GBSS8.0 BTS3900A Product Description V1.0_20080304

7/28/2019 GBSS8.0 BTS3900A Product Description V1.0_20080304

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Product Description

HUAWEI BTS3900AV300R008

Issue 01

Date 2008-03-04

HUAWEI TECHNOLOGIES CO., LTD.


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HUAWEI BTS3900A V300R008Product Description

01 (2008-03-04)HUAWEI TECHNOLOGIES

PROPRIETARY 3 49

About This Document

Author

Prepared by Dong Yujiao Date 2008-03-01

Reviewed by Peng Jianhua, Feng Baoshun,Chen Ping, Xu Kai, LiuJianyun, Jin Yan, He Jia, Xia

Jun, Zhao Ming

Date 2008-03-03

Approved by Feng Baoshun Date 2008-03-04

Organization

This document describes the BTS3900A in terms of features, system architecture,functions, OM, reliability, and technical specifications.

This document provides the basic technical features, performance specifications, and

design principles of the BTS3900A.

The following table shows the organization of this document.

Chapter Content

1 Introduction toBTS3900A

This chapter provides an overview of the BTS3900A.

2 SystemArchitecture

This chapter describes the structure, functional modules, andsystem configuration of the BTS3900A.

3 Ports This chapter describes the physical ports of the BTS3900A.

4 Product

Features

This chapter describes the main features of the BTS3900A.

5 OM System This chapter describes the components and functions of the OMsystem.

6 Reliability This chapter describes the measures taken in reliability designof the BTS3900A in terms of system, hardware, and software.


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PROPRIETARY 4 49

Chapter Content

7 TechnicalSpecifications

This chapter lists the main performance and engineeringspecifications of the BTS3900A.

A Technical

Standards

The appendix lists the compliant technical standards of the

BTS3900A.

B Glossary The appendix lists the glossary in this manual.

C Acronyms andAbbreviations

The appendix lists the acronyms and abbreviations in thismanual.


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PROPRIETARY 5 49

Change History

Issue Description Issue Date Author Approved by

01 Initial commercialrelease

2008-03-04 Dong Yujiao FengBaoshun


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PROPRIETARY 6 49

Contents

1 Introduction to BTS3900A..............................................................................................9

1.1 Overview........................................................................................................................................... 9

1.2 Appearance of the BTS3900A........................................................................................................ 10

1.3 Benefits of the BTS3900A ...............................................................................................................11

1.3.1 Efficient Site Usage and Fast Networking..............................................................................11

1.3.2 Cost-Effective Solutions for Capacity and Coverage .............................................................11

1.3.3 Operation in an Environment-Friendly Way .......................................................................... 12

1.3.4 Reliable OM with Minimized OPEX ....................................................................................... 12

1.3.5 Smooth Evolution to Future-Oriented Network ..................................................................... 12

2 System Architecture .....................................................................................................13

2.1 Structure of the Cabinet.................................................................................................................. 13

2.2 BTS3900A Modules........................................................................................................................ 15

2.2.1 BBU3900 ............................................................................................................................... 15

2.2.2 DRFU..................................................................................................................................... 17

2.2.3 GATM..................................................................................................................................... 20

2.2.4 DCDU-02 ............................................................................................................................... 21

2.2.5 FMUA..................................................................................................................................... 22

2.2.6 FAN Unit ................................................................................................................................ 23

2.2.7 BTS3900A Sensors ............................................................................................................... 23

2.2.8 APM30 Power Cabinet .......................................................................................................... 23

2.2.9 RF Cabinet ............................................................................................................................ 23

2.2.10 APM30 Transmission Cabinet ............................................................................................. 23

2.2.11 APM30 Battery Cabinet ....................................................................................................... 23

2.3 Recommended Configuration......................................................................................................... 23

3 Ports...............................................................................................................................26

3.1 Power Port ...................................................................................................................................... 26

3.2 Transmission Ports ......................................................................................................................... 26

3.3 Alarm Ports ..................................................................................................................................... 27

3.4 Other Ports...................................................................................................................................... 27

4 Product Features...........................................................................................................29

4.1 High Capacity.................................................................................................................................. 29

4.2 Wide Coverage............................................................................................................................... 29

4.3 Multi-Band Application .................................................................................................................... 29

4.4 Easy Installation.............................................................................................................................. 29


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PROPRIETARY 7 49

4.5 Flexible Networking ........................................................................................................................ 30

4.6 Convenient OM............................................................................................................................... 30

4.7Various Transmission Modes.......................................................................................................... 30

4.8 Enhanced Antenna System ............................................................................................................ 31

4.9 Optimized SASU and SASA ........................................................................................................... 31

4.10 High Environment Adaptability...................................................................................................... 31

4.11 Smooth Expansion and Evolution................................................................................................. 32

4.12 Flexible Clock and Synchronization.............................................................................................. 32

5 OM System ....................................................................................................................34

5.1 OM System ..................................................................................................................................... 34

5.2 OM Functions ................................................................................................................................. 35

5.2.1 Equipment Management ....................................................................................................... 35

5.2.2 Software Management .......................................................................................................... 35

5.2.3 Configuration Management ................................................................................................... 35

5.2.4 Service Management............................................................................................................. 36

5.2.5 Performance Management.................................................................................................... 36

5.2.6 Security Management............................................................................................................ 36

