DBS3900 GSM Product Description-(V300R008_03)

DBS3900 GSM

V300R008

Product Description

Issue 03

Date 2008-06-30

Part Number

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Contents

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

1 DBS3900 Product Family..........................................................................................................1-1

2 Introduction to the DBS3900....................................................................................................2-12.1 System Architecture of the DBS3900.............................................................................................................2-22.2 Logical Structure of the DBS3900..................................................................................................................2-2

2.2.1 Logical Structure of the BBU3900.........................................................................................................2-32.2.2 Logical Structure of the RRU3004.........................................................................................................2-4

2.3 Software Structure of the BTS........................................................................................................................2-6

3 Network Topologies of the DBS3900.....................................................................................3-13.1 Network Topologies of the BBU....................................................................................................................3-23.2 Network Topologies of the RRU....................................................................................................................3-5

4 Typical Scenarios of the DBS3900..........................................................................................4-14.1 Indoor Application Scenarios..........................................................................................................................4-2

4.1.1 Scenario 1: -48 V DC Power Input........................................................................................................4-24.1.2 Scenario 2: 220 V AC Power Input........................................................................................................4-7

4.2 Outdoor Application Scenarios.....................................................................................................................4-114.2.1 Scenario 1: -48 V DC Power Input (Without the Generator)...............................................................4-114.2.2 Scenario 2: 220 V AC Power Input (Transmission Space Not Greater Than 4 U)..............................4-124.2.3 Scenario 3: 220 V AC Power Input (Transmission Space Greater Than 4 U).....................................4-16

5 Clock Synchronization Modes of the DBS3900...................................................................5-1

6 Configuration of the DBS3900.................................................................................................6-16.1 Typical Configurations of the DBS3900.........................................................................................................6-26.2 RF Cable Connections of the RRU.................................................................................................................6-2

7 OM System of the DBS3900.....................................................................................................7-17.1 OM Modes of the DBS3900............................................................................................................................7-27.2 OM Functions of the DBS3900.......................................................................................................................7-2

8 Specifications of the DBS3900.................................................................................................8-18.1 Capacity Specifications of the DBS3900........................................................................................................8-28.2 RF Specifications of the DBS3900.................................................................................................................8-28.3 Engineering Specifications of the DBS3900...................................................................................................8-3

DBS3900 GSMProduct Description Contents

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8.3.1 Engineering Specifications of the BBU.................................................................................................8-38.3.2 Engineering Specifications of the RRU.................................................................................................8-4

8.4 Surge Protection Specifications of Ports on the DBS3900.............................................................................8-68.5 Ports on the DBS3900.....................................................................................................................................8-7

8.5.1 Ports of the BBU....................................................................................................................................8-78.5.2 Ports on the RRU Module....................................................................................................................8-10

8.6 Compliant Standards of the DBS3900..........................................................................................................8-118.7 Environmental Requirements of the DBS3900.............................................................................................8-12

8.7.1 Working Environment Requirements of the DBS3900........................................................................8-128.7.2 Transportation Requirements of the DBS3900....................................................................................8-158.7.3 Storage Requirements of the DBS3900...............................................................................................8-18

Index.................................................................................................................................................i-1

ContentsDBS3900 GSM

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Figures

Figure 1-1 Function modules of the DBS3900....................................................................................................1-1Figure 2-1 System architecture of the DBS3900..................................................................................................2-2Figure 2-2 Logical structure of the BBU3900......................................................................................................2-3Figure 2-3 Logical structure of the RRU module.................................................................................................2-5Figure 2-4 Software structure of the BTS............................................................................................................2-7Figure 3-1 Typical network topologies between the BSC and the BBUs............................................................3-2Figure 3-2 Star topology.......................................................................................................................................3-2Figure 3-3 Chain topology...................................................................................................................................3-3Figure 3-4 Tree topology......................................................................................................................................3-4Figure 3-5 Ring topology.....................................................................................................................................3-4Figure 3-6 Typical network topologies between the BBU and the RRUs...........................................................3-5Figure 4-1 Centralized installation of RRUs (S2)................................................................................................4-2Figure 4-2 Centralized installation of RRUs (S4)................................................................................................4-3Figure 4-3 Separate installation of RRUs (S2 + S2)............................................................................................4-5Figure 4-4 Separate installation of RRUs (S4 + S4)............................................................................................4-6Figure 4-5 Centralized installation of RRUs (S2)................................................................................................4-7Figure 4-6 Centralized installation of RRUs (S4)................................................................................................4-7Figure 4-7 Separate installation of RRUs (S2 + S2)............................................................................................4-9Figure 4-8 Separate installation of RRUs (S4 + S2)..........................................................................................4-10Figure 4-9 Installation scenario of BBU + RRU + TMC...................................................................................4-11Figure 4-10 Installation scenario of BBU + RRU + APM30 + BBC (1)...........................................................4-13Figure 4-11 Installation scenario of BBU + RRU + APM30 + BBC (2)...........................................................4-14Figure 4-12 Installation scenario of BBU + RRU + APM30.............................................................................4-15Figure 4-13 Installation scenario of BBU + RRU + APM30 + TMC + BBC (1)..............................................4-17Figure 4-14 Installation scenario of BBU + RRU + APM30 + TMC + BBC (2)..............................................4-18Figure 4-15 Installation scenario of BBU + RRU + APM30 + TMC................................................................4-19Figure 6-1 Mapping between the RF signal cables and their colors....................................................................6-3Figure 6-2 Connections of the RF cables for S1 (no transmit diversity).............................................................6-3Figure 6-3 Connections of the RF cables for S1 (transmit diversity)..................................................................6-4Figure 6-4 Connections of the RF cables for S2 (no transmit diversity).............................................................6-5Figure 6-5 Connections of the RF cables for S2 (PBT).......................................................................................6-6Figure 6-6 Connections of the RF cables for S2 (transmit diversity)..................................................................6-7Figure 6-7 Connections of the RF cables for S3 (no transmit diversity).............................................................6-8

DBS3900 GSMProduct Description Figures


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Figure 6-8 Connections of the RF cables for S4 (no transmit diversity).............................................................6-9Figure 6-9 Connections of the RF cables for S4 (transmit diversity)................................................................6-10Figure 6-10 Connections of the RF cables for S5 (no transmit diversity).........................................................6-11Figure 6-11 Connections of the RF cables for S6 (no transmit diversity).........................................................6-12Figure 6-12 Connections of the RF cables for S7 (no transmit diversity).........................................................6-13Figure 6-13 Connections of the RF cables for S8 (no transmit diversity).........................................................6-14Figure 7-1 Network structure of the OM system................................................................................................. 7-2

FiguresDBS3900 GSM

Product Description

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Tables

Table 1-1 Description of the function modules of the DBS3900.........................................................................1-1Table 1-2 Description of the auxiliary equipment of the DBS3900.....................................................................1-2Table 6-1 Typical configurations of the DBS3900..............................................................................................6-2Table 6-2 RF cable connections of the RRU........................................................................................................6-3Table 7-1 Functions of the BTS OM system........................................................................................................7-5Table 8-1 Operating frequency bands of the DBS3900.......................................................................................8-2Table 8-2 Transmitter specification of the DBS3900...........................................................................................8-2Table 8-3 Receiver sensitivity of the DBS3900...................................................................................................8-3Table 8-4 Mechanical dimensions of the BBU....................................................................................................8-4Table 8-5 Weight of the BBU...............................................................................................................................8-4Table 8-6 Power input of the BBU.......................................................................................................................8-4Table 8-7 Mechanical dimensions of the RRU....................................................................................................8-5Table 8-8 Weight of the RRU...............................................................................................................................8-5Table 8-9 Power input of the RRU.......................................................................................................................8-5Table 8-10 Total power consumption of the DBS3900 (with the RRU3004)......................................................8-6Table 8-11 Surge protection specifications of the external ports on the BBU3900.............................................8-6Table 8-12 Surge protection specifications of the external ports on the RRU3004.............................................8-7Table 8-13 Power port of the BBU.......................................................................................................................8-8Table 8-14 Transmission ports of the BBU..........................................................................................................8-8Table 8-15 Alarm ports of the BBU.....................................................................................................................8-9Table 8-16 Other ports of the BBU......................................................................................................................8-9Table 8-17 Power ports on the RRU module.....................................................................................................8-10Table 8-18 Transmission ports on the RRU module..........................................................................................8-10Table 8-19 Alarm port on the RRU module.......................................................................................................8-10Table 8-20 Other ports on the RRU module.......................................................................................................8-11Table 8-21 Climatic requirements of the DBS3900...........................................................................................8-12Table 8-22 Requirements for the density of physically active materials............................................................8-13Table 8-23 Requirements for the density of chemically active materials..........................................................8-14Table 8-24 Mechanical stress requirements.......................................................................................................8-14Table 8-25 Climatic requirements (transportation)............................................................................................8-15Table 8-26 Requirements for physically active material....................................................................................8-16Table 8-27 Requirements for chemically active material...................................................................................8-16Table 8-28 Mechanical stress requirements (transportation)..............................................................................8-17

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Table 8-29 Climatic requirements (storage).......................................................................................................8-18Table 8-30 Requirements for physically active material....................................................................................8-19Table 8-31 Requirements for chemically active material...................................................................................8-19Table 8-32 Mechanical stress requirements (storage)........................................................................................8-20

TablesDBS3900 GSM

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About This Document

PurposeThis document describes the composition, orientation, software and hardware structure,subsystems, configuration type, signal flow, clock synchronization, topologies of theDBS3900 GSM. This document also lists the specifications for the capacity, RF, engineering,surge protection, and physical ports of the DBS3900 GSM.

