88814383 Huawei BTS3900A GSM Product Description V300R008 03

BTS3900A GSM

V300R008

Product Description

Issue 03

Date 2008-07-15

Part Number

Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd

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

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

Bantian, LonggangShenzhen 518129People's Republic of China

Website: http://www.huawei.com

Email: [email protected]

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

and other Huawei trademarks are the property of Huawei Technologies Co., Ltd.All other trademarks and trade names mentioned in this document are the property of their respective holders. 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 System Structure of the BTS3900A.........................................................................................1-1

2 Overview of the BTS3900A......................................................................................................2-12.1 Marketing Orientation of the BTS3900A........................................................................................................2-22.2 Structure of the BTS3900A Cabinet...............................................................................................................2-22.3 Logical Structure of the BTS3900A................................................................................................................2-72.4 Software Structure of the BTS........................................................................................................................2-8

3 Power Distribution Modes of the BTS3900A.......................................................................3-1

4 Monitoring System of the BTS3900A.....................................................................................4-1

5 Reference Clocks of the BTS3900/BTS3900A........................................................................5-1

6 Signal Flow of the BTS3900/BTS3900A.................................................................................6-1

7 Topologies of the BTS...............................................................................................................7-1

8 Configuration of the BTS3900/BTS3900A.............................................................................8-18.1 Configuration Principles of the BTS3900/BTS3900A....................................................................................8-28.2 RF Signal Cable Connections of the DRFU....................................................................................................8-78.3 Topology of DRFUs Connected by CPRI Cables.........................................................................................8-148.4 Typical Configuration of the BTS3900/BTS3900A.....................................................................................8-16

9 OM System of the BTS..............................................................................................................9-19.1 OM Modes of the BTS....................................................................................................................................9-29.2 OM Functions of the BTS...............................................................................................................................9-6

10 Technical Specifications of the BTS3900A........................................................................10-110.1 Capacity Specifications of the BTS3900/BTS3900A.................................................................................10-210.2 RF Specifications of the BTS3900/BTS3900A..........................................................................................10-210.3 Engineering Specifications of the BTS3900A............................................................................................10-310.4 Surge Protection Specifications of the BTS3900A.....................................................................................10-510.5 Physical Ports of the BTS3900A.................................................................................................................10-510.6 Compliance Standards of the BTS3900/BTS3900A...................................................................................10-810.7 Environmental Requirements of the BTS3900A......................................................................................10-10

10.7.1 Environmental Requirements for Operating the BTS3900A...........................................................10-10

BTS3900A GSMProduct Description Contents

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10.7.2 Environmental Requirements for Transporting the BTS3900A......................................................10-1210.7.3 Environmental Requirements for Storing the BTS3900A...............................................................10-15

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Figures

Figure 1-1 BTS3900A system architecture..........................................................................................................1-1Figure 2-1 Typical configuration of a BTS3900A cabinet (1).............................................................................2-3Figure 2-2 Typical configuration of a BTS3900A cabinet (2).............................................................................2-4Figure 2-3 Typical configuration of a BTS3900A cabinet (3).............................................................................2-5Figure 2-4 Typical configuration of a BTS3900A cabinet (4).............................................................................2-6Figure 2-5 Logical Structure of the BTS3900A...................................................................................................2-7Figure 2-6 Software structure of the BTS............................................................................................................2-8Figure 3-1 Power distribution of the BTS3900A.................................................................................................3-1Figure 4-1 Monitoring ports of the BBU..............................................................................................................4-1Figure 4-2 Structure of the monitoring system....................................................................................................4-2Figure 6-1 DL traffic signal flow.........................................................................................................................6-1Figure 6-2 UL traffic signal flow.........................................................................................................................6-2Figure 6-3 Signaling flow.....................................................................................................................................6-3Figure 7-1 Star topology of the BTS....................................................................................................................7-1Figure 7-2 Chain topology of the BTS.................................................................................................................7-1Figure 7-3 Tree topology of the BTS...................................................................................................................7-2Figure 7-4 Ring topology of the BTS...................................................................................................................7-2Figure 7-5 Regroupment for disconnection in the ring topology.........................................................................7-5Figure 8-1 Slots of the BBU.................................................................................................................................8-7Figure 8-2 Mapping between the RF signal cables and their colors....................................................................8-8Figure 8-3 Connections of RF cables for S1 (without transmit diversity/with transmit diversity)/S2 (withouttransmit diversity).................................................................................................................................................8-9Figure 8-4 Connections of RF cables for S2 (PBT)/S3 (without transmit diversity)/S4 (without transmit diversity).............................................................................................................................................................................8-10Figure 8-5 Connections of RF signal cables for S2 (4-way receive diversity)..................................................8-11Figure 8-6 Connections of RF cables for S2 (transmit diversity)/S4 (transmit independency).........................8-12Figure 8-7 Connections of RF cables for S5 (without transmit diversity)/S6 (without transmit diversity).......8-13Figure 8-8 Connections of RF cables for S7 (without transmit diversity)/S8 (without transmit diversity).......8-14Figure 8-9 Typical topology of the DRFUs.......................................................................................................8-15Figure 9-1 Network structure of the OM system.................................................................................................9-2

BTS3900A GSMProduct Description Figures


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Tables

Table 4-1 Monitoring signals of the BTS3900A..................................................................................................4-2Table 4-2 Functions of the Monitoring System....................................................................................................4-2Table 7-1 Comparison of Network Topologies....................................................................................................7-3Table 8-1 RF configuration principles of the BTS3900/BTS3900A....................................................................8-3Table 8-2 Configuration principles of BBU boards.............................................................................................8-7Table 8-3 Configuration (1)..................................................................................................................................8-9Table 8-4 Configuration (2)................................................................................................................................8-10Table 8-5 Configuration (3)................................................................................................................................8-11Table 8-6 Configuration (4)................................................................................................................................8-12Table 8-7 Configuration (5)................................................................................................................................8-13Table 8-8 Three typical topologies of the DRFUs.............................................................................................8-15Table 8-9 Typical configuration of the BTS3900/BTS3900A...........................................................................8-16Table 9-1 Functions of the BTS OM system........................................................................................................9-3Table 10-1 Operating frequency bands of the BTS3900/BTS3900A.................................................................10-2Table 10-2 Output power of the DRFU in the BTS3900/BTS3900A................................................................10-2Table 10-3 Receiver sensitivity of the BTS3900/BTS3900A............................................................................10-3Table 10-4 Dimensions.......................................................................................................................................10-3Table 10-5 Weight..............................................................................................................................................10-4Table 10-6 Specifications of the input power.....................................................................................................10-4Table 10-7 BTS3900A Power Consumption......................................................................................................10-4Table 10-8 Surge protection specifications of the BTS3900A...........................................................................10-5Table 10-9 Power ports of the BTS3900............................................................................................................10-6Table 10-10 BBU transmission ports.................................................................................................................10-6Table 10-11 DRFU transmission ports...............................................................................................................10-7Table 10-12 BTS3900A alarm ports..................................................................................................................10-7Table 10-13 Other external ports of the BTS3900A..........................................................................................10-7Table 10-14 Climatic requirements..................................................................................................................10-10Table 10-15 Requirements for the density of chemically active substances....................................................10-11Table 10-16 Requirements for mechanical stress.............................................................................................10-12Table 10-17 Climatic requirements..................................................................................................................10-12Table 10-18 Requirements for the density of mechanically active substances................................................10-14Table 10-19 Requirements for the density of chemically active substances....................................................10-14Table 10-20 Requirements for mechanical stress.............................................................................................10-14

BTS3900A GSMProduct Description Tables


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Table 10-21 Climatic requirements..................................................................................................................10-15Table 10-22 Requirements for the density of mechanically active substances................................................10-16Table 10-23 Requirements for the density of chemically active substances....................................................10-17Table 10-24 Requirements for mechanical stress.............................................................................................10-17

TablesBTS3900A GSM

Product Description

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

Issue 03 (2008-07-15)

About This Document

PurposeThis describes the overview of the BTS3900A GSM. It describes the components, software andhardware structure, subsystems, configuration type, signal flow, clock synchronization, andtopologies of the BTS3012. This document also lists the technical specifications of the capacity,RF, engineering, lightning protection, and physical ports of the BTS3900A.

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

Product Name Product Version

BTS3900A GSM (BTS3900 for shotafterwards)

V300R008

Intended AudienceThis document is intended for:

l Network planners

l Field engineers

l System engineers

Change HistoryFor changes in the document, refer to Changes in BTS3900A GSM Production Description.

Organization1 System Structure of the BTS3900A

This describes the BTS3900A. It consists of the BBU3900, the DRFU module, the powerdistribution box, and RF cabinet. The BBU3900 is installed in the power distribution box. TheDRFU module is installed in the RF cabinet.

2 Overview of the BTS3900A

This describes the physical structure, logical structure, and software structure of the BTS3900A.

BTS3900A GSMProduct Description About This Document


1

3 Power Distribution Modes of the BTS3900A

The BTS3900A allows the 220 V AC input.

4 Monitoring System of the BTS3900A

This describes the monitoring system of the BTS3900A. The monitoring system monitors thepower, fans, and environment.

5 Reference Clocks of the BTS3900/BTS3900A

The BTS3900/BTS3900A supports three types of reference clocks: line clock, BITS clock, andfree-run clock.

6 Signal Flow of the BTS3900/BTS3900A

The signal flow of the BTS3900/BTS3900A consists of the traffic signal flow and the signalingflow of the BTS. The BTS3900/BTS3900A signal flow is classified into the DL traffic signalflow, UL traffic signal flow, and signaling flow.

7 Topologies of the BTS

The BTS supports the star, chain, tree, and ring topologies. The BBU and DRFUs supportmultiple network topologies such as star, chain, and ring topologies. In practice, these topologiescan be combined. Optimum utilization of the topologies can improve the quality of service andsave the investment on the transmission equipment.

