Huawei Technologies QISGRFU-1900 GSMRadio Frequency Unit User Manual

BTS3900(A) GSM

V300R008

Commissioning Guide

Issue

Date

02

2009-04-20

Huawei Proprietary and Confidential

Copyright © Huawei Technologies Co., Ltd.

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Copyright © Huawei Technologies Co., Ltd. 2009. All rights reserved.

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BTS3900(A) GSM

Commissioning Guide Contents

Contents

About This Document.....................................................................................................................1

1 Changes in BTS3900(A) GSM Commissioning Guide.......................................................1-1

2 General Requirements for the Commissioning...................................................................2-1

2.1 Commissioning Resources..............................................................................................................................2-2

2.2 Commissioning Prerequisites..........................................................................................................................2-3

3 Commissioning Procedure.......................................................................................................3-1

4 Commissioning the BTS (Transmission Available)............................................................4-1

4.1 Starting the LMT.............................................................................................................................................4-2

4.2 Checking the Transmission and Networking..................................................................................................4-4

4.2.1 Checking the Transmission Between the RRU and the BBU or Between the BBU and the BSC on the

LMT................................................................................................................................................................4-5

4.2.2 Checking the Transmission Between Cascaded BTSs...........................................................................4-6

4.2.3 Checking the Transmission Between BTSs in Ring Topology..............................................................4-8

4.3 Checking Software Version and Data Configuration....................................................................................4-11

4.3.1 Checking the Board Configuration and Status on the LMT.................................................................4-11

4.3.2 Checking the Current Software Version on the LMT..........................................................................4-13

4.3.3 Checking the Consistency Between Hardware Installation and Data Configuration...........................4-14

4.4 Checking the Alarm Information of the BTS (on the LMT).........................................................................4-19

4.5 Commissioning the BTS Services.................................................................................................................4-22

4.5.1 Testing the CS Services........................................................................................................................4-23

4.5.2 Commissioning PS Services.................................................................................................................4-25

4.6 Checking the BTS Environment Alarms.......................................................................................................4-26

4.6.1 BTS Environment Alarm Types...........................................................................................................4-26

4.6.2 Checking the Environment Monitoring Alarms on the LMT..............................................................4-28

5 Commissioning the BTS (Transmission Unavailable).......................................................5-1

5.1 Starting the Site Maintenance Terminal..........................................................................................................5-2

5.1.1 Setting the IP Address of the Site Maintenance Terminal PC...............................................................5-2

5.1.2 Locally Connecting the SMT PC to the BTS.........................................................................................5-3

5.1.3 Logging in to the BTS at the Local End.................................................................................................5-3

5.2 Configuring the Basic Data of the BTS..........................................................................................................5-5

5.2.1 Obtaining the Site Management Rights.................................................................................................5-6

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i

Contents

BTS3900(A) GSM

Commissioning Guide

5.2.2 Configuring the Boards of the BTS on the SMT...................................................................................5-7

5.2.3 Configuring Logical Objects of the BTS on the SMT.........................................................................5-11

5.3 Checking the Active Software Version on the SMT.....................................................................................5-23

5.4 Checking the Transmission Between the BBU and RFU on the BTS Side..................................................5-25

5.5 Checking the Running Status of the BTS......................................................................................................5-26

5.5.1 Checking the State of the BTS LEDs...................................................................................................5-26

5.5.2 Checking the Alarm Information of the BTS on the SMT...................................................................5-29

5.6 Checking the Hardware Connection of the BTS...........................................................................................5-32

6 Optional Commissioning Tasks..............................................................................................6-1

6.1 Commissioning the Antenna System..............................................................................................................6-2

6.1.1 Measuring the VSWR............................................................................................................................6-2

6.1.2 Monitoring the Output Power of TRXs..................................................................................................6-3

6.1.3 Checking the Antenna Connection.........................................................................................................6-5

6.2 Performing the Loopback Test........................................................................................................................6-6

6.2.1 Performing the Carrier Loopback Test...................................................................................................6-6

6.2.2 Performing Channel Loopback Tests.....................................................................................................6-8

6.3 Checking the DIP Switch Settings of the Boards............................................................................................6-9

6.4 Locally Checking the Transmission Between the BBU and the BSC...........................................................6-10

6.5 Checking the Transmission Between Cascaded TRXs.................................................................................6-12

6.6 Checking TRXs in Ring Topology................................................................................................................6-14

7 FAQs for BTS Commissioning................................................................................................7-1

7.1 Failed Communication Between the SMT and the BTS.................................................................................7-2

7.2 Faulty E1 Link.................................................................................................................................................7-2

7.3 Failure of an MS to Search the Network.........................................................................................................7-6

7.4 Service Dialing Failure....................................................................................................................................7-7

7.5 Low GPRS Data Transmission Rate...............................................................................................................7-7

8 Commissioning Record Data Sheet........................................................................................8-1

9 Communication Ports Used by the GBTS.............................................................................9-1

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BTS3900(A) GSM

Commissioning Guide Figures

Figures

Figure 3-1 Commissioning procedure (transmission available)...........................................................................3-2

Figure 3-2 Commissioning procedure (transmission unavailable).......................................................................3-4

Figure 4-1 Login dialog box of the BSC6000 Local Maintenance Terminal.......................................................4-2

Figure 4-2 BSC Management dialog box ............................................................................................................4-3

Figure 4-3 Login dialog box of the M2000 client................................................................................................4-3

Figure 4-4 iManager M2000 Mobile Element Management System window ....................................................4-4

Figure 4-5 Check whether the link between the BBU and the BSC is normal....................................................4-6

Figure 4-6 Check whether the link between the BBU and the RFU is normal....................................................4-6

Figure 4-7 Cascaded BTSs on the LMT...............................................................................................................4-7

Figure 4-8 Site Device Panel tab page.................................................................................................................4-8

Figure 4-9 Connection between ring topology BTSs...........................................................................................4-9

Figure 4-10 Maintain Ring Network dialog box..................................................................................................4-9

Figure 4-11 Confirm dialog box.........................................................................................................................4-10

Figure 4-12 Result of the ring topology switchover (1).....................................................................................4-10

Figure 4-13 Result of the ring topology switchover (2).....................................................................................4-10

Figure 4-14 Site Device Panel tab page.............................................................................................................4-12

Figure 4-15 Query Board Information dialog box.............................................................................................4-13

Figure 4-16 Query Board Running Software Version dialog box ....................................................................4-14

Figure 4-17 Relation between data configuration and physical connection of the BTS3900 monitoring boards

.............................................................................................................................................................................4-15

Figure 4-18 Relation between data configuration and physical connection of the BTS3900A monitoring boards

.............................................................................................................................................................................4-16




Figure 4-22 Filter Alarm Condition dialog box.................................................................................................4-21

Figure 4-23 Alarm Detail Information dialog box.............................................................................................4-21

Figure 4-24 BSS Help System ...........................................................................................................................4-22

Figure 4-25 Modify Administrative State dialog box........................................................................................4-24

Figure 4-26 Basic Attributes of Site Board (1)..................................................................................................4-30




Figure 5-1 Site Maintenance Terminal system window.......................................................................................5-4



iii

Figures

BTS3900(A) GSM

Commissioning Guide

Figure 5-2 Communication failed dialog box...................................................................................................... 5-4

Figure 5-3 Set Communication Port Parameter dialog box................................................................................. 5-5

Figure 5-4 Warning message for obtaining the site management right................................................................5-6

Figure 5-5 Site Management Right dialog box....................................................................................................5-6

Figure 5-6 Board Configuration window.......................................................................................................... 5-8

Figure 5-7 Topology Configuration window.....................................................................................................5-8

Figure 5-8 Deploy DRRU dialog box ................................................................................................................. 5-9

Figure 5-9 Topology Configuration window....................................................................................................... 5-9

Figure 5-10 Board Configuration window ........................................................................................................5-10

Figure 5-11 Parameter Management dialog box.............................................................................................5-11

Figure 5-12 Site Configuration dialog box (1)...................................................................................................5-12





Figure 5-17 User Error dialog box.....................................................................................................................5-17


Figure 5-19 Configured cell and channels..........................................................................................................5-19

Figure 5-20 Site Opstart dialog box...................................................................................................................5-20

Figure 5-21 Cell Opstart dialog box...................................................................................................................5-20

Figure 5-22 BT Opstart dialog box....................................................................................................................5-21

Figure 5-23 RC Attributes Management dialog box..........................................................................................5-21

Figure 5-24 RC Opstart successfully dialog box................................................................................................5-22

Figure 5-25 Board Management window...........................................................................................................5-22

Figure 5-26 Board Management window (1).....................................................................................................5-23

Figure 5-27 Topology Management window.....................................................................................................5-24

Figure 5-28 Board Information dialog box (1) ..................................................................................................5-24

Figure 5-29 Board Information dialog box (2)...................................................................................................5-25

Figure 5-30 Board Management window ..........................................................................................................5-30

Figure 5-31 Topology Management window.....................................................................................................5-31

Figure 5-32 Board Alarm Information dialog box.............................................................................................5-31

Figure 6-1 Please select RC to test dialog box.....................................................................................................6-3

Figure 6-2 RF Performance Test dialog box........................................................................................................6-3

Figure 6-3 Test TRX Loopback dialog box......................................................................................................... 6-7

Figure 6-4 Test Channel Loopback dialog box....................................................................................................6-8

Figure 6-5 Site Device Attributes dialog box.....................................................................................................6-10

Figure 6-6 Physical loopback of E1/T1 at the DDF...........................................................................................6-12

Figure 6-7 Site Device Panel tab page...............................................................................................................6-13

Figure 6-8 Connection between TRXs in ring topology....................................................................................6-14

Figure 6-9 Site Device Attributes dialog box.....................................................................................................6-15

Figure 6-10 Set RXU Chain Break Point dialog box.........................................................................................6-16

Figure 6-11 Setting breakpoint successfully......................................................................................................6-16

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BTS3900(A) GSM

Commissioning Guide Figures

Figure 6-12 Status of the disconnected TRX ring topology...............................................................................6-17

Figure 6-13 Split RXU Chain dialog box...........................................................................................................6-17

Figure 6-14 Splitting RXU chain successfully...................................................................................................6-18

Figure 6-15 TRX ring topology in splitting state...............................................................................................6-18

Figure 6-16 Combine RXU Chain dialog box....................................................................................................6-19

Figure 6-17 Combining RXU chain successfully...............................................................................................6-20

Figure 6-18 RXU ring in combined state...........................................................................................................6-21

Figure 6-19 RXU Ring in normal state..............................................................................................................6-22

Figure 7-1 Crossed pair connection......................................................................................................................7-3

Figure 7-2 E1 link between the BTS and the BSC (1).........................................................................................7-3

Figure 7-3 E1 link between the BTS and the BSC (2).........................................................................................7-4

Figure 7-4 Physical loopback of E1/T1 on the BTS side.....................................................................................7-5



v

BTS3900(A) GSM

Commissioning Guide Tables

Tables

Table 2-1 Tools required for the commissioning of the BTS3900/BTS3900A...................................................2-2

Table 3-1 Commissioning procedure (transmission available)............................................................................3-2

Table 3-2 Commissioning procedure (transmission unavailable)........................................................................3-5

Table 4-1 Monitoring boards of the BTS3900 and the BTS3900A...................................................................4-28

Table 5-1 TRX types configured on the BTS3900 GSM or the BTS3900A GSM..............................................5-7

Table 5-2 Normal states of the LEDs on the board and modules in the BBU....................................................5-27

Table 5-3 Normal states of the LEDs on the DRFU...........................................................................................5-27

Table 5-4 Normal states of the LEDs on the GATM.........................................................................................5-28

Table 5-5 Normal states of the LEDs on the FAN unit......................................................................................5-28

Table 5-6 Normal states of the LEDs on the PMU.............................................................................................5-28

Table 5-7 Normal states of the LEDs on the PSU..............................................................................................5-29

Table 5-8 Checklist for the connection of the power cables and grounding cables...........................................5-32

Table 5-9 Checklist for the connection of the signal cables...............................................................................5-33

Table 6-1 Parameter required in RF performance test..........................................................................................6-4

Table 7-1 Possible causes and handling suggestions for failed communication between the SMT and the BTS

...............................................................................................................................................................................7-2

Table 7-2 Meaning of the state of the LIU LEDs (UELP used)..........................................................................7-5

Table 7-3 Meaning of the state of the LIU LEDs (UELP not used)....................................................................7-6

Table 7-4 Possible causes and handling suggestions for service dialing failure..................................................7-7

Table 7-5 Description of the DIP switch SW2 on the GTMU.............................................................................7-7

Table 8-1 Data sheet for BTS commissioning......................................................................................................8-1

Table 9-1 The Communication Port Used by GBTS............................................................................................9-1



vii

BTS3900(A) GSM

Commissioning Guide About This Document

About This Document

Overview

This document describes the procedures for commissioning and verifying the BTS3900/

BTS3900A GSM after it is installed. The commissioning and verification procedures ensure that the BTS3900/BTS3900A GSM operates as required. The BTS3900/BTS3900A commissioning scenarios include the transmission available scenario and transmission unavailable scenario.

Version

The following table lists the product versions related to this document.

Product Name

BTS3900 GSM (hereinafter referred to as BTS3900)

BTS3900A GSM (hereinafter referred to as BTS3900A)

Version

V300R008

V300R008

Intended Audience

This document is intended for: l l

Field engineers

Technical support engineers

Organization

1 Changes in BTS3900(A) GSM Commissioning Guide

This describes the changes in the “BTS3900(A) GSM Commissioning Guide”.

2 General Requirements for the Commissioning

The general requirements for the commissioning are the commissioning prerequisites and commissioning resources.

3 Commissioning Procedure

This describes the commissioning procedure of the BTS. According to the transmission situation between the BSC and BTS, the commissioning procedure of the BTS can be classified into two types: commissioning procedure in transmission available scenario and commissioning procedure in transmission unavailable scenario.



1

About This Document

BTS3900(A) GSM

Commissioning Guide

4 Commissioning the BTS (Transmission Available)

This describes how to commission the BTS when the transmission cable between the BSC and the BTS is properly connected.

5 Commissioning the BTS (Transmission Unavailable)

This describes how to commission the BTS in the transmission unavailable scenario. The commissioning of the BTS consists of two phases. In the initial phase of the commissioning, the transmission cable between the BSC and the BTS is not properly connected. Commission the

BTS at the local end. In the later phase of the commissioning, the transmission cable between the BSC and the BTS is properly connected. Commission the BTS on the BSC side.

6 Optional Commissioning Tasks

The optional commissioning tasks are the VSWR check, output power of the TRX check, loopback test check, settings of the DIP switches on the board check, transmission between the

BBU and the BSC on the BTS side check, transmission between cascaded TRXs check, and

TRX ring topology check.

7 FAQs for BTS Commissioning

This describes the fault symptoms and cause analysis in the BTS commissioning.

8 Commissioning Record Data Sheet

This describes the data sheet that is used to record the process and result of the BTS commissioning.

9 Communication Ports Used by the GBTS

Conventions

Symbol 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.

Indicates a potentially hazardous situation, which if not avoided,could result in equipment damage, data loss, performance degradation, or unexpected results.

Indicates a tip that may help you solve a problem or save time.

Provides additional information to emphasize or supplement important points of the main text.

2

General Conventions



Issue 02 (2009-04-20)

BTS3900(A) GSM

Commissioning Guide About This Document

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

Convention

Times New Roman

Boldface

Italic

Courier New

Description

Normal paragraphs are in Times New Roman.

Names of files, directories, folders, and users are in boldface . For example, log in as user root .

Book titles are in italics .

Examples of information displayed on the screen are in

Courier New.

Command Conventions

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

Convention

Boldface

Italic

[ ]

{ x | y | ... }

[ x | y | ... ]

{ x | y | ... }

[ x | y | ... ] *

*

Description

The keywords of a command line are in

Command arguments are in italics .

boldface .

Items (keywords or arguments) in brackets [ ] are optional.

Optional items are grouped in braces and separated by vertical bars. One item is selected.

Optional items are grouped in brackets and separated by vertical bars. One item is selected or no item is selected.

Optional items are grouped in braces and separated by vertical bars. A minimum of one item or a maximum of all items can be selected.

Optional items are grouped in brackets and separated by vertical bars. Several items or no item can be selected.

GUI Conventions

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

Convention

Boldface

>

Description

Buttons, menus, parameters, tabs, window, and dialog titles are in boldface . For example, click OK .

Multi-level menus are in boldface and separated by the ">" signs. For example, choose File > Create > Folder .

Issue 02 (2009-04-20)

Keyboard Operations

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



3

About This Document

Format

Key

Key 1 + Key 2

Key 1 , Key 2

BTS3900(A) GSM

Commissioning Guide

Description

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

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

+ A means the three keys should be pressed concurrently.

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

Click

Double-click

Drag

Description

Select and release the primary mouse button without moving the pointer.

Press the primary mouse button twice continuously and quickly without moving the pointer.

Press and hold the primary mouse button and move the pointer to a certain position.

