00350942-product description(for 18trx)-(v300r008_02).pdf

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BTS3012

V300R008

Product Description(for 18TRX)

Issue 02

Date 2008-04-30

Part Number 00350942

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Huawei Technologies Co., Ltd. provides customers with comprehensive technical support and service. For anyassistance, please contact our local office or company headquarters.

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

Bantian, LonggangShenzhen 518129People's Republic of China

Website: http://www.huawei.com

Email: [email protected]

Copyright Huawei Technologies Co., Ltd. 2008. All rights reserved.

No part of this document may be reproduced or transmitted in any form or by any means without prior writtenconsent of Huawei Technologies Co., Ltd. Trademarks and Permissions

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

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

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Contents

About Thi s Document.....................................................................................................................1

1 Introduction to B TS3012 (for 18 TRXs)..................................................................................1-11.1 Components o f the BTS3012 System.............................................................................................................1-2

1.2 Overview of the BTS3012...............................................................................................................................1-21.3 Physical S tructure of the BTS3012 (for 18 TRXs).........................................................................................1-3

1.4 Software Structure of the BTS3012/BTS3012AE..........................................................................................1-5

1.5 Lo gical Structure of the BTS3012..................................................................................................................1-7

2 BTS3012 Com mon Subsystem.................................................................................................2-12.1 Compone nts of the BTS3012 Common Subsystem (for 18 TRXs)................................................................2-2

2.2 Fu nctions of the BTS3012/BTS3012AE Common Subsystem.......................................................................2-3

3 Signal Protect ion Subsystem of the BTS3012.......................................................................3-13.1 Compone nts of the BTS3012 Signal Protection Subsystem...........................................................................3-2

3.2 Fu nctions of the BTS3012 Signal Protection Subsystem................................................................................3-3

4 BTS3012 Dou ble-Transceiver Subsystem..............................................................................4-14.1 Compone nts of the BTS3012 Double-Transceiver Subsystem (for 18 TRXs)...............................................4-2

4.2 Fu nctions of the BTS3012 Double-Transceiver Subsystem (for 18 TRXs)...................................................4-3

5 BTS3012 RF F ront-End Subsystem.........................................................................................5-15.1 Compone nts of the BTS3012/BTS3012AE RF Front-End Subsystem...........................................................5-2

5.2 Fu nctions of the BTS3012/BTS3012AE RF Front-End Subsystem...............................................................5-3

6 Antenna Subs ystem of the BTS...............................................................................................6-16.1 Functions of the Antenna Subsystem..............................................................................................................6-26.2 Typical A ntenna Subsystem............................................................................................................................6-2

6.3 Typical R ET Antenna Subsystem...................................................................................................................6-4

6.3.1 Cabi net + BT + RET Antenna + RCU + SBT........................................................................................6-5

6.3 .2 Cabinet + BT + Cascaded RET Antenna + RCU + SBT.......................................................................6-6

7 BTS3012 Power Subsystem......................................................................................................7-17.1 Components of the BTS3012 Power Subsystem.............................................................................................7-2

7.2 Power distribution principle of the BTS3012.................................................................................................7-2

8 BTS3012 Environment Monitoring Subsystem....................................................................8-18.1 Components of the BTS3012 Environment Monitoring Subsystem...............................................................8-2

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8.2 Functions of the BTS3012 Environment Monitoring Subsystem...................................................................8-2

9 Cabinet Groups of the BTS3012 (for 18 TRXs).....................................................................9-1

10 OM Subsystem of the BTS...................................................................................................10-110.1 OM Modes of the BTS................................................................................................................................10-2

10.2 OM Structure of the BTS............................................................................................................................10-5

10.3 OM Functions of the BTS...........................................................................................................................10-8

11 Clock Synchronization Modes of the BTS3012................................................................11-111.1 Synchronization of the BTS3012 with Abis Clock (for 18 TRXs).............................................................11-2

11.2 Synchron ization of the BTS3012 with External Reference Clock (for 18 TRXs)......................................11-3

11.3 Internal Free -Run Clock of the BTS3012 (for 18 TRXs)...........................................................................11-4

12 Signal Flow of t he BTS3012..................................................................................................12-1

12.1 DL Traffic S ignal Flow of the BTS3012....................................................................................................12-212.2 UL Traff ic Signal Flow of the BTS3012....................................................................................................12-3

12.3 Signaling Flow of the BTS3012/BTS3012AE............................................................................................12-5

12.4 Signal Fl ow of BTS3012 Cabinet Groups...................................................................................................12-5

13 Configuratio n of the BTS3012.............................................................................................13-113.1 Configuration Principles of the BTS3012...................................................................................................13-2

13.2 Typical Configuration of One BTS3012 Cabinet.......................................................................................13-2

13.3 T ypical Configuration of BTS3012 Cabinet Groups..................................................................................13-6

14 Topologies of the BTS...........................................................................................................14-114.1 Star Topology of the BTS...........................................................................................................................14-2

14.2 Chain Topology of the BTS........................................................................................................................14-2

14.3 Tree Topology of the BTS..........................................................................................................................14-3

14.4 R ing Topology of the BTS..........................................................................................................................14-4

15 Technical Specifications of the BTS3012 (for 18 TRXs)..................................................15-115.1 Capacity Specifications of the BTS3012 (for 18 TRXs).............................................................................15-3

15.2 RF Specifications of the BTS3012/BTS3012AE........................................................................................15-3

15.3 E ngineering Specifications of the BTS3012 (for 18 TRXs).......................................................................15-4

15.4 Lightnin g Protection Specifications of the BTS3012/BTS3012AE............................................................15-6

15.5 Physical Ports of the BTS3012....................................................................................................................15-6

15.6 Environ ment Requirements of the BTS3012..............................................................................................15-8

15.6.1 En vironment Requirements for Operating the BTS3012 (for 18 TRXs)...........................................15-8

15.6.2 Environment Requirements for Transporting the BTS3012............................................................15-10

15.6.3 En vironment Requirements for Storing the BTS3012.....................................................................15-12

15.7 Complia nce Standards of the BTS3012....................................................................................................15-15

ContentsBTS3012


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Figures

Figure 1-1 BTS3012 system.................................................................................................................................1-2

Figure 1-2 Fu lly configured BTS3012 cabinet.....................................................................................................1-4

Figure 1-3 So ftware structure of the BTS3012/BTS3012AE..............................................................................1-6

Figure 1-4 Lo gical structure of the BTS3012......................................................................................................1-7

Figure 2-1 Bo ards in the BTS3012 common subrack..........................................................................................2-2

Figure 2-2 Ex ternal connections of the BTS3012 common subrack....................................................................2-3

Figure 3-1 Bo ards in the BTS3012 set-on-top subrack........................................................................................3-2

Figure 3-2 Ex ternal connections of the BTS3012 set-on-top subrack.................................................................3-3

Figure 4-1 Fu lly configured DTRU subracks.......................................................................................................4-2

Figure 4-2 Ex ternal connections of the BTS3012 DTRU subracks.....................................................................4-3

Figure 5-1 Fu lly configured DAFU subrack........................................................................................................5-2

Figure 5-2 Ex ternal connections of the DAFU subrack in the BTS3012/BTS3012AE.......................................5-3

Figure 6-1 Ty pical structure of the antenna subsystem (installed on the rooftop with a dual polarization antennaand without a TMA)..............................................................................................................................................6-3

