BTS3900 (Ver.C) Hardware Description(04)(PDF)-En

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BTS3900 (Ver.C)

Hardware Description

Issue 04

Date 2012-01-10

HUAWEI TECHNOLOGIES CO., LTD.


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Copyright Huawei Technologies Co., Ltd. 2012. All rights reserved.

No part of this document may be reproduced or transmitted in any form or by any means without prior written

consent 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.

Notice

The purchased products, services and features are stipulated by the contract made between Huawei and the

customer. All or part of the products, services and features described in this document may not be within the

purchase 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 representations

of any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in the

preparation of this document to ensure accuracy of the contents, but all statements, information, and

recommendations in this document do not constitute the warranty of any kind, express or implied.

Huawei Technologies Co., Ltd.

Address: Huawei Industrial Base

Bantian, Longgang

Shenzhen 518129

People's Republic of China

Website: http://www.huawei.com

Email: [email protected]

Issue 04 (2012-01-10) Huawei Proprietary and Confidential

Copyright Huawei Technologies Co., Ltd.

i
http://www.huawei.com/


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About This Document

PurposeThis document serves as a reference for planning and deploying the BTS3900 (Ver.C) (referred

to as BTS3900) cabinet. It describes the functions of boards, modules, and ports, and the details

such as port types, cable types, cable connections, and connector specifications.

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

Product Name Product Version

BTS3900L (Ver.C) V100R003C00

BTS3900L (Ver.C) GSM V100R009C00

V100R012C00

BTS3900L (Ver.C) WCDMA V200R012C00

Intended AudienceThis document is intended for:

l System engineers

l Base station installation engineersl Site maintenance engineers

Organization1 Changes in the BTS3900 (Ver.C) Hardware Description

This section describes the changes in theBTS3900 (Ver.C) Hardware Description.

2 Exterior of the BTS3900 Cabinet

The BTS3900 cabinet is a vertical cabinet, which is designed in compliance with the IEC297standard.

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3 BTS3900 Hardware Configurations

This chapter describes configurations of the BTS3900 cabinet, power configurations, and

monitoring configurations. It serves as a reference for planning and deploying the BTS3900.

4 BTS3900 Components

BTS3900 components consist of the BBU3900, RFUs, DCDU-11A, fan box, power equipment

(AC/DC), and optional modules. The power equipment (AC/DC) is configured only in the

BTS3900 cabinet (220 V AC).

5 BTS3900 Cables

This chapter describes the BTS3900 cables. The BTS3900 cables consist of the PGND cable,

power cable, transmission cable, CPRI cable, signal cable, and RF cable.

6 BTS3900 Auxiliary Equipment

Auxiliary equipment can be installed in the BTS3900 if required.

Conventions

Symbol Conventions

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

Symbol Description

Indicates a hazard with a high level of risk, which if not

avoided, will result in death or serious injury.

Indicates a hazard with a medium or low level of risk, which

if not avoided, could result in minor or moderate injury.

Indicates a potentially hazardous situation, which if not

avoided, could result in equipment damage, data loss,

performance degradation, or unexpected results.

Indicates a tip that may help you solve a problem or save

time.

Provides additional information to emphasize or supplement

important points of the main text.

General Conventions

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

Convention Description

Times New Roman Normal paragraphs are in Times New Roman.

Boldface Names of files, directories, folders, and users are in

boldface. For example, log in as user root.

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Italic Book titles are in italics.

Courier New Examples of information displayed on the screen are in

Courier 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 by

vertical bars. One item is selected.

[ x | y | ... ] Optional items are grouped in brackets and separated by

vertical bars. One item is selected or no item is selected.

{ x | y | ... }* Optional items are grouped in braces and separated by

vertical bars. A minimum of one item or a maximum of all

items can be selected.

[ x | y | ... ]* Optional items are grouped in brackets and separated by

vertical 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 titles

are in boldface. For example, click OK.

> Multi-level menus are in boldfaceand 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.

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Format Description

Key Press the key. For example, press Enterand press Tab.

Key 1+Key 2 Press the keys concurrently. For example, pressing Ctrl+Alt

+Ameans the three keys should be pressed concurrently.

Key 1, Key 2 Press the keys in turn. For example, pressing Alt, Ameans

the 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 moving

the pointer.

Double-click Press the primary mouse button twice continuously and

quickly without moving the pointer.

Drag Press and hold the primary mouse button and move the

pointer to a certain position.

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Contents

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

1 Changes in the BTS3900 (Ver.C) Hardware Description.......................................................1

2 Exterior of the BTS3900 Cabinet.................................................................................................3

3 BTS3900 Hardware Configurations...........................................................................................4

3.1 Module Configurations in the Cabinet...............................................................................................................5

3.2 Cabinet Application Scenarios........................................................................................ ...................................7

3.3 Power Equipment.............................................................................................................................................10

3.3.1 Configurations of the Upper-Level Circuit Breakers and Power Cables................................................11

3.3.2 Cabinet Power Distribution.....................................................................................................................14

3.4 BTS3900 Monitoring System...........................................................................................................................15

3.4.1 BBU Monitoring Ports.............................................................................................................................15

3.4.2 Monitoring Principles of the Cabinet......................................................................................................16

3.4.3 Customized Alarm Inputs........................................................................................................................18

4 BTS3900 Components.................................................................................................................20

4.1 BBU3900 Equipment.......................................................................................................................................22

4.1.1 BBU3900.................................................................................................................................................22

4.1.2 BBU3900 Components............................................................................................................................23

4.2 GRFU................................................................................................................................................................76

4.3 DRFU................................................................................................................................................................80

4.4 WRFU...............................................................................................................................................................83

4.5 MRFU...............................................................................................................................................................87

4.6 LRFU................................................................................................................................................................90

4.7 DCDU-11A.......................................................................................................................................................94

4.8 Fan Box.............................................................................................................................................................95

4.9 GATM..............................................................................................................................................................97

4.10 ELU................................................................................................................................................................99

4.11 Power Equipment (AC/DC)............................................................................................................................99

4.11.1 Structure of the Power Equipment AC/DC...........................................................................................99

4.11.2 PMU.....................................................................................................................................................100

4.11.3 PSU (AC/DC)......................................................................................................................................103

4.11.4 Power Subrack (AC/DC).....................................................................................................................105

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5 BTS3900 Cables..........................................................................................................................106

5.1 List of BTS3900 Cables.................................................................................................................................108

5.2 Cable Connections..........................................................................................................................................113

5.2.1 Power Cable Connections......................................................................................................................113

5.2.2 Transmission Cable Connections..........................................................................................................115

5.2.3 CPRI Cable Connections.......................................................................................................................142

5.2.4 Monitoring Signal Cable Connections..................................................................................................153

5.2.5 RF Cable Connections...........................................................................................................................156

5.3 PGND Cables.......................................................................... .......................................................................169

5.4 Equipotential Cable........................................................................................................................................170

5.5 Power Cables..................................................................................................................................................170

