Product Description HUAWEI BTS3900A

Product Description

HUAWEI BTS3900 V300R008

Issue 02

Date 2008-05-06

HUAWEI TECHNOLOGIES CO., LTD.

HUAWEI BTS3900 V300R008 Product Description

Issue 02 (2008-05-06) HUAWEI TECHNOLOGIES PROPRIETARY Page 2 of 52

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About This Document

Author Prepared by Dong Yujiao Date 2008-05-03 Reviewed by Peng Jianhua, Feng Baoshun,

Chen Ping, Xu Kai, Liu Jianyun, Jin Yan, He Jia, Xia Jun, and Zhao Ming

Date 2008-05-05

Approved by Feng Baoshun Date 2008-05-06

Organization This document describes the BTS3900 in terms of features, system architecture, functions, OM, reliability, and technical specifications.

The following table describes the organization of this document.

Chapter Content

1 Introduction to BTS3900

This chapter provides a general description of the BTS3900.

2 System Architecture

This chapter describes the structure, components, and recommended configuration of the BTS3900.

3 Ports This chapter describes the physical ports of the BTS3900.

4 Product Features

This chapter describes the features of the BTS3900.

5 OM System This chapter describes the components and functions of the OM system.

6 Reliability This chapter introduces the measures taken in reliability design of the BTS3900 in terms of system, hardware, and software.

7 Technical Specifications

This chapter lists the main performance and engineering specifications of the BTS3900.



Chapter Content

Appendix A Technical Standards

The appendix lists the technical standards complied by the BTS3900.

Appendix B Glossary

The appendix lists the glossary.

Appendix C Acronyms and Abbreviations

The appendix lists the acronyms and abbreviations.



Change History Issue Description Date Author Approved by

01 Initial commercial release

2008-03-04 Dong Yujiao Feng Baoshun

02 The power consumption is modified.

2008-05-06 Dong Yujiao Feng Baoshun



Contents

1 Introduction to BTS3900 ................................................................................................9 1.1 Overview .......................................................................................................................................... 9 1.2 Appearance of the BTS3900 .......................................................................................................... 10 1.3 Benefits of the BTS3900 .................................................................................................................11

1.3.1 Efficient Site Usage and Fast Networking ..............................................................................11 1.3.2 Cost-Effective Solutions for Capacity and Coverage .............................................................11 1.3.3 Green Communication Design ...............................................................................................11 1.3.4 Reliable OM with Minimized OPEX ........................................................................................11 1.3.5 Smooth Evolution to Future-Oriented Network ......................................................................11

2 System Architecture .....................................................................................................13 2.1 BTS3900 Cabinet ........................................................................................................................... 13

2.1.1 Structure of the BTS3900 Cabinet (48 V DC) ..................................................................... 13 2.1.2 Structure of the BTS3900 Cabinet (+24 V DC) ..................................................................... 14 2.1.3 Structure of the BTS3900 Cabinet (220 V AC)...................................................................... 15

2.2 BTS3900 Modules.......................................................................................................................... 16 2.2.1 BBU3900 ............................................................................................................................... 16 2.2.2 DRFU..................................................................................................................................... 19 2.2.3 GATM..................................................................................................................................... 21 2.2.4 DCDU-01 ............................................................................................................................... 22 2.2.5 Power Subrack (DC/DC) ....................................................................................................... 22 2.2.6 Power Subrack (AC/DC)........................................................................................................ 23 2.2.7 FAN Unit ................................................................................................................................ 24

2.3 Configuration of the BTS3900........................................................................................................ 24

3 Ports...............................................................................................................................26 3.1 Power Ports.................................................................................................................................... 26 3.2 Transmission Ports......................................................................................................................... 26 3.3 Alarm Ports..................................................................................................................................... 27 3.4 Other Ports ..................................................................................................................................... 27

4 Product Features ..........................................................................................................29 4.1 High Capacity ................................................................................................................................. 29 4.2 Wide Coverage............................................................................................................................... 29 4.3 Multiple Frequency Bands.............................................................................................................. 29 4.4 Easy Installation ............................................................................................................................. 29 4.5 Flexible Networking........................................................................................................................ 30



4.6 Convenient OM .............................................................................................................................. 30 4.7 Various Transmission Modes ......................................................................................................... 30 4.8 Enhanced Antenna System............................................................................................................ 30 4.9 Co-Antenna on the Same Band ..................................................................................................... 31 4.10 Good Environment Adaptability.................................................................................................... 31 4.11 Smooth Capacity Expansion and Evolution ................................................................................. 32 4.12 Flexible Clock Synchronization Modes ........................................................................................ 32

5 OM System ....................................................................................................................34 5.1 OM System..................................................................................................................................... 34 5.2 OM Functions ................................................................................................................................. 35

5.2.1 Equipment Management ....................................................................................................... 35 5.2.2 Software Management .......................................................................................................... 35 5.2.3 Configuration Management ................................................................................................... 35 5.2.4 Service Management............................................................................................................. 36 5.2.5 Performance Management.................................................................................................... 36 5.2.6 Security Management............................................................................................................ 36 5.2.7 Alarm Management ............................................................................................................... 36 5.2.8 Environment Monitoring......................................................................................................... 36

6 Reliability.......................................................................................................................37 6.1 System Reliability ........................................................................................................................... 37 6.2 Hardware Reliability ....................................................................................................................... 37 6.3 Software Reliability......................................................................................................................... 38

6.3.1 Data Redundancy.................................................................................................................. 38 6.3.2 Error Tolerance ...................................................................................................................... 38

7 Technical Specifications ..............................................................................................40 7.1 RF Specifications............................................................................................................................ 40 7.2 Mechanical Specifications .............................................................................................................. 41 7.3 Power Specifications ...................................................................................................................... 41 7.4 Surge Protection Specifications ..................................................................................................... 42 7.5 Environment Specifications ............................................................................................................ 43

Appendix A Technical Standards....................................................................................45 A.1 EMC Standards.............................................................................................................................. 45 A.2 Surge Protection Standards........................................................................................................... 45 A.3 Safety Standards............................................................................................................................ 46 A.4 Environment Standards ................................................................................................................. 46

A.4.1 Operating Environment Standards........................................................................................ 46 A.4.2 Transportation Standards ...................................................................................................... 46 A.4.3 Storage Standard .................................................................................................................. 46

A.5 Physical Protection Standard......................................................................................................... 46

Appendix B Glossary.......................................................................................................47



Appendix C Acronyms and Abbreviations ....................................................................51


Issue 02 (2008-05-06) Commercial in Confidence Page 9 of 52

1 Introduction to BTS3900 1.1 Overview

The BTS3900 is an indoor macro base station, which is a member of the 3900 GSM BTS family. The 3900 GSM BTS family is the fourth generation BTSs developed by Huawei. The family products are classified into indoor macro BTSs, outdoor separated macro BTSs, and DBSs. Through combination of associated BTS types, the 3900 GSM BTS family enables fast networking with low cost in various scenarios. Table 1-1 lists the products in the 3900 GSM BTS family.

