0 flex abis for huawei gsm 2

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Flex AbisGBSS12.0

Feature Parameter Description

Issue 01

Date 2010-06-30

HUAWEI TECHNOLOGIES CO., LTD.


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Copyright Huawei Technologies Co., Ltd. 2011. All rights reserved.

No part of this document may be reproduced or transmitted in any form or by any means without prior

written consent of Huawei Technologies Co., Ltd.

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and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.

All other trademarks and trade names mentioned in this document are the property of their respective

holders.

Notice

The purchased products, services and features are stipulated by the contract made between Huawei and

the customer. All or part of the products, services and features described in this document may not be

within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements,

information, and recommendations in this document are provided "AS IS" without warranties, guarantees orrepresentations of any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in the

preparation of this document to ensure accuracy of the contents, but all statements, information, and

recommendations in this document do not constitute the 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]
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Flex Abis Contents

Issue 01 (2010-06-30) Huawei Proprietary and Confidential

Copyright Huawei Technologies Co., Ltd

i

Contents

1 Introduction ................................................................................................................................ 1-1

1.1 Scope ............................................................................................................................................ 1-1

1.2 Intended Audience ........................................................................................................................ 1-1

1.3 Change History .............................................................................................................................. 1-1

2 Overview of Flex Abis .............................................................................................................. 2-1

3 Technical Description .............................................................................................................. 3-1

3.1 About This Chapter ........................................................................................................................ 3-1

3.1 Networking Configuration .............................................................................................................. 3-2

3.2 Establishment of Transmission Link .............................................................................................. 3-2

3.3 Algorithm for Half-Rate Channel Allocation Triggered by Abis Overload ...................................... 3-3

3.3.1 Abis Timeslot Allocation for the TCH .................................................................................... 3-3

3.3.2 Abis Timeslot Allocation for the PDCH ................................................................................. 3-4

3.3.3 Abis Resources of the PS Service Preempted by the CS Service ....................................... 3-4

4 Engineering Guidelines ........................................................................................................... 4-1

4.1 Configuration of the Cascaded BTSs ............................................................................................ 4-1

4.2 Configuration of BTS combined cabinets and cabinet groups ...................................................... 4-1

4.3 Other Suggestions on the Configuration ....................................................................................... 4-1

5 Parameters ................................................................................................................................. 5-1

6 Counters ...................................................................................................................................... 6-1

7 Glossary ...................................................................................................................................... 7-1

8 Reference Documents ............................................................................................................. 8-1


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Flex Abis 1 Introduction



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1 Introduction

1.1 Scope

This document describes the Flex Abis networking, establishment of Abis transmission links, andalgorithm for half-rate channel allocation triggered by Abis overload. (GBFD-117301 Flex Abis)

1.2 Intended Audience

This document is intended for:

Personnel who need to understand Flex Abis

Personnel who work with Huawei products

1.3 Change History

This section provides information on the changes in different document versions.

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

Feature change: refers to the change in the Flex Abis feature of a specific product version.

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

Document Issues

The document issues are as follows:

01 (2010-06-30)

Draft (2010-03-30)

01 (2010-06-30)

This is the first release of GBSS12.0.

Compared with issue draft (2010-03-30) of GBSS12.0, issue 01 (2010-06-30) of GBSS12.0 incorporatesthe changes described in the following table.

ChangeType

Change Description Parameter Change

Featurechange

None. None.

Editorialchange

Parameters are presented in

the form of Parameter ID

instead of Parameter Name.

None.

Draft (2010-03-30)

This is the draft release of GBSS12.0.


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Flex Abis 2 Overview of Flex Abis



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2 Overview of Flex Abis

In an actual network, not all the BTSs or cells are busy and not both the PS and CS services have a hightraffic volume at a specific time. Generally, if the load of one BTS is heavy, the load of other BTSs is light;

if the traffic volume of the PS service is high, that of the CS service is low, and vice versa. Flex Abis(Flexible Abis) enables the sharing of the Abis interface transmission resources among different BTSs,cells, and services, and thus improves the resource utilization. Flex Abis is a mode of allocating the Abisinterface transmission resources. That is, the Abis interface transmission resources form a resource poolthat is shared by the CS service and PS service (including idle timeslots) among different cells andBTSs.

