BBU Hardware Description(V100R009C00_01)(PDF)-En

BBU3900

V100R009C00

Hardware Description

Issue 01

Date 2014-04-30

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2014. 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 a 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 01 (2014-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.

i

http://www.huawei.com

mailto:[email protected]

About This Document

OverviewThe BBU is a baseband processing unit and can be used in various 3900 series base stations.This document describes configurations, functions, application scenarios, and specifications ofboards in the BBU to help users comprehensively understand functions of the BBU.

The exteriors of components or cables in this document are for reference only. The actualexteriors may be different.

NOTE

Unless otherwise specified, the BBU refers to both the BBU3900 and BBU3910 in this document.

Unless otherwise specified, LTE refers to either LTE FDD or LTE TDD, and eNodeB refers to either anLTE FDD eNodeB or an LTE TDD eNodeB in this document. The "L" and "T" in RAT acronyms refer toLTE FDD and LTE TDD, respectively.

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

Product Name Product Version

BTS3900 V100R009C00. The mapping single-modebase station versions are:

GBTS: V100R016C00 and V300R016C00

eGBTS: V100R016C00

NodeB: V200R016C00

eNodeB: V100R007C00

BTS3900A

BTS3900L

BTS3900AL

DBS3900

BTS3900C V100R009C00. The mapping single-modebase station version is:NodeB: V200R016C00

Intended AudienceThis document is intended for:

BBU3900Hardware Description About This Document


ii

l Base station installation personnel

l System personnel

l Site maintenance personnel

Organization1 Changes in BBU Hardware Description

This chapter describes the changes in BBU Hardware Description.

2 Exterior of a BBU

The BBU, which has a case structure, is 19 inches wide and 2 U high.

3 Working Principle and Functions of the BBU

The BBU is a baseband processing unit. It processes the baseband signals of the base station.

4 BBU Slot Assignment

This chapter describes BBU slot assignment, BBU3900 slot assignment, and BBU3910 slotassignment.

5 Boards in a BBU

A BBU includes the following boards: the main processing board, baseband processing board,transmission extension board, fan module, power module, monitoring module, clock board witha satellite card, baseband extension board, and infrastructure interconnection board.

6 BBU Engineering Specifications

This section describes the engineering specifications of the BBU, including the powerspecifications, size, weight, heat dissipation capability, environmental specifications, and surgeprotection specifications.

ConventionsSymbol Conventions

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

Symbol Description

Indicates an imminently hazardous situation which, if notavoided, will result in death or serious injury.

Indicates a potentially hazardous situation which, if notavoided, could result in death or serious injury.

Indicates a potentially hazardous situation which, if notavoided, may result in minor or moderate injury.



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Symbol Description

Indicates a potentially hazardous situation which, if notavoided, could result in equipment damage, data loss,performance deterioration, or unanticipated results.NOTICE is used to address practices not related to personalinjury.

Calls attention to important information, best practices andtips.NOTE is used to address information not related to personalinjury, equipment damage, and environment deterioration.

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.



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

GUI Conventions

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


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

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

Keyboard Operations

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

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.



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Contents

About This Document.....................................................................................................................ii

1 Changes in BBU Hardware Description...................................................................................1

2 Exterior of a BBU...........................................................................................................................4

3 Working Principle and Functions of the BBU.........................................................................6

4 BBU Slot Assignment...................................................................................................................84.1 BBU Slot Distribution....................................................................................................................................................94.2 BBU3900 Slot Assignment............................................................................................................................................94.2.1 BBU Slot Assignment in a GSM Base Station............................................................................................................94.2.2 BBU Slot Assignment in a UMTS Base Station.......................................................................................................134.2.3 BBU Slot Assignment in an LTE FDD/LTE TDD Base Station..............................................................................154.2.4 BBU Slot Assignment in a GU or G*U Base Station................................................................................................174.2.5 BBU Slot Assignment in a GL or G*L Base Station................................................................................................224.2.6 BBU Slot Assignment in a UL, U*L, or U*T Base Station......................................................................................274.2.7 BBU Slot Assignment in a Triple-Mode Base Station..............................................................................................324.2.8 BBU Slot Assignment in a Quadruple-Mode Base Station.......................................................................................464.3 BBU3910 Slot Assignment..........................................................................................................................................504.3.1 BBU Slot Assignment in GSM Base Stations...........................................................................................................504.3.2 BBU Slot Assignment in a UMTS Base Station.......................................................................................................534.3.3 BBU Slot Assignment in an LTE FDD/LTE TDD Base Station..............................................................................544.3.4 BBU Slot Assignment in GU and G*U Base Stations..............................................................................................554.3.5 BBU Slot Assignment in GL or G*L Base Stations..................................................................................................614.3.6 BBU Slot Assignment in a UL or U*L Base Station................................................................................................664.3.7 BBU Slot Assignment in a Triple-Mode Base Station..............................................................................................714.3.8 BBU Slot Assignment in a Quadruple-Mode Base Station.......................................................................................81

5 Boards in a BBU...........................................................................................................................855.1 UMPT...........................................................................................................................................................................875.2 WMPT..........................................................................................................................................................................995.3 GTMU........................................................................................................................................................................1065.4 LMPT..........................................................................................................................................................................1155.5 UBBP..........................................................................................................................................................................120

BBU3900Hardware Description Contents


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5.6 WBBP.........................................................................................................................................................................1325.7 LBBP..........................................................................................................................................................................1395.8 FAN............................................................................................................................................................................1525.9 UPEU..........................................................................................................................................................................1555.10 UEIU.........................................................................................................................................................................1595.11 UTRP........................................................................................................................................................................1605.12 USCU........................................................................................................................................................................1705.13 UBRI.........................................................................................................................................................................1745.14 UCIU........................................................................................................................................................................1785.15 Optical Modules.......................................................................................................................................................181

6 BBU Engineering Specifications............................................................................................183

BBU3900Hardware Description Contents


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1 Changes in BBU Hardware Description

This chapter describes the changes in BBU Hardware Description.

01 (2014-04-30)This is the first commercial release.

Compared with Draft B (2014-04-10), this issue does not include any new information or excludeany information.

Compared with Draft B (2014-04-10), this issue includes the following changes:

Topic Change Description

4.3.1 BBU Slot Assignment in GSM BaseStations

Added the configuration principles of theGTMUb.

4.3.4 BBU Slot Assignment in GU and G*UBase Stations

4.3.5 BBU Slot Assignment in GL or G*LBase Stations

5.5 UBBP Changed the specifications of the UBBPboards.

Draft B (2014-04-10)This is a draft.

Compared with Draft A (2014-01-20), this issue does not include any new information or excludeany information.

Compared with Draft A (2014-01-20), this issue includes the following changes:

BBU3900Hardware Description 1 Changes in BBU Hardware Description


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5.5 UBBP Modify the number of cells supported by aUBBPd9 working in LTE TDD mode.

Draft A (2014-01-20)

This is a draft.

Compared with issues for the multimode base station version V100R008C00 and the single-mode base station versions WCDMA-NodeB V200R015C00, GSM-BTS V100R015C00, andeNodeB V100R006C00, this issue includes the following new information:

l 4.3 BBU3910 Slot Assignment

l 4.3.1 BBU Slot Assignment in GSM Base Stations

l 4.3.2 BBU Slot Assignment in a UMTS Base Station

l 4.3.3 BBU Slot Assignment in an LTE FDD/LTE TDD Base Station

l 4.3.4 BBU Slot Assignment in GU and G*U Base Stations

l 4.3.5 BBU Slot Assignment in GL or G*L Base Stations

l 4.3.6 BBU Slot Assignment in a UL or U*L Base Station

l 4.3.7 BBU Slot Assignment in a Triple-Mode Base Station

l 5.5 UBBP

Compared with issues for the multimode base station version V100R008C00 and the single-mode base station versions WCDMA-NodeB V200R015C00, GSM-BTS V100R015C00, andeNodeB V100R006C00, this issue includes the following changes:


4.2.1 BBU Slot Assignment in a GSM BaseStation

Added the configuration principle of theUBBP board.

4.2.2 BBU Slot Assignment in a UMTSBase Station

4.2.3 BBU Slot Assignment in an LTEFDD/LTE TDD Base Station

4.2.4 BBU Slot Assignment in a GU or G*UBase Station

4.2.5 BBU Slot Assignment in a GL or G*LBase Station

4.2.6 BBU Slot Assignment in a UL, U*L,or U*T Base Station

4.2.7 BBU Slot Assignment in a Triple-Mode Base Station



2


4.2.8 BBU Slot Assignment in aQuadruple-Mode Base Station

Compared with issues for the multimode base station version V100R008C00 and the single-mode base station versions WCDMA-NodeB V200R015C00, GSM-BTS V100R015C00, andeNodeB V100R006C00, this issue does not exclude any information.



3

2 Exterior of a BBU

The BBU, which has a case structure, is 19 inches wide and 2 U high.

The following figure shows the exterior of a BBU.

Figure 2-1 Exterior of a BBU

The BBU is labeled with an equipment serial number (ESN), whose position is shown as follows:l If there is a label on the FAN unit of the BBU, the ESN is printed on the label and a mounting

ear of the BBU, as shown in the following figure.

Figure 2-2 ESN position 1

BBU3900Hardware Description 2 Exterior of a BBU


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l If there is no label on the FAN unit of the BBU, the ESN is printed on a mounting ear of

the BBU, as shown in the following figure.

Figure 2-3 ESN position 2

NOTE

The ESN is a unique identifier of a device and is used during base station commissioning.

BBU3900Hardware Description 2 Exterior of a BBU


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3 Working Principle and Functions of the BBU

The BBU is a baseband processing unit. It processes the baseband signals of the base station.

Working PrincipleBBU consists of the following subsystems: baseband subsystem, power and mechanicalsubsystem, transmission subsystem, interconnection subsystem, main control subsystem,monitoring subsystem, and clock subsystem. These subsystem consist of different modules.l The baseband subsystem consists of the baseband processing unit.l The cabinet subsystem consists of the backplane, fan, and power modules.l The transmission subsystem consists of the main control transmission unit and transmission

extension unit.

l The interconnection subsystem consists of the main control transmission unit(a) andinfrastructure interconnection unit.

l The main control subsystem consists of the main control transmission unit.l The monitoring subsystem consists of the power module and monitoring unit.l The clock subsystem consists of the main control transmission unit and satellite card and

clock unit.

NOTE

(a) In the interconnection subsystem, the UMPT is used as a main control transmission unit.

The following figure shows the working principle of a BBU.

BBU3900Hardware Description 3 Working Principle and Functions of the BBU


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Figure 3-1 Working principle of a BBU

FunctionThe BBU performs the following functions:

l Provides ports to connect to the transmission equipment, RF modules, USB devices(a),external reference clock, and LMT or U2000 to provide signal transmission, performautomatic software upgrade, receive reference clock, and support BBU maintenance on theLMT or U2000.

l Manages the entire base station system, including the processing of uplink and downlinkdata, signaling processing, resource management, and operation and maintenance.

NOTE

a: The security of the USB port is ensured by encryption, and the USB port can be shut down usingcommands. The USB commission port is used for commissioning the base station rather than configuringand exporting information of the base station.

BBU3900Hardware Description 3 Working Principle and Functions of the BBU


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4 BBU Slot Assignment

About This Chapter

This chapter describes BBU slot assignment, BBU3900 slot assignment, and BBU3910 slotassignment.

4.1 BBU Slot DistributionThis section describes the BBU slot distribution.

4.2 BBU3900 Slot AssignmentThis section describes the principles for BBU3900 slot assignment.


BBU3900Hardware Description 4 BBU Slot Assignment


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4.1 BBU Slot DistributionThis section describes the BBU slot distribution.

A BBU has 11 slots. The following figure shows the BBU slot distribution.

Figure 4-1 BBU slot distribution

In all scenarios, the FAN, UPEU, and UEIU are configured in fixed slots in a BBU. The followingtable describes the principles for configuring the FAN, UPEU, and UEIU.

Table 4-1 Principles for configuring the FAN, UPEU, and UEIU

Board Type BoardName

Mandatoryor Not

MaximumQuantity

Slot AssignmentSequence (the LeftmostSlot Has the HighestPriority)

Fan unit FAN Yes 1 Slot 16 -

Power andenvironmentinterface unit

UPEU Yes 2 Slot 19 Slot 18

Environmentmonitoringunit

UEIU No 1 Slot 18 -


4.2.1 BBU Slot Assignment in a GSM Base StationThis section describes the principles for BBU3900 slot assignment in a GSM base station.

BBU Slot Assignment in a GBTS

The following figure shows the BBU slot assignment in a GBTS.



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Figure 4-2 BBU slot assignment

The following table describes the principles for BBU slot assignment.

Table 4-2 Principles for BBU slot assignment

Priority

BoardType

Board Mandatory

MaximumQuantity

Slot Assignment Sequence (theLeftmost Slot Has the Highest Priority)

1 Maincontrol board

GTMU

Yes 1 Slots 5and 6

- - - -

GTMUb

2 Interconnectionboard

UCIU No 1 Slot 4 Slot 0 Slot 1 - -

3 Transmissionboard

UTRPc

No 2 Slot 4 Slot 0 Slot 1 - -

UTRPb4

4 Satellite-cardboard

USCUb22

No 1 Slot 1 - - - -

USCUb14

No 1 Slot 4 Slot1 Slot 0 - -

5 Basebandradiointerfaceboard

UBRIb

No 1 Slot 2 - - - -

UBRI



10

Priority

BoardType

Board Mandatory

MaximumQuantity


6 Basebandprocessingboard

UBBPd

No 2 Slot1 Slot2 Slot0 Slot4 Slot3

NOTE

l If two or more baseband boards in GSM mode are required, ensure that at least one of the basebandboard (UBBPd_G, UBRI, or UBRIb) is installed in slot 1, slot 2, or slot 3.

l The UBBP_G installed in slot 4 can not be connected CPRI cables in a GBTS.

The following figure shows the typical configuration of BBU boards.

Figure 4-3 Typical configuration of BBU boards

BBU Slot Assignment in an eGBTSThe following figure shows the BBU slot assignment in an eGBTS.





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Priority

BoardType

Board

Mandatory

MaximumQuantity

Slot Assignment Sequence (the LeftmostSlot Has the Highest Priority)

1 Maincontrolboard

UMPTb

Yes 1 Slot 7 - - - - -


USCUb22

No 1 Slot5 Slot1 - - - -

USCUb14

No 1 Slot5 Slot4 Slot1 Slot0 - -


UBRIb

No 2 Slot 1 Slot 0 - - - -

UBRI


UBBPd

No 2 Slot1 Slot0 Slot4 Slot5 Slot2 Slot3

NOTE


l The UBBP_G installed in slot 4 or 5 can not be connected CPRI cables in a eGBTS.





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4.2.2 BBU Slot Assignment in a UMTS Base StationThis section describes the principles for BBU slot assignment in a UMTS base station.

The following figures show the BBU slot assignment in a UMTS base station.

Figure 4-6 BBU slot assignment in a UMTS base station

The following table describes the principles for BBU slot assignment in a UMTS base station.


Priority

BoardType

BoardName

Mandatory orNot

MaximumQuantity


1 Maincontrolboard

UMPTb

Yes 2 Slot 7 Slot 6 - - - -

UMPTa1

WMPT

2 Transmissionboard

UTRPc

No 2 Slot 4 Slot 5 Slot 0 Slot 1 - -

UTRP6

UTRP9

UTRP2

UTRPa



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Priority

BoardType

BoardName

Mandatory orNot

MaximumQuantity


UTRP3

UTRP4


USCUb22

No 1 Slot 5 Slot 1 - - - -

USCUb14


4 BasebandprocessingboardnotprovidingadditionalCPRIports

WBBPf

Yes 6 Slot 3 Slot 0 Slot 1 Slot 2 Slot 4 Slot 5

WBBPd

WBBPb

WBBPa

UBBPd_U

BasebandprocessingboardprovidingadditionalCPRIports

WBBPf


WBBPd

WBBPb

WBBPa

UBBPd_U



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NOTE

l In a UMTS single-mode base station, the UMPT and WMPT cannot be configured in the same BBU.

l The baseband processing board in UMTS mode configured in only slot 3 or 2 can be connected CPRIcables. The UBBPd_U, WBBPd, or WBBPf is preferentially configured in slot 3 or 2. The priority ofthe three kinds of boards is UBBPd_U > WBBPf > WBBPd.

l If five or more baseband processing boards working in UMTS mode are required, ensure that WBBPor UBBPd_U boards are installed in both slots 2 and 3. At least one of the boards in slots 2 and 3 isUBBPd_U, WBBPd, or WBBPf.

l If both slots 2 and 3 are occupied by the WBBPa or WBBPb boards, exchange boards to ensure thatthe UBBPd_U, WBBPd, or WBBPf is configured in slot 3 or 2. The UBBPd_U, WBBPd, or WBBPfis preferentially configured in slot 3.



