V300R008

Product Description

HUAWEI BTS3900AV300R008

Issue01

Date2008-03-04

DOCPROPERTY Confidential

HUAWEI TECHNOLOGIES CO., LTD.

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 BaseBantian, LonggangShenzhen 518129People's Republic of China

Website:http://www.huawei.com

Email:support@huawei.com

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.NoticeThe 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.

Contents91 Introduction to BTS3900A

91.1 Overview

101.2 Appearance of the BTS3900A

111.3 Benefits of the BTS3900A

111.3.1 Efficient Site Usage and Fast Networking

111.3.2 Cost-Effective Solutions for Capacity and Coverage

121.3.3 Operation in an Environment-Friendly Way

121.3.4 Reliable OM with Minimized OPEX

121.3.5 Smooth Evolution to Future-Oriented Network

132 System Architecture

132.1 Structure of the Cabinet

152.2 BTS3900A Modules

152.2.1 BBU3900

172.2.2 DRFU

202.2.3 GATM

212.2.4 DCDU-02

222.2.5 FMUA

232.2.6 FAN Unit

232.2.7 BTS3900A Sensors

232.2.8 APM30 Power Cabinet

232.2.9 RF Cabinet

232.2.10 APM30 Transmission Cabinet

232.2.11 APM30 Battery Cabinet

232.3 Recommended Configuration

263 Ports

263.1 Power Port

263.2 Transmission Ports

273.3 Alarm Ports

273.4 Other Ports

294 Product Features

294.1 High Capacity

294.2 Wide Coverage

294.3 Multi-Band Application

294.4 Easy Installation

304.5 Flexible Networking

304.6 Convenient OM

304.7 Various Transmission Modes

314.8 Enhanced Antenna System

314.9 Optimized SASU and SASA

314.10 High Environment Adaptability

324.11 Smooth Expansion and Evolution

324.12 Flexible Clock and Synchronization

345 OM System

345.1 OM System

355.2 OM Functions

355.2.1 Equipment Management

355.2.2 Software Management

355.2.3 Configuration Management

365.2.4 Service Management

365.2.5 Performance Management

365.2.6 Security Management

365.2.7 Alarm Management

365.2.8 Environment Monitoring

376 Reliability

376.1 System Reliability

376.2 Hardware Reliability

386.3 Software Reliability

386.3.1 Data Redundancy

386.3.2 Error Tolerance

397 Technical Specifications

397.1 RF Specifications

407.2 Mechanical Specifications

407.3 Power Specifications

417.4 Surge Protection Specifications

427.5 Environment Specifications

43A Technical Standards

43A.1 Electromagnetic Compatibility Standards

43A.2 Surge Protection Standards

44A.3 Safety Standards

44A.4 Environment Standards

44A.4.1 Operating Environment Standards

44A.4.2 Transportation Standard

44A.4.3 Storage Standard

44A.5 Physical Protection Standard

45B Glossary

48C Acronyms and Abbreviations

1 Introduction to BTS3900A1.1 OverviewThe 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 familyBTS TypeModelMax. Number of TRXs per CabinetApplication Scenarios

Indoor macro BTSBTS390012 Densely populated areas with high traffic volume Areas that require wide coverage Areas where the construction cost of equipment room is high or the space resource is limited

Outdoor separated macro BTSBTS3900A12 Urban/suburban/rural areas with high traffic volume and wide coverage Areas where site acquisition is difficult or the construction cost of equipment room is high

Distributed base stationDBS390012 Urban/suburban/rural areas with high traffic volume and wide coverage Areas where site acquisition is difficult Areas where the construction cost of equipment room is high or the space resource is limited

1.2 Appearance of the BTS3900AThe 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.Figure 1-2 BTS3900A

1.3 Benefits of the BTS3900AThe 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 The BTS3900A features one of the most compact macro base stations in the industry with the footprint of only 600 mm x 480 mm. 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 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 technology. The BTS3900A ensures wide coverage and high throughput, and helps minimize the number of sites.

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

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

1.3.3 Operation in an Environment-Friendly Way The BTS3900A introduces the innovative technology for power amplification and power consumption management. The occupation on equipment room and related resources is minimized.

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 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.

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.

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.

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 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.

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

The BTS3900A supports the smooth evolution to the LTE.