5.2.7 Alarm Management ............................................................................................................... 36

5.2.8 Environment Monitoring......................................................................................................... 36

6 Reliability.......................................................................................................................37

6.1 System Reliability ........................................................................................................................... 37

6.2 Hardware Reliability........................................................................................................................ 37

6.3 Software Reliability ......................................................................................................................... 38

6.3.1 Data Redundancy.................................................................................................................. 38

6.3.2 Error Tolerance ...................................................................................................................... 38

7Technical Specifications...............................................................................................39

7.1 RF Specifications............................................................................................................................ 39

7.2 Mechanical Specifications............................................................................................................... 40

7.3 Power Specifications....................................................................................................................... 40

7.4 Surge Protection Specifications...................................................................................................... 41

7.5 Environment Specifications............................................................................................................. 42

A Technical Standards.....................................................................................................43

A.1 Electromagnetic Compatibility Standards ...................................................................................... 43

A.2 Surge Protection Standards........................................................................................................... 43

A.3 Safety Standards............................................................................................................................ 44

A.4 Environment Standards ................................................................................................................. 44

A.4.1 Operating Environment Standards........................................................................................ 44

A.4.2 Transportation Standard........................................................................................................ 44

A.4.3 Storage Standard .................................................................................................................. 44

A.5 Physical Protection Standard......................................................................................................... 44


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PROPRIETARY 8 49

B Glossary........................................................................................................................45

C Acronyms and Abbreviations......................................................................................48


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01 (2008-03-04) Huawei Technologies Proprietary 9 49

1 Introduction to BTS3900A1.1 Overview

The BTS3900A is the outdoor separated macro base station. It is a member of the3900 GSM BTS family. The 3900 GSM BTS family is the fourth generation BTSdeveloped by Huawei. The family products are classified into indoor macro BTSs,outdoor separated macro BTSs, and DBSs. Through combination of associated BTStypes, the 3900 GSM BTS family enables fast networking with low cost in variousscenarios.0lists the products in the 3900 GSM BTS family.

Table 1-1Products in the 3900 GSM BTS family

BTS Type Model Max.Number ofTRXs perCabinet

Application Scenarios

Indoor

macro BTS

BTS3900 12 Densely populated areas with

high traffic volume Areas that require wide

coverage

Areas where the constructioncost of equipment room is highor the space resource islimited

Outdoorseparatedmacro BTS

BTS3900A 12 Urban/suburban/rural areaswith high traffic volume andwide coverage

Areas where site acquisition isdifficult or the construction cost

of equipment room is high


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BTS Type Model Max.Number ofTRXs perCabinet

Application Scenarios

Distributed

base station

DBS3900 12 Urban/suburban/rural areas

with high traffic volume andwide coverage

Areas where site acquisition isdifficult

Areas where the constructioncost of equipment room is highor the space resource islimited

1.2 Appearance of the BTS3900AThe BTS3900A cabinet contains the APM30 power cabinet and the RF cabinet. Theoptional equipment is the APM30 transmission cabinet and the APM30 batterycabinet.

The BTS3900A cabinet houses the BBU3900 (baseband unit) and the DRFU (doubleradio filter unit). The APM30 transmission cabinet provides a space of 11 U and theAPM30 battery cabinet houses the storage battery.

Figure 1-1 shows the appearance of the BTS3900A.


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Figure 1-1BTS3900A

1.3 Benefits of the BTS3900A

The unified module designing is applied to the 3900 GSM BTS family. The outdoormacro BTS3900A allows multiple radio access technologies (RATs) in one cabinet. Itis small in size and light in weight, and supports the smooth evolution to Long TermEvolution (LTE).

1.3.1 Efficient Site Usage and Fast Networking

The BTS3900A features one of the most compact macro base stations in theindustry with the footprint of only 600 mm x 480 mm.

The BTS3900A has a streamlined modular structure. The part assembly anddisassembly for the BTS3900A are easy and fast.

1.3.2 Cost-Effective Solutions for Capacity and Coverage

The transmit power on top of the cabinet per TRX is up to 45 W (GSM900) and upto 71 W (GSM900) in PBT mode. The DRFU uses the double-transceiver


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2.2 BTS3900A Modules

2.2.1 BBU3900

Figure 2-2 shows the BBU3900 panel.

Figure 2-2BBU3900 panel

The BBU3900 mainly consists of the following modules:

BTS interface unit

Central processing unit

High-speed interface unit Clock unit

Monitoring unit

In addition, the BBU3900 is installed with the FAN unit and power supply unit. Figure2-3 shows the interaction between the modules of the BBU3900.


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Figure 2-3Modules in the BBU3900

The functions of each module are described as follows.

BTS Interface Unit

The BTS interface unit performs the following functions:

Connects the BTS to the BSC

Exchanges timeslot data between the E1 links and the DBUS

Synchronizes the lower-level clock with the upper-level clock

Central Processing Unit

The central processing unit performs centralized management (OM and signalingprocessing) of the entire distributed base station system. It also provides thereference clock for the system. The central processing unit performs the followingfunctions:

Supports the UART communication protocol

Controls the BTS interface unit and communicates with the BSC and BTS

Controls the high-speed interface unit and communicates with the DRFU

Performs clock module functions such as providing and managing BTS clocksignals and supporting external synchronization clock input


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High-Speed Interface Unit

Each BBU3900 provides six CPRI ports. The high-speed interface unit performs thefollowing functions:

Receives uplink baseband data from the DRFU

Transmits downlink baseband data to the DRFU

Clock Unit

The clock unit performs the following functions:

Provides high-precision clock source for the BTS and provides system clockbased on this clock source

Checks the PPL state, provides software phase lock, provides DA adjustment,and generates frame numbers

Monitoring Unit

The monitoring unit collects various Boolean alarm information, and reports the alarminformation to the central processing unit.

