Huawei eRAN2.1 DBS3900 LTE Product Overview

eRAN2.1 DBS3900 LTE
Product Description

Issue V2.0

Date 2011-01-20

HUAWEI TECHNOLOGIES CO., LTD.

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eRAN2.1 DBS3900 LTE Product Description

Contents

1 DBS3900 LTE Overview..................................................................................................... 4
1.1 Positioning ........................................................................................................................................... 4
1.2 Benefits ................................................................................................................................................ 5

2 Architecture .......................................................................................................................... 7
2.1 Overview .............................................................................................................................................. 7
2.2 BaseBand Unit ..................................................................................................................................... 8
2.2.1 Exterior of the BBU3900 ............................................................................................................ 8
2.2.2 Boards of the BBU3900 .............................................................................................................. 8
2.2.3 Ports on the BBU3900 ................................................................................................................ 9
2.3 RRU ................................................................................................................................................... 10
2.3.1 Exterior of the RRU .................................................................................................................. 10
2.3.2 Ports on the RRU ...................................................................................................................... 13
2.4 Auxiliary Devices ............................................................................................................................... 15
2.4.1 Advanced Power Module with Heat-Exchanger Cooler ........................................................... 15
2.4.2 Integrated Battery Backup System ............................................................................................ 16
2.4.3 Transmission Cabinet with Heat-Exchanger Cooler ................................................................. 17

3 Application Scenarios ...................................................................................................... 19
3.1 Overview ............................................................................................................................................ 19
3.2 BBU+RRU+APM30H Ver.B ............................................................................................................. 19
3.3 BBU+RRU+TMC11H Ver.B.............................................................................................................. 20
3.4 BBU+RRU+19-Inch Cabinet ............................................................................................................. 21
3.5 BBU+RRU+Indoor Wall .................................................................................................................... 22
3.6 BBU+RRU+ICR ................................................................................................................................ 23
3.7 BBU+RRU+IMB03 ........................................................................................................................... 24
3.8 BBU+RRU+OMB .............................................................................................................................. 25

4 Configuration..................................................................................................................... 27
4.1 Typical Configuration ........................................................................................................................ 27
4.2 Maximum Configuration .................................................................................................................... 27

5 Operation and Maintenance ........................................................................................... 29
5.1 Overview ............................................................................................................................................ 29
5.2 OM System ........................................................................................................................................ 29
Huawei Proprietary and Confidential
V2.0 (2011-01-20) Page 2 of 47
Copyright © Huawei Technologies Co., Ltd.


5.3 Benefits .............................................................................................................................................. 30
5.3.1 Configuration Management ...................................................................................................... 30
5.3.2 Fault Management .................................................................................................................... 31
5.3.3 Performance Management ........................................................................................................ 32
5.3.4 Security Management ............................................................................................................... 32
5.3.5 Software Management .............................................................................................................. 33
5.3.6 Deployment Management ......................................................................................................... 33
5.3.7 Equipment Management ........................................................................................................... 33
5.3.8 Inventory Management ............................................................................................................. 34

6 Technical Specifications .................................................................................................. 35
6.1 Capacity Specifications ...................................................................................................................... 35
6.2 Equipment Specifications................................................................................................................... 36
6.2.1 BBU3900 .................................................................................................................................. 36
6.2.2 RRU3201 (2T2R) ..................................................................................................................... 36
6.2.3 RRU3203 (2T2R) ..................................................................................................................... 37
6.2.4 RRU3908 (2T2R) ..................................................................................................................... 38
6.2.5 RRU3220 (2T2R) ..................................................................................................................... 39
6.2.6 RRU3222 (2T2R) ..................................................................................................................... 40
6.2.7 RRU3808 (2T2R) ..................................................................................................................... 41
6.3 Reliability Specifications ................................................................................................................... 42
6.4 Compliance Standards ........................................................................................................................ 42

A Acronyms and Abbreviations........................................................................................ 44

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1 DBS3900 LTE Overview

Long Term Evolution (LTE) is the next step in 3G technology. LTE provides various
technical benefits to Radio Access Network (RAN), such as flat network structure,
reduced time delay, higher user data rates, improved spectral efficiency, optimized
support for packet services, and improved system capacity and coverage. Compared
with the 3G network, LTE has flexible bandwidth, enhanced modulation schemes, and
effective scheduling, which meets the needs of operators. In addition, LTE allows
operators to use both existing and new spectral resources to provide data and voice
services.

1.1 Positioning
Focusing on the concept of customer-oriented innovation, Huawei launches the
distributed E-UTRAN NodeB (eNodeB) DBS3900 LTE, one of the products in
Huawei's SingleBTS product portfolio. The DBS3900 LTE fully exploits Huawei
platform resources and uses a variety of technologies.
The eNodeB represents the radio access equipment in the LTE system. Examples of
radio access function the eNodeB performs are Radio Resource Management (RRM)
functions such as air interface management, access control, mobility control, and UE
resource allocation. Multiple eNodeBs constitute an Evolved Universal Terrestrial
Radio Access Network (E-UTRAN) system.

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Figure 1-1 shows the eNodeB position in the network.

