activated in the
Resource control items column.
–
Fill in the number of TRXs to be purchased in the Number of resources column
corresponding to the Number of the TRX Supporting EDGE in the Resource
control items column.
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Activate the license on the Local Maintenance Terminal. For details, refer to
Activating the BSC License.
Procedure
Step 1 Configure Site Idle Timeslot dialog box
1.
On the Management Tree tab page of the BSC6000 Local Maintenance Terminal, rightclick the target BTS, and then choose Configure Site Idle Timeslot from the shortcut
menu. A dialog box is displayed, as shown in Figure 1-6.
Figure 1-6 Configure Site Idle Timeslot dialog box
2.
In the Idle Timeslot area, click the box under the Idle Timeslots area, and then enter the
number of idle timeslots to be configured.
3.
Click Finish to end the configuration.
NOTE
l
Idle Timeslots should be configured only when Trans Type of the BSC is set to TDM.
l
When the Flex Abis feature of the BTS is enabled, idle timeslots may not be configured and the EDGE
service can still run normally,if the CS traffic is light.
l
When the Flex Abis feature of the BTS is enabled, idle timeslots should be configured. Otherwise, the
EDGE service may fail for a long time,if the CS traffic is heavy.
Step 2 Configure the cell to support EDGE.
1.
On the BSC6000 Local Maintenance Terminal, right-click a cell on the Management
Tree tab page, and then choose Configure Cell Attributes from the shortcut menu.
2.
In the displayed dialog box, double-click the target cell in the Cell view list box to add it
to the Selected cells list box. Then, click Next.
3.
In the Cells to be set list box, select the target cell, and then click Set Cell Attributes. A
dialog box is displayed, as shown in Figure 1-7.
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Figure 1-7 Set Other Parameter dialog box
4.
Select EDGE Support.
5.
Click OK to end the configuration.
Step 3 Configure the channel type.
1-16
1.
On the BSC6000 Local Maintenance Terminal, right-click a TRX on the Management
Tree tab page, and then choose Configure TRX Attributes from the shortcut menu.
2.
In the displayed dialog box, select the target TRX in the TRX view list box, and then click
Configure TRX Attributes.
3.
In the displayed dialog box, click the Channel Attributes tab, as shown in Figure 1-8.
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Figure 1-8 Channel Attributes tab page
4.
Select Channel Number, and then select PDTCH or Dynamic PDCH in the Channel
Type drop-down list box. Then, set GPRS Channel Priority Type.
5.
Click OK to end the configuration.
----End
1.7 Maintenance Information
This lists the alarms and counters related to EDGE.
Alarms
The alarms related to EDGE consist of alarms related to the built-in PCU and alarms related to
the external PCU, as listed in Table 1-6 and Table 1-7.
Table 1-6 Alarms related to the built-in PCU
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Alarm ID
Alarm Name
291
Cell Transmission Delay Abnormal
293
Gb BC Faulty
294
TRX Config Error
331
NSVC Faulty
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Alarm ID
Alarm Name
332
NSVL Faulty
333
NSE Faulty
340
Cell PS Service Faulty
341
DSP Resource Overload
342
PTP BVC Faulty
343
NSVL Dynamic Configuration Process Failure
344
FAULTY DSP OVER LIMIT
Table 1-7 Alarms related to the external PCU
Alarm ID
Alarm Name
104
All PBSLs in the PCU Are Faulty
128
No Circuit Configured in the PCU
Counters
The counters related to EDGE consist of counters related to the built-in PCU and counters related
to the external PCU, as listed in Table 1-8 and Table 1-9.
