BTS3900 Product Description-(V300R008 02)

BTS3900

V300R008

Product Description

Issue 02

Date 2008-04-30

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.

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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.

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mailto:[email protected]

Contents

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

1 System Architecture of the BTS3900......................................................................................1-1

2 Introduction to the BTS3900.....................................................................................................2-12.1 Overview of the BTS3900...............................................................................................................................2-22.2 Structure of the BTS3900 Cabinet..................................................................................................................2-2

2.2.1 Structure of the BTS3900 -48 V Cabinet...............................................................................................2-32.2.2 Structure of the BTS3900 +24 V Cabinet..............................................................................................2-42.2.3 Structure of the BTS3900 220 V Cabinet..............................................................................................2-6

2.3 Logical Structure of the BTS3900..................................................................................................................2-82.4 Software Structure of the BTS........................................................................................................................2-9

3 Power Distribution Modes of the BTS3900...........................................................................3-1

4 BTS3900 Monitoring System....................................................................................................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....................................................................................................8-68.3 Topology of DRFUs Connected by CPRI Cables.........................................................................................8-128.4 Typical Configuration of the BTS3900/BTS3900A.....................................................................................8-14

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 BTS3900...........................................................................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 BTS3900...............................................................................................10-310.4 Surge Protection Specifications of the BTS3900........................................................................................10-410.5 Ports of the BTS3900..................................................................................................................................10-5

BTS3900Product Description Contents

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10.6 Compliance Standards of the BTS3900/BTS3900A...................................................................................10-810.7 Environmental Requirements of the BTS3900...........................................................................................10-9

10.7.1 Environment Requirements for Operating the BTS3900.................................................................10-1010.7.2 Environment Requirements for Transporting the BTS3900............................................................10-1210.7.3 Environment Requirements for Storing the BTS3900.....................................................................10-14

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Figures

Figure 1-1 BTS3900 system.................................................................................................................................1-1Figure 2-1 Typical configurations of the BTS3900 -48 V cabinet.......................................................................2-4Figure 2-2 Typical configurations of the BTS3900 +24 V cabinet......................................................................2-5Figure 2-3 Typical configurations of the BTS3900 220 V cabinet......................................................................2-7Figure 2-4 Logical Structure of the BTS3900......................................................................................................2-8Figure 2-5 Software structure of the BTS............................................................................................................2-9Figure 3-1 Power distribution of a single -48 V DC cabinet................................................................................3-1Figure 3-2 Power distribution of two -48 V DC cabinets in stack mode.............................................................3-2Figure 3-3 Power distribution of a single +24 V DC cabinet...............................................................................3-2Figure 3-4 Power distribution when a -48 V DC cabinet is stacked on a +24 V DC cabinet..............................3-3Figure 3-5 Power distribution of a single 220 V AC cabinet...............................................................................3-3Figure 3-6 Power distribution when a -48 V DC cabinet is stacked on a 220 V AC cabinet..............................3-4Figure 4-1 Monitoring ports of the BBU..............................................................................................................4-1Figure 4-2 Components 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 Mapping between the RF signal cables and their colors....................................................................8-6Figure 8-2 Connections of RF cables for S1 (without transmit diversity/with transmit diversity)/S2 (withouttransmit diversity).................................................................................................................................................8-7Figure 8-3 Connections of RF cables for S2 (PBT)/S3 (without transmit diversity)/S4 (without transmit diversity)...............................................................................................................................................................................8-8Figure 8-4 Connections of RF signal cables for S2 (4-way receive diversity)....................................................8-9Figure 8-5 Connections of RF cables for S2 (transmit diversity)/S4 (transmit independency).........................8-10Figure 8-6 Connections of RF cables for S5 (without transmit diversity)/S6 (without transmit diversity).......8-11Figure 8-7 Connections of RF cables for S7 (without transmit diversity)/S8 (without transmit diversity).......8-12Figure 8-8 Typical topology of the DRFUs.......................................................................................................8-13Figure 9-1 Network structure of the OM system.................................................................................................9-2

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Tables

Table 4-1 Monitoring modules of the BTS3900..................................................................................................4-2Table 4-2 Functions of the BTS3900A Monitoring System.................................................................................4-3Table 7-1 Comparison of network topologies......................................................................................................7-3Table 8-1 RF configuration principles of the BTS3900.......................................................................................8-3Table 8-2 Configuration principles of the boards in the BBU.............................................................................8-5Table 8-3 Configuration (1)..................................................................................................................................8-6Table 8-4 Configuration (2)..................................................................................................................................8-7Table 8-5 Configuration (3)..................................................................................................................................8-9Table 8-6 Configuration (4)................................................................................................................................8-10Table 8-7 Configuration (5)................................................................................................................................8-12Table 8-8 Comparison of the three typical topologies of the DRFUs................................................................8-13Table 8-9 Typical configuration of the BTS3900/BTS3900A...........................................................................8-14Table 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 of the cabinet.......................................................................................................................10-4Table 10-6 Specifications of the input power.....................................................................................................10-4Table 10-7 Power consumption of the BTS3900 (S4/4/4).................................................................................10-4Table 10-8 Surge protection specifications of the BTS3900..............................................................................10-5Table 10-9 Power ports of the BTS3900............................................................................................................10-5Table 10-10 BBU transmission ports.................................................................................................................10-6Table 10-11 DRFU transmission ports...............................................................................................................10-6Table 10-12 BTS3900 alarm ports.....................................................................................................................10-7Table 10-13 Other external ports of the BBU3900............................................................................................10-7Table 10-14 Climatic requirements..................................................................................................................10-10Table 10-15 Requirements for the density of chemically active substances....................................................10-11Table 10-16 Mechanical stress requirements...................................................................................................10-11Table 10-17 Climatic requirements..................................................................................................................10-12Table 10-18 Requirements for the density of mechanically active substances................................................10-13Table 10-19 Requirements for the density of chemically active substances....................................................10-13Table 10-20 Mechanical stress requirements...................................................................................................10-14

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Table 10-21 Climatic requirements..................................................................................................................10-14Table 10-22 Requirements for the density of mechanically active substances................................................10-15Table 10-23 Requirements for the density of chemically active substances....................................................10-16Table 10-24 Mechanical stress requirements...................................................................................................10-16

TablesBTS3900

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Issue 02 (2008-04-30)

About This Document

PurposeThis document provides an overview of the BTS3900. It also describes the system architecture,software and hardware structure, functional subsystems, configuration types, signal flow, clocksynchronization modes, and topologies of the BTS3900. This document also lists thespecifications for the capacity, radio frequency (RF), engineering, surge protection, and portsof the BTS3900.