5.5.1 Input Power Cable for the Cabinet........................................................................................................170

5.5.2 DCDU-11A Power Cable......................................................................................................................172

5.5.3 BBUPower Cable.................................................................................................................................173

5.5.4 Power Cable for the FAN Box..............................................................................................................173

5.5.5 RFU Power Cable..................................................................................................................................174

5.5.6 GATM Power Cable..............................................................................................................................175

5.6 Transmission Cables.......................................................................................................................................176

5.6.1 E1/T1 Cable...........................................................................................................................................176

5.6.2 FE/GE Cable..........................................................................................................................................179

5.6.3 FE/GE Fiber Optic Cable......................................................................................................................180

5.6.4 Interconnection Cable Between the FE Electrical Ports........................................................................181

5.6.5 Interconnection Cable Between FE Optical Ports.................................................................................181

5.7 CPRI Electrical Cable.....................................................................................................................................182

5.8 Signal Cables..................................................................................................................................................182

5.8.1 Monitoring Signal Cable for the PMU..................................................................................................182

5.8.2 Monitoring Signal Cable for the Fan Box.............................................................................................183

5.8.3 Fan BoxCascade Signal Cable..............................................................................................................184

5.8.4 Monitoring Signal Cable for the EMU..................................................................................................185

5.8.5 Monitoring Signal Cable for the GATM...............................................................................................185

5.8.6 BBU Alarm Cable.................................................................................................................................186

5.8.7 GPS Clock Signal Cable........................................................................................................................1885.8.8 Signal Cable for the ELU......................................................................................................................188

5.9 BTS3900 RF Cables.......................................................................................................................................189

5.9.1 RF Jumper..............................................................................................................................................189

5.9.2 Inter-RFU RF Signal Cable...................................................................................................................190

6 BTS3900 Auxiliary Equipment................................................................................................191

6.1 EMU...............................................................................................................................................................192

6.2 DDF................................................................................................................................................................192

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1Changes in the BTS3900 (Ver.C) HardwareDescription

This section describes the changes in theBTS3900 (Ver.C) Hardware Description.

04 (2012-01-10)

This is the fourth commercial release.

Compared with issue 03 (2011-10-25), no content is added.

Compared with issue 03 (2011-10-25), this issue incorporates the following changes:

Content Change DescriptionWMPT Add the transmission specifications of the

boards.UTRP

GTMU

LMPT

GTMU Modified the status description of LEDs on

the panel of the GTMU.

UBRI Modified the status description of LEDs on

the panel of the UBRI.

Compared with issue 03 (2011-10-25), no content is deleted.

03 (2011-10-25)

This is the third commercial release.



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Content Change Description

About This DocumentAdded the version V300R009 to BTS3900

(Ver.C) GSM.

UTRPUpdated the LED indicators on the panel ofthe UTRP.


02 (2011-09-30)

This is the second commercial release.



Content Change Description

3.3.1 Configurations of the Upper-Level

Circuit Breakers and Power Cables

Updated the specifications for the upper-level

circuit breakers and cables used for supplying

AC power to the cabinet.

5.2.1 Power Cable ConnectionsUpdated the figure of power cable

connections.

GTMUModified the description of the E1 bypass

function.

UTRP Modified the description of DIP switches.


01 (2011-08-30)

This is the first commercial release.

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2Exterior of the BTS3900 CabinetThe BTS3900 cabinet is a vertical cabinet, which is designed in compliance with the IEC297

standard.

Figure 2-1shows the exterior and dimension of a BTS3900 cabinet.

Figure 2-1Exterior and dimension of a BTS3900 cabinet

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3BTS3900 Hardware ConfigurationsAbout This Chapter

This chapter describes configurations of the BTS3900 cabinet, power configurations, and

monitoring configurations. It serves as a reference for planning and deploying the BTS3900.

3.1 Module Configurations in the Cabinet

The BTS3900 cabinet uses a modular design. The main components in the cabinet are the

BBU3900, RFU, DCDU-11A, fan box. The power equipment (AC/DC) is an optional

component.

3.2 Cabinet Application Scenarios

BTS3900 cabinets can be stacked or installed side by side. The side-by-side installation mode

is recommended. If the space in the equipment room is insufficient, the stack mode can be used.

3.3 Power Equipment

The BTS3900 supports 110 V AC, 220 V AC, and -48 V DC power supplies. When AC power

supply is used, the AC power must be converted to -48 V DC power for the base station.

3.4 BTS3900Monitoring System

The BTS3900 monitoring system monitors all boards and components in the cabinet. If any

board or component is faulty, an alarm is automatically reported. Alarm signals are collected

both inside and outside the cabinet by the UPEU, UEIU, EMU, PMU, and FMU, achieving

monitoring of the entire BTS3900.

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3.1 Module Configurations in the Cabinet

The BTS3900 cabinet uses a modular design. The main components in the cabinet are the

BBU3900, RFU, DCDU-11A, fan box. The power equipment (AC/DC) is an optional

component.

The BTS3900 cabinets can be classified into two types: the BTS3900 cabinet (-48 V DC) and

BTS3900 cabinet (AC).

Figure 3-1Module configurations in the BTS3900 cabinet (-48 V DC)

(1) RFU (2) Fan box (3) Air inlet

(4) BBU3900 (5) DCDU-11A -

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Figure 3-2Module configurations in the BTS3900 cabinet (AC)

(1) RFU (2) Fan box (3) Air inlet

(4) BBU3900 (5) DCDU-11A (6) Power equipment (AC/DC)

Table 3-1describes the components in the cabinet.

Table 3-1Components in the cabinet

Module Optional orMandatory

MaximumNumberConfiguredin a SingleCabinet

Remarks

RFU Mandatory 6 The RFU performs modulation and

demodulation between baseband signals and

RF signals, processes data, and combines and

divides signals.

RFU filler

panel

Optional 6 To ensure proper ventilation of the cabinet, the

slot in the RFU subrack that does not house an

RFU must be installed with a filler panel.

Fan box Mandatory 1 The fan dissipates heat in the cabinet.

BBU3900 Mandatory The BBU3900 processes the baseband signals

and enables interaction between the base

station and the BSC, RNC, or evolved packet

core (EPC).

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Module Optional orMandatory

MaximumNumberConfiguredin a Single

Cabinet

Remarks

DCDU-11

A

Mandatory 2 When there are two BBUs, two DCDU-11A

modules must be configured to supply power

to the two BBUs respectively. When there is

only one BBU, one DCDU-11A is required.

Power

equipment

(AC/DC)

Optional 1 The power equipment (AC/DC) converts

external 220 V AC single-phase power, 220 V

AC three-phase power, and 110 V AC dual-

live-wire power into -48 V DC power and

provides power to all components in the

cabinet.

Vacant

space

- - l There is a 3 U vacant space in the BTS3900

cabinet (-48 V DC) for customer

equipment.

The customer equipment must be able

to work properly at a temperature equal

to or higher than 55C.