The Abis interface transmission resources can be used more effectively when Flex Abis applies to thefollowing cases:

Multi-cell large-capacity BTSs

Cascaded BTSs

EGPRS capable cells


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Flex Abis 3 Technical Description



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3 Technical Description

3.1 About This Chapter

The transmission resources over the Abis interface can be allocated either fixedly or dynamically.

Fixed allocation mode

In fixed allocation mode, the channels over the Um interface (including the TCH and static PDCH) arealways mapped with the Abis interface transmission resources. That is, the Abis interface transmissionresources are occupied even when the Um interface channels are idle.

Dynamic allocation mode

In dynamic allocation mode, the Abis interface transmission resources form a pool. The Abis interfacetransmission resources are allocated to the Um interface channels only when the channels areoccupied. Thus, the Um interface channel resources can be much more abundant than the Abisinterface transmission resources, and the Abis interface transmission resources can be fully utilized in

different time slices. Flex Abis features the dynamic allocation of Abis interface transmission resources,which improves the utilization of the resources, as shown inFigure 3-1.

Figure 3-1 Working principle of Flex Abis

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The Flex Abis resource pool consists of all the Abis interface transmission resources, excluding the staticPDCH, semipermanent connection timeslots, monitoring timeslots, signaling link timeslots, Abistransmission timeslots in fixed allocation mode, and idle timeslots. The Flex Abis resource pool is shared

by the CS service and PS service (including the idle timeslots) among different cells and BTSs.


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The timeslots in the Flex Abis resource pool are allocated to the TCH and PDCH. The full-rate TCH andPDCH are allocated 16 kbit/s timeslots; whereas the half-rate TCH is allocated the 8 kbit/s timeslot. Fordetails, see Channel Management Parameter Description and GPRS/EGPRS Channel ManagementParameter Description. When the transmission resources are insufficient, the CS service can preemptthe timeslots of the PS service.

You are advised to enable Flex Abis in the following scenarios to make better use of the Abis interfacetransmission resources.

Transmission resources are limited, and the rent for them is very high, for example, in satellitetransmission mode.

The traffic volume in actual situation is far lower than that in the channel resource planning.

The cells that share Abis interface transmission resources have different traffic peak hours.

The proportion of PS service users in the cell is high.

3.1 Networking Configuration

The BSC supports the networking mode of multi-level Flex Abis resource pools among cascaded BTSs.

As shown inFigure 3-2,Link1, Link2, and Link3 correspond to the Abis interface transmission linksbetween the BSC and BTS0, between BTS0 and BTS1, and between BTS1 and BTS2 respectively. Thetransmission over the Abis interface is realized through satellite or one or more E1/T1 cables.

The transmission resources on each Abis interface transmission link form a resource pool for the CSservice and PS service to share.

The transmission resources on Link1 form Pool0.

The resources in Pool0 can be shared by the CS service and PS service on BTS0, BTS1, and BTS2.

The transmission resources on Link2 form Pool1.

The resources in Pool1 can be shared by the CS service and PS service on BTS1 and BTS2. The transmission resources on Link3 form Pool2.

The resources in Pool2 can be shared by the CS service and PS service on BTS2.

Figure 3-2 Flex Abis network topology

Link 1 Link2 Link 3

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3.2 Establishment of Transmission Link

If Flex Abis is enabled, the BSC must allocate the Abis interface transmission resources and establish atransmission link between the BSC and the BTS.

When a channel on BTS2 is allocated, the BSC must dynamically allocate the Abis interfacetransmission resources to Link1, Link2, and Link3 for the channel, and instruct BTS0, BTS1, and BTS2


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3-3

to establish transmission links for the channel, as shown inFigure 3-3.Therefore, the ExtendedSignaling Link (ESL) must be configured for each Flex Abis capable BTS to carry the signaling. In 64kbit/s multiplexing mode, the ESL and Operation and Maintenance Link (OML) must be physicallymultiplexed on the same 64 kbit/s E1 timeslot. To increase the number of ESLs, you are advised toreduce the number of Radio Signaling Links (RSLs) multiplexed with the OML to two by setting the

parameter MPMODE.

Figure 3-3 Working principle of Flex Abis

The configuration principles of MPMODEare as follows:

Generally, the parameter MPMODEis set to 4:1. When Flex Abis is enabled, the parameter MPMODEcan be set to 5:1or 6:1to multiplex five or six RSLs onto one 64 kbit/s timeslot without occupyinganother 64 kbit/s timeslot.

