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GBSS

V900R011C00

Reconfiguration Guide

Issue 06

Date 2010-05-31

HUAWEI TECHNOLOGIES CO., LTD.


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Copyright Huawei Technologies Co., Ltd. 2010. 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 the 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 06 (2010-05-31) Huawei Proprietary and Confidential

Copyright Huawei Technologies Co., Ltd.

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About This Document

PurposeThis document describes how to reconfigure the BSC6900 during network optimization and how

to configure the optional features.

Product VersionsThe following table lists the product version related to this document.

Product Name Product Version

BSC6900 V900R011C00

BTS3900 BTS3900V100R002C00SPC011

BTS3000 BTS3000V100R009C00SPC011

BTS3012/BTS3012AE/BTS3012II/

BTS3006C/BTS3002E

BTS3000V100R008C11SP03 and later

versions

DBS3900 BTS3000V100R008C11 and later versions

BTS3900/BTS3900A BTS3000V100R008C11 and later versions

BTS3900B/BTS3900E V100R008 and later versions

BTS30/BTS312/BTS3012A V302R007 and later versions

BTS30 and macro BTS312 (EDGE) G3BTS32V302R002C06SP05 and later

versions

BTS30 and macro BTS312 (PCS1900) G3BTS32V302R002C06SP05 and later

versions

Macro BTS3X (AMR) G3BTS32V302R002C06SP05 and later

versions

Intended AudienceThis document is intended for:

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l Technical support engineers

l Maintenance engineers

l Field engineers

l

Network optimization engineers

Organization

1 Changes in GBSS Reconfiguration Guide

This chapter describes the changes in the GBSS Reconfiguration Guide.

2 Introduction to Reconfiguration

This chapter defines reconfiguration and describes the reconfiguration tools.

3 Checking the License

This chapter describes how to check the newly granted license.

4 Reconfiguring the BSC6900

This chapter describes how to reconfigure the running BSC6900 or expand its capacity.

5 Reconfiguring the Transmission Mode

This chapter describes how to reconfigure the transmission mode on the A, Gb, and Abis

interfaces to optimize the network performance.

6 Reconfiguring a BTS

This chapter describes how to reconfigure a BTS. In the case of traffic imbalance, you can adjust

the distribution of hardware resources. Reconfiguring BTSs can help to balance the traffic.

7 Reconfiguring the GSM Network

This chapter describes how to reconfigure the running base station subsystem (BSS) as required.

8 Configuring GSM Features

This section describes how to configure the GSM features of the BSC6900 GSM.

ConventionsSymbol Conventions

The symbols that may be found in this document are defined as follows.

Symbol Description

Indicates a hazard with a high level of risk, which if not

avoided,will result in death or serious injury.

Indicates a hazard with a medium or low level of risk, which

if not avoided, could result in minor or moderate injury.

About This Document

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GUI Conventions

The GUI conventions that may be found in this document are defined as follows.

Convention Description

Boldface Buttons, menus, parameters, tabs, window, and dialog titles

are in boldface. For example, clickOK.

> Multi-level menus are in boldface and separated by the ">"

signs. For example, choose File > Create > Folder.

Keyboard Operations

The keyboard operations that may be found in this document are defined as follows.

Format Description

Key Press the key. For example, press Enter and press Tab.

Key 1+Key 2 Press the keys concurrently. For example, pressing Ctrl+Alt

+A means the three keys should be pressed concurrently.

Key 1, Key 2 Press the keys in turn. For example, pressing Alt, A means

the two keys should be pressed in turn.

Mouse Operations

The mouse operations that may be found in this document are defined as follows.

Action Description

Click Select and release the primary mouse button without moving

the pointer.

Double-click Press the primary mouse button twice continuously and

quickly without moving the pointer.

Drag Press and hold the primary mouse button and move the

pointer to a certain position.

About This Document

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Contents

About This Document...................................................................................................................iii

1 Changes in GBSS Reconfiguration Guide............................................................................1-1

2 Introduction to Reconfiguration.............................................................................................2-1

2.1 Definition........................................................................................................................................................2-2

2.2 Tools................................................................................................................................................................2-2

3 Checking the License.................................................................................................................3-1

4 Reconfiguringthe BSC6900......................................................................................................4-1

4.1 Changing Signaling Points..............................................................................................................................4-2

4.2 Changing the Work Mode of a Board.............................................................................................................4-2

5 Reconfiguring the Transmission Mode.................................................................................5-1

5.1 Changing the Transmission Mode on the A Interface.....................................................................................5-2

5.2 Changing the Transmission Mode on the Gb Interface...................................................................................5-45.3 Changing the Transmission Mode on the Abis Interface................................................................................5-5

6 Reconfiguringa BTS..................................................................................................................6-1

6.1 Changing Timeslot Assignment on a BTS......................................................................................................6-3

6.1.1 Changing the Multiplexing Mode of a BTS...........................................................................................6-3

6.1.2 Changing the Abis Timeslot Assignment Mode....................................................................................6-4

6.1.3 Manually Assigning the Abis Timeslots................................................................................................6-5

6.2 Changing the Transmission Port on a BTS.....................................................................................................6-5

6.3 Changing a BTS from Non-Separated Mode to Separated Mode...................................................................6-6

6.4 Changing the Networking Mode of the 3900 Series Base Stations................................................................6-76.4.1 Changing RXU Chains into an RXU Ring.............................................................................................6-7

6.4.2 Changing an RXU Ring into an RXU Chain.........................................................................................6-9

6.5 Changing the Combined Cabinets and Cabinet Groups Between BTSs.......................................................6-10

6.6 Changing the Frequency Hopping.................................................................................................................6-11

6.6.1 Changing None FH to RF FH..............................................................................................................6-12

6.6.2 Changing None FH to Baseband FH....................................................................................................6-12

6.6.3 Changing RF FH to Baseband FH........................................................................................................6-13

6.6.4 Changing Baseband FH to RF FH........................................................................................................6-14

6.6.5 Changing RF FH to None FH..............................................................................................................6-14

6.6.6 Changing Baseband FH to None FH....................................................................................................6-15

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6.6.7 Setting FH Mode to Hybrid FH............................................................................................................6-15

6.6.8 Changing Hybrid FH to None FH........................................................................................................6-16

6.7 Changing the Non-Ring Topology to Ring Topology..................................................................................6-16

6.8 Adjusting the Multi-Carrier BTS Standard...................................................................................................6-17

6.9 Configuring Rehoming of the BTS with Static IP Address..........................................................................6-17

6.10 Moving BTS Data.......................................................................................................................................6-19

6.11 Configuring a Custom BTS Alarm..............................................................................................................6-20

7 Reconfiguringthe GSM Network...........................................................................................7-1

7.1 Configuring the Network Optimization Parameters of Multiple Cells in Batches..........................................7-2

7.2 Reconfiguring a Cell.......................................................................................................................................7-2

7.2.1 Changing the TRX Power......................................................................................................................7-3

7.2.2 Changing TRX Assignment in a Cell.....................................................................................................7-3

7.2.3 Changing TRX Frequencies...................................................................................................................7-4

7.2.4 Changing Neighboring Cell Relations...................................................................................................7-5

7.3 Reconfiguring Channels..................................................................................................................................7-7

7.3.1 Converting TCHs and SDCCHs.............................................................................................................7-7

