Huawei BTS3900C Hardware Description

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BTS3900C (Ver.C)

Hardware Description

Issue 03

Date 2013-05-27

HUAWEI TECHNOLOGIES CO., LTD.

Page 2

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 a 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: support@huawei.com

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BTS3900C (Ver.C) Hardware Description About This Document

About This Document

This document describes the functions, specifications, and configurations of the components in the BTS3900C (Ver.C) cabinet as well as cable types, cable connections, and connector specifications. This document serves as a reference for the BTS3900C (Ver.C) site planning and deployment. BTS3900C (Ver.C) is shortened to BTS3900C in this document.

Product Version

The following table lists the product versions related to this document.

Product Name Product Version

BTS3900C V100R007C00

BTS3900C WCDMA V200R014C00

Intended Audience

This document is intended for:

l System engineers

l Base station installation personnel

l Site maintenance personnel

Organization

1 Changes In BTS3900C (Ver.C) Hardware Description

This chapter describes the changes in the BTS3900C (Ver.C) Hardware Description.

2 BTS3900C Cabinet

This chapter describes the exterior, boards, modules, and configurations of the BTS3900C cabinets, providing reference for planning and deploying the BTS3900C.

3 BTS3900C Modules

This chapter describes the modules in the BTS3900C, including the BBU, RRU, and GPS surge protector.

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BTS3900C (Ver.C) Hardware Description About This Document

4 BTS3900C Power System

The BTS3900C supports 110 V AC, 220 V AC, and -48 V DC power supply. When AC power is used, the base station converts AC power into -48 V DC power.

5 BTS3900C Monitoring System

The BTS3900C monitoring system monitors all boards and components in a BTS3900C cabinet. If any board or component is faulty, an alarm is automatically reported. The RRU or UPEU and UEIU in the BBU collect monitoring signals from boards and components to monitor the surrounding environment of the BTS3900C.

6 BTS3900C Components

This section describes the components of a BTS3900C cabinet.

7 BTS3900C Cables

The BTS3900C cables are the PGND cables, power cables, transmission cables, CPRI cables, signal cables, and RF cables.

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 or medium level of risk which, if not avoided, could result in death or serious injury.

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

Indicates a potentially hazardous situation that, if not avoided, could result in equipment damage, data loss, performance deterioration, or unanticipated 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

Times New Roman Normal paragraphs are in Times New Roman.

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Description

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BTS3900C (Ver.C) Hardware Description About This Document

Convention Description

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

boldface. For example, log in as user root.

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.

Convention Description

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.

Convention

Description

Boldface Buttons, menus, parameters, tabs, window, and dialog titles

are 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.

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BTS3900C (Ver.C) Hardware Description About This Document

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 means

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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BTS3900C (Ver.C) Hardware Description Contents

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

1 Changes In BTS3900C (Ver.C) Hardware Description.............................................................1

2 BTS3900C Cabinet.........................................................................................................................3

2.1 Exterior of the BTS3900C Cabinet................................................................................................................................4

2.2 Interior of the BTS3900C Cabinet..................................................................................................................................4

2.3 BTS3900C Engineering Specifications........................................................................................................................10

3 BTS3900C Modules.....................................................................................................................12

3.1 BBU3900 Components.................................................................................................................................................13

3.1.1 BBU3900...................................................................................................................................................................13

3.1.2 BBU3900 Functions..................................................................................................................................................14

3.1.3 BBU3900 Technical Specifications...........................................................................................................................14

3.1.4 Slot Assignment of the BBU3900.............................................................................................................................14

3.1.5 UMPT........................................................................................................................................................................28

3.1.6 WMPT.......................................................................................................................................................................37

3.1.7 WBBP........................................................................................................................................................................43

3.1.8 GTMU.......................................................................................................................................................................49

3.1.9 LMPT.........................................................................................................................................................................57

3.1.10 LBBP.......................................................................................................................................................................61

3.1.11 FAN.........................................................................................................................................................................68

3.1.12 UPEU.......................................................................................................................................................................70

3.1.13 UEIU........................................................................................................................................................................73

3.1.14 UTRP.......................................................................................................................................................................74

3.1.15 USCU.......................................................................................................................................................................83

3.1.16 UBRI........................................................................................................................................................................86

3.1.17 UELP.......................................................................................................................................................................89

3.1.18 UFLP.......................................................................................................................................................................90

3.2 RRU..............................................................................................................................................................................92

3.3 GPS Surge Protector.....................................................................................................................................................92

4 BTS3900C Power System............................................................................................................94

4.1 Configurations of Upper-Level Circuit Breakers and Power Cables...........................................................................95

4.2 Power Distribution for the BTS3900C.........................................................................................................................95

4.3 ETP48100-A1...............................................................................................................................................................97

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4.3.1 ETP48100-A1 Components.......................................................................................................................................97

4.3.2 ETP48100-A1 Subrack..............................................................................................................................................98

4.3.3 PMU 11A...................................................................................................................................................................99

4.3.4 PSU..........................................................................................................................................................................101

4.4 PDU10D-01................................................................................................................................................................103

4.5 AC Surge Protection Box...........................................................................................................................................106

5 BTS3900C Monitoring System................................................................................................108

5.1 Principles for Monitoring a BTS3900C Cabinet........................................................................................................109

5.2 BBU Monitoring Port.................................................................................................................................................109

5.3 Monitoring Boards......................................................................................................................................................110

5.3.1 HEUB......................................................................................................................................................................111

5.3.2 PMU 11A.................................................................................................................................................................112

6 BTS3900C Components............................................................................................................116

6.1 Fan Assembly.............................................................................................................................................................117

6.2 ELU............................................................................................................................................................................117

6.3 BTS3900C Sensors.....................................................................................................................................................118

6.3.1 Door Status Sensor..................................................................................................................................................118

6.3.2 Temperature Sensor.................................................................................................................................................119

7 BTS3900C Cables.......................................................................................................................120

7.1 List of BTS3900C Cables...........................................................................................................................................122

7.2 Cable Outlets in a BTS3900C Cabinet.......................................................................................................................128

7.3 BTS3900C Cable Connections...................................................................................................................................130

7.3.1 Power Cable Connections........................................................................................................................................130

7.3.2 Transmission Cable Connections............................................................................................................................132

7.3.3 Monitoring Signal Cable Connections....................................................................................................................141

7.3.4 CPRI Cable Connections.........................................................................................................................................143

7.4 PGND Cables.............................................................................................................................................................146

7.5 Power Cables..............................................................................................................................................................147

7.5.1 DC Input Power Cable.............................................................................................................................................147

7.5.2 AC Input Power Cable.............................................................................................................................................148

7.5.3 ETP48100-A1 Power Cable....................................................................................................................................149

7.5.4 PDU10D-01 Power Cable.......................................................................................................................................149

7.5.5 BBU Power Cable...................................................................................................................................................150

7.5.6 HEUB Power Cable.................................................................................................................................................151

7.5.7 RRU Power Cable...................................................................................................................................................151

7.6 BTS3900C Transmission Cables................................................................................................................................152

7.6.1 E1/T1 Cable.............................................................................................................................................................152

7.6.2 E1/T1 Surge Protection Transfer Cable...................................................................................................................155

7.6.3 FE/GE Ethernet Cable.............................................................................................................................................157

7.6.4 FE Surge Protection Transfer Cable........................................................................................................................158

7.6.5 Interconnection Cable Between the FE Electrical Ports..........................................................................................159

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7.6.6 Interconnection Cable Between FE Optical Ports...................................................................................................159

7.6.7 FE/GE Fiber Optic Cable........................................................................................................................................160

7.7 CPRI Fiber Optic Cable..............................................................................................................................................161

7.8 BTS3900C Signal Cables...........................................................................................................................................164

7.8.1 Monitoring Signal Cable for the Fan Assembly......................................................................................................164

7.8.2 Temperature monitoring signal cable......................................................................................................................165

7.8.3 PMU 11A Monitoring Signal Cable........................................................................................................................165

7.8.4 HEUB-BBU Monitoring Signal Cable....................................................................................................................166

7.8.5 BBU Alarm Cable...................................................................................................................................................167

7.8.6 ELU Signal Cable....................................................................................................................................................169

7.8.7 Monitoring Signal Cable for the Door Status Sensor..............................................................................................170

7.8.8 Monitoring Signal Cable for the Surge Protection Box..........................................................................................170

7.8.9 GPS Clock Signal Cable..........................................................................................................................................170

7.8.10 Adapter Used for Local Maintenance....................................................................................................................171

7.9 RRU RF Jumper.........................................................................................................................................................172

7.10 RRU AISG Multi-Wire Cable..................................................................................................................................172

7.11 RRU AISG Extension Cable....................................................................................................................................174

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BTS3900C (Ver.C) Hardware Description 1 Changes In BTS3900C (Ver.C) Hardware Description

1 Changes In BTS3900C (Ver.C) Hardware

Description

This chapter describes the changes in the BTS3900C (Ver.C) Hardware Description.

03 (2013-05-27)

02 (2012-12-30)

This is the third commercial release.

Compared with issue 02 (2012-12-30), no topic is added or deleted.

Compared with issue 02 (2012-12-30), this issue incorporates the following changes:

Topic

l 3.1.6 WMPT

l 3.1.5 UMPT

l 3.1.9 LMPT

l 3.1.7 WBBP

l 3.1.10 LBBP

7.7 CPRI Fiber Optic Cable Added information about the classification of

This is the second official release.

Change Description

Added specifications of these boards.

CPRI fiber optic cables and the principles for selecting CPRI fiber optic cables.

Compared with issue 01 (2012-11-10), no information is added from this issue.

Compared with issue 01 (2012-11-10), this issue includes the following changes:

Topic

All the sections Changed the description the connector of DC

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Change Description

output terminal of PDU10D-01.

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BTS3900C (Ver.C) Hardware Description 1 Changes In BTS3900C (Ver.C) Hardware Description

Compared with issue 01 (2012-11-10), no information is deleted from this issue.

01 (2012-11-10)

This is the first official release.

Compared with issue Draft A (2012-09-20), this issue includes the following new information:

3.1.3 BBU3900 Technical Specifications

Compared with issue Draft A (2012-09-20), this issue includes the following changes:

Topic Change Description

3.1.5 UMPT Changed the indicator description of the

UMPT.

Compared with issue Draft A (2012-09-20), no information is deleted from this issue.

Draft A (2012-09-20)

This is a draft.

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BTS3900C (Ver.C) Hardware Description 2 BTS3900C Cabinet

2 BTS3900C Cabinet

About This Chapter

This chapter describes the exterior, boards, modules, and configurations of the BTS3900C cabinets, providing reference for planning and deploying the BTS3900C.

2.1 Exterior of the BTS3900C Cabinet

This section describes the exterior of the BTS3900C cabinet.

2.2 Interior of the BTS3900C Cabinet

This section describes the interior and configuration of the BTS3900C AC cabinet and BTS3900C DC cabinet.

2.3 BTS3900C Engineering Specifications

This section describes the BTS3900C engineering specifications. The BTS3900C engineering specifications include input power specifications and equipment specifications.

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2.1 Exterior of the BTS3900C Cabinet

This section describes the exterior of the BTS3900C cabinet.

The BTS3900C cabinet is white and consists of an OMB (Ver.C) cabinet (shortened to OMB

(1)

in this document) and a remote radio unit (RRU) subrack, as shown in Figure 2-1.

Figure 2-1 Exterior of the BTS3900C cabinet

NOTE

(1) OMB: outdoor mini box.