2.2.2 DRFU

The DRFU performs modulation and demodulation between baseband signals andRF signals, processes data, and combines and divides signals.

Figure 2-4 shows the DRFU panel.


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Figure 2-4DRFU panel

The DRFU consists of the following components:

High-speed interface module

Signaling processing unit

Power amplifier

Dual-duplexer

Figure 2-5 shows the components of the DRFU.


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Figure 2-5Components of the DRFU

The functions of each module are described as follows.

High-Speed Interface Module

The high-speed interface module performs the following functions:

Transfers the data from the BBU to the signal processing unit

Transfers the data from the signal processing unit to the BBU

Signaling Processing Unit

The signal processing unit consists of two uplink RX channels and two downlink TXchannels. Each channel supports two carriers.

The uplink RX channels perform the following functions:

Down-converts the RF signals to IF signals

Amplifies the IF signals and performs IQ demodulation

Performs analog-to-digital conversion through the ADC

Samples digital signals

Performs matched filtering

Supports digital automatic gain control (DAGC)

Encapsulates data

The downlink TX channels perform the following functions:

Decapsulates the clock signals, control signals, and data signals from the BBUand sends them to associated units

Shapes and filters downlink signals

Performs digital-to-analog conversion through the DAC and performs IQmodulation

Up-converts the IF signals to the transmit band


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Power Amplifier

The power amplifier amplifies the low-power RF signals from the signal processingunit.

Dual-Duplexer

The dual-duplexer performs the following functions:

Multiplexes RX signals and TX signals so that they can share the same antennachannel

Filters RX signals and TX signals

2.2.3 GATM

The GSM antenna and TMA control module (GATM) is a module that controls theantenna and TMA. The GATM is optional. 0 shows the GATM panel.

Figure 2-6GATM panel

The GATM performs the following functions:

Controls the RET antenna


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Feeds power to the TMA

Reports the RET control alarm signals

Monitors the current from the feeder

2.2.4 DCDU-02

The DCDU-02 (direct current distribution unit) provides four48 V DCoutputs.0 shows the DCDU-02 panel.

Figure 2-7DCDU-02 panel

The DCDU-02 performs the following functions:

Leads the 48 V DC into the cabinet Distributes four 48 V DC outputs to boards and modules in the cabinet

Provides surge protection of 10 kA in differential mode and 15 kA in commonmode and provides dry contact alarms related to surge protection failures


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2.2.5 FMUA

The FMUA supplies power to the FAN unit and monitors the environment in thecabinet.

Figure 2-8 shows the FMUA panel.

Figure 2-8FMUA panel

The FMUA performs the following functions:

Leads 48 V DC into the cabinet and supplies 48 V DC power input for the FANunit.

Collects environment alarm information in the cabinet. The environment alarms

are related to humidity, smoke, water immersion, and door status. Collects surge protection alarm information of the DC power distribution unit.

Monitors the operating status of fans. The fan speed can be adjusted based onthe temperature or adjusted by the central processing unit.

Controls the fan rotation. The fan stops working when the ambient temperature islow.

Supports the detection and reporting of the temperature.


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RecommendedConfiguration

Hardware Configuration Description

S2/2/2 BBU3900: 1 PCS

DRFU: 3 PCS

Power subrack(AC/DC): 1 PCS

DCDU-02: 1 PCS

FAN: 1 PCS

GATM: optional

S4/4/4

S2/2/2+S2/2/2

Cabinet: 1 PCS

BBU3900: 1 PCS

DRFU: 6 PCS


DCDU-02: 2 PCS

FAN: 2 PCS

GATM: optional

recommended betweenthe BBU and the DRFUs.

A maximum of one

GATM is allowed.

S6/6/6 APM30 power cabinet:1 PCS

RF cabinet: 2 PCS

BBU3900: 1 PCS

DRFU: 9 PCS


FAN: 3 PCS

DCDU-02: 3 PCS GATM: optional

S1/1/1+S3/3/3 APM30 power cabinet:1 PCS

RF cabinet: 2 PCS

BBU3900: 1 PCS

DRFU: 8 PCS


FAN: 3 PCS

DCDU-02: 3 PCS GATM: optional

The ring topology isrecommended betweenthe BBU and the DRFUs.

A maximum of twoGATMs are allowed.


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RecommendedConfiguration

Hardware Configuration Description

S4/4/4+S4/4/4 APM30 power cabinet:1 PCS

RF cabinet: 2 PCS BBU3900: 1 PCS

DRFU: 8 PCS


FAN: 3 PCS

DCDU-02: 3 PCS

GATM: optional

The star-and-ring hybridtopology isrecommended between

the BBU and the DRFUs. A maximum of two

GATMs are allowed.


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3 Ports3.1 Power Port

Table 3-1 lists the power port of the BTS3900A.