Figure 1-1 eNodeB in the network

eNodeB: E-UTRAN NodeB E-UTRAN: Evolved Universal Terrestrial Radio
Access Network
EPC: Evolved Packet Core MME: Mobility Management Entity
S-GW: Serving Gateway UE: User Equipment

1.2 Benefits
Advanced BS Platform, 2G and 3G Co-Network, RAN Sharing, and Smooth
Evolution
As LTE is one feature of SingleRAN,The DBS3900 LTE achieves smooth
network upgrade by sharing the hardware platform and equipment of Huawei
SingleBTS products with the DBS3900 GSM, DBS3900 UMTS, DBS3900
CDMA, or DBS3900 WiMAX. This saves the cost of LTE site deployment.
The DBS3900 LTE can share the network with the 2G or 3G network, and
supports handovers between the LTE and the PS domain of the
GERAN/UTRAN/CDMA2000. This facilitates LTE network deployment in the
existing 2G or 3G network.
The DBS3900 LTE supports RAN sharing. Different operators can share the
RAN network, thus reducing Capital Expenditure (CAPEX).
The BBU3900 is the baseband unit of the DBS3900 LTE. The BBU3900 is
hardware ready in terms of multi-mode applications. Therefore, boards of
different modes installed in one BBU3900 are supported.
The RRU is the remote radio unit of the DBS3900 LTE. The BBU3900 and RRU
can be flexibly configured on the basis of capacity and coverage requirements.
Using the approach of stack installation, capacity expansion can be easily
achieved through board/module stacking, rather than equipment replacement.
Therefore, the cost of hardware upgrade is significantly reduced.

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Large Capacity, Extensive Coverage, and High Throughput
The DBS3900 LTE provides large capacity, with a single eNodeB supporting a
maximum of 3,600 users in connected state (RRC connected).
The DBS3900 LTE provides extensive coverage. With features such as
multi-antenna RX diversity and uplink Inter-cell Interference Coordination
(ICIC), the DBS3900 LTE supports a maximum cell radius of 100 km.
The DBS3900 LTE provides high throughput. With features such as 64QAM
high-order modulation, uplink and downlink Multiple Input Multiple Output
(MIMO), and ICIC, the DBS3900 LTE reaches the maximum throughput of 450
Mbit/s in the downlink and 300 Mbit/s in the uplink.

Enhanced SON Function
Automatic configuration: The DBS3900 LTE can automatically obtain connection
parameters, download software, configure data, conduct tests, and upload
information to the EMS. This requires less preparation for data configuration and
reduces manual handling during site startup. Therefore, the OPEX can be
minimized.
Automatic Neighboring Relation (ANR): The DBS3900 LTE can automatically
maintain the integrity and validity of the neighboring cell list by automatically
detecting missing neighboring cells and evaluating the neighboring cell
relationships. This increases the handover success rate and reduces the cost of
network planning and optimization.
Automatic detection of Physical Cell Identifier (PCI) conflicts, sleeping cells, and
antenna faults: PCI conflicts, sleeping cells, and antenna faults are automatically
detected and reported, thus reducing the workload of manual network fault
location.

Comprehensive IP Transport
A wide variety of transmission ports are supported, such as FE/GE electrical ports,
FE/GE optical ports, and E1/T1 ports.
All-IP transport is supported. In addition, diversified network topologies are
supported, such as star, chain, and tree topologies.
Multiple QoS mechanisms are adopted to guarantee the transmission QoS, thus
providing highest capacity, implementing differentiated services, and meeting
QoS requirements of services.

Easy Installation and Low CAPEX for Operators
The DBS3900 LTE is compact, light, and easy to transport, and it also supports
distributed installation, thus reducing large scale construction engineering and saving
the CAPEX.
The BBU3900 can be installed on an indoor wall or in a standard cabinet. This reduces
unnecessary installation investment. The RRU can be mounted to a pole, tower, or
concrete wall. Flexible installation location and low space requirements reduce site
lease costs. The RRU can be installed close to the antenna system in order to reduce
the cost of feeders and power consumption.

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2 Architecture

2.1 Overview
The DBS3900 LTE features a distributed architecture. The two basic modules of the
DBS3900 LTE consist of the BBU3900 (BaseBand Unit) and Remote Radio Unit
(RRU). The BBU3900 and RRU are inter-connected through a standardized Common
Public Radio Interface (CPRI) using optical cables.
Auxiliary devices of the DBS3900 LTE are the supporting parts for the BBU3900 and
RRU. Auxiliary devices provide installation space for the BBU3900 and supply power
to the BBU3900 and RRU. Examples of auxiliary devices of the DBS3900 LTE are the
Advanced Power Module with heat-exchanger cooler (APM30H Ver.B), Integrated
Battery Backup System with direct cooler (IBBS200D Ver.B) or Integrated Battery
Backup System with TEC cooler (IBBS200T Ver.B), and Transmission Cabinet with
heat-exchanger cooler (TMC11H Ver.B). Flexible combinations of the two basic
modules and auxiliary devices can provide comprehensive site solutions that are
applicable to different scenarios.
Figure 2-1 shows the architecture of the DBS3900 LTE.

Figure 2-1 Architecture of the DBS3900 LTE

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2.2 BaseBand Unit
The BBU3900, a baseband unit, performs the following functions:
Provides ports for connection between the eNodeB and the MME or S-GW and
processes related transmission protocol stacks.
Provides CPRI ports for communication with the RRU and processes uplink and
downlink baseband signals.
Performs centralized management of the entire DBS3900 LTE in terms of
Operation and Maintenance (OM) and signaling processing.
Provides the OM channel for connection to Local Maintenance Terminal (LMT)
or iManager M2000.
Provides the clock port for clock synchronization, alarm monitoring port for
environment monitoring, and USB port for commissioning.

2.2.1 Exterior of the BBU3900
The BBU3900 provides a compact case structure with a size of 19 inches wide, 2 U
high, and 13 inches deep. Figure 2-2 shows the BBU3900.

Figure 2-2 BBU3900

2.2.2 Boards of the BBU3900
The BBU3900 is configured with the following mandatory boards and modules:
LTE Main Processing&Transmission Unit (LMPT): Manages the entire eNodeB
in terms of Operation and Maintenance (OM) and signaling processing and
provides clock signals for the BBU3900.
LTE BaseBand Processing Unit (LBBP): Processes the baseband signals and
CPRI signals.
Fan Unit (FAN): Controls the rotation of fans and checks the temperature of the
fan module. In addition, it performs heat dissipation for the BBU.
Universal Power and Environment Interface Unit (UPEU): Converts –48 V DC
power into +12 V DC and provides ports for transmission of two RS485 signals
and eight dry contact signals.
Figure 2-3 shows the typical configuration of the BBU3900.