During the initial configuration of a BTS, set FLEXABISMODEto FLEX_ABIS(Flex Abis)orSEMI_ABIS(Semisolid Abis)to enable Flex Abis.

After the BTS configuration is complete, set FLEXABISMODEto FLEX_ABIS(Flex Abis)orSEMI_ABIS(Semisolid Abis)to enable Flex Abis, if required.

3.3 Algorithm for Half-Rate Channel Allocation Triggered byAbis Overload

3.3.1 Abis Timeslot Allocation for the TCH

Generally, the resources in the Flex Abis resource pool are allocated to the TCH according to its type.The allocation principles are as follows:

For a full-rate TCH, the 16 kbit/s Abis timeslot is allocated.

For a half-rate TCH, the 8 kbit/s Abis timeslot is allocated.


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After Flex Abis is enabled, the Abis interface may experience insufficiency in transmission resourcesprior to the Um interface. In such a case, the half-rate channel allocation is triggered according to theload of the Abis interface transmission resources to increase the success rate of access.

When the proportion of the remaining Abis resources to the total Abis resources is smaller than

TDMCONGTH, the system allocates half-rate channels to newly-accessed MSs if PSDOWN(PSDownspeeding)load control is applied. If CSFHHO(CS TCHF-TCHH HO)load control is applied, thesystem hands the MSs on the full-rate channels over onto the half-rate channels. In this manner, moreMSs can gain access to the network, thus increasing usage efficiency of transmission resources.

When the Abis resource usage drops below the congestion threshold, the system stops PSDOWN(PSDownspeeding)and CSFHHO(CS TCHF-TCHH HO)load control.

Congestion threshold is set for controlling usage of the transmission bandwidth. When the threshold is reached, thefollowing methods of load control can be applied.

PSDOWN(PS Downspeeding): PS service rate decrease

CSPH(CS Preference TCHH): Allocation of half-rate channels to newly-accessed MSs requesting CS services

AMRC(AMRC): Limited AMR rate for MSs in CS services

CSFHHO(CS TCHF-TCHH HO): Handover of MSs in CS services from the full-rate channel to the half-rate channel

The execution sequence of PSDOWN(PS Downspeeding), AMRC(AMRC), CSPH(CS Preference TCHH), andCSFHHO(CS TCHF-TCHH HO)is specified by the parameters LDRFST, LDRSND, LSRTRD, and LDRFOUH.

When all the Abis interface transmission resources are occupied, the new CS service can preempt theAbis interface transmission resources of the PS service. For details, seeAbis Resources of the PSService Preempted by the CS Service.

3.3.2 Abis Timeslot Allocation for the PDCH

After Flex Abis is enabled, the transmission resources of the PS service are allocated in the following

ways to improve the utilization of transmission resources:

The BSC allocates a primary link on a per 16 kbit/s sub-timeslot basis.

The BSC dynamically allocates secondary links in steps of 16 kbit/s according to the required codingrate of the Um interface.

After Flex Abis is enabled, the Abis interface transmission resources can be dynamically allocated without configuring thestatic PDTCH and TSCOUNTif the actual traffic volume is far lower than the estimated value in network planning. That is,the primary link and secondary link are dynamically allocated to the PS service.

If the traffic volume of the PS service remains low, the configuration of static PDTCH and TSCOUNTisnot required. When the CS traffic is heavy, all Abis interface transmission resources may be occupied. In

this case, no Abis resource is available for the subsequent PS service. Therefore, when the CS traffic isheavy, some static PDTCHs should be reserved. In addition, the parameter TSCOUNTshould beconfigured to preserve dedicated timeslots for the PS service so that the GPRS or EGPRS service canstill be normally processed.

3.3.3 Abis Resources of the PS Service Preempted by the CSService

The CS service and PS service share the Abis interface transmission resources. The CS service canpreempt the resources of PS service on the secondary link (or even the primary link when necessary) inthe same-level and lower-level BTSs.


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In built-in PCU configuration mode, you are advised to set SUBRESPREEMPTFLGandLOWLEVSUBRESPREEMPTFLGtoYesto allow the CS service to preempt the transmission resourcesof the PS service on the secondary link in the same-level or lower-level BTSs.

In external PCU configuration mode, you are advised to set PCUPREEMPTFLAGto Supportto allow

the CS service to preempt the transmission resources of the PS service if the PCU supports theprocessing of the PREEMPT_ABIS_LINK message.


