BTS3900C CDMA Product Description (V400R006_02)

Airbridge BTS3900C CDMA Base Station

V400R006

Product Description

Issue 02

Date 2008-12-25

Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.

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Copyright © Huawei Technologies Co., Ltd. 2008. All rights reserved.No part of this document may be reproduced or transmitted in any form or by any means without prior writtenconsent of Huawei Technologies Co., Ltd. Trademarks and Permissions

and other Huawei trademarks are the property of Huawei Technologies Co., Ltd.All other trademarks and trade names mentioned in this document are the property of their respective holders. NoticeThe information in this document is subject to change without notice. Every effort has been made in thepreparation of this document to ensure accuracy of the contents, but the statements, information, andrecommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.

http://www.huawei.com

mailto:[email protected]

Contents

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

1 General Structure of the BTS...................................................................................................1-11.1 Physical Structure of the BTS.........................................................................................................................1-2

1.1.1 Appearance of the BTS Cabinet.............................................................................................................1-21.1.2 Structure of the BTS Cabinet.................................................................................................................1-31.1.3 Configuration of the BTS Cabinet.........................................................................................................1-4

1.2 Logical Structure of the BTS..........................................................................................................................1-61.3 Software Structure of the BTS........................................................................................................................1-8

2 Configuration Types of the BTS.............................................................................................2-1

3 Power Distribution Solution of the BTS...............................................................................3-1

4 Clock Synchronization Modes of the BTS............................................................................4-1

5 Transmission and Networking of the BTS...........................................................................5-15.1 Star Networking Mode....................................................................................................................................5-25.2 Chain Networking Mode.................................................................................................................................5-25.3 Tree Networking Mode...................................................................................................................................5-3

6 Operation and Maintenance of the BTS................................................................................6-16.1 Operation and Maintenance Modes of the BTS..............................................................................................6-26.2 Operation and Maintenance Functions of the BTS.........................................................................................6-3

7 Technical Specifications of the BTS.......................................................................................7-17.1 Performance Specifications of the BTS..........................................................................................................7-27.2 Physical and Electrical Specifications of the BTS..........................................................................................7-57.3 Reliability Specifications of the BTS..............................................................................................................7-67.4 Lightning Protection Specifications of the BTS.............................................................................................7-77.5 Safety Specifications of the BTS....................................................................................................................7-77.6 EMC Specifications of the BTS......................................................................................................................7-77.7 Environmental Specifications of the BTS.......................................................................................................7-8

7.7.1 Storage Environment..............................................................................................................................7-87.7.2 Transportation Environment................................................................................................................7-117.7.3 Running Environment..........................................................................................................................7-13

Airbridge BTS3900C CDMA Base StationProduct Description Contents

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Figures

Figure 1-1 Appearance of the BTS3900C cabinet...............................................................................................1-2Figure 1-2 Overall structure of the BTS3900C AC cabinet.................................................................................1-3Figure 1-3 Overall structure of the BTS3900C DC cabinet.................................................................................1-4Figure 1-4 Configuration of the BTS3900C AC cabinet.....................................................................................1-5Figure 1-5 Configuration of the BTS3900C DC cabinet.....................................................................................1-5Figure 1-6 Logical structure of the DC-type BTS3900C.....................................................................................1-6Figure 1-7 Logical structure of the AC-type BTS3900C.....................................................................................1-7Figure 1-8 Software structure of the BTS............................................................................................................1-8Figure 2-1 Typical configurations of the BTS3900C...........................................................................................2-1Figure 3-1 DC power distribution principle of the BTS3900C............................................................................3-1Figure 3-2 AC power distribution principle of the BTS3900C............................................................................3-2Figure 5-1 Star networking mode.........................................................................................................................5-2Figure 5-2 Chain networking mode......................................................................................................................5-3Figure 5-3 Tree networking mode........................................................................................................................5-4Figure 6-1 Networking of the operation and maintenance system.......................................................................6-2

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Tables

Table 4-1 Clock synchronization modes supported by the BTS..........................................................................4-1Table 7-1 Transmit specifications in band class 0 (800 MHz).............................................................................7-2Table 7-2 Receive specifications in band class 0 (800 MHz)..............................................................................7-2Table 7-3 Transmit specifications in band class 1 (1900 MHz)...........................................................................7-3Table 7-4 Receive specifications in band class 1 (1900 MHz)............................................................................7-3Table 7-5 Transmit specifications in band class 6 (2100 MHz)...........................................................................7-3Table 7-6 Receive specifications in band class 6 (2100 MHz)............................................................................7-3Table 7-7 Transmit specifications in band class 14 (1900 MHz).........................................................................7-4Table 7-8 Receive specifications in band class 14 (1900 MHz)..........................................................................7-4Table 7-9 Transmit specifications in band class 15 (AWS).................................................................................7-4Table 7-10 Receive specifications in band class 15 (AWS).................................................................................7-5Table 7-11 RRU3606 cascading specifications of the BTS.................................................................................7-5Table 7-12 BER threshold specifications of the BTS on the transmission links..................................................7-5Table 7-13 Engineering specifications of the BTS3900C....................................................................................7-6Table 7-14 Reliability specifications of the BTS.................................................................................................7-6Table 7-15 Lightning protection specifications of the BTS3900C.......................................................................7-7Table 7-16 Climatic requirements for the storage environment of the equipment...............................................7-8Table 7-17 Requirements for the concentration of mechanically active substances in the storage environment ofthe equipment........................................................................................................................................................7-9Table 7-18 Requirements for the concentration of chemically active substances in the storage environment of theequipment............................................................................................................................................................7-10Table 7-19 Mechanical stress requirements for the storage environment of the equipment..............................7-10Table 7-20 Climatic requirements for the transportation environment of the equipment..................................7-11Table 7-21 Requirements for the concentration of mechanically active substances in the transportation environmentof the equipment..................................................................................................................................................7-12Table 7-22 Requirements for the concentration of chemically active substances in the transportation environmentof the equipment..................................................................................................................................................7-12Table 7-23 Mechanical stress requirements for the transportation environment of the equipment...................7-13Table 7-24 Climatic requirements for the running environment of the equipment............................................7-13Table 7-25 Requirements for the concentration of mechanically active substances in the running environment ofthe equipment......................................................................................................................................................7-14Table 7-26 Requirements for the concentration of chemically active substances in the running environment of theequipment............................................................................................................................................................7-14Table 7-27 Mechanical stress requirements for the running environment of the equipment.............................7-15