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Figure 2-3 Typical configuration of the BBU3900

If an E1/T1 port is required, the BBU3900 must be configured with the Universal
Transmission Processing Unit (UTRP). The UTRP is optional.
If the Remote Global Positioning System (RGPS) and Building Integrated Timing Supply
System (BITS) clock reference sources are supported, the BBU3900 must be configured
with the Universal Satellite Clock Unit (USCU). The USCU is optional.

2.2.3 Ports on the BBU3900
Table 2-1 describes the ports on the boards of the BBU3900.

Table 2-1 Ports on the BBU3900
Module or Port Quantity Connector Description
Board

LMPT FE/GE optical 2 SFP Ports for transmission
port of traffic data on the
S1 and X2 interfaces
FE/GE 2 RJ-45 Ports for transmission
electrical port of traffic data on the
S1 and X2 interfaces
USB port 1 USB Port for loading
software
Test port 1 USB Port for test
Commissioning 1 RJ-45 Port for maintenance
Ethernet port on the LMT
GPS antenna 1 SMA Port for connection to
port the GPS antenna
LBBP CPRI port 6 SFP Ports between the
BBU3900 and the
RRU

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Module or Port Quantity Connector Description
Board

UPEU Power supply 1 3V3 Port for –48 V DC
socket power inputs
MON0 1 RJ-45 Ports for transmission
of RS485 monitoring
MON1 1 RJ-45 signals (each port
transmitting one
signal) and
connection to external
monitoring devices
EXT-ALM0 1 RJ-45 Ports for transmission
of dry contact alarm
EXT-ALM1 1 RJ-45 signals (each port
allowing four alarm
inputs) and
connection to external
alarm devices
UTRP E1/T1 2 DB26 Ports for transmission
of eight E1s/T1s. The
UTRP is configured
when an E1/T1 port is
required.
USCU RGPS port 2 PCB Ports for receiving
welded RGPS signals
wiring
terminal
BITS port 1 SMA Port for receiving
coaxial BITS signals
connector

2.3 RRU
The RRU is a remote radio unit, which performs modulation, demodulation, data
processing, and combining and dividing for baseband signals and RF signals.

2.3.1 Exterior of the RRU
The RRU can be installed on a pole, wall, or stand. In addition, the RRU can be
installed close to the antenna to shorten feeder length, reduce feeder loss, and improve
system coverage. For details about the technical specifications, see chapter 6
"Technical Specifications." Figure 2-4 shows the RRU3201/RRU3808, Figure 2-5
shows the RRU3203, Figure 2-6 shows the RRU3908, Figure 2-7 shows the RRU3220,
and Figure 2-8 shows the RRU3222.

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Figure 2-4 RRU3201/RRU3808

Figure 2-5 RRU3203

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Figure 2-6 RRU3908

Figure 2-7 RRU3220

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Figure 2-8 RRU3222

2.3.2 Ports on the RRU
The RRU has a modular structure. Its external ports are located at the bottom of the
module and also in the cabling cavity. Table 2-2 describes the ports on the
RRU3201/RRU3203/RRU3808, Table 2-3 describes the ports on the RRU3908, Table
2-4 describes the ports on the RRU3220, and Table 2-5 describes the ports on the
RRU3222.

Table 2-2 Ports on the RRU3201/RRU3203RRU3808

Port Connector Quantity Description
CPRI port DLC 2 Ports for connection
between the BBU3900 and
the RRU or cascading of
RRUs
RF port DIN 2 Ports connected to antennas
Power supply socket OT terminal 2 Ports for –48 V DC power
Remote Electrical Tilt DB9 1 Port for connection to the
(RET)/MON port RCU

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Table 2-3 Ports on the RRU3908

CPRI port DLC 2 Ports for connection
between the BBU3900 and
the RRU or cascading of
RRUs
RF port DIN 2 Ports connected to antennas
Port for the RF 2W2 1 Port for RRU cascading
jumper between
cascaded RRU
modules
Alarm port DB15 1 Alarm port
Power supply socket OT terminal 2 Ports for –48 V DC power
RET port DB9 1 Port for connection to the
RCU

Ports for connection between
CPRI port DLC 2 the BBU3900 and the RRU or
cascading of RRUs
RF port DIN female 2 Ports connected to antennas
Alarm Port DB15 1 Alarm port
Power supply Easy Power
2 Ports for –48 V DC power
socket Connector
Port for connection to the
RET port DB9 1
RCU

Ports for connection between
CPRI port DLC 2 the BBU3900 and the RRU or
cascading of RRUs
RF port DIN female 2 Ports connected to antennas
Power supply Easy Power
1 Ports for –48 V DC power
socket Connector

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Port for connection to the
RET port QDB9 1
RCU

2.4 Auxiliary Devices
The auxiliary devices provided by Huawei can be combined with the basic modules
(BBU3900 and RRU) in a flexible manner, to support diverse installation scenarios.
Examples of basic DBS3900 LTE auxiliary devices are APM30H Ver.B, IBBS200D
Ver.B, IBBS200T Ver.B, and TMC11H Ver.B. The auxiliary devices feature compact
size, easy transportation, stack installation, and battery backup power.

2.4.1 Advanced Power Module with Heat-Exchanger Cooler
The Advanced Power Module with heat-exchanger cooler (APM30H Ver.B) is a power
system for outdoor applications. It provides distributed eNodeBs with power supply
and backup batteries for outdoor scenarios. It also provides space for the BBU3900
and customer equipment to facilitate fast network deployment.
The APM30H Ver.B is compact, lightweight, and can be installed on the pole or
ground.
Figure 2-9 shows the APM30H Ver.B.