4.2.3 BBU Slot Assignment in an LTE FDD/LTE TDD Base StationThis section describes the principles for BBU3900 slot assignment in an LTE FDD or LTE TDDsingle-mode base station.

The principles for BBU slot assignment in an LTE TDD base station are the same as those in anLTE FDD base station. The following figure shows the principles for BBU slot assignment inan LTE FDD base station.





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Priority

BoardType

Board

Mandatory

MaximumQuantity


1 MaincontrolboardinLTEFDDmode

UMPTb


UMPTa2andUMPTa6

LMPT


USCUb22

No 1 Slot 5 Slot 1 - - - -

USCUb14


USCUb11

3 BasebandprocessingboardinLTEFDDmode

LBBPd

Yes 6 Slot 3 Slot 0 Slot1 Slot 2 Slot 4 Slot 5

LBBPc

UBBPd

NOTE

In an LTE FDD or LTE TDD base station, the UMPT and LMPT boards cannot be configured in the sameBBU.





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4.2.4 BBU Slot Assignment in a GU or G*U Base StationThis section describes the principles for BBU3900 slot assignment in a GU or G*U base station.

BBU Slot Assignment in a GU Base StationNOTE

l The GU base station is a separate-MPT GSM/UMTS dual-mode base station. In a GU base station, asingle BBU is configured with two main control boards, in which one works in GSM mode and theother works in UMTS mode.

l The G*U base station is a co-MPT GSM/UMTS dual-mode base station. In a G*U base station, onemain control board in a single BBU can work in GSM and UMTS dual-mode.

The following figure shows the BBU slot assignment in a GU base station.




Priority

BoardType

Board Mandatory

MaximumQuantity


1 Maincontrol boardinGSMmode

GTMUb

Yes 1 Slot 6 - - - -

GTMU

2 Maincontrol boardin

UMPTb

Yes 1 Slot 7 - - - -

UMPTa1



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Priority

BoardType

Board Mandatory

MaximumQuantity


UMTSmode

WMPT

3 TransmissionboardinGSMmode

UTRPb4


4 TransmissionboardinUMTSmode

UTRPc


UTRP6

UTRP9

UTRP2

UTRPa

UTRP3

UTRP4


USCUb22

No 1 Slot 1 - - - -

USCUb14


6 BasebandradiointerfaceboardinGSMmode

UBRIb

No 1 Slot 2 - - - -

UBRI



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Priority

BoardType

Board Mandatory

MaximumQuantity


7 BasebandprocessingboardinGSMmode

UBBPd_G

No 2 Slot 1 Slot 2 Slot 0 Slot 4 -

8 UMTSbasebandprocessingboardnotconnectingtoCPRIcables

WBBPf

Yes 5 Slot 3 Slot 0 Slot 1 Slot 2 Slot 4

WBBPd

WBBPb

WBBPa

UBBPd_U

UMTSbasebandprocessingboardconnectingtoCPRIcables

WBBPf


WBBPd

WBBPb

WBBPa

UBBPd_U



19

NOTE








BBU Slot Assignment in a G*U Base Station

The following figure shows the BBU slot assignment in a G*U base station.





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Priority

BoardType

Board

Mandatory

MaximumQuantity


1 MaincontrolboardinG*Umode

UMPTb


UMPTa1

2 Transmissionboard

UTRPc



USCUb22

No 1 Slot 5 Slot 1 - - - -

USCUb14


4 Basebandprocessingboardinmultimode

UBBP

No 2 Slot 3 Slot 2 - - - -

5 BasebandradiointerfaceboardinmultimodeorGSMmode

UBRIb

No 2 Slot 1 Slot 0 - - - -



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Priority

BoardType

Board

Mandatory

MaximumQuantity



UBBP_G

No 2 Slot 1 Slot 2 Slot 0 Slot 4 Slot 5 -

7 BasebandprocessingboardinUMTSmode

WBBPf


WBBPd

WBBPb

WBBPa

UBBPd_U



4.2.5 BBU Slot Assignment in a GL or G*L Base StationThis section describes the principles for BBU3900 slot assignment in a GL or G*L base station.



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BBU Slot Assignment in a GL Base StationNOTE

l The GL base station is a separate-MPT GSM/LTE dual-mode base station. In a GL base station, a singleBBU is configured with two main control boards, in which one works in GSM mode and the otherworks in LTE mode.

l The G*L base station is a co-MPT GSM/LTE dual-mode base station. In a G*L base station, one maincontrol board in a single BBU can work in GSM and LTE dual-mode.

The following figure shows the BBU slot assignment.




Priority

BoardType

Board Mandatory

MaximumQuantity


1 Maincontrol boardinGSMmode

GTMUb

Yes 1 Slot 6 - - - -

GTMU

2 Maincontrol boardinLTEFDDmode

UMPTb

Yes 1 Slot 7 - - - -

UMPTa2andUMPTa6

LMPT



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Priority

BoardType

Board Mandatory

MaximumQuantity



UTRPb4



USCUb22

No 1 Slot 1 - - - -

USCUb14

No 1 Slot 4 Slot1 Slot 0 - -

USCUb11


UBRIb

No 1 Slot 2 - - - -

UBRI


UBBPd_G



LBBPd


LBBPc

UBBPd_L



24

NOTE





BBU Slot Assignment in a G*L Base Station





Priority

BoardType

Board

Mandatory

MaximumQuantity


1 Maincontrolboard

UMPTb




25

Priority

BoardType

Board

Mandatory

MaximumQuantity


inG*Lmode

UMPTa2andUMPTa6

2 Transmissionboard

UTRPc



USCUb22

No 1 Slot 5 Slot 1 - - - -

USCUb14


USCUb11


UBBPd

No 2 Slot 3 Slot 2 - - - -


UBRIb

No 2 Slot 1 Slot 0 - - - -

UBRI



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Priority

BoardType

Board

Mandatory

MaximumQuantity



UBBPd_G



LBBPd


LBBPc

UBBPd_L



4.2.6 BBU Slot Assignment in a UL, U*L, or U*T Base StationThis section describes the principles for BBU3900 slot assignment in a UL, U*L, or U*T basestation.



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BBU Slot Assignment in a UL Base StationNOTE

l The UL base station is a separate-MPT UMTS/LTE dual-mode base station. In a UL base station, asingle BBU is configured with two main control boards, in which one works in UMTS mode and theother works in LTE mode.

l The U*Lor U*T base station is a co-MPT UMTS/LTE dual-mode base station. In a U*Lor U*T basestation, the main control board in a single BBU can work in UMTS and LTE dual-mode.





Priority

BoardType

Board Mandatory

MaximumQuantity


1 Maincontrol boardinUMTSmode

UMPTb

Yes 1 Slot 7 - - - -

UMPTa1

WMPT

2 Maincontrol boardinLTEmode

UMPTb

Yes 1 Slot 6 - - - -

UMPTa2andUMPTa6

LMPT



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Priority

BoardType

Board Mandatory

MaximumQuantity



UTRPc


UTRP6

UTRP9

UTRP2

UTRPa

UTRP3

UTRP4


USCUb22

No 1 Slot5 Slot 1 - - -

USCUb14


USCUb11


WBBPf


WBBPd

WBBPb

WBBPa

UBBPd_U

6 Basebandprocessingboardin

LBBPd


LBBPc



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Priority

BoardType

Board Mandatory

MaximumQuantity


LTEFDDmode

UBBPd_L

NOTE






BBU Slot Assignment in a U*L or U*T Base StationThe following figure shows the BBU slot assignment.




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The following table describes the principles for BBU slot assignment in a U*L base station. Theprinciples for BBU slot assignment in a U*T base station are the same as those in a U*L basestation.


Priority

BoardType

Board

Mandatory

MaximumQuantity


1 MaincontrolboardinU*Lmode

UMPTb


UMPTa

2 Transmissionboard

UTRPc



USCUb22

No 1 Slot 5 Slot 1 - - - -

USCUb14


USCUb11


UBBPd

No 2 Slot 3 Slot 2 - - - -


WBBPf

Yes 5 Slot 3 Slot 0 Slot 1 Slot 4 Slot 5 -

WBBPd

WBBPb



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Priority

BoardType

Board

Mandatory

MaximumQuantity


WBBPa

UBBPd_U


LBBPd


LBBPc

UBBPd_L



4.2.7 BBU Slot Assignment in a Triple-Mode Base StationThis section describes the principles for BBU3900 slot assignment in a triple-mode base station.

BBU Slot Assignment in a Triple-Mode Base StationNOTE

l A GU+L base station is configured with two BBUs, in which one works in GU mode, the other worksin LTE mode.

l A G[U*L] base station is configured with one BBU, which works in triple-mode. The BBU isconfigured with two main control boards, in which one (GTMU or GTMUb) works in GSM mode, andthe other (UMPT) works in UMTS and LTE dual-mode.

l A G*U*L base station is configured with one BBU, which supports triple modes using one UMPT.

The following table describes the principles for BBU slot assignment in a triple-mode basestation in various application scenarios.



32


Application Scenario Description

Separate-MPT triple-mode base stationconfigured with two BBUsl GU+L (BBUs not interconnected)l GL+U (BBUs not interconnected)

l For the BBU slot assignment in a GU basestation, see BBU Slot Assignment in aGU Base Station.

l For the BBU slot assignment in an LTEbase station, see 4.2.3 BBU SlotAssignment in an LTE FDD/LTE TDDBase Station.

l For the BBU slot assignment in a GL basestation, see BBU Slot Assignment in aGL Base Station.

l For the BBU slot assignment in a UMTSbase station, see 4.2.2 BBU SlotAssignment in a UMTS Base Station.



33


Separate-MPT triple-mode base stationconfigured with two BBUsl GU+L (BBUs interconnected)l GL+U (BBUs interconnected)l GU+UL (BBUs interconnected)

GU+L (BBUs interconnected)l In the BBU working in GU mode, except

that the UCIU is newly added, theconfiguration of the other boards is thesame as that in BBU Slot Assignment ina GU Base Station. The following tabledescribes the configuration principles ofthe UCIU.

l In the BBU working in LTE mode, aUMPT must be configured as the maincontrol board. The configuration of theother boards is the same as that in 4.2.3BBU Slot Assignment in an LTE FDD/LTE TDD Base Station.

GL+U (BBUs interconnected)l In the BBU working in GL mode, except

that the UCIU is newly added, theconfiguration of the other boards is thesame as that in BBU Slot Assignment ina GL Base Station. The following tabledescribes the configuration principles ofthe UCIU.

l In the BBU working in UMTS mode, aUMPT must be configured as the maincontrol board. The configuration of theother boards is the same as that in 4.2.2BBU Slot Assignment in a UMTS BaseStation.

GU+UL (BBUs interconnected)l In the BBU working in GU mode, except


l In the BBU working in UL mode, a UMPTmust be configured as the main controlboard. The configuration of the otherboards is the same as that in BBU SlotAssignment in a UL Base Station.



34


Separate-MPT base station configured withone BBUl G[U*L]l G[U*T]l G[L*T]l U[L*T]

The principles for BBU slot assignment in aG[U*T] base station are the same as those ina G[U*L] base station. For details, see BBUSlot Assignment in a G[U*L] or G[U*T]Base Station.For the principles for BBU slot assignment ina G[L*T] base station, see BBU SlotAssignment in a G[L*T] Base Station.For the principles for BBU slot assignment ina U[L*T] base station, see BBU SlotAssignment in a U[L*T] Base Station.

Co-MPT base station configured with oneBBUl G*U*Ll G*L*T

For the principles for BBU slot assignment ina G*U*L base station, see BBU SlotAssignment in a G*U*L Base Station.The principles for BBU slot assignment in aG*L*T base station are the same as those ina G*L base station. For details, see BBU SlotAssignment in a G*L Base Station.

Co-MPT base station configured with twoBBUs, both in G*U*L mode

For details, see Typical Configuration ofBBU Boards in a G*U*L+G*U*L BaseStation (BBUs Interconnected).

The following figure shows configuration principles for the UCIU.

Table 4-13 Configuration principles for the UCIU

BoardType

Board MandatoryorNot

MaximumQuantity

Slot Assignment Priorities (Descending fromLeft to Right)

Interconnectionboard

UCIU Yes 1 Slot 4 Slot 0 Slot 1 - - -

BBU Slot Assignment in a G[U*L] or G[U*T] Base StationThe following figure shows the BBU slot assignment in a G[U*L] base station. The BBU slotassignment in a G[U*T] base station is the same as that in a G[U*L] base station.



35


The following table describes the principles for BBU slot assignment in a G[U*L] base station.The principles for BBU slot assignment in a G[U*T] base station are the same as those in a G[U*L] base station.


Priority

BoardType

Board

Mandatory

MaximumQuantity


1 MaincontrolboardinGSMmode

GTMUb

Yes 1 Slot 6 - - - - -

GTMU


UMPTb

Yes 1 Slot 7 - - - - -

UMPTa


UTRPb4

No 2 Slot 4 Slot 0 Slot 1 - - -

4 Satellite-

USCUb22

No 1 Slot 1 - - - - -



36

Priority

BoardType

Board

Mandatory

MaximumQuantity


cardboard

USCUb14


USCUb11


UBBP

No 2 Slot 3 Slot 2


UBRIb

Yes 1 Slot 2 - - - - -

UBRI


UBBPd_G

Yes 2 Slot 1 Slot 0 Slot 4


WBBPf

Yes 4 Slot 3 Slot 0 Slot 1 Slot 4 - -

WBBPd

WBBPb

WBBPa



37

Priority

BoardType

Board

Mandatory

MaximumQuantity


UBBPd_U


LBBPd


LBBPc

UBBPd_L

NOTE





BBU Slot Assignment in a U[L*T] Base StationThe following figure shows the BBU slot assignment in a U[L*T] base station.



38




Priority

BoardType

Board

Mandatory

MaximumQuantity


1 MaincontrolboardinUMTSmode

UMPTb

Yes 1 Slot 7 - - - - -

UMPTa1

WMPT

2 MaincontrolboardinL*Tmode

UMPTb

Yes 1 Slot 6 - - - - -

UMPTa2andUMPTa6


UTRPc

No 2 Slot 4 Slot0 Slot 1 - - -

UTRP6

UTRP9

UTRP2



39

Priority

BoardType

Board

Mandatory

MaximumQuantity


UTRPa

UTRP3

UTRP4


USCUb22

No 1 Slot 1 - - - - -

USCUb14


USCUb11


WBBPf


WBBPd

WBBPb

WBBPa

UBBPd_U


LBBPd_L


UBBPd_L

7 BasebandprocessingboardinLTE

LBBPd_T




40

Priority

BoardType

Board

Mandatory

MaximumQuantity


TDDmode

UBBPd_T

BBU Slot Assignment in a G[L*T] Base StationThe following figure shows the BBU slot assignment in a G[L*T] base station.




Priority

BoardType

Board

Mandatory

MaximumQuantity


1 MaincontrolboardinGSMmode

GTMUb

Yes 1 Slot 6 - - - - -

GTMU



41

Priority

BoardType

Board

Mandatory

MaximumQuantity


2 MaincontrolboardinL*Tmode

UMPTb

Yes 1 Slot 7 - - - - -

UMPTa2andUMPTa6


UTRPb4



USCUb22

No 1 Slot 1 - - - - -

USCUb14


USCUb11


UBRIb

No 1 Slot 2 - - - - -

UBRI


UBBPd_G


7 Basebandproce

LBBPd_L




42

Priority

BoardType

Board

Mandatory

MaximumQuantity


ssingboardinLTEFDDmode

UBBPd_L

8 BasebandprocessingboardinLTETDDmode

LBBPd_T


UBBPd_T

NOTE

If the LTE FDD and LTE TDD baseband boards are configured in the same BBU, the priority of slotassignment is: LTE FDD > LTE TDD.