The BTS3900 cabinet (-48 V DC) can

supply power to customer transmission

equipment.

l There is no vacant space in the BTS3900

cabinet (AC).

3.2 Cabinet Application Scenarios

BTS3900 cabinets can be stacked or installed side by side. The side-by-side installation mode

is recommended. If the space in the equipment room is insufficient, the stack mode can be used.

Cabinet Configuration Principles

l Both the BTS3900 cabinets DC (-48 V) and BTS3900 cabinets AC support the side-by-

side installation mode.

l In a single-mode or dual-mode scenario, only one BBU is configured.

l The BTS3900 cabinets DC (-48 V) can be stacked.

l The stacking of the BTS3900 cabinets AC is not recommended. If the cabinets are stacked,

the highest operating temperature of the cabinets is 50C.

Figure 3-3and Figure 3-4show two side-by-side installed cabinets in a single-mode or dual-

mode scenario.

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Figure 3-3Two side-by-side BTS3900 DC (-48 V) cabinets in a single-mode or dual-mode

scenario

Figure 3-4Two side-by-side BTS3900 AC cabinets in a single-mode or dual-mode scenario

Figure 3-5and Figure 3-6show the stack installation mode with two cabinets in a single-mode

or dual-mode scenario.

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Figure 3-5Two stacked BTS3900 DC (-48 V) cabinets in a single-mode or dual-mode scenario

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Figure 3-6Two stacked BTS3900 AC cabinets in a single-mode or dual-mode scenario

3.3 Power Equipment

The BTS3900 supports 110 V AC, 220 V AC, and -48 V DC power supplies. When AC power

supply is used, the AC power must be converted to -48 V DC power for the base station.

Table 3-2and Table 3-3list the input voltage scopes supported by the BTS3900.

Table 3-2AC input voltage scopes

Power Supply Rated Voltage Operating voltage

200 V AC single-phase 220 V AC to 240 V AC 176 V AC to 290 V AC

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Power Supply Rated Voltage Operating voltage

220 V AC three-phase 220 V AC to 240 V AC 176 V AC to 290 V AC

110 V AC dual-live-wire 100 V AC to 120 V AC 90 V AC to 135 V AC

Table 3-3DC input voltage scope

Power Supply Rated Voltage

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

3.3.1 Configurations of the Upper-Level Circuit Breakers and PowerCables

This section describes the recommended configurations of the upper-level circuit breaker and

power cables for the BTS3900. The recommended configurations are all based on a fully

configured base station, which has the peak output power. The power requirements for the

customer equipment in the cabinet are also considered.

The upper-level circuit breakers and power cables used by the BTS3900 varyaccordingto the

external power supply.

NOTE

l All power cables must comply with local standards.

l P is short for Pole, indicating the number of switches simultaneously controlled by a pole.

BTS3900 DC

In the -48 V DC power supply scenario, the recommended configurations of the upper-level

circuit breakers and power cables for the BTS3900 are listed in Table 3-4.

Table 3-4Recommended configurations of the upper-level circuit breakers and power cables

for the BTS3900 DC

Configuration(1)(2)

(9)(10)

Minimum CircuitBreakerConfigurationRequired byCustomer

Equipment(3)(4)(5)

Power Cable(8) Length of the

Power Cable

l Four to six high-

power RFUs(6)

l One to two BBUs(9)

2 x 80A/1P

(recommended)2 x 16 mm2cables

(from one

DCDU-11A)

15 m

1 x 160A/1P 1 x 35 mm2low

smoke zero halogen

(LSZH) cable

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Configuration(1)(2)

(9)(10)

Minimum CircuitBreakerConfigurationRequired by

CustomerEquipment(3)(4)(5)

Power Cable(8) Length of thePower Cable

l Four to six low-

power RFUs(7)

l Two BBUs

1 x 100A/1P 1 x 35 mm2LSZH

cable

2 x 63A/1P 2 x 16 mm2cables

(from one

DCDU-11A)

l Four to six low-

power RFUs

l One BBU

1 x 80A/1P 1 x 16 mm2cable

l One to three high-

power RFUs

l Two BBUs

1 x 100A/1P 1 x 35 mm2LSZH

cable

2 x 63A/1P 2 x 16 mm2cables

(from one

DCDU-11A)

l One to three high-

power RFUs

l One BBU


l One to three low-

power RFUs

l One to two BBUs


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NOTE

(1) If both high-power RFUs and low-power RFUs exist in the same base station, the power configuration

for high-power RFUs will apply for the base station.

(2) If possible, it is suggested to configure the base station with the power configuration for maximum

high-power RFUs so as to satisfy all scenarios. If the power configuration has to be in accordance withactual scenarios, the circuit breaker and power cables need to be upgraded in case of base station extension.

(3) The power configuration applicable for the scenarios with higher power consumption is also applicable

for the scenarios with lower power consumption.

(4) The circuit breakers for high load capability are applicable to those for low load capability. The sequence

of load capability for circuit breakers is: 1 x 160A > 2 x 80A > 2 x 63A > 1 x 100A > 1 x 80A > 1 x 63A.

(5) The power consumption of inner transmission is ignored for the circuit breakers of indoor macro base

station.

(6) High-power RFUs include: LRFUe, WRFUd, and MRFUd.

(7) Low-power RFUs include: DRFU, GRFU, WRFU, MRFU, CRFU, LRFU. and MRFU V3.

(8) If two external power inputs are supplied, the following requirements must be met:

l The two power inputs must be supplied by the same power cabinet.

l The circuit breakers used for the two power inputs have the same model and specifications.

l The power cables for the two power inputs must have the same cross-sectional area and length.

l When powering on the base station, turn on the two circuit breakers of power input before turning

on the circuit breakers for all the RFUs. When powering off the base station, turn off the circuit

breakers for all the RFUs before turning off the two circuit breakers of power input.

(9) One DCDU-11A can supply a maximum of three power inputs for two BBUs. The cabinet can be

configured with a maximum of two BBUs, one with power consumption of 650 W and the other with power

consumption of 360 W. If an additional DCDU-11A is configured, the cabinet can be configured with two

BBUs both with power consumption of 650 W.

(10) If two BBU3900s are configured, the second BBU3900 shall obtain power from a power cab inet

outside of the DCDU-11A in the base station that the second BBU3900 installed.

BTS3900 AC

In the 110 V AC or 220 V AC power supply scenario, the recommended configurations of the

upper-level circuit breaker and power cables for the BTS3900 are listed in Table 3-5.

Table 3-5Recommended configurations of circuit breakers and power cables

Configuration Power Supply CircuitBreakerConfiguration

Required byCustomerEquipment

Cross-sectional Areaof the Input

Power Cable

Length of thePower Cable

l One to six

high power

RFUs

l One BBU

220 V AC three-

phase power

1 x 16A/3P 1 x 2.5mm2(11) 15 m

200 V AC

single-phase

power

1 x 32A/1P 1 x 4mm2(12)

110 V AC dual-

live-wire power

1 x 32A/2P

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NOTE

(11) The AC power cable should be double insulated with 4 cores inside.

