bts3x tm system description
TRANSCRIPT
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Chapter 1 Introduction 1-1....................................................................................
1.1 Current Status and Demands of GSM Network 1-1.....................................
1.2 Product Orientation 1-2................................................................................
Chapter 2 Product Features 2-1............................................................................
2.1 BTS3X Technological Characteristics 2-1....................................................
2.1.1 Integrated RF Component Technology 2-1..........................................
2.1.2 Mature RF Technology 2-1..................................................................
2.1.3 Advanced E-Abis Technology 2-1........................................................
2.1.4 Powerful O&M Functions 2-2...............................................................
2.2 Advantages of BTS3X Applications 2-2........................................................
2.2.1 Large Capacity and Wide Coverage 2-2..............................................
2.2.2 Cost Reduction 2-3..............................................................................2.2.3 Smooth Evolution 2-5...........................................................................
2.2.4 Multiple Transmission Modes 2-5........................................................
Chapter 3 Product Introduction 3-1......................................................................
3.1 Cabinet Configuration 3-1.............................................................................
3.1.1 BTS30 3-1............................................................................................
3.1.2 BTS312 3-2..........................................................................................
3.1.3 BTS3006A 3-3......................................................................................
3.1.4 BTS3012A 3-5......................................................................................
3.2 BTS3X System Architecture 3-6...................................................................
3.3 Board Description Table 3-9.........................................................................
Chapter 4 Functions 4-1........................................................................................
4.1 Basic Functions 4-1......................................................................................
4.1.1 Basic Software Functions 4-1..............................................................
4.1.2 Basic Hardware Functions 4-2.............................................................
4.2 Networking Functions 4-2.............................................................................
4.2.1 E1 Networking 4-2................................................................................
4.2.2 SDH Networking 4-4............................................................................
4.2.3 Satellite Transmission Networking 4-4.................................................
4.3 Radio Network Functions 4-5.......................................................................
4.3.1 Channels Supported 4-5......................................................................
4.3.2 Diversity Receiving 4-6........................................................................
4.3.3 Frequency Hopping 4-7........................................................................
4.3.4 Power Control 4-7................................................................................
4.3.5 Discontinuous Transmission 4-8..........................................................
4.3.6 AMR 4-8...............................................................................................Chapter 5 Reliability Design 5-1...........................................................................
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5.1 System Reliability Design 5-1.......................................................................
5.2 Hardware Reliability Design 5-2...................................................................
5.2.1 Board Coding Key Design 5-2..............................................................
5.2.2 Power System Reliability Design 5-2...................................................
5.2.3 Abis Communication Bypass Design 5-3.............................................
5.3 Software Reliability Design 5-3.....................................................................
Chapter 6 O&M System 6-1...................................................................................
6.1 O&M Architecture 6-1...................................................................................
6.1.1 Overview 6-1........................................................................................
6.1.2 Local Maintenance 6-1.........................................................................
6.1.3 Remote Maintenance 6-2.....................................................................
6.2 O&M Functions 6-2.......................................................................................
6.2.1 Security Management 6-2....................................................................6.2.2 Alarm Management 6-2........................................................................
6.2.3 Maintenance Management 6-3............................................................
6.2.4 Performance Measurement and Test 6-3............................................
Chapter 7 Technical Specifications 7-1...............................................................
7.1 Engineering Specifications of BTS3X Cabinet 7-1.......................................
7.2 Performance Specifications of BTS3X Cabinet 7-5......................................
7.3 External Physical Interfaces 7-6...................................................................
Appendix A Environment Requirements A-1.......................................................
A.1 Storage Requirements A-1...........................................................................
A.1.1 Climate Requirements A-1...................................................................
A.1.2 Waterproof Requirements A-1.............................................................
A.1.3 Biological Requirements A-2................................................................
A.1.4 Air Cleanness Requirements A-2.........................................................
A.1.5 Mechanical Stress Requirements A-3..................................................
A.2 Transportation Requirements A-3................................................................
A.2.1 Climate Requirements A-3...................................................................A.2.2 Waterproof Requirements A-4.............................................................
A.2.3 Biological Requirements A-4................................................................
A.2.4 Air Cleanness Requirements A-4.........................................................
A.2.5 Mechanical Stress Requirements A-5..................................................
A.3 Operating Environment Requirements A-6...................................................
A.3.1 Climate Requirements A-6...................................................................
A.3.2 Biological Requirements A-7................................................................
A.3.3 Air Cleanness Requirements A-7.........................................................
A.3.4 Mechanical Stress Requirements A-8..................................................
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Appendix B Abbreviations B-1..............................................................................
Index .................................................................................................................
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Huawei Technologies Proprietary
HUAWEI
M900/M1800 BTS3X Series Base Transceiver Station
Technical Manual – System Description
V300R002
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Huawei Technologies Proprietary
M900/M1800 BTS3X Series Base Transceiver Station
Technical Manual – System Description
Manual Version T2-030203-20050930-C-3.23
Product Version V300R002
BOM 31025703
Huawei Technologies Co., Ltd. provides customers with comprehensive technical support
and service. Please feel free to contact our local office or company headquarters.
Huawei Technologies Co., Ltd.
Address: Administration Building, Huawei Technologies Co., Ltd.,
Bantian, Longgang District, Shenzhen, P. R. China
Postal Code: 518129
Website: http://www.huawei.com
Email: [email protected]
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Copyright © 2005 Huawei Technologies Co., Ltd.
All Rights Reserved
No part of this manual may be reproduced or transmitted in any form or by any
means without prior written consent of Huawei Technologies Co., Ltd.
Trademarks
, HUAWEI, C&C08, EAST8000, HONET, , ViewPoint, INtess, ETS, DMC,
TELLIN, InfoLink, Netkey, Quidway, SYNLOCK, Radium, M900/M1800,
TELESIGHT, Quidview, Musa, Airbridge, Tellwin, Inmedia, VRP, DOPRA, iTELLIN,
HUAWEI OptiX, C&C08 iNET, NETENGINE, OptiX, iSite, U-SYS, iMUSE, OpenEye,
Lansway, SmartAX, infoX, TopEng are trademarks of Huawei Technologies Co.,
Ltd.
All other trademarks mentioned in this manual are the property of their respective
holders.
Notice
The information in this manual is subject to change without notice. Every effort has
been made in the preparation of this manual to ensure accuracy of the contents, but
all statements, information, and recommendations in this manual do not constitute
the warranty of any kind, express or implied.
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Summary of Updates
This section provides the update history of this manual and introduces the contents of
subsequent updates.
Update History
This manual is updated for a major product version to maintain consistency with system
hardware or software versions and to incorporate customer suggestions.
Manual Version Notes
T2-030203-20050930-C-3.23 Initial commercial release
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About This Manual
Release Notes
The product version that corresponds to the manual is M900/M1800 BTS3X Series
Base Transceiver Station V300R002.
Organization
The manual consists of 7 chapters and 1 appendix.
Chapter 1 Introduction. It briefly introduces the orientation of BTS3X in the network.
Chapter 2 Product Features. It introduces the main features of BTS3X.
Chapter 3 Product Introduction. It introduces the cabinet configuration and system
architecture of BTS3X.
Chapter 4 Functions. It introduces the main functions of BTS3X.
Chapter 5 Reliability Design. It introduces the measures taken in reliability design of
BTS3X from the aspects of system, hardware and software.
Chapter 6 O&M System. It introduces the operation and maintenance function of
BTS3X.
Chapter 7 Technical Specifications. It lists the main performance indices and
engineering parameters of BTS3X.
Appendix A Environment Requirements. It introduces the environment
requirements of BTS3X.
Intended Audience
The manual is intended for the following readers:
Marketing staff
Operation & maintenance personnel
Conventions
The manual uses the following conventions:
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I. General conventions
Convention Description
Arial Normal paragraphs are in Arial.
Bold Headings, Command, Command Description are in boldface.
II. Symbols
Eye-catching symbols are also used in the manual to highlight the points worthy of
special attention during the operation. They are defined as follows:
Caution, Warning, Danger: Means reader be extremely careful during the
operation.
Note, Comment, Tip, Knowhow, Thought: Means a complementary description.