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

Product Name Product Version

BTS3900 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 BTS3900 Product Description.

Organization1 System Architecture of the BTS3900

The BTS3900 consists of the BBU3900, the DRFUs, and the indoor macro cabinet. TheBBU3900 and the DRFUs are installed in the indoor macro cabinet.

2 Introduction to the BTS3900

This provides an overview of the BTS3900, and describes the physical structure, logicalstructure, and software structure of the BTS3900.

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3 Power Distribution Modes of the BTS3900

The BTS3900 cabinet can use three types of power inputs, namely, -48 V DC, +24 V DC, and220 V AC.

4 BTS3900 Monitoring System

The BTS3900 monitoring system enables the power monitoring, fan monitoring, andenvironment monitoring.

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 topologies of the BTS are classified into star, chain, tree, and ring topologies. The BBU andDRFUs support multiple network topologies such as star, chain, and ring topologies. In practice,these topologies can be combined. Optimum utilization of the topologies can improve the qualityof service and save the investment on the transmission equipment.

8 Configuration of the BTS3900/BTS3900A

This describes the configuration principles and typical configurations of the BTS3900/BTS3900A.

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 BTS3900

This describes the BTS3900 technical specifications, which consist of capacity specifications,RF specifications, engineering specifications, lightning protection specifications, and otherspecifications related to physical ports and environment.

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.

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Product Description

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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

BTS3900Product Description About This Document


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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.

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Issue 02 (2008-04-30)

1 System Architecture of the BTS3900

The BTS3900 consists of the BBU3900, the DRFUs, and the indoor macro cabinet. TheBBU3900 and the DRFUs are installed in the indoor macro cabinet.

Figure 1-1 shows the BTS3900 system.

Figure 1-1 BTS3900 system

DRFU

BTS3900 cabinet

BBU

The BTS3900 mainly consists of the following components:

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

l The DRFU is a double radio filter unit that processes two carriers. The DRFU performsmodulation and demodulation between baseband signals and RF signals, processes data,and combines and divides signals.

BTS3900Product Description 1 System Architecture of the BTS3900


1-1

l The indoor macro cabinet houses the BBU3900 and DRFUs. In addition, the indoor macrocabinet provides the functions such as power distribution, heat dissipation, and surgeprotection.

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2 Introduction to the BTS3900

About This Chapter

This provides an overview of the BTS3900, and describes the physical structure, logicalstructure, and software structure of the BTS3900.

2.1 Overview of the BTS3900The BTS3900 is a fourth generation indoor macro base station developed by Huawei. TheBTS3900 mainly consists of the BBU and the DRFUs. Compared with traditional BTSs, theBTS3900 features simpler structure and higher integration.

2.2 Structure of the BTS3900 CabinetThe BTS3900 cabinet supports three types of input power: -48 V DC, +24 V DC, and 220 VAC. The cabinets that support different types of input power are different in structure, mainlyin power distribution unit.

2.3 Logical Structure of the BTS3900The BTS3900 mainly consists of the BBU and DRFUs. The logical structure of the BTS3900consists of the RF subsystem, control subsystem, power subsystem, 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.

BTS3900Product Description 2 Introduction to the BTS3900


2-1

2.1 Overview of the BTS3900The BTS3900 is a fourth generation indoor macro base station developed by Huawei. TheBTS3900 mainly consists of the BBU and the DRFUs. Compared with traditional BTSs, theBTS3900 features simpler structure and higher integration.

The BTS3900 has the following features:

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, which is the central processing unit, with the DBS3900 to minimize thenumber of spare parts and 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 and 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, tree, chain, ring, and hybridtopologies.

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 coexistence with the BTS3X, BTS3012, and DBS3900.

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

l Multiple cabinets support up to 72 TRXs in the maximum cell configuration of S24/24/24.

2.2 Structure of the BTS3900 CabinetThe BTS3900 cabinet supports three types of input power: -48 V DC, +24 V DC, and 220 VAC. The cabinets that support different types of input power are different in structure, mainlyin power distribution unit.

2.2.1 Structure of the BTS3900 -48 V CabinetThe BTS3900 -48 V cabinet uses the external -48 V DC input. The external -48 V DC power isdirectly led into the DCDU-01, which supplies the -48 V DC power to each component in thecabinet. The BTS3900 -48 V cabinet can be installed alone or stacked with another BTS3900-48 V cabinet.

2.2.2 Structure of the BTS3900 +24 V CabinetThe BTS3900 +24 V cabinet uses the external +24 V DC input. The external input power isconverted into -48 V DC through the PSU, and then distributed to the internal components ofthe cabinet through the DCDU-01. The BTS3900 +24 V cabinet can be installed alone or stackedwith a BTS3900 -48 V cabinet.

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2.2.3 Structure of the BTS3900 220 V CabinetThe BTS3900 220 V cabinet uses the external 220 V AC input power. The external input poweris converted into -48 V DC through the PSU, and then distributed to the internal components ofthe cabinet through the DCDU-01. The BTS3900 220 V cabinet can be installed alone or stackedwith a BTS3900 -48 V cabinet.

