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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: support@huawei.com
http://www.huawei.com/mailto:support@huawei.commailto:support@huawei.comhttp://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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BBU3900 Description
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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
CPR

bbu3900 description 01_

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