active atbf allocation(gbss15.0_01)

GSM BSSGBSS15.0

Active TBF Allocation FeatureParameter Description

Issue 01

Date 2013-05-06

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2013. All rights reserved.No part of this document may be reproduced or transmitted in any form or by any means without prior writtenconsent 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. NoticeThe purchased products, services and features are stipulated by the contract made between Huawei and thecustomer. All or part of the products, services and features described in this document may not be within thepurchase 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 representationsof any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in thepreparation of this document to ensure accuracy of the contents, but all statements, information, andrecommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Technologies Co., Ltd.Address: Huawei Industrial Base

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Website: http://www.huawei.com

Email: [email protected]

Issue 01 (2013-05-06) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.

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mailto:[email protected]

Contents

1 About This Document..................................................................................................................11.1 Scope..............................................................................................................................................................................11.2 Intended Audience..........................................................................................................................................................11.3 Change History...............................................................................................................................................................1

2 Overview.........................................................................................................................................32.1 Introduction....................................................................................................................................................................32.2 Benefits...........................................................................................................................................................................32.3 Feature Support by NE...................................................................................................................................................4

3 Technical Description...................................................................................................................5

4 Related Features.............................................................................................................................74.1 Prerequisite Feature........................................................................................................................................................74.2 Mutually Exclusive Feature............................................................................................................................................74.3 Affected Feature.............................................................................................................................................................7

5 Impact on the Network.................................................................................................................95.1 Impact on System Capacity............................................................................................................................................95.2 Impact on Network Performance....................................................................................................................................9

6 Engineering Guidelines.............................................................................................................106.1 When to Use Active TBF Allocation...........................................................................................................................106.2 Information to Be Collected.........................................................................................................................................106.3 Network Planning.........................................................................................................................................................106.3.1 RF Planning...............................................................................................................................................................106.3.2 Network Topology.....................................................................................................................................................116.3.3 Hardware Planning....................................................................................................................................................116.4 Deploying Active TBF Allocation...............................................................................................................................116.4.1 Deployment Requirements........................................................................................................................................116.4.2 Data Preparation........................................................................................................................................................126.4.3 Feature Activation.....................................................................................................................................................126.4.4 Activation Observation..............................................................................................................................................136.4.5 Deactivation...............................................................................................................................................................146.5 Monitoring....................................................................................................................................................................156.6 Parameter Optimization................................................................................................................................................15

GSM BSSActive TBF Allocation Feature Parameter Description Contents


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6.7 Troubleshooting............................................................................................................................................................15

7 Parameters.....................................................................................................................................16

8 Counters........................................................................................................................................50

9 Glossary.........................................................................................................................................53

10 Reference Documents...............................................................................................................54

GSM BSSActive TBF Allocation Feature Parameter Description Contents


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1 About This Document

1.1 ScopeThis document describes the GBFD-119407 Active TBF Allocation feature.

1.2 Intended AudienceThis document is intended for:

l Personnel who need to understand the Active TBF Allocation featurel Personnel who work with Huawei GPRS products

1.3 Change HistoryThis section provides information about the changes in different document versions.

There are two types of changes, which are defined as follows:

l Feature change: refers to a change in the Active TBF Allocation feature of a specific productversion.

l Editorial change: refers to a change in wording or the addition of information that was notdescribed in the earlier version.

Document IssuesThe document issue is as follows:

l 01 (2013-05-06)l Draft A (2013-02-27)

01 (2013-05-06)This is the first commercial release of GBSS15.0.

Compared with Draft A (2013-02-27), Issue 01 (2013-05-06) has no change.

GSM BSSActive TBF Allocation Feature Parameter Description 1 About This Document


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Draft A (2013-02-27)This is a draft.

Compared with Issue 01 (2012-11-07) of GBSS14.0, Draft A (2013-02-27) of GBSS15.0incorporates the changes described in the following table.

Change Type Change Description Parameter Change

Feature change Added descriptions about theBSC6910 and eGBTS.Added the section 2.3Feature Support by NE.

None

Editorial change Added the followingsections:l 6.4.1 Deployment

Requirementsl 6.4.2 Data Preparationl 6.4.3 Feature Activationl 6.4.4 Activation

Observationl 6.4.5 Deactivation

None

GSM BSSActive TBF Allocation Feature Parameter Description 1 About This Document


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2 Overview

2.1 IntroductionIn recent years, GSM packet-switched (PS) services have developed rapidly to supplementUMTS PS services in terms of wireless coverage. Data traffic is multiplied every year. Thepercentage of wireless resources occupied by PS services rapidly increases. However, operatorsbenefit less from each packet data channel (PDCH) during peak hours. This is because low-throughput services occupy a large proportion of the services on live networks and the numberof temporary block flows (TBFs) multiplexed on a PDCH cannot reflect the actual PDCH usage.

During a TBF, only data transmission occupies transmission resources on the Um interface eventhough data transmission time accounts for only part of a TBF life cycle. For low-throughputservices, data transmission time accounts for a small part of a TBF life cycle. This leads to a lowefficiency for PDCHs to carry TBFs, which wastes channel resources.