7.3.2 Converting TCHs Between Full Rate and Half Rate.............................................................................7-8

8 Configuring GSM Features......................................................................................................8-1

8.1 Overview of Feature Configuration..............................................................................................................8-11

8.2 Activating the GSM License.........................................................................................................................8-36

8.3 Configuring the Emergency Call Service (TS12).........................................................................................8-37

8.4 Configuring the IMSI Detach........................................................................................................................8-37

8.5 Configuring the Direct Retry.........................................................................................................................8-38

8.6 Configuring the Assignment and Immediate Assignment ...........................................................................8-39

8.7 Configuring the Call Reestablishment..........................................................................................................8-40

8.8 Configuring the TCH Re-assignment............................................................................................................8-42

8.9 Configuring Radio Link Management..........................................................................................................8-43

8.10 Configuring Combined Cabinets and Cabinet Groups of BTSs.................................................................8-45

8.11 Configuring Intelligent Shutdown of TRX Due to PSU Failure.................................................................8-48

8.12 Configuring the System Information Sending............................................................................................8-50

8.13 Configuring Daylight Saving Time.............................................................................................................8-51

8.14 Configuring Signaling Transport Point (STP)............................................................................................8-528.15 Configuring 14-Digit Signaling Point Code................................................................................................8-54

8.16 Configuring the DRX..................................................................................................................................8-55

8.17 Configuring BTS Power Management........................................................................................................8-56

8.18 Configuring Connection with TMA............................................................................................................8-57

8.19 Configuring Remote Electrical Tilt.............................................................................................................8-58

8.20 Configuring 2-Antenna Receive Diversity..................................................................................................8-59

8.21 Configuring Base Station Clock..................................................................................................................8-60

8.22 Configuring PBT(Power Boost Technology)..............................................................................................8-61

8.23 Configuring Transmit Diversity..................................................................................................................8-63

8.24 Configuring Four-Way Receive Diversity..................................................................................................8-64

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8.25 Configuring Dynamic Transmit Diversity..................................................................................................8-65

8.26 Configuring Dynamic PBT.........................................................................................................................8-67

8.27 Configuring Co-BCCH Cell........................................................................................................................8-68

8.28 Configuring Multi-band Sharing One BSC.................................................................................................8-70

8.29 Configuring Enhanced Dual-Band Network...............................................................................................8-71

8.30 Configuring Flex MAIO..............................................................................................................................8-74

8.31 Configuring ICC..........................................................................................................................................8-75

8.32 Configuring EICC.......................................................................................................................................8-76

8.33 Configuring Frequency Hopping................................................................................................................8-77

8.34 Configuring BCCH Carrier Frequency Hopping........................................................................................8-78

8.35 Configuring Antenna Frequency Hopping..................................................................................................8-80

8.36 Configuring BCCH Dense Frequency Multiplexing...................................................................................8-81

8.37 Configuring the IBCA.................................................................................................................................8-82

8.38 Configuring Soft-Synchronized Network...................................................................................................8-84

8.39 Configuring BTS GPS Synchronization.....................................................................................................8-86

8.40 Configuring HUAWEI III Power Control Algorithm.................................................................................8-87

8.41 Configuring the DTX..................................................................................................................................8-91

8.42 Configuring TRX Power Amplifier Intelligent Shutdown..........................................................................8-93

8.43 Configuring Intelligent Combiner Bypass..................................................................................................8-94

8.44 Configuring Active Backup Power Control................................................................................................8-95

8.45 Configuring Power Optimization Based on Channel Type.........................................................................8-96

8.46 Configuring PSU Smart Control.................................................................................................................8-97

8.47 Configuring Enhanced BCCH Power Consumption Optimization.............................................................8-988.48 Configuring Dynamic Cell Power Off........................................................................................................8-99

8.49 Configuring TRX Working Voltage Adjustment......................................................................................8-100

8.50 Configuring Multi-Carrier Intelligent Voltage Adjustment......................................................................8-101

8.51 Configuring Flex Abis...............................................................................................................................8-101

8.52 Configuring BTS Local Switch.................................................................................................................8-104

8.53 Configuring the Abis Transmission Optimization....................................................................................8-105

8.54 Configuring Flex Ater...............................................................................................................................8-106

8.55 Configuring BSC Local Switch.................................................................................................................8-106

8.56 Configuring Ater Compression Transmission...........................................................................................8-108

8.57 Configuring BTS Ring Topology..............................................................................................................8-109

8.58 Configuring the TRX Mutual Aid.............................................................................................................8-110

8.59 Configuring the MSC Pool........................................................................................................................8-112

8.59.1 Configuring MSC Pool (A over TDM)............................................................................................8-112

8.59.2 Configuring MSC Pool (A over IP).................................................................................................8-114

8.60 Configuring the SGSN Pool......................................................................................................................8-116

8.61 Configuring Abis Bypass..........................................................................................................................8-117

8.62 Configuring Abis Transmission Backup...................................................................................................8-120

8.63 Configuring the BSC Node Redundancy..................................................................................................8-121

8.64 Configuring the TC Pool...........................................................................................................................8-123

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8.64.1 Configuring the TC Pool..................................................................................................................8-123

8.64.2 Verifying the TC Pool......................................................................................................................8-125

8.65 Configuring Automatic Frequency Correction (AFC)..............................................................................8-126

8.66 Configuring Fast Move Handover.............................................................................................................8-127

8.67 Configuring Chain Cell Handover............................................................................................................8-128

8.68 Configuring Multi-Site Cell......................................................................................................................8-128

8.69 Configuring GSM/WCDMA Interoperability...........................................................................................8-130

8.70 Configuring the Fast 3G Reselection at 2G CS Call Release...................................................................8-132

8.71 Configuring the Satellite Transmission.....................................................................................................8-133

8.71.1 Configuring Satellite Transmission over Abis Interface..................................................................8-134

8.71.2 Configuring Satellite Transmission over A Interface.......................................................................8-135

8.71.3 Configuring Satellite Transmission over Ater Interface..................................................................8-137

8.71.4 Configuring Satellite Transmission over Pb Interface.....................................................................8-138

8.71.5 Configuring Satellite Transmission over Gb Interface.....................................................................8-139

8.72 Configuring High Speed Signaling ..........................................................................................................8-140

8.73 Configuring Local Multiple Signaling Points...........................................................................................8-141

8.74 Configuring Semi-Permanent Connection................................................................................................8-143

8.75 Configuring End-to-End MS Signaling Tracing.......................................................................................8-144

8.76 Configuring Active Power Control...........................................................................................................8-145

8.77 Configuring Ciphering..............................................................................................................................8-146

8.78 Configuring Speech Version.....................................................................................................................8-147

8.79 Configuring Dynamic Adjustment Between FR and HR..........................................................................8-148

8.80 Configuring the Cell Broadcast.................................................................................................................8-1508.80.1 Configuring Short Message Service Cell Broadcast........................................................................8-150

8.80.2 Configuring Simplified Cell Broadcast............................................................................................8-151

8.81 Configuring Automatic Level Control (ALC)..........................................................................................8-153

8.82 Configuring Acoustic Echo Cancellation (AEC)......................................................................................8-154

8.83 Configuring the ANR................................................................................................................................8-156