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

Product Name Product Version

DBS3900 GSM (referred to as DBS3900 inthis manual)

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 DBS3900 GSM Product Description.

Organization1 DBS3900 Product Family

This describes the function modules and auxiliary equipment in the DBS3900 product family.

2 Introduction to the DBS3900

This describes the components of the DBS3900 and also describes the software structure andlogical structure of the DBS3900.

3 Network Topologies of the DBS3900

This describes the network topologies of the BBU and RRU.

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4 Typical Scenarios of the DBS3900

This describes the typical installation scenarios of the DBS3900 in outdoor and indoorapplications.

5 Clock Synchronization Modes of the DBS3900

The DBS3900 supports three clock synchronization modes: line clock, BITS clock, and free-run clock.

6 Configuration of the DBS3900

The DBS3900 features flexible configuration and supports multiple receive and transmit modes.

7 OM System of the DBS3900

This describes the OM system of the DBS3900. The OM system manages, monitors, andmaintains the DBS3900. The OM system also provides various OM modes and multiplemaintenance platforms to meet different maintenance requirements.

8 Specifications of the DBS3900

This describes the specifications of the DBS3900. The specifications cover items such as thecapacity, RF, engineering, surge protection, ports, environment, and compliant standards.

Conventions1. 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.

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.

About This DocumentDBS3900 GSM

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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


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.

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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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1 DBS3900 Product Family

This describes the function modules and auxiliary equipment in the DBS3900 product family.

Function Modules of the DBS3900

The function modules of the DBS3900 are the BBU3900 and RRU3004, as shown in Figure1-1.

Figure 1-1 Function modules of the DBS3900

DBS3900

BBU3900 RRU3004 RRU3004

Table 1-1 describes the function modules of the DBS3900.

Table 1-1 Description of the function modules of the DBS3900

FunctionModule

Description

BBU3900 The BBU3900 is an indoor baseband unit. It provides physical interfaces forconnections to the BSC and RRU, manages the entire base station system interms of OM and signaling processing, and provides system clocks.

DBS3900 GSMProduct Description 1 DBS3900 Product Family


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FunctionModule

Description

RRU3004 The RRU3004 is an outdoor remote radio unit. It processes baseband signalsand RF signals.

Auxiliary Equipment of the DBS3900Table 1-2 describes the auxiliary equipment of the DBS3900. The DBS3900 can be configuredwith one or multiple pieces of the auxiliary equipment.

Table 1-2 Description of the auxiliary equipment of the DBS3900

AuxiliaryEquipment

Description

APM The APM is an integrated power backup system for outdoor application. Itfunctions as follows:l Supplying –48 V DC power output

l Providing backup power

l Performing temperature control

l Providing space for installing user equipment

The APM used in the DBS3900 has two types: APM200 and APM30. Fordetails about the functions of the APM200, refer to the APM200 UserGuide. For details about the functions of the APM30, refer to the APM30User Guide.

IBBS The IBBS is a battery cabinet. It functions as follows:l Supplying –48 V DC power output

l Housing batteries of different sizes

l Supporting serial or parallel connection between batteries

For details about the functions of the IBBS, refer to the IBBS User Guide.

OFB The OFB is an integrated DC power distribution and transmission equipmentcabinet for outdoor application. It functions as follows:l Providing 11 U-high space for installing user equipment

l Dissipating heat

l Reporting alarms

DCDU The DCDU is a DC power distribution box. It supplies multiple DC poweroutputs.

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AuxiliaryEquipment

Description

EMUA The EMUA is an environment monitoring device. It functions as follows:l Monitoring the environment of the equipment room

l Monitoring unauthorized entry

l Monitoring power distribution

For details about the functions of the EMUA, refer to the EMUA UserGuide.

DBS3900 GSMProduct Description 1 DBS3900 Product Family


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2 Introduction to the DBS3900

About This Chapter

This describes the components of the DBS3900 and also describes the software structure andlogical structure of the DBS3900.

2.1 System Architecture of the DBS3900This describes the system structure of the DBS3900. The function modules of the DBS3900 canbe configured flexibly to meet different coverage requirements.

2.2 Logical Structure of the DBS3900This describes the internal logical units of the BBU3900 and RRU3004.

2.3 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.

DBS3900 GSMProduct Description 2 Introduction to the DBS3900


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2.1 System Architecture of the DBS3900This describes the system structure of the DBS3900. The function modules of the DBS3900 canbe configured flexibly to meet different coverage requirements.

Figure 2-1 shows the system architecture of the DBS3900.

Figure 2-1 System architecture of the DBS3900

RRU3004

BBU3900

Antenna system

RRU3004

RRU3004

l The DBS3900 consists of the BBU3900 and RRU3004 that are connected through opticalcables.

l The Local Maintenance Terminal (LMT) and Man-Machine Interactive (MMI) maintainsthe DBS3900 through the BBU3900.

l The antenna system receives uplink signals and transmits downlink signals.

NOTE

Unless otherwise specified, BBU is short for BBU3900 in this document. RRU3004 represents the entireRF rack, which houses two RRU modules. The RRU module is an RF module in the RRU3004 rack.

2.2 Logical Structure of the DBS3900This describes the internal logical units of the BBU3900 and RRU3004.

2.2.1 Logical Structure of the BBU3900The BBU3900 consists of five units: BTS interface unit, central processing unit, high-speedinterface unit, clock unit, and monitoring unit.

2.2.2 Logical Structure of the RRU3004One RRU3004 rack can house two RRU modules. An RRU module consists of five units: high-speed interface unit, signal processing unit, power amplifier (PA), dual duplexer, and low noiseamplifier (LNA).

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2.2.1 Logical Structure of the BBU3900The BBU3900 consists of five units: BTS interface unit, central processing unit, high-speedinterface unit, clock unit, and monitoring unit.

Figure 2-2 shows the logical structure of the BBU3900.

Figure 2-2 Logical structure of the BBU3900

Sitemaintenance

terminalCentral processing unit

High-speedinterface unitBTS interface unit

Clock unit

BSC

MMI

Abis

Maintenancepath

RRU

Control path

Servicedata path CPRI

BBU

Monitoring unit

Environmentmonitoring bus

Boolean alarm input

Timing Framenumber

and clockExternal

synchronization clock

BTS Interface UnitThe BTS interface unit performs the following functions:

l Connecting the BTS to the BSC

l Exchanging data between the E1 link and the DBUS

l Synchronizing the lower-level clock with the upper-level clock

Central Processing UnitThe central processing unit performs centralized management of the entire distributed basestation system in terms of OM and signaling processing, and provides system clocks. The centralprocessing unit performs the following functions:

l Supporting the protocols such as UART and HDLC

l Controlling the BTS interface unit to enable the communication between the BSC and theBTS

l Controlling the RF interface unit to enable the communication between the BBU and theRRU



2-3

l Performing clock module functions in terms of providing and managing BTS clock signalsand supporting external synchronization clock input

High-Speed Interface UnitThe high-speed interface unit performs the following functions:

l Receiving uplink baseband data from the RRU

l Transmitting downlink baseband data to the RRU

l Each BBU3900 provides six SFP optical ports.

Clock UnitThe clock unit performs the following functions:

l Providing high-precision clock source for the BTS and providing the system clock basedon this clock source

l Checking the phase-locked status, providing phase lock for the software, adjusting DA,and generating frame numbers

Monitoring UnitThe monitoring unit collects various types of Boolean alarm information, and reports the alarminformation to the central processing unit.

2.2.2 Logical Structure of the RRU3004One RRU3004 rack can house two RRU modules. An RRU module consists of five units: high-speed interface unit, signal processing unit, power amplifier (PA), dual duplexer, and low noiseamplifier (LNA).

Figure 2-3 shows the logical structure of the RRU module.


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Figure 2-3 Logical structure of the RRU module

RRU

High-speed interface unit

processingunit for TX

signals

Processing unit for

RX signals

Controlmodule

DAC

DAC

ADC

ADC

PA

PALOAD

LNA

LNA

BBU

BBU/RRU

Duplexer

TX1RX1

TX2RX2

RXD_INRXM_OUT

Opticalinterface

Antennasystem

Carrier detectionSignal

processing

CMD

RXM_OUT: RRU RX main output for cascaded RRUmodules

RXM_IN: RRU RX diversity input for cascaded RRUmodules

High-Speed Interface Unit

The high-speed interface unit performs the following functions:

l Receiving downlink data from the upper-level equipment, such as the BBU

l Transmitting uplink data to the upper-level equipment, such as the BBU

l Forwarding the data of the cascaded RRU module through the CPRI electrical ports

Signal Processing Unit

The signal processing unit consists of two uplink RX channels, two downlink TX channels, anda control module. Each RRU module supports two carriers. The signal processing unit processesbaseband signals and RF signals. The baseband signal processing involves decoding GMSK and8PSK baseband signals.

The uplink RX channels perform the following functions:

l Down-converting the RX signals into Intermediate Frequency (IF) signals

l Amplifying the IF signals and performing IQ demodulation

l Performing analog-to-digital (A/D) conversion through the ADC

l Sampling digital signals

l Performing matched filtering

l Performing Digital Automatic Gain Control (DAGC)

l Processing and packaging data

The downlink TX channels perform the following functions:



2-5

l Splitting the encapsulated clock signals, control signals, and data signals from the BBUand sending them to associated units

l Implementing the coding, modulating, shaping, and filtering of downlink signals

l Performing digital-to-analog (D/A) conversion through the DAC and performing IQmodulation

l Up-converting RF signals so that they can be transmitted over the TX frequency band

The control module performs the following functions:

l Performing initialization and data loading of the RRU

l Collecting alarm information and reporting board status

l Receiving configuration commands of the BBU and performing configuration managementof other modules

l Providing a channel for operating and maintaining the RRU

PAThe PA performs the following functions:

l Combining or dividing the two carrier signals

l Amplifying the low-power RF signals received from the signal processing unit

Dual DuplexerThe dual duplexer performs the following functions:

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

l Filtering the RX signals and TX signals

LNAThe LNA amplifies the signals received from the antennas.