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About This Document

PurposeThis document describes the physical structure, logical structure, configuration types, powerdistribution modes, clock synchronization modes, and networking modes of the BTS3900C. Inaddition, this document describes the transmit and receive performance, physical and electricalspecifications, lightning protection performance, and environmental requirements of theBTS3900C. You can obtain a comprehensive understanding of the BTS3900C by reading thisdocument.

Product VersionThe following table lists the product version related to this document.

Product Name Product Version

BTS3900C CDMA V400R006

Intended AudienceThis document is intended for:

l Field engineers

l System engineers

Change HistoryFor the change history of this document, see Change History of the BTS3900C ProductDescription.

Organization1 General Structure of the BTS

This describes the general structure of the BTS in terms of the physical structure, logicalstructure, and software structure.

2 Configuration Types of the BTS

This describes the configuration types of the BTS3900C, which supports CDMA2000 1Xservices and CDMA2000 1xEV-DO services.

3 Power Distribution Solution of the BTS

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This describes the power distribution mode of the BTS3900C, which supports -48 V DC input,220 V AC single-phase input, and 110 V AC dual-live line input.

4 Clock Synchronization Modes of the BTS

This describes the clock synchronization modes of the BTS. The BTS supports various clocksources, such as the GPS/GLONASS clock source, RGPS interface clock source, BITS clocksource, Abis interface clock source, and internal clock source.

5 Transmission and Networking of the BTS

This describes the transmission and networking of the BTS. The networking modes supportedby the BTS include the start networking mode, chain networking mode, and tree networkingmode.

6 Operation and Maintenance of the BTS

This describes the operation and maintenance of the BTS. The operation and maintenance of theBTS refers to the management, monitoring, and maintenance of the BTS. The DBS3900 providesvarious methods and platforms for operation and maintenance to cater to different scenarios.

7 Technical Specifications of the BTS

This describes the technical specifications of the BTS3900C.

ConventionsSymbol Conventions

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

Symbol Description

Indicates a hazard with a high level of risk, which if notavoided,will result in death or serious injury.

Indicates a hazard with a medium or low level of risk, whichif not avoided, could result in minor or moderate injury.

Indicates a potentially hazardous situation, which if notavoided,could result in equipment damage, data loss,performance degradation, or unexpected results.

Indicates a tip that may help you solve a problem or savetime.

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

General Conventions

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

About This DocumentAirbridge BTS3900C CDMA Base Station

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Convention Description

Times New Roman Normal paragraphs are in Times New Roman.

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

Italic Book titles are in italics.

Courier New Examples of information displayed on the screen are inCourier New.

Command Conventions

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


Boldface The keywords of a command line are in boldface.

Italic Command arguments are in italics.

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

{ x | y | ... } Optional items are grouped in braces and separated byvertical bars. One item is selected.

[ x | y | ... ] Optional items are grouped in brackets and separated byvertical bars. One item is selected or no item is selected.

{ x | y | ... }* Optional items are grouped in braces and separated byvertical bars. A minimum of one item or a maximum of allitems can be selected.

[ x | y | ... ]* Optional items are grouped in brackets and separated byvertical bars. Several items or no item can be selected.

GUI Conventions

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


Boldface Buttons, menus, parameters, tabs, window, and dialog titlesare in boldface. For example, click OK.

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

Keyboard Operations

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

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Format Description

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

Key 1+Key 2 Press the keys concurrently. For example, pressing Ctrl+Alt+A means the three keys should be pressed concurrently.

Key 1, Key 2 Press the keys in turn. For example, pressing Alt, A meansthe two keys should be pressed in turn.

Mouse Operations

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

Action Description

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

Double-click Press the primary mouse button twice continuously andquickly without moving the pointer.

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

About This DocumentAirbridge BTS3900C CDMA Base Station

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1 General Structure of the BTS

About This Chapter

This describes the general structure of the BTS in terms of the physical structure, logicalstructure, and software structure.

1.1 Physical Structure of the BTSThis describes the physical structure of the BTS in terms of the cabinet appearance, cabinetstructure, and cabinet configuration.

1.2 Logical Structure of the BTSThis describes the logical structure of the BTS3900C. Logically, the BTS3900C consists of thebaseband system, RF system, power system, and antenna system.

1.3 Software Structure of the BTSThis describes the software structure of the BTS. The BTS software consists of the platformsoftware, signaling protocol software, operation and maintenance software, and data center.

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1.1 Physical Structure of the BTSThis describes the physical structure of the BTS in terms of the cabinet appearance, cabinetstructure, and cabinet configuration.

1.1.1 Appearance of the BTS CabinetThe BTS3900C cabinet is a compact outdoor cabinet.

1.1.2 Structure of the BTS CabinetThe BTS3900C cabinet uses the modular structure and consists of the main components:BBU3900, RRU3606, DCDU, FAN, and power system.

1.1.3 Configuration of the BTS CabinetThe BTS3900C supports the following three power inputs: –48 V DC, 220 V AC single-phase,and 110 V AC dual live wires.