Figure 2-9 Exterior and internal structure of the APM30H Ver.B

Table 2-6 Technical specifications of the APM30H Ver.B

Item Specification
Dimensions (H x W x D) 700 mm x 600 mm x 480 mm
(Base excluded)
Typical weight ≤ 91 kg
(Transmission devices
excluded)
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Item Specification
Working temperature –40°C to +50°C
Solar radiation: ≤ 1120±10% W/m2
A heater is required when the temperature is
lower than –20°C.
50°C to 55°C (short-term work)

2.4.2 Integrated Battery Backup System
When power backup of long duration is required, the Integrated Battery Backup
System with direct cooler (IBBS200D Ver.B) or Integrated Battery Backup System
with TEC cooler (IBBS200T Ver.B) can be added. The IBBS200D/T Ver.B, applicable
to outdoor scenarios, provides a maximum of –48 V DC 184 Ah backup power
through battery groups.
The IBBS200D Ver.B and IBBS200T Ver.B are compact, light weight, and easy to
transport.
Figure 2-10 shows the IBBS200D Ver.B and IBBS200T Ver.B.

Figure 2-10 Exterior and internal structure of the IBBS200D Ver.B and IBBS200T Ver.B

Table 2-7 Technical specifications of the IBBS200D Ver.B and IBBS200T Ver.B

Item Specification (IBBS200D Specification
Ver.B) (IBBS200T Ver.B)
Dimensions (H x W x D) 700 mm x 600 mm x 480 700 mm x 600 mm x
(Base excluded) mm 480 mm
Typical weight (Batteries ≤ 50 kg ≤ 70 kg
excluded)

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Item Specification (IBBS200D Specification
Ver.B) (IBBS200T Ver.B)

Working temperature –40°C to +45°C –20°C to +50°C
Solar radiation: ≤ Solar radiation: ≤
1120±10% W/m2 1120±10% W/m2
A heater is required when
the temperature is lower
than –20°C.

As high temperature greatly affects the lifecycle of the batteries, the IBBS200T Ver.B, which is
more heat-tolerant, is recommended in high-temperature areas and the IBBS200D Ver.B can be
used in other areas.

2.4.3 Transmission Cabinet with Heat-Exchanger Cooler
When more space is required for transmission equipment, the Transmission Cabinet
with heat-exchanger cooler (TMC11H Ver.B) can be added.
The TMC11H Ver.B is compact, lightweight, and easy to transport. The TMC11H
Ver.B dissipates heat through fans.
Figure 2-11shows the TMC11H Ver.B.

Figure 2-11 Exterior and internal structure of TMC11H Ver.B

Table 2-8 Technical specifications of the TMC11H Ver.B

Item Specification
Dimensions (H x W x D) 700 mm x 600 mm x 480 mm
(Base excluded)

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Item Specification
Weight of the cabinet ≤ 57 kg
(Transmission devices and
the BBU excluded)
Working temperature –40°C to +50°C
Solar radiation: ≤ 1120±10% W/m2
A heater is required when the temperature is
lower than –20°C.

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3 Application Scenarios

3.1 Overview
With continuous capacity expansion of the mobile network, site selection for the base
station has turned into a bottleneck during network deployment. Site selection
becomes increasingly complex to implement and requires additional investment in
network deployment.
The DBS3900 LTE is characterized by its small footprint, easy installation, and low
power consumption. Therefore, the DBS3900 LTE can be easily installed in a spare
space at an existing site. The RRU is also compact and light. It can be installed close
to the antenna to reduce feeder loss and to improve system coverage. With these
characteristics, the DBS3900 LTE fully addresses operators' concern over site
acquisition and reduces network deployment time. Therefore, the DBS3900 LTE
enables operators to efficiently deploy a high-performance LTE network with a low
Total Cost of Ownership (TCO) by minimizing the investment in electricity, space,
and manpower.
The DBS3900 LTE has flexible applications to meet the requirement of fast network
deployment in different scenarios.

3.2 BBU+RRU+APM30H Ver.B
If an outdoor site for the DBS3900 LTE has only a 220 V AC power supply available,
the integrated configuration of the BBU+RRU+APM30H Ver.B can be used.
In this scenario, the BBU3900 and transmission equipment are installed in the
APM30H Ver.B for protection. The RRU can be installed flexibly. The BBU3900,
RRU, and auxiliary devices can be combined in many ways to meet different
requirements for power distribution, power backup, and expansion of transmission
equipment space. Figure 3-1 shows the application scenario.

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Figure 3-1 Application scenario of BBU+RRU+APM30H Ver.B

This application scenario has the following features:
The APM30H Ver.B can provide a maximum of 7 U space for installing
equipment.
The APM30H Ver.B provides installation space and outdoor protection for the
BBU3900 and supplies –48 V DC power to the BBU3900 and RRU. In addition,
the APM30H Ver.B provides battery backup for short-term use, manages batteries,
and performs surge protection.
The RRU can be installed on a wall, pole, or tower.

3.3 BBU+RRU+TMC11H Ver.B
If an outdoor site for the DBS3900 LTE has only a –48 V DC power supply available
and a larger space for equipment is required, the BBU+RRU+TMC11H Ver.B solution
can be adopted.
The BBU3900 and transmission equipment are installed in the TMC11H Ver.B, which
provides a large installation space. The BBU3900, RRU, and auxiliary devices can be
combined in many ways to meet different requirements for power distribution, power
backup, and expansion of transmission equipment space. Figure 3-2 shows the
application scenario.

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Figure 3-2 Application scenario of BBU+RRU+TMC11H Ver.B

The TMC11H Ver.B provides a maximum of 7 U space for installing transmission
equipment.
The TMC11H Ver.B provides installation space and outdoor protection for the
BBU3900 and supplies –48 V DC power to the BBU3900 and RRU.