Table 1-8 Counters related to the built-in PCU
1-18
Counter
Description
A331
Delivered Paging Messages for PS Service
ZTA308H
Immediate Assignment Requests per BSC
(PS Service)
A031
SGSN-Initiated Paging Requests for PS
Service
L3188D
PACKET CCCH LOAD IND Messages
Sent on Abis Interface
A9201
Number of Uplink EGPRS TBF
Establishment Attempts
A9202
Number of Successful Uplink EGPRS TBF
Establishments
A9203
Number of Failed Uplink EGPRS TBF
Establishments due to No Channel
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Counter
Description
A9204
Number of Failed Uplink EGPRS TBF
Establishments due to MS No Response
A9205
Number of Uplink EGPRS TBF Normal
Releases
A9206
Number of Uplink EGPRS TBF Abnormal
Releases due to N3101 Overflow (MS No
Response)
A9207
Number of Uplink EGPRS TBF Abnormal
Releases due to N3103 Overflow (MS No
Response)
A9208
Number of Uplink EGPRS TBF Abnormal
Releases due to SUSPEND
A9209
Number of Uplink EGPRS TBF Abnormal
Releases due to FLUSH
A9210
Number of Uplink EGPRS TBF Abnormal
Releases due to No Channel
A9211
Total Number of Sampled Concurrent
Uplink EGPRS TBFs
A9212
Sampling Times of Concurrent Uplink
EGPRS TBFs
AA9213
Average Number of Concurrent Uplink
EGPRS TBFs
A9214
Total Duration of Uplink EGPRS TBF (ms)
AA9215
Average Duration of Uplink EGPRS TBF
(s)
A9301
Number of Downlink EGPRS TBF
Establishment Attempts
A9302
Number of Successful Downlink EGPRS
TBF Establishments
A9303
Number of Failed Downlink EGPRS TBF
Establishments due to No Channel
A9304
Number of Failed Downlink EGPRS TBF
Establishments due to MS No Response
A9305
Number of Downlink EGPRS TBF Normal
Releases
A9306
Number of Downlink EGPRS TBF
Abnormal Releases due to N3105 Overflow
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Counter
Description
A9307
Number of Downlink EGPRS TBF
Abnormal Releases due to SUSPEND
A9308
Number of Downlink EGPRS TBF
Abnormal Releases due to FLUSH
A9309
Number of Downlink EGPRS TBF
Abnormal Releases due to No Channel
A9310
Total Number of Sampled Concurrent
Downlink EGPRS TBFs
A9311
Sampling Times of Concurrent Downlink
EGPRS TBFs
AA9312
Average Number of Concurrent Downlink
EGPRS TBFs
A9313
Total Duration of Downlink EGPRS TBF
(ms)
AA9314
Average Duration of Downlink EGPRS
TBF (s)
L9201
Total Number of Uplink EGPRS RLC Data
Blocks
L9202
Total Number of Uplink EGPRS MCS1
RLC Data Blocks
L9203
Total Number of Uplink EGPRS MCS2
RLC Data Blocks
L9204
Total Number of Uplink EGPRS MCS3
RLC Data Blocks
L9205
Total Number of Uplink EGPRS MCS4
RLC Data Blocks
L9206
Total Number of Uplink EGPRS MCS5
RLC Data Blocks
L9207
Total Number of Uplink EGPRS MCS6
RLC Data Blocks
L9208
Total Number of Uplink EGPRS MCS7
RLC Data Blocks
L9209
Total Number of Uplink EGPRS MCS8
RLC Data Blocks
L9210
Total Number of Uplink EGPRS MCS9
RLC Data Blocks
L9211
Total Number of Valid Uplink EGPRS
MCS1 RLC Data Blocks
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Counter
Description
L9212
Total Number of Valid Uplink EGPRS
MCS2 RLC Data Blocks
L9213
Total Number of Valid Uplink EGPRS
MCS3 RLC Data Blocks
L9214
Total Number of Valid Uplink EGPRS
MCS4 RLC Data Blocks
L9215
Total Number of Valid Uplink EGPRS
MCS5 RLC Data Blocks
L9216
Total Number of Valid Uplink EGPRS
MCS6 RLC Data Blocks
L9217
Total Number of Valid Uplink EGPRS
MCS7 RLC Data Blocks
L9218
Total Number of Valid Uplink EGPRS
MCS8 RLC Data Blocks
L9219
Total Number of Valid Uplink EGPRS
MCS9 RLC Data Blocks
RL9220
Retransmission Rate of Uplink EGPRS
MCS1 RLC Data Block (%)
RL9221
Retransmission Rate of Uplink EGPRS
MCS2 RLC Data Block (%)
RL9222
Retransmission Rate of Uplink EGPRS