2.2 Interior of the BTS3900C Cabinet

This section describes the interior and configuration of the BTS3900C AC cabinet and BTS3900C DC cabinet.

Interior of the BTS3900C AC Cabinet

Figure 2-2 shows the interior of the BTS3900C AC cabinet, and Table 2-1 describes the

components in the BTS3900C AC cabinet.

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Figure 2-2 Interior of the BTS3900C AC cabinet

Table 2-1 Components in the BTS3900C AC cabinet

No.

Component Optional/

Mandatory

Maximum Quantity in a

Description

Single Cabinet

1 ELU Mandatory 1 The electronic

label unit (ELU) automatically reports the cabinet type.

2 PMU 11A Mandatory 1 The power

monitoring unit 11A (PMU 11A) manages the power system, monitors power distribution, and reports alarms.

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No. Component Optional/

Mandatory

Maximum Quantity in a

Description

Single Cabinet

3 HEUB Mandatory 1 The heat

exchange unit type B (HEUB) provides power for the fan assembly, monitors the status of the fan assembly, collects the cabinet environment monitoring information and power surge protection alarm information, and reports the collected information to the BBU.

PSU (R4850G2)

Mandatory 2 The power

supply unit (PSU) converts 110 V AC or 220 V AC power into -48 V DC power.

BBU3900 Mandatory 1 The BBU3900

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

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No. Component Optional/

Mandatory

Maximum Quantity in a

Description

Single Cabinet

6 Fan assembly Mandatory 2 The fan

assembly dissipates heat from the cabinet, including outer air circulation fan assembly and inner air circulation fan assembly. Two fan assemblies are separately installed at the left bottom and the left top in the OMB.

PDU10D-01 Mandatory 1 The power

distribution unit 10D-01 (PDU10D-01) provides -48 V DC power for all components in the cabinet.

RRU subrack Mandatory 1 The RRU

subrack houses the RRU.

9 RRU Mandatory 1 The RRU

processes and forwards RF signals between the BBU and antenna system.

10 AC surge

protection box

Mandatory 1 The AC surge

protection box provides surge protection for the input AC power.

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No. Component Optional/

11 ETP48100-A1 Mandatory 1 The embedded

Interior of the BTS3900C DC Cabinet

Figure 2-3 shows the interior of the BTS3900C DC cabinet, and Table 2-2 describes the

components in the BTS3900C DC cabinet.

Figure 2-3 Interior of the BTS3900C DC cabinet

Mandatory

Maximum Quantity in a Single Cabinet

Description

telecommunication power 48100-A1 (ETP48100-A1) system converts AC power into DC power.

Table 2-2 Components in the BTS3900C DC cabinet

No.

1 ELU Mandatory 1 The ELU

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Component Optional/

Mandatory

Maximum Quantity in a Single Cabinet

Description

automatically reports the cabinet type.

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BTS3900C (Ver.C) Hardware Description 2 BTS3900C Cabinet

No. Component Optional/

Mandatory

Maximum Quantity in a

Description

Single Cabinet

2 HEUB Mandatory 1 The HEUB

provides power for the fan assembly, monitors the status of the fan assembly, collects the cabinet environment monitoring information and power surge protection alarm information, and reports the collected information to the BBU.

BBU3900 Mandatory 1 The BBU3900

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

Fan assembly Mandatory 2 The fan

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BTS3900C (Ver.C) Hardware Description 2 BTS3900C Cabinet

No. Component Optional/

Mandatory

5 RRU subrack Mandatory 1 The RRU

6 RRU Mandatory 1 The RRU

7 PDU10D-01 Mandatory 1 The

Maximum Quantity in a Single Cabinet

Description

subrack houses the RRU.

processes and forwards RF signals between the BBU and antenna system.

PDU10D-01 provides -48 V DC power for all components in the cabinet.

2.3 BTS3900C Engineering Specifications

This section describes the BTS3900C engineering specifications. The BTS3900C engineering specifications include input power specifications and equipment specifications.

Input Power Specifications

The BTS3900C supports 110 V AC, 220 V AC, and -48 V DC power supply. When AC power is used, the base station converts AC power into -48 V DC power.

Table 2-3 and Table 2-4 list the input voltage scopes supported by the BTS3900C.

Table 2-3 AC input voltage range

Input Power

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

110 V AC dual-live-wire 100/200 V AC to 120/240 VAC90/180 V AC to 135/270 V

Rated Voltage Permissible Voltage

Range

Table 2-4 DC input voltage range

Input Power

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

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Rated Voltage

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BTS3900C (Ver.C) Hardware Description 2 BTS3900C Cabinet

Equipment Specifications

Table 2-5 lists the equipment specifications of a BTS3900C.

Table 2-5 Equipment specifications of a BTS3900C

Item Specifications

Dimensions (height x width x depth) 600 mm x 420 mm x 430 mm (23.62 in. x

16.54 in. x 16.93 in.)

Weight

BTS3900C AC: ≤ 32 kg (without the BBU and RRU)

BTS3900C DC: ≤ 25 kg (without the BBU and RRU)

RRU subrack: ≤ 4 kg (without the RRU)

NOTE

For details about other engineering specifications of the BTS3900C, see 3900 Series Base Station Technical Description.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

3 BTS3900C Modules

About This Chapter

This chapter describes the modules in the BTS3900C, including the BBU, RRU, and GPS surge protector.

3.1 BBU3900 Components

This section describes the boards and modules of the BBU3900 in terms of their configuration rules, functions, ports, indicators, and DIP switches.

3.2 RRU

This section describes the types of RRUs supported by the BTS3900C.

3.3 GPS Surge Protector

The Global Positioning System (GPS) surge protector protects the satellite receiver from lightning.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

3.1 BBU3900 Components

This section describes the boards and modules of the BBU3900 in terms of their configuration rules, functions, ports, indicators, and DIP switches.

3.1.1 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 (3.39 in. x 17.4 in. x 12.2 in.) (H x W x D), as shown in Figure 3-1.

Figure 3-1 BBU3900

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 3-2.

Figure 3-2 ESN (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 3-3.

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Figure 3-3 ESN (2)

3.1.2 BBU3900 Functions

The BBU3900 is a baseband processing unit. It processes the baseband signals of the base station.

The BBU3900 performs the following functions:

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

l Provides CPRI ports for communication between the BBU and the RFUs.

l Provides USB

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

l Provides an OM channel between the base station and the 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.

NOTE

(1) The security of the USB port is ensured by encryption. The TST port is used for commissioning the base station rather than importing or exporting the base station configuration.

(1)

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

3.1.3 BBU3900 Technical Specifications

This section describes the technical specifications of the BBU, which include capacity, transmission ports, input power specifications, equipment specifications, environment specifications, and surge protection specifications.

For details about technical specifications of a BBU3900, see section "BBU3900 Technical Specifications" in the 3900 Series Base Station Technical Description.

3.1.4 Slot Assignment of the BBU3900

This section describes the slot assignment of the BBU3900 in the following modes: BBU3900 GSM, BBU3900 UMTS, BBU3900 LTE, BBU3900 GSM+UMTS (shortened to GU), BBU3900 GSM+LTE (shortened to GL), and BBU3900 UMTS+LTE (shortened to UL).

Slots in the BBU3900

Slots in the BBU3900 are the same in different scenarios, as shown in Figure 3-4.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Figure 3-4 Slots in the BBU3900

BBU3900 Working in GO Mode

Table 3-1 describes the principles for configuring the boards in the BBU3900 working in GO

mode.

Table 3-1 Principles for configuring the boards in the BBU3900 working in GO mode

Board Optional/

Mandatory

GTMU Mandatory 1 Slots 5 and 6 It is configured

FAN Mandatory 1 Slot 16 It is configured

UPEU Mandatory 2 Slot 18 or 19 A single UPEU

USCU Optional 1 Slot 0 or 1 It is

Maximum Quantity

Installation Slot

Remarks

only in slot 6 (with slots 5 and 6 occupied).

only in slot 16.

is preferentially configured in slot 19.

preferentially configured in slot 1.

The 1 U GPS/ GLONASS receiver is configured in slot 1 (with slots 0 and 1 occupied).

UTRP

UEIU Optional 1 Slot 18 -

UBRI Optional 1 Slot 2 -

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Optional 1 Slot 0 or 4 It is

preferentially configured in slot 4.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Figure 3-5 shows the typical configurations of the BBU3900 working in GO mode.

Figure 3-5 Typical configurations of the BBU3900 working in GO mode

NOTE

UTRP is supported in V100R012 and later versions.

BBU3900 UMTS

Table 3-2 describes the slot assignment principles for the boards in the BBU3900 UMTS.

Table 3-2 Slot assignment principles for the boards in the BBU3900 UMTS

Board

Optional/ Mandatory

Maximum Number

Slot Restriction

WMPT/UMPT Mandatory 2 Slot 6 or 7 A single UMPT

or WMPT is preferentially configured in slot 7.

The UMPT and WMPT cannot be configured simultaneously.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Board Optional/

Mandatory

Maximum Number

Slot Restriction

WBBP Mandatory 6 Slots 0 to 5 It is configured

in slot 3 by default.

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.

The slot assignment principles for the WBBP boards are as follows:

l The WBBPd

or WBBPf is preferentiall y configured in slot 3 or 2. The WBBPf takes precedence over the WBBPd in slot assignment.

l If five or

more WBBPs are required, ensure that a WBBP is installed in each of slots

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Board Optional/

Mandatory

Maximum Number

Slot Restriction

2 and 3. At least one of the WBBPs in slots 2 and 3 is WBBPd or WBBPf.

l If both slots

2 and 3 are occupied by the WBBPa or WBBPb boards, exchange boards to ensure that the WBBPd or WBBPf is configured in slot 3 or 2.

l If the

WBBPf4 is installed in the same BBU as the WBBPf1, WBBPf2, and WBBPf3, the WBBPf4 is preferentiall y installed in slots 2 and 3.

FAN

Mandatory 1 Slot 16 It must be

UPEU Mandatory 2 Slot 18 or 19 A single UPEU

UEIU Optional 1 Slot 18 -

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configured in slot 16.

is preferentially configured in slot 19.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Board Optional/

Mandatory

Maximum Number

Slot Restriction

UTRP Optional 2 Slot 0, 1, 4, 5, or6A single UTRP

is preferentially configured in slot 4. If more UTRPs are required, the UTRP is installed, in descending order of priority, in slot 4, 5, 0, 1, or 6.

If several UTRPs are configured, the priority of them as following: UTRPc, UTRP6, UTRP9, UTRP2, UTRP3/UTRP4

USCU

Optional 1 Slot 1 or 0 It is

Figure 3-6 shows the typical configurations of the BBU3900 UMTS.

Figure 3-6 Typical configuration of the BBU3900 UMTS

preferentially configured in slot 1.

When configured with two satellite cards, it is configured in slot 1 (with both slots 0 and 1 occupied).

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

BBU3900 LTE

Table 3-3 describes the slot assignment principles for the boards in the BBU3900 LTE.

Table 3-3 Slot assignment principles for the boards in the BBU3900 LTE

Board Optional/

Mandatory

LMPT/UMPT Mandatory 2 Slot 6 or 7 A single LMPT

LBBP

Mandatory 6 Slots 0 to 5 A single LBBP

Maximum Number

Slot Restriction

or UMPT is preferentially configured in slot 7.

The UMPT and WMPT cannot be configured simultaneously.

is preferentially configured in slot 3.