2.3 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 2-4 shows the software structure of the BTS.


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Figure 2-4 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:

l Processing the radio network layer protocol

l Processing the transport network layer protocol, which performs transport dataconfiguration, 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



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l Software management

l Tracing management

l Security management

l Backup management

l Log management

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


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3 Network Topologies of the DBS3900

About This Chapter

This describes the network topologies of the BBU and RRU.

3.1 Network Topologies of the BBUThe BSC and BBUs support multiple network topologies: star, chain, tree, and ring.

3.2 Network Topologies of the RRUThe BBU and RRUs support the star and chain topologies.

DBS3900 GSMProduct Description 3 Network Topologies of the DBS3900


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3.1 Network Topologies of the BBUThe BSC and BBUs support multiple network topologies: star, chain, tree, and ring.

Typical Network TopologiesFigure 3-1 shows the typical network topologies between the BSC and the BBUs.

Figure 3-1 Typical network topologies between the BSC and the BBUs

BSC

BSC

Chain topology

Star topology

RRU3004

BBU3900

Tree topology

Ring topology

NOTE

The BBU and RRU form the BTS. For easy description, the following figures take the BTS as a whole,instead of the BBU and RRU, to describe the network topologies.

Star TopologyAs the commonest network topology, the star topology applies to most areas, especially denselypopulated areas. Figure 3-2 shows the star topology.

Figure 3-2 Star topologyBSC

BTS

BTS

BTS

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The advantages of the star topology are as follows:

l Each BTS is directly connected to the BSC. Therefore, this topology is simple and facilitatesconstruction, maintenance, and capacity expansion.

l Each BTS directly exchanges data with the BSC. The line reliability is high because signalsare transmitted across only a few nodes.

The disadvantages of the star topology are as follows:

Compared with other topologies, the star topology requires more transmission resources.

Chain TopologyThe chain topology applies to belt-shaped and sparsely populated areas, such as highways andrailways. Figure 3-3 shows the chain topology.

Figure 3-3 Chain topology

BSC BTS BTS BTS

The advantages of the chain topology are as follows:

The chain topology reduces costs in transmission equipment, construction, and transmission linklease.

The disadvantages of the chain topology are as follows:

l The line reliability is poor because signals are transmitted across many nodes.

l The faults in the upper-level BTSs may affect the lower-level BTSs.

l The number of levels in the chain topology should not exceed five.

Tree TopologyThe tree topology applies to areas in which the network structure, site distribution, and subscriberdistribution are complicated, for example, hotspot areas where subscribers are widelydistributed. Figure 3-4 shows the tree topology.



3-3

Figure 3-4 Tree topology

BSC

BTS

BTS

BTS

BTS

The advantages of the tree topology are as follows:

Compared with the star topology, the tree topology requires fewer transmission cables.

The disadvantages of the tree topology are as follows:

l The line reliability is poor and the construction and maintenance are complicated becausesignals are transmitted across many nodes.

l The faults in the upper-level BTSs may affect the lower-level BTSs.

l Capacity expansion is difficult because it may involve major modification to the networkstructure.

l The number of levels in the tree topology should not exceed five.

Ring TopologyThe ring topology applies to common scenarios. Due to its strong self-healing capability, thering topology is preferred if permitted by the routing. Figure 3-5 shows the ring topology.

Figure 3-5 Ring topology

BSC BTS BTS BTS

The advantages of the ring topology are as follows:

3 Network Topologies of the DBS3900DBS3900 GSM

Product Description


Issue 03 (2008-06-30)

The ring topology has strong self-healing ability, that is, if one E1 link becomes faulty, the ringtopology can change to a chain or tree topology.

The disadvantages of the ring topology are as follows:

In the ring topology, there is always a link section that does not transfer data.

3.2 Network Topologies of the RRUThe BBU and RRUs support the star and chain topologies.

Figure 3-6 shows the typical network topologies between the BBU and the RRUs.

Figure 3-6 Typical network topologies between the BBU and the RRUs

BSC

RRU3004

BBU3900

Chain topology

Star topology

NOTE

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



3-5

4 Typical Scenarios of the DBS3900

About This Chapter

This describes the typical installation scenarios of the DBS3900 in outdoor and indoorapplications.

The full spellings of common cabinet names whose abbreviations are used in this document arelisted as follows:

l BBC: Battery Cabinet

l TMC: Transmission Cabinet

l APM: Advance Power Module

4.1 Indoor Application ScenariosThis describes the two typical installation scenarios of the DBS3900 in indoor applications.

4.2 Outdoor Application ScenariosThis describes the three typical installation scenarios of the DBS3900 in outdoor applications.

DBS3900 GSMProduct Description 4 Typical Scenarios of the DBS3900


4-1

4.1 Indoor Application ScenariosThis describes the two typical installation scenarios of the DBS3900 in indoor applications.

4.1.1 Scenario 1: -48 V DC Power InputIf the site supplies the -48 V DC power and the equipment room on this site is available, theBBU and RRU can be installed indoors.

4.1.2 Scenario 2: 220 V AC Power InputIf the site supplies the 220 V AC power and the equipment room on this site is available, theBBU and RRU can be installed indoors.

4.1.1 Scenario 1: -48 V DC Power InputIf the site supplies the -48 V DC power and the equipment room on this site is available, theBBU and RRU can be installed indoors.

Centralized Installation Scenarios of RRUsThe indoor centralized installation scenarios of the BBU and RRU are shown in Figure 4-1 andFigure 4-2.

Figure 4-1 Centralized installation of RRUs (S2)

BBU

-48V INPUTL1

ANT

RRU

JUMPER

S2

4 Typical Scenarios of the DBS3900DBS3900 GSM

Product Description


Issue 03 (2008-06-30)


-48V INPUTL2

ANTJUMPER

S4

L1 L3

DCDU

BBU

RRU

RRU



4-3

In this installation scenario,

l Through the 2-U-high adapting piece, the BBU and DCDU-03B can be installed in theRRU rack.

l The RRU rack can be installed on the wall or stand.

l The requirement for the switch quantity and capacity of the external power input system is1 x 10 A.

l The RRU, BBU, and DCDU-03B are equipotentially connected and then grounded withone PGND cable.

Separate Installation Scenarios of RRUsThe indoor separate installation scenarios of the BBU and RRU are shown in Figure 4-3 andFigure 4-4.


Product Description


Issue 03 (2008-06-30)

Figure 4-3 Separate installation of RRUs (S2 + S2)

-48V INPUTL2

ANTJUMPER

S2+S2

L1

BBU

RRU

RRU

L2

ANTJUMPER

DCDU



4-5


-48V INPUTL2

ANTJUMPER

S4+S4

L1

BBU

RRU

L2

ANTJUMPER

DCDU

RRU

RRU

RRU

L3

L3


l Through the 2-U-high adapting piece, the BBU and DCDU-03B can be installed in theRRU rack.


l The requirements for the switch quantity and capacity of the external power input systemare 1 x 10 A (S2 + S2) and 1 x 20 A (S4 + S4).

l In separate installation scenarios of RRUs, each RRU is individually grounded. Twocascaded RRUs should be equipotentially connected before they are grounded with onePGND cable.


Product Description


Issue 03 (2008-06-30)

4.1.2 Scenario 2: 220 V AC Power InputIf the site supplies the 220 V AC power and the equipment room on this site is available, theBBU and RRU can be installed indoors.

Centralized Installation Scenarios of RRUsThe indoor centralized installation scenarios of the BBU and RRU are shown in Figure 4-5 andFigure 4-6.


AC INPUTL2

ANTJUMPER

S2

L1

4805

BBU

RRU

-48V OUTPUT


AC INPUTL2

ANTJUMPER

S4

L1

4805

BBU

-48V OUTPUT

RRU

RRU



4-7


l Through the 2-U-high adapting piece, the BBU and 4805 can be installed in the RRU rack.


l The requirement for the switch quantity and capacity of the external power input system is1 x 5 A (AC).

l The 4805 serves as an AC/DC conversion unit. It converts the 220 V AC power into the-48 V DC power for the BBU and RRU.

l The RRU, BBU, and 4805 are equipotentially connected and then grounded with one PGNDcable.

l If the 4805 is installed with the BBU, the power system of the 4805 reports alarms to theBBU in dry contact mode.

l If the 4805 is installed with the RRU, the RRU does not support detection and monitoringfunctions. Therefore, monitoring is not required in this scenario.

Separate Installation Scenarios of RRUsThe indoor separate installation scenarios of the BBU and RRU are shown in Figure 4-7 andFigure 4-8.


Product Description


Issue 03 (2008-06-30)


AC INPUTL2

ANTJUMPER

S2+S2

L1

BBU

4805

RRU

ANTJUMPER

4085

-48V OUTPUT

RRU

L2AC INPUTL1



4-9


AC INPUTL2

ANTJUMPER

S4+S2

L1

BBU

4805

ANTJUMPER

4085

-48V OUTPUT

RRU

L2AC INPUTL1

RRU

RRU

L3


l Through the 2-U-high adapting piece, the BBU and 4805 can be installed in the RRU rack.


l The requirement for the switch quantity and capacity of the external power input system is2 x 5 A.

l The 4805 serves as an AC/DC conversion unit. It converts the 220 V AC power into the-48 V DC power for the BBU and RRU.

l The RRU and 4805 are equipotentially connected and then grounded with one PGND cable.

l If the 4805 is installed with the BBU, the power system of the 4805 reports alarms to theBBU in dry contact mode.


