EGPRS BSC6000V900R008

HUAWEI BSC6000 Base Station Subsystem

V900R008

EGPRS

Issue 02

Date 2008-06-30

Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd

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Contents

1 EGPRS..........................................................................................................................................1-11.1 Overview.........................................................................................................................................................1-21.2 Availability......................................................................................................................................................1-31.3 Impact..............................................................................................................................................................1-41.4 Technical Description.....................................................................................................................................1-4

1.4.1 8PSK Modulation Mode.........................................................................................................................1-51.4.2 EGPRS Transmit Power.........................................................................................................................1-61.4.3 MCS-1 to MCS-9 Coding Schemes.......................................................................................................1-61.4.4 Link Quality Control..............................................................................................................................1-81.4.5 Types of Preferred EGPRS Channels.....................................................................................................1-81.4.6 CCCH 11Bit EGPRS Access.................................................................................................................1-91.4.7 Assignment of Idle Timeslots................................................................................................................1-9

1.5 Capabilities....................................................................................................................................................1-101.6 Implementation..............................................................................................................................................1-11

1.6.1 Configuring EGPRS (with Built-in PCU)............................................................................................1-111.6.2 Configuring EGPRS (with External PCU)...........................................................................................1-14

1.7 Maintenance Information..............................................................................................................................1-171.8 References.....................................................................................................................................................1-27

HUAWEI BSC6000 Base Station SubsystemEGPRS Contents

Issue 02 (2008-06-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd

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Figures

Figure 1-1 I/Q relations for the modulation and demodulation in GSM and EDGE...........................................1-5Figure 1-2 Rates of GPRS channels and those of EDGE channels......................................................................1-7Figure 1-3 Configure Site Idle Timeslot dialog box..........................................................................................1-12Figure 1-4 Set Other Parameter dialog box........................................................................................................1-13Figure 1-5 Channel Attributes tab page.............................................................................................................1-14Figure 1-6 Configure Site Idle Timeslot dialog box..........................................................................................1-15Figure 1-7 Set Other Parameter dialog box........................................................................................................1-16Figure 1-8 Channel Attributes tab page.............................................................................................................1-17

HUAWEI BSC6000 Base Station SubsystemEGPRS Figures


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Tables

Table 1-1 NEs Involved in EDGE........................................................................................................................1-3Table 1-2 GBSS products and software versions.................................................................................................1-3Table 1-3 Modulation bits and corresponding symbols.......................................................................................1-6Table 1-4 Modulation and coding schemes in EDGE..........................................................................................1-7Table 1-5 Coding schemes and number of required Abis links.........................................................................1-10Table 1-6 Alarms related to the built-in PCU.....................................................................................................1-17Table 1-7 Alarms related to the external PCU...................................................................................................1-18Table 1-8 Counters related to the built-in PCU..................................................................................................1-18Table 1-9 Counters related to the external PCU.................................................................................................1-25

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1 EGPRS

About This Chapter

1.1 OverviewThis describes the EGPRS. The Enhanced Data Rate for GSM Evolution (EDGE) can providehigh-rate data services.

1.2 AvailabilityThis lists the NEs, software versions, licenses, and other conditions required for theimplementation of EDGE.

1.3 ImpactThis describes the impact of EGPRS on system performance.

1.4 Technical DescriptionThis describes the technical aspects of EDGE. EDGE is an evolution stage of PS services. It canbe called as 2.75 G mobile communication technology. If the equipment on the current networkremains unchanged, EDGE can be implemented through the upgrade of relevant software. EDGEcan enhance the transmission rate of PS data.

1.5 CapabilitiesThis describes the EDGE capabilities of the built-in PCU and external PCU.

1.6 ImplementationEDGE implementation consists of configuring EDGE with the built-in PCU and configuringEDGE with the external PCU.

1.7 Maintenance InformationThis lists the alarms and counters related to EDGE.

1.8 ReferencesThe references indicate the documents about EDGE from the related standard organizations.

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1.1 OverviewThis describes the EGPRS. The Enhanced Data Rate for GSM Evolution (EDGE) can providehigh-rate data services.

DefinitionEDGE 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 rateof 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 documentindicates EGPRS.

PurposesUsing 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.

TermNone.

Acronyms and AbbreviationsAcronym andAbbreviation

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

1 EGPRSHUAWEI BSC6000 Base Station Subsystem

EGPRS

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Acronym andAbbreviation

Full Spelling

RLC Radio Link Control

1.2 AvailabilityThis lists the NEs, software versions, licenses, and other conditions required for theimplementation 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 DTRU BTS3000V100R001C01 and later versions

QTRU BTS3000V100R008C01 and later versions



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Product Version

BTS3012AE

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

MiscellaneousThe EDGE Support can be configured only when the GPRS Support is configured.