2 System Architecture2.1 Structure of the CabinetThe dimensions of the BTS3900A cabinet (cabinet base involved) are as follows:

Height: 1600 mm Width: 600 mm Depth: 480 mmFigure 2-1 shows the BTS3900A in full configuration.Figure 2-3 BTS3900A in full configuration

(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

2.2 BTS3900A Modules2.2.1 BBU3900Figure 2-2 shows the BBU3900 panel.Figure 2-4 BBU3900 panel

The BBU3900 mainly consists of the following modules: BTS interface unit Central processing unit High-speed interface unit Clock unit Monitoring unitIn 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.Figure 2-5 Modules in the BBU3900

The functions of each module are described as follows.BTS Interface UnitThe 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 clockCentral Processing UnitThe 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: 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 clock signals and supporting external synchronization clock inputHigh-Speed Interface UnitEach BBU3900 provides six CPRI ports. The high-speed interface unit performs the following functions: Receives uplink baseband data from the DRFU

Transmits downlink baseband data to the DRFUClock UnitThe clock unit performs the following functions: Provides high-precision clock source for the BTS and provides system clock based on this clock source

Checks the PPL state, provides software phase lock, provides DA adjustment, and generates frame numbersMonitoring UnitThe 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.Figure 2-6 DRFU panel

The DRFU consists of the following components: High-speed interface module

Signaling processing unit

Power amplifier

Dual-duplexerFigure 2-5 shows the components of the DRFU.Figure 2-7 Components of the DRFU

The functions of each module are described as follows.

High-Speed Interface ModuleThe 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 BBUSignaling Processing UnitThe 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:

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 BBU and sends them to associated units

Shapes and filters downlink signals

Performs digital-to-analog conversion through the DAC and performs IQ modulation Up-converts the IF signals to the transmit band

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:

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

Filters RX signals and TX signals2.2.3 GATMThe 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 2-8 GATM panel

The GATM performs the following functions:

Controls the RET antenna

Feeds power to the TMA

Reports the RET control alarm signals

Monitors the current from the feeder

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

Figure 2-9 DCDU-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 common mode and provides dry contact alarms related to surge protection failures

2.2.5 FMUAThe FMUA supplies power to the FAN unit and monitors the environment in the cabinet.Figure 2-8 shows the FMUA panel.

Figure 2-10 FMUA panel

The FMUA performs the following functions:

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

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 on the temperature or adjusted by the central processing unit.

Controls the fan rotation. The fan stops working when the ambient temperature is low.

Supports the detection and reporting of the temperature.

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

2.2.6 FAN UnitThe 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 SensorsThe 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 CabinetThe 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 CabinetThe RF cabinet houses the FMUA, DCDU-02, FAN unit, and DRFU.

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

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

2.3 Recommended ConfigurationThe 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 2-2 Recommended configuration of the BTS3900A

Recommended ConfigurationHardware ConfigurationDescription

S1/1/1 Cabinet: 1 PCS BBU3900: 1 PCS DRFU: 3 PCS Power subrack (AC/DC): 1 PCS DCDU-02: 1 PCS FAN: 1 PCS GATM: optional The star topology is recommended between the BBU and the DRFUs. A maximum of one GATM is allowed.

S2/2/2

S4/4/4 Cabinet: 1 PCS BBU3900: 1 PCS DRFU: 6 PCS Power subrack (AC/DC): 1 PCS DCDU-02: 2 PCS FAN: 2 PCS GATM: optional

S6/6/6 APM30 power cabinet: 1 PCS RF cabinet: 2 PCS BBU3900: 1 PCS DRFU: 9 PCS Power subrack (AC/DC): 1 PCS FAN: 3 PCS DCDU-02: 3 PCS GATM: optional The ring topology is recommended between the BBU and the DRFUs. A maximum of two GATMs are allowed.

S2/2/2+S2/2/2

S1/1/1+S3/3/3 APM30 power cabinet: 1 PCS RF cabinet: 2 PCS BBU3900: 1 PCS DRFU: 8 PCS Power subrack (AC/DC): 1 PCS FAN: 3 PCS DCDU-02: 3 PCS GATM: optional

S4/4/4+S4/4/4 APM30 power cabinet: 1 PCS RF cabinet: 2 PCS BBU3900: 1 PCS DRFU: 8 PCS Power subrack (AC/DC): 1 PCS FAN: 3 PCS DCDU-02: 3 PCS GATM: optional The star-and-ring hybrid topology is recommended between the BBU and the DRFUs. A maximum of two GATMs are allowed.

3 Ports

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

Table 3-3 Power port of the BTS3900APortLocationDescription

L and N terminalsWiring unit of the power subrack (220 V AC)220 V AC input

3.2 Transmission PortsTable 3-2 lists the transmission ports of the BTS3900A.Table 3-4 Transmission ports of the BTS3900APortConnector TypeDescription

INSIDEDB25 maleTransfers four E1s/T1s between the UELP and the GTMU

OUTSIDEDB26 maleProvides the input and output of four E1s/T1s between the BBU and the BSC

CPRISFPProvides the input and output of CPRI signals between the BBU and the DRFU

E1/T1DB26 maleProvides the input and output of four E1s/T1s between the GTMU and the UELP or between the GTMU and the BSC

FE0RJ45Reserved port.

