8403 GBSS8.0 BTS3900A Product Description

Product Description

HUAWEI BTS3900A V300R008

Issue 01

Date 2008-03-04

HUAWEI TECHNOLOGIES CO., LTD.


Product Description

文档版本 01 (2008-03-04) HUAWEI TECHNOLOGIES PROPRIETARY 第 2 共 49

Huawei Technologies Co., Ltd. provides customers with comprehensive technical support and service. Please feel free to contact our local office or company headquarters.

Huawei Technologies Co., Ltd.

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

Website: http://www.huawei.com

Email: [email protected]

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 written consent of Huawei Technologies Co., Ltd. Trademarks and Permissions

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

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

http://www.huawei.com

mailto:[email protected]


Product Description


About This Document

Author Prepared by Dong Yujiao Date 2008-03-01

Reviewed by Peng Jianhua, Feng Baoshun, Chen Ping, Xu Kai, Liu Jianyun, 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 to BTS3900A

This chapter provides an overview of the BTS3900A.

2 System Architecture

This chapter describes the structure, functional modules, and system 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 OM system.

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


Product Description


Chapter Content

7 Technical Specifications

This chapter lists the main performance and engineering specifications 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 and Abbreviations

The appendix lists the acronyms and abbreviations in this manual.


Product Description


Change History

Issue Description Issue Date Author Approved by

01 Initial commercial release

2008-03-04 Dong Yujiao Feng Baoshun


Product Description


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


Product Description


4.5 Flexible Networking.................................................................................................................... 30 4.6 Convenient OM.......................................................................................................................... 30 4.7 Various 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

7 Technical 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


Product Description


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

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


Product Description

文档版本 01 (2008-03-04) Huawei Technologies Proprietary 第 9 共 49

1 Introduction to BTS3900A

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

Table 1-1 Products in the 3900 GSM BTS family

BTS Type Model Max. Number of TRXs per Cabinet

Application Scenarios

Indoor macro BTS

BTS3900 12 l Densely populated areas with high traffic volume

l Areas that require wide coverage

l Areas where the construction cost of equipment room is high or the space resource is limited

Outdoor separated macro BTS

BTS3900A 12 l Urban/suburban/rural areas with high traffic volume and wide coverage

l Areas where site acquisition is difficult or the construction cost of equipment room is high


Product Description


BTS Type Model Max. Number of TRXs per Cabinet

Application Scenarios

Distributed base station

DBS3900 12 l Urban/suburban/rural areas with high traffic volume and wide coverage

l Areas where site acquisition is difficult

l Areas where the construction cost of equipment room is high or the space resource is limited

1.2 Appearance of the BTS3900A The BTS3900A cabinet contains the APM30 power cabinet and the RF cabinet. The optional equipment is the APM30 transmission cabinet and the APM30 battery cabinet.

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

Figure 1-1 shows the appearance of the BTS3900A.


Product Description


Figure 1-1 BTS3900A

1.3 Benefits of the BTS3900A The unified module designing is applied to the 3900 GSM BTS family. The outdoor macro BTS3900A allows multiple radio access technologies (RATs) in one cabinet. It is small in size and light in weight, and supports the smooth evolution to Long Term Evolution (LTE).

1.3.1 Efficient Site Usage and Fast Networking ü The BTS3900A features one of the most compact macro base stations in the

industry with the footprint of only 600 mm x 480 mm. ü The BTS3900A has a streamlined modular structure. The part assembly and

disassembly for the BTS3900A are easy and fast.

1.3.2 Cost-Effective Solutions for Capacity and Coverage ü The transmit power on top of the cabinet per TRX is up to 45 W (GSM900) and up

to 71 W (GSM900) in PBT mode. The DRFU uses the double-transceiver


Product Description


technology. The BTS3900A ensures wide coverage and high throughput, and helps minimize the number of sites.

ü The BTS3900A supports two-way receive diversity, four-way receive diversity, transmit diversity, and PBT. Therefore, the uplink and downlink coverage are enhanced.

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

1.3.3 Operation in an Environment-Friendly Way ü The BTS3900A introduces the innovative technology for power amplification and

power consumption management. The occupation on equipment room and related resources is minimized.

ü Compared with traditional macro BTSs, the power consumption of the integrated BTS3900A cabinet is reduced by 8%. Therefore, the cost on related devices, such as power, backup battery, air conditioning, and heat exchanger, is reduced accordingly.