1.1.1 Appearance of the BTS CabinetThe BTS3900C cabinet is a compact outdoor cabinet.

AppearanceFigure 1-1 shows the appearance of the BTS3900C cabinet.

Figure 1-1 Appearance of the BTS3900C cabinet

DimensionsThe dimensions of the BTS3900C cabinet are as follows:

Height x width x depth = 600 mm [23.62 in.] x 400 mm [15.75 in.] x 390 mm [15.35 in.]

1 General Structure of the BTSAirbridge BTS3900C CDMA Base Station

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1.1.2 Structure of the BTS CabinetThe BTS3900C cabinet uses the modular structure and consists of the main components:BBU3900, RRU3606, DCDU, FAN, and power system.

Figure 1-2 and Figure 1-3 show the structure of the BTS3900C cabinet.

Figure 1-2 Overall structure of the BTS3900C AC cabinet

(1) FAN (2) HEUA (3) BBU3900

(4) AC/DC power module (5) AC SPD (6) RRU3606



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Figure 1-3 Overall structure of the BTS3900C DC cabinet

(1) FAN (2) HEUA (3) BBU3900

(4) DCDU (5) Heat exchanger (6) RRU3606

NOTEThe BTS3900C uses the DCDU-03C as the direct current distribution unit (DCDU).

The main components of the BTS3900C are described as follows:

Module Full Name

BBU3900 Baseband unit

DCDU Direct Current Distribution Unit

FAN Fan unit

RRU3606 Remote RF Unit

SPD AC Surge Protection Device

HEUA Heat Exchange Unit

1.1.3 Configuration of the BTS CabinetThe BTS3900C supports the following three power inputs: –48 V DC, 220 V AC single-phase,and 110 V AC dual live wires.

According to the type of the input power, the BTS3900C cabinet is categorized into AC cabinetand DC cabinet. The configuration of the BTS3900C cabinet is as follows:


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l AC cabinet: BBU3900, HEUA, AC/DC power module, SPD, and RRU3606l DC cabinet: BBU3900, HEUA, DCDU, and RRU3606

Figure 1-4 and Figure 1-5 respectively show the configurations of the AC cabinet and DCcabinet of the BTS3900C.

Figure 1-4 Configuration of the BTS3900C AC cabinet

Figure 1-5 Configuration of the BTS3900C DC cabinet



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The main components of the BTS3900C cabinet are described as follows:

Component Description

BBU3900 The BBU3900 is the baseband unit of the BTS3900C. It performsresource management, operation and maintenance, and environmentmonitoring for the BTS.

DCDU The DCDU is the DC power distribution unit of the BTS3900C. TheDCDU-03C supports one DC input and multiple DC distributionoutputs, providing power input for the devices in the BTS.

FAN The FAN is the fan unit of the BTS3900C. It performs heat dissipationand temperature detection for the BTS3900C cabinet.

RRU3606 The RRU3606 is the remote RF unit of the BTS3900C. It receives andsends radio signals to implement the communication between the radionetwork system and the MSs.

AC/DC powermodule

The AC/DC power module of the BTS3900C converts and distributespower for the BTS.

SPD The SPD protects external AC power of the BTS against surge current.

HEUA The HEUA is the heat exchange unit of the BTS3900C. It providespower for the FAN, monitors the running status of the FAN, collectsthe alarm information about the cabinet, and reports the alarminformation to the BBU3900.

1.2 Logical Structure of the BTSThis describes the logical structure of the BTS3900C. Logically, the BTS3900C consists of thebaseband system, RF system, power system, and antenna system.

Figure 1-6 shows the logical structure of the DC-type BTS3900C.

Figure 1-6 Logical structure of the DC-type BTS3900C

Figure 1-7 shows the logical structure of the AC-type BTS3900C.


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Figure 1-7 Logical structure of the AC-type BTS3900C

Baseband SystemThe baseband system consists mainly of BBU3900s and performs the following functions:l Providing the physical interface for data exchange between the BTS and the BSC

l Modulating and demodulating baseband data and CDMA channel signals

l Providing system synchronization clock signals

l Implementing resource management, operation and maintenance, and environmentmonitoring

RF SystemThe RF system consists mainly of RRU3606s and performs the following functions:l On the forward links, implementing up-conversion and power amplification for modulated

transmitted signals and filtering the transmitted signals to make them meet the requirementsof the Um interface protocol

l On the reverse link, filtering the signals received by the antenna to suppress out-bandinterference and performing low noise amplification, channel division, down-conversion,and channel-selective filtering

Power Supply Systeml The DC power supply system consists mainly of DCDUs and performs the following

functions:– The DCDU is a DC power distribution unit and feeds power to the power-consuming

components in the cabinet.l The AC power supply system consists mainly of the AC lightning protection box and AC/

DC power modules. The AC power supply system performs the following functions:– Performing lightning protection for the AC power input



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– Converting the AC power supply to -48 V DC power supply

– Distributing the -48 V DC power supply to power-consuming components

Antenna SystemThe antenna system consists of the RF antenna system and satellite antenna system.

The antenna system performs the following functions:l Satellite antenna system

Through the satellite synchronization antenna, the BTS receives signals from the GPS orGLONASS system and performs wireless synchronization.

l RF antenna systemThe RF antenna system transmits modulated RF signals and receives the signals from theMS.

1.3 Software Structure of the BTSThis describes the software structure of the BTS. The BTS software consists of the platformsoftware, signaling protocol software, operation and maintenance software, and data center.

The signaling protocol software, operation and maintenance software, and data center areapplications, whereas the platform software is supporting software.

Figure 1-8 shows the software structure of the BTS.

Figure 1-8 Software structure of the BTS

Platform SoftwareThe major functions of the platform software are as follows:l Timing management

l Task management


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l Memory management

Data CenterThe data center stores the configuration data of each module.