Product Description


Issue 03 (2008-06-30)

l If the 4805 is installed with the RRU, the RRU does not support detection and monitoringfunctions. Therefore, monitoring is not required in this scenario.

4.2 Outdoor Application ScenariosThis describes the three typical installation scenarios of the DBS3900 in outdoor applications.

4.2.1 Scenario 1: -48 V DC Power Input (Without the Generator)If the site supplies the -48 V DC power and the generator is not required, the installation scenarioof BBU + RRU + TMC can be used.

4.2.2 Scenario 2: 220 V AC Power Input (Transmission Space Not Greater Than 4 U)If the site supplies the 220 V AC power and the required space for the transmission device is nogreater than 4 U, the installation scenario of BBU + RRU + APM30 + BBC can be used.

4.2.3 Scenario 3: 220 V AC Power Input (Transmission Space Greater Than 4 U)If the site supplies the 220 V AC power and the required space for the transmission device isgreater than 4 U, the installation scenario of BBU + RRU + APM30 + BBC + TMC can be used.

4.2.1 Scenario 1: -48 V DC Power Input (Without the Generator)If the site supplies the -48 V DC power and the generator is not required, the installation scenarioof BBU + RRU + TMC can be used.

Figure 4-9 shows the installation scenario of BBU + RRU + TMC.

Figure 4-9 Installation scenario of BBU + RRU + TMC

RRU

TMC

TM space-7U

Heater-1U

DCDU-03A-1UDCDU-03B-1U

BBU-2U


l The TMC can be installed on the floor, pole, or wall.

l The TMC offers an installation space no greater than 7 U.

l The BBU can be placed in the TMC which is equipped with the DCDU-03B to providepower for the BBU and RRU.

l The DCDU-03A configured in the TMC provides power for the transmission unit.



4-11

l The RRU can be installed on the pole, wall, or tower.

l The requirements for the switch quantity and capacity of the external power input systemare 1 x 63 A (S444), 1 x 80 A (S666), and 1 x 100 A (S888).

4.2.2 Scenario 2: 220 V AC Power Input (Transmission Space NotGreater Than 4 U)

If the site supplies the 220 V AC power and the required space for the transmission device is nogreater than 4 U, the installation scenario of BBU + RRU + APM30 + BBC can be used.

Scenario of Four-Hour Backup PowerIf the backup power required by the site is no greater than four hours, the installation scenarioof BBU + RRU + APM30 + BBC (1) can be used.

Figure 4-10 shows the installation scenario of BBU + RRU + APM30 + BBC (1).


Product Description


Issue 03 (2008-06-30)

Figure 4-10 Installation scenario of BBU + RRU + APM30 + BBC (1)

TM space-4U

Heater-1U

BBC

BAT.48V/92Ah

APM30

BAT.48V/92Ah

PDU-2U

BBU-2U

AC/DC-3U

RRU


l The APM30 and the BBC can be installed on the floor. By default, the APM30 is stackedon the BBC.

l The APM30 provides a space up to 4 U.

l The BBU can be placed in the APM30 which supplies the -48 V DC power for the BBUand RRU.


l If the site requires two-hour backup power, the BBC can be configured with only one rowof batteries.



4-13

l The BBC heater is optional. Without occupying additional internal space, the heater canbe placed under the board at the bottom of each battery layer.

l The requirements for the switch quantity and capacity of the external power input systemare single-phase 1 x 32 A and three-phase 3 x 20 A.

Scenario of Eight-Hour Backup Power

If the site requires eight-hour backup power, the installation scenario of BBU + RRU + APM30+ BBC (2) can be used.

Figure 4-11 shows the installation scenario of BBU + RRU + APM30 + BBC (2).

Figure 4-11 Installation scenario of BBU + RRU + APM30 + BBC (2)

APM30

TM space-4U

Heater-1U

PDU-2U

BBU-2U

AC/DC-3U

BBC

BAT.48V/92Ah

BAT.48V/92Ah

BBC

BAT.48V/92Ah

BAT.48V/92Ah

RRU


l The APM30 and the BBC can be installed on the floor. By default, the two BBCs arestacked.



Product Description


Issue 03 (2008-06-30)





Scenario of Half-Hour Backup PowerIf the site requires half-hour backup power, the installation scenario of BBU + RRU + APM30can be used.

Figure 4-12 shows the installation scenario of BBU + RRU + APM30.

Figure 4-12 Installation scenario of BBU + RRU + APM30

APM30

TM space-2U

BAT

Heater-1U

PDU-2U

BBU-2U

AC/DC-3U

RRU




4-15

l The 24-Ah battery can be placed in the APM30 and the battery supports the maximum cellconfiguration of S4/4/4 in the case of half-hour backup power.





4.2.3 Scenario 3: 220 V AC Power Input (Transmission Space GreaterThan 4 U)

If the site supplies the 220 V AC power and the required space for the transmission device isgreater than 4 U, the installation scenario of BBU + RRU + APM30 + BBC + TMC can be used.

Scenario of Four-Hour Backup PowerIf the backup power required by the site is no greater than four hours, the installation scenarioof BBU + RRU + APM30 + TMC + BBC (1) can be used.

Figure 4-13 shows the installation scenario of BBU + RRU + APM30 + TMC + BBC (1).


Product Description


Issue 03 (2008-06-30)

Figure 4-13 Installation scenario of BBU + RRU + APM30 + TMC + BBC (1)

TM space-4U

Heater-1U

BBC

BAT.48V/92Ah

APM30

BAT.48V/92Ah

PDU-2U

BBU-2U

AC/DC-3U

RRU

TMC

TM space-10U

Heater-1U

DCDU-03A-1U


l The APM30, TMC, and BBC can be installed on the floor. By default, the APM30 is stackedon the BBC.

l The maximum distance between the APM30 and the TMC is one meter.l The BBU can be placed in the APM30 which supplies the -48 V DC power for the BBU

and RRU.l The RRU can be installed on the pole, wall, or tower.l If the site requires two-hour backup power, the BBC can be configured with only one row

of batteries.l The BBC heater is optional. Without occupying additional internal space, the heater can

be placed under the board at the bottom of each battery layer.l The requirements for the switch quantity and capacity of the external power input system

are single-phase 1 x 32 A and three-phase 3 x 20 A.

Scenario of Eight-Hour Backup PowerIf the site requires eight-hour backup power, the installation scenario of BBU + RRU + APM30+ TMC + BBC (2) can be used.



4-17

Figure 4-14 shows the installation scenario of BBU + RRU + APM30 + TMC + BBC (2).

Figure 4-14 Installation scenario of BBU + RRU + APM30 + TMC + BBC (2)

APM30

TM space-4U

Heater-1U

PDU-2U

BBU-2U

AC/DC-3U

BBC

BAT.48V/92Ah

BAT.48V/92Ah

BBC

BAT.48V/92Ah

BAT.48V/92Ah

RRU

TMC

TM space-10U

Heater-1U

DCDU-03A-1U


l The APM30 and the BBC can be installed on the floor. By default, the two BBCs arestacked.

l The maximum distance between the APM30 and the TMC is one meter.






Product Description


Issue 03 (2008-06-30)

Scenario of Half-Hour Backup Power

If the site requires half-hour backup power, the installation scenario of BBU + RRU + APM30+ TMC can be used.

Figure 4-15 shows the installation scenario of BBU + RRU + APM30 + TMC.

Figure 4-15 Installation scenario of BBU + RRU + APM30 + TMC

TM space-2U

Heater-1U

PDU-2U

BBU-2U

AC/DC-3U

APM30

RRU

TMC

TM space-10U

Heater-1U

DCDU-03A-1U

BAT


l The APM30 and TMC can be installed on the floor. By default, the APM30 is installedwith the TMC in parallel mode instead of stack mode.

l The maximum distance between the APM30 and the TMC is one meter.

l The 24-Ah battery can be placed in the APM30 and the battery supports the maximum cellconfiguration of S4/4/4 in the case of half-hour backup power.





4-19



Product Description


Issue 03 (2008-06-30)

5 Clock Synchronization Modes of theDBS3900

The DBS3900 supports three clock synchronization modes: line clock, BITS clock, and free-run clock.

Line ClockThe BBU directly extracts the clock from the E1/T1 interface. Then, the BBU exports the precise2 MHz and 8 kHz clocks after frequency dividing, phase locking, and phase adjusting. The 2MHz and 8 kHz clocks are used for frame synchronization and bit synchronization in theDBS3900.

BITS ClockThe BBU3900 supports the BITS clock mode by providing a port for the input of 2.048 MHzBITS clock.

Free-Run ClockThe internal free-run clock guarantees the normal operation of the BTS when external clockreferences are unavailable.

DBS3900 GSMProduct Description 5 Clock Synchronization Modes of the DBS3900


5-1

6 Configuration of the DBS3900

About This Chapter

The DBS3900 features flexible configuration and supports multiple receive and transmit modes.

Configuration FeaturesThe DBS3900 has the following features in terms of configuration:

l It supports omni-directional and directional coverage modes.

l The RF modules can be cascaded.

l The transmit modes include the transmit independency, transmit combining, PBT, transmitdiversity, and dynamic PBT.

l The receive modes include the main diversity and four-way receive diversity.

l The antenna modes include the single antenna, single antenna double receiver, doubleantenna, and double antenna four receiver.

6.1 Typical Configurations of the DBS3900The DBS3900 supports omni-directional, 2-sector, and 3-sector configurations. It also supportssmooth capacity expansion from 1 x 1 to 3 x 8.