2.2.1 Structure of the BTS3900 -48 V CabinetThe BTS3900 -48 V cabinet uses the external -48 V DC input. The external -48 V DC power isdirectly led into the DCDU-01, which supplies the -48 V DC power to each component in thecabinet. The BTS3900 -48 V cabinet can be installed alone or stacked with another BTS3900-48 V cabinet.

The BTS3900 -48 V cabinet consists of the DRFU, BBU, GATM, DCDU-01, and FAN unit.Figure 2-1 shows the typical configurations of a single cabinet and two stacked cabinets.



2-3

Figure 2-1 Typical configurations of the BTS3900 -48 V cabinet

One cabinet Two cabinets in stack mode

(1) DRFU (2) FAN unit

(3) GATM (4) BBU

(5) DCDU-01 -

NOTE

When two BTS3900 -48 V cabinets are stacked, the BBU is installed only in the lower cabinet and servesas the baseband control unit for the two cabinets.

2.2.2 Structure of the BTS3900 +24 V CabinetThe BTS3900 +24 V cabinet uses the external +24 V DC input. The external input power isconverted into -48 V DC through the PSU, and then distributed to the internal components of


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the cabinet through the DCDU-01. The BTS3900 +24 V cabinet can be installed alone or stackedwith a BTS3900 -48 V cabinet.

The BTS3900 +24 V cabinet consists of the DRFU, BBU, DCDU-01, PSU (DC/DC), and FANunit. Figure 2-2 shows the typical configurations of a single cabinet and two stacked cabinets.

Figure 2-2 Typical configurations of the BTS3900 +24 V cabinet

One cabinet Two cabinets in stack mode

(1) DRFU (2) FAN unit (3) BBU

(4) DCDU-01 (5) Wiring unit (6) PSU (DC/DC)



2-5

NOTE

l When the two cabinets are stacked, the BTS3900 -48 V cabinet should be stacked on the +24 V cabinet.

l When the BTS3900 +24 V cabinet and the BTS3900 -48 V cabinet are stacked, a maximum of nineDRFUs can be configured.

l When two cabinets are stacked, the BBU is installed only in the lower cabinet and serves as the basebandcontrol unit for the two cabinets.

2.2.3 Structure of the BTS3900 220 V CabinetThe BTS3900 220 V cabinet uses the external 220 V AC input power. The external input poweris converted into -48 V DC through the PSU, and then distributed to the internal components ofthe cabinet through the DCDU-01. The BTS3900 220 V cabinet can be installed alone or stackedwith a BTS3900 -48 V cabinet.

The BTS3900 220 V cabinet consists of the DRFU, BBU, DCDU-01, PMU, PSU (AC/DC), andFAN unit. Figure 2-3 shows the typical configurations of a single cabinet and two stackedcabinets.


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Figure 2-3 Typical configurations of the BTS3900 220 V cabinet

One cabinet Two cabinets in stack mode(1) DRFU (2) FAN unit (3) BBU

(3) DCDU-01 (5) PSU (AC/DC) (6) PMU

(7) Wiring unit - -



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NOTE

l When the two cabinets are stacked, the BTS3900 -48 V cabinet should be stacked on the 220 V cabinet.

l When the BTS3900 220 V cabinet and the BTS3900 -48 V cabinet are stacked, a maximum of nineDRFUs can be configured.

l When two cabinets are stacked, the BBU is installed only in the lower cabinet and serves as the basebandcontrol unit for the two cabinets.

2.3 Logical Structure of the BTS3900The BTS3900 mainly consists of the BBU and DRFUs. The logical structure of the BTS3900consists of the RF subsystem, control subsystem, power subsystem, and antenna subsystem.

Figure 2-4 shows the logical structure of the BTS3900.

Figure 2-4 Logical Structure of the BTS3900

Antenna subsystemControlsubsystem

GATM

Power subrack(AC/DC)

Power subrack(DC/DC)

DCDU-01

-48 V DC -48 V DC

Power subsystem+24 V DC 220 V AC

CPRIRF

signals

RFsignalsCPRI

TMA

TMA

MS

RF subsystem

…

DRFU

DRFU

Opticaltransmission

device

BSCE1

BBU

E1

…

-48 V DC

Bias-Tee

Bias-Tee

NOTE

l In Figure 2-4, the power subrack (DC/DC) is configured in only the +24 V DC cabinet; the powersubrack (AC/DC) is configured in only the 220 V AC cabinet.

l If the TMA is configured, the GATM and the Bias-Tee must be configured.

The logical subsystems of the BTS3900 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:


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– DCDU-01 in the BTS3900 cabinet (-48 V DC)

– DCDU-01 and Power Subrack (DC/DC) in the BTS3900 cabinet (+24 V DC)

– DCDU-01 and Power Subrack (AC/DC) in the BTS3900 cabinet (220 V AC)

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

– Antenna

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 2-5 shows the software structure of the BTS.

Figure 2-5 Software structure of the BTS

Data center

Signalingprotocol software OM software

Platform software

Platform SoftwareThe 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 SoftwareThe functions of the signaling protocol software are as follows:



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l Processing the radio network layer protocol.

l Processing the transport network layer protocol. The transport network layer protocolperforms transport data configuration, ALCAP processing, and SAAL processing.

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 each module.


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3 Power Distribution Modes of the BTS3900

The BTS3900 cabinet can use three types of power inputs, namely, -48 V DC, +24 V DC, and220 V AC.

-48 V DC DistributionFigure 3-1 shows the power distribution of a single -48 V DC cabinet.

Figure 3-1 Power distribution of a single -48 V DC cabinet

Power subsystem of a -48 V DC cabinet

-48 V DC DCDU-01

DRFU0-5

FANBBU

GATM

Reserved

If the external -48 V DC input is used, no additional power system is required. The external -48V DC input is directly connected to the power input terminals on the DCDU-01. Then, theDCDU-01 distributes the -48 V DC to boards and modules in the cabinet.

Figure 3-2 shows the power distribution of two -48 V DC cabinets in stack mode.