Signaling Protocol SoftwareThe major functions of the signaling protocol software are as follows:l Radio network layer protocol processing

l Transport network layer protocol processing

l Managing the internal logical resources of the BTS, for example, cells and channels, andimplementing mapping between physical resources and logical resources

Operation and Maintenance SoftwareThe operation and maintenance software works with the maintenance terminal, for example, theLMT or M2000, to perform the operation and maintenance of the BTS.

The major functions of the operation and maintenance software are as follows:l Equipment management

l Data configuration

l Performance management

l Commissioning management

l Alarm management

l Software management

l Tracing management

l Security management

l Backup management

l Log management



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2 Configuration Types of the BTS

This describes the configuration types of the BTS3900C, which supports CDMA2000 1Xservices and CDMA2000 1xEV-DO services.

NOTE

l The typical configuration examples described in this document are for reference only. The actualconfiguration of a site should be based on the actual situation.

l Each HCPM can process 285 forward channels and 256 reverse channels.

l Each HECM supports 192 subscribers.

l Each RRU3606 supports eight carriers.

The major service processing units of the BTS3900C are the HCPM, HECM, CMPT, and CRFU.The CMPT, HCPM, and HECM are installed in the BBU3900. Figure 2-1 shows the typicalconfigurations of the BTS3900C.

Figure 2-1 Typical configurations of the BTS3900C

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Typical Configuration of the BTS3900C for CDMA2000 1X Services

ConfigurationType

Quantity ofHCPMs

Quantity ofCMPTs

Number ofRRU3606s

O(1) 1 1 1

O(2) 1 1 1

Typical Configuration of the BTS3900C for CDMA2000 1xEV-DO Services

ConfigurationType

Quantity ofHECMs

Quantity ofCMPTs

Number ofRRU3606s

O(1) 1 1 1

O(2) 1 1 1

2 Configuration Types of the BTSAirbridge BTS3900C CDMA Base Station

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3 Power Distribution Solution of the BTS

This describes the power distribution mode of the BTS3900C, which supports -48 V DC input,220 V AC single-phase input, and 110 V AC dual-live line input.

l The DC power distribution principle of the BTS3900C is as follows:

1. Connecting external -48 V DC power supply to the DCDU2. The DCDU distributes power for the BTS.

Figure 3-1 shows the DC power distribution principle of the BTS3900C.

Figure 3-1 DC power distribution principle of the BTS3900C

l The AC power distribution principle of the BTS3900C is as follows:

1. The external AC power supply is connected to the AC lightning protection box, whichperforms lightning protection for the power supply.

2. The external AC power supply is connected to the AC/DC power module.3. The AC/DC power module converts the AC power supply to -48 V DC power supply

and distributes the power supply to the equipment.

Figure 3-2 shows the AC power distribution principle of the BTS3900C.

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Figure 3-2 AC power distribution principle of the BTS3900C

3 Power Distribution Solution of the BTSAirbridge BTS3900C CDMA Base Station

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4 Clock Synchronization Modes of the BTS

This describes the clock synchronization modes of the BTS. The BTS supports various clocksources, such as the GPS/GLONASS clock source, RGPS interface clock source, BITS clocksource, Abis interface clock source, and internal clock source.

Table 4-1 lists the clock synchronization modes supported by the BTS.

Table 4-1 Clock synchronization modes supported by the BTS

ClockSynchronizationMode

Description

GPS/GLONASSclock source

The BTS provides the GPS/GLONASS clock input port and obtainsclock signals through the external GPS/GLONASS equipment.

RGPS clock source The BTS provides the RGPS interface and obtains clock signalsthrough the external RGPS equipment.

BITS clock source The BBU3900 provides the 2.048 MHz BITS clock port to supportthe BITS clock mode.

Abis interface clocksource

The BBU3900 supports the extraction of clock signals directly fromports such as the E1/T1 port. The clock module performs frequencydivision, phase locking, and phase adjustment for the clock signals.In this way, accurate 2 MHz and 8 KHz clock signals are obtainedand used for frame synchronization and bit synchronization insidethe BTS.

Internal clock signals When external clock sources are not available, the oscillators of theBBU3900 boards provide 10 MHz clock signals to guarantee thenormal running of the BTS.

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5 Transmission and Networking of the BTS

About This Chapter

This describes the transmission and networking of the BTS. The networking modes supportedby the BTS include the start networking mode, chain networking mode, and tree networkingmode.

5.1 Star Networking ModeThis describes the application scenarios, advantages, and disadvantages of the star networkingmode.

5.2 Chain Networking ModeThis topic describes the application scenarios, advantages, and disadvantages of the chainnetworking mode.

5.3 Tree Networking ModeThis describes the application scenarios, advantages, and disadvantages of the tree networkingmode.

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5.1 Star Networking ModeThis describes the application scenarios, advantages, and disadvantages of the star networkingmode.

Application Scenarios

As the most commonly used networking mode, the star networking mode is especially applicableto densely populated areas.

Figure 5-1 shows the star networking mode.

Figure 5-1 Star networking mode

Advantages

l The BTS is directly connected to the BSC, thus guaranteeing simplicity in networking andconvenience in engineering, maintenance, and capacity expansion.

l Data transmission is implemented directly between the BTS and the BSC, and thereforesignals do not have to go through many nodes. In this way, the reliability of the line is high.

Disadvantages

The star networking modes requires more transmission resources than other networking modes.

5.2 Chain Networking ModeThis topic describes the application scenarios, advantages, and disadvantages of the chainnetworking mode.

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Application ScenariosThe chain networking mode is applicable to sparsely populated strip areas, for example, areasalong superhighways and railways.

Figure 5-2 shows the chain networking mode.