6.2 RF Cable Connections of the RRUThis describes the RF cable connections of the RRU. The RF cables of the RRU are classifiedinto the RF jumpers and the interconnect jumpers. According to the field requirements, the RFjumper can be connected to the feeder or directly connected to the antenna. The interconnectjumper connects the RX_IN/OUT ports of two RRU3004s and transmits RF signals betweenthe two RRUs. You can determine the appropriate RF cable connection based on the actualconfiguration modes.

DBS3900 GSMProduct Description 6 Configuration of the DBS3900


6-1

6.1 Typical Configurations of the DBS3900The DBS3900 supports omni-directional, 2-sector, and 3-sector configurations. It also supportssmooth capacity expansion from 1 x 1 to 3 x 8.

Table 6-1 shows the typical configurations of the DBS3900.

Table 6-1 Typical configurations of the DBS3900

Configuration Type Number of BBUs Number of RRU Modules (NoTransmit Diversity)

S1/1/1 1 3

S2/2/2 1 3

S3/3/3 1 6

S4/4/4 1 6

S5/5/5 1 9

S6/6/6 1 9

S7/7/7 1 12

S8/8/8 1 12

NOTE

For details about RF cable connections in different configurations of the DBS3900, refer to 6.2 RF CableConnections of the RRU.

6.2 RF Cable Connections of the RRUThis describes the RF cable connections of the RRU. The RF cables of the RRU are classifiedinto the RF jumpers and the interconnect jumpers. According to the field requirements, the RFjumper can be connected to the feeder or directly connected to the antenna. The interconnectjumper connects the RX_IN/OUT ports of two RRU3004s and transmits RF signals betweenthe two RRUs. You can determine the appropriate RF cable connection based on the actualconfiguration modes.

Table 6-2 describes the RF cable connections in different configuration modes.

NOTE

Table 6-2 takes the star topology between the BBU3900 and the RRU3004 as an example.

The RF cables differ from each other in colors. Figure 6-1 shows the mapping between the RFsignal cables and their colors.

6 Configuration of the DBS3900DBS3900 GSM

Product Description


Issue 03 (2008-06-30)

Figure 6-1 Mapping between the RF signal cables and their colors

Feeder jumperCPRI optical cable

CPRI signal cable for cascaded RRU modules

RF jumper of cascaded RRU modules

Table 6-2 RF cable connections of the RRU

TypicalConfiguration

Hardware Configuration SoftwareConfiguration

S1 l One RRU

l One dual-polarized antenna

Figure 6-2 shows the connections of the RF cables.

Figure 6-2 Connections of the RF cables for S1 (notransmit diversity)

ANT_TX/RXA

RX_IN/OUT

CPRI_E

CPRI_W

RRU0

BBU

CPRI5CPRI0

ANT Antenna

ANT_TX/RXB

~

TRX attributes andantenna mode on theBSC side:l Transmit mode:

TransmitIndependency

l Receive mode:Receive Diversity

l Antenna mode:Double Antenna



6-3



S1 l One RRU



Figure 6-3 Connections of the RF cables for S1(transmit diversity)

ANT_TX/RXA

RX_IN/OUT

CPRI_E

CPRI_W

RRU0

BBU

CPRI5CPRI0

ANT Antenna

ANT_TX/RXB

~


TransmitDiversity




Product Description


Issue 03 (2008-06-30)



S2 l One RRU




ANT_TX/RXA

RX_IN/OUT

CPRI_E

CPRI_W

RRU0

BBU

CPRI5CPRI0

ANT Antenna

ANT_TX/RXB

~


TransmitIndependency orCombining





6-5



S2 l Two RRUs



Figure 6-5 Connections of the RF cables for S2 (PBT)

RRU0

BBU

CPRI5CPRI0

RX_IN/OUT

CPRI_E

CPRI_W

RRU1

RX_IN/OUT

CPRI_E

CPRI_W

ANT_TX/RXA ANT_TX/RXBANT_TX/RXA

ANT_TX/RXB

ANT Antenna

～


PBTl Receive mode:

Receive Diversityl Antenna mode:

Single AntennaDouble Receiver


Product Description


Issue 03 (2008-06-30)



S2 l Two RRUs

l Two dual-polarized antennas



RRU0

BBU

CPRI5CPRI0

RX_IN/OUT

CPRI_W

CPRI_E

RRU1

RX_IN/OUT

CPRI_W

CPRI_E

ANT0 Antenna ANT1 Antenna

ANT_TX/RXA ANT_TX/RXBANT_TX/RXA ANT_TX/RXB

~


TransmitDiversity

l Receive mode: 4-Way ReceiveDiversity




6-7



S3 l Two RRUs




RRU0

BBU

CPRI5CPRI0

RX_IN/OUT

CPRI_W

CPRI_E

RRU1

RX_IN/OUT

CPRI_W

CPRI_E


ANT Antenna

～




l Antenna mode:Single AntennaDouble Receiver


Product Description


Issue 03 (2008-06-30)



S4 l Two RRUs




RRU0

BBU

CPRI5CPRI0

RX_IN/OUT

CPRI_W

CPRI_E

RRU1

RX_IN/OUT

CPRI_W

CPRI_E


ANT Antenna

～







6-9



S4 l Two RRUs




RRU0

BBU

CPRI5CPRI0

RX_IN/OUT

CPRI_W

CPRI_E

RRU1

RX_IN/OUT

CPRI_W

CPRI_E

ANT0 Antenna ANT1


～

Antenna






Product Description


Issue 03 (2008-06-30)



S5 l Three RRUs




RX_IN/OUT

CPRI_W

CPRI_E

RRU0

BBU

RX_IN/OUT

CPRI_W

CPRI_E

RRU1

RX_IN/OUT

CPRI_W

CPRI_E

RRU2

ANT_TX/RXA ANT_TX/RXB ANT_TX/RXA ANT_TX/RXBANT_TX/RXA ANT_TX/RXB


～CPRI0 CPRI5




l Antenna mode:Double Antennafor RRU0 andRRU1, and SingleAntenna DoubleReceiver for RRU2



6-11



S6 l Three RRUs




RX_IN/OUT

CPRI_W

CPRI_E

RRU0

BBU

RX_IN/OUT

CPRI_W

CPRI_E

RRU1

RX_IN/OUT

CPRI_W

CPRI_E

RRU2

ANT_TX/RXA ANT_TX/RXB ANT_TX/RXA ANT_TX/RXBANT_TX/RXA ANT_TX/RXB


～CPRI0 CPRI5




l Antenna mode:Double Antennafor RRU0 andRRU1, and SingleAntenna DoubleReceiver for RRU2


Product Description


Issue 03 (2008-06-30)



S7 l Four RRUs




RX_IN/OUT

CPRI_W

CPRI_E

RRU0

BBU

RX_IN/OUT

CPRI_W

CPRI_E

RRU1 RRU2

ANT0 Antenna

RX_IN/OUT

CPRI_W

CPRI_E

RRU3

ANT_TX/RXAANT_TX/RXB

ANT1 Antenna

CPRI5CPRI0 ~

RX_IN/OUT

CPRI_W

CPRI_E

ANT_TX/RXAANT_TX/RXB ANT_TX/RXA

ANT_TX/RXBANT_TX/RXB

ANT_TX/RXA







6-13



S8 l Four RRUs




RX_IN/OUT

CPRI_W

CPRI_E

RRU0

BBU

RX_IN/OUT

CPRI_W

CPRI_E

RRU1 RRU2

ANT0 Antenna

RX_IN/OUT

CPRI_W

CPRI_E

RRU3

ANT_TX/RXAANT_TX/RXB

ANT1 Antenna

CPRI5CPRI0 ~

RX_IN/OUT

CPRI_W

CPRI_E

ANT_TX/RXAANT_TX/RXB ANT_TX/RXA

ANT_TX/RXBANT_TX/RXB

ANT_TX/RXA






Product Description


Issue 03 (2008-06-30)

7 OM System of the DBS3900

About This Chapter

This describes the OM system of the DBS3900. The OM system manages, monitors, andmaintains the DBS3900. The OM system also provides various OM modes and multiplemaintenance platforms to meet different maintenance requirements.

7.1 OM Modes of the DBS3900The OM modes of the DBS3900 consist of the Site Maintenance Terminal mode, LocalMaintenance Terminal (LMT) mode, and iManager M2000 (M2000) mode.

7.2 OM Functions of the DBS3900DBS3900The OM functions of the DBS3900 consist of security management, equipmentmanagement, configuration management, software management, alarm management,environment monitoring, and performance management. The OM functions of the DBS3900can be performed on the Site Maintenance Terminal, LMT, and M2000.

DBS3900 GSMProduct Description 7 OM System of the DBS3900


7-1

7.1 OM Modes of the DBS3900The OM modes of the DBS3900 consist of the Site Maintenance Terminal mode, LocalMaintenance Terminal (LMT) mode, and iManager M2000 (M2000) mode.

Figure 7-1 shows the network structure of the DBS3900 OM system.

Figure 7-1 Network structure of the OM system

BSC

VLAN

iManager M2000

LMT

BTS

BTS

Sitemaintenance terminal

Sitemaintenance terminal

You can maintain the DBS3900 in following modes:

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

l LMT mode: The LMT can be used to maintain the BTS through the OM links on the Abisinterface between the BSC and the BTS. The LMT communicates with the BSC through aLAN. You can use the LMT to operate and maintain the site, cell, RC, channel, and board.This mode is used for configuring and modifying the data of the BSC and BTS.

l M2000 mode: You can use the M2000 to maintain the BTS through the OM network. Thesite, cell, channel, and board can be operated and maintained on the M2000. In this mode,multiple BTSs can be maintained at a time.