8.84 Configuring TFO.......................................................................................................................................8-157

8.85 Configuring Automatic Noise Compensation (ANC)...............................................................................8-158

8.86 Configuring Enhancement Packet Loss Concealment (EPLC).................................................................8-158

8.87 Configuring the Voice Quality Index........................................................................................................8-160

8.88 Configuring of Enhanced Measurement Report........................................................................................8-161

8.89 Configuring Dynamic HRFR Adaptation.................................................................................................8-162

8.90 Configuring AMR Coding Rate Threshold Adaptive Adjustment............................................................8-163

8.91 Configuring the WB AMR........................................................................................................................8-166

8.92 Configuring Streaming QoS(GBR)...........................................................................................................8-167

8.93 Configuring QoS ARP/THP......................................................................................................................8-168

8.94 Configuring PS Active Package Management..........................................................................................8-169

8.95 Configuring PoC QoS...............................................................................................................................8-170

8.96 Configuring NC2.......................................................................................................................................8-171

8.97 Configuring the NACC.............................................................................................................................8-172

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8.98 Configuring GPRS....................................................................................................................................8-174

8.99 Configruing Network Operation Mode I...................................................................................................8-175

8.100 Configuring Packet Performance Improvement......................................................................................8-176

8.101 Configuring the Feature of Dynamically Adjusting the Uplink MCS Coding.......................................8-178

8.102 Configuring Packet Channel Dispatching...............................................................................................8-179

8.102.1 Configuring the Feature of EGPRS Special Channel Be Used by Only EGPRS Service.............8-180

8.102.2 Configuring EGPRS Preferred Channel.........................................................................................8-181

8.102.3 Configuring Channel Multiplexing in the E Down G Up Scenario...............................................8-182

8.103 Configuring BSS Paging Coordination...................................................................................................8-183

8.104 Configuring PS Handover.......................................................................................................................8-183

8.105 Configuring EDA....................................................................................................................................8-185

8.106 Configuring PDCH Dynamic Adjustment with Two Thresholds...........................................................8-187

8.107 Configuring DTM...................................................................................................................................8-187

8.108 Configuring Class11 DTM......................................................................................................................8-188

8.109 Configuring HMC DTM.........................................................................................................................8-189

8.110 Configuring 14.4 kbit/s Circuit Switched Data.......................................................................................8-190

8.111 Configuring Resource Reservation.........................................................................................................8-191

8.112 Configuring Enhanced Multi Level Precedence and Preemption (eMLPP)...........................................8-192

8.113 Configuring Guaranteed Emergency Call...............................................................................................8-193

8.114 Configuring Flow Control Based on Cell Priority..................................................................................8-195

8.115 Configuring Network Support SAIC.......................................................................................................8-196

8.116 Configuring the Location Service...........................................................................................................8-198

8.117 Configuring the Abis over IP..................................................................................................................8-1988.118 Configuring the A over IP.......................................................................................................................8-201

8.119 Configuring UDP MUX for A Transmission..........................................................................................8-204

8.120 Configuring the Gb over IP.....................................................................................................................8-204

8.121 Configuring IP Fault detection based on BFD........................................................................................8-206

8.122 Configuring Ethernet OAM....................................................................................................................8-207

8.123 Configuring PICO/Compact BTS Automatic Configuration and Planning............................................8-208

8.124 Configuring PICO Synchronization........................................................................................................8-210

8.125 Configuring Compact BTS Automatic Capacity Planning.....................................................................8-210

8.126 Configuring VGCS/VBS.........................................................................................................................8-211

8.127 Configuring GSM-T Relay......................................................................................................................8-213

8.128 Configuring HUAWEI II Handover........................................................................................................8-214

8.129 Configuring Handover Re-establishment................................................................................................8-215

8.130 Configuring RAN Sharing......................................................................................................................8-216

8.131 Configuration the MSRD........................................................................................................................8-218

8.132 Configuring Dual Carriers in Downlink..................................................................................................8-219

8.133 Configuring the EGPRS2-A....................................................................................................................8-220

8.134 Configuring Latency Reduction..............................................................................................................8-221

8.135 Configuring the License Control for Urgency Function.........................................................................8-221

8.136 Configuring Access Control Class..........................................................................................................8-222

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8.137 Configuring Load Based Handover Enhancement on Iur-g....................................................................8-224

8.138 Configuring 2G3G Co-Transmission by TDM Switching......................................................................8-226

8.139 Configuring Multiple CCCHs.................................................................................................................8-227

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Figures

Figure 6-1 RXU ring and RXU chain examples..................................................................................................6-8

Figure 6-2 RXU ring and RXU chain examples..................................................................................................6-9

Figure 8-1 Signaling Messages..........................................................................................................................8-41

Figure 8-2 Connections of the BTS3012 combined cabinets.............................................................................8-46

Figure 8-3 Connections of BTS3012 cabinet groups.........................................................................................8-46

Figure 8-4 Connections between the DTRU and DDPU in PBT mode.............................................................8-62

Figure 8-5 Network topology when Abis transmission backup is enabled......................................................8-120

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Tables

Table 2-1 Reconfiguration tools...........................................................................................................................2-2

Table 6-1 Mapping between the cabinet group number and the port number of the BTS3012.........................6-10

Table 6-2 Mapping between the cabinet group number and the port number of the BTS3006C.......................6-10

Table 6-3 Mapping between the cabinet group number and the port number when cabinet groups are configured

between the BTS3012 and BTS312....................................................................................................................6-11

Table 6-4 Data to be negotiated and planned for configuring a custom BTS alarm..........................................6-21

Table 8-1 GSM Basic Feature List.....................................................................................................................8-11

Table 8-2 GSM Optional Feature List................................................................................................................8-16

Table 8-3 Counters for verifying HUAWEI III power control...........................................................................8-88

Table 8-4 Description of bit values on the DIP switch S4...............................................................................8-118

Table 8-5 Description of bit values on the DIP switch S5...............................................................................8-118

Table 8-6 Number of WB AMR calls supported by each DSP in various scenarios.......................................8-166

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1 Changes in GBSS Reconfiguration GuideThis chapter describes the changes in the GBSS Reconfiguration Guide.

06 (2010-05-31)

This is the sixth commercial release.

Compared with issue 05 (2010-03-25) of V900R011C00, this issue includes the following new

topics:

l 6.10 Moving BTS Data

l 6.8 Adjusting the Multi-Carrier BTS Standard

l 6.9 Configuring Rehoming of the BTS with Static IP Address

l 6.11 Configuring a Custom BTS Alarm

Compared with issue 05 (2010-03-25) of V900R011C00, this issue incorporates the following

changes.

Item Change Description

5.1 Changing the Transmission Mode on

the A Interface

The description of the prerequisites are

modified.


the Gb Interface


modified.


the Abis Interface


modified.

Compared with issue 05 (2010-03-25) of V900R011C00, this issue does not exclude any topic.

05 (2010-03-25)

This is the fifth commercial release.