8 Configuration of the BTS3900/BTS3900A

This describes the configuration principles of the BTS3900/BTS3900A, RF cable connections,CPRI cable connections, and typical configurations of the DRFU.

9 OM System of the BTS

The OM system implements the management, monitoring, and maintenance tasks of theBTS3900. It provides various OM modes and multiple maintenance platforms to meet differentmaintenance requirements.

10 Technical Specifications of the BTS3900A

The technical specifications of the BTS3900A involve capacity specifications, RFspecifications, engineering specifications, surge protection specifications, physical ports,environmental requirements, and compliance standards.

Conventions

1. Symbol Conventions

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

Symbol Description

DANGERIndicates a hazard with a high level of risk that, if not avoided,will result in death or serious injury.

About This DocumentBTS3900A GSM

Product Description

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

Issue 03 (2008-07-15)

Symbol Description

WARNINGIndicates a hazard with a medium or low level of risk which, ifnot avoided, could result in minor or moderate injury.

CAUTIONIndicates a potentially hazardous situation that, if not avoided,could cause equipment damage, data loss, and performancedegradation, or unexpected results.

TIP Indicates a tip that may help you solve a problem or save yourtime.

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

2. General Conventions

Convention Description

Times New Roman Normal paragraphs are in Times New Roman.

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

Italic Book titles are in italics.

Courier New Terminal display is in Courier New.

3. Command Conventions


Boldface The keywords of a command line are in boldface.

Italic Command arguments are in italic.

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

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

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

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

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

4. GUI Conventions

BTS3900A GSMProduct Description About This Document


3


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

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

5. Keyboard Operation


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

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

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

6. Mouse Operation

Action Description

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

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

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

About This DocumentBTS3900A GSM

Product Description

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

Issue 03 (2008-07-15)

1 System Structure of the BTS3900A

This describes the BTS3900A. It consists of the BBU3900, the DRFU module, the powerdistribution box, and RF cabinet. The BBU3900 is installed in the power distribution box. TheDRFU module is installed in the RF cabinet.

Figure 1-1 shows the BTS3900A system.

Figure 1-1 BTS3900A system architecture

BBU

Power cabinet

RF cabinet

DRFU

The BTS3900A consists of the following modules:

BTS3900A GSMProduct Description 1 System Structure of the BTS3900A


1-1

l The BBU3900 is used for baseband processing and enables interaction between the BTSand the BSC.

l The DRFU, the double-transceiver filter unit, performs modulation and demodulationbetween baseband signals and RF signals, processes data, and combines and divides signals.

l The power distribution box and RF cabinet provides space for BBU3900 and DRFU andthe functions of power distribution, heat dissipation, and surge protection.

1 System Structure of the BTS3900ABTS3900A GSM

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2 Overview of the BTS3900A

About This Chapter

This describes the physical structure, logical structure, and software structure of the BTS3900A.

2.1 Marketing Orientation of the BTS3900AThis describes the BTS3900A, an outdoor macro base station developed by Huawei. TheBTS3900A mainly consists of the BBU and the DRFUs. Compared with traditional BTSs, theBTS3900A features simpler structure and higher integration.

2.2 Structure of the BTS3900A CabinetThe BTS3900A cabinet consists of the RF cabinet and the APM30 power cabinet. The RF cabinetis categorized into two types: 3RFU cabinet and 6RFU cabinet. For the BTS3900A, the APM30battery cabinet and APM30 transmission cabinet are optional. The battery cabinet provides long-time backup power, and the transmission cabinet can accommodate the transmission equipmentof the user.

2.3 Logical Structure of the BTS3900AThis describes the logical structure of the BTS3900A. It mainly consists of the BBU and DRFUs.The logical structure of the BTS3900A consists of the RF subsystem, control subsystem, powersubsystem, and antenna subsystem.

2.4 Software Structure of the BTSThe BTS software consists of the platform software, signaling protocol software, OM software,and data center. The latter three are application software, and the platform software providessupport for the application software.

BTS3900A GSMProduct Description 2 Overview of the BTS3900A


2-1

2.1 Marketing Orientation of the BTS3900AThis describes the BTS3900A, an outdoor macro base station developed by Huawei. TheBTS3900A mainly consists of the BBU and the DRFUs. Compared with traditional BTSs, theBTS3900A features simpler structure and higher integration.

The features of the BTS3900A are as follows:

l It is developed on the basis of the unified BTS platform for Huawei Wireless products andenables the smooth evolution from 2G to 3G.

l It supports the Abis IP/FE interface in hardware and enables Abis over IP through softwareupgrade if required.

l It shares the BBU subrack with the DBS3900 to minimize the number of spare parts andto reduce the cost.

l It can be flexibly installed in a small footprint and can be easily maintained with low cost.

l It supports multiple frequency bands, such as PGSM900, EGSM900, and DCS1800.

l It supports transmit diversity and PBT.

l It supports two-antenna or four-antenna receive diversity to improve the uplink coverage.

l It supports the GPRS and the EGPRS.

l It supports omnidirectional cells and directional cells.

l It supports the hierarchical cell, concentric cell, and micro cell.

l It supports multiple network topologies, such as star networking, tree networking, chainnetworking, ring networking, and hybrid networking.

l It supports the A5/3, A5/2, and A5/1 encryption and decryption algorithms.

l It supports the cell broadcast SMS and point-to-point SMS.

l It supports synchronization with the BTS3012.

l A single cabinet supports up to 12 TRXs with the maximum cell configuration of S4/4/4.

l Multiple cabinets at a site support up to 72 TRXs with the maximum cell configuration ofS24/24/24.

2.2 Structure of the BTS3900A CabinetThe BTS3900A cabinet consists of the RF cabinet and the APM30 power cabinet. The RF cabinetis categorized into two types: 3RFU cabinet and 6RFU cabinet. For the BTS3900A, the APM30battery cabinet and APM30 transmission cabinet are optional. The battery cabinet provides long-time backup power, and the transmission cabinet can accommodate the transmission equipmentof the user.

The components of the BTS3900A include the DRFU, BBU, DCDU-02, FMUA, FAN unit, andGATM, among which the GATM is optional.

Figure 2-1 shows the typical configuration of a BTS3900A cabinet that consists of a 6RFUcabinet and an APM30 power cabinet.

2 Overview of the BTS3900ABTS3900A GSM

Product Description


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Figure 2-1 Typical configuration of a BTS3900A cabinet (1)

(1) 6RFU cabinet (2) DRFU module (3) FAN unit

(4) FMUA module (5) DCDU-02 module (6) GATM module

(7) BBU (8) PDU (9) Power subrack (AC/DC)

(10) APM30 power cabinet - -

Figure 2-2 shows the typical configuration of a BTS3900A cabinet that consists of a 3RFUcabinet and an APM30 power cabinet.



2-3


(1) Battery (2) 3RFU cabinet (3) DRFU module

(4) FAN unit (5) FMUA module (6) DCDU-02 module

(7) GATM module (8) BBU (9) PDU

(10) Power subrack (AC/DC) (11) APM30 power cabinet -

Figure 2-3 shows the typical configuration of a BTS3900A cabinet that consists of a 3RFUcabinet, a 6RFU cabinet, and an APM30 power cabinet.


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2

311

12

5

4

1

6

7

9

8

10




(10) APM30 power cabinet (11) Battery (12) 3RFU cabinet

Figure 2-4 shows the typical configuration of a BTS3900A cabinet that consists of a 6RFUcabinet, an APM30 power cabinet, an APM30 transmission cabinet, and an APM30 batterycabinet.



2-5





(10) APM30 power cabinet (11) DCDU-03A module (12) Transmission unit

(13) APM30 transmission cabinet (14) Battery (15) APM30 battery cabinet

NOTE

For details about the configurations of the APM30 power cabinet, APM30 transmission cabinet, andAPM30 power cabinet, see the APM30 User Guide.


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2.3 Logical Structure of the BTS3900AThis describes the logical structure of the BTS3900A. It mainly consists of the BBU and DRFUs.The logical structure of the BTS3900A consists of the RF subsystem, control subsystem, powersubsystem, and antenna subsystem.

Figure 2-5 shows the logical structure of the BTS3900A.

Figure 2-5 Logical Structure of the BTS3900A

Antenna subsystemControl subsystem

GATM

Power subsystem

CPRIRF

signals

RF signalsCPRI

TMA

TMA

MS

RF subsystem

…

DRFU

DRFU

BSCE1

BBU

E1

…

DCDU-02DCDU-03A PDU 220V AC

Battery Power subrack(AC/DC)

220V AC-48V DC

Bias-Tee

Bias-TeeOptical transmission

device

The logical subsystems of the BTS3900A are as follows:

l RF subsystem whose functions are implemented by the DRFU

l Control subsystem whose functions are implemented by the BBU

l Power subsystem whose functions are implemented by the following modules:– PDU

– Power Subrack (AC/DC)– DCDU-02– DCDU-03A– Battery

l Antenna subsystem whose functions are implemented by the following modules:



2-7

– GATM

– TMA

– Antennas

2.4 Software Structure of the BTSThe BTS software consists of the platform software, signaling protocol software, OM software,and data center. The latter three are application software, and the platform software providessupport for the application software.

Figure 2-6 shows the software structure of the BTS.

Figure 2-6 Software structure of the BTS

Data center

Signalingprotocol software OM software

Platform software

Platform Software

The platform software provides support for the signaling protocol software, OM software, anddata center. The functions of the platform software are as follows:

l Timing management

l Task management

l Memory management

l Module management

l Managing the loading and running of the application software

l Providing the message forwarding mechanism between modules

l Tracing massages between modules to facilitate troubleshooting

Signaling Protocol Software

The functions of the signaling protocol software are as follows:

l Processing the radio network layer protocol

l Processing the transport network layer protocol, which performs transport dataconfiguration, ALCAP processing, and SAAL processing


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l Managing the internal logical resources (such as cells and channels) of the BTS and themapping between physical resources and logical resources

OM SoftwareThe OM software works together with the maintenance terminals such as the LMT to maintainthe BTS. The functions of the OM 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

Data CenterThe data center stores the configuration data of all the modules.