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Issue 02 (2009-04-20)

BTS3900(A) GSM

Commissioning Guide 1 Changes in BTS3900(A) GSM Commissioning Guide

1

Changes in BTS3900(A) GSM

Commissioning Guide

This describes the changes in the “BTS3900(A) GSM Commissioning Guide”.

02(2009-04-20)

Second commercial release

Compared with issue 01 (2009-02-16) of V300R008, no contents are deleted. The changes are as follows:

The solution to trouble is added. For details, see 5.2.3 Configuring Logical Objects of the BTS on the SMT

, 4.2.3 Checking the Transmission Between BTSs in Ring Topology

, 4.2.1

Checking the Transmission Between the RRU and the BBU or Between the BBU and the

BSC on the LMT and

5.2.1 Obtaining the Site Management Rights

.

01 (2009-02-16)

Initial commercial release



1-1

BTS3900(A) GSM

Commissioning Guide 2 General Requirements for the Commissioning

2

General Requirements for the

Commissioning

About This Chapter

The general requirements for the commissioning are the commissioning prerequisites and commissioning resources.

2.1 Commissioning Resources

Before the commissioning, you must arrange for the tools, obtain the information about the site to be commissioned, and download the correct software for the boards in the BTS3900/

BTS3900A.

2.2 Commissioning Prerequisites

Before the commissioning, you must check the operating status of the BTS3900/BTS3900A and

BSC.



2-1

2 General Requirements for the Commissioning

BTS3900(A) GSM

Commissioning Guide

2.1 Commissioning Resources

Before the commissioning, you must arrange for the tools, obtain the information about the site to be commissioned, and download the correct software for the boards in the BTS3900/

BTS3900A.

Tools

Table 2-1

describes the tools and instruments required for the commissioning.

Table 2-1 Tools required for the commissioning of the BTS3900/BTS3900A

Tools Qua ntity

Specification

PC 1 Optional. The PC is used for the commissioning on the BTS side when the transmission between the BSC and BTS is unavailable. For details on the configuration, see Configuration Requirements for the Site Maintenance Terminal PC .

For details on how to install and use the SMT application, see BTS3900A GSM Site Maintenance

Terminal User Guide .

Multimeter

Power Meter

1

1

Site Master

GSM MSs for testing

1

2

Mandatory

Mandatory. The power meter is used to measure the output power of TRXs.

Mandatory. The Site Master is used to measure the

VSWR.

Mandatory. The MSs are used for the BTS service commissioning and antenna system commissioning.

The requirements for the GSM MS for testing are as follows: l The UE is configured with the SIM card.

l The MS is registered with the HLR on the network.

Ethernet cable 1 Optional. The Ethernet cable is used to connect the

SMT PC to the BBU when the transmission is unavailable.

NOTE

If the SMT PC is installed with the windows 98 operating system, the type of the Ethernet cables should be crossover cable.

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BTS3900(A) GSM

Commissioning Guide 2 General Requirements for the Commissioning

Tools

Serial port cable

Flat-head screwdriver

Light emitting diode (LED)

Qua ntity

1

Specification

1

2

Optional. The serial port cable is used when you query the IP address of the board on the BTS side.

The auxiliary cables are listed as follows: l

One commissioning cable connected to the serial

Ethernet port l

One extended serial port cable

Optional. The flat-head screwdriver is used to remove the Ethernet cable when the transmission between the BSC and the BTS is unavailable.

When removing the Ethernet port, you must use a flat-head screwdriver to press the RJ45 connector and then remove the RJ45 connector.

Optional. The LEDs are used to determine the RX or

TX end of the E1 line.

Information About the Base Station

Before the commissioning, you must obtain the following information about the base station: l l

Information on BTS networking and related configuration, including the BTS type, transmission mode, networking mode, and cell configuration.

BTS3900/BTS3900A data configured on the BSC side.

Board Software

When the transmission is unavailable, download the matching software for the boards to the

SMT PC before the commissioning.

l l l l

The software for the boards in the BTS3900/BTS3900A is as follows:

RFU software

GTMU software

GATM software

PMU software

2.2 Commissioning Prerequisites

Before the commissioning, you must check the operating status of the BTS3900/BTS3900A and

BSC.

Hardware Requirements l

The BTS3900/BTS3900A cabinet is installed and the cables are connected.

l The BTS3900/BTS3900A has passed the hardware installation check before it is powered on.



2-3

2 General Requirements for the Commissioning

BTS3900(A) GSM

Commissioning Guide l l

The BTS3900/BTS3900A is powered on. For details, see Powering On the BTS3900A or

Powering On the BTS3900 .

The BSC is installed. The system commissioning is complete, and the system is running normally.

Software Requirements l The data of the BTS3900/BTS3900A is configured on the BSC.



Issue 02 (2009-04-20)

BTS3900(A) GSM

Commissioning Guide 3 Commissioning Procedure

3

Commissioning Procedure

This describes the commissioning procedure of the BTS. According to the transmission situation between the BSC and BTS, the commissioning procedure of the BTS can be classified into two types: commissioning procedure in transmission available scenario and commissioning procedure in transmission unavailable scenario.

Context l l

To solve common problems that occur during the commissioning, see

7 FAQs for BTS

Commissioning .

In this document, RFUs are classified into two types: DRFUs and GRFUs.

Procedure l Commissioning procedure in transmission available scenario

In the transmission available scenario, the transmission cables between the BSC and the

BTS are properly connected before the commissioning. Generally, the commissioning is performed on the BSC6000 LMT. If the commissioning can not be performed on the LMT independently, contact engineers on the BTS side to perform the commissioning task.



3-1

3 Commissioning Procedure

Figure 3-1 Commissioning procedure (transmission available)

Run

BTS3900(A) GSM

Commissioning Guide

Remote operation

Run the BSC LMT

Check the Transmission and Networking

Check the software version

and the data configuration

Check the alarm information of the BTS

Cooperation of

local and remote operation

Commission the BTS services

Check the BTS environment alarms

End

Table 3-1 Commissioning procedure (transmission available)

No.

Operation Procedure

1 Operation on the

BSC LMT

Run the BSC LMT software. For details, see 4.1

Starting the LMT

.

Mandat ory/

Optiona l

Mandato ry



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BTS3900(A) GSM


No.

Operation Procedure Mandat ory/

Optiona l

Mandato ry

2

3

4

5 Operation on the

BTS side.

Check the transmission and networking to ensure that the transmission between the BBU and BSC, BBU and

RFU, cascaded BBUs, and cascaded RFUs is normal.

For details, see 4.2 Checking the Transmission and

Networking .

Check the software version and configuration data.

For details, see 4.3 Checking Software Version and

Data Configuration .

Check the alarm information of the BTS. For details,

see 4.4 Checking the Alarm Information of the BTS

(on the LMT)

.

Commission the antenna system. The commissioning consists of the following items: output power of the

TRXs, voltage standing wave ratio (VSWR), and connection between the antenna system and BTS. For

details, see 6.1 Commissioning the Antenna

System

.

Mandato ry

Mandato ry

Optional

6 Operation on the

BSC LMT

Perform the channel loopback test on the LMT to ensure the normal operation of the signaling channel

and service channel. For details, see 6.2 Performing the Loopback Test

.

Commission the CS services and PS services. For

details, see 4.5 Commissioning the BTS Services .

Optional

7

8

Operation requiring for the cooperatio n of the

BTS side and BSC side.

Check the environment monitoring alarm. For details,

see 4.6.2 Checking the Environment Monitoring

Alarms on the LMT

.

Mandato ry

Mandato ry l Commissioning procedure in transmission unavailable scenario

In transmission unavailable scenario, the BTS commissioning consists of two phases: In the initial phase of the commissioning, the transmission cables between the BSC and the

BTS are not properly connected. Commission the BTS at the local end. In the later phase of the commissioning, the transmission cable between the BSC and the BTS is properly connected. Commission the BTS on the LMT.



3-3


Figure 3-2 Commissioning procedure (transmission unavailable)

Run

BTS3900(A) GSM

Commissioning Guide

Local operation before the transmission is available

Run the Site Maintenance Terminal

Configure the basic data of the site

Check the active software version

Check the transmission

between the BBU and the RFU locally

Check the operation of the BTS

Check the hardware connections of the BTS

Wait till the transmission is available

Remote operation after the transmission is available

Run the BSC LMT

Check the transmission and networking

Check the consistency between hardware installation and data configuration

Check the alarm information of the BTS

Cooperation of the local and remote operation after the transmission is available

Commission the BTS services

Check the BTS environment alarms

End



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BTS3900(A) GSM


Table 3-2 Commissioning procedure (transmission unavailable)

No.

1

2

3

4

5

6

7

8

9

10

Operation on the

BTS side.

Operation on the

BSC LMT


Run the Site Maintenance Terminal. For details, see

5.1 Starting the Site Maintenance Terminal .

Configure the basic data of the BTS such as boards of the BTS and logical objects of the site to ensure that the SMT can support the local commissioning tasks.

For details, see 5.2 Configuring the Basic Data of the BTS

.

Check the active software version. For details, see 5.3

Checking the Active Software Version on the

SMT .

Check the transmission between the BBU and RFU.

For details, see 5.4 Checking the Transmission

Between the BBU and RFU on the BTS Side

.

Check the running status of the BTS. The procedure for checking the running status of the BTS involves checking the state of LEDs and alarm information. For

details, see 5.5 Checking the Running Status of the

BTS

.

Check the hardware connection of the BTS. For

details, see 5.6 Checking the Hardware Connection of the BTS

.

Commission the antenna system. The commissioning consists of the following items: output power of the

TRXs, VSWR, and connection between the antenna system and the BTS. For details, see

6.1

Commissioning the Antenna System

.

Wait till the transmission is available.

Run the BSC LMT software. For details, see

4.1

Starting the LMT

.

Check the transmission and networking to ensure that the transmission between the BBU and BSC, BBU and

RFU, cascaded BBUs, and cascaded RFUs is normal.

For details, see

4.2 Checking the Transmission and

Networking

.

Check the software version and configuration data.

For details, see 4.3 Checking Software Version and

Data Configuration

.

Mandat ory/

Optiona l

Mandato ry

Mandato ry

Mandato ry

Mandato ry

Mandato ry

Mandato ry

Optional

Mandato ry

Mandato ry

Mandato ry



3-5


BTS3900(A) GSM

Commissioning Guide

----End

No.

11

12

13 Operation requiring

14 for the cooperatio n of the

BTS side and BSC side.


Check the alarm information of the BTS. For details,

see 4.4 Checking the Alarm Information of the BTS

(on the LMT)

.

Perform the channel loopback test on the LMT to ensure the normal operation of the signaling channel

and service channel. For details, see 6.2 Performing the Loopback Test .

Commission the CS services and PS services. For details, see

4.5 Commissioning the BTS Services

.

Check the environment monitoring alarm. For details, see

4.6.2 Checking the Environment Monitoring

Alarms on the LMT .

Mandat ory/

Optiona l

Mandato ry

Optional

Mandato ry

Mandato ry



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Commissioning Guide 4 Commissioning the BTS (Transmission Available)

4

Commissioning the BTS (Transmission

Available)


This describes how to commission the BTS when the transmission cable between the BSC and the BTS is properly connected.

4.1 Starting the LMT

You can directly log in to the LMT, or log in to the LMT through the M2000 client.

4.2 Checking the Transmission and Networking

This describes how to check the transmission and networking. The purpose of checking the transmission and networking is to ensure that the BTS3900A transmission cables and hardware are correctly installed. The items to be checked consist of the transmission between the BBU and the BSC, the transmission between the BBU and the RFU, the transmission between the cascaded BTSs, and the transmission between the BTSs in ring topology.

4.3 Checking Software Version and Data Configuration

This describes how to check software version and data configuration to ensure the correctness of the software version and configuration data. The items to be checked are the configuration and status of the board, the software version information, and the consistency between the hardware installation and the data configuration.

4.4 Checking the Alarm Information of the BTS (on the LMT)

This describes how to check the alarm information of the BTS on the BSC6000 Local

Maintenance Terminal . If an alarm is generated, you need clear the alarm based on the suggestions in the BSS Help System.

4.5 Commissioning the BTS Services

This describes how to use an MS to test whether the BTS supports CS services and PS services.

4.6 Checking the BTS Environment Alarms

This describes how to check the BTS environment alarms. It also describes how to monitor the operating environment of the BTS.



4-1

4 Commissioning the BTS (Transmission Available)

BTS3900(A) GSM

Commissioning Guide

4.1 Starting the LMT

You can directly log in to the LMT, or log in to the LMT through the M2000 client.

Context

CAUTION

Do not modify the system time when the LMT application is running. Otherwise, critical errors may occur on the system. If you have to modify the server time, stop the LMT application first.

The default user name and password for the first login are both admin. After you log in to the system for the first time, you are required to change the password. The new password should comply with the default password policy.

Procedure l Directly log in to the LMT.

1.

Choose Start > All Programs > Huawei Local Maintenance Terminal >

BSC6000V900B008Cxx > BSC6000 Local Maintenance Terminal . The BSC6000

Local Maintenance Terminal window is displayed, as shown in

Figure 4-1 .

–

–

If you can find the target BSC for login from the BSC Name drop-down list, go to

Step 5

.

If you cannot find the target BSC for login from the BSC Name drop-down list, go to

Step 2

.

Figure 4-1 Login dialog box of the BSC6000 Local Maintenance Terminal

4-2

2.

Click

4-2

.

. The BSC Management dialog box is displayed, as shown in



Figure

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Figure 4-2 BSC Management dialog box

3.

Type the IP address of the BSC, the name of the BSC, and the remarks (optional) in corresponding fields. Then, click Add .

4.

Click Close to return to the Login dialog box, as shown in

Figure 4-1

.

5.

Type the user name and the password in the Name and Password text boxes. Select the BSC name from the BSC Name drop-down list, and set User Type to Local

User . Then, click OK .

l Log in to the BSC LMT through the M2000 client.

1.

Choose Start > All Programs > iManager M2000 Client > M2000 Client .

The Login

dialog box is displayed, as shown in Figure 4-3 .

Figure 4-3 Login dialog box of the M2000 client



4-3


BTS3900(A) GSM

Commissioning Guide

2.

Enter user name in User Name , enter the password in Password , and enter IP address of the server in Server . Click Login .

3.

In the iManager M2000 Mobile Element Management System window, choose

Topology > Main Topology

, as shown in Figure 4-4 .

Main Topology is displayed on the left side of the dialog box.

Figure 4-4 iManager M2000 Mobile Element Management System window

4.

Choose Physical Root on the Main Topology tab page, right-click the BSC that the

BTS belongs to, and choose Maintenance Client from the displayed shortcut menu.

The BSC6000 Local Maintenance Terminal window is displayed.

----End

4.2 Checking the Transmission and Networking

This describes how to check the transmission and networking. The purpose of checking the transmission and networking is to ensure that the BTS3900A transmission cables and hardware are correctly installed. The items to be checked consist of the transmission between the BBU and the BSC, the transmission between the BBU and the RFU, the transmission between the cascaded BTSs, and the transmission between the BTSs in ring topology.

4.2.1 Checking the Transmission Between the RRU and the BBU or Between the BBU and the

BSC on the LMT

This describes how to check the transmission between the BBU and the BSC and the transmission between the BBU and the RFU.

4.2.2 Checking the Transmission Between Cascaded BTSs

This describes how to check the transmission between cascaded BTSs when there are cascaded

BTSs on site. The following description takes the level 3 cascaded BTSs as an example, and describes how to check the transmission between cascaded BTSs.



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4.2.3 Checking the Transmission Between BTSs in Ring Topology

This describes how to check the transmission between BTSs in ring topology. The following description is based on three BTSs in ring topology.

4.2.1 Checking the Transmission Between the RRU and the BBU or

Between the BBU and the BSC on the LMT

This describes how to check the transmission between the BBU and the BSC and the transmission between the BBU and the RFU.

Procedure

Step 1 Choose BSC Maintenance > Maintain Transmission and Signaling > Maintain LAPD

Link on the LMT.

The Maintain LAPD Link dialog box is displayed.

Step 2 Select the link and site to be queried, and click Query . The result is displayed on the Query

Result window.

If...

Then...

OML links and RSL links are normal End the checking task.

OML links or RSL links are faulty


Check for the related alarm, for example, 1000

LAPD_OML Fault alarm. Then rectify the fault according to the alarm help.

The possible causes of the faulty links are as follows: l The BTS does not work properly.

l

The transmission cables between the BSC and the

RFU or BBU are damaged, or the ports to which the transmission cables are connected are faulty.

NOTE

If the BTS data has just been configured on the LMT, you should reset the BBU first. After the BBU detects the information sent by the BSC and initiates the link setup procedure, the OML link can be detected.

----End

Example l Check whether the OML link between the BBU and the BSC is normal. If the state of the

OML link is normal, the BBU is properly connected to the BSC, as shown in Figure 4-5 .



4-5


BTS3900(A) GSM

Commissioning Guide

Figure 4-5 Check whether the link between the BBU and the BSC is normal l Check whether the RSL link between the BBU and the RFU is normal. If the state of the

RSL link is normal, the BBU is properly connected to the RFU, as shown in

Figure 4-6

.