Table 1-1 Products in the 3900 GSM BTS family

BTS Type Model Max. Number of TRXs per Cabinet

Application Scenario

Indoor macro BTS

BTS3900 12 Densely populated areas with high traffic volume

Areas that require wide coverage

Areas where the construction cost of equipment room is high or the space resource is limited

Outdoor separated macro BTS

BTS3900A 12 Urban/suburban/rural areas with high traffic volume

Areas where site acquisition is difficult or the construction cost of equipment room is high

Distributed base station

DBS3900 12 Urban/suburban/rural areas with high traffic volume

Areas where site acquisition is difficult

Areas where the construction cost of equipment room is high or the space resource is limited



1.2 Appearance of the BTS3900 The BTS3900 houses the baseband unit (BBU3900) and the double radio filter unit (DRFU). The BTS3900 cabinet is classified into the BTS3900 cabinet (48 V DC), BTS3900 cabinet (+24 V DC), and the BTS3900 cabinet (220 V AC) with the power input. The three types of BTS3900 cabinets support stack installation.

Figure 1-1 shows a single BTS3900 cabinet (48 V DC) and two BTS3900 cabinets (48 V DC) in stack mode.

Figure 1-1 Appearance of the BTS3900 cabinet



1.3 Benefits of the BTS3900 The indoor macro BTS3900 adopts the unified module design, and thus allows multiple radio access technologies (RATs) in one cabinet. It is small in size and light in weight, and supports smooth evolution to the Long Term Evolution (LTE).

1.3.1 Efficient Site Usage and Fast Networking The BTS3900 is one of the most compact macro base stations in the industry with

the footprint of only 600 mm x 450 mm; thus meeting the space requirements of the operator for site acquisition and equipment room construction.

The BTS3900 has a streamlined modular structure. The part assembly and disassembly are easy and fast.

1.3.2 Cost-Effective Solutions for Capacity and Coverage A DRFU provides two TRXs. The transmit power on top of the cabinet per TRX is

up to 45 W for GSM900 or 71 W for GSM900 in Power Boost Technology (PBT) mode. With excellent performance, the BTS3900 guarantees wide coverage and high throughput, and helps minimize the number of sites.

The BTS3900 supports two-way receive diversity, four-way receive diversity, transmit diversity, and PBT. Therefore, the uplink coverage and downlink coverage are enhanced.

The TMA can be configured for the BTS3900 to improve the receive sensitivity.

1.3.3 Green Communication Design The BTS3900 adopts the innovative technology in management on power

amplification and power consumption. The occupation on resources, such as the equipment room and energy resources, is minimized.

Compared with traditional macro BTSs, the integrated BTS3900A cabinet has the power consumption reduced by 8%. Therefore, the power rate and the cost on related devices, such as power equipment, batteries, air conditioner, and heat exchanger, are reduced accordingly.

1.3.4 Reliable OM with Minimized OPEX The BTS3900 can share the BBU, RFU, and power system with other products of

the same BTS family. Thus, the cost in production, transportation, and OM is reduced.

The BTS3900 features the streamlined structure design, separated installation of the BBU and DRFU, and assembled modules. The transportation, configuration, and installation become easy. As a result, the difficulty and cost in network construction for the telecom operator are minimized.

No crane is needed because the BTS3900 cabinet weights only 57 kg. All the modules in the BTS3900 are easily accessible from the front of the cabinet,

which reduces the maintenance expense.

1.3.5 Smooth Evolution to Future-Oriented Network The BTS3900 is designed on the basis of the unified platform for the Huawei

wireless products. BTSs for different networks such as GSM, WCDMA, CDMA,



and WiMAX can share the same cabinet and BBU. The BTS3900 enables the service upgrade and network evolution for the telecom operators around the globe.

The BTS3900 supports the Abis IP/FE interface in hardware and can support Abis over IP through software upgrade if required.

The BTS3900 supports the smooth evolution to the LTE.



2 System Architecture 2.1 BTS3900 Cabinet

The BTS3900 cabinet is classified into the BTS3900 cabinet (48 V DC), BTS3900 cabinet (+24 V DC), and the BTS3900 cabinet (220 V AC) with the power input.

2.1.1 Structure of the BTS3900 Cabinet (48 V DC) The BTS3900 cabinet (48 V DC) consists of the DRFU, FAN unit, GATM, BBU, and DCDU-01. The BTS3900 cabinet (48 V DC) can be installed in stack mode. Figure 2-1 shows a fully configured cabinet in S4/4/4 configuration.



Figure 2-1 BTS3900 cabinet (48 V DC) in full configuration

FAN

Air inlet

BBU

DCDU-01

Free

1

2

4

5

DRFU

DRFU

DRFU

DRFU

DRFU

DRFU

GATM 3

(1) Double radio filter unit

(2) FAN unit (3) GSM antenna and TMA control module

(4) Baseband unit (5) Direct current distribution unit-01

2.1.2 Structure of the BTS3900 Cabinet (+24 V DC) The BTS3900 cabinet (+24 V DC) consists of the DRFU, FAN unit, BBU, DCDU-01, PSU (DC/DC), and wiring unit (+24 V) of the power subrack. The BTS3900 cabinet (48 V DC) can be stacked on a BTS3900 cabinet (48 V DC). Figure 2-2 shows a fully configured cabinet in S4/4/4 configuration.



