DBS3900 GSM Technical Description(V100R012_06)(PDF)-En

DBS3900 GSMV100R012

Technical Description

Issue 06

Date 2011-03-30

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2011. 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 trademarks of Huawei Technologies Co., Ltd.All other trademarks and trade names mentioned in this document are the property of their respective holders. NoticeThe purchased products, services and features are stipulated by the contract made between Huawei and thecustomer. All or part of the products, services and features described in this document may not be within thepurchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information,and recommendations in this document are provided "AS IS" without warranties, guarantees or representationsof any kind, either express or implied.

The 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 all statements, information, andrecommendations in this document do not constitute the warranty of any kind, express or implied.

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

Bantian, LonggangShenzhen 518129People's Republic of China

Website: http://www.huawei.com

Email: [email protected]

Issue 06 (2011-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.

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http://www.huawei.com

mailto:[email protected]

About This Document

PurposeThis document describes the composition, orientation, software and hardware structure,subsystems, configuration type, signal flow, clock synchronization, topologies of the DBS3900GSM.

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

Product Name Product Version

DBS3900 GSM (hereinafter referred to asDBS3900)

V100R012

Intended AudienceThis document is intended for:

l Network plannersl Field engineersl System engineers

Organization1 Changes in the DBS3900 GSM Technical Description

This section describes the changes in the DBS3900 GSM Technical Description.

2 DBS3900 Product Family

This chapter describes the functional modules and auxiliary equipment in the DBS3900 productfamily.

3 Logical Structure of the DBS3900

This describes the internal logical units of the BBU and RRU.

DBS3900 GSMTechnical Description About This Document


iii

4 Software Structure of the BTS

The 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.

5 DBS3900 Monitoring Schemes

The monitoring system of the DBS3900 monitors the power supply, fans, and environment.

6 Clock Synchronization Modes of the DBS3900

The DBS3900 supports four types of reference clocks: IP clock, line clock, free-run clock, andexternal clock.

7 Surge Protection Specifications of Ports on the DBS3900

This describes the surge protection specifications of the external ports on the BBU3900 andRRU.

8 CPRI Cable Connections of the RRUs

The RRUs support star, chain, and ring topologies.

9 RRU3004 Configuration

RRU3004 is a double-transceiver remote radio unit and supports two carriers. Differentconfigurations must be chosen in different topologies.


RRU3008 is a multi-carrier remote radio unit and supports eight carriers. Differentconfigurations must be chosen in different topologies.

11 Typical Scenarios of the DBS3900 (with the DC RRU)

This describes the typical installation scenarios of the DBS3900 configured with the BBU3900and DC RRU.

12 Typical Scenarios of the DBS3900 (with the AC RRU)

This describes the typical scenarios of the DBS3900 configured with the BBU3900 and ACRRU.

ConventionsSymbol Conventions

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

Symbol Description

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

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

About This DocumentDBS3900 GSM


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Issue 06 (2011-03-30)

Symbol Description

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

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

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

General Conventions

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

Convention Description

Times New Roman Normal paragraphs are in Times New Roman.

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

Italic Book titles are in italics.

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

Command Conventions

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


Boldface The keywords of a command line are in boldface.

Italic Command arguments are in italics.

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

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

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

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

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

DBS3900 GSMTechnical Description About This Document


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GUI Conventions

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


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

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

Keyboard Operations

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

Format Description

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

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

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

Mouse Operations

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

Action Description

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

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

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

About This DocumentDBS3900 GSM


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Contents

About This Document...................................................................................................................iii

1 Changes in the DBS3900 GSM Technical Description.......................................................1-1

2 DBS3900 Product Family..........................................................................................................2-1

3 Logical Structure of the DBS3900............................................................................................3-13.1 Logical Structure of the BBU..........................................................................................................................3-23.2 Logical Structure of the RRU..........................................................................................................................3-3

4 Software Structure of the BTS.................................................................................................4-1

5 DBS3900 Monitoring Schemes................................................................................................5-1

6 Clock Synchronization Modes of the DBS3900...................................................................6-1

7 Surge Protection Specifications of Ports on the DBS3900..................................................7-1

8 CPRI Cable Connections of the RRUs...................................................................................8-1

9 RRU3004 Configuration............................................................................................................9-1

10 RRU3008 Configuration........................................................................................................10-1

11 Typical Scenarios of the DBS3900 (with the DC RRU)..................................................11-111.1 BBU3900 Outdoors and RRU3004 Outdoors.............................................................................................11-2

11.1.1 Scenario 1: -48 V DC Power Input....................................................................................................11-211.1.2 Scenario 2: 220 V AC Power Input....................................................................................................11-3

11.2 BBU3900 Indoors and RRU3004 Indoors..................................................................................................11-811.2.1 Scenario 1: -48 V DC Power Input....................................................................................................11-911.2.2 Scenario 2: 220 V AC Power Input..................................................................................................11-13

11.3 BBU3900 Indoors and RRU3004 Outdoors..............................................................................................11-1911.3.1 Scenario 1: -48 V DC Power Input..................................................................................................11-1911.3.2 Scenario 2: 220 V AC Power Input..................................................................................................11-20

11.4 BBU3900 Outdoors and RRU3008 Outdoors...........................................................................................11-2111.4.1 Scenario 1: -48 V DC Power Input..................................................................................................11-2111.4.2 Scenario 2: 220 V AC Power Input..................................................................................................11-23

11.5 BBU3900 Indoors and RRU3008 Indoors................................................................................................11-2811.5.1 Scenario 1: -48 V DC Power Input..................................................................................................11-2911.5.2 Scenario 2: 220 V AC Power Input..................................................................................................11-29

DBS3900 GSMTechnical Description Contents


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11.6 BBU3900 Indoors and RRU3008 Outdoors..............................................................................................11-3011.6.1 Scenario 1: -48 V DC Power Input..................................................................................................11-3111.6.2 Scenario 2: 220 V AC Power Input..................................................................................................11-31

12 Typical Scenarios of the DBS3900 (with the AC RRU)...................................................12-112.1 BBU3900 Indoors and RRU Indoors..........................................................................................................12-212.2 BBU3900 Indoors and RRU Outdoors........................................................................................................12-4

ContentsDBS3900 GSM


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Figures

Figure 2-1 DBS3900 product family....................................................................................................................2-1Figure 3-1 Logical structure of the BBU3900......................................................................................................3-2Figure 3-2 Logical structure of the RRU3004......................................................................................................3-4Figure 3-3 Logical structure of the RRU3008......................................................................................................3-4Figure 4-1 Software structure of the BTS............................................................................................................4-1Figure 5-1 Monitoring ports on the BBU.............................................................................................................5-1Figure 5-2 Components of the DBS3900 monitoring system..............................................................................5-2Figure 8-1 Typical topologies of the RRUs......................................................................................................... 8-1Figure 9-1 RF111_1A.......................................................................................................................................... 9-2Figure 9-2 RF211_1A.......................................................................................................................................... 9-3Figure 9-3 RF212_1A.......................................................................................................................................... 9-4Figure 9-4 RF222_1A.......................................................................................................................................... 9-4Figure 9-5 RF112_2B...........................................................................................................................................9-5Figure 10-1 RF111_1A......................................................................................................................................10-3Figure 10-2 RF112_2B.......................................................................................................................................10-4Figure 10-3 RF211_1A......................................................................................................................................10-4Figure 10-4 RF212_1A......................................................................................................................................10-5Figure 10-5 RF222_1A......................................................................................................................................10-6Figure 11-1 Installation scenario of BBU+RRU+TMC.....................................................................................11-2Figure 11-2 Installation scenario of OMB+BBU+DCDU03B+RRU................................................................11-3Figure 11-3 Installation scenario 1 of BBU+RRU+APM30+BBC....................................................................11-4Figure 11-4 Installation scenario 2 of BBU+RRU+APM30+BBC....................................................................11-6Figure 11-5 Installation scenario of BBU+RRU+APM30.................................................................................11-7Figure 11-6 Installation scenario of OMB+BBU+4815+RRU..........................................................................11-8Figure 11-7 Indoor centralized installation scenarios of the BBU and RRUs (S2)............................................11-9Figure 11-8 Indoor centralized installation scenarios of the BBU and RRUs (S4)..........................................11-10Figure 11-9 Indoor separate installation scenarios of the BBU and RRUs (S2+S2).......................................11-11Figure 11-10 Indoor separate installation scenarios of the BBU and RRUs (S4+S4).....................................11-12Figure 11-11 Indoor centralized installation scenarios of the BBU and RRUs (S2)........................................11-14Figure 11-12 Indoor centralized installation scenarios of the BBU and RRUs (S4)........................................11-15Figure 11-13 Indoor separate installation scenarios of the BBU and RRUs (S2+S2).....................................11-16Figure 11-14 Indoor separate installation scenarios of the BBU and RRUs (S4+S2).....................................11-18Figure 11-15 Installation scenario of BBU+RRU+DCDU-03B......................................................................11-20