BTS3900Product Description 3 Power Distribution Modes of the BTS3900


3-1

Figure 3-2 Power distribution of two -48 V DC cabinets in stack mode

Power subsystem of stacked cabinets

-48 V DCDRFU6-11

FAN

GATMDCDU-01

-48 V DC

DRFU0-5

FANBBU

GATM

Reserved

-48 V DC cabinet

-48 V DC cabinet

DCDU-01

When two -48 V DC cabinets are stacked, the external -48 V DC input is directly connected tothe power input terminals on the DCDUs-01 in both cabinets. Then, the DCDUs-01 distributethe -48 V DC to the boards and modules in both cabinets.

+24 V DC DistributionFigure 3-3 shows the power distribution of a single +24 V DC cabinet.

Figure 3-3 Power distribution of a single +24 V DC cabinet

Power subsystem of a +24 V DC cabinet

+24 V DC -48 V DC

DRFU0-5

FANBBU

GATMDCDU

-01


Reserved

If the external +24 V DC input is used, the cabinet is installed with the power subrack (DC/DC).The power subrack (DC/DC) converts the external +24 V DC input into the -48 V DC andsupplies the -48 V DC to the DCDU-01. Then, the DCDU-01 distributes the -48 V DC to boardsand modules in the cabinet.

Figure 3-4 shows the power distribution when a -48 V DC cabinet is stacked on a +24 V DCcabinet.

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Figure 3-4 Power distribution when a -48 V DC cabinet is stacked on a +24 V DC cabinet


+24 V DC

DRFU6-8

DRFU0-5

DCDU-01 FAN

FANBBU

GATM

GATM

Reserved


+24 V DC cabinet

-48 V DCcabinet

DCDU-01

The power subrack (DC/DC) converts the external +24 V DC input into the -48 V DC andsupplies the -48 V DC to the DCDUs-01 in both cabinets. Then, the DCDUs-01 distribute the-48 V DC to boards and modules in the two cabinets.

220 V AC DistributionFigure 3-5 shows the power distribution of a single 220 V AC cabinet.

Figure 3-5 Power distribution of a single 220 V AC cabinet

Power subsystem of a 220 V AC cabinet

220 V AC -48 V DC

DRFU0-5

FAN

BBU

GATMDCDU

-01


Reserved

If the external 220 V AC input is used, the cabinet is installed with the power subrack (AC/DC).The power subrack (AC/DC) converts the external 220 V AC input into the -48 V DC andsupplies the -48 V DC to the DCDU-01. Then, the DCDU-01 distributes the -48 V DC to boardsand modules in the cabinet.

Figure 3-6 shows the power distribution when a -48 V DC cabinet is stacked on a 220 V ACcabinet.

BTS3900Product Description 3 Power Distribution Modes of the BTS3900


3-3

Figure 3-6 Power distribution when a -48 V DC cabinet is stacked on a 220 V AC cabinet


220 V AC-48 V DC


DRFU6-8

DRFU0-5

FAN

FANBBU

GATM

GATM

DCDU-01

Reserved220 V AC cabinet

-48 V DC cabinet

DCDU-01

The power subrack (AC/DC) converts the external 220 V AC input into the -48 V DC andsupplies the -48 V DC to the DCDUs-01 in both cabinets. Then, the DCDUs-01 distribute the-48 V DC to boards and modules in the two cabinets.

3 Power Distribution Modes of the BTS3900BTS3900

Product Description


Issue 02 (2008-04-30)

4 BTS3900 Monitoring System

The BTS3900 monitoring system enables the power monitoring, fan monitoring, andenvironment monitoring.

BBU 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 provides a maximum of two RS485 buses and 16 Boolean signals.

l The modules on RS485 bus 0 cannot be interchanged with the modules on RS485 bus 1.

l When two PMUs are configured, they cannot be connected to the same bus if the settingsof the DIP switches on the two PMUs are the same.

Components of the Monitoring SystemFigure 4-2 shows the components of the BTS3900 monitoring system.

BTS3900Product Description 4 BTS3900 Monitoring System


4-1

Figure 4-2 Components of the monitoring system

RS485 bus0

Boolean0 -15

PMU FAN1 FAN2 GATM2

DCDU-01 1 DCDU-01 2 Power subrack(DC/DC)

User interface

GATM1EMUA

RS485 bus1BSC

BBU

NOTE

The RS485 bus 0 is indicated by bus0. The RS485 bus 1 is indicated by bus1.

Table 4-1 describes the monitoring modules of the BTS3900.

Table 4-1 Monitoring modules of the BTS3900

Module Address Bus Pin Description

PMU bus0 - Configured only inthe BTS3900 cabinet(220 V AC)

FAN1 bus0 - Mandatory

FAN2 bus0 - Configured whentwo cabinets arestacked

GATM2 bus0 - Optional

GATM1 bus1 - Optional

EMUA bus1 - Optional

DCDU-01 1 Boolean Pin 1 and pin 2 Mandatory

DCDU-01 2 Boolean Pin 7 and pin 8 Configured whentwo cabinets arestacked

Power subrack (DC/DC)

Boolean Pin 3 and pin 6 Configured only inthe BTS3900 cabinet(+24 V DC)

Functions of the BTS3900A Monitoring System

Table 4-2 describes the functions of the BTS3900A monitoring system.