BBU Slot Assignment in a G*U*L Base StationThe following figure shows the BBU slot assignment.





43


Priority

BoardType

Board

Mandatory

MaximumQuantity


1 Maincontrolboard

UMPTb


UMPTa

2 Transmissionboard

UTRPc



USCUb22

No 1 Slot 5 Slot 1 - - - -

USCUb14


USCUb11


UBBP

No 2 Slot 3 Slot 2 - - - -


UBRIb

No 2 Slot 1 Slot 0 - - - -

UBRI



44

Priority

BoardType

Board

Mandatory

MaximumQuantity



UBBPd_G



WBBPf


WBBPd

WBBPb

WBBPa

UBBPd_U

8 BasebandprocessingboardinLTEmode

LBBPd


LBBPc

UBBPd_L





45

Typical Configuration of BBU Boards in a G*U*L+G*U*L Base Station (BBUsInterconnected)

The following figure shows the typical slot assignment in a G*U*L+G*U*L base station withtwo interconnected BBUs.

Figure 4-28 Typical configuration of BBU boards in a G*U*L+G*U*L base station (BBUsinterconnected)

4.2.8 BBU Slot Assignment in a Quadruple-Mode Base StationThis section describes the principles for BBU3900 slot assignment in a quadruple-mode basestation.

BBU Slot Assignment in a Quadruple-Mode Base StationThe following table describes the principles for BBU slot assignment in a separate-MPTquadruple-mode base station in various application scenarios.



46

Table 4-18 Principles for BBU slot assignment in a quadruple-mode base station


Separate-MPT quadruple-mode base stationconfigured with dual BBUs: GU+L*T (UCIU+UMPT)

GU+L*T (UCIU+UMPT):l In the BBU working in GU mode, except


l In the BBU working in L*T mode, theboard configuration is the same as that inBBU Slot Assignment in an L*T BaseStation.

Co-MPT quadruple-mode base stationconfigured with a single BBU: G*U*L*T

For the BBU slot assignment in a G*U*L*Tbase station, see BBU Slot Assignment in aG*U*L*T Base Station.

The following figure shows configuration principles for the UCIU.

Table 4-19 Configuration principles for the UCIU

BoardType

Board MandatoryorNot

MaximumQuantity

Slot Assignment Priorities (Descending fromLeft to Right)

Interconnectionboard

UCIU Yes 1 Slot 4 Slot 0 Slot 1 - - -

BBU Slot Assignment in a G*U*L*T Base StationThe following figure shows the BBU slot assignment in a G*U*L*T base station.




47



Priority

BoardType

Board Mandatory

MaximumQuantity


1 Maincontrol board

UMPTb1

Yes 2 Slot 7 Slot 6 - - -

2 Transmissionboard

UTRPc



USCUb22

No 1 Slot 5 Slot 1 - - -

USCUb14


USCUb11


UBBPd



UBRIb


UBRI

6 Basebandproces

WBBPf




48

Priority

BoardType

Board Mandatory

MaximumQuantity


singboardinUMTSmode

WBBPd

WBBPb

WBBPa

UBBPd_U


LBBPd_L


UBBPd_L

8 BasebandprocessingboardinLTETDDmode

LBBPd_T


UBBPd_T





49


4.3.1 BBU Slot Assignment in GSM Base StationsThis section describes the principles for BBU3910 slot assignment in GSM base stations.

BBU Slot Assignment in a GBTS

The following figure shows the BBU slot assignment in a GBTS.




Priority

BoardType

BoardName

Mandatory

MaximumQuantity


1 Maincontrol board

GTMUb


2 Transmissionboard

UTRPc



USCUb22

No 1 Slot 1 - - - -

USCUb14




50

Priority

BoardType

BoardName

Mandatory

MaximumQuantity



UBBPd_G

No 2 Slot 3 Slot 2 Slot 1 Slot 0 Slot 4


UBRIb


The following figure shows the typical configuration of boards in a BBU.

Figure 4-32 Typical configuration of boards in a BBU

BBU Slot Assignment in an eGBTSThe following figure shows the BBU slot assignment in an eGBTS.




51



Priority

BoardType

BoardName

Mandatory

MaximumQuantity


1 Maincontrolboard

UMPTb1

Yes 1 Slot 7 - - - - -


USCUb22

No 1 Slot 5 Slot 1 - - - -

USCUb14



UBBPd_G

No 2 Slot 3 Slot 2 Slot 1 Slot 0 Slot 4 Slot 5


UBRIb


NOTE

At least one UBBPd_G or UBRIb board needs to be configured in a BBU.





52

4.3.2 BBU Slot Assignment in a UMTS Base StationThis section describes the principles for BBU slot assignment in a UMTS base station.

The following figure shows the BBU slot assignment in a UMTS base station.


The following table describes the principles for BBU slot assignment in a UMTS base station.


Priority

BoardType

Board

Mandatory

MaximumQuantity


1 Maincontrolboard

UMPTb1


2 Transmissionboard

UTRPc


UTRPa


USCUb22

No 1 Slot5 Slot1 - - - -

USCUb14



UBBPd_U




53



4.3.3 BBU Slot Assignment in an LTE FDD/LTE TDD Base StationThis section describes the principles for BBU3910 slot assignment in an LTE FDD or LTE TDDsingle-mode base station.

The principles for BBU slot assignment in an LTE TDD base station are the same as those in anLTE FDD base station. The following figure shows the principles for BBU slot assignment inan LTE FDD base station.




Priority

BoardType

Board

Mandatory

MaximumQuantity


1 Maincontrolboardin

UMPTb1




54

Priority

BoardType

Board

Mandatory

MaximumQuantity


LTEFDDmode

UMPTb2


USCUb22

No 1 Slot 5 Slot 1 - - - -

USCUb14


USCUb11


UBBPd_L




4.3.4 BBU Slot Assignment in GU and G*U Base StationsThis section describes the principles for BBU3910 slot assignment in GU and G*U base stations.

BBU Slot Assignment in a GU Base Station (Including GBTS)The following figure shows the BBU slot assignment in a GU base station.



55




Priority

BoardType

BoardName

Mandatory

MaximumQuantity


1 GSMmaincontrol board

GTMUb


2 UMTS maincontrol board

UMPTb1

Yes 1 Slot 7 - - - -

3 UMTStransmissionboard

UTRPc


UTRPa


USCUb22

No 1 Slot 1 - - - -

USCUb14


5 UMTSbasebandprocessingboard

UBBPd_U




56

Priority

BoardType

BoardName

Mandatory

MaximumQuantity


6 GSMbasebandprocessingboard

UBBPd_G


7 GSMbasebandradiointerfaceboard

UBRIb




BBU Slot Assignment in a GU Base Station (Including eGBTS)The following figure shows the BBU slot assignment in a GU base station.




57



Priority

BoardType

BoardName

Mandatory

MaximumQuantity


1 GSMmaincontrolboard

UMPTb1

Yes 1 Slot 6 - - - - -

2 UMTSmaincontrolboard

UMPTb1

Yes 1 Slot 7 - - - - -

3 UMTStransmissionboard

UTRPc


UTRPa


USCUb22

No 1 Slot 5 Slot 1 - - - -

USCUb14



UBBPd_U



UBBPd_G




58

Priority

BoardType

BoardName

Mandatory

MaximumQuantity



UBRIb


NOTE




BBU Slot Assignment in a G*U Base StationThe following figure shows the BBU slot assignment in a G*U base station.





59


Priority

BoardType

BoardName

Mandatory

MaximumQuantity


1 G*Umaincontrolboard

UMPTb1


2 Transmissionboard

UTRPc


UTRPa


USCUb22

No 1 Slot 5 Slot 1 - - - -

USCUb14


4 Multimodebasebandprocessingboard

UBBP

No 2 Slot 3 Slot 2 Slot 1 Slot 0 Slot 4 Slot5


UBBPd_U


6 GSMormultimodebasebandradiointerfaceboard

UBRIb




60

Priority

BoardType

BoardName

Mandatory

MaximumQuantity



UBBPd_G




4.3.5 BBU Slot Assignment in GL or G*L Base StationsThis section describes the principles for BBU3910 slot assignment in GL and G*L base stations.

BBU Slot Assignment in a GL Base Station (Including GBTS)The following figure shows the BBU slot assignment in a GL base station.





61


Priority

BoardType

BoardName

Mandatory

MaximumQuantity


1 GSMmaincontrol board

GTMUb

Yes 1 Slot 6 - - - -

2 LTEFDDmaincontrol board

UMPTb1

Yes 1 Slot 7 - - - -

UMPTb2


USCUb22

No 1 Slot 1 - - - -

USCUb14


USCUb11

4 LTEbasebandprocessingboard

UBBPd_L



UBBPd_G



UBRIb





62


BBU Slot Assignment in a GL Base Station (Including eGBTS)

The following figure shows the BBU slot assignment in a GL base station.




Priority

BoardType

BoardName

Mandatory

MaximumQuantity


1 GSMmaincontrolboard

UMPTb1

Yes 1 Slot 6 - - - - -

2 LTEFDDmaincontrolboard

UMPTb1

Yes 1 Slot 7 - - - - -



63

Priority

BoardType

BoardName

Mandatory

MaximumQuantity



USCUb22

No 1 Slot 5 Slot 1 - - - -

USCUb14


USCUb11

4 LTEbasebandprocessingboard

UBBPd_L



UBBPd_G



UBRIb


NOTE






64

BBU Slot Assignment in a G*L Base StationThe following figure shows the BBU slot assignment in a G*L base station.




Priority

BoardType

BoardName

Mandatory

MaximumQuantity


1 G*Lmaincontrolboard

UMPTb1



USCUb22

No 1 Slot 5 Slot 1 - - - -

USCUb14


USCUb11

3 Multimodebasebandprocessingboard

UBBP




65

Priority

BoardType

BoardName

Mandatory

MaximumQuantity


4 LTEFDDbasebandprocessingboard

UBBPd_L



UBBPd_G


6 GSMormultimodebasebandradiointerfaceboard

UBRIb




4.3.6 BBU Slot Assignment in a UL or U*L Base StationThis section describes the principles for BBU slot assignment in a UL base station.



66

BBU Slot Assignment in a UL Base Station





Priority

BoardType

Board

Mandatory

MaximumQuantity


1 MaincontrolboardinUMTSmode

UMPTb1

Yes 1 Slot 7 - - - - -

2 MaincontrolboardinLTEFDDmode

UMPTb1

Yes 1 Slot 6 - - - - -

3 TransmissionboardinUMT

UTRPc




67

Priority

BoardType

Board

Mandatory

MaximumQuantity


Smode

UTRPa


USCUb22

No 1 Slot 5 Slot 1 - - - -

USCUb14


USCUb11


UBBPd_U



UBBPd_L






68

BBU Slot Assignment in a U*L Base Station





Priority

BoardType

Board

Mandatory

MaximumQuantity



UMPTb1


2 Transmissionboard

UTRPc



USCUb22

No 1 Slot 5 Slot 1 - - - -

USCUb14


USCUb11



69

Priority

BoardType

Board

Mandatory

MaximumQuantity



UBBP



UBBPd_U



UBBPd_L






70

4.3.7 BBU Slot Assignment in a Triple-Mode Base StationThis section describes the principles for BBU slot assignment in a triple-mode base station.

BBU Slot Assignment in a Triple-Mode Base StationThe following table describes the BBU slot assignment in a separate-MPT triple-mode basestation in various application scenarios.

Table 4-33 BBU slot assignment


Separate-MPT triple-mode base stationconfigured with two BBUsl GU+L base station (BBUs

interconnected)l GL+U base station (BBUs

interconnected)

GU+L base station (BBUs interconnected)l For the BBU slot assignment in a GU base

station, see 4.3.4 BBU Slot Assignmentin GU and G*U Base Stations.

l For the BBU slot assignment in an LTEbase station, see BBU Slot Assignment ina GU Base Station.

GL+U (BBUs interconnected)l For the BBU slot assignment in a GL base

station, see 4.3.5 BBU Slot Assignmentin GL or G*L Base Stations.

l For the BBU slot assignment in a UMTSbase station, see BBU Slot Assignment ina GL Base Station.

Co-MPT triple-mode base station configuredwith one BBUl G*U*L base stationl G*U*T base stationl G*L*T base stationl U*L*T base station

For the BBU slot assignment in a G*U*L basestation, see BBU Slot Assignment in aG*U*L Base Station.For the BBU slot assignment in a G*U*T basestation, see BBU Slot Assignment in aG*U*T Base Station.For the BBU slot assignment in a G*L*T basestation, see BBU Slot Assignment in aG*L*T Base Station.For the BBU slot assignment in a U*L*T basestation, see BBU Slot Assignment in aU*L*T Base Station.

BBU Slot Assignment in a G*U*L Base StationThe following figure shows the BBU slot assignment in a G*U*L base station.



71




Priority

BoardType

BoardName

Mandatory orNot

MaximumQuantity


1 Maincontrolboard

UMPTb1


2 Transmissionboard

UTRPc



USCUb22

No 1 Slot 5 Slot 1 - - - -

USCUb14


USCUb11



72

Priority

BoardType

BoardName

Mandatory orNot

MaximumQuantity


4 Basebandprocessingboardworking inmultiplemodes

UBBP


5 Basebandprocessingboardworking inLTEFDDmode

UBBPd_L


6 Basebandprocessingboardworking inUMTSmode

UBBPd_U


7 Basebandprocessingboardworking inGSMmode

UBBPd_G




73

Priority

BoardType

BoardName

Mandatory orNot

MaximumQuantity


8 Basebandradiointerfaceboardworking inGSMmodeormultiplemodes

UBRIb




BBU Slot Assignment in a G*U*T Base StationThe following figure shows the BBU slot assignment in a G*U*T base station.



74




Priority

BoardType

BoardName

Mandatory orNot

MaximumQuantity


1 Maincontrolboard

UMPTb1


2 Transmissionboard

UTRPc



USCUb22

No 1 Slot 5 Slot 1 - - - -

USCUb14


USCUb11

4 Basebandprocessingboardworking inLTETDDmode

UBBPd_T




75

Priority

BoardType

BoardName

Mandatory orNot

MaximumQuantity



UBBPd_U



UBBPd_G



UBRIb





76


BBU Slot Assignment in a G*L*T Base Station

The following figure shows the BBU slot assignment in a G*L*T base station.




Priority

BoardType

BoardName

Mandatory orNot

MaximumQuantity


1 Maincontrolboard

UMPTb1


2 Transmissionboard

UTRPc




77

Priority

BoardType

BoardName

Mandatory orNot

MaximumQuantity



USCUb22

No 1 Slot 5 Slot 1 - - - -

USCUb14


USCUb11


UBBPd_L



UBBPd_T



UBBPd_G




78

Priority

BoardType

BoardName

Mandatory orNot

MaximumQuantity



UBRIb




BBU Slot Assignment in a U*L*T Base StationThe following figure shows the BBU slot assignment in a U*L*T base station.



79




Priority

BoardType

BoardName

Mandatory orNot

MaximumQuantity


1 Maincontrolboard

UMPTb1


2 Transmissionboard

UTRPc



USCUb22

No 1 Slot 5 Slot 1 - - - -

USCUb14


USCUb11


UBBPd_L




80

Priority

BoardType

BoardName

Mandatory orNot

MaximumQuantity



UBBPd_T



UBBPd_U




4.3.8 BBU Slot Assignment in a Quadruple-Mode Base StationThis section describes the principles for BBU slot assignment in a quadruple-mode base station.

In a G*U*L*T base station, one BBU3910 is configured to work in quadruple modes.

NOTE

In a G*U*L*T base station, a single BBU is configured with one UMPT to work in quadruple modes.



81

The following figure shows the BBU slot assignment in a G*U*L*T base station.




Priority

BoardType

BoardName

Mandatory orNot

MaximumQuantity


1 Maincontrolboard

UMPTb1


2 Transmissionboard

UTRPc


UTRPa


USCUb22

No 1 Slot 5 Slot 1 - - - -

USCUb14


USCUb11



82

Priority

BoardType

BoardName

Mandatory orNot

MaximumQuantity


4 Basebandprocessingboardworking inmultiplemodes

UBBP

No 2 Slot 3 Slot 2 - - - -


UBBPd_L



UBBPd_T



UBBPd_U




83

Priority

BoardType

BoardName

Mandatory orNot

MaximumQuantity



UBBPd_G


9 Basebandradiointerfaceboardworking inGSMmode

UBRIb






84

5 Boards in a BBU

About This Chapter

A BBU includes the following boards: the main processing board, baseband processing board,transmission extension board, fan module, power module, monitoring module, clock board witha satellite card, baseband extension board, and infrastructure interconnection board.