MCS3 RLC Data Block (%)
RL9223
Retransmission Rate of Uplink EGPRS
MCS4 RLC Data Block (%)
RL9224
Retransmission Rate of Uplink EGPRS
MCS5 RLC Data Block (%)
RL9225
Retransmission Rate of Uplink EGPRS
MCS6 RLC Data Block (%)
RL9226
Retransmission Rate of Uplink EGPRS
MCS7 RLC Data Block (%)
RL9227
Retransmission Rate of Uplink EGPRS
MCS8 RLC Data Block (%)
RL9228
Retransmission Rate of Uplink EGPRS
MCS9 RLC Data Block (%)
L9229
Number of MCS Upgrades on Uplink
EGPRS TBF
L9230
Number of MCS Degrades on Uplink
EGPRS TBF
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Counter
Description
L9231
Number of Uplink EGPRS RLC Control
Blocks
TL9232
Average Throughput of Uplink EGPRS
RLC (kbit/s)
TL9233
Average Payload of Single Uplink EGPRS
TBF (KB)
L9234
Total Number of Uplink EGPRS TBFs
L9301
Total Number of Downlink EGPRS RLC
Data Blocks
L9302
Total Number of Downlink EGPRS MCS1
RLC Data Blocks
L9303
Total Number of Downlink EGPRS MCS2
RLC Data Blocks
L9304
Total Number of Downlink EGPRS MCS3
RLC Data Blocks
L9305
Total Number of Downlink EGPRS MCS4
RLC Data Blocks
L9306
Total Number of Downlink EGPRS MCS5
RLC Data Blocks
L9307
Total Number of Downlink EGPRS MCS6
RLC data blocks
L9308
Total Number of Downlink EGPRS MCS7
RLC Data Blocks
L9309
Total Number of Downlink EGPRS MCS8
RLC Data Blocks
L9310
Total Number of Downlink EGPRS MCS9
RLC Data Blocks
L9311
Total Number of Valid Downlink EGPRS
MCS1 RLC Data Blocks
L9312
Total Number of Valid Downlink EGPRS
MCS2 RLC Data Blocks
L9313
Total Number of Valid Downlink EGPRS
MCS3 RLC Data Blocks
L9314
Total Number of Valid Downlink EGPRS
MCS4 RLC Data Blocks
L9315
Total Number of Valid Downlink EGPRS
MCS5 RLC Data Blocks
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Counter
Description
L9316
Total Number of Valid Downlink EGPRS
MCS6 RLC Data Blocks
L9317
Total Number of Valid Downlink EGPRS
MCS7 RLC Data Blocks
L9318
Total Number of Valid Downlink EGPRS
MCS8 RLC Data Blocks
L9319
Total Number of Valid Downlink EGPRS
MCS9 RLC Data Blocks
RL9320
Retransmission Rate of Downlink EGPRS
MCS1 RLC Data Blocks (%)
RL9321
Retransmission Rate of Downlink EGPRS
MCS2 RLC Data Blocks (%)
RL9322
Retransmission Rate of Downlink EGPRS
MCS3 RLC Data Blocks (%)
RL9323
Retransmission Rate of Downlink EGPRS
MCS4 RLC Data Blocks (%)
RL9324
Retransmission Rate of Downlink EGPRS
MCS5 RLC Data Blocks (%)
RL9325
Retransmission Rate of Downlink EGPRS
MCS6 RLC Data Blocks (%)
RL9326
Retransmission Rate of Downlink EGPRS
MCS7 RLC Data Blocks (%)
RL9327
Retransmission Rate of Downlink EGPRS
MCS8 RLC Data Blocks (%)
RL9328
Retransmission Rate of Downlink EGPRS
MCS9 RLC Data Blocks (%)
L9329
Number of MCS Upgrades on Downlink
EGPRS TBF
L9330
Number of MCS Degrades on Downlink
EGPRS TBF
L9331
Number of Downlink EGPRS RLC
Control Blocks
L9332
Number of Downlink EGPRS RLC
Dummy Blocks
TL9333
Average Throughput of Downlink EGPRS
RLC (kbit/s)
TL9334
Average Payload of Single Downlink
EGPRS TBF (KB)
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Counter
Description
L9335
Total Number of Downlink EGPRS TBFs
S9101
Number of Times 8PSK_MEAN_BEP=1
S9102
Number of Times 8PSK_MEAN_BEP=2
S9103
Number of Times 8PSK_MEAN_BEP=3
S9104
Number of Times 8PSK_MEAN_BEP=4
S9105
Number of Times 8PSK_MEAN_BEP=5
S9106
Number of Times 8PSK_MEAN_BEP=6
S9107
Number of Times 8PSK_MEAN_BEP=7
S9108
Number of Times 8PSK_MEAN_BEP=8
S9109
Number of Times 8PSK_MEAN_BEP=9
S9110
Number of Times 8PSK_MEAN_BEP=10
S9111
Number of Times 8PSK_MEAN_BEP=11
S9112
Number of Times 8PSK_MEAN_BEP=12
S9113
Number of Times 8PSK_MEAN_BEP=13
S9114
Number of Times 8PSK_MEAN_BEP=14
S9115
Number of Times 8PSK_MEAN_BEP=15