Figure 2-2 BTS3900 cabinet (+24 V DC) in full configuration

FAN

Air inlet

BBU

DCDU-01

1

3

4

PSU 5Wiring UnitPSU PSU PSU

2

DRFU

DRFU

DRFU

DRFU

DRFU

DRFU

6

(1) Double radio filter unit (2) FAN unit (3) Baseband unit (4) Direct current distribution unit-01 (5) Wiring unit of the power subrack (+24 V) (6) Power supply unit (DC/DC)

2.1.3 Structure of the BTS3900 Cabinet (220 V AC) The BTS3900 cabinet (220 V AC) consists of the DRFU, FAN unit, BBU, DCDU-01, PMU, PSU (AC/DC), and wiring unit of the power subrack (220 V). The BTS3900 cabinet (220 V AC) can be stacked on a BTS3900 cabinet (48 V DC). Figure 2-3 shows a fully configured cabinet in S4/4/4 configuration.



Figure 2-3 BTS3900 cabinet (220 V AC) in full configuration

FAN

Air inlet

BBU

DCDU-01

1

2

3

4

PMU PSU PSU PSU

Wiring Unit

DRFU

DRFU

DRFU

DRFU

DRFU

DRFU

5

6

7

(1) Double radio filter unit (2) FAN unit (3) Baseband unit (4) Direct current distribution unit-01

(5) Power supply unit (AC/DC)

(6) Wiring unit of the power subrack (220 V)

(7) Power and environment monitoring unit

2.2 BTS3900 Modules 2.2.1 BBU3900

Figure 2-4 shows the BBU panel.



Figure 2-4 BBU panel

The BBU mainly consists of the following components: BTS Interface Unit Central Processing Unit High-Speed Interface Unit Clock Unit Monitoring Unit

In addition, the BBU is installed with the FAN and power supply units. Figure 2-5 shows the interaction between the components of the BBU.



Figure 2-5 Components of the BBU

The functions of these components are as follows:

BTS Interface Unit The BTS interface unit performs the following functions: Connects the BTS to the BSC Exchanges data between the E1 link and the DBUS Synchronizes the current-level clock with the upper-level clock

Central Processing Unit The central processing unit performs centralized management (OM and signaling processing) of the entire separated base station system. It also provides the reference clock for the system.

The central processing unit performs the following functions: Supports the UART communications protocol Controls the BTS interface unit and the communication between the BSC and the

BTS Controls the RF interface unit and communicates with the DRFU Provides and manages BTS clock signals, and supports external synchronization

clock input



High-Speed Interface Unit Each BBU3036 provides six CPRI ports. The high-speed interface unit performs the following functions: Receives the uplink baseband data from the DRFU Transmits the downlink baseband data to the DRFU

Clock Unit The clock unit performs the following functions: Provides a high precision clock source for the BTS and provides the system clock

based on this clock source Checks the phase-locked status, provides phase lock for the software, adjusts

DA, and generates frame numbers

Monitoring Unit The monitoring unit collects various types of Boolean alarm information, and reports the alarm information to the central processing unit.

2.2.2 DRFU The DRFU performs modulation and demodulation between baseband signals and RF signals, processes data, and combines and divides signals.

Figure 2-6 shows the DRFU panel.

Figure 2-6 DRFU panel



The DRFU consists of the following components: High-Speed Interface Unit Signal Processing Unit Power Amplifier Dual-Duplexer

Figure 2-7 shows the components of the DRFU.

Figure 2-7 Components of the DRFU

The functions of each component are as follows.

High-Speed Interface Unit The high-speed interface unit performs the following functions: Transmits the signals received from the BBU to the signal processing unit Transmits the signals received from the signal processing unit to the BBU

Signal Processing Unit The signal processing unit consists of two uplink RX channels and two downlink TX channels. Each channel supports two carriers.

The functions of the uplink RX channels are as follows: Down-converting the RF signals to IF signals Amplifying the IF signals and performs IQ demodulation Performing analog-to-digital conversion Sampling digital signals Performing matched filtering Supporting the digital automatic gain control (DAGC)



Encapsulating data

The functions of the downlink TX channels are as follows: Decapsulating the clock signals, control signals, and data signals from the BBU

and sending them to associated units Shaping and filtering downlink signals Performing digital-to-analog conversion through the DAC and performing IQ

modulation Up-converting the IF signals to the transmit band

Power Amplifier The power amplifier amplifies the low-power RF signals from the signal processing unit.

Dual-Duplexer The dual-duplexer performs the following functions: RX signals and TX signals can share the same antenna channel Filters RX signals and TX signals

2.2.3 GATM The GSM antenna and TMA control module (GATM) is optional. Figure 2-8 shows the GATM panel.

Figure 2-8 GATM panel

The GATM performs the following functions: Controls the RET antenna



Feeds power to the TMA Reports the RET control alarm signals Monitors the current from the feeder

2.2.4 DCDU-01 The direct current distribution unit (DCDU-01) provides 10 48 V DC outputs. Figure 2-9 shows the DCDU-01 panel.

Figure 2-9 DCDU-01 panel

The DCDU-01 performs the following functions: Leads the -48 V DC into the cabinet Distributes the 10 48 V DC outputs to boards and modules in the cabinet Provides surge protection of 10 kA in differential mode and 15 kA in common

mode and provides dry contact alarms related to surge protection failures

2.2.5 Power Subrack (DC/DC) The power subrack (DC/DC) consists of the wiring unit (+24 V) and the PSU (DC/DC). Figure 2-10 shows the panel of the power subrack (DC/DC).



Figure 2-10 Panel of the power subrack (DC/DC)

The power subrack (DC/DC) performs the following functions: Leads the +24 V DC to the cabinet Converts the +24 V DC into the -48 V DC Supplies the 48 V DC to the DCDU-01 through the LOAD and RTN ports

2.2.6 Power Subrack (AC/DC) The power subrack (AC/DC) is configured in only the BTS3900 cabinet (220 V AC). It consists of the wiring unit (220 V), PSU (AC/DC), and PMU. Figure 2-11 shows the panel of the power subrack (AC/DC).