DBS3900 GSMTechnical Description Figures


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Figure 11-16 Installation scenario of BBU+RRU+PS4890+DCDU-03B........................................................11-20Figure 11-17 Installation scenario of BBU+RRU+TMC.................................................................................11-21Figure 11-18 Installation scenario of OMB+BBU+DCDU03B+RRU............................................................11-22Figure 11-19 Installation scenario 1 of BBU+RRU+APM30+BBC................................................................11-24Figure 11-20 Installation scenario 2 of BBU+RRU+APM30+BBC................................................................11-25Figure 11-21 Installation scenario of BBU+RRU+APM30.............................................................................11-27Figure 11-22 Installation scenario of OMB+BBU+4815+RRU......................................................................11-28Figure 11-23 Indoor centralized installation scenario of the BBU and RRU...................................................11-29Figure 11-24 Indoor centralized installation scenario of the BBU and RRU...................................................11-30Figure 11-25 Installation scenario of BBU+RRU+DCDU-03B......................................................................11-31Figure 11-26 Installation scenario of BBU+RRU+PS4890+DCDU-03B........................................................11-32Figure 12-1 Installation scenario of the BBU3900 and RRU (1).......................................................................12-2Figure 12-2 Installation scenario of the BBU3900 and RRU (2).......................................................................12-3Figure 12-3 Installation scenario of the BBU3900 and RRU (3).......................................................................12-4Figure 12-4 Installation scenario of the BBU3900 and RRU (1).......................................................................12-5Figure 12-5 Installation scenario of the BBU3900 and RRU (2).......................................................................12-6Figure 12-6 Installation scenario of the BBU3900 and RRU (3).......................................................................12-7

FiguresDBS3900 GSM


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Tables

Table 2-1 Functional modules of the DBS3900...................................................................................................2-2Table 2-2 Auxiliary equipment of the DBS3900..................................................................................................2-2Table 5-1 Functions of the monitoring system.....................................................................................................5-2Table 7-1 Surge protection specifications of the external ports on the BBU3900...............................................7-1Table 7-2 Surge protection specifications of the external ports on the RRU3004 and RRU3008 V1.................7-2Table 7-3 Surge protection specifications of the external ports on the RRU3008 V2.........................................7-2Table 8-1 Three typical topologies.......................................................................................................................8-1Table 8-2 CPRI port specifications...................................................................................................................... 8-2Table 9-1 Major ports on RRU3004.....................................................................................................................9-1Table 9-2 Basic configurations.............................................................................................................................9-2Table 9-3 Typical configurations......................................................................................................................... 9-5Table 10-1 Major ports on RRU3008 V1...........................................................................................................10-1Table 10-2 Ports on RRU3008 V2.....................................................................................................................10-2Table 10-3 Basic configurations.........................................................................................................................10-2Table 10-4 Typical configurations.....................................................................................................................10-6

DBS3900 GSMTechnical Description Tables


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1 Changes in the DBS3900 GSM TechnicalDescription

This section describes the changes in the DBS3900 GSM Technical Description.

06 (2011-03-30)

This is the fifth commercial release of V100R012.

Compared with issue 05 (2011-01-20), this issue includes the following new topic:

l 9 RRU3004 Configuration

l 10 RRU3008 Configuration

Compared with issue 05 (2011-01-20), this issue does not incorporate any changes.

Compared with issue 05 (2011-01-20), this issue does not exclude any topics.

05 (2011-01-20)

This is the fourth commercial release of V100R012.

Compared with issue 04 (2010-11-30), this issue includes the following new topic:

l 8 CPRI Cable Connections of the RRUs



04 (2010-11-30)

This is the third commercial release of V100R012.

Compared with issue 03 (2010-09-27), this issue does not include any new topics.

Compared with issue 03 (2010-09-27), this issue incorporates the following change:

DBS3900 GSMTechnical Description 1 Changes in the DBS3900 GSM Technical Description


1-1

Topic Change Description

7 Surge Protection Specifications of Portson the DBS3900

Surge protection specifications are modified.


03 (2010-09-27)This is the second commercial release of V100R012.


Compared with issue 02 (2010-05-30), this issue incorporates the following changes:

Topic Change Description

About This Document The version V300R012 is changed toV100R012.

3.2 Logical Structure of the RRU Function description of control modules isadded.


02 (2010-05-30)This is the first commercial release of V100R012.




01 (2010-04-10)This is the draft release of V100R012.

Compared with issue 05 (2010-03-15) of the V300R009, this issue does not include any newtopics.

Compared with issue 05 (2010-03-15) of the V300R009, this issue does not incorporate anychanges.

Compared with issue 05 (2010-03-15) of the V300R009, this issue does not exclude any topics.

1 Changes in the DBS3900 GSM Technical DescriptionDBS3900 GSM


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2 DBS3900 Product Family

This chapter describes the functional modules and auxiliary equipment in the DBS3900 productfamily.

Functional Modules of the DBS3900The functional modules of the DBS3900 are the BBU3900 and the RRU. The RRU is categorizedinto two types: DC RRU and AC RRU. The DC RRU supports DC power inputs and the ACRRU supports AC power inputs. Both the DC RRU and AC RRU have the RRU3004 andRRU3008 models. Figure 2-1 shows the DBS3900 product family.

Figure 2-1 DBS3900 product family

DBS3900 GSMTechnical Description 2 DBS3900 Product Family


2-1

Table 2-1 describes the functions of the functional modules.

Table 2-1 Functional modules of the DBS3900

FunctionalModule

Description

BBU3900 The BBU3900 is a baseband control unit. It provides ports for connectionsto the BSC and to the RRU, performs centralized management of the entireDBS3900 in terms of Operation and Maintenance (OM) and signalingprocessing, and provides the system clock.

RRU3004 The RRU3004 is an outdoor remote radio unit. It processes RF and basebandsignals. Each RRU module supports two carriers at the maximum.

RRU3008 The RRU3008 is an outdoor remote radio unit. It processes RF and basebandsignals. Each RRU module supports more than two carriers.

Auxiliary Equipment of the DBS3900

Table 2-2 describes the auxiliary equipment of the DBS3900. The DBS3900 can be configuredwith one or more types of auxiliary equipment.

Table 2-2 Auxiliary equipment of the DBS3900

AuxiliaryEquipment

Description

APM30 The APM30 consists of the power cabinet, battery cabinet, and transmissioncabinet.The APM30 provides an auxiliary solution to the outdoor applications ofHuawei wireless products. It supplies DC power and backup power to thedistributed or separated BTSs in outdoor scenarios. It can also provide spacefor installing the BBU and transmission devices outdoors.For detailed functions of the APM30, see the APM30 User Guide.