The Active TBF Allocation feature enables the BSC to periodically measure the downlink TBFtransmission on PDCHs and directs the BSC to allocate TBFs to PDCHs to balance the loadsbetween PDCHs. This brings the following benefits:

l Increases the downlink logical link control (LLC) throughput for GPRS and EGPRS MSswhen the number of activated PDCHs is constant.

l Decreases the number of activated PDCHs and improves the efficiency in which PDCHscarry TBFs, while maintaining the cell throughput and downlink user rate. This reducesnetwork interference.

2.2 BenefitsThe Active TBF Allocation feature applies to areas with hot spots for PS services with thefollowing characteristics:

l PS traffic volume is high. For example, the average downlink PDCH multiplexing rate is3 or higher.

l Wireless Application Protocol (WAP) and instant messaging (IM) services account for alarge proportion of PS services, among which IM services account for more than 60%.These hot spots include colleges, waiting rooms, and shopping malls.

Enabling this feature in the preceding scenarios provides the following benefits:

GSM BSSActive TBF Allocation Feature Parameter Description 2 Overview


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l Increases the downlink LLC throughput of GPRS or EGPRS MSs by 10% to 20% whenthe number of activated PDCHs remains unchanged. This significantly improves the PSuser rate and user experience.

l Decreases the number of activated PDCHs by 10% to 25% and increases the efficiency inwhich PDCHs carry TBFs by 10% to 25%, while maintaining the cell throughput anddownlink user rate. This improves the usage of TRX resources, reduces unwanted capacityexpansions, and brings more profits to operators.

l Optimizes the PDCH allocation by simultaneously adjusting the PS user rate and thenumber of activated PDCHs, for example, increases the PS user rate while decreasing thenumber of activated PDCHs.

2.3 Feature Support by NE

Table 2-1 Feature support by NE

Feature BSC6900 BSC6910 GBTS eGBTS

Active TBFAllocation

√ √ √ √

NOTE

√ indicates that the NE supports this feature. × indicates that the NE does not support this feature.

GSM BSSActive TBF Allocation Feature Parameter Description 2 Overview


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3 Technical Description

On live GSM networks, the BSC uses the common PDCH allocation algorithm to allocatePDCHs to MSs and perform dynamic PDCH conversions based on the number of TBFsmultiplexed on PDCHs. In this scenario, the BSC:

l Preferentially allocates PDCHs or PDCH channel groups that carry a small number ofTBFs.

l Triggers a dynamic PDCH conversion when the average number of TBFs on PDCHsreaches the specified threshold.

The number of TBFs multiplexed on a PDCH cannot reflect the actual PDCH usage. For low-throughput services, data transmission time is a small part of a TBF life cycle. This leads to aPDCH usage.

The BSC uses the active TBF allocation algorithm to calculate the downlink load on each PDCHin a cell and allocate PDCHs to MSs based on the downlink PDCH load to balance the loadsbetween PDCHs. This increases the downlink LLC throughput of GPRS or EGPRS MSs andimproves user experience.

Assuming that three PDCHs (P1, P2, and P3) are available. The following table lists the numberof TBFs multiplexed on each of the three PDCHs and the types of services carried by theseTBFs.

Table 3-1 TBFs multiplexed and services carried on PDCHs

PDCH No. Number of TBFsMultiplexed on a PDCH

Services Carried by TBFs

P1 3 Two TBFs carry low-throughput services, and theother TBF carries FileTransfer Protocol (FTP)services.

P2 2 Both TBFs carry FTPservices.

P3 3 All TBFs carry low-throughput services.

GSM BSSActive TBF Allocation Feature Parameter Description 3 Technical Description


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In this example, the differences between the common PDCH allocation algorithm and the activeTBF allocation algorithm in terms of TBF allocation are as follows:

In the common PDCH allocation algorithm, the BSC preferentially allocates P2 to a newlyaccessed MS. This brings a problem that the data transmission rate decreases for the high-throughput FTP services carried by the TBFs on P2 because the newly accessed PS servicesoccupy TBF resources on P2.

In the active TBF allocation algorithm, the BSC monitors and measures the data traffic or loadon each PDCH before allocating PDCHs to an MS. The BSC detects that P3 is carrying low-throughout services while P2 is carrying high-throughput FTP services. Therefore, the BSCattempts to allocate P3 rather than P2 to the newly accessed MS. In this manner, data traffic ofdifferent services is evenly distributed on PDCHs to achieve conflict-free data transmission.

The BSC implements the Active TBF Allocation feature as follows:

1. Monitors the downlink data transmission on each PDCH in real time and periodicallymeasures the downlink load of each PDCH.

2. Preferentially allocates PDCHs with lighter loads to MSs based on the latest loadinformation of PDCHs. This balances the loads between PDCHs and improves the downlinkuser rate.

To enable the Active TBF Allocation feature, set ACTIVETBFSWITCH(GSM BSC6900,GSMBSC6910) to ON(On).

You can view the values of the AL9529: Downlink Throughput of GPRS Users LLC PDU orAL9530: Downlink Throughput of EGPRS Users LLC PDU counter to know the benefits of thisfeature on the PS user rate.