1.3.4 Reliable OM with Minimized OPEX ü The BTS3900A can share the BBU, RFU, and power system with other BTSs of

the same BTS family. Thus, the cost on production, transportation, and OM is reduced.

ü The BTS3900 features streamlined structure design, separated installation of the BBU and DRFU, and the style of assembled modules. The transportation, configuration, and installation become easy. As a result, the difficulty and cost in network construction for the telecom operator are minimized.

ü The BTS3900A cabinet can be divided into the APM30 power cabinet and RF cabinet. The APM30 power cabinet weighs 65 kg and the RF cabinet weighs only 58 kg, which can be installed without the help of a crane.

ü All the modules of the BTS3900A can be managed in front of the cabinet, which reduces the maintenance expense.

1.3.5 Smooth Evolution to Future-Oriented Network ü The BTS3900A is designed on the basis of the unified platform for the Huawei

wireless products. BTSs for different networks such as GSM, WCDMA, CDMA, and WiMAX can share the same cabinet and the BBU. The BTS3900A enables the service upgrade and network evolution for the telecom operators around the globe.

ü The BTS3900A supports the Abis IP/FE interface in hardware and enables Abis over IP through software upgrade if required.

ü The BTS3900A supports the smooth evolution to the LTE.


Product Description


2 System Architecture

2.1 Structure of the Cabinet The dimensions of the BTS3900A cabinet (cabinet base involved) are as follows:

l Height: 1600 mm

l Width: 600 mm

l Depth: 480 mm

Figure 2-1 shows the BTS3900A in full configuration.


Product Description


Figure 2-1 BTS3900A in full configuration

Free

BBU

Power Subrack(AC/DC)

PDU

GATM6

7

9

8

10

2

3

5 DCDU-02 DCDU-02

FMUA

FAN FAN

DRFU

DRFU

DRFU

DRFU

DRFU

DRFU

4

1

DCDU-03A

Transmission Unit 12

13

11

Transmission Unit

Transmission Unit

Transmission Unit

14

15

BATTERY

BATTERY

BATTERY

BATTERY

BATTERY

BATTERY

BATTERY

BATTERY

(1) RF cabinet (2) Double radio filter unit

(3) FAN unit (4) Fan environment monitor

(5) Direct current distribution unit-02

(6) GSM antenna and TMA control module

(7) BBU3900 (8) PDU

(9) Power subrack (AC/DC)

(10) APM30 power cabinet

(11) Direct current distribution unit-03A

(12) Transmission unit

(13) APM30 transmission cabinet

(14) Battery (15) APM30 battery cabinet


Product Description


2.2 BTS3900A Modules 2.2.1 BBU3900

Figure 2-2 shows the BBU3900 panel.

Figure 2-2 BBU3900 panel

The BBU3900 mainly consists of the following modules:

ü BTS interface unit ü Central processing unit ü High-speed interface unit ü Clock unit ü Monitoring unit

In addition, the BBU3900 is installed with the FAN unit and power supply unit. Figure 2-3 shows the interaction between the modules of the BBU3900.


Product Description


Figure 2-3 Modules in the BBU3900

The functions of each module are described as follows.

BTS Interface Unit The BTS interface unit performs the following functions:

ü Connects the BTS to the BSC ü Exchanges timeslot data between the E1 links and the DBUS ü Synchronizes the lower-level clock with the upper-level clock

Central Processing Unit The central processing unit performs centralized management (OM and signaling processing) of the entire distributed base station system. It also provides the reference clock for the system. The central processing unit performs the following functions:

ü Supports the UART communication protocol ü Controls the BTS interface unit and communicates with the BSC and BTS ü Controls the high-speed interface unit and communicates with the DRFU ü Performs clock module functions such as providing and managing BTS clock

signals and supporting external synchronization clock input


Product Description


High-Speed Interface Unit Each BBU3900 provides six CPRI ports. The high-speed interface unit performs the following functions:

ü Receives uplink baseband data from the DRFU ü Transmits downlink baseband data to the DRFU

Clock Unit The clock unit performs the following functions:

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

ü 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 alarm information to the central processing unit.

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

Figure 2-4 shows the DRFU panel.