If more LBBPs are required, the LBBP is installed, in descending order of priority, in slot 3, 1, 2, 0, 4, or 5.

FAN

UPEU Mandatory 2 Slot 18 or 19 A single UPEU

UEIU Optional 1 Slot 18 -

UTRP Optional 1 Slot 4 or 5 It is

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Mandatory 1 Slot 16 It is configured

only in slot 16.

is preferentially configured in slot 19.

preferentially configured in slot 4.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Board Optional/

Mandatory

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

Maximum Number

Slot Restriction

is preferentially configured in slot 5. A USCU that occupies 1 U space is configured in slot 5 (with both slots 5 and 4 occupied).

If slots 4 and 5 are occupied, a USCU is preferentially configured in slot 1, or a USCU that uses a dual-satellite card is configured in slot 1, with both slots 1 and 0 occupied.

BBU3900 GU

Figure 3-7 shows the typical configurations of the BBU3900 LTE.

Figure 3-7 Typical configuration of the BBU3900 LTE

Table 3-4 describes the slot assignment principles for the boards in the BBU3900 GU.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Table 3-4 Slot assignment principles for the boards in the BBU3900 GU

Board Optional/

Mandatory

Maximum Number

Slot Restriction

WMPT/UMPT Mandatory 1 Slot 7 The WMPT or

UMPT is configured only in slot 7.

The UMPT and WMPT cannot be configured simultaneously.

GTMU

Mandatory 1 Slots 5 and 6 It is configured

only in slot 6 (with slots 5 and 6 occupied).

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Board Optional/

Mandatory

Maximum Number

Slot Restriction

WBBP Mandatory 5 Slots 0 to 4 It is configured

in slot 3 by default.

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, or 4.

If a WBBPd or WBBPf is required, it is installed, in descending order of priority, in slot 3 or 2.

If five or more WBBPs are required, ensure that a WBBP is installed in each of slots 2 and 3. At least one of the WBBPs in slots 2 and 3 is WBBPd or WBBPf.

The WBBPf takes precedence over the WBBPd during slot assignment.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Board Optional/

Mandatory

FAN Mandatory 1 Slot 16 It is configured

UPEU Mandatory 2 Slot 18 or 19 A single UPEU

UEIU Optional 1 Slot 18 -

UTRP Optional 2 Slot 0 or 4 It is

Maximum Number

Slot Restriction

only in slot 16.

is preferentially configured in slot 19.

preferentially configured in slot 4.

The UTRP in GSM mode takes precedence over the UTRP in UMTS mode during slot assignment.

USCU

UBRI Optional 1 Slot 2 -

Figure 3-8 shows the typical configurations of the BBU3900 GU.

Figure 3-8 Typical configuration of the BBU3900 GU

Optional 1 Slot 0, 1, or 4 It is

preferentially configured in slot 4.

BBU3900 GL

Table 3-5 describes the slot assignment principles for the boards in the BBU3900 GL.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Table 3-5 Slot assignment principles for the boards in the BBU3900 GL

Board Optional/

Mandatory

Maximum Number

Slot Restriction

LMPT/UMPT Mandatory 1 Slot 7 It is configured

only in slot 7.

The UMPT and WMPT cannot be configured simultaneously.

GTMU

Mandatory 1 Slots 5 and 6 It is configured

only in slot 6 (with slots 5 and 6 occupied).

LBBP Mandatory 5 Slots 0 to 4 A single LBBP

is preferentially configured in slot 3.

If more LBBPs are required, the LBBP is installed, in descending order of priority, in slot 3, 1, 2, 0, or 4.

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.

UEIU Optional 1 Slot 18 -

UTRP Optional 2 Slot 0 or 4 It is

preferentially configured in slot 4.

The UTRP in GSM mode takes precedence over the UTRP in LTE mode during slot assignment.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Board Optional/

Mandatory

USCU Optional 1 Slot 0, 1, or 4 It is

UBRI Optional 1 Slot 2 -

Figure 3-9 shows the typical configurations of the BBU3900 GL.

Figure 3-9 Typical configuration of the BBU3900 GL

Maximum Number

Slot Restriction

preferentially configured in slot 4.

BBU3900 UL

Table 3-6 describes the slot assignment principles for the boards in the BBU3900 UL.

Table 3-6 Slot assignment principles for the boards in the BBU3900 UL

Board

LMPT/UMPT Mandatory 1 Slot 6 It is configured

WMPT/UMPT Mandatory 1 Slot 7 It is configured

LBBP Mandatory 5 Slot 0, 1, 2, 4, or5A single LBBP

Optional/ Mandatory

Maximum Number

Slot Restriction

only in slot 6.

only in slot 7.

is configured only in slot 2. If more LBBPs are required, the LBBP is installed, in descending order of priority, in slot 2, 1, 0, 4, or 5.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Board Optional/

Mandatory

Maximum Number

Slot Restriction

WBBP Mandatory 5 Slot 0, 1, 3, 4, or5A single WBBP

is configured only in slot 3. If more WBBPs are required, the WBBP is installed, in descending order of priority, in slot 3, 0, 1, 4, or 5.

If a WBBPd or WBBPf is required, it is configured only in slot 3.

The WBBP, which provides a maximum of six CPRI ports, is configured in either slot 2 or slot 3.

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.

UEIU Optional 1 Slot 18 -

UTRP Optional 2 Slot 4 or 5 It is

preferentially configured in slot 4.

The UTRP in UMTS mode takes precedence over the UTRP in LTE mode during slot assignment.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Board Optional/

Mandatory

USCU Optional 1 Slot 4 or 5 It is

Figure 3-10 shows the typical configurations of the BBU3900 UL.

Figure 3-10 Typical configuration of the BBU3900 UL

Maximum Number

Slot Restriction

preferentially configured in slot 4.

3.1.5 UMPT

The universal main processing and transmission unit (UMPT) processes signals and manages resources on other boards in the BBU3900.

NOTE

UMPTb1 is supported in NodeB V200R014C00SPC370 and later versions.

Specifications of the UMPT

The UMPT is classified into four types: UMPTa1, UMPTb1, UMPTa2, and UMPTa6. Table

3-7 lists the specifications of the UMPTa1, UMPTb1, UMPTa2, and UMPTa6.

Table 3-7 Specifications of the UMPT

Board

UMPTa1/ UMPTb1

Applicable Mode

UMTS ATM over

Transmissi on Mode

E1/T1 or IP over E1/T1

Number of ports

1 Four

Port Capacity

channels

Full/HalfDuplex

Transmissio n over FE/ GE electrical ports

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1 10 Mbit/s,

Full-duplex 100 Mbit/s, or 1000 Mbit/s

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Board Applicable

Mode

Transmissi on Mode

Transmissio n over FE/

Number of ports

Port Capacity

1 100 Mbit/s or

1000 Mbit/s

Full/Half-

Duplex

Full- or half-

duplex

GE optical ports

UMPTa2/ UMPTa6

LTE IP over E1/T11 Four

channels

Transmissio n over FE/ GE electrical ports

Transmissio n over FE/

1 10 Mbit/s,

100 Mbit/s, or 1000 Mbit/s

1 100 Mbit/s or

1000 Mbit/s

Full-duplex

Full- or half-

duplex

GE optical ports

The following table describes the signaling specifications of the UMPTa2, or UMPTa6 working in LTE mode.

Table 3-8 Signaling specifications

Board

Signaling Specifications (CAPS)

UMPTa2/UMPTa6 120

The following table describes the data radio bearer (DRB) specifications and maximum number of users supported by the UMPTa2, or UMPTa6 working in LTE mode.

Table 3-9 Data radio bearer specifications

Board

Maximum Number of Users

UMPTa2/UMPTa6 10800

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

NOTE

For the signaling specifications of an entire eNodeB or NodeB, see section "Signaling Specifications" in 3900 Series Base Station Technical Description. For the maximum number of DRBs and UEs in RRC_Connected mode, see section "Baseband Specifications" in 3900 Series Base Station Technical Description.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Panel

Figure 3-11, Figure 3-13, Figure 3-12 and Figure 3-14 show the panels of the UMPT boards.

Figure 3-11 UMPTa1 Panel

Figure 3-12 UMPTb1 Panel

Figure 3-13 UMPTa2 Panel

Figure 3-14 UMPTa6 Panel

NOTE

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

Functions

The UMPT performs the following functions:

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

l Performs configuration management, device management, performance monitoring,

signaling message processing, and active/standby switchover.

l Controls all boards in the system.

l Provides the reference clock for the entire system.

l Implements transmission and provides absolute time and 1 pulse per second (PPS) reference

clock source while being equipped with a single satellite card.

l Provides four E1 ports and two FE/GE ports to implement basic transmission in compliance

with Asynchronous Transfer Mode (ATM), Internet Protocol (IP), and Point-to-Point Protocol (PPP) during the initial configuration.

Ports

Table 3-10 describes the ports on the UMPT.

Table 3-10 Ports on the UMPT

Silkscreen Connector Description

FE/GE1 SFP female

connector

A 100 Mbit/s or 1000 Mbit/s adaptive Ethernet optical port is used for transmitting service data and signaling messages.

FE/GE0 RJ45 connector A 10 Mbit/s, 100 Mbit/s, or 1000 Mbit/s adaptive

Ethernet electrical port is used for transmitting service data and signaling messages.

USB

(1)

USB connector The USB port with the USB silkscreen is used for

the software upgrade of a base station using a USB flash driver. This port also functions as a

commissioning Ethernet port

(2)

The USB port with the CLK silkscreen functions as the TOD clock or test clock port.

E1/T1

DB26 female connector

The port is used for four E1/T1 signal inputs and outputs between the UMPT and universal E1/T1 lightning protection unit (UELP) or between base station controllers.

GPS SMA connector The GPS port on the UMPTa1, UMPTb1, or

UMPTa2 is reserved.

The GPS port on the UMPTa6 is used for transmitting radio frequency (RF) signals received from the antenna to the satellite card.

CI SFP female

The port is used for BBU interconnection.

connector

RST - The port is used to reset the board.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

NOTE

(1) The security of the USB port is ensured by encryption.

(2) When the USB port functions as a commissioning Ethernet port, ensure that an OM port has been opened and the user has obtained required authorities for accessing the base station through the OM port before accessing the base station through the USB port.

Indicators

Table 3-11 describes the indicators on the UMPT.

Table 3-11 Indicators on the UMPT

Silkscreen 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 for1sThe board is

functioning properly.

On for 0.125s and off for 0.125s

l The board is

being loaded or configured.

l The board is not

started.

ALM Red Steady on An alarm is

generated, and the board needs to be replaced.

Steady off The board is running

properly.

On for 1s and off for1sAn alarm is

generated, and you need to locate the fault before deciding whether to replace the board.

ACT Green Steady on The board serves as

an active board.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Silkscreen Color Status Description

Steady off

l The board does

not serve as an active board.

l The board has not

been activated.

l The board is not

providing any services.

On for 0.125s and off for 0.125s

The operation and maintenance link (OML) is disconnected.

On for 1s and off for1sThe board is being

tested, such as an RRU Voltage Standing Wave Ratio (VSWR) test through

(1)

a USB

NOTE

flash drive.

Of UMPT boards, only the UMPTa1 has this status.

In every 4s, the indicator is on for

0.125s and off for

0.125s (eight times) in the first 2s and then off for 2s.

l All cells

corresponding to the subrack that houses this board are not activated.

l The S1 link is

faulty.