1.3 ImpactThis describes the impact of EGPRS on system performance.

Impact on System Performancel 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 GMPSor GEPS supports decreases.

NOTE

The number of idle timeslots and TRXs that each E1 cable can be configured with must meet thefollowing 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 eachRPPU in the PCU decreases. The number of PDCHs that can be activated on each RPPUdecreases from 120 to 100.

Impact on Other FeaturesNone.

1.4 Technical DescriptionThis describes the technical aspects of EDGE. EDGE is an evolution stage of PS services. It canbe called as 2.75 G mobile communication technology. If the equipment on the current networkremains unchanged, EDGE can be implemented through the upgrade of relevant software. EDGEcan enhance the transmission rate of PS data.

1.4.1 8PSK Modulation ModeThis describes the 8PSK modulation mode. In 8PSK modulation mode, symbols represent theabsolute phases of signals. There are eight possible symbols and each symbol represents threebits of information.

1.4.2 EGPRS Transmit Power


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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 SchemesThis describes MCS-1 to MCS-9 modulation and coding schemes used in EDGE.

1.4.4 Link Quality ControlThis describes the link quality control. The link quality control enables the system to adapt tothe radio transmission environment dynamically by changing modulation and coding schemesduring data transmission, thus improving the link quality.

1.4.5 Types of Preferred EGPRS ChannelsThis describes the types of preferred channels in EGPRS.

1.4.6 CCCH 11Bit EGPRS AccessEDGE supports 11Bit EGPRS access on the CCCH. EDGE reduces the access delay andimproves the access performance of the MS.

1.4.7 Assignment of Idle TimeslotsFor packet data services, the Abis interface supports the mapping of several timeslots to onetraffic channel. Then, the timeslots are divided and combined on the TX and RX ends.

1.4.1 8PSK Modulation ModeThis describes the 8PSK modulation mode. In 8PSK modulation mode, symbols represent theabsolute phases of signals. There are eight possible symbols and each symbol represents threebits of information.

The GSM system uses the Gaussian Minimum Shift Keying (GMSK) modulation mode. InGMSK modulation mode, bit 0 or 1 indicates the change in signal phases. Each phase changeis represented by a symbol.

In 8PSK modulation mode, symbols represent the absolute phases of signals. There are eightpossible symbols and each symbol represents three bits of information. Therefore, the data rateon 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

1

0

Q

I

Q

I

(0,1,0)

(0,0,0)

(0,0,0)

(1,0,1)

(1,0,0)

(1,1,0)

(1,1,1)

(0,1,1)



1-5

NOTE

In terms of performance, the 8PSK modulation mode is better than the GMSK modulation mode. Thedemodulation threshold of the 8PSK mode, however, is higher than the demodulation threshold of theGMSK mode. The modulation mode is radio environment specific. The PCU automatically adjusts themodulation mode based on the BER report from an MS. Therefore, the modulation and demodulation modethat 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 PowerThis 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 thesame spectrum features as those of an ordinary transceiver. When sending the signals modulatedin 8PSK modulation mode, the transceiver of the BTS in EDGE uses the transmit power that is2 dB–5 dB less than the average power in GMSK modulation mode. Thus, the requirements forspectrum can be met. In the system, the parameter 8PSK Power Level can be specified to meetthe 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 most4 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 signalsmodulated in 8PSK mode is at most 2 dB less than that of the signals modulated in GMSKmodulation mode.

1.4.3 MCS-1 to MCS-9 Coding SchemesThis 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.


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Table 1-4 Modulation and coding schemes in EDGE

Coding Scheme Modulation Mode Number of Bitsin the Payload ofEach 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 592544 + 48

29.627.2

MCS-5 448 22.4

MCS-4 GMSK 352 17.6

MCS-3 296272 + 24

14.813.6

MCS-2 224 11.2

MCS-1 176 8.8

NOTE

For 544 + 48 and 272 + 24 in the previous table, 544 and 272 indicate the significant bits, and 48 and 24indicate the padding bits.

The initial coding schemes used in EDGE can be specified through the parameters UplinkDefault 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 thesetting 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/s60.0

50.0

40.0

30.0

20.0

10.0

0.0CS-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

8.012.2 14.4

20.2

8.811.2

14.8 17.622.4

29.6

44.8

54.4

59.2

GPRSEDGE

GMSKmodulation

8PSKmodulation



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1.4.4 Link Quality ControlThis describes the link quality control. The link quality control enables the system to adapt tothe radio transmission environment dynamically by changing modulation and coding schemesduring data transmission, thus improving the link quality.