5.1 UMPTThe universal main processing and transmission unit (UMPT) can be installed in a BBU3900 orBBU3910.

5.2 WMPTThe WCDMA main processing and transmission unit (WMPT) can be installed in a BBU3900to support UMTS mode.

5.3 GTMUThe GSM transmission and timing and management unit (GTMU) can be installed in a BBU3900to support GSM mode. The GSM transmission and timing and management unit type b (GTMUb)can be installed in a BBU3900 or BBU3910 to support GSM mode.

5.4 LMPTThe LTE main processing and transmission unit (LMPT) can be installed in a BBU3900 tosupport LTE mode.

5.5 UBBPThe universal baseband processing unit (UBBP) can be configured in a BBU3900 or BBU3910.

5.6 WBBPThe WCDMA baseband processing unit (WBBP) can be installed in a BBU3900 to supportUMTS mode.

5.7 LBBPThe LTE baseband process unit (LBBP) can be installed in a BBU3900 to support LTE mode.

5.8 FANThe FAN is a fan module in a BBU3900. The FAN or FANc can only be installed in a BBU3900and the FANd can only be installed in a BBU3910.

5.9 UPEU

BBU3900Hardware Description 5 Boards in a BBU


85

The universal power and environment interface unit (UPEU) is a power module in a BBU3900or BBU3910. The UPEUd can be installed in a BBU3900 or BBU3910, but other types of UPEUcan only be installed in a BBU3900.

5.10 UEIUThe universal environment interface unit (UEIU) is a environment monitoring unit in a BBU3900or BBU3910.

5.11 UTRPThe universal transmission processing unit (UTRP) is an extension transmission. The UTRPccan be installed in a BBU3900 or BBU3910 and other types of UTRP boards can only be installedin a BBU3900.

5.12 USCUThe universal satellite card and clock unit (USCU) can be installed in a BBU3900 or BBU3910.

5.13 UBRIThe universal baseband radio interface unit (UBRI) can only be installed in a BBU3900.However, the universal baseband radio interface board type b (UBRIb) can be installed in aBBU3900 or BBU3910.

5.14 UCIUThe universal inter-connection infrastructure unit (UCIU) can be installed in a BBU3900.

5.15 Optical ModulesAn optical module transmits optical signals between an optical port and a fiber optic cable.



86

5.1 UMPTThe universal main processing and transmission unit (UMPT) can be installed in a BBU3900 orBBU3910.

Specifications

The following table lists the transmission specifications of the UMPT.

Table 5-1 Transmission specifications of the UMPT

Board ApplicableMode

Transmission Mode

Quantity ofPorts

PortCapacity

Full/Half-Duplex

UMPTa1,UMPTa2, orUMPTb1

l GSMsingle-mode

l UMTSsingle-mode

l LTEFDDsingle-mode

l Co-MPTmultimode(including anymode)

ATM overE1/T1a or IPover E1/T1

1 Fourchannels

-

Transmission over FE/GE electricalports

1 10 Mbit/s,100 Mbit/s,or 1000Mbit/s

Full-duplex

Transmission over FE/GE opticalports

1 100 Mbit/s or1000 Mbit/s

Full- or half-duplex

UMPTb2 l GSMsingle-mode

l UMTSsingle-mode

l LTEFDDsingle-mode

l LTETDDsingle-mode

l Co-MPTmultimod

ATM overE1/T1a or IPover E1/T1

1 Fourchannels

-



Full-duplex



87


Transmission Mode

Quantity ofPorts

PortCapacity

Full/Half-Duplex

e(including anymode)




UMPTa6 l LTEFDDsingle-mode

l LTETDDsingle-mode

IP over E1/T1

1 Fourchannels

-



Full-duplex




a: Only UMTS mode supports ATM over E1/T1.

The following table lists the carrier specifications of the UMPTb1 working in GSM mode.

Table 5-2 Carrier specifications of the UMPT

Board Applicable Mode TransmissionMode

MaximumNumber ofSupportedCarriers

UMPTb1 GSM IP over E1 or IP overFE

72

The following table lists the signaling specifications of the UMPTa2/UMPTa6/UMPTb2/UMPTb1 working in LTE mode.



88

Table 5-3 Signaling specifications

Board Signaling Specifications (CAPS)

UMPTa2 or UMPTa6 120

UMPTb2 or UMPTb1 150

The following table lists the maximum number of UEs in RRC connected mode supported bythe UMPTa2/UMPTa6/UMPTb2/UMPTb1 working in LTE mode.

Table 5-4 Maximum number of UEs in RRC connected mode

Board Maximum Number of UEs in RRCConnected Mode

UMPTa2, UMPTa6, UMPTb2, or UMPTb1 10800

The maximum number of data radio bearers (DRBs) supported by the UMPTa2/UMPTa6/UMPTb2/UMPTb1 working in LTE mode is three times the maximum number of UEs in RRCconnected mode.

NOTE

For signaling specifications of the eNodeB and NodeB, see section "Signaling Specifications" in 3900Series Base Station Technical Description. For the maximum number of DRBs and the maximum numberof UEs in RRC connected mode supported by the eNodeB, see section "Baseband Specifications" in 3900Series Base Station Technical Description.

FunctionThe UMPT performs the following functions:

l Manages configuration and devices, monitors performance, and processes signaling.l Processes signaling and manages resources for other boards in the BBU.l Provides the USB port, transmission port, maintenance port to provide signal transmission,

perform automatic software upgrade, and support BBU maintenance on the LMT orU2000.

Working PrincipleThe following figure shows the working principle of the UMPT.



89

Figure 5-1 Working principle of the UMPT

PanelFigure 5-2, Figure 5-3, Figure 5-4, Figure 5-5, and Figure 5-6 show the panels of the UMPTboards.

NOTE

In the lower left of the UMPTa1, UMPTa2, UMPTa6, UMPTb1, and UMPTb2, there are silkscreensUMPTa1, UMPTa2, UMPTa6, UMPTb1, and UMPTb2, respectively, indicating their board types.

Figure 5-2 UMPTa1 panel





90

Figure 5-5 UMPTb1 panel

Figure 5-6 UMPTb2 panel

Port

The following table describes the ports on the UMPT panel.

Table 5-5 Ports on the UMPT panel

Silkscreen Connector Description

E1/T1 DB26 femaleconnector

E1/T1 signal transmission port

FE/GE0 RJ45 connector FE electrical signal transmission port

FE/GE1 SFP femaleconnector

FE optical signal transmission port

GPS SMA connector The GPS ports on the UMPTa1, UMPTa2, andUMPTb1 are reserved.Used for transmitting radio frequency (RF)signals received from the antenna to the satellitecard (GPS ports on the UMPTa6 and UMPTb2).

USBa USB connector Used for the software upgrade of a base stationusing a USB flash drive. This port also functionsas a commissioning Ethernet portb.

CLK USB connector l Receives TOD signals.l Port for clock signal outputs. The clock signals

are used for testing.



91


CI SFP femaleconnector

Used for BBU interconnection.

RST - Used for resetting the board.

a: The security of the USB port is ensured by encryption, and the USB port can be shut downusing commands.b: When the USB port functions as a commissioning Ethernet port, ensure that an OM porthas been enabled and the user has obtained required authorities for accessing the base stationthrough the OM port before accessing the base station through the USB port.

IndicatorThe following table describes the three status indicators on the UMPT panel.

Table 5-6 Status indicators on the UMPT

Silkscreen Color Status Description

RUN Green Steady on There is powersupply, but the boardis faulty.

Steady off There is no powersupply, or the boardis faulty.

Blinking (on for 1sand off for 1s)

The board is runningproperly.

Blinking (on for0.125s and off for0.125s)

l The board isbeing loaded orconfigured.

l The board is notstarted.

ALM Red Steady on An alarm isgenerated, and theboard needs to bereplaced.

Steady off The board is runningproperly.



92



An alarm isgenerated, and youneed to locate thefault beforedetermining whetherto replace the board.

ACT Green Steady on The board serves asan active board.

Steady off l The board doesnot serve as anactive board.

l The board has notbeen activated.

l The board is notproviding anyservices.


The operation andmaintenance link(OML) isdisconnected.


The board is beingtested, for example,going through anRRU VoltageStanding Wave Ratio(VSWR) test byusing a USB flashdrivea.NOTE

Only the UMPTb1working in UMTSmode and theUMPTa1 have thisindicator status.



93


In every 4s, theindicator is on for0.125s and off for0.125s (eight times)in the first 2s and thenoff for 2s.

l All cellsconfigured in thesubrack thathouses this boardare not activated.

l The S1 link isfaulty.

NOTEOnly the UMPTb1working in LTE modeand the UMPTa2 andUMPTa6 have thisindicator status.

a: The security of the USB port is ensured by encryption, and the USB port can be shut downusing commands.

Besides the preceding three indicators, some other indicators indicate the connection status ofthe FE/GE optical port, FE/GE electrical port, interconnection port, and E1/T1 port. Theindicators that indicate the connection status of the FE/GE optical port and FE/GE electrical portare on both sides of the corresponding ports and have no silkscreen, as shown in the followingfigure.

Figure 5-7 Indicators for ports

The following table describes the indicators for ports on the UMPT panel.

Table 5-7 Status of the indicators for ports on the UMPT panel

CorrespondingPort/Silkscreen

Color Status Description

FE/GE optical port Green (LINK on theleft)

Steady on The connection isnormal.

Steady off The connection isabnormal.



94



Orange (ACT on theright)

Blinking Data is beingtransmitted.

Steady off No data is beingtransmitted.

FE/GE electrical port Green (LINK on theleft)

Steady on The connection isnormal.

Steady off The connection isabnormal.


Blinking Data is beingtransmitted.

Steady off No data is beingtransmitted.

CI Red or green Steady green The interconnectionlink is functioningproperly.

Steady red An optical modulefails to transmit orreceive signals due toone of the followingcauses:l The optical

module is faulty.l The fiber optic

cable is broken.



95



Blinking red (on for0.125s and off for0.125s)

The incorrect cableconnections andcorrespondingindicator status are asfollows:l The S0 port on the

UCIU in oneBBU connects tothe CI port onUMPT in theother BBU, andindicators for allincorrectlyconnected portsare blinking.

l The ports areconnected in ringtopology, andindicators for allincorrectlyconnected portsare blinking.

Steady off The optical modulecannot be detected.

L01 Red or green Steady off E1/T1 links 0 and 1are not set up, or aLoss Of Signal(LOS) alarm isgenerated.

Steady green E1/T1 links 0 and 1are workingproperly.

Blinking green (onfor 1s and off for 1s)

E1/T1 link 0 isworking properly,but E1/T1 link 1 isnot set up or an LOSalarm is generated.

Blinking green (onfor 0.125s and off for0.125s)




96



Steady red Alarms are generatedon both E1/T1 links 0and 1.

Blinking red (on for1s and off for 1s)

An alarm isgenerated on E1/T1link 0.



L23 Red or green Steady off E1/T1 links 2 and 3are not set up, or anLOS alarm isgenerated.

Steady green E1/T1 links 2 and 3are workingproperly.





Steady red Alarms are generatedon both E1/T1 links 2and 3.





There are three indicators (R0, R1, and R2) that indicate in which mode the UMPT is working.The following table lists the meanings of the indicators.



97

Table 5-8 Status indicators on the UMPT


R0 Red or green Steady off The board is notworking in GSMmode.

Steady green The board is workingin GSM mode.

Steady red Reserved

R1 Red or green Steady off The board is notworking in UMTSmode.

Steady green The board is workingin UMTS mode.

Steady red Reserved

R2 Red or green Steady off The board is notworking in LTEmode.

Steady green The board is workingin LTE mode.

Steady red Reserved

DIP SwitchThere are two DIP switches on the UMPTa1, UMPTa2, or UMPTa6, which are SW1 and SW2.Figure 5-8 shows the positions of the DIP switches. There is one DIP switch on the UMPTb1or UMPTb2, which is SW2. Figure 5-9 shows the position of the DIP switch. The meaning andfunction of the DIP switch SW2 on the UMPTb series board are the same as those on the UMPTaseries board.

Figure 5-8 Positions of DIP switches on the UMPTa series board



98

Figure 5-9 Position of the DIP switch on the UMPTb series board

The DIP switches perform the following functions:l SW1 is used to select E1/T1 mode.l SW2 is used to select grounding mode of E1/T1 transmission.

Each DIP switch has four bits. Table 5-9 and Table 5-10 describe the bit settings and meaningsof the DIP switches.

Table 5-9 DIP switch SW1

DIPSwitch

Bit Setting Description

1 2 3 4

SW1 ON ON Reserved Reserved The E1 resistance is set to75 ohms.

OFF ON The E1 resistance is set to120 ohms.

ON OFF The T1 resistance is set to100 ohms.


DIPSwitch


1 2 3 4

SW2 OFF OFF OFF OFF Balanced

ON ON ON ON Unbalanced

5.2 WMPTThe WCDMA main processing and transmission unit (WMPT) can be installed in a BBU3900to support UMTS mode.



99

Specifications

The following table lists the transmission specifications of the WMPT.

Table 5-11 Transmission specifications of the WMPT


Transmission Mode

Quantity ofPorts

PortCapacity

Full/Half-Duplex

WMPT UMTS ATM overE1/T1 or IPover E1/T1

1 Fourchannels

Full-duplex

Transmission over FEoptical ports


Full-duplex

Transmission over FEelectricalports


Full-duplex

NOTE

For combined signaling specifications of the WMPT, see section "Signaling Specifications" in 3900 SeriesBase Station Technical Description.

Panel

The following figure shows the exterior of the WMPT panel.

Figure 5-10 Exterior of the WMPT panel

Function

The WMPT performs the following functions:

l Manages configuration and devices, monitors performance, and processes signaling.

l Processes signaling and manages resources for other boards in the BBU.

l Provides the USB port, transmission port, maintenance port to provide signal transmission,perform automatic software upgrade, and support BBU maintenance on the LMT orU2000.



100

Working PrincipleThe following figure shows the working principle of the WMPT.

Figure 5-11 Working principle of the WMPT

PortThe following table describes the ports on the WMPT.

Table 5-12 Ports on the WMPT

Silkscreen

Connector Description



FE0 RJ45 connector FE electrical signal transmission port

FE1 SFP femaleconnector

FE optical signal transmission port

GPS SMA connector Reserved

ETHa RJ45 connector Local maintenance and commissioning port

TSTb USB connector Port for clock signal outputs. The clock signals are used fortesting.

USBc USB connector USB loading port




101

Silkscreen

Connector Description

a: Before accessing the base station through the ETH port, ensure that an OM port has beenenabled and the user has obtained required authorities for accessing the base station throughthe OM port.b: The USB commission port is used for commissioning the base station rather thanconfiguring and exporting information of the base station.c: The security of the USB port is ensured by encryption, and the USB port can be shut downusing commands.

Indicator

The following table describes the three status indicators on the WMPT panel.

Table 5-13 Status indicators on the WMPT panel















102







The operation andmaintenance link(OML) isdisconnected.


The board is beingtested, for example,going through anRRU VoltageStanding Wave Ratio(VSWR) test byusing a USB flashdrive(2)(3).

Besides the preceding three indicators, the WMPT provides six indicators indicating theconnection status of the FE optical port, FE electrical port, and commissioning port. There is nosilkscreen for six indicators on the WMPT panel, and the indicators are at both sides of thecorresponding ports, as shown in the following figure.

Figure 5-12 Positions of the indicators for ports on the WMPT panel

The following table describes the indicators for ports on the WMPT panel.



103

Table 5-14 Indicators for ports on the WMPT panel

CorrespondingPort


Indicators for theFE1 optical port

Green (LINK on theleft)

Steady on The connection is setup successfully.

Steady off No connection is setup.


Blinking Data is beingtransmitted orreceived.

Steady off No data is beingtransmitted orreceived.

Indicators for theFE0 electrical port







ETH Green (LINK on theleft)






DIP SwitchThere are two DIP switches on the WMPT, which are SW1 and SW2. The following figureshows the positions of the DIP switches.



