Bts3812 E And Bts3812 A Product Description(V100 R008 04)

BTS3812E and BTS3812A

V100R008

Product Description

Issue 04

Date 2007-06-30

Part Number 31400652

Huawei Technologies Proprietary

Huawei Technologies Co., Ltd. provides customers with comprehensive technical support and service. For anyassistance, please contact our local office or company headquarters.

Huawei Technologies Co., Ltd.Address: Huawei Industrial Base

Bantian, LonggangShenzhen 518129People's Republic of China

Website: http://www.huawei.com

Email: [email protected]

Copyright © 2007 Huawei Technologies Co., Ltd. All rights reserved.No part of this document may be reproduced or transmitted in any form or by any means without prior writtenconsent of Huawei Technologies Co., Ltd. Trademarks and Permissions

and other Huawei trademarks are the property of Huawei Technologies Co., Ltd.All other trademarks and trade names mentioned in this document are the property of their respective holders. NoticeThe information in this document is subject to change without notice. Every effort has been made in thepreparation of this document to ensure accuracy of the contents, but the statements, information, andrecommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Technologies Proprietary

http://www.huawei.com

mailto:[email protected]

Contents

About This Document.....................................................................................................................1

1 Introduction to the BTS3812E..................................................................................................1-11.1 Overview of the BTS3812E............................................................................................................................1-21.2 System Architecture of the BTS3812E...........................................................................................................1-31.3 Software Structure of the BTS3812E/BTS3812A..........................................................................................1-41.4 Logical Structure of the BTS3812E................................................................................................................1-5

2 Introduction to the BTS3812A.................................................................................................2-12.1 Overview of the BTS3812A............................................................................................................................2-22.2 Introduction to the BTS3812A........................................................................................................................2-32.3 Software Structure of the BTS3812E/BTS3812A..........................................................................................2-42.4 Logical Structure of the BTS3812A................................................................................................................2-6

3 Configuration Types of the BTS3812E/BTS3812A...............................................................3-1

4 Transport Subsystem of the BTS3812E/BTS3812A..............................................................4-14.1 Components of the BTS3812E/BTS3812A Transport Subsystem.................................................................4-24.2 Functions of the BTS3812E/BTS3812A Transport Subsystem......................................................................4-2

5 Baseband Subsystem of the BTS3812E/BTS3812A..............................................................5-15.1 Components of the BTS3812E/BTS3812A Baseband Subsystem.................................................................5-25.2 Functions of the BTS3812E/BTS3812A Baseband Subsystem......................................................................5-2

6 RF Subsystem of the BTS3812E/BTS3812A...........................................................................6-16.1 Components of the BTS3812E/BTS3812A RF Subsystem............................................................................6-26.2 Functions of the BTS3812E/BTS3812A RF Subsystem.................................................................................6-2

7 Control Subsystem of the BTS3812E/BTS3812A..................................................................7-17.1 Components of the BTS3812E/BTS3812A Control Subsystem.....................................................................7-27.2 Functions of the BTS3812E/BTS3812A Control Subsystem.........................................................................7-2

8 Power subsystem of the BTS3812E.........................................................................................8-18.1 Components of the BTS3812A Power Subsystem..........................................................................................8-28.2 Power distribution of the BTS3812E..............................................................................................................8-2

9 Power Subsystem of the BTS3812A........................................................................................9-19.1 Components of the BTS3812A Power Subsystem..........................................................................................9-29.2 Power Distribution of the BTS3812A.............................................................................................................9-2

BTS3812E and BTS3812AProduct Description Contents

Issue 04 (2007-06-30) Huawei Technologies Proprietary i

10 Environment Monitoring Subsystem of the BTS3812A.................................................10-110.1 Components of the Environment Monitoring Subsystem of the BTS3812A..............................................10-210.2 Functions of the BTS3812A Environment Monitoring Subsystem............................................................10-2

11 Antenna Subsystem of the NodeB......................................................................................11-111.1 Typical 3G Antenna System (Non-RET)....................................................................................................11-211.2 Typical Antenna System Shared Between 2G and 3G Systems (Non-RET) .............................................11-611.3 Typical 3G Antenna System (RET)............................................................................................................11-611.4 Typical Antenna System Shared Between 2G and 3G Systems (RET)......................................................11-6

12 Clock Synchronization Modes of the BTS3812E/BTS3812A..........................................12-112.1 Synchronization of the BTS3812E/BTS3812A with Iub Clock.................................................................12-212.2 Synchronization of the BTS3812E/BTS3812A with GPS Clock...............................................................12-212.3 Synchronization of the BTS3812E with the External Reference Clock.....................................................12-312.4 Free-Run Internal Clock of the BTS3812E/BTS3812A.............................................................................12-4

13 Signal Flow of the BTS3812E/BTS3812A...........................................................................13-113.1 Signal Flow of Downlink Services of the BTS3812E/BTS3812A.............................................................13-213.2 Signal Flow of Uplink Services of the BTS3812E/BTS3812A..................................................................13-413.3 Signal Flow of Signaling Processing of the BTS3812E/BTS3812A..........................................................13-6

14 Topologies of the BTS3812E/BTS3812A............................................................................14-114.1 Star Topology .............................................................................................................................................14-214.2 Chain Topology ..........................................................................................................................................14-214.3 Tree Topology ............................................................................................................................................14-314.4 Topology of the NodeB Cascaded with RRUs............................................................................................14-414.5 2G/3G Concurrent Transmission................................................................................................................14-414.6 Topology of the Hub NodeB.......................................................................................................................14-6

15 OM Subsystem of the NodeB..............................................................................................15-115.1 Components of the NodeB OM Subsystem................................................................................................15-215.2 Functions of the NodeB OM Subsystem.....................................................................................................15-3

16 Technical Specifications for the BTS3812E/BTS3812A...................................................16-116.1 Capacity Specifications for the BTS3812E/BTS3812A.............................................................................16-316.2 RF Specifications for the BTS3812E/BTS3812A.......................................................................................16-316.3 Engineering Specifications for the BTS3812E...........................................................................................16-416