Figure 4-6 Check whether the link between the BBU and the RFU is normal

4.2.2 Checking the Transmission Between Cascaded BTSs

This describes how to check the transmission between cascaded BTSs when there are cascaded

BTSs on site. The following description takes the level 3 cascaded BTSs as an example, and describes how to check the transmission between cascaded BTSs.

Prerequisite l l

The physical connection between cascaded BTSs on the BTS side is complete.

The BTS is in TDM or HDLC transmission mode.



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Commissioning Guide

Context


Figure 4-7 shows the cascaded BTSs in the

BSC6000 Local Maintenance Terminal window.

Figure 4-7 Cascaded BTSs on the LMT

Procedure

Step 1 Check whether cascaded BTSs are configured on the LMT.

If...

Then...

Cascaded BTSs are configured Go to

Step 2

.

Cascaded BTSs are not configured See the BSC Initial Configuration Guide to configure the BTSs.

Step 2 In the left pane of the BSC6000 Local Maintenance Terminal window, select the level 2 BTS and level 3 BTS respectively. Check whether each board on the Site Device Panel tab ipage s

displayed in green, as shown in Figure 4-8 .

l If the board is displayed in green, you can infer that the board is functional. End this task.

l If the board is not displayed in green, you can infer that the transmission between cascaded

BTSs is abnormal. Go to

Step 3

.



4-7


Figure 4-8 Site Device Panel tab page

BTS3900(A) GSM

Commissioning Guide

Step 3 On the BTS side, check the physical connection between the BBU of the level 1 BTS and BBU of the level 2 BTS. Normally, the T1 of the first E1/T1 of the level 2 BTS should be connected to the R2 of the second E1/T1 of the level 1 BTS, and the R1 of the first E1/T1 of the level 2

BTS should be connected to the T2 of the second E1/T1 of the level 1 BTS.

l If the link is normal, the status of the LIU1 LED on the level 1 BTS and the LIU0 LED on the level 2 BTS changes from ON disconnected to OFF connected.

l If the link is still not normal, contact Huawei technical support engineers on the BTS side for troubleshooting.

Step 4

On the BTS side, see Step 3 to check the physical connection between the BBU of the level 2

BTS and BBU of the level 3 BTS.

----End

4.2.3 Checking the Transmission Between BTSs in Ring Topology

This describes how to check the transmission between BTSs in ring topology. The following description is based on three BTSs in ring topology.

Prerequisite

The physical connection between BTSs in ring topology on the BTS side is complete.

Context l

Figure 4-9

shows the connection between BTSs in ring topology. A, B, C, and D show the positions where the link may be broken during the ring topology transmission.



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Figure 4-9 Connection between ring topology BTSs

A B C

BTS0 BTS1

BTS2

BSC

D l

In this document, set the forward port to port 0 and reverse port to port 1.

Procedure

Step 1 Check whether of BTSs in ring topology are configured on the LMT.

If...

Then...

The ring topology is configured Go to

Step 2

.

The ring topology is not configured Configure the ring topology. For details, see the BSC

Initial Configuration Guide .

Step 2 In the BSC6000 Local Maintenance Terminal window, choose BTS Maintenance > Maintain

Site > Maintain Ring Network , and the Maintain Ring Network dialog box is displayed.

Step 3 In the Setting text box, select Site Type and level 2 BTS, and click Query . The query results are displayed in the Result area, as shown in

Figure 4-10

. Port 0 serves as the working port.

Query Result shows Ring Topology Parameter Query Success . The query result indicates that the link setup is successful and the OML receives the related data configuration.

Figure 4-10 Maintain Ring Network dialog box

Step 4 Check the switchover of the forward ring port and the reverse ring port on the LMT.

1.

In the Query Result area, right-click the level 2 BTS. A dialog box is displayed. Click

Switch . The Confirm dialog box is displayed, as shown in

Figure 4-11

.



4-9


Figure 4-11 Confirm dialog box

BTS3900(A) GSM

Commissioning Guide

4-10

2.

Click Yes , the Switchover Success dialog box is displayed. The level 2 BTS and level 3

BTS reset automatically.

3.

After the level 2 and level 3 BTS are reset, query the information about the ring topology

of the level 2 and level 3 BTSs. Figure 4-12

shows the query result. The level 3 BTS is successfully connected in the reverse direction, and the working port is changed from port

0 to port 1. You can infer that the BTS can perform the switchover from the forward ring port to the reverse ring port.

Figure 4-12 Result of the ring topology switchover (1)

4.

Step 5 Disconnect the BTSs in ring topology manually, and check the automatic switchover of BTSs in ring topology. When the physical connection between BTSs in ring topology is disconnected, the lower-level BTS at the disconnected point works in the reverse link, and the upper-level BTS works in the forward link.

1.

On the BTS side, disconnect the transmission cable between the level 1 BTS and level 2

BTS. The level 2 BTS resets automatically.

2.

After the reset of the level 2 BTS is complete, see Step 2 and Step 3 to query the information

about ring topology.

Figure 4-13

shows the query result. The working port of the level 2

BTS is changed from port 0 to port 1. You can infer that the automatic switchover of the lower-level BTS is complete.

Figure 4-13 Result of the ring topology switchover (2)



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CAUTION

In normal situations, after Step 4

or Step 5

is performed, the cascaded BTSs will automatically switch over to the forward link. If the BTSs fail to switch over to the forward link automatically, check the connections of the transmission cables, for example, the connections of the TX and

RX ends of the E1 cable.

----End

4.3 Checking Software Version and Data Configuration

This describes how to check software version and data configuration to ensure the correctness of the software version and configuration data. The items to be checked are the configuration and status of the board, the software version information, and the consistency between the hardware installation and the data configuration.

4.3.1 Checking the Board Configuration and Status on the LMT

This describes how to check the configuration and status of the BTS boards.

4.3.2 Checking the Current Software Version on the LMT

This describes how to check the current software version of the boards and modules of the BTS.

4.3.3 Checking the Consistency Between Hardware Installation and Data Configuration

This describes how to check the consistency between hardware installation and data configuration. The consistency is confirmed by checking the configuration and board status on the LMT.

4.3.1 Checking the Board Configuration and Status on the LMT

This describes how to check the configuration and status of the BTS boards.

Procedure

Step 1 Click Site Device Panel

to check the configured boards, as shown in Figure 4-14 .



4-11



BTS3900(A) GSM

Commissioning Guide

Step 2 Check the status of boards: The green color indicates that the board is Normal . The red color indicates that the board is Faulty . The white color indicates that the board is Passive , that is, the board has no input power.

Step 3 Check the board status further: Right-click the board to be queried, and then choose Query

Board Information from the shortcut menu.

The Query Board Information dialog box is displayed, as shown in

Figure 4-15

.



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Figure 4-15 Query Board Information dialog box

Step 4 Check whether Board State is Actively Normal in the Query Board Information dialog box.

If the status is Faulty , go to

Step 5 to check the alarm information.

Step 5

See 4.4 Checking the Alarm Information of the BTS (on the LMT)

to check the alarm information and clear the alarm according to the BSS Alarm Reference .

----End

4.3.2 Checking the Current Software Version on the LMT

This describes how to check the current software version of the boards and modules of the BTS.

Procedure

Step 1 In the BSC6000 Local Maintenance Terminal window, choose BTS Maintenance > Query

Board Running Software Version .

The Query Board Running Software Version dialog box is displayed.

Step 2 Select BTS3900/BTS3900A under Site Type , and select the site to be queried under Candidate

Sites , and then add the site to the Selected Sites area. Click Start to query the software version

of the BTS3900/BTS3900A boards, as shown in Figure 4-16 .



4-13


Figure 4-16 Query Board Running Software Version dialog box

BTS3900(A) GSM

Commissioning Guide

Step 3 If the software version is correct, end this task. If the software version is incorrect, update the software version through the loading and activation function of the LMT. For details, see the

BSC LMT User Guide .

----End

4.3.3 Checking the Consistency Between Hardware Installation and

Data Configuration

This describes how to check the consistency between hardware installation and data configuration. The consistency is confirmed by checking the configuration and board status on the LMT.

Context l l l

CPRI connections: The port numbers SFP0 to SFP5 in the RXU topological structure area on the LMT correspond to the ports CPRI0 to CPRI5 on the panel of the BBU.

Slots for the RFUs: On the LMT, the RFUs are configured in subrack 3. The slot numbers of the RFUs are based on the configuration sequence of the TRXs, starting from slot 0. In actual installation, the installation slot of the RFU is determined by the actual requirements.

The relations between the data configuration and the physical connections of monitoring boards connected to RS485 ports are described as follows:

–

Figure 4-17 shows the relation between data configuration and physical connection of

the BTS3900 monitoring boards.



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Figure 4-17 Relation between data configuration and physical connection of the

BTS3900 monitoring boards

Monitoring Port on the GTMU

Relation Between Data Configuration and Physical

Connection

MON0 In subrack 2, the DEMU in slot 0, DPMU in slot 2, FMUs in slot

8 and 9, and GATM in slot 16 are all connected to the MON0 port on the GTMU physically. Physical connections: The monitoring signal cable connects the MON0 port on the GTMU and one monitoring board, and the other monitoring boards are connected to this board in cascaded mode.

MON1 In subrack 2, the DEMU in slot 1, DPMU in slot 3, FMUs in slot

10 and 11, GATM in slot 17 are all connected to the MON1 port on the GTMU physically. Physical connections: The monitoring signal cable connects the MON1 port on the GTMU and one monitoring board, and the other monitoring boards are connected to this board in cascaded mode.

–

Figure 4-18 shows the relation between data configuration and physical connection of

the BTS3900A monitoring boards.



4-15


BTS3900(A) GSM

Commissioning Guide

Figure 4-18 Relation between data configuration and physical connection of the

BTS3900A monitoring boards

Monitoring Port on the GTMU

Relation Between Data Configuration and Physical

Connection

MON0 In subrack 2, the DEMU in slot 0, DPMU or APMU in slot 2,

DTCU in slot 6, FMUs or FMUAs in slot 8 and 9, and GATM in slot 16 are all connected to the MON0 port on the GTMU physically. Physical connections: The monitoring signal cable connects the MON0 port on the GTMU and one monitoring board, and the other monitoring boards are connected to this board in cascaded mode.

MON1 In subrack 2, the DEMU in slot 1, DPMU or APMU in slot 3,

DTCU in slot 7, FMUs or FMUAs in slot 10 and 11, and GATM in slot 17 are all connected to the MON1 port on the GTMU physically. Physical connections: The monitoring signal cable connects the MON1 port on the GTMU and one monitoring board, and the other monitoring boards are connected to this board in cascaded mode.

NOTE l l l

Connection between the MON0 port and the two FMUs or FMUAs: The FMU or FMUA in slot

9 is connected to the MON0 port through the FMU or FMUA in slot 8.

Connection between the MON1 port and the two FMUs or FMUAs: The FMU or FMUA in slot

11 is connected to the MON1 port through the FMU or FMUA in slot 10.

A maximum of two DEMUs, DPMUs, APMUs, DTCUs, and GATMs can be configured for each

BTS, while a maximum of four FMUs or FMUAs can be configured.

Procedure

Step 1 In the BSC6000 Local Maintenance Terminal window, click the Site Device Panel tab page to check the board configuration of the BTS.

Step 2 Check the boards status. If the configured boards are operational, the boards are shown in green, as shown in

Figure 4-19

. If the boards are shown in red, the boards are faulty.



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Commissioning Guide



Step 3 Check board status further: Right-click the board to be queried, and then choose the Query

Board Information dialog box from the shortcut menu. The Query Board Information dialog box is displayed.

Step 4 Check whether the Board State is Active Normal in the Board Information tab page, as shown in

Figure 4-20

.

l If it is Active Normal, the hardware installation and data configuration of the boards are consistent.

l If it is Faulty, check for the related alarms. For details about how to handle the alarms, see the BSS Alarm Reference .



4-17



BTS3900(A) GSM

Commissioning Guide

4-18

TIP

If...

The number of BBUs installed is different from the number of BBUs configured

Then...

The system reports E1 Local Alarm .

More RFUs are installed than those configured

Fewer RFUs are installed than those configured

The system reports SFP Port Inconsistency

Alarm .

The system reports SFP Port Inconsistency

Alarm and TRX Communication Alarm .

A board other than the BBU and RFU is configured but not installed.

The system reports **** Communication

Alarm , such as Fan Subassembly

Communication Alarm and PMU

Communication Alarm .



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If...

Then...

A board other than the BBU and RFU is installed but not configured

No alarm is reported.

----End

4.4 Checking the Alarm Information of the BTS (on the

LMT)

This describes how to check the alarm information of the BTS on the BSC6000 Local

Maintenance Terminal . If an alarm is generated, you need clear the alarm based on the suggestions in the BSS Help System.

Procedure

Step 1 Choose BTS in the navigation bar on the left pane of the BSC6000 Local Maintenance

Terminal . In the displayed Site Device Panel tab page, check whether alarms related to the

BTS boards exist. Check the status of boards: The green color indicates that the board is

Normal . The red color indicates that the board is Error

, and an alarm exists. Figure 4-21

shows the Site Device Panel tab page.



4-19



BTS3900(A) GSM

Commissioning Guide

4-20

If...

No alarm is generated

An alarm is generated

Then...

Repeat

1 to check the alarm information of other BTSs.

Go to 2

. Check the alarm generated on this BTS through Alarm

Maintenance . Clear the alarm based on the troubleshooting suggestions.

Step 2 Alarm maintenance: Check the alarms of the BTS.

1.

Choose Alarm Maintenance > Browse Alarm . The Browse Alarm dialog box is displayed.

2.

Right-click an alarm, and choose Filter Alarms...

from the shortcut menu. The Filter

Alarm Condition




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Figure 4-22 Filter Alarm Condition dialog box

3.

Choose the Site to be queried, and click OK .

4.

Double-click an alarm. The Alarm Detail Information dialog box is displayed, as shown in

Figure 4-23

.

Figure 4-23 Alarm Detail Information dialog box



4-21


BTS3900(A) GSM

Commissioning Guide

5.

Click Alarm Detail , and the BSS Help System

is displayed, as shown in Figure 4-24

. Handle the alarm according to the BSS Alarm Reference .

Figure 4-24 BSS Help System

----End

4.5 Commissioning the BTS Services

This describes how to use an MS to test whether the BTS supports CS services and PS services.

Prerequisite l l l The transmission between the BSC and the BTS is normal, and the transmission between the BSC and the LMT is normal.

The current software version and data configuration are correct.

No alarm related to disruption of BTS services is reported on the LMT.

4.5.1 Testing the CS Services

This describes how to test the CS services by making test calls between two MSs or between an

MS and a PSTN phone.

4.5.2 Commissioning PS Services

This describes how to commission PS services by website browsing and file downloading through an MS. A laptop is required to monitor the commissioning. You need to commission only the BTS that is configured with the GPRS or EGPRS services.



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4.5.1 Testing the CS Services

This describes how to test the CS services by making test calls between two MSs or between an

MS and a PSTN phone.

Prerequisite l l l

Two test MSs which support GSM are registered with the HLR.

The logical cells to be checked are activated.

The BSC functions properly.

Procedure

Step 1 Power on one test MS, and check that the MS automatically searches for the GSM network.

If...

Then...

The testing MS fails to find the GSM network

Check that the test MS is configured with the SIM card and the SIM card supports authentication and encryption.

The test MS finds the GSM network

Go to Step 2 .

Step 2 Lock the testing MS on a frequency in a logical cell under the BTS.

If...

Then...

The test lasts at least 40n minutes (n is the number of carriers)

Go to Step 3

. Conduct the call test on a special

TCH.

The test lasts less than 40n minutes

Go to Step 4 . Conduct the call test directly.

Step 3 Set the state of the TRX TCH.

1.

On the LMT, choose BTS Maintenance > Modify Administrative State . The Modify

Administrative State dialog box is displayed, as shown in

Figure 4-25

.



4-23


Figure 4-25 Modify Administrative State dialog box

BTS3900(A) GSM

Commissioning Guide

4-24

2.

Change the status of all the TRX TCHs in the cell from Unlocked to Locked. If the operation succeeds, the Succeeded in modifying the administrative state. message is displayed in the

Operation Result area.

3.

Lock the testing MS on a specific frequency. Change the state of one or two TCHs on the frequency from Locked to Unlocked. Then, conduct the call tests on this TCH.

Step 4 Conduct the call test as follows:

1.

Make a call from one MS to the other, and hook on after the conversation.

2.

Make a call from one MS to a PSTN phone, and hook on after the conversation.

3.

Make a call from a PSTN phone to one MS, and hook on after the conversation.

NOTE l l

It is recommended that each type of test calls be conducted for more than five times to ensure the results.

If time permits, it is recommended that one call test be conducted for each the channels of all the TRXs.

For detailed operations, see

Step 3

.

Step 5 Ensure that all calls are successful, the conversion is normal, and voice quality is clear.



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If...