104

Figure 5-13 Positions of the DIP switches

The DIP switches perform the following functions:l SW1 is used to select E1/T1 mode.l SW2 is used to select grounding mode of E1/T1 transmission.

Each DIP switch has four bits. Table 5-15 and Table 5-16 describe the bit settings and meaningsof the DIP switches.


DIPSwitch


1 2 3 4

SW1 ON ON OFF OFF T1

OFF OFF ON ON The E1resistance isset to 120ohms.

ON ON ON ON The E1resistance isset to 75ohms.

Miscellaneous Unavailable



105


DIPSwitch


1 2 3 4




5.3 GTMUThe GSM transmission and timing and management unit (GTMU) can be installed in a BBU3900to support GSM mode. The GSM transmission and timing and management unit type b (GTMUb)can be installed in a BBU3900 or BBU3910 to support GSM mode.

SpecificationsThe GTMU is classified into two types: GTMU and GTMUb. The following table lists thetransmission specifications of the GTMU and GTMUb.

Table 5-17 Transmission specifications of the GTMU and GTMUb


Transmission Mode

Quantity ofPorts

PortCapacity

Full/Half-Duplex

GTMU/GTMUb

GSM TDM overE1/T1

1 Fourchannels

Full-duplex

Transmission over FEoptical ports


Full-duplex

Transmission over FEelectricalports


Full-duplex

The following table lists the carrier specifications of the GTMU and GTMUb.



106

Table 5-18 Carrier specifications of the GTMU and GTMUb

Board Applicable Mode TransmissionMode

MaximumNumber ofSupportedCarriers

GTMU GSM TDM 72

IP over FE or IP overE1

36

GTMUb GSM TDM 126

IP over FE 72

IP over E1 48

Panel

Figure 5-14 and Figure 5-15 show the exteriors of the GTMU and GTMUb panels, respectively.

Figure 5-14 Exterior of the GTMU panel

Figure 5-15 Exterior of the GTMUb panel

Function

The GTMU and GTMUb perform the following functions:

l Manages configuration and devices, monitors performance, and processes signaling.



107

l Processes signaling and manages resources for other boards in the BBU.

l Provides the USB port, transmission port, maintenance port to provide signal transmission,perform automatic software upgrade, and support BBU maintenance on the LMT orU2000.

l Provides CPRI ports for communication with RF modules.

NOTE

When a GBTS configured with a GTMUb is to be evolved to a co-MPT multimode base station, a UMPTis required to serve as the main control board shared by multiple modes. The original GTMUb serves asan interface board which only provides CPRI ports for connecting the baseband unit to RF modules.

Working Principle

The following figure shows the working principle of the GTMU and GTMUb.

Figure 5-16 Working principle of the GTMU and GTMUb

Port

Table 5-19 describes the ports on the GTMU.

Table 5-19 Ports on the GTMU




EXT (on theGTMUb)

SFP femaleconnector

Reserved

FE0 RJ45 connector FE electrical signal transmission port

FE1 DLC connector FE optical signal transmission port

ETHa RJ45 connector Local maintenance and commissioning port



108


TSTb USB connector Port for clock signal outputs. The clock signalsare used for testing.


CPRI0 to CPRI5 SFP femaleconnector

Data transmission ports connected to the RFmodules. They support the input and output ofoptical and electrical transmission signals.



The following table lists the specifications of CPRI ports on the GTMU and GTMUb.

Table 5-20 Specifications of CPRI ports on the GTMU and GTMUb

Board Quantity of CPRIPorts

CPRI Port Rate(Gbit/s)

Topology Type

GTMU 6 1.25 Star, chain, and ringtopologies

GTMUb 6 1.25/2.5 Star, chain, and ringtopologies

IndicatorThere are three indicators on the GTMU panel. The following table describes their meanings.

Table 5-21 Status indicators on the GTMU panel


RUN Green Steady on There is power supply, but theboard is faulty.

Steady off There is no power supply, or theboard is faulty.



109



The board is running properly.


Software is being loaded to theboard.

ALM Red Steady on An alarm is generated, and theboard needs to be replaced.

Steady off The board is running properly.


An alarm is generated, and youneed to locate the fault beforedetermining whether to replacethe board.

ACT Green Steady on The board serves as an activeboard.


The operation and maintenancelink (OML) is disconnected.

Besides the preceding three indicators, the GTMU provides some other indicators indicating theconnection status of the FE optical port, FE electrical port, CPRI port, commissioning port. Thereis no silkscreens for these indicators on the GTMU panel, and the indicators are near thecorresponding ports. The following figure shows the positions of the indicators for ports on theGTMUb panel.

Figure 5-17 Positions of the indicators for ports on the GTMUb panel

The following table describes the indicators for ports on the GTMUb panel.



110

Table 5-22 Status of the indicators for ports on the GTMUb panel



LIU0 to LIU3 Green Steady on An E1/T1 local alarmis generated.


An E1/T1 remotealarm is generated.

Steady off The link isfunctioning properly.

CPRI0 to CPRI5 Red or green Steady green The CPRI link isfunctioning properly.



cable is broken.


The CPRI link is outof lock due to one ofthe following causes:l There is no

mutual lockbetween dual-mode referenceclock.

l The CPRI portrates do not matcheach other.

Steady off l The opticalmodule cannot bedetected.

l The CPRIelectrical cable isnot connected.

ETH Green (LINK on theleft)





111






FE0 Green (LINK on theleft)






FE1 (on theGTMUb)




Green (ACT on theright)



M_S (on theGTMUb)

- - Indicator for areserved port

EXT (on theGTMUb)

- - Indicator for areserved port

DIP SwitchThere are five DIP switches on the GTMU or GTMUb, which are SW1, SW2, SW3, SW4, andSW5. The following figure shows the positions of the DIP switches.



112

Figure 5-18 Positions of the DIP switches on the GTMU or GTMUb

The DIP switches perform the following functions:l SW1 is used to select E1/T1 mode.l SW2 is used to select grounding mode of E1/T1 transmission.l SW3 is reserved.l SW4 is used to select the E1 bypass.l SW5 is used to set the timeslot when the E1 bypass is selected.

Each DIP switch has four bits. Table 5-23, Table 5-24, Table 5-25, and Table 5-26 describethe bit settings and meanings of SW1, SW2, SW4, and SW5, respectively.


DIPSwitch


1 2 3 4

S1 ON ON OFF OFF The E1 resistance is set to75 ohms.

OFF ON OFF OFF The E1 resistance is set to120 ohms.

ON OFF OFF OFF The T1 resistance is set to100 ohms.




113

NOTE

Bits 3 and 4 of the DIP switch SW1 should use the default settings. They should be set to OFF by default.If the bits are set to ON, set them to OFF.


DIPSwitch


1 2 3 4

S2 OFF OFF OFF OFF All the bits are set toOFF by default in allmodes.

ON ON ON ON When the four E1 RXlinks using 75 ohmshave error bits, all bitsof SW2 must be set toON to rectify the faultson the E1 links.



DIPSwitch


1 2 3 4

S4 ON ON ON ON Supporting E1 bypass

OFF OFF OFF OFF Not supporting the E1bypass



DIPSwitch


1 2 3 4

S5 ON ON ON ON Not supporting the E1bypass

OFF ON ON OFF Supporting the E1bypass of level-1cascaded base stations



114

DIPSwitch


1 2 3 4

ON OFF ON OFF Supporting the E1bypass of level-2cascaded base stations

OFF OFF ON OFF Supporting the E1bypass of level-3cascaded base stations

ON ON OFF OFF Supporting the E1bypass of level-4cascaded base stations

OFF ON OFF OFF Supporting the E1bypass of level-5cascaded base stations


5.4 LMPTThe LTE main processing and transmission unit (LMPT) can be installed in a BBU3900 tosupport LTE mode.

SpecificationsThe following table lists the transmission specifications of the LMPT.

Table 5-27 Transmission specifications of the LMPT


Transmission Mode

Quantity ofPorts

PortCapacity

Full/Half-Duplex

LMPT l LTEFDD

l LTETDD



Full-duplex



Full-duplex

The following table describes the signaling specifications of the LMPT.



115

Table 5-28 Signaling specifications of the LMPT


LMPT 60

The following table lists the maximum number of UEs in RRC connected mode supported bythe LMPT.


Board Maximum Number of UEs in RRCConnected Mode

LMPT 5400

The maximum number of data radio bearers (DRBs) supported by an LMPT is three times themaximum number of UEs in RRC connected mode.

NOTE

For signaling specifications of the eNodeB, see section "Signaling Specifications" in 3900 Series BaseStation Technical Description. For the maximum number of DRBs and the maximum number of UEs inRRC connected mode supported by the eNodeB, see section "Baseband Specifications" in 3900 Series BaseStation Technical Description.

PanelThe following figure shows the exterior of the LMPT panel.

Figure 5-19 Exterior of the LMPT panel

FunctionThe LMPT performs the following functions:

l Manages configuration and devices, monitors performance, and processes signaling.l Processes signaling and manages resources for other boards in the BBU.l Provides the USB port, transmission port, maintenance port to provide signal transmission,

perform automatic software upgrade, and support BBU maintenance on the LMT orU2000.

l Provides the system clock.



116

Working PrincipleThe following figure shows the working principle of the LMPT.

Figure 5-20 Working principle of the LMPT

PortThe following table describes the ports on the LMPT.

Table 5-30 Ports on the LMPT


FE/GE0 and FE/GE1 RJ45 connector FE/GE electrical signaltransmission port

SFP0 and SFP1 SFP female connector FE/GE optical signaltransmission port

GPS SMA connector Used for receiving GPS signals

ETHa RJ45 connector Local maintenance andcommissioning port

TSTb USB connector Port for clock signal outputs.The clock signals are used fortesting.





117



NOTE

Both the SFP0 port and the FE/GE0 port on the LMPT are used for one GE input. Therefore, the two portscannot be used simultaneously.

Both the SFP1 port and the FE/GE1 port on the LMPT are used for another GE input. Therefore, the twoports cannot be used simultaneously.

IndicatorThe following table describes the three status indicators on the LMPT panel.

Table 5-31 Status indicators on the LMPT panel


RUN Green Steady on There is power supply, butthe board is faulty.

Steady off There is no power supply,or the board is faulty.

Blinking (on for1s and off for 1s)



l The board is beingloaded or configured.

l The board is not started.

ALM Red Steady on An alarm is generated, andthe board needs to bereplaced.


Blinking (on for1s and off for 1s)

An alarm is generated, andyou need to locate the faultbefore determining whetherto replace the board.



118


ACT Green Steady on The board serves as anactive board.

Steady off l The board does notserve as an active board.

l The board has not beenactivated.

l The board is notproviding any services.


The operation andmaintenance link (OML) isdisconnected.

In every 4s, theindicator is on for0.125s and off for0.125s (eighttimes) in the first2s and then off for2s.

l All cells configured inthe subrack that housesthis board are notactivated.

l The S1 link is faulty.

Besides the preceding three indicators, the LMPT provides some other indicators indicating theconnection status of the FE optical port, FE electrical port, and commissioning Ethernet port.There are no silkscreens for these indicators on the LMPT panel, and the indicators are near thecorresponding ports. The following figure shows their positions.

Figure 5-21 Positions of the indicators for ports on the LMPT panel

The following table describes the indicators for ports on the LMPT panel.

Table 5-32 Status of the indicators for ports on the LMPT panel


SFP0 and SFP1 Green (LINK) Steady on The connection is setup successfully.




119


Orange (ACT) Blinking Data is beingtransmitted orreceived.


ETH Orange (ACT) Blinking Data is beingtransmitted orreceived.


Green (LINK) Steady on The connection is setup successfully.


FE/GE0 and FE/GE1 Green (LINK) Steady on The connection is setup successfully.


Orange (ACT) Blinking Data is beingtransmitted orreceived.


5.5 UBBPThe universal baseband processing unit (UBBP) can be configured in a BBU3900 or BBU3910.

Specifications

The following table lists types of UBBP.

Table 5-33 Types of UBBP

Board Applicable Mode

UBBPd1 l GSM



120


UBBPd2 l UMTSl GU co-BBP

UBBPd3 l GSMl UMTSl LTE FDDl GU co-BBPl GL co-BBP

UBBPd4 l GSMl UMTSl LTE FDDl LTE TDDl GU co-BBPl GL co-BBP

UBBPd5 l GSMl UMTSl LTE FDDl GU co-BBPl GL co-BBP

UBBPd6 l GSMl UMTSl LTE FDDl LTE TDDl GU co-BBPl GL co-BBPl UL co-BBPl GUL co-BBP

UBBPd9 LTE FDD

Specifications of UBBP boards working in GSM mode

The following table lists the number of TRXs supported by UBBP boards working in GSMmode.



121

Table 5-34 Number of TRXs supported by UBBP boards working in GSM mode

Board Number of 2R TRXs Number of 4R TRXs

UBBPd1, UBBPd2,UBBPd3, or UBBPd4

24 12

UBBPd5 36 18

UBBPd6 48 24

Specifications of UBBP boards working in UMTS mode

Table 5-35 and Table 5-36 list the baseband specifications and signaling specifications of UBBPboards working in UMTS mode, respectively.

Table 5-35 Baseband specifications

Board Numberof Cells

UplinkCE

Downlink CE

NumberofHSDPACodes

NumberofHSDPAUEs

NumberofHSUPAUEs

UBBPd1 6 384 512 6x15 288 288

UBBPd2 6 512 768 6x15 384 384

UBBPd3 6 384 512 6x15 288 288

UBBPd4 6 512 768 6x15 384 384

UBBPd5 6 768 768 6x15 512 512

UBBPd6 12 1024 1024 12x15 768 768


Board Signaling Specifications (CNBAP/s)

UBBPd1, UBBPd2, UBBPd3, UBBPd4, orUBBPd5

300

UBBPd6 600

NOTE

For combined signaling specifications of the WBBP, see section "Signaling Specifications" in 3900 SeriesBase Station Technical Description.

Specifications of UBBP boards working in LTE FDD mode



122

Table 5-37, Table 5-38, Table 5-39, and Table 5-40 list the specifications of cells, the maximumnumber of UEs in RRC connected mode, and maximum uplink and downlink throughput, andsignaling specifications supported by UBBP boards working in LTE FDD mode, respectively.

Table 5-37 Specifications of cells

Board Number of Cells Cell Bandwidth AntennaConfiguration

UBBPd3 3 1.4 MHz, 3 MHz, 5MHz, 10 MHz, 15MHz, and 20 MHz

3x20 MHz 1T1R3x20 MHz 1T2R3x20 MHz 2T2R


3x20 MHz 1T1R3x20 MHz 1T2R3x20 MHz 2T2R3x20 MHz 4T4R






Board Cell Bandwidth Maximum Number ofUEs in RRC ConnectedMode

UBBPd3 or UBBPd4 1.4 MHz 300

3 MHz 1080

5 MHz 1800

10 MHz, 15 MHz, and 20MHz

3600

UBBPd5 or UBBPd6 1.4 MHz 600

3 MHz 2160

5 MHz, 10 MHz, 15 MHz,and 20 MHz

3600



123

Table 5-39 Maximum throughput

Board Maximum Throughput

UBBPd3 l Downlink: 450 Mbit/sl Uplink: 225 Mbit/s






UBBPd3 or UBBPd4 100


The maximum number of data radio bearers (DRBs) supported by a UBBP is three times themaximum number of UEs in RRC connected mode.

Specifications of UBBP boards working in LTE TDD mode

Table 5-41, Table 5-42, Table 5-43, and Table 5-44 list the specifications of cells, the maximumnumber of UEs in RRC connected mode, and maximum uplink and downlink throughput, andsignaling specifications supported by UBBP boards working in LTE TDD mode, respectively.

Table 5-41 Specifications of cells

Board Number of Cells Cell Bandwidth AntennaConfiguration

UBBPd4 3 5 MHz, 10 MHz, 15MHz, and 20 MHz

3x20 MHz 2T2R3x20 MHz 4T4R

UBBPd6 6 5 MHz, 10 MHz, 15MHz, and 20 MHz


UBBPd9 3 10M/20M 3x20M 8T8R



124


Board Cell Bandwidth Maximum number of UEsin RRC connected mode

UBBPd4, UBBPd6, orUBBPd9

5 MHz 1800

10 MHz 3600

15 MHz

20 MHz

Table 5-43 Maximum throughput







UBBPd4 100


NOTE

The signaling specifications for TDD scenarios are the maximum ones for typical scenarios of normal cells.