3.4 BBU+RRU+19-Inch Cabinet
If an indoor site for the DBS3900 LTE has only a –48 V DC power supply available
and a new backup power supply system is required, the BBU3900 can be installed in a
standard cabinet, which provides a 19-inch-wide and 2 U-high space. This is the
BBU+RRU+19-inch cabinet solution.
The BBU3900 can be installed in an existing 19-inch rack or cabinet to share the
power supply system and transmission system with the existing network. Figure 3-3
shows the application scenario.

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Figure 3-3 Application scenario of BBU+RRU+19-inch cabinet

3.5 BBU+RRU+Indoor Wall
If an indoor site for the DBS3900 LTE has only a –48 V DC power supply available,
the BBU+RRU+indoor wall solution can be adopted.
The BBU3900 is installed on the indoor wall. Therefore, the BBU occupies a small
space and uses the existing power supply system and transmission system. Figure 3-4
shows the application scenario.

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Figure 3-4 Application scenario of BBU+RRU+indoor wall

3.6 BBU+RRU+ICR
If an indoor site for the DBS3900 LTE has a 220 V AC or –48 V DC power supply
available and a new backup power supply is required, the BBU3900 can be installed in
an Indoor Centralized Rack (ICR), which provides a 19-inch-wide and 3 U-high space.
The RRU can be installed in an RF subrack. This is the BBU+RRU+ICR solution.
A maximum of six RRUs can be installed in a centralized manner. The BBU3900 can
be installed in an existing ICR to share the power supply system and the transmission
system in the existing network. Figure 3-5 shows the application scenario.

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Figure 3-5 Application scenario of BBU+RRU+ICR

3.7 BBU+RRU+IMB03
If an indoor site for the DBS3900 LTE has a 220 V AC or –48 V DC power supply
available, the BBU3900 can be installed in an Indoor Mini Box (IMB03), which
provides a 19-inch-wide and 3 U-high space. This is the BBU+RRU+IMB03 solution.
As shown in Figure 3-6, the BBU3900 and power equipment are installed in the
IMB03, which provides indoor protection.

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Figure 3-6 Application scenario of BBU+RRU +IMB03

If the input power is a 220 V AC, the IMB03 houses the BBU3900 and AC/DC
power equipment. If the input power is a –48 V DC, the IMB03 houses the
BBU3900 and DCDU-03B.
The IMB03 can be installed on a wall or stand.

3.8 BBU+RRU+OMB
If an outdoor site for the DBS3900 LTE has a 220 V AC or –48 V DC power supply
available, the BBU3900 can be installed in an Outdoor Mini Box (OMB). This is the
BBU+RRU+OMB solution.
As shown in Figure 3-7, the BBU3900 and power equipment are installed in the OMB,
which provides indoor protection.

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Figure 3-7 Application scenario of BBU+RRU+OMB

If the input power is a 220 V AC, the OMB houses the BBU3900 and AC/DC
power equipment. If the input power is a –48 V DC, the OMB houses the
BBU3900 and DCDU.
The OMB can be installed on a wall or placed in various scenarios with limited
installation space.

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4 Configuration

This chapter describes the typical configurations and maximum configurations of the
DBS3900 LTE.

4.1 Typical Configuration
Table 4-1 describes the typical configurations of the DBS3900, with different
bandwidths, MIMO configurations, and site configurations.

Table 4-1 Typical configurations of the DBS3900

Configuration MIMO LBBPP RRU
3 x 5 MHz/10 MHz 4x2 MIMO 1 LBBP 6 RRUs

LBBP in this document represents LBBPc. For details about the configuration of an
LBBPb, see the corresponding configuration manual.
The specific RRU model is determined by the supported frequency band.

4.2 Maximum Configuration
Table 4-2 describes the maximum configurations of the DBS3900 with different
bandwidths, MIMO configurations, and site configurations.

V2.0 (2011-01-20) Page 27 of 47


Table 4-2 Maximum configurations of the DBS3900

Configuration MIMO LBBP RRU
6 x 1.4 MHz/3 MHz/5 MHz/10 4x2 MIMO 2 LBBPs 12 RRUs
MHz
6 x 15 MHz/20 MHz 4x2 MIMO 6 LBBPs 12 RRUs
12 x 1.4 MHz/3 MHz/5 MHz/10 2x2 MIMO 2 LBBPs 12 RRUs
MHz
12 x 15 MHz/20 MHz 2x2 MIMO 4 LBBPs 12 RRUs

The specific RRU model is determined by the supported frequency band.

V2.0 (2011-01-20) Page 28 of 47


5 Operation and Maintenance

5.1 Overview
The DBS3900 LTE, which has the same OM functions as the eNodeB, is one of the
eNodeB product portfolios launched by Huawei. The eNodeB supports the OM system
that is based on the Man Machine Language (MML) and the Graphic User Interface
(GUI). The OM system enables a hardware-independent OM mechanism and provides
powerful OM functions to meet various OM requirements.
The eNodeB supports local maintenance and remote maintenance. In the OM system,
the maintenance terminal supports the Virtual Local Area Network (VLAN), and can
access the eNodeB through the Intranet or Internet, which makes maintenance more
convenient and flexible.

5.2 OM System
Figure 5-1 shows the OM system of the eNodeB.

V2.0 (2011-01-20) Page 29 of 47


Figure 5-1 OM system

iManager M2000

IP Network
eNodeB
LMT

LMT

The OM system consists of the Local Maintenance Terminal (LMT) and the iManager
M2000 Mobile Element Management System (M2000). The LMT is used to maintain
a single eNodeB. To perform maintenance operations, you can connect the LMT to the
eNodeB through an Ethernet cable (local maintenance) or IP network (remote
maintenance). The M2000 is used to remotely maintain multiple eNodeBs of different
software versions.
The functions of the OM system are as follows:
The LMT performs functions such as data configuration, alarm monitoring,
commissioning, and software upgrade. The LMT supports both MML and GUI
modes.
The M2000 performs functions such as data configuration, alarm monitoring,
performance monitoring, and software upgrade. The M2000 supports both MML
and GUI modes.