Mobile-originated call succeeds

Mobile-originated call succeeds, and mobile-terminated call fails

Then...

1. Check the LEDs and alarms. If an alarm is generated on the BTS side, clear the alarm.

2. If an alarm is generated on the BSC side, contact BSC technical support engineers to handle it.

3. After the fault is rectified, go to Step 1

to test the CS services for another time.

The data configuration on the BSC side is improper. Contact BSC technical support engineers for troubleshooting.

Step 6 Test short message service (SMS) as follows: Use two testing MSs to send SMS messages to each other, and ensure that all the SMS messages are successfully sent and received.

Step 7 Choose a proper operation procedure based on actual conditions.

If...

Step 3

is performed

Then...

1. Repeat

Step 3 through

Step 6 to verify the CS services of other

TCHs on the same frequency.

2. Repeat steps Step 2

through Step 6

to test the CS services in other logical cells at the site.

Step 3

is not performed Repeat

Step 2 , and

Step 4

through Step 6 to verify the CS services

in other logical cells at the site.

----End

4.5.2 Commissioning PS Services

This describes how to commission PS services by website browsing and file downloading through an MS. A laptop is required to monitor the commissioning. You need to commission only the BTS that is configured with the GPRS or EGPRS services.

Prerequisite l l l l

One test MS that supports GSM and PS services is registered with the HLR.

The BTS cell to be checked is configured with the GPRS or EGPRS services.

The logical cell to be checked is activated.

The computer and the BSC work properly.



4-25


BTS3900(A) GSM

Commissioning Guide

Procedure

Step 1 Activate the GPRS or EGPRS data service with the MS. Then, commission PS services through multi-service testing. The PS service test involves sending multimedia message, browsing websites, and downloading files.

Step 2 Check whether the MS can successfully send multimedia messages, browse webpages, and download files.

If...

One of the three PS service tests is successful

Then...

The hardware on the BTS side meets the requirements for PS services.

All the three PS service tests fail Check whether the test MS works properly, for example, the test MS is configured with the SIM card or the SIM card supports authentication and encryption.

Step 3

Repeat Step 1 through Step 2

to test PS services in other cells under the BTS.

----End

4.6 Checking the BTS Environment Alarms

This describes how to check the BTS environment alarms. It also describes how to monitor the operating environment of the BTS.

4.6.1 BTS Environment Alarm Types

This describes the various types of environment alarms of the BTS. The alarms consist of the fire alarm, smoke alarm, infrared alarm, water alarm, temperature alarm, humidity alarm, airconditioner alarm, door status alarm, and burglar alarm.

4.6.2 Checking the Environment Monitoring Alarms on the LMT

This describes how to check the environment monitoring alarms. Checking the environment monitoring alarms is implemented through simulating the environment factors that may generate alarms, thus checking whether the physical connections of the BTS can report and clear the alarms. Note that the BTS technical support engineers should assist in checking the Boolean environment monitoring alarm.

4.6.1 BTS Environment Alarm Types

This describes the various types of environment alarms of the BTS. The alarms consist of the fire alarm, smoke alarm, infrared alarm, water alarm, temperature alarm, humidity alarm, airconditioner alarm, door status alarm, and burglar alarm.



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NOTE l l l

Critical alarm: devices or resources may be unusable, and restoration should be performed at once.

Major alarm: The QoS of devices or resources severely deteriorates, and measures should be taken as soon as possible.

The thresholds of temperature alarm and humidity alarm are subject to the local climate and terrain conditions and should be specified on the basis of the field requirements.

Fire Alarm

The fire alarm is the environment alarm generated when the equipment room is on fire. This is a critical alarm.

Smoke Alarm

The smoke alarm is an environment alarm generated when the smoke density in the equipment room reaches a predefined threshold. This is a critical alarm.

Infrared Alarm

The infrared alarm is an environment alarm generated when an infrared facility is taken into the equipment room or is in the infrared detection range of the cabinet. This is a major alarm.

Water Alarm

The water alarm is an environment alarm generated when water immersion occurs in the equipment room. This is a major alarm.

Temperature Alarm

The temperature alarm consists of the overtemperature alarm and the undertemperature alarm.

This is a major alarm.

l l

The overtemperature alarm is generated when the ambient temperature is higher than the predefined upper threshold of the temperature.

The undertemperature alarm is generated when the ambient temperature is lower than the predefined lower threshold of the temperature.

Humidity Alarm

The humidity alarm consists of the high humidity alarm and the low humidity alarm. This is a major alarm.

l l

The high humidity alarm is generated when the environment humidity is higher than the predefined upper threshold of the humidity.

The low humidity alarm is generated when the environment humidity is lower than the predefined lower threshold of the humidity.

Air-Conditioner Alarm

The air-conditioner alarm is generated when the air-conditioner is not running properly or the

AC power supply is not normal. This is a major alarm.



4-27


BTS3900(A) GSM

Commissioning Guide

Door Status Alarm

The door status alarm is an environment alarm generated when the door of the equipment room or the door of the cabinet is opened. This is a major alarm.

Burglar Alarm

The burglar alarm is generated when the infrared alarm or door status alarm occurs. This is a critical alarm.

4.6.2 Checking the Environment Monitoring Alarms on the LMT

This describes how to check the environment monitoring alarms. Checking the environment monitoring alarms is implemented through simulating the environment factors that may generate alarms, thus checking whether the physical connections of the BTS can report and clear the alarms. Note that the BTS technical support engineers should assist in checking the Boolean environment monitoring alarm.

Context

The BTS3900 GSM supports the monitoring boards of the DEMU, DPMU, FMU, and GATM.

Besides the monitoring boards of the BTS3900 GSM, the BTS3900A GSM also supports the

APMU, FMUA, and DTCU.

Table 4-1

describes the detailed configuration.

Table 4-1 Monitoring boards of the BTS3900 and the BTS3900A

Slot in

Subrack 2

BTS3900

GSM

0 1 2 3 4 5 6 7 8 9 1

D

E

M

U

D

E

M

U

D

P

M

U

D

P

M

U

F

M

U

F

M

U

0

F

M

U

1

1

F

M

U

BTS3900A

GSM

D

E

M

U

D

E

M

U

D

P

M

U o r

A

P

M

U

D

P

M

U o r

A

P

M

U

D

T

C

U

C

U

D

T

U o r

F

M

U

A

F

M

U o r

F

M

U

A

F

M

U o r

F

M

U

A

F

M

U o r

F

M

U

A

F

M

1

2

1

3

1

4

1

5

1

6

1

7

G

A

T

M

G

A

T

M

G

A

T

M

G

A

T

M

Procedure

4-28 l Commissioning the Boolean alarm (Door Open Alarm of the DEMU)



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Alarm switch enabled and alarm switch valid level are required to be noted when checking the Boolean alarm both on the SMT and the LMT. The following part takes the Door Open

Alarm of the DEMU as an example to describe the procedure for testing the Boolean alarm.

NOTE l l

Trigger conditions of the Door Open Alarm : When the cabinet door of the BTS is open, the

DEMU reports Door Open Alarm ; when the cabinet door of the BTS is closed, the Door Open

Alarm is cleared.

Disable the Door Open Alarm and configure the alarm valid level: When the Door Open

Alarm is disabled, the DEMU does not report the Door Open Alarm . In other words, the Door

Open Alarm is shielded. Alarm valid level configuration specifies the valid level of the door sensor alarm, which is determined by the attribute of the field Gate Magnetism.

l On the LMT, choose Alarm Maintenance > Browse Alarm . Check the alarm information in the displayed Browse Alarm dialog box.

1.

Check whether the Door Open Alarm can be reported normally by opening the cabinet door of the BTS and be cleared normally by closing the cabinet door of the

BTS.

–

If the alarm can be reported and cleared normally, end the checking task.

–

If the alarm cannot be reported, go to Step 2 to check the data configuration of the

Gate Magnetism.

TIP

If the valid level of the door sensor alarm on site is inconsistent with the valid level of the door sensor alarm based on the data configuration, the reported alarms are opposite. For example, if the valid level of the door sensor alarm on site is high and the configured valid level is low, then:

When the cabinet door of the BTS is closed, the DEMU reports the Door Open Alarm ; when the cabinet door of the BTS is open, the Door Open Alarm is cleared.

2.

In the BSC6000 Local Maintenance Terminal window, right-click the site to be queried and choose Configure Site Board Attributes . The Configure Site Board

Attributes dialog box is displayed.

3.

Click Configure Site Board Attributes , the Site Device Attributes dialog box is displayed.

4.

Right-click DEMU , choose Configure Site Board Attributes . The Basic Attributes of Site Board dialog box is displayed.

5.

Click the Configure Site Board Attributes tab. Then set Board Parameter

Configuration Enabled to Yes. Click Special Alarm Switch Enabled to check

whether Gate Magnetism(Disabled) is selected, as shown in Figure 4-26 .

–

–

In normal conditions, the check box Gate Magnetism(Disabled) is deselected, which means it is enabled and the Door Open Alarm is reported once the alarm is generated.

If the check box Gate Magnetism(Disabled) is selected, deselect the check box.



4-29


Figure 4-26 Basic Attributes of Site Board (1)

BTS3900(A) GSM

Commissioning Guide

6.

Click Special Alarm Switch Valid Level Configuration in the Basic Attributes of

Site Board dialog box. Check whether the configuration of the Gate Magnetism(Low

Level) is consistent with the actual alarm switch valid level of the Gate Magnetism,

as shown in Figure 4-27 . If the alarm switch valid level of the field Gate Magnetism

is high level, then

–

In normal conditions, the check box Gate Magnetism(Low Level) is deselected, which means the Door Open Alarm is reported at a high level.

–

If the check box Gate Magnetism(Low Level) is selected, deselect the check box.



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7.

When the checking is complete, check whether the Door Open Alarm can be reported normally by opening the cabinet door of the BTS and be cleared normally by closing the cabinet door of the BTS.

–

If the alarm can be reported and cleared normally, end the checking task.

–

If the alarm cannot be reported, reconnect the related monitoring signal cable. For details, see the BTS3900 Quick Installation Guide or the BTS3900A Quick

Installation Guide .

l Commissioning the alarm reported through the RS485 port (temperature monitoring alarm of the DTCU)

The following part takes the temperature monitoring of the DTCU as an example to describe the commissioning of the temperature monitoring alarm of the monitoring board.

NOTE l Trigger conditions of Temperature Too High Alarm: When the actual temperature of DTCU exceeds the High Temperature Alarm Threshold , the DTCU reports the Temperature Too High Alarm.

l Trigger condition of Temperature Too Low Alarm: When the actual temperature of DTCU exceeds the Low Temperature Alarm Threshold , the DTCU reports the Temperature Too Low Alarm.

l On the LMT, choose Alarm Maintenance > Browse Alarm . Check the alarm information in the displayed Browse Alarm dialog box.

1.

On the LMT, query the ambient temperature of the BTS DTCU.

(1) In the BSC6000 Local Maintenance Terminal window, select the site to be queried. Right-click the monitoring board to be queried on the Site Device



4-31


BTS3900(A) GSM

Commissioning Guide

Panel tab page and choose Query Board Information . The Query Board

Information dialog box is displayed.

(2) Click the Running Parameter tab, and then click Query on the Running

Parameter tab. The query is successful, and the running status of the board is displayed in the dialog box. The current Environment Temperature is

28.0

℃ , as shown in

Figure 4-28

.


4-32

2.

On the LMT, set the High Temperature Alarm Threshold to a value lower than the normal temperature to trigger the alarm.

(1) In the BSC6000 Local Maintenance Terminal window, right-click the site to be queried and choose Configure Site Board Attributes . The Configure Site

Board Attributes dialog box is displayed.

(2) Click Configure Site Board Attributes , the Site Device Attributes dialog box is displayed.

(3) Right-click DTCU and choose Configure Site Board Attributes . The Basic

Attributes of Site Board dialog box is displayed.



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(4) Click Configure Site Board Attributes tab. Then set Board Parameter

Configuration Enabled to Yes and set High Temperature Alarm Threshold

to 25.0, as shown in Figure 4-29 .


(5) Click OK to complete the setting of the temperature alarm threshold.

3.

Check the alarm information of the DTCU. For details, see 4.4 Checking the Alarm

Information of the BTS (on the LMT)

. If the DTCU reports Temperature Too

High Alarm , the ambient temperature alarm can be reported normally. If the alarm cannot be reported normally, reconnect the related monitoring signal cables. For details, see the Quick Installation Guide .

4.

Set High Temperature Alarm Threshold again to clear Temperature Too High

Alarm . For details, see

Step 2

.

----End



4-33

BTS3900(A) GSM

Commissioning Guide 5 Commissioning the BTS (Transmission Unavailable)

5

Commissioning the BTS (Transmission

Unavailable)


This describes how to commission the BTS in the transmission unavailable scenario. The commissioning of the BTS consists of two phases. In the initial phase of the commissioning, the transmission cable between the BSC and the BTS is not properly connected. Commission the

BTS at the local end. In the later phase of the commissioning, the transmission cable between the BSC and the BTS is properly connected. Commission the BTS on the BSC side.

5.1 Starting the Site Maintenance Terminal

This describes how to start the SMT. To start the SMT, you need to set the IP address of the

SMT PC, connect the SMT PC to the BTS, and then log in to the SMT.

5.2 Configuring the Basic Data of the BTS

This describes how to configure the basic data of the BTS such as the BTS boards and logical objects of the site. If the commissioning is performed on the BTS side, other commissioning tasks can be performed only after the configuration of the basic data of the BTS.

5.3 Checking the Active Software Version on the SMT

This describes how to check the software versions of the boards and modules in the BTS in the

Site Maintenance Terminal System window.

5.4 Checking the Transmission Between the BBU and RFU on the BTS Side

This describes how to check the transmission between the BBU and the RFU on the BTS side.

By checking the link status of the BBU and RFU, you can rectify the fault caused by abnormal connection, thus ensuring normal communication between the BBU and the RFU.

5.5 Checking the Running Status of the BTS

This describes how to check the running status of the BTS. Check the running status of the BTS involves checking the status of LEDs and alarm information on the SMT.

5.6 Checking the Hardware Connection of the BTS

This describes how to check the hardware connection of the BTS by checking the connection of power cables, grounding cables, and all kinds of signal cables.



5-1

5 Commissioning the BTS (Transmission Unavailable)

BTS3900(A) GSM

Commissioning Guide

5.1 Starting the Site Maintenance Terminal

This describes how to start the SMT. To start the SMT, you need to set the IP address of the

SMT PC, connect the SMT PC to the BTS, and then log in to the SMT.

5.1.1 Setting the IP Address of the Site Maintenance Terminal PC

This describes how to set the IP address of the SMT PC to the same network segment as the IP address (192.168.0.72/255.255.255.0) of the BTS.

5.1.2 Locally Connecting the SMT PC to the BTS

This describes how to connect the Site Maintenance Terminal (SMT) PC to the ETH port on the main control module of the BTS through an Ethernet cable. After they are connected, you can operate and maintain the BTS on the SMT.

5.1.3 Logging in to the BTS at the Local End

This describes how to log in to the BTS. You can run the SMT to directly log in to the BTS at the local end.

5.1.1 Setting the IP Address of the Site Maintenance Terminal PC

This describes how to set the IP address of the SMT PC to the same network segment as the IP address (192.168.0.72/255.255.255.0) of the BTS.

Prerequisite

The TCP/IP protocol is installed on the SMT PC.

Procedure

Step 1 To set the IP address of the PC, perform the following steps where the Windows XP operating system is taken as an example: On Windows XP, choose Start > Setting > Control Panel .

Step 2 Double-click Network Connections in the displayed Control Panel window. Right-click Local

Area Connection in the displayed dialog box.

Step 3 Choose Properties from the shortcut menu. The Local Area Connection Properties dialog box is displayed.

Step 4 Select Internet Protocol (TCP/IP) , and click Properties . The Internet Protocol (TCP/IP)

Properties dialog box is displayed.

Step 5 Select Use the following IP address .

Step 6 Enter the correct IP address, subnet mask, and default gateway. Ensure that the IP address of the

SMT PC is in the same network segment as the IP addresses (192.168.0.72/255.255.255.0) of the BTS so that a maintenance channel on the BTS side can be established.

Step 7 Click OK to complete the settings.

----End



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5.1.2 Locally Connecting the SMT PC to the BTS

This describes how to connect the Site Maintenance Terminal (SMT) PC to the ETH port on the main control module of the BTS through an Ethernet cable. After they are connected, you can operate and maintain the BTS on the SMT.

Prerequisite

Procedure

Step 1 Connect the SMT PC to the BTS through an Ethernet cable. One end is connected to the ETH port on the main control board of the basic cabinet, and the other end is connected to the Ethernet port on the SMT PC (usually a portable PC).

Step 2 Open the MS-DOS Prompt dialog box.

l If the PC is Windows 2000/XP operating system based, choose Start > Run on the SMT. In the Run dialog box, run the cmd command. The MS-DOS Prompt dialog box is displayed.