The maximum number of data radio bearers (DRBs) supported by a UBBP is three times themaximum number of UEs in RRC connected mode.

NOTE

For the overall signaling specifications of an eNodeB, see section "Signaling Specifications" in 3900 SeriesBase Station Technical Description. For the data radio bearer (DRB) and maximum number of UEs inRRC_CONNECTED mode, see section "Baseband Specifications" in 3900 Series Base Station TechnicalDescription.



125

Panel

The following figure shows the UBBPd1 panel. On the lower left side of the LBBPd1 toUBBPd9, there are silkscreens LBBPd1 to UBBPd9, respectively, identifying their board types.The following figure uses the UBBPd1 as an example.

Figure 5-22 UBBPd1 panel

Function

The UBBP performs the following functions:

l Provides CPRI ports for communication with RF modules.

l Processes uplink and downlink baseband signals.

l Supports the multiplex of baseband resources among different modes, therebyimplementing multimode concurrency.

Working principle

The following figure shows the working principle of the UBBP.

Figure 5-23 Working principles of a UBBP

Port

The following table describes the six CPRI ports and one HEI port on a UBBP.



126

Table 5-45 Ports on a UBBP

Silkscreen Connector Quantity of CPRIPorts

Description


6 They are the datatransmission portsconnecting the BBUto RF modules, andsupport the input andoutput of optical andelectricaltransmission signals.

HEI QSFP connector 1 Reserved

The following table lists the specifications of CPRI ports on the UBBP.

Table 5-46 Specifications of CPRI ports on the UBBP



Topology Type

UBBPd 6 1.25/2.5/4.9/6.144/9.8

Star, chain, and ringtopologies

The following table lists the mapping between the CPRI port rate and the number of TRXssupported by the UBBP working in GSM mode.

Table 5-47 Mapping between the CPRI port rate and the number of TRXs

CPRI Port Rate (Gbit/s) Number of 1T2R TRXs Number of 2T2R or 1T4RTRXs

1.25 24 12

2.5 48 24

4.9 48 24

9.8 48 24

CPRI ports with different rates on the UBBP working in UMTS mode support different numbersof cells, as listed in the following table.



127

Table 5-48 Mapping between the CPRI port rate and the number of cells

CPRI Port Rate (Gbit/s) Number of 1T2R Cells Number of 2T2R Cells

1.25 4 4*a

2.5 8 8*a

4.9 16 16*a

6.144 24 24*a

9.8 32 32*a

a: "*" indicates that if the 2T2R cell supports VAM and the two TX antennas are configuredon two RF modules in two CPRI links for VAM, number of supported cells is reduced byhalf.

CPRI ports with different rates on the UBBP working in LTE FDD mode support differentnumbers of cells, as listed in the following table.

Table 5-49 Mapping between the CPRI port rate and the number of cells in LTE FDD scenarios

CPRI Port Rate (Gbit/s) Number of 4x4 MIMOCells

Number of 2x2 MIMOCells

1.25 4x4 MIMO cells are notrecommended because thetransmission bandwidth ofthe CPRI ports is limited.

l 4 (cell bandwidth ≤ 3MHz)



2.5 1 (cell bandwidth ≤ 10MHz)



l 1 (cell bandwidth = 15MHz or 20 MHz)

4.9 l 2 (cell bandwidth ≤ 10MHz)










128







CPRI ports with different rates on the UBBP working in LTE TDD mode support differentnumbers of cells, as listed in the following table.

Table 5-50 Mapping between the CPRI port rate and the number of cells in LTE TDD scenarios

CPRI PortRate (Gbit/s)

CPRICompressiona

Number of8T8R Cells

Number of4T4R Cells

Number of2T2R Cells

2.5 Not in use N/A l 2 (cellbandwidth =5 MHz)

l 1 (cellbandwidth =10 MHz)

l N/A (cellbandwidth =15 MHz or20 MHz)



l 1 (cellbandwidth =15 MHz or20 MHz)

In use N/A l N/A (cellbandwidth =5 MHz or 15MHz)



l N/A (cellbandwidth =5 MHz or 15MHz)





129


CPRICompressiona

Number of8T8R Cells

Number of4T4R Cells

Number of2T2R Cells

4.9 Not in use l N/A (cellbandwidth =5 MHz)









In use l N/A (cellbandwidth =5 MHz or 15MHz)


















In use l N/A (cellbandwidth =5 MHz/15MHz)



l N/A (cellbandwidth =5 MHz/15MHz)



l N/A (cellbandwidth =5 MHz/15MHz)





130

Indicator

The following table describes the three status indicators on the UBBP panel.

Table 5-51 Indicators on the UBBP panel




Blinking (on for 1s and off for1s)


Blinking (on for 0.125s andoff for 0.125s)


ALM Red Steady on An alarm is generated on theboard.





Steady off l The board does not serve asan active board.


l The board is not providingany services.

Besides the three preceding status indicators, the UBBP provides six indicators indicating thestatus of SFP links and one indicator indicating the status of QSFP link. The six indicators andthe one indicator are above SFP ports and QSFP ports, respectively, as described in the followingtable.

Table 5-52 Indicators for the SFP ports on the LBBP panel


CPRIx Red orgreen

Steady green The CPRI link is functioning properly.



131


Steady red An optical module fails to transmit orreceive signals due to one of thefollowing causes:l The optical module is faulty.l The fiber optic cable is broken.

Blinking red (onfor 0.125s and offfor 0.125s)

The RF module connected to the CPRIlink has a hardware fault.

Blinking red (onfor 1s and off for1s)

The CPRI link is out of lock due to oneof the following causes:l There is no mutual lock between

dual-mode reference clocks.l The CPRI port rates do not match

each other.

Steady off l The optical module cannot bedetected.

l The CPRI electrical cable is notconnected.

Table 5-53 Indicators for the QSFP port on the LBBP panel

Silkscreen Description

HEI Reserved

5.6 WBBPThe WCDMA baseband processing unit (WBBP) can be installed in a BBU3900 to supportUMTS mode.

SpecificationsThe WBBP is classified into four types, as listed in Table 5-54.

NOTE

l The baseband processing board in slot 2 or slot 3 of a BBU3900 could transfer the received CPRI datato other boards.

l There are two CE specifications for the WBBPd1, WBBPd2, WBBPf1, and WBBPf3 as controlled bythe license and parameters.



132

Table 5-54 Specifications of the WBBP

Board Numberof Cells

Numberof ULCEs

Numberof DLCEs

NumberofHSDPACodesa

NumberofHSDPAUEs

NumberofHSUPAUEs

WBBPa 3 128 256 3x15 96 60

WBBPb1 3 64 64 3x15 64 64

WBBPb2 3 128 128 3x15 128 96

WBBPb3 6 256 256 6x15 144 96

WBBPb4 6 384 384 6x15 144 96

WBBPd1 6 64 64 6x15 128 96

192 192

WBBPd2 6 256 256 6x15 144 144

384 384

WBBPd3 6 256 256 6x15 144 96

WBBPf1 6 64 128 6x15 144 144

192 256

WBBPf2 6 256 384 6x15 192 192

WBBPf3 6 256 384 6x15 256 256

384 512

WBBPf4 6 512 768 6x15 384 384

a: The number of HSDPA codes supported by the WBBPd1 is 6x15, in which 6 is the numberof cells and 15 is the number of HSDPA codes supported by each cell.

NOTE

For combined signaling specifications of the WBBP, see section "Signaling Specifications" in 3900 SeriesBase Station Technical Description.

Panel

Figure 5-24 shows the exterior of the WBBPa panel.

Figure 5-25 shows the exterior of the WBBPb1, WBBPb2, WBBPb3, or WBBPb4 panel.

Figure 5-26 shows the exterior of the WBBPd1, WBBPd2, or WBBPd3 panel.

Figure 5-27 shows the exterior of the WBBPf1, WBBPf2, WBBPf3, or WBBPf4 panel.



133

NOTE

l There is no silkscreen for the WBBPa.

l On the WBBPb1, WBBPb2, WBBPb3, and WBBPb4, there are silkscreens WBBPb1, WBBPb2,WBBPb3, and WBBPb4, respectively. Figure 5-25 shows the WBBPb1 panel.

l On the WBBPd1, WBBPd2, and WBBPd3, there are silkscreens WBBPd1, WBBPd2, and WBBPd3,respectively. Figure 5-26 shows the WBBPd1 panel.

l On the WBBPf1, WBBPf2, WBBPf3, and WBBPf4, there are silkscreens WBBPf1, WBBPf2,WBBPf3, and WBBPf4, respectively. Figure 5-27 shows the WBBPf1 panel.

Figure 5-24 Exterior of the WBBPa panel

Figure 5-25 Exterior of the WBBPb panel

Figure 5-26 Exterior of the WBBPd panel

Figure 5-27 Exterior of the WBBPf panel

Functionl The WBBP processes uplink and downlink baseband signals.l The WBBP provides CPRI ports for communication with RF modules.



134

l The WBBPd supports interference cancellation (IC) within the board.l When the CPRI cables connect RF modules carrying corresponding cells to the WBBPd,

the WBBPd installed in slot 2 or 3 supports interference cancellation (IC) of uplink data.l The WBBPf installed in slot 2 or 3 supports the BBU interconnection feature.

Working PrincipleThe following figure shows the working principle of the WBBP.

Figure 5-28 Working principle of the WBBP

PortThe following table describes the six CPRI ports on the WBBPa and WBBPb.

Table 5-55 Ports on the WBBPa and WBBPb

Board Silkscreen Connector Description

WBBPa CPRI0, CPRI1, andCPRI2

SFP femaleconnector

They are the datatransmission portsconnecting the BBUto RF modules, andsupport the input andoutput of optical andelectricaltransmission signals.

WBBPb CPRI0/EIH0,CPRI1/EIH1, andCPRI1/EIH1

Table 5-56 describes the six CPRI ports on the WBBPd.



135

Table 5-56 Ports on the WBBPd


CPRI0, CPRI1,CPRI2, CPRI3/EIH0, CPRI4/EIH1,and CPRI5/EIH2

SFP female connector They are the data transmissionports connecting the BBU to RFmodules, and support the inputand output of optical andelectrical transmission signals.

Table 5-57 describes the six CPRI ports and one HEI port on the WBBPf panel.

Table 5-57 Ports on the WBBPf


CPRI0, CPRI1,CPRI2, CPRI3,CPRI4, and CPRI5

SFP female connector They are the data transmissionports connecting the BBU to RFmodules, and support the inputand output of optical andelectrical transmission signals.

HEI QSFP connector It connects to other basebandprocessing boards to share thebaseband resources.

The following table describes the specifications of the CPRI ports on the WBBP.

Table 5-58 Specifications of CPRI ports on the WBBP



Topology Type

WBBPa 3 1.25 Star, chain, and ringtopologies

WBBPb1/WBBPb2/WBBPb3/WBBPb4

3 1.25/2.5 Star, chain, and ringtopologies

WBBPd 6 1.25 or 2.5 Star, chain, and ringtopologies

WBBPf 6 1.25, 2.5, 4.9, or6.144


CPRI ports with different rates support different numbers of cells, as listed in the following table.



136

Table 5-59 Mapping between the CPRI port rate and the number of cells

CPRI Port Rate (Gbit/s) Number of 1T2R Cells Number of 2T2R Cells

1.25 4 4*a

2.5 8 8*a

4.9 16 16*a

6.144 24 24*a

a: * in the preceding table indicates that the number of 2T2R cells is halved if two TX antennasenabled with the virtual antenna mapping (VAM) function are connected to two RF modulescarried on different CPRI links.

NOTE

In a GU dual-mode base station where the GTMU is connected to port on the WMPT or UMPT throughports on their panels, part of CPRI bandwidth of UMTS mode is reserved for a TX and an RX channel ofGSM mode in case that bandwidths of GSM mode are insufficient. As a result, the number of cells supportedby UMTS mode is reduced.

Indicator

Table 5-60 describes the three status indicators on the WBBP panel.

Table 5-60 Indicators on the WBBP panel







l The board is being loaded orconfigured.








137







The power supply for the boardis insufficient.NOTE

Of all types of WBBP boards, onlythe WBBPf has this status.

Besides the three preceding status indicators, the WBBPa or WBBPb provides three indicatorsindicating the status of SFP links. The three indicators are below the SFP ports. The WBBPd orWBBPf provides six indicators indicating the status of SFP links. The six indicators are abovethe SFP ports. The WBBPf also provides one indicator indicating the status of QSFP links. Thefollowing figure shows the positions of the indicators for ports on the WBBPf panel.

Figure 5-29 Positions of the indicators for ports on the WBBPf panel

The following table describes the indicators for ports on the WBBPf panel.

Table 5-61 Status of the indicators for ports on the WBBPf panel


CPRIx Red or green Steady green The CPRI link is functioning properly.






138




dual-mode reference clock.l The CPRI port rates do not match

each other.l The VSWR alarm is reported on the

RF module connected to the CPRIlink when the USB(1) flash driveconnected to the main control boardis under test.



HEI Red or green Steady green The interconnection link is functioningproperly.



The interconnection link is out of lockdue to one of the following causes:l There is no mutual lock between two

interconnected BBUs.l The QSFP port rates do not match

each other.

Steady off The optical module cannot be detected.

NOTE

(1) The security of the USB loading port on the main control board is ensured by encryption. The USBcommissioning port is used for commissioning a base station rather than exporting configuration data andinformation of the base station.

5.7 LBBPThe LTE baseband process unit (LBBP) can be installed in a BBU3900 to support LTE mode.



139

SpecificationsThe following table lists the types of LBBP.

Table 5-62 Types of LBBP


LBBPc LTE FDDLTE TDD

LBBPd1 LTE FDDLTE TDD



LBBPd4 LTE TDD

NOTE

For the overall signaling specifications of an eNodeB, see section "Signaling Specifications" in 3900 SeriesBase Station Technical Description. For the data radio bearer (DRB) and maximum number of UEs inRRC_CONNECTED mode, see section "Baseband Specifications" in 3900 Series Base Station TechnicalDescription.

Specifications of cells

The following table lists the number of cells, bandwidth, and antenna configurations supportedby a single LBBP in LTE FDD scenarios.

Table 5-63 Specifications of the LBBP in LTE FDD scenarios

Board Number ofCells

Cell Bandwidth Antenna Configuration

LBBPc 3 1.4 MHz, 3 MHz, 5 MHz, 10MHz, 15 MHz, and 20 MHz

3x20 MHz 1T1R3x20 MHz 1T2R3x10 MHz 4T4R3x20 MHz 2T2R1x20 MHz 4T4R

LBBPd1 3 1.4 MHz, 3 MHz, 5 MHz, 10MHz, 15 MHz, and 20 MHz




140







6x20 MHz 2T2Ra

a: When a CPRI fiber optic cable is longer than 40 km (24.85 mi), the LBBPd3 board cannotsupport the 6x20 MHz 2T2R channel.

The following table lists the number of cells, bandwidth, and antenna configurations supportedby a single LBBP in LTE TDD scenarios.