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Technical Manual − System DescriptionM900/M1800 BTS3X Series Base Transceiver Station Table of Contents
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Table of Contents
Chapter 1 Introduction.................................................................................................................. 1-1 1.1 Current Status and Demands of GSM Network................................................................. 1-1 1.2 Product Orientation............................................................................................................ 1-2
Chapter 2 Product Features ......................................................................................................... 2-1 2.1 BTS3X Technological Characteristics ............................................................................... 2-1
2.1.1 Integrated RF Component Technology................................................................... 2-1 2.1.2 Mature RF Technology............................................................................................ 2-1 2.1.3 Advanced E-Abis Technology................................................................................. 2-1 2.1.4 Powerful O&M Functions ........................................................................................ 2-2
2.2 Advantages of BTS3X Applications................................................................................... 2-2 2.2.1 Large Capacity and Wide Coverage ....................................................................... 2-2 2.2.2 Cost Reduction........................................................................................................ 2-3 2.2.3 Smooth Evolution.................................................................................................... 2-5 2.2.4 Multiple Transmission Modes.................................................................................. 2-5
Chapter 3 Product Introduction ................................................................................................... 3-1 3.1 Cabinet Configuration........................................................................................................ 3-1
3.1.1 BTS30 ..................................................................................................................... 3-1 3.1.2 BTS312 ................................................................................................................... 3-2 3.1.3 BTS3006A............................................................................................................... 3-3 3.1.4 BTS3012A............................................................................................................... 3-5
3.2 BTS3X System Architecture .............................................................................................. 3-6 3.3 Board Description Table .................................................................................................... 3-9
Chapter 4 Functions...................................................................................................................... 4-1 4.1 Basic Functions.................................................................................................................. 4-1
4.1.1 Basic Software Functions........................................................................................ 4-1 4.1.2 Basic Hardware Functions...................................................................................... 4-2
4.2 Networking Functions ........................................................................................................ 4-2 4.2.1 E1 Networking......................................................................................................... 4-2 4.2.2 SDH Networking...................................................................................................... 4-4 4.2.3 Satellite Transmission Networking.......................................................................... 4-4
4.3 Radio Network Functions................................................................................................... 4-5 4.3.1 Channels Supported ...............................................................................................4-5 4.3.2 Diversity Receiving.................................................................................................. 4-6 4.3.3 Frequency Hopping................................................................................................. 4-7 4.3.4 Power Control.......................................................................................................... 4-7 4.3.5 Discontinuous Transmission ................................................................................... 4-8
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4.3.6 AMR ........................................................................................................................ 4-8 Chapter 5 Reliability Design......................................................................................................... 5-1
5.1 System Reliability Design ..................................................................................................5-1 5.2 Hardware Reliability Design............................................................................................... 5-2
5.2.1 Board Coding Key Design....................................................................................... 5-2 5.2.2 Power System Reliability Design ............................................................................ 5-2 5.2.3 Abis Communication Bypass Design ...................................................................... 5-3
5.3 Software Reliability Design................................................................................................5-3 Chapter 6 O&M System................................................................................................................. 6-1
6.1 O&M Architecture............................................................................................................... 6-1 6.1.1 Overview ................................................................................................................. 6-1 6.1.2 Local Maintenance .................................................................................................. 6-1 6.1.3 Remote Maintenance .............................................................................................. 6-2
6.2 O&M Functions.................................................................................................................. 6-2 6.2.1 Security Management ............................................................................................. 6-2 6.2.2 Alarm Management................................................................................................. 6-2 6.2.3 Maintenance Management...................................................................................... 6-3 6.2.4 Performance Measurement and Test ..................................................................... 6-3
Chapter 7 Technical Specifications.............................................................................................7-1 7.1 Engineering Specifications of BTS3X Cabinet .................................................................. 7-1 7.2 Performance Specifications of BTS3X Cabinet................................................................. 7-5 7.3 External Physical Interfaces .............................................................................................. 7-6
Appendix A Environment Requirements ....................................................................................A-1 A.1 Storage Requirements ......................................................................................................A-1
A.1.1 Climate Requirements ............................................................................................A-1 A.1.2 Waterproof Requirements.......................................................................................A-1 A.1.3 Biological Requirements .........................................................................................A-2 A.1.4 Air Cleanness Requirements..................................................................................A-2 A.1.5 Mechanical Stress Requirements...........................................................................A-3
A.2 Transportation Requirements............................................................................................A-3 A.2.1 Climate Requirements ............................................................................................A-3 A.2.2 Waterproof Requirements.......................................................................................A-4 A.2.3 Biological Requirements .........................................................................................A-4 A.2.4 Air Cleanness Requirements..................................................................................A-4 A.2.5 Mechanical Stress Requirements...........................................................................A-5
A.3 Operating Environment Requirements..............................................................................A-6 A.3.1 Climate Requirements ............................................................................................A-6 A.3.2 Biological Requirements .........................................................................................A-7 A.3.3 Air Cleanness Requirements..................................................................................A-7 A.3.4 Mechanical Stress Requirements...........................................................................A-8
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Technical Manual − System DescriptionM900/M1800 BTS3X Series Base Transceiver Station Chapter 1 Introduction
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1-1
Chapter 1 Introduction
1.1 Current Status and Demands of GSM Network
Since the middle 1980s, public mobile communications have witnessed two
generations of development with the further development of cellular networking
technologies and the emergence of high-capacity mobile telecommunications system.
The first generation is an analog mobile telecommunications system, which only
provides speech services using FDMA technologies.
The second generation is a digital mobile telecommunications system, which
appeared in 1990s with relevant standards including GSM, IS-95, etc. This
system is mainly used for speech services and provides low speed circuit
switched data services at the same time.
At present, GSM communications network is being applied around the world. More
and more people have recognized its big potential of development.
The market demands for the GSM network cover the following aspects:
The base transceiver station (BTS) of larger capacity is required because of the
dramatic increase in the number of mobile subscribers and the heavier traffic.
Higher multiplexing ratio over the Abis interface is required due to expensive
transmission resources.
It is required to reduce the equipment room size for cost saving.
Complicated transmission mode requires powerful BTS transmission adaptability
and multiple built-in transmission equipment.
The continuous expansion of GSM system requires that BTS be expanded
flexibly and the existing investment be protected against waste during system
expansion.
Service demands of mobile subscribers keep increasing, which requires the BTS
to support more services.
Since the power supply system is unstable, power supply of BTS is required to
adapt to a wider range of voltage fluctuation and to have certain protection
mechanism which ensures fast BTS recovery after it is powered on again.
BTS is required to provide better voice quality and faster switchover.
A series of macro cell BTSs are developed by Huawei to meet the above demands.
The series of BTSs provide a network solution to convenience in maintenance,
operation and management in densely populated areas and cities with large capacity
requirement.
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1.2 Product Orientation
BTS3X is the series of proprietary macro cell BTS developed by Huawei. The BTS
series include:
Indoor BTS30
Indoor BTS312
Outdoor BTS3006A
Outdoor BTS3012A
The above types of BTS can meet the requirements in multiple conditions. Table 1-1
gives a brief introduction to the BTS3X series.
Table 1-1 BTS3X macro cell series
BTS3X productmodel
Maximum numberof TRXs of a single
cabinetApplication
BTS30 (indoor BTS) 6 TRXsDensely populated areas andcities
BTS312 (indoor BTS) 12 TRXs Areas with high density and largetraffic
BTS3006A (outdoorBTS)
6 TRXsSuburb or small town withmedium traffic
BTS3012A (outdoorBTS) 12 TRXs
Area in the urban where it is
difficult to select an equipmentroom
BTS30 is a highly integrated indoor macro cell BTS with low power consumption,
featuring small size, high reliability and flexible networking. It can be applied to most
of the densely populated areas and cities.
BTS312 is highly integrated indoor macro cell BTS with large capacity and low power
consumption, which saves more room to facilitate expansion. It is mainly applied to
support cells with high density and large traffic.
BTS3006A and BTS3012A are outdoor macro cell BTSs with 6 TRXs and 12 TRXs
respectively that can adapt to complex climates and electromagnetic environment.
They feature low cost, fast site construction, high environment adaptability, serving as
a major supplement to indoor BTS. They provide a complete solution to the
construction of seamless mobile communication networks.
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Chapter 2 Product Features
2.1 BTS3X Technological Characteristics
The BTS3X series are designed as a typical all-in-one BTS by taking full
consideration of the requirements in capacity, configuration, installation, power supply,
transmission, and services. This section introduces its characteristics below.
2.1.1 Integrated RF Component Technology
Expansion based on the inheritance of the investment: BTS expansion can make
the utmost us of all the antenna and feeder parts.
Modular structure with good performance: RF combiner, divider and low noise
amplifier are integrated in the combining and distribution unit (CDU). All parts for
TRX processing, which include baseband processing, RF processing, power
amplification and power supply, are integrated in one transceiver unit (TRX). The
modular structure can reduce internal cable connections, improve system
reliability and facilitate installation and maintenance.
Intelligent CDU: The CDU features fine monitor and control functions, excellent
O&M, level 2 standing wave ratio alarm, low noise amplifier alarm, tower top
amplifier (TTA) alarm, TTA power supply. It also supports auto protection against
emergency, that is, it can close transmit power when the Tx channel of the
antenna and feeder is abnormal, and can power off to bypass the low noise
amplifier (LNA) when TTA is abnormal so as to ensure normal system operation.
Receive gain can be adjusted via remote control to ensure the sensitivity of the
receive system.
2.1.2 Mature RF Technology
RF hopping and baseband frequency hopping are provided to improve system
anti-interference capability. It has good performance in practical applications.
The advanced digital RF technology is adopted to raise batch consistency,
manufacture scalability and stability of the RF system.
2.1.3 Advanced E-Abis Technology
The enhanced Abis (E-Abis) supports various transmission modes and complex
topologies. The transmission mode can be SDH, E1, microwave, or satellite.
The E-Abis includes the following techniques:
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Advanced clock phase locking (APL): solves the problem of clock jittery by using
high-precision (up to 0.1 Hz) clock and characteristic software phase lock
technique. Problems such as SDH clock phase jittery and signal out of lock
during transmission via satellite are solved. The system can tolerate a tolerance at the bit error rate of 1E-4, that is, 2 levels
higher than the common 1E-6 bit error rate. A better and smooth voice quality
can be obtained even in transmission through microwave and satellite.
The system can tolerate an intermittent link failure of less than 2 seconds, which
makes the BTS3X more suitable for applications in unstable conditions such as
SDH transmission switching, microwave, satellite transmission, etc.
Protection against long transmission delay on the Abis to support satellites
networking.
2.1.4 Powerful O&M Functions
BTS3X can perform the following O&M functions: software downloading, BTS object
attribute configuration management, equipment management and running status
monitoring.
Local maintenance: provides man machine interface (MMI), and implement
maintenance, monitoring and management to all objects of the BTS through the
local maintenance system.
Remote maintenance: O&M network is made in the GSM system. The authorized
user can use any workstation in the network via the remote maintenance consoleto perform remote O&M to BTS NEs in the system.
System state monitoring provides system running indices indication, resource
state indication.
Security management provides MS login authentication, command authority
restriction, unsecured operation indication and user group management.
Test: auto-test of functions, loop-back test.
Upgrade: automatically checks the system for upgrade. System upgrading can
be performed via remote loading. The system can be restored to its previous
version if system upgrading fails.
2.2 Advantages of BTS3X Applications
2.2.1 Large Capacity and Wide Coverage
Large capacity of a single cabinet: BTS30 and BTS3006A can support up to 6
TRXs in the full configuration mode, while both BTS312 and BTS3012A can
support up to 12 TRXs in the full configuration mode.
When a TRX is configured, the nominal value of transmit power at the antenna
connector is 40 W. When the power boost unit (PBU) is equipped, the nominal
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value of transmit power can reach 80 W; When the enhanced duplexer unit (EDU)
is adopted, the RF signal combining consumption can be reduced and the BTS
coverage can be expanded.