Step 3 Run ping 192.168.0.72

to verify the network connection between the computer and the BTS.

l l

NOTE

The IP address of the BTS is 192.168.0.72

.

If the information similar to that in the following example is returned, the SMT PC and the

BBU can communicate normally.

Pinging 192.168.0.72 with 32 bytes of data:

Pinging 192.168.0.72 with 32 bytes of data:

Reply from 192.168.0.72: bytes=32 time=1ms TTL=253




Ping statistics for 192.168.0.72:

Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

Minimum = 1ms, Maximum = 1ms, Average = 1ms

If the SMT PC and the BBU fail to communicate, the possible reason is as follows:

–

The GTMU is faulty.

–

The Ethernet cable is faulty, or its connectors are loose.

–

The Ethernet port on the SMT PC is faulty.

–

The BTS is resetting.

–

The IP address is incorrect.

----End

5.1.3 Logging in to the BTS at the Local End

This describes how to log in to the BTS. You can run the SMT to directly log in to the BTS at the local end.

Prerequisite

The IP address and subnet mask of the SMT PC are set correctly. The IP address is in the same network segment as the IP address (192.168.0.72/255.255.255.0) of the BTS.

l The SMT PC is properly connected to the BTS.



5-3

5 Commissioning the BTS (Transmission Unavailable) l

The latest software of the SMT is installed in the SMT PC.

BTS3900(A) GSM

Commissioning Guide

Procedure

Step 1 Start the SMT.

l If the SMT PC communicates with the BTS normally, a window is displayed, as shown in

Figure 5-1

. The SMT is successfully started.

l If the SMT PC cannot communicate with the BTS, the Communication failed dialog box

is displayed, as shown in Figure 5-2 . Go to Step 2 .

Figure 5-1 Site Maintenance Terminal system window

Figure 5-2 Communication failed dialog box

5-4

Step 2 Click Yes .



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BTS3900(A) GSM


The Set Communication Port Parameter dialog box is displayed, as shown in

Figure 5-3

.

Figure 5-3 Set Communication Port Parameter dialog box

Step 3 In the Select Communication Port area, click Network Port . In the Configure IP area, set the

IP address to 192.168.0.72

.

Step 4 Click OK .

The Site Maintenance Terminal System window is displayed, as shown in Figure 5-1 .

Step 5 In the Site Maintenance Terminal System window, click User , and select User Login . Enter

User Name (Omc by default) and User Password (omc by default). Logging in to the BTS succeeds.

----End

5.2 Configuring the Basic Data of the BTS

This describes how to configure the basic data of the BTS such as the BTS boards and logical objects of the site. If the commissioning is performed on the BTS side, other commissioning tasks can be performed only after the configuration of the basic data of the BTS.

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5.2.1 Obtaining the Site Management Rights

This describes how to obtain the site management rights. Before configuring the BTS board and site logical objects, you must obtain the site management rights after logging into the BTS at the local end.

5.2.2 Configuring the Boards of the BTS on the SMT

This describes how to configure the TRX boards and other boards of the BTS.

5.2.3 Configuring Logical Objects of the BTS on the SMT

This describes how to configure logical objects of the BTS. The BTS logical object configuration consists of the cell configuration, carrier binding, and activation of cell configuration data.



5-5


BTS3900(A) GSM

Commissioning Guide

5.2.1 Obtaining the Site Management Rights

This describes how to obtain the site management rights. Before configuring the BTS board and site logical objects, you must obtain the site management rights after logging into the BTS at the local end.

Prerequisite

You have logged in to the BTS successfully through the SMT.

Procedure

Step 1 In the Site Maintenance Terminal System window, select Site , and double-click Site

Management Right .

The Site Management Right dialog box is displayed.

Step 2 Click Obtain . The Warning Message


Figure 5-4 Warning message for obtaining the site management right

Step 3 Click OK , and wait for the response.

l

If the obtaining succeeds, a dialog box is displayed, as shown in Figure 5-5 .

l If the engineers are configuring or managing the BTS data on the LMT, you cannot obtain the site management rights successfully. In this case, wait till the engineers finish the

operation on the LMT, and then repeat Step 2 and Step 3 to obtain the site management

rights.

Figure 5-5 Site Management Right dialog box



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BTS3900(A) GSM


Step 4 Click Close to close the Site Management Right dialog box.

CAUTION

After the commissioning task in the transmission unavailable scenario is complete, you should release the site management rights. Otherwise, the BTS cannot be monitored on the LMT in fifteen minutes.

The procedure for releasing the site management rights is as follows:

Click Release in the Site Management Right dialog box. When Releasing site management right successfully.

is displayed, click Close to close the dialog box.

----End

5.2.2 Configuring the Boards of the BTS on the SMT

This describes how to configure the TRX boards and other boards of the BTS.

Context

Table 5-1

shows the types of TRXs that can be configured on the BTS3900 GSM or BTS3900A

GSM.

Table 5-1 TRX types configured on the BTS3900 GSM or the BTS3900A GSM

BTS Type TRX Type

BTS3900 GSM DRRU, DRFU, GRRU, and GRFU

BTS3900A GSM DRRU, DRFU, GRRU, and GRFU

NOTE

The following description takes one DRFU of the CPRI0 port as an example to describe the configuration of the TRX board. One DRFU of the CPRI0 port is configured on the first level of the SPF0 link.

Procedure

Step 1 Click Board in the navigation pane.

The Board Configuration and Board Management windows are displayed.

Step 2 Double-click Board Configuration .

The Board Configuration window is displayed, as shown in

Figure 5-6 .



5-7


Figure 5-6 Board Configuration window

BTS3900(A) GSM

Commissioning Guide

NOTE

In the transmission unavailable scenario, no site information is configured, thus, there is only the GTMU in the Board Configuration window. The status of the GTMU is Active abnormal .

Step 3 Double-click GTMU .

The Topology Configuration window is displayed, as shown in

Figure 5-7 .

Figure 5-7 Topology Configuration window

5-8

Step 4 Click Add RRU .

Set the parameters in the Deploy DRRU dialog box, as shown in

Figure 5-8 . Set

Card Type to DRFU , Card No.

to 0 , SFP No.

to 0 , and Hop No.

to 1 . These values are taken only as an example in this section.



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BTS3900(A) GSM

Commissioning Guide

Figure 5-8 Deploy DRRU dialog box


NOTE

Card Type refers to the DRRU, DRFU, MRRU, GRRU, MRFU, or GRFU. The card number starts from

0 in sequence. The SFP number ranges from 0 to 5 and each number refers to the SFP port where the board is configured. The hop number ranges from 1 to 6 and each number refers to the level of the TRXs under the same SFP number.

Step 5 Click OK . The configuration of the RF module is complete.

Figure 5-9

shows the Topology Configuration window.

Figure 5-9 Topology Configuration window

Step 6 Click Close to return to the Board Configuration window. Right-click the slot where the board is configured, and choose the board to be configured from the shortcut menu.

Configure the APMU/DPMU , FMU , and GATM as shown in

Figure 5-10

.



5-9


Figure 5-10 Board Configuration window

BTS3900(A) GSM

Commissioning Guide

Step 7 Set the parameters: On the SMT, the parameter of DEMU cannot be set. The parameters of

DEMU and DPMU are set by default, therefore, no parameter setting is required.

Step 8 Configure the APMU: The APMU is added for the BTS3900A GSM. Perform the following steps to configure the new types of APMU , such as APM100 and APM30.

1.

Click Board in the navigation pane.

The Board Configuration and Board Management windows are displayed.

2.

Double-click Board Management . The Board Management window is displayed.

3.

In the Board Management window, right-click APMU , and then click Parameter

Management .

The Parameter Management dialog box is displayed.

4.

In the Parameter Management dialog box, click Parameter Set . Select APM30 or other boards under APMU Type

according to the configuration data, as shown in Figure 5-11

.



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BTS3900(A) GSM


Figure 5-11 Parameter Management dialog box

Step 9 Click Close to end the board configuration of the BTS.

----End

5.2.3 Configuring Logical Objects of the BTS on the SMT

This describes how to configure logical objects of the BTS. The BTS logical object configuration consists of the cell configuration, carrier binding, and activation of cell configuration data.

Context

NOTE

The following part describes the configuration and binding of carriers based on one DRFU configured with two carriers.

Procedure

Step 1 Add a cell. Click Site0 , and double-click Site Configuration in the Function area.

The Site Configuration dialog box is displayed, as shown in

Figure 5-12 .



5-11


Figure 5-12 Site Configuration dialog box (1)

BTS3900(A) GSM

Commissioning Guide

Step 2 Click Site0 , and then click Add Subobject . In the Object Attributes area, specify Object

No.

and Object Name .

In the Object Operation area, Cell0 is added, as shown in

Figure 5-13 .



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BTS3900(A) GSM



Step 3 Bind the carrier. Click Cell0 , and select the TRX to be configured in the Boardtype drop-down list box. Set the board type to DRFU , as shown in

Figure 5-14

.



5-13



BTS3900(A) GSM

Commissioning Guide

Step 4 Click Add Subobject . In the Object Attributes area, specify Object No.

, Object Name , Board

No.

, and Pass No.

. Carrier0 is added in the Object Operation area. The carrier is bound to pass 0 of the TRX whose board number is 0, as shown in

Figure 5-15

. Pass 0 is also called carrier A. The number of paths at an RFU depends on the number of carriers configured for the

RFU.



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BTS3900(A) GSM



Step 5 Configure the second carrier: Set Object Name to Carrier1 , Board No.

to 0 , and Pass No.

to

1 , as shown in

Figure 5-16

. The DRFU 0 is configured with two carriers.



5-15



BTS3900(A) GSM

Commissioning Guide



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BTS3900(A) GSM


NOTE l l l l

The procedure for adding carriers for other TRX boards is the same as adding carrier for the DRFU.

The GRFU can be configured with 6 carriers, that is, there are 6 pass numbers ranging from 0 to 5 for the same board number. The GRRU can be configured with 8 carriers, that is, there are 8 numbers ranging from 0 to 7 for the same board number.

The GRRU has two tributaries: tributary A and tributary B. For other TRXs, there is only one tributary.

Therefore, you can configure the carrier according to the configuration data.

The SMT provides the self-check function. When an invalid value is specified, the User Error dialog box is displayed, as shown in

Figure 5-17 .

Figure 5-17 User Error dialog box

Step 6 Click Site0 .

The Set button is available. Click Set , Configuring cell succeeded is available, as shown in

Figure 5-18

.



5-17



BTS3900(A) GSM

Commissioning Guide

Step 7 Close the dialog box.

The configured cell is displayed in the navigation pane, as shown in Figure 5-19 . The data is configured but not activated. To activate the data, go to Step 8 .



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BTS3900(A) GSM

Commissioning Guide

Figure 5-19 Configured cell and channels


Step 8 Choose Site0 > Site Opstart > OK . The Site Opstart dialog box is displayed, as shown in

Figure 5-20

.

If...

Then...

Site Opstart successfully. is displayed Click close to perform the next step.

Site startup fails

1. Repeat Step 8 . If the operation succeeds, go to

Step 9

. If the operation still fails, go to 8.2

.

2. Check whether there is any inconsistent data configuration. If there is, modify the inconsistent data configuration. If the data configuration is correct, contact the BTS technical support engineers for troubleshooting.



5-19


Figure 5-20 Site Opstart dialog box

BTS3900(A) GSM

Commissioning Guide

Step 9 Choose Cell0 > Cell Opstart > OK . The Cell Opstart dialog box is displayed, as shown in

Figure 5-21

.

If...

Cell Opstart successfully. is displayed

Cell startup fails

Then...

Click

See

close

Step 8

to perform the next step.

for further operation.

Figure 5-21 Cell Opstart dialog box

5-20

Step 10 The site configuration takes effect.

Step 11 Make the attributes of other TRXs take effect: Choose BT0 > BT Opstart > OK . The BT

Opstart dialog box is displayed, as shown in

Figure 5-22

.



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Commissioning Guide

If...

BT Opstart successfully. is displayed

BT startup fails


Then...

Click

See close

Step 8

to perform the next step.


Figure 5-22 BT Opstart dialog box

Step 12 Choose RC0 > RC Attributes Management . Specify frequency in ARFCN , and click Set .

Getting RC attributes succeeded is displayed. Click Close .

Repeat the procedure of Step 12 to set the frequencies of other TRXs. Figure 5-23

shows the

RC Attributes Management dialog box.

Figure 5-23 RC Attributes Management dialog box



5-21


BTS3900(A) GSM

Commissioning Guide

Step 13 Choose RC0 > RC Opstart > OK . The RC Opstart

dialog box is displayed, as shown in Figure

5-24

.

If...

Then...

RC Opstart successfully. is displayed Click Close

. Repeat Step 13 to make the frequency

settings of other RCs take effect.

RC startup fails See

Step 8


Figure 5-24 RC Opstart successfully dialog box

Step 14 SFP Port Inconsistency Alarm is cleared. Since the transmission is unavailable, LAPD

Alarm persists, and the status of the GTMU is Active abnormal , as shown in

Figure 5-25

.

Figure 5-25 Board Management window



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Commissioning Guide

----End


5.3 Checking the Active Software Version on the SMT

This describes how to check the software versions of the boards and modules in the BTS in the

Site Maintenance Terminal System window.

Procedure

Step 1 In the left pane of the Site Maintenance Terminal System window, select Board . In the right pane of the window, double-click Board Management .

The Board Management window is displayed, as shown in

Figure 5-26

.

Figure 5-26 Board Management window (1)

Step 2 Select a board or a module to be checked.

If...

The DRFU is to be viewed

Then...

Go to

Step 3

.

The GTMU, GATM, or PMU is to be viewed Go to

Step 4

.

Step 3 Double-click GTMU in the Board Management window. The Topology Management

window is displayed, as shown in Figure 5-27 . Right-click

DRFU0 , and then click Board

Information . The query is successful. The Board Information dialog box is displayed, as shown in

Figure 5-28

. Check the software version. If the version needs to be upgraded, reload and activate the version, and then close the dialog box.



5-23


Figure 5-27 Topology Management window

BTS3900(A) GSM

Commissioning Guide

Figure 5-28 Board Information dialog box (1)

5-24

Step 4 Take the GTMU as an example. Right-click GTMU , and choose Board Information from the shortcut menu.

The Board Information

dialog box is displayed, as shown in Figure 5-29

. Check the software version. If the software version is not correct, upgrade the software version. For details, see the

Software Upgrade Guide .



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Figure 5-29 Board Information dialog box (2)

----End

5.4 Checking the Transmission Between the BBU and RFU on the BTS Side

This describes how to check the transmission between the BBU and the RFU on the BTS side.

By checking the link status of the BBU and RFU, you can rectify the fault caused by abnormal connection, thus ensuring normal communication between the BBU and the RFU.

Context

In this document, RFUs are classified into two types: DRFUs and GRFUs.

Procedure

Step 1 Check the status of the CPRI0 LED on the GTMU panel of the BBU and the status of the

CPRI0 and CPRI1 LEDs in the RFU panel.

If...

All the LEDs are in the on in green status

Then...

The communication between the CPRI0 port on

the BBU and the RFU is normal. Go to Step 4 .



5-25


BTS3900(A) GSM

Commissioning Guide

If...

Then...

Some LEDs are not in the on in green status

The communication between the CPRI0 port on

the BBU and the RFU is faulty. Go to Step 2 .

NOTE

The status of the LED corresponding to the CPRI port that is not in use should be OFF .

Step 2 Check the connection between the RFU and the BBU.

1.

Check that one end of the CPRI signal cable is securely connected to the CPRI0 port on the RFU, and the other end is securely connected to the CPRI port on the BBU.

2.

Check the SFP male connectors at both ends of the CPRI signal cable. If the connector is faulty, replace it.

3.

If the LEDs is still in the on in green status, replace the optical module of the CPRI port.

Step 3 Check the connection between the cascaded RFUs.

1.

Check that the signal cables between cascaded RFUs are securely connected to the

CPRI0 and CPRI1 ports.

2.

Check the SFP male connectors at both ends of the signal cables between cascaded RFUs.

If the connector is faulty, replace it.

3.

If the LEDs is still in the on in green status, replace the optical module connected to the

CPRI port.

Step 4

Repeat Step 1

through Step 3

to check the transmission between other CPRI ports on the GTMU panel and other RFUs.

----End

5.5 Checking the Running Status of the BTS

This describes how to check the running status of the BTS. Check the running status of the BTS involves checking the status of LEDs and alarm information on the SMT.

5.5.1 Checking the State of the BTS LEDs

To determine the running status of the BTS boards or modules, you need to check the state of the LEDs on them. The LEDs are distributed on the following boards or modules: GTMU

(mandatory), UBFA, UPEU, RFU, GATM (optional), FAN unit, PMU, PSU (AC/DC), and PSU

(DC/DC).

5.5.2 Checking the Alarm Information of the BTS on the SMT

This describes how to check the BTS alarms on the SMT. If an alarm is generated, you need to clear the alarm according to the handling suggestions on the SMT.