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

FE1DLCReserved port.

Connects the BBU to a routing device in the equipment room through the optical cable to transmit network information.

3.3 Alarm PortsIn the BTS3900A system, the alarms ports vary with the optional modules configured in the BBU3900.

When the BBU3900 is configured with one UPEU, 2 RS485 buses and 16 dry contact 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 3-5 Alarm ports of the BTS3900APortConnector TypeDescription

MON0RJ45Provides the input and output of the externally collected environment monitoring signals in the format of the RS485 frame to the GTMU

MON1RJ45Reserved

EXT-ALM0RJ45Transmits the externally collected environment monitoring signals in the format of the dry contact signals to the GTMU

EXT-ALM1RJ45Reserved

3.4 Other PortsTable 3-4 lists other external ports of the BTS3900A.Table 3-6 Other external ports of the BTS3900APortConnector TypeDescription

ETHRJ45For local maintenance and commissioning

USBUSBReserved.

Connected to a USB disk for automatic software upgrade

TSTUSBConnected to a tester for testing the output clock signals

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 cell configuration 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 the maximum 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 the uplink 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 dynamic MAIO to suppress the network interference and therefore to expand the network capacity.

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

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

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.

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.

The subracks, modules, and boards are the same in depth and height.

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 Supports the hybrid networking with the BTS3X, BTS3012AE, and DBS3900.

Supports various network topologies such as star, chain, tree, ring, and hybrid topologies.

4.6 Convenient OM The BTS3900A supports three O&M modes: Site Maintenance Terminal mode, LMT mode, and centralized network management mode.

The BTS3900A supports multiple maintenance interfaces such as MMI, BIN, Web UI, SNMP, and CLI.

The BTS3900A supports Intranet maintenance. Once granted the authority, the user can maintain any BTS within the system through a network element (NE).

The local maintenance equipment can be used to maintain the BTS through the Ethernet port.

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.

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.

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

4.7 Various Transmission Modes Supports the E1/T1 transmission and reserves the FE port

Supports microwave, satellite, and optical transmission

Allows 3 U space for the built-in transmission equipment

Supports the IP transmission in hardware and TDM transmission

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 SASAThe 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 AdaptabilityTable 4-1 lists the environment adaptability standards of the BTS3900A.

Table 4-7 Environment adaptability standards of the BTS3900AEnvironment AdaptabilityDescription

Waterproofing and dustproofing The DRFU meets IP54 (International Protection). The PCB meets IP20.

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

3/4C3, close to areas with industrial production with chemical pollution Refer to IEC 721-3-3 (class 3K8H)

Biological environment adaptability4B2

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

Anti-seismic ETS 300 019-1-3 Special components are added to the standard cabinet to meet GR-63-CORE Zone 4 in North America.

Operation temperature40 to +55

Power supply48 V DC, +24 V DC, and 220 V AC input

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

Auxiliary equipmentAFB, 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 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.

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 SynchronizationThe BBU in the BTS3900A cabinet supports multiple clock synchronization modes to meet the different networking requirements.

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

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

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

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

5 OM System

5.1 OM SystemThe 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 5-11 Topology of the OM system

M2000: network management centerLMT: local maintenance terminal

BTS: GSM base transceiver stationBSC: base station controller

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

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.

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.

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 FunctionsThe 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 ManagementThrough 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 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.

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

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 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.

Supports automatic data backup

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; thus shortening the upgrade period.

5.2.5 Performance Management Monitors the performance of the internal and external telecommunications networks and generates alarms when the performance deteriorates

Monitors the operating status of the BTS such as monitoring the traffic volume on the 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 connection management, user authentication, encryption, and forward resolution between the BTS 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 device inputs 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 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.

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

6 Reliability

6.1 System ReliabilityBased 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.

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.

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 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 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.

Monitoring mechanism

The BBU can monitor the environment and reports alarms.

Reliable power supply

Provides a wide range of voltages and surge protection

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

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 ReliabilitySoftware reliability is guaranteed through data redundancy and powerful error tolerance.

6.3.1 Data RedundancyCrucial system data, such as software releases and configuration files, are backed up to 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 different partitions. When a software release is faulty, the backup release can be used instead.

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.

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 ToleranceThe 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:

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.

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.

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.