To increase the efficiency in which PDCHs carry TBFs, set the following parameters to largevalues:

UPDYNCHNTRANLEV(GSM BSC6900,GSM BSC6910) and DWNDYNCHNTRANLEV(GSM BSC6900,GSM BSC6910)

l If either of the two parameters is set to a large value, the average number of activatedPDCHs is small. This improves the efficiency in which PDCHs carry TBFs and the gainsin key performance indicators (KPIs) for circuit switched (CS) services. However, if eitheris set to a too large value, the performance of PS services may deteriorate and the downlinkPS user rate decreases.

l If either of the two parameters is set to a small value, the average number of activatedPDCHs is large. This reduces the efficiency in which PDCHs carry TBFs, decreases thegains in KPIs for CS services, but increases the user rate and improves user experience.

Therefore, adjust the values of the preceding parameters according to actual network conditionsand operators' requirements.

GSM BSSActive TBF Allocation Feature Parameter Description 3 Technical Description


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4 Related Features

4.1 Prerequisite FeatureThis feature depends on the GBFD-114101 GPRS feature.

4.2 Mutually Exclusive FeatureNone

4.3 Affected FeatureIf... Then…

This feature and GBFD-511603 IM ServiceEfficiency Improvement are both enabled

The IMPDCHMULTIPLEXWEIGHT(GSM BSC6900,GSM BSC6910) parameterdoes not take effect for GBFD-511603 IMService Efficiency Improvement.

This feature and GBFD-511604 WebBrowsing Service Efficiency Improvementare both enabled

The WEBPDCHMULTIPLEXWEIGHT(GSM BSC6900,GSM BSC6910) parameterdoes not take effect for GBFD-511604 WebBrowsing Service Efficiency Improvement.

This feature and GBFD-511605 EmailService Efficiency Improvement are bothenabled

The EMAILPDCHMULTIPLEXWEIGHT(GSM BSC6900,GSM BSC6910) parameterdoes not take effect for GBFD-511605 EmailService Efficiency Improvement.

This feature and GBFD-511606 StreamingMedia Service Resource Balancing are bothenabled

The STREAMPDCHMULTIPLEX-WEIGHT(GSM BSC6900,GSM BSC6910)parameter does not take effect forGBFD-511606 Streaming Media ServiceResource Balancing.

GSM BSSActive TBF Allocation Feature Parameter Description 4 Related Features


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If... Then…

This feature and GBFD-511607 P2PResource Balancing are both enabled

The P2PPDCHMULTIPLEXWEIGHT(GSM BSC6900,GSM BSC6910) parameterdoes not take effect for GBFD-511607 P2PResource Balancing.

GSM BSSActive TBF Allocation Feature Parameter Description 4 Related Features


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5 Impact on the Network

5.1 Impact on System CapacityOn the live network, the number of TBFs multiplexed on a PDCH cannot reflect the actual PDCHusage. For low-throughput services, data transmission time is a small part of a TBF life cycle.This leads to a low PDCH usage.

The Active TBF Allocation feature directs the BSC to allocate PDCHs to TBFs to balance theloads between PDCHs. Enabling this feature has the following impacts on system capacity:

l Increases the downlink LLC throughput of GPRS or EGPRS MSs when the number ofactivated PDCHs remains unchanged or decreases.

l Increases the efficiency in which PDCHs carry TBFs by decreasing the number of activatedPDCHs, while maintaining the cell throughput and downlink user rate.

5.2 Impact on Network PerformanceEnabling this feature has the following impacts on network performance:

l Increases the downlink LLC throughput for GPRS and EGPRS MSs by 10% to 20% whenthe number of activated PDCHs remains unchanged or decreases.

l Decreases the number of activated PDCHs by 10% to 25% and increases the efficiency inwhich PDCHs carry TBFs by 10% to 25%, while maintaining the cell throughput anddownlink user rate. This improves the usage of TRX resources.

l Increases the uplink PDCH multiplexing rate and decreases the uplink LLC throughput forGPRS and EGPRS MSs if the number of PDCHs decreases. This is because this featureenables the BSC to allocate PDCHs based on only the downlink TBF transmission. Toincrease the uplink LLC throughput of GPRS or EGPRS MSs, increase the uplink codingscheme for transmission during initial access.

l Increases the CPU usage on the control plane and the user plane by a maximum of 2.5%because enabling this feature causes periodic measurements of downlink TBF transmission.This decreases network capacity.

GSM BSSActive TBF Allocation Feature Parameter Description 5 Impact on the Network


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6 Engineering Guidelines

6.1 When to Use Active TBF AllocationThe effect of the Active TBF Allocation feature depends on the PS service model, traffic volume,and parameter settings. It is recommended that this feature be used when both the followingconditions are met:

l PS traffic volume is high. For example, the average PDCH multiplexing rate is 3 or higherand the average number of activated PDCHs is greater than 8.

l WAP and IM services account for a large proportion of PS services, among which IMservices account for more than 60%.

If either of the preceding conditions is not met, do not enable this feature because the gains willbe negligible.