(12) The AC power cable should be double insulated with 3 cores inside.

3.3.2 Cabinet Power Distribution

This section describes power distribution modes of the BTS3900 cabinet.

Power Distribution of the BTS3900 Cabinet (-48 V DC)

The external power equipment supplies -48 V DC power to the DCDU-11A in the BTS3900

cabinet (-48 V DC), and the DCDU-11A feeds power to each module in the BTS3900 cabinet.

Figure 3-7shows power distribution principles. Table 3-6describes output ports.

Figure 3-7Power distribution of the BTS3900 cabinet (-48 V DC)

NOTE

MCB: miniature circuit breaker

Table 3-6Output ports on the DCDU-11A

Output Port Description

LOAD0 to LOAD5 Supplies power to RFU0 to RFU5

LOAD6 Supplies power to the fan box

LOAD7 and LOAD8 Supplies power to the BBU

LOAD9 Serves as a standby output port

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Power Distribution of the BTS3900 Cabinet (AC)

The external power equipment supplies 220 V AC single-phase or three-phase power, or 110 V

AC dual-live-wire power to the BTS3900 cabinet (AC). The power equipment (AC/DC) converts

the AC power into -48 V DC power and feeds the -48 V DC power to the DCDU-11A. Then,

the DCDU-11A feeds power to each module in the cabinet. Figure 3-8shows power distribution

principles. Table 3-6describes output ports.

Figure 3-8Power distribution of the BTS3900 cabinet (AC)

3.4 BTS3900 Monitoring SystemThe BTS3900 monitoring system monitors all boards and components in the cabinet. If any

board or component is faulty, an alarm is automatically reported. Alarm signals are collected

both inside and outside the cabinet by the UPEU, UEIU, EMU, PMU, and FMU, achieving

monitoring of the entire BTS3900.

3.4.1 BBU Monitoring Ports

The BBU provides two scenarios: 360 W and 650 W. In the 360 W scenario, the UPEU andUEIU are used. In the 650 W scenario, two UPEUs are configured. Each board provides two

Boolean input ports and two RS485 signal input ports. Each Boolean input port can be used for

monitoring four Boolean inputs. Figure 3-9and Figure 3-10show slot configurations.

Figure 3-9Slot configurations of the UPEU and UEIU (in the 360 W scenario)

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Figure 3-10Slot configurations of two UPEUs (in the 650 W scenario)

Table 3-7lists the monitoring ports on the UPEU and UEIU.

Table 3-7Monitoring ports on the UPEU and UEIU

Slot Board Label Connector Quantity Description

Slot 19 UPEU EXT-ALM0 RJ45 1 Port for

Boolean

inputs 0 to 3

EXT-ALM1 RJ45 1 Port for

Boolean

inputs 4 to 7

MON0 RJ45 1 Port for

RS485 input

0


RS485 input1

Slot 18 UEIU

(Optional)


Boolean

inputs 0 to 3


Boolean

inputs 4 to 7


RS485 input

0


RS485 input

1

3.4.2 Monitoring Principles of the Cabinet

The BTS3900 cabinet is managed by monitoring boards, such as the FMU and PMU. Each

monitoring board is connected to the MON port on the BBU. They collect alarms of allcomponents and report the alarms to the BBU by using the RS485 serial bus.

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l The FMU is configured in the FAN box of BTS3900 DC (-48 V) cabinet or BTS3900 AC

cabinet.

l The PMU is configured in the BTS3900 AC cabinet AC. For details about functions of the

monitoring ports on the PMU, see 4.11.2 PMU.

This document describes monitoring principles of two BTS3900 cabinets. If cabinet 1 is not

configured, the monitoring cables connected to the cabinet are not required.

Figure 3-11Monitoring system for the BTS3900 DC (-48V) cabinet

Figure 3-12Monitoring system for the BTS3900 AC cabinet

NOTE

Refer to 3.4.3 Customized Alarm Inputsfor monitoring principle of the EMU.

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3.4.3 Customized Alarm Inputs

When customer equipment generates an alarm, the alarm must be reported to the BBU.

Customized alarms are reported to the BBU by any of the following methods:

l The alarms are collected by the UPEU or UEIU in the BBU.

l The alarms are collected by the EMU.

For details about the configuration of customized alarms, see the related initial configuration

guide.

Monitoring Board Configuration

The configuration of the monitoring boards in the BTS3900 depends on the number of

customized alarm inputs, as listed in Table 3-8.

Table 3-8Configuration of monitoring boards in the BTS3900

Cabinet Type Number of Dry ContactAlarm Inputs

Monitoring Board

-48 V DC cabinet or

AC cabinet

1 to 8 UPEU

1 to 16 UPEU+UEIU

1 to 32 UPEU+UEIU+EMU

NOTE

l If backup power is required for the BBU, two UPEUs are configured instead of UPEU+UEIU.

l If three cabinets are configured for the BTS3900, only one UEIU is required to monitor both RS485

and dry contact alarms.

l Analog values can be monitored only by the EMU.

l The EMU with sensors can be configured based on site requirements.

Customized Alarms Collected by the UPEU or UEIU

Each UPEU or UEIU in the BBU supports eight Boolean alarm inputs. A maximum of two

UPEUs or UPEU+UEIU can be configured for the BBU to receive 16 Boolean alarm inputs.

This method can be used for the configuration of fewer than 16 customized alarm inputs. The

method of collecting customized alarms by using the UPEU or UEIU is shown in Figure

3-13.

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Figure 3-13Customized alarms collected by the UPEU or UEIU

Customized Alarms Collected by the EMU

If there are more than 16 Boolean alarm inputs, an EMU can be configured for the BTS3900.

Each EMU supports 32 Boolean alarm inputs and two RS485 signal inputs, the cable connections

are shown in Figure 3-14.

l BTS3900 cabinet (-48 V DC): The EMU is connected to the MON1 port on the UPEU in

the BBU.

l BTS3900 cabinet (AC): The EMU is connected to the COM OUT port on the PMU in the

power equipment (AC/DC).

Figure 3-14Customized alarms collected by the EMU

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4BTS3900 ComponentsAbout This Chapter

BTS3900 components consist of the BBU3900, RFUs, DCDU-11A, fan box, power equipment

(AC/DC), and optional modules. The power equipment (AC/DC) is configured only in the

BTS3900 cabinet (220 VAC).

4.1 BBU3900Equipment

This section presents theexterior of the BBU3900 and describes the boards in the BBU3900 and

their panels, functions, indicators, ports, and engineering specifications.

4.2 GRFU

GSM radio frequency unit (GRFU) is an RF unit of GSM radio filter and applies to GO scenario.

4.3 DRFU

Double radiofrequencyunit (DRFU) is an RF unit of GSM radio filter and applies to GO

scenario.

