BSS Paging Coordination(GBSS15.0_01)

GSM BSS GBSS15.0

BSS Paging Coordination Feature Parameter Description Issue

01

Date

2013-05-06

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2014. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd.

Trademarks and Permissions and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd. All other trademarks and trade names mentioned in this document are the property of their respective holders.

Notice The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS" without warranties, guarantees or representations 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 a warranty of any kind, express or implied.

Huawei Technologies Co., Ltd. Address:

Huawei Industrial Base Bantian, Longgang Shenzhen 518129 People's Republic of China

Website:

http://www.huawei.com

Email:

[email protected]

Issue 01 (2013-05-06)

Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

i

GSM BSS BSS Paging Coordination Feature Parameter Description

Contents

Contents 1 About This Document..................................................................................................................1 1.1 Scope..............................................................................................................................................................................1 1.2 Intended Audience..........................................................................................................................................................1 1.3 Change History...............................................................................................................................................................1

2 Overview.........................................................................................................................................3 2.1 Introduction....................................................................................................................................................................3 2.2 Benefits...........................................................................................................................................................................3 2.3 NEs Supporting the Feature............................................................................................................................................3

3 Technical Description...................................................................................................................5 3.1 Concepts.........................................................................................................................................................................6 3.1.1 MS Operation Mode....................................................................................................................................................6 3.1.2 Network Operation Mode............................................................................................................................................6 3.2 Working Principles.........................................................................................................................................................7

4 Related Features.............................................................................................................................9 5 Network Impact...........................................................................................................................10 5.1 System Capacity...........................................................................................................................................................10 5.2 Network Performance...................................................................................................................................................10

6 Engineering Guidelines.............................................................................................................11 6.1 When to Use BSS Paging Coordination.......................................................................................................................11 6.2 Deploying BSS Paging Coordination...........................................................................................................................11 6.2.1 Deployment Requirements........................................................................................................................................11 6.2.2 Activation..................................................................................................................................................................12 6.2.3 Activation Observation..............................................................................................................................................13 6.2.4 Deactivation...............................................................................................................................................................13 6.3 Performance Monitoring...............................................................................................................................................14

7 Parameters.....................................................................................................................................15 8 Counters........................................................................................................................................21 9 Glossary.........................................................................................................................................22

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Contents

10 Reference Documents...............................................................................................................23

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1

1 About This Document

About This Document

1.1 Scope This document describes GBFD-119305 BSS Paging Coordination, including its technical principles, related features, network impact, and engineering guidelines.

1.2 Intended Audience This document is intended for personnel who: l

Need to understand the features described herein

l

Work with Huawei products

1.3 Change History This section provides information about the changes in different document versions. There are two types of changes, which are defined as follows: l

Feature change Changes in features of a specific product version

l

Editorial change Changes in wording or addition of information that was not described in the earlier version

01 (2013-05-06) This issue does not include any changes.

Draft A (2013-02-27) Compared with Issue 01 (2011-04-28) of GBSS14.0, Draft A (2013-02-27) of GBSS15.0 includes the following changes. Issue 01 (2013-05-06)


1


1 About This Document

Change Type

Change Description

Parameter Change

Feature change

l Added descriptions about the BSC6910.

None

l Added descriptions about the eGBTS. l Added section "2.3 NEs Supporting the Feature." Editorial change

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None


None

2


2 Overview

2

Overview

2.1 Introduction With the BSS Paging Coordination feature, a mobile station (MS) in GPRS class A or B mode of operation can only monitor the circuit-switched (CS) paging messages over the packet associated control channel (PACCH) while working in packet transfer mode. GPRS is short for general packet radio service. The MS working in packet transfer mode cannot respond to CS paging messages over the PCH if the Gs interface is not configured between the MSC and the SGSN. This is because the base station subsystem (BSS) sends CS paging messages only over the paging channel (PCH). This feature enables the base station controller (BSC) to check whether an MS is processing packet-switched (PS) services when receiving a CS paging message from the core network over the A or Gb interface: l

If the MS is working in packet transfer mode, the BSS sends the CS paging message over the PACCH.

l

If the MS is working in packet idle mode, the BSS sends the CS paging message over the PCH.

2.2 Benefits The BSS Paging Coordination feature enables an MS working in packet transfer mode to receive CS paging messages while achieving a stable paging success rate for PS services on the network.