Product Description


Figure 2-4 DRFU panel

The DRFU consists of the following components:

ü High-speed interface module ü Signaling processing unit ü Power amplifier ü Dual-duplexer

Figure 2-5 shows the components of the DRFU.


Product Description


Figure 2-5 Components 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:

ü Transfers the data from the BBU to the signal processing unit ü 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 TX channels. Each channel supports two carriers.

The uplink RX channels perform the following functions:

ü Down-converts the RF signals to IF signals ü Amplifies the IF signals and performs IQ demodulation ü Performs analog-to-digital conversion through the ADC ü Samples digital signals ü Performs matched filtering ü Supports digital automatic gain control (DAGC) ü Encapsulates data

The downlink TX channels perform the following functions:

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

ü Shapes and filters downlink signals ü Performs digital-to-analog conversion through the DAC and performs IQ

modulation ü Up-converts the IF signals to the transmit band


Product Description


Power Amplifier The power amplifier amplifies the low-power RF signals from the signal processing unit.

Dual-Duplexer The dual-duplexer performs the following functions:

ü Multiplexes RX signals and TX signals so that they can share the same antenna channel

ü Filters RX signals and TX signals

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

Figure 2-6 GATM panel

The GATM performs the following functions:

ü Controls the RET antenna


Product Description


ü Feeds power to the TMA ü Reports the RET control alarm signals ü Monitors the current from the feeder

2.2.4 DCDU-02 The DCDU-02 (direct current distribution unit) provides four –48 V DC outputs.0 shows the DCDU-02 panel.

Figure 2-7 DCDU-02 panel

The DCDU-02 performs the following functions:

ü Leads the –48 V DC into the cabinet ü Distributes four –48 V DC outputs to boards and modules in the cabinet ü Provides surge protection of 10 kA in differential mode and 15 kA in common

mode and provides dry contact alarms related to surge protection failures


Product Description


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

Figure 2-8 shows the FMUA panel.

Figure 2-8 FMUA panel

The FMUA performs the following functions:

ü Leads –48 V DC into the cabinet and supplies –48 V DC power input for the FAN unit.

ü Collects environment alarm information in the cabinet. The environment alarms are related to humidity, smoke, water immersion, and door status.

ü Collects surge protection alarm information of the DC power distribution unit. ü Monitors the operating status of fans. The fan speed can be adjusted based on

the temperature or adjusted by the central processing unit. ü Controls the fan rotation. The fan stops working when the ambient temperature is

low. ü Supports the detection and reporting of the temperature.


Product Description


ü Supports the cascading and extension of RS485 ports. FMUAs can be cascaded.

2.2.6 FAN Unit The FAN unit performs heat dissipation for the cabinet and reports the temperature and rotation speed of the fans to the FMUA.

2.2.7 BTS3900A Sensors The BTS3900A sensors consist of the door status sensor, humidity and temperature sensor, smoke sensor, temperature sensor for the internal batteries, and MCB sensor of the batteries. The sensors are used to monitor the environment and report the alarm.

2.2.8 APM30 Power Cabinet The APM30 power cabinet houses the power subrack (AC/DC), PDU, and BBU3900. The GATM can be installed in the APM30 power cabinet when the GATM is configured.

2.2.9 RF Cabinet The RF cabinet houses the FMUA, DCDU-02, FAN unit, and DRFU.

2.2.10 APM30 Transmission Cabinet The APM30 transmission cabinet houses the DCDU-03A and provides a space of 11 U for transmission devices.

2.2.11 APM30 Battery Cabinet The APM30 battery cabinet houses batteries and is used as power backup for the BTS3900A cabinet.

2.3 Recommended Configuration The BTS3900A cabinet in full configuration provides 12 TRXs. It supports the cell configuration of S2/2/2 and S4/4/4. It also allows the dual-band application. Table 2-1 lists the recommended configuration of the BTS3900A.

Table 2-1 Recommended configuration of the BTS3900A

Recommended Configuration

Hardware Configuration Description

S1/1/1 l Cabinet: 1 PCS l The star topology is


Product Description




S2/2/2 l BBU3900: 1 PCS l DRFU: 3 PCS l Power subrack

(AC/DC): 1 PCS l DCDU-02: 1 PCS l FAN: 1 PCS l GATM: optional

S4/4/4 l Cabinet: 1 PCS l BBU3900: 1 PCS l DRFU: 6 PCS l Power subrack

(AC/DC): 1 PCS l DCDU-02: 2 PCS l FAN: 2 PCS l GATM: optional

recommended between the BBU and the DRFUs.

l A maximum of one GATM is allowed.