Compared with issue 04 (2010-01-30) of V900R011C00, this issue includes the following newtopics:

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l 8.9 Configuring Radio Link Management

l 8.10 Configuring Combined Cabinets and Cabinet Groups of BTSs

l 8.11 Configuring Intelligent Shutdown of TRX Due to PSU Failure

l

8.18 Configuring Connection with TMAl 8.19 Configuring Remote Electrical Tilt

l 8.20 Configuring 2-Antenna Receive Diversity

l 8.21 Configuring Base Station Clock

l 8.31 Configuring ICC

l 8.32 Configuring EICC

l 8.34 Configuring BCCH Carrier Frequency Hopping

l 8.39 Configuring BTS GPS Synchronization

l 8.61 Configuring Abis Bypass

l 8.65 Configuring Automatic Frequency Correction (AFC)

l 8.115 Configuring Network Support SAIC

l 8.3 Configuring the Emergency Call Service (TS12)

l 8.4 Configuring the IMSI Detach

l 8.6 Configuring the Assignment and Immediate Assignment

l 8.7 Configuring the Call Reestablishment

l 8.5 Configuring the Direct Retry

l 8.12 Configuring the System Information Sending

l 8.8 Configuring the TCH Re-assignment

l 8.62 Configuring Abis Transmission Backup

l 8.113 Configuring Guaranteed Emergency Call

l 8.54 Configuring Flex Ater

l 8.13 Configuring Daylight Saving Time

l 8.75 Configuring End-to-End MS Signaling Tracing

l 8.102 Configuring Packet Channel Dispatching

l 8.110 Configuring 14.4 kbit/s Circuit Switched Data

l

8.15 Configuring 14-Digit Signaling Point Codel 8.14 Configuring Signaling Transport Point (STP)

l 8.94 Configuring PS Active Package Management

l 8.79 Configuring Dynamic Adjustment Between FR and HR

l 8.107 Configuring DTM

l 8.108 Configuring Class11 DTM

l 8.109 Configuring HMC DTM

l 8.114 Configuring Flow Control Based on Cell Priority

l 8.90 Configuring AMR Coding Rate Threshold Adaptive Adjustment

l 8.89 Configuring Dynamic HRFR Adaptation


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l 8.88 Configuring of Enhanced Measurement Report

l 8.111 Configuring Resource Reservation

l 8.88 Configuring of Enhanced Measurement Report

l

8.40 Configuring HUAWEI III Power Control Algorithml 8.76 Configuring Active Power Control

l 8.121 Configuring IP Fault detection based on BFD

l 8.119 Configuring UDP MUX for A Transmission

l 8.105 Configuring EDA

l 8.92 Configuring Streaming QoS(GBR)

l 8.93 Configuring QoS ARP/THP

l 8.95 Configuring PoC QoS

l 8.129 Configuring Handover Re-establishment

l 8.128 Configuring HUAWEI II Handover

l 8.86 Configuring Enhancement Packet Loss Concealment (EPLC)

l 8.67 Configuring Chain Cell Handover

l 8.99 Configruing Network Operation Mode I

l 8.103 Configuring BSS Paging Coordination

l 8.137 Configuring Load Based Handover Enhancement on Iur-g

l 8.138 Configuring 2G3G Co-Transmission by TDM Switching

Compared with issue 04 (2010-01-30) of V900R011C00, this issue includes no changes.


04 (2010-01-30)

This is the fourth commercial release.

Compared with issue 03 (2009-12-05) of V900R011C00, this issue does not include any new

topics.


changes:

The configurations for the optional features are optimized, and the verification operations areadded for all the feature configurations.

Compared with issue 03 (2009-12-05) of V900R011C00, this issue excludes the following

topics:

l Configuring the Monitoring Timeslot

l Configuring the Idle Timeslot

l Configuring the Exclusive Timeslot

03 (2009-12-05)

This is the third commercial release.

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topics:

l Configuring the Monitoring Timeslot

l Configuring the Idle Timeslot

l Configuring the Exclusive Timeslot

Compared with issue 02 (2009-10-30) of V900R011C00, this issue includes no changes.


02 (2009-10-30)

This is the second commercial release.


topics:

l 7.1 Configuring the Network Optimization Parameters of Multiple Cells in Batches

l 8.81 Configuring Automatic Level Control (ALC)

l 8.82 Configuring Acoustic Echo Cancellation (AEC)

l 8.36 Configuring BCCH Dense Frequency Multiplexing

l 8.33 Configuring Frequency Hopping

l 8.38 Configuring Soft-Synchronized Network


changes:

Item Change Description


the A Interface

The change of the transmission mode from

TDM to IP is described in BM/TC separated

mode and BM/TC combined mode

respectively.

8.57 Configuring BTS Ring Topology Verifying the BTS Ring Topology is added.

8.35 Configuring Antenna Frequency

Hopping

Configuring the Antenna Frequency

Hopping Quickly is added.


01 (2009-07-30)

This is the first commercial release.


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2 Introduction to ReconfigurationAbout This Chapter

This chapter defines reconfiguration and describes the reconfiguration tools.

2.1 Definition

Reconfiguration refers to a process of adding, deleting, or modifying the data of the BSS system

(consisting of at least one BSC6900 and one base station) after it starts operating.

2.2 Tools

The Local Maintenance Terminal (LMT) and the Configuration Management Express (CME)

can be used to configure the BSC6900.

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2.1 Definition

Reconfiguration refers to a process of adding, deleting, or modifying the data of the BSS system

(consisting of at least one BSC6900 and one base station) after it starts operating.

The BSS is reconfigured in the following scenarios:

l Network optimization

Network optimization is a process of adjusting and optimizing the network performance

based on the data that is obtained from performance measurements or drive tests when the

network is in service.

l System capacity expansion

System capacity expansion enables the BSC system to serve more users through hardware

addition or configuration modification in the existing network.

l Feature configuration

Feature configuration is a process of activating an optional feature by configuring its key

parameters.

This document focuses on the data to be prepared and reconfiguration procedures. However, it

does not focus on the data analysis process of network optimization and the number of boards

and links for capacity expansion that are subject to actual network conditions.

Feature configuration provides guidelines for activating a feature, but it cannot guarantee the

optimum feature performance in the network.

2.2 ToolsThe Local Maintenance Terminal (LMT) and the Configuration Management Express (CME)

can be used to configure the BSC6900.

Table 2-1 describes the tools used in reconfiguration. This document only describes the data

reconfiguration through MML commands on the web LMT (hereinafter referred to as LMT).

Table 2-1 Reconfiguration tools

Data Configuration Tool Function

LMT Online or offline configuration of the BSC6900 can be

performed through MML commands.

CME BSC6900 configuration can be performed through the CME

graphic user interface.

l In integrated mode, the configuration data can be sent to

the BSC6900 through the M2000 immediately or at a

specified time. This mode is used for data reconfiguration.

l In standalone mode, the configuration file needs to be

exported after the configuration and then loaded to the

BSC6900 through the LMT or M2000 for the data to take

effect. This mode applies to BSC6900 initial configuration.

2 Introduction to Reconfiguration

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3 Checking the LicenseThis chapter describes how to check the newly granted license.

Prerequisite

l A new license is granted.

l The BSC6900 is in the minimum configuration.

l The license file is loaded. For details, see FTP Server.

Context

A new license is required in the following situations:

l A network is deployed.

l New license control items are introduced to the C version to be upgraded. These license

control items, however, are not defined in the license file of the earlier version.

l New license control items are introduced to the C version to be upgraded. These license

control items are defined in the license file of the earlier version, but their values are

incorrect.

l The R version is upgraded.

l The Equipment Serial Number (ESN) is changed.

l The functions restricted by the license need to be enabled.

l The license is about to expire.