5.3 Benefits
5.3.1 Configuration Management
The configuration management of the eNodeB features easy accessibility, high
reliability, and excellent scalability.
Easy accessibility
− The OM system supports a user-friendly GUI mode.
− The eNodeB provides configuration forms for the common configuration
scenarios, such as eNodeB startup, capacity expansion, and eNodeB
replacement. In addition, the eNodeB offers scenario-specific configuration

V2.0 (2011-01-20) Page 30 of 47


wizards in GUI mode. This scenario-oriented design helps to minimize the
requirement for the user to manually enter the configuration information, and
speeds up the deployment.
− Huawei also provides the networking planning tool iPlan, which is used to
import data to the form for initial configuration, thus lowering efforts needed
for network planners and network optimization engineers.
High reliability
− The eNodeB provides data configuration, query, export, backup, and
restoration functions. At the same time, it can synchronize data with the
M2000.
− The eNodeB updates all the configuration commands delivered to the eNodeB
and checks the configuration restrictions, thus avoiding impact of
maloperations.
− The CME supports configuration rollback in batches. Therefore, when the
user discovers abnormal running or malfunctions of the system after the
configuration, the user can run a rollback command to restore data.
Excellent scalability
− Configuration management through the northbound network management
system (NMS) is supported.
− The user can add, remove, or modify eNodeB configurations through MML
commands.
− The user can use MML commands and the iSStar of the M2000 to customize
functions of the M2000, for example, to customize troubleshooting
procedures.

5.3.2 Fault Management
The fault management of the eNodeB provides easy fault localization, high reliability,
and various tracing and monitoring methods.
Easy fault localization
− Alarm handling suggestions are offered for every alarm, which helps the user
to locate and rectify the fault.
− For localization methods, alarm handling involves related maintenance and
required tools.
− For KPI level service failures, the eNodeB offers methods to rectify faults,
which helps the user to locate and solve the problem quickly and accurately.
− The eNodeB supports the alarm correlation function. For all the faults caused
by a radical cause, the eNodeB reports only one radical alarm and its eventual
impact on the system. The user can easily locate the radical cause of the alarm
through the alarm correlation, and then rectify the fault.
High reliability
− Fault detection is comprehensive and accurate. The eNodeB provides the fault
detection function for the hardware, software, antenna, transmission, cell, and
environment, in which the fault detection for the environment is performed in
terms of door status control, infrared, smoke, water damage, and temperature.
In addition, the system allows customization of external alarms.
− Fault isolation and self-healing of the eNodeB also ensure that the local
failure does not affect the other parts of the system. In addition, the eNodeB
V2.0 (2011-01-20) Page 31 of 47


can set up the cell again with degraded specifications to minimize the impact
of the failure on services.
Various tracing and monitoring methods
− The eNodeB supports various tracing functions to check the compatibility of
interfaces. The tracing functions are to trace the standard signaling of one UE
in the entire network, in a cell, or on standard interfaces. The user can trace
operations of the eNodeB on the LMT/M2000 in real time, or browse and
analyze tracing results later.
− The eNodeB supports the real-time performance monitoring in GUI mode,
thus facilitating the user to locate performance failures speedily. The user can
monitor the transmission quality of user-level or cell-level air interface, air
interface performance and interference, and quality of transmission links in
real time.
− The eNodeB supports one-click collection and upload of system logs. When
the user fails to locate or rectify faults, this function helps the user to collect
the detailed field information. Then the user can provide the fault information
to Huawei Customer Service Center for more efficient troubleshooting.

5.3.3 Performance Management
The performance management features multiple monitoring and reporting periods and
appropriate measurement point allocation, which meets requirements in different
scenarios.
Multiple monitoring and reporting periods
− The eNodeB can collect performance counters every 15 or 60 minutes. The
default value is 60 minutes.
− The eNodeB supports real-time monitoring of KPIs for a duration of 1 minute.
Appropriate measurement point allocation
− The eNodeB supports performance measurement of system-level or cell-level,
of neighboring cells, on interfaces, and of device usage, which helps the user
to locate faults.

5.3.4 Security Management
The security management provides network-level and user-level security services.
The eNodeB supports the following services to ensure the security, integrity, and
availability of the system:
Encryption of key information of the user
User account management and authentication
Control over access rights of the user
Support of security protocols such as FTP Over SSL (FTPS), Secure Socket
Layer (SSL), and IP Security (IPSec)
Automatic record of the account usage information
Security certificate

V2.0 (2011-01-20) Page 32 of 47


5.3.5 Software Management
The software management of the eNodeB features easy accessibility, high efficiency,
and small impact on services during software upgrade.
Easy accessibility
− The user can perform health check on the eNodeB before and after an upgrade,
back up, download, and activate the software step by step through the upgrade
wizard of the M2000. In addition, this function facilitates the user to query the
upgrade status and result.
− The eNodeB automatically upgrades the configuration data during upgrade.
Therefore, the user need not prepare the configuration data.
High efficiency
− The eNodeB supports remote upgrade and batch upgrade.
− The eNodeB supports upgrade strategy management. After the upgrade
strategy is set, the eNodeB can perform software upgrade automatically.
Small impact on services during software upgrade
− The eNodeB supports fast upgrade rollback. The user can perform version
rollback through one command, thus reducing the impact of upgrade failures
on the system.
− The eNodeB supports the management of patch packages. The eNodeB
supports hot patches, so that software corrections can be handled without
interrupting system operation.