Table 3-1Power port of the BTS3900A

Port Location Description

L and N terminals Wiring unit of the powersubrack (220 V AC)

220 V AC input

3.2 Transmission Ports

Table 3-2 lists the transmission ports of the BTS3900A.

Table 3-2Transmission ports of the BTS3900A

Port Connector Type Description

INSIDE DB25 male Transfers four E1s/T1s between the UELPand the GTMU

OUTSIDE DB26 male Provides the input and output of fourE1s/T1s between the BBU and the BSC

CPRI SFP Provides the input and output of CPRIsignals between the BBU and the DRFU

E1/T1 DB26 male Provides the input and output of fourE1s/T1s between the GTMU and the UELPor between the GTMU and the BSC

FE0 RJ45 Reserved port.

Connects the BBU to a routing device in theequipment room through the Ethernet cableto transmit network information.


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Port Connector Type Description

FE1 DLC Reserved port.

Connects the BBU to a routing device in theequipment room through the optical cable to

transmit network information.

3.3 Alarm Ports

In the BTS3900A system, the alarms ports vary with the optional modules configuredin the BBU3900.

When the BBU3900 is configured with one UPEU, 2 RS485 buses and 16 drycontact signals are provided.

When the BBU3900 is configured with two UPEUs or one UPEU plus one UEIU,4 RS485 buses and 32 dry contact signals are provided.

Table 3-3 describes the alarm ports of the BTS3900A.

Table 3-3Alarm ports of the BTS3900A

Port ConnectorType

Description

MON0 RJ45 Provides the input and output of the externallycollected environment monitoring signals inthe format of the RS485 frame to the GTMU

MON1 RJ45 Provides the input and output of the externallycollected environment monitoring signals in

the format of the RS485 frame to the GTMUEXT-ALM0 RJ45 Transmits the externally collected environment

monitoring signals in the format of the drycontact signals to the GTMU

EXT-ALM1 RJ45 Transmits the externally collected environmentmonitoring signals in the format of the drycontact signals to the GTMU

3.4 Other Ports

Table 3-4 lists other external ports of the BTS3900A.

Table 3-4Other external ports of the BTS3900A

Port ConnectorType

Description

ETH RJ45 For local maintenance and commissioning


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Port ConnectorType

Description

USB USB Reserved.

Connected to a USB disk for automatic

software upgradeTST USB Connected to a tester for testing the output

clock signals


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4 Product Features4.1 High Capacity

The BTS3900A cabinet in full configuration houses six DRFUs.

The BTS3900A cabinet supports up to 12 TRXs in the maximum cellconfiguration of S4/4/4.

The BTS3900A cabinet supports up to six sectors.

A site configured with the BTS3900As supports up to 72 GSM TRXs in themaximum cell configuration of S24/24/24.

4.2 Wide Coverage The static sensitivity of the TCH/FS is 113 dBm (typical value at normal

temperature).

The BTS3900A supports two-way and four-way receive diversity to improve theuplink coverage.

The BTS3900A supports transmit diversity and PBT to improve the downlink

coverage. The BTS3900A supports omni-directional and directional coverage modes.

The TMA can be configured on the BTS3900A to improve the receive sensitivity.

The BTS3900A supports baseband FH, RF FH, antenna hopping, and dynamicMAIO to suppress the network interference and therefore to expand the networkcapacity.

4.3 Multi-Band Application

The BTS3900A supports GSM900 and DCS1800 catering to requirements of thetelecom operators in different regions.

4.4 Easy Installation The BTS3900A allows the installation on the concrete floor or ESD floor.


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4.8 Enhanced Antenna System Supports the RET antenna to optimize the performance of network coverage, to

suppress network interference, and to expand network capacity

Supports remote batch operations, batch software upgrades, and batch

adjustment on the tilt of the RET antenna Supports the automatic scanning of the RET antenna

Supports Antenna Interface Standard Group 2.0 (AISG2.0) and AISG1.1

Supports the cascaded RET antennas

4.9 Optimized SASU and SASA

The same band antenna sharing unit (SASU) and the same band antenna sharingadapter (SASA) are adopted to provide low insertion loss and to reduce the cost ofnetwork deployment.

The SASU is an important component for the solution of co-antenna on the sameband. It enables two networks at the same band to share the existing antenna. TheSASU is applied to two scenarios: co-antenna between a 2G cell and a 3G cell, andco-antenna between two 3G cells. In addition, the cost and time of the 3G networkconstruction are minimized.

The SASA is an important component for the solution of co-antenna on the same band.It is applied in the 2G network or the 3G network. In the GSM network, the insertionloss of 0.8 dB is introduced on the downlink. Thus, the two TX carriers are combinedon one antenna without deteriorating the network performance.

4.10 High Environment Adaptability

Table 4-1 lists the environment adaptability standards of the BTS3900A.

Table 4-1Environment adaptability standards of the BTS3900A

Environment Adaptability Description

Waterproofing and dustproofing The DRFU meets IP54 (InternationalProtection).

The PCB meets IP20.

Chemical environment adaptability 3/4C2, general pollution, theindustrial active material is distributedin the entire area or the cities/suburbs

with busy traffic

3/4C3, close to areas with industrialproduction with chemical pollution

Refer to IEC 721-3-3 (class 3K8H)


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Environment Adaptability Description

Biological environment adaptability 4B2

Adaptable to the areas where there aremildew and rodents such as rats.

