dbs3900 lte product description

eRAN2.1 DBS3900 LTE Product Description

Issue 2.4

Date 2011-11-17

HUAWEI TECHNOLOGIES CO., LTD.

Issue 2.4 (2011-11-17) Huawei Proprietary and Confidential

Copyright © Huawei Technologies Co., Ltd

i

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Huawei Technologies Co., Ltd.

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mailto:[email protected]

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Product Description Contents



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Contents

1 DBS3900 LTE Overview ................................................................................................................... 1

1.1 Positioning........................................................................................................................................................ 1

1.2 Benefits ............................................................................................................................................................ 2

2 Architecture ......................................................................................................................................... 4

2.1 Overview .......................................................................................................................................................... 4

2.2 Baseband Unit .................................................................................................................................................. 4

2.2.1 Exterior of the BBU3900 ........................................................................................................................ 5

2.2.2 Boards of the BBU3900 .......................................................................................................................... 5

2.2.3 Ports on the BBU3900 ............................................................................................................................ 6

2.3 Remote Radio Unit ........................................................................................................................................... 7

2.3.1 Exterior of the RRUs ............................................................................................................................... 8

2.3.2 Ports on the RRUs ................................................................................................................................. 11

2.4 Auxiliary Devices ........................................................................................................................................... 13

2.4.1 Advanced Power Module with Heat-Exchanger ................................................................................... 14

2.4.2 Integrated Battery Backup System ........................................................................................................ 14

2.4.3 Transmission Cabinet with Heat-Exchanger ......................................................................................... 15

3 Usage Scenarios ................................................................................................................................ 17

3.1 Overview ........................................................................................................................................................ 17

3.2 BBU+RRU+APM30H ................................................................................................................................... 17

3.3 BBU+RRU+TMC11H.................................................................................................................................... 18

3.4 BBU+RRU+19-Inch Cabinet ......................................................................................................................... 19

3.5 BBU+RRU+Indoor Wall ................................................................................................................................ 20

3.6 BBU+RRU+ICR ............................................................................................................................................ 21

3.7 BBU+RRU+IMB03 ....................................................................................................................................... 22

3.8 BBU+RRU+OMB .......................................................................................................................................... 23

4 Configurations .................................................................................................................................. 25

4.1 Typical Configurations ................................................................................................................................... 25

4.2 Maximum Configurations .............................................................................................................................. 26

5 Operation and Maintenance ......................................................................................................... 27

5.1 Overview ........................................................................................................................................................ 27

5.2 OM System..................................................................................................................................................... 28

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Product Description Contents



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5.3 Benefits .......................................................................................................................................................... 28

5.3.1 Configuration Management................................................................................................................... 28

5.3.2 Fault Management................................................................................................................................. 29

5.3.3 Performance Management..................................................................................................................... 30

5.3.4 Security Management............................................................................................................................ 30

5.3.5 Software Management .......................................................................................................................... 30

5.3.6 Deployment Management ..................................................................................................................... 31

5.3.7 Equipment Management ....................................................................................................................... 31

5.3.8 Inventory Management ......................................................................................................................... 31

6 Technical Specifications ................................................................................................................ 33

6.1 Capacity Specifications .................................................................................................................................. 33

6.2 Equipment Specifications ............................................................................................................................... 34

6.2.1 APM30H ............................................................................................................................................... 34

6.2.2 BBU3900 .............................................................................................................................................. 34

6.2.3 RRU3201 (2T2R) .................................................................................................................................. 35

6.2.4 RRU3203 (2T2R) .................................................................................................................................. 36

6.2.5 RRU3908 V1/RRU3908 V2 (2T2R) ..................................................................................................... 37

6.2.6 RRU3220 (2T2R) .................................................................................................................................. 37

6.2.7 RRU3222 (2T2R) .................................................................................................................................. 39

6.2.8 RRU3240 (2T4R) .................................................................................................................................. 39

6.2.9 RRU3808 (2T2R) .................................................................................................................................. 40

6.2.10 RRU3221 (2T2R) ................................................................................................................................ 41

6.2.11 RRU3928 (2T2R) ................................................................................................................................ 41

6.2.12 RRU3929 (2T2R) ................................................................................................................................ 42

6.3 Reliability Specifications ............................................................................................................................... 43

6.4 Compliance Standards .................................................................................................................................... 43

A Acronyms and Abbreviations ...................................................................................................... 45

eRAN2.1 DBS3900 LTE

Product Description 1 DBS3900 LTE Overview



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1 DBS3900 LTE Overview

Long Term Evolution (LTE) is an evolved telecom standard. It provides various technical

benefits to Evolved Universal Terrestrial Radio Access Network (E-UTRAN), including:

Reduced service delay

Higher user data rates

Increased spectral efficiency

Optimized support for packet services

Improved system capacity and coverage

LTE has flexible bandwidths, enhanced modulation schemes, and effective scheduling. In

addition, LTE allows operators to use both original and new spectral resources to provide data

and voice services.