Procedure

Step 1 Run the CHK DATA2LIC command to check the license. In this step, set File Name.

----End

Example

/*Check the license file named ON1020691_GU2.dat*/

CHK DATA2LIC: FN="ON1020691_GU2.dat"

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Postrequisite

After checking the license, run the ACT LICENSE command to activate the license.

3 Checking the License

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4 Reconfiguring the BSC6900About This Chapter

This chapter describes how to reconfigure the running BSC6900 or expand its capacity.

4.1 Changing Signaling Points

When the BSC6900 is relocated or network optimization is performed, the destination signaling

point code (DPC) and originating signaling point code (OPC) are changed. In this case, you need

to change the related settings.

4.2 Changing the Work Mode of a Board

To improve the reliability of a BSC6900 board, you can change the work mode of the board in

ineffective mode.

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4.1 Changing Signaling Points

When the BSC6900 is relocated or network optimization is performed, the destination signaling

point code (DPC) and originating signaling point code (OPC) are changed. In this case, you need

to change the related settings.

Prerequisite

l The LMT runs normally.

l The LMT communicates with the BSC6900 properly.

l The new DPC and OPC are planned.

l The ESN corresponding to the new DPC and OPC is used.

l The license for the new ESN is granted.

Procedure

Step 1 Run the MOD OPC command. In this step, change OSP name, OSP code bits, orThe hosttype of signalling point.

Step 2 Run the MOD N7DPC command. In this step, change DSP name, DSP code, orAdjacentflag.

----End

Example/*Change an OPC*/

MOD OPC: SPX=1, NAME="MBSC_01", HOSTTYPE=SINGLEHOST;

/*Change a DPC*/

MOD N7DPC: DPX=0, SPDF=WNF, DPC=500;

Postrequisite

You can run the ACT LICENSE command to activate the newly granted license.

All the links and adjacent nodes mapping to the original signaling points are mapped to the newsignaling points.

4.2 Changing the Work Mode of a Board

To improve the reliability of a BSC6900 board, you can change the work mode of the board in

ineffective mode.

Prerequisite

l The board works in independent mode.

l The board supports the active/standby mode.


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l No other board of the same type as the original board is configured in the standby slot.

Context

CAUTION

The board of the DPU type does not support the active/standby mode. Therefore, the following

steps cannot be performed on such a board.

When the XPUa board supports MCP, it can work in only independent mode. In this case, the

following steps cannot be performed on the XPUa board.

After the work mode of a board is changed, the corresponding subrack must be reset. In this

case, the related services are affected. Therefore, perform this operation with caution.

A BSC6900 board works in two modes: independent mode and active/standby mode. To improvethe reliability, the board can be changed from the independent mode to the active/standby mode.

After a board is changed to the active/standby mode, its configuration is automatically copied

to the active and standby boards. The device IP address of the standby IP-based interface board

or the active/standby relationship between the ports on the active and standby boards need to be

manually set. When data is transmitted on the ports of the boards in non-active/standby mode,

you need to run the ADD ETHIP command to configure the device IP address of the standby

board. If data is transmitted on the ports of the boards in active/standby mode, you need to run

the ADD ETHREDPORT to configure the active/standby relationship between the ports on the

active and standby boards.

This operation applies to all the boards except the OMU board. For details on how to change an

OMU board from the independent mode to the active/standby mode, see Switchover Between

the Active and Standby OMUs.

Procedure

Step 1 Run the SET CFGDATAINEFFECTIVE command to set a subrack to ineffective mode.

Step 2 Run the MOD BRD command to change the work mode of a board.

Step 3 Run the SET CFGDATAEFFECTIVE command to set the subrack to effective mode.

Step 4 Run the RST SUBRACKcommand to reset the subrack and make the changed work mode ofthe board take effect.

----End

Example

/*Set subrack 1 to ineffective mode*/

SET CFGDATAINEFFECTIVE: SRN=1;

/*Change the work mode of the board in slot 14 of subrack 1*/

MOD BRD: SRN=1, SN=14, RED=YES;

/*Set all subracks to effective mode*/

SET CFGDATAEFFECTIVE;

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/*Reset subrack 1*/

RST SUBRACK: SRN=1;


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5 Reconfiguring the Transmission ModeAbout This Chapter

This chapter describes how to reconfigure the transmission mode on the A, Gb, and Abis

interfaces to optimize the network performance.

5.1 Changing the Transmission Mode on the A Interface

To improve the transmission efficiency and speech quality on the A interface, you can change

the transmission mode on the A interface from TDM to IP.

5.2 Changing the Transmission Mode on the Gb Interface

To improve the transmission efficiency, increase the throughput, and reduce the transmission

delay on the Gb interface, you can change the transmission mode on the Gb interface from FR

to IP.

5.3 Changing the Transmission Mode on the Abis Interface

To improve the transmission resource utilization, you can change the transmission mode on the

Abis interface from TDM to IP.

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5.1 Changing the Transmission Mode on the A Interface

To improve the transmission efficiency and speech quality on the A interface, you can changethe transmission mode on the A interface from TDM to IP.

Prerequisite

l The peer end supports the A over IP mode.

l The FG2a/FG2c/GOUa/GOUc/PEUa/POUc is configured in the MPS/EPS subrack.

l Networking planning is complete.

l The license A over IP has been activated.

l The DPUc board is configured in MPS/EPS ofBSC6900.

Context

CAUTION

In A over IP mode, only system clock is supported. The line clock is not supported.

Changing the transmission mode on the A interface involves the following scenarios:

l Changing the transmission mode from TDM to IP over FE/GE

l Changing the transmission mode from TDM to IP over E1

Procedure


1. Optional: Run the RMV ATERCONSL/RMV ATERSL, RMV ATEROML, and

RMV ATERE1T1/RMV ATERCONPATH commands to remove Ater interface

data.

NOTE

This step needs to be performed only for TDM transmission in BM/TC separated mode.

2. Run the RMV MTP3RT/RMV MTP3LNK, RMV MTP3LKS, and RMV AE1T1

commands to remove A interface data.

3. Run the RMV BRD command to remove the TDM-based interface boards from all

the subracks and other service processing boards from the TCS.

NOTE

Before removing the A interface board, ensure that the line clock carried on the A interface

board in the TCS is removed. For details on how to remove the line clock and the clock source,

see the description of the SET CLKcommand and the RMV CLKSRC command.

4. Optional: Run the RMV SUBRACKcommand to remove TCS data.


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NOTE


A subrack can be removed only after all the service processing boards in the subrack are

removed.

5. Run the SET BSCBASIC command. In this step, set Service mode to AIP(AIP).

NOTE

After the service mode of the BSC is changed, the resources to each subrack need to be reloaded.

Therefore, you need to run the RST BSC to reset the BSC.

6. Run the ADD BRD in the MPS/ESP subrack to add an IP-based board.

7. Perform the operations in Configuring the Physical Layer and Data Link Layer for the

FG2a/FG2c/GOUa/GOUc Board.