4 BTS3900 Monitoring SystemBTS3900

Product Description


Issue 02 (2008-04-30)

Table 4-2 Functions of the BTS3900A Monitoring System

Module Monitoring Function

FAN l Fan fault detection

l Adjusting rotation speed of the fans

l Detecting temperature and rotation speedof the fans

GATM Reporting the RET control alarm signals

EMUA l Communicating with the centralprocessing unit through the two RS485ports

l Detecting the input voltage

l Providing the independent sensor port fordetecting humidity and temperature (12 VDC/24 V DC current type)

l Providing the port for detecting theBoolean input signals in dry contact modeand in OC mode

l Providing six external Boolean outputcontrol ports of the relay node type

PMU l Communicating with the centralprocessing unit through the RS232/RS422serial port

l Managing the power system and thebattery charging and discharging

l Detecting and reporting water immersionalarms, smoke alarms, door status alarms,and standby Boolean value alarms;reporting ambient humidity andtemperature, battery temperature, andstandby analog values

l Detecting power distribution and reportingalarms

DCDU-01 Providing dry contact for surge protectionfailure

Power subrack (DC/DC) l Detecting module fault alarms(overvoltage output, no output, and fanfault)

l Detecting module protection alarms(overtemperature protection, andovervoltage and undervoltage protection)and AC power failure alarms

BTS3900Product Description 4 BTS3900 Monitoring System


4-3

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.

BTS3900Product 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 signal

3

CPRIE1

BSC

Downlink traffic signal flow

RF signal

RF signal

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

BTS3900Product Description 6 Signal Flow of the BTS3900/BTS3900A


6-1

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

(1) Decapsulates the high-speed CPRI frames to obtain the baseband signals(2) Transmits the baseband signals to the relevant operation units for encapsulation and

interleaving(3) Converts the digital signals into the analog signals and modulates the analog signals

into 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 FlowOpposite 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 signal

3

CPRIE1

BSC

Uplink traffic signal flow

RF signal

RF signal

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 baseband

signals(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 transmits

the data to the BBU through the CPRI signal cable3. 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 transmits

the signals to the BSC through the E1 cable or the optical cable

6 Signal Flow of the BTS3900/BTS3900ABTS3900

Product Description


Issue 02 (2008-04-30)

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 of the BTS3900/BTS3900A.

Figure 6-3 Signaling flow

…

DRFU

DRFU

DRFU

BBUE1

BSC

DBUSCBUS

FHBUS

2 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.

BTS3900Product Description 6 Signal Flow of the BTS3900/BTS3900A


6-3

7 Topologies of the BTS

The topologies of the BTS are classified into star, chain, tree, and ring topologies. The BBU andDRFUs support multiple network topologies such as star, chain, and ring topologies. In practice,these topologies can be combined. Optimum utilization of the topologies can improve the qualityof service and save 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.

BTS3900Product 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 BTSBTS3900

Product Description


Issue 02 (2008-04-30)

Table 7-1 Comparison of network topologies

NetworkTopologies

ApplicationScenario

Advantage Disadvantage

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

NetworkTopologies

ApplicationScenario


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 BTSBTS3900

Product Description


Issue 02 (2008-04-30)

NetworkTopologies

ApplicationScenario


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 and typical configurations of the BTS3900/BTS3900A.

8.1 Configuration Principles of the BTS3900/BTS3900AA single BTS3900/BTS3900A cabinet provides up to 12 carriers with the maximum cellconfiguration of S4/4/4, and supports the dual-band application. In the BTS3900/BTS3900A,the antenna subsystem, DRFUs, and BBU 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.

BTS3900Product Description 8 Configuration of the BTS3900/BTS3900A


8-1

8.1 Configuration Principles of the BTS3900/BTS3900AA single BTS3900/BTS3900A cabinet provides up to 12 carriers with the maximum cellconfiguration of S4/4/4, and supports the dual-band application. In the BTS3900/BTS3900A,the antenna subsystem, DRFUs, and BBU 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 S6/6/6 and S4/4/4+S4/4/4 dual-band cell configurations.

l Wide coverage. The DRFU supports wide coverage. If required, the DRFU can work inPBT, transmit diversity, or 4-way receive diversity mode in configurations lower than S2.

l Antenna configuration principles: the dual-polarized antenna is used in S4/4/4 or lowerconfigurations; the dual-band dual-polarized antenna or two dual-polarized antennas ondifferent frequency bands are used in S4/4/4 + S4/4/4 cell configuration.

Antenna Configuration Principlesl One antenna can serve up to two DRFUs.

NOTE

Single antenna refers to a bi-polarization antenna, which provides two antenna ports.

l The single antenna mode supports the maximum cell configuration of S4; the doubleantenna mode supports the cell configurations of S4 to S12.

l By default, the receive diversity is adopted in the GSM. That is, one dual-polarized antennamust be configured in a cell.

l In a single cell, one dual-polarized antenna is required in the cell configurations lower thanS4 and two dual-polarized antennas are required in the cell configurations of S5 to S8.

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

8 Configuration of the BTS3900/BTS3900ABTS3900

Product Description


Issue 02 (2008-04-30)

Table 8-1 RF configuration principles of the BTS3900

Principle Description Example

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

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

Minimum number ofantennas

l Each sector of the BTSmust be configured withthe minimum number ofantennas.

l For the 2-antenna receivediversity, each sector hastwo antenna channels; forthe 4-antenna receivediversity, each sector hasfour antenna channels.

None



8-3


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.

Parity cell configuration When the sectorconfiguration in the middle isS4 or S8, the TRXs in theneighbor sectors can beconfigured to the middlesector.

S3/4/3, S3/4/5, S5/4/3,S3/4/7, S7/4/3, S5/4/5,S5/4/7, S7/4/5, S7/4/7,S3/8/3, S3/8/5, S3/8/7,S5/8/3, S5/8/5, S5/8/7,S7/8/3, S7/8/5, and S7/8/7

Number of DRFUs Number of DRFUs = (Roundup) Number of S1 sectors +(Number of TRXs - Numberof S1 sectors) ÷ 2

l S1/1/1: Number ofDRFUs = 3

l S3/3/3: Number ofDRFUs = (Round up) (9 ÷2) = 5

l S1/2/3, Number of DRFUs= 1 + (Round up) ((6 - 1) ÷2) = 4

l S1/1/3, Number of DRFUs= 2 + (Round up) ((5 - 2) ÷2) = 4


Product Description


Issue 02 (2008-04-30)


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).