Anti-seismic ETS 300 019-1-3

Special components are added to thestandard cabinet to meetGR-63-CORE Zone 4 in NorthAmerica.

Operation temperature 40 to +55

Power supply 48 V DC, +24 V DC, and 220 V ACinput

Acoustic noise ETS 300 753 4.1E rural level (SPL: 61dBA/25 and 67 dBA/45)

Auxiliary equipment AFB, APM, SPD40R, andUninterruptible Power Supply (UPS) toprovide a solution regarding BTS3900Apower distribution, surge protection,transmission cabling, transmissionequipment installation, and powerbackup.

4.11 Smooth Expansion and Evolution

Capacity expansion

The BTS3900A cabinet in full configuration supports 6 DRFUs and 12 TRXs inthe maximum cell configuration of S4/4/4.

A site configured with the BTS3900As supports up to 72 GSM TRXs in themaximum cell configuration of S24/24/24.

Upgrade

The BTS3900A supports coexistence with the double-transceiver BTS3012AEand the outdoor mini BTS3006C/BTS3002E.

The BTS3900A is developed on the basis of the unified platform for Huaweiwireless products, and supports smooth evolution to the LTE.

4.12 Flexible Clock and Synchronization

The BBU in the BTS3900A cabinet supports multiple clock synchronization modes tomeet the different networking requirements.

It can extract the 8 kHz clock signals through the Abis interface to provide thereference clock for the system.


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It can extract clock signals from the Global Positioning System/Global NavigationSatellite System (GPS/GLONASS).

It can synchronize with the external clock input, namely, the 2 MHz BuildingIntegrated Timing Supply System (BITS) clock.

The BTS3900A can operate for a minimum of 90 days with the internal clock

working in free-run mode.


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5 OM System5.1 OM System

The BTS3900A supports the OM system based on the Man Machine Language (MML)

and the Graphic User Interface (GUI). The OM system enables a general OMmechanism independent of the hardware to meet various requirements of thecustomer in operating and maintaining the equipment, and provides powerful OMfunctions. Figure 5-1 shows the topology of the OM system.

Figure 5-1Topology of the OM system

Site MaintenanceTerminal

BSC

VLAN

iManager M2000

LMT

BTS

BTSSite MaintenanceTerminal

OM system

M2000: network management center LMT: local maintenance terminal

BTS: GSM base transceiver station BSC: base station controller


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The BTS3900A supports three OM modes, which are Site Maintenance Terminalmode, Local Maintenance Terminal mode, and centralized network managementmode.

Site Maintenance Terminal mode: The Site Maintenance Terminal is locallyconnected to the BTS through the Ethernet. You can use the Site MaintenanceTerminal System to operate and maintain the site, cell, Radio Carrier (RC),Baseband Transceiver (BT), channel, and board. In this mode, only one BTS canbe maintained at a time.

LMT mode: The LMT is used to maintain the BTS through the OM links on theAbis 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 andmaintain the site, cell, RC, channel, and board. This mode is used to configureand modify the data of the BSC and BTS.

Centralized network management mode: The Huawei iManager M2000 is used tomaintain the BTS through the OM network. The M2000 can operate and maintainthe site, cell, channel, and board. In this mode, multiple BTSs can be maintained

at a time.

5.2 OM Functions

The OM system of the BTS3900A enables a general OM mechanism independent ofthe hardware. The OM functions consist of equipment management, softwaremanagement, configuration management, service management, performancemanagement, security management, and environment monitoring.

5.2.1 Equipment Management

Through the OM system, you can query the status of all the internal devices

(board/module) and all the external devices (power supply/environmentmonitoring/RET). You can also perform data configuration and status management forsome devices.

5.2.2 Software Management

Provides various functions, such as downloading and activating the BTS software,upgrading patches, and loading and downloading files. The associated tasksinvolve consistency check on the software and hardware releases, releasemanagement, and software upgrade.

Allows upgrade of the BTS software through the USB port on the BBU without aPC.

5.2.3 Configuration Management Performs consistency check on the added, deleted, or modified BTS data

Supports dynamic and static data configuration modes. In dynamic dataconfiguration mode, the modified data takes effect immediately. In static dataconfiguration mode, the modified data takes effect only after the BTS is restarted.

Supports automatic data backup


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5.2.4 Service Management

Supports parameter configuration and alarm querying for the baseband boards,RET antenna, and environment monitoring device.

Supports various OM functions for the RET antenna, such as automatic scanning,

data configuration (antenna tilt and TMA gain), status query, and alarm reporting. Supports complete self-test on hardware installation. The BTS can use the

software package saved in the USB disk to perform local upgrade; thusshortening the upgrade period.

5.2.5 Performance Management

Monitors the performance of the internal and external telecommunicationsnetworks and generates alarms when the performance deteriorates

Monitors the operating status of the BTS such as monitoring the traffic volume onthe ports and measuring the technical data of the BTS

Monitors the usage of key components, such as the CPU and DSP in the board

5.2.6 Security ManagementThe OM system provides security management functions, such as connectionmanagement, user authentication, encryption, and forward resolution between theBTS software and the OMC.

