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BBU3900 Description

Issue 01

Date 2012-07-30

HUAWEI TECHNOLOGIES CO., LTD.


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Issue 01 (2012-07-30) Huawei Proprietary and Confidential

Copyright Huawei Technologies Co., Ltd.

Page 2 of 22

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

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

written consent of Huawei Technologies Co., Ltd.

Trademarks and Permissions

and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.

All other trademarks and trade names mentioned in this document are the property of their respective

holders.

Notice

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

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

within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements,

information, and recommendations in this document are provided "AS IS" without warranties, guarantees orrepresentations of any kind, either express or implied.

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

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

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

Huawei Technologies Co., Ltd.

Address: Huawei Industrial Base

Bantian, Longgang

Shenzhen 518129

People's Republic of China

Website: http://www.huawei.com

Email: [email protected]
http://www.huawei.com/mailto:[email protected]:[email protected]://www.huawei.com/


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About This Document

Overview

This document describes the network position, product architecture and characteristics, andrelated technical specifications of the BBU3900, helps users learn the basic information aboutthe BBU3900.

Intended Audience

This document is intended for:

l Huawei technical support

l System engineers

l Network planning engineers

Change HistoryUpdates between document issues are cumulative. Therefore, the latest document issue

contains all updates made in previous issues.

Issue 01 (2012-07-30)

This is the first commercial release.


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1 Overview1.1 BBU3900 Functions

A BBU3900 is a baseband unit that performs the following functions:

l Provides S1 ports for communication between an E-UTRAN NodeB (eNodeB) and anMME/S-GW, and X2 ports for communication between eNodeBs. E-UTRAN is short for

evolved universal terrestrial radio access network.

l Provides common public radio interface (CPRI) ports for communication with RRUs andprocesses uplink and downlink baseband signals. RRU is short for remote radio unit.

l Manages the eNodeB through operation and maintenance (OM) and signaling messageprocessing.

l Provides an OM channel to the local maintenance terminal (LMT) or M2000. iManagerM2000 (M2000). The M2000 is an integrated OM system designed by Huawei.

l Provides clock ports for clock synchronization, alarm monitoring ports for environment

monitoring, and a Universal Serial Bus (USB) port for commissioning using a USB flash

drive. The security of the USB port is ensured by encryption.

1.2 Exterior of the BBU3900The BBU3900 is a case measuring 19 inch wide and 2 U high. It can be installed indoors,such as an office building or residence, or be installed in a cabinet with surge protection in an

outdoor place, such as a basement, balcony, corridor, or garage.

Figure 1-1shows the exterior of the BBU3900.


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Figure 1-1BBU3900

1.3 BBU3900 Boards

The following boards can be installed in the BBU3900:

l LMPT and UMPT

l LBBP

l UTRP

l USCU

l UELP and UFLP

l UPEU

l UEIU

l FAN

1.3.1 LMPT

LMPT is short for Long Term Evolution (LTE) main processing and transmission unit.

Panel

Figure 1-2shows the panel of the LMPT.

Figure 1-2LMPT panel


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Functions

An LMPT performs the following functions:

l Controls and manages the eNodeB configuration, devices, performance, and radio

resources, and processes the eNodeB signaling.l Provides clock reference, transmission ports, and the maintenance link connecting to the

operation and maintenance center (OMC). The OMC can be the LMT or M2000 client.

Ports

Table 1-1describes the ports on the LMPT.

Table 1-1Ports on the LMPT

Label Connector Number ofPorts

Description

SFP0 and SFP1 LC 2 FE/GE optical ports

FE/GE0 andFE/GE1

RJ45 2 FE/GE electrical ports

USB USB 1 Software loading port

The security of the USB port is

ensured by encryption.

TST USB 1 Testing port

The TST port is used for

commissioning the base station

rather than importing or exportingthe base station configuration.

ETH RJ45 1 Local maintenance port

GPS SMA 1 Global Positioning System (GPS)

antenna port

RST N/A 1 Hardware reset button

1.3.2 UMPTUMPT is short for universal main processing and transmission unit.

Panel

Figure 1-3shows the panel of the UMPT.


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Figure 1-3UMPT panel

Functions

A UMPT performs the following functions:

l Performs OM functions, including configuration management, equipment management,performance monitoring, signaling processing, and active/standby switchover.

l Provides clock reference, transmission ports, and the maintenance link connecting to the

OMC. The OMC can be the LMT or M2000 client.

l Provides the IDX1 channel through which low rate user panel data and control ormaintenance signals of each board in the baseband unit (BBU) are transmitted to the

target port.

Ports

Table 1-2describes the ports on the UMPT.