Figure 2-11 Panel of the power subrack (AC/DC)

The power subrack (AC/DC) performs the following functions: Leads the 220 V AC into the cabinet Converts the 220 V AC into the 48 V DC Supplies the 48 V DC to the DCDU-01 Monitors the environment, detects module faults, and reports alarms Communicates with the central processing unit through the RS232/RS422 serial

port Manages the power system and the battery charging and discharging

2.2.7 FAN Unit The FAN unit regulates the temperature at the air inlet of the cabinet and in the fans. It can adjust the rotation speed of the fans to implement ventilation and dissipation for the cabinet.

2.3 Configuration of the BTS3900 The BTS3900 cabinet in full configuration provides 12 TRXs. A single cabinet supports the S4/4/4 and S2/2/2 configurations. Through stack installation, the BTS3900 cabinet can support the S1/1/1+S3/3/3 or S4/4/4+S4/4/4 configuration, and support the application in dual-band network. Table 2-1 describes the recommended configuration of the BTS3900.



Table 2-1 Recommended configuration of the BTS3900

Recommended Configuration

Hardware Configuration Description

S1/1/1

S2/2/2

Cabinet: 1 PCS BBU3900: 1 PCS DRFU: 3 PCS FAN unit: 1 PCS DCDU-01: 1 PCS GATM: optional

S4/4/4

S2/2/2+S2/2/2

Cabinet: 1 PCS BBU3900: 1 PCS DRFU: 6 PCS FAN unit: 1 PCS DCDU-01: 1 PCS GATM: optional

The power subrack (DC/DC) is installed if the +24 V DC is used; the power subrack (AC/DC) is installed if the 220 V AC is used.

Star topology is adopted between DRFUs and the BBU.

A maximum of one GATM can be configured.

S6/6/6 Cabinet: 2 PCS BBU3900: 1 PCS DRFU: 9 PCS FAN unit: 1 PCS DCDU-01: 2 PCS GATM: optional

S1/1/1+S3/3/3 Cabinet: 2 PCS BBU3900: 1 PCS DRFU: 8 PCS FAN unit: 1 PCS DCDU-01: 2 PCS GATM: optional


Ring topology is adopted between DRFUs and the BBU.

A maximum of two GATMs can be configured.

S4/4/4+S4/4/4 Cabinet: 2 PCS BBU3900: 1 PCS DRFU: 12 PCS FAN unit: 1 PCS DCDU-01: 2 PCS GATM: optional


Star and chain topologies are adopted between DRFUs and the BBU.

A maximum of two GATMs can be configured.



3 Ports 3.1 Power Ports

Table 3-1 lists the power ports on the BTS3900.

Table 3-1 Power ports of the BTS3900

Port Cabinet Type Description

Wiring terminals BTS3900 cabinet (48V DC) 48V DC input

Wiring terminals BTS3900 cabinet (+24V DC)

+24V DC input

L and N terminals BTS3900 cabinet (110V AC /220V AC)

110V AC /220V AC input

3.2 Transmission Ports Table 3-2 lists the transmission ports of the BTS3900.

Table 3-2 Transmission ports of the BTS3900

Port Connector Description

INSIDE DB25 male Transfers the four E1s/T1s between the UELP and the GTMU

OUTSIDE DB26 male Provides the input and output of the four E1s/T1s between the BBU and the BSC

CPRI SFP Provides the input and output of the CPRI signals between the BBU and the DRFU

E1/T1 DB26 male Provides the input and output of the four E1s/T1s between the GTMU and the UELP or between the GTMU and the BSC




FE0 RJ45 Reserved Connects the BBU to a routing device in the equipment room through the Ethernet cable to transmit network information.

FE1 DLC Reserved Connects the BBU to a routing device in the equipment room through the optical cable to transmit network information.

3.3 Alarm Ports In the BTS3900 system, the alarms ports vary with the optional modules configured in the BBU3900. When the BBU3900 is configured with one UPEU, two RS485 buses and eight

dry contact signals are provided. When the BBU3900 is configured with two UPEUs or one UPEU plus one UEIU,

4 RS485 buses and 16 dry contact signals are provided.

Table 3-3 describes the alarm ports of the BTS3900.

Table 3-3 Alarm ports of the BTS3900


MON0 RJ45 Provides the input and output of the externally collected environment monitoring signals in the format of the RS485 frame to the GTMU

MON1 RJ45 Provides the input and output of the externally collected environment monitoring signals in the format of the RS485 frame to the GTMU

EXT-ALM0 RJ45 Transmits the externally collected environment monitoring signals in the format of the dry contact signals to the GTMU

EXT-ALM1 RJ45 Transmits the externally collected environment monitoring signals in the format of the dry contact signals to the GTMU

3.4 Other Ports Table 3-4 describes other external ports of the BTS3900.



Table 3-4 Other external ports of the BTS3900


ETH RJ45 For local maintenance and commissioning

USB USB A reserved port used in software upgrade from a USB disk

TST USB Connected to a tester for testing the output clock signals



4 Product Features 4.1 High Capacity

The BTS3900 cabinet in full configuration houses six DRFUs. The BTS3900 cabinet provides up to 12 TRXs in the maximum configuration of

S4/4/4. The BTS3900 cabinet supports up to six sectors. A single BTS3900 supports up to 72 GSM TRXs in the maximum configuration of

S24/24/24.

4.2 Wide Coverage The static sensitivity of the TCH/FS is 113 dBm (typical value at normal

temperature). The BTS3036 supports two-antenna and four-antenna receive diversity to

improve the uplink coverage. It supports transmit diversity and PBT to improve the downlink coverage. It supports omni-directional and directional coverage modes. The TMA can be configured on the BTS3900 to improve the receiver sensitivity. It supports baseband FH, RF FH, antenna hopping, and dynamic MAIO to

suppress the network interference and thus to expand the network capacity.

4.3 Multiple Frequency Bands The BTS3900 supports GSM900 and DCS1800 catering to requirements of the telecom operators in different regions.

4.4 Easy Installation The BTS3900 cabinet can be installed on the ESD floor, on the concrete floor,

against the wall, or in stack mode. Two cabinets can be installed in stack mode with the footprint of only 600 mm x

450 mm. The battery cabinets can also be stacked to reduce the area of the equipment room.



The cables connected to all the ports on the modules and boards can be routed from the front panel and maintenance can be performed in front of the cabinet.