5.2.7 Alarm Management

Supports query of real-time alarms and history alarms

Collects internal and external alarms, such as the environment monitoring deviceinputs and Boolean inputs

Processes alarm correlation to ensure precision and accuracy in locating alarms

Provides functions of saving, interpreting, prompting, shielding, filtering,confirming, clearing, post processing, and reporting of alarms

Detects and reports alarms, and processes alarm correlation in the system

5.2.8 Environment Monitoring

BTSs are usually unmanned and dispersedly distributed. The equipment workingin the adverse environment may incur fire or flood. To ensure the normaloperation of the BTS equipment and to help you handle emergencies, the BTSprovides a complete environment monitoring system.

The environment monitoring system provides customized solutions regardingdoor control, infrared, smoke, water damage, humidity, and temperaturemonitoring.


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6 Reliability6.1 System Reliability

Based on load sharing and redundancy configuration, the BTS3900A optimizes the

technique of detecting/isolating the faults on the board and in the system for thesystem reliability improvement.

Redundancy configuration

The transmission unit, power supply unit, and FAN unit in the system supportredundancy configuration, and the BBU supports load sharing.

The BBU and DRFUs form a ring. When a DRFU in the ring fails, anticlockwiseswitchover is performed; thus greatly improving the system reliability.

Crucial system data, such as software releases and data configuration files, arebacked up to ensure the normal system operation in case of data corruption.

Reliability

The BTS3900A system automatically detects and diagnoses the faults in the

software and hardware, and reports the alarms. In addition, the BTS3900A canmonitor the environment and report environment alarms.

6.2 Hardware Reliability Overcurrent protection

The power system of the BBU and DRFU is protected against overcurrent,improper insertion, and inverse insertion.

Overtemperature protection

The BBU and DRFU are protected against high temperature. When the internaltemperature is high, the system automatically performs power derating or

switches off the power amplifier based on the current temperature. When thetemperature restores normal, the system increases the power level or switcheson the power amplifier.

Monitoring mechanism

The BBU can monitor the environment and reports alarms.

Reliable power supply

Provides a wide range of voltages and surge protection


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Protects the programs and data of the system in case of power failure

Protects the board against overvoltage, overcurrent, and reverse connectionof positive and negative poles

Perfect surge protection

The surge protection box of 1 U high is provided for surge protection. Surge

protection measures are taken for the AC/DC ports, input/output signal ports ofthe cabinet (E1 port and Boolean port), antenna port, and GPS port.

6.3 Software Reliability

Software reliability is guaranteed through data redundancy and powerful errortolerance.

6.3.1 Data Redundancy

Crucial system data, such as software releases and configuration files, are backed upto ensure the normal system operation in case of data corruption.

Redundancy of software releases

The system backs up the software releases, including the BOOTROM, in differentpartitions. When a software release is faulty, the backup release can be usedinstead.

Redundancy of data configuration files

The system backs up the data configuration files in different partitions. When therunning data configuration files are corrupted, the backup data configuration filescan be used instead.

Redundancy of the operation logs

The system records the user operations in a certain period and backs up theinformation in the operating logs. When the system incurs an unknown error, themaintenance personnel can locate the problem by tracing back to the normalstatus, or perform the data restoration.

6.3.2 Error Tolerance

The error-tolerance ability prevents the system crash due to the software error. That is,the system has the self-healing ability. The error-tolerance ability of the system isdescribed as follows:

Scheduled detection on the key resources

Usage check is performed on the software in the system to release thesuspended software resources and generate logs and alarms.

Task monitoring

During the software running, the monitoring process monitors all the tasks. Whenan error occurs in the software or the hardware is faulty, the monitoring processreports alarms and attempts to restore the normal running of the software.

Data check

The system checks data consistency on a regular or event-triggering basis,restores data consistency selectively or preferably, and generates related logsand alarms.


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Watchdog

When the software is running abnormally, the system detects the error throughsoftware watchdog and hardware watchdog, and automatically performs thereset.

7Technical Specifications7.1 RF Specifications

Table 7-1RF specifications of the BTS3900A

Item Specifications

Operating Band RX Band TX Band

P-GSM900 890 MHz to 915 MHz 935 MHz to 960MHz

E-GSM900 880 MHz to 915 MHz 925 MHz to 960

MHz

Frequency band

DCS1800 1710 MHz to 1785MHz

1805 MHz to1880 MHz

Operating Band Operating Mode Output Power(GMSK/8PSK)

Non-combination 45W/30W

Combination 20W/14W

GSM900

PBT 71W/47W

Non-combination 40W/26W

Combination 18W/12W

TX specifications

DCS1800

PBT 63W/42W


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Item Specifications

Operating Band RX Band TX Band

Operating Band Channel Type StaticSensitivity

GSM900 TCH/FS 113 dBm

RX specifications

DCS1800 TCH/FS 113 dBm

7.2 Mechanical Specifications

Table 7-2Mechanical specifications of the BTS3900A

Item Specifications

Dimensions (W mm x D mm x H mm) APM30 power cabinet: 600 480 700

RF cabinet: 600 480 700

Cabinet base: 600 480 200

Weight (kg) RF cabinet (empty cabinet): 58

RF cabinet (full configuration): 130

APM30 power cabinet: 65

APM30 power cabinet + RF cabinet:205

An empty cabinet houses mechanical parts, DCDU-02, FAN, and FMUA. The DRFU,however, is not included.