6.2 Information to Be CollectedBefore deploying the Active TBF Allocation feature, collect the following information toevaluate performance gains:

l Proportion of PDCHs during peak hours

l Efficiency in which PDCHs carry TBFs

l PDCH multiplexing rate

l User rate

l Proportion of PS services among all services

6.3 Network Planning

6.3.1 RF PlanningN/A

GSM BSSActive TBF Allocation Feature Parameter Description 6 Engineering Guidelines


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6.3.2 Network TopologyN/A

6.3.3 Hardware PlanningN/A

6.4 Deploying Active TBF Allocation

6.4.1 Deployment Requirements

Table 6-1 Deployment requirements

Aspect Requirement

Related features See chapter 4 Related Features

BSC The BSC is configured with a built-in packet control unit(PCU), PS service processing boards, and Gb interface boards.

BTS None

GSM networking None

MS None

MSC None

License The license controlling this feature has been activated. Fordetails on how to activate the license, see LicenseManagement Feature Parameter Description. For detailsabout license items, see License Control Item Description.

Others None



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6.4.2 Data Preparation

Table 6-2 Data preparation

ParameterName

Parameter ID Remarks(Configuration Principlefor DifferentScenarios)

Data Source ParameterName

Dynamic TBFSwitch

ACTIVETBFSWITCH(GSMBSC6900,GSMBSC6910)

BSC6900/BSC6910

Set this parameter to ON(ON).

Networkplanning

UplinkMultiplexThreshold ofDynamicChannelConversion

UPDYNCHNTRANLEV(GSMBSC6900,GSMBSC6910)

BSC6900/BSC6910

To increase the downlinkLLC throughput for GPRSand EGPRS MSs, you onlyneed to set Dynamic TBFSwitch to ON(ON).To achieve the gains in theefficiency in whichPDCHs carry TBFs, setDynamic TBF Switch toON(ON) and UplinkMultiplex Threshold ofDynamic ChannelConversion to a largevalue.

Networkplanning

DownlinkMultiplexThreshold ofDynamicChannelConversion

DWNDYNCHNTRANLEV(GSMBSC6900,GSMBSC6910)

BSC6900/BSC6910

To increase the downlinkLLC throughput for GPRSand EGPRS MSs, you onlyneed to set Dynamic TBFSwitch to ON(ON).To increase the efficiencyin which PDCHs carryTBFs, set Dynamic TBFSwitch to ON(ON) andDownlink MultiplexThreshold of DynamicChannel Conversion to alarge value.

Networkplanning

6.4.3 Feature Activation

Using the LMT

On the BSC LMT, run the SET GCELLPSCHM command with Dynamic TBF Switch set toON(ON).



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MML Examples//Activating Active TBF Allocation

SET GCELLPSCHM: IDTYPE=BYID, CELLID=1, ACTIVETBFSWITCH=ON;

Using the CMENOTE

When configuring the Active TBF Allocation feature on the CME, you must perform a single configurationfirst, and then perform batch modifications if required.

You must perform a single configuration for a parameter before batch modifications of the parameter. Youare advised to perform batch modifications before logging out of the parameter setting interface.

Step 1 Configure a single object on the CME. (CME single configuration)

Set parameters on the CME configuration interface according to the operation sequencedescribed in Table 6-3. For the method of performing the CME single configuration, see CMESingle Configuration Operation Guide.

Step 2 (Optional) Modify objects in batches on the CME. (CME batch modification center)

To modify objects, such as BSCs, BTSs, cells, and TRXs, in batches, click the icon on theCME configuration interface to start the batch modification wizard. For the method ofperforming batch modifications through the CME batch modification center, press F1 on thewizard interface to obtain online help.

----End

Table 6-3 Configuring parameters on the CME

SN ManagedObject(MO)

NE ParameterName

ParameterID

SupportsCME BatchModification Center

1 GCELLPSCHM

BSC6900/BSC6910

DynamicTBF Switch

ACTIVETBFSWITCH

Yes

6.4.4 Activation ObservationStep 1 Subscribe to the TX.DOWN.EGPRS.LLC.PDU.THRPUT.RATE.AVG counter (AL9530:

Downlink Throughput of EGPRS Users LLC PDU).

Step 2 On the BSC LMT, run the SET GTRXCHAN command with Channel Type set to PDTCH(PDTCH) for at least one channel and Channel Type set to TCHFR(TCH Full Rate) formultiple channels.

Step 3 Run the SET GCELLPSCHM command with Dynamic TBF Switch set to OFF(OFF).

Step 4 Use multiple MSs to initiate EGPRS PS services. Ensure that most of them are low-throughputservices and others are FTP services.

Step 5 Run the SET GCELLPSCHM command with Dynamic TBF Switch set to ON(ON).



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Step 6 Maintain the EGPRS PS services in step 4 for a period of time.

Expected result: The value of AL9530: Downlink Throughput of EGPRS Users LLC PDUincreases after the Active TBF Allocation feature is enabled.

----End

6.4.5 Deactivation

Using the LMT

On the BSC LMT, run the SET GCELLPSCHM command with Dynamic TBF Switch set toOFF(OFF).

MML Examples

//Deactivating Active TBF Allocation

SET GCELLPSCHM: IDTYPE=BYID, CELLID=1, ACTIVETBFSWITCH=OFF;

Using the CMENOTE

When configuring the Active TBF Allocation feature on the CME, you must perform a single configurationfirst, and then perform batch modifications if required.