5.3.6 Deployment Management
The eNodeB deployment solutions consist of automatic identification of the eNodeB
and initial configuration through a USB disk. In addition, local commissioning is not
required. All these functions contribute to the ease of the deployment work and
shortening of work time. The field engineer only needs to install the hardware during
site deployment. No PC is required.
The automatic eNodeB identification function of GPS binding and unique ID
binding is supported.
The user can download the software and data of the eNodeB through a USB disk,
thus saving a lot of time especially when the transmission bandwidth to the NE
and the NMS is limited.
Because local commissioning is not required, the software commissioning is
performed in the network management center instead of on site. The user can
check and accept the site deployment in the network management center.

5.3.7 Equipment Management
The eNodeB offers several user-friendly management functions.
Multiple functions
− The eNodeB provides functions such as fault detection, data configuration,
status management, and inventory reporting for the main equipment,
mechanical and electric equipment, GPS, and the RET antenna.
Easy accessibility

V2.0 (2011-01-20) Page 33 of 47


− The eNodeB can report the inventory to the M2000 automatically.

5.3.8 Inventory Management
The inventory management function offers various, accurate, and real-time
management services for the user inventory.
Various services
− The inventory management function helps to provide the inventory
information of the eNodeB, such as hardware, physical ports, transmission
resources, system configuration, and software version.
Accurate and real-time services
− The eNodeB collects the inventory information periodically. The eNodeB
synchronizes the inventory information on a daily basis.

V2.0 (2011-01-20) Page 34 of 47


6 Technical Specifications

The technical specifications for the DBS3900 include the capacity, equipment
specifications, and reliability and compliance standards.

6.1 Capacity Specifications
Table 6-1 describes the capacity specifications of the DBS3900.

Table 6-1 Capacity specifications

Item Specification
Maximum number of 4x2 MIMO: 6 cells (5 MHz/10 MHz/15 MHz/20 MHz)
cells 2x2 MIMO: 12 cells (5 MHz/10 MHz/15 MHz/20 MHz)

Maximum throughput Downlink rate at the MAC layer: 150 Mbit/s
per cell (20 MHz) Uplink rate at the MAC layer: 70 Mbit/s

Maximum throughput Downlink: 450 Mbit/s
per eNodeB Uplink: 300 Mbit/s
Maximum number of 1 LBBP configured (bandwidth of 1.4 MHz): 1008
UEs in 1 LBBP configured (bandwidth of 3 MHz/5 MHz/10
RRC-connected MHz/15 MHz/20 MHz): 1800
states in an eNodeB
More than 1 LBBP configured (bandwidth of 1.4 MHz):
2016
More than 1 LBBP configured (bandwidth of 3 MHz/5
MHz/10 MHz/15 MHz/20 MHz): 3600
DRB Maximum number of DRBs supported per user is 8.

V2.0 (2011-01-20) Page 35 of 47


6.2 Equipment Specifications
6.2.1 BBU3900
Table 6-2 describes the technical specifications of the BBU3900.

Table 6-2 Technical specifications of the BBU3900
Item Specification
Dimensions (H x W x 86 mm x 442 mm x 310 mm
D)
Weight ≤ 12 kg (full configuration)
Input power –48 V DC; voltage range: –38.4 V DC to –57 V DC
Temperature –20°C to +50°C (long-term work)
Relative humidity 5% RH to 95% RH
Air pressure 70 kPa to 106 kPa
IP rating IP20
Clock synchronization Ethernet (ITU-T G.8261), GPS, IEEE1588v2,clock over
IP,OCXO free oscillation,1PPS,E1/T1
CPRI Supporting six CPRI ports per LBBP.
The standard CPRI 4.1 port is supported and is
backward compatible with the CPRI 3.0 port.
Transmission port Two FE/GE electrical ports
Or two FE/GE optical ports
Or one FE/GE electrical port and one FE/GE optical
port

6.2.2 RRU3201 (2T2R)
Table 6-3 describes the technical specifications of the RRU3201.

Table 6-3 Technical specifications of the RRU3201

Item Specification
Duplex mode FDD

V2.0 (2011-01-20) Page 36 of 47


Item Specification
Frequency Frequency band RX band (MHz) TX band (MHz) Suppor
band and ting
bandwidth bandwi
dth
(MHz)
700 MHz (Band 777 to 787 746 to 756 1.4/3/5
13) /10/15/
20
2.6 GHz (Band 2500 to 2570 2620 to 2690 5/10/1
7) Band C: 2500 Band C: 2620 5/20
to 2520 to 2640
Band D: 2510 Band D: 2630
to 2560 to 2680
Band E: 2550 Band E: 2670
to 2570 to 2690
Dimensions 480 mm x 270 mm x 140 mm (18 L, without the housing)
(H x W x D) 485 mm x 285 mm x 170 mm (23.5 L, with the housing)
Weight ≤ 17.5 kg (without the housing)
≤ 19 kg (with the housing)
Input power –48 V DC (–36 V DC to –57 V DC)
Maximum 2 x 40 W
transmit
power
Temperature –40°C to +50°C (with solar radiation of 1,120 W/m²)
–40°C to +55°C (without solar radiation)
Relative 5% RH to 100% RH
humidity
IP rating IP65

6.2.3 RRU3203 (2T2R)


Item Specification
Duplex mode FDD

V2.0 (2011-01-20) Page 37 of 47


Item Specification
Frequency Frequency band RX band (MHz) TX band Supportin
band and (MHz) g
bandwidth bandwidt
h (MHz)
700 MHz (Band 698 to 716 728 to 746 1.4/3/5/1
12) 0/15
Dimensions 480 mm x 356 mm x 140 mm (24 L without the housing)
(H x W x D) 485 mm x 381 mm x 170 mm (31.4 L with the housing)
Weight ≤ 22 kg (without the housing)
Maximum 2 x 40 W
transmit
power
humidity
IP rating IP65

6.2.4 RRU3908 (2T2R)


Item Specification
Duplex mode FDD
Frequency Frequency band RX band (MHz) TX band Supporting
band and (MHz) bandwidth
bandwidth (MHz)
900 MHz (Band 880 to 915 925 to 960 1.4/3/5/10/
8) 15/20