The subracks, modules, and boards are the same in depth and height. The power distribution components (with surge protection and filtering) have a

modular structure and can be used in different cabinets. The modular design facilitates future capacity expansion and replacement.

4.5 Flexible Networking Supports coexistence with the BTS3X, BTS3012, and DBS3900. Supports various network topologies such as star, chain, tree, ring, and hybrid

topologies.

4.6 Convenient OM It supports three OM modes: Site Maintenance Terminal mode, LMT mode, and

centralized network management mode. It supports multiple maintenance interfaces such as MMI, BIN, Web UI, SNMP,

and CLI. It supports Intranet maintenance. Once granted the authority, the user can

maintain any BTS within the system through a network element. The Site Maintenance Terminal can be used to maintain the BTS through the

Ethernet port. Once granted the authority, the user can install the client software to maintain the

network elements within the entire network in a remote and centralized way. After the equipment is installed, the BTS3900 can establish a default OM path

with the upper-level equipment if the data is not configured. Thus, the user can remotely load programs and data to the BTS.

The boards and modules support the plug-and-play function.

4.7 Various Transmission Modes Supports the E1/T1 transmission and reserves the FE port Supports microwave, satellite, and optical transmission Allows 3 U space for the built-in transmission equipment Supports the IP transmission in hardware and TDM transmission

4.8 Enhanced Antenna System Supports the RET antenna to optimize the performance of network coverage, to

suppress network interference, and to expand network capacity Supports remote batch operations, batch software upgrades, and batch

adjustment on the tilt of the RET antenna



Supports the automatic scanning of the RET antenna Supports the Antenna Interface Standard Group 2.0 (AISG2.0) and AISG1.1 Supports the cascaded RET antennas

4.9 Co-Antenna on the Same Band The same band antenna sharing unit (SASU) and the same band antenna sharing adapter (SASA) are adopted to provide low insertion loss and to reduce the cost of network deployment.

The SASU is an important component for the solution of co-antenna at the same band. It enables two networks on the same band to share the existing antenna. The SASU is applied to two scenarios: co-antenna between a 2G cell and a 3G cell, and co-antenna between two 3G cells. In addition, the cost and time of the 3G network construction are minimized.

The SASA is an important component for the solution of co-antenna between a 2G network and a 3G network at the same band. In the GSM network, the insertion loss of 0.8 dB is introduced in the downlink. Thus, the two TX carriers are combined on one antenna without deteriorating the network performance.

4.10 Good Environment Adaptability Table 4-1 Environment adaptability of the BTS3900

Environment Adaptability Description

Waterproofing and dustproofing The DRFU meets the IP54 standard. The PCB meets the IP20 standard.

Chemical environment adaptability 3/4C2 for the areas with general pollution, and where the industrial active substances are distributed over the entire area or the cities/suburbs with busy traffic

3/4C3 for the areas near the places of industrial production with chemical pollution.

For details, refer to the IEC 721-3-3 (class 3K8H).

Biological environment adaptability 4B2 for the areas that are conducive to the growth of mildew and where rodents such as rats can enter

Anti-seismic ETS 300 019-1-3 Special mechanical parts can be

added in the standard cabinet to meet the requirements in the GR-63-CORE Zone 4.



Environment Adaptability Description

Working temperature -20 to +50(in long-term operating environment) +50 to +55(in short-term operating environment)

Power supply 48 V DC, +24 V DC, and 10V AC /220 V AC inputs

Noise ETS 300 753 4.1E rural level (sound power: 61 dBA/25 and 67 dBA/45)

Auxiliary equipment AFB, APM, SPD40R, and Uninterruptible Power Supply (UPS), which provide comprehensive solutions regarding power distribution, surge protection, transmission cable distribution, transmission equipment installation, and power backup for the BTS3900.

4.11 Smooth Capacity Expansion and Evolution Capacity expansion

The BTS3900 cabinet in full configuration supports 6 DRFUs and 12 TRXs in the maximum configuration of S4/4/4. The BTS3900 cabinet supports the stack installation. A single BTS3900 cabinet supports up to 72 GSM TRXs in the maximum configuration of S24/24/24.

Upgrade The BTS3900 supports coexistence with the double-transceiver BTS3012/BTS3012AE and the outdoor mini BTS3006C/3002E. The BTS3900 is developed on the basis of the unified platform for Huawei Wireless products, and supports smooth evolution to the LTE.

4.12 Flexible Clock Synchronization Modes The BBU in the BTS3900 cabinet supports multiple clock synchronization modes to meet the different networking requirements. It can extract the 8 kHz clock signals through the Abis interface to provide the

reference clock for the system. It can extract clock signals from the Global Positioning System/Global Navigation

Satellite System (GPS/GLONASS). It can synchronize with the external clock input, namely, the 2 MHz Building

Integrated Timing Supply System (BITS) clock.



The BTS3900 can operate for a minimum of 90 days with the internal clock working in free-run mode.



5 OM System 5.1 OM System

The BTS3900 supports the OM system based on the Man Machine Language (MML) and the Graphic User Interface (GUI). The OM system enables a general OM mechanism independent of the hardware to meet customers' requirements in operating and maintaining the equipment, and provides powerful OM functions. Figure 5-1 shows the OM system.

Figure 5-1 Topology of the OM system

Site Maintenance Terminal

BSC

VLAN

iManager M2000

LMT

BTS

BTSSite Maintenance Terminal

OM system

M2000: centralized network management center LMT: Local Maintenance Terminal

BTS: GSM base station BSC: Base Station Controller



The BTS3900 supports three OM modes: Site Maintenance Terminal mode, Local Maintenance Terminal mode, and centralized network management mode. Site Maintenance Terminal mode: The Site Maintenance Terminal is locally

connected to the BTS through the Ethernet for maintenance. You can use the Site Maintenance Terminal System to operate and maintain the site, cell, Radio Carrier (RC), Baseband Transceiver (BT), channel, and board. In this mode, only one BTS can be maintained at a time.

Local Maintenance Terminal mode: The LMT is used to maintain the BTS through the OMLs on the Abis interface, which is an interface between the BSC and the BTS. The LMT communicates with the BSC through a LAN. You can use the LMT to operate and maintain the site, cell, RC, channel, and board. This mode is used to configure and modify the data of the BSC and BTS.