Table 1-2Ports on the UMPT


Description

FE/GE0 RJ45 1 FE/GE electrical port

FE/GE1 SFP 1 FE/GE optical port

USB USB 1 Software loading and Ethernet

commissioning port

1. The security of the USB port isensured by encryption.

2. When the USB port functionsas a commissioning Ethernet

port, ensure that an OM port

has been opened and the userhas obtained required

authorities for accessing thebase station through the OM

port before accessing the basestation through the USB port.

CLK USB 1 Transmits Remote Global

Positioning System (RGPS) or

time of day (TOD) clock signalsand information about serial ports

E1/T1 DB26 female 1 Transmits and receives four links

of E1/T1 signals


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Description

GPS SMA 1 GPS antenna port

S0 SFP 1 Reserved

1.3.3 LBBP

LBBP is short for LTE baseband processing unit. The types of LBBPs are LBBPc, LBBPd1,

and LBBPd2.

Panel

Figure 1-4shows the panel of the LBBPc

Figure 1-4LBBPc panel

Figure 1-5shows the panel of the LBBPd1.

Figure 1-5LBBPd panel

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

Functions

An LBBP performs the following functions:

l Provides CPRI ports for communication with radio frequency (RF) modules.

l Processes uplink and downlink baseband signals.

Ports

Table 1-3shows the ports on the LBBPc.


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Table 1-3Ports on the LBBPc


Description

CPRI0 toCPRI5

SFP, female 6 Data transmission ports thatconnect to RF modules. Theseports support electrical and optical

signal input and output.

Table 1-4shows the ports on the LBBPd1 and LBBPd2.

Table 1-4Ports on the LBBPd1 and LBBPd2


Description

CPRI0 to

CPRI5SFP, female 6 Data transmission ports that

connect to RF modules. These

ports support electrical and opticalsignal input and output.

HEI QSFP 1 Reserved.

1.3.4 UTRP

The UTRP is short for universal transmission processing unit. The types of UTRPs areUTRP4 and UTRPc.

Panel

Figure 1-6shows the panel of the UTRP4.

Figure 1-6UTRP4 panel

Figure 1-7shows the panel of the UTRPc.

Figure 1-7UTRPc panel


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Functionsl The UTRP4 is supported in eRAN1.1 and later versions. It provides two DB26 ports and

transmits eight links of E1/T1 signals.

l The UTRPc is supported in eRAN3.0 and later versions. It provides four FE/GE

electrical ports and two FE/GE optical ports.

Ports

Table 1-5shows the ports on the UTRP4.

Table 1-5Ports on the UTRP4


Description

E1/T1 (0 to 3) DB26 1 Transmits and receives one to

three links of E1/T1 signals

E1/T1 (4 to 7) DB26 1 Transmits and receives four to

seven links of E1/T1 signals

Table 1-6shows the ports on the UTRPc.

Table 1-6Ports on the UTRPc


Description

FE/GE0 to

FE/GE3RJ45 4 FE/GE electrical ports

FE/GE0 and

FE/GE1SFP 2 FE/GE optical ports

1.3.5 USCU

The USCU is short for universal satellite card and clock unit. The types of USCUs are

USCUb0, USCUb1, and USCUb2.

Panel

Figure 1-8shows the panel of the USCUb0/USCUb1.

Figure 1-8USCUb0/USCUb1 panel


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1.3.6 UELP

The UELP is short for universal E1/T1 lightning protection unit.

Panel

Figure 1-10shows the panel of the UELP.

Figure 1-10UELP panel

Functions

One UELP provides surge protection for four links of E1/T1 signals.

Ports

Table 1-8shows the ports on the UELP.

Table 1-8Ports on the UELP

Label Connector Number ofPorts Description

INSIDE DB25 1 Connects to an eNodeB

transmission board

OUTSIDE DB26 1 Connects to an external

transmission device

1.3.7 UFLP

The UFLP is short for universal FE lightning protection unit.

Panel

Figure 1-11shows the panel of the UFLPb.

Figure 1-11UFLPb panel


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Functions

One UFLP provides surge protection for two links of FE/GE signals.

PortsTable 1-9shows the ports on the UFLPb.

Table 1-9Ports on the UFLPb


Description

INSIDE FE/GE0 and

FE/GE1RJ45 2 Connects to an eNodeB

transmission board

OUTSIDE FE/GE 0

and FE/GE1

RJ45 2 Connects to an external

transmission device

1.3.8 UPEU

The UPEU is short for universal power and environment interface unit. The types of UPEUs

are UPEUa and UPEUc.

Panel

Figure 1-12shows the panel of the UPEUa.

Figure 1-12UPEUa panel

Figure 1-13shows the panel of the UPEUc.