EDGE uses a set of high-efficient link quality control algorithm. EDGE has two link qualitycontrol modes: Link Adaptation (LA) and Incremental Redundancy (IR). The link quality controlmode is set through the parameter Link Quality Control Mode. For the cells where the signalquality on the Um interface is good, this parameter is set to LA.

Basic Principle of LADuring data transmission, the sender retransmits the original data block or segments the originaldata block into two data blocks and then transmits them. The receiver need not restore theprevious erroneous data blocks.

Basic Principle of IRDuring data transmission, the sender does not consider the radio transmission environment atfirst and uses a high data rate coding scheme for the data transmission. Although the data rateis high, the capability of data protection is weak. If the data is received incorrectly, the senderretransmits additional coding information. The receiver combines the new information with theprevious information and then performs decoding. The previous process is repeated until thedecoding succeeds.

l During uplink data transmission, the system notifies an MS to use the IR mode by settingRESEGMENT in the uplink resource assignment message to 0 (segmentation forbidden).In IR mode, the receiver should have sufficient memory to save the history information. Ifthe network memory is insufficient, the system can notify the MS of the memoryinsufficiency 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 cansend MS OUT OF MEMORY to the network through a DOWNLINK ACK/NACKmessage. Then, the network cannot use the IR mode in downlink data transmission.

1.4.5 Types of Preferred EGPRS ChannelsThis describes the types of preferred channels in EGPRS.

The preferred channel types are as follows:

l EGPRS dedicated channelEGPRS dedicated channels can be used by only EGPRS MSs.

l EGPRS preferred channelEGPRS preferred channels are preferentially used by EGPRS MSs. The EGPRS preferredchannels can be used by GPRS MSs when the channels are in the idle state. When an EGPRSMS requests an EGPRS preferred channel, the GPRS MS that occupies the EGPRSpreferred channel should be transferred to other channels. The signals of an EGPRS MSand those of a GPRS MS cannot be multiplexed onto one EGPRS preferred channel.

l Normal EGPRS channelNormal EGPRS channels can be used by GPRS MSs and EGPRS MSs.

l 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 GPRSChannel Priority Type.

When the system allocates PDCHs, the preferred channel type varies according to packet dataservices.

l For the GPRS service, the GPRS channels are preferentially assigned. Then the normalEGPRS channels are assigned and finally the EGPRS preferred channels are assigned.

l For the EGPRS service, the EGPRS dedicated channels are preferentially assigned. Thenthe EGPRS preferred channels are assigned and finally the normal EGPRS channels areassigned.

On the normal EGPRS channel, the GPRS MS may use the uplink channel, and the EGPRS MSmay use the downlink channel. The parameter Allow E Down G Up Switch can be set to avoidchannel multiplexing. If you want to eliminate the possibility of EDGE/GPRS co-timeslot, donot configure normal EGPRS channels.

NOTE

Channels should be selected according to the preferred channel type. For example, if the channels on theTRX that supports EGPRS are configured as GPRS channels, these channels can be used for only GPRSservices. EGPRS dedicated channels can be configured only as static channels. Other three types ofpreferred channels can be configured as static or dynamic channels.

1.4.6 CCCH 11Bit EGPRS AccessEDGE supports 11Bit EGPRS access on the CCCH. EDGE reduces the access delay andimproves 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 CCCHfor one phase packet access.

2. The network assigns the EDGE channel for the MS through the IMMEDIATEASSIGNMENT message. Therefore, the EGPRS TBF is established.

Whether to enable CCCH 11Bit EGPRS access depends on the setting of the parameter Support11BIT EGPRS Access.

1.4.7 Assignment of Idle TimeslotsFor packet data services, the Abis interface supports the mapping of several timeslots to onetraffic 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 be59.2 kbit/s. In GPRS, the CS-3/CS-4 coding scheme needs to be added with a subtimeslot. InEDGE, each PDCH can be added with three subtimeslots. EDGE coding schemes are MCS1 toMCS9. The number of Abis links required for different coding schemes is different, as describedin 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 schemeadjustment is related to the coding scheme. As described in Table 1-5, when EDGE uses codingschemes MCS-3-MCS-6, an idle timeslot on the Abis interface is required. The idle timeslotson the Abis interface in the same BTS can be allocated to any PDCH on any TRX in the samecabinet group. The idle timeslot on the Abis interface is set through the parameter IdleTimeslots.