2-9

3 Power Distribution Modes of the BTS3900A

The BTS3900A allows the 220 V AC input.

Figure 3-1 shows the power distribution of the BTS3900A.

Figure 3-1 Power distribution of the BTS3900A

BTS3036A power system

220V AC

-48V DC

DRFU3-5

PDU

Power subrack(AC/DC)

DRFU0-2

FMUA

GATMBBU

Battery

AFMU

220V AC

-48V DCDCDU-03A

DCDU-02

DCDU-02

The description of the power distribution is as follows:

BTS3900A GSMProduct Description 3 Power Distribution Modes of the BTS3900A


3-1

l When the external 220 V AC is used, the PDU leads the 220 V AC into the PSU (AC/DC)in the power subrack (AC/DC). The PSU converts the 220 V AC to -48 V DC, and thentransmits the converted DC back to the PDU.

l The PDU distributes the -48 V DC. Part of the -48 V DC is directly distributed to certainmodules. Part of the -48 V DC is distributed to the DCDU-02. The DCDU-02 thendistributes the -48 V DC to certain modules.

l When the APM30 transmission cabinet is configured, the PDU leads the -48 V DC to theDCDU-03A in the transmission cabinet. The DCDU-03A then distributes the -48 V DC tocertain modules.

l The power subrack (AC/DC) performs the charging and discharging of the batteries.

3 Power Distribution Modes of the BTS3900ABTS3900A GSM

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4 Monitoring System of the BTS3900A

This describes the monitoring system of the BTS3900A. The monitoring system monitors thepower, fans, and environment.

Description of Monitoring PortsFigure 4-1 shows the monitoring ports of the BBU.

Figure 4-1 Monitoring ports of the BBU

GTMU

ETH FE0 FE1

CPRI0 CPR12 CPR14

CPR13CPR11 CPR15TX RX

TX0 RX0 TX1 RX1 TX2 RX2 TX3 RX3 TX4 RX4 TX5 RX5 LIU0LIU1

LIU2LIU3

USBTEST E1/T1 RST

RUNALMACT

1 2 3 4 5

INSIDE OUTSIDE

UELP

EXT-ALM1 EXT-ALM0 MON1 MON0

PWR

EXT-ALM1 EX T-ALM0 MON1 MON0

RUN

Alarm signal 0 to 3

Monitoring signal bus 0Monitoring signal bus 1

Alarm signal 4 to 7

Alarm signal 12 to 15Alarm signal 8 to 11

Monitoring signal bus 0Monitoring signal bus 1

l The BBU can provides up to two RS485 bus ports and 16 Boolean inputs.

l The modules on the RS485 bus 0 cannot substitute those on the RS485 bus 1.

l If two MPUs with the same DIP switch setting are configured, they cannot be installed onthe same bus.

Components of the Monitoring SystemFigure 4-2 shows the components of the BTS3900A system.

BTS3900A GSMProduct Description 4 Monitoring System of the BTS3900A


4-1

Figure 4-2 Structure of the monitoring system

BBU

RS485 bus0

RS485 bus1

Boolean0-15

PMUEMUA

DCDU-02 1

BSC

GATM2 FMUA1

AFMU1 GATM1

DCDU-02 2

Door sensor of the power cabinet

Door sensor of the battery cabinet

Door sensor of thetransmission cabinet

FAN1 FAN2

FMUA2 ……

AFMU2DCDU-03A User interface

NOTE

bus0 is the RS485 bus 0; bus1 is the RS485 bus 1.

Table 4-1 describes the monitoring signals of the BTS3900A.

Table 4-1 Monitoring signals of the BTS3900A

Unit Address

FMUA (mandatory) bus0

GATM2 (optional) bus0

PMU (mandatory) bus1

AFMU (mandatory) bus1

GATM1 (optional) bus1

FMUA (optional) bus1

Functions of the Monitoring System

Table 4-2 shows the components of the monitoring system.

Table 4-2 Functions of the Monitoring System

Unit Control

FAN l Fan failure monitoring

l Adjust the fan speed

l Temperature and fan speed monitoring

GATM Reports the RET control alarm signals.

4 Monitoring System of the BTS3900ABTS3900A GSM

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Unit Control

EMUA l Communicates with the central processingunit through the two RS485 ports

l Input voltage monitoring

l Provides independent 12 V DC/24 V DCtemperature and humidity sensor ports.

l Provides Boolean input signal monitoringports, and connects to the Booleanmonitoring signals in dry contact mode orOC mode.

l Provides six external Boolean outputcontrol ports in relay node mode.

PMU l Communicates with the central processingunit through the RS232/RS422 serial port.

l Manages the power system and chargingand discharging of batteries.

l It reports water alarms, smokes alarms,door control alarms, standby Booleanalarms, ambient humidity andtemperature, battery temperature, andstandby analog values.

l Power distribution monitoring and alarmreporting

DCDU-02 Provides the monitoring of surge protectionfailure

FMUA l Collecting environment alarm informationin the cabinet. The environment alarm isclassified into temperature alarm,humidity alarm, smoke alarm, waterimmersion alarm, and door status alarm.

l Collects surge protection alarminformation of the DC power distributionunit.

l Monitors the operating status of fans. Thefan speed can be adjusted based on thetemperature or adjusted by the centralprocessing unit.

l Stops the rotation of the fans when theambient temperature is low.

l Temperature monitoring and reporting

l RS485 port cascading and extension

l The FMUAs can be cascaded.

BTS3900A GSMProduct Description 4 Monitoring System of the BTS3900A


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5 Reference Clocks of the BTS3900/BTS3900A

The BTS3900/BTS3900A supports three types of reference clocks: line clock, BITS clock, andfree-run clock.

Line ClockThe BBU3900 directly extracts clock signals from the E1/T1 interface. Then, the BBU exportsthe precise 2 MHz and 8 kHz clocks after frequency dividing, phase locking, and phase adjusting.The 2 MHz and 8 kHz clocks are used for frame synchronization and bit synchronization in theBTS3900/BTS3900A.

BITS ClockThe BBU3900 supports the BITS clock mode by providing a port for the 2.048 MHz BITS clock.

Free-Run ClockWhen the external reference clocks are unavailable, the oven controlled crystal oscillator(OCXO) on the GTMU of the BBU3900 provides the 13 MHz clock to ensure the normaloperation of the BTS.

BTS3900A GSMProduct Description 5 Reference Clocks of the BTS3900/BTS3900A


5-1

6 Signal Flow of the BTS3900/BTS3900A

The signal flow of the BTS3900/BTS3900A consists of the traffic signal flow and the signalingflow of the BTS. The BTS3900/BTS3900A signal flow is classified into the DL traffic signalflow, UL traffic signal flow, and signaling flow.

DL Traffic Signal Flow

The DL traffic signal flow is transmitted from the BSC to the MS through the BTS3900/BTS3900A. In the BTS3900/BTS3900A, the BBU and DRFUs work together to process the DLtraffic signals. Figure 6-1 shows the DL traffic signal flow of the BTS3900/BTS3900A.

Figure 6-1 DL traffic signal flow

DBUSCBUS

FHBUS

3

…

32

DRFU

DRFU

DRFU

BBU MS1

RF signals

3

CPRIE1

BSC

Downlink traffic signal flow

RF signals

RF signals

The DL traffic signal flow is as follows:

1. The BSC sends E1 signals to the BBU through E1 or optical cables.

2. After receiving the E1 signals, the BBU processes the E1 signals as follows:

(1) Extracts clock signals from the E1 signals

(2) Configures the BTS system based on the data configuration on the OML

(3) Encapsulates the E1 data in the format of the CPRI frame, and then transmits the datato the DRFU through the CPRI signal cable

3. After receiving the signals, the DRFU processes the signals as follows:

BTS3900A GSMProduct Description 6 Signal Flow of the BTS3900/BTS3900A


6-1

(1) Decapsulates the high-speed CPRI frames to obtain the baseband signals

(2) Transmits the baseband signals to the relevant operation units for encapsulation andinterleaving

(3) Converts the digital signals into the analog signals and modulates the analog signalsinto RF signals

(4) Combines or divides the RF signals based on its own configuration

(5) Transmits the combined or divided signals to the antenna subsystem

UL Traffic Signal Flow

Opposite to the DL traffic signal flow, the UL traffic signal flow is transmitted from the MS tothe BSC through the BTS3900/BTS3900A. In the BTS3900/BTS3900A, the BBU and DRFUswork together to process the UL traffic signals. Figure 6-2 shows the UL traffic signal flow.

Figure 6-2 UL traffic signal flow

DBUSCBUS

FHBUS

3

…

32

DRFU

DRFU

DRFU

BBU MS1

RF signals

3

CPRIE1

BSC

Uplink traffic signal flow

RF signals

RF signals

The UL traffic signal flow is as follows:

1. The antenna receives the signals sent from the MS. If the TMA is configured, the receivedsignals are amplified by the TMA and then transmitted to the DRFU through the feeder.

2. After receiving the UL signals, the DRFU processes the signals as follows:

(1) Divides the UL signals received from the antenna, Rx1 in, or Rx2 in

(2) Converts the divided analog signals into the digital signals to obtain the basebandsignals

(3) Transmits the baseband signals to the relevant operation units for decryption and de-interleaving

(4) Encapsulates the processed data in the format of the CPRI frame, and then transmitsthe data to the BBU through the CPRI signal cable

3. After receiving the signals, the BBU processes the signals as follows:

(1) Decapsulates the high-speed CPRI frames to obtain the baseband signals

(2) Encapsulates the baseband signals in the format of the E1 frame, and then transmitsthe signals to the BSC through the E1 cable or the optical cable

6 Signal Flow of the BTS3900/BTS3900ABTS3900A GSM

Product Description


Issue 03 (2008-07-15)

Signaling FlowThis describes the BTS3900/BTS3900A signaling flow on the Abis interface. The BBU servesas the control unit and works with DRFU to process the signaling. Figure 6-3 shows the signalingflow.