Figure 6-2 Ty pical structure of the antenna subsystem (installed on the tower with a dual polarization antenna anda TMA)......... .........................................................................................................................................................6-4

Figure 6-3 Co nfiguration of cabinet + BT + RET antenna + RCU + SBT..........................................................6-6

Figure 6-4 Co nfiguration of cabinet + BT + cascaded RET antenna + RCU + SBT...........................................6-7

Figure 7-1 BTS3012 power subsystem................................................................................................................7-2

Figure 7-2 BTS3012 power distribution (-48 V DC)...........................................................................................7-2

Figure 7-3 BTS3012 power distribution (+24 V DC) .........................................................................................7-3

Figure 7-4 BTS3012 power distribution (220 V AC or 110 V AC).....................................................................7-4

Figure 8-1 Co mponents of the BTS3012 Environment Monitoring Subsystem..................................................8-2

Figure 10-1 Network structure of the OM system.............................................................................................10-2Figure 10-2 OM hardware structure of the BTS3012/BTS3012AE...................................................................10-6

Figure 10-3 OM hardware structure of the BTS3006C/BTS3002E...................................................................10-7

Figure 10-4 OM software structure of the BTS.................................................................................................10-8

Figure 11-1 Processing and distributing the Abis clock signals........................................................................11-2

Figure 11-2 Processing and distributing the external reference clock signals...................................................11-3

Figure 11-3 Processing and distributing the internal clock signals....................................................................11-4

Figure 12-1 DL traffic signal flow.....................................................................................................................12-2

Figure 12-2 UL traffic signal flow.....................................................................................................................12-4

Figure 12-3 Signaling Flow................................................................................................................................12-5

Figure 12-4 Bus connection between cabinet groups.........................................................................................12-6

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Figure 12-5 CBUS1 signal flow (1)...................................................................................................................12-6

Figure 12-6 CBUS1 signal flow (2)...................................................................................................................12-7

Figure 13-1 Configuration of S2/2/2..................................................................................................................13-4

Figure 13-2 Configuration of S6/6/6..................................................................................................................13-5

Figure 14-1 Star topology of the BTS................................................................................................................14-2

Figure 14-2 Chain topology of the BTS.............................................................................................................14-2

Figure 14-3 Tree topology of the BTS...............................................................................................................14-3

Figure 14-4 Ring topology of the BTS...............................................................................................................14-4

FiguresBTS3012


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Tables

Table 2-1 Mapping between boards and slot numbers in the BTS3012 common subrack..................................2-2

Table 3-1 Mapping between boards and slot numbers in the set-on-top subrack................................................3-2

Table 6-1 Features of the GSM antenna subsystem.............................................................................................6-2

Table 7-1 Ma pping between the power switches and the equipment...................................................................7-3

Table 10-1 Fu nctions of the BTS OM system....................................................................................................10-3

Table 15-1 O perating frequency bands of the BTS3012/BTS3012AE..............................................................15-3

Table 15-2 Output power....................................................................................................................................15-4

Table 15-3 R eceiver sensitivity..........................................................................................................................15-4

Table 15-4 Dimensions (appearance).................................................................................................................15-4

Table 15-5 W eight of the cabinet.......................................................................................................................15-5

Table 15-6 Sp ecifications of the power input.....................................................................................................15-5

Table 15-7 Po wer Consumption.........................................................................................................................15-5

Table 15-8 Lightning protection specifications of the BTS3012/BTS3012AE.................................................15-6

Table 15-9 Tr ansmission ports of the BTS3012.................................................................................................15-7Table 15-10 Other external ports of the BTS3012.............................................................................................15-7

Table 15-11 Climatic requirements of the BTS3012..........................................................................................15-8

Table 15-12 Requirements for chemically active materials of the BTS3012.....................................................15-9

Table 15-13 Mechanical stress requirements of the BTS3012...........................................................................15-9

Table 15-14 Climatic requirements..................................................................................................................15-10

Table 15-15 Requirements for physically active substances............................................................................15-11

Table 15-16 Requirements for chemically active substances...........................................................................15-11

Table 15-17 Mechanical stress requirements...................................................................................................15-12

Table 15-18 Climatic requirements..................................................................................................................15-13

Table 15-19 Requirements for physically active substances............................................................................15-14

Table 15-20 Requirements for chemically active substances...........................................................................15-14

Table 15-21 Mechanical stress requirements...................................................................................................15-14

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About This Document

PurposeThis document provides an overview of the BTS3012. It describes the components, softwareand hardware structure, subsystems, configuration type, signal flow, clock synchronization, andtopologies of the BTS3012. This document also lists the technical specifications of the capacity,RF, engineering, lightning protection, and physical ports of the BTS3012.

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

Product Name Product Version

BTS3012 V300R004

V300R005

V300R006

V300R008

Intended AudienceThis document is intended for:

l Network plannersl Field engineersl System engineers

Change HistoryFor changes in the document, refer to Changes in BTS3012 Product Description (for 18TRXs) .

Organization1 Introduction to BTS3012 (for 18 TRXs)

This describes the components, physical structure, software structure, and logical structure of the BTS3012.

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2 BTS3012 Common Subsystem

This describes the common subsystem of the BTS3012. The BTS3012 common subsystem provides clock reference for the BTS, collects and monitors environment alarms, andsynchronizes the BTS with the entire network.

3 Signal Protection Subsystem of the BTS3012

This describes the signal protection subsystem of the BTS3012. The signal protection subsystem provides lightning protection for the E1 signals and other signals and provides signal access.The functions of the signal protection subsystem are performed by the set-on-top subrack of theBTS3012 cabinet.

4 BTS3012 Double-Transceiver Subsystem

This describes the double-transceiver subsystem of the BTS3012. The functions of the BTS3012double-transc eiver subsystem are performed by the DTRUs in the DTRU subrack. Thesefunctions are signal modulation and demodulation, power amplification, and combination

output.5 BTS3012 RF Front-End Subsystem

This describe s the BTS3012 RF front-end subsystem. The functio ns of the BTS3012 RF front-end subsystem are performed by the boards in the DAFU subrack.

6 Antenna Subsystem of the BTS

This describes the structure and functions of the BTS antenna subsystem. The BTS antennasubsystem transmits and receives RF signals between the antenna port of the BTS cabinet andthe antenna. The antenna subsystem consists of the antenna, feeder, jumper, and TMA.

7 BTS3012 P ower Subsystem

This describes the power subsystem of the BTS3012. The power distribution unit in the BTS3012 performs the functions of the power subsystem. The power subsystem supplies power to thecomponents in the BTS3012 after lightning protection and EMI filtering.

8 BTS3012 E nvironment Monitoring Subs ystem

This describes the environment monitoring subsystem of the BTS3012. The BTS3012 uses theDEMU and different types of sensors to perform the functions of the environment monitoringsubsystem. The environment monitoring subsystem monitors the temperature, humidity,voltage, and current of the environment. An opti onal DMLC can be connected to the externalalarm box to protect the monitoring signals from lightning strikes.

9 Cabinet Groups of the BTS3012 (for 18 TRXs)

This describe s the cabinet groups of the BTS3012. Th e BTS3012 can hold more TRXs throughcabinet groups. One BTS3012 cabinet can hold up to 18 TRXs and the cabinet groups can holdup to 54 TRXs.