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 beconfigured 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 beconfigured. Otherwise, the EDGE service may fail for a long time.

1.5 CapabilitiesThis 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:

l The system uses the resource pool redundancy configuration mode. The maximumconfiguration 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 thechannels 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 channelssupport 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 ImplementationEDGE implementation consists of configuring EDGE with the built-in PCU and configuringEDGE 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.

Prerequisitel 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 Subrack-

OSP Mapping.l The license is applied and activated. To apply for and activate the license, do as follows:

1. 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 theResource control items column.

– Fill in the number of TRXs to be purchased in the Number of resources columncorresponding to the Number of the TRX Supporting EDGE in the Resourcecontrol items column.

2. Activate the license on the Local Maintenance Terminal. For details, refer toActivating the BSC License.

Procedure

Step 1 Configure site idle timeslot.

1. On the Management Tree tab page of the BSC6000 Local Maintenance Terminal, right-click the target BTS, and then choose Configure Site Idle Timeslot from the shortcutmenu. 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 thenumber 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 beconfigured 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 beconfigured. Otherwise, the EDGE service may fail for a long time.

Step 2 Configure the cell to support EDGE.

1. On the BSC6000 Local Maintenance Terminal, right-click a cell on the ManagementTree 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 itto 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. Adialog 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 ManagementTree 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 clickConfigure 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 servicessuch as PDTCH or TCH Full Rate in the Channel Type drop-down list box. Then, setGPRS 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.

Prerequisitel 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 Subrack-

OSP Mapping.l The license is applied and activated. To apply for and activate the license, do as follows:

1. 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 theResource control items column.

– Fill in the number of TRXs to be purchased in the Number of resources columncorresponding to the Number of the TRX Supporting EDGE in the Resourcecontrol items column.


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2. Activate the license on the Local Maintenance Terminal. For details, refer toActivating 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, right-click the target BTS, and then choose Configure Site Idle Timeslot from the shortcutmenu. 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 thenumber 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 EDGEservice 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, theEDGE 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 ManagementTree 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 itto 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. Adialog 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. On the BSC6000 Local Maintenance Terminal, right-click a TRX on the ManagementTree 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 clickConfigure 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 ChannelType drop-down list box. Then, set GPRS Channel Priority Type.

5. Click OK to end the configuration.

----End

1.7 Maintenance InformationThis 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 tothe external PCU, as listed in Table 1-6 and Table 1-7.

Table 1-6 Alarms related to the built-in PCU

Alarm ID Alarm Name

291 Cell Transmission Delay Abnormal

293 Gb BC Faulty

294 TRX Config Error

331 NSVC Faulty



1-17

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

CountersThe counters related to EDGE consist of counters related to the built-in PCU and counters relatedto the external PCU, as listed in Table 1-8 and Table 1-9.

Table 1-8 Counters related to the built-in PCU

Counter Description

A331 Delivered Paging Messages for PS Service

ZTA308H Immediate Assignment Requests per BSC(PS Service)

A031 SGSN-Initiated Paging Requests for PSService

L3188D PACKET CCCH LOAD IND MessagesSent on Abis Interface

A9201 Number of Uplink EGPRS TBFEstablishment Attempts

A9202 Number of Successful Uplink EGPRS TBFEstablishments

A9203 Number of Failed Uplink EGPRS TBFEstablishments due to No Channel


EGPRS


Issue 02 (2008-06-30)

Counter Description

A9204 Number of Failed Uplink EGPRS TBFEstablishments due to MS No Response

A9205 Number of Uplink EGPRS TBF NormalReleases

A9206 Number of Uplink EGPRS TBF AbnormalReleases due to N3101 Overflow (MS NoResponse)

A9207 Number of Uplink EGPRS TBF AbnormalReleases due to N3103 Overflow (MS NoResponse)

A9208 Number of Uplink EGPRS TBF AbnormalReleases due to SUSPEND

A9209 Number of Uplink EGPRS TBF AbnormalReleases due to FLUSH

A9210 Number of Uplink EGPRS TBF AbnormalReleases due to No Channel

A9211 Total Number of Sampled ConcurrentUplink EGPRS TBFs

A9212 Sampling Times of Concurrent UplinkEGPRS TBFs

AA9213 Average Number of Concurrent UplinkEGPRS TBFs

A9214 Total Duration of Uplink EGPRS TBF (ms)

AA9215 Average Duration of Uplink EGPRS TBF(s)