7.3 Power Specifications

Table 7-3Power specifications of the BTS3900A

Item Specifications

Power input48 V DC (38.4 V DC to 57 V DC)

+24 V DC (+19 V DC to +29 V DC)

220 V AC (176 V AC to 280 V AC)

Powerconsumption

900 MHz TOC

Typical value: 1250 W

Maximum value: 2180 W

1800 MHz TOC


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Typical value: 1400 W

Maximum value: 2480 W

Battery Associated equipment: APM30 battery cabinet

Capacity: 48V/50Ah, 100Ah, or 200Ah

Maximum duration in S4/4/4: 6 hours

The typical power consumption refers to the value measured when the traffic volume is 30%.

7.4 Surge Protection Specifications

Table 7-4Surge protection specifications of the BTS3900A

Port SurgeProtectionMode

Surge Current

Differentialmode

3kA(8/20us)Signal port

Commonmode

5kA(8/20us)

Differentialmode

3kA(8/20us)Transmission port

Commonmode

5kA(8/20us)

Differentialmode

3kA(8/20us)E1 port

Commonmode

5kA(8/20us)

Differentialmode

60kA(8/20us)AC power input port

Commonmode

60kA(8/20us)

Differentialmode

10kA(8/20us)DC power input port

Commonmode

15kA(8/20us)


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7.5 Environment Specifications

Table 7-5Environment specifications of the BTS3900A

Item Specifications

Operatingenvironment

Operating temperature: -40 to +50 (without canopy)

-40 to +55 (with canopy)

Relative humidity: 5% to 100%

Solar radiation: 700 W/m2 (environment temperature:45)

Altitude: 60 m to 3000 m (The BTS operates normally.)

3000 m to 4000 m (The operating temperatureof the BTS drops by 1 each time the altitude increases by200 m.)

Mechanical stress: IEC, ETS, and GR-63

Other specifications meet the requirements in ETS 300019-1-3 Class 3.1.

Transportationenvironment

Transportation temperature: 40 to +70

Relative humidity: 10% to 100% (without wind)

Climatic condition: 2K4, including 2K3 and packagetransportation on 3rd-level roads in high altitude areaswithout environment protection

Mechanical stress:

Meeting the falling requirements in the ISTA andQDKBA1109-2005

Meeting the falling requirements in the GR-63

Meeting the requirements for vibration intransportation in the GR-63

Other specifications meet the requirements in the ETS300 019-1-2 Class 2.3.

Storage environment Storage environment: -40 to +70

Relative humidity: 10% to 100% (without wind)

Other specifications meet the requirements in the ETS300 019-1-1 Class 1.2.

Noise The cabinet is installed with built-in fans.

The noise of a single cabinet is smaller than 6.9 bels.

ETS 300 753 4.1E rural level (sound power: 61 dBA/25and 67 dBA/45)


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A Technical StandardsA.1 Electromagnetic Compatibility Standards

The BTS complies with the following standards related to electromagneticcompatibility:

CISPR 22(2003): limits and methods of measurement of radio disturbancecharacteristics of information"

EN55022(2006) : limits and methods of measurement of radio disturbancecharacteristics of information

CISPR 24 (1998-09+ A1:2001 A2:2003): Information Technology EquipmentImmunity characteristics Limits and methods measurement

IEC61000-4-2: Electromagnetic compatibility(EMC) Part 2:Testing andmeasurement techniques Section 2:Electrostatic discharge immunity test BasicEMC Publication

IEC61000-4-3: Electromagnetic compatibility; Part 3: Testing and measurementtechniques Section 3 radio frequency electromagnetic fields; immunity test.

IEC61000-4-4: Electromagnetic compatibility(EMC) Part 4:Testing andmeasurement techniques Section 4:Electrical fast transient/burst immunity test

Basic EMC publication IEC61000-4-5: Electromagnetic compatibility(EMC) Part 5:Testing and

measurement techniques Section 5:Sruge immunity test

IEC61000-4-6: Electromagnetic compatibility: Part 6:Testing and measurementtechniques: Section 6 conducted disturbances induced by radio-frequency fields;immunity test

IEC61000-4-29 : Electromagnetic compatibility: Part 29: Testing andmeasurement techniques and voltage variations on d.c. Input power portimmunity test

ETSI 301 489-1 V1.5.1 (2004): Electromagnetic compatibility and Radiospectrum Matters (ERM); ElectroMagnetic Compatibility (EMC) standard forradio equipment and services; Part 1: Common technical requirements

ETSI 301 489-8 V1.2.1 (2002): Electromagnetic compatibility and Radiospectrum Matters(ERM); ElectroMagnetic Compatibility(EMC) standard for radio

equipment and services; Part8:Specific conditions for GSM base stations

FCC 47CFR Part15 (2006): Federal Communication Committee - part 15radiofrequency device

A.2 Surge Protection Standards

The BTS complies with the following standards related to surge protection:


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IEC 62305-1(2006) Protection against lightning Part 1:General principles

IEC 61643-1(2002) Surge Protective devices connected to low-voltage powerdistribution systems

ITU-T K.11(1993) Principles of Protection Against Overvoltage and Overcurrents

ITU-T K.27(1996) Bonding Configurations and Earthing Inside a

Telecommunication Building ITU-T Recommendation K.56 (2003) Protection of radio base stations against

lightning discharges

ETS 300 253(1995) Equipment Engineering; Earthing and bonding oftelecommunication equipment in telecommunication centres

A.3 Safety Standards

The BTS complies with the following standards related to safety:

3G TR34.907 V3.0.0 Report on electrical safety requirements and regulations

IEC 60950-1 Safety of information technology equipment

EN 60950-1 Safety of information technology equipment IEC60215 Safety requirement for radio transmitting equipment

A.4 Environment Standards

A.4.1 Operating Environment Standards

The BTS complies with the following standards related to the operating environment:

EUROPEAN ETS 300 019-1-3 Class 3.1 Stationary use at weather protectedlocations.