S6/6/6

S2/2/2+S2/2/2

l APM30 power cabinet: 1 PCS

l RF cabinet: 2 PCS l BBU3900: 1 PCS l DRFU: 9 PCS l Power subrack

(AC/DC): 1 PCS l FAN: 3 PCS l DCDU-02: 3 PCS l GATM: optional

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



l The ring topology is recommended between the BBU and the DRFUs.

l A maximum of two GATMs are allowed.


Product Description




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



l The star-and-ring hybrid topology is recommended between the BBU and the DRFUs.

l A maximum of two GATMs are allowed.


Product Description


3 Ports

3.1 Power Port Table 3-1 lists the power port of the BTS3900A.

Table 3-1 Power port of the BTS3900A

Port Location Description

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

220 V AC input

3.2 Transmission Ports Table 3-2 lists the transmission ports of the BTS3900A.

Table 3-2 Transmission ports of the BTS3900A

Port Connector Type Description

INSIDE DB25 male Transfers four E1s/T1s between the UELP and the GTMU

OUTSIDE DB26 male Provides the input and output of four E1s/T1s between the BBU and the BSC

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

E1/T1 DB26 male Provides the input and output of four E1s/T1s between the GTMU and the UELP or between the GTMU and the BSC

FE0 RJ45 Reserved port. Connects the BBU to a routing device in the equipment room through the Ethernet cable to transmit network information.


Product Description


Port Connector Type Description

FE1 DLC Reserved port. Connects the BBU to a routing device in the equipment 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 configured in the BBU3900.

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

ü 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 3-3 Alarm ports of the BTS3900A

Port Connector Type

Description

MON0 RJ45 Provides the input and output of the externally collected environment monitoring signals in the format of the RS485 frame to the GTMU

MON1 RJ45 Reserved

EXT-ALM0 RJ45 Transmits the externally collected environment monitoring signals in the format of the dry contact signals to the GTMU

EXT-ALM1 RJ45 Reserved

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

Table 3-4 Other external ports of the BTS3900A

Port Connector Type

Description

ETH RJ45 For local maintenance and commissioning

USB USB Reserved. Connected to a USB disk for automatic software upgrade


Product Description


Port Connector Type

Description

TST USB Connected to a tester for testing the output clock signals


Product Description


4 Product Features

4.1 High Capacity ü The BTS3900A cabinet in full configuration houses six DRFUs. ü The BTS3900A cabinet supports up to 12 TRXs in the maximum cell

configuration of S4/4/4. ü The BTS3900A cabinet supports up to six sectors. ü A site configured with the BTS3900As supports up to 72 GSM TRXs in the

maximum cell configuration of S24/24/24.

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

temperature). ü The BTS3900A supports two-way and four-way receive diversity to improve the

uplink coverage. ü The BTS3900A supports transmit diversity and PBT to improve the downlink

coverage. ü The BTS3900A supports omni-directional and directional coverage modes. ü The TMA can be configured on the BTS3900A to improve the receive sensitivity. ü The BTS3900A supports baseband FH, RF FH, antenna hopping, and dynamic

MAIO to suppress the network interference and therefore to expand the network capacity.

4.3 Multi-Band Application The BTS3900A supports GSM900 and DCS1800 catering to requirements of the telecom operators in different regions.

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


Product Description


ü Two cabinets can be installed in stack mode with a footprint of only 600 mm x 480 mm. The battery cabinets can also be stacked to reduce the area of the equipment room.

ü The cables connected to all the ports on the modules and boards can be routed from the front panel and maintenance can be performed in front of the cabinet.

ü The subracks, modules, and boards are the same in depth and height. ü The power distribution component (with surge protection and filtering) has a

modular structure and can be shared by different cabinets. The modular design facilitates future capacity expansion and replacement.

4.5 Flexible Networking ü Supports the hybrid networking with the BTS3X, BTS3012AE, and DBS3900. ü Supports various network topologies such as star, chain, tree, ring, and hybrid

topologies.