1.1 Positioning

Focusing on customer-oriented innovation, Huawei launches a series of LTE products in its

SingleBTS product portfolios, including the distributed E-UTRAN NodeB (eNodeB)

DBS3900 LTE. The DBS3900 LTE (referred to as DBS3900 in this document) fully utilizes

Huawei platform resources and uses a variety of technologies to meet the challenges of

mobile network development.

The eNodeB is used for radio access in the LTE system. The eNodeB mainly performs Radio

Resource Management (RRM) functions such as air interface management, access control,

mobility control, and User Equipment (UE) resource allocation. Multiple eNodeBs constitute

an E-UTRAN system.

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

Figure 1-1 eNodeB in the network

EPC: Evolved Packet Core MME: Mobility Management Entity

S-GW: Serving Gateway

1.2 Benefits

Advanced Base Station Platform, GSM and UMTS Co-Network, RAN Sharing, and Smooth Evolution

As a SingleRAN solution, the DBS3900 enables smooth network evolution and reduces

the cost of LTE site deployment by sharing Huawei SingleBTS hardware platform and

equipment with other base stations, such as the DBS3900 GSM, DBS3900 WCDMA,

DBS3900 CDMA, or DBS3900 WiMAX.

The DBS3900 can share the network with GSM or UMTS base stations and support

handovers between LTE and the PS domain of the GERAN/UTRAN/CDMA2000. This

facilitates LTE network deployment in the existing GSM or UMTS network.

The DBS3900 supports RAN sharing. Different operators can share the RAN network,

reducing capital expenditure (CAPEX).

The BBU3900 is the baseband unit (BBU) of the DBS3900. The BBU3900 supports

multi-mode applications. Therefore, boards of different modes can be installed in one

BBU3900.

An RRU is a remote radio unit of the DBS3900. The BBU3900 and RRUs can be

flexibly configured on the basis of capacity and coverage requirements. Using the

approach of stack installation, capacity expansion can be easily achieved by means of

board/module stacking, rather than equipment replacement. Therefore, the cost of

hardware upgrade is significantly reduced.

Large Capacity, Extensive Coverage, and High Throughput The DBS3900 provides large capacity. A single eNodeB supports a maximum of 3600

UEs in RRC_CONNECTED mode.

The DBS3900 provides extensive coverage. It can cover a maximum cell radius of 100

km when using functions such as multi-antenna RX diversity and uplink inter-cell

interference coordination (ICIC).

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The DBS3900 provides high throughput. It can provide a maximum throughput of 450

Mbit/s in the downlink and 300 Mbit/s in the uplink when using functions such as

64QAM, uplink and downlink multiple-input multiple-output (MIMO), and ICIC.

Enhanced SON Function Automatic configuration

The DBS3900 can automatically obtain connection parameters, download software,

configure data, conduct tests, and upload information. This facilitates preparation for

data configuration, reduces manual handling during site deployment, and minimizes

operational expenditure (OPEX).

Automatic Neighbor Relation (ANR)

The DBS3900 can automatically maintain the integrity and validity of the neighboring

cell list by automatically detecting missing neighboring cells and evaluating neighboring

cell relationships. This increases handover success rates 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,

reducing the workload of manual identification of network faults.

Comprehensive IP Transport Various transmission ports are provided, such as FE/GE electrical ports, FE/GE optical

ports, and E1/T1 ports.

Internet Protocol (IP) transport is supported. In addition, diversified network topologies

are supported, such as star, chain, and tree topologies.

Multiple Quality of Service (QoS) mechanisms are applied to provide high capacity,

implement differentiated services, and meet the QoS requirements of services.

Easy Installation and Low CAPEX

The DBS3900 is compact, light, and easy to transport, and it also supports distributed

installation, 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 the

installation investment. The RRU can be mounted onto a pole, tower, or concrete wall.

Flexible installation locations and low space requirements reduce site lease costs. The RRU

can be installed close to the antenna system to reduce the cost of feeders and power

consumption.

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Product Description 2 Architecture



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2 Architecture

2.1 Overview The DBS3900 features a distributed architecture. It has two types of basic modules: BBU3900

and RRU. The BBU3900 and RRUs are connected using fiber optic cables through common

public radio interface (CPRI) ports.

Auxiliary devices of the DBS3900 are the supporting parts for the BBU3900 and RRUs.