EUROPEAN ETS 300 753: Equipment Engineering(EE) Acoustic noise emittedby telecommunications equipment 1997

EUROPEAN ETS 300 019-1-3-Amd

A.4.2 Transportation Standard

The BTS complies with the EUROPEAN ETS 300 019-1-2 Class 2.3 "PUBLICtransportation".

A.4.3 Storage Standard

The BTS complies with the EUROPEAN ETS 300 019-1-1 Class 1.2 "nottemperature-controlled storage".

A.5 Physical Protection StandardThe BTS complies with K.11 and K.20 recommended by the ITU-T.


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B GlossaryA

Abis interface An interface between the BSC and the BTS.

Antenna A device that converts the electromagnetic energy. It is used to radiate andcollect radio waves. In transmission, it converts the high-frequency current tothe electromagnetic wave; in reception, it converts the electromagnetic wave tothe high-frequency current.

B

Baseband Baseband is a form of modulation in which the information is applied directly tothe physical transmission medium.

BSS Base station system. The BSS system consists of the BSCs and the BTSs. TheBSS is controlled by the Mobile Switching Center (MSC) and communicateswith the MS in the radio coverage area.

BTS Base transceiver station. The mobile communications system consists of theMS, BSS, and NSS. The BSS consists of the BTS and the base stationcontroller (BSC).

C

CarrierA sine wave whose bandwidth is much higher than the signal bandwidth. Thecarrier is identified by amplitude, frequency, and phase.

D

Double-transceiver A mode in which a board provides two TRXs.

E


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EDGE Enhanced Data rates for GSM Evolution. A data-enhanced mobile technologybased on the GSM/GPRS network. It is also called the 2.75 generationtechnology. As a high-speed mobile data standard that remarkably improvesthe efficiency of the GPRS channel encoding, EDGE allows the data rate up to384 kbit/s; thus fully meeting the broadband requirements of radio multi-mediaapplications in the future.

F

Four-way receivediversity

A technology in which signals are received in four routes, which can gain moreuplink diversity gain than the main diversity.

G

GPRS General Packet Radio Service. A new mobile data service available to almostevery GSM system. It is a connectivity solution based on Internet Protocols thatsupports a wide range of end-to-end and WAN applications. GPRS is a

technology between the second (2G) and third (3G) generations of mobiletelephony.

GSM The Global System for Mobile Communications is originally developed as apan-European standard for digital mobile telephony. GSM has become theworld's most widely used mobile system. It covers GSM900, DCS1800, andPCS1900 with the data rate 9.6 kbit/s.

H

HandoverOne of the important technologies in the radio communications that hands overan ongoing call from one radio channel to another to maintain the trafficconnection. The handover can be implemented within a cell or in different cells.

R

Receive diversity

The most common type of diversity, where a mobile device uses two physicallyseparate antennas to combine signals from the two antennas to reduce theimpact of spatial variations in signal strength and thus increase the averagedata rate available - sometimes dramatically.

S

SDH Synchronous Digital Hierarchy. A communication transmission mechanism

defined by the ITU-T. It is derived from the Plesiochronous Digital Hierarchy(PDH).

T

TMA Tower Mounted Amplifier. A low noise amplifier installed on the antenna.

Transmit diversity A method to realize the multi-path which optimizes the downlink signals.


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TRXTransceiver. An entity that serves up to eight TCHFs in full-duplex mode. If thelow-speed FH is not used, a TRX serves one RF carrier.

U

Um interface Also called radio interface. A standard interface between the MS and the BSS.


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C Acronyms and AbbreviationsA

AMR Adaptive MultiRate

B

BSC Base Station Controller

C

CBUS Control BUS

D

DAFM Antenna Front-end Module for DDRM BTS

EBMB BTS3002E Module Backplane

DBUS Data BUS

DDCM Double Combining Module for DDRM BTS

DDPM Dual Duplexer Module for DDRM BTS

DDRM Double transceivers Digital and Radio frequency Module

DMCM Main Control Module for DDRM BTS

DPSM Power Supply Module for DDRM BTS

DSEM DC SPD and EMI Module

E

EDGE Enhanced Data rates for GSM Evolution

EFR Enhanced full rate speech codec

EGPRS Enhanced GPRS


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EMI External Machine Interface

F

FR Frame Relay

G

GMSK Gaussian Minimum Shift-frequency Keying

GPRS General Packet Radio Service

GSM Global System for Mobile communications

H

HR Half Rate

M

MMI man-machine interactive

O

OMC Operation and Maintenance Center

R

RF Radio Frequency

RH Relative Humidity

S

SDH Synchronous Digital Hierarchy

T

TCH Traffic Channel

TMA Tower Mounted Amplifier

GBSS8.0 BTS3900A Product Description V1.0_20080304

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