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Flex Abis 4 Engineering Guidelines



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4 Engineering Guidelines

4.1 Configuration of the Cascaded BTSs

If a cascaded BTS is expected to support Flex Abis, the parameter FLEXABISMODEof theupper-level BTS must be set to Flex Abis.

If the parameter FLEXABISMODEof a cascaded BTS is set to SemiSolid, FLEXABISMODEof allthe lower-level BTSs must be set to SemiSolid.

The master cabinet group of the level 1 BTS is connected to the EIUa only through the E1 port of themaster cabinet group. The slave cabinet group of the level 1 BTS is cascaded to the EIUa through theinternal connections of the master cabinet group or is directly connected to the EIUa through the E1port of the slave cabinet group.

The BTSs are cascaded only through the E1 ports of the master cabinet group. The slave cabinetgroup is cascaded with the upper-level BTS only through the master cabinet group. The slave cabinetgroups in the same BTS cannot be cascaded.

Each BTS is cascaded with only one upper-level BTS. One BTS cannot be connected to anupper-level BTS and a EIUa at the same time.

4.2 Configuration of BTS combined cabinets and cabinetgroups

For the combined cabinets or cabinet groups of the double-transceiver BTS and the BTS that does notsupport Flex Abis, the suggestions on the configuration are as follows:

The parameter FLEXABISMODEof the Abis interface between the double-transceiver BTS and theBTS that does not support Flex Abis or between the two BTSs that do not support Flex Abis should beset to Fix Abis.

The parameter FLEXABISMODEof the Abis interface between the double-transceiver BTS and theBSC or between the double-transceiver BTSs should be set to Flex Abisor SemiSolid.

4.3 Other Suggestions on the Configuration

For a Flex Abis enabled BTS, certain timeslots except the permanently allocated timeslots (such assignaling timeslots and monitoring timeslots) on E1 links can be disabled. These disabled timeslots canbe used in other transmission modes (such as satellite transmission) or in scenarios where only a fewtimeslots on an E1 link can be used.


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Flex Abis 5 Parameters



5-1

5 Parameters

Table 5-1 Parameters Description

ParameterID NE MML Description

MPMODE BSC6900 ADDBTS(Optional)MODBTS(Optional)

Meaning: Timeslot multiplexing mode at the Abisinterface of the BTS. The BTS supports two multiplexingmodes: statistical multiplexing on a 64 kbit/s timeslotand physical multiplexing on a 16 kbit/s timeslot. Thefirst mode is further classified into the following sixtypes: 1:1, 2:1, 3:1, 4:1, 5:1, and 6:1.

A BTS supports the following six types of timeslotobjects:OML: operation and maintenance link of the BTS. Each

BTS has only one OML. In the case of statisticalmultiplexing on a 64 kbit/s timeslot, the OML works at64 kbit/s. In this case, the OML can be multiplexed onlywith the signaling links in the same cabinet group of theBTS. In the case of physical multiplexing on a 16 kbit/stimeslot, the OML works at 16 kbit/s. In this case, theOML uses a 16 kbit/s timeslot.ESL: extended signaling link of the BTS. If the BTSsupports Flex Abis, in the case of statistical multiplexingon a 64 kbit/s timeslot, a 64 kbit/s timeslot needs to beassigned to the ESL. In this case, the ESL is alwaysmultiplexed with the OML in the 64 kbit/s timeslot. In the

case of physical multiplexing on a 16 kbit/s timeslot, notimeslot is assigned to the ESL. In this case, the ESLshares the same timeslot with the OML.RSL: radio signaling layer link in each TRX. Each TRXhas one RSL link. In the case of statistical multiplexingon a 64 kbit/s timeslot, the RSL link works at 64kbit/s. Inthis case, the RSL link can be multiplexed only with thesignaling links in the same cabinet group of the BTS. Inthe case of physical multiplexing on a 16 kbit/s timeslot,the RSL link works at 16 kbit/s. In this case, the RSL linkuses a 16 kbit/s timeslot exclusively.TCH: traffic channels in each TRX. The TCH works at16 kbit/s.Idle: idle timeslots of the BTS. An idle timeslot works at16 kbit/s. In the case of statistical multiplexing on a 64kibt/s timeslot, the idle timeslots can be multiplexed onlywith the TCHs in the same cabinet group onto one 64kbit/s timeslot.Semi: monitoring timeslots of the BTS. The monitoringtimeslots work at 8 kbit/s, 16 kbit/s, 32 kbit/s, and 64kbit/s. The monitoring timeslots can be multiplexed onlywith semi-permanent links.A 2048 Mbit/s E1 contains thirty-two 64 kbit/stimeslots. Timeslot 0 is reserved for synchronization andcannot be assigned.