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 ring topology, a single BBU supports up to 18

TRXs; in the chain topology, a single BBU supports up to 36 TRXs.l Table 8-2 describes the configuration principles of the boards in the BBU.

Table 8-2 Configuration principles of the boards in the BBU

Board/Module Description

BSBC One BSBC must be configured.

UBFA One UBFA must be configured.

UPEU l One UPEU must be configured.

l One additional UPEU can be configuredwhen the backup power is required. Theadditional UPEU, however, cannot beconfigured with the UEIU at the sametime.

UEIU l One UEIU must be configured when twoBTS3900 cabinets are configured.

l One UEIU must be configured when twoAPM30 power cabinets are configured.

GTMU l One GTMU must be configured.

l The GTMU occupies slot 5 and slot 6.

UELP l The UELP is not required in theBTS3900.

l One UELP must be configured in theBTS3900A.



8-5

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 8-1 shows the mapping between theRF signal cables and their colors.

Figure 8-1 Mapping between the RF signal cables and their colors

RF jumper betweenthe cascaded DRFUs

Feeder jumperCPRI signal cableCPRI signal cable for

cascaded DRFU modules

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

Single AntennaDouble Receiver

l One DRFUmodule

l One dual-polarized antennaS1 with transmit

diversityTransmit diversity Double Antenna




Figure 8-2 shows the cable connections.


Product Description


Issue 02 (2008-04-30)

Figure 8-2 Connections of RF cables for S1 (without transmit diversity/with transmit diversity)/S2 (without transmit diversity)

INSIDE OUTSIDE

UELP

Antenna

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









8-7

Figure 8-3 Connections of RF cables for S2 (PBT)/S3 (without transmit diversity)/S4 (withouttransmit diversity)

Antenna

INSIDE OUTSIDE

UELP

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 Diversity

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



Product Description


Issue 02 (2008-04-30)

Figure 8-4 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




8-9

Figure 8-5 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 Three DRFUs

l Two dual-polarizedantennas


Product Description


Issue 02 (2008-04-30)







l DRFU2: DoubleAntenna


Figure 8-6 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.



8-11







l Four DRFUsl Two dual-

polarizedantennasS8 without transmit

diversityTransmitindependency orcombining



Figure 8-7 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 8-8 shows the typical topology of the DRFUs.


Product Description


Issue 02 (2008-04-30)

Figure 8-8 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 Comparison of the 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



8-13

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 unit: 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 unit: 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 unit: 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 unit: 4

S1/1/1 +S3/3/3

8 6

S4/4/4 +S4/4/4

12 6


Product Description


Issue 02 (2008-04-30)

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.



8-15

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.

BTS3900Product 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 for maintenance. You can use the Site Maintenance TerminalSystem to operate and maintain the site, cell, Radio Carrier (RC), Baseband Transceiver(BT), channel, and board. In this mode, only one BTS can be maintained at a time.

l Local Maintenance Terminal mode: The LMT is used to maintain the BTS through the OMlinks on the Abis interface, which is an interface between the BSC and the BTS. The LMTcommunicates with the BSC through a LAN. You can use the LMT to operate and maintainthe site, cell, RC, channel, and board. This mode is used in configuring and modifying thedata of the BSC and BTS.

l Centralized network management mode: You can use the Huawei iManager M2000 tomaintain the BTS through the OM network. The M2000 can operate and maintain the site,cell, channel, and board. In this mode, multiple BTSs can be maintained at a time.

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

9 OM System of the BTSBTS3900

Product Description


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Table 9-1 Functions of the BTS OM system

MaintenanceObject

MaintenanceItems for the SiteMaintenanceTerminal System

Maintenance Items forthe LMT

MaintenanceItems for theM2000

Sitemaintenance

Viewing resourcesPerforming siteOpstartConducting RFcounters testsAssigning sitemanagement rightsPerforming forcedsoftware loadingSoftware activationResetting siteshierarchicallyTesting sitesEnvironmentMonitoringTesting thetransmissionperformanceViewing ringtopologyparametersViewing bar codesViewing the alarmdelay timeManaging siteboard parametersProviding theopticaltransmission boardcommand consoleE1 BER DetectionManaging the RETantenna

Downloading the BTSsoftware

Configuring the BTSsoftware

Loading the BTS software

Activating the BTSsoftware

Viewing the BTS runningstatus

Viewing BTS attributes

Resetting BTSshierarchically

Browsing the BTSinitialization progress

Viewing the softwareversion running on the BTS

Testing the BTS

Monitoring BTS resources

Environment Monitoring

Viewing BTS logs

Testing the transmissionperformance

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 statusProviding centralizeduser managementMonitoring NEperformanceMonitoring NEs inreal timeViewing fileinformation of NEs



9-3

MaintenanceObject




Cellmaintenance

Managing cellattributesManaging extendedcell attributesPerforming cellOpstartTesting the cellperformanceModifying 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

BTmaintenance

Performing BTOpstartReinitializing theBTTRX Full PowerEmissionModifying theadministrative stateof the BTTesting the BTViewing thechannel status

None None


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MaintenanceObject




RCmaintenance

Managing RCattributesManaging RCextended attributesPerforming RCOpstartReinitializing theRCModifying 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

None

Channelmaintenance

Managing channelattributesPerforming channelOpstartModifying theadministrative stateof the channelConductingloopback tests

Modifying theadministrative stateMonitoring the channelstatusMonitoring the channelinterference bandConducting loopback testson the channelTesting the channelperformance

Viewing the basicconfiguration of thecellViewing theconfiguration of theCCH of a cell



9-5

MaintenanceObject




Boardmaintenance

Configuring racksConfiguring boardsManaging boards

Viewing the softwareversion running on theboardViewing the matching ofboardsViewing bar codes of boardsViewing board informationMaintaining clocksResetting boardsPerforming switchover ofboardsViewing the power modulestatusResetting smoke alarmsManaging batteriesSetting/Viewing powermodule parametersConducting loopback testson the Layer 3 linkViewing the cavity state andthe cavity frequencySetting the TMA feederResetting the auxiliaryequipmentMaintaining the RETantenna

Viewing NE boardreportsViewing 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 ManagementThrough 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.