You must perform a single configuration for a parameter before batch modifications of the parameter. Youare advised to perform batch modifications before logging out of the parameter setting interface.

Step 1 Configure a single object on the CME. (CME single configuration)

Set parameters on the CME configuration interface according to the operation sequencedescribed in Table 6-4. For the method of performing the CME single configuration, see CMESingle Configuration Operation Guide.

Step 2 (Optional) Modify objects in batches on the CME. (CME batch modification center)

To modify objects, such as BSCs, BTSs, cells, and TRXs, in batches, click the icon on theCME configuration interface to start the batch modification wizard. For the method ofperforming batch modifications through the CME batch modification center, press F1 on thewizard interface to obtain online help.

----End

Table 6-4 Configuring the parameter on the CME

SN MO NE ParameterName

ParameterID

SupportsCME BatchModification Center

1 GCELLPSCHM

BSC6900/BSC6910

DynamicTBF Switch

ACTIVETBFSWITCH

Yes



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6.5 MonitoringTo determine whether network performance needs to be optimized after the Active TBFAllocation feature is enabled, monitor the counters related to the following aspects:

1. Downlink LLC throughput for GPRS MSs and downlink LLC throughput for EGPRS MSsThese counters reflect increases in the downlink LLC throughput for GPRS and EGPRSMSs, respectively.

2. Average number of occupied PDCHs and the efficiency in which PDCHs carry TBFsThese counters reflect the increase in the efficiency in which PDCHs carry TBFs.l Efficiency in which PDCHs carry TBFs (during half an hour) = (Total bytes of sent

LLC PDUs x 8)/(1024 x 1800 x Average number of occupied PDCHs)l Efficiency in which PDCHs carry TBFs (during an hour) = (Total bytes of sent LLC

PDUs x 8)/(1024 x 3600 x Average number of occupied PDCHs)3. Percentage of half-rate TCH (TCHH) traffic volume and the downlink High Quality

Indicator (HQI)These counters reflect the gains in voice quality.

l Percentage of TCHH traffic volume = K3034/K3014l Downlink HQI = (CS410B + CS410D + CS411B + CS411D)/(CS410B + CS410D +

CS411B + CS411D + CS412B + CS412D + CS413B + CS413D + CS414B + CS414D +CS415B + CS415D + CS416B + CS416D + CS417B + CS417D)

The network performance does not need to be optimized if the gains reflected by the precedingcounters are as expected.

6.6 Parameter OptimizationAfter enabling this feature, adjust the values of the UPDYNCHNTRANLEV andDWNDYNCHNTRANLEV parameters according to actual network conditions and operators'requirements to achieve optimum network performance.

l If either of the two parameters is set to a large value, the average number of activatedPDCHs is small. This improves the efficiency in which PDCHs carry TBFs and the gainsin KPIs for CS services but may deteriorate the performance of PS services.

l If either of the two parameters is set to a small value, the average number of activatedPDCHs is large. This reduces the efficiency in which PDCHs carry TBFs and the gains inKPIs for CS services but improves the user rate and user experience.

6.7 TroubleshootingN/A



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7 Parameters

Table 7-1 Parameter description

Parameter ID NE MMLCommand

Feature ID Feature Name Description

ACTIVETBFSWITCH

BSC6900 SETGCELLPSCHM

GBFD-119407 Active TBFAllocation

Meaning:Whether to enable theActive TBFAllocationfeature. Whenthis parameter isset to ON(ON),the BSC enablesthe Active TBFAllocationfeature.GUI ValueRange:OFF(OFF), ON(ON)Unit:NoneActual ValueRange:OFF, ONDefaultValue:OFF(OFF)

GSM BSSActive TBF Allocation Feature Parameter Description 7 Parameters


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ACTIVETBFSWITCH


GBFD-119407 Active TBFAllocation

Meaning:Whether to enable theActive TBFAllocationfeature. Whenthis parameter isset to ON(ON),the BSC enablesthe Active TBFAllocationfeature.GUI ValueRange:OFF(OFF), ON(ON)Unit:NoneActual ValueRange:OFF, ONDefaultValue:OFF(OFF)



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UPDYNCHNTRANLEV


GBFD-114101GBFD-113101GBFD-119303GBFD-119501GBFD-114201GBFD-119505

GPRSPDCH DynamicAdjustmentLoad SharingAdaptiveAdjustment ofUplink andDownlinkChannelsEGPRSPDCH DynamicAdjustment withTwo Thresholds

Meaning:Dynamic PDCHapplication andrelease policywhen the cellload changes.The BSCtriggers adynamic PDCHapplication if"CHIDLHIGHTHR" is set to 100and the numberof users carriedon the existingPDCHs exceedthe value of thisparameterdivided by 10.The BSCtriggers adynamic PDCHapplicationwhen theavailablebandwidth onPDCHs is lessthan the value of"PDCHGBR" inthe "SETBTSOTHPARA" command, theproportion ofidle TCHs isgreater than thevalue of"CHIDLHIGHTHR", and thenumber of userscarried on thePDCHs exceedsthe value of thisparameterdivided by 10. Adynamicchannel releaseis triggeredwhen thefollowing