Centralized network management mode: You can use the Huawei iManager M2000 to maintain the BTS through the OM network. The M2000 can operate and maintain the site, cell, channel, and board. In this mode, multiple BTSs can be maintained at a time.

5.2 OM Functions The OM system of the BTS3900 enables a general OM mechanism independent of the hardware, including equipment management, software management, configuration management, service management, performance management, security management, and environment monitoring.

5.2.1 Equipment Management Through the OM system, you can query the status of all the components (boards/modules) and all the external devices (power supply/environment monitoring/RET). You can also perform data configuration and status management for some devices.

5.2.2 Software Management Provides various functions, such as downloading and activating the BTS software,

upgrading patches, and loading and downloading files. The associated tasks involve consistency check on the software and hardware releases, release management, and software upgrade.

Allows upgrade of the BTS software through the USB port on the BBU without a PC.

5.2.3 Configuration Management Allows consistency check on the added, deleted, or modified BTS data. Supports dynamic and static data configuration. In dynamic data configuration,

the data immediately take effect after modification; in static data configuration, the modified data take effect after the BTS is reset.

Supports automatic data backup.



5.2.4 Service Management Supports parameter setting and alarm query for the baseband boards, RET

antenna, and environment monitoring device. Supports various OM functions for the RET antenna, such as automatic scanning,

data configuration (antenna tilt and TMA gain), status query, and alarm reporting. Supports complete self-test on hardware installation. The BTS software can be

upgraded through the USB software package; thus shortening the upgrade period. The data configuration of the BTS can also be remotely modified.

5.2.5 Performance Management Monitors the performance of the internal and external telecommunications

networks and generates alarms when the performance deteriorates Monitors the operating status of the BTS, such as monitors the traffic volume on

the ports and measures the technical data of the BTS Monitors the usage of crucial components, such as the CPU and DSP in the

board

5.2.6 Security Management The OM system provides security management functions, such as connection management, user authentication, encryption, and forward resolution of the interface messages between the BTS software and the OMC.

5.2.7 Alarm Management Supports query of real-time alarms and history alarms Collects internal and external alarms, such as the environment monitoring device

inputs and Boolean inputs Processes alarm correlation to ensure precision and accuracy in locating alarms Provides functions of saving, interpreting, prompting, shielding, filtering,

confirming, clearing, post processing, and reporting of alarms Detects and reports alarms, and processes alarm correlation in the system

5.2.8 Environment Monitoring BTSs are usually unmanned and dispersedly distributed. The equipment working

in the adverse environment may incur fire or flood. To ensure the normal operation of the BTS equipment and to help you handle emergencies, the BTS provides a complete environment monitoring system.

The environment monitoring system provides customized solutions regarding door control, infrared, smoke, water damage, humidity, and temperature monitoring.



6 Reliability 6.1 System Reliability

The BTS3900 improves the system reliability by adopting the design of load sharing and redundancy configuration, and optimizing the technique of detecting/isolating the faults on the board and in the system. Redundancy configuration

The transmission, power supply, and fan units in the system support redundancy configuration, and the BBU supports load sharing. The BBU and DRFUs form a ring. When a DRFU in the ring fails, anticlockwise switchover is performed; thus greatly improving the system reliability. Crucial system data such as software releases and data configuration files, is backed up to ensure the normal system operation in case of data corruption.

Reliability The BTS3900 system can automatically detect and diagnose the faults in the software and hardware, and reports the fault alarms. In addition, the BTS3900 can monitor the environment and report environment alarms.

6.2 Hardware Reliability Overcurrent protection

The power system of the BBU and DRFU is protected against overcurrent, improper insertion, and inverse insertion.

Overtemperature protection The BBU and DRFU are protected against high temperature. When the internal temperature is high, the system automatically performs power derating or switches off the power amplifier based on the current temperature. When the temperature reverts to the normal value, the system increases the power level or switches on the power amplifier.

Monitoring mechanism The BBU can monitor the environment and report alarms.

Stable power supply Provides a wide range of input voltages and surge protection



Protects the programs and data of the system in case of power failure Protects the board against overvoltage, overcurrent, and reverse connection

of positive and negative poles Perfect surge protection

A 1 U-high surge protection box is provided for surge protection. Surge protection measures are taken for the AC/DC ports, input/output signal ports of the cabinet (E1 port and Boolean port), antenna port, and GPS port.

6.3 Software Reliability Software reliability is guaranteed through data redundancy and powerful error tolerance.

6.3.1 Data Redundancy Important files, such as software releases and configuration files, and crucial system data are backed up to ensure the normal system operation in case of data corruption. Redundancy of software releases

The system backs up the software releases, including the BOOTROM, in different partitions. When a software release is faulty, the backup release can be used.

Redundancy of data configuration files The system backs up the data configuration files in different partitions. When the running data configuration files are corrupted, the backup data configuration files can be used.

Redundancy of the operation logs The system records the user operations in a certain period and backs up the information in the operation logs. When the system incurs an unknown error, the maintenance personnel can locate the problem by tracing back to the normal status, or perform the data restoration.

6.3.2 Error Tolerance The error-tolerance ability prevents the system crash due to the software error. That is, the system has the self-healing ability. The capabilities of the software in error tolerance are as follows:

Scheduled detection on the crucial resources Usage check is performed on the software in the system to release the suspended software resources, and generate logs and alarms.

Task monitoring During the software running, the monitoring process monitors all the tasks. When an error occurs in the software or the hardware is faulty, the monitoring process reports alarms and attempts to restore the normal running of the software.

Data check The system checks data consistency on a regular or an event-triggering basis, restores data consistency selectively or preferably, and generates related logs and alarms.

Watchdog



When the software is running abnormally, the system detects the error through software watchdog and hardware watchdog, and is automatically reset.