Figure 5-2 Chain networking mode

AdvantagesThe chain networking mode helps reduce the costs of transmission equipment, of engineeringconstruction, and of transmission link rental.

Disadvantagesl Signals go through a large number of nodes, and therefore the line reliability is low.

l Faults in upper-level BTSs may affect the normal operation of lower-level BTSs.

l The number of chain levels cannot exceed three.

5.3 Tree Networking ModeThis describes the application scenarios, advantages, and disadvantages of the tree networkingmode.

Application ScenariosThe tree networking mode is applicable to areas where network structures, site distribution, andsubscriber distribution are complicated, for example, areas where subscribers are widelydistributed and hot spots gather.

Figure 5-3 shows the tree networking mode.

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Figure 5-3 Tree networking mode

AdvantagesThe transmission cable loss in tree networking mode is less than that in star networking mode.

Disadvantagesl Signals travel through many nodes, which cause low transmission reliability and

construction and maintenance difficulties.l Faults in upper-level BTSs may affect the normal operation of lower-level BTSs.

l Capacity expansion is difficult because it may require extensive network reconstruction.

l The number of tree levels cannot exceed three.

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6 Operation and Maintenance of the BTS

About This Chapter

This describes the operation and maintenance of the BTS. The operation and maintenance of theBTS refers to the management, monitoring, and maintenance of the BTS. The DBS3900 providesvarious methods and platforms for operation and maintenance to cater to different scenarios.

6.1 Operation and Maintenance Modes of the BTSThis describes the operation and maintenance modes of the BTS. The BTS can be maintainedlocally, through the LMT, or through the centralized network management system.

6.2 Operation and Maintenance Functions of the BTSThis describes the operation and maintenance functions of the BTS. These functions are usedfor equipment management, software management, configuration management, servicemanagement, performance management, security management, alarm management, andenvironment monitoring.

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6.1 Operation and Maintenance Modes of the BTSThis describes the operation and maintenance modes of the BTS. The BTS can be maintainedlocally, through the LMT, or through the centralized network management system.

Figure 6-1 shows the networking of the operation and maintenance system.

Figure 6-1 Networking of the operation and maintenance system

The BTS supports the following operation and maintenance modes:

l Maintenance through the centralized network management system: The M2000, Huawei'scentralized management system for wireless networks, can be used to maintain BTSsthrough the operation and maintenance network. The M2000 supports the operation andmaintenance of sites, cells, carriers, channels, and boards. Centralized networkmanagement is used for the maintenance of multiple BTSs.

l Maintenance through the LMT: The LMT can be used to maintain the BTS through theoperation and maintenance link provided by the Abis interface between the BSC and theBTS. The LMT communicates with the BSC through a LAN. Through the LMT, you canperform operation and maintenance for the sites, cells, carriers, channels, and boards. TheLMT is used to configure and adjust the data of the BSC and BTS.

l Local maintenance: The maintenance terminal of the BTS is used to maintain the BTSlocally through Ethernet. Through the maintenance terminal of the BTS, you can performoperation and maintenance for the sites, cells, carriers, baseband, channels, and boards. Themaintenance terminal is used to maintain single BTS.

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6.2 Operation and Maintenance Functions of the BTSThis describes the operation and maintenance functions of the BTS. These functions are usedfor equipment management, software management, configuration management, servicemanagement, performance management, security management, alarm management, andenvironment monitoring.

Equipment ManagementEquipment management refers to equipment maintenance and data configuration. The detailedequipment management functions are as follows:l Equipment maintenance: board resetting, equipment status management, equipment self-

testing, active/standby switchovers, and time calibrationl Data configuration: configuration, querying, and backup of equipment parameters, for

example, configurations of the hardware, clock parameters, algorithm parameters, and RFparameters

Software ManagementThe detailed software management functions are as follows:l Software activation

l Checking the consistency between software and hardware versions

l Querying hardware and software versions

l Upgrading the software version

Configuration ManagementThe detailed configuration management functions are as follows:l Checking data consistency in the addition, deletion, and modification of the BTS data

l Supporting automatic data backup

l Supporting dynamic data configuration, which enables the data to take effect immediately,and static data configuration, which requires the BTS to be reset for the data to take effect

Service ManagementThe detailed service management functions are as follows:l Supporting service operation and maintenance functions, such as parameter setting and

alarm querying, for the equipment, such as baseband boards and environment monitoringdevice

l Supporting complete self-checks for hardware installation

Performance ManagementThe detailed performance management functions are as follows:l Monitoring the performance of the internal and external communication networks and

generating alarms when the performance deteriorates.

Airbridge BTS3900C CDMA Base StationProduct Description 6 Operation and Maintenance of the BTS


6-3

l Monitoring the running of the system, for example, monitoring of the traffic over each portand statistics of technical data during running

l Monitoring of the usage of key components such as the CPUs of boards

Security Management

The BTS supports the management of connection between the BTS software and the OMC,subscriber authentication and encryption, and forward and reverse resolution of interfacemessages.

Alarm Management

Alarm management refers to equipment alarm management and environment alarmmanagement.

l Equipment alarm management

The equipment is monitored in real time. When a fault or exception occurs, an alarm isreported, and the alarm management function of the LMT or M2000 is used to display thealarm information and give suggestions for handling the alarm.

The alarm management system of the M2000 is connected to an alarm box through theserial port and supports both audible and visual alarms. The user can subscribe to the alarms.When an alarm is generated, it is sent to the mobile phones or pagers of maintenancepersonnel so that the maintenance personnel can obtain the information of the fault orexception in time.

l Environment alarm management

Generally, the equipment room of the BTS are sparsely distributed and not attended.Compared with the equipment room of an exchange, the equipment room of the BTS hasfewer and simpler facilities, and the equipment runs in harsh environments. Besides,accidents such as water damage and fire may occur in the equipment room. The BTS hasa powerful environment monitoring subsystem, which guarantees the normal running ofequipment and helps you deal with emergencies.