4.6 Convenient OM ü The BTS3900A supports three O&M modes: Site Maintenance Terminal mode,

LMT mode, and centralized network management mode. ü The BTS3900A supports multiple maintenance interfaces such as MMI, BIN, Web

UI, SNMP, and CLI. ü The BTS3900A supports Intranet maintenance. Once granted the authority, the

user can maintain any BTS within the system through a network element (NE). ü The local maintenance equipment can be used to maintain the BTS through the

Ethernet port. ü Once granted the authority, the user can install the client software to maintain the

NEs within the entire network in a remote and centralized way. ü The BTS3900A can establish a default OM path with the upper-level equipment

after hardware installation and before data configuration. Thus, the user can remotely load programs and data to the BTS.

ü The boards and modules support the plug-and-play function.

4.7 Various Transmission Modes ü Supports the E1/T1 transmission and reserves the FE port ü Supports microwave, satellite, and optical transmission ü Allows 3 U space for the built-in transmission equipment ü Supports the IP transmission in hardware and TDM transmission


Product Description


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

suppress network interference, and to expand network capacity ü Supports remote batch operations, batch software upgrades, and batch

adjustment on the tilt of the RET antenna ü Supports the automatic scanning of the RET antenna ü Supports Antenna Interface Standard Group 2.0 (AISG2.0) and AISG1.1 ü Supports the cascaded RET antennas

4.9 Optimized SASU and SASA The same band antenna sharing unit (SASU) and the same band antenna sharing adapter (SASA) are adopted to provide low insertion loss and to reduce the cost of network deployment.

The SASU is an important component for the solution of co-antenna on the same band. It enables two networks at the same band to share the existing antenna. The SASU is applied to two scenarios: co-antenna between a 2G cell and a 3G cell, and co-antenna between two 3G cells. In addition, the cost and time of the 3G network construction 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 insertion loss of 0.8 dB is introduced on the downlink. Thus, the two TX carriers are combined on one antenna without deteriorating the network performance.

4.10 High Environment Adaptability Table 4-1 lists the environment adaptability standards of the BTS3900A.

Table 4-1 Environment adaptability standards of the BTS3900A

Environment Adaptability Description

Waterproofing and dustproofing l The DRFU meets IP54 (International Protection).

l The PCB meets IP20.

Chemical environment adaptability l 3/4C2, general pollution, the industrial active material is distributed in the entire area or the cities/suburbs with busy traffic

l 3/4C3, close to areas with industrial production with chemical pollution

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


Product Description


Environment Adaptability Description

Biological environment adaptability 4B2 Adaptable to the areas where there are mildew and rodents such as rats.

Anti-seismic l ETS 300 019-1-3 l Special components are added to the

standard cabinet to meet GR-63-CORE Zone 4 in North America.

Operation temperature –40℃ to +55℃

Power supply –48 V DC, +24 V DC, and 220 V AC input

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

Auxiliary equipment AFB, APM, SPD40R, and Uninterruptible Power Supply (UPS) to provide a solution regarding BTS3900A power distribution, surge protection, transmission cabling, transmission equipment installation, and power backup.

4.11 Smooth Expansion and Evolution ü Capacity expansion

The BTS3900A cabinet in full configuration supports 6 DRFUs and 12 TRXs in the maximum cell configuration of S4/4/4. A site configured with the BTS3900As supports up to 72 GSM TRXs in the maximum cell configuration of S24/24/24.

ü Upgrade The BTS3900A supports coexistence with the double-transceiver BTS3012AE and the outdoor mini BTS3006C/BTS3002E. The BTS3900A is developed on the basis of the unified platform for Huawei wireless 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 to meet the different networking requirements.

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


Product Description


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

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

ü The BTS3900A can operate for a minimum of 90 days with the internal clock working in free-run mode.


Product Description


5 OM System

5.1 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 OM mechanism independent of the hardware to meet various requirements of the customer in operating and maintaining the equipment, and provides powerful OM functions. Figure 5-1 shows the topology of the OM system.

Figure 5-1 Topology of the OM system

Site Maintenance Terminal

BSC

VLAN

iManager M2000

LMT

BTS

BTSSite Maintenance Terminal

OM system

M2000: network management center LMT: local maintenance terminal

BTS: GSM base transceiver station BSC: base station controller


Product Description


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

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

ü LMT mode: The LMT is used to maintain the BTS through the OM links on the Abis interface, which is an interface between the BSC and the BTS. The LMT communicates with the BSC through a LAN. You can use the LMT to operate and maintain the site, cell, RC, channel, and board. This mode is used to configure and modify the data of the BSC and BTS.