NOTE

Of UMPT boards, only the UMPTa2 and UMPTa6 have this status.

Besides the preceding three indicators, some other indicators indicate the connection status of the FE/GE optical port, FE/GE electrical port, interconnection port, and E1/T1 port. The indicators on the FE/GE optical port, FE/GE electrical port, interconnection port, and E1/T1 port, which have no silkscreen on the boards, are near the corresponding port, as shown in Figure

3-15.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Figure 3-15 Indicators for ports

Table 3-12 describes the indicators.

Table 3-12 Indicators for ports

Indicator/ Silkscreen

LINK (silkscreen for the optical port)

ACT (silkscreen for the optical port)

LINK (silkscreen for the electrical port)

ACT (silkscreen for the electrical port)

Color Status Definition

Green Steady on The connection is

normal.

Steady off The connection is

abnormal.

Orange Blinking Data is being

transmitted.

Steady off No data is being

transmitted.

Green Steady on The connection is

normal.

Steady off The connection is

abnormal.

Orange Blinking Data is being

transmitted.

Steady off No data is being

transmitted.

CI Red or green Steady green The interconnection

Steady red An optical module

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link is normal.

fails to receive signals because of one of the following reasons:

l The optical

module is faulty.

l The optical cable

is broken.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Indicator/ Silkscreen

Color Status Definition

Blinking red (on for

0.125s and off for

0.125s)

Cables are connected in one of following incorrect manners:

l In the UCIU

+UMPT scenario, the S0 port on the UCIU is connected to the CI port on the UMPT. Indicators for the S0 and CI ports are blinking.

l The ports are

connected in ring topology. Indicators for all incorrectly connected ports are blinking.

Steady off

The optical module cannot be detected.

R0, R1, R2 Red or green - Reserved

L01 Red or green Steady off E1/T1 link 0 and 1 is

not set up, or an LOS alarm is generated.

Steady green E1/T1 links 0 and 1

are working properly.

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

E1/T1 link 0 is working properly, but E1/T1 link 1 is not set up or an LOS alarm is generated.

Blinking green (on for 0.125s and off for

0.125s)

E1/T1 link 1 is working properly, but E1/T1 link 0 is not set up or an LOS alarm is generated.

Steady red Alarms are generated

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on E1/T1 links 0 and

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Indicator/ Silkscreen

L23 Red or green Steady off E1/T1 link 2 and 3 is

Color Status Definition

Blinking red (on for 1s and off for 1s)

Blinking red (on for

0.125s and off for

0.125s)

Steady green E1/T1 links 2 and 3

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

An alarm is generated on E1/T1 link 0.

An alarm is generated on E1/T1 link 1.

not set up, or an LOS alarm is generated.

are working properly.

E1/T1 link 2 is working properly, but E1/T1 link 3 is not set up or an LOS alarm is generated.

DIP Switch

Blinking green (on for 0.125s and off for

0.125s)

Steady red Alarms are generated

Blinking red (on for 1s and off for 1s)

Blinking red (on for

0.125s and off for

0.125s)

Two DIP switches on the UMPT are labeled SW1 and SW2. Figure 3-16 shows the positions of DIP switches on the UMPT.

E1/T1 link 3 is working properly, but E1/T1 link 2 is not set up or an LOS alarm is generated.

on E1/T1 links 2 and

An alarm is generated on E1/T1 link 2.

An alarm is generated on E1/T1 link 3.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Figure 3-16 Positions of DIP switches on the UMPT

Each DIP switch has four bits. The DIP switches have the following functions:

l SW1 is used to select the E1/T1 mode. Table 3-13 describes the DIP switch.

l SW2 is used to select the grounding mode of E1/T1 transmission. Table 3-14 describes the

DIP switch.

Table 3-13 DIP switch SW1

DIP Switch

SW1 ON ON Reserved Reserved The E1 resistance is set to

Table 3-14 DIP switch SW2

DIP Switch

SW2 OFF OFF OFF OFF Balanced

DIP Status Description

1 2 3 4

75 ohms.

OFF ON The E1 resistance is set to

120 ohms.

ON OFF The T1 resistance is set to

100 ohms.

DIP Status Description

1 2 3 4

ON ON ON ON Unbalanced

3.1.6 WMPT

The WCDMA main processing and transmission unit (WMPT) processes signals for the BBU3900 and manages resources for other boards in the BBU3900.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Specifications

Table 3-15 lists the WMPT specifications.

Table 3-15 WMPT specifications

Panel

Board Applicable

Mode

WMPT UMTS ATM over

Transmissi on Mode

E1/T1 or IP

Number of ports

Port Capacity

1 Four

channels

Full/Half-

Duplex

Full-duplex

over E1/T1

Transmissio n over FE optical ports

Transmissio n over FE electrical

1 10 Mbit/s

and 100 Mbit/s

1 10 Mbit/s

and 100 Mbit/s

Full-duplex

ports

NOTE

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

Functions

Figure 3-17 shows the panel of the WMPT.

Figure 3-17 WMPT panel

The WMPT performs the following functions:

l Performs functions such as configuration management, equipment management,

performance monitoring, signaling processing, and active and standby switchover, and provides OM channel to communicate with the LMT or M2000.

l Provides a 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.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

l Provides a 4-channel E1/T1 port over ATM or IP.

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

Indicators

Table 3-16 describes the indicators on the WMPT panel.

Table 3-16 Indicators on the WMPT panel

Silkscreen 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 for1sThe board is

functioning properly.

On for 0.125s and off for 0.125s

ALM Red Steady on An alarm is

Steady off The board is running

On for 1s and off for1sAn alarm is

ACT Green Steady on The board serves as

Steady off

l Data or software

is being loaded to the board.

l The board is not

started.

generated, and the board must be replaced.

properly.

generated and you need to locate the fault before deciding whether to replace the board.

an active board.

l The board does

not serve as an active board.

l The board has not

been activated.

l The board is not

providing any services.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Silkscreen Color Status Description

On for 0.125s and off for 0.125s

The operation and maintenance link (OML) is disconnected.

On for 1s and off for1sThe board is being

tested, such as an RRU Voltage Standing Wave Ratio (VSWR) test through

(2)(3)

a USB

flash

drive.

In addition to the preceding three indicators, there are six indicators on the board panel, which indicate the connection status of the FE optical port, FE electrical port, and commissioning Ethernet 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 3-18.

Figure 3-18 Port status indicators on the WMPT panel

Table 3-17 describes the port status indicators on the WMPT panel.

Table 3-17 Port status indicators

Indicator

FE1 optical port status indicators

Color Status Description

Green (LINK on the

Steady on The connection is set

left side)

Steady off No connection is set

Orange (ACT on the

Blinking Data is being

right side)

Steady off No data is being

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up successfully.

up.

transmitted or received.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Indicator Color Status Description

FE0 electrical port status indicators

Green (LINK on the left side)

Orange (ACT on the right side)

ETH port indicators Green (LINK on the

left side)

Orange (ACT on the right side)

Steady on The connection is set

up successfully.

Steady off No connection is set

up.

Blinking Data is being

transmitted or received.

Steady off No data is being

transmitted or received.

Steady on The connection is set

up successfully.

Steady off No connection is set

up.

Blinking Data is being

transmitted or received.

Steady off No data is being

transmitted or received.

Ports

Table 3-18 describes the ports on the WMPT panel.

Table 3-18 Ports on the WMPT panel

Silkscreen

Connector Description

E1/T1 port DB26 female connector E1/T1 port

FE0 RJ45 connector FE electrical port

FE1 SFP female connector FE optical port

GPS SMA connector Reserved

ETH

TST

USB

(1)

(2)

(3)

RJ45 connector Commissioning

USB connector USB commissioning port

USB connector USB loading port

RST - Used for resetting the WMPT

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NOTE

(1) Before accessing the base station through the ETH port, ensure that an OM port has been opened and the user has obtained required authorities for accessing the base station through the OM port.

(2) The TST port is used for commissioning the base station rather than importing or exporting the base station configuration.

(3) The security of the USB port is ensured by encryption.

DIP Switch

The WMPT has two DIP switches: SW1 and SW2. 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 3-19 shows the DIP switch settings of the WMPT.

Figure 3-19 DIP switch settings of the WMPT

Table 3-19 and Table 3-20 list the DIP switch settings of the WMPT.

Table 3-19 Settings of the DIP switch SW1 on the WMPT

DIP

DIP Status Description

Switch

1 2 3 4

SW1 ON ON OFF OFF T1

OFF OFF ON ON The E1

ON ON ON ON The E1

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resistance is set to 120 ohm.

resistance is set to 75 ohm.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

3.1.7 WBBP

DIP

DIP Status Description

Switch

1 2 3 4

Others Unavailable

Table 3-20 Settings of the DIP switch SW2 on the WMPT

DIP

DIP Status Description

Switch

1 2 3 4

SW2 OFF OFF OFF OFF Balanced

ON ON ON ON Imbalanced

Others Unavailable

The WCDMA baseband processing unit (WBBP) in the BBU3900 processes baseband signals.

Specifications

NOTE

WBBPf is supported in NodeB V200R014C00SPC320 and later versions.

The WBBP falls into four types, as listed in Table 3-21.

NOTE

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

Table 3-21 Specifications of the WBBP

Board

Number of Cells

Number of UL CEs Number of DL

Supported

WBBPa 3 128 256

WBBPb1 3 64 64

WBBPb2 3 128 128

WBBPb3 6 256 256

WBBPb4 6 384 384

CEs

WBBPd1 6 192 192

WBBPd2 6 384 384

WBBPd3 6 256 256

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Board Number of Cells

Number of UL CEs Number of DL

Supported

WBBPf1 6 192 256

WBBPf2 6 256 384

WBBPf3 6 384 512

WBBPf4 6 512 768

The following table lists the specifications of the WBBP.

Table 3-22 HSPA specifications

Board Number of

HSDPA Codes

Number of HSDPA UEs

WBBPa 3x15 96 60

WBBPb1 3x15 64 64

WBBPb2 3x15 128 96

WBBPb3 6x15 144 96

CEs

Number of HSUPA UEs

Panel

WBBPb4 6x15 144 96

WBBPd1 6x15 128 96

WBBPd2 6x15 144 144

WBBPd3 6x15 144 96

WBBPf1 6x15 144 144

WBBPf2 6x15 192 192

WBBPf3 6x15 256 256

WBBPf4 6x15 384 384

NOTE

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

The WBBP has four types of panels, as shown in Figure 3-20, Figure 3-21, Figure 3-22, and

Figure 3-23.

Figure 3-20 Panel of the WBBPa

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Figure 3-21 Panel of the WBBPb

Figure 3-22 Panel of the WBBPd

Functions

Figure 3-23 Panel of the WBBPf

NOTE

l The WBBPb1, WBBPb2, WBBPb3, and WBBPb4 have silkscreens WBBPb1, WBBPb2,

WBBPb3, and WBBPb4 indicating their board types on the lower left corner of the board panel,

respectively.

l The WBBPd1, WBBPd2, and WBBPd3 have silkscreens WBBPd1, WBBPd2, and WBBPd3

indicating their board types on the lower left corner of the board panel, respectively.

l The WBBPf1, WBBPf2, WBBPf3, and WBBPf4 have silkscreens WBBPf1, WBBPf2, WBBPf3, and

WBBPf4 indicating their board types on the lower left corner of the board panel, respectively.