APM30H The APM30H consists of the APM30H power cabinet, IBBS200T, andTMC11H.The APM30H provides an auxiliary solution to the outdoor applications ofHuawei wireless products. It supplies DC power and backup power to thedistributed or separated BTSs in outdoor scenarios. It can also provide spacefor installing the BBU and transmission devices outdoors.For detailed functions of the APM30H, see the APM30H User Guide.

IBBS The IBBS is a battery cabinet. Its functions are as follows:l Supplying -48 V DC power outputl Housing batteries of different sizesl Supporting serial or parallel connection between battery groupsFor detailed functions of the IBBS, see the IBBS User Guide.

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AuxiliaryEquipment

Description

DCDU-03B The DCDU-03B is a DC power distribution box. It provides multiple DCpower outputs.

PS4890 The PS4890 is an indoor power cabinet. It provides DC power andinstallation space for customer equipment. When installed with batterygroups, the PS4890 can also provide power backup.

EMUA The EMUA is an environment monitoring device. Its functions are asfollows:l Monitoring environmentl Monitoring entry into the associated equipmentl Monitoring power distributionFor detailed functions of the EMUA, see the EMUA User Guide.

AC powersurgeprotection box

When the AC RRU is installed outdoors, the AC power surge protection boxis required to provide surge protection for the AC RRU.

OMB The Outdoor Mini Box (OMB) is an outdoor BBU subrack, which providesDC power and installation space for the customer equipment.

DBS3900 GSMTechnical Description 2 DBS3900 Product Family


2-3

3 Logical Structure of the DBS3900

About This Chapter

This describes the internal logical units of the BBU and RRU.

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

3.2 Logical Structure of the RRUAn RRU module consists of the high-speed interface unit, signal processing unit, power amplifier(PA), dual duplexer, and low noise amplifier (LNA).

DBS3900 GSMTechnical Description 3 Logical Structure of the DBS3900


3-1

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

Figure 3-1 shows the logical structure of the BBU3900.

Figure 3-1 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 Connects the BTS to the BSC.l Exchanges data between the E1 link and the DBUS.l Synchronizes 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 Supports the protocols such as UART and HDLC.

3 Logical Structure of the DBS3900DBS3900 GSM



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l Controls the BTS interface unit to enable the communication between the BBU and theBSC.

l Controls the high-speed interface unit in the BBU to enable the communication betweenthe BBU and the RRU.

l Performs the clock-related functions, that is, provides timing signals, manages BTS clocks,and supports external synchronization clock input.

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

l Receives uplink baseband data from the RRU.l Transmits downlink baseband data to the RRU.l Provides up to six SFP optical ports per BBU3900.

Clock UnitThe clock unit performs the following functions:

l Provides the high-accuracy clock source for the BTS and provides the system clock basedon this clock source.

l Checks the phase-locking status, provides software phase-locking, adjusts DA values, andgenerates frame numbers.

Monitoring UnitThe monitoring unit collects the information of Boolean alarms and reports the alarm informationto the central processing unit.

3.2 Logical Structure of the RRUAn RRU module consists of the high-speed interface unit, signal processing unit, power amplifier(PA), dual duplexer, and low noise amplifier (LNA).

Figure 3-2 shows the logical structure of the RRU3004.



3-3

Figure 3-2 Logical structure of the RRU3004

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

Figure 3-3 shows the logical structure of the RRU3008.

Figure 3-3 Logical structure of the RRU3008

RXM_OUT: RRU RX main output for cascaded RRUmodules

RXM_IN: RRU RX diversity input for cascaded RRUmodules

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




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l Receives downlink data from the upper-level equipment, such as the BBU.l Transmits uplink data to the upper-level equipment, such as the BBU.l Transfers data between cascaded RRU modules through the CPRI electrical ports.

Signal Processing UnitThe signal processing unit consists of two uplink RX channels, two downlink TX channels, anda control module. The signal processing unit processes baseband signals and RF signals. Thebaseband signal processing involves decoding GMSK and 8PSK baseband signals.

The uplink RX channels perform the following functions:

l Down-converts the RX signals into Intermediate Frequency (IF) signals.l Amplifies the IF signals and performs IQ demodulation.l Performs analog-to-digital (A/D) conversion through the ADC.l Performs sampling of digital signals.l Performs matched filtering.l Performs Digital Automatic Gain Control (DAGC).l Processes data and assembles the data into packets.

The downlink TX channels perform the following functions:

l Disassembles the packaged signals (timing signals, control signals, and data signals) fromthe BBU and sends them to associated units.

l Performs coding, modulation, shaping, and filtering of downlink signals.l Performs digital-to-analog (D/A) conversion through the DAC and performs IQ

modulation.l Up-converts RF signals to the TX band.

The processing unit for baseband performs the following functions:

l receives demodulated and decodes signals.l codes, modulates, shapes, and filters downlink signals.

The control module performs the following functions:

l Initializes and loads the RRU.l Collects alarm information and reports the board status.l Receives configuration commands from the BBU and performs configuration management

of other modules.l Operates and maintains the RRU.

PAThe PA performs the following functions:

l Combines or divides the signals of the two carriers.l Amplifies the low-power RF signals sent from the signal processing unit.

Dual DuplexerThe dual duplexer performs the following functions:



3-5

l Multiplexes RX signals and TX signals so that they can share an antenna channel.l Filters the RX signals and TX signals.

LNAThe LNA amplifies the signals received from the antennas.

RXThe RX down-converts the LAN signals into IF signals. After the RX amplifies the IF signals,it sends the signals to the ADC.




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4 Software Structure of the BTS

The 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 4-1 shows the software structure of the BTS.

Figure 4-1 Software structure of the BTS

Data center

Signalingprotocol software OM software

Platform software

Platform Software

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

l Timing management

l Task management

l Memory management

l Module management

l Managing the loading and running of the application software

l Providing the message forwarding mechanism between modules

DBS3900 GSMTechnical Description 4 Software Structure of the BTS


4-1

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 protocoll Processing the transport network layer protocol, which performs transport data

configuration, ALCAP processing, and SAAL processingl Managing the internal logical resources (such as cells and channels) of the BTS and the

mapping 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 managementl Data configurationl Performance managementl Commissioning managementl Alarm managementl Software managementl Tracing managementl Security managementl Backup managementl Log management

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

4 Software Structure of the BTSDBS3900 GSM



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5 DBS3900 Monitoring Schemes

The monitoring system of the DBS3900 monitors the power supply, fans, and environment.

Monitoring Ports on the BBUFigure 5-1 shows the monitoring ports on the BBU.

Figure 5-1 Monitoring ports on the BBU

l The BBU can provide a maximum of 2 RS485 buses and 16 Boolean signal inputs.l The modules connected to RS485 bus 0 cannot change to be connected to RS485 bus 1,

and the other way round.

Components of the Monitoring SystemFigure 5-2 shows the components of the DBS3900 monitoring system.

DBS3900 GSMTechnical Description 5 DBS3900 Monitoring Schemes


5-1

Figure 5-2 Components of the DBS3900 monitoring system

Door sensor of thetransmission cabinet User interface

DCDU-03 of thetransmission cabinet

APMI of thetransmission cabinet

BSC

BBU

Boolean0~15

Door status sensor of the power cabinet

Door status sensor of the battery cabinet

Temperature sensor ofthe battery cabinet

EMUA

RS485 bus0

RS485 bus1

PMU

APMI

Functions of the Monitoring System

Table 5-1 describes the functions of the monitoring system.