8. Perform the operations in Configuring the Control Plane of the A Interface (over IP).

9. Perform the operations in Configuring the Mapping Between Service Types and

Transmission Resources for the Adjacent Node.10. Perform the operations in Configuring the User Plane of the A Interface (over IP).

l Changing the transmission mode from TDM to IP over E1

1. Optional: Run the RMV ATERCONSL/RMV ATERSL, RMV ATEROML, and

RMV ATERE1T1/RMV ATERCONPATH commands to remove Ater interface

data.

NOTE


2. Run the RMV MTP3RT/RMV MTP3LNK, RMV MTP3LKS, and RMV AE1T1

commands to remove A interface data.

3. Run the RMV BRD command to remove the TDM interface boards and other service

processing boards from the TCS.

4. Run the RMV SUBRACKcommand to remove TCS data.

NOTE


Before removing the A interface board, ensure that the line clock carried on the A interface

board in the TCS is removed. For details on how to remove the line clock and the clock source,

see the description of the SET CLKcommand and the RMV CLKSRC command.

A subrack can be removed only after all the service processing boards in the subrack are

removed.

5. Run the SET BSCBASIC command. In this step, set Service mode to AIP(AIP).

6. Run the ADD BRD in the MPS/ESP subrack to add an IP-based board.

7. Configure the physical layer and the data link layer.

Perform the operations in Configuring the Physical Layer and Data Link Layer for

the PEUa Board.

Perform the operations in Configuring the Physical Layer and Data Link Layer for

the POUc Board.

8. Run the ADD ADJNODE command. In this step, set Adjacent Node Type to A(A

Interface).

9. Perform the operations in Configuring the Mapping Between Service Types andTransmission Resources for the Adjacent Node.

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10. Perform the operations in Configuring the User Plane of the A Interface (over IP).

----End

Example/*Change the transmission mode on the A interface*/

SET BSCBASIC: ServiceMode=AIP;

/*Configure the physical layer, data link layer, and network layer on the A interface*/

ADD DEVIP: SRN=0, SN=24, IPADDR="162.4.5.12", MASK="255.255.255.0"; ADD ETHIP:

SRN=0, SN=24, PN=4, IPTYPE=PRIMARY, IPADDR="161.70.2.104", MASK="255.255.255.0";

ADD IPRT: DSTIP="161.66.2.0", DSTMASK="255.255.255.0", NEXTHOP="161.70.2.201",PRIORITY=HIGH;

/*Configure the control plane on the A interface*/

ADD M3LE: LENO=0, SPX=0, ENTITYT=M3UA_IPSP, NAME="BSC"; ADD N7DPC: NAME="dpc0",DPX=11, SPX=0, SPDF=WNF, DPC=H'1000, DPCT=A, BEARTYPE=M3UA; ADD M3DE: DENO=0,

LENO=0, DPX=11, ENTITYT=M3UA_IPSP, NAME="dpc0"; ADD M3LKS: SIGLKSX=0, DENO=0,

WKMODE=M3UA_IPSP, NAME="M3UALINKSET0"; ADD M3RT: DENO=0, SIGLKSX=0, NAME="RT0";

ADD SCTPLNK: SRN=0, SN=0, SCTPLNKN=0, MODE=CLIENT, APP=M3UA, LOCPN=2004,LOCIP1="162.4.5.12", PEERIP1="161.66.2.210", PEERPN=2004, LOGPORTFLAG=NO,

VLANFlAG=DISABLE, SWITCHBACKFLAG=YES; ADD M3LNK: SIGLKSX=0, SIGLNKID=0, SRN=0,

SN=0, SCTPLNKN=0, NAME="link0";

/*Configure the user plane on the A interface*/

ADD ADJNODE: ANI=5, NAME="A", NODET=A; ADD IPPATH: ANI=5, PATHID=1, ITFT=A,PATHT=QoS, IPADDR="162.4.5.12", PEERIPADDR="161.66.2.213",

PEERMASK="255.255.255.0", TXBW=1000, RXBW=1000, CARRYFLAG=NULL, VLANFlAG=DISABLE,

PATHCHK=DISABLED; ADD TRMMAP: TMI=13, ITFT=A; ADD TRMFACTOR: FTI=1, REMARK="A IP";

ADD ADJMAP: ANI=5, ITFT=A, TMIGLD=13, FTI=1;

5.2 Changing the Transmission Mode on the Gb Interface

To improve the transmission efficiency, increase the throughput, and reduce the transmission

delay on the Gb interface, you can change the transmission mode on the Gb interface from FR

to IP.

Prerequisite

l The built-in PCU is used. The DPUd board is configured.

l The peer end supports the Gb over IP mode.

l A PEUa board is replaced by FG2a/FG2c/GOUc board.


l The license Gb over IP has been activated.

Procedure

Step 1 Run the RMV PTPBVC command to remove the PTPBVC corresponding to the cell.

Step 2 Run the RMV NSVC command to remove NSVC data.

Step 3 Run the RMV BC command to remove BC data.


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Step 4 Run the RMV NSE command to remove NSE data.

Step 5 Run the RMV BRD command to remove the interface board for FR transmission mode.

Step 6 Run the ADD NSE command to add the NSE.

Step 7 Configure the NSVL.

1. Run the ADD NSVLLOCAL command to add an NSVL at the BSC6900 side.

2. Optional: When the NSE is in static configuration mode, run the ADD

NSVLREMOTE command to add the NSVL at the SGSN side.

Step 8 Run the ADD PTPBVC command to add the PTPBVC and to bind the GPRS cell with the NSE.

----End

ExampleADD NSE: NSEI=18013, SRN=0, SN=0, PT=GB_OVER_IP, ISNCMODE=STATIC,

CNOPNAME="46000", CNID=0; ADD NSVLLOCAL: LOCALNSVLI=130, NSEI=18013,IP="21.1.1.21", UDPPN=13000, SRN=0, SN=14; ADD NSVLLOCAL: LOCALNSVLI=131,

NSEI=18013, IP="21.1.1.21", UDPPN=13001, SRN=0, SN=14; ADD NSVLLOCAL:

LOCALNSVLI=132, NSEI=18013, IP="21.1.1.21", UDPPN=13002, SRN=0, SN=14; ADDNSVLLOCAL: LOCALNSVLI=133, NSEI=18013, IP="21.1.1.21", UDPPN=13003, SRN=0, SN=14;

ADD NSVLLOCAL: LOCALNSVLI=134, NSEI=18013, IP="21.1.1.21", UDPPN=13004, SRN=0,

SN=14; ADD NSVLLOCAL: LOCALNSVLI=135, NSEI=18013, IP="21.1.1.21", UDPPN=13005,

SRN=0, SN=14; ADD NSVLLOCAL: LOCALNSVLI=136, NSEI=18013, IP="21.1.1.21",UDPPN=13006, SRN=0, SN=14; ADD NSVLLOCAL: LOCALNSVLI=137, NSEI=18013,

IP="21.1.1.21", UDPPN=13007, SRN=0, SN=14; ADD NSVLREMOTE: REMOTENSVLI=130,

NSEI=18013, IP="19.1.1.20", UDPPN=13000; ADD NSVLREMOTE: REMOTENSVLI=131,

NSEI=18013, IP="19.1.1.20", UDPPN=13001; ADD NSVLREMOTE: REMOTENSVLI=132,NSEI=18013, IP="19.1.1.20", UDPPN=13002; ADD NSVLREMOTE: REMOTENSVLI=133,



NSEI=18013, IP="19.1.1.20", UDPPN=13005; ADD NSVLREMOTE: REMOTENSVLI=136,NSEI=18013, IP="19.1.1.20", UDPPN=13006; ADD NSVLREMOTE: REMOTENSVLI=137,

NSEI=18013, IP="19.1.1.20", UDPPN=13007;

5.3 Changing the Transmission Mode on the Abis Interface

To improve the transmission resource utilization, you can change the transmission mode on the

Abis interface from TDM to IP.