The WBBP performs the following functions:

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 When the WBBPd is installed in slot 2 or 3 and is connected to an RF module, the WBBPd

supports the IC of uplink data.

l The WBBPf installed in slot 2 or slot 3 supports the baseband interconnection between

BBUs.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Indicators

There are three indicators on the panel of the WBBP. Table 3-23 describes the indicators on the WBBP and their status.

Table 3-23 Indicators on the panel of the WBBP and their status

Silkscreen 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 functioning

properly.

On for 0.125s and off for

0.125s

l Software or data is being

loaded to the board.

l The board is not started.

ALM Red Steady on An alarm is generated, and the

board must be replaced.

Steady off The board is running properly.

On for 1s and off for 1s An alarm is generated and you

need to locate the fault before deciding whether to replace the board.

ACT Green Steady on The board serves as an active

board.

Steady off

l The board does not serve as

an active board.

l The board has not been

activated.

l The board is not providing

any services.

On for 1s and off for 1s

The WBBPa or WBBPb provides three indicators indicating the status of Small Form-factor Pluggable (SFP) links, and the indicators are below the SFP ports. The WBBPd or WBBPf provides six indicators indicating the status of SFP links, and the indicators are above the SFP ports.

Table 3-24 describes the indicators.

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The power supply for the board is insufficient.

NOTE

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

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Table 3-24 CPRI port status indicators

Silkscreen Color Status Description

CPRIx Red or green Steady green The CPRI link is

functioning properly.

Steady red An optical module

fails to receive or transmit signals because of the following reasons:

l The optical

module is faulty.

l The fiber optic

cable is broken.

Blinking red (on for

0.125s and off for

0.125s)

Blinking red (on for 1s and off for 1s)

The RF module connected to the CPRI link has a hardware fault.

The CPRI link is out of lock because of following reasons:

l There is no mutual

lock between dualmode clock sources.

l There is

mismatched data rate over CPRI ports.

l VSWR alarms are

generated on the RF module connected to the CPRI link when

the USB

(1)

flash drive is used for VSWR test.

Steady off

NOTE

(1) The security of the USB port is ensured by encryption. The TST port is used for commissioning the base station rather than importing or exporting the base station configuration.

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l The optical

module cannot be detected.

l The CPRI cable is

not connected.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

The WBBPf provides an indicator indicating the status of the Quad Small Form-factor Pluggable (QSFP) link, and the indicator is above the QSFP port. Table 3-25 describes this indicator.

Table 3-25 QSFP port status indicators

Silkscreen Color Status Description

HEI Red or green Steady green The inter-BBU

transmission link is functional.

Steady red An optical module

fails to receive or transmit signals because of the following reasons:

l The optical

module is faulty.

l The fiber optic

cable is broken.

Ports

Blinking red (on for 1s and off for 1s)

Steady off

Table 3-26 describes the three CPRI ports on the panel of the WBBPa and WBBPb.

The interconnection link is out of lock because of the following reasons:

l There is no

mutual lock between two interconnected BBUs.

l There is

mismatched data rate over QSFP ports.

The optical module cannot be detected.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Table 3-26 Ports on the WBBPa and WBBPb panels

Silkscreen Connector Description

CPRIx SFP female connector Data transmission port

interconnected to the RF module. It supports the input and output of optical and electrical transmission signals.

Table 3-27 describes the six CPRI ports on the panel of the WBBPd.

Table 3-27 Ports on the WBBPd panel

Silkscreen Connector Description

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

The WBBPf provides six CPRI ports and one HEI port, as listed in Table 3-28.

Table 3-28 Ports on the WBBPf panel

Silkscreen

CPRIx SFP female connector Data transmission port

HEI QSFP connector Port interconnected to other

SFP female connector Data transmission port

interconnected to the RF module. It supports the input and output of optical and electrical transmission signals.

Connector Description

interconnected to the RF module. It supports the input and output of optical and electrical transmission signals.

baseband boards to share the baseband resources.

3.1.8 GTMU

The GSM transmission and timing and management unit (GTMU) is the basic transmission and control function entity of the BBU. It provides the reference clock, maintenance port, and external alarm collection port, monitors the power, controls and manages the entire BTS.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Specifications

The GTMU is classified into two types: GTMU and GTMUb. Table 3-29 lists the transmission specifications of the GTMU and GTMUb.

Table 3-29 Transmission specifications of the GTMU

Board Supported

Mode

GTMU/ GTMUb

Table 3-30 lists the TRX specifications of the GTMU and GTMUb.

Table 3-30 TRX specifications of the GTMU

Board

GSM TDM over

Supported Mode Transmission

Transmissi on Mode

E1/T1

Transmissio n over FE optical ports

Transmissio n over FE electrical ports

Number of ports

1 Four

1 10 Mbit/s

Mode

Port Capacity

channels

and 100 Mbit/s

Full/HalfDuplex

Full-duplex

Maximum Carrier Number

Panel

GTMU/GTMUb GSM TDM 126

IP over FE 60

IP over E1 48

Figure 3-24 and Figure 3-25 show the panels of the GTMU and GTMUb.

Figure 3-24 GTMU panel

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Figure 3-25 GTMUb 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.

Indicators

l Monitors the fans and power modules.

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

l Provides the clock output for test.

l Provides a port for maintenance on the OM system.

l Supports the transmission of four paths of E1 signals and two paths of FE signals.

l Provides CPRI ports for communication between the BBU and the RFUs.

Table 3-31 describes the indicators on the GTMU.

Table 3-31 Indicators on the GTMU

Silkscreen

RUN Green Steady on There is power supply, but the

Color Status Description

board is faulty.

Steady off There is no power supply, or the

board is faulty.

On for 1s and off for1sThe board is running properly.

On for 0.125s and off for 0.125s

ALM Red Steady on An alarm is generated, and the

Steady off There is no fault.

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Software is being loaded to the board.

board must be replaced.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Silkscreen Color Status Description

On for 1s and off for1sAn alarm is generated and you

need to locate the fault before deciding whether to replace the board.

ACT Green Steady on The board serves as an active

board.

On for 0.125s and off

The OML is disconnected.

for 0.125s

Besides the preceding three indicators, there are some other indicators on the board, indicating the connection status of the FE optical port, FE electrical port, CPRI port, and commissioning port. They are near the corresponding ports and have no silkscreen. Table 3-32 describes the indicators.

Table 3-32 Indicators for ports

Indicator Color Status Description

LIU0 to LIU3 Green Steady on An E1/T1 local alarm

is generated.

On for 1s and off for1sAn E1/T1 remote

alarm is generated.

Steady off The link is

functional.

CPRI0 to CPRI5 Red or green Steady green The CPRI link is

functioning properly.

Steady red An optical module

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fails to receive or transmit signals because of the following reasons:

l The optical

module is faulty.

l The fiber optic

cable is broken.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Indicator Color Status Description

ETH Green (LINK

indicator on the left side)

Blinking red (on for 1s and off for 1s)

The CPRI link is out of lock because of the following reasons:

l There is no

mutual lock between dualmode clock sources.

l There is

mismatched data rate over CPRI ports.

Steady off

l The optical

module cannot be detected.

l The CPRI cable is

not connected.

Steady on The connection is set

up successfully.

Steady off No connection is set

up.

Orange (ACT indicator on the right side)

FE0 Green (LINK

indicator on the left side)

Orange (ACT indicator on the right side)

FE1 (on the GTMUb)

Green (LINK indicator on the left side)

Blinking Data is being

transmitted or received.

Steady off No data is being

transmitted or received.

Steady on The connection is set

up successfully.

Steady off No connection is set

up.

Blinking Data is being

transmitted or received.

Steady off No data is being

transmitted or received.

Steady on The connection is set

up successfully.

Steady off No connection is set

up.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Indicator Color Status Description

Ports

Green (ACT indicator on the right side)

M_S (on the

- - This is the indicator

GTMUb)

EXT (on the

- - This is the indicator

GTMUb)

Table 3-33 describes the ports on the GTMU.

Table 3-33 Ports on the GTMU

Silkscreen

Connector Description

CPRI0 to CPRI5 SFP female

connector

Blinking Data is being

transmitted or received.

Steady off No data is being

transmitted or received.

for the reserved port.

Data transmission port interconnected to the RF module. It supports the input and output of optical and electrical transmission signals.

EXT (on the GTMUb)

(1)

ETH

SFP female

Reserved

connector

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 fiber optic cables to transmit network information

TST

USB

(2)

(3)

USB connector Providing reference clock for the test instruments

USB connector Used for automatic software upgrade through the

USB flash drive

E1/T1 DB26 female

connector

Used for four E1/T1 inputs and outputs between the GTMU and the UELP or between BSCs

RST - Used for resetting the GTMU

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

NOTE

(1) Before accessing the base station through the ETH port, ensure that an OM port has been opened and the user has obtained required authorities for accessing the base station through the OM port.

(2) The TST port is used for commissioning the base station rather than importing or exporting the base station configuration.

(3) The security of the USB port is ensured by encryption.

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

Table 3-34 Specifications of the GTMU ports

DIP Switch

Board Number of CPRI

Ports

CPRI Data Rate (Gbit/s)

Topo Type

GTMU 6 1.25 Topologies of star,

chain, and ring

GTMUb 6 1.25/2.5 Topologies of star,

chain, and ring

On the GTMU, there are five DIP switches, each of which has four bits. DIP switches S1 and S2 need to be set jointly. The functions of the five DIP switches are as follows:

l S1 is used to select the E1 resistance. Table 3-35 provides details on the DIP switch.

l S2 is used to select the grounding mode of E1/T1 transmission cables. Table 3-36 provides

details on the DIP switch.

l S3 is reserved.

l S4 is used to select the E1 bypass. Table 3-37 provides details on the DIP switch.

l S5 is used for timeslot settings when the E1 bypass is selected. Table 3-38 provides details

on the DIP switch.

Table 3-35 Description on S1

DIP

DIP Setting Description

Switch

1 2 3 4

S1 ON ON OFF OFF The E1 resistance is set to

OFF ON OFF OFF The E1 resistance is set to

ON OFF OFF OFF The T1 resistance is set to

Others Unavailable

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75 ohm.

120 ohm.

100 ohm.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

NOTE

Bits 3 and 4 of S1 should be kept the factory-delivered configuration, without any manual setting on site. The out-of-factory state should be OFF. If the bits are ON, set them to OFF.

Table 3-36 Description on S2

DIP

DIP Setting Description

Switch

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 error codes are

received over the four E1 RX links in 75 ohm, all the bits of S2 must be set to ON to rectify the faults on the E1 links.

Others

Unavailable

Table 3-37 Description on S4

DIP

DIP Setting Description

Switch

1 2 3 4

S4 ON ON ON ON Supporting E1 bypass

OFF OFF OFF OFF Not supporting E1

bypass

Others Unavailable

Table 3-38 Description on S5

DIP

DIP Setting Description

Switch

1 2 3 4

S5 ON ON ON ON Not supporting E1

bypass

OFF ON ON OFF Supporting E1 bypass

of level-1 cascaded base stations

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

3.1.9 LMPT

DIP Switch

The LTE main processing and transmission unit (LMPT) manages the entire eNodeB system in terms of OM and signaling processing and provides system clock for the BBU3900.

DIP Setting Description

1 2 3 4

ON OFF ON OFF Supporting E1 bypass

of level-2 cascaded base stations

OFF OFF ON OFF Supporting E1 bypass

of level-3 cascaded BTSs

ON ON OFF OFF Supporting E1 bypass

of level-4 cascaded BTSs

OFF ON OFF OFF Supporting E1 bypass

of level-5 cascaded BTSs

Specifications

Table 3-39 lists the specifications of the LMPT.