10 OM Subsystem of the BTS

This describes the OM subsystem of the BTS. The OM subsystem of the BTS manages, monitors,and maintain s the software, hardware, and configuration of the BTS. It provides various OMmodes and multiple maintenance platforms to meet different maintenance requirements.

11 Clock Synchronization Modes of the BTS3012

This describes the clock synchronization modes of the BTS3012. The BTS3012 supports threeclock synchronization modes: Abis clock, external reference clock, and internal free-run clock.

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Convention Description

Times New Roman Normal paragraphs are in Times New Roman.

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

Italic Book titles are in italics .

Courier New Terminal display is in Courier New.

3. Command Conventions


Boldface The keywords of a command line are in boldface .

Italic Command arguments are in italic .

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

{x | y | ...} Alternative items are grouped in braces and separated by vertical bars.One is selected.

[ x | y | ... ] Optional alternative items are grouped in square brackets andseparated by vertical bars.One or none is selected.

{ x | y | ... } * Alternative items are grouped in braces and separated by vertical bars.A minimum of one or a maximum of all can be selected.

[ x | y | ... ] * Alternative items are grouped in braces and separated by vertical bars.A minimum of zero or a maximum of all can be selected.

4. GUI Conventions


Boldface Buttons,menus,parameters,tabs,window,and dialog titles are inboldface . For example,click OK .

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

5. Keyboard Operation


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

Key1+Key2 Press the keys concurrently.For example,pressing Ctrl+Alt+Ameans the three keys should be pressed concurrently.

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Key1,Key2 Press the keys in turn.For example,pressing Alt,A means the twokeys should be pressed in turn.

6. Mouse Operation

Action Description

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

Double-click Press the primary mouse button twice continuously and quicklywithout moving the pointer.

Drag Press and hold the primary mouse button and move the pointer

to a certain position.

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1 Introduction to BTS3012 (for 18 TRXs)About This Chap ter

This describe s the components, physical structure, software structure, and logical structure of the BTS3012 .

1.1 Components of the BTS3012 SystemThis describe s the components of the BTS3012 system. The BTS3012 system consists of theBTS3012 cab inet, antenna subsystem, OM equipment, and auxiliary equipment.

1.2 Overview of the BTS3012This describe s the characteristics of the BTS3012. The BTS3012 is an indoor macro BTS thatsupports the double-transceiver unit (DTRU). One BTS3012 cabinet can hold up to 18transceivers ( TRXs). The BTS3012 supports the evolution to the GSM/EDGE Radio Access

Network (GE RAN). Thus, it is widely used in densely populated areas with high traffic volumeand wide cov erage requirements.

1.3 Physical Structure of the BTS3012 (for 18 TRXs)This describe s the physical structure of the BTS3012. The BTS3012 consists of the BTS3012cabinet, anten na subsystem, and operation and maintenance (OM) equipment.

1.4 Software Structure of the BTS3012/BTS3012AEThis describes the software structure of the BTS3012/BTS3012AE. The BTS3012/BTS3012AEsoftware consists of the signaling processing software, baseband signal processing software,

OM software, and transmission equipment control software.1.5 Logical Structure of the BTS3012This describes the logical structure of the BTS3012. Logically, the BTS3012 consists of thecommon subsystem, signal protection subsystem, double-transceiver subsystem, RF front-endsubsystem, power subsystem, environment monitoring subsystem, and antenna subsystem.

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1.1 Components of the BTS3012 SystemThis describes the components of the BTS3012 system. The BTS3012 system consists of theBTS3012 cabinet, antenna subsystem, OM equipment, and auxiliary equipment.

Figure 1-1 shows the BTS3012 system.

Figure 1-1 BTS3012 system

BTS3012 cabine t

Auxiliaryequipment

Antennasubsystem

Site m aintenance equipm ent

BTS3012 syste m

CabinetThe BTS3012 cabinet is the core of the BTS3012 system. The cabinet processes basebandsignals and RF sig nals.

Antenna SubsystemThe antenna subsystem receives UL signals and transmits DL signals on the Um interface.

OM EquipmentThe OM equipment performs the functions of the BTS subsystem such as security management,alarm management, data configuration, and maintenance management. For details, refer to OM

Functions of the BTS . The BTS3012 supports three OM Modes of the BTS : Site MaintenanceTerminal, LMT, and Network iManager.

Auxiliary EquipmentThe BTS3012 can be configured with the auxiliary equipment such as Sidepower , EMU ,EAC-2 and various sensors . The auxiliary equipment converts the power supply, monitors theenvironment of the equipment room and the BTS, and reports environment alarms.

1.2 Overview of the BTS3012

This describes the characteristics of the BTS3012. The BTS3012 is an indoor macro BTS thatsupports the double-tran sceiver unit (DTRU). One BTS3012 cabinet can hold up to 18

1 Introduction to BTS3012 (for 18 TRXs)BTS3012


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transceivers (TRXs). The BTS3012 supports the evolution to the GSM/EDGE Radio Access Network (GERAN). Thus, it is widely used in densely populated areas with high traffic volumeand wide coverage requirements.

The BTS3012 has the following features:

l One cabinet can hold up to 18 TRXs and multiple cabinets can hold up to 54 TRXs.

l Supports the Abis over IP and Abis transmission optimization.

l Supports the Hub BTS function.

l Supports soft synchronization on the Um interface.

l Supports rapid switchover of the ring topology.

l Supports synchronization of the entire network through the GPS

l Supports the Power Boost Technology (PBT). The maximum output power of the TRX canreach up to 100 W.

l

The static sensitivity of the TCH/FS is -112.5 dBm (typical value in normal temperature).l Supports transmit diversity and 4-way receive diversity.

l Supports baseband frequency hopping and RF frequency hopping

l Supports multiple transmission modes: E1, T1, STM-1, microwave, and satellitetransmission

l Supports multiple frequency bands: 850 MHz, 900 MHz, 1800 MHz, and 1900 MHz. Thiscan meet the requirements of operators in different regions.

1.3 Physical Structure of the BTS3012 (for 18 TRXs)This describes the physical structure of the BTS3012. The BTS3012 consists of the BTS3012cabinet, antenna subsystem, and operation and maintenance (OM) equipment.

Physical Structure of the BTS3012 CabinetThe components of the BTS3012 cabinet are the DAFU subrack, DTRU subrack, fan subrack,common subrack, signal lightning protection subrack, transmission subrack, and power distribution unit.

Figure 1-2 shows a fully configured BTS3012 cabinet in S6/6/6 configuration.



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Figure 1-2 Fully configured BTS3012 cabinet

Air Inlet

Wiring

DTRU

DTRU

DTRU

DTRU

DTRU

Wiring

FAN

Transmission Unit

DTMU

DTMU

DCSU

Power and EMC

9U

8

2U

9U

2U

1U

9U

2U

6

5

4

3

1

7

Busbar

D AFU

D AFU

D AFU

D AFU

D AFU

D AFU

DEMU

Wiring

Air Inlet

DTRU

DTRU

DTRU

DTRU

Wiring

2

DCCU

D ATU

DMLC

DELC1

DELC0

DS

AC

(1) Transmission subrack (2) Common subrack (3) DTRU subrack 0

(4) Fan subrack (5) DTRU subrack 1 (6) DAFU subrack

(7) Power distribution unit (8) Signal lightning protection subrack

l

DAFU subrack The DAFU subrack can be configured with the DDPU , DCOM , DFCU , or DFCB .