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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 take effect after modification; in static data configuration, the modified datatake 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, dataconfiguration (antenna tilt and TMA gain), status query, and alarm reporting.

l Supports perfect self-test on hardware installation. The BTS can use the software packagesaved 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 deteriorates

l Monitors the operating status of the BTS, such as monitors the traffic volume on the portsand measures the technical data of the BTS

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

Security Management

The O&M system provides security management functions, such as connection management,user authentication, 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 Detecting and reporting alarms, and processing alarm correlation in the 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.


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10 Technical Specifications of the BTS3900

About This Chapter

This describes the BTS3900 technical specifications, which consist of capacity specifications,RF specifications, engineering specifications, lightning protection specifications, and otherspecifications related to physical ports and environment.

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 BTS3900This provides the engineering specifications of the BTS3900. These specifications consist of thedimensions, weight, power supply, and power consumption.

10.4 Surge Protection Specifications of the BTS3900The BTS3900 provides surge protection for its ports. The surge protection specifications of theBTS3900 ports consist of the DC or AC supply, antenna, transmission, and dry contact alarms.

10.5 Ports of the BTS3900The BTS3900 provides various physical ports for the external equipment connection. The portsof the BTS3900 consist 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 BTS3900The environmental requirements related to the BTS3900 refer to the requirements on theenvironment during its operation, transportation, and storage.

BTS3900Product Description 10 Technical Specifications of the BTS3900


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 Multiple cabinets support the maximum configuration of S24/24/24, up to 72 GSM TRXs.

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

Receive Band Transmit 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 Specifications

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 BTS3900BTS3900

Product Description


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Work Mode Output Power (GMSK/8PSK TOC)

1800 MHz PBT 63 W/42 W

Receiver Specifications

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 BTS3900This provides the engineering specifications of the BTS3900. These specifications consist of thedimensions, weight, power supply, and power consumption.

Dimensions

Table 10-4 lists the dimensions of the BTS3900 cabinet.

Table 10-4 Dimensions

Configuration Type Width (mm) Depth (mm) Height (mm)

Cabinet 600 450 900

Base 600 420 40

Weight

Table 10-5 lists the weight of the BTS3900 cabinet.



10-3

Table 10-5 Weight of the cabinet

Configuration Type Weight (kg)

Empty cabinet 57

Full Configuration 142

Power Supply

Table 10-6 lists the specifications of the power input for the BTS3900.

Table 10-6 Specifications of the input power

Power Type Rated Value Permissible Range

-48 V DC -48 V DC -38.4 V DC to -57 V DC

+24 V DC +24 V DC +19 V DC to +29 V DC

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

NOTE

The +24 V DC power cabinet and the 220 V AC power cabinet are installed with a power conversion unit.Therefore, an external power cabinet is not required.

Power Consumption

Table 10-7 lists the power consumption value of the BTS3900 in S4/4/4 configuration.

Table 10-7 Power consumption of the BTS3900 (S4/4/4)

Mode Maximum PowerConsumption (W)

Typical PowerConsumption (W)

GSM900, TOC = 20 W 2060 1130

DCS1800, TOC = 18 W 2010 1130

NOTE

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

10.4 Surge Protection Specifications of the BTS3900The BTS3900 provides surge protection for its ports. The surge protection specifications of theBTS3900 ports consist of the DC or AC supply, antenna, transmission, and dry contact alarms.


Product Description


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NOTE

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

Table 10-8 Surge protection specifications of the BTS3900

Port Surge Protection Mode Surge Current

DC power port Differential mode 1 kA (8/20 us surge current)

Common mode 2 kA (8/20 us surge current)

AC power port Differential mode 3 kA (8/20 us surge current)


Antenna port(including the GPSport)

Differential mode 8 kA (8/20 us surge current)


Indoor signal port Differential mode 250 A (8/20 us surge current)

Common mode 250 A (8/20 us surge current)

Indoor dry contactinput

Differential mode 250 A (8/20 us surge current)

Common mode 250 A (8/20 us surge current)

Indoor dry contactoutput

Voltage resistance 1,500 V AC

Outdoor E1/T1 signalport



RET antenna Differential mode 3 kA (8/20 us surge current)


Outdoor dry contactinput



10.5 Ports of the BTS3900The BTS3900 provides various physical ports for the external equipment connection. The portsof the BTS3900 consist of power ports, transmission ports, and alarm ports.

Power Ports

Table 10-9 Power ports of the BTS3900

Port Cabinet Type Description

Power input terminal -48 V DC cabinet -48 V DC input



10-5

Port Cabinet Type Description

Power input terminal +24 V DC cabinet +24 V DC input

L and N terminals 220 V AC cabinet 220 V AC input

Transmission Ports

Table 10-10 BBU transmission ports

Port Connector Description

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

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

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

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

FE0 RJ45 connector A reserved port that performs thefollowing function:Connects the BBU to a routing devicein the equipment room through theEthernet cable to transmit networkinformation

FE1 DLC connector A reserved port that performs thefollowing function:Connects the BBU to a routing devicein the equipment room through theEthernet cable to transmit networkinformation

Table 10-11 DRFU transmission ports


CPRI0 SFP female connector Connected to the BBU directly, orconnected to the upper-level DRFU inthe cascading configuration


Product Description


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CPRI1 SFP female connector Connected to the lower-level DRFUin the cascading configuration

Alarm PortsIn the BTS3900 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 eight 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 BTS3900 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 BBU3900


ETH RJ45 connector For local maintenance andcommissioning

USB USB connector A reserved port that performs thefollowing function:Used in software upgrade from aUSB disk

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



10-7

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 StandardsThe 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 StandardsThe compliance standards are as follows:

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

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 StandardsThe compliance standards are as follows:

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


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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 StandardsThe compliance standards are as follows:

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 StandardsThe compliance standards are as follows:

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 StandardsThe compliance standard is as follows:

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

Storage Adaptability StandardsThe compliance standard is as follows:

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

10.7 Environmental Requirements of the BTS3900The environmental requirements related to the BTS3900 refer to the requirements on theenvironment during its operation, transportation, and storage.