The dual timeslot expansion function is supported. Theoretically, a maximum
coverage of 120 km can be supported.
2.2.2 Cost Reduction
It supports multiplexing of 15:1, hence greatly reducing transmission cost.
Transmission equipment such as SDH can be integrated with the cabinet,
providing a solution for future upgrade and wideband radio access and reducing
transmission equipment investment.
Centralized power supply provides power to various modules in a distributed way.
BTS30 and BTS312 can provide DC +24 V, DC -48 V and AC 220 V to satisfydifferent power supply requirements.
BTS3006A and BTS3012A enjoy good performance in outdoor adaptability and
reduced investment in accessories.
1) Multiple cabinet types for BTS3006A and BTS3012A are provided to cater to the
environment features of different areas. BTS3006A includes two types: the
cabinet with an air conditioner (220V AC) and the cabinet with a heat-exchanger
(110V AC with double live line). The BTS3012A includes four types: the cabinet
with an air conditioner (220V AC), the cabinet with an air conditioner (110V AC
with double live line), and the cabinet with a heat-exchanger (220V AC) and the
cabinet with a heat-exchanger (110V AC with double live line).
2) The BTS3006A and BTS3012A enjoy a wide working temperature range. The
working temperature range of the cabinet with an air conditioner is -40oC to
+55oC (environment temperature), and that of the cabinet with a heat exchanger
is -40oC to +50
oC (environment temperature).
3) The cabinet supports three-phase and single-phase power supply with wide
voltage range for the 220 V power supply system: 150V AC to 276 V AC, and the
tolerant voltage is 300V AC.
4) The cabinet can adopt the double live line input method for the 110V power
supply system (that is, adopt the two live lines with 120 degrees or 180 degreesphase difference, as shown in Figure 2-1).
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Figure 2-1 110V power supply
5) Designs for waterproof, dustproof, moisture proof, acid proof, mildew proof, and
ultraviolet radiation protection meet the IP55 protection standards.
6) Two types of storage battery box can be selected: built-in storage battery box
and extended storage battery cabinet. The built-in storage battery box is
equipped inside the cabinet. For BTS3012A and BTS3006A, it can be configured
with two 12 V/100 AH and two 12 V/50 AH batteries respectively. They can
supply power to the cabinet for at least 30 and 20 minutes respectively. The
extended storage battery cabinet can be optionally configured to extend the
power supply time.
7) It supports the combined cabinet with three cabinets. BTS3012A supports up to
36 TRXs per site, BTS 3006A supports up to 18 TRXs per site. The combined
cabinet can meet large-capacity service demands.
8) Room of standard 19 inches high, 5U wide (5 × 44.45 mm), 300 mm deep is
reserved together with cable outlet for microwave and SDH. Small built-in
microwave and SDH transmission equipment can be equipped for diverse
demands of the customers.
Caution:
The temperature range during which the built-in transmission device of the cabinet
can work normally is 0°C – 55°C.
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2.2.3 Smooth Evolution
The BTS3X series can support:
850M, 900M, 1800M, and 1900M services.
Mixed dual band plug-in of 900 MHz and 1800 MHz modules of 6 cells
General packet radio service (GPRS), which helps to realize smooth evolution
from 2G to 2.5G systems.
2.2.4 Multiple Transmission Modes
Multiple built-in transmission modes: 75 ohm/E1, 120 ohm/E1, and SDH. The
BTS has powerful transmission adaptability.
Room for transmission equipment such as the built-in microwave and the SDH is
reserved in the BTS3012A and BTS3006A. Transmission power is also supplied.
Users can select transmission modes according to their demands.
Note:
The built-in transmission equipment in the cabinet must meet the requirement of
working long time in the environment temperature of 0 oC–55
oC. You can lead out the
24 V DC/220 V DC power supply from the cabinet for the transmission equipment. If it
is the 48 V power supply, the transmission power supply module is needed.
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Chapter 3 Product Introduction
3.1 Cabinet Configuration
This section introduces the typical single cabinet configuration of BTS30, BTS312,
BTS3006A and BTS3012A. BTS3X adopts a modular RF structure. Clients can
configure the boards according to the actual site condition by following certain
configuration rule.
3.1.1 BTS30
BTS30 dimensions: 1,600 mm (H) × 600 mm (W) × 450 mm (D)
Figure 3-1 shows a typical single BTS30 cabinet under full configuration. In the figure,
BTS30 is configured with 3 CDUs, 6 TRXs, 4 power supply units (PSUs), 1 power
monitor unit (PMU), 2 timing/transmission and management units (TMUs), 1
transmission extension power supply unit (TES) and 1 transmission extension unit
(TEU).
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TX
RX
CDU
TX
RX
CDU
TX
RX
CDU
TX
RX
TRX
TX
RX
TRX
TX
RX
TRX
TX
RX
TR X
TX
RX
TRX
TX
RX
TR X
P
S
U
P
S
U
P
S
U
P
S
U U
P
M
T
M
U
T
M
U
T
U
E
T
E
S
Switch Box
Air Inlet
Fan Box
Figure 3-1 Typical configuration of BTS30
3.1.2 BTS312
BTS312 Dimensions: 1,880 mm (H) × 650 mm (W) × 500 mm (D)
Figure 3-2 shows a typical single BTS3012 cabinet under full configuration. In the
figure, BTS312 is configured with 6 CDUs, 12 TRXs, 6 PSUs, 1 PMU, 2 TMUs, 1 TES
and 2 TEUs.
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TX
RX
CDU
TX
RX
CDU
TX
RX
TRX
TX
RX
TRX
TX
RX
TR X
TX
RX
TRX
TX
RX
CDU
TX
RX
CDU
TX
RX
TRX
TX
RX
TRX
TX
RX
TR X
TX
RX
TRX
TX
RX
CDU
TX
RX
CDU
TX
RX
TRX
TX
RX
TRX
TX
RX
TR X
TX
RX
TRX
P
S
U
P
S
U
P
S
U
P
S
U
P
S
U
P
S
U
P
M
U
T
M
U
T
M
U
T
U
E
T
U
E
T
E
S
Switch Box
Fan Box
Air Inlet
Fan BoxFan Box
Air Trough
Figure 3-2 Typical configuration of BTS312
3.1.3 BTS3006A
BTS3006A dimensions: 1,700 mm (H) × 900 mm (W) ×720 mm (D)
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BTS3006A can be configured with 3 CDUs, 6 TRXs, 5 PSUs, 1 PMU, 1 TCU, 1 TMU
and 1 Abis bypass board (ABB) and other auxiliary equipment, including transmission
equipment, power lightning protection filter box in the left of the cabinet, AC/DC power
distribution box, transmission supply unit (TSU) and the built-in battery box.
Switch box
Lightning
filter box
Batterycabin
AC power
distribution
subrack
Battery cableinlet
Lightning
protection
subrack
TCU
TMU
ABB
PSU
PSU
PSU
PSU
PSU
PMU
EMU
IPU
TS
U
Transmission
device
subrack
CD
U
CD
U
C
DU
TRX
TRX
TRX
TRX
TRX
TRX
Air inlet
FMU
DC power distribution
subrack
Figure 3-3 Typical configuration of BTS3006A
In addition, BTS3006A can be configured with large capacity extended battery cabinet.
It can hold 12 batteries with nominal voltage of 2 V. The appearance of the cabinet is
shown in Figure 3-4.
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Figure 3-4 Appearance of storage battery cabinet without front door
3.1.4 BTS3012A
BTS3012A dimensions: 1,700 mm (H) × 1,200 mm (W) × 1000 mm (D)
Figure 3-5 shows a typical single BTS3012A cabinet under full configuration. As
shown in the figure, the cabinet is configured with 6 CDUs, 12 TRXs, 6 PSUs, 1 PMU,
1 TMU, 1 TCU and 1 Abis bypass board (ABB). The auxiliary equipment cabinet can
be configured with transmission device, power lightning protection filter box at cabinet
back, AC and DC power distribution boxes, voltage regulator, EMUA, transmission
supply unit (TSU), and built-in storage battery box.
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FAN
FAN
EMU A
CDU
CDU
CDU
CDU
C
DU
C
DU
TRX
TRX
TRX
TRX
TRX
TRX
TRX
TRX
T
RX
T
RX
T
RX
T
RX
PSU
PSU
TSU
E1 lightning
protection
subrack
AC power
distribution
subrack
DC power
distribution
subrack
Battery Cabin
TCU
T
M
U
A
B
B
Transmission
device subrack
FAN FAN
Cable Inlet
Cable
Inlet
Switch Box
PMU
PSU
PSU
PSU
PSU
PSU
Figure 3-5 Typical configuration of BTS3012A
The BTS3012A can also be configured with a large-capacity extended storage battery
cabinet, which can accommodate 12 (or 24) storage batteries with the nominal
voltage of 2 V.
3.2 BTS3X System Architecture
BTS3X supports the following functions:
Connecting with the base station controller (BSC) via the Abis interface to
coordinate with BSC in radio resource management, radio parameter
management and interface management
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Communicating with the mobile station (MS) via the Um interface to realize radio
transmission and related control between BTS and MS
Figure 3-6 shows the system architecture of BTS30/312 equipped with TEU and TES.
TRX
TRX
TRX
CDU
CDU
ECDU
TTA TTA
TTA TTA
TTA TTA
PMUPSU
FMU
TDU
TMU
TEU TES
Abis
E1
Fiber(Optinal)
Common Unit Signaling Processor Unit Antenna Feeder Unit
External Alarm
Um
CBUS/TBUS/DBUS
BSC
ABB&ABA
PBU
Figure 3-6 BTS30/312 system architecture
The following further explains the above figure:
1) The boards indicated by dotted blocks are optional:
There are 2 TMU slots on BTS30/BTS312 working in active/standby mode. The
standby TMU can be configured as required.
TEU and TES, if configured, provide built-in optical transmission. ABB and Abis
bypass assistant board (ABA), if configured, provide the Abis bypass function.
Because ABB and ABA must be installed in the slots hosting TEU and TES, you
have to select one of the two functions.
Generally, the triplex TTA is adopted.