For details on the DAFU subrack, refer to 5 BTS3012 RF Front-End Subsystem .l DTRU subrack

The DTRU subracks can hold up to nine DTRU s.

For details on the DTRU subrack, refer to 4 BTS3012 Double-Transceiver Subsystem .l Fan subrack

The fan subrack is configured with one fan box that holds four fans and one fan monitoring board. The fan monitoring board detects the temperature at the air inlets at the bottom of the cabinet and automatically adjusts the fan speed.

For details on the fan subrack, refer to Fan Box .




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l Common subrack

The common subrack is installed below the fan subrack. It holds the following parts:

DTMU

DEMU

DATU

DCSU

DCCU

DABB

DPTU

DGPS

For details on the common subrack, refer to 2 BTS3012 Common Subsystem .l Signal lightning protection subrack

The signal lightning protection subrack is installed on top of the cabinet. It is configuredwith the following boards:

DMLC

DELC

DSAC

For details on the functions of the signal lightning protection subrack, refer to 3 SignalProtection Subsystem of the BTS3012 .

l Power distribution unit

The power distribution unit consists of the DC lightning arrester, EMI filter, PGND bar, busbar terminal socket on top of the cabinet, and the busbar at t he right of the cabinet.

For details on the power distribution unit, refer to 7 BTS3012 Power Subsystem .l Transmission subrack

The transmission subrack is located below the common subrack. The transmission subrack reserves spac e for installing the baseband unit (BBU). The SDH and microwavetransmission equipment can be installed in the transmission subrack.

Physical Structure of the Antenna Subsystem

For details on the ante nna sub system, refer to 6 Antenna Subsystem of the BTS .

Physical Structure of the OM Equipment

For details on the OM equipment, refer to 10 OM Subsystem of the BTS .

1.4 Software Structure of the BTS3012/BTS3012AEThis describes the soft ware st ructure of the BTS3012/BTS3012AE. The BTS3012/BTS3012AEsoftware consists of the signaling processing software, baseband signal processing software,OM software, and tra nsmissi on equipment control software.

Figure 1-3 shows the software structure of the BTS3012/BTS3012AE.



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Figure 1-3 Software structure of the BTS3012/BTS3012AE

Signalingprocessing softwate

Baseband signalprocessing software

OM andtransmission device

control software

Signaling Processing Software

The signaling processing software is the core of the BTS3012/BTS3012AE. Most services of

the BTS3012/BTS3012AE are processed by TRXs. The signaling processing software runs onthe DTRU. As the control part of the DTRU, the signaling processing software performs thefollowing functions:

l Transmits layer 3 messages transparently between the Um interface and the Abis interface

l Assists the BSC to manage radio resources

l Provides part of layer 3 functions of the Um interface

l Provides LAPD functions of the Abis interface

l Provides LAPDm functions of the Um interface

l Provides OM functions for the DTRU

Baseband Signal Processing Software

The baseband signal processing software runs on the DTRU. It performs the following functions:

l Encodes/decodes voice, data, and signaling on the radio channels

l Demodulates received signals

l Processes the signals on the Um interface

Control Software of OM and Transmission Equipment

The OM software runs on the DTMU. It is the common control part of the BTS3012/BTS3012AEsoftware and the core of the BTS3012/BTS3012AE OM subsystem.

The OM software performs the following functions:

l Downloads BTS software

l Initializes the BTS

l Monitors and manages the operation of the BTS

l Collects alarm information

l Traces resources usage and interface messages

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l Controls the terrestrial transmission link between the BSC and the BTS

l Controls the remote loopback test of the DTMU

l The transmission link between the BTS and the BSC can be configured flexibly. Thetransmission link supports the star, tree, and chain topologies.

1.5 Logical Structur e of the BT S3012This describes the logical structure of the BTS3012. Logically, the BTS3012 consists of thecommon subsyste m, signal protection subsystem, d ouble-transceiver subsystem, RF front-endsubsystem, power subsystem, environment monit oring subsystem, and antenna subsystem.

Figure 1-4 shows the logical structure o f the BTS3012.

Figure 1-4 Logical structure of the BTS3012

MS

Monitor signal

DTRU

DTRU

E1

Power subsystem

Antennasubsystem

Double-transceiver subsystem

Monitor signal

Commonsubsystem

Signalprotectionsubsystem

Opticalcable

RF fron t-endsubsystem

DTRU

DTRU

DDPU

DCOM

TMA

TMA

DTMU

DEMU

DCOM

DDPU

DATU

DSAC

DELC

DMLC

Opticaltransmission

equipment(optional)

BSC

Externalmonitoringequipment

NOTE

The equipment shown in dotted box in Figure 1-4 is optional. In addition, the RF subsystem can also beconfigured with the DFCU and the DFCB.

For details on the subsystems of the BTS3012, refer to:

l Commo n Subsyste m

l Signal Protection Subsystem

l Double-Transceiver Subsystem

l RF Front-End Subsystem

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2 BTS3012 Common SubsystemAbout This Chapter

This describes the common subsystem of the BTS3012. The BTS3012 common subsystem provides clock reference for the BTS, collects and monitors environment alarms, andsynchronizes the BTS with the entire network.

2.1 Components of the BTS3012 Common Subsystem (for 18 TRXs)This describes the components of the BTS3012 common subsystem. These components are theDTMU, DEMU, DATU, DCSU, DABB, DPTU, DCC, and DGPS.

2.2 Functions of the BTS3012/BTS3012AE Common SubsystemThis describe s the functions of the BTS3012/BTS3012AE common subsystem. The commonsubsystem m anages and controls other subsystems and modules. It introduces E1 signals intothe BTS, pro vides clock reference for the BTS, collects and monitors environment alarms, andsynchronizes the BTS with the entire network.

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2.1 Components of the BTS3012 Common Subsystem (for 18TRXs)

This describes the components of the BTS3012 common subsystem. These components are theDTMU, DEM U, DATU, DCSU, DABB, DPTU, DCC, and DGPS.

ComponentsFigure 2-1 shows the boards in the BTS3012 common subrack.

Figure 2-1 Boards in the BTS3012 common subrack

DTMU

DTMU

DEMU

DCSU

DCCU

0 1 2 3 4 5 6

D ATU

Table 2-1 lists the mapping between the boards and the slot numbers.

Table 2-1 Mapping between boards and slot numbers in the BTS3012 common subrack

Board Slot No.

DTMU Slot 0 or 1

DEMU Slot 2, 3, or 4

DABB Slot 2, 3, or 4

DPTU Slot 3 or 4

DGPS Slot 2, 3, or 4

DATU Slot 2, 3, or 4

DCSU Slot 5

DCCU Slot 6

NOTE

The number of slots in the BTS3012 (for 18 TRXs) common subrack is reduced from eight to seven.

The DTMU is a mandatory board. It can work in active/standby mode, and thus two DTMUs can beconfigured .

External ConnectionsFigure 2-2 shows the external connections of the BTS3012 common subrack.

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Figure 2-2 External connections of the BTS3012 common subrack

2.2 Functions of the BTS3012/BTS3012AE CommonSubsystem

This describes the functions of the BTS3012/BTS3012AE common subsystem. The commonsubsystem manages and controls other subsystems and modules. It introduces E1 signals intothe BTS, provides clock reference for the BTS, collects and monitors environment alarms, andsynchronizes the BTS with the entire network.