Figure 6-3 Signaling flow

…

DRFU

DRFU

DRFU

BBUE1

BSC

DBUSCBUS

FHBUS2 CPRI

Signaling flow

1

The signaling flow is as follows:

1. The signaling data received from the BSC is transmitted to the BBU through the Abisinterface.

2. The BBU encapsulates the signaling data in the format of the CPRI frame, and thentransmits the signaling data to the DRFU through the CPRI signal cable.

3. The DRFU decapsulates the CPRI signals into the baseband signals, transmits the basebandsignals to the relevant operation units for processing.

4. The BBU encapsulates the data of its own status in the format of the CPRI frame, and thentransmits the data to the DRFU through the CPRI signal cable.

5. The BBU decapsulates the received CPRI signals to obtain the baseband signals.6. The BBU obtains the status of the BTS by analyzing the baseband signals. Then, the BBU

transmits the information on the BTS status to the BSC through the Abis interface.

BTS3900A GSMProduct Description 6 Signal Flow of the BTS3900/BTS3900A


6-3

7 Topologies of the BTS

The BTS supports the star, chain, tree, and ring topologies. The BBU and DRFUs supportmultiple network topologies such as star, chain, and ring topologies. In practice, these topologiescan be combined. Optimum utilization of the topologies can improve the quality of service andsave the investment on the transmission equipment.

Network TopologyFigure 7-1 shows the star topology of the BTS.

Figure 7-1 Star topology of the BTS

BSC

BTS

BTS

BTS

Figure 7-2 shows the chain topology of the BTS.

Figure 7-2 Chain topology of the BTS

BSC BTS BTS BTS

Figure 7-3 shows the tree topology of the BTS.

BTS3900A GSMProduct Description 7 Topologies of the BTS


7-1

Figure 7-3 Tree topology of the BTS

BSC

BTS

BTS

BTS

BTS

Figure 7-4 shows the ring topology of the BTS.

Figure 7-4 Ring topology of the BTS

BSCBTS0 BTS1 BTS2

A B C

D

Comparison of Network TopologiesTable 7-1 describes the comparison of different network topologies.

7 Topologies of the BTSBTS3900A GSM

Product Description


Issue 03 (2008-07-15)

Table 7-1 Comparison of Network Topologies

Networking Mode ApplicationScenario

Advantage Limitations

Star topology Applies to commonareas, especiallydensely populatedareas, such as cities.

l Simplenetworking

l Easy projectimplementation

l Convenientmaintenance

l Flexible capacityexpansion

l High networkreliability

Compared with othertopologies, the startopology requiresmore transmissioncables.

Chain topology Applies to sparselypopulated areas instrip-like terrain,such as areas alonghighways andrailway tracks.

Reduces costs intransmissionequipment,construction, andtransmission linklease.

l As signals passthrough manynodes, thetransmissionreliability in thechain topology isreduced.

l The faults in thecurrent-levelBTSs may affectthe lower-levelBTSs.

l The number oflevels in a chainnetwork shouldnot exceed five.



7-3



Tree topology Applies to areaswhere networkstructures, sitedistribution, andsubscriberdistribution arecomplicated, forexample, an areawhere large-scalecoverage overlapshot spot or small-scale coverage.

Requires fewertransmission cablescompared with thestar topology.

l As signals passthrough manynodes, thetransmissionreliability isreduced. Thismakes it difficultfor maintenanceand engineering.

l The faults in thecurrent-levelBTSs may affectthe lower-levelBTSs.

l Capacityexpansion isdifficult.

l The number oflevels in the treeshould not exceedfive.

7 Topologies of the BTSBTS3900A GSM

Product Description


Issue 03 (2008-07-15)



Ring topology Applies to commonscenarios. Due to itsstrong self-healingcapability, the ringtopology is preferredif permitted by therouting.

If there is a breakingpoint in the ring, thering breaks into twochains at thebreaking pointautomatically. In thisway, the BTSspreceding andfollowing thebreaking point canwork normallydespite the breakingpoint; thusimproving therobustness of thesystem. For example,BTS0, BTS1, andBTS2 aresequentiallyconnected to form aring. When B fails,the BTS topologypreceding B remainsunchanged, and theBTSs following Bform a chain(anticlockwise), asshown in Figure7-5.

In the ring topology,there is always a linksection that does nottransfer data.

Figure 7-5 Regroupment for disconnection in the ring topology

BSCBTS0

A

B

CD

BTS2 BTS1

Clockwise

Anticlockwise



7-5

8 Configuration of the BTS3900/BTS3900A

About This Chapter

This describes the configuration principles of the BTS3900/BTS3900A, RF cable connections,CPRI cable connections, and typical configurations of the DRFU.

8.1 Configuration Principles of the BTS3900/BTS3900AThe BTS3900/BTS3900A uses DRFU transceiver module and DRFU built-in duplexer. A singlecabinet provides up to 12 TRXs with the maximum cell configuration of S4/4/4 and supportsthe dual-band application. In the BTS3900/BTS3900A, the antenna subsystem, DRFUs, andBBU need to be configured.

8.2 RF Signal Cable Connections of the DRFUOne end of the RF jumper is connected to the RF port on the DRFU and the other end is connectedto the feeder. You can determine the appropriate RF ports based on the actual configurationmodes.

8.3 Topology of DRFUs Connected by CPRI CablesThe DRFUs support various network topologies: star, chain, and ring.

8.4 Typical Configuration of the BTS3900/BTS3900AThis lists the number of components required for the cell configuration of S1/1/1, S2/2/2, S4/4/4,S6/6/6, S1/1/1 + S3/3/3, S2/2/2 + S2/2/2, and S4/4/4 + S4/4/4.

BTS3900A GSMProduct Description 8 Configuration of the BTS3900/BTS3900A


8-1

8.1 Configuration Principles of the BTS3900/BTS3900AThe BTS3900/BTS3900A uses DRFU transceiver module and DRFU built-in duplexer. A singlecabinet provides up to 12 TRXs with the maximum cell configuration of S4/4/4 and supportsthe dual-band application. In the BTS3900/BTS3900A, the antenna subsystem, DRFUs, andBBU need to be configured.

Basic Configuration Principlesl Smooth upgrade of configuration. If multiple types of hardware configurations meet the

requirements for configuring the parameters in network planning, the configuration modethat implements the smooth upgrade is preferred.

l The BTS3900/BTS3900A solution is recommended in S4/4/4 cell configuration or lowerconfigurations. When multiple antennas are permitted, the BTS3900/BTS3900A solutioncan be applied in S8/8/8 and S4/4/4+S4/4/4 dual-band cell configurations.

l Wide coverage. The DRFU supports wide coverage. The DRFU can work in PBT, transmitdiversity, or 4-way receive diversity mode in configurations lower than S2.

Antenna Configuration Principlesl One antenna can serve up to two DRFUs to support the S4/4/4 configuration.

l By default, the receive diversity is adopted in the GSM. That is, two feeder (two singleantennas or one dual-polarized antenna) must be configured in a cell.

l When one internal combination is allowed, the cell configuration of S4 and lowerconfigurations use a single antenna, the configurations of S5 to S8 use a double antenna,and the configurations of S8 to S12 use a triple antenna.

l Each sector of the BTS must be configured with the minimum number of antennas.

l For the 2-antenna receive diversity, each sector has two antenna channels; for the 4-antennareceive diversity, each sector has four antenna channels.

RF Configuration PrinciplesTable 8-1 describes the RF configuration principles of the BTS3900/BTS3900A.

8 Configuration of the BTS3900/BTS3900ABTS3900A GSM

Product Description


Issue 03 (2008-07-15)

Table 8-1 RF configuration principles of the BTS3900/BTS3900A

Principle Description Example

Configuration principles ofthe DRFU ports

l ANT1 and ANT2 are theTX ports of the duplexer.They are connected tojumpers.

l Rx1 in, Rx1 out, Rx2 in,and Rx2 out are used forthe interconnectionbetween the DRFUmodules. When the twoTRXs provided by theDRFU belong to the samecell, both Rx1 in and Rx2in can be the input ports forreceive diversity of thetwo TRXs. When the twoTRXs provided by theDRFU belong to differentcells, Rx1 in is the inputport for RX diversity ofTRX 1; Rx2 in is the inputport for receive diversityof TRX 2.

l CPRI_0 and CPRI_1 arethe ports for high speedsignal cables. They areconnected to CPRI portson the BBU.

In the S3/3 configuration,three DRFUs need to beconfigured. The TRXsprovided by the middleDRFU belong to differentcells. Then, the Rx1 in port onthe middle DRFU is the inputport, which belongs to thefirst cell, for receive diversityof TRX 1. The input port forRX main diversity of TRX 2is ANT1. The Rx2 in port isthe input port, which belongsto the second cell, for receivediversity of TRX 2. The inputport for RX main diversity ofTRX 2 is ANT2.

Configuration principles of asingle cabinet

l Star topology is adoptedbetween the BBU andDRFUs. The DRFUs andthe high-speed interfaceson the BBU have a one-to-one mapping relationship.That is, if DRFU slot 1 isidle, CPRI port 1 on theBBU is also idle.

l A single cabinet supportsthe maximum cellconfiguration of S4/4/4.