5.5.1 Checking the State of the BTS LEDs

To determine the running status of the BTS boards or modules, you need to check the state of the LEDs on them. The LEDs are distributed on the following boards or modules: GTMU

(mandatory), UBFA, UPEU, RFU, GATM (optional), FAN unit, PMU, PSU (AC/DC), and PSU

(DC/DC).



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Prerequisite

The output power of the TRX is within the normal range, and the RFU operates properly.

Context l l

The PSU (AC/DC) that converts 220 V AC power into -48 V DC power is used when the external 220 V AC power input is used.

The PSU (DC/DC) that converts +24 V AC power into -48 V DC power is used when the external +24 V AC power input is used.

Procedure

Step 1

Check the state of the LEDs on the boards or modules in the BBU. Table 5-2 lists the normal

states of the LEDs on the boards or modules.

Table 5-2 Normal states of the LEDs on the board and modules in the BBU

Board or

Module

GTMU

LED

RUN

Color

Green

Normal State

Blinking (ON for 1s and OFF for 1s)

ALM

ACT

Red

Green

LIU0 to LIU3 Green

OFF

ON

CPRI0 to

CPRI5

Green

LEDs LIU0 to LIU3 represent the four E1 links. If the links are connected normally, LIU

LEDs are OFF . If the links are not connected to the BSC yet or the transmission is unavailable, LIU LEDs are ON .

When CPRI0 to CPRI5 ports are not in use, the LEDs are OFF . When the BBU is normally connected to the RFU, the corresponding LED is ON .

UBFA

UPEU

STATE

RUN

Green

Green


ON

Step 2

Check the state of the LEDs on the RFU panel. Table 5-3 takes the DRFU as an example to list

the normal states of the LEDs on the RFU panel.

Table 5-3 Normal states of the LEDs on the DRFU

LED

RUN

ALM

-

-

Color Normal State


OFF

ACT

VSWR

-

Red

ON steady: The DRFU works properly.

OFF



5-27


5-28

LED

CPRI0

CPRI1

Color

Green

Green

BTS3900(A) GSM

Commissioning Guide

Normal State

If the DRFU is normally connected to the

BBU or another RFU, the LED is ON . If the

DRFU is not connected, the LED is OFF .

If the DRFU is normally connected to the

BBU or another RFU, the LED is ON . If the

DRFU is not connected, the LED is OFF .

NOTE

The LEDs on other RFUs have the same states as those on the DRFU, but the silkscreens of some LEDs are different.

Step 3

Check the status of the LEDs on the GATM panel. Table 5-4 lists the normal status of the LEDs.

Table 5-4 Normal states of the LEDs on the GATM

LED Color Normal State

RUN Green Blinking (ON for 1s and OFF for 1s)

ACT

ALM

Green

Green

Red

ON: The AISG link is available.

Blinking quickly: The AISG link is in transmission status.

OFF

Step 4 Check the states of the LEDs on the FAN unit panel.

Table 5-5 lists the normal states of the

LEDs.

Table 5-5 Normal states of the LEDs on the FAN unit

LED

RUN

Color

Green

Normal State


OFF ALM Red

Step 5 Check the state of the LEDs on the PMU panel.

Table 5-6

lists the normal states of the LEDs on the PMU.

Table 5-6 Normal states of the LEDs on the PMU

LED

RUN

Color

Green

Normal State


OFF ALM Red

Step 6

Check the state of the LEDs on the PSU (AC/DC) or PSU (DC/DC) panel. Table 5-7 lists the

normal states of the LEDs on the PSU.



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BTS3900(A) GSM


Table 5-7 Normal states of the LEDs on the PSU

PSU LED Color

PSU (AC/DC) Power input LED

(top)

Green

Yellow

PSU (DC/DC)

Power protection

LED (middle)

Power failure LED

(bottom)

Power input LED

(left)

Red

Green

Power protection

LED (middle)

Power failure LED

(right)

Yellow

Red

Normal State

ON

OFF

OFF

ON

OFF

OFF

Step 7 If the LEDs on the boards or modules are not in the normal state, check the alarm information on the SMT and rectify the faults according to the suggestions displayed.

----End

5.5.2 Checking the Alarm Information of the BTS on the SMT

This describes how to check the BTS alarms on the SMT. If an alarm is generated, you need to clear the alarm according to the handling suggestions on the SMT.

Procedure

Step 1 In the left pane of the Site Maintenance Terminal System window, choose Board . In the right pane of the window, double-click Board Management .

The Board Management window is displayed, as shown in

Figure 5-30

.



5-29


Figure 5-30 Board Management window

BTS3900(A) GSM

Commissioning Guide

Step 2 Check the type of the board or module where alarms are generated.

If...

Then...

The board or module is RFU

Go to Step 3 to query the alarms.

The board or module is GTMU, UBFA, UPEU, UEIU,

GATM, or PMU

Go to Step 4 to query the alarms.

Step 3 In the Board Management window, double-click GTMU .

The Topology Management window is displayed, as shown in

Figure 5-31

.



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Figure 5-31 Topology Management window

Step 4 Right-click the board or module to be queried, and choose Board Alarm .

The Board Alarm Information dialog box is displayed. Click the red grid, then the details about

the alarm are displayed in the right pane, as shown in Figure 5-32

.

Figure 5-32 Board Alarm Information dialog box



5-31


BTS3900(A) GSM

Commissioning Guide

NOTE

Each red grid represents an alarm.

Step 5 Perform the next operation according to the result displayed in the Board Alarm

Information dialog box.

If...

No alarm is generated

Then...

Close the Board Alarm Information dialog box.

Repeat steps

Step 2

through Step 5 and query

alarms generated in other boards or modules.

An alarm is generated Clear the alarm based on the troubleshooting suggestions.

NOTE

When the transmission is unavailable, which indicates that the BTS is not connected to the BSC, certain alarms are generated in common cases. These alarms are the E1 Local Alarm of the GTMU, the SW Not

Activated Alarm , the LAPD Alarm , and the SFP Port Inconsistency Alarm . The SFP Port

Inconsistency Alarm is reported only when the TRX is connected but not configured or is configured but not connected.

----End

5.6 Checking the Hardware Connection of the BTS

This describes how to check the hardware connection of the BTS by checking the connection of power cables, grounding cables, and all kinds of signal cables.

Procedure

Step 1 For checking the connection of power cables and grounding cables, see

Table 5-8

.

Table 5-8 Checklist for the connection of the power cables and grounding cables

SN Check Item

1 The unused connectors of the power cables are capped.

2

3

The PGND cable is green and yellow. The DC grounding cable is black.

The -48 V DC power cable is blue. The cross-sectional area of the PGND cable is 16 mm 2 .

All the power cables and grounding cables are copper-core cables. The outer diameter of the external power cables and grounding cables is about

11 mm.

4

5

The power cables and grounding cables are not short-circuited or reversely connected.

The power cables and grounding cables are bound separately from other cables.



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BTS3900(A) GSM


SN

6

7

8

9

10

11

12

13

14

15

16

Check Item

Labels are attached to both ends of the power cables and grounding cables.

The power cables and grounding cables are not damaged or broken.

There are no connectors or joints on the power cables or grounding cables.

There are no breaking equipment, such as switches and fuses, in the electrical connection of the grounding system.

The redundant part of the power cables or grounding cables is stripped off rather than coiled.

The lugs on both ends of the power cables or grounding cables are soldered or crimped securely.

Bare wires and lug handles at the wiring terminals are tightly wrapped with insulating tapes or heat-shrinkable tubes.

The flat washers and spring washers are well mounted on all wiring terminals.

The diameter of the positive pole of the primary power supply connected to the earth complies with the standard requirements.

The working grounding and protection grounding of the BTS and the surge protection grounding of the building share one group of grounding conductors.

The grounding grids of the tower, equipment room, and distribution transformer (if the distance between the transformer and the equipment room is less than 30 m) constitute an integrated grounding grid.

Step 2

See Table 5-9 to check the connection of all the signal cables.

5

6

7

2

3

4

Table 5-9 Checklist for the connection of the signal cables

SN

1

Check Item

The connectors of the E1 cables are tight and secure.

The connectors of the E1 cables are intact.

The E1 cables or RF cables are not damaged or broken.

The connectors of the RF cables are fixed in position to prevent the possible false connection from causing abnormal voltage standing wave ratio (VSWR).

8

The horizontal RF cables are clamped to the cable trough.

The proper cable surpluses are reserved at the connectors.

All cables are neatly bound with ties installed at even intervals, to a proper tightness, and in the same direction.

Extra cable ties are cut off. All cuts are smooth without sharp projections.



5-33


SN

9

10

11

12

13

Check Item

BTS3900(A) GSM

Commissioning Guide

The cable layout facilitates maintenance and future capacity expansion.

All the labels and tags at both ends of the cables are legible.

The unused ports are covered with dust-proof covers and matching plugs.

The indoor 1/2-inch jumpers are distributed according to the layer and sector.

The indoor 1/2-inch jumpers are kept straight for 300 mm at their joints with the cabinet.

----End



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BTS3900(A) GSM

Commissioning Guide 6 Optional Commissioning Tasks

6

Optional Commissioning Tasks


The optional commissioning tasks are the VSWR check, output power of the TRX check, loopback test check, settings of the DIP switches on the board check, transmission between the

BBU and the BSC on the BTS side check, transmission between cascaded TRXs check, and

TRX ring topology check.

6.1 Commissioning the Antenna System

This describes how to commission the antenna system. You must check whether the VSWR is normal, whether the output power of the TRX is normal, and whether the antenna is connected properly. If an RET antenna is configured, you need to commission it.

6.2 Performing the Loopback Test

This describes how to perform the loopback test. The loopback test is optional. Before testing

CS and PS services, you must check the transmission links of the signaling channels and traffic channels in the BTS. Loopback tests can be classified into the carrier loopback test and the channel loopback test.

6.3 Checking the DIP Switch Settings of the Boards

This describes how to check whether the settings of the DIP switches on the board are correct.

You can perform this task by checking whether the attribute values corresponding to the DIP switches meet the actual requirements on the LMT.

6.4 Locally Checking the Transmission Between the BBU and the BSC

This describes how to check the status of the LEDs on the GTMU panel, how to check the connections of the E1 cable and E1 surge protection transfer cable. It also describes how to clear the fault caused by improper connections to ensure that the BBU communicates properly with the BSC.

6.5 Checking the Transmission Between Cascaded TRXs

This describes how to check the transmission between cascaded TRXs. The following description is based on three levels of cascaded TRXs.

6.6 Checking TRXs in Ring Topology

This describes how to check TRXs in ring topology on site. The following description is based on level 3 of TRXs in ring topology.



6-1

6 Optional Commissioning Tasks

BTS3900(A) GSM

Commissioning Guide

6.1 Commissioning the Antenna System

This describes how to commission the antenna system. You must check whether the VSWR is normal, whether the output power of the TRX is normal, and whether the antenna is connected properly. If an RET antenna is configured, you need to commission it.

6.1.1 Measuring the VSWR

This describes how to measure whether the VSWR is less than or equal to 1.5. If the VSWR is less than or equal to 1.5, the transmission of the antenna system is normal. To measure the

VSWR, perform the following steps where the Site Master is taken as an example.

6.1.2 Monitoring the Output Power of TRXs

This describes how to obtain the output power of the TRX, which indicates the running status of the TRXs.

6.1.3 Checking the Antenna Connection

This describes how to check the antenna connections with an MS. You can lock the MS on a cell frequency and perform the dialing test. If the MS dialing test is successful, the antenna is properly connected.

6.1.1 Measuring the VSWR

This describes how to measure whether the VSWR is less than or equal to 1.5. If the VSWR is less than or equal to 1.5, the transmission of the antenna system is normal. To measure the

VSWR, perform the following steps where the Site Master is taken as an example.

Prerequisite

The BTS is powered off.

NOTE

If you have checked the VSWR before powering on the BTS, you do not need to perform this task.

Procedure

Step 1 Measure the VSWR at the antenna port by using the Site Master.

If...

Then...

The VSWR is less than or equal to 1.5

The transmission of the antenna system is operational. Record the VSWR in the

Commissioning Record Data Sheet.

If the VSWR is greater than 1.5

The transmission of the antenna system is faulty. Go

to Step 2 .

6-2

Step 2 Use the Site Master to locate the fault point of the abnormal VSWR on the jumper or feeder.

When a fault point is found, check whether the connections are secure at the fault point, and whether the connectors are intact. If the connector is faulty, replace it.



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BTS3900(A) GSM


NOTE

The fault points are usually at the connection point between the jumper and the feeder or between the jumper and the antenna.

----End

6.1.2 Monitoring the Output Power of TRXs

This describes how to obtain the output power of the TRX, which indicates the running status of the TRXs.

Procedure

Step 1 Connect the power meter to the ANT port on the RFU.

Step 2 In the navigation bar of the Site Maintenance Terminal System window, choose Site . In the browse window, double-click RF Specification Test . The Please select RC to test dialog box is displayed. Select the board to be tested, as shown in

Figure 6-1

.

Figure 6-1 Please select RC to test dialog box

Step 3 Click OK . The RF Specification Test dialog box is displayed, as shown in

Figure 6-2

.

Figure 6-2 RF Performance Test dialog box



6-3


BTS3900(A) GSM

Commissioning Guide

Step 4

Set the parameters listed in Table 6-1 . Then, click

User-defined Message . Then, click Start

Test to initiate the test on the output power of the TRXs.

NOTE

The parameters not involved in

Table 6-1

can use the default values.

Table 6-1 Parameter required in RF performance test

Group Box Type

Testing Items

Antenna Mode

Power Type

Channel Type

AC Setting

Parameter Setting Description

Select Transmitter , and retain the default settings of the dropdown list.

Set the corresponding antenna mode and Card No.

based on the actual configuration.

Set Power Type according to the actual configuration.

Select Cell No.

, RC No.

, and Channel No.

based on the actual configuration.

Select Band based on actual configuration. Set Static power to 0.

Step 5 Check the output power displayed in the power meter. Determine whether the output power of the TRX is within the normal range.

If...

Then...

The output power is within the normal range

Record the power in the 8 Commissioning Record

Data Sheet .

The output power is beyond the normal range

1. Check whether the connection between the power meter and the cable is secure.

2. Check whether the power meter is correctly set.

If any fault exists, clear it.

3. Check whether the RFU is correctly configured and can transmit power.

4. Replace the RFU in which the TRX does not transmit power normally.

6-4

NOTE l l

The output power displayed in the power meter is the power of the BTS with power sharing disabled.

The permissible offset of the power is ±1 dBm.

The TX output power displayed on the power meter is only that of a single carrier, rather than the total power of all the carriers in the RFU module.

Step 6 Repeat steps

Step 2

through Step 5 to check the output power of all the carriers at the site.

----End



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BTS3900(A) GSM


6.1.3 Checking the Antenna Connection

This describes how to check the antenna connections with an MS. You can lock the MS on a cell frequency and perform the dialing test. If the MS dialing test is successful, the antenna is properly connected.

Prerequisite l l l l

The BTS is powered on and works normally.

The transmission between the BSC and the BTS is normal.

The antenna system is connected to the cabinet.

The test MS is registered in the HLR.

Procedure

Step 1 Power on one test MS, and check that the MS automatically searches for the GSM network.

If...

The test MS fails to find the GSM network

Then...

l Check whether the test MS has a SIM card. If the test MS does not have a SIM card, insert the

SIM card in the MS.

l l

Check whether the SIM card supports authentication and encryption. If the SIM card does not support authentication or encryption, replace it.

Check whether the test MS is functional. If the test MS is faulty, replace it.

The test MS finds the GSM network Go to

Step 2

.

Step 2 Lock the test MS on a frequency in a logical cell under the BTS.

Step 3 Perform the dialing test using the test MS. Then, check whether the antenna corresponding to the frequency is connected properly according to the test results.

If...

The dialing test is successful

Then...

You can infer that the feeder corresponding to the

frequency is connected properly. Go to Step 4 .

The dialing test is not successful You can infer that the antenna system on the frequency may be connected improperly. Check the antenna connection and adjust the antenna.



6-5


BTS3900(A) GSM

Commissioning Guide

NOTE

You are advised to do as follows to ensure the accuracy of test results: l Make test calls within the power range of -30 dBm to -70 dBm under the tower.

l Perform the dialing test for more than five times.

Step 4 Repeat steps

Step 2 through Step 3 to check the antenna connections on all the frequencies of

the BTS.

----End

6.2 Performing the Loopback Test

This describes how to perform the loopback test. The loopback test is optional. Before testing

CS and PS services, you must check the transmission links of the signaling channels and traffic channels in the BTS. Loopback tests can be classified into the carrier loopback test and the channel loopback test.

Prerequisite l l l


The current software version and data configuration on the LMT are correct.

No alarm related to disruption of BTS services is reported.

6.2.1 Performing the Carrier Loopback Test

This describes how to perform the carrier loopback test. Before testing CS and PS services, you must check the transmission links of the signaling channels in the BTS.

6.2.2 Performing Channel Loopback Tests

This describes how to perform channel loopback tests. Before testing CS and PS services, you must check that the transmission links of the traffic channels in the BTS are proper.