Prerequisite

l The peer end supports the Abis over IP mode.

l The FG2a/FG2c/GOUa/GOUc/PEUa/POUc is configured.


l The license Abis over IP has been activated.

l The built-in PCU is used.

l The DPUc board is configured in MPS/EPS ofBSC6900.

Context

Changing the transmission mode on the Abis interface consists of the following scenarios:


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NOTE

When the IP address of the BSC6900 is not on the same network segment as that of the BTS

in L3 networking, you need to run the ADD IPRT command to configure the IP route at the

BSC side.

6. Run the MOD BTS command. In this step, set Service mode to IP and IP Phy TransType to IP_OVER_E1.

7. Run the MOD BTSCONNECT command to connect the BTS to the port on the new

IP-based interface board.

8. Run the ADD BTSESN command to add the ESN of the BTS.

9. Run the SET BTSIP command. In this step, set BSC IP to the same value as Device

IP orPort IP of the IP-based interface board on the BSC.

10. Run the ACT BTS command to activate the BTS.

----End

ExampleMOD BTS: IDTYPE=BYID, BTSID=8, SERVICEMODE=IP, IPPHYTRANSTYPE=IP_OVER_FE/GE; ADD

BTSBRD: IDTYPE=BYID, BTSID=8, SRN=0, SN=3, BT=PTU; ADD ETHREDPORT: SRN=0, SN=14,

PN=0; ADD ETHIP: SRN=0, SN=14, PN=0, IPINDEX=1, IPADDR="11.12.13.14",

MASK="255.255.255.0"; SET BTSIPCLKPARA: IDTYPE=BYID, BTSID=8,CLKPRTTYPE=HW_DEFINED, ISCLKREDUCY=UNSUPPORT, MASTERIPADDR="10.22.13.22",

SYNMODE=CONSYN; ADD BTSESN: IDTYPE=BYID, BTSID=8, MAINDEVTAB="030GMU1085000422",

BAKDEVTAB="1111111111111111"; SET BTSETHPORT: IDTYPE=BYID, BTSID=8, PN=0,

IP="11.12.13.15", MASK="255.255.255.0"; SET BTSIP: IDTYPE=BYID, BTSID=8,BTSCOMTYPE=PORTIP, BTSIP="11.12.13.15", BSCIP="11.12.13.14"; ADD ADJNODE: ANI=1,

NAME="BTS3900", NODET=ABIS, BTSID=8; ACT BTS:IDTYPE=BYID,BTSID=8; ADD IPPATH:

ANI=1, PATHID=0, ITFT=ABIS, PATHT=QoS, TXBW=1000, RXBW=1000, CARRYFLAG=NULL,VLANFlAG=DISABLE, PATHCHK=DISABLED;

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6 Reconfiguring a BTSAbout This Chapter

This chapterdescribes how to reconfigure a BTS. In the case of traffic imbalance, you can adjust

the distribution of hardware resources. Reconfiguring BTSs can help to balance the traffic.

6.1 Changing Timeslot Assignment on a BTS

Changing timeslot assignment on a BTS consists of changing the BTS multiplexing mode and

changing the Abis timeslot assignment mode.

6.2 Changing the Transmission Port on a BTS

You can change the transmission port on a BTS and the BTS port on the BSC6900 to optimize

network performance.

6.3 Changing a BTS from Non-Separated Mode to Separated Mode

When a multi-transceiver unit is used in system capacity expansion, you need to change the BTS

from the non-separated mode to the separated mode.

6.4 Changing the Networking Mode of the 3900 Series Base Stations

Changing the networking mode of the 3900 series base stations consists of changing the RXU

chain into an RXU ring and changing an RXU ring into an RXU chain.

6.5 Changing the Combined Cabinets and Cabinet Groups Between BTSs

A single BTS cabinet has limited capacity. To deploy a site of high capacity, you can configure

combined cabinets and cabinet groups between BTSs.

6.6 Changing the Frequency Hopping

Frequency hopping (FH) is a commonly used spread spectrum communication technology. It is

characterized by strong anti-interference, strong anti-attenuation, and high security. The

application of FH in the GSM can reduce the interference and increase the system capacity.

6.7 Changing the Non-Ring Topology to Ring Topology

This section describes how to change the non-ring topology to ring topology for a BTS.

6.8 Adjusting the Multi-Carrier BTS Standard

This section describes how to adjust the multi-carrier BTS standard.

6.9 Configuring Rehoming of the BTS with Static IP Address

This section describes how to change data such as the IP address and the route of the BTS thatis configured with the static IP address.

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6.1 Changing Timeslot Assignment on a BTS

Changing timeslot assignment on a BTS consists of changing the BTS multiplexing mode and

changing the Abis timeslot assignment mode.

6.1.1 Changing the Multiplexing Mode of a BTS

When the traffic volume of a TDM-based BTS changes, the demand for timeslots also changes.

You can change the multiplexing mode on the Abis interface of a BTS to maximize the resource

utilization.

6.1.2 Changing the Abis Timeslot Assignment Mode

When the traffic volume of a TDM-based BTS changes, the demand for Abis timeslots also

changes. You can change the Abis timeslot assignment mode to maximize the utilization of Abis

timeslot resources.

6.1.3 Manually Assigning the Abis Timeslots

This describes the manual timeslot assignment on the Abis interface. Timeslot assignment on

the Abis interface is required when you add BTSs, cells, TRXs, idle timeslots, and monitoring

timeslots. By default, the timeslots are assigned automatically. You can also manually assign

timeslots on the Abis interface if required.

6.1.1 Changing the Multiplexing Mode of a BTS

When the traffic volume of a TDM-based BTS changes, the demand for timeslots also changes.

You can change the multiplexing mode on the Abis interface of a BTS to maximize the resource

utilization.

Prerequisite

l The BTS is configured and runs normally.

Context

CAUTION

Changing the BTS multiplexing mode may reset the BTS and affect the ongoing services on the

BTS. Therefore, perform this operation with caution.

Multiplexing mode of Abis timeslots on a BTS is classified into 64 kbit/s statistical multiplexing

mode and 16 kbit/s physical multiplexing mode. In addition, the 64 kbit/s statistical multiplexing

mode is further classified into the following modes: 1:1, 2:1, 3:1, 4:1, 5:1, and 6:1.

It is recommended that the BTS multiplexing mode be changed in the following situations:

l A channel is changed from full rate to half rate.

l A channel is changed from half rate to full rate.

l Flex Abis Mode is changed from FIX_16K_ABIS to FLEX_ABIS.

l Flex Abis Mode is changed from FLEX_ABIS to FIX_16K_ABIS.

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Procedure

Step 1 Run the BSC6900 MML command MOD BTS to change the multiplexing mode of a BTS.