7 Technical Specifications 7.1 RF Specifications

Table 7-1 RF specifications of the BTS3900

Item Specifications

Operating Frequency Band

RX Frequency Band TX Frequency Band

PGSM 900 MHz 890 MHz to 915 MHz 935 MHz to 960 MHz

EGSM 900 MHz 880 MHz to 915 MHz 925 MHz to 960 MHz

Frequency band

GSM 1800 MHz 1710 MHz to 1785 MHz 1805 MHz to 1880 MHz

Operating Frequency Band

Work Mode Output Power (GMSK/8PSK)

Non-combination 45 W/30 W

Combination 20 W/14 W

900 MHz

PBT 71 W/47 W

Non-combination 40 W/26 W

Combination 18 W/12 W

TX specification

1800 MHz

PBT 63 W/42 W

Channel Type Static Sensitivity RX specification TCH/FS Receive independency: 113 dBm (900M/1800M) Two-way receive diversity 116 dBm (900M/1800M) Four-way receive diversity 118.5 dBm (900M/1800M)



7.2 Mechanical Specifications Table 7-2 Mechanical specifications of the BTS3900

Item Specifications

Dimensions (W mm x D mm x H mm) Cabinet: 600 450 900 Base: 600 420 40

Weight (kg) Empty cabinet: 57 Cabinet in full configuration: 142

7.3 Power Specifications Table 7-3 Power specifications of the BTS3900

Item Specification

Power input 48 V DC (38.4V DC to 57 V DC)

+24 V DC (+19 V DC to +29 V DC) 110V AC /220 V AC

Power consumption

900 MHz Typical value: 530 W (TOC=20 W, S2/2/2 combination) Typical value: 1130 W (TOC=20 W, S4/4/4 combination) Typical value: 1130 W (TOC=45 W, S4/4/4 non-combination) Maximum value: 2060 W

1800 MHz, TOC=18 W, S2/2/2 non-combination Typical value: 530 W, Maximum value:780 W

1800 MHz, TOC=18 W, S4/4/4 combination Typical value: 1130 W, Maximum value:2010 W



Battery Battery specification: 12 V/50 Ah, 100 Ah, or 200 Ah Maximum duration in S4/4/4 configuration: 6 hours



The +24 V DC cabinet and the 220 V AC cabinet are installed with a power conversion unit respectively; therefore, no external power cabinet is needed.

The typical power consumption refers to the value measured when the traffic is 30%.

7.4 Surge Protection Specifications Table 7-4 Surge protection specifications of the BTS3900

Port Surge Protection Mode

Surge Current

Differential mode

3 kA (8/20 us) DC port

Common mode

5 kA (8/20 us)

AC port Differential mode

3 kA (8/20 us)

Common mode

5 kA(8/20us)

Differential mode

8 kA (8/20 us) Antenna port (including the GPS port)

Common mode

40 kA (8/20 us)

Differential mode

250 A (8/20 us) Indoor signal port

Common mode

250 A( 8/20 us)

Differential mode

250 A (8/20 us) Indoor dry contact input

Common mode

250 A (8/20 us)

Indoor dry contact output Voltage resistance

1500 V AC

Differential mode

3 kA (8/20 us) RET antenna

Common mode

5 kA (8/20 us)

Outdoor dry contact input Differential mode

3 kA (8/20 us)



Port Surge Protection Mode

Surge Current

Common mode

5 kA (8/20 us)

7.5 Environment Specifications Table 7-5 Environment specifications of the BTS3900

Item Specification

Operating environment

Operating temperature:-20 to +50 (in long-term operating environment)

+50 to +55 (in short-term operating environment)

Relative humidity: 5% RH to 95% RH Solar radiation: 700 W/m2 (at the temperature of 45) Altitude: 60 m to 3000 m (The BTS operates

normally.) 3000 m to 4000 m (The operating temperature of the BTS drops by 1 each time the altitude increases by 200 m.) Mechanical stress: IEC, ETS, and GR-63 Other specifications meet the requirements in ETS 300

019-1-3 Class 3.1.

Transportation environment

Temperature: 40 to +70 Relative humidity: 10% to 100% (without wind) Climatic condition:2K4, including 2K3 and package

transportation on 3rd-level roads in high altitude areas without environment protection

Mechanical stress Meeting the requirements in the ISTA and

QDKBA1109-2005 Meeting the falling requirements in GR-63 Meeting the vibration requirements in GR-63

Other specifications meet the requirements in the ETS 300 019-1-2 Class 2.3.

Storage environment Temperature: 40 to +70 Relative humidity: 10% to 100% (without wind) Other specifications meet the requirements in the ETS

300 019-1-1 Class 1.2.



Item Specification

Noise The cabinet is installed with built-in fans. The noise of a single cabinet is smaller than 6.9 bels. ETS 300 753 4.1E rural level (sound power: 61 dBA/25

and 67 dBA/45)

Short-term operation refers to the continuous operations within 96 hours and accumulated operations of not more than 15 days a year.



Appendix A Technical Standards

A.1 EMC Standards The BTS complies with the following EMC standards: CISPR 22(2003): limits and methods of measurement of radio disturbance

characteristics of information" EN55022(2006): limits and methods of measurement of radio disturbance

characteristics of information CISPR 24 (1998-09+ A1:2001 A2:2003): Information Technology Equipment

--Immunity characteristics --Limits and methods measurement IEC61000-4-2: Electromagnetic compatibility(EMC) Part 2:Testing and

measurement techniques Section 2:Electrostatic discharge immunity test Basic EMC Publication

IEC61000-4-3: Electromagnetic compatibility; Part 3: Testing and measurement techniques Section 3 radio frequency electromagnetic fields; immunity test.

IEC61000-4-4: Electromagnetic compatibility(EMC) Part 4:Testing and measurement techniques Section 4:Electrical fast transient/burst immunity test Basic EMC publication

IEC61000-4-5: Electromagnetic compatibility(EMC) Part 5:Testing and measurement techniques Section 5:Sruge immunity test

IEC61000-4-6: Electromagnetic compatibility: Part 6:Testing and measurement techniques: Section 6 conducted disturbances induced by radio-frequency fields; immunity test

IEC61000-4-29 : Electromagnetic compatibility: Part 29: Testing and measurement techniques and voltage variations on d.c. Input power port immunity test

ETSI 301 489-1 V1.5.1 (2004): Electromagnetic compatibility and Radio spectrum Matters (ERM);ElectroMagnetic Compatibility (EMC) standard for radio equipment and services; Part 1: Common technical requirements