Auxiliary devices provide installation space for the BBU3900 and supply power to the

BBU3900 and RRUs. Examples of auxiliary devices of the DBS3900 are the advanced power

module with heat-exchanger (APM30H), Integrated Battery Backup System with direct cooler

(IBBS200D) or Integrated Battery Backup System with TEC (IBBS200T), and transmission

cabinet with heat-exchanger (TMC11H). Flexible combinations of the basic modules and

auxiliary devices can provide diverse site solutions.

Figure 2-1 shows the architecture of the DBS3900.

Figure 2-1 Architecture of the DBS3900

2.2 Baseband Unit The BBU3900, a baseband unit, performs the following functions:

Provides ports for connection to the MME or S-GW and processes related transmission

protocols.

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Provides CPRI ports for communication with RRUs and processes uplink and downlink

baseband signals.

Manages the entire base station by means of operation and maintenance (OM) and

signaling message processing.

Provides an OM channel towards the local maintenance terminal (LMT) or iManager

M2000.

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

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

storage device.

2.2.1 Exterior of the BBU3900

The BBU3900 has a compact case structure measuring 19 inch wide, 2 U high, and 13 inch

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 and transmission unit (LMPT): Manages the entire eNodeB in

terms of OM, processes signaling, and provides clock signals for the BBU3900.

LTE baseband processing unit (LBBP): Processes baseband signals and CPRI signals.

Fan unit (FAN): Controls the rotation of fans, checks the temperature of the fan module,

and 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 signal inputs and eight

Boolean signal inputs.

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Figure 2-3 shows the panel of a BBU3900.

Figure 2-3 Panel of a BBU3900

If an E1/T1 port is required, the BBU3900 must be configured with a universal transmission

processing unit (UTRP). Otherwise, the UTRP is unnecessary.

To obtain timing signals from a Remote Global Positioning System (RGPS) or Building Integrated Timing Supply System (BITS), the BBU3900 must be configured with a universal satellite clock

unit (USCU). Otherwise, the USCU is unnecessary.

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 Board

Port Quantity Connector Function

LMPT FE/GE optical

port

2 SFP Transmitting traffic

data on the S1 and X2

interfaces

FE/GE electrical

port

2 RJ45 Transmitting traffic

data on the S1 and X2

interfaces

USB port 1 USB Loading software

TST port 1 USB Testing

Commissioning

Ethernet port

1 RJ45 Local maintenance

GPS antenna port 1 SMA Connected to a GPS

antenna

LBBP CPRI port 6 SFP Interface between the

BBU3900 and RRUs

UPEU Power supply

socket

1 3V3 Receiving –48 V DC

power

MON0 1 RJ45 Transmitting RS485

monitoring signals and

connecting to external

monitoring devices

MON1 1 RJ45

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Module or

Board

Port Quantity Connector Function

EXT-ALM0 1 RJ45 Transmitting dry

contact signals and

connecting to external

alarm devices

EXT-ALM1 1 RJ45

UTRP E1/T1 2 DB26 Transmitting eight

E1s/T1s; configured

when E1/T1 ports are

required

UFLPb GE port 2 RJ45 Receiving two GE

electrical signals

GE port 2 RJ45 Transmitting two GE

electrical signals

USCU RGPS port 2 PCB welded

wiring

terminal

Receiving RGPS

signals

BITS port 1 SMA coaxial

connector

Receiving BITS signals

2.3 Remote Radio Unit

RRUs modulate and demodulate baseband signals and RF signals, process data, amplify

power, and detect standing waves.

The DBS3900 equipped with Ver.B or Ver.C cabinets supports the following RRU models:

RRU3201, RRU3808, RRU3203, RRU3220, RRU3222, RRU3908 V1, RRU3908 V2, RRU3240,

RRU3221, and RRU3928.

Only the DBS3900 equipped with Ver.C cabinet supports RRU3929.

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2.3.1 Exterior of the RRUs

RRUs can be installed on a pole, wall, or stand. They can also be installed close to antennas to

shorten the 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

RRUs.

Figure 2-4 Exterior of the RRUs

RRU Model Exterior

RRU3201/RR

U3808

RRU3203

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RRU Model Exterior

RRU3908 V1

RRU3908 V2

RRU3220

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RRU Model Exterior

RRU3221

RRU3222

RRU3240

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RRU Model Exterior

RRU3928/RR

U3929

2.3.2 Ports on the RRUs

An RRU has a modular structure. Its external ports are located at the bottom of the module

and also in the cabling cavity. Following tables describe the ports on the RRUs.