Table 3-39 Specifications of the LMPT

Board

LMPT LTE Transmissio

The following table lists the signaling specifications of the LMPT.

Mode Transmissi

on Mode

n over FE/ GE optical ports

Transmissio n over FE/ GE electrical ports

Number of ports

2 10 Mbit/s,

Port Capacity

100 Mbit/s, and 1000 Mbit/s

Full/HalfDuplex

Full-duplex

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Table 3-40 Signaling specifications of the LMPT

Board Signaling Specification (CAPS)

LMPT 30

The following table lists the maximum number of UEs in RRC_Connected mode supported by the LMPT.

Table 3-41 Maximum number of UEs in RRC_Connected mode

Board Maximum Number of UEs in

RRC_Connected Mode

LMPT 5400

Panel

Functions

The maximum of data radio bearers (DRBs) supported by the LMPT is three times the maximum number of UEs in RRC_Connected mode.

NOTE

For the signaling specifications of an entire eNodeB, see section "Signaling Specifications" in 3900 Series Base Station Technical Description. For the maximum number of DRBs and UEs in RRC_Connected mode, see section "Baseband Specifications" in 3900 Series Base Station Technical Description.

Figure 3-26 shows the LMPT.

Figure 3-26 LMPT

The LMPT performs the following functions:

l Enables configuration management, device management, performance monitoring,

signaling processing, and radio source management

l Controls all boards in the system

l Provides the system clock

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

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Indicators

There are three indicators on the LMPT panel. Table 3-42 describes the indicators on the LMPT panel and their status.

Table 3-42 Indicators on the LMPT panel

Silkscreen 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

On for 0.125s and off for 0.125s

ALM Red Steady on An alarm is generated, and

Steady off The board is running

On for 1s and off for 1s

ACT Green Steady on The board serves as an

Steady off

The board is functioning properly.

l Software or data is being

loaded to the board.

l The board is not started.

the board needs to be replaced.

properly.

An alarm is generated and you need to locate the fault before deciding whether to replace the board.

active board.

l The board does not

serve as an active board.

l The board has not been

activated.

l The board is not

providing any services.

On for 0.125s and off for 0.125s

In every 4s, the indicator is on for

0.125s and off for

0.125s (eight times) in the first 2s and then off for 2s.

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The OML is disconnected.

l All cells corresponding

to the subrack that houses this board are not activated.

l The S1 link is faulty.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Besides the preceding three indicators, some other indicators used for indicating the connection status of the FE optical port, FE electrical port, and commissioning Ethernet port have no silkscreen on the board. They are near the ports. Table 3-43 describes the indicators.

Table 3-43 Indicators

Silkscreen Color Status Description

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

up successfully.

Steady off No connection is set

up.

Orange (ACT) Blinking Data is being

transmitted or received.

Steady off No data is being

transmitted or received.

ETH Orange (ACT) Blinking Data is being

transmitted or received.

Steady off No data is being

transmitted or received.

Green (LINK) Steady on The connection is set

up successfully.

Steady off No connection is set

up.

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

up successfully.

Steady off No connection is set

up.

Orange (ACT) Blinking Data is being

transmitted or received.

Steady off No data is being

transmitted or received.

Ports

Table 3-44 describes the ports on the panel of the LMPT.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Table 3-44 Ports on the panel of the LMPT

Silkscreen Connector Quantity Description

SFP0 and SFP1 SFP female

connector

2 FE/GE optical port

connecting to the transmission equipment or gateway equipment

ETH

TST

USB

(1)

(2)

(3)

RJ45 connector 1 Commissioning

USB connector 1 Test port

USB connector 1 Software loading

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

RST - 1 Used for resetting the

LMPT

3.1.10 LBBP

Specifications

NOTE

(1) Before accessing the base station through the ETH port, ensure that an OM port has been opened and the user has obtained required authorities for accessing the base station through the OM port.

(2) The TST port is used for commissioning the base station rather than importing or exporting the base station configuration.

(3) The security of the USB port is ensured by encryption.

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 cannot be used simultaneously.

The LTE baseband processing unit (LBBP) in the BBU3900 processes baseband signals.

The following table lists the signaling specifications of the LBBP.

Table 3-45 Signaling specifications of the LBBP

Board

Signaling Specification (CAPS)

LBBPc 30

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Board Signaling Specification (CAPS)

LBBPd1/LBBPd2/LBBPd3 60

The following table lists the maximum RRC_connected users supported by the LBBP.

Table 3-46 Maximum RRC_connected users

Board Cell Bandwidth Maximum RRC_Connected

Users

LBBPc 1.4 MHz 1008

3 MHz 1800

5 MHz 1800

10 MHz 1800

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

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

LBBPd1/LBBPd2 1.4 MHz 504

3 MHz 1080

5 MHz 1800

10 MHz 3600

15 MHz 3600

20 MHz 3600

LBBPd3 1.4 MHz 1008

3 MHz 2160

5 MHz 3600

10 MHz 3600

15 MHz 3600

20 MHz 3600

The maximum number of data radio bearers (DRBs) supported by the LBBP is three times the maximum RRC_connected users.

NOTE

For the signaling specifications of an entire eNodeB, see section "Signaling Specifications" in 3900 Series Base Station Technical Description. For the following specifications, see section "Baseband

Specifications" in 3900 Series Base Station Technical Description: the maximum number of data radio bearers, maximum RRC_connected users per cell, maximum RRC_connected users supported by an entire base station, and maximum uplink and downlink throughput per cell or user.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

The following table lists the maximum throughput of the LBBP.

Table 3-47 Maximum throughput of the LBBP

Board Maximum Throughout

LBBPc

l Downlink: 300 Mbit/s

l Uplink: 100 Mbit/s

LBBPd1

l Downlink: 450 Mbit/s

l Uplink: 225 Mbit/s

LBBPd2

l Downlink: 600 Mbit/s

l Uplink: 225 Mbit/s

LBBPd3

l Downlink: 600 Mbit/s

l Uplink: 300 Mbit/s

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

Table 3-48 Specifications of the LBBP in LTE FDD scenarios

Board

Number of

Cell Bandwidth Antenna Configuration

Cell

LBBPc 3 1.4 MHz, 3 MHz, 5 MHz, 10

MHz, 15 MHz, and 20 MHz

3x20 MHz 1T1R

3x20 MHz 1T2R

3x10 MHz 4T4R

3x20 MHz 2T2R

1x20 MHz 4T4R

LBBPd1

3 1.4 MHz, 3 MHz, 5 MHz, 10

MHz, 15 MHz, and 20 MHz

LBBPd2 3 1.4 MHz, 3 MHz, 5 MHz, 10

MHz, 15 MHz, and 20 MHz

LBBPd3 6 1.4 MHz, 3 MHz, 5 MHz, 10

MHz, 15 MHz, and 20 MHz

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

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3x20 MHz 1T1R

3x20 MHz 1T2R

3x20 MHz 2T2R

3x20 MHz 1T1R

3x20 MHz 1T2R

3x20 MHz 2T2R

3x20 MHz 4T4R

6x10M 1T1R

6x10M 1T2R

6x10M 2T2R

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Table 3-49 Specifications of the LBBP in LTE TDD scenarios

Board Number of

Cell Bandwidth Antenna Configuration

Cell

LBBPc 3 5 MHz, 10 MHz, and 20 MHz 3x20 MHz 1T1R

3x20 MHz 1T2R

3x20 MHz 2T2R

3x10 MHz 4T4R

1x20 MHz 8T8R

LBBPd2

3 5 MHz, 10 MHz, and 20 MHz 3x20 MHz 1T1R

3x20 MHz 1T2R

3x20 MHz 2T2R

3x20 MHz 4T4R

NOTE

l The "Antenna Configuration" column lists the maximum configurations supported by various types of

LBBP. 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, and 3x5 MHz 4T4R.

l Boards with the same antenna configuration support combinations of different bandwidth as long as

the total bandwidth does not exceed the maximum bandwidth supported by the board. For example, if an LBBPc supports the 3x20 MHz 2T2R antenna configuration, the three cells connected to the LBBPc can use any of the following antenna configurations: 1.4 MHz 2T2R, 3 MHz 2T2R, 5 MHz 2T2R, 10 MHz 2T2R, 15 MHz 2T2R, and 20 MHz 2T2R.

l The LBBP supports CPRI convergence when the site is configured with any of the following RRUs:

RRU3221, RRU3240, RRU3828, RRU3829, RRU3928, RRU3929, LRFUe, MRFUd, RRU3229, RRU3841, RRU3942, RRU3642, RRU3832, RRU3838, and RRU3268. The CPRI convergence of the LBBP must comply with the following principles:

l In LBBPc+LBBPc CPRI convergence mode, the CPRI convergence is allowed only between two

LBBPc 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 multiple

LBBPc boards to one LBBPd board, and only the CPRI ports on the LBBPd in slot 2 or 3 can connect to RF units.

Panel

The LBBP has two types of panels, as shown in Figure 3-27 and Figure 3-28.

Figure 3-27 LBBPc panel

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Figure 3-28 LBBPd panel

NOTE

The LBBPd1, LBBPd2, and LBBPd3 have silkscreens LBBPd1, LBBPd2, and LBBPd3 indicating their board types on the lower left corner of the board panel, respectively.

Functions

The LBBP performs the following functions:

l Processes uplink and downlink baseband signals.

l Provides CPRI ports for communication with RF modules.

Indicators

On the LBBP panel, there are three indicators, as described in Table 3-50.

Table 3-50 Indicators on the LBBP panel

Silkscreen

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 functioning

properly.

On for 0.125s and off for

0.125s

l The board is being loaded or

configured.

l The board is not started.

ALM Red Steady on An alarm is generated, and the

board must be replaced.

Steady off The board is running properly.

On for 1s and off for 1s An alarm is generated, and you

ACT Green Steady on The board serves as an active

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need to locate the fault before deciding whether to replace the board.

board.

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Silkscreen Color Status Description

Steady off

l The board does not serve as

an active board.

l The board is not activated.

l The board does not provide

any services.

On for 1s and off for 1s The power supply for the board

is insufficient.

NOTE

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

As listed in Table 3-51, the LBBP provides six indicators indicating the Small Form-factor Pluggable (SFP) link status. The indicators are positioned above the SFP ports.

Table 3-51 SFP link status indicators

Silkscreen Color Status Description

CPRIx Red or green Steady green The CPRI link is

functioning properly.

Steady red An optical module

fails to receive or transmit signals because of the following reasons:

l The optical

module is faulty.

l The fiber optic

cable is broken.

Blinking red (on for

0.125s and off for

0.125s)

The RF module connected to the CPRI link has a hardware fault.

Blinking red (on for 1s and off for 1s)

The CPRI link is out of lock because of the following reasons:

l There is no mutual

lock between dualmode clock sources.

l The data rates of

the CPRI ports do not match each other.

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Silkscreen Color Status Description

Steady off

The LBBPd provides an indicator that indicates the Quad Small Form-factor Pluggable (QSFP) link status. The indicator is above the QSFP port. Table 3-52 describes the indicator.

Table 3-52 QSFP link status indicator

Silkscreen Color Status Description

HEI Red or green Steady green The inter-BBU

Steady red An optical module

l The optical

module cannot be detected.

l The CPRI cable is

not connected.

transmission link is functional.

fails to receive or transmit signals because of the following reasons:

l The optical

module is faulty.

l The fiber optic

cable is broken.