10.7.1 Environment Requirements for Operating the BTS3900This describes the environment requirements for operating the BTS3900. It focuses on theclimatic, biological, air purity, and mechanical stress requirements for operating the BTS3900.

10.7.2 Environment Requirements for Transporting the BTS3900This describes the optimal transportation environment of the BTS3900. It focuses on the climatic,waterproofing, biological, air cleanness, and mechanical stress requirements for transporting theBTS3900.



10-9

10.7.3 Environment Requirements for Storing the BTS3900This describes the optimal storage environment of the BTS3900. It focuses on the climatic,waterproofing, biological, air purity, and mechanical stress requirements for storing theBTS3900.

10.7.1 Environment Requirements for Operating the BTS3900This describes the environment requirements for operating the BTS3900. It focuses on theclimatic, biological, air purity, and mechanical stress requirements for operating the BTS3900.

Climatic Requirements

Table 10-14 lists the climatic requirements for the normal operation of the BTS.

Table 10-14 Climatic requirements

Item Specification

Temperature -20℃ to +50℃ (long-term operating environment)+50℃ to +55℃ (short-term operating environment)

Temperature variation rate ≤ 3 ℃/min

Relative humidity 5% to 95%

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

Solar radiation ≤ 600 W/s2

Wind speed ≤ 50 m/s

NOTE

l In the long-term operating environment, the BTS can operate properly for a long period. In the short-term operating environment, the BTS must operate for less than 96 hours each time and less than 15days each year in total to ensure proper operation without damaging the hardware.

l The heat consumption of the DRFU should be smaller than 355 W.

Biological Environment Requirements

The biological requirements related to the operating environment are as follows:

l The environment should not be conducive for the growth of fungus or mildew.

l There should be no rodents, such as rats.


Product Description


Issue 02 (2008-04-30)

Air Purity Requirements

The air purity requirements related to the operating environment are as follows:

l The air should be free from explosive, conductive, magneto-conductive, or corrosive dust.

l The density of chemically active substances should comply with the requirements listed inTable 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 Requirements

Table 10-16 lists the mechanical stress requirements for the normal operation of the BTS.

Table 10-16 Mechanical stress requirements

Item Sub Item Specification

Sinusoidalvibration

Offset ≤ 3 mm None

Accelerationspeed

None ≤ 10.0 m/s2

Frequencyrange

2-9 Hz 9-200 Hz

Unsteadyimpact

Impactresponsespectrum II

≤ 250 m/s2

Staticpayload

0



10-11

NOTE

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

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

10.7.2 Environment Requirements for Transporting the BTS3900This describes the optimal transportation environment of the BTS3900. It focuses on the climatic,waterproofing, biological, air cleanness, and mechanical stress requirements for transporting theBTS3900.

Climatic RequirementsTable 10-17 lists the climatic requirements for transporting the BTS.


Item Specification

Temperature -40℃ to +70℃


Relative humidity 10% to 100% (irrespective of air speed)

Altitude ≤ 3,000 m


Solar radiation ≤ 1,120 W/m2

Thermal radiation ≤ 600 W/m2


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

Waterproofing 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 biological requirements related to the transportation of the BTS are as follows:


Product Description


Issue 02 (2008-04-30)



Air Purity Requirements

The air purity requirements related to the transportation of the BTS are as follows:

l The air should be free from explosive, conductive, magneto-conductive, or corrosive dust.

l The density of mechanically active substances should comply with the requirements listedin Table 10-18.

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

l The density of chemically active substances should comply with the requirements listed inTable 10-19.



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



10-13


Table 10-20 lists the mechanical stress requirements for transporting the BTS.



Sinusoidalvibration

Offset ≤ 3.5 mm None None

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

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 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 Static payload refers to the capability of the equipment in package to bear the pressure from the top innormal pile-up method.

10.7.3 Environment Requirements for Storing the BTS3900This describes the optimal storage environment of the BTS3900. It focuses on the climatic,waterproofing, biological, air purity, and mechanical stress requirements for storing theBTS3900.

Climatic Requirements

The storage of the BTS should meet the climatic requirements listed in Table 10-21.


Item Specification

Temperature -40℃ to +70℃


Relative humidity 10% to 100%

Altitude ≤ 3,000 m



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Item Specification

Solar radiation ≤ 1,120 W/m2

Thermal radiation ≤ 600 W/m2


Waterproofing RequirementsThe storage environment of the BTS should be waterproofed. The waterproofing requirementsrelated to the indoor storage environment of the BTS are as follows:

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

l The equipment must be kept away from the auto fire-protection devices and air-conditionersthat are prone to leakage.

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 exposed to direct sunlight.

Biological Environment RequirementsThe biological requirements related to the indoor storage environment of the BTS are as follows:



Air Purity RequirementsThe air purity requirements related to the indoor storage environment of the BTS are as follows:

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

l The density of mechanically active substances should comply with the requirements listedin 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



10-15


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

l The density of chemically active substances should comply with the requirements listed in

Table 10-23.



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


The storage of the BTS should meet the mechanical stress requirements listed in Table 10-24.



Sinusoidalvibration

Offset ≤ 1.5 mm -

Accelerationspeed

- ≤ 5.0 m/s2

Frequency range 2-9 Hz 9-200 Hz

Unsteadyimpact

Impact responsespectrum II

≤ 250 m/s2

Static payload ≤ 5 kPa


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Issue 02 (2008-04-30)


NOTE

l 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 Static payload refers to the capability of the equipment in package to bear the pressure from the top innormal pile-up method.



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Documents

BTS3900 Product Description-(V300R008 02)