Table 5-1 Functions of the monitoring system

Module Monitoring Function

EMUA l Communicates with the BBU through the RS485 port, through whichtwo-channel RS485 signals are transmitted.

l Detects the input voltage.l Provides ports for connections to the humidity and temperature

sensor (12 V DC/24 V DC current type).l Provides ports for detecting the Boolean input signals of dry contact

and OC type.l Provides ports for controlling six external Boolean outputs of relay

node type.

PMU in theAPM30

l Communicates with the BBU through the RS232/RS422 serial port.l Manages the power system and the battery recharging and

discharging.l Detects and reports water damage alarms, smoke alarms, door status

alarms, and standby Boolean value alarms, and reports ambienthumidity and temperature, battery temperature, and standby analogvalues.

l Detects power distribution and reports alarms.

DCDU-03 Monitors surge protection failure of DC.

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Issue 06 (2011-03-30)

6 Clock Synchronization Modes of theDBS3900

The DBS3900 supports four types of reference clocks: IP clock, line clock, free-run clock, andexternal clock.

IP ClockThe IP clock acts as the clock source of the DBS3900 when the BTS uses the IP over FEtransmission mode. The IP clock requires the configuration of the IP clock server in the network.The IP clock server carries the reference clock information in the UDP data packet, and thentransmits the clock packets to the BTS. After receiving these clock packets, the BTS uses theclock signals interpreted from the packets.

Line ClockThe BBU3900 directly extracts the clock from the E1/T1 interface. Then, the BBU exports theprecise 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 theBTS. The line clock consists of the trace BSC clock and trace transmission clock. The BTSextracts the clock signals from the BSC through the E1/T1 interface and uses them as thereference clock source. When the transmission mode of the BTS is upgraded from E1/T1 modeto IP mode, if there is no IP clock, the BTS extracts the clock signals from the transmissionnetwork through the E1/T1 interface and use them as the reference clock source.

Free-Run ClockIn the absence of external clocks, the internal free-run clock ensures that the BTS keeps workingproperly for at least ninety days.

External ClockIf the BBU3900 is configured with the USCU, the USCU can receive the external clock signalsfor the GTMU. The USCU supports clock signals including the GPS clock signal, RGPS clocksignal, and BITS clock signal.

DBS3900 GSMTechnical Description 6 Clock Synchronization Modes of the DBS3900


6-1

7 Surge Protection Specifications of Ports onthe DBS3900

This describes the surge protection specifications of the external ports on the BBU3900 andRRU.

Surge Protection Specifications of the External Ports on the BBU3900NOTE

l Unless otherwise specified, the surge protection specifications depend on the surge waveform of 8/20 μs.

l All the discharge current items, unless otherwise specified as maximum discharge current, refer to nominaldischarge current.

Table 7-1 lists the surge protection specifications of the external ports on the BBU3900.

Table 7-1 Surge protection specifications of the external ports on the BBU3900

Port Surge Protection Mode Surge Current

Power supplyport

Differential mode 2 kV (1.2/50 μs)

Common mode 4 kV (1.2/50 μs)

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)

40 kA

Dry contactalarm port,RS485 port

Differential mode (surge protector notconfigured)

250 A

DBS3900 GSMTechnical Description 7 Surge Protection Specifications of Ports on the DBS3900


7-1


Common mode (surge protector notconfigured)

250 A

Differential mode (surge protectorconfigured)

3 kA

Common mode (surge protectorconfigured)

5 kA

Surge Protection Specifications of the External Ports on the RRU

Table 7-2 lists the surge protection specifications of the external ports on the RRU3004 andRRU3008 V1.

Table 7-2 Surge protection specifications of the external ports on the RRU3004 and RRU3008V1


-48 V DC power port Differential mode 10 kA

Common mode 20 kA

AC power port Differential mode 40 kA

Common mode 40 kA

RF port Differential mode 8 kA

Common mode 40 kA

Dry contact alarm port Differential mode 250 A

Common mode 250 A

RET antenna port Differential mode 3 kA

Common mode 5 kA

Table 7-3 lists the surge protection specifications of the external ports on the RRU3008 V2.

Table 7-3 Surge protection specifications of the external ports on the RRU3008 V2


-48 V DC power port Differential mode 10 kA

Common mode 20 kA

AC power port Differential mode 40 kA

7 Surge Protection Specifications of Ports on the DBS3900DBS3900 GSM



Issue 06 (2011-03-30)


Common mode 40 kA

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

DBS3900 GSMTechnical Description 7 Surge Protection Specifications of Ports on the DBS3900


7-3

8 CPRI Cable Connections of the RRUs

The RRUs support star, chain, and ring topologies.

Figure 8-1 shows the typical topologies of the RRUs.

Figure 8-1 Typical topologies of the RRUs

Table 8-1 describes three typical topologies.

Table 8-1 Three typical topologies

Topology Advantage Disadvantage

Star l Installation and maintenanceare easy.

l Transmission reliability is high.When an RRU or optical cableis faulty, only one sector isaffected.

Compared with other topologies,this topology requires largenumber of optical cables.

DBS3900 GSMTechnical Description 8 CPRI Cable Connections of the RRUs


8-1

Topology Advantage Disadvantage

Chain The cost of transmissionequipment is low.

l The number of cascading levelsand cascading distances arerestricted.

l Faults in an upper-level RRUmay affect lower-level RRUs.

Ring Transmission reliability isguaranteed.

Based on the distance between a BBU and an RRU, CPRI networking supports short-distanceremote and long-distance remote networking.

l For the short-distance remote networking, the longest distance between an RRU and theBBU on a CPRI chain does not exceed 100 m.

l For the long-distance remote networking, the longest distance between an RRU and theBBU on a CPRI chain ranges from 100 m to 40,000 m.

Different CPRI optical cables are used in the two types of networking. For details, see chapterCPRI Optical Cable in the BBU3900 Hardware Description.

Table 8-2 provides the specifications of CPRI ports on the GTMU and RRU.

Table 8-2 CPRI port specifications

Board orModule

Numberof CPRIPorts

CPRIData Rate

Topology NumberofSupported TRXs/Carriers

Cascading Levels

MaximumDistancefrom theBBU

GTMU

6 1.25 Gbit/s Star, chain,or ring

36 TRXs - -

GTMUb

6 1.25 Gbit/sor 2.5 Gbit/s

Star, chain,or ring

36 TRXs - -

RRU3004


2 carriers 6 levels 40 km

RRU3008


6 carriers 6 levels 40 km

8 CPRI Cable Connections of the RRUsDBS3900 GSM



Issue 06 (2011-03-30)


RRU3004 is a double-transceiver remote radio unit and supports two carriers. Differentconfigurations must be chosen in different topologies.

PortTable 9-1 describes major ports on RRU3004.

Table 9-1 Major ports on RRU3004

Type Silkscreen Description

Port for transceiving RFsignals

ANT_TX/RXA andANT_TX/RXB

The two ports, each of which is usedto transmit and receive RF signals,connect to the antenna systemthrough antenna channel 1 andantenna channel 2 respectively.

CPRI port TX RX CPRI_W The port is a westbound optical/electrical port and it is used to connectto the BBU or an upper-level RRU.

TX RX CPRI_E The port is an eastbound optical/electrical port and it is used to connectto a lower-level RRU.

Interconnection port forreceiving RF signals

RX_IN/OUT The port is used to transmit andreceive the diversity signals receivedthrough an antenna channel.

Basic ConfigurationsTable 9-2 lists the basic configurations of an RRU3004 serving only one sector.

The format of the description of the basic configuration is RF[F][TX][RX]_[C][TYPE]. Where,

l F indicates the number of antenna channels for an RF module.l TX indicates the number of transmit channels for an RF module.

DBS3900 GSMTechnical Description 9 RRU3004 Configuration


9-1

l RX indicates the number of receive channels for an RF module.l C indicates the number of CPRI links connecting RF modules with the GTMU board.l TYPE indicates the CPRI network topologies applied to connect RF modules with the BBU.