Table 2-2 Ports on the RRU3201/RRU3203/RRU3808

Port Connector Quantity Function

CPRI port DLC 2 Connected to the BBU3900, or

to another RRU for cascading

of RRUs

RF port DIN 2 Connected to an antenna

Power supply socket OT terminal 2 Receiving –48 V DC power

Remote electrical tilt

(RET)/MON port

DB9 1 Connected to a remote control

unit (RCU)

Table 2-3 Ports on the RRU3908 V1/RRU3908 V2


CPRI port DLC 2 Connected to the BBU3900, or

to another RRU for cascading

of RRUs


Port for the RF jumper

between cascaded RRUs

2W2 1 Cascading of RRUs

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Alarm port DB15 1 Alarm port

Power supply socket on

the DC RRU3908 V1

OT terminal 1 Receiving –48 V DC power

Power supply socket on

the DC RRU3908 V2

Easy power

receptacle

(pressfit type)

1 Receiving –48 V DC power

RET port DB9 1 Connected to an RCU

Table 2-4 Ports on the RRU3220


CPRI port DLC 2 Connected to the BBU3900, or to

another RRU for cascading of

RRUs

RF port DIN female 2 Connected to an antenna

Alarm Port DB15 1 Alarm port

Power supply socket Easy power

receptacle

(pressfit type)



Table 2-5 Ports on the RRU3221/RRU3928/RRU3929


CPRI port SFP 2 Connected to the BBU3900, or to


RRUs


receptacle

(pressfit type)




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RRUs


receptacle

(pressfit type)



RET port QDB9 1 Connected to an RCU





RRUs



receptacle

(pressfit type)

connector


Remote electrical tilt

(RET)/MON port

DB9 1 Connected to a remote control

unit (RCU)

2.4 Auxiliary Devices

Both the APM30H and TMC11H are of two versions: Ver.B and Ver.C. If the cabinet version is not

specified, the description is applicable to the cabinet of either version. If the cabinet version is specified, the description is applicable only to the cabinet of that version.

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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 auxiliary devices are APM30H, IBBS200D, IBBS200T, and TMC11H. The

auxiliary devices feature compact size, easy transportation, stack installation, and battery

backup power.

2.4.1 Advanced Power Module with Heat-Exchanger

The APM30H Ver.B and Ver.C have the same exterior, but the APM30H Ver.C is improved in

terms of heat dissipation and power supply capability.

The APM30H 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 is compact and lightweight, and can be installed on the pole or ground.

Figure 2-5 shows the APM30H.

Figure 2-5 Exterior and interior of the APM30H

Table 2-8 Technical specifications of the APM30H

Item Specification

Dimensions (H x W x D) (Base

excluded)

700 mm x 600 mm x 480 mm

Typical weight (Transmission

devices excluded)

APM30H Ver.B: ≤ 91 kg

APM30H Ver.C: ≤ 87 kg

Working temperature –40°C to +50°C with solar radiation ≤ 1120±10%

W/m2. A heater is required when the temperature is

lower than –20°C.

50°C to 55°C (working in a short time)

2.4.2 Integrated Battery Backup System

When power backup of long duration is required, the IBBS200D or IBBS200T can be added.

The IBBS200D/T, applicable to outdoor scenarios, provides a maximum of –48 V DC 184 Ah

backup power by using storage battery packs.

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The IBBS200D and IBBS200T are compact, lightweight, and easy to transport.

Figure 2-6 shows the IBBS200D and IBBS200T.

Figure 2-6 Exterior and interior of the IBBS200D and IBBS200T

Table 2-9 Technical specifications of the IBBS200D and IBBS200T

Item Specification (IBBS200D) Specification

(IBBS200T)

Dimensions (H x W x D)

(Base excluded)

700 mm x 600 mm x 480 mm 700 mm x 600 mm x

480 mm

Typical weight (Batteries

excluded)

≤ 50 kg ≤ 70 kg

Working temperature –40°C to +45°C

Solar radiation: ≤ 1120±10%

W/m2

A heater is required when the

temperature is lower than

–20°C.

–20°C to +50°C

Solar radiation: ≤

1120±10% W/m2

As high temperature greatly affects the lifecycle of the storage batteries, the IBBS200T, which is more

heat-tolerant, is recommended in high-temperature areas and the IBBS200D can be used in other areas.

2.4.3 Transmission Cabinet with Heat-Exchanger

The TMC11H Ver.B and Ver.C have the same exterior, but the TMC11H Ver.C is improved in

terms of heat dissipation and power supply capability.

When more space is required for transmission equipment, the TMC11H can be added. The

TMC11H provides installation space for the BBU3900 and customer equipment in outdoor

scenarios.

The TMC11H is compact, lightweight, and easy to transport. The TMC11H supports heat

dissipation using fans.

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Figure 2-7 shows the TMC11H.

Figure 2-7 Exterior and interior of the TMC11H

Table 2-10 Technical specifications of the TMC11H

Item Specification

Dimensions (H x W x D) (Base

excluded)

700 mm x 600 mm x 480 mm

Weight of the cabinet

(Transmission devices and the

BBU excluded)

≤ 57 kg

Working temperature –40°C to +50°C with solar radiation ≤ 1120±10%

W/m2. A heater is required when the temperature is

lower than –20°C.