Ports

Blinking red (on for 1s and off for 1s)

Steady off

Table 3-53 describes the six CPRI ports on the LBBP panel.

The interconnection link is out of lock because of the following reasons:

l There is no

mutual lock between two interconnected BBUs.

l The data rates of

the QSFP ports do not match each other.

The optical module cannot be detected.

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Table 3-53 LBBP ports

Silkscreen Connector Quantity Description

3.1.11 FAN

CPRI0 to CPRI5 SFP female

connector

Table 3-54 describes the QSFP port on the LBBPd panel.

Table 3-54 QSFP port on the LBBPd panel

Silkscreen Connector Quantity Description

HEI QSFP connector 1 Reserved

The FAN unit for the BBU3900 controls the speed of fans and monitors the temperature of the fan unit. It reports the status of the fans and fan unit, and dissipates heat from the BBU.

6 Connected to the RF

modules for transmitting service data, clock signals, and synchronization information.

Panel

The FAN units fall into two types: FAN and FANc, as shown in Figure 3-29 and Figure 3-30.

Figure 3-29 FAN

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Figure 3-30 FANc

Functions

Indicator

NOTE

There is a FANc silkscreen on the FANc while the FAN has no such silkscreen.

The FAN unit performs the following functions:

l Controls the fan speed.

l Reports the status, temperature, and in-position signal of the fans to the main control

processing unit.

l Monitors the temperature at the air intake vent.

l Dissipates heat.

l The FANc provides a read-write electronic label.

There is only one indicator on the panel of the FAN unit, which indicates the operating status of the fans. Table 3-55 describes the indicator.

Table 3-55 Indicator on the panel of the FAN unit

Silkscreen

Color Status Description

STATE Red or green Blinking green (on

for 0.125s and off for

0.125s)

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

Blinking red (on for 1s and off for 1s)

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The module is not registered, and no alarm is reported.

The module is working.

The module is reporting alarms.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Silkscreen Color Status Description

Steady off There is no power

supply.

3.1.12 UPEU

The universal power and environment interface unit (UPEU) for the BBU3900 converts -48 V DC or +24 V DC power into +12 V DC power.

Panel

The UPEU is classified into four types: universal power and environment interface unit type a (UPEUa), universal power and environment interface unit type b (UPEUb), universal power and environment interface unit type c (UPEUc), and universal power and environment interface unit type d (UPEUd). The UPEUa, UPEUc, and UPEUd convert -48 V DC power into +12 V DC power, and the UPEUb converts +24 V DC power into +12 V DC power. Figure 3-31, Figure

3-32, Figure 3-33, and Figure 3-34 show the panels of the UPEUa, UPEUb, UPEUc, and

UPEUd, respectively.

Figure 3-31 UPEUa panel

(1) BBU power switch

Figure 3-32 UPEUb panel

(2) 7W2 connector

(1) BBU power switch

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(2) 7W2 connector

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Figure 3-33 UPEUc panel

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

Functions

Figure 3-34 UPEUd panel

(1) BBU power switch

(2) 3V3 connector

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 "-48 V" and "+24 V" on them.

The UPEU performs the following functions:

l Converts -48 V DC or +24 V DC power into +12 V DC power, which is the operating

voltage of the boards.

l Provides two ports with each receiving one RS485 signal and another two ports with each

receiving four Boolean signals. The Boolean signals can only be dry contact or Open Collector (OC) signals.

Table 3-56 describes the specifications.

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Table 3-56 Specifications

Board Output Power Backup Mode

Indicator

UPEUa The output power of a

1+1 backup

UPEUa is 300 W.

UPEUc The output power of a

1+1 backup UPEUc is 360 W, and the output power of two UPEUc boards is 650 W.

UPEUd The output power of a

1+1 backup UPEUd is 650 W.

NOTE

After the UPEUa is replaced by the UPEUc, the UPEU power consumption data monitored by the M2000 will change. The power consumption data does not only depend on the output power but also on the data collection method. The UPEUc and UPEUa use different methods for collecting power consumption data. Therefore, the decrease in the power consumption shown in the M2000 after the UPEUa is replaced by the UPEUc does not necessarily reflect the actual decrease of power consumption.

The UPEU has one indicator, which indicates the operating status of the UPEU. Table 3-57 describes the indicator.

Port

Table 3-57 Indicator on the UPEU panel

Silkscreen

Color Status Description

RUN Green Steady on The board is

functional.

Steady off There is no power

supply, or the board is faulty.

The UPEU provides two RS485 signal ports, each receiving one RS485 signal, and two Boolean signal ports, each receiving four Boolean signals. Figure 3-35 shows the slots in the BBU.

Figure 3-35 Slots in the BBU

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Table 3-58 describes the ports on the UPEU panel.

Table 3-58 Description on the ports

Slot SilkscreenConnectorQuantity Description

Slot 19 +24 V or

-48 V

EXTALM0

EXTALM1

MON0 RJ45

MON1 RJ45

Slot 18 +24 V or

-48 V

EXTALM0

EXTALM1

3V3 or 7W2 connector

RJ45 connector

connector

3V3 or 7W2 connector

RJ45 connector

1 Introducing +24 V or -48 V DC power

1 Port for Boolean inputs 0 to 3

1 Port for Boolean inputs 4 to 7

1 Port for RS485 input 0

1 Port for RS485 input 1

1 Introducing +24 V or -48 V DC power

1 Port for Boolean inputs 0 to 3

1 Port for Boolean inputs 4 to 7

MON0 RJ45

connector

MON1 RJ45

connector

1 Port for RS485 input 0

1 Port for RS485 input 1

3.1.13 UEIU

The universal environment interface unit (UEIU) of the BBU3900 transmits monitoring signals and alarm signals from external devices to the main control board.

Panel

Figure 3-36 shows the panel of the UEIU.

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Figure 3-36 Panel of the UEIU

Functions

The UEIU performs the following functions:

l Provides two ports with each receiving one path of RS485 signal.

l Provides two ports with each receiving four paths of Boolean signals. The Boolean signals

can only be dry contact or OC signals.

l Transmits monitoring signals and alarm signals from external devices to the main control

board.

Port

The UEIU is configured in slot 18 and provides two RS485 signal ports, each transmitting one path of RS485 signals, and two Boolean signal ports, each transmitting four paths of Boolean signals.

Table 3-59 describes the ports on the panel of the UEIU.

Table 3-59 Ports on the panel of the UEIU

Slot

Slot 18 EXT-

SilkscreenConnectorQuantityDescription

RJ45

ALM0

EXTALM1

MON0 RJ45

MON1 RJ45

connector

RJ45 connector

connector

1 Port for Boolean inputs 0 to 3

1 Port for Boolean inputs 4 to 7

1 Port for RS485 input 0

1 Port for RS485 input 1

3.1.14 UTRP

The universal transmission processing unit (UTRP) is an extended transmission board in the BBU3900 and provides ports connecting to transmission equipment.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Specifications

Table 3-60 describes the specifications of the UTRP.

Table 3-60 Specifications of the UTRP

Board Sub-

board/ Board Type

UTRP2 UEOC UMTS Transmiss

UTRP3 UAEC UMTS ATM over

UTRP4 UIEC UMTS IP over E1/T12 Eight

UTRPb4 Without a

sub-board

UTRP6 UUAS UMTS STM-1/

UTRP9 UQEC UMTS Transmiss

Supporte d Mode

GSM TDM over

Transmis sion Mode

ion over FE/GE optical ports

E1/T1

OC-3

ion over FE/GE electrical ports

Number of ports

2 10 Mbit/s,

2 Eight

1 One

4 10 Mbit/s,

Port Capacity

100 Mbit/ s, and 1000 Mbit/ s

channels

channel

100 Mbit/ s, and 1000 Mbit/ s

Full/ HalfDuplex

Fullduplex

UTRPc Without a

sub-board

GSM

UMTS

LTE

Transmiss ion over FE/GE electrical ports

Transmiss ion over FE/GE optical ports

Panel

Figure 3-37 shows the panel of the UTRP2.

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4 10 Mbit/s,

100 Mbit/ s, and 1000 Mbit/ s

2 100 Mbit/s

and 1000 Mbit/s

Fullduplex

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Figure 3-37 Panel of the UTRP2 (with two optical ports)

Figure 3-38 shows the panel of the UTRP3 and UTRP4.

Figure 3-38 Panel of the UTRP3 and UTRP4 (with eight E1/T1 channels)

Figure 3-39 shows the panel of the UTRPb4 in GSM mode.

Figure 3-39 Panel of the UTRP4 (with eight E1/T1 channels)

Figure 3-40 shows the panel of the UTRP6.

Figure 3-40 Panel of the UTRP6 (with one STM-1 channel)

Figure 3-41 shows the panel of the UTRP9.

Figure 3-41 Panel of the UTRP9 (with four electrical ports)

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Figure 3-42 shows the panel of the UTRPc.

Figure 3-42 Panel of the UTRPc (with four electrical ports and two optical ports)

Functions

The UTRP performs the following functions:

l Provides extended E1/T1 ports to connect to transmission equipment, supporting ATM,

TDM, and IP transmission.

Restriction

Indicators

l Provides electrical and optical transmission ports to connect to transmission equipment.

l Supports cold backup.

The GTMUa cannot be used together with the UTRPc.

Table 3-61 describes the indicators on the UTRP panel.

Table 3-61 Indicators on the UTRP panel

Silkscreen

RUN Green Steady on There is power

Color Status Description

supply, but the board is faulty.

Steady off There is no power

supply, or the board is faulty.

On for 1s and off for1sThe board is running

On for 0.125s and off for 0.125s

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properly.

l The board is

being loaded or configured.

l The board is not

started.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Silkscreen Color Status Description

ALM Red Steady on An alarm is

generated, and the board needs to be replaced.

Steady off The board is running

properly.

On for 1s and off for1sAn alarm is

generated and you need to locate the fault before deciding whether to replace the board.

ACT Green Steady on The board serves as

an active board.

Steady off

l The board does

not serve as an active board.

l The board has not

been activated.

l The board is not

providing any services.

The ACT indicator on the UTRP board in GSM mode has different status from the ACT indicator on other boards, as listed in Table 3-62.

Table 3-62 Status of the ACT indicator on the UTRP board in GSM mode

Silkscreen

ACT Green Steady on

Color Status Description

l Before the

configuration takes effect, none or both of the two E1 ports in GSM mode are functional.

l The

configuration has taken effect.

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Silkscreen Color Status Description

On for 0.125s and off for 0.125s

Before the configuration takes effect, only one E1 port in GSM mode is functional.

Each Ethernet port on the UTRP2, UTRP9, and UTRPc corresponds to two indicators indicating the status of the current link, as listed in Table 3-63.

Table 3-63 Status of the indicators for Ethernet ports on the UTRP2, UTRP9, and UTRPc

Silkscreen Color Status Description

LINK Green Steady on The link is connected

properly.

Steady off The link is not

connected properly.

ACT Orange Blinking Data is being

transmitted or received on the link.

Steady off No data is being

transmitted or received on the link.

There are three indicators on the UTRPc: R0, R1, and R2, of which the status is listed in Table

3-64.

Table 3-64 Status of indicators on the UTRPc

Silkscreen

Color Status Description

R0 Red or green Steady off The board is not

working in GSM mode.

Steady green The board is working

in GSM mode.

Steady red Reserved

R1 Red or green Steady off The board is not

working in UMTS mode.