The common subsystem performs the following functions:

l Provides Abis over IP functionl Provides the BTS with the convergence function of a Hub

l Provides the Clock over IP function

l Manages and controls other subsystems and modules

l Connects the BTS to the BSC through E1 links: Four channels (default) or eight routes(when specified) of E1 signals are supported

l Outputs digital alarm signals and extended digital control signals

l Distributes and manages clock signals for the entire BTS and provides hot backup for theclock units

l Synchronizes the BTS with the entire network and provides BITS synchronization clock inputs

l Maintains and monitors the BTS equipment

l Guarantees the normal operation of the equipment by monitoring and collecting alarminformation from the smoke, water, temperature, humidity, infrared, and door controlsensors

l Reports alarms related to the Remote Electrical Tilt (RET) antennas and the current fromthe feeder

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3 Signal Protection Subsystem of the BTS3012About This Chapter

This describes the signal protection subsystem of the BTS3012. The signal protection subsystem provides lightning protection for the E1 signals and other signals and provides signal access.The functions of the signal protection subsystem are performed by the set-on-top subrack of theBTS3012 cabinet.

3.1 Components of the BTS3012 Signal Protection SubsystemThis describes the components of the BTS3012 signal protection subsystem. The functions of the signal protection subsystem are performed by the set-on-top subrack, which consists of the

DMLC, DEL C, and DSAC.3.2 Functions of the BTS3012 Signal Protection SubsystemThis describes the functions of the BTS3012 signal protection subsystem. The signal protectionsubsystem pr ovides lightning protection for the E1 signals and the signal access.

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3.1 Components of the BTS3012 Signal ProtectionSubsystem

This describes the components of the BTS3012 signal protection subsystem. The functions of the signal protection subsystem are performed by the set-on-top subrack, which consists of theDMLC, DELC, and DSAC.

Components

Figure 3-1 shows the bo ards in the BTS3012 set-on-top subrack.

Figure 3-1 Boards in the BTS3012 set-on-top subrack

DMLC

DELC1

DELC0

DS AC

0 1 2 3

Table 3-1 lists the mapping between the boards and the slot numbers.

Table 3-1 Mapping between boards and slot numbers in the set-on-top subrack

Board Slot No.

DMLC Slots 0, 1, or 2

DELC Slots 0, 1, or 2

DSAC Slot 3

NOTE

l The DMLC is an optional board delivered with the DEMU. One DLMC is delivered with the DEMU,when the DEMU needs to be configured in the cabinet.

l The DELC is a mandatory board. One BTS3012 cabinet can be configured with one to three DELCs.

l The DSAC is a mandatory board delivered with the DTMU. One DSAC must be configured, when theDTMU needs to be configured in the cabinet.

External Connections

Figure 3-2 shows the ex ternal connections of the BTS3012 set-on-top subrack.

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4 BTS3012 Double-Transceiver SubsystemAbout This Chapter

This describes the double-transceiver subsystem of the BTS3012. The functions of the BTS3012double-transceiver subsystem are performed by the DTRUs in the DTRU subrack. Thesefunctions are signal modulation and demodulation, power amplification, and combinationoutput.

4.1 Components of the BTS3012 Double-Transceiver Subsystem (for 18 TRXs)This describes the components of the BTS3012 double-transceiver subsystem. The functions of the double-transceiver subsystem are performed by the DTRUs in the DTRU subrack.

4.2 Functions of the BTS3012 Double-Transceiver Subsystem (for 18 TRXs)This describe s the functions of the BTS3012 double-transceiver subsystem. The double-transceiver su bsystem transmits RF signals, receives RF signals, and processes baseband sign als.

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4.1 Components of the BTS3012 Double-TransceiverSubsystem (for 18 TRXs)

This describes the components of the BTS3012 double-transceiver subsystem. The functions of the double-transceiver subsystem are performed by the DTRUs in the DTRU subrack.

Components

Figure 4-1 shows fully configured BTS3012 DTRU subracks.

Figure 4-1 Fully configured DTRU subracks

DTRU

DTRU

DTRU

0 1 2 3 4 5

DTRU

DTRU

DTRU

DTRU subrack1

DTRU

DTRU

DTRU

6 7 8

DTRU subrack0

External ConnectionsFigure 4-2 shows the external connections of the BTS3012 DTRU subracks.

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5 BTS3012 RF Front-End SubsystemAbout This Chapter

This describes the BTS3012 RF front-end subsystem. The functions of the BTS3012 RF front-end subsystem are performed by the boards in the DAFU subrack.

5.1 Components of the BTS3012/BTS3012AE RF Front-End SubsystemThis describes the components of the BTS3012/BTS3012AE RF front-end subsystem whosefunctions are performed by the boards in the DAFU subrack. The DAFU subrack can beconfigured with the DDPU, DCOM, DFCU, DFCB, or the combination of these modules.

5.2 Functions of the BTS3012/BTS3012AE RF Front-End SubsystemThis describe s the functions of the BTS3012/BTS3012AE RF front-end subsystem. TheBTS3012/BT S3012AE RF front-end subsystem duplexes the received signals and the signalstransmitted fr om the TRX, combines the signals for transmission, divides the received signals,and amplifies the received signals with the LNA.

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5.1 Components of the BTS3012/BTS3012AE RF Front-EndSubsystem

This describes the components of the BTS3012/BTS3012AE RF front-end subsystem whosefunctions are performed by the boards in the DAFU subrack. The DAFU subrack can beconfigured with the DDPU, DCOM, DFCU, DFCB, or the combination of these modules.

Components

Part A in Figure 5-1 shows the DAFU subrack configured with the DDPU and part B in Figure5-1 shows the DAFU subrack configured with the DFCU.

Figure 5-1 Fully configured DAFU subrack

DDPU

0 1 2 3 4 5

DDPU

DDPU

A

DFCU

DFCU

DFCU

0 2 4

B

NOTE

l A max imu m of six DDPUs can be configured in the DAFU subrack. The DCOM is used with the DDPUonly when a cell i s configured with more than four TRXs.

l The DFCU is applied only over EGSM900 MHz and DCS1800 MHz bands. It is used only in the S4/4/4or higher cell configurations.

l A maximum of six DFCUs can be configured in the DAFU subrack. The DFCB is cascaded with theDFCU only when the DFCU is expanded to enable the six-in-one function.

l The DDPU and the DFCU can be configured in the same subrack.

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External Connections

Figure 5-2 shows the external connections of the DAFU subrack in the BTS3012/BTS3012AE.

Figure 5-2 External connections of the DAFU subrack in the BTS3012/BTS3012AE

Signal cables betweenthe DCTB and the DAFU subrack

DDPU/DFCU/DFCB

RF RX signal cableDAFU subrack

RF TX signal cable

RF jumper

5.2 Functions of the BTS3012/BTS3012AE RF Front-EndSubsystem

This describes the functions of the BTS3012/BTS3012AE RF front-end subsystem. TheBTS3012/BTS3012AE RF front-end subsystem duplexes the received signals and the signalstransmitted from the TRX, combines the signals for transmission, divides the received signals,and amplifies the received signals with the LNA.