6.2.1 Performing the Carrier Loopback Test

This describes how to perform the carrier loopback test. Before testing CS and PS services, you must check the transmission links of the signaling channels in the BTS.

Context

The BIU loopback test is performed to test the link transmission of the TRX timeslots on the

BTS DBUS.

Procedure

Step 1 On the BSC6000 Local Maintenance Terminal window, choose BTS Maintenance >

Maintain TRX > Test TRX Loopback .

The Test TRX Loopback




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BTS3900(A) GSM

Commissioning Guide

Figure 6-3 Test TRX Loopback dialog box


Step 2 Set the parameters in the Location and Setting areas. That is, set Type to BIU Loop Test , and set Site , Cell , and TRX as required.

NOTE

The maximum Duration of the BIU loop test is the default value, which is 10s. In most cases, the default value is used.

Step 3 Click Start to perform the test. The result is displayed in the Test Result area, as shown in

Figure 6-3

.

If...

The BER is 0%

Then...

The signaling channel is normal.

The BER is not 0% The signaling channel is abnormal. Record the number of the faulty

TRX, and contact Huawei BTS technical support engineers for troubleshooting.

NOTE

During the test, you can click Stop to stop the test. The Succeeded in stopping the TRX loop test.

message is displayed in the Test Result area.

Step 4 Repeat steps

Step 1

through Step 3 to perform the loopback test on the other TRXs.

----End



6-7


BTS3900(A) GSM

Commissioning Guide

6.2.2 Performing Channel Loopback Tests

This describes how to perform channel loopback tests. Before testing CS and PS services, you must check that the transmission links of the traffic channels in the BTS are proper.

Context

The BIU loopback test is performed to test the timeslot transmission over the TRX traffic channel on the DBUS in the BTS.

Procedure

Step 1 On the BSC6000 Local Maintenance Terminal window, choose BTS Maintenance >

Maintain TRX > Test Channel Loopback .

The Test Channel Loopback dialog box is displayed, as shown in

Figure 6-4

.

Figure 6-4 Test Channel Loopback dialog box

6-8

Step 2 Set the parameters in the Location and Setting areas. That is, set Type to BIU Loop Test , and set Site , Cell , TRX and Channel as required.



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BTS3900(A) GSM


NOTE

The maximum Duration of the BIU loop test is the default value, which is 10s. In most cases, the default value is used.

Step 3 Click Start . The Confirm dialog box is displayed. Click Yes to perform the test. The result is displayed in the Test Result

area, as shown in Figure 6-4 .

If...

The BER is 0 per mille

Then...

The service channel is normal.

The BER is not 0 per mille The service channel is abnormal. Record the number of the faulty TRX, and contact Huawei BTS technical support engineers for troubleshooting.

NOTE

During the test, you can click Stop to stop the test. The Succeeded in stopping the TRX loop test.

message is displayed in the Test Result area.

Step 4 Repeat steps

Step 1

through Step 3 to perform the loopback test on the other channels.

----End

6.3 Checking the DIP Switch Settings of the Boards

This describes how to check whether the settings of the DIP switches on the board are correct.

You can perform this task by checking whether the attribute values corresponding to the DIP switches meet the actual requirements on the LMT.

Prerequisite l l

The BTS is in TDM transmission mode.


Procedure

Step 1 Query the information of the GTMU: In the BSC6000 Local Maintenance Terminal window, select the target site. Right-click GTMU on the Site Device Panel tab page, and choose Query

Board Information . The Query Board Information dialog box is displayed.

Step 2 Click the Running Parameter tab, and then click Query on the Running Parameter tab page.

The query is successful, and the running status of the board is displayed in the dialog box.

Step 3 Check whether Attribute Value of E1/T1 Capability and Impedance Capability consistent with the actual condition, as shown in

Figure 6-5

.

l If the attribute values are consistent with the actual condition, end the task.

l If the attribute values are not consistent with the actual condition, see the BTS3900 Quick

Installation Guide or the BTS3900A Quick Installation Guide to set the corresponding DIP switches on the BTS side again.



6-9


Figure 6-5 Site Device Attributes dialog box

BTS3900(A) GSM

Commissioning Guide

----End

6.4 Locally Checking the Transmission Between the BBU and the BSC

This describes how to check the status of the LEDs on the GTMU panel, how to check the connections of the E1 cable and E1 surge protection transfer cable. It also describes how to clear the fault caused by improper connections to ensure that the BBU communicates properly with the BSC.

Prerequisite l l

The BBU is connected to the BSC through an E1/T1 cable.

The BBU and the BSC are successfully powered on.



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BTS3900(A) GSM


Procedure

Step 1 Check whether the settings of DIP switch meet the field requirements. if not, modify the settings of DIP switch as required.

Step 2 Check the status of the LEDs LIU0 to LIU3 on the panel of the GTMU in the BBU. The LEDs

LIU0 to LIU3 correspond to link 1 to 4 of the E1/T1 cable. Each link has one TX line and one

RX line.

If...

Then...

The LEDs are OFF The E1/T1 links are normal. End this task.

The LEDs are ON or ON for 0.125s and OFF for 0.125s

The E1/T1 links are abnormal. Go to Step 3 .

NOTE

You need check the status of only the LIU LEDs corresponding to the E1/T1 line in use. The LIU LEDs corresponding to the unused E1/T1 cables are ON .

l l l

If the BBU is in non cascaded, there is only one E1/T1 link between the BBU and the BSC and the corresponding LED is LIU0. If the LIU0 LED is OFF , it indicates the communication between the

BBU and the BSC is normal. Otherwise, the communication is abnormal.

If the two BBUs are cascaded, the second E1/T1 link of level 1 BBU is connected to the first E1/T1 link of level 2 BBU. Check the LIU1 LED and LIU0 LED on level 1 BBU and level 2 BBU respectively to verify whether the physical link is operational. If multiple BBUs are cascaded, check the LEDs of the corresponding links.

If the BBU and the BSC form a ring, check the LIUs corresponding to the links in the ring to verify whether the communication is normal. For the connections of multiple BBUs and the LEDs to be checked, see that of the two BBUs in cascading connection.

Step 3 Check the connections and connectors at both ends of the cables. If the connector is damaged, replace it.

If...

The UELP is configured

The UELP is not configured

Then...

l Check whether the E1/T1 cable is connected properly to the OUTSIDE port on the UELP.

l Check whether the E1 surge protection transfer cable is connected properly to the INSIDE port on the

UELP.

l Check whether the E1 surge protection transfer cable is connected properly to the E1/T1 on the GTMU.

Check whether the E1/T1 cable is connected properly to the E1/T1 port on the GTMU.

Step 4 At the DDF on the BTS side, check the soldering conditions for the connectors of the E1/T1 link where the communication is abnormal. Ensure sound jointing, since poor jointing may cause poor E1/T1 connection.

Step 5 Perform a physical loopback test on the E1/T1 cable where the communication is abnormal.

Check whether the transmission of the E1/T1 cable is normal on the BTS side.



6-11


BTS3900(A) GSM

Commissioning Guide

1.

For a pair of E1s/T1s connecting the BTS and BSC through the DDF, the A port is connected to the C port, and the B port is connected to the D port. In the loopback test, disconnect the

A port from the C port, and the B port from the D port, and then connect the A port to the

B port, as shown in Figure 6-6

. In this way, the TX end and RX end of the E1/T1 line is connected and the physical loopback is formed on the BTS side.

Figure 6-6 Physical loopback of E1/T1 at the DDF

2.

Check the status of the LIU LEDs on the GTMU panel again.

If...

The LEDs are OFF

Then...

The E1/T1 connections are normal on the

BTS side. The problem may be that the connection between the BTS and the BSC or the connections on the BSC side are faulty.

End the check, and contact the BSC technical support engineer to clear the fault.

The LEDs are ON or ON for 0.125s and

OFF for 0.125s

The cable connections on the BTS side are faulty. Clear the fault on the BTS side.

3.

Set the E1s/T1s at the DDF on the BTS side from physical loopback to normal connection.

Ensure that the connections are sound.

Step 6 Check the E1/T1 connections at the DDF. Ensure that the TX and RX ends of the E1 cables are connected properly.

NOTE

Do as follows to distinguish the E1 RX end from the E1 TX end:

Connect a pin of an LED to the wire of the E1/T1 cable, and the other pin to the shielding layer of the E1/

T1 cable. If the LED is ON, this end is the TX end. If the LED is OFF, this end is the RX end.

----End

6.5 Checking the Transmission Between Cascaded TRXs

This describes how to check the transmission between cascaded TRXs. The following description is based on three levels of cascaded TRXs.

Prerequisite

The physical connection between cascaded TRXs on the BTS side is complete.



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BTS3900(A) GSM


Procedure

Step 1 In the navigation tree in the left pane of the BSC6000 Local Maintenance Terminal window, select the BTS, and check whether the status of the three cascaded TRXs on the Site Device

Panel tab page is green, as shown in

Figure 6-7

.

l If the TRXs are displayed in green, you can infer that the TRXs are functional. End this task.

l If the TRXs are displayed in other colors, you can infer that the transmission between

cascaded TRXs is abnormal. Go to Step 2 .


Step 2 If the status of the level 2 TRX and level 3 TRX is red, you can infer that the link between the level 1 TRX and level 2 TRX is faulty. The system reports SFP Port Inconsistency Alarm .

Check whether the connection between the TRXs on the BTS side is normal, or clear the alarm based on the BSS Alarm Reference .

Step 3 If the status of the level 3 TRX is red, you can infer that the link between the level 2 TRX and level 3 TRX is faulty. The system reports SFP Port Inconsistency Alarm . Check the



6-13


BTS3900(A) GSM

Commissioning Guide transmission between the TRXs on the BTS side, or clear the alarm based on the BSS Alarm

Reference .

----End

6.6 Checking TRXs in Ring Topology

This describes how to check TRXs in ring topology on site. The following description is based on level 3 of TRXs in ring topology.

Prerequisite l l

The physical connection between TRXs in ring topology on the BTS side is complete.

The configuration of the TRXs in ring topology on the BSC side is complete.

Context l

Figure 6-8 shows the connection between TRXs in ring topology. A, B, C, and D indicate

the positions where the link may be broken during the ring topology transmission.

Figure 6-8 Connection between TRXs in ring topology

D R F U

R x 1 in

R x 1 o u t

A N T 1

R x 2 in

R x 2 o u t

A B

D R F U

R x 1 in

R x 1 o u t

A N T 1

R x 2 in

R x 2 o u t

R U N

A C T

C P R L 0

R S T

A L M

V S W R

C P R L 1

C P R I_ 0

C P R I_ 1

A N T 2

P W R

R U N

A C T

C P R L 0

R S T

A L M

V S W R

C P R L 1

C P R I_ 0

C P R I_ 1

A N T 2

P W R

C

RFU0 RFU1

BBU

D

D R F U

R x 1 in

R x 1 o u t A N T 1

R x 2 in

R x 2 o u t

R U N

A C T

C P R L 0

R S T

A L M

V S W R

C P R L 1

C P R I_ 0

C P R I_ 1

A N T 2

P W R

RFU2 l The GTMU reports SFP Port Inconsistency Alarm when the ring topology is used in physical connection but not in data configuration, or when the ring topology is used in data configuration but not in physical connection.

CAUTION

Do not set breakpoints on the LMT when the TRXs are cascaded through the SFP high-speed signal cable. Otherwise, the board will be seriously damaged. You can directly connect and disconnect the signal cable between the cascaded TRXs to check the connection between them.

Procedure

Step 1 Check whether the TRX ring topology is configured on the LMT.

If...

The ring topology is configured

Then...

Go to

Step 2

.



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BTS3900(A) GSM


If...

Then...

The ring topology is not configured Configure the ring topology. For details, see the BSC

Initial Configuration Guide .

Step 2 Change the TRX ring topology test to TRX cascaded test. The purpose of setting breakpoints on the LMT is to simulate the scenario that faults occur on the transmission link. In this way, you can check whether the TRXs are automatically switched to chain topology and whether the alarm is reported.

1.

in the BSC6000 Local Maintenance Terminal window, right-click the target site, and choose Configure Site Board Attributes . The Site Device Attributes dialog box is displayed.

2.

Click Configure Site Board Attributes . The Site Device Attributes dialog box is

displayed, as shown in Figure 6-9 .

Figure 6-9 Site Device Attributes dialog box

Issue 02 (2009-04-20)

3.

Right-click the RXU chain, and choose Set Break Point . The Set RXU Chain Break

Point dialog box is displayed.



6-15


BTS3900(A) GSM

Commissioning Guide

4.

Set the breakpoint to disconnect the level 3 TRX, as shown in

Figure 6-10

.

Figure 6-10 Set RXU Chain Break Point dialog box

5.

Click OK to return to the Site Device Attributes dialog box. The breakpoints marked with red cross are displayed, as shown in

Figure 6-11 .

Figure 6-11 Setting breakpoint successfully

6.

Click OK , and then click Finish to return to the BSC6000 Local Maintenance

Terminal window. The level 3 TRX is disconnected, and the Site Device Panel tab page displays the faulty state, as shown in

Figure 6-12

.



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BTS3900(A) GSM


Figure 6-12 Status of the disconnected TRX ring topology

7.

Right-click the site, and choose Configure Site Board Attributes from the shortcut menu.

The Configure Site Boards Attributes dialog box is displayed.

8.

Click Configure Site Board Attributes , the Site Device Attributes dialog box is displayed.

9.

Right-click the RXU chain, and choose Combine or Separate RXU Chain . The Split

RXU Chain


Figure 6-13 Split RXU Chain dialog box

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10. Set Please select a point to split this RXU Chain to 2. Click OK , and then return to the

Site Device Attributes dialog box. The level 3 TRX is configured under the RXU link.

The start port is SFP1, as shown in Figure 6-14

.



6-17


Figure 6-14 Splitting RXU chain successfully

BTS3900(A) GSM

Commissioning Guide

11. Click OK , and then click Finish to return to the BSC6000 Local Maintenance

Terminal

window. Figure 6-15

shows the data configuration on the Site Device Panel tab page. The GTMU reports the SFP Port Inconsistency Alarm .

Figure 6-15 TRX ring topology in splitting state



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BTS3900(A) GSM


NOTE

After Step 2.11

is performed, the status of the RFU is Faulty, and the

TRX Communication

Alarm is reported. Wait one to two minutes, and the TRX Communication Alarm is cleared, and the state of the RFU is Normal.

Step 3 Change the TRX cascaded test to TRX ring topology test. The purpose of removing breakpoints on the LMT is to simulate the scenario that the faults on the transmission link. In this way, you can check whether the TRXs are automatically switched to ring topology and whether the alarm is automatically cleared.

1.

In the BSC6000 Local Maintenance Terminal window, right-click the target site and choose Configure Site Board Attributes . The Site Device Attributes dialog box is displayed.

2.

Click Configure Site Board Attributes . The Site Device Attributes dialog box is displayed.

3.

Right-click the RXU chain, and choose Combine or Separate RXU Chain . The Combine

RXU Chain dialog box is displayed.

4.

Set Chain No.

and Please select the RXU chains to be combined

, as shown in Figure

6-16

. The following description takes combining RXU chain 1 to RXU chain 0 as an example.

Figure 6-16 Combine RXU Chain dialog box

5.

Click OK , and return to the Site Device Attributes dialog box. The RXU Chain becomes

RXU Ring, as shown in Figure 6-17 .



6-19


Figure 6-17 Combining RXU chain successfully

BTS3900(A) GSM

Commissioning Guide

6.

Click OK , and then click Finish to return to the BSC6000 Local Maintenance

Terminal

window. Figure 6-18

shows the status of boards on the Site Device Panel tab page. SFP Port Inconsistency Alarm is cleared. The level 3 TRX, however, is in the disconnected state due to the breakpoint. Therefore, TRX Communication Alarm is reported.



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BTS3900(A) GSM

Commissioning Guide

Figure 6-18 RXU ring in combined state


Issue 02 (2009-04-20)

7.

In the BSC6000 Local Maintenance Terminal window, right-click the target site and choose Configure Site Board Attributes , and the Site Device Attributes dialog box is displayed.

8.

Click Configure Site Board Attributes . The Site Device Attributes dialog box is displayed.

9.

Right-click the RXU chain, and choose Set Break Point . The Set RXU Chain Break

Point dialog box is displayed.

10. Delete breakpoints: Set Break Point 1 Position and Break Point 2 Position to NULL.

11. Click OK , and return to the Site Device Attributes dialog box. The two breakpoints marked with red cross are cleared.

12. Click OK , and then click Finish to return to the BSC6000 Local Maintenance

Terminal window. All the alarms are cleared, and the status of each board is normal, as shown in

Figure 6-19

.



6-21


Figure 6-19 RXU Ring in normal state

BTS3900(A) GSM

Commissioning Guide

6-22

----End

NOTE

After Step 3.12

is performed, the status of the RFU is Faulty, and the

TRX Communication

Alarm is reported. Wait one to two minutes, and the TRX Communication Alarm will be cleared, and the status of the RFU is Normal.