4.4 WRFU

WCDMA Radio Frequency (WRFU) is an RF unit of WCDMA radio filter and applies to UO

scenario.

4.5 MRFU

Multi-Mode Radio Frequency Unit (MRFU) is a type of RF unit that can work in multiple radio

frequencies. It applies to scenarios such as GO, UO, LO, GU and GL.

4.6 LRFU

LTE Radio Frequency Unit (LRFU) is an RF unit of LTE FDD (Frenquency Division Duplex)

and applies to LTE Only scenario.

4.7 DCDU-11A

The DCDU-11A provides DC power to all components in the cabinet.

4.8 Fan Box

A fan box consists of a fan tray, four fans, and an FMU.

4.9 GATM

The GSM Antenna and TMA control Module (GATM) controls the antenna and TMA.

4.10 ELU

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The Electronic Label Unit (ELU) reports the cabinet type information to the fan box.

4.11 Power Equipment (AC/DC)

The power equipment (AC/DC) converts 220 V AC power into -48 V DC power.

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4.1 BBU3900 Equipment

This section presents the exterior of the BBU3900 and describes the boards in the BBU3900 and

their panels, functions, indicators, ports, and engineering specifications.

The BBU3900 performs the following functions:

l Provides ports for communication between the base station and the BSC or RNC.

l The GTMU provides CPRI ports for communication between the BBU and the RFUs.

l Provides USB ports. A USB flash drive can be inserted into the USB port to perform the

automatic base station upgrade during software installation and data configuration.

l Provides an OM channel between the basestation andthe LMT or the M2000 to operate

and maintain the base station.

l Processes uplink and downlink data.

l Manages the entire dual-mode system in terms of OM and signaling processing.

l Provides the system clock.

4.1.1 BBU3900

The BBU3900, which has a case structure, is 19 inches wide and 2 U high.

The dimensions of the BBU3900 are 86 mm x 442 mm x 310 mm x (3.39 in. x 17.4 in. x 12.2

in.) (H x W x D), as shown in Figure 4-1.

Figure 4-1BBU3900

The Electronic Serial Number (ESN) is a unique identifier of a Network Element (NE). It is used

during base station commissioning.

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 Figure 4-2.

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Figure 4-2ESN (1)

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 Figure 4-3.

Figure 4-3ESN (2)

4.1.2 BBU3900 Components

This describes the boards and module of the BBU3900 in terms of their configuration principles,

functions, ports, LEDs, and DIP switches.

Slot Assignment of the BBU3900

This section describes slot assignment of the BBU3900 in the GSM Only (referred to as GO),UMTS Only (referred to as UO), LTE Only (referred to as LO), GSM+UMTS (referred to as

GU), GSM+LTE (referred to as GL), and UMTS+LTE (referred to as UL) scenarios.

Slots of the BBU3900

The board configurations of the BBU3900 in GO mode, BBU3900 in GU mode, BBU3900 in

UO mode, BBU3900 in LO mode, BBU3900 in GL mode, and BBU3900 in UL mode are the

same, as shown in Figure 4-4.

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Figure 4-4Slots of the BBU3900

BBU3900 Working in GO Mode

Table 4-1describes the principles for configuring the boards in the BBU3900 working in GO

mode.

Table 4-1Principles for configuring the boards in the BBU3900 in GO mode

Board Optional orMandatory

MaximumQuantity

Slot Remarks

GTMU Mandatory 1 Slots 5 and 6 It is configured

only in slot 6

(with both slots

5 and 6

occupied).

FAN Mandatory 1 Slot 16 It is configured

only in slot 16.

UPEU Mandatory 2 Slot 18 or 19 A single UPEU

is preferentially

configured in

slot 19.

USCU Optional 1 Slot 0 or 1 It is

preferentially

configured in

slot 1.

The 1 U GPS/

GLONASS

receiver is

configured in

slot 1 (with slots

0 and 1

occupied).

UTRP Optional 1 Slot 0 or 4 It is

preferentially

configured in

slot 4.

UEIU Optional 1 Slot 18 -

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Figure 4-5shows the typical configurations of the BBU3900 in GO mode.

Figure 4-5Typical configurations of the BBU3900 working in GO mode

BBU3900 Working in UO ModeTable 4-2describes the principles for configuring the boards in the BBU3900 working in UO

mode.

Table 4-2Principles for configuring the boards in the BBU3900 working in UO mode


MaximumQuantity

Slot Remarks

WMPT Mandatory 2 Slot 6 or 7 A single WMPT

is preferentially

configured in

slot 7.

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MaximumQuantity

Slot Remarks

WBBP Mandatory 6 Slots 0 to 5 It is configured

in slot 3 bydefault.

l If more

CPRI ports

are required,

the WBBP is

installed, in

descending

order of

priority, in

slot 3 or 2.

l If no more

CPRI ports

are required,

the WBBP is

installed, in

descending

order of

priority, in

slot 3, 0, 1, 2,

4, or 5.

If a WBBPd is

required, it is

installed, indescending

order of priority,

in slot 3 or 2.

If five or more

WBBPs are

required, ensure

that two WBBPs

are installed in

slots 2 and 3. At

least one of the

two WBBPs is

WBBPd.

FAN Mandatory 1 Slot 16 It is configured

only in slot 16.


is preferentially

configured in

slot 19.


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MaximumQuantity

Slot Remarks

UTRP Optional 4 Slot 0, slot 1,

slot 4, and slot 5

It is installed, in

descendingorder of priority,

in slot 4, 5, 0, or

1.

USCU Optional 1 Slot 1 or 0 The USCU is

preferentially

configured in

slot 1.

The 1 U GPS/

GLONASS

receiver is

configured inslot 1 (with slots

0 and 1

occupied).

Figure 4-6shows the typical configurations of the BBU3900 working in UO mode.

Figure 4-6Typical configuration of the BBU3900 in UO mode

BBU3900 Working in LO Mode

Table 4-3describes the principles for configuring the boards in the BBU3900 working in LO

mode.

Table 4-3Principles for configuring the boards in the BBU3900


MaximumQuantity

Slot Remarks

LMPT Mandatory 2 Slot 6 or 7 A single LMPT

is configured in

slot 7.

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MaximumQuantity

Slot Remarks

LBBP Mandatory 3 Slots 1 to 3 A single LBBP

is configured inslot 3, 1, or 2 in

descending

order of priority.

FAN Mandatory 1 Slot 16 Configured only

in slot 16


is configured

only in slot 19.


UTRP Optional 1 Slot 4 or slot 5 It is

preferentially

configured in

slot 4.

USCU Optional 1 Slot 0, 1, 4, or 5 A single USCU

is preferentially

configured in

slot 5. A USCU

that occupies 1

U space is

configured in

slots 5 and 4.

If slots 4 and 5

are occupied, a

single USCU is

configured in

slot 1. In this

situation, a

USCU that

occupies 1 U

space is

configured in

slots 1 and 0.

Figure 4-7shows the typical configurations of the BBU3900 working in LO mode.