7.2 OM Functions of the DBS3900DBS3900The OM functions of the DBS3900 consist of security management, equipmentmanagement, configuration management, software management, alarm management,environment monitoring, and performance management. The OM functions of the DBS3900can be performed on the Site Maintenance Terminal, LMT, and M2000.

7 OM System of the DBS3900DBS3900 GSM

Product Description


Issue 03 (2008-06-30)

Security Management

The DBS3900 authorizes maintenance engineers with hierarchical operation rights to ensure thesystem security. At the same time, dialog boxes are displayed before dangerous operations areperformed. Before issuing an important OM command, you are prompted to view the possibleresults of the operation and then to confirm the operation.

Equipment Management

Equipment management consists of equipment maintenance and data configuration.

Configuration Management

The functions of configuration management are as follows:

l Checking whether the added, deleted, or modified BTS data is consistent with the actualconfigurations

l Supporting automatic data backup

l Supporting dynamic and static data configuration modes In dynamic data configurationmode, the modified data takes effect immediately. In static data configuration mode, themodified data takes effect only after the BTS is restarted.

Software Management

The functions of the software management are as follows:

l Software activation

l Consistency check on software versions and hardware versions

l Version management such as querying software and hardware versions

l Upgrade of software versions

Alarm Management

The functions of alarm management are as follows:

l Querying real-time alarms and history alarms

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

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

l Supporting the alarm storage, interpretation, indication, masking, filtering, confirmation,clearing, post processing, and reporting functions

Environment Monitoring

To ensure the normal operation of the BTS equipment and to help you handle variousemergencies, the BTS provides a complete environment monitoring system.

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



7-3

Performance ManagementPerformance management is to measure and report performance counters based on servicesrequirements. The functions are as follows:

l Monitoring the performance of the internal and external telecommunications networks andgenerating alarms when the performance deteriorates

l Monitoring the running status of the BTS, such as monitoring the traffic volume on theports and measuring the technical data of the BTS

l Monitoring the usage of crucial components, such as the CPU and DSP on the board

Specific OM Functions of the DBS3900Table 7-1 describes the specific OM functions of the DBS3900 based on the Site MaintenanceTerminal, LMT, and M2000.


Product Description


Issue 03 (2008-06-30)

Table 7-1 Functions of the BTS OM system

MaintenanceObject

MaintenanceItems of the SiteMaintenanceTerminal

Maintenance Items ofthe LMT

MaintenanceItems of the M2000

Site View ResourcePerforming siteOpstartConducting RFcounters testsAssigning sitemanagement rightsPerforming forcedsoftware loadingSoftware activationResetting siteshierarchicallyTesting sitesEnvironmentMonitoringTesting thetransmissionperformanceViewing ringtopologyparametersViewing bar codesViewing the alarmdelay timeE1 BER DetectionManaging the RETantenna

Get Site Software VersionGet Site AttributesView ResourceMulti-site Software LoadMulti-site SoftwareActivationResetting siteshierarchicallyEnvironment MonitoringTesting sitesAlarm shieldingViewing the alarm delaytimeQuery Faults in MultipleBTSsTesting the transmissionperformanceViewing ring topologyparametersViewing bar codesMulti-site Software VersionQueryMulti-site Board MatchingQuerySite Board ParameterManagement dialog boxQuery Equipment RoomTemperatureBoard Bar Code ReportE1 BER DetectionAntenna Feeder ConnectionCheckManaging the RET antenna

Managing thereporting ofperformance dataManaging NE usersMonitoring NEStatusProviding centralizeduser managementMonitoring NEPerformanceMonitoring NE inReal TimeQuerying FileInformation in NE



7-5

MaintenanceObject




Cell Managing cellattributesManaging extendedcell attributesPerforming cellOpstartTesting the cellperformanceChange CellManagement State

Modify AdministrativeStatePerforming force handoversSend Cell System MessageQuery Frequency ScanConfigure Frequency Scan

CheckingDistribution of CellsChecking Basic CellConfigurationInformationChecking CCHConfigurationInformationChecking NeighborCellsMonitoring theconfiguration of anobjectSummarizing Alarmsof Monitored ObjectsBlocking/Unblocking Cells

BT Performing BTOpstartReinitializing theBTTRX Full PowerEmissionChange BTManagement StateTesting the BTView Channel State

- -


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MaintenanceObject




RC Managing RCattributesManaging RCextended attributesPerforming RCOpstartReinitializing theRCChange RCManagement StateQuerying theautomatic poweradjustment typeGet RC PowerMode

Modify AdministrativeStateTest TRX PerformanceQuery Power ModeQuery Automatic PowerCorrection TypeTest TRX LoopbackTest Idle TimeslotTest CODEC ModeReset TRXControlling TRX Power

-

Channel Managing channelattributes

Performing channelOpstart

Change ChannelManagement State

Conductingloopback tests

Modify AdministrativeStateMonitor Channel StatusMonitor ChannelInterference BandTest Channel LoopbackTesting ChannelPerformance

Checking Basic CellConfigurationInformationChecking CCHConfigurationInformation



7-7

MaintenanceObject




Board Configuring racksConfiguring boardsManaging boards

Query Board RunningSoftware VersionQuery Board MatchQuery Board Bar CodeViewing Board InformationMaintain ClockReset BoardSwitch BoardQuery Power Module StatusReset Smoke AlarmMaintain BatterySet/Query Power ModuleParametersTesting BTS BoardLoopbackQuerying the Cavity Stateand the Cavity FrequencySetting TMA FeederResetting the AuxiliaryEquipmentMaintaining the RETAntenna

Viewing NE BoardReportsQuerying InventoryData


Product Description


Issue 03 (2008-06-30)

8 Specifications of the DBS3900

About This Chapter

This describes the specifications of the DBS3900. The specifications cover items such as thecapacity, RF, engineering, surge protection, ports, environment, and compliant standards.

8.1 Capacity Specifications of the DBS3900This describes the capacity specifications of the DBS3900, which are represented by the numberof supported carriers and cells.

8.2 RF Specifications of the DBS3900This describes the RF specifications of the DBS3900. The RF specifications involve theoperating frequency band, transmitter, and receiver.

8.3 Engineering Specifications of the DBS3900This describes the engineering specifications of the DBS3900. The engineering specificationsinvolve the physical dimensions, equipment weight, power input, and power consumption.

8.4 Surge Protection Specifications of Ports on the DBS3900This describes the surge protection specifications of the external ports on the BBU3900 andRRU3004.

8.5 Ports on the DBS3900This describes the ports on the DBS3900. The ports consist of the grounding ports, power ports,transmission ports, alarm ports, clock ports, and other ports.

8.6 Compliant Standards of the DBS3900This describes the compliant standards of the DBS3900. The DBS3900 complies with thestandards of Electromagnetic Compatibility (EMC), acoustic noise, operating environment,transportation, storage, and anti-seismic performance.

8.7 Environmental Requirements of the DBS3900This describes the environmental requirements of the DBS3900. The environmentalrequirements consist of operating environment requirements, transportation requirements, andstorage requirements.

DBS3900 GSMProduct Description 8 Specifications of the DBS3900


8-1

8.1 Capacity Specifications of the DBS3900This describes the capacity specifications of the DBS3900, which are represented by the numberof supported carriers and cells.

Capacity of the BBU3900A BBU3900 supports a maximum of 36 carriers, and supports Abis over IP through softwareupgrade.

Capacity of the RRU Modulel An RRU module supports two carriers. Each RRU3004 consists of two RRU modules.

Therefore, an RRU3004 supports four carriers.l An RRU module supports only one cell in the case of diversity and two cells in the case of

no diversity.

8.2 RF Specifications of the DBS3900This describes the RF specifications of the DBS3900. The RF specifications involve theoperating frequency band, transmitter, and receiver.

Operating Frequency BandTable 8-1 lists the frequency bands supported by the DBS3900.

Table 8-1 Operating frequency bands of the DBS3900

OperatingFrequency Band

RX Frequency Band TX Frequency Band

PGSM 900 MHz 890 MHz to 915 MHz 935 MHz to 960 MHz

EGSM 900 MHz 880 MHz to 915 MHz 925 MHz to 960 MHz

DCS 1,800 MHz 1,710 MHz to 1,785MHz

1,805 MHz to 1,880 MHz

Transmitter SpecificationTable 8-2 lists the rated output power of the transmitter (RRU3004) of the DBS3900.

Table 8-2 Transmitter specification of the DBS3900

Operating FrequencyBand

Working Mode Output Power (GMSK/8PSKTOC)

PGSM 900 MHz/EGSM 900MHz

Non-combination 30 W/20 W

8 Specifications of the DBS3900DBS3900 GSM

Product Description


Issue 03 (2008-06-30)

Operating FrequencyBand

Working Mode Output Power (GMSK/8PSKTOC)

DCS 1,800 MHz 20 W/15 W


Combination 15 W/10 W

DCS 1,800 MHz 10 W/7.5 W


PBT 40 W/25 W

DCS 1,800 MHz 30 W/20 W

NOTE

l GMSK: Gaussian Minimum Shift Keying

l PSK: Phase Shift Keying

Receiver Specification

Table 8-3 lists the static receiver sensitivity of the DBS3900.

Table 8-3 Receiver sensitivity of the DBS3900

RX Diversity Mode Static Receiver Sensitivity

1-way -113 dBm (typical value)

2-way -116 dBm (typical value)

4-way -118.5 dBm (typical value)

8.3 Engineering Specifications of the DBS3900This describes the engineering specifications of the DBS3900. The engineering specificationsinvolve the physical dimensions, equipment weight, power input, and power consumption.