If the value of TYPE is A, the star topology is applied. If the value of TYPE is B, the chaintopology is applied.

Table 9-2 Basic configurations

BasicConfiguration

Number ofModules

SendingReceiving Mode

HardwareConfiguration

RF111_1A 1 Single feeder[1TX 1RX]

Figure 9-1

RF211_1A 1 Double feeder[1TX 1RX]

Figure 9-2


Figure 9-3


Figure 9-4

RF112_2B 2 Single feeder[1TX 2RX]

Figure 9-5

RF111_1AAn RRU3004 connects to the antenna system through ANT_TX/RXA. Antenna channel 1transmits and receives signals. The star topology is applied to connect the BBU with theRRU3004.

Figure 9-1 RF111_1A

9 RRU3004 ConfigurationDBS3900 GSM



Issue 06 (2011-03-30)

RF211_1AAn RRU3004 connects to the antenna system through ANT_TX/RXA and ANT_TX/RXB.Antenna channel 1 transmits signals while antenna channel 2 receives signals. The star topologyis applied to connect the BBU with the RRU3004.

Figure 9-2 RF211_1A

RF212_1AAn RRU3004 connects to the antenna system through ANT_TX/RXA and ANT_TX/RXB.Antenna channel 1 transmits and receives signals while antenna channel 2 receives signals only.The star topology is applied to connect the BBU with the RRU3004.



9-3

Figure 9-3 RF212_1A

RF222_1A

An RRU3004 connects to the antenna system through ANT_TX/RXA and ANT_TX/RXB. Bothantenna channel 1 and antenna channel 2 transmit and receive signals. The star topology isapplied to connect the BBU with the RRU3004.

Figure 9-4 RF222_1A




Issue 06 (2011-03-30)

RF112_2B

Two RRU3004 connect to the antenna system through ANT_TX/RXA. Antenna channel 1transmits and receives signals. RX_IN/OUT on the two RRU3004 interconnect to transferdiversity signals. The chain topology is applied to connect the BBU with one RRU3004.

Figure 9-5 RF112_2B

Typical Configurations

Table 9-3 describes the typical configurations of RRU3004 in different scenarios.

Table 9-3 Typical configurations

Scenario

Number ofModules

Send Mode Typical Configuration

S1 1 Transmit diversity RF222_1A

Independent transmit l RF111_1Al RF212_1Al RF222_1A

S2 1 Independent transmit orcombination

l RF111_1Al RF212_1Al RF222_1A



9-5

Scenario

Number ofModules


2 PBT RF112_2B


RF112_2B


l RF112_2Bl RF111_1A + RF111_1A




Issue 06 (2011-03-30)


RRU3008 is a multi-carrier remote radio unit and supports eight carriers. Differentconfigurations must be chosen in different topologies.

PortTable 10-1 describes major ports on RRU3008 V1.

Table 10-1 Major ports on RRU3008 V1





CPRI port TX RX CPRI_W The port is a westbound optical/electrical port and it is used to connectto the BBU or an upper-level RRU.

TX RX CPRI_E The port is an eastbound optical/electrical port and it is used to connectto a lower-level RRU.



Table 10-2 describes ports on RRU3008 V2.



10-1

Table 10-2 Ports on RRU3008 V2





CPRI port RX TX CPRI0 The port is used to connect to theBBU or an upper-level RRU.

TX RX CPRI1 The port is used to connect to a lower-level RRU.



Basic Configurations

Table 10-3 lists the basic configurations of an RRU3008 serving only one sector.

The format of the description of the basic configuration is RF[F][TX][RX]_[C][TYPE]. Where,

l F indicates the number of antenna channels for an RF module.

l TX indicates the number of transmit channels for an RF module.

l RX indicates the number of receive channels for an RF module.

l C indicates the number of CPRI links connecting RF modules with the GTMU board.

l TYPE indicates the CPRI network topologies applied to connect RF modules with the BBU.If the value of TYPE is A, the star topology is applied. If the value of TYPE is B, the chaintopology is applied.

NOTEThe configurations of RRU3008 V1 are the same as those of RRU3008 V2. This section takes the configurationsof RRU3008 V2 as examples.

Table 10-3 Basic configurations

BasicConfiguration

Number ofModules



RF111_1A 1 Single feeder[1TX 1RX]

Figure 10-1

RF112_2B 2 Single feeder[1TX 2RX]

Figure 10-2


Figure 10-3




Issue 06 (2011-03-30)

BasicConfiguration

Number ofModules




Figure 10-4


Figure 10-5

RF111_1AAn RRU3008 connects to the antenna system through ANT_TX/RXA. Antenna channel 1transmits and receives signals. The star topology is applied to connect the BBU with theRRU3008.

Figure 10-1 RF111_1A

RF112_2BTwo RRU3008 connect to the antenna system through ANT_TX/RXA. Each antenna channel1 transmits and receives signals. RX_IN/OUT on the two RRU3008 interconnect to transferdiversity signals. The chain topology is applied to connect the BBU with one RRU3008.



10-3

Figure 10-2 RF112_2B

RF211_1A

An RRU3008 connects to the antenna system through ANT_TX/RXA and ANT_TX/RXB.Antenna channel 1 transmits signals while antenna channel 2 receives signals. The star topologyis applied to connect the BBU with the RRU3008.





Issue 06 (2011-03-30)

RF212_1AAn RRU3008 connects to the antenna system through ANT_TX/RXA and ANT_TX/RXB.Antenna channel 1 transmits and receives signals while antenna channel 2 receives signals only.The star topology is applied to connect the BBU with the RRU3008.


RF222_1AAn RRU3008 connects to the antenna system through ANT_TX/RXA and ANT_TX/RXB. Eachantenna channel transmits and receives signals. The star topology is applied to connect the BBUwith the RRU3008.



10-5


Typical ConfigurationsTable 10-4 describes the typical configurations of RRU3008 in different scenarios.

Table 10-4 Typical configurations

Scenario Number ofModules


S3-S8 1 Independent transmit RF212_1A

Transmit diversity RF222_1A

S8-S12 2 Combined transmit RF112_2B

Independent transmit RF222_1A + RF222_1A




Issue 06 (2011-03-30)

11 Typical Scenarios of the DBS3900 (withthe DC RRU)

About This Chapter

This describes the typical installation scenarios of the DBS3900 configured with the BBU3900and DC RRU.

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

l BBC: Battery Cabinetl TMC: Transmission Cabinetl APM: Advance Power Module

11.1 BBU3900 Outdoors and RRU3004 OutdoorsThis describes the scenarios that the BBU3900 and RRU3004 of the DBS3900 are installedoutdoors.

11.2 BBU3900 Indoors and RRU3004 IndoorsThis describes the scenarios that the BBU3900 and RRU3004 of the DBS3900 are installedindoors.

11.3 BBU3900 Indoors and RRU3004 OutdoorsThis describes the scenarios that the BBU3900 and RRU3004 of the DBS3900 are installedindoors and outdoors respectively.




DBS3900 GSMTechnical Description 11 Typical Scenarios of the DBS3900 (with the DC RRU)


11-1


11.1.1 Scenario 1: -48 V DC Power InputWhen -48 V DC power is available on site, the installation scenarios of BBU+RRU+TMC orOMB+BBU+DCDU03B+RRU is applicable.

11.1.2 Scenario 2: 220 V AC Power InputWhen 220 V AC power is available on site and the required space for transmission units is notgreater than 4 U, the installation scenario of BBU+RRU+APM30+BBC is applicable. When thenumber of RRUs is not greater than two and the distance between the EPS4815 and RRUs isless than 5 m, the installation scenario of OMB+BBU+4815+RRU is applicable.