Step 2 Optional: If the command execution in Step 1 fails, run the BSC6900 MML command ADDBTSCONNECT to add a connection to the BSC6900, and then repeat Step 1.

----End

Example

//Run the following command to add a BTS connection.

ADD BTSCONNECT: IDTYPE=BYID, BTSID=0, INPN=0, DESTNODE=BSC, SRN=11, SN=0,

PN=1;

//Run the following command to modify the BTS multiplexing mode.MOD BTS: IDTYPE=BYID, BTSID=0, MPMODE=MODE4_1;

6.1.2 Changing the Abis Timeslot Assignment ModeWhen the traffic volume of a TDM-based BTS changes, the demand for Abis timeslots also

changes. You can change the Abis timeslot assignment mode to maximize the utilization of Abis

timeslot resources.

Prerequisite


Context

CAUTION

When Flex Abis Mode is changed from FIX_16K_ABIS to FLEX_ABIS, the BTS is reset,

thus affecting the BSC services.

When enabling or disabling the flex Abis function, you need to change the Abis timeslot

assignment mode. The Abis timeslot modes are as follows:

l FIX_16K_ABIS

l FLEX_ABIS

l FIX_64K_ABIS

Procedure

Step 1 Run the BSC6900 MML command MOD BTS to change the Abis timeslot assignment mode.

Step 2 Optional: If the command execution in Step 1 fails, run the BSC6900 MML command ADDBTSCONNECT to add a connection to the BSC6900, and then repeat Step 1.

----End


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Example

//Run the following command to add a BTS connection.ADD BTSCONNECT: IDTYPE=BYID, BTSID=0, INPN=0, DESTNODE=BSC, SRN=11, SN=0,

PN=1;

//Run the following command to modify the Abis timeslot allocation mode.

MOD BTS: IDTYPE=BYID, BTSID=0, FLEXABISMODE=FLEX_ABIS;

6.1.3 Manually Assigning the Abis Timeslots

This describes the manual timeslot assignment on the Abis interface. Timeslot assignment on

the Abis interface is required when you add BTSs, cells, TRXs, idle timeslots, and monitoring

timeslots. By default, the timeslots are assigned automatically. You can also manually assign

timeslots on the Abis interface if required.

Prerequisite


Context

CAUTION

Manually assigning Abis timeslots may reset the BTS and affect the ongoing services. Therefore,

perform this operation with caution.

Among the timeslots on the Abis interface, only the timeslot for OML can be assigned manually.

Procedure

Step 1 Run the BSC6900 MML command SET BTSOMLTS to set Time Slot NO. and Sub TimeslotNo. for the OML of the BTS.

----End

Example

//Run the following command to set the OML timeslot distribution on aBTS.

SET BTSOMLTS: IDTYPE=BYID, BTSID=0, PN=1, TS=31, SUBTS=0;

6.2 Changing the Transmission Port on a BTS

You can change the transmission port on a BTS and the BTS port on the BSC6900 to optimize

network performance.

Prerequisite


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CAUTION

Changing the transmission port may reset the BTS and its lower-level BTSs. Therefore, perform

this operation with caution.

The transmission port on a BTS needs to be changed in the following situations:

l A connection to the BSC6900 is added or removed.

l A BTS port is changed on the BSC6900 side.

Procedure

l Change the transmission port on the BTS side.

1. Run the BSC6900 MML command ADD BTSCONNECT orRMV

BTSCONNECT to add or remove a connection to the BSC.

l Change the BTS port on the BSC6900 side.

1. Run the BSC6900 MML command MOD BTSCONNECT to change the BTS port

on the BSC6900 side.

----End

Example//Run the following command to add a BTS connection.

ADD BTSCONNECT: IDTYPE=BYID, BTSID=0, INPN=2, DESTNODE=BSC, SRN=11, SN=0,PN=1;

//Run the following command to remove a BTS connection.

RMV BTSCONNECT: IDTYPE=BYID, BTSID=0, INPN=2;

//Run the following command to modify the BTS port on the BSC side.

MOD BTSCONNECT: IDTYPE=BYID, BTSID=0, INPN=0, DESTNODE=BSC, SRN=11, SN=0,

PN=2;

6.3 Changing a BTS from Non-Separated Mode to SeparatedMode

When a multi-transceiver unit is used in system capacity expansion, you need to change the BTSfrom the non-separated mode to the separated mode.

Prerequisite


l The current BTS supports the separated mode and is configured with a multi-transceiver

unit.


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CAUTION

Only the BTS3012, BTS3012AE, and BTS3012 II support this operation.

After this operation, the BTS is reset. Therefore, perform this operation with caution.

In non-separated mode, the binding between the TRX board and the logical TRX in a BTS is

fixed. In separated mode, the binding between the TRX board and the logical TRX on a BTS is

dynamic.

When a BTS is changed from the non-separated mode to the separated mode, a QTRU can be

configured. In one QTRU, a physical TRX can be bound to six logical TRXs.

Procedure

Step 1 Run the BSC6900 MML command SET BTSSPTMODE to change a BTS from non-separatedmode to separated mode.

----End

Example//Run the following command to change a BTS from non-separated mode to

separated mode.SET BTSSPTMODE: IDTYPE=BYID, BTSID=2047;

6.4 Changing the Networking Mode of the 3900 Series BaseStations

Changing the networking mode of the 3900 series base stations consists of changing the RXU

chain into an RXU ring and changing an RXU ring into an RXU chain.

6.4.1 Changing RXU Chains into an RXU Ring

To improve the system reliability when the traffic volume of the 3900 series base stations

changes, you can change RXU chains into an RXU ring.

6.4.2 Changing an RXU Ring into an RXU ChainTo expand the system capacity when the traffic volume of the 3900 series base stations changes,

you can split an RXU ring into an RXU chain.

6.4.1 Changing RXU Chains into an RXU Ring

To improve the system reliability when the traffic volume of the 3900 series base stations

changes, you can change RXU chains into an RXU ring.

Prerequisite


l There are idle ports on the GTMU.

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The 3900 series base stations consist of the DBS3036, BTS3036, BTS3036A, DBS3900 GSM,

BTS3900 GSM, BTS3900A GSM, BTS3900B GSM, BTS3900E GSM, and BTS3900L GSM.

Only the DBS3036, BTS3036, BTS3036A, DBS3900 GSM, BTS3900 GSM, and BTS3900A

GSM support this operation.

RXU chain and RXU ring indicate the networking modes of the BBUs and RRUs. The BTS3900

GSM is taken as an example. Figure 6-1 shows an RXU chain and an RXU ring.

Figure 6-1 RXU ring and RXU chain examples

INSIDE OUTSIDE

UELP

INSIDE OUTSIDE

UELP

RXU Chain RXU ring

The RXU chain can be changed into an RXU ring in the following ways:

l Combining two RXU chains into an RXU ring

l Changing an RXU chain into an RXU ring

ProcedureStep 1 Run the BSC6900 MML command CBN BTSRXUCHAIN to combine two RXU chains into

an RXU ring or change an RXU chain into an RXU ring.

----End

Example//Run the following command to change an RXU chain to an RXU ring.CBN BTSRXUCHAIN: IDTYPE=BYID, BTSID=9, CHAINTORING=CHAINTORING, RCN

Documents

Good Document_GBSS Reconfiguration Guide(V900R011C00_06)