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Figure 1-13UPEUc panel

FunctionsThe UPEUa and UPEUc perform the following functions:

l The UPEUa converts -48 V DC input power into +12 V DC and provides an output

power of 300 W.

l The UPEUc converts -48 V DC input power into +12 V DC. One UPEUc provides anoutput power of 360 W, and two UPEUc boards provide a combined output power of 650

W.

l Both the UPEUa and the UPEUc support two links of RS485 signals and eight links ofBoolean signals.

PortsThe UPEUa and UPEUc both provide the same ports as described in Table 1-10.

Table 1-10Ports on the UPEUa or UPEUc


Description

-48V 3V3 1 Provides -48 V DC power input

EXT-ALM0 RJ45 1 Receives Boolean signal inputs 0

to 3


to 7

MON0 RJ45 1 Receives RS485 signal input 0


1.3.9 UEIU

The UEIU is short for universal environment interface unit. It transmits information reported

by the environment monitoring device and alarm information to the main control board.


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Panel

Figure 1-14shows the panel of the UEIU.

Figure 1-14UEIU panel

Functions

A UEIU performs the following functions:

l Provides two links of RS485 signals.

l Provides eight links of Boolean signals.

l Transmits information reported by the environment monitoring device and alarminformation to the main control board.

Ports

Table 1-11shows the ports on the UEIU.

Table 1-11Ports on the UEIU


Description


to 3


to 7



1.3.10 FAN

The FAN is the fan unit of the BBU3900. The types of fan units are FAN and FANc.


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Panel

Figure 1-15shows the panel of the FAN.

Figure 1-15FAN panel

Figure 1-16shows the panel of the FANc.

Figure 1-16FANc panel

Functions

The FAN dissipates heat from the BBU3900. It monitors the inlet temperature, controls the

rotation speed of the fans, and reports the status of the fans to the LMPT or UMPT in theBBU3900.


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1.4 BBU3900 Board Configuration

Figure 1-17shows the typical configuration of the BBU3900.

Figure 1-17Typical configuration of the BBU3900


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2 Technical Specifications2.1 Capacity

Table 2-1Capacity

Item Specifications

Maximum number of cells 4T4R beamforming: 18 cells with a bandwidth of 10

MHz or 20 MHz for each cell

4 x 2 MIMO: 18 cells with a bandwidth of 5 MHz or

10 MHz or 20 MHz for each cell

2 x 2 MIMO: 18 cells with a bandwidth of 5 MHz or

10 MHz or 20 MHz for each cell

Maximum throughput per cell withthe 20 MHz bandwidth

Downlink data rate at the Media Access Control(MAC) layer: 130 Mbit/s (4 x 2 MIMO and 2 x 2MIMO)

Maximum throughput per eNodeB Sum of uplink and downlink data rates at the MAC

layer: 1500 Mbit/s

Maximum number of UEs inRRC_CONNECTED mode in aneNodeB

10,800

Data radio bearer (DRB) Eight DBRs per user equipment (UE)

2.2 Transmission Ports

Table 2-2Transmission ports

Board Specifications

LMPT Two FE/GE electrical ports, two FE/GE optical ports,

or one FE/GE optical port + one FE/GE electrical

port


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Board Specifications

UMPT One FE/GE electrical port, one FE/GE optical port,

and one DB26 port transmitting four links of E1/T1signals

UTRP4 Two DB26 port transmitting a total of eight links of

E1/T1 signals

UTRPc Four FE/GE electrical ports and two FE/GE optical

ports

2.3 Input Power

Table 2-3Input power

Item Specifications

Input power -48 V DC (voltage range: -38.4V DC to -57V DC)

2.4 Physical Specifications

Table 2-4Physical specifications

Item Specifications

Dimensions (height x width xdepth)

86 mm x 442 mm x 310 mm (3.46 in. x 17.40 in. x12.20 in.)

Weight !12 kg (26.46 lb) (in full configuration)

2.5 Environmental Specifications

Table 2-5Environmental specifications

Item Specifications

Working temperature -20"C to +50"C (-4"F to +122"F) (long term)

+50"C to +55"C (122"F to 131"F) (short term)

Relative humidity 5% RH to 95% RH

Ingress Protection (IP) rating IP20


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3 Acronyms and AbbreviationsTable 3-1List of acronyms and abbreviations

Acronym/Abbreviation Full Name

BBU BaseBand control Unit

CPRI Common Public Radio Interface

DBS Distribution Base Station

FAN Fan Unit

FE Fast Ethernet

GE Gigabit Ethernet

GPS Global Positioning System

LMT Local Maintenance Terminal

LTE Long Term Evolution

MIMO Multiple Input Multiple Output

OM Operation and Maintenance

RGPS Remote Global Positioning System

RRU Remote Radio Unit

UPEU Universal Power and Environment Interface Unit

USB Universal Serial Bus

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