2) To meet the requirements in multiple frequency bands and coverage, there are
many types of combining and distribution units, including CDU, ECDU, enhanced
duplexer unit (EDU), railway GSM enhanced combining and distribution unit
(RCDU), railway enhanced duplexer unit (REDU), multi distribution unit (MDU),
simple combining unit (SCU), and enhanced simple combining unit (ESCU).
3) The PBU only supports the power amplification of 40 W TRX at GSM900 MHz
and GSM1800 MHz.
4) TEU is the generic term for boards realizing multiple optical transmission modes.
It includes boards access SDH unit (ASU) and passive transmission board (PAT)
that provide 155 M SDH and passive optical transmission respectively.
5) The system architecture of BTS3012A and BTS3006A is similar to that of
BTS30/BTS312. They only differ in the architecture of common subsystem.
Figure 3-7 shows the logical architecture of the common subsystem when an
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ABB is installed. For the BTS3012A and BTS3006A, the ABB is optional, while
no TEU, TES, ABA or standby TMU can be configured in the cabinet.
PMUPSU
FMU
Abis
E1
Common subsystem
ABB
TMU
Figure 3-7 Architecture of common subsystem in BTS3012A/BTS3006A
Note:The Abis transmission bypass function can be performed in BTS chain networking
environment:
When the site (excluding the last level) adopting ABB is powered down, ABB is
responsible to bypass the site on the Abis transmission line so as to keep the
working of other sites on the Abis transmission line normal.
When ABB is located in the last level site of the chain networking environment, if
the site is powered down, ABB is responsible to loop back the Abis transmission
line.
The BTS3X series of BTS are composed of the following subsystems:
I. Common Subsystem
The common subsystem is composed of boards such as TMU, PSU and PMU. It
performs the following functions:
Managing and controlling other subsystems and modules
Collecting alarm information
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Providing multiple basic clocks for other subsystems and modules
Communicating with the O&M system
Processing signaling managing resources
Supplying power to the integrated equipment and providing power monitoring
and management
Providing multiple built-in transmission interfaces
II. Signal Processing Subsystem
The signal processing subsystem is composed of TRXs, PBUs and CDUs. It performs
the following functions:
Channel encoding and decoding, interleaving and de-interleaving
Speech encryption and decryption
Rate adaptation Mapping between logical channel and radio channel
Inter-cell handover and intra-cell handover
Signal up/down convert, sampling, filtering and amplification
III. Antenna and Feeder Subsystem
The antenna and feeder subsystem is composed of antennas, feeders, jumpers,
lightning arrester and TTA (optional). It performs the following functions:
Transmitting RF signals
Receiving signals from MS Amplifying uplink signals received
Preventing damage to the equipment by lightning current
3.3 Board Description Table
Refer to Table 3-1 for the board description table of BTS3X.
Table 3-1 Board description table of BTS3X
Board abbreviation Full name
ABA Abis Bypass Assistant Board
ABB Abis Bypass Board
ASU Access SDH Unit
CDU Combining and Distribution Unit
ECDU Enhanced Combining and Distribution Unit
EDU Enhanced Duplexer Unit
EMU Environment Monitor Module
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Board abbreviation Full name
EMUA Environment Monitoring Unit Analyzer
ESCU Enhanced Simple Combining Unit
MDU Multi Combining and Distribution Unit
PAT Passive Transmission Board
PBU Power Boost Unit
PMU Power Monitor Unit
PSU Power Supply Unit
RCDU Railway GSM Enhanced Combining and Distribution Unit
REDU RGSM Enhanced Duplexer Unit
SCU Simple Combining Unit
TCU Temperature Control Unit
TDU Time Distribution Unit
TEU Transmission Extension Unit
TES Transmission Extension Power Supply Unit
TMU Timing/Transmission and Management Unit
TRX Transceiver Unit
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Chapter 4 Functions
4.1 Basic Functions
This section describes the basic functions of the BTS3X series.
4.1.1 Basic Software Functions
The basic software functions of the BTS3X series include:
850M, 900M, 1800M, 1900M services
EGSM, RGSM extended frequency service
All data services prescribed in Phase II+
GPRS basic services
EDGE basic services, MSC1– MSC9 coding and encoding schemes
Support of Phase I/Phase II /Phase II+ compatible LAPDm protocols
CS-1/CS-2/CS-3/CS-4 radio channel coding schemes
Phase I/Phase II/ Phase II+ compatible system information broadcasting and
resource indication
Full rate (FR), enhanced full rate (EFR), half rate (HR) data services, adaptivemultirate (AMR) services, and all the other types of FR data services
Broadcasting short messages and point-to-point short messages
Paging queue
A5/1, A5/2 encryption/decryption
Basic data dynamic configuration
Dynamic resource management
Measurement report preprocessing
10:1, 12:1 and 15:1 signaling multiplexing on the Abis interface
BCCH frequency mutual-aid
Immediate assignment combination, paging combination and paging resend
functions, boosting the radio channel utilization
Voice activity detection (VAD) based discontinuous transmission (DTX) and
discontinuous reception (DRX)
Omnidirectional cell and directional cell
Chain, tree, star and ring networking modes supported
Support of locked, fast pull-in, holdover and free run clock modes
Synchronous, asynchronous and quasi-synchronous handover
Um interface tracing and internal interface tracing
Remote and local loading of software
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Dynamic and static power control
Support of satellite transmission and support of 16 k signaling transmission on
the Abis interface
Support of extended cell functions Uplink frequency scanning
Support of Huawei power control algorithm II
Multi-cell configuration with up to 12 cells
Timeslot-based baseband frequency hopping and RF hopping
Support of class 3 handsets with large power
Support Adaptive Multi-Rate (AMR), support AMR FR and AMR HR
4.1.2 Basic Hardware Functions
Basic hardware functions of BTS3X series include:
Eight E1 ports and twelve antenna feeders ports
Support of battery management
Support of both 900 MHz and 1800 MHz modules in one cell, in total for 6 cells
Lightning protection at trunk ports, power ports, and RF ports
E1 bypass function after the power-off of the BTS3X
BTS3X bar code report and software/hardware version report of some boards
The TMU auto-check of the central frequency of the crystal oscillator
Clock backup and switchover of master and slave clocks
Clock fast pull-in mode E1 self-loop test and RF self-loop test
4.2 Networking Functions
BTS3X has flexible networking modes. It can support multiple transmission modes:
E1, SDH, HDSL, microwave and satellite transmission.
4.2.1 E1 Networking
When networked via E1, BTS3X supports star, tree and chain networking. E1
networking is shown in Figure 4-1, Figure 4-2, and Figure 4-3, where each line
indicates a bi-directional E1 line.
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I. Star Networking
BSC
BTS
BTS
BTS
Figure 4-1 BTS3X E1 star networking
II. Tree Networking
BSC
BTS
BTS
BTS
BTS
Figure 4-2 BTS3X E1 tree networking
III. Chain Networking
BSC BTS BTS BTS
Figure 4-3 BTS3X E1 chain networking
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IV. Ring Networking
BSC BTS BTS BTS
Figure 4-4 BTS3X E1 chain networking
4.2.2 SDH Networking
When networked via SDH, BTS3X supports chain and ring networking. SDH
networking is shown in Figure 4-5 and Figure 4-6, where each line indicates an E1,
and each pair of lines indicates a pair of optical fibers.
I. Chain Networking
BTS BTSBSC Optical Transceiver
Figure 4-5 BTS3X SDH chain networking
II. Ring Networking
BSC Optical
Transceiver BTS BTS BTS
Figure 4-6 BTS3X SDH ring networking
4.2.3 Satellite Transmission Networking
In areas lacking transportation facilities, ordinary BTS cannot satisfy the requirements
due to restriction of conventional transmission technology. Therefore, GSM services
cannot be provided. Adopting the satellite transmission networking mode in these
areas will make the transmission effective and economic. Figure 4-7 shows the
satellite transmission networking.
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Figure 4-7 Satellite networking
Technological difficulties of satellite transmission networking are related to the
inherent characteristics of satellite transmission, such as long transmission delay, low
stability of transmission link, etc. To solve these problems, Huawei adopts delay,
synchronization and bit error solutions to guarantee the service quality of satellite
transmission.
4.3 Radio Network Functions
4.3.1 Channels Supported
I. Channel Types Supported
TCH/AFS: Advanced Full rate Speech Traffic Channel
TCH/AHS: Advanced Half rate Speech Traffic Channel
TCH/EFS: Enhanced Full rate Speech Traffic Channel
TCH/FS: Full rate Speech Traffic Channel
TCH/HS: Half rate traffic channel for speech
TCH/F9.6: Full rate 9.6kbit/s Traffic Channel
TCH/F4.8: Full rate 4.8kbit/s Traffic Channel
TCH/F2.4: Full rate ≤2.4kbit/s Traffic Channel
PDTCH/F: Full rate packet data traffic channel
FCCH: Frequency Correction Channel
SCH: Synchronization Channel
BCCH: Broadcast Control Channel
PCH: Paging Channel
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RACH: Random Access Channel
AGCH: Access Grant Channel
PPCH: Packet Paging channel
PRACH: Packet Random access channel PRAGCH: Packet Access grant channel
PTCCH: Packet Timing advance control channel
SDCCH/8: Stand-alone Dedicated Control Channel, eight of them mapped on a
separate basic physical channel
SACCH/C8: Slow SDCCH/8 Associated Control Channel
SACCH/TF: Slow TCH/F Associated Control Channel
FACCH/F: Full rate Fast Associated Control Channel
SDCCH/4: Stand-alone Dedicated Control Channel, four of them mapped on the
same basic physical channel as the CCCH
SACCH/C4: Slow, SDCCH/4 Associated Control Channel
CBCH: Cell Broadcast Channel
II. Channel Combinations Supported
TCH/F + FACCH/F + SACCH/TF
TCH/H(0,1) + FACCH/H(0,1) + SACCH/TH(0,1)
TCH/H(0,0) + FACCH/H(0,1) + SACCH/TH(0,1) + TCH/H(1,1)
FCCH+SCH+BCCH+CCCH
FCCH+SCH+BCCH+CCCH+SDCCH/4+SACCH/C4
BCCH+CCCH SDCCH/8+SACCH/8
SDCCH/8+SACCH/8+CBCH
FCCH+SCH+BCCH+CCCH+SDCCH/4+SACCH/C4+CBCH
PBCCH+PCCCH+PDTCH+PACCH+PTCCH
PCCCH+PDTCH+PACCH+PTCCH
PDTCH+PACCH+PTCCH
Note:
CCCH=PCH+RACH+AGCH
PCCCH=PPCH+PRACH+PAGCH
4.3.2 Diversity Receiving
A radio channel is a random time-variable channel with fading features. The diversity
receiving technology is an effective anti-fading technology. Radio signals that are
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transmitted to the receiver through radio channels are combination of various
multipath components. These signals carry the same message and features irrelevant
random fading characteristics. With the diversity receiving technology, these signals
can be combined into general receiving signals to diminish the impact caused byfading.