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Product Description 3 Usage Scenarios



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3 Usage 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 is characterized by its small footprint, easy installation, and low-power

consumption. Therefore, the DBS3900 can be easily installed in a spare space at an existing

site. Each RRU is also compact and light. It can be installed close to an antenna to reduce

feeder loss and to improve system coverage. With these characteristics, the DBS3900 fully

addresses operators' concern over site acquisition and reduces network deployment time.

Therefore, the DBS3900 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 has flexible applications to meet the requirement of fast network deployment in

different scenarios.

3.2 BBU+RRU+APM30H If an outdoor site for the DBS3900 has only a 220 V AC power supply available, the

integrated configuration of the BBU+RRU+APM30H can be used.

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In this scenario, the BBU3900 and transmission equipment are installed in the APM30H 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 usage scenario.

Figure 3-1 Usage scenario of BBU+RRU+APM30H

This usage scenario has the following features:

The APM30H can provide a maximum of 7 U space for installing equipment.

The APM30H provides installation space and outdoor protection for the BBU3900 and

supplies –48 V DC power to the BBU3900 and RRU. In addition, the APM30H 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

If an outdoor site for the DBS3900 has only a –48 V DC power supply available and a larger

space for equipment is required, the BBU+RRU+TMC11H solution can be adopted.

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The BBU3900 and transmission equipment are installed in the TMC11H, 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 usage scenario.

Figure 3-2 Usage scenario of BBU+RRU+TMC11H


The TMC11H provides a maximum of 7 U space for installing transmission equipment.

The TMC11H 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 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 transport system with the existing network. Figure 3-3 shows the usage

scenario.

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

3.5 BBU+RRU+Indoor Wall

If an indoor site for the DBS3900 has only a –48 V DC power supply available, the

BBU+RRU+indoor wall solution can be adopted.

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The BBU3900 is installed on the indoor wall. Therefore, the BBU occupies a small space and

uses the existing power supply system and transport system. Figure 3-4 shows the usage

scenario.

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

3.6 BBU+RRU+ICR

If an indoor site for the DBS3900 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 a baseband subrack of

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 of the ICR. This is the BBU+RRU+ICR solution.

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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 transport system in the

existing network. Figure 3-5 shows the usage scenario.

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

3.7 BBU+RRU+IMB03 If an indoor site for the DBS3900 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.

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As shown in Figure 3-6, the BBU3900 and power equipment are installed in the IMB03,

which provides indoor protection.

Figure 3-6 Usage 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 direct

current distribution unit (DCDU).

The IMB03 can be installed on a wall or stand.


3.8 BBU+RRU+OMB

If an outdoor site for the DBS3900 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.

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As shown in Figure 3-7, the BBU3900 and power equipment are installed in the OMB, which

provides indoor protection.

Figure 3-7 Usage 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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Product Description 4 Configurations



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4 Configurations

This chapter describes the typical configurations and maximum configurations of the

DBS3900.

4.1 Typical Configurations

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 Quantity of LBBPc Boards

Quantity of RRUs

3 x 5 MHz/10 MHz 4 x 2 MIMO 1 6

3 x 15 MHz/20 MHz 4 x 2 MIMO 3 6

6 x 5 MHz/10 MHz 2 x 2 MIMO 1 6

3 x 15 MHz/20 MHz 2 x 2 MIMO 1 3

NOTE The specific RRU model is determined according to the supported frequency band.

eRAN2.1 DBS3900 LTE

Product Description 4 Configurations



26

4.2 Maximum Configurations

Table 4-2 and Table 4-3 describe the maximum configurations of the DBS3900 equipped with

Ver.B or Ver.C cabinets in terms of different bandwidths, MIMO configurations, and site

configurations.

Table 4-2 Maximum configurations of the DBS3900 equipped with Ver.B cabinets

Configuration MIMO Quantity of LBBPc Boards

Quantity of RRUs

6 x 1.4 MHz/3 MHz/5 MHz/10 MHz 4 x 2 MIMO 2 12

3 x 15 MHz/20 MHz 4 x 2 MIMO 3 6

12 x 1.4 MHz/3 MHz/5 MHz/10

MHz

2 x 2 MIMO 2 12

9 x 15 MHz/20 MHz 2 x 2 MIMO 3 9

Table 4-3 Maximum configurations of the DBS3900 equipped with Ver.C cabinets

Configuration MIMO Quantity of

LBBPc Boards

Quantity

of RRUs

6 x 1.4 MHz/3 MHz/5 MHz/10 MHz 4 x 2 MIMO 2 12

6 x 15 MHz/20 MHz 4 x 2 MIMO 6 12

12 x 1.4 MHz/3 MHz/5 MHz/10

MHz

2 x 2 MIMO 2 12

12 x 15 MHz/20 MHz 2 x 2 MIMO 4 12

NOTE

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

eRAN2.1 DBS3900 LTE

Product Description 5 Operation and Maintenance



27

5 Operation and Maintenance

5.1 Overview The DBS3900, which has all OM functions of eNodeBs, 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 Graphical 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 using the Intranet or Internet, which makes maintenance more convenient and

flexible.