S9116
Number of Times 8PSK_MEAN_BEP=16
S9117
Number of Times 8PSK_MEAN_BEP=17
S9118
Number of Times 8PSK_MEAN_BEP=18
S9119
Number of Times 8PSK_MEAN_BEP=19
S9120
Number of Times 8PSK_MEAN_BEP=20
S9121
Number of Times 8PSK_MEAN_BEP=21
S9122
Number of Times 8PSK_MEAN_BEP=22
S9123
Number of Times 8PSK_MEAN_BEP=23
S9124
Number of Times 8PSK_MEAN_BEP=24
S9125
Number of Times 8PSK_MEAN_BEP=25
S9126
Number of Times 8PSK_MEAN_BEP=26
S9127
Number of Times 8PSK_MEAN_BEP=27
S9128
Number of Times 8PSK_MEAN_BEP=28
S9129
Number of Times 8PSK_MEAN_BEP=29
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Counter
Description
S9130
Number of Times 8PSK_MEAN_BEP=30
S9131
Number of Times 8PSK_MEAN_BEP=31
S9132
Number of Times 8PSK_MEAN_BEP=32
Table 1-9 Counters related to the external PCU
Issue 02 (2008-06-30)
Counter
Description
AR3015A
Mean Number of Dynamically Configured
Channels (EDGE) (900/850 Cell)
AR3015B
Mean Number of Dynamically Configured
Channels (EDGE) (1800/1900 Cell)
CR3015
Mean Number of Dynamically Configured
Channels (EDGE)
AR3025A
Mean Number of Available Channels
(EDGE) (900/850 Cell)
AR3025B
Mean Number of Available Channels
(EDGE) (1800/1900 Cell)
CR3025
Mean Number of Available Channels
(EDGE)
R3005A
Number of Initially Configured Channels
(Static EDGE) (900/850 Cell)
R3005B
Number of Initially Configured Channels
(Static EDGE) (1800/1900 Cell)
R3006A
Number of Initially Configured Channels
(Dynamic EDGE) (900/850 Cell)
R3006B
Number of Initially Configured Channels
(Dynamic EDGE) (1800/1900 Cell)
CR3005
Number of Initially Configured Channels
(Static EDGE)
CR3006
Number of Initially Configured Channels
(Dynamic EDGE)
AL8351
Mean Number of Faulty Circuits on the Pb
Interface
AL8353
Mean Number of Blocked Circuits on the
Pb Interface
AL8354
Mean Number of Idle Circuits on the Pb
Interface
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Counter
Description
AL8355
Mean Number of Busy Circuits on the Pb
Interface
AL8352
Mean Number of Circuits in Maintenance
State on the Pb Interface
L0387
Total Number of Messages Received from
PCU
L8387
Messages Received from a PCU
R3140
Requests for TCH from the PCU
R3141
Successful Requests for TCH from the
PCU
AR3011A
Mean Number of Dynamically Configured
Channels (PDCH) (900/850 Cell)
AR3011B
Mean Number of Dynamically Configured
Channels (PDCH) (1800/1900 Cell)
CR3011
Mean Number of Dynamically Configured
Channels (PDCH)
AR3021A
Mean Number of Available Channels
(PDCH) (900/850 Cell)
AR3021B
Mean Number of Available Channels
(PDCH) (1800/1900 Cell)
CR3021
Mean Number of Available Channels
(PDCH)
R3001A
Number of Initially Configured Channels
(Static PDCH) (900/850 Cell)
R3001B
Number of Initially Configured Channels
(Static PDCH) (1800/1900 Cell)
R3002A
Number of Initially Configured Channels
(Dynamic PDCH) (900/850 Cell)
R3002B
Number of Initially Configured Channels
(Dynamic PDCH) (1800/1900 Cell)
CR3001
Number of Initially Configured Channels
(Static PDCH)
CR3002
Number of Initially Configured Channels
(Dynamic PDCH)
ZTA331
Paging Requests on the Abis Interface per
BSC (PS Service)
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Counter
Description
ZTA301H
Immediate Assignment Commands per
BSC (PS Service)
ZTL3188D
PCH Overloads due to PS Service Counted
through the Indications from the Abis
Interface per BSC
1.8 References
The references indicate the documents about EDGE from the related standard organizations.
The references are as follows:
3GPP TS 50.059
"Enhanced Data rates for GSM Evolution (EDGE); Project scheduling and open issues for
EDGE"
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