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BTS3900(A) GSM

Commissioning Guide 7 FAQs for BTS Commissioning

7

FAQs for BTS Commissioning


This describes the fault symptoms and cause analysis in the BTS commissioning.

7.1 Failed Communication Between the SMT and the BTS

This describes the symptom of the communication failure between the SMT and the BTS and analyzes the cause of the failed communication. It also provides the fault handling suggestions.

7.2 Faulty E1 Link

This describes the fault symptom and analyzes the cause of the faulty E1 link. It also provides the fault handling suggestions.

7.3 Failure of an MS to Search the Network

This describes the fault symptom and analyzes the cause of the failure of an MS to search the network.

7.4 Service Dialing Failure

This describes the fault symptom and analyzes the cause of the service dialing failure. It also provides the fault handling suggestions.

7.5 Low GPRS Data Transmission Rate

This describes the fault symptom and analyzes the cause of low GPRS data transmission rate.



7-1

7 FAQs for BTS Commissioning

BTS3900(A) GSM

Commissioning Guide

7.1 Failed Communication Between the SMT and the BTS

This describes the symptom of the communication failure between the SMT and the BTS and analyzes the cause of the failed communication. It also provides the fault handling suggestions.

Fault Symptom

Log in to the BTS on the SMT fails. The result of running the ping commands shows that the connection between the SMT PC and the BTS cannot be established.

Cause Analysis and Handling Suggestions

Table 7-1

lists the possible causes and related suggestions to handle the fault.

Table 7-1 Possible causes and handling suggestions for failed communication between the SMT and the BTS

Fault Cause

The Ethernet cable is faulty.

Handling Suggestion

Check the connection of the Ethernet cable.

Check whether the RJ45 connectors on both ends are functional. If the RJ45 connector is faulty, replace it.

The IP address of the SMT PC is incorrect.

Check whether the IP address of the SMT PC is on the same network segment as that of the board.

7.2 Faulty E1 Link

This describes the fault symptom and analyzes the cause of the faulty E1 link. It also provides the fault handling suggestions.

Fault Symptom

Alarms related to the E1/T1 link are reported, or the upper link is faulty.

Analysis l l l

When the E1 links are faulty, the cause may be one of the following:

The physical connection of cable is faulty.

The crossed pair connection exists.

The BER in transmission is high.

Handling Suggestion

1.

Check the connections and connectors at both ends of the E1 link. Ensure that the connections are reliable and the connectors are functional.



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BTS3900(A) GSM


2.

Check for the crossed pair connection on the LMT.

3.

Perform a physical loopback test to check whether the transmission of the E1 cable is normal on the BTS side.

4.

Check the transmission channels to ensure that all the transmission channels are available.

Example One: Detection of Crossed Pair Connection

NOTE

The detection method in this example is applicable to check for the improper E1 connection between the

BTS and the BSC or the improper E1 connection on the BSC side. This detection method also can be used to check the improper T1 connection.

The crossed pair connection refers to the incorrect RX and TX connections between two pairs of E1 cables, as shown in

Figure 7-1

.

Figure 7-1 Crossed pair connection

E1 A

RX

TX

TX

RX

E1 A

Issue 02 (2009-04-20)

E1 B

TX

RX

RX

TX

E1 B

Perform the loopback method on the BSC side to check for crossed pair connection. Perform different steps according to different E1 connection modes.

l

NOTE

Loopback test: Set the port on the BTS side to the directly physical loopback mode. Send the test data, which carries the E1 port number, to the TX end of the E1 from the BSC side. After the loopback, check whether the received port information is the same as the transmitted one. If yes, you can infer that the E1 cable is correctly connected. If not, you can infer that the crossed pair connection occurs.

E1 link between the BTS and the BSC (1): BTS → DDF on the BTS side → DDF on the BSC side → BSC, as shown in

Figure 7-2

.

Figure 7-2 E1 link between the BTS and the BSC (1)

BTS

E1/T1

E1/T1

A0 C0

B0 D0

DDF0

E1/T1

E1/T1



A1 C1 E1/T1

E1/T1

B1 D1

DDF1 BSC

7-3


BTS3900(A) GSM

Commissioning Guide l

1.

Check for the crossed pair connection on the E1 cable between the DDF on the BSC side and the BSC.

(1) Perform a physical loopback on each E1 cable at the DDF subrack of the BSC, as shown in

Figure 7-2

. Connect port C1 and port D1

(2) Run CHK E1T1CRS to query the results. If the results of all the ports are NOT

CROSS , you can infer that the E1 cable is correctly connected on the BSC side.

If the results are CROSS EXIST , correctly connect the E1 cable to this port.

(3) Restore the E1 connections between the BSC and the DDR. That is, connect port

C1 to port A1 and connect port D1 to port B1.

2.

Check for the crossed pair connection on the E1 cable at the DDF subrack of the BSC.

That is, connect port A1 and port B1. The detection method is similar to that in

1

.

3.

Check for the crossed pair connection on the E1 cable between the DDF subrack of the BTS and the DDF subrack of the BSC. That is, connect port C0 and port D0. The

detection method is similar to that in 1

.

4.

Check for the crossed pair connection on the E1 cable at the DDF subrack of the BTS.

That is, connect port A0 and port B0. The detection method is similar to that in

1

.

E1 link between the BTS and the BSC (2): BTS → DDF on the BSC side → BSC, as shown in

Figure 7-3

.

Figure 7-3 E1 link between the BTS and the BSC (2)

BTS

E1/T1

E1/T1

A

B

DDF

D

C E1/T1

E1/T1

BSC

1.

Check for the crossed pair connection on the E1 cable between the DDF subrack of the BSC and the BSC.

(1) Perform a physical loopback on each E1 cable at the DDF subrack of the BSC, as shown in

Figure 7-2

. Connect port C and port D.

(2) Run CHK E1T1CRS to query the results. If the results of all the ports are NOT

CROSS , you can infer that the E1 cable is correctly connected on the BSC side.

If the results are CROSS EXIST , correctly connect the E1 cable to this port.

(3) Restore the E1 connections between the BSC and the DDR subrack. That is, connect port C to port A and connect port D to port B.

2.

Check for the crossed pair connection on the E1 cable at the DDF subrack of the BSC.

That is, connect port A and port B. For details, see 1

.

Example Two: Check for UELP Faults Through Physical Loopback Test

NOTE

The physcial loopback test in this example is applicable to check for the improper E1 connection on the

BTS side.



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BTS3900(A) GSM


1.

Ensure that the E1/T1 cable is securely connected to the OUTSIDE port on the UELP, and that the connectors are in sound condition. If the connector is damaged, replace it.

2.

Ensure that the E1 transfer cable is securely connected to the INSIDE port on the UELP and the E1/T1 port on the GTMU, and that the connectors are in sound condition. If the connector is damaged, replace it.

3.

Perform the physical loopback test and troubleshoot the fault in the UELP.

(1) Perform a physical loopback on the BTS side. In general, for a pair of E1s/T1s connecting the BTS and BSC through the DDF, port A0 is connected to port C0, and port B0 is connected to port D0. In the loopback test, disconnect port A0 from port

C0, and port B0 from port D0, and then connect port A0 to port B0, as shown in Figure

7-4

. In this way, the physical loopback is formed on the BTS side.

Figure 7-4 Physical loopback of E1/T1 on the BTS side

BTS

E1/T1

E1/T1

A0 C0

B0 D0

DDF0

E1/T1

E1/T1

A1 C1 E1/T1

E1/T1

B1 D1

DDF1 BSC

(2) You need check the state of the LIU LEDs corresponding to the E1/T1 in use, as shown in

Table 7-2

.

Table 7-2 Meaning of the state of the LIU LEDs (UELP used)

If...

Then...

The LEDs are OFF The cable connections on the BTS side are operational. The fault of the UELP is cleared. The testing task on the BTS side is complete.


OFF for 0.125s

The cable connections on the BTS side are faulty. Clear the fault of the UELP.

(3) Disconnect the E1 transfer cable and the E1/T1 cable. Then, directly connect the E1/

T1 cable to the E1/T1 port on the GTMU.

(4) When the UELP is not used, determine whether the E1/T1 link is normal based on the state of the LIU LEDs on the GTMU panel, as listed in

Table 7-3 .



7-5


BTS3900(A) GSM

Commissioning Guide

Table 7-3 Meaning of the state of the LIU LEDs (UELP not used)

If...

The LEDs are OFF

Then...

The UELP is faulty.

a. Check whether the connection between the UELP and the backplane of the BBU is reliable.

b. Replace the UELP.

The UELP is functional, but the E1 link on the BTS side is faulty.


OFF for 0.125s

(5) Reconnect the E1/T1 cable to the OUTSIDE port on the UELP and ensure that the connection is proper.

(6) Reconnect the E1/T1 cable to the INSIDE port on the UELP and the E1/T1 port on the GTMU, and ensure that the connection is proper.

CAUTION

After the physical loopback test, set the E1/T1 at the DDF on the BTS side from physical loopback to normal connection. Ensure that the connections are sound.

7.3 Failure of an MS to Search the Network

This describes the fault symptom and analyzes the cause of the failure of an MS to search the network.

Fault Symptom

An MS fails to find the network.

Cause Analysis l l l l

The possible causes are as follows: l

Cell parameters such as CGI, BCCH, TA, and BSIC are improperly configured.

The MS does not support the frequency band of this base station.

The downlink signals are weak. Therefore, the MS is unable to locate the cell.

The downlink interference is strong. The MS is unable to locate the cell or receive the correct downlink system information.

The cell radius is small.

NOTE

When the MS fails to find the network, pay attention to the output power of the local cell and the radio network coverage.



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BTS3900(A) GSM


7.4 Service Dialing Failure

This describes the fault symptom and analyzes the cause of the service dialing failure. It also provides the fault handling suggestions.

Fault Symptom

Service dialing failure may occur in either of the following cases: l l

Location update failure

Service dialing failure

Cause Analysis and Handling Suggestion

Table 7-4

lists the possible causes and related suggestions.

Table 7-4 Possible causes and handling suggestions for service dialing failure

Cause of the Fault Handling Suggestion

The MS is faulty.

Replace the MS with a new one.

The CS domain or the PS domain on the CN side is not ready.

Keep the CS domain and the PS domain ready.

7.5 Low GPRS Data Transmission Rate

This describes the fault symptom and analyzes the cause of low GPRS data transmission rate.

Fault Symptom

During the service test, the following problems may occur: low GPRS data rate in the PS domain of the newly added BTS, or a high BER on the Abis interface.

Cause Analysis

The possible causes are as follows: l

The E1 cable is not properly grounded. You can enable the grounding status of the E1 cable by setting the DIP switch SW2 on the GTMU .

Table 7-5

describes the DIP switch SW2 .

Table 7-5 Description of the DIP switch SW2 on the GTMU

Setting of DIP Bit

1

ON

2

ON

3

ON

4

ON

Description

The E1 cable is grounded.

OFF OFF OFF OFF The E1 cable is not grounded.



7-7


BTS3900(A) GSM

Commissioning Guide l l l

If...

Only one end of the E1 cable is grounded,

Then...

The E1 cable is grounded properly.

Both ends of the E1 cable are grounded, The E1 cable is not grounded properly.

The data configuration negotiated between the BSC and the BTS is not consistent.

The cell signals are weak.

The MS capability is limited.



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BTS3900(A) GSM

Commissioning Guide 8 Commissioning Record Data Sheet

8

Commissioning Record Data Sheet

Issue 02 (2009-04-20)

This describes the data sheet that is used to record the process and result of the BTS commissioning.

Table 8-1 Data sheet for BTS commissioning

Site Name

BTS Model

Commissioning

Time

Commissioning

Engineer

Scenario □ Transmission available scenario □ Transmission unavailable scenario

□ Successful □ Failed Commissioning

Result

Commissioning Item

Commissioning

Preparation Phase

Commis sioning

Phase

Transmis sion

Unavaila ble Phase

The resources required for commissioning are available.

The commissioning requirements are met.

You have logged in to the BTS through the SMT.

The BTS board and logical objects are available.

The current software version is correct.

Conclusion Handling

Exceptional Case



8-1

8 Commissioning Record Data Sheet

The transmission between the

BBU and the RXU is normal.

No other alarms are reported except the alarms related to the transmission.

The hardware connections are correct.

Site management rights are released.

The transmission between the BBU and the

BSC is available.

Transmis sion

Availabl e Phase

(on the

LMT)

The transmission between the

BBU and the RXU and the transmission between the BBU and the BSC is normal.

The transmission between cascaded BTSs is normal.

The transmission between

BTSs in ring topology is normal.

The board configuration is correct and the boards are in normal operation.

The current software version is correct.

The hardware installation and the data configuration are consistent with each other.

Optional

Commiss ioning

Task

No alarms related to the BTS are reported.

The CS service test is successful.

The PS service test is successful.

The environment monitoring alarm is reported normally.

The VSWR is correct. Record the value of the VSWR.

The output power of the TRX is normal. Record the value of the output power per carrier.



BTS3900(A) GSM

Commissioning Guide

Issue 02 (2009-04-20)

BTS3900(A) GSM

Commissioning Guide 8 Commissioning Record Data Sheet

The antenna system is properly connected.

The result of the carrier loopback test is normal.

The result of the channel loopback test is normal.

The DIP switch settings are correct.

Commis sioning

Result

Unsolved Problems

After

Commissioning

Unsolved Problems Impact



8-3

BTS3900(A) GSM

Commissioning Guide 9 Communication Ports Used by the GBTS

9

Communication Ports Used by the GBTS

Table 9-1

lists the communication port used by the GBTS

Table 9-1 The Communication Port Used by GBTS

Prot ocol

Side

A

Side

A

Ports

(Liste ning)

Side B Side

B

Ports

(Lau nch)

Service

TCP GBT

S

700 SMT 1024-

65535

It will be used by SMT for local maintenance before GBTS connects in the network

-

Authe nticati on



9-1

Huawei Technologies QISGRFU-1900 GSMRadio Frequency Unit User Manual

Commissioning Guide

Huawei Technologies Co., Ltd.

Contents

Figures

Tables

About This Document

Changes in BTS3900(A) GSM

Commissioning Guide

General Requirements for the

Commissioning

About This Chapter

2.1 Commissioning Resources

2.2 Commissioning Prerequisites

Commissioning Procedure

Commissioning the BTS (Transmission

Available)

About This Chapter

4.1 Starting the LMT

4.2 Checking the Transmission and Networking

4.2.1 Checking the Transmission Between the RRU and the BBU or

Between the BBU and the BSC on the LMT

4.2.2 Checking the Transmission Between Cascaded BTSs

4.2.3 Checking the Transmission Between BTSs in Ring Topology

4.3 Checking Software Version and Data Configuration

4.3.1 Checking the Board Configuration and Status on the LMT

4.3.2 Checking the Current Software Version on the LMT

4.3.3 Checking the Consistency Between Hardware Installation and

Data Configuration

4.4 Checking the Alarm Information of the BTS (on the

LMT)

4.5 Commissioning the BTS Services

4.5.1 Testing the CS Services

4.5.2 Commissioning PS Services

4.6 Checking the BTS Environment Alarms

4.6.1 BTS Environment Alarm Types

4.6.2 Checking the Environment Monitoring Alarms on the LMT

Commissioning the BTS (Transmission

Unavailable)

About This Chapter

5.1 Starting the Site Maintenance Terminal

5.1.1 Setting the IP Address of the Site Maintenance Terminal PC

5.1.2 Locally Connecting the SMT PC to the BTS

5.1.3 Logging in to the BTS at the Local End

5.2 Configuring the Basic Data of the BTS

5.2.1 Obtaining the Site Management Rights

5.2.2 Configuring the Boards of the BTS on the SMT

5.2.3 Configuring Logical Objects of the BTS on the SMT

5.3 Checking the Active Software Version on the SMT

5.4 Checking the Transmission Between the BBU and RFU on the BTS Side

5.5 Checking the Running Status of the BTS

5.5.1 Checking the State of the BTS LEDs

5.5.2 Checking the Alarm Information of the BTS on the SMT

5.6 Checking the Hardware Connection of the BTS

Optional Commissioning Tasks

About This Chapter

6.1 Commissioning the Antenna System

6.1.1 Measuring the VSWR

6.1.2 Monitoring the Output Power of TRXs

6.1.3 Checking the Antenna Connection

6.2 Performing the Loopback Test

6.2.1 Performing the Carrier Loopback Test

6.2.2 Performing Channel Loopback Tests

6.3 Checking the DIP Switch Settings of the Boards

6.4 Locally Checking the Transmission Between the BBU and the BSC

6.5 Checking the Transmission Between Cascaded TRXs

6.6 Checking TRXs in Ring Topology

FAQs for BTS Commissioning

About This Chapter

7.1 Failed Communication Between the SMT and the BTS

7.2 Faulty E1 Link

7.3 Failure of an MS to Search the Network

7.4 Service Dialing Failure

7.5 Low GPRS Data Transmission Rate

Commissioning Record Data Sheet

Communication Ports Used by the GBTS

Related manuals

Huawei Technologies

QISUAP2105

Huawei Technologies