8.3.1 Engineering Specifications of the BBUThis describes the engineering specifications of the BBU.

8.3.2 Engineering Specifications of the RRUThis describes the engineering specifications of the RRU.

8.3.1 Engineering Specifications of the BBUThis describes the engineering specifications of the BBU.



8-3

Mechanical Dimensions

The BBU can be installed in a standard 19-inch cabinet. Table 8-4 lists the mechanicaldimensions of the BBU.

Table 8-4 Mechanical dimensions of the BBU

Item Width (mm) Depth (mm) Height (mm)

BBU 442 310 86 (2 U)

Weight

Table 8-5 lists the weight of the BBU.

Table 8-5 Weight of the BBU

Item Weight (kg)

BBU in typical configuration 7

BBU in maximum configuration 12

Power Input

Table 8-6 lists the power input of the BBU.

Table 8-6 Power input of the BBU

Power Type Typical Value Allowed 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

NOTE

l The BBU3900 supports two types of power input, namely, -48 V DC and +24 V DC.

l With an auxiliary power conversion system, 220 V AC power can be converted into -48 V DC powerfor the BBU3900.

Power Consumption

The typical power consumption of the BBU is 50 W.

8.3.2 Engineering Specifications of the RRUThis describes the engineering specifications of the RRU.


Product Description


Issue 03 (2008-06-30)

Mechanical DimensionsTable 8-7 lists the mechanical dimensions of the RRU.

Table 8-7 Mechanical dimensions of the RRU

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

RRU module (two TRXs,excluding the rack)

356 100 480

RRU3004 (four TRXs,including the rack)

410 247 556

WeightTable 8-8 lists the weight of the RRU.

Table 8-8 Weight of the RRU

Configuration Weight (kg)

RRU module (two TRXs, excluding the rack) 15

RRU3004 (four TRXs, including the rack) 38

Power InputTable 8-9 lists the power input of the RRU.

Table 8-9 Power input of the RRU

Power Type Typical Value Allowed Range

-48 V DC -48 V DC -36 V DC to -57 V DC

NOTEWith an auxiliary power conversion system, 220 V AC power can be converted into -48 V DC power forthe RRU3004.

Power ConsumptionThe power consumption of the DBS3900 in typical configuration is listed in Table 8-10.



8-5

Table 8-10 Total power consumption of the DBS3900 (with the RRU3004)

Configuration PowerConsumptionat the CabinetTop (W)

Working Mode Typical PowerConsumption (W)

S2/2/2 (900 MHz) 30 Non-combination 510

S4/4/4 (900 MHz) 15 Combination 730


S4/4/4 (1800 MHz) 10 Combination 730


NOTEThe typical power consumption is the measurement value when traffic volume is 30% of the maximumtraffic volume of the DBS3900.

8.4 Surge Protection Specifications of Ports on the DBS3900This describes the surge protection specifications of the external ports on the BBU3900 andRRU3004.

Surge Protection Specifications of the External Ports on the BBU3900Table 8-11 lists the surge protection specifications of the external ports on the BBU3900.

Table 8-11 Surge protection specifications of the external ports on the BBU3900

Port Surge Protection Mode Surge Current

Power supplyport

Differential mode 2 kA

Common mode 4 kA

E1 port Differential mode (UELP notconfigured)

250 A

Common mode (UELP not configured) 250 A

Differential mode (UELP configured) 3 kA

Common mode (UELP configured) 5 kA

GPS signalinput port

Differential mode (GPS surge protectorconfigured)

8 kA

Common mode (GPS surge protectorconfigured)

20 kA


Product Description


Issue 03 (2008-06-30)


Dry contactalarm port

Common mode 250 A

Surge Protection Specifications of the External Ports on the RRU3004

Table 8-12 lists the surge protection specifications of the external ports on the RRU3004.

Table 8-12 Surge protection specifications of the external ports on the RRU3004


-48 V DC power port Differential mode 10 kA

Common mode 15 kA

Duplex RF port Differential mode 8 kA

Common mode 40 kA

Dry contact alarm port Differential mode 3 kA

Common mode 5 kA

RET antenna port Differential mode 3 kA

Common mode 5 kA

NOTE

l The surge protection specifications of the DBS3900 are based on the surge waveform of 8/20 μs.

l The surge current, unless otherwise specified as the maximum discharge current, refers to a nominaldischarge current.

8.5 Ports on the DBS3900This describes the ports on the DBS3900. The ports consist of the grounding ports, power ports,transmission ports, alarm ports, clock ports, and other ports.

8.5.1 Ports of the BBUThe BBU ports consist of the power port, transmission ports, alarm ports, and other ports.

8.5.2 Ports on the RRU ModuleThis describes the ports on the RRU module. The ports on the RRU module are the groundingport, power ports, transmission ports, alarm port, and other ports.

8.5.1 Ports of the BBUThe BBU ports consist of the power port, transmission ports, alarm ports, and other ports.



8-7

Power Port

Table 8-13 Power port of the BBU

Port Connector Location Description

PWR 3V3 powerconnector

UPEU -48 V DC input

Transmission Ports

Table 8-14 Transmission ports of the BBU


INSIDE DB25 maleconnector

UELP Transfers the four E1/T1signals between the UELPand the GTMU.

OUTSIDE DB26 maleconnector

Provides the input andoutput of the four E1/T1signals between the BBUand the BSC.

CPRI0-CPRI5 SFP connector GTMU Provides the input andoutput of the optical andelectrical transmissionsignals between the BBUand the RF module.

E1/T1 DB26 maleconnector

Provides the input andoutput of the four E1/T1signals between the GTMUand the UELP or betweenthe GTMU and the BSC.

FE0 RJ45 connector A reserved port thatperforms the followingfunction:Connects the BBU to arouting device in theequipment room throughthe Ethernet cable totransmit networkinformation.


Product Description


Issue 03 (2008-06-30)


FE1 DLC connector A reserved port thatperforms the followingfunction:Connects the BBU to arouting device in theequipment room throughthe optical cable to transmitnetwork information.

Alarm Ports

Table 8-15 Alarm ports of the BBU

Name Connector Location Description

MON0 RJ45 connector UPEU module orUEIU board

Provides the input and output ofthe externally collectedenvironment monitoring signalsin the format of the RS485 frameto the GTMU.

MON1 RJ45 connector Reserved

EXT-ALM0 RJ45 connector Transmits the externallycollected environmentmonitoring signals in format ofthe dry contact signals to theGTMU.

EXT-ALM1 RJ45 connector Reserved

Other Ports

Table 8-16 Other ports of the BBU


ETH RJ45connector

GTMU Used for local maintenanceand commissioning.

USB USBconnector

A reserved port that performsthe following function:Enables the automaticsoftware upgrade from a USBdisk.



8-9


TST USBconnector

Tests the output clock signalsusing a tester.

8.5.2 Ports on the RRU ModuleThis describes the ports on the RRU module. The ports on the RRU module are the groundingport, power ports, transmission ports, alarm port, and other ports.

Grounding PortThe grounding bolt at the bottom of the RRU is used for grounding the RRU module.

Power PortTable 8-17 describes the power ports on the RRU module.

Table 8-17 Power ports on the RRU module

Port Port Type Quantity Connector

Power port -48 V DC power port 2 OT terminal

Transmission PortTable 8-18 describes the transmission ports on the RRU module.

Table 8-18 Transmission ports on the RRU module

Port Type Quantity Transmission Rate Connector

Optical/electrical port(CPRI)

2 1.2288 Gbit/s SFP connector

Alarm PortTable 8-19 describes the alarm port on the RRU module.

Table 8-19 Alarm port on the RRU module


Alarm port(EXT_ALM)

2-way dry contactalarm port

1 DB15 connector


Product Description


Issue 03 (2008-06-30)

Other PortsTable 8-20 describes the other ports on the RRU module.

Table 8-20 Other ports on the RRU module


Port for the RETantenna

AISG port 1 DB9 connector

RF port Port for the antennajumper

2 DIN roundwaterproofconnector

Port for the RFjumper betweencascaded RRUs

1 DB2W2 connector

8.6 Compliant Standards of the DBS3900This describes the compliant standards of the DBS3900. The DBS3900 complies with thestandards of Electromagnetic Compatibility (EMC), acoustic noise, operating environment,transportation, storage, and anti-seismic performance.

EMC StandardsThe DBS3900 meets the EMC requirements and complies with the following standards:

l R&Directive 99/5/EC

l 3GPP TS 25.113 V4.4.0 (2002-12)

l ETSI EN 301 489-1 V1.5.1 (2004-11)

l ETSI EN 301 908-1 V2.2.1 (2003-10)

l ITU-T SM 329-10(2003)

l FCC PART15

Acoustic NoiseThe acoustic noise specifications of the DBS3900 are as follows:

l The Sound Power Level (SPL) of acoustic noise produced by the operating BBU3900 islower than 45 dBA, as specified in the ETS300 753 standard.

l The RRU operates in mute mode.

Storage EnvironmentThe storage of the DBS3900 complies with the following standard:

ETSI EN 300019-1-1 V2.1.4 (2003-04) Class 1.2: "Weatherprotected, not temperature-controlled storage locations"



8-11

Transportation Environment

The transportation of the DBS3900 complies with the following standard:

ETSI EN 300019-1-2 V2.1.4 (2003-04) Class 2.3: "Public transportation"

Operating Environmentl The operation of the BBU3900 complies with ETSI EN 300019-1-3 V2.2.2 (2004-07) Class

3.1: "Temperature-controlled locations"

l The operating environment of the RRU3004 complies with the following standards:

– 3G TS25.141 V3.0.0

– ETSI EN 300019-1-4 V2.1.2 (2003-04) Class 4.1: "Non-weatherprotected locations"

Anti-Seismic Performancel The anti-seismic performance of the BBU3900 complies with the IEC 60068-2-57

(1999-11).

l The anti-seismic performance of the RRU3004 complies with the NEBS GR63 zone4.