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conditions aremet:"PSDUALTHROPTSW" is setto OFF."CHIDLHIGHTHR" is not set to100. Theproportion ofidle CS channelsis lower than"CHIDLLOWTHR". Thenumber ofuplink MSscarried on aPDCH is smallerthan UplinkMultiplexThreshold ofDynamicChannelConversion/10.If Abis or DSPresources areinsufficient, theresources ofother cells canbe preemptedonly when thecell load ishigher thanUplinkMultiplexThreshold ofDynamicChannelConversion/10,and theresources andchannels can bereleased onlywhen the cellload is lowerthan UplinkMultiplexThreshold ofDynamicChannel



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Conversion/10.To implementtimely dynamicchannelconversion andreduce channelmultiplexing,you are advisedto set"UPDYNCHNTRANLEV" to avalue smallerthan"PDCHUPLEV".GUI ValueRange:10~70Unit:NoneActual ValueRange:10~70Default Value:40



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UPDYNCHNTRANLEV







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conditions aremet:"PSDUALTHROPTSW" is setto OFF."CHIDLHIGHTHR" is not set to100. Theproportion ofidle CS channelsis lower than"CHIDLLOWTHR". Thenumber ofuplink MSscarried on aPDCH is smallerthan UplinkMultiplexThreshold ofDynamicChannelConversion/10.If Abis orGUPPSsubsystemresources areinsufficient, theresources ofother cells canbe preemptedonly when thecell load ishigher thanUplinkMultiplexThreshold ofDynamicChannelConversion/10,and theresources andchannels can bereleased onlywhen the cellload is lowerthan UplinkMultiplexThreshold of



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DynamicChannelConversion/10.To implementtimely dynamicchannelconversion andreduce channelmultiplexing,you are advisedto set"UPDYNCHNTRANLEV" to avalue smallerthan"PDCHUPLEV".GUI ValueRange:10~70Unit:NoneActual ValueRange:10~70Default Value:40



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DWNDYNCHNTRANLEV







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conditions aremet:"PSDUALTHROPTSW" is setto OFF."CHIDLHIGHTHR" is not set to100. Theproportion ofidle CS channelsis lower than"CHIDLLOWTHR". Thenumber of MSscarried on aPDCH is smallerthan DownlinkMultiplexThreshold ofDynamicChannelConversion/10.If Abis or DSPresources areinsufficient, theresources ofother cells canbe preemptedonly when thecell load ishigher thanDownlinkMultiplexThreshold ofDynamicChannelConversion/10,and theresources andchannels can bereleased onlywhen the cellload is lowerthan DownlinkMultiplexThreshold ofDynamicChannelConversion/10.



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To implementtimely dynamicchannelconversion andreduce channelmultiplexing,you are advisedto set"DWNDYNCHNTRANLEV"to a valuesmaller than"PDCHUPLEV".GUI ValueRange:10~80Unit:NoneActual ValueRange:10~80Default Value:40



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DWNDYNCHNTRANLEV




Meaning:Dynamic PDCHapplication andrelease policywhen the cellload changesThe BSCtriggers adynamic PDCHapplication if"CHIDLHIGHTHR" is set to 100and the numberof users carriedon the existingPDCHs exceedthe value of thisparameterdivided by 10.The BSCtriggers adynamic PDCHapplicationwhen theavailablebandwidth onPDCHs is lessthan the value of"PDCHGBR" inthe "SETBTSOTHPARA" command, theproportion ofidle TCHs isgreater than thevalue of"CHIDLHIGHTHR", and thenumber of userscarried on thePDCHs exceedsthe value of thisparameterdivided by 10. Adynamicchannel releaseis triggeredwhen thefollowing



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conditions aremet:"PSDUALTHROPTSW" is setto OFF."CHIDLHIGHTHR" is not set to100. Theproportion ofidle CS channelsis lower than"CHIDLLOWTHR". Thenumber of MSscarried on aPDCH is smallerthan DownlinkMultiplexThreshold ofDynamicChannelConversion/10.If Abis orGUPPSsubsystemresources areinsufficient, theresources ofother cells canbe preemptedonly when thecell load ishigher thanDownlinkMultiplexThreshold ofDynamicChannelConversion/10,and theresources andchannels can bereleased onlywhen the cellload is lowerthan DownlinkMultiplexThreshold ofDynamic



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ChannelConversion/10.To implementtimely dynamicchannelconversion andreduce channelmultiplexing,you are advisedto set"DWNDYNCHNTRANLEV"to a valuesmaller than"PDCHUPLEV".GUI ValueRange:10~80Unit:NoneActual ValueRange:10~80Default Value:40



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IMPDCHMULTIPLEXWEIGHT

BSC6900 SETGCELLPSDIFFSERVICE

GBFD-511603 IM ServiceEfficiencyImprovement

Meaning:PDCHmultiplexingweight for IMservices. Theload in a cell iscalculated asfollows:(Averagenumber of MSsprocessing IMservicesmultiplexed onall PDCHs x IMPDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessing webbrowsingservicesmultiplexed onall PDCHs xWeb BrowsingPDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessingemail servicesmultiplexed onall PDCHs xEmail PDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessingstreaming mediaservicesmultiplexed onall PDCHs xStreamingMedia PDCHMultiplexingWeight/100) +(Averagenumber of MSs