Statistical multiplexing means that signaling timeslots


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are time-division multiplexed in an E1 timeslot, such asthe OML and RSL timeslots or the RSL timeslots. Forexample, in the case of 4:1 multiplexing, one 64 kbit/stimeslot multiplexes one OML and three RSL links orfour RSL links of the BTS. The 64 kbit/s timeslot that

multiplexes the OML has a multiplexing ratio of up to 4:1even if the multiplexing ratio exceeds 4:1.

HDLC and IP BTS do not support this parameter.

GUI Value Range: MODE1_1, MODE2_1, MODE3_1,MODE4_1, MODE5_1, MODE6_1, MODE16KActual Value Range: MODE1_1, MODE2_1, MODE3_1,MODE4_1, MODE5_1, MODE6_1, MODE16KUnit: NoneDefault Value: MODE4_1

FLEXABISMODE BSC6900 ADDBTS(Optional)MODBTS(Optional)

Meaning: Service timeslot assignment mode for theBTS. If this parameter is set to FIX_16K_ABIS, theBSC6900 assigns a fixed Abis transmission timeslot toa TCH. If this parameter is set to FLEX_ABIS, theBSC6900 assigns an Abis transmission timeslotdynamically to a TCH (except the static PDCH) toincrease the resource utilization. If this parameter is setto SEMI_ABIS, the BTS to which a TCH belongsassigns a fixed Abis transmission timeslot to the TCHwhile the upper-level BTS set to FLEX_ABIS assigns anAbis transmission timeslot dynamically to the TCH. Thismode applies where old and new BTSs are cascaded.HDLC and IP BTS is not support this parameter.1. If the Flex Abis function is enabled on the BTS, and ifthe extension cabinet group is directly connected to theBSC6900, the Abis timeslots allocated to the extensioncabinet group are displayed as TCH, indicating fixedtimeslots. If the extension cabinet group needs toprocess data services, and if the high-rate codingschemes (CS3 and CS4; MCS3 to MCS9) are required,idle timeslots need to be configured.2. If the Flex Abis function is enabled on the BTS, and ifthe channel type is changed to static PDCH, the type ofcorresponding Abis timeslots is automatically changedto TCH, indicating fixed timeslots.

3. In the case of cascaded BTSs, if an upper-level BTSis in Flex Abis mode, and if a lower-level BTS is inSemiSolid mode, the type of the timeslots allocated tothe lower BTS is displayed as TCH, indicating fixedtimeslots, but the timeslot type that the upper-level BTSreports to the BSC is displayed as Flex.If the lower-levelBTS needs to process data services, and if the high-ratecoding schemes (CS3 and CS4; MCS3 to MCS9) arerequired, idle timeslots need to be configured.

GUI Value Range: FIX_16K_ABIS(Fix Abis),FLEX_ABIS(Flex Abis), SEMI_ABIS(Semisolid Abis)

Actual Value Range: FIX_16K_ABIS, FLEX_ABIS,


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SEMI_ABISUnit: NoneDefault Value: FIX_16K_ABIS

LDRFST BSC6900 SET

LDR(Optional)

Meaning: First action taken for load control

GUI Value Range: CLOSE(Close), PSDOWN(PSDownspeeding), AMRC(AMRC), CSPH(CS PreferenceTCHH), CSFHHO(CS TCHF-TCHH HO)Actual Value Range: CLOSE, PSDOWN, AMRC,CSPH, CSFHHOUnit: NoneDefault Value: PSDOWN

LDRSND BSC6900 SETLDR(Optional)

Meaning: Second action taken for load control

GUI Value Range: CLOSE(Close), PSDOWN(PSDownspeeding), AMRC(AMRC), CSPH(CS PreferenceTCHH), CSFHHO(CS TCHF-TCHH HO)Actual Value Range: CLOSE, PSDOWN, AMRC,CSPH, CSFHHOUnit: NoneDefault Value: AMRC

LSRTRD BSC6900 SETLDR(Optional)