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28

5.2 OM System

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

Figure 5-1 OM system

The OM system consists of the LMT and the iManager M2000 (M2000 for short). The LMT

is used to maintain a single eNodeB. To perform maintenance operations, you can connect the

LMT to the eNodeB by using an Ethernet cable (local maintenance) or IP network (remote

maintenance). The M2000, a mobile element management system provided by Huawei, 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.

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29

− 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 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, 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, avoiding impact of maloperations.

− The Configuration Management Express (CME), one of the components on the

M2000, 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 by using the northbound network management system

(NMS) is supported.

− The user can add, remove, or modify eNodeB configurations by running 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 Key Performance Indicator (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 by referring to

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.

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30

− 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 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, 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 about the user

User account management and authentication

Control over access rights of the user

Support of security protocols such as File Transfer Protocol Over SSL (FTPS), Secure

Socket Layer (SSL), and Internet Protocol security (IPSec)

Automatic record of the account usage information

Security certificate

5.3.5 Software Management

The software management of the eNodeB features easy accessibility, high efficiency, and

small impact on services during software upgrade.

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31

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 by using 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

by running one command, 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 by using a USB storage device. 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 Global Positioning System (GPS)

binding and unique ID binding is supported.

The user can download the software and data of the eNodeB by using a USB storage

device, saving a lot of time especially when the transmission bandwidth to the network

element (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 RET antenna.

Easy accessibility

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

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32

The inventory management function helps to provide the inventory information about 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.

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Product Description 6 Technical Specifications



33

6 Technical Specifications

The technical specifications of 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

cells (DBS3900 Ver.B)

4 x 2 MIMO: 6 cells (1.4 MHz/3 MHz/5 MHz/10 MHz)

4 x 2 MIMO: 3 cells (15 MHz/20 MHz)

2 x 2 MIMO: 12 cells (1.4 MHz/3 MHz/5 MHz/10 MHz)

2 x 2 MIMO: 9 cells (15 MHz/20 MHz)

Maximum number of

cells(DBS3900 Ver.C)

4 x 2 MIMO: 6 cells (1.4 MHz/3 MHz/5 MHz/10 MHz/15

MHz/20 MHz)

2 x 2 MIMO: 12 cells (1.4 MHz/3 MHz/5 MHz/10 MHz/15

MHz/20 MHz)

Maximum throughput

per cell (20 MHz)

Downlink rate at the Media Access Control (MAC) layer: 150

Mbit/s

Uplink rate at the MAC layer: 100Mbit/s (2 x 4 MU-MIMO)

Maximum throughput

per eNodeB

Downlink: 450 Mbit/s

Uplink: 300 Mbit/s

Maximum number of

UEs in

RRC_CONNECTED

mode in an eNodeB

One LBBP configured (bandwidth of 1.4 MHz): 1008

One LBBP configured (bandwidth of 3 MHz/5 MHz/10

MHz/15 MHz/20 MHz): 1800

More than one LBBP configured (bandwidth of 1.4 MHz):

2016

More than one LBBP configured (bandwidth of 3 MHz/5

MHz/10 MHz/15 MHz/20 MHz): 3600

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34

Item Specification

Maximum number of

concurrent Data Radio

Bearers (DRBs) per UE

8

6.2 Equipment Specifications

6.2.1 APM30H

Table 6-3 describes the technical specifications of the APM30H.

Table 6-2 Technical specifications of the APM30H

Item Specification

Dimensions (H x W x D) 700mm × 600mm × 480mm

Weight APM30H Ver.B: 91kg (full configuration)

APM30H Ver.C: 87kg (full configuration)

Input power - 48V DC ( -38.4V ～ -57V)

+220V AC ( +176V ～ +280V, 50Hz/60Hz)

+110V AC (+90V ～ +135V, 50Hz/60Hz)

Temperature -40℃ to +50℃ (working in a long time)

+50℃ to +55℃ (working in a short time)

Relative humidity 5% RH to 100% RH

Atmospheric pressure 70 kPa to 106 kPa

Ingress Protection (IP)

rating IP55

6.2.2 BBU3900

Table 6-3 describes the technical specifications of the BBU3900.