None



8-3


Configuration principles ofmultiple cabinets

l When star and ringtopologies are adoptedbetween the BBU andDRFUs, three levels ofDRFUs in a ring can beconnected to one BBU.That is, one BBU supports3 x 3 = 9 DRFUs.

l When star and chaintopologies are adoptedbetween the BBU andDRFUs, three levels ofDRFUs on a chain can beconnected to one BBU.That is, one BBU supports6 x 3 = 18 DRFUs.

None

Non-combination in thetransmit channel

l The non-combinationconfiguration isrecommended for theDRFU to avoid the powerloss in combination and toreduce the powerconsumption of the BTS.

l If combination is required,the cavity combiner mustbe configured outside theDRFU and onecombination isrecommended.

None

Configuring two TRXs inone sector

l A single DRFU does notsupport the S1/1application; however,three DRFUs support theS3/3 application.

l When the DRFU works intransmit PBT, transmitdiversity, or 4-way receivediversity mode, a DRFUprovides only one TRX.Therefore, the actualconfiguration does notinvolve the mode ofconfiguring two TRXs inone sector.

For example, for a site inS5/4/7 cell configuration,nine DRFUs are installedmeeting the requirements ofS6/4/8 cell configuration butdata is still configured inS5/4/7 cell configuration.


Product Description


Issue 03 (2008-07-15)


Number of DRFUs l When the number of TRXsof the site is less than 12,an odd number of TRXscan be configured for acell. Number of DRFUs =round up [(Number ofTRXs + Number of S1cells) ÷ 2]

l When the number of TRXsof the site is greater than12, two TRXs should beconfigured for a cell.Number of DRFUs =round up (Number ofTRXs after two TRXs areconfigured in one sector ÷2)

l S3/3/3: Number ofDRFUs = round up (9 ÷ 2)= 5; S1/2/3: Number ofDRFUs = round up [(6 + 1)÷ 2] = 4.

l After two TRXs areconfigured in one sector,the S5/5/5 configuration isS6/6/6. Number of DRFUs= (6 + 6 + 6) ÷ 2 = 9.

TRX allocation in doubleantenna mode

After TRX allocation, thecells with the odd number ofTRXs are adjacent cells.l S5 = S3 + S2 or S5 = S2 +

S3l S6 = S4 + S2 or S6 = S3 +

S3l S7 = S4 + S3 or S7 = S3 +

S4l S8 = S4 + S4

l In S3/5/4, S5 can bedivided into S3 + S2.Then, the cellconfiguration is S3/(3/2)/4.

l In S2/5/5, the first S5 isdivided into S2 + S3; thesecond S5 is divided intoS3 + S2. Then, the cellconfiguration is S2/(2/3)/(3/2).



8-5


Configuring double TRXs ina site

l If the number of DRFUs isless than or equal to 6 in adouble-TRX site, the twoTRXs are configured inthe same cabinet. If thenumber of DRFUs of thetwo bands is less than 3,the 900 MHz DRFUs areinstalled in the 3 slots onthe left, and the 1800 MHzDRFUs are installed in the3 slots on the right.

l When two RF cabinets areconfigured and thenumber of DRFUs of eachband is less than 6, the 900MHz DRFUs are installedin the first cabinet and the1800 MHz DRFUs areinstalled in the secondcabinet. The DRFUs areinstalled in the slotsaccording to the typicalS4/4/4 configuration.When two RF cabinets areconfigured and thenumber of DRFUs of oneband is greater than 6, theband with fewer DRFUsshares the cabinet with theother band. Mixedconfiguration of DRFUsare not allowed.

None

NOTE

In the mode of configuring two TRXs in one sector, a DRFU belongs to only one sector.

Configuration Principles of the BBUl One BBU provides six CPRI ports. In the chain topology, a single BBU can support up to

36 TRXs.l Figure 8-1 shows the BBU slots.


Product Description


Issue 03 (2008-07-15)

Figure 8-1 Slots of the BBU012

56

FANUPEU/UEIU

UPEU3

4

7

l Table 8-2 describes the RF configuration principles of the BBU.

Table 8-2 Configuration principles of BBU boards

Board or Module Description

BSBC 1 pcs must be configured.

UBFA 1 pcs must be configured.

UPEU l 1 pcs must be configured.

l 1 pcs can be configured when the backuppower is required. The UPEU, however,cannot be configured with the UEIU atthe same time.

UEIU l 1 pcs must be configured when three ormore than three BTS3900 cabinets areconfigured.

l In the outdoor application, 1 pcs must beconfigured when two or more than twoAPM30 power cabinets are configured.

GTMU l 1 pcs must be configured.

l The GTMU occupies slot 5 and slot 6.

UELP l Not required in the BTS3900

l 1 pcs must be configured in theBTS3900A. The UELP occupies slot 0.

8.2 RF Signal Cable Connections of the DRFUOne end of the RF jumper is connected to the RF port on the DRFU and the other end is connectedto the feeder. You can determine the appropriate RF ports based on the actual configurationmodes.

RF Cable Connections of the DRFUl The transmit mode and antenna mode described in the following list are set on the BSC

side.l The RF cables differ from each other in colors. Figure 8-2 shows the mapping between the

RF signal cables and their colors.



8-7

Figure 8-2 Mapping between the RF signal cables and their colors

RF jumper between the cascaded DRFUs

Feeder jumperCPRI signal cable


Product Description


Issue 03 (2008-07-15)

S1 Without Transmit Diversity, S1 with Transmit Diversity, and S2 WithoutTransmit Diversity

The S1 without transmit diversity, S1 with transmit diversity, and S2 without transmit diversityuse the configuration of one DRFU and one dual-polarized antenna. Table 8-3 describes therelated configurations.

Table 8-3 Configuration (1)

TypicalConfigurationMode

Transmit Mode Antenna Mode CableConfiguration

S1 without transmitdiversity

Transmitindependency orcombining

Double Antenna l One DRFUmodule

l One dual-polarized antennaS1 with transmit

diversityTransmit diversity Double Antenna



Double Antenna

Figure 8-3 shows the cable connections.

Figure 8-3 Connections of RF cables for S1 (without transmit diversity/with transmit diversity)/S2 (without transmit diversity)

INSIDE OUTSIDE

UELP

Antenna



8-9

S2 with PBT, S3 Without Transmit Diversity, and S4 Without Transmit DiversityThe S2 with PBT, S3 without transmit diversity, and S4 without transmit diversity use theconfiguration of two DRFUs and one dual-polarized antenna. Table 8-4 describes the relatedconfigurations.




S2 with PBT PBT Single AntennaDouble Receiver

l Two DRFUsl One dual-

polarized antennaS3 without transmitdiversity


Single AntennaDouble Receiver





Figure 8-4 Connections of RF cables for S2 (PBT)/S3 (without transmit diversity)/S4 (withouttransmit diversity)

Antenna

INSIDE OUTSIDE

UELP


Product Description


Issue 03 (2008-07-15)

S2 (4-Way Receive Diversity)The S2 with 4-way receive diversity uses the configuration of two DRFUs and two dual-polarized antennas. The related configuration is as follows:

l Receive mode: 4-Way Receive Diversityl Set the antenna mode to Double Antenna 4-Way Receiver.


Figure 8-5 Connections of RF signal cables for S2 (4-way receive diversity)

Antenna Antenna

INSIDE OUTSIDE

UELP

S2 with Transmit Diversity and S4 with Transmit IndependencyThe S2 with transmit diversity and S4 with transmit independency use the configuration of twoDRFUs and two dual-polarized antennas. Table 8-5 describes the related configurations.




S2 (with transmitdiversity)

Transmit diversity Double Antenna l Two DRFUsl Two dual-

polarizedantennas

S4 with transmitindependency


Double Antenna




8-11

Figure 8-6 Connections of RF cables for S2 (transmit diversity)/S4 (transmit independency)

INSIDE OUTSIDE

UELP

Antenna Antenna

S5 Without Transmit Diversity and S6 Without Transmit DiversityThe S5 without transmit diversity and S6 without transmit diversity use the configuration ofthree DRFUs and two dual-polarized antennas. Table 8-6 describes the related configurations.






l DRFU0: SingleAntenna DoubleReceiver


l DRFU2: DoubleAntenna

l Three DRFUs

l Two dual-polarizedantennas





l DRFU2: DoubleAntenna


Product Description


Issue 03 (2008-07-15)


Figure 8-7 Connections of RF cables for S5 (without transmit diversity)/S6 (without transmitdiversity)

INSIDE OUTSIDE

UELP

Antenna Antenna

S7 Without Transmit Diversity and S8 Without Transmit DiversityThe S7 without transmit diversity and S8 without transmit diversity use the configuration of fourDRFUs and two dual-polarized antennas. Table 8-7 describes the related configurations.







l Four DRFUsl Two dual-

polarizedantennasS8 without transmit

diversityTransmitindependency orcombining





8-13

Figure 8-8 Connections of RF cables for S7 (without transmit diversity)/S8 (without transmitdiversity)

INSIDE OUTSIDE

UELP

Antenna Antenna

8.3 Topology of DRFUs Connected by CPRI CablesThe DRFUs support various network topologies: star, chain, and ring.

Figure 8-9 shows the typical topology of the DRFUs.


Product Description


Issue 03 (2008-07-15)

Figure 8-9 Typical topology of the DRFUs

INSIDE OUTSIDE

UELP

Star connection Ring connection

Chain connection

NOTE

When the chain topology is used, a maximum of three levels of DRFUs can be connected to one BBU.

Table 8-8 describes the three typical topologies of the DRFUs.

Table 8-8 Three typical topologies of the DRFUs

Topology Advantage Disadvantage

Star l Simple networking

l Easy projectimplementation

l Convenient maintenance

l Flexible capacityexpansion

l High network reliability

Compared with othertopologies, the star topologyrequires more transmissioncables.