8.7 Environmental Requirements of the DBS3900This describes the environmental requirements of the DBS3900. The environmentalrequirements consist of operating environment requirements, transportation requirements, andstorage requirements.

8.7.1 Working Environment Requirements of the DBS3900This describes the working environment requirements of the DBS3900.

8.7.2 Transportation Requirements of the DBS3900This describes the transportation requirements of the DBS3900.

8.7.3 Storage Requirements of the DBS3900This describes the storage requirements of the DBS3900.

8.7.1 Working Environment Requirements of the DBS3900This describes the working environment requirements of the DBS3900.

Climatic Requirements

Table 8-21 lists the climatic requirements for the working environment of the DBS3900.

Table 8-21 Climatic requirements of the DBS3900

Item Specification

Altitude ≤ 4,000 m

Air pressure 70 kPa to 106 kPa


Product Description


Issue 03 (2008-06-30)

Item Specification

Temperature l RRU: -40℃ to +45℃ (with solar radiation)

l RRU: -40℃ to +50℃ (without solar radiation)

l BBU: -20℃ to +55℃ (long-term working environment)

Temperature variation rate ≤ 3℃/min

Relative humidity l BBU: 5% to 95%

l RRU: 5% to 100%

Solar radiation Outdoors: ≤ 1,120 W/m2

Indoors: ≤ 700 W/m2

Thermal radiation ≤ 600 W/m2

Wind speed ≤ 67 m/s

Noise Indoor noise pressure level ≤ 60 dBAIndoor sound power < 7.2 belOutdoor noise pressure level ≤ 65 dBAOutdoor sound power in daytime ≤ 6.7 bel; outdoor soundpower at night ≤ 6.1 bel

Dustproof and waterproofcapabilities

l BBU: IP20

l RRU: IP65

Biological RequirementsThe working environment of the DBS3900 should meet the following biological requirements:

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

l There are no rodents such as rats.

Air Cleanliness RequirementsThe working environment of the DBS3900 should meet the following air cleanlinessrequirements:

l There is no explosive, conductive, magneto-conductive or corrosive dust in the air.

l The density of the physically active materials complies with the requirements of Table8-22.

Table 8-22 Requirements for the density of physically active materials

Physically ActiveMaterial

Unit Density

Suspended dust mg/m3 ≤ 0.01



8-13


Unit Density

Falling dust mg/(m2h) ≤ 10

Sand mg/m3 There is no visible sand.

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 the chemically active materials complies with the requirements of Table8-23.

Table 8-23 Requirements for the density of chemically active materials

Chemically ActiveMaterial

Unit Density

SO2 mg/m3 ≤ 1.50

NH3 mg/m3 ≤ 0.15

Cl2 mg/m3 ≤ 0.30

Mechanical Stress Requirements

Table 8-24 lists the mechanical stress requirements for the working environment of theDBS3900.

Table 8-24 Mechanical stress requirements

Item Subitem Specification

Sinusoidal vibration(ETSI requirements)

Offset ≤ 3.5 mm -

Acceleration - ≤ 10.0 m/s2

Frequency range 5 Hz to 9 Hz 9 Hz to 200 Hz

Sinusoidal vibration(GR63requirements)

Frequency range: 5-100-5 Hz; acceleration: 0.1 g; scanningfrequency: 0.1 oct/min; triaxial test

Unsteady impact Impact responsespectrum II

≤ 100 m/s2

Static payload 0


Product Description


Issue 03 (2008-06-30)

Item Subitem Specification

Anti-seismicrequirements

Earthquake Frequency range: 0.3 Hz to 50 HzZero Period Acceleration (ZPA): 1.5 g30s

Note:l Impact response spectrum refers to the maximum acceleration response curve generated

by the equipment under the specified impact excitation. Impact response spectrum II meansthat the duration of semi-sine impact response spectrum is 6 ms.

l Static payload refers to the capability of the equipment in a packing case to bear the pressurefrom the top in normal pile-up method.

8.7.2 Transportation Requirements of the DBS3900This describes the transportation requirements of the DBS3900.

Climatic RequirementsTable 8-25 lists the climatic requirements for the transportation environment of the DBS3900.

Table 8-25 Climatic requirements (transportation)

Item Range



Temperature -40℃ to +70℃

Temperature variation rate ≤ 3 ℃/min

Relative humidity 10% to 100%

Solar radiation ≤ 1,120 W/m2



Waterproofing RequirementsThe transportation environment of the DBS3900 should meet the following waterproofingrequirements:

l The package is intact.

l Waterproofing measures should be taken to prevent rainwater from entering the package.

l There should be no water accumulated inside transportation vehicles.



8-15

Biological Requirements

The transportation environment of the DBS3900 should meet the following biologicalrequirements:

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

l There should be no rodents, such as rats.

Air Purity Requirements

The transportation environment of the DBS3900 should meet the following air cleanlinessrequirements:

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

l The physically active material must meet the requirements listed in Table 8-26.

Table 8-26 Requirements for physically active material


Unit Density

Suspended dust (mg/m3) No requirement

Falling dust mg/(m2h) ≤ 3.0

Sand (mg/m3) ≤ 100

Remarks:l Suspended dust: diameter ≤ 75 μm



l The chemically active material must meet the requirements listed in Table 8-27.

Table 8-27 Requirements for chemically active material


Unit Density

SO2 (mg/m3) ≤ 0.30

H2S (mg/m3) ≤ 0.10

NO2 (mg/m3) ≤ 0.50

NH3 (mg/m3) ≤ 1.00

Cl2 (mg/m3) ≤ 0.10

HCl (mg/m3) ≤ 0.10


Product Description


Issue 03 (2008-06-30)


Unit Density

HF (mg/m3) ≤ 0.01

O3 (mg/m3) ≤ 0.05

Requirements for Mechanical StressTable 8-28 lists the mechanical stress requirements for the transportation environment of theDBS3900.

Table 8-28 Mechanical stress requirements (transportation)

Item Sub-Item Range

Sinusoidalvibration

Shift ≤ 7.5 mm - -

Acceleration - ≤ 20.0 m/s2 ≤ 40.0 m/s2

Frequencyrange

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

Randomvibration

Spectrumdensity ofacceleratedspeed

1 m2/s3 –3 dB Total mean squareroot acceleratedspeed: 0.781 Grms

Frequencyrange

5 Hz to 20 Hz 20 Hz to 200 Hz

Unsteadyimpact

Impactresponsespectrum II

≤ 300 m/s2

Static payload ≤ 10 kPa

Falling Falling When the mass is less than 15 kg, the free fall is less than orequal to 1.0 m.When the mass ranges from 100 kg to 200 kg, the free fall isless than or equal to 0.3 m.

Remarks:l Impact response spectrum refers to the maximum acceleration response curve generated


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



8-17

8.7.3 Storage Requirements of the DBS3900This describes the storage requirements of the DBS3900.

Climatic Requirements

Table 8-29 lists the climatic requirements for the storage environment of the DBS3900.

Table 8-29 Climatic requirements (storage)

Item Range



Temperature -40℃ to +70℃

Temperature variation rate ≤ 1 ℃/min

Relative humidity 10% to 100%

Solar radiation ≤ 1,120 W/m2



Waterproofing Requirements

The waterproofing requirements related to the indoor storage environment of the DBS3900 areas follows:

l There should not be water on the ground. No water is leaked on 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 you have to place the equipment outdoors, ensure the following:

l The package is intact.

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

l There should not be water on the ground and water should not enter the package.

l The package should not be exposed to direct sunlight.

Biological Requirements

The storage environment of the DBS3900 should meet the following biological requirements:

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 03 (2008-06-30)

Air Purity RequirementsThe storage environment of the DBS3900 should meet the following air cleanlinessrequirements:

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

l The physically active material must meet the requirements listed in Table 8-30.

Table 8-30 Requirements for physically active material


Unit Density

Suspended dust (mg/m3) ≤ 5.00

Falling dust mg/(m2h) ≤ 20.0

Sand (mg/m3) ≤ 300

Remarks:l Suspended dust: diameter ≤ 75 μm



l The chemically active material must meet the requirements listed in Table 8-31.

Table 8-31 Requirements for chemically active material


Unit Density

SO2 (mg/m3) ≤ 0.30

H2S (mg/m3) ≤ 0.10

NO2 (mg/m3) ≤ 0.05

NH3 (mg/m3) ≤ 1.00

Cl2 (mg/m3) ≤ 0.10

HCl (mg/m3) ≤ 0.10

HF (mg/m3) ≤ 0.01

O3 (mg/m3) ≤ 0.05

Requirements for Mechanical StressThe storage environment of the DBS3900 should meet the mechanical stress requirements listedin Table 8-32.



8-19

Table 8-32 Mechanical stress requirements (storage)

Item Sub-Item Range

Sinusoidal vibration Shift ≤ 7.0 mm -

Acceleration - ≤ 20.0 m/s2

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

Unsteady impact Impact responsespectrum II

≤ 250 m/s2

Static payload ≤ 5 kPa

Remarks:l Impact response spectrum refers to the maximum acceleration response curve generated


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


Product Description


Issue 03 (2008-06-30)

Index

DBS3900 GSMProduct Description Index


i-1

DBS3900 GSM Product Description-(V300R008_03)

Documents

s4 s4

hour backup

chemically

s4 s2

primary mouse

physically

s2 s2

item sinusoidal