Steady green The board is working

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in UMTS mode.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Silkscreen Color Status Description

Steady red Reserved

R2 Red or green Steady off The board is not

working in LTE mode.

Steady green The board is working

in LTE mode.

Steady red Reserved

NOTE

If multiple indicators are on at the same time, the board works in multiple modes.

Ports

Table 3-65 describes the ports on the UTRP2.

Table 3-65 Ports on the panel of the UTRP2 (with 2 optical ports)

Silkscreen

Port Type Quantity Connector

FE/GE0 and FE/GE1 FE/GE optical port 2 SFP female

connector

The UTRP3, UTRP4, and UTRPb4 have the same ports, as listed in Table 3-66.

Table 3-66 Ports on the panel of the UTRP3, UTRP4, and UTRPb4 (with 8 E1/T1 ports)

Silkscreen

Port Type Quantity Connector

E1/T1 E1/T1 port 2 DB26 female

connector

Table 3-67 lists the ports on the UTRP6.

Table 3-67 Ports on the panel of the UTRP6 (with one STM-1 channel)

Silkscreen

Port Type Quantity Connector

STM-1/OC-3 STM-1/OC-3 1 SFP female

Table 3-68 lists the ports on the UTRP9.

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connector

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Table 3-68 Ports on the panel of the UTRP9 (with four electrical ports)

Silkscreen Port Type Quantity Connector

FE/GE0 to FE/GE3 FE/GE electrical port 4 RJ45 connector

Table 3-69 describes the ports on the panel of the UTRPc.

Table 3-69 Ports on the panel of the UTRPc (with four electrical ports and two optical ports)

Silkscreen Port Type Quantity Connector

FE/GE0 and FE/GE1 FE/GE optical port 2 SFP female

connector

FE/GE2 to FE/GE5 FE/GE electrical port 4 RJ45 connector

DIP Switch

There is no DIP switch on the UTRP2, UTRP6, and UTRP9.

There are three DIP switches on the UTRP3, UTRP4, and UTRPb4. SW1 and SW2 are used to set whether to ground the receiver end of the E1 cable, and SW3 is used to set the resistance of the E1 cable. Figure 3-43 shows the DIP switches on the UTRP3 and UTRP4. Figure 3-44 shows the DIP switches on the UTRPb4.

Figure 3-43 DIP switches on the UTRP3 and UTRP4

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Figure 3-44 DIP switches on the UTRPb4

Table 3-70, Table 3-71, and Table 3-72 list the settings of the DIP switches on the UTRP.

Table 3-70 Settings of SW1 on the UTRP

DIP

DIP Setting Description

Switch

1 2 3 4

SW1 OFF OFF OFF OFF Balanced

ON ON ON ON Imbalanced

Others Unavailable

Table 3-71 Settings of SW2 on the UTRP

DIP

DIP Setting Description

Switch

1 2 3 4

SW2 OFF OFF OFF OFF Balanced

ON ON ON ON Imbalanced

Others Unavailable

CAUTION

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

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Table 3-72 Settings of SW3 on the UTRP

3.1.15 USCU

Specifications

DIP Switch

SW3 OFF OFF ON ON T1

This section describes the universal satellite card and clock unit (USCU).

DIP Setting Description

1 2 3 4

ON ON OFF OFF The E1

ON ON ON ON The E1

Others Unavailable

resistance is set to 120 ohm.

resistance is set to 75 ohm.

The USCU falls into five types, as shown in Table 3-73.

Table 3-73 Specifications of the USCU

Board

USCUb11 LTE N/A

USCUb12 GSM

USCUb14 GSM

USCUb22 GSM

USCUb21 GSM

Supported Mode Supported Satellite Card

UMTS

LTE

UMTS

LTE

UMTS

LTE

UMTS

LTE

RT single-satellite card

UBLOX single-satellite card

Naviors dual-satellite card

K161 dual-satellite card

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Panel

There are five types of USCU: USCUb11, USCUb12, USCUb14, USCUb22, and USCUb21, as shown in Figure 3-45 and Figure 3-46. The USCUb11, USCUb12, and USCUb14 have the same exterior. The USCUb22 and the USCUb21 have the same exterior.

Figure 3-45 USCUb11, USCUb12, and USCUb14 panel

Figure 3-46 USCUb22 and USCUb21 panel

Functions

(1) GPS port

(2) RGPS port (3) TOD port (4) M-1PPS port (5) BITS port

NOTE

l The USCUb11, USCUb12, and USCUb14 have silkscreens USCUb11 , USCUb12 and USCUb14

indicating their board types on the lower left corner of the board panel, respectively.

l The USCUb22 and USCUb21 have silkscreens USCUb22 and USCUb21 indicating their board types

on the lower left corner of the board panel, respectively.

The USCU has the following functions:

l The USCUb11 provides ports to communicate with the RGPS (for example the reused

equipment of the customer) and BITS equipment. It does not support GPS signals.

l The USCUb12 contains an RT satelliate card, which does not support RGPS signals.

l The USCUb14 contains a UBLOX satelliate card, which does not support RGPS signals.

l The USCUb22 does not support RGPS signals. It uses a Naviors satellite card, which must

be purchased locally and installed onsite.

l The USCUb21 does not support RGPS signals. It uses a K161 satellite card, which must

be purchased locally and installed onsite.

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Indicators

Table 3-74 and Table 3-75 describe the indicators on the USCU.

Table 3-74 Indicators on the USCU

Silkscreen 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 for1sThe board is

functioning properly.

On for 0.125s and off for 0.125s

ALM Red Steady on An alarm is

Steady off The board is running

On for 1s and off for1sAn alarm is

ACT Green Steady on The board serves as

Steady off

l The board is

being loaded or configured.

l The board is not

started.

generated, and the board needs to be replaced.

properly.

generated and you need to locate the fault before deciding whether to replace the board.

an active board.

l The board does

not serve as an active board.

l The board has not

been activated.

l The board is not

providing any services.

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Table 3-75 Indicators for the TOD ports

Color Status Description

Ports

Green (on the left) The green indicator is steady

on and the orange indicator is steady off.

Orange (on the right) The orange indicator is steady

on and the green indicator is steady off.

Table 3-76 describes the ports on the USCU.

Table 3-76 Ports on the USCU

Silkscreen Connector Description

GPS SMA connector The GPS ports on the USCUb12, USCUb21,

USCUb14 and USCUb22 receive GPS signals.

The GPS port on the USCUb11 is reserved and cannot receive GPS signals.

RGPS port PCB welded

wiring terminal

The RGPS port on the USCUb11 receives RGPS signals.

The RGPS ports on the USCUb12, USCUb21, USCUb14 and USCUb22 are reserved and cannot receive RGPS signals.

The TOD port is configured as an input port.

The TOD port is configured as an output port.

TOD0 port RJ45 connector This port receives or transmits 1PPS+TOD signals.

TOD1 port RJ45 connector This port receives or transmits 1PPS+TOD signals,

and receives TOD signals from the M1000.

BITS port SMA connector This port receives BITS clock signals, supports

adaptive input of 2.048 MHz and 10 MHz clock reference source.

M-1PPS port SMA connector This port receives 1PPS signals from the M1000.

3.1.16 UBRI

The universal baseband radio interface board (UBRI) provides extended CPRI optical or electrical ports to implement convergence, distribution, and multi-mode transmission on the CPRI.

Panel

Figure 3-47 shows the panel of the UBRI.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Figure 3-47 UBRI panel

Functions

The UBRI performs the following functions:

l Provides extended CPRI electrical or optical ports.

l Performs convergence, distribution, and multi-mode transmission on the CPRI.

Indicators

Table 3-77 describes the indicators on the UBRI panel.

Table 3-77 Indicators on the UBRI panel

Silkscreen 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

ALM Red Steady on An alarm is generated on the

Steady off The board is running properly.

On for 1s and off for 1s An alarm is generated and you

ACT Green Steady on The board serves as an active

Software is being loaded to the board.

board.

need to locate the fault before deciding whether to replace the board.

board.

Steady off

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l The board does not serve as

an active board.

l The board has not been

activated.

l The board is not providing

any services.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

The UBRI provides six indicators indicating the status of the CRRI links. The indicators are above the SFP ports. Table 3-78 describes the indicators.

Table 3-78 CPRI port status indicators

Silkscreen Color Status Description

CPRIx Red or green Steady green The CPRI link is

functioning properly.

Steady red An optical module

fails to receive signals because of the following reasons:

l The optical

module is faulty.

l The fiber optic

cable is broken.

Ports

Blinking red (on for 1s and off for 1s)

Steady off

Table 3-79 describes the ports on the UBRI panel.

The CPRI link is out of lock because of the following reasons:

l There is no mutual

lock between dualmode clock sources.

l The data rates of

the CPRI ports do not match each other.

l The optical

module cannot be detected.

l The CPRI cable is

not connected.

Table 3-79 Ports on the UBRI panel

Silkscreen

CPRI0 to CPRI5 SFP female

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

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Connector Quantity Description

6 Connecting the BBU

connector

and the RF module

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Table 3-80 Specifications of the CPRI ports on the UBRI

3.1.17 UELP

Panel

Board CPRI Port

Quantity

UBRI 6 1.25/2.5 Star, chain, and ring

Each universal E1/T1 lightning protection unit (UELP) provides surge protection for four paths of E1/T1 signals.

Figure 3-48 shows the panel of the UELP.

Figure 3-48 UELP panel

CPRI Port Data Rate (Gbit/s)

Topology Type

topologies

Ports

DIP Switch

Table 3-81 lists the ports on the UELP.

Table 3-81 Ports on the UELP

Silkscreen

INSIDE DB25 female connector Connecting to a transmission

OUTSIDE DB26 female connector Connecting to an external

The UELP has one DIP switch, which is used to determine whether the receiving end is grounded. The DIP switch has four DIP bits. Figure 3-49 shows the DIP switch on the UELP.

Connector Description

board of the base station

transmission device

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Figure 3-49 DIP switch on the UELP

3.1.18 UFLP

Table 3-82 describes the DIP switch on the UELP.

Table 3-82 DIP switch on the UELP

DIP

DIP Status Description

Switch

1 2 3 4

S1 OFF OFF OFF OFF Not grounded

Other status Grounded

NOTE

The E1 cable of 75 ohms can be either grounded or not, whereas the E1 cable of 120 ohms and the T1 cable of 100 ohms cannot be grounded.

Each universal FE lightning protection unit (UFLP) provides protection for two channels of FE signals. Each universal FE lightning protection unit type B (UFLPB) provides protection for two channels of FE/GE signals.

NOTE

The UFLPB applies only to the LTE mode.

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BTS3900C (Ver.C) Hardware Description 3 BTS3900C Modules

Panel

Figure 3-50 shows the UELP panel.

Figure 3-50 UELP panel

Figure 3-51 shows the UFLPB panel.

Figure 3-51 UFLPB panel

Port

Table 3-83 describes UFLP ports.

Table 3-83 UFLP ports

Port Location

INSIDE side FE0 and FE1 RJ45 connector Connecting to a

OUTSIDE side FE0 and FE1 RJ45 connector Connecting to an external

Table 3-84 describes UFLPB ports.

Table 3-84 UFLPB ports

Silkscreen Connector Description

transmission board of the base station

transmission device

Port Location

INSIDE side FE/GE0 and FE/GE1 RJ45 connector Connecting to a

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Silkscreen on the Panel

Connector Description

transmission board of the base station