The RF front-end subsystem performs the following functions:l Combines multiple routes of RF TX signals for transmission

l Transmits and receives signals through a duplexer

l Detects and reports antenna Voltage Standing Wave Ratio (VSWR) alarms and low noiseamplification alarms

l Controls the low noise amplification gainl Detects and reports the transmit power on the antenna ports

l Detects and reports the temperature of the boards

l Detects whether a board is in position

l Supports online software upgrade

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6 Antenna Subsystem of the BTSAbout This Chapter

This describes the structure and functions of the BTS antenna subsystem. The BTS antennasubsystem transmits and receives RF signals between the antenna port of the BTS cabinet andthe antenna. The antenna subsystem consists of the antenna, feeder, jumper, and TMA.

6.1 Functions of the Antenna SubsystemThis describes the functions of the antenna subsystem. The BTS antenna subsystem receivesuplink (UL) signals and transmits downlink (DL) signals on the Um interface.

6.2 Typical A ntenna SubsystemThis describe s the typical structure of the antenna s ubsystem and its installation modes.

6.3 Typical R ET Antenna SubsystemThis describe s the typical RET antenna subsy stem. A typical RET antenna subsystem does notshare antennas and feeders with other systems.

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6.1 Functions of the Antenna SubsystemThis describes the functions of the antenna subsystem. The BTS antenna subsystem receivesuplink (UL) signals and transmits downlink (DL) signals on the Um interface.

The antenna subsystem of the BTS performs the following functions:

l Transmits DL signals

l Receives UL signals

l Amplifies UL signals

l Provides lightning protection for the antenna

6.2 Typical Antenna SubsystemThis describes the typical structure of the antenna subsystem and its installation modes.

Table 6-1 Features of the GSM antenna subsystem

Application Scenario Supported Not Supported

Single polarization antenna

Dual polarization antenna

TMA (optional)

Antenna installed on the rooftop

Antenna installed on a tower

The two types of a typical antenna subsystem are as follows:

l Figure 6-1 shows a typical structure of the antenna subsystem, which is installed on therooftop with a dual polarization antenna and without a TMA.

l Figure 6-2 shows a typical structure of the antenna subsystem, which is installed on thetower with a dual polarization antenna and a TMA.

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Figure 6-1 Typical structure of the antenna subsystem (installed on the rooftop with a dual polarization antenna and without a TMA)

10

12

1

3

4

5

6

9

13

117

8

2

(1) Directional antenna (2) Antenna support (3) Outdoor jumper (4) Outdoor cabling rack

(5) Feeder fixing clip (6) Feeder grounding cable (7) Grounding bar (8) Cable connecting to thelightning protection ground

(9) Feeder encapsulated

window

(10) Cable tie (11) Indoor jumper (12) Indoor cabling rack

(13) Feeder



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In this typical configuration, the antenna system consists of the RET antenna, BT, SBT, RCU,and feeders. The AISG port on the SBT is connected to the RCU through an AISG control cable.

6.3.2 Cabinet + BT + Cascaded RET Antenna + RCU + SBTIn this typical configuration, the antenna system consists of the cascaded RET antenna, BT, SBT,RCU, and feeders. The AISG port on the SBT is connected to the RCU through an AISG controlcable.

6.3.1 Cabinet + BT + RET Antenna + RCU + SBTIn this typical configuration, the antenna system consists of the RET antenna, BT, SBT, RCU,and feeders. The AISG port on the SBT is connected to the RCU through an AISG control cable.

NOTE

The common BT transmits DC signal and RF signal, and the OOK BT transmits DC signal, RF signal, andOOK signal. For the RET antenna system, the OOK BT must be used.

Splitters should be installed if multiple antennas are used in one sector in the case of split sectors. For details about the installation of splitters, refer to Installing the Splitters . Splitters are installed between

base stations and antennas using jumpers.

The RET antenna can be controlled through the Huawei OMC or the LMT. The OMC or theLMT sends the control signals to the base station. The base station converts the control signalsinto OOK signals, and then transfers the OOK signals and DC power to the BT. Then, the BTcouples the OOK signals and DC power into the internal conductor of Feeder 1.

After the OOK signals and DC power enters the SBT, the DC power is transferred to the RCUthrough the control cable between the SBT and the RCU. In the SBT, the OOK signals aredemodulated and converted into RS485 signals. Then, the RS485 signals are sent to the RCU.

After the RCU receives the RS485 signals, it runs the command as specified in the signals.

Figure 6-3 shows the configuration of cabinet + BT + RET antenna + RCU + SBT.



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Figure 6-3 Configuration of cabinet + BT + RET antenna + RCU + SBT

6.3.2 Cabinet + BT + Cascaded RET Antenna + RCU + SBTIn this typical configuration, the antenna system consists of the cascaded RET antenna, BT, SBT,

RCU, and feeders. The AISG port on the SBT is connected to the RCU through an AISG controlcable.

NOTE

The common BT transmits DC signal and RF signal, and the OOK BT transmits DC signal, RF signal, andOOK signal. For the RET antenna system, the OOK BT must be used.

Splitters should be installed if sectors are split. For details about the installation of splitters, refer toInstalling the Splitters . Splitters are installed between base stations and antennas using jumpers.

The RET antenna can be controlled through the Huawei OMC or the LMT. The OMC or theLMT sends the control signals to the base station. The base station converts the control signalsinto OOK signals, and then transfers the OOK signals and DC power to the BT. Then, the BT

couples the OOK signals and DC power into the internal conductor of Feeder 1.

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After the OOK signals and DC power enters the SBT, the DC power is transferred to the RCUthrough the control cable between the SBT and the RCU. In the SBT, the OOK signals aredemodulated and converted into RS485 signals. Then, the RS485 signals are sent to the RCU.

After the RCU receives the RS485 signals, it runs the command as specified in the signals.

Cascaded RCUs can be used when the antennas for three sectors are installed on the same poleor tower and within a short distance of each other.

Figure 6-4 shows the configuration of cabinet + BT + cascaded RET antenna + RCU + SBT.

Figure 6-4 Configuration of cabinet + BT + cascaded RET antenna + RCU + SBT



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7 BTS3012 Power SubsystemAbout This Chapter

This describes the power subsystem of the BTS3012. The power distribution unit in the BTS3012 performs the functions of the power subsystem. The power subsystem supplies power to thecomponents in the BTS3012 after lightning protection and EMI filtering.

7.1 Components of the BTS3012 Power SubsystemThis describes the components of the BTS3012 power subsystem. The functions of the BTS3012

power subsystem are performed by the power distribution unit. The power distribution unitconsists of the DC lightning arrester, EMI filter, PGND bar, busbar terminal socket on top of

the cabinet, a nd the busbar at the right of the cabinet.7.2 Power dis tribution principle of the BTS3012The BTS3012 power subsystem provides the input power with lightning protection and filtering,and then distr ibutes power to the components in the BTS3012 cabinet through the busbar.

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7.1 Components of the BTS3012 Power SubsystemThis describes the components of the BTS3012 power subsystem. The functions of the BTS3012

power subsystem are performed by the power distribution unit. The power distribution unitconsists of the DC lightning arrester, EMI filter, PGND bar, busbar terminal socket on top of the cabinet, and the busbar at the right of the cabinet.

Figure 7-1 shows the BTS3012 power subsystem.

Figure 7-1 BTS3012 power subsystem

-48 V DC EMI filter Busbar Load

BTS3012 power subsystem

DClighting arrester

7.2 Power distribution principle of the BTS3012The BTS3012 power subsystem provides the input power with lightning protection and filtering,and then distributes power to the components in the BTS3012 cabinet through the busbar.