The detailed alarm management functions are as follows:

l Alarm detection

l Alarm reporting

l Alarm masking

l Alarm confirmation

l Alarm pre-processing

l Alarm correlation processing

l Help information for alarm handling

Environment Monitoring

The detailed environment monitoring functions are as follows:

l Monitoring the environment on an all-round basis

6 Operation and Maintenance of the BTSAirbridge BTS3900C CDMA Base Station

Product Description


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7 Technical Specifications of the BTS

About This Chapter

This describes the technical specifications of the BTS3900C.

7.1 Performance Specifications of the BTSThis describes the performance specifications of the BTS.

7.2 Physical and Electrical Specifications of the BTSThis describes the engineering specifications of the BTS3900C in terms of the working voltage,dimensions, weight, power consumption, and working environment.

7.3 Reliability Specifications of the BTSThis topic describes the reliability specifications of the BTS.

7.4 Lightning Protection Specifications of the BTSThis describes the lightning protection specifications of the BTS3900C.

7.5 Safety Specifications of the BTSThis describes the safety specifications of the BTS.

7.6 EMC Specifications of the BTSThis describes the EMC specifications of the BTS.

7.7 Environmental Specifications of the BTSThis describes the requirements for the storage environment, transportation environment, andrunning environment of the BTS3900A.

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7-1

7.1 Performance Specifications of the BTSThis describes the performance specifications of the BTS.

NOTE

l The transmit power is the maximum value measured at the RF port of the cabinet.

l The multi-carrier transmit power refers to the total power instead of the power of each carrier.

l The signal receive sensitivity is the main and diversity receive sensitivity at RC3.

Transmit and Receive SpecificationsThe transmit and receive specifications refer to the technical parameters of the transceiver ofthe BTS3900C. The receive and transmit specifications of the BTS3900C in different bandclasses are as follows:

l Receive and transmit specifications in band class 0Table 7-1 and Table 7-2 list the performance specifications in band class 0 (800 MHz).

Table 7-1 Transmit specifications in band class 0 (800 MHz)

Item Specification

Working frequencyband

870 MHz to 880 MHz

Channel bandwidth 1.2288 MHz

Channel precision 30 kHz

Frequency tolerance ≤ ±0.05 ppm

Transmit power ≤ 60 W

Table 7-2 Receive specifications in band class 0 (800 MHz)

Item Specification


825 MHz to 835 MHz


Channel precision 30 KHz

Signal receivesensitivity

Better than -128 dBm (main and diversity receiving at RC3)


7 Technical Specifications of the BTSAirbridge BTS3900C CDMA Base Station

Product Description


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Item Specification


1930 MHz to 1990 MHz






Item Specification









Item Specification








Item Specification







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Item Specification





Item Specification








Item Specification







l Receive and transmit specifications in band class 15Table 7-9 and Table 7-10 list the performance specifications in band class 15 (AWS).

Table 7-9 Transmit specifications in band class 15 (AWS)

Item Specification








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Table 7-10 Receive specifications in band class 15 (AWS)

Item Specification







RRU3606 Cascading SpecificationsTable 7-11 lists the RRU3606 cascading specifications of the BTS.

Table 7-11 RRU3606 cascading specifications of the BTS

Item Specification

Maximum distance of single-levelcascading

70 km [43.50 mi]

Maximum number of cascading levels Three

Maximum total cascading distance 90 km [55.92 mi]

BER Threshold Specifications of the BTS on the Transmission LinksThe BERs on transmission links have roughly the same impact on the UNI and IMA modes.Table 7-12 shows the BER threshold specifications on BTS transmission links.

Table 7-12 BER threshold specifications of the BTS on the transmission links

Type Maximum BER Threshold

CDMA2000 1X voice services 2 x 10e-5

Packet services 2 x 10e-6

Maintenance function 5 x 10e-5

7.2 Physical and Electrical Specifications of the BTSThis describes the engineering specifications of the BTS3900C in terms of the working voltage,dimensions, weight, power consumption, and working environment.

Table 7-13 lists the engineering specifications of the BTS3900C.



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Table 7-13 Engineering specifications of the BTS3900C

Item Specification

Voltage Voltage for -48 V DC input: -38.4 V DC to -57 V DCVoltage for single-phase 220 V AC input: 176 V AC to 290V ACVoltage for dual-live line 110 V AC input: 90 V AC to 135V AC

Dimensions (height x width xdepth)

600 mm [23.62 in.] x 400 mm [15.75 in.] x 390 mm [15.35in.]

Cabinet weight Fully configured cabinet: ≤ 50 kg [110.23 lb]

Power consumption of theentire BTS

Configuration Maximum powerconsumption

O(4) 450 W

NOTE

l The power consumption data is the maximum power consumptionmeasured when the system works in the 800 MHz band class intypical configurations and uses -48 V DC power supply.

l The power consumption of the transmission equipment is notmeasured in the power consumption of the BTS.

l The maximum power consumption of the BTS varies accordingto the bands and configurations.

Ambient temperature forrunning

-40oC [-40oF] to +52oC [+125.6oF] (solar radiation notconsidered)

Relative humidity forrunning

5% RH to 100% RH

Noise ≤ 65 dBA

7.3 Reliability Specifications of the BTSThis topic describes the reliability specifications of the BTS.

Table 7-14 lists the reliability specifications of the BTS.

Table 7-14 Reliability specifications of the BTS

Item Specifications

Availability ≥99.999%

MTBF (Mean time between system failures) ≥ 100,000 hours

MTTR (Mean time to repair) ≤ 1 hour


Product Description


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7.4 Lightning Protection Specifications of the BTSThis describes the lightning protection specifications of the BTS3900C.