2.3 NEs Supporting the Feature Table 2-1 NEs supporting the feature

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Feature

BSC6900

BSC6910

GBTS

eGBTS

BSS Paging Coordination

√

√

√

√


3


2 Overview

NOTE

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

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3

3 Technical Description

Technical Description

When the Gs interface is configured between the MSC and SGSN, the BSS uses the PACCH to send CS paging messages to the MS and the MS processing PS services can respond to CS paging messages in packet transfer mode. This feature is controlled by setting the BSSPAGINGCOORDINATION (BSC6900,BSC6910) parameter.

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5



3.1 Concepts 3.1.1 MS Operation Mode The MSs working in packet transfer mode respond to CS paging messages in different ways, depending on their modes of operation. As defined in the 3rd Generation Partnership Project (3GPP) specifications, MSs have three operation modes: GPRS classes A, B, and C. For details, see 3GPP TS 44.060 Rel-4.

GPRS Class A Mode of Operation An MS can process CS and PS services at the same time and always respond to CS paging messages while working in packet transfer mode. MSs in this operation mode are classified into two types: l

One MS has two independent receivers. The MS receives CS paging messages over the PCH.

l

One MS that works in Dual Transfer Mode (DTM) has only one receiver. The MS receives CS paging messages over the PACCH and sets up a DTM connection on a DTM-enabled network. For details about DTM, see DTM Feature Parameter Description.

GPRS Class B Mode of Operation An MS can attach to the GSM and GPRS networks simultaneously but cannot process both CS and PS services at the same moment. MSs working in packet transfer mode can receive CS paging messages over the PACCH and respond to or disregard the messages. If the MSs decide to respond to the CS paging messages, they suspend GPRS services and begin to set up CS connections. After the setup is completed, the MSs continue with the GPRS services.

GPRS Class C Mode of Operation BSS Paging Coordination does not work for MSs in this operation mode because an MS cannot attach to GSM and GPRS networks at the same time.

3.1.2 Network Operation Mode The CS paging messages are sent in different ways, depending on the network operation modes used by the BSS. The 3GPP specifications also define three network operation modes: Network Operation Mode I, II, and III. For details, see 3GPP TS 23.060 Rel-4. Huawei BSS determines the network operation mode by using the NMO(BSC6900,BSC6910) parameter.

Network Operation Mode I This mode is used when the Gs interface is configured. The network sends CS and PS paging messages to a GPRS-attached MS according to the following procedure: Issue 01 (2013-05-06)


6



1.

The MSC sends a CS paging message to the SGSN over the Gs interface.

2.

The SGSN sends the CS paging message and a PS paging message to the BSS over the Gb interface.

3.

The BSS sends the CS and PS paging messages to the MS over the same logical channel.

Furthermore, the BSS sends paging messages to different types of MSs over different channels: l

For an MS in packet idle mode – If the packet broadcast control channel (PBCCH) is configured, the BSS sends CS and PS paging messages to the MS over the packet paging channel (PPCH). – If the PBCCH is not configured, the BSS sends CS and PS paging messages to the MS over the PCH.

l

For an MS in packet transfer mode The BSS sends CS paging messages to the MS over the PACCH, and the MS only needs to monitor this PACCH to receive the CS paging messages.

Network Operation Mode II This mode is used when the Gs interface is not configured. The network sends CS and PS paging messages to an MS according to the following procedure: 1.

The MSC sends a CS paging message to the BSS over the A interface.

2.

The SGSN sends a PS paging message to the BSS over the Gb interface.

3.

The BSS sends the CS and PS paging messages to the MS over the PCH.

Network Operation Mode III This mode is used when the Gs interface is not configured. The network sends CS and PS paging messages to an MS according to the following procedure: 1.

The MSC sends a CS paging message to the BSS over the A interface.

2.

The SGSN sends a PS paging message to the BSS over the Gb interface.

3.

The BSS sends a CS paging message to the MS over the PCH. If the cell is configured with the PBCCH or PCCCH, the BSS sends a PS paging message to the MS over the PPCH. If no PBCCH or PCCCH is configured, the BSS sends a PS paging message to the MS over the PCH.

3.2 Working Principles When the Gs interface is not configured between the MSC and SGSN and the BSS Paging Coordination feature is disabled, the BSS sends a CS paging message to an MS over the PCH, and only the MS that meets both of the following conditions can receive the CS paging message: l

The MS works in GPRS class A mode of operation.

l

The MS has two independent receivers.