30



processing P2Pservicesmultiplexed onall PDCHs x P2PPDCHMultiplexingWeight/100) +Average numberof MSsprocessing otherservicesmultiplexed onall PDCHs.GUI ValueRange:10~100Unit:NoneActual ValueRange:10~100Default Value:100



31



IMPDCHMULTIPLEXWEIGHT


GBFD-511603 IM ServiceEfficiencyImprovement

Meaning:PDCHmultiplexingweight for IMservices. Theload in a cell iscalculated asfollows:(Averagenumber of MSsprocessing IMservicesmultiplexed onall PDCHs x IMPDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessing webbrowsingservicesmultiplexed onall PDCHs xWeb BrowsingPDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessingemail servicesmultiplexed onall PDCHs xEmail PDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessingstreaming mediaservicesmultiplexed onall PDCHs xStreamingMedia PDCHMultiplexingWeight/100) +(Averagenumber of MSs



32






33



WEBPDCHMULTIPLEXWEIGHT


GBFD-511604 Web BrowsingServiceEfficiencyImprovement

Meaning:PDCHmultiplexingweight for webbrowsingservices. Theload in a cell iscalculated asfollows:(Averagenumber of MSsprocessing IMservicesmultiplexed onall PDCHs x IMPDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessing webbrowsingservicesmultiplexed onall PDCHs xWeb BrowsingPDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessingemail servicesmultiplexed onall PDCHs xEmail PDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessingstreaming mediaservicesmultiplexed onall PDCHs xStreamingMedia PDCHMultiplexingWeight/100) +(Average



34



number of MSsprocessing P2Pservicesmultiplexed onall PDCHs x P2PPDCHMultiplexingWeight/100) +Average numberof MSsprocessing otherservicesmultiplexed onall PDCHs.GUI ValueRange:10~100Unit:NoneActual ValueRange:10~100Default Value:100



35



WEBPDCHMULTIPLEXWEIGHT


GBFD-511604 Web BrowsingServiceEfficiencyImprovement

Meaning:PDCHmultiplexingweight for webbrowsingservices. Theload in a cell iscalculated asfollows:(Averagenumber of MSsprocessing IMservicesmultiplexed onall PDCHs x IMPDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessing webbrowsingservicesmultiplexed onall PDCHs xWeb BrowsingPDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessingemail servicesmultiplexed onall PDCHs xEmail PDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessingstreaming mediaservicesmultiplexed onall PDCHs xStreamingMedia PDCHMultiplexingWeight/100) +(Average



36






37



EMAILPDCHMULTIPLEXWEIGHT


GBFD-511605 Email ServiceEfficiencyImprovement

Meaning:PDCHmultiplexingweight for emailservices. Theload in a cell iscalculated asfollows:(Averagenumber of MSsprocessing IMservicesmultiplexed onall PDCHs x IMPDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessing webbrowsingservicesmultiplexed onall PDCHs xWeb BrowsingPDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessingemail servicesmultiplexed onall PDCHs xEmail PDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessingstreaming mediaservicesmultiplexed onall PDCHs xStreamingMedia PDCHMultiplexingWeight/100) +(Averagenumber of MSs



38






39



EMAILPDCHMULTIPLEXWEIGHT


GBFD-511605 Email ServiceEfficiencyImprovement

Meaning:PDCHmultiplexingweight for emailservices. Theload in a cell iscalculated asfollows:(Averagenumber of MSsprocessing IMservicesmultiplexed onall PDCHs x IMPDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessing webbrowsingservicesmultiplexed onall PDCHs xWeb BrowsingPDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessingemail servicesmultiplexed onall PDCHs xEmail PDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessingstreaming mediaservicesmultiplexed onall PDCHs xStreamingMedia PDCHMultiplexingWeight/100) +(Averagenumber of MSs



40






41



STREAMPDCHMULTIPLEXWEIGHT


GBFD-511606 StreamingMedia ServiceResourceBalancing

Meaning:PDCHmultiplexingweight forstreaming mediaservices. Theload in a cell iscalculated asfollows:(Averagenumber of MSsprocessing IMservicesmultiplexed onall PDCHs x IMPDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessing webbrowsingservicesmultiplexed onall PDCHs xWeb BrowsingPDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessingemail servicesmultiplexed onall PDCHs xEmail PDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessingstreaming mediaservicesmultiplexed onall PDCHs xStreamingMedia PDCHMultiplexingWeight/100) +(Average



42






43



STREAMPDCHMULTIPLEXWEIGHT


GBFD-511606 StreamingMedia ServiceResourceBalancing

Meaning:PDCHmultiplexingweight forstreaming mediaservices. Theload in a cell iscalculated asfollows:(Averagenumber of MSsprocessing IMservicesmultiplexed onall PDCHs x IMPDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessing webbrowsingservicesmultiplexed onall PDCHs xWeb BrowsingPDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessingemail servicesmultiplexed onall PDCHs xEmail PDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessingstreaming mediaservicesmultiplexed onall PDCHs xStreamingMedia PDCHMultiplexingWeight/100) +(Average