Installation scenario of BBU+RRU+TMCFigure 11-1 shows the installation scenario of BBU+RRU+TMC.

Figure 11-1 Installation scenario of BBU+RRU+TMC

RRU

TMC

TM space-7U

Heater-1U

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

BBU-2U

In this installation scenario,

l The TMC can be installed on the floor, pole, or wall.l The TMC provides a maximum of 7 U for installation purpose.l The BBU can be installed in the TMC, which is equipped with the DCDU-03B to provide

power for the BBU and RRU.

11 Typical Scenarios of the DBS3900 (with the DC RRU)DBS3900 GSM



Issue 06 (2011-03-30)

l The DCDU-03A configured in the TMC supplies power to transmission units.

l The heater in the TMC is optional.

l The RRU can be installed on a pole or tower.

l The requirement for the switch quantity and capacity of the external power input system is1 x 63 A.

Installation scenario of OMB+BBU+DCDU03B+RRU

If the site requires six DRRUs or less (cascaded mode in the cell) or three GRRUs or less, theinstallation scenario of OMB+BBU+DCDU03B+RRU can be used.

Figure 11-2 shows the installation scenario of OMB+BBU+DCDU03B+RRU.

Figure 11-2 Installation scenario of OMB+BBU+DCDU03B+RRU


l The OMB can be installed on a pole, or wall.

l The OMB provides 2 U space for the BBU and 1 U space for the DCDU03B.

l The DCDU03B provides the -48 V DC power for the BBU and RRUs.

l The RRU can be installed on a pole or tower. The maximum configuration of the RRUs isS4/4/4.

l The requirement for the switch quantity and capacity of the external power input system is6 x 20 A + 3×12 A. The maximum input current is 100 A.




11-3

NOTE

If the required space for transmission units is greater than 4 U, configure a TMC and ensure that the distancebetween the APM30 and the TMC is not longer than 1 m.

Scenario of Four-Hour Backup PowerIf the backup power required at the site is not greater than four hours, the installation scenario1 of BBU+RRU+APM30+BBC is applicable.

Figure 11-3 shows installation scenario 1 of BBU+RRU+APM30+BBC.

Figure 11-3 Installation scenario 1 of BBU+RRU+APM30+BBC

TM space-4U

Heater-1U

BBC

BAT.48V/92Ah

APM30

BAT.48V/92Ah

PDU-2U

BBU-2U

AC/DC-3U

RRU




Issue 06 (2011-03-30)


l The BBC is installed on the floor. By default, the APM30 is stacked on the BBC.l The heater in the APM30 is optional. The APM30 provides a maximum of 4 U space for

transmission units.l The BBU can be installed in the APM30, which supplies -48 V DC power to the BBU and

RRU.l The RRU can be installed on a pole or tower.l The heater in the BBC is optional. Without occupying additional internal space, the heater

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

are as follows:– 110 V AC dual-live-wire: 2 x (32 A to 50 A). The 32 A input is recommended.– 220 V AC single-phase: 1 x (32 A to 50 A). The 32 A input is recommended.– 220 V AC three-phase: 3 x (20 A to 30 A). The 20 A input is recommended.

Scenario of Eight-Hour Backup PowerIf eight-hour backup power is required at the site, installation scenario 2 of BBU+RRU+APM30+BBC is applicable.




11-5


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 BBCs can be installed on the floor. By default, the two BBCs arestacked.

l The APM30 provides a maximum of 4 U space for transmission units.l The BBU can be installed in the APM30, which supplies -48 V DC power to the BBU and







Issue 06 (2011-03-30)

Scenario of Half-Hour Backup Power

If half-hour backup power is required at the site, the installation scenario of BBU+RRU+APM30is applicable.

Figure 11-5 shows the installation scenario of BBU+RRU+APM30.

Figure 11-5 Installation scenario of BBU+RRU+APM30

APM30

TM space-2U

BAT

Heater-1U

PDU-2U

BBU-2U

AC/DC-3U

RRU


l The batteries providing 24 Ah backup power can be placed in the APM30. The batteriessupport a maximum cell configuration of S4/4/4.

l The APM30 provides a maximum of 2 U space for transmission units.

l The BBU can be installed in the APM30, which supplies -48 V DC power to the BBU andRRU.



11-7

l The RRU can be installed on a pole or tower.l The requirements for the switch quantity and capacity of the external power input system


Installation Scenario of OMB+BBU+4815+RRUIf the site requires two RRUs or less and the distance between the EPS4815 and RRUs is lessthan 5 m, the installation scenario of OMB+BBU+EPS4815+RRU can be used.

Figure 11-6 shows the installation scenario of OMB+BBU+EPS4815+RRU.

Figure 11-6 Installation scenario of OMB+BBU+4815+RRU


l The OMB can be installed on a pole, or wall.l The OMB provides 2 U space for the BBU and 1 U space for the 4815 power supply system.l The 4815 is an AC/DC conversion unit. It converts the 220 V AC power into the -48 V DC

power for the BBU and RRUs.l The RRU can be installed on a pole or tower. The maximum configuration of RRUs is S2/2

or O4.l The requirement for the switch quantity and capacity of the external power input system is

1 x 10 A (AC).





Issue 06 (2011-03-30)

11.2.1 Scenario 1: -48 V DC Power InputWhen -48 V DC power and the equipment room are available on site, the BBU and RRU canbe installed indoors.

11.2.2 Scenario 2: 220 V AC Power InputWhen 220 V AC power and the equipment room are available on site, the BBU and RRU canbe installed indoors.


Centralized Installation ScenariosFigure 11-7 and Figure 11-8 show the indoor centralized installation scenarios of the BBU andRRUs.

Figure 11-7 Indoor centralized installation scenarios of the BBU and RRUs (S2)



11-9


-48V INPUTL2

ANTJUMPER

S4

L1 L3

DCDU

BBU

RRU

RRU


l The BBU and DCDU-03B are installed in an RRU rack through the 2 U-high adaptingpieces.

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 is

1 x 10 A.l The RRUs, BBU, and DCDU-03B are equipotentially connected and then grounded

through one PGND cable.

Separate Installation ScenariosFigure 11-9 and Figure 11-10 show the indoor separate installation scenarios of the BBU andRRUs.




Issue 06 (2011-03-30)

Figure 11-9 Indoor separate installation scenarios of the BBU and RRUs (S2+S2)

-48V INPUTL2

ANTJUMPER

S2+S2

L1

BBU

RRU

RRU

L2

ANTJUMPER

DCDU



11-11


-48V INPUTL2

ANTJUMPER

S4+S4

L1

BBU

RRU

L2

ANTJUMPER

DCDU

RRU

RRU

RRU

L3

L3


l The BBU and DCDU-03B are installed in an RRU rack through the 2 U-high adaptingpieces.

l The RRU rack can be installed on the wall or stand.l In S2+S2 configuration, the requirement for the switch quantity and capacity of the external

power input system is 1 x 10 A. In S4+S4 configuration, the requirement is 1 x 20 A.l Two cascaded RRUs are equipotentially connected and then grounded through one PGND

cable.




Issue 06 (2011-03-30)


Centralized Installation ScenariosFigure 11-11 and Figure 11-12 show the indoor centralized installation scenarios of the BBUand RRUs.



11-13


AC INPUTL2

ANTJUMPER

S2

L1

4815

BBU

RRU

-48V OUTPUT




Issue 06 (2011-03-30)


AC INPUTL2

ANTJUMPER

S4

L1

4815

BBU

-48V OUTPUT

RRU

RRU


l The 4815 is an AC/DC conversion unit. It converts the 220 V AC power into the -48 V DCpower for the BBU and RRUs.

l The BBU and 4815 are installed in an RRU rack using two transfer pieces whose heightsare 2 U.