V2.0 (2011-01-20) Page 38 of 47


Item Specification
1800 MHz 1710 to 1785 1805 to 1880 5/10/20
(Band 3) 1710 to 1755 1805 to
1740 to 1785 1850
1835 to
1880
Weight ≤ 24 kg (without the housing)
Maximum 1800 MHz: 2 x 30 W
transmit 900 MHz: 2 x 40 W
power
humidity
IP rating IP65

6.2.5 RRU3220 (2T2R)


Item Specification
Duplex mode FDD
Frequency Frequency band RX band (MHz) TX band Supporti
band and (MHz) ng
bandwidth bandwid
th
(MHz)
DD 800 MHz 832 to 862 791 to 821 5/10/15/
832 to 847 791 to 806 20
842 to 862 801 to 821
(H x W x D) 400 mm x 240 mm x 160 mm (15 L with the housing)
V2.0 (2011-01-20) Page 39 of 47


Item Specification
Maximum 2 x 40 W
transmit
power
humidity
IP rating IP65

6.2.6 RRU3222 (2T2R)


Item Specification
Duplex mode FDD
Frequency Frequency band RX band (MHz) TX band Supporti
band and (MHz) ng
bandwidth bandwid
th
(MHz)
DD 800 MHz 832 to 862 791 to 821 5/10/15/
20
(H x W x D) 485 mm x 300 mm x 170 mm (24 L with the housing)
Maximum 2 x 40 W
transmit
power

V2.0 (2011-01-20) Page 40 of 47


Item Specification
humidity
IP rating IP65

6.2.7 RRU3808 (2T2R)


Item Specification
Duplex mode FDD
Frequency Frequency band RX band (MHz) TX band Supporting
band and (MHz) bandwidth
bandwidth (MHz)
AWS (Band 4) 1710 to 1755 2110 to 2155 1.4/3/5/10/
15/20
2.1 GHz (Band 1920 to 1980 2110 to 2170 5/10/15/20
1)
Maximum 2 x 40 W
transmit
power
humidity
IP rating IP65

V2.0 (2011-01-20) Page 41 of 47


6.3 Reliability Specifications
Table 6-9 describes the reliability specifications of the DBS3900.

Table 6-9 Reliability specifications

Item Specification
System availability ≥ 99.999%
MTBF ≥ 155,000 hours
MTTR ≤ 1 hour
System restarting time < 180s

6.4 Compliance Standards
Table 6-10 describes the compliance standards of the DBS3900.

Table 6-10 Compliance standards
Item Specification

Storage ETSI EN300019-1-1 V2.1.4 (2003-04) class1.2
"Weather-protected, not temperature-controlled storage locations"
Transportatio ETSI EN300019-1-2 V2.1.4 (2003-04) class 2.3 "Public
n transportation"
Anti-seismic IEC 60068-2-57 (1999-11) Environmental testing – Part 2-57: Tests
performance – Test Ff: Vibration – Time-history method
YD5083-99: Interim Provisions for Test of Anti-seismic
Performances of Telecommunications Equipment
(Telecommunication Industry Standard of the People's Republic of
China)

V2.0 (2011-01-20) Page 42 of 47


Item Specification
EMC The eNodeB meets the Electromagnetic Compatibility (EMC)
requirements and complies with the following standards:
R&TTE Directive 1999/5/EC
R&TTE Directive 89/336/EEC
3GPP TS 36.113
ETSI EN 301489-1/23
ETSI EN 301908-1 V2.2.1 (2003-10)
ITU-R SM.329-10
The eNodeB is Conformite Europeenne (CE) certified.

V2.0 (2011-01-20) Page 43 of 47


A Acronyms and Abbreviations

A
AMC Automatic Modulation Control
ANR Automatic Neighboring Relation
APM Advanced Power Module

B
BBU BaseBand Unit
BITS Building Integrated Timing Supply System

C
CAPEX Capital Expenditure
CDMA Code Division Multiple Access
CME Configuration Management Express
CPRI Common Public Radio Interface

D
DBS Distribution Base Station
DRB Data radio bearer

E
E-UTRAN Evolved UMTS Terrestrial Radio Access Network
EPC Evolved Packet Core

V2.0 (2011-01-20) Page 44 of 47


F
FAN Fan Unit
FE Fast Ethernet

G
GE Gigabit Ethernet
GPS Global Positioning System
GSM Global System for Mobile communications

H
HRPD High Rate Packet Data

I
IBBS Integrated Battery Backup System
ICIC Inter-cell Interference Coordination
IP Internet Protocol

L
LBBP LTE BaseBand Processing Unit
LMPT LTE Main Processing&Transmission Unit
LMT Local Maintenance Terminal
LTE Long Term Evolution

M
MIMO Multiple Input Multiple Output
MRO Mobility Robust Optimization
MME Mobility Management Entity
MTBF Mean Time Between Failures
MTTR Mean Time To Recovery

O
OM Operation and Maintenance

V2.0 (2011-01-20) Page 45 of 47


OMB Outdoor Mini Box
OPEX Operating Expenditure

P
P-GW Packet Data Network Gateway
PCI Physical Cell Identifier

R
RGPS Remote Global Positioning System
RCU Remote Control Unit
RET Remote Electrical Tilt
RRM Radio Resource Management
RRU Remote Radio Unit

S
S-GW Serving Gateway
SON Self-Organizing Network

T
TCO Total Cost of Ownership
TMC Transmission Cabinet
TA Tracking Area

U
UE User Equipment
UMTS Universal Mobile Telecommunications System
UPEU Universal Power and Environment Interface Unit
USB Universal Serial Bus
UTRA UMTS Terrestrial Radio Access
UTRAN UMTS Terrestrial Radio Access Network

V2.0 (2011-01-20) Page 46 of 47

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