Chain Supports the maximumconfiguration

l Low network reliability

l Requires a large quantityof transmission cables



8-15

Topology Advantage Disadvantage

Ring High network reliability Complicated networkstructure

8.4 Typical Configuration of the BTS3900/BTS3900AThis lists the number of components required for the cell configuration of S1/1/1, S2/2/2, S4/4/4,S6/6/6, S1/1/1 + S3/3/3, S2/2/2 + S2/2/2, and S4/4/4 + S4/4/4.

Table 8-9 lists the typical configuration of the BTS3900/BTS3900A.

Table 8-9 Typical configuration of the BTS3900/BTS3900A

TypicalConfiguration

Number ofDRFUs

Number ofAntennas

Number of OtherComponents ofthe BTS3900

Number of OtherComponents ofthe BTS3900A

S1/1/1 3 3 l BTS3900cabinet: 1

l FAN: 1l DCDU-01: 1l BBU: 1l Power subrack

(DC/DC): 1 (+24V DC input)

l Power subrack(AC/DC): 1 (220V AC input)

l GATM: optional

l APM30 powercabinet: 1

l Power subrack(AC/DC): 1

l PDU: 1l BBU: 1l GATM: optionall RF cabinet: 1l FMUA: 1l DCDU-02: 2l FAN: 2

S2/2/2 3 3

S4/4/4 6 3

S2/2/2 +S2/2/2

6 6

S6/6/6 9 6 l BTS3900cabinet: 2

l FAN: 2l DCDU-01: 2l BBU: 1l Power subrack

(DC/DC): 1 (+24V DC input)

l Power subrack(AC/DC): 1 (220V AC input)

l GATM: optional

l APM30 powercabinet: 1

l Power subrack(AC/DC): 1

l PDU: 1l BBU: 1l GATM: optionall RF cabinet: 2l FMUA: 2l DCDU-02: 4l FAN: 4

S1/1/1 +S3/3/3

8 6

S4/4/4 +S4/4/4

12 6


Product Description


Issue 03 (2008-07-15)

NOTE

The number of antennas in a dual-band network is applicable to the configuration that the two bands donot share the antennas. When the two bands share the antennas, the number of antennas in the dual-bandnetwork is calculated in the same way as that in the single-band network.



8-17

9 OM System of the BTS

About This Chapter

The OM system implements the management, monitoring, and maintenance tasks of theBTS3900. It provides various OM modes and multiple maintenance platforms to meet differentmaintenance requirements.

9.1 OM Modes of the BTSThe OM modes of the BTS consist of the Site Maintenance Terminal mode, Local MaintenanceTerminal mode, and centralized network management mode.

9.2 OM Functions of the BTSThe OM functions of the BTS3900 consist of equipment management, software management,configuration management, service management, performance management, securitymanagement, alarm management, and environment monitoring.

BTS3900A GSMProduct Description 9 OM System of the BTS


9-1

9.1 OM Modes of the BTSThe OM modes of the BTS consist of the Site Maintenance Terminal mode, Local MaintenanceTerminal mode, and centralized network management mode.

Figure 9-1 shows the components of the BTS OM system.

Figure 9-1 Network structure of the OM system

Site MaintenanceTerminal

BSC

VLAN

iManager M2000

LMT

BTS

BTSSite MaintenanceTerminal

You can maintain the BTS3900 in the following modes:

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

l LMT mode: The LMT is used to maintain the BTS through the OM links on the Abisinterface, which is an interface between the BSC and the BTS. The LMT communicateswith 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 in configuring and modifying the data of theBSC and BTS.

l Centralized network management mode: The Huawei iManager M2000 is used to maintainthe 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.

Table 9-1 lists the functions of the BTS OM system.

9 OM System of the BTSBTS3900A GSM

Product Description


Issue 03 (2008-07-15)

Table 9-1 Functions of the BTS OM system

MaintenanceObject

MaintenanceItems for the SiteMaintenanceTerminal

Maintenance Items forthe LMT

MaintenanceItems for theM2000

Maintainingsites

Viewing resourcesPerforming siteOpstartTesting the RFspecificationsProviding sitemanagement rightsForcibly loadingsoftwareActivating softwareResetting a sitehierarchicallyTesting sitesMonitoringenvironmentTesting transportperformanceQuerying the ringtopologyparametersQuerying the barcodesQuerying alarmdelay timeManaging the siteboard parametersProviding theopticaltransmission boardcommand consoleTesting the E1 BERManaging the RETantenna

Downloading the BTSsoftware

Configuring the BTSsoftware

Loading the BTS software

Activating BTS software

Querying BTS runningstatus

Querying BTS attributes

Resetting BTSshierarchically

Browsing the BTSinitialization progress

Querying the softwareversion running on the BTS

Testing the BTS

Monitoring BTS resources

Monitoring environment

Viewing BTS logs

Testing transportperformance

Performing the BTS hardreset

Providing the opticaltransmission boardcommand console

Querying the temperature inthe equipment room

Maintaining the ringnetwork

Managing thereporting ofperformance dataManaging NE usersMonitoring NE statusCentralizing usermanagementMonitoring NEperformanceMonitoring NEs inreal timeViewing fileinformation of NEs



9-3

MaintenanceObject




Maintainingcells

Managing cellattributesManaging cellextended attributesPerforming cellOpstartPerforming cellperformance testsModifying theadministrative stateof the cell

Modifying theadministrative statePerforming force handoversSending cell systemmessagesQuerying frequencyscanningConfiguring frequencyscanning

Viewing the statisticsof the celldistributionViewing the basicconfiguration of thecellViewing theconfiguration of theCCH of a cellViewing neighborcellsMonitoring theconfiguration of anobjectCollecting the alarmsof the monitoredobjectBlocking/unblockingcells

MaintainingBT

Performing BTOpstartRe-Initializing aBTSetting the TRXfull power emissionModifying theadministrative stateof the BTPerforming BTtestsViewing thechannel status

- -


Product Description


Issue 03 (2008-07-15)

MaintenanceObject




MaintainingRC

Managing RCattributesManaging RCextended attributesPerforming RCOpstartRe-Initializing anRCModifying theadministrative stateof the RCViewing theautomatic powercorrection typeObtaining thepower mode of theRC

Modifying theadministrative stateTesting the RC performanceViewing the power mode ofthe RCViewing the automaticpower correction typeConducting loopback testson the RCTesting idle timeslotsTesting codec modesResetting RCsControlling the RC power

-

Maintainingchannels

Managing channelattributesPerforming channelOpstartModifying theadministrative stateof the channelPerformingloopback tests

Modifying theadministrative stateMonitoring the channelstatusMonitoring the channelinterference bandPerforming the loopbacktest on a channelTesting the channelperformance

Viewing the basicconfiguration of thecellViewing theconfiguration of theCCH of a cell



9-5

MaintenanceObject




Maintainingboards

Configuring racksConfiguring boardsManaging boards

Querying the softwareversion running on theboardQuerying the matching ofboardsQuerying bar codes ofboardsQuerying board informationMaintaining clocksResetting boardsPerforming switchover ofboardsQuerying the power modulestatusResetting smoke alarmsManaging batteriesSetting/Querying powermodule parametersPerforming the loopbacktest on boardcommunication linksQuerying the cavity stateand the cavity frequencySetting the TMA feederResetting the auxiliaryequipmentMaintaining the RETantenna

Viewing NE boardreportsQuerying inventorydata

9.2 OM Functions of the BTSThe OM functions of the BTS3900 consist of equipment management, software management,configuration management, service management, performance management, securitymanagement, alarm management, and environment monitoring.

Equipment Management

Through the OM system, you can query the status of all the components (boards/modules) andall the external devices (power supply/environment monitoring/RET). You can also performdata configuration and status management for some devices.


Product Description


Issue 03 (2008-07-15)

Software Managementl Provides various functions, such as downloading and activating the BTS software,

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

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

Configuration Managementl Checks whether the added, deleted, or changed BTS data is consistent with the actual

situation.l Supports automatic data backup.

l Supports dynamic and static data configuration. In dynamic data configuration, the dataimmediately takes effect after modification; in static data configuration, the modified datatakes effect after the BTS is reset.

Service Managementl Supports parameter setting and alarm query for the baseband boards, RET antenna, and

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

configuration (antenna tilt and TMA gain), status query, and alarm reporting.l Supports perfect 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.

Performance Managementl Monitors the performance of the internal and external telecommunications networks and

generates alarms when the performance deterioratesl Monitors the operating status of the BTS, such as monitors the traffic volume on the ports

and measures the technical data of the BTSl Monitoring the usage of key components in the board, such as the CPU and DSP

Security ManagementThe OM system provides security management functions, such as connection management, userauthentication, encryption, and forward and backward resolution of the interface messagesbetween the BTS software and the OMC.

Alarm Managementl Supports query of real-time alarms and history alarms

l Collects internal and external alarms, such as the environment monitoring device inputsand Boolean inputs

l Processes alarm correlation to ensure precision and accuracy in locating alarms

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

l Provides functions of detecting and reporting alarms, and processing alarm correlation inthe system



9-7

Environment Monitoringl The BTS has a perfect environment monitoring system.

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


Product Description


Issue 03 (2008-07-15)

10 Technical Specifications of theBTS3900A

About This Chapter

The technical specifications of the BTS3900A involve capacity specifications, RFspecifications, engineering specifications, surge protection specifications, physical ports,environmental requirements, and compliance standards.

10.1 Capacity Specifications of the BTS3900/BTS3900AThe BTS3900/BTS3900A capacity specifications are in terms of the number of TRXs and cells.

10.2 RF Specifications of the BTS3900/BTS3900AThe radio frequency specifications of the BTS3900/BTS3900A involve the specifications relatedto the operating frequency bands, the transmitter, and the receiver.

10.3 Engineering Specifications of the BTS3900AThe BTS3900A engineering specifications consist of the dimensions, weight, power supply, andpower consumption.

10.4 Surge Protection Specifications of the BTS3900AThis describes the surge protection specifications of the BTS3900A. The surge protectionspecifications of the BTS3900A ports consist of the DC or AC power supply, antenna, signal,and dry contact alarms.