ü Centralized network management mode: The Huawei iManager M2000 is used to maintain the BTS through the OM network. The M2000 can operate and maintain the 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 of the hardware. The OM functions consist of equipment management, software management, configuration management, service management, performance management, 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/environment monitoring/RET). You can also perform data configuration and status management for some devices.

5.2.2 Software Management ü Provides various functions, such as downloading and activating the BTS software,

upgrading patches, and loading and downloading files. The associated tasks involve consistency check on the software and hardware releases, release management, and software upgrade.

ü Allows upgrade of the BTS software through the USB port on the BBU without a PC.

5.2.3 Configuration Management ü Performs consistency check on the added, deleted, or modified BTS data ü Supports dynamic and static data configuration modes. In dynamic data

configuration mode, the modified data takes effect immediately. In static data configuration mode, the modified data takes effect only after the BTS is restarted.

ü Supports automatic data backup


Product Description


5.2.4 Service Management ü Supports parameter configuration and alarm querying for the baseband boards,

RET antenna, and environment monitoring device. ü Supports various OM functions for the RET antenna, such as automatic scanning,

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

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

5.2.5 Performance Management ü Monitors the performance of the internal and external telecommunications

networks and generates alarms when the performance deteriorates ü Monitors the operating status of the BTS such as monitoring the traffic volume on

the ports and measuring the technical data of the BTS ü Monitors the usage of key components, such as the CPU and DSP in the board

5.2.6 Security Management The OM system provides security management functions, such as connection management, user authentication, encryption, and forward resolution between the BTS software and the OMC.

5.2.7 Alarm Management ü Supports query of real-time alarms and history alarms ü Collects internal and external alarms, such as the environment monitoring device

inputs and Boolean inputs ü Processes alarm correlation to ensure precision and accuracy in locating alarms ü Provides functions of saving, interpreting, prompting, shielding, filtering,

confirming, clearing, post processing, and reporting of alarms ü Detects and reports alarms, and processes alarm correlation in the system

5.2.8 Environment Monitoring ü BTSs are usually unmanned and dispersedly distributed. The equipment working

in the adverse environment may incur fire or flood. To ensure the normal operation of the BTS equipment and to help you handle emergencies, the BTS provides a complete environment monitoring system.

ü The environment monitoring system provides customized solutions regarding door control, infrared, smoke, water damage, humidity, and temperature monitoring.


Product Description


6 Reliability

6.1 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 the system reliability improvement.

ü Redundancy configuration The transmission unit, power supply unit, and FAN unit in the system support redundancy configuration, and the BBU supports load sharing. The BBU and DRFUs form a ring. When a DRFU in the ring fails, anticlockwise switchover is performed; thus greatly improving the system reliability. Crucial system data, such as software releases and data configuration files, are backed up to ensure the normal system operation in case of data corruption.

ü Reliability The BTS3900A system automatically detects and diagnoses the faults in the software and hardware, and reports the alarms. In addition, the BTS3900A can monitor the environment and report environment alarms.

6.2 Hardware Reliability ü Overcurrent protection

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

ü Overtemperature protection The BBU and DRFU are protected against high temperature. When the internal temperature is high, the system automatically performs power derating or switches off the power amplifier based on the current temperature. When the temperature restores normal, the system increases the power level or switches on the power amplifier.

ü Monitoring mechanism The BBU can monitor the environment and reports alarms.

ü Reliable power supply − Provides a wide range of voltages and surge protection


Product Description


− Protects the programs and data of the system in case of power failure − Protects the board against overvoltage, overcurrent, and reverse connection

of positive and negative poles ü 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 of the cabinet (E1 port and Boolean port), antenna port, and GPS port.

6.3 Software Reliability Software reliability is guaranteed through data redundancy and powerful error tolerance.

6.3.1 Data Redundancy Crucial system data, such as software releases and configuration files, are backed up to ensure the normal system operation in case of data corruption.

ü Redundancy of software releases The system backs up the software releases, including the BOOTROM, in different partitions. When a software release is faulty, the backup release can be used instead.

ü Redundancy of data configuration files The system backs up the data configuration files in different partitions. When the running data configuration files are corrupted, the backup data configuration files can be used instead.