1 x 5A (AC).l The RRUs, BBU, and 4815 are equipotentially connected and then grounded through one

PGND cable.l When the 4815 is installed in the same rack as the BBU, the 4815 reports dry contact alarms

to the BBU.

Separate Installation ScenariosFigure 11-13 and Figure 11-14 show the indoor separate installation scenarios of the BBU andRRUs.



11-15


AC INPUTL2

ANTJUMPER

S2+S2

L1

BBU

4815

RRU

ANTJUMPER

4815

-48V OUTPUT

RRU

L2AC INPUTL1




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11-17


AC INPUTL2

ANTJUMPER

S4+S2

L1

BBU

4815

ANTJUMPER

4815

-48V OUTPUT

RRU

L2AC INPUTL1

RRU

RRU

L3




Issue 06 (2011-03-30)



l The BBU and 4815 are installed in an RRU rack using two transfer pieces whose heightsare 2 U.


2 x 5A.l The RRU and 4815 are equipotentially connected and then grounded through one PGND

cable.l When the 4815 is installed in the same rack as the BBU, the 4815 reports dry contact alarms

to the BBU.l When the 4815 is installed in the same rack as the RRU, the RRU does not support detection

and monitoring functions. Therefore, monitoring is not performed in this scenario.


11.3.1 Scenario 1: -48 V DC Power InputWhen -48 V DC power is available on site, the installation scenario of BBU+RRU+DCDU-03Bis applicable.

11.3.2 Scenario 2: 220 V AC Power InputWhen 220 V AC power is available on site, the installation scenario of BBU+RRU+PS4890+DCDU-03B is applicable.


Figure 11-15 shows the installation scenario of BBU+RRU+DCDU-03B.



11-19

Figure 11-15 Installation scenario of BBU+RRU+DCDU-03B


l The BBU and DCDU-03B are installed in an indoor 19-inch rack.l The RRU can be installed outdoors on a pole.l The requirement for the switch quantity and capacity of the external power input system is

1 x (63 A to 100 A). The 63 A input is recommended.


Figure 11-16 shows the installation scenario of BBU+RRU+PS4890+DCDU-03B.

Figure 11-16 Installation scenario of BBU+RRU+PS4890+DCDU-03B




Issue 06 (2011-03-30)


l The BBU and DCDU-03B are installed in an indoor PS4890.l The RRU can be installed outdoors on a pole.l The requirements for the switch quantity and capacity of the external power input system



11.4.1 Scenario 1: -48 V DC Power InputWhen -48 V DC power is available on site, the installation scenarios of BBU+RRU+TMC orOMB+BBU+DCDU03B+RRU is applicable.11.4.2 Scenario 2: 220 V AC Power InputWhen 220 V AC power is available on site and the required space for transmission units is notgreater than 4 U, the installation scenario of BBU+RRU+APM30+BBC is applicable. When thenumber of RRUs is not greater than two and the distance between the EPS4815 and RRUs isless than 5 m, the installation scenario of OMB+BBU+4815+RRU is applicable.


Installation scenario of BBU+RRU+TMCFigure 11-17 shows the installation scenario of BBU+RRU+TMC.

Figure 11-17 Installation scenario of BBU+RRU+TMC

RRU

TMC

TM space-7U

Heater-1U

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

BBU-2U



11-21


l The TMC can be installed on the floor, pole, or wall.l The TMC provides a maximum of 7 U for installation purpose.l The BBU can be installed in the TMC, which is equipped with the DCDU-03B to provide

power for the BBU and RRU.l The DCDU-03A configured in the TMC supplies power to transmission units.l The heater in the TMC is optional.l The RRU can be installed on a pole or tower.l The requirement for the switch quantity and capacity of the external power input system is

1 x 63 A.

Installation scenario of OMB+BBU+DCDU03B+RRUIf the site requires six DRRUs or less (cascaded mode in the cell) or three GRRUs or less, theinstallation scenario of OMB+BBU+DCDU03B+RRU can be used.

Figure 11-18 shows the installation scenario of OMB+BBU+DCDU03B+RRU.

Figure 11-18 Installation scenario of OMB+BBU+DCDU03B+RRU


l The OMB can be installed on a pole, or wall.l The OMB provides 2 U space for the BBU and 1 U space for the DCDU03B.l The DCDU03B provides the -48 V DC power for the BBU and RRUs.l The RRU can be installed on a pole or tower. The maximum configuration of the RRUs is

S4/4/4.l The requirement for the switch quantity and capacity of the external power input system is

6 x 20 A + 3×12 A. The maximum input current is 100 A.




Issue 06 (2011-03-30)


NOTE

If the required space for transmission units is greater than 4 U, configure a TMC and ensure that the distancebetween the APM30 and the TMC is not longer than 1 m.

Scenario of Four-Hour Backup PowerIf the backup power required at the site is not greater than four hours, the installation scenario1 of BBU+RRU+APM30+BBC is applicable.




11-23


TM space-4U

Heater-1U

BBC

BAT.48V/92Ah

APM30

BAT.48V/92Ah

PDU-2U

BBU-2U

AC/DC-3U

RRU


l The BBC is installed on the floor. By default, the APM30 is stacked on the BBC.

l The heater in the APM30 is optional. The APM30 provides a maximum of 4 U space fortransmission units.

l The BBU can be installed in the APM30, which supplies -48 V DC power to the BBU andRRU.

l The RRU can be installed on a pole or tower.




Issue 06 (2011-03-30)

l The heater in the BBC is optional. Without occupying additional internal space, the heatercan be placed under the baffle plate at the bottom of each battery layer.

l The requirements for the switch quantity and capacity of the external power input systemare as follows:– 110 V AC dual-live-wire: 2 x (32 A to 50 A). The 32 A input is recommended.– 220 V AC single-phase: 1 x (32 A to 50 A). The 32 A input is recommended.– 220 V AC three-phase: 3 x (20 A to 30 A). The 20 A input is recommended.

Scenario of Eight-Hour Backup PowerIf eight-hour backup power is required at the site, installation scenario 2 of BBU+RRU+APM30+BBC is applicable.



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




11-25

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





Scenario of Half-Hour Backup PowerIf half-hour backup power is required at the site, the installation scenario of BBU+RRU+APM30is applicable.

Figure 11-21 shows the installation scenario of BBU+RRU+APM30.




Issue 06 (2011-03-30)

Figure 11-21 Installation scenario of BBU+RRU+APM30

APM30

TM space-2U

BAT

Heater-1U

PDU-2U

BBU-2U

AC/DC-3U

RRU


l The batteries providing 24 Ah backup power can be placed in the APM30. The batteriessupport a maximum cell configuration of S4/4/4.


RRU.l The RRU can be installed on a pole or tower.l The requirements for the switch quantity and capacity of the external power input system




11-27

Installation Scenario of OMB+BBU+4815+RRU

If the site requires two RRUs or less and the distance between the EPS4815 and RRUs is lessthan 5 m, the installation scenario of OMB+BBU+EPS4815+RRU can be used.

Figure 11-22 shows the installation scenario of OMB+BBU+EPS4815+RRU.

Figure 11-22 Installation scenario of OMB+BBU+4815+RRU


l The OMB can be installed on a pole, or wall.l The OMB provides 2 U space for the BBU and 1 U space for the 4815 power supply system.l The 4815 is an AC/DC conversion unit. It converts the 220 V AC power into the -48 V DC

power for the BBU and RRUs.l The RRU can be installed on a pole or tower. The maximum configuration of RRUs is S2/2

or O4.l The requirement for the switch quantity and capacity of the external power input system is

1 x 10 A (AC).







Issue 06 (2011-03-30)


Figure 11-23 shows the indoor centralized installation scenario of the BBU and RRU.