10.5 Physical Ports of the BTS3900AThe BTS3900A provides many physical ports to connect to the external equipment. The physicalports of the BTS3900A consists of power ports, transmission ports, and alarm ports.

10.6 Compliance Standards of the BTS3900/BTS3900AThe BTS3900/BTS3900A complies with the standards of power distribution, EMC, surgeprotection, safety, operating environment, transportation adaptability, and storage adaptability.

10.7 Environmental Requirements of the BTS3900AThis describes the environmental requirements. The requirements consist of the BTS3900Aconsist of the environmental requirements for operating, transporting, and storing theBTS3900A.

BTS3900A GSMProduct Description 10 Technical Specifications of the BTS3900A


10-1

10.1 Capacity Specifications of the BTS3900/BTS3900AThe BTS3900/BTS3900A capacity specifications are in terms of the number of TRXs and cells.

l A single cabinet holds up to six DRFUs.

l A single cabinet serves up to six sectors.

l A single cabinet supports the maximum configuration of S4/4/4, up to 12 GSM TRXs.

l A single site supports up to 72 GSM TRXs in the maximum cell configuration of S24/24/24.

10.2 RF Specifications of the BTS3900/BTS3900AThe radio frequency specifications of the BTS3900/BTS3900A involve the specifications relatedto the operating frequency bands, the transmitter, and the receiver.

Operating Frequency Band

Table 10-1 lists the frequency bands supported by the BTS3900/BTS3900A. The spacingbetween two frequencies is 200 kHz.

Table 10-1 Operating frequency bands of the BTS3900/BTS3900A

Operating FrequencyBand

RX Frequency Band TX Frequency Band

PGSM 900 MHz 890–915 MHz 935–960 MHz

EGSM 900 MHz 880–915 MHz 925–960 MHz

GSM 1800 MHz 1710–1785 MHz 1805–1880 MHz

Transmitter specification

Table 10-2 lists the rated output power of the DRFU in the BTS3900/BTS3900A.

Table 10-2 Output power of the DRFU in the BTS3900/BTS3900A


Work Mode Output Power (GMSK/8PSK TOC)

900 MHz Non-combination 45 W/30 W

900 MHz Combination 20 W/14 W

900 MHz PBT 71 W/47 W

1800 MHz Non-combination 40 W/26 W

1800 MHz Combination 18 W/12 W

10 Technical Specifications of the BTS3900ABTS3900A GSM

Product Description


Issue 03 (2008-07-15)


Work Mode Output Power (GMSK/8PSK TOC)

1800 MHz PBT 63 W/42 W

Receiver specification

Table 10-3 lists the static receiver sensitivity of the BTS3900/BTS3900A.

Table 10-3 Receiver sensitivity of the BTS3900/BTS3900A

Receive Mode Operating Frequency Band Static Sensitivity (TypicalValue)

Receive independency 900 MHz -113 dBm

1800 MHz -113 dBm

Two-way receivediversity

900 MHz -116 dBm

1800 MHz -116 dBm

Four-way receivediversity

900 MHz -118.5 dBm

1800 MHz -118.5 dBm

10.3 Engineering Specifications of the BTS3900AThe BTS3900A engineering specifications consist of the dimensions, weight, power supply, andpower consumption.

Dimensions

Table 10-4 lists the dimensions of the BTS3900A cabinet.

Table 10-4 Dimensions

Cabinet Type Width (mm) Depth (mm) Height (mm)

RF cabinet 600 480 700

APM30 Power Cabinet 600 480 700

Cabinet base 600 480 200

Weight

Table 10-5 lists the weight of the BTS3900A cabinet.



10-3

Table 10-5 Weight

Cabinet Type Weight (kg)

RF cabinet (DRFUs not involved) 58

RF cabinet (DRFUs involved) 130

APM30 power cabinet (BBU not involved) 65

APM30 power cabinet + RF cabinet 205

Power supplyPower supply: The power supply to the BTS3900A meets the specifications listed in Table10-6.

Table 10-6 Specifications of the input power

Power Type Rated value Allowed Range

220 V AC 220 V AC 176 V AC to 280 V AC

Power consumptionTable 10-7 shows the power consumption of BTS3900A.

Table 10-7 BTS3900A Power Consumption

Configurations Typical PowerConsumption (W)

Maximum PowerConsumption (W)

S2/2/2 (900M, TOC = 20W, not combined)

540 780

S4/4/4 (900M, TOC = 20W, combined)

1150 2120


1150 2120


530 840

S4/4/4 (1800M, TOC = 18W, combined)

1140 2070


750 1150


1140 2070


Product Description


Issue 03 (2008-07-15)

10.4 Surge Protection Specifications of the BTS3900AThis describes the surge protection specifications of the BTS3900A. The surge protectionspecifications of the BTS3900A ports consist of the DC or AC power supply, antenna, signal,and dry contact alarms.

NOTE

l The surge protection specifications of the BTS3900A are defined in compliance with EN300 253,YD/T5098, and YD/T 5068. In addition, the specifications meet ITU-TK series and IEC61000-4-5.

l The unspecified surge current with maximum discharge current is called nominal discharge current.

l surge protection is required on the DC power input port upper-level .

Table 10-8 Surge protection specifications of the BTS3900A

Port Name Surge Protection Mode Surge Current

Signal port Differential mode 3 kA (8/20 us surgecurrent)

Common mode 5 kA (8/20 us surgecurrent)

Transmission port Differential mode 3 kA (8/20 us surgecurrent)


E1 port Differential mode 3 kA (8/20 us surgecurrent)


AC input port Differential mode 60 kA (8/20 us surgecurrent)


DC input port Differential mode 10 kA (8/20 us surgecurrent)


10.5 Physical Ports of the BTS3900AThe BTS3900A provides many physical ports to connect to the external equipment. The physicalports of the BTS3900A consists of power ports, transmission ports, and alarm ports.



10-5

Power port

Table 10-9 Power ports of the BTS3900

Port Name Module Function

Power input terminal Wiring Unit of the PowerSubrack (220 V)

220 V AC input

Transmission Ports

Table 10-10 BBU transmission ports

Port Name Port Function

INSIDE DB25, male Transmits the four E1/T1 signalsbetween the UELP and the GTMU

OUTSIDE DB26 male Provides the input and output of thefour E1/T1 signals between the BBUand the BSC

CPRI0-CPRI5 SFP Provides the input and output of theoptical and electrical transmissionsignals between the BBU and the RFmodule

E1/T1 DB26 male Provides the input and output of thefour E1/T1 signals between theGTMU and the UELP or between theGTMU and the BSC

FE0 RJ45 connector Reserved.Connects the BBU to a routing devicein the equipment room through theEthernet cable to transmit networkinformation

FE1 DLC connector Reserved.Connects the BBU to a routing devicein the equipment room through theEthernet cable to transmit networkinformation


Product Description


Issue 03 (2008-07-15)

Table 10-11 DRFU transmission ports


CPRI0 SFP female connector Connected to the BBU directly, orconnected to the upper-level cascadedDRFU

CPRI1 SFP female connector Connected to the lower-levelcascaded DRFU

Alarms PortsIn the BTS3900A system, the alarms ports vary with the optional modules configured in theBBU3900.

l When the BBU3900 is configured with one UPEU, two RS485 buses and 8 dry contactsignals are provided.

l When the BBU3900 is configured with two UPEUs or one UPEU plus one UEIU, 4 RS485buses and 16 dry contact signals are provided.

Table 10-12 BTS3900A alarm ports


MON0 RJ45connector

Provides the input and output of theexternally collected environmentmonitoring signals in format of the RS485frame to the GTMU

MON1 RJ45connector

Reserved

EXT-ALM0 RJ45connector

Transmits the externally collectedenvironment monitoring signals in formatof the dry contact signals to the GTMU

EXT-ALM1 RJ45connector

Reserved

Other External Ports

Table 10-13 Other external ports of the BTS3900A


ETH RJ45 connector Used for local maintenance andcommissioning



10-7


USB USB connector Reserved.Used in software upgrade from aUSB disk

TST USB connector Connected to a tester for testing theoutput clock signals

10.6 Compliance Standards of the BTS3900/BTS3900AThe BTS3900/BTS3900A complies with the standards of power distribution, EMC, surgeprotection, safety, operating environment, transportation adaptability, and storage adaptability.

Power Distribution Standards

The compliance standards are as follows:

l ETS300132-1-1 Power Supply Interface at the Input to Telecommunication Equipment

l ETS300132-1-2 Power Supply Interface at the Input to Telecommunication Equipment

EMC Standards


l CISPR 22 (1997): limits and methods of measurement of radio disturbance characteristicsof information

l EN55022 (1998): limits and methods of measurement of radio disturbance characteristicsof information

l CISPR 24 (1998): Information Technology Equipment --Immunity characteristics --Limitsand methods measurement

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

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

l IEC61000-4-4: Electromagnetic compatibility (EMC) Part 4:　 Testing and measurementtechniques Section 4:　 Electrical fast transient/burst immunity test Basic EMCpublication

l IEC61000-4-5: Electromagnetic compatibility (EMC) Part 5:　 Testing and measurementtechniques Section 5:　 Surge immunity test

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

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


Product Description


Issue 03 (2008-07-15)

l ETSI 301 489-1 V1.3.1 (2001-09): Electromagnetic compatibility and Radio spectrumMatters (ERM);　 Electromagnetic Compatibility (EMC) standard for radio equipmentand services; Part 1:　 Common technical requirements

l FCC Part 15: Federal Communication Committee - part 15- radio frequency device

Surge Protection Standards


l IEC 61312-1(1995) Protection Against Lightning Electromagnetic Impulse Part I : GeneralPrinciples

l IEC 61643-1(1998) Surge Protective devices connected to low-voltage power distributionsystems

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

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

l ETS 300 253(1995) Equipment Engineering; Earthing and bonding of telecommunicationequipment in telecommunication centers

Safety Standards


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

l IEC 60950-1 Safety of information technology equipment

l EN 60950-1 Safety of information technology equipment

l IEC60215 Safety requirement for radio transmitting equipment

Operating Environment Standards


l EUROPEAN ETS 300 019-1-3 Class 3.1 "Stationary use at weatherprotected locations"

l EUROPEAN ETS 300 753: Equipment Engineering(EE) Acoustic noise emitted bytelecommunications equipment 1997

l EUROPEAN ETS 300 019-1-3-Amd

Transportation Adaptability Standards

The compliance standard is as follows:

EUROPEAN ETS 300 019-1-2 Class 2.3 "PUBLIC transportation"

Storage Adaptability Standards

The compliance standard is as follows:

EUROPEAN ETS 300 019-1-1 Class 1.2 "not temperature-controlled storage"



10-9

10.7 Environmental Requirements of the BTS3900AThis describes the environmental requirements. The requirements consist of the BTS3900Aconsist of the environmental requirements for operating, transporting, and storing theBTS3900A.