Table 6-3 Technical specifications of the BBU3900

Item Specification

Dimensions (H x W x D) 86 mm x 442 mm x 310 mm

Weight ≤ 12 kg (full configuration)

Input power –48 V DC; voltage range: –38.4 V DC to –57 V DC

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35

Temperature –20°C to +50°C (working in a long time)


Relative humidity 5% RH to 95% RH

Atmospheric pressure 70 kPa to 106 kPa

Ingress Protection (IP)

rating IP20

Clock synchronization Ethernet (ITU-T G.8261), GPS, IEEE1588 V2, clock over IP,

OCXO free oscillation, 1PPS+TOD, E1/T1, GLONASS

CPRI port Supporting six CPRI ports per LBBP.

The standard CPRI 4.0 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

Two optional E1/T1 ports. Each port provides four E1/T1s.

6.2.3 RRU3201 (2T2R)

Table 6-4 describes the technical specifications of the RRU3201.

Table 6-4 Technical specifications of the RRU3201

Item Specification

Duplex mode FDD

Frequency band

and bandwidth Frequency band RX band (MHz) TX band (MHz) Bandwi

dth

(MHz)

700 MHz (Band

13)

777 to 787 746 to 756 5/10

2.6 GHz (Band 7) Band C: 2500 to

2520

Band D: 2510 to

2560

Band E: 2550 to

2570

Band C: 2620 to

2640

Band D: 2630 to

2680

Band E: 2670 to

2690

5/10/15

/20

Dimensions (H

x W x D)

480 mm x 270 mm x 140 mm (18 L without the housing)

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)

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36

Item Specification

Maximum

output power 2 x 40 W

Temperature –40°C to +50°C (with solar radiation of 1120 W/m²)

–40°C to +55°C (without solar radiation)

Relative

humidity 5% RH to 100% RH

Atmospheric

pressure 70 kPa to 106 kPa

IP rating IP65

6.2.4 RRU3203 (2T2R)



Item Specification

Duplex mode FDD

Frequency band

and bandwidth Frequency band RX band (MHz) TX band (MHz) Bandwidt

h (MHz)

700 MHz (Band

12)

698 to 716 728 to 746 1.4/3/5/10/

15

Dimensions (H

x W x D)



Weight ≤ 21 kg (without the housing)



Maximum




Relative


Atmospheric


IP rating IP65

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37

6.2.5 RRU3908 V1/RRU3908 V2 (2T2R)

Table 6-6 describes the technical specifications of the RRU3908 V1/RRU3908 V2.

Table 6-6 Technical specifications of the RRU3908 V1/RRU3908 V2

Item Specification

Duplex mode FDD

Frequency band

and bandwidth Frequency band RX band (MHz) TX band

(MHz) Bandwidth

(MHz)

RRU3908 V2: 900

MHz (Band 8)

880 to 915 925 to 960 1.4/3/5/10/1

5/20

RRU3908 V1:

1800 MHz (Band

3)

1710 to 1785

1710 to 1755

1740 to 1785

1805 to 1880

1805 to

1850

1835 to

1880

5/10/20

Dimensions (H

x W x D)


485 mm x 380 mm x 170 mm (31 L with the housing)




Maximum

output power

RRU3908 V1: 1800 MHz: 2 x 30 W

RRU3908 V2: 900 MHz: 2 x 40 W



Relative


Atmospheric


IP rating IP65

6.2.6 RRU3220 (2T2R)



Item Specification

Duplex mode FDD

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38

Item Specification

Frequency band

and bandwidth Frequency band RX band (MHz) TX band (MHz) Bandwid

th (MHz)

800 MHz (DD

band 20)

832 to 862

832 to 847

842 to 862

791 to 821

791 to 806

801 to 821

5/10/15/

20

Dimensions (H

x W x D)






Maximum




Relative


Atmospheric


IP rating IP65

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39

6.2.7 RRU3222 (2T2R)



Item Specification

Duplex mode FDD

Frequency band


th (MHz)

800 MHz (DD

band 20)

832 to 862 791 to 821 5/10/15/

20

Dimensions (H

x W x D)






Maximum




Relative


Atmospheric


IP rating IP65

6.2.8 RRU3240 (2T4R)



Item Specification

Duplex mode FDD

Frequency band

and bandwidth Frequency band RX band (MHz) TX band (MHz) Bandwidth

(MHz)

2.6 GHz (Band 7) 2500 to 2570 2620 to 2690 5/10/15/20

Dimensions (H

x W x D)



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40

Item Specification




Maximum




Relative


Atmospheric


IP rating IP65

6.2.9 RRU3808 (2T2R)



Item Specification

Duplex mode FDD

Frequency band


(MHz) Bandwidth

(MHz)