The diversity receiving methods include frequency diversity, time diversity,
polarization diversity and space diversity. BTS3X uses polarization diversity, space
diversity and frequency diversity to diminish signal fading.
4.3.3 Frequency Hopping
Frequency hopping is an important method to improve the performance of a BTS. It
can improve the anti-fading capability of uplink and downlink channels, and canimprove the security in communications.
BTS3X can provide baseband frequency hopping and RF hopping. RF hopping
adopts dynamic loop bandwidth technology and pingpong handover technology to
realize realtime switchover between two frequency synthesizers. When frequency
hopping is not performed, one channel of the transceiver local oscillator is reserved to
raise system reliability.
4.3.4 Power Control
When the distance between the MS and BTS3X changes, the BSC adjusts the
transmit power of BTS3X accordingly. Each level of power control adopts the
automatic power control (APC) technology to minimize the power error at each level.
When the timeslot is idle, the BSC will command BTS3X to close the transmit power
of the timeslot because there is no downlink signal. Power control can raise the
efficiency of the transmitter and the reliability of power amplifier, and minimize the
interference of the transmitter.
There are 11 BTS3X static power levels: level 0 to 10, descending with 2 dB per level.
The maximum output power of BTS is level 0. For example, in the case the maximumoutput power of BTS30 is 40 W, level 0 corresponds to 46 dBm, while level 10
corresponds to 26 dBm.
BTS dynamic power control is fine-tune based on static power control. There are 15
BTS3X dynamic power control levels: level 0 to 15, in descending sequence, where
level 0 is the same as that of static power control level. If the "current maximum
transmit power" is Pm, the range of dynamic power control is Pm to (Pm - 30) dBm.
When dynamic power control reaches the maximum but still cannot meet the
requirement, the static power control should be adjusted so as to raise the maximum
output power of dynamic power control.
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4.3.5 Discontinuous Transmission
There are two transmission modes in the GSM system:
One is the normal mode, in which noise has the same transmission quality as
voice.
The other is discontinuous transmission (DTX) mode, in which MS only sends
the encoded background noise that is called "comfortable noise".
The utilization of DTX can meet the requirement for system measurement and can
make the called feel that the call is not disconnected.
BTS3X adopts voice activation detection (VAD) technology to distinguish voice from
noise.
4.3.6 AMR
BTS3X supports Adaptive Multi Rate (AMR). AMR is a set of multiple voice Codec
algorithms. Different Codec algorithm generates different rate voice code stream. The
BTS and MS can automatically choose a proper Codec algorithm according to the
actual radio environment to adjust the rate. Thus the voice quality of the radio
communication system is improved.
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Chapter 5 Reliability Design
5.1 System Reliability Design
I. Rating-Lowering Design
The strict rating-lowering design is applied to power and easily overheated devices to
make the electrical stress and temperature stress in practical utilization lower than the
set rating. This postpones the degradation of parameters and prolongs their life span.
II. Heat Design
Through parts selection, circuit design, structure design, and heat dissipation design,
the impact of temperature change on product performance is reduced and reliable
operation of the product in a wider temperature range is ensured.
III. EMC Design
Electromagnetic compatibility (EMC) design prevents equipment from inhibited
degradation caused by electromagnetic transmission of other equipment in the same
electromagnetic environment. It also prevents other equipment, subsystems, and
systems in the same electromagnetic environment from inhibited degradation caused
by the electromagnetic transmission of the equipment.
IV. System Fault Monitoring and Handling
The system can auto-test and diagnose software and hardware fault, and report
alarms. It can record and output the fault records for print. It collects environment
conditions and report alarms when it detects problems. When TMU is faulty, the
system can test the major faults and report alarms while keeping the communication
between BTS and BSC.
V. System Fault Protection
A fault of any module will not lead to destructive fault of other modules. Major faults
can be reported in time.
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VI. System Maintainability Design
Reasonable BTS internal cabling facilitates board replacement during fault handling.
During board replacement, you can only disconnect the cables of the faulty boards.
When replacing boards, main boards can be plugged in or pulled out from the front of
the cabinet.
By indicator states, you can judge whether the equipment operation is normal.
VII. Running Environment Protection Design
The system provides the following functions for the PSU and the transmit power
equipment:
Input over- and under-voltage protection
Output over-voltage protection
Output short-circuited protection
Output overload protection
Excess temperature protection
For the DC input transmit power, it has input reverse polarity protection to guarantee
system safety.
5.2 Hardware Reliability Design
5.2.1 Board Coding Key Design
When a functional board is mistakenly inserted into the slot of the functional board of
another kind, the mistakenly inserted board cannot make normal contact with the
backplane. The coding key is adopted to protect the equipment against damage.
5.2.2 Power System Reliability Design
I. Uninterrupted Power Supply Design
For BTS using AC power supply, the outdoor BTS can work for some time by using
the storage battery equipped to keep the operation of equipment during this time
when external mains supply is powered off. The BTS sends mains supply power off
alarm signal to the BAM in the meantime, and handles the alarm according to the
actual situation.
BTS3006A/BTS3012A has built-in transmit power to provide -48 V power for
transmission equipment. To improve reliability, 1+1 backup working mode may be
adopted for the transmit power. When one of the modules is faulty, it automatically
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exits the power supply system, while another module provides output to all -48V load
and sends the module faulty alarm information to the BAM.
II. Distributed Power Supply Design
Distributed power supply for load is adopted inside the system. The key power supply
path, AC/DC part, adopts N+1 backup working mode. If one of the modules in AC/DC
part is faulty, alarm information can be sent to the BAM, and onsite hot swappable
replacement is supported.
5.2.3 Abis Communication Bypass Design
When BTS is in chain networking environment and its power fails, the Abis
transmission bypass board in the BTS can bypass the transmission line of the TMUboard internally, hence avoiding long-time service disruption of all the sites under this
BTS.
5.3 Software Reliability Design
I. Scheduled Check of Key Resources
For software resources in the system, the verifying mechanism for long-time
occupation is applied among the modules. In case of resources unavailable due to
software exception, the verifying mechanism can ensure the release of unavailable
resources and the output of various logs and alarms.
II. Fault Isolation Feature
Software design features module fault isolation. The error in some software module is
only restricted in the module and does not lead to fault in other software modules.
The software can tolerate faults and correct errors. Abnormal operation of minor
software does not cause system restart or reset.
III. Data Check
Consistency check of user input data guarantees the correctness of reference
relation among the data.
When the system detects data modification failure in some stage, it will restore
the related data to the initial state for data consistency.
IV. Process Monitoring
During software operations, output channels are provided for internal software errors
and part of hardware errors, which is defined as the process monitoring mechanism.
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This mechanism can monitor the running state of tasks, handle system abnormalities
and report to the external devices.
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Chapter 6 O&M System
6.1 O&M Architecture
6.1.1 Overview
As shown in Figure 6-1, BTS can provide two maintenance modes:
Local maintenance
Remote maintenance
Local Maintenance
Console
Remote Maintenance
Console
MMI
MMI
BTS
BTS
BSC
A b i s
A b i s
OMC
Server
Hub
Remote Maintenance
Console
Figure 6-1 BTS O&M structure
6.1.2 Local Maintenance
Local maintenance refers to the maintenance mode in which PCs are connected to
BTS through serial port cables and implement maintenance operations to the BTS, as
shown in Figure 6-1.
The local maintenance console can only be accessed after the local maintenancesoftware is loaded to PCs. The BTS local maintenance is carried out based on
different logical objects of the BTS, including site, cell, carrier, and baseband. Direct
operations can also be performed on boards. Real-time alarm messages can be
obtained at the same time.
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6.1.3 Remote Maintenance
Remote maintenance is performed through OMC. PCs are connected to BSC via
OMC network and are connected subsequently to BTS via the Abis interface, asshown in Figure 6-1.
The remote maintenance console can only be accessed via OMC Shell of the
workstation (WS). The user interface of the BTS remote maintenance console uses
topological structure, where names, categories, locations, numbers, equipment types
and running states (normal, alarm, etc.) of all NEs in the mobile network can be
browsed. You can specify an NE to be maintained and check its detailed performance
data, alarm data and configuration data. You can also implement operations and
maintenance on certain types of NEs through the topological map.
6.2 O&M Functions
The BTS3X O&M system provides powerful O&M functions to meet your
requirements in equipment performance and maintenance. These functions include:
Security management
Alarm management
Maintenance management
Performance measurement and test
6.2.1 Security Management
Various remote maintenance operations can be implemented through the O&M
system. The system provides powerful security management to execute O&M control
over the equipment in order to avoid unauthorized operations that may affect normal
performance of the equipment.
To perform operations and maintenance on the BTS, you have to log in and go
through authentication. The system provides an authorization system on multiple
levels to ensure that only authorized users can execute relevant commands for O&M.
Meanwhile, dialog boxes are prompted before any important O&M command is
executed to get confirmation for the potential problems due to the operations.
6.2.2 Alarm Management
The BTS O&M system provides highlighted alarm windows and powerful real-time
alarm management functions, such as collection, clearing, query, processing, saving,
explanation, prompting, shielding, filtering, acknowledging, and analyzing. Besides, it
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provides an on-line help information system and stage filtering system to help you
quickly locate faults. It also provides alarm recovery methods.