Table 5-64 Specifications of the LBBP in LTE TDD scenarios



LBBPc 3 5 MHz, 10 MHz, or 20 MHz 1x20 MHz (4T4R)3x10M 2T2R3x20 MHz 2T2R3x10 MHz 4T4R

LBBPd1 3 10M/20M 3x20M 2T2R

LBBPd2 3 5 MHz, 10 MHz, 15 MHz, and20 MHz


LBBPd4 3 10 MHz or 20 MHz 3x20 MHz (8T8R)



141

NOTE

l "Antenna Configuration" lists the maximum configurations supported by various types of a basebandprocessing board. For example, the LBBPc supports the maximum configuration of 3x10 MHz 4T4R,and therefore supports any of the following configurations: 3x1.4 MHz 4T4R, 3x3 MHz 4T4R, and3x5 MHz 4T4R.

l As long as the maximum antenna configuration is not exceeded, different cells support different antennaconfigurations. For example, if an LBBPd2 supports the 3x20 MHz 2T2R antenna configuration, thethree cells connected to the LBBPc can use the following antenna configurations: 2T2R, 2T2R, and1T1R.

l Boards with the same antenna configuration support combinations of different bandwidth as long asthe total bandwidth does not exceed the maximum bandwidth supported by the board. For example, ifan LBBPc supports the 3x20 MHz 2T2R antenna configuration, the three cells connected to the LBBPccan use any of the following antenna configurations: 1.4 MHz 2T2R, 3 MHz 2T2R, 5 MHz 2T2R, 10MHz 2T2R, 15 MHz 2T2R, and 20 MHz 2T2R.

l The LBBP supports CPRI convergence when the site is configured with any of the following RFmodules: RRU3221, RRU3240, RRU3828, RRU3829, RRU3928, RRU3929, LRFUe, MRFUd,RRU3229, RRU3841, RRU3942, RRU3642, RRU3832, RRU3838, and RRU3268. The CPRIconvergence of the LBBP must comply with the following principles:

l In LBBPc+LBBPc CPRI convergence mode, the CPRI convergence is allowed only between twoLBBPc boards, and one LBBPc board must be configured in slot 2 or 3.

l In LBBPc+LBBPc CPRI convergence mode, the CPRI convergence is allowed only from multipleLBBPc boards to one LBBPd board, and only the CPRI ports on the LBBPd in slot 2 or 3 canconnect to RF units.

l in LTE TDD scenarios, the LBBPc cannot serve as a converging board and only can be a convergedboard.

Signaling specifications

The following table lists the signaling specifications of the LBBP.

Table 5-65 Signaling specifications of the LBBP


LBBPc 60

LBBPd4, LBBPd1, or LBBPd2 80

LBBPd3 100

NOTE

The signaling specifications for TDD scenarios are the maximum ones for typical scenarios of normal cells.

Maximum number of UEs in RRC connected mode

The following table lists the maximum number of UEs in RRC connected mode supported bythe LBBP board in LTE FDD scenarios.



142


Board Cell Bandwidth Maximum Number of UEs inRRC Connected Mode

LBBPc 1.4 MHz 1008

3 MHz 1800

5 MHz 1800

10 MHz 1800

15 MHz 1800 (in 2R mode) or 1200 (in 4Rmode)

20 MHz 1800 (in 2R mode) or 1200 (in 4Rmode)

LBBPd1 or LBBPd2 1.4 MHz 300

3 MHz 1080

5 MHz 1800

10 MHz 3600

15 MHz 3600

20 MHz 3600

LBBPd3 1.4 MHz 600

3 MHz 2160

5 MHz 3600

10 MHz 3600

The following table lists the maximum number of UEs in RRC connected mode supported bythe LBBP board in LTE TDD scenarios.

Table 5-67 Maximum Number of UEs in RRC connected mode


LBBPc 5MHz 1800

10MHz 1800

20MHz 1800(2R)/1200(4R)

LBBPd1 10MHz 3600



143


20MHz 3600

LBBPd2 5 MHz 1800

10 MHz 3600

15 MHz 3600

20 MHz 3600

LBBPd4 10 MHz 3600

20 MHz 3600

Maximum number of DRBs

The maximum number of data radio bearers (DRBs) supported by an LBBP is three times themaximum number of UEs in RRC connected mode.

Maximum throughput

The following table lists the maximum throughput of the LBBP.

Table 5-68 Maximum throughput of the LBBP


LBBPc l Downlink: 300 Mbit/sl Uplink: 100 Mbit/s

LBBPd1 l Downlink: 450 Mbit/sl Uplink: 225 Mbit/s


LBBPd3 l Downlink: 600 Mbit/sl Uplink: 300 Mbit/sLTE TDD:l Downlink: 600 Mbit/sl Uplink: 225 Mbit/s




144

NOTE

The maximum throughput listed in the preceding table is the hardware capacities supported by the LBBPcand LBBPd boards in LTE TDD scenarios. The actual uplink and downlink peak throughput depends onuplink-downlink subframe configurations.

PanelFigure 5-30 and Figure 5-31 show two types of LBBP.

NOTE

The LBBPd1, LBBPd2, LBBPd3, and LBBPd4 have silkscreens LBBPd1, LBBPd2, LBBPd3, andLBBPd4 indicating their board types on the lower left side, respectively.

Figure 5-30 LBBPc panel

Figure 5-31 LBBPd panel

FunctionThe LBBP performs the following functions:l Provides CPRI ports for communication between the BBU and RF modules.l Processes uplink and downlink baseband signals.

Working PrincipleThe following figure shows the working principle of the LBBP.



145

Figure 5-32 Working principle of the LBBP

Port

The following table describes the six CPRI ports on the LBBP.

Table 5-69 Ports on the LBBP


Description


6 They are the datatransmission portsconnecting the BBUto RF modules, andsupport the input andoutput of optical andelectricaltransmission signals.

The following table lists the specifications of CPRI ports on the LBBP.

Table 5-70 Specifications of CPRI ports on the LBBP



Topology Type

LBBPc 6 1.25/2.5/4.9 Star, chain, and ringtopologies

LBBPd 6 1.25/2.5/4.9/6.144/9.8




146

CPRI ports with different data rates support different numbers of cells. Table 5-71 and Table5-72 list the mapping between the CPRI port rate and the number of cells in LTE FDD and LTETDD scenarios.

Table 5-71 Mapping between the CPRI port rate and the number of cells in LTE FDD scenarios



1.25 4x4 MIMO cells are notrecommended because thetransmission bandwidth ofthe CPRI ports is limited.




2.5 1 (cell bandwidth ≤ 10MHz)


















147

Table 5-72 Mapping between the CPRI port rate and the number of cells in LTE TDD scenarios


CPRICompressiona

Number of8T8R Cells

Number of4T4R Cells

Number of2T2R Cells

2.5 Not in use N/A l 2 (cellbandwidth =5 MHz)






In use N/A l N/A (cellbandwidth =5 MHz or 15MHz)















In use l N/A (cellbandwidth =5 MHz or 15MHz)











148


CPRICompressiona

Number of8T8R Cells

Number of4T4R Cells

Number of2T2R Cells










In use withoutturning on theCPRI extensionswitch










In use with theCPRI extensionswitch beingturned on










a:l N/A (cell bandwidth = 5 MHz or 15 MHz)l The LBBPc does not support CPRI compression.l Setting the CPRI extension switch to on affects the carrier specifications supported by the

9.8 Gbit/s LBBPd only in CPRI compression. For details about the CPRI extension switch,see the CPRIEX switch in the MOD BBP or LST BBP command. An LBBPd can onlyuse CPRI ports 0, 1, and 2 when the CPRI extension switch is set to on.



149

NOTE

The preceding table lists the maximum numbers of cells and antennas supported by each CPRI link witha corresponding CPRI port rate. In combined RF module scenarios, the CPRI port rate is determined bythe actual numbers of cells and antennas carried by each CPRI link.

The following table describes the one QSFP port on the LBBPd.

Table 5-73 QSFP port on the LBBPd


Description

HEI QSFP connector 1 Reserved

IndicatorThe following table describes the three indicators on the LBBP.

Table 5-74 Indicators on the LBBP
















150






The power supply for the boardis insufficient.NOTE

Of all types of LBBP boards, onlythe LBBPd has this status.

Besides the three preceding status indicators, the LBBP provides six indicators indicating thestatus of SFP links and one indicator indicating the status of QSFP link. The six indicators andthe one indicator are above the SFP ports and QSFP port, respectively, as shown in the followingfigure.

Figure 5-33 Positions of the indicators for ports on the LBBP panel

The Table 5-75 and Table 5-76 describe the indicators for ports.

Table 5-75 Indicators for the SFP ports on the LBBP panel


CPRIx Red orgreen

Steady green The CPRI link is functioning properly.






151




dual-mode reference clocks.l The CPRI port rates do not match

each other.



Table 5-76 Indicators for the QSFP port on the LBBP panel

Silkscreen Description

HEI Reserved

5.8 FANThe FAN is a fan module in a BBU3900. The FAN or FANc can only be installed in a BBU3900and the FANd can only be installed in a BBU3910.

PanelFigure 5-34, Figure 5-35, and Figure 5-36 show the exteriors of FAN modules.

NOTE

l The FAN panel has no silkscreen.

l The FANc panel has a FANc silkscreen.

l The FANd panel has a FANd silkscreen.



152

Figure 5-34 FAN panel

Figure 5-35 FANc panel



153

Figure 5-36 FANd panel

Function

The FAN performs the following functions:

l It dissipates heat from other boards in the BBU.

l It controls the speed of fans, monitors the temperature of fans, and reports the status,temperature and in-position signals of fans.

l The FANc provides a read-write electronic label.

Indicator

There is only one indicator on the FAN panel, which indicates the operating status of the fans.Table 5-77 describes the indicator.

Table 5-77 Indicator on the FAN panel


STATE Red or green Blinking green (onfor 0.125s and off for0.125s)

The module is notregistered, and noalarm is reported.


The module isrunning properly.


The module isreporting alarms.

Steady off There is no powersupply.



154

5.9 UPEUThe universal power and environment interface unit (UPEU) is a power module in a BBU3900or BBU3910. The UPEUd can be installed in a BBU3900 or BBU3910, but other types of UPEUcan only be installed in a BBU3900.

SpecificationsThe following table lists the specifications of the UPEUa, UPEUc, and UPEUd.

Table 5-78 Specifications of the UPEU

Board Output Power Backup Mode

UPEUa The output power of aUPEUa is 300 W.

1+1 backup

UPEUc The output power of aUPEUc board is 360 W, andthe output power of twoUPEUc boards is 650 W.

In 1+1 backup mode, theoutput power of two UPEUcboards is 360 W.

UPEUd The output power of aUPEUd is 650 W.

1+1 backup

NOTE

A BBU cannot house two UPEUs of different types. When the power required by the BBU exceeds thepower specification of the BBU:

l If the BBU has been configured with one or two UPEUa boards, replace the boards with two UPEUcboards.

l If the BBU has been configured with one UPEUc board, add a second UPEUc board.

PanelFigure 5-37, Figure 5-38, Figure 5-39, and Figure 5-40 show the four types of the UPEU.

NOTE

The UPEUc and UPEUd have silkscreens UPEUc and UPEUd indicating their board types on them,respectively, whereas the UPEUa and UPEUb do not have such silkscreens indicating their board types.The UPEUa and UPEUb, however, can be distinguished by the silkscreens -48V and +24V on them.



155

Figure 5-37 UPEUa panel

(1) BBU power switch (2) 7W2 connector

Figure 5-38 UPEUb panel

(1) BBU power switch (2) 7W2 connector

Figure 5-39 UPEUc panel

(1) BBU power switch (2) 3V3 connector



156

Figure 5-40 UPEUd panel

(1) BBU power switch (2) 3V3 connector

Function

The UPEU performs the following functions:

l The UPEUa, UPEUc, and UPEUd convert the -48 V DC input power into +12 V DC power.

l The UPEUb converts the +24 V DC input power into +12 V DC power.

l The UPEU provides two ports with each transmitting one channel of RS485 signals andtwo ports with each transmitting four channels of Boolean signals. The Boolean signalscan only be dry contact or open collector (OC) signals.

Working Principle

The following figure shows the working principle of the UPEU.

Figure 5-41 Working principle of the UPEU

Port

The UPEU provides two ports with each transmitting one channel of RS485 signals and twoports with each transmitting four channels of Boolean signals. The following figure shows theslots for installing the UPEU in the BBU.



157

Figure 5-42 Slots for installing the UPEU

The following table describes the ports on the UPEU panel.

Table 5-79 Ports on the UPEU panel

Slot Silkscreen Connector Description

Slot 19 +24V or-48V

3V3 or 7W2connector

Feeding +24 V or -48 V DC power

EXT-ALM0 RJ45connector

Ports for Boolean signal inputs 0 to 3



MON0 RJ45connector

Port for RS485 signal input 0

MON1 RJ45connector


Slot 18 +24V or-48V

3V3 or 7W2connector

Feeding +24 V or -48 V DC power





MON0 RJ45connector


MON1 RJ45connector


IndicatorThe UPEU has one indicator, which indicates the operating status of the UPEU. The followingtable describes the indicator.



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Table 5-80 Indicator on the UPEU panel


RUN Green Steady on The board is runningproperly.


5.10 UEIUThe universal environment interface unit (UEIU) is a environment monitoring unit in a BBU3900or BBU3910.

Panel

The following figure shows the UEIU panel.

Figure 5-43 UEIU panel

Function

The UEIU performs the following functions:

l Provides two ports with each transmitting one channel of RS485 signals and two ports witheach transmitting four channels of Boolean signals. The Boolean signals can only be drycontact or OC signals.

l Reports monitoring and alarm signals from other devices in the cabinet to the main controlboard.

Working Principle

The following figure shows the working principle of the UEIU.



159

Figure 5-44 Working principle of the UEIU

PortThe following table describes the ports on the UEIU panel.

Table 5-81 Ports on the UEIU panel

Silkscreen

Connector

Quantity ofCPRIPorts

Description

EXT-ALM0

RJ45connector

1 Ports for Boolean signal inputs 0 to 3

EXT-ALM1

RJ45connector

1 Ports for Boolean signal inputs 4 to 7

MON0 RJ45connector

1 Port for RS485 signal input 0

MON1 RJ45connector

1 Port for RS485 signal input 1

5.11 UTRPThe universal transmission processing unit (UTRP) is an extension transmission. The UTRPccan be installed in a BBU3900 or BBU3910 and other types of UTRP boards can only be installedin a BBU3900.

SpecificationsThe following table lists the specifications of the UTRP.



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Table 5-82 Specifications of the UTRP

Board Sub-board/BoardType

Applicable Mode

TransmissionMode

Quantityof Ports

PortCapacity

Full/Half-Duplex

UTRP2 UEOC UMTS Transmission overFE/GEopticalports

2 10 Mbit/s,100 Mbit/s, or 1000Mbit/s

Full-duplex

UTRP3 UAEC UMTS ATM overE1/T1

2 Eightchannels

Full-duplex

UTRP4 UIEC UMTS IP over E1/T1

2 Eightchannels

Full-duplex

UTRPb4 Without asub-board

GSM TDM overE1/T1

2 Eightchannels

Full-duplex

UTRP6 UUAS UMTS STM-1/OC-3

1 Onechannel

Full-duplex

UTRP9 UQEC UMTS Transmission overFE/GEelectricalports


Full-duplex

UTRPa Without asub-board

UMTS ATM overE1/T1 orIP over E1/T1

2 Eightchannels

Full-duplex

UTRPc Without asub-board

GSMUMTS

Transmission overFE/GEelectricalports


Full-duplex

Transmission overFE/GEopticalports

2 100 Mbit/sor 1000Mbit/s

Full-duplex

NOTE

l The UTRPc in GSM mode can be configured together only with the GTMUb, not the GTMU.

l For signaling specifications of the UTRP in UMTS mode, see section "Signaling Specifications" in3900 Series Base Station Technical Description.



161

Panel

The following figure shows the UTRP2 panel.

Figure 5-45 UTRP2 panel (with two optical ports)

The following figure shows the UTRP3 or UTRP4 panel.

Figure 5-46 UTRP3 or UTRP4 panel (supporting eight channels of E1/T1 signals)

The following figure shows the UTRPb4 panel in GSM mode.

Figure 5-47 UTRPb4 panel (supporting eight channels of E1/T1 signals)


Figure 5-48 UTRP6 panel (supporting one channel of STM-1 signals)




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Figure 5-49 UTRP9 panel (with four electrical ports)

The following figure shows the UTRPa panel.

Figure 5-50 UTRPa panel (supporting eight channels of E1/T1 signals)

The following figure shows the UTRPc panel.

Figure 5-51 UTRPc panel (with four electrical ports and two optical ports)

FunctionThe UTRP performs the following functions:l Provides E1/T1 transmission port over ATM, TDM or IP.l Provides electrical and optical transmission ports.l Supports cold backup.

Working PrincipleThe following figure shows the working principle of the UTRP.

Figure 5-52 Working principle of the UTRP



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PortThe following table describes the ports on the UTRP panel.