Figure 3-1 describes the procedure for sending a CS paging message in the preceding scenario. Issue 01 (2013-05-06)


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Figure 3-1 Procedure for sending a CS paging message with BSS Paging Coordination disabled

When the Gs interface is not configured but the BSS Paging Coordination feature is enabled, the BSS sends a CS paging message to an MS over the PACCH. MSs working in both GPRS class A and class B modes of operation can receive CS paging messages over the PACCH, which increases the paging success rate. For details, see 3GPP TS 44.060 Rel-4. Figure 3-2 describes the procedure for sending a CS paging message in the preceding scenario. Figure 3-2 Procedure for sending a CS paging message with BSS Paging Coordination enabled

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4 Related Features

4

Related Features

None

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5 Network Impact

5

Network Impact

5.1 System Capacity This feature has no impact on system capacity.

5.2 Network Performance This feature increases the paging success rate but deteriorates the following performance counters in scenarios without the Gs interface: l

Number of Uplink GPRS TBF Abnormal Releases due to SUSPEND

l

Number of Downlink GPRS TBF Abnormal Releases due to SUSPEND

l

Number of Uplink EGPRS TBF Abnormal Releases due to SUSPEND

l

Number of Downlink EGPRS TBF Abnormal Releases due to SUSPEND

l

Number of Downlink GPRS Intermit Transfers

l

Number of Downlink EGPRS Intermit Transfers

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6

6 Engineering Guidelines

Engineering Guidelines

6.1 When to Use BSS Paging Coordination It is recommended that this feature be used when the Gs interface is not configured between the MSC and SGSN.

6.2 Deploying BSS Paging Coordination 6.2.1 Deployment Requirements Table 6-1 Deployment requirements

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Aspect

Requirement

Related features

None

BSC

A built-in packet control unit (PCU), PS service processing boards, and Gb interface boards have been configured.

BTS

None

GSM networking

None

MS

The MS works in GPRS class A or B mode of operation.

MSC

None

License

The license controlling this feature has been activated. For details on how to activate the license, see License Management Feature Parameter Description. For details about license items, see License Control Item Description. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

11



Aspect

Requirement

Others

None

6.2.2 Activation Using MML Commands Run the SET GCELLPSBASE command with BSS Paging Co-ordination set to YES (YES).

MML Command Examples SET GCELLPSBASE: IDTYPE=BYID, CELLID=0, BSSPAGINGCOORDINATION=YES;

Using the CME NOTE

When configuring the BSS Paging Coordination feature on the CME, you must perform a single configuration first, and then perform batch modifications if required. You must perform a single configuration for a parameter before batch modifications of the parameter. You are 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 sequence described in Table 6-2. For the method of performing the CME single configuration, see CME Single Configuration Operation Guide. Step 2 Modify objects in batches on the CME. (CME batch modification center) icon on the To modify objects, such as BSCs, BTSs, cells, and TRXs, in batches, click the CME configuration interface to start the batch modification wizard. For the method of performing batch modifications through the CME batch modification center, press F1 on the wizard interface to obtain online help. ----End Table 6-2 Configuring the parameter on the CME

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SN

Managed Object (MO)

NE

Parameter Name

Parameter ID

Configura ble in CME Batch Modificati on Center

1

GCELLPSBASE

BSC6900/ BSC6910


BSSPAGIN GCOORDI NATION

Yes


12



6.2.3 Activation Observation Step 1 Use an MS working in GPRS class A or B mode of operation to initiate PS services. Step 2 Use another MS to call the test MS. Expected result: l The call is set up and the voice quality is good. l PS services are not interrupted if the test MS works in GPRS class A mode of operation and the network supports DTM. l PS services are interrupted if the test MS works in GPRS class B mode of operation. ----End

6.2.4 Deactivation Using MML Commands Run the SET GCELLPSBASE command with BSS Paging Co-ordination set to NO(NO).

MML Command Examples SET GCELLPSBASE: IDTYPE=BYID, CELLID=0, BSSPAGINGCOORDINATION=NO;

Using the CME NOTE

When configuring the BSS Paging Coordination feature on the CME, you must perform a single configuration first, and then perform batch modifications if required. You must perform a single configuration for a parameter before batch modifications of the parameter. You are 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 sequence described in Table 6-3. For the method of performing the CME single configuration, see CME Single Configuration Operation Guide. Step 2 Modify objects in batches on the CME. (CME batch modification center) icon on the To modify objects, such as BSCs, BTSs, cells, and TRXs, in batches, click the CME configuration interface to start the batch modification wizard. For the method of performing batch modifications through the CME batch modification center, press F1 on the wizard interface to obtain online help. ----End

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Table 6-3 Configuring the parameter on the CME SN