6.2.3 Maintenance Management
The operation & maintenance center (OMC) implements management over the whole
BSS through BSC. For the OMC, the BTS is highly visible. BTS can check and locate
internal errors so that BSC can implement maintenance to it without knowing the
internal structure of each BTS.
6.2.4 Performance Measurement and Test
The O&M system can implement performance measurement and test to the entities
so as to collect BTS running states data and perform accurate analysis on the running
states.
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Chapter 7 Technical Specifications
7.1 Engineering Specifications of BTS3X Cabinet
The cabinet engineering specifications of BTS30 are shown in Table 7-1.
Table 7-1 BTS30 cabinet engineering specifications
Parameter Specifications
Height 1600 mm
Width 600 mmCabinet dimensions
Depth 450 mm
Weight 180 kg (a single cabinet under full configuration)
Power consumption 1200 W (a single cabinet under full configuration)
Working environmenttemperature
-5C to +45C
Working environment relativehumidity
15% to 85%
Clock
Frequency: 1.3 % 107 Hz, with precision higherthan 0.05 ppm at delivery
Temperature drift: < !5 % 10-8
(0C to 70C)
Annual aging rate:< !1 % 10-7
Input power supply
220 V AC: 150 V AC to 280 V AC/47 Hz to 63 Hz
-48 V DC: –40 V DC to -60 V DC
24 V DC: 19 V DC to 29 V DC
Security performance In compliance with IEC60950 standard
Earthquake-proofperformance
In compliance with IEC Class 4M3 standard
EMCIn compliance with ETS 300-342-3 correspondingstandard
The cabinet engineering specifications of BTS312 are shown in Table 7-2.
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Table 7-2 BTS312 cabinet engineering specifications
Parameter Specifications
Height 1880 mm
Width 650 mmCabinet dimensions
Depth 500 mm
Weight 330 kg (a single cabinet under full configuration)
Power consumption 2400 W (a single cabinet under full configuration)
Working environmenttemperature
-5C to +45C
Working environmentrelative humidity 15% to 85%
Clock
Frequency: 1.3 % 107Hz, with precision higher than
0.05 ppm at delivery
Temperature drift: < !5 % 10-8
(0C to 70C)
Annual aging rate:< !1 % 10-7
Input power
220 V AC: 150 V AC to 280 V AC/47 Hz to 63 Hz.
-48 V DC -40 V DC to -60 V DC
24 V DC: 19 V DC to 29 V DC
Security In compliance with IEC60950 standard
Earthquake-proofperformance
In compliance with IEC Class 4M3 standard
EMC In compliance with ETS 300-342-3 related standard
The cabinet engineering specifications of BTS3006A are shown in Table 7-3.
Table 7-3 BTS3006A cabinet engineering specifications
Parameter Specifications
Height 1700 mm
Width 900 mmCabinet dimensions
Depth 720 mm
Weight
390 kg (a single cabinet under full configuration,including built-in batteries)
250 kg (assembly cabinet)
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Parameter Specifications
Power consumption
1900W (when the heat exchanger is not working)
2300W (when the heat exchanger is exchanging
the heat)
3500W (when the heat exchanger is heating thecabinet)
Working environmenttemperature
-40C – +50C
Storage temperature -40C – +70C
Working environmentrelative humidity
5% – 100%
Clock
Frequency: 1.3 % 107Hz, with precision at delivery
higher than 0.05 ppm
Temperature drift: <±5 % 10-8
(0C to 70C)
Annual aging rate: <±1 % 10-7
Input power
220V AC voltage range: 176 V – 275 V; (150 V –176 V or 275 V – 300 V).
Working frequency: 45 Hz – 65Hz; 220V ACsupports single phase or three-phase powersupply.
110V AC voltage range: 90 V – 135 V
Working frequency: 45 Hz– 65Hz; 110V AC onlysupports double live line power supply.
Security In compliance with IEC60950 standard
Earthquake-proofperformance
In compliance with IEC Class 4M3 standard
EMC In compliance with ETS 300-342-3 related standard
Waterproof and dustproofperformance
In compliance with IP55 standard
The cabinet engineering specifications of BTS3012A are shown in Table 7-4.
Table 7-4 BTS3012A cabinet engineering specifications
Parameter Specifications
Height 1700 mm
Width 1200 mmCabinet dimensions
Depth 1000 mm
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Parameter Specifications
Weight
650 kg (a single cabinet under full configuration,including storage batteries)
420 kg (assembly cabinet)
Power consumption
Power consumption of a full configuration cabinet:
3500 W (when the air conditioner/the heatexchanger is not working)
5500 W (when the air conditioner is cooling thecabinet)
6100 W (when the air conditioner is heating thecabinet)
4150 W (when the heat exchanger is exchangingthe heat)
6240 W (when the heat exchanger is heating thecabinet)
Working environmenttemperature
Cabinet with an air conditioner: -40C to +55C
Cabinet with an heat exchanger: -40C to +45C
Storage battery cabinet: -20C to +45C
Startup temperatureBTS3012A can be started at -40C. The startuptime is less than 2 hours after the BTS is heated to -
10C.
Storage temperature -40C to +70C
Working environmentrelative humidity
5% to 95%
Clock
Frequency: 1.3 % 107Hz, with precision at delivery
higher than 0.05 ppm
Temperature drift: < !5 % 10-8
(0C to 70C)
Annual aging rate:< !1 % 10-7
Input power
Normal working voltage: 90 V AC to 276 V AC/47 Hzto 53 Hz
Tolerant voltage: 300V ACSecurity In compliance with IEC60950 standard
Earthquake-proofperformance
In compliance with IEC Class 4M3 standard
EMC In compliance with ETS 300-342-3 related standard
Waterproof and dustproofperformance
In compliance with IP55 standard
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7.2 Performance Specifications of BTS3X Cabinet
The performance specifications of BTS3X cabinet are shown in Table 7-5.
Table 7-5 Performance specifications of BTS3X cabinet
Performanceclassification
Parameter Specifications
Channel capacity 8CH/TRX
GSM850:
Uplink: 824 MHz to 849 MHz
Downlink: 869 MHz to 894 MHz
GSM900:Uplink: 890 MHz to 915 MHz
Downlink: 935 MHz to 960 MHz
GSM1800:
Uplink: 1,710 MHz to 1,785 MHz
Downlink: 1,805 MHz to1,880 MHz
GSM1900:
Uplink: 1,850 MHz to 1,910 MHz
Downlink: 1,930 MHz to1,990 MHz
System indicesFrequency band
RGSM:
Uplink: 876 MHz to 915 MHz
Downlink: 921 MHz to 960 MHz
Static receivesensitivity
GSM850: -110dBm
GSM900: -110dBm
GSM1800: -109dBm
GSM1900: -109dBm
RGSM: -110dBm
Block featureSatisfies requirement of GSM11.21protocol
Anti-interferencefeature
Satisfies requirement of GSM11.21protocol
Receivingperformance
Intermodulationsuppression
Satisfies requirement of GSM11.21protocol
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Performanceclassification
Parameter Specifications
Stray radiationSatisfies requirement of GSM11.21
protocol
Maximum transmitpower of eachTRX
40W TRX: 46.0 dBm
60W TRX: 47.8 dBm
40W TRX + PBU: 49.0 dBm
ETR: 46.0 dBm (8PSK)/47.8 dBm (GMSK)
Absolute transmitpower precision
2 ! 0.5 dB (temperature within normalrange)
2 ! 1 dB (temperature out of normalrange)
Static powercontrol range
Level 0 to 10
Dynamic powercontrol range
Level 0 to 15
Transmit spectrumSatisfies requirement of GSM11.21protocol
Intermodulationsuppression
Satisfies requirement of GSM11.21protocol
Stray radiationSatisfies requirement of GSM11.21
protocol
Frequency error 0.05 ppm
Transmittingperformance
Phase error5 (rms)
20 (peak)
7.3 External Physical Interfaces
The external physical interfaces of BTS30 and BTS312 are shown in Table 7-6.
Table 7-6 External physical interfaces of BTS30 and BTS312
Interface Type Quantity Function realized
Abis interface E1 8 pairs
Provides 75 ohm/120ohm E1 interface
Supports cascading
Provides O&M link(OML)
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Interface Type Quantity Function realized
STM-1 2 pairs
Provides SDH opticaltransmissioninterface
Supports cascading
Provides OML
FCLK 1 FCLK test port
13 MCLK 1 13 MHz clock test portClock interface(CLK)
SYNC 1External synchronizationinput end (satellite)
Maintenanceinterface
MMI Serialport
1Provides localmaintenance channel
Power supply3 power inputmodes
-48 VDC input power +24VDC input power
220 VAC input power Power andgrounding
Grounding 1 PGND
Feeder cableinterface
RF signal 12Feeder input port
Data businterface
2Data bus interfaceDCF1 and DCF2
Clock bus
interface
2Combined cabinet clockbus interface CKB1 and
CKB2Combined cabinetinterface
Combinedcabinetcascadinginterface
6
CDU combined cabinetcascading interface
Alarm 2
External alarminterface EAC1 andEAC2
Can be connected toenvironment monitor
Managementsignal interface
Storagebatterymanagement
1Connects to storagepower pool signalPWRC
The external physical interfaces of BTS3006A are shown in Table 7-7.
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Table 7-7 BTS3006A external physical interfaces
Interface Type Quantity Function realized
Abis interface E1 4 pairs
Provides 75 ohm/120 ohm
E1 interface
Supports cascading
Provides OML
FCLK 1 FCLK test portClock interface(CLK) 13 MCLK 1 13 MHz clock test port
Maintenanceinterface
MMI serialport
1Provides near end maintenancechannel
Power supply 1It can be used as the input portfor 220 V AC/110V AC power
supply.
Power and
grounding
PGND 1 1 grounding interface
Feeder cableinterface
RF signal 6Feeder input interface
The external physical interfaces of BTS3012A are shown in Table 7-8.