ETSI 301 489-8 V1.2.1 (2002) Electromagnetic compatibility and Radio spectrum Matters(ERM); ElectroMagnetic Compatibility (EMC) standard for radio equipment and services; Part8:Specific conditions for GSM base stations

FCC 47CFR Part15 (2006): Federal Communication Committee - part 15 - radio frequency device

A.2 Surge Protection Standards The BTS complies with the following surge protection standards: IEC 62305-1(2006) Protection against lightning Part 1:General principles



IEC 61643-1(2002) Surge Protective devices connected to low-voltage power distribution systems

ITU-T K.11(1993) Principles of Protection Against Overvoltage and Overcurrents ITU-T K.27(1996) Bonding Configurations and Earthing Inside a

Telecommunication Building ITU-T Recommendation K.56 (2003) Protection of radio base stations against

lightning discharges ETS 300 253 (1995) Equipment Engineering; Earthing and bonding of

telecommunication equipment in telecommunication centres

A.3 Safety Standards The BTS complies with the following safety standards: 3G TR34.907 V3.0.0 Report on electrical safety requirements and regulations IEC 60950-1 Safety of information technology equipment EN 60950-1 Safety of information technology equipment IEC60215 Safety requirement for radio transmitting equipment

A.4 Environment Standards A.4.1 Operating Environment Standards

The BTS complies with the following standards related to the operating environment: EUROPEAN ETS 300 019-1-3 Class 3.1 Stationary use at weatherprotected

locations. EUROPEAN ETS 300 753: Equipment Engineering(EE) Acoustic noise emitted

by telecommunications equipment 1997 EUROPEAN ETS 300 019-1-3-Amd

A.4.2 Transportation Standards The BTS complies with the EUROPEAN ETS 300 019-1-2 Class 2.3 "PUBLIC transportation".

A.4.3 Storage Standard The BTS complies with the EUROPEAN ETS 300 019-1-1 Class 1.2 "not temperature-controlled storage".

A.5 Physical Protection Standard The BTS complies with K.11 and K.20 recommended by the ITU-T.



Appendix B Glossary

A

Abis interface An interface between the BSC and the BTS.

Antenna A device that performs conversion between the electricity energy and the magnetic energy. It is used to radiate and collect radio waves. In transmission, it converts the high-frequency current to the electromagnetic wave; in reception, it converts the electromagnetic wave to the high-frequency current.

B

Baseband A form of modulation in which the information is applied directly onto the physical transmission medium.

BSS Base station system. A system comprises BSCs and the BTSs under the BSCs. The BSS is controlled by the Mobile Switching Center (MSC) and communicates with the MS in the radio coverage area.

BTS Base transceiver station. The mobile communications system consists of the MS, BSS, and the NSS. The BSS consists of the BTS and the base station controller (BSC).

C

Carrier A sine wave, whose bandwidth is much higher than the bandwidth of a signal and, which can be identified by amplitude, frequency, and phase.

D

Double-transceiver A mode in which a board provides two TRXs.

E

EDGE Enhanced Data rates for GSM Evolution. A mobile telephony technology for enhanced data based on the GSM/GPRS network. It is also called the 2.75 generation technology. As a high-speed mobile data standard that remarkably improves the efficiency of the GPRS channel encoding, EDGE allows the data rate up to 384 kbit/s; thus fully meeting the broadband requirements of radio multi-media applications in the future.



F

Four-way receive diversity

A technology in which signals are received in four routes, which can gain more uplink diversity gain than the main diversity.

Transmit diversity A method to realize the man-made multi-path which optimizes the downlink signals.

G

GPRS General Packet Radio Service. A new mobile data service available to almost every GSM system. It is a connectivity solution based on Internet Protocols that supports a wide range of end-to-end and WAN applications. GPRS is a technology between the second (2G) and third (3G) generations of mobile telephony, which combines the mobile communication and the data network and introduces the IP technology into the GSM network.

GSM The Global System for Mobile Communications is originally developed as a pan-European standard for digital mobile telephony. GSM has become the world's most widely used mobile system. It is used on the 900 MHz, 1800 MHz, and 1900 MHz frequencies with the transmission rate as 9.6 kbit/s.

H

Handover A transfer of a users connection from one radio channel to another (can be the same or different cells).

R

Receive diversity The most common type of diversity, where a mobile device uses two physically separate antennas to combine signals from the two antennas to reduce the impact of spatial variations in signal strength and thus increase the average data rate available - sometimes dramatically.

S

SDH Synchronous Digital Hierarchy. A communication transmission standard defined by the ITU-T. It is derived from the Plesiochronous Digital Hierarchy (PDH).

T

TMA Tower Mounted Amplifier. A low noise amplifier installed close to the antenna.

TRX Transceiver. An entity that serves up to eight TCHFs in full-duplex mode. If the low-speed FH is not used, a transceiver serves one RF carrier.



U

Um interface Also called radio interface. An interface between the MS and the BSS.


Issue 01 (2008-05-06) Huawei Technologies Proprietary Page 51 of 52

Appendix C Acronyms and Abbreviations

A

AMR Adaptive MultiRate

B

BSC Base Station Controller

C

CBUS Control BUS

D

DAFM Antenna Front-end Module for DDRM BTS

EBMB BTS3002E Module Backplane

DBUS Data BUS

DDCM Double Combining Module for DDRM BTS

DDPM Dual Duplexer Module for DDRM BTS

DDRM Double transceivers Digital and Radio frequency Module

DMCM Main Control Module for DDRM BTS

DPSM Power Supply Module for DDRM BTS

DSEM DC SPD and EMI Module

E

EDGE Enhanced Data rates for GSM Evolution

EFR Enhanced full rate speech codec

EGPRS Enhanced GPRS

EMI External Machine Interface


Issue 01 (2008-05-06) Huawei Technologies Proprietary Page 52 of 52

F

FR Frame Relay

G

GMSK Gaussian Minimum Shift-frequency Keying

GPRS General Packet Radio Service

GSM Global System for Mobile communications

H

HR Half Rate

M

MMI man-machine interactive

O

OMC Operation and Maintenance Center

R

RF Radio Frequency

RH Relative Humidity

S

SDH Synchronous Digital Hierarchy

T

TCH Traffic Channel

TMA Tower Mounted Amplifier

Documents

Product Description HUAWEI BTS3900A