ü Redundancy of the operation logs The system records the user operations in a certain period and backs up the information in the operating logs. When the system incurs an unknown error, the maintenance personnel can locate the problem by tracing back to the normal status, 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 is described as follows:

ü Scheduled detection on the key resources Usage check is performed on the software in the system to release the suspended software resources and generate logs and alarms.

ü Task monitoring During the software running, the monitoring process monitors all the tasks. When an error occurs in the software or the hardware is faulty, the monitoring process reports alarms and attempts to restore the normal running of the software.

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


Product Description


ü Watchdog When the software is running abnormally, the system detects the error through software watchdog and hardware watchdog, and automatically performs the reset.

7 Technical Specifications

7.1 RF Specifications

Table 7-1 RF specifications of the BTS3900A

Item Specifications

Operating Band RX Band TX Band

P-GSM900 890 MHz to 915 MHz

935 MHz to 960 MHz

E-GSM900 880 MHz to 915 MHz

925 MHz to 960 MHz

Frequency band

DCS1800 1710 MHz to 1785 MHz

1805 MHz to 1880 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

Channel Type Static Sensitivity RX specifications

TCH/FS –113 dBm


Product Description


7.2 Mechanical Specifications Table 7-2 Mechanical specifications of the BTS3900A

Item Specifications

Dimensions (W mm x D mm x H mm) l APM30 power cabinet: 600 × 480 × 700 l RF cabinet: 600 × 480 × 700 l Cabinet base: 600 × 480 × 200

Weight (kg) l RF cabinet (empty cabinet): 58 l RF cabinet (full configuration): 130 l APM30 power cabinet: 65 l 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 7-3 Power specifications of the BTS3900A

Item Specifications

Power input l –48 V DC (–38.4 V DC to –57 V DC) l +24 V DC (+19 V DC to +29 V DC) l 220 V AC (176 V AC to 280 V AC)

Power consumption

l 900 MHz TOC Typical value: 1250 W Maximum value: 2180 W

l 1800 MHz TOC Typical value: 1400 W Maximum value: 2480 W

Battery l Associated equipment: APM30 battery cabinet l Capacity: 48V/50Ah, 100Ah, or 200Ah l Maximum duration in S4/4/4: 6 hours

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


Product Description


7.4 Surge Protection Specifications

Table 7-4 Surge protection specifications of the BTS3900A

Port Surge Protection Mode

Surge Current

Differential mode

3kA(8/20us) Signal port

Common mode

5kA(8/20us)

Differential mode

3kA(8/20us) Transmission port

Common mode

5kA(8/20us)

Differential mode

3kA(8/20us) E1 port

Common mode

5kA(8/20us)

Differential mode

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

Common mode

60kA(8/20us)

Differential mode

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

Common mode

15kA(8/20us)


Product Description


7.5 Environment Specifications Table 7-5 Environment specifications of the BTS3900A

Item Specifications

Operating environment

l Operating temperature: -40℃ to +50℃ (without canopy) -40℃ to +55℃ (with canopy)

l Relative humidity: 5% to 100% l Solar radiation: 700 W/m2 (environment temperature:

45℃) l Altitude: –60 m to 3000 m (The BTS operates normally.) 3000 m to 4000 m (The operating temperature of the BTS drops by 1 each time the altitude increases ℃by 200 m.) l Mechanical stress: IEC, ETS, and GR-63 l Other specifications meet the requirements in ETS 300

019-1-3 Class 3.1.

Transportation environment

l Transportation temperature: –40 to +70℃ ℃ l Relative humidity: 10% to 100% (without wind) l Climatic condition: 2K4, including 2K3 and package

transportation on 3rd-level roads in high altitude areas without environment protection

l Mechanical stress: ü Meeting the falling requirements in the ISTA and

QDKBA1109-2005 ü Meeting the falling requirements in the GR-63 ü Meeting the requirements for vibration in

transportation in the GR-63 l Other specifications meet the requirements in the ETS

300 019-1-2 Class 2.3.

Storage environment l Storage environment: -40℃ to +70℃ l Relative humidity: 10% to 100% (without wind) l Other specifications meet the requirements in the ETS

300 019-1-1 Class 1.2.