Table 7-8 BTS3012A external physical interfaces
Interface Type Quantity Function realized
Abis interface E1 4 pairs
Provides 75-ohm/120-ohmE1 interface
Supports cascading
Provides OML
FCLK 1 FCLK test portClock interface(CLK) 13 MCLK 1 13 MHz clock test port
Maintenanceinterface
MMI serialport
1Provides near end maintenancechannel
Power supply 1 It can be used as the input portfor 220 V AC/110V AC powersupply.
Power andgrounding
PGND 1 1 grounding interface
Feeder cableinterface
RF signal 12Feeder input interface
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Technical Manual − System DescriptionM900/M1800 BTS3X Series Base Transceiver Station Appendix A Environment Requirements
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Appendix A Environment Requirements
A.1 Storage Requirements
A.1.1 Climate Requirements
The storage environment of BTS should meet the climate requirements listed in Table
A-1.
Table A-1 Climate requirements
Item Range
Temperature -40°C ~ +70°C
Temperature change rate 1°C /min
Relative humidity 5% ~ 100%
Altitude 3000 m
Atmospheric pressure 70 kPa ~ 106 kPa
Solar radiation 1120 W/s²
Heat radiation 600 W/s²
Wind speed 50 m/s
A.1.2 Waterproof Requirements
The storage environment of BTS should meet the waterproof requirements listed
below.
1) If the equipment is to be stored inside the equipment room, place it as required.
Ensure that there is no water on the ground or no water flows into the package.
Do not store the equipment near such places as automatic fire-fighting facilities
and heating facilities where water leakage may occur.
2) If the equipment is to be placed outside the equipment room, all the following
four conditions should be met.
The package is kept well.
There are waterproof measures to prevent rain from entering the package.
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Technical Manual − System DescriptionM900/M1800 BTS3X Series Base Transceiver Station Appendix A Environment Requirements
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A-2
There is no water on the ground where the package is placed or no water flows
into the package.
The package is not exposed to the sunshine.
A.1.3 Biological Requirements
The storage environment of BTS should meet the biological requirements listed below.
Prevent the propagation of epiphyte and mildew.
Prevent damage by rodent animals, such as mouse.
A.1.4 Air Cleanness Requirements
The storage environment of BTS should meet the air cleanness requirements listed
below.
There is no explosive, conductive, magneto-conductive or corrosive dust in the
air.
The density of mechanically active materials complies with Table A-2.
Table A-2 Density requirement for mechanically active materials
Mechanically activematerial
Unit Content
Suspending dust mg/m³ ≤5
Precipitable dust mg/m²·h ≤500
Sand mg/m³ ≤300
Note:
Suspending dust: diameter ≤75 µm
Precipitable dust: 75µm≤ diameter ≤150 µm
Sand: 150µm≤ diameter ≤1000 µm
The density of chemically active materials complies with Table A-3.
Table A-3 Density requirement for chemically active materials
Chemically activematerial
UnitContent
SO2 mg/m³ ≤0.30
H2S mg/m³ ≤0.10
NOx mg/m³ ≤0.05
NH3 mg/m³ ≤1.00
Cl2 mg/m³ ≤0.10
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Technical Manual − System DescriptionM900/M1800 BTS3X Series Base Transceiver Station Appendix A Environment Requirements
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A-3
Chemically activematerial
UnitContent
HCl mg/m³ ≤0.10
HF mg/m³ ≤0.01
O3 mg/m³ ≤0.05
A.1.5 Mechanical Stress Requirements
The storage environment of BTS should meet the mechanical stress requirements
listed in Table A-4.
Table A-4 Mechanical stress requirements
Item Sub-item Range
Offset ≤1.5 mm None
Accelerated speed None ≤5 m/s²Sinusoidalvibration
Frequency range 2 ~ 9 Hz 9 ~ 200 Hz
Impulse responsespectrum II
≤250 m/s²Non-stableimpulse
Payload ≤5 kPa
Note:
Impulse response spectrum refers to the maximum accelerated speedresponse curve generated by the equipment under the specified impulsemotivation. Impulse response spectrum II means that the duration of half-sineimpulse response spectrum is 6 ms.
Payload refers to the bearable pressure from the upper piled equipment withpackage in prescribed piling mode.
A.2 Transportation Requirements
A.2.1 Climate Requirements
The transportation environment of BTS should meet the climate requirements listed in
Table A-5.
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Technical Manual − System DescriptionM900/M1800 BTS3X Series Base Transceiver Station Appendix A Environment Requirements
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Table A-5 Climate requirements
Item Range
Temperature -40°C ~ +70°C
Temperature change rate ≤3°C /min
Relative humidity 5% ~ 100%
Altitude ≤3000 m
Atmospheric pressure 70kPa ~ 106kPa
Solar radiation ≤1120 W/s²
Heat radiation ≤600 W/s²
Wind speed ≤50 m/s
A.2.2 Waterproof Requirements
The transportation environment of BTS should meet the waterproof requirements
listed below.
The package is kept well. Waterproof measures shall be taken to prevent rain entering the package.
There is no water inside the transportation vehicles.
A.2.3 Biological Requirements
The transportation environment of BTS should meet the biological requirements listed
below.
Prevent the propagation of epiphyte and mildew.
Prevent damage by rodent animals, such as mouse.
A.2.4 Air Cleanness Requirements
The transportation environment of BTS should meet the air cleanness requirements
listed below.
There is no explosive, conductive, magneto-conductive or corrosive dust in the
air.
The density of mechanically active materials complies with Table A-6.
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Technical Manual − System DescriptionM900/M1800 BTS3X Series Base Transceiver Station Appendix A Environment Requirements
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Table A-6 Density requirement for mechanically active materials
Mechanically activematerial
Unit Content
Suspending dust mg/m³ ≤35
Precipitable dust mg/m²·h ≤0.2
Sand mg/m³ ≤30
Note:
Suspending dust: diameter ≤75 µm
Precipitable dust: 75µm≤ diameter ≤150 µm
Sand: 150µm≤ diameter ≤1000 µm
The density of chemically active materials complies with Table A-7.
Table A-7 Density requirement for chemically active materials
Chemically active material Unit Content
SO2 mg/m³ ≤0.30
H2S mg/m³ ≤0.10
NOx mg/m³ ≤0.05
NH3 mg/m³ ≤1.00
Cl2 mg/m³ ≤0.10
HCl mg/m³ ≤0.10
HF mg/m³ ≤0.01
O3 mg/m³ ≤0.05
A.2.5 Mechanical Stress Requirements
The transportation environment of BTS should meet the mechanical stressrequirements listed in Table A-8.
Table A-8 Mechanical stress requirements
Item Sub-item Range
Offset ≤3.5 mm None None
Accelerated speed None ≤10 m/s² ≤15 m/s²Sinusoidalvibration
Frequency range 2 ~ 9 Hz 9 ~ 200 Hz200 ~ 500Hz
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Item Sub-item Range
Spectrum density ofaccelerated speed
30 m²/s³ 3 m²/s³ 1 m²/s³Random
vibrationFrequency range 2 ~ 10 Hz 10 ~ 200 Hz
200 ~ 500Hz
Impulse responsespectrum II
≤250 m/s²Non-stableimpulse
Payload ≤10 kPa
Note:
Impulse response spectrum refers to the maximum accelerated speedresponse curve generated by the equipment under the specified impulsemotivation. Impulse response spectrum II means that the duration of half-sineimpulse response spectrum is 6 ms.
Payload refers to the bearable pressure from the upper piled equipment withpackage in prescribed piling mode.
A.3 Operating Environment Requirements
A.3.1 Climate Requirements
The operation environment of BTS should meet the climate requirements listed in
Table A-9.
Table A-9 Climax requirements
Item Range
Temperature
Air-conditioned cabinet with a heater: -40°C ~ 55°C
Heat-exchanged cabinet with a heater: -40°C ~ 45°C
Air-conditioned cabinet without a heater: -10°C ~ 55°C
Heat-exchanged cabinet without a heater: -10°C ~ 45°C
Temperaturechange rate
≤3°C /min
Relative humidity 5% ~ 100%
Altitude ≤3000 m
Atmosphericpressure
70 kPa ~ 106 kPa
Solar radiation ≤1120 W/m²
Heat radiation ≤600 W/m²
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Item Range
Wind speed ≤50 m/s
Note:
The measurement point of the temperature and humidity is 1.5 m over the floorand 0.4 m at the front of the cabinet. There should be no the protection board atthe front or back of the cabinet.
A.3.2 Biological Requirements
The operation environment of BTS should meet the biological requirements listed
below.
Prevent the propagation of epiphyte and mildew.
Prevent damage by rodent animals, such as mouse.
A.3.3 Air Cleanness Requirements
The operation environment of BTS should meet the air cleanness requirements listed
below.
There is no explosive, conductive, magneto-conductive or corrosive dust in the
air.
The density of chemically active materials complies with Table A-10.
Table A-10 Density requirement for chemically active materials
Chemically activematerial
Unit Content
SO2 mg/m³ ≤0.30
H2S mg/m³ ≤0.10
NH3 mg/m³ ≤1.00
Cl2 mg/m³ ≤0.10
HCL mg/m³ ≤0.10
HF mg/m³ ≤0.01
O3 mg/m³ ≤0.05
NOx mg/m³ ≤0.05
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A.3.4 Mechanical Stress Requirements
The operation environment of BTS should meet the mechanical stress requirements
listed in Table A-11.
Table A-11 Mechanical stress requirements
Item Sub-item Range
Offset ≤3 mm None
Accelerated speed None ≤10.0 m/s²Sinusoidalvibration
Frequency range 2 ~ 9 Hz 9 ~ 200 Hz
Impulse responsespectrum II
≤250 m/s²Non-stable
impulsePayload 0
Note:
Impulse response spectrum refers to the maximum accelerated speedresponse curve generated by the equipment under the specified impulsemotivation. Impulse response spectrum II means that the duration of half-sineimpulse response spectrum is 6 ms.
Payload refers to the bearable pressure from the upper piled equipment withpackage in prescribed piling mode.