AWS (Band 4) 1710 to 1755 2110 to 2155 1.4/3/5/10/1

5/20

2.1 GHz (Band 1) 1920 to 1980 2110 to 2170 5/10/15/20

Dimensions (H

x W x D)






Maximum




Relative


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41

Item Specification

Atmospheric


IP rating IP65

6.2.10 RRU3221 (2T2R)



Item Specification

Duplex mode FDD

Frequency band


th (MHz)

2.6 GHz (Band 7) 2500 to 2570 2620 to 2690 5/10/15/

20

Dimensions (H

x W x D)






Maximum




Relative


Atmospheric


IP rating IP65

6.2.11 RRU3928 (2T2R)


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42


Item Specification

Duplex mode FDD

Frequency band


(MHz) Bandwidth

(MHz)

900 MHz (Band

8)

880 to 915 925 to 960 1.4/3/5/10/1

5/20

1800 MHz (Band

3)

1710 to 1785 1805 to 1880 1.4/3/5/10/1

5/20

Dimensions (H

x W x D)






Maximum




Relative


Atmospheric


IP rating IP65

6.2.12 RRU3929 (2T2R)



Item Specification

Duplex mode FDD

Frequency band


(MHz) Bandwidth

(MHz)

900 MHz (Band 8) 880 to 915 925 to 960 1.4/3/5/10/1

5/20

1800 MHz (Band 3) 1710 to 1785 1805 to 1880 1.4/3/5/10/1

5/20

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43

Item Specification

Dimensions (H

x W x D)






Maximum




Relative


Atmospheric


IP rating IP65

6.3 Reliability Specifications

Table 6-14 describes the reliability specifications of the DBS3900.

Table 6-14 Reliability specifications

Item Specification

System availability ≥ 99.999%

Mean Time Between Failures (MTBF) ≥ 155,000 hours

Mean Time To Repair (MTTR) ≤ 1 hour

System restarting time < 180s

6.4 Compliance Standards Table 6-15 describes the compliance standards for the DBS3900.

Table 6-15 Compliance standards

Item Specification

Storage ETSI EN300019-1-1 V2.1.4 (2003-04) class1.2 "Weather-protected, not

temperature-controlled storage locations"

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44

Item Specification

Transportation ETSI EN300019-1-2 V2.1.4 (2003-04) class 2.3 "Public transportation"

Anti-seismic

performance

IEC 60068-2-57 (1999-11) Environmental testing – Part 2-57: Tests –

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)

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.

eRAN2.1 DBS3900 LTE

Product Description A Acronyms and Abbreviations



45

A Acronyms and Abbreviations

A

ANR Automatic Neighbor 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

DCDU direct current distribution unit

DRB Data Radio Bearer

E

eNodeB E-UTRAN NodeB

E-UTRAN Evolved UMTS Terrestrial Radio Access Network

EPC Evolved Packet Core

http://3ms.huawei.com/term/docMaintain/termOperate.do?method=listTermAndDefinition&f_id=20091010000332&fd_id=47365&node_id=1-9

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46

F

FAN fan unit

FE Fast Ethernet

FTPS File Transfer Protocol Over SSL

G

GE Gigabit Ethernet

GPS Global Positioning System

GSM Global System for Mobile communications

GUI Graphical User Interface

I

IBBS Integrated Battery Backup System

ICIC inter-cell interference coordination

ICR Indoor Centralized Rack

IP Ingress Protection

IP Internet Protocol

IPSec Internet Protocol security

K

KPI Key Performance Indicator

L

LBBP LTE baseband processing unit

LMPT LTE main processing and transmission unit

LMT local maintenance terminal

LTE Long Term Evolution

M

MAC Media Access Control

MIMO multiple-input multiple-output

MME Mobility Management Entity

MML man-machine language

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47

MTBF Mean Time Between Failures

MTTR Mean Time To Repair

N

NE network element

NMS network management system

O

OM operation and maintenance

OMB Outdoor Mini Box

OPEX operational expenditure

P

PCI Physical Cell Identifier

PPS Pulses Per Second

Q

QoS Quality of Service

R

RAN Radio Access Network

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

SSL Secure Socket Layer

T

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48

TCO Total Cost of Ownership

TEC thermoelectric cooling unit

TMC transmission cabinet

U

UE User Equipment

UMTS Universal Mobile Telecommunications System

UPEU universal power and environment interface unit

USB Universal Serial Bus

USCU universal satellite clock unit

UTRA UMTS Terrestrial Radio Access

UTRAN UMTS Terrestrial Radio Access Network

UTRP universal transmission processing unit

V

VLAN Virtual Local Area Network

W

WCDMA Wideband Code Division Multiple Access

WiMAX Worldwide Interoperability for Microwave Access

dbs3900 lte product description

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