Table 5-83 Ports on the UTRP

Board Silkscreen Connector Description

UTRP2 FE/GE0 and FE/GE1 SFP femaleconnector

FE/GE optical signaltransmission port

UTRP3, UTRP4,UTRPb4, or UTRPa


E1/T1 signaltransmission port

UTRP6 STM-1/OC-3 SFP femaleconnector

STM-1/OC-3 signaltransmission port

UTRP9 FE/GE0 to FE/GE3 RJ45 connector FE/GE electricalsignal transmissionport

UTRPc FE/GE0 and FE/GE1 SFP femaleconnector

FE/GE optical signaltransmission port

FE/GE2 to FE/GE5 RJ45 connector FE/GE electricalsignal transmissionport

IndicatorThe following table describes the three status indicators on the UTRP panel.

Table 5-84 Indicators on the UTRP panel








164













The ACT indicator on the UTRP in GSM mode has different status from the ACT indicator onother boards, as listed in the following table.



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Table 5-85 Status of the ACT indicator on the UTRP in GSM mode


ACT Green Steady on l Before theconfigurationtakes effect, noneor more than oneE1 port in GSMmode arefunctional.

l Theconfiguration hastaken effect.


Before theconfiguration takeseffect, only one E1port in GSM mode isfunctional.

Besides the preceding three indicators, the UTRP2, UTRP9, or UTRPc provides indicatorsindicating the status of links connected to the FE/GE electrical port and FE/GE optical port. Thefollowing table describes the indicators for ports.

Table 5-86 Status of the indicators for ports


LINK Green Steady on The link is runningproperly.

Steady off The link is notconnected.

ACT Orange Blinking Data is beingtransmitted orreceived on the link.

Steady off No data is beingtransmitted orreceived on the link.

Besides the preceding three indicators, the UTRPa provides four indicators indicating the statusof links connected to the E1/T1 ports. The following table describes the indicators for ports.



166



Lxy (L01, L23, L45,and L67)

Red or green Steady off E1/T1 links x and yare not set up, or anLOS alarm isgenerated.

Steady green E1/T1 links x and yare workingproperly.


E1/T1 link x isworking properly,but E1/T1 link y isnot set up or an LOSalarm is generated.


E1/T1 link y isworking properly,but E1/T1 link x isnot set up or an LOSalarm is generated.

Steady red Alarms are generatedon E1/T1 links x andy.


An alarm isgenerated on E1/T1link x.


An alarm isgenerated on E1/T1link y.

The UTRPc also provides three indicators indicating the working mode of the board, as describedin the following table.

NOTE

If more than one of the indicators (R0, R1, and R2) are steady green at the same time, the board is workingin multimode.

Table 5-88 Indicators on the UTRPc


R0 Red or green Steady off The board is notworking in GSMmode.



167


Steady green The board is workingin GSM mode.

Steady red Reserved

R1 Red or green Steady off The board is notworking in UMTSmode.

Steady green The board is workingin UMTS mode.

Steady red Reserved

R2 Red or green Steady off The board is notworking in LTEmode.

Steady green The board is workingin LTE mode.

Steady red Reserved

DIP SwitchThere are three DIP switches on the UTRP3, UTRP4, or UTRPb4. There are two DIP switcheson the UTRPa. Figure 5-53 shows the DIP switches on the UTRP3 and UTRP4. Figure 5-54shows the DIP switches on the UTRPb4. Figure 5-55 shows the DIP switches on the UTRPa.

Figure 5-53 DIP switches on the UTRP3 and UTRP4



168

Figure 5-54 DIP switches on the UTRPb4

Figure 5-55 DIP switches on the UTRPa

The DIP switches perform the following functions:

l SW1 and SW2 are used to set whether to ground the receiver end of the E1 signals.

l SW3 is used to set the resistance of the E1 signal cables.

Each DIP switch has four bits. Table 5-89, Table 5-90, and Table 5-91 describes the settingsand meanings of the DIP switches.


DIPSwitch


1 2 3 4






169


DIPSwitch


1 2 3 4




NOTICESW1 and SW2 are set to OFF by default. SW1 corresponds to No.4 to No.7 channels of E1signals. SW2 corresponds to No.0 to No.3 channels of E1 signals.


DIPSwitch


1 2 3 4

SW3 OFF OFF ON ON T1

ON ON OFF OFF The E1resistance isset to 120ohms.

ON ON ON ON The E1resistance isset to 75ohms.


5.12 USCUThe universal satellite card and clock unit (USCU) can be installed in a BBU3900 or BBU3910.

Specifications

The following table describes specifications of the three types of the USCU.



170

Table 5-92 Specifications of the USCU

Board Working Mode Supported Satellite Card

USCUb11 LTE None

USCUb14 GSMUMTSLTE

UBLOX single-satellite card

USCUb22 GSMUMTSLTE

Naviors dual-satellite card

Panel

The USCU has two types of exteriors, which are shown in Figure 5-56 and Figure 5-57.

NOTE

The USCUb11 and USCUb14 have silkscreens USCUb11 and USCUb14 indicating their board types onthe lower left side, respectively.

Figure 5-56 USCUb11 or USCUb14 panel

Figure 5-57 USCUb22 panel

Function

The USCU performs the following functions:

l The USCUb11 provides ports for communicating with the RGPS (for example, the RGPSon the reused customer equipment) and BITS equipment. It does not support GPS signals.

l The USCUb14 does not support RGPS signals. It contains a UBLOX satellite card.



171

l The USCUb22 does not support RGPS signals. It uses a Naviors satellite card, which mustbe purchased locally and installed onsite.

Working Principle

The following figure shows the working principle of the USCU.

Figure 5-58 Working principle of the USCU

Port

The following table describes the ports on the USCU panel.

Table 5-93 Ports on the USCU panel


GPS SMA connector The GPS ports on the USCUb14 and USCUb22 areused for receiving GPS signals.The GPS port on the USCUb11 is reserved, and itcannot receive GPS signals.

RGPS PCB weldedwiring terminal

The RGPS port on the USCUb11 is used forreceiving RGPS signals.The RGPS ports on the USCUb14 and USCUb22 arereserved, and they cannot receive RGPS signals.

TOD0 RJ45 connector Receives or transmits 1PPS+TOD signals.

TOD1 RJ45 connector Receives or transmits 1PPS+TOD signals, andreceives TOD signals from the M1000.

BITS SMA connector Receives BITS clock signals, and supports adaptiveinput of 2.048 MHz and 10 MHz reference clock.

M-1PPS SMA connector Receives 1PPS signals from the M1000.

Indicator

The following table describes the three indicators on the USCU panel.



172

Table 5-94 Indicators on the USCU panel

















Besides the preceding three indicators, the USCU provides two indicators indicating the statusof the TOD links. The following table describes the indicators.



173

Table 5-95 Indicators for the TOD ports

Indicator Color Status Description

TOD0/TOD1 Green (on the left) The green indicator issteady on and theorange indicator issteady off.

The TOD port isconfigured as an inputport.

Orange (on theright)

The orange indicatoris steady on and thegreen indicator issteady off.

The TOD port isconfigured as anoutput port.

5.13 UBRIThe universal baseband radio interface unit (UBRI) can only be installed in a BBU3900.However, the universal baseband radio interface board type b (UBRIb) can be installed in aBBU3900 or BBU3910.

SpecificationsThe following table lists the specifications of the UBRI and UBRIb.

Table 5-96 Specifications of the UBRI and UBRIb


UBRI GSM

UBRIb l GSMl The board is required in a co-MPT base

station whose supported modes includeGSM mode.

PanelFigure 5-59 and Figure 5-60 show the exteriors of the UBRI and UBRIb, respectively.

Figure 5-59 Exterior of the UBRI panel



174

Figure 5-60 Exterior of the UBRIb panel

FunctionThe UBRI or UBRIb performs the following functions:l The UBRI or UBRIb provides extended CPRI optical or electrical ports.l When the UBRI or UBRIb is working in GSM mode, the RF module processes baseband

signals.l The UBRIb receives CPRI signals in single-mode or multimode base stations.l The UBRIb only supports single mode in separate-MPT base stations.

Working PrincipleThe following figure shows the working principle of the UBRI or UBRIb.

Figure 5-61 Working principle of the UBRI or UBRIb

PortThe following table describes the ports on the UBRI or UBRIb.

Table 5-97 Ports on the UBRI or UBRIb


CPRI0 to CPRI5 SFP female connector Connects the BBU and RFmodules.



175

The following table lists the specifications of the CPRI ports on the UBRI and UBRIb.

Table 5-98 Specifications of the CPRI ports on the UBRI and UBRIb



Topology Type

UBRI 6 1.25 or 2.5 Star, chain, and ringtopologies

UBRIb 6 1.25, 2.5, 4.9, 6.144,or 9.8


IndicatorThe following table describes the three status indicators on the UBRI panel.

Table 5-99 Indicators on the UBRI panel








ALM Red Steady on An alarm is generated on theboard.










176

The following table describes the three status indicators on the UBRIb panel.

Table 5-100 Indicators on the UBRIb panel




On for 1s and off for 1s The board is running properly.

On for 0.125s and off for0.125s





On for 1s and off for 1s An alarm is generated, and youneed to locate the fault beforedetermining whether to replacethe board.





On for 1s and off for 1s The power supply for the boardis insufficient.

Besides the preceding three indicators, the UBRI or UBRIb provides six indicators indicatingthe status of the CPRI links, and the six indicators are above the SFP ports. The following tabledescribes the indicators for CPRI links on the UBRI or UBRIb panel.



TX RX Red or green Steady green The CPRI link isfunctioning properly.



177




cable is broken.


The CPRI link is outof lock due to one ofthe following causes:l There is no mutual

lock between dual-mode referenceclock.

l The CPRI portrates do not matcheach other.

Steady off l The opticalmodule cannot bedetected.

l The CPRIelectrical cable isnot connected.

5.14 UCIUThe universal inter-connection infrastructure unit (UCIU) can be installed in a BBU3900.

Panel

The following figure shows the UCIU panel.

Figure 5-62 UCIU panel



178

Function

The UCIU performs the following functions:

l Supports single-mode or multimode configuration and management. When in multimode,it is shared by multiple modes and can be configured and managed by any mode.

l Interconnects BBUs, and forwards control and synchronization information from one BBUto another.

l Supports co-site of a 3900 series base station and a 3012 series base station.

Working Principle

The following figure shows the working principle of the UCIC.

Figure 5-63 Working principle of the UCIC

Port

The following table describes the ports on the UCIU.

Table 5-102 Ports on the UCIU


M0 to M4 SFP femaleconnector

Primary inter-BBU ports, which connect to thesecondary inter-BBU ports.

S0 SFP femaleconnector

Secondary inter-BBU port, which connects to theprimary inter-BBU port.

GCK DB15 connector Provides reference clock when the base station iscombined with a 3012 series base station.

Indicator

The following table describes the three indicators on the UCIU.



179

Table 5-103 Indicators on the UCIU




On for 1s and off for1s


On for 0.125s and offfor 0.125s





On for 1s and off for1s






Besides the preceding three indicators, the UCIU provides other six indicators for the M0 to M4ports and the S0 port. The following table describes the indicators for ports.

Table 5-104 Indicators on the UCIU panel


TX RX Red or green Steady green The interconnection link isfunctioning properly.

Steady red The optical module fails totransmit or receive signals, orthe fiber optic cable is faulty.



180



The incorrect cable connectionsand corresponding indicatorstatus are as follows:l The S0 port on the UCIU in

one BBU connects to the CIport on UMPT in the otherBBU, and indicators for allincorrectly connected portsare blinking.

l The ports are connected inring topology, and indicatorsfor all incorrectly connectedports are blinking.

Steady off The optical module cannot bedetected.

5.15 Optical ModulesAn optical module transmits optical signals between an optical port and a fiber optic cable.

NOTE

The exteriors of an optical module and the label on an optical module in this section are for reference only.The actual exteriors may be different.

ExteriorThe following figure shows the exterior of an optical module.

Figure 5-64 Exterior of an optical module

Label on an optical moduleThere is a label on each optical module, which provides information such as the rate, wavelength,and transmission mode, as shown in the following figure.



181

Figure 5-65 Label on an optical module

(1) Rate (2) Wavelength (3) Transmission mode

Optical Module TypeOptical modules can be divided into single- and multimode optical modules, which can bedistinguished as follows:l The puller of a single-mode optical module is blue and the puller of a multimode optical

module is black or gray.l The transmission mode is displayed as "SM" on the label of a single-mode optical module

and "MM" on the label of a multimode optical module.



182

6 BBU Engineering Specifications

This section describes the engineering specifications of the BBU, including the powerspecifications, size, weight, heat dissipation capability, environmental specifications, and surgeprotection specifications.

Input Power SpecificationsThe following table lists the input power specifications of the BBU.

Table 6-1 Input power specifications of the BBU

Type Input Power Voltage Range

BBU3900(UPEUc)

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

BBU3910(UPEUd)

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

Equipment SpecificationsThe BBU3900 and BBU3910 have the same size and weight, as provided in the following table.

Table 6-2 Size and weight of the BBU

Item Specifications

Dimensions (H x Wx D)

86 mm x 442 mm x 310 mm

Weight l ≤ 12 kg (full configuration)

l ≤ 7 kg (typical configuration)

BBU3900Hardware Description 6 BBU Engineering Specifications


183

Heat Dissipation CapabilityThe following table lists the heat dissipation capability of the BBU.

Table 6-3 Heat dissipation capability of the BBU

Type Configuration Specifications

BBU3900 FAN 350 W

FANc 650 W

BBU3910 FANd 650 W

Environment SpecificationsThe BBU3900 and BBU3910 have the same environment specifications, as provided in thefollowing table

Table 6-4 Environment specifications of the BBU

Item Specifications

Operatingtemperature

l Long term: -20ºC to +55ºCl Short term: +55ºC to +60ºC

Relative humidity 5% RH to 95% RH

Protection level IP20

AtmosphericPressure

70 kPa to 106 kPa

Surge Protection SpecificationsThe BBU3900 and BBU3910 have the same surge protection specifications, as provided inTable 6-5.

NOTE

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

l All the surge current items, unless otherwise specified as Maximum discharge current, refer to Nominaldischarge current.



184

Table 6-5 Surge protection specifications of the ports on the BBU

Port UsageScenario

SurgeProtectionMode

Specification

-48 V DCport

Applicable tothe scenariowhere the BBUand devicesinterconnectedthrough thisport areinstalledindoors

Differential mode 1 kA

Common mode 2 kA

FE/GEport

Applicable tothe scenariowhere the BBUand devicesinterconnectedthrough thisport areinstalledindoors (surge)

Differential mode 0.5 kV (1.2/50 μs)

Common mode 4 kV (1.2/50 μs)

Applicable tothe scenariowhere somedevices areconfiguredremotely or thescenario wherethe BBU anddevicesinterconnectedthrough thisport are placedoutdoors(surgeprotectorconfigured)


Common mode 5 kA

GPS port Applicable tothe scenariowhere somedevices areconfiguredremotely or thescenario wherethe BBU anddevices




185

Port UsageScenario

SurgeProtectionMode

Specification

interconnectedthrough thisport are placedoutdoors(surgeprotectorconfigured)

Common mode 40 kA

RGPS port Applicable tothe scenariowhere somedevices areconfiguredremotely or thescenario wherethe BBU anddevicesinterconnectedthrough thisport are placedoutdoors(surgeprotectionmoduleconfigured)


Common mode 5 kA

E1/T1 port Applicable tothe scenariowhere the BBUand devicesinterconnectedthrough thisport areinstalledindoors

Differential mode 250 A

Common mode 250 A

Applicable tothe scenariowhere somedevices are




186

Port UsageScenario

SurgeProtectionMode

Specification

configuredremotely or thescenario wherethe BBU anddevicesinterconnectedthrough thisport are placedoutdoors(surgeprotectionboardconfigured)

Common mode 5 kA

Drycontact

Applicable tothe scenariowhere the BBUand devicesinterconnectedthrough thisdry contact areinstalledindoors


Applicable tothe scenariowhere somedevices areconfiguredremotely or thescenario wherethe BBU anddevicesinterconnectedthrough thisport are placedoutdoors(surgeprotectionboardconfigured)


Common mode 5 kA

RS485alarm port

Applicable tothe scenariowhere the BBU




187

Port UsageScenario

SurgeProtectionMode

Specification

and devicesinterconnectedthrough thisport areinstalledindoors

Common mode 250 A

Applicable tothe scenariowhere somedevices areconfiguredremotely or thescenario wherethe BBU anddevicesinterconnectedthrough thisport are placedoutdoors(surgeprotectionboardconfigured)


Common mode 5 kA



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