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Technical Manual − System DescriptionM900/M1800 BTS3X Series Base Transceiver Station Appendix B Abbreviations
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B-1
Appendix B Abbreviations
A
ABB Abis Bypass Board
ABA Abis Bypass Assistant Board
AGCH Access Grant Channel
AMR Adaptive Multi Rate
APC Automatic Power Control
APL Advanced Phase Lock
ASU Access network SDH transmission Unit
B
BCCH Broadcast Control CHannel
BER Bit Error Ratio
BSC Base Station Controller
BSIC Base transceiver Station Identity Code
BSS Base Station System
BTS Base Transceiver Station
BTSM BTS Management
C
CBCH Cell Broadcast CHannel
CCCH Common Control CHannel
CCH Control Channel
CDU Combining and Distribution Unit
D
DCCH Dedicated Control CHannel
DL Data Link (layer)
DRX Disconnectinuous Reception
DT Discontinuous transmission (mechanism)
E
ECDU Enhanced Combining and Distribution Unit
EDU Enhanced Duplexer Unit
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Technical Manual − System DescriptionM900/M1800 BTS3X Series Base Transceiver Station Appendix B Abbreviations
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B-2
EFR Enhanced Full Rate
EMU Environment Monitor Unit
ESCU Enhanced Simple Combining Unit
ETR EDGE Transceiver
F
FACCH Fast ACCH
FACCH/F Fast Associated Control Channel/Full rate
FCCH Frequency Correction CHannel
FDMA Frequency Division Multiple Addressing
FH Frequency Hopping
FMU Fan Monitor Unit
FN Frame Number
G
GMSC Mobile service Switching Centre
GPRS General Packet Radio Service
GSM Global System for Mobile communications
H
HDLC High level Data Link Control
HDSL High speed digital Subscriber Line
HLR Home Location Register
I
ID Identification/Identity
IEC International Electrotechnical Commission
IMEI International Mobile Subscriber Identity
IMSI International Mobile Subscriber Identity
ISDN Integrated Services Digital Network
L
L1 Layer 1
L2 Layer 2
L2ML Layer 2 Management Link
L3 Layer 3
LAPB Location Area
LAPD Link Access Protocol on the D channel
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Technical Manual − System DescriptionM900/M1800 BTS3X Series Base Transceiver Station Appendix B Abbreviations
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B-3
LAPD Link Access Protocol on the Dm channel
Lm Half rate traffic channel
LNA Low Noise Amplifier
M
MCK Main Clock board
MDU Multi-channel Combining and Distribution Unit
MM Mobility Management
MMI Man Machine Interface
MS: Mobile Station
MSC Mobile services Switching Centre, Mobile Switching Centre
MSISDN Mobile Station International ISDN Number
MTBF Mean Time Between Failures
O
O&M, OM Operations & Maintenance Centre
OMC Operations & Maintenance Centre
OML Operations & Maintenance Centre
OSI Open System Interconnection
P
PAT Passive Transmission Board
PBU Power Boost Unit
PCH Paging Channel
PH Physical (layer)
PLMN: Public Land Mobile Network
PMU Power Monitor Unit
PP Point-to-Point Protocol
PSTN Public Switched Telephone Network
PSU Power Supply Unit
R
RACH Random Access CHannel
RCDU Railway Combining and Distribution Unit
REDU Railway Enhanced Duplexer Unit
RF Radio Frequency
RR Radio Resource management
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B-4
RSL Radio Signaling Link
RXLEV Received signal level
RXQUAL Received Signal Quality
S
SACCH Slow Associated Control CHannel
SACCH/C4 Slow Associated Control CHannel/SDCCH/4
SACCH/C8 Slow Associated Control CHannel/SDCCH/8
SACCH/T Slow Associated Control CHannel/Traffic channel
SACCH/TF Slow Associated Control CHannel/Traffic channel Full rate
SCH Synchronization CHannel
SCU: Simple Combining Unit
SDCCH Stand-alone Dedicated Control CHannel
SDH Synchronous Digital Hierarchy
SFH Slow Frequency Hopping
SIM Subscriber Identity Module
SMS Short Message Service
SMSCB Short Message Service Cell Broadcast
T
TA Timing Advance
TC Transcoder
TCH Traffic CHannel
TCH/F A full rate TCH
TCH/F2.4 A full rate data TCH (2.4kbit/s)
TCH/F4.8 A full rate date TCH (4.8kbit/s)
TCH/F9.6 A full rate data TCH (9.6kbit/s)
TCH/FS A full rate Speech TCH
TCU Temperature Control Unit
TDU Time Distribution Unit
TDMA Time Division Multiple Access
TEI Terminal Equipment Identifier
TES Transmission Extension power Supply unit
TEU Transmission Extension Unit
TMSI International Mobile Subscriber Identity
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B-5
TMU Timing/Transmission and Management Unit
TRX Transceiver unit
TRAU Transcoder and Rate Adaptor Unit
TS Time Slot
V
VAD Voice Activity Detection
VLR Visitor Location Register
W
WS Work Station
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Technical Manual – System DescriptionM900/M1800 BTS3X Series Base Transceiver Station Index
Huawei Technologies Proprietary
i-1
Index
Numerics
1+1 backup, 5-2
A
abbreviation, B-1
Abis transmission bypass, 5-3
alarm management, 6-2
AMR, 4-8 APC, 4-7
APL, 2-2
B
basic function
hardware function, 4-2
software function, 4-1
biological requirement, A-2
board description, 3-9
BTS30
Abis interface, 7-6
cabinet configuration, 3-1
cabinet specification, 7-1
clock, 7-1
clock interface, 7-7
dimension, 3-1
earthquake-proof performance, 7-1
EMC, 7-1
environment relative humidity, 7-1
environment temperature, 7-1
external physical interface, 7-6
power consumption, 7-1
power supply, 7-1
security performance, 7-1
system architecture, 3-7
typical configuration, 3-2
weight, 7-1
BTS3006A
Abis interface, 7-8
cabinet configuration, 3-3
cabinet specification, 7-2
clock, 7-3
clock interface, 7-8
dimension, 3-3
earthquake-proof performance, 7-3
EMC, 7-3
external physical interface, 7-8 power consumption, 7-3
power supply, 7-3
relative humidity, 7-3
security performance, 7-3
storage temperature, 7-3
typical configuration, 3-4
waterproof and dustproof performance, 7-3
weight, 7-2
working temperature, 7-3
BTS3012A
Abis interface, 7-8
cabinet configuration, 3-5
cabinet specification, 7-3
clock, 7-4
clock interface, 7-8
dimension, 3-5
earthquake-proof performance, 7-4
EMC, 7-4
environment relative humidity,7-4
external physical interface, 7-8
power consumption, 7-4
power supply, 7-4
security performance, 7-4
startup temperature, 7-4
storage temperature, 7-4
typical configuration, 3-6
waterproof and dustproof performance, 7-4
weight, 7-4
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working temperature, 7-4
BTS312
Abis interface, 7-6
cabinet configuration, 3-2
cabinet specification, 7-2
clock, 7-2
clock interface, 7-7
dimension, 3-2
environment relative humidity, 7-2
environment temperature, 7-2
external physical interface, 7-6
power consumption, 7-2
power supply, 7-2
system architecture, 3-7
typical configuration, 3-3
weight, 7-2
BTS312A
earthquake-proof performance, 7-2
EMC, 7-2
security performance, 7-2
BTS3X
performance specification, 7-5
BTS3X series, 1-2
advantage, 2-2
application, 1-2
basic function, 4-1
board description table, 3-9
cabinet specification, 7-1
evolution, 2-5
modular structure, 2-1
O&M function, 2-2
system architecture, 3-6
transmission mode, 2-5
C
cabinet configuration
BTS30, 3-1
BTS3006A, 3-3
BTS3012A, 3-5
BTS312, 3-2
CDU, 2-1
chain networking,4-3
,4-4
channel supported
channel combination, 4-6
channel type, 4-5
chemically active material, density requirement, A-2
cleanness requirement, A-2
climate requirement, A-1
clock phase locking, 2-2
coding key design, 5-2
D
data check, 5-3
discontinuous transmission, 4-7
distributed power supply, 5-3
diversity receiving, 4-6
E
E1 networking
chain networking, 4-3
ring networking, 4-4
star networking, 4-3
tree networking, 4-3
E-Abis technology, 2-1
EMC design, 5-1
external physical interface, 7-6
F
fault isolation, 5-3
fault monitoring and handling, 5-1
fault protection, 5-1
frequency band, 7-5
frequency error, 7-6
frequency hopping, 4-6
baseband hopping, 4-7
RF hopping, 4-7
L
LNA, 2-1
local maintenance, 6-1
M
maintainability design, 5-2
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Technical Manual – System DescriptionM900/M1800 BTS3X Series Base Transceiver Station Index
maintenance management, 6-3
mechanical stress requirement, A-3
N
N+1 backup, 5-3
networking mode
E1 networking, 4-2
satellite transmission networking, 4-4
SDH networking, 4-4
O
O&M architecture, 6-1
O&M function, 6-2
alarm management, 6-2
maintenance management, 6-3
performance measurement and test, 6-3
security management, 6-2
OMC Shell, 6-2
operation environment
biological requirement, A-7
cleanness requirement, A-7
climate requirement, A-6
mechanical stress requirement, A-8
P
performance measurement and test, 6-3
phase error, 7-6
power control, 4-7
dynamic, 4-7
static, 4-7
power supply
110V, 2-4
220V, 2-3
precipitable dust, density requirement, A-2
process monitoring, 5-3
R
remote maintenance, 6-2
RF technology, 2-1
running environment protection, 5-2
S
satellite networking, 4-5
SDH networking, 4-4
chain networking, 4-4
ring networking, 4-4
security management, 6-2
star networking, 4-3
storage environment, A-1
suspending dust, density requirement, A-2
system architecture
antenna and feeder subsystem, 3-9
common subsystem, 3-8
signal processing subsystem, 3-9
system indices, 7-5
T
technical specification, 7-1
transmitting performance, 7-6
transportation environment
biological requirement, A-4
cleanness requirement, A-4
climate requirement, A-3
mechanical stress requirement, A-5
waterproof requirement, A-4
tree networking, 4-3
TTA, 2-1
U
uninterrupted power supply, 5-2
V
VAD, 4-8