DC Power Distribution

Figure 7-2 shows the power distribution of the BTS3012 that uses the external -48 V DC power

input.

Figure 7-2 BTS3012 power distribution (-48 V DC)

- 48 V DC power cable

EMI filter

DAFUsubrack

Commonsubrack

DTRUsubrack

Fan

BBU

User interface Power subsystem

DC lightning arrester

GND cablePGND cable

G N D

- 4 8 V

- 4 8 V

G N D

G N D

- 4 8 V

- 4 8 V

V -

V +

G N D

+

-

-48V DC

Busbar

P G N D

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The external power input is processed through the DC lightning arrester and the EMI filter, andthen sent to the equipment in the cabinet through the 13 power switches on the busbar.

Table 7-1 lists the mapping between the power switches on the busbar and the equipment in thecabinet.

Table 7-1 Mapping between the power switches and the equipment

Power Switch Equipment

SW1 DAFU subrack

SW2SW7 DTRU 0DTRU 5 in DTRU subrack 1

SW8 Fan subrack

*SW9SW11 DTRU 6DTRU 8 in DTRU subrack 0

SW12 Common subrack SW13 Transmission subrack

When the external +24 V DC power input is used, a DC/DC Sidepower power cabinet should be configured with the BTS3012 to convert the external +24 V DC to -48 V DC. Figure 7-3shows the power distribution in the BTS3012.

Figure 7-3 BTS3012 power distribution (+24 V DC)

EMI filter

DAFUsubrack

Commonsubrack

DTRUsubrack

Fan

BBU

User interface Power subsystem

DC lightning arrester

GND cable- 48 V DC power cable

PGND cable

G N D

- 4 8 V

- 4 8 V

G N D

G N D

- 4 8 V

- 4 8 V

V -

V +

G N D

+

-

-48V DC

Busbar

P G N D

DC/DCSidepower

cabinet

+24V DC

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8 BTS3012 Environment Monitoring Subsystem

About This Chapter

This describes the environment monitoring subsystem of the BTS3012. The BTS3012 uses theDEMU and different types of sensors to perform the functions of the environment monitoringsubsystem. T he environment monitoring subsystem monitors the temperature, humidity,voltage, and current of the environment. An optional DMLC can be connected to the externalalarm box to protect the monitoring signals from lightning strikes.

8.1 Components of the BTS3012 Environment Monitoring SubsystemThis describe s the components of the BTS3012 environment monitoring subsystem, whichconsists of th e DDF box, DEMU, and different types of sensors.

8.2 Functions of the BTS3012 Environment Monitoring SubsystemThis describes the functions of the BTS3012 environment monitoring subsystem. The indoor BTS3012 provides comprehensive environment monitoring functions. The functions of theBTS3012 environment monitoring subsystem are performed by the sensors, DTMU, DDF box,and the temperature inside the cabinet is regulated by the fan box.

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8.1 Components of the BTS3012 Environment Monitoring Subsystem

This describes the components of the BTS3012 environment monitoring subsystem, whichconsists of the DDF box, DEMU, and different types of sensors.

Figure 8-1 shows the components of the BTS3012 environment monitoring subsystem.

Figure 8-1 Components of the BTS3012 Environment Monitoring Subsystem

InfraredSensor

Humidity/Temperature

Sensor

Door SecuritySensor/Sensors

Water Immersion

Sensor

SmokeSensor

Output ControlInput Alarm

DEMU

DDFbox

Environmentmonitoring Unit DTMU O&M

NFCB

Environment Monitoring Subsystem

8.2 Functions of the BTS3012 Environment Monitoring

SubsystemThis describes the functions of the BTS3012 environment monitoring subsystem. The indoor BTS3012 provides comprehensive environment monitoring functions. The functions of theBTS3012 environment monitoring subsystem are performed by the sensors, DTMU, DDF box,and the temperature inside the cabinet is regulated by the fan box.

The BTS3012 environment monitoring subsystem provides the following functions:

l Manages and monitors the environment inside the cabinet, the power supply system, andthe charging and discharging of the storage batteries, and reports the monitoring results tothe DTMU.

l

The DPMU collects environment variables, such as the temperature, humidity, smoke,water, and door control, from sensors and reports them to the DTMU. The DTMU performs

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10 OM Subsystem of the BTSAbout This Chapter

This describes the OM subsystem of the BTS. The OM subsystem of the BTS manages, monitors,and maintains the software, hardware, and configuration of the BTS. It provides various OMmodes and multiple maintenance platforms to meet different maintenance requirements.

10.1 OM Modes of the BTSThis describes the OM modes of the BTS. These OM modes consist of the Site MaintenanceTerminal Sys tem, Local Maintenance Terminal (LMT), and Network iManager.

10.2 OM Stru cture of the BTSThis describe s the OM hardware structure an d OM software structure of the BTS.

10.3 OM Fun ctions of the BTSThis describe s the OM functions of the BTS . The BTS OM subsystem handles the messagesending, software management, test management, equipment management, alarm management,clock manage ment, and transmission management.

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10.1 OM Modes of the BTSThis describes the OM modes of the BTS. These OM modes consist of the Site MaintenanceTerminal System, Local Maintenance Terminal (LMT), and Network iManager.

Figure 10-1 shows the components of the BTS OM system.

Figure 10-1 Network structure of the OM system

BSC

VLAN

iManager M2000

LMT

BTS

BTS

Sitemaintenance terminal

Sitemaintenance terminal

To maintain the BTS, use one of the following means:

l Site Maintenance Terminal System: The Site Maintenance Terminal is locally connectedto the BTS through the Ethernet. You can use the Site Maintenance Terminal to operateand maintain the site, cell, Radio Carrier (RC), Baseband Transceiver (BT), channel, and

board. You can use the Site Maintenance Terminal to maintain only one BTS at a time.l Local Maintenance Terminal: The LMT maintains the BTS through the OM links on the

Abis interface, which is an interface between the BSC and the BTS. The LMTcommunicates with the BSC through a LAN. You can use the LMT to operate and maintainthe site, cell, RC, BT, and channel. The LMT is used to configure and modify the data of the BSC and the BTS.

l Network iManager: You can use the iManager M2000 provided by Huawei to maintain theBTS through the OM network. You can use the M2000 to operate the site, cell, channel,and board. You can use the M2000 to maintain several BTSs at a time.

Table 10-1 lists the functions of the BTS OM system.