10.7.1 Environmental Requirements for Operating the BTS3900AThis describes the working environment of the BTS3900A, which should meet the specifiedrequirements. The specified requirements consists of the climatic, biological, air purity, andmechanical stress requirements.

10.7.2 Environmental Requirements for Transporting the BTS3900AThis describes the optimal transportation environment of the BTS3900A. It focuses on theclimatic, waterproofing, biological, air purity, and mechanical stress requirements fortransporting the BTS3900A.

10.7.3 Environmental Requirements for Storing the BTS3900AThis describes the optimal storage environment of the BTS3900A. It focuses on the climatic,waterproofing, biological, air purity, and mechanical stress requirements for storing theBTS3900A.

10.7.1 Environmental Requirements for Operating the BTS3900AThis describes the working environment of the BTS3900A, which should meet the specifiedrequirements. The specified requirements consists of the climatic, biological, air purity, andmechanical stress requirements.

Climatic requirements

Table 10-14 lists the climatic requirements during the operation of the BTS3900A.

Table 10-14 Climatic requirements

Item Document Scope

Temperature -40 ºC to +50 ºC (without canopy)-40 ºC to +55 ºC (with canopy)

Temperature variation rate ≤ 3 ºC/min

Relative humidity 5% RH to 100% RH

Altitude l The BTS operates normally when the altituderanges from -60 m to 3,000 m.

l When the altitude ranges from 3,000 m to 4,000m, the operating temperature of the BTS drops by1ºC each time the altitude increases by 200 m.

Air pressure 70 kPa to 106 kPa

Solar radiation ≤ 1120 W/s2


Product Description


Issue 03 (2008-07-15)

Item Document Scope

Thermal radiation ≤ 600 W/s2

Wind speed ≤50 m/s

Biological Environment RequirementsThe operating environment of the BTS3900A should meet the following biologicalrequirements:

l No fungus or mildew may grow in the equipment room or near the equipment.

l The place is free from rodents, such as rats.

Air Cleanness RequirementsThe air cleanliness requirements related to the operating environment are as follows:

l The air is free from explosive, conductive, magnetically conductive, or corrosive dust.

l The density of chemically active materials meets the requirements listed in Table 10-15.

Table 10-15 Requirements for the density of chemically active substances

Chemically ActiveSubstance

Unit Density

SO2 mg/m3 ≤0.30

H2S mg/m3 ≤0.10

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 10-16 lists the mechanical stress that the equipment can endure during operation.



10-11

Table 10-16 Requirements for mechanical stress

Item Sub item Document Scope

Sinusoidalvibration

Shift ≤3 mm None

Acceleration None ≤10.0 m/s2

Frequencyrange

2 Hz to 9 Hz 9–200 Hz

Unsteadyimpact

Impactresponsespectrum II

≤250 m/s2

Staticpayload

0

NOTE

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

l The static payload refers to the capability of the equipment in package to bear the pressure from thetop in normal pile-up method.

10.7.2 Environmental Requirements for Transporting theBTS3900A

This describes the optimal transportation environment of the BTS3900A. It focuses on theclimatic, waterproofing, biological, air purity, and mechanical stress requirements fortransporting the BTS3900A.

Climatic RequirementsThe transportation environment of the BTS3900A should meet the climatic requirements listedin Table 10-17.


Item Document Scope

Temperature -40 ºC to +70 ºC

Temperature variation rate ≤ 3 ºC/min

Relative humidity 10% to 100% (without wind)


Product Description


Issue 03 (2008-07-15)

Item Document Scope


l When the altitude ranges from 3,000 m to4,000 m, the operating temperature of the BTSdrops by 1ºC each time the altitude increasesby 200 m.


Solar radiation ≤ 1,120 W/m2

Thermal radiation ≤ 600 W/m2

Wind speed ≤ 50 m/s

Road class 2K4, including 2K3 and package transportationon 3rd-level roads in high altitude areas withoutenvironment protection

Waterproof RequirementsThe waterproofing requirements related to the transportation of the BTS are as follows:

l The package should be intact.

l Waterproofing measures should be taken to prevent rainwater from leaking into thepackage.

l There should be no water accumulated inside transportation vehicles.

Biological Environment RequirementsThe transportation environment of the BTS3900A should meet the following biologicalrequirements:



Air Cleanness RequirementsThe transportation environment of the BTS3900A should meet the following air cleannessrequirements:

l The air is free from explosive, conductive, magnetic conductive, or corrosive dust.

l The mechanically active substance must meet the requirements listed in Table 10-18.



10-13

Table 10-18 Requirements for the density of mechanically active substances

Mechanically ActiveSubstance

Unit Density

Suspended dust (mg/m3) ≤ 35

Falling dust mg/m2h ≤ 0.2

Sand (mg/m3) ≤ 30

NOTE

l Suspended dust: diameter ≤ 75 μm

l Falling dust: 75 μm ≤ diameter ≤ 150 μm

l Sand: 150 μm ≤ diameter ≤ 1,000 μm




Unit Density

SO2 (mg/m3) ≤ 0.30

H2S (mg/m3) ≤ 0.10

NOx (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

The transportation environment of the BTS3900A should meet the mechanical stressrequirements listed in Table 10-20.



Sinusoidalvibration

Shift ≤ 3.5 mm None None

Acceleration None ≤ 10.0 m/s2 ≤ 15.0 m/s2


Product Description


Issue 03 (2008-07-15)


Frequency range 2–9 Hz 9–200 Hz 200–500 Hz

Random vibration Spectrum density ofaccelerated speed

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

Frequency range 2–10 Hz 10–200 Hz 200–500 Hz

Unsteady impact Impact responsespectrum II

≤ 250 m/s3

Static payload ≤ 10 kPa

NOTE

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

l The static payload refers to the capability of the equipment in package to bear the pressure from the topin normal pile-up method.

10.7.3 Environmental Requirements for Storing the BTS3900AThis describes the optimal storage environment of the BTS3900A. It focuses on the climatic,waterproofing, biological, air purity, and mechanical stress requirements for storing theBTS3900A.

Climatic Requirements

The storage environment of the BTS3900A should meet the climatic requirements listed inTable 10-21.


Item Document Scope

Temperature -40 ºC to +70 ºC

Temperature variation rate ≤ 0.5 ºC/min

Relative humidity 10% to 100% (without wind)


l When the altitude ranges from 3,000 m to 4,000m, the operating temperature of the BTS dropsby 1ºC each time the altitude increases by 200m.


Solar radiation ≤ 1,120 W/m2



10-15

Item Document Scope

Thermal radiation ≤ 600 W/m2

Wind speed ≤ 50 m/s

Waterproof Requirements

The storage environment of the BTS3900A should be waterproof. The equipment is preferablystored indoors. The indoor storage environment should meet the following waterproofrequirements:

l There should be no water on the ground, and water should not leak into the package of theequipment.

l In the equipment room, the BTS3900A is installed in a position that is not prone to water,for example, from automatic fire protection devices or the air conditioner.

If the equipment has to be placed outdoors, ensure that:

l The package is intact.

l Waterproofing measures are taken to prevent rainwater from leaking into the package.

l There is no water on the ground and water does not leak into the package.

l The package is not directly exposed to sunlight.

Biological Environment Requirements

The storage environment of the BTS3900A should meet the following biological requirements:



Air Cleanness Requirements

The storage environment of the BTS3900A should meet the following air cleannessrequirements:

l There should be no explosive, conductive, magnetic conductive, or corrosive dust in theair.

l The mechanically active substance must meet the requirements listed in Table 10-22.

Table 10-22 Requirements for the density of mechanically active substances


Unit Density

Suspended dust (mg/m3) ≤ 5.00

Falling dust mg/m2h ≤500.00

Sand (mg/m3) ≤ 300


Product Description


Issue 03 (2008-07-15)


Unit Density

NOTE

l Suspended dust: diameter ≤ 75 μm

l Falling dust: 75 μm ≤ diameter ≤ 150 μm

l Sand: 150 μm ≤ diameter ≤ 1,000 μm




Unit Density

SO2 (mg/m3) ≤ 0.30

H2S (mg/m3) ≤ 0.10

NOx (mg/m3) ≤0.50

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

The storage environment of the BTS3900A should meet the mechanical stress requirementslisted in Table 10-24.



Sinusoidalvibration

Shift ≤ 1.5 mm -

Acceleration - ≤ 5.0 m/s2

Frequency range 2–9 Hz 9–200 Hz

Unsteadyimpact

Impact responsespectrum II

≤ 250 m/s2

Static payload ≤ 5 kPa



10-17


NOTE

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

l The static payload refers to the capability of the equipment in package to bear the pressure from the topin normal pile-up method.


Product Description


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