Meaning: Third action taken for load control

GUI Value Range: CLOSE(Close), PSDOWN(PSDownspeeding), AMRC(AMRC), CSPH(CS PreferenceTCHH), CSFHHO(CS TCHF-TCHH HO)Actual Value Range: CLOSE, PSDOWN, AMRC,

CSPH, CSFHHOUnit: NoneDefault Value: CSPH

LDRFOUH BSC6900 SETLDR(Optional)

Meaning: Fourth action taken for load control

GUI Value Range: CLOSE(Close), PSDOWN(PSDownspeeding), AMRC(AMRC), CSPH(CS PreferenceTCHH), CSFHHO(CS TCHF-TCHH HO)Actual Value Range: CLOSE, PSDOWN, AMRC,CSPH, CSFHHOUnit: NoneDefault Value: CSFHHO

TSCOUNT BSC6900 SETBTSIDLETS(Mandatory)

Meaning: Number of idle timeslots. You can configureup to 128 idle timeslots for the BTS at a time. A BTS canbe configured with up to 512 idle timeslots.

GUI Value Range: 0~512Actual Value Range: 0~512Unit: NoneDefault Value: None

SUBRESPREEMPTFLG

BSC6900 SETBTSFLEXABISPARA(O

Meaning: Whether to allow the CS services to preemptthe sublink resources of PS services when the Abisresources are congested. In the current version, thisparameter supports configuration consistency and


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ptional) configuration delivery; however, this parameter is notused in any function. This parameter will be removedfrom later versions. Thus, it is recommended not toconfigure it in this version.

GUI Value Range: NO(NO), YES(YES)Actual Value Range: NO, YESUnit: NoneDefault Value: NO

SUBRESPREEMPTFLG

BSC6900 SETGCELLSOFT(Optional)

Meaning: This parameter specifies whether the CSservices preempt the sublink resources of PS services.In the current version, this parameter supportsconfiguration consistency and configuration delivery;however, this parameter is not used in any function.This parameter will be removed from later versions.Thus, it is recommended not to configure it in this

version.

GUI Value Range: NO(No), YES(Yes)Actual Value Range: NO, YESUnit: NoneDefault Value: NO

LOWLEVSUBRESPREEMPTFLG

BSC6900 SETBTSFLEXABISPARA(Optional)

Meaning: The CS services are preferred. Thisparameter indicates that the CS services are permittedto preempt the dynamic Abis resources on the sublink ofthe current level site. In the current version, thisparameter supports configuration consistency andconfiguration delivery; however, this parameter is not

used in any function. This parameter will be removedfrom later versions. Thus, it is recommended not toconfigure it in this version.

GUI Value Range: NO(NO), YES(YES)Actual Value Range: NO, YESUnit: NoneDefault Value: NO

LOWLEVSUBRESPREEMPTFLG

BSC6900 SETGCELLSOFT(Optional)

Meaning: Whether to permit the preemption oflower-level sublink resources. If the value of thisparameter is YES, a CS domain service can preempt

the sublink resources of the PS domain services on thelower-level BTS of the cascaded BTSs when the CSdomain service fails to preempt the sublink of thecorresponding level. In the current version, thisparameter supports configuration consistency andconfiguration delivery; however, this parameter is notused in any function. This parameter will be removedfrom later versions. Thus, it is recommended not toconfigure it in this version.

GUI Value Range: NO(No), YES(Yes)Actual Value Range: NO, YESUnit: None

Default Value: NO


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Flex Abis 6 Counters



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6 Counters

For the counters, see the BSC6900 GSM Performance Counter Reference.


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Flex Abis 7 Glossary



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7 Glossary

For the acronyms, abbreviations, terms, and definitions, see theGlossary.
http://localhost/var/www/apps/conversion/tmp/scratch_7/Glossary.htmhttp://localhost/var/www/apps/conversion/tmp/scratch_7/Glossary.htmhttp://localhost/var/www/apps/conversion/tmp/scratch_7/Glossary.htmhttp://localhost/var/www/apps/conversion/tmp/scratch_7/Glossary.htm


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Flex Abis 8 Reference Documents


C i ht H i T h l i C Ltd

8-1

8 Reference Documents

[1] BSC6900 Feature List

[2] BSC6900 Optional Feature Description

[3] GBSS Reconfiguration Guide

[4] BSC6900 GSM Parameter Reference

[5] BSC6900 GSM MML Command Reference

[6] BSC6900 GSM Performance Counter Reference