Figure 11-23 Indoor centralized installation scenario of the BBU and RRU

BBU

-48V INPUT

L2

ANT

RRU

JUMPER

S1~S8

L1-48V INPUT


l The BBU is installed in an RRU rack using a transfer piece whose height is 2 u. The RRUrack can be installed on the wall or stand.

l The RRU can be installed on the wall or stand.l For the BBU, the requirement for the switch quantity and capacity of the external power

input system is 1 x (5 A to 10 A). For the RRU, the requirement is 1 x (10 A to 20 A).


Figure 11-24 shows the indoor centralized installation scenario of the BBU and RRU.



11-29

Figure 11-24 Indoor centralized installation scenario of the BBU and RRU

AC INPUTL2

ANTJUMPER

S1~S8

L1

4815

BBU

RRU

-48V OUTPUT



l The BBU and 4815 are installed in an RRU rack using two transfer pieces whose heightsare 2 U. The RRU rack can be installed on the wall or stand.

l The RRU can be installed on the wall or stand.l The requirement for the switch quantity and capacity of the external power input system is

1 x 10 A (AC).







Issue 06 (2011-03-30)


Figure 11-25 shows the installation scenario of BBU+RRU+DCDU-03B.

Figure 11-25 Installation scenario of BBU+RRU+DCDU-03B


l The BBU and DCDU-03B are installed in an indoor 19-inch rack.l The RRU can be installed outdoors on a pole.l The requirement for the switch quantity and capacity of the external power input system is

1 x (63 A to 100 A). The 63 A input is recommended.


Figure 11-26 shows the installation scenario of BBU+RRU+PS4890+DCDU-03B.



11-31

Figure 11-26 Installation scenario of BBU+RRU+PS4890+DCDU-03B


l The BBU and DCDU-03B are installed in an indoor PS4890.l The RRU can be installed outdoors on a pole.l The requirements for the switch quantity and capacity of the external power input system





Issue 06 (2011-03-30)

12 Typical Scenarios of the DBS3900 (withthe AC RRU)

About This Chapter

This describes the typical scenarios of the DBS3900 configured with the BBU3900 and ACRRU.

12.1 BBU3900 Indoors and RRU IndoorsThis describes the scenarios of the BBU3900 and RRU installed indoors. The scenarios arecategorized into two types: sites with DC power supply and sites without DC power supply. Insuch scenarios, the RRU is remotely installed. The RRU3004 has the same power supply modeand installation mode as the RRU3008.

12.2 BBU3900 Indoors and RRU OutdoorsThis describes the scenarios of the BBU3900 installed indoors and RRU outdoors. The scenariosare categorized into two types: sites with DC power supply and sites without DC power supply.In such scenarios, the RRU is remotely installed. The RRU3004 has the same power supplymode and installation mode as the RRU3008.

DBS3900 GSMTechnical Description 12 Typical Scenarios of the DBS3900 (with the AC RRU)


12-1

12.1 BBU3900 Indoors and RRU IndoorsThis describes the scenarios of the BBU3900 and RRU installed indoors. The scenarios arecategorized into two types: sites with DC power supply and sites without DC power supply. Insuch scenarios, the RRU is remotely installed. The RRU3004 has the same power supply modeand installation mode as the RRU3008.

The requirements for the upper-level MCB of the BBU3900 and RRU are as follows:

l The requirements for the DC upper-level MCB of the BBU3900 is 5 A to 10 A.l The requirements for the AC upper-level MCB of the RRU is 5 A to 10 A.

Sites with DC Power Supply

If a site supplies DC power, the installation scenario of the BBU3900 and RRU is shown inFigure 12-1.

Figure 12-1 Installation scenario of the BBU3900 and RRU (1)

RRU

AC

DC

BBU3900-2U

(indoor)

19-inch rack

In this scenario,

l The DC power is supplied to the BBU3900 directly by the site.l The BBU3900 can be installed in a 19-inch rack or in the spare space of the customer

equipment.l The RRU is directly supplied with AC power.l The RRU can be installed on the wall.

12 Typical Scenarios of the DBS3900 (with the AC RRU)DBS3900 GSM



Issue 06 (2011-03-30)

Sites Without DC Power SupplyIf a site does not supply DC power and the BBU3900 has no requirements for power backup,the installation scenarios of the BBU3900 and RRU are shown in Figure 12-2.


RRU

AC

AC

4815

BBU3900-2U

(indoor)

19-inch rack

In this scenario,

l The 4815 serves as an AC/DC conversion unit. It converts AC power into DC power forthe BBU3900.

l The BBU3900 and 4815 can be installed in the spare space of the customer equipment orin a 19-inch rack.

l The RRU is directly supplied with AC power.l The RRU can be installed on the wall.

If a site does not supply DC power and the BBU3900 has requirements for power backup, theinstallation scenarios of the BBU3900 and RRU are shown in Figure 12-3.



12-3


(indoor)

RRU

AC

AC

BBU3900-2U

EPS4890-3U

Battery

DCDU-03-1UDCDU-04-1U

PS4890

In this scenario,

l The PS4890 is used to convert AC power into DC power. It supplies power and providesinstallation space for the BBU3900.

l If configured with the 50 Ah batteries, the PS4890 can provide power backup for a minimumof 24 hours for the BBU3900.

l The BBU3900 is installed in the PS4890.

l The RRU is directly supplied with AC power.

l The RRU can be installed on the wall.

12.2 BBU3900 Indoors and RRU OutdoorsThis describes the scenarios of the BBU3900 installed indoors and RRU outdoors. The scenariosare categorized into two types: sites with DC power supply and sites without DC power supply.In such scenarios, the RRU is remotely installed. The RRU3004 has the same power supplymode and installation mode as the RRU3008.

The requirements for the upper-level MCB of the BBU3900 and RRU are as follows:

l The requirements for the DC upper-level MCB of the BBU3900 is 5 A to 10 A.

l The requirements for the AC upper-level MCB of the RRU is 5 A to 10 A.

Sites with DC Power Supply

If a site supplies DC power, the installation scenario of the BBU3900 and RRU is shown inFigure 12-4.




Issue 06 (2011-03-30)


RRU

ACDC

BBU3900-2U

(indoor) (outdoor)

19-inch rack

In this scenario,

l The DC power is directly supplied to the BBU3900 by the site.l The BBU3900 can be installed in a 19-inch rack or in the spare space of the customer

equipment.l The RRU is directly supplied with AC power.l The RRU can be installed on the pole or wall.

Sites Without DC Power SupplyIf a site does not supply DC power and the BBU3900 has no requirements for power backup,the installation scenarios of the BBU3900 and RRU are shown in Figure 12-5.



12-5


RRU

ACAC

BBU3900-2U

4815

(indoor) (outdoor)

19-inch rack

In this scenario,

l The 4815 serves as an AC/DC conversion unit. It converts AC power into DC power forthe BBU3900.

l The BBU3900 and 4815 can be installed in the spare space of the customer equipment orin a 19-inch rack.

l The RRU is directly supplied with AC power.l The RRU can be installed on the pole or wall.

If a site does not supply DC power and the BBU3900 has requirements for power backup, theinstallation scenarios of the BBU3900 and RRU are shown in Figure 12-6.




Issue 06 (2011-03-30)


RRU

ACAC

BBU3900-2U

EPS4890-3U

Battery

DCDU-03-1UDCDU-04-1U

(indoor) (outdoor)

PS4890

In this scenario,

l The PS4890 is used to convert AC power into DC power. It supplies power and providesinstallation space for the BBU3900.

l If configured with the 50 Ah batteries, the PS4890 can provide power backup for a minimumof 24 hours for the BBU3900.

l The BBU3900 is installed in the PS4890.l The RRU is directly supplied with AC power.l The RRU can be installed on the pole or wall.



12-7

Documents

DBS3900 GSM Technical Description(V100R012_06)(PDF)-En