Table 7-15 lists the lightning protection specifications of the BTS3900C.

Table 7-15 Lightning protection specifications of the BTS3900C

Item Specification

AC power input port Differential mode: ± 40 kA, 8/20 us waveCommon mode: ±40 kA, 8/20 us wave

DC power input port Differential mode: ± 10 kA, 8/20 us waveCommon mode: ±15 kA, 8/20 us wave

RRU3606 DC power input port Differential mode: ± 10 kA, 8/20 us waveCommon mode: ±15 kA, 8/20 us wave

E1/T1signal port (with the lightningprotection board)

Differential mode: ± 3 kA, 8/20 us waveCommon mode: ±5 kA, 8/20 us wave

FE signal port (with the lightningprotection board)

Differential mode: ± 1 kA, 8/20 us waveCommon mode: ±2 kA, 8/20 us wave

Antenna port (including the GPS port) Differential mode: ± 8 kA, 8/20 us waveCommon mode: ±40 kA, 8/20 us wave

7.5 Safety Specifications of the BTSThis describes the safety specifications of the BTS.

The BTS complies with the following safety standards:

l GB4943-2000: Safety of information technology equipment.

l IEC60950 Safety of information technology equipment Including Electrical BusinessEquipment.

l IEC60215 Safety requirement for radio transmitting equipment.

l 73/23/EEC Low Voltage Directive.

l UL 1950 Safety of information technology equipment Including Electrical BusinessEquipment.

l IEC60529 Classification of degrees of protection provided by enclosure. (IP Code).

7.6 EMC Specifications of the BTSThis describes the EMC specifications of the BTS.

The BTS meets the requirements for electromagnetic compatibility and complies with thefollowing standards:



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l R&TTE Directive 1999/5/EC

l R&TTE Directive 89/336/EEC

l ETSI EN 301489-1/26

l ETSI EN 301908-1/5

l ITU-R SM.329-10

The BTS passes European standard certifications.

7.7 Environmental Specifications of the BTSThis describes the requirements for the storage environment, transportation environment, andrunning environment of the BTS3900A.

The BTS3900A complies with the following environmental standards:

l ETSI EN 300 019-1-2 Class 1.2

l ETSI EN 300 019-1-2 Class 2.3

l ETSI EN 300 019-1-3 Class 3.1

7.7.1 Storage EnvironmentThis describes the requirements for the storage environment of the equipment.

7.7.2 Transportation EnvironmentThis describes the requirements for the transportation environment of the equipment.

7.7.3 Running EnvironmentThis describes the requirements for the running environment of the equipment.

7.7.1 Storage EnvironmentThis describes the requirements for the storage environment of the equipment.

Climatic RequirementsTable 7-16 lists the climatic requirements for the storage environment of the equipment.

Table 7-16 Climatic requirements for the storage environment of the equipment

Item Range

Temperature -40oC [-40oF] to +70oC [+158oF]

Temperature change rate ≤ 1oC/min

Relative humidity 5% RH to 100% RH

Altitude ≤ 5000 m [16,404.2 ft]

Air pressure 70 kPa to 106 kPa

Solar radiation ≤ 1120 W/m2

Thermal radiation ≤ 600 W/m2


Product Description


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Item Range

Wind speed ≤ 50 m/s

Waterproofing RequirementsThe waterproofing requirements for the storage environment of the equipment are as follows:

l If possible, store the equipment indoors and ensure that:– No water accumulates on the ground or may drop onto the package of the equipment.

– The equipment is kept away from devices that may leak water, for example, automaticfire-fighting devices and heating devices.

l If the equipment has to be stored outdoors, ensure that:– The package is intact.

– Appropriate waterproofing measures are taken to prevent rainwater from entering thepackage.

– No water accumulates on the ground or may drop onto the package of the equipment.

– The package is not exposed directly to sunlight.

Biological RequirementsThe biological requirements for the storage environment of the equipment are as follows:

l The environment is not conducive to the growth of microorganisms, such as fungi.

l The equipment is protected from rodents, such as mice.

Air Purity RequirementsThe air purity requirements for the storage environment of the equipment are as follows:

l The air is free from explosive, electroconductive, magnetoconductive, and corrosive dust.

l The concentration of mechanically active substances complies with the requirements listedin Table 7-17.

Table 7-17 Requirements for the concentration of mechanically active substances in thestorage environment of the equipment

Mechanically ActiveSubstance

Unit Concentration

Suspended dust mg/m3 ≤ 5

Precipitable dust mg/m2·h ≤ 500

Grit mg/m3 ≤ 300



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Unit Concentration

NOTE

l The diameter of a suspended dust particle is not greater than 75 μm.

l The diameter of a precipitable dust particle is not smaller than 75 μm and not greater than 150μm.

l The diameter of a piece of grit is not smaller than 150 μm and not greater than 1000 μm.

l The concentration of chemically active substances complies with the requirements listedin Table 7-18.

Table 7-18 Requirements for the concentration of chemically active substances in thestorage environment of the equipment

Chemically ActiveSubstance Unit Concentration

SO2 mg/m3 ≤ 0.30

H2S mg/m3 ≤ 0.10

NO2 mg/m3 ≤ 0.05

NH3 mg/m3 ≤ 1.00

Cl2 mg/m3 ≤ 0.10

HCl mg/m3 ≤ 0.10

HF mg/m3 ≤ 0.01

O3 mg/m3 ≤ 0.05

Mechanical Stress Requirements

Table 7-19 lists the mechanical stress requirements for the storage environment of theequipment.