MO

NE

Parameter Name

Parameter ID

Configura ble in CME Batch Modificati on Center

1

GCELLPSBASE

BSC6900/ BSC6910


BSSPAGIN GCOORDI NATION

Yes

6.3 Performance Monitoring When the Network Operation Mode parameter is set to NMOII(Network Operation Mode II) or NMOIII(Network Operation Mode III), the BSS Paging Coordination ratio is calculated using the following formula: BSS Paging Coordination ratio = (A9603:Number of Circuit Paging Requests Sent on PACCH)/ (A0300:Number of MSC-initiated CS paging requests) where BSS Paging Coordination ratio represents benefits gained by the BSS Paging Coordination feature. Table 6-4 lists counters related to BSS Paging Coordination. Table 6-4 Counters related to BSS Paging Coordination

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ID

Counter

Description

NE

1277869417

BSC.MSC.PAGING .REQ.CS

A0300:Number of MSC-initiated CS paging requests

BSC

1277869418

BSC.SGSN.PAGIN G.REQ.CS

A0301:Number of SGSN-initiated CS paging requests

BSC

1279171419

PACCH.CS.PAGIN G.REQ

A9603:Number of Circuit Paging Requests Sent on PACCH

BSC


14


7 Parameters

7

Parameters

Table 7-1 Parameter description Parameter ID

NE

MML Command

Feature ID

Feature Name

Description

BSSPAGINGC OORDINATI ON

BSC6900

SET GCELLPSBAS E

GBFD-119305


Meaning:Wheth er to support the paging function of the CS domain of the A interface. Yes: the MS can be called upon paging request on the A interface when handling the PS service; No: the MS cannot be called upon paging request on the A interface when handling the PS service. GUI Value Range:NO (NO), YES (YES) Unit:None Actual Value Range:NO, YES Default Value:NO(NO)

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7 Parameters

Parameter ID

NE

MML Command

Feature ID

Feature Name

Description

BSSPAGINGC OORDINATI ON

BSC6910

SET GCELLPSBAS E

GBFD-119305


Meaning:Wheth er to support the paging function of the CS domain of the A interface. Yes: the MS can be called upon paging request on the A interface when handling the PS service; No: the MS cannot be called upon paging request on the A interface when handling the PS service. GUI Value Range:NO (NO), YES (YES) Unit:None Actual Value Range:NO, YES Default Value:NO(NO)

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7 Parameters

Parameter ID

NE

MML Command

Feature ID

Feature Name

Description

NMO

BSC6900

SET GCELLPSBAS E

GBFD-119108

Network Operation Mode Support

Meaning:This parameter is related to the paging channel of the system. There are three network operation modes: network operation mode I, network operation mode II, and network operation mode III. Network operation mode I is used when the system is configured with the Gs interface. Network operation mode II is used when the system is not configured with the Gs interface and the PCCCH is not configured. Network operation mode III is used when the system is not configured with the Gs interface and the PCCCH is configured. GUI Value Range:NMOI (Network Operation Mode I), NMOII (Network Operation Mode II), NMOIII (Network

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Parameter ID

NE

MML Command

7 Parameters

Feature ID

Feature Name

Description Operation Mode III) Unit:None Actual Value Range:NMOI, NMOII, NMOIII Default Value:NMOII (Network Operation Mode II)

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7 Parameters

Parameter ID

NE

MML Command

Feature ID

Feature Name

Description

NMO

BSC6910

SET GCELLPSBAS E

GBFD-119108

Network Operation Mode Support

Meaning:This parameter is related to the paging channel of the system. There are three network operation modes: network operation mode I, network operation mode II, and network operation mode III. Network operation mode I is used when the system is configured with the Gs interface. Network operation mode II is used when the system is not configured with the Gs interface and the PCCCH is not configured. Network operation mode III is used when the system is not configured with the Gs interface and the PCCCH is configured. GUI Value Range:NMOI (Network Operation Mode I), NMOII (Network Operation Mode II), NMOIII (Network

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Parameter ID

NE

MML Command

7 Parameters

Feature ID

Feature Name

Description Operation Mode III) Unit:None Actual Value Range:NMOI, NMOII, NMOIII Default Value:NMOII (Network Operation Mode II)

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8 Counters

8

Counters

Table 8-1 Counter description Counter ID

Counter Name

Counter Description

NE

Feature ID

Feature Name

1279171419

PACCH.CS.PA GING.REQ


BSC6900

GBFD-119305


1279171419

PACCH.CS.PA GING.REQ


BSC6910

GBFD-119305


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9 Glossary

9

Glossary

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

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10 1.

3GPP TS 44.060

2.

3GPP TS 23.060

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10 Reference Documents

Reference Documents


23

BSS Paging Coordination(GBSS15.0_01)

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