44






45



P2PPDCHMULTIPLEXWEIGHT


GBFD-511607 P2P ResourceBalancing

Meaning:PDCHmultiplexingweight for P2Pservices. Theload in a cell iscalculated asfollows:(Averagenumber of MSsprocessing IMservicesmultiplexed onall PDCHs x IMPDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessing webbrowsingservicesmultiplexed onall PDCHs xWeb BrowsingPDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessingemail servicesmultiplexed onall PDCHs xEmail PDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessingstreaming mediaservicesmultiplexed onall PDCHs xStreamingMedia PDCHMultiplexingWeight/100) +(Averagenumber of MSs



46






47



P2PPDCHMULTIPLEXWEIGHT


GBFD-511607 P2P ResourceBalancing

Meaning:PDCHmultiplexingweight for P2Pservices. Theload in a cell iscalculated asfollows:(Averagenumber of MSsprocessing IMservicesmultiplexed onall PDCHs x IMPDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessing webbrowsingservicesmultiplexed onall PDCHs xWeb BrowsingPDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessingemail servicesmultiplexed onall PDCHs xEmail PDCHMultiplexingWeight/100) +(Averagenumber of MSsprocessingstreaming mediaservicesmultiplexed onall PDCHs xStreamingMedia PDCHMultiplexingWeight/100) +(Averagenumber of MSs



48






49

8 Counters

Table 8-1 Counter description

Counter ID Counter Name CounterDescription

NE Feature ID Feature Name

1282432035 UPLINK.GPRS.TRAN.TBF.NUM.ON.GPRS.PDCH

R9396:Numberof ConcurrentUplink GPRSTBFs inTransfer Modeon GPRS PDCH

BSC6910 GBFD-119407 Active TBFAllocation

1282432036 DOWNLINK.GPRS.TRAN.TBF.NUM.ON.GPRS.PDCH

R9397:Numberof ConcurrentDownlinkGPRS TBFs inTransfer Modeon GPRS PDCH


1282432037 UPLINK.GPRS.TRAN.TBF.NUM.ON.EGPRS.PDCH

R9398:Numberof ConcurrentUplink GPRSTBFs inTransfer Modeon EGPRSPDCH


1282432038 DOWNLINK.GPRS.TRAN.TBF.NUM.ON.EGPRS.PDCH

R9399:Numberof ConcurrentDownlinkGPRS TBFs inTransfer Modeon EGPRSPDCH


GSM BSSActive TBF Allocation Feature Parameter Description 8 Counters


50



1282432039 UPLINK.EGPRS.TRAN.TBF.NUM.ON.EGPRS.PDCH

R9400:Numberof ConcurrentUplink EGPRSTBFs inTransfer Modeon EGPRSPDCH


1282432040 DOWNLINK.EGPRS.TRAN.TBF.NUM.ON.EGPRS.PDCH

R9400A:Number of ConcurrentDownlinkEGPRS TBFs inTransfer Modeon EGPRSPDCH


1282432035 UPLINK.GPRS.TRAN.TBF.NUM.ON.GPRS.PDCH

R9396:Numberof ConcurrentUplink GPRSTBFs inTransfer Modeon GPRS PDCH


1282432036 DOWNLINK.GPRS.TRAN.TBF.NUM.ON.GPRS.PDCH

R9397:Numberof ConcurrentDownlinkGPRS TBFs inTransfer Modeon GPRS PDCH


1282432037 UPLINK.GPRS.TRAN.TBF.NUM.ON.EGPRS.PDCH

R9398:Numberof ConcurrentUplink GPRSTBFs inTransfer Modeon EGPRSPDCH


1282432038 DOWNLINK.GPRS.TRAN.TBF.NUM.ON.EGPRS.PDCH

R9399:Numberof ConcurrentDownlinkGPRS TBFs inTransfer Modeon EGPRSPDCH




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1282432039 UPLINK.EGPRS.TRAN.TBF.NUM.ON.EGPRS.PDCH

R9400:Numberof ConcurrentUplink EGPRSTBFs inTransfer Modeon EGPRSPDCH


1282432040 DOWNLINK.EGPRS.TRAN.TBF.NUM.ON.EGPRS.PDCH

R9400A:Number of ConcurrentDownlinkEGPRS TBFs inTransfer Modeon EGPRSPDCH




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9 Glossary

For the acronyms, abbreviations, terms, and definitions, see Glossary.

GSM BSSActive TBF Allocation Feature Parameter Description 9 Glossary


53

10 Reference Documents

1. 3GPP TS 44060: "Mobile Station (MS) - Base Station System (BSS) interface; Radio LinkControl/Medium Access Control (RLC/MAC) protocol"

2. 3GPP TS 44018: "Base Station System (BSS) - Serving GPRS Support Node (SGSN); BSSGPRS Protocol (BSSGP)"

3. 3GPP TS 45002: "Radio Access Network; Multiplexing and multiple access on the radiopath"

4. 3GPP TS 24.008, 3GPP TS 48.018, and 3GPP TS 48.016 peer layer protocols between theBSS and the SGSN

GSM BSSActive TBF Allocation Feature Parameter Description 10 Reference Documents


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active atbf allocation(gbss15.0_01)

Documents

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