Noise l The cabinet is installed with built-in fans. l The noise of a single cabinet is smaller than 6.9 bels. l ETS 300 753 4.1E rural level (sound power: 61 dBA/25 ℃

and 67 dBA/45 )℃


Product Description


A Technical Standards

A.1 Electromagnetic Compatibility Standards The BTS complies with the following standards related to electromagnetic compatibility:

ü CISPR 22(2003): limits and methods of measurement of radio disturbance characteristics of information"

ü EN55022(2006) : limits and methods of measurement of radio disturbance characteristics of information

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

ü IEC61000-4-2: Electromagnetic compatibility(EMC) Part 2:Testing and measurement techniques Section 2:Electrostatic discharge immunity test Basic EMC Publication

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

ü IEC61000-4-4: Electromagnetic compatibility(EMC) Part 4:Testing and measurement techniques Section 4:Electrical fast transient/burst immunity test Basic EMC publication

ü IEC61000-4-5: Electromagnetic compatibility(EMC) Part 5:Testing and measurement techniques Section 5:Sruge immunity test

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

ü IEC61000-4-29 : Electromagnetic compatibility: Part 29: Testing and measurement techniques and voltage variations on d.c. Input power port immunity test

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

ü ETSI 301 489-8 V1.2.1 (2002): Electromagnetic compatibility and Radio spectrum Matters(ERM); ElectroMagnetic Compatibility(EMC) standard for radio equipment and services; Part8:Specific conditions for GSM base stations

ü FCC 47CFR Part15 (2006): Federal Communication Committee - part 15—radio frequency device

A.2 Surge Protection Standards The BTS complies with the following standards related to surge protection:


Product Description


ü IEC 62305-1(2006) Protection against lightning –Part 1:General principles ü IEC 61643-1(2002) Surge Protective devices connected to low-voltage power

distribution systems ü ITU-T K.11(1993) Principles of Protection Against Overvoltage and Overcurrents ü ITU-T K.27(1996) Bonding Configurations and Earthing Inside a

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

lightning discharges ü ETS 300 253(1995) Equipment Engineering; Earthing and bonding of

telecommunication equipment in telecommunication centres

A.3 Safety Standards The BTS complies with the following standards related to safety:

ü 3G TR34.907 V3.0.0 Report on electrical safety requirements and regulations ü IEC 60950-1 Safety of information technology equipment ü EN 60950-1 Safety of information technology equipment ü 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:

ü EUROPEAN ETS 300 019-1-3 Class 3.1 “Stationary use at weather protected locations”.

ü EUROPEAN ETS 300 753: Equipment Engineering(EE) Acoustic noise emitted by telecommunications equipment 1997

ü 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 "PUBLIC transportation".

A.4.3 Storage Standard The BTS complies with the EUROPEAN ETS 300 019-1-1 Class 1.2 "not temperature-controlled storage".

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


Product Description


B Glossary

A

Abis interface An interface between the BSC and the BTS.

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

B

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

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

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

C

Carrier A sine wave whose bandwidth is much higher than the signal bandwidth. The carrier is identified by amplitude, frequency, and phase.

D

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

E


Product Description


EDGE Enhanced Data rates for GSM Evolution. A data-enhanced mobile technology based on the GSM/GPRS network. It is also called the 2.75 generation technology. As a high-speed mobile data standard that remarkably improves the efficiency of the GPRS channel encoding, EDGE allows the data rate up to 384 kbit/s; thus fully meeting the broadband requirements of radio multi-media applications in the future.

F

Four-way receive diversity

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

G

GPRS General Packet Radio Service. A new mobile data service available to almost every GSM system. It is a connectivity solution based on Internet Protocols that supports a wide range of end-to-end and WAN applications. GPRS is a technology between the second (2G) and third (3G) generations of mobile telephony.

GSM The Global System for Mobile Communications is originally developed as a pan-European standard for digital mobile telephony. GSM has become the world's most widely used mobile system. It covers GSM900, DCS1800, and PCS1900 with the data rate 9.6 kbit/s.

H

Handover One of the important technologies in the radio communications that hands over an ongoing call from one radio channel to another to maintain the traffic connection. 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 physically separate antennas to combine signals from the two antennas to reduce the impact of spatial variations in signal strength and thus increase the average data 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.


Product Description


TRX Transceiver. An entity that serves up to eight TCHFs in full-duplex mode. If the low-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.


Product Description


C Acronyms and Abbreviations

A

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


Product Description


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

8403 GBSS8.0 BTS3900A Product Description

Documents