Table 7-19 Mechanical stress requirements for the storage environment of the equipment

Item Sub-item Range

Sinusoidal vibration Offset ≤ 1.5 mm [0.06 in.] -

Acceleration - ≤ 5 m/s2

Frequency range 2 Hz to 9 Hz 9 Hz to 200 Hz

Unsteady impact Impact responsespectrum II

≤ 250 m/s2

Static payload ≤ 5 kPa


Product Description


Issue 02 (2008-12-25)

Item Sub-item Range

NOTE

l The impact response spectrum refers to the maximum acceleration response curve generated by theequipment under specified impact excitation. Impact response spectrum II means that the duration ofsemi-sine impact response spectrum is 6 ms.

l The static payload refers to the capability of the packed equipment to bear the weight from above inthe stipulated stack method.

7.7.2 Transportation EnvironmentThis describes the requirements for the transportation environment of the equipment.

Climatic Requirements

Table 7-20 lists the climatic requirements for the transportation environment of the equipment.

Table 7-20 Climatic requirements for the transportation environment of the equipment

Item Range

Temperature -40oC [-40oF] to +70oC [+158oF]



Altitude ≤ 5000 m [16,404.2 ft]





Waterproofing Requirements

The waterproofing requirements for the transportation environment of the equipment are asfollows:

l The package is intact.

l Appropriate waterproofing measures are taken to prevent rainwater from entering thepackage.

l No water accumulates in the vehicle.

Biological Requirements

The biological requirements for the transportation environment of the equipment are as follows:




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Air Purity Requirements

The requirements for the air purity in the transportation environment of the equipment are asfollows:


l The concentration of mechanically active substances complies with the requirements listedin Table 7-21.

Table 7-21 Requirements for the concentration of mechanically active substances in thetransportation environment of the equipment


Unit Concentration

Suspended dust mg/m3 ≤ 35

Precipitable dust mg/m2·h ≤ 0.2

Grit mg/m3 ≤ 30

NOTE

l The diameter of a suspended dust particle is not greater than 75 μm.

l The diameter of a precipitable dust particle is not smaller than 75 μm and not greater than 150μm.

l The diameter of a piece of grit is not smaller than 150 μm and not greater than 1000 μm.


Table 7-22 Requirements for the concentration of chemically active substances in thetransportation environment of the equipment

Chemically ActiveSubstance

Unit Concentration

SO2 mg/m3 ≤ 0.30

H2S mg/m3 ≤ 0.10

NO2 mg/m3 ≤ 0.05

NH3 mg/m3 ≤ 1.00

Cl2 mg/m3 ≤ 0.10

HCl mg/m3 ≤ 0.10

HF mg/m3 ≤ 0.01

O3 mg/m3 ≤ 0.05


Product Description


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Mechanical Stress RequirementsTable 7-23 lists the mechanical stress requirements for the transportation environment of theequipment.

Table 7-23 Mechanical stress requirements for the transportation environment of the equipment

Item Sub-item Range

Sinusoidalvibration

Offset ≤ 3.5 mm [0.14in.]

- -

Acceleration - ≤ 10 m/s2 ≤ 15 m/s2

Frequencyrange

2 Hz to 9 Hz 9 Hz to 200 Hz 200 Hz to 500Hz

Randomvibration

Accelerationspectral density

30 m2/s3 3 m2/s3 1 m2/s3

Frequencyrange

2 Hz to 10 Hz 10 Hz to 200 Hz 200 Hz to 500Hz

Unsteadyimpact

Impact responsespectrum II

≤ 250 m/s2

Static payload ≤ 10 kPa

NOTE



7.7.3 Running EnvironmentThis describes the requirements for the running environment of the equipment.

Climatic RequirementsTable 7-24 lists the climatic requirements for the running environment of the equipment.

Table 7-24 Climatic requirements for the running environment of the equipment

Item Range

Temperature -40oC [-40oF] to +52oC [+125.6oF] (solarradiation not considered)



Altitude ≤ 4000 m [13,123.36 ft]



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Item Range





NOTEThe temperature and humidity should be measured 1.5 m [4.92 ft] above the ground and 0.4 m [1.31 ft]away from the front of the cabinet when no protective board is installed at the front and rear of the cabinet.

Biological RequirementsThe biological requirements for the running environment of the equipment are as follows:



Air Purity RequirementsThe air purity requirements for the running environment of the equipment are as follows:


l The concentration of mechanically active substances complies with the requirements (forthe BBU only) listed in Table 7-25.

Table 7-25 Requirements for the concentration of mechanically active substances in therunning environment of the equipment

Mechanically ActiveSubstance Unit Concentration

Dust particles Particles/m3 ≤ 3×104

(no visible dustaccumulated on desktopswithin three days)

Note: The diameter of a dust particle is not smaller than 5 μm.


Table 7-26 Requirements for the concentration of chemically active substances in therunning environment of the equipment


SO2 mg/m3 ≤ 0.30

H2S mg/m3 ≤ 0.10


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NH3 mg/m3 ≤ 1.00

Cl2 mg/m3 ≤ 0.10

HCl mg/m3 ≤ 0.10

HF mg/m3 ≤ 0.01

O3 mg/m3 ≤ 0.05

NOx mg/m3 ≤ 0.05

Mechanical Stress RequirementsTable 7-27 lists the mechanical stress requirements for the running environment of theequipment.

Table 7-27 Mechanical stress requirements for the running environment of the equipment

Item Sub-item Range

Sinusoidal vibration Offset ≤ 3 mm [0.12 in.] -

Acceleration - ≤ 10.0m/s2

Frequency range 2 Hz to 9 Hz 9 Hz to 200 Hz

Unsteady impact Impact responsespectrum II

≤ 250 m/s2

Static payload 0

NOTE





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BTS3900C CDMA Product Description (V400R006_02)

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