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Figure 4-7Typical configurations of the BBU3900 working in LO mode

BBU3900 Working in GU Mode

Table 4-4describes the principles for configuring the boards in the BBU3900 working in GU

mode.

Table 4-4Principles for configuring the boards in the BBU3900 working in GU mode


MaximumQuantity

Slot Remarks

WMPT Mandatory 1 Slot 7 The WMPT can

be configured

only in slot 7.


only in slot 6

(with slots 5 and6 occupied).

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MaximumQuantity

Slot Remarks

WBBP Mandatory 5 Slots 0 to 4 It is configured

in slot 3 bydefault.

l If more

CPRI ports

are required,

the WBBP is

installed, in

descending

order of

priority, in

slot 3 or 2.

l If no more

CPRI ports

are required,

the WBBP is

installed, in

descending

order of

priority, in

slot 3, 2, 0, 1,

or 4.

If a WBBPd is

required, it is

installed, indescending

order of priority,

in slot 3 or 2.

If five or more

WBBPs are

required, ensure

that two WBBPs

are installed in

slots 2 and 3.


in slot 16


can be

configured only

in slot 19.


UTRP Optional 2 Slots 0, 1, and 4 It is installed, in

descending

order of priority,

in slot 4, 0, or 1.

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MaximumQuantity

Slot Remarks

USCU Optional 1 Slot 0 or 1 It is

preferentiallyconfigured in

slot 1.

The 1 U GPS/

GLONASS

receiver is

configured in

slot 1 (with slots

0 and 1

occupied).

UBRI Optional 1 Slot 2 In the

V100R003C01,the UBRI is

configured in

slot 2 or 1 in

descending

order of priority.

Figure 4-8shows the typical configurations of the BBU3900 working in GU mode.

Figure 4-8Typical configurations of the BBU3900 working in GU mode

BBU3900 Working in GL Mode

Table 4-5describes the principles for configuring the boards in the BBU3900 working in GL

mode.

Table 4-5Principles for configuring the boards in the BBU3900 working in GL mode


MaximumQuantity

Slot Remarks

LMPT Mandatory 1 Slot 7 It is configured

only in slot 7.

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MaximumQuantity

Slot Remarks


only in slot 6(with slots 5 and

6 occupied).

LBBP Mandatory 3 Slots 1 to 3 It is configured

in slot 3, 1, or 2

in descending

order of priority.


in slot 16


is configuredonly in slot 19.


UTRP Optional 2 Slot 0, 1, or 4 It is installed, in

descending

order of priority,

in slot 4, 0, or 1.

The slot priority

of the GO UTRP

is higher than

that of the LOUTRP

USCU Optional 1 Slot 0 or 1 The USCU is

preferentially

configured in

slot 1.

The 1 U GPS/

GLONASS

receiver is

configured in

slot 1 (with slots

0 and 1occupied).

UBRI Optional 1 Slot 2 In the

V100R003C01,

the UBRI is

configured in

slot 2 or 1 in

descending

order of priority.

Figure 4-9shows the typical configurations of the BBU3900 working in GL mode.

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Figure 4-9Typical configuration of the BBU3900 working in GL mode

BBU3900 Working in UL Mode

Table 4-6describes the principles for configuring the boards in the BBU3900 working in UL

mode.

Table 4-6Principles for configuring the boards in the BBU3900 working in UL mode


MaximumQuantity

Slot Remarks

LMPT Mandatory 1 Slot 6 It is configured

only in slot 6.

WMPT Mandatory 1 Slot 7 It is configured

only in slot 7.

LBBP Mandatory 5 Slot 0, 1, 2, 4, or

5

A single LBBP

is configured

only in slot 2. If

more LBBPs are

required, the

LBBP is

installed, in

descending

order of priority,

in slot 2, 0, 1, 4,

or 5.

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MaximumQuantity

Slot Remarks

WBBP Mandatory 4 Slot 0, 1, 3, 4, or

5

A single WBBP

is configuredonly in slot 3. If

more LBBPs are

required, the

WBBP is

installed, in

descending

order of priority,

in slot 3, 0, 1, 4,

or 5.

If a WBBPd is

required, it is

configured onlyin slot 3.


in slot 16


is configured

only in slot 19.


UTRP Optional 2 Slot 4 or slot 5 It is

preferentiallyconfigured in

slot 4.

The slot priority

of the UO UTRP

is higher than

that of the LO

UTRP.

USCU Optional 1 Slot 4 or slot 5 It is

preferentially

configured in

slot 4.

Figure 4-10shows the typical configurations of the BBU3900 working in UL mode.

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Figure 4-10Typical configuration of the BBU3900 working in UL mode

GTMU

The GSM Transmission &Timing & Management Unit for BBU (GTMU) is the basic

transmission and control function entity of the BBU. It provides the reference clock, maintenanceport, and external alarm collection port, monitors the power, control and manage the entire BTS.

Specifications of the GTMU

The GTMU is classified into two types: GTMU and GTMUb. Table 4-7lists the specifications

of the GTMU and GTMUb.

Table 4-7Specifications of the GTMU

Board Mode Transmission Mode

Port PortCapacity

Full/Half-Duplex

GTMU/GTMUb

GSM TDM over E1/T1

1 Four channels

Full-duplex

Transmissio

n over FE/

GE optical

cable

1 10 Mbit/s

and 100

Mbit/s

Full-duplex

Transmissio

n over FE/

GE electrical

cable

1 10 Mbit/s

and 100

Mbit/s

Full-duplex

Panel

Figure 4-11and Figure 4-12show the panels of the GTMU and GTMUb.

Figure 4-11GTMU panel

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Figure 4-12GTMUb panel

Functions

The GTMU performs the following functions:

l Controls, maintains, and operates the base station.

l Supports fault management, configuration management, performance management, and

security management.

l Monitors the fans and power modules.

l Provides and manages the clock source of the base station in centralized mode.

l Provides the clock output for test.

l Provides the FE port for maintenance on the OM system.

l Supports transmission through four E1s and two FEs.

l Provides CPRI ports for communication between the BBU and the RF units.

Indicator

Table 4-8describes the indicators on the GTMU.

Table 4-8Indicators on the GTMU

Indicator Color Status Description

RUN Green Steady on The board is faulty.

Steady off There is no power supply, or the

board is faulty.

On for 1s and off for

1s

The board is running properly.


2s

The base station is disconnected

from the base station controller.

On for 0.125s and off

for 0.125s

Software is being upgraded or

loaded from the USB flash

drive.

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ALM Red Steady on An alarm is generated,

indicating a fault.

Steady off There is no fault.

ACT Green Steady on The board works in the active

state.

Steady off The board works in the standby

state.

Besides the preceding three indicators, there are some other indicators on the board, which are

used for indicating the connection status of the FE optical port, FE electrical port, CPRI port,

commissioning Ethernet port. They are near the corresponding ports and have no silkscreen.Table 4-9describes the indicators.