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 Specifications7.1 RF SpecificationsTable 7-8 RF specifications of the BTS3900AItemSpecifications

Frequency bandOperating BandRX BandTX Band

P-GSM900890 MHz to 915 MHz935 MHz to 960 MHz

E-GSM900880 MHz to 915 MHz925 MHz to 960 MHz

DCS18001710 MHz to 1785 MHz1805 MHz to 1880 MHz

TX specificationsOperating BandOperating ModeOutput Power (GMSK/8PSK)

GSM900Non-combination45W/30W

Combination20W/14W

PBT71W/47W

DCS1800Non-combination40W/26W

Combination18W/12W

PBT63W/42W

RX specificationsChannel TypeStatic Sensitivity

TCH/FS113 dBm

7.2 Mechanical SpecificationsTable 7-9 Mechanical specifications of the BTS3900AItemSpecifications

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 SpecificationsTable 7-10 Power specifications of the BTS3900AItemSpecifications

Power input 48 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)

Power consumption 900 MHz TOC

Typical value: 1250 W

Maximum value: 2180 W

1800 MHz TOC

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 SpecificationsTable 7-11 Surge protection specifications of the BTS3900APortSurge Protection ModeSurge Current

Signal portDifferential mode3kA(8/20us)

Common mode5kA(8/20us)

Transmission portDifferential mode3kA(8/20us)

Common mode5kA(8/20us)

E1 portDifferential mode3kA(8/20us)

Common mode5kA(8/20us)

AC power input portDifferential mode60kA(8/20us)

Common mode60kA(8/20us)

DC power input portDifferential mode10kA(8/20us)

Common mode15kA(8/20us)

7.5 Environment SpecificationsTable 7-12 Environment specifications of the BTS3900AItemSpecifications

Operating environment 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 temperature of the BTS drops by 1 each time the altitude increases by 200 m.)

Mechanical stress: IEC, ETS, and GR-63 Other specifications meet the requirements in ETS 300 019-1-3 Class 3.1.

Transportation environment Transportation temperature: 40 to +70 Relative humidity: 10% to 100% (without wind) Climatic condition: 2K4, including 2K3 and package transportation on 3rd-level roads in high altitude areas without environment protection Mechanical stress: Meeting the falling requirements in the ISTA and QDKBA1109-2005

Meeting the falling requirements in the GR-63

Meeting the requirements for vibration in transportation in the GR-63

Other specifications meet the requirements in the ETS 300 019-1-2 Class 2.3.

Storage environment Storage environment: -40 to +70

Relative humidity: 10% to 100% (without wind) Other specifications meet the requirements in the ETS 300 019-1-1 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/25 and 67 dBA/45)

A Technical StandardsA.1 Electromagnetic Compatibility StandardsThe BTS complies with the following standards related to electromagnetic compatibility:

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

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

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

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

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

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

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

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

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

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

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

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

IEC 61643-1(2002) Surge Protective devices connected to low-voltage power distribution 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 of telecommunication equipment in telecommunication centres

A.3 Safety StandardsThe 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 StandardsA.4.1 Operating Environment StandardsThe BTS complies with the following standards related to the operating environment:

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

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

EUROPEAN ETS 300 019-1-3-Amd

A.4.2 Transportation StandardThe BTS complies with the EUROPEAN ETS 300 019-1-2 Class 2.3 "PUBLIC transportation".

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

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

Abis interfaceAn interface between the BSC and the BTS.

AntennaA 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

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

BSSBase 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.

BTSBase 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

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

D

Double-transceiverA mode in which a board provides two TRXs.

E

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

G

GPRSGeneral 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.

GSMThe 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

HandoverOne 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 diversityThe 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

SDHSynchronous Digital Hierarchy. A communication transmission mechanism defined by the ITU-T. It is derived from the Plesiochronous Digital Hierarchy (PDH).

T

TMATower Mounted Amplifier. A low noise amplifier installed on the antenna.

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

TRXTransceiver. 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 interfaceAlso called radio interface. A standard interface between the MS and the BSS.

C Acronyms and AbbreviationsA

AMRAdaptive MultiRate

B

BSCBase Station Controller

C

CBUSControl BUS

D

DAFMAntenna Front-end Module for DDRM BTS

EBMBBTS3002E Module Backplane

DBUSData BUS

DDCMDouble Combining Module for DDRM BTS

DDPMDual Duplexer Module for DDRM BTS

DDRMDouble transceivers Digital and Radio frequency Module

DMCMMain Control Module for DDRM BTS

DPSMPower Supply Module for DDRM BTS

DSEMDC SPD and EMI Module

E

EDGEEnhanced Data rates for GSM Evolution

EFREnhanced full rate speech codec

EGPRSEnhanced GPRS

EMIExternal Machine Interface

F

FRFrame Relay

G

GMSKGaussian Minimum Shift-frequency Keying

GPRSGeneral Packet Radio Service

GSMGlobal System for Mobile communications

H

HRHalf Rate

M

MMIman-machine interactive

O

OMCOperation and Maintenance Center

R

RFRadio Frequency

RHRelative Humidity

S

SDHSynchronous Digital Hierarchy

T

TCHTraffic Channel

TMATower Mounted Amplifier