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Table 10-1 Functions of the BTS OM system

Maintenance Object

Maintenance Items forthe Site MaintenanceTerminal

Maintenance Itemsfor the LMT

MaintenanceItems for theM2000

Sitemaintenance

View Resource

Perform Site Opstart

Conduct RF SpecificationTest

Assign Site ManagementRights

Load Software by Force

Activate Software

Reset Site in Levels

Perform Site Test

Monitor Environment

Test the TransportPerformance

Query Ring TopologyParameters

Query Bar Code

Query Site Alarm DelayTime

Manage board parameters

Test E1 BER

Manage the RET antenna

Provide OpticalTransmission BoardCommand Console (for theBTS3006C/BTS3002Eonly)

Download BTS Software

Configure BTS Software

Load BTS Software

Activate BTS Software

Query BTS RunningStatus

Query BTS Attributes

Reset BTS in Levels

Browse BTSInitialization ProcessMessage

Query Board RunningSoftware Version

Test BTS

Monitor BTS Resource

Monitor Environment

BTS Work Log

Test TransmissionPerformance

Reset BTS Hardware

Provide OpticalTransmission BoardCommand Console

Manage theReport of Performance Data

Manage NE Users



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Maintenance Object




Cellmaintenance

Manage Cell Attributes

Manage Cell ExtendedAttributes

Perform Cell Opstart

Conduct Cell PerformanceTest

Change CellAdministration State

Modify AdministrationState

Perform Force Handover

Send Cell SystemMessage

Query Frequency Scan

Configure FrequencyScan

QueryDistribution of Cells

Check Basic CellConfigurationInformation

Check CCHConfigurationInformation

Query Neighbor Cells

Monitor ObjectConfigurationStatus

SummarizeAlarms of MonitoredObjects

Block/Unblock Cells

BTmaintenance

Perform BT Opstart

Re-initialize BTPerform TRX Full Power Emission

Change BT ManagementState

Conduct BT Loop Test

View Channel State

- -

RCmaintenance

Manage RC Attributes

Manage RC ExtendedAttributes

Perform RC Opstart

Re-initialize RC

Change RC ManagementState

Obtain Auto Power Adjustment Type

Obtain RC Power Mode


Test TRX Performance

Query Power Mode

Query Automatic Power Correction Type

Test TRX Loopback

Test Idle Timeslot

Test CODEC Mode

Reset TRX

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Maintenance Object




Channelmaintenance

Manage ChannelAttributes

Perform Channel Opstart

Change ChannelManagement State

Performing loopback test


Monitor Channel Status

Monitor ChannelInterference Band

Test Channel Loopback

Check Basic CellConfigurationInformation

Check CCHConfigurationInformation

Boardmaintenance

Configure Rack

Configure Board

Manage Board

Query Board RunningSoftware Version

Query Board Match

Query Board Bar Code

Query Board Information

Maintain Clock

Reset Board

Switch Board

Query Power ModuleStatus

Reset Smoke Alarm

Maintain Battery

Set/Query Power Module

Parameters

View NE BoardReports

Query InventoryData

10.2 OM Structure of the BTSThis describes the OM hardware structure and OM software structure of the BTS.

OM Hardware StructureFigure 10-2 shows the OM hardware structure of the BTS3012/BTS3012AE.



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Figure 10-2 OM hardware structure of the BTS3012/BTS3012AE

BSC

DTMU

MMI

DTMUDTMU

DTRU

DTRU

DCOM

DDPU

DTRU

DTRU DTRU

DTRU

DFCU

DFCB

DCOM

DDPU

DFCU

DFCB

DCOM

DDPU

DFCU

DFCB

The OM application of the BTS3012/BTS3012AE runs on the DTMU. The DTMUcommunicates with the BSC and MMI terminal. It also communicates with the boards andmodules in the BTS3012/BTS3012AE cabinet. The DTMUs in the main cabinet group and inthe extension cabinet group work together to assist the management, monitoring, and OM on allthe equipment of one BTS.

The OM procedure of the BTS3012/BTS3012AE is as follows:

1. The DTMU in the main cabinet group receives OM signals from the BSC or the MMIterminal, and then sends the OM signals to the DTMU in the extension cabinet group.

2. The DTMUs in the extension cabinet group send the signals on the CBUS2 and DBUS tothe DTRUs for processing through relevant boards. The DTMUs in the extension cabinetgroup also send the signals on the CBUS3 to the DCOM, DDPU, DFCU, and DFCB for

processing through relevant boards.

3. The DTRU, DCOM, and DDPU (DFCU or DFCB) report their status to the DTMU.

4. The DTMU obtains the status of the BTS by collecting and analyzing the status of all the boards and modules, and then transmits the information to the BSC over the Abis interface.

Figure 10-3 shows the OM hardware structure of the BTS3006C/BTS3002E.




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Figure 10-3 OM hardware structure of the BTS3006C/BTS3002E

BSC

DMCM

MMI

DMCMDMCM

DDRM

DDRM

DDPM

DDRM

DDRM DDRM

DDRM

DDPM DDPM

The OM application of the BTS3006C/BTS3002E runs on the DMCM. The DMCMcommunicates with the BSC and MMI terminal. It also communicates with the modules in theBTS3006C/BTS3002E cabinet. The DMCMs in the main cabinet group and in the extensioncabinet group work together to assist the management, monitoring, and OM on all the equipmentof one BTS.

The OM procedure of the BTS3006C/BTS3002E is as follows:

1. The DMCM in the main cabinet group receives OM signals from the BSC or the MMIterminal, and then sends the OM signals to the DMCM in the extension cabinet group.

2. In each cabinet group, the DMCM sends the CBUS2 and DBUS signals to the DDRMs inthe cabinet group through the relevant modules. The DMCM also sends the CBUS3 signalsto the DDPMs in the cabinet group through the relevant modules.

3. The DDRM and DDPM report their status to the DMCM.

4. The DMCM obtains the status of the BTS by collecting and analyzing the status of all themodules, and then transmits the information to the BSC and the MMI terminal over theAbis interface.

OM Software Structure

Figure 10-4 shows the OM software structure of the BTS.



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Figure 10-4 OM software structure of the BTS

Messagedistribution

module

Softwaremanagement

module

Testmanagement

module

Equipmentmanagement

module

Alarmmanagement

module

Clockmanagement

module

Transmissionmanagement

module

BSC

Operation andmaintenace equipment

Signalingprotocol software

Datacenter

Operation andmaintenance software

Together with the signaling protocol software, data center, and BSC, the OM software fulfills

the transmission management and clock management functions. The OM software consists of the following modules:

l Message sending module

l Software management module

l Test management module

l Equipment management module

l Alarm management module

l Clock management module

l Transmission management module

10.3 OM Functions of the BTSThis describes the OM functions of the BTS. The BTS OM subsystem handles the messagesending, software management, test management, equipment management, alarm management,clock management, and transmission management.

l Message sending Receiving the messages from the BSC, MMI, or other boards, and then sending these

messages to the management modules

Ensuring that the states of the logical objects and physical objects are consistent in theBSC, DTMU, and boards




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Recording the running status of the BTS through logsl Software management

Downloading the software for the boards

Fulfilling the functions, such as site configuration, board configuration, and dynamicdata configurationl Test management

Conducting the board in-position test

Providing the test of Abis links and channels for the DTRU and the self checking for the site, cell, TRX, and board

l Equipment management Supporting the configuration and management of boards

Supporting the management of warm backup for the active and standby DTMUsl Alarm management

Supporting the fault management of DBUS and CBUS2

Providing complete and correct reports if errors or alarms occur in the BTS

Providing extended alarm branch number and alarm combination, shield, and reportrelated to boards, modules, and environment according to alarm severity levels.

l Clock management Distributing and managing clock signals for the entire BTS, and providing hot backup

for the clock unit Providing flexible configurations of TS switching on the BIU to implement various

networking modesl

Transmission management Performing the E1 timeslots switching, L1 connection, and signaling link L2

management. Supporting the DBUS extension and optimizing the strategy of allocatingthe Abis bandwidth

Configuring the parameters for the

00350942-product description(for 18trx)-(v300r008_02).pdf

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