Table 4-9Indicators for ports


LIU0 to LIU3 Green Steady on The link is in the idle

state or a local alarm

is generated.


1s

An E1/T1 remote

alarm is generated.

Steady off The link is

functional.

CPRI0 to CPRI5 Red/green Steady green The inter-BBU

transmission link is

normal.

Steady red An optical module

fails to receive

signals because the

optical module is

faulty or the fiberoptic cable is broken.

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Blinking red (on for

1s and off for 1s)

The interconnection

link is out of lock

because there ismutual lock between

the BBU cases or

mismatched data rate

over QSFP ports.

You are advised to

check the system

configuration to

locate the fault.

Steady off The QSFP module

cannot be detected,

or the optical moduleis powered off.

ETH Green (LINK

indicator on the left)

Steady on The connection is set

up successfully.

Steady off No connection is set

up.

Orange (ACT

indicator on the

right)

Blinking Data is being

transmitted or

received.

Steady off No data is beingtransmitted or

received.

FE0 Green (LINK



up successfully.


up.

Orange (ACT

indicator on the

right)


transmitted or

received.

Steady off No data is being

transmitted or

received.

FE1 (on the

GTMUb)

Green (LINK



up successfully.


up.

Green (ACT

indicator on the

right)


transmitted or

received.

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transmitted or

received.M_S (on the

GTMUb)

- - This is the indicator

for the reserved port.

EXT (on the

GTMUb)

- - This is the indicator

for the reserved port.

Port

Table 4-10describes the ports on the GTMU.

Table 4-10Ports on the GTMU

Silkscreen Connector Description

CPRI0 to CPRI5 SFP female

connector

Data transmission port interconnected to the RFU.

It supports the input and output of optical and

electrical transmission signals.

EXT (on the

GTMUb)

SFP female

connector

Reserved

ETH RJ45 connector Local maintenance and commissioning port

FE0 RJ45 connector Connected to the routers in the equipment room

through FE cables to transmit network

information

FE1 DLC connector Connected to the routers in the equipment room

through optical cables to transmit network

information

USB USB connector Used for automatic software upgrade through the

USB disk

TST USB connector Providing reference clock for the test instruments

E1/T1 port DB26 female

connector

Used for four E1/T1 inputs and outputs between

the GTMU and the UELP or between BSCs

The RSTbutton on the panel of the GTMU is used for resetting the board.

DIP Switch

On the GTMU, there are five DIP switches, each of which has four bits. DIP switches S1andS2need to be set jointly. The functions of the five DIP switches are as follows:

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l S1is used to set the E1 resistance. Table 4-11provides details on the DIP switch.

l S2is used to set the grounding mode of E1/T1 transmission cables. Table 4-12provides

details on the DIP switch.

l S3is reserved.

l S4is used to determine whether to enable E1 bypass. Table 4-13provides details on the

DIP switch.

l S5is used for timeslot settings when the E1 bypass is selected. Table 4-14provides details

on the DIP switch.

Table 4-11Description on S1

DIPSwitch

DIP Status Description

1 2 3 4

S1 ON ON OFF OFF The E1 resistance is set to

75 ohm.

OFF ON OFF OFF The E1 resistance is set to

120 ohm.

ON OFF OFF OFF The T1 resistance is set to

100 ohm.

Others Unavailable

NOTE

Bits 3 and 4 of S1should be kept the factory settings, without any manual setting onsite. The out-of-factory

state should be OFF. If the bits are ON, set them to OFF.


DIPSwitch


1 2 3 4

S2 OFF OFF OFF OFF All the bits are set to

OFF by default in all

modes.

ON ON ON ON When the four E1 RX

links in 75 ohm have

errors, all the bits of S2

must be set to ON to

rectify the faults on the

E1 links.

Others Unavailable

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DIPSwitch


1 2 3 4

S4 ON ON ON ON Supporting E1 bypass

OFF OFF OFF OFF Not supporting E1

bypass

Others Unavailable


DIP

Switch


1 2 3 4

S5 ON ON ON ON Not supporting E1

bypass

OFF ON ON OFF Supporting E1 bypass

for two cascaded base

stations

ON OFF ON OFF Supporting E1 bypass

for three cascaded base

stations

OFF OFF ON OFF Supporting E1 bypass

for four cascaded base

stations

ON ON OFF OFF Supporting E1 bypass

for five cascaded base

stations

OFF ON OFF OFF Supporting E1 bypass

for six cascaded base

stations

WMPT

The WCDMA main processing & transmission unit (WMPT) processes signals for the BBU3900

and manages resources for other boards in the BBU3900.

Specifications of the WMPT

Table 4-15lists the transmission capabilities of the WMPT.

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Table 4-15Transmission capabilities of the WMPT

Board TransmissionMode

Port Port Capacity Full/Half-Duplex

WMPT ATM over E1/T1 or IP over

E1/T1

1 Four channels Full-duplex

Transmission

over FE/GE

optical cable

1 100 Mbit/s and

1000 Mbit/s

Full-duplex

Transmission

over FE/GE

electrical cable

1 100 Mbit/s and

1000 Mbit/s

Full-duplex

Panel

Figure 4-13shows the WMPT.

Figure 4-13WMPT

Functions

The WMPT performs the following functions:

l Performs OM functions such as configuration management, equipment management,

performance monitoring, signaling processing, and active and standby switchover, and

providesOM channel to communicate with the LMT or M2000.

l Provides reference clock for the system.

l Processes signaling and manages resources for other boards in the BBU3900.

l Provides USB ports. A USB flash drive that stores required software and configuration data

can be inserted into the USB port to perform the automatic base station upgrade.

l Provides a 4-channel E1 port over ATM or IP.

l Provides an FE electrical port and an FE optical port over IP.

Indicator

Table 4-16describes the indicators on the WMPT panel.

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Table 4-16Indicators on the WMPT panel

Silkscreen Color Status Description

RUN Green Steady on There is power

supply, but the boardis faulty.

Steady off There is no power

supply.


1s

The board is

functioning properly

according to the

configuration.

On for 0.125s and off

for 0.125s

The board is being

loaded or configured,

the board is notstarted, or the board

is running properly.

ALM Red Steady off There is no fault.

Steady on A hardware alarm is

generated on the

board.

ACT Green Steady on The board serves as

an active board.

Steady off The board serves as astandby board.

In addition to the preceding three indicators, there are six indicators on the board, which indicate

the connection status of the FE optical port, FE electrical port, and debugging port. The six

indicators do not have silkscreen on the WMPT panel, whereas they are at both sides of the

corresponding ports, as shown in Figure 4-14.

Figure 4-14Indicators for the ports on the WMPT

Table 4-17lists the indicators on the board.

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Table 4-17Ports and Indicators


Indicators for the

FE1 optical port

Green (LINK) Steady on The connection is set

up successfully.


up.

Green (ACT) Blinking Data is being

transmitted or

received.


transmitted or

received.