A9301 Number of Downlink EGPRS TBFEstablishment Attempts

A9302 Number of Successful Downlink EGPRSTBF Establishments

A9303 Number of Failed Downlink EGPRS TBFEstablishments due to No Channel

A9304 Number of Failed Downlink EGPRS TBFEstablishments due to MS No Response

A9305 Number of Downlink EGPRS TBF NormalReleases

A9306 Number of Downlink EGPRS TBFAbnormal Releases due to N3105 Overflow



1-19

Counter Description

A9307 Number of Downlink EGPRS TBFAbnormal Releases due to SUSPEND

A9308 Number of Downlink EGPRS TBFAbnormal Releases due to FLUSH

A9309 Number of Downlink EGPRS TBFAbnormal Releases due to No Channel

A9310 Total Number of Sampled ConcurrentDownlink EGPRS TBFs

A9311 Sampling Times of Concurrent DownlinkEGPRS TBFs

AA9312 Average Number of Concurrent DownlinkEGPRS TBFs

A9313 Total Duration of Downlink EGPRS TBF(ms)

AA9314 Average Duration of Downlink EGPRSTBF (s)

L9201 Total Number of Uplink EGPRS RLC DataBlocks

L9202 Total Number of Uplink EGPRS MCS1RLC Data Blocks









L9211 Total Number of Valid Uplink EGPRSMCS1 RLC Data Blocks


EGPRS


Issue 02 (2008-06-30)

Counter Description









RL9220 Retransmission Rate of Uplink EGPRSMCS1 RLC Data Block (%)









L9229 Number of MCS Upgrades on UplinkEGPRS TBF

L9230 Number of MCS Degrades on UplinkEGPRS TBF



1-21

Counter Description

L9231 Number of Uplink EGPRS RLC ControlBlocks

TL9232 Average Throughput of Uplink EGPRSRLC (kbit/s)

TL9233 Average Payload of Single Uplink EGPRSTBF (KB)

L9234 Total Number of Uplink EGPRS TBFs

L9301 Total Number of Downlink EGPRS RLCData Blocks

L9302 Total Number of Downlink EGPRS MCS1RLC Data Blocks





L9307 Total Number of Downlink EGPRS MCS6RLC data blocks




L9311 Total Number of Valid Downlink EGPRSMCS1 RLC Data Blocks






EGPRS


Issue 02 (2008-06-30)

Counter Description





RL9320 Retransmission Rate of Downlink EGPRSMCS1 RLC Data Blocks (%)









L9329 Number of MCS Upgrades on DownlinkEGPRS TBF

L9330 Number of MCS Degrades on DownlinkEGPRS TBF

L9331 Number of Downlink EGPRS RLCControl Blocks

L9332 Number of Downlink EGPRS RLCDummy Blocks

TL9333 Average Throughput of Downlink EGPRSRLC (kbit/s)

TL9334 Average Payload of Single DownlinkEGPRS TBF (KB)



1-23

Counter Description

L9335 Total Number of Downlink EGPRS TBFs

S9101 Number of Times 8PSK_MEAN_BEP=1






























EGPRS


Issue 02 (2008-06-30)

Counter Description




Table 1-9 Counters related to the external PCU

Counter Description

AR3015A Mean Number of Dynamically ConfiguredChannels (EDGE) (900/850 Cell)

AR3015B Mean Number of Dynamically ConfiguredChannels (EDGE) (1800/1900 Cell)

CR3015 Mean Number of Dynamically ConfiguredChannels (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 PbInterface

AL8353 Mean Number of Blocked Circuits on thePb Interface

AL8354 Mean Number of Idle Circuits on the PbInterface



1-25

Counter Description

AL8355 Mean Number of Busy Circuits on the PbInterface

AL8352 Mean Number of Circuits in MaintenanceState on the Pb Interface

L0387 Total Number of Messages Received fromPCU

L8387 Messages Received from a PCU

R3140 Requests for TCH from the PCU

R3141 Successful Requests for TCH from thePCU

AR3011A Mean Number of Dynamically ConfiguredChannels (PDCH) (900/850 Cell)

AR3011B Mean Number of Dynamically ConfiguredChannels (PDCH) (1800/1900 Cell)

CR3011 Mean Number of Dynamically ConfiguredChannels (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 perBSC (PS Service)


EGPRS


Issue 02 (2008-06-30)

Counter Description

ZTA301H Immediate Assignment Commands perBSC (PS Service)

ZTL3188D PCH Overloads due to PS Service Countedthrough the Indications from the AbisInterface per BSC

1.8 ReferencesThe 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 forEDGE"



1-27

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EGPRS BSC6000V900R008

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