Indicators for theFE0 electrical port

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


up.

Yellow (ACT) Blinking Data is being

transmitted or

received.


transmitted or

received.

Indicators for the

ETH port

Green (LINK) Steady on The connection is set

up successfully.


up.

Yellow (ACT) Blinking Data is being

transmitted or

received.


transmitted or

received.

Port

Table 4-18describes the ports on the panel of the WMPT.

Table 4-18Ports on the panel of the WMPT


E1/T1 port DB26 connector E1/T1 port

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FE0 RJ45 connector FE electrical port

FE1 SFP connector FE optical port

GPS SMA connector Reserved

ETH RJ45 connector Commissioning

USB USB connector USB loading port

TST USB connector USB commissioning port

RST - Reset button

DIP Switch

The WMPT has two DIP switches. SW1 is used to set the work mode of the E1/T1 signal cable,

and SW2 is used to set the resistance of the four E1/T1 signal cables in different modes. Figure

4-15shows the DIP switch settings of the WMPT.

Figure 4-15DIP switch settings of the WMPT

Table 4-19and Table 4-20list the DIP switch settings of the WMPT.

Table 4-19Settings of the DIP switch SW1 on the WMPT

DIPSwitch


1 2 3 4

SW1 ON ON OFF OFF T1

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DIPSwitch


1 2 3 4

OFF OFF ON ON The E1

resistance isset to 120

ohm.

ON ON ON ON The E1

resistance is

set to 75 ohm.

Others Unavailable

Table 4-20Settings of the DIP switch SW2 on the WMPT

DIPSwitch


1 2 3 4

SW2 OFF OFF OFF OFF Balanced

ON ON ON ON Unbalanced

Others Unavailable

LMPT

The LTE main processing & transmission unit (LMPT) manages the entire eNodeB system in

terms of O&M and signaling processing and provides system clock for the BBU3900.

Specifications of the LMPT

Table 4-21lists the specifications of the LMPT.

Table 4-21Specifications of the LMPT

Board Mode Transmission Mode

Port PortCapacity

Full/Half-Duplex

LMPT LTE Transmissio

n over FE/

GE optical

cable

2 10 Mbit/s,

100 Mbit/s,

and 1000

Mbit/s

Full-duplex

Transmissio

n over FE/

GE electrical

cable

2 10 Mbit/s,

100 Mbit/s,

and 1000

Mbit/s

Full-duplex

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Panel

Figure 4-16shows the LMPT.

Figure 4-16LMPT

Functions

The LMPT has the following functions:

l Enabling configuration management, device management, performance monitoring,

signaling processing, and radio source management

l Controls all boards in the system

l Providing the system clock

l Enabling signal exchange between the eNodeB and MME/S-GW

Indicator

There are three LEDs on the panel of the LMPT. Table 4-22describes the LEDs on the LMPT.

Table 4-22LEDs on the panel of the LMPT

Identifier Color Status Description

RUN Green Steady on There is power supply, but

the board is faulty.

Steady off There is no power supply,

or the board is faulty.

On for 1s and off

for 1s

The board is running

properly.

On for 0.125s and

off for 0.125s

The board is being loaded,

the board is not started, or

the board is running

properly.

ALM Red Steady on An alarm is reported,

indicating a fault in the

board.

Steady off The board is working

properly.

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On for 1s and off

for 1s

An alarm is generated, and

the alarm may be caused by

an associated board or portfault. Therefore, you must

locate the fault before

replacing the board.

ACT Green Steady on The board serves as an

active board.

Steady off The board serves as a

standby board.

On for 0.125s and

off for 0.125s

The OML link is

disconnected.

On for 1s and off

for 1s

The board is being tested,

such as an RRU Voltage

Standing Wave Ratio

(VSWR) test through a

USB disk. When an

upgrade through a USB

disk is implemented, the

ACT LED does not blink.

Besides the preceding three LEDs, some other LEDs used for indicating the connection statusof the FE optical port, FE electrical port, commissioning Ethernet port have no silkscreen on the

board. They are near the ports. Table 4-23describes the LEDs.

Table 4-23Ports and LEDs


SFP0 and SFP1 Green (LINK) Steady on The connection is set

up successfully.


up.

Orange (ACT) Blinking Data is being

transmitted or

received.


transmitted or

received.

ETH Orange (ACT) Blinking Data is being

transmitted or

received.

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transmitted or

received.Green (LINK) Steady on The connection is set

up successfully.


up.

FE/GE0 to FE/GE1 Green (LINK) Steady on The connection is set

up successfully.


up.

Orange (ACT) Blinking Data is beingtransmitted or

received.


transmitted or

received.

Port

Table 4-24describes the ports on the panel of the LMPT.

Table 4-24Ports on thepanel of the LMPT

Identifier Connector Quantity Purpose

SFP0 and SFP1 LC 2 FE/GE optical port

connecting to the

transmission

equipment or gateway

equipment

USB USB 1 Software loading

TST USB 1 Test port

ETH RJ45 connector 1 Commissioning

FE/GE0 to FE/GE1 RJ45 connector 2 FE/GE electrical port

connecting to the

transmission

equipment or gateway

equipment

GPS SMA connector 1 GPS port

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Identifier Connector Quantity Purpose

RST - 1 Resetting the

BBU3900

NOTE

SFP0 and FE/GE0 ports on the LMPT are used for one GE input. Therefore, they are not used

simultaneously.

SFP1 and FE/GE1 ports on the LMPT are used for another GE input. Therefore, they are not used

simultaneously.

WBBP

The WCDMA BaseBand Processing Unit (WBBP) in the BBU3900 processes baseband signals.

Panel

The WBBP has three types of panels, as shown in Figure 4-17, Figure 4-18, and Figure 4-19.

Figure 4-17Panel of the WBBPa

Figure 4-18Panel of the WBBPb

Figure 4-19Panel of the WBBPd

Functions

The WBBP performs the following functions:

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l Provides CPRI ports for communication with RF modules, and supports CPRI ports in 1

+1 backup mode.

l Processes uplink and downlink baseband signals.

l The WBBPd supports interference cancellation (IC) within the board.

l The WBBPd installed in slot 2 or slot 3 supports the IC function of uplink data.

Table 4-25describes the specifications of the WBBP.

NOTE

The baseband board in slot 2 or slot 3 could transfer the received CPRI data to other boards.

Table 4-25Specifications of the WBBP

Board Number ofCells

Number of ULCEs

Number of DLCEs

BasebandTransferCapacity

WBBPa 3 128 256 N/A

WBBPb1 3 64 64 Twelve 1T2R

cells


cells


cells


cells

WBBPd1 6 192 192 Twelve 1T2R

cells


cells


cells

Indicator

There are three indicators on the panel of the WBBP. Table 4-26describes the indicators on the

WBBP and their status.

Table 4-26Indicators on the panel of the WBBP and their status

Silkscreen Col

BTS3900 (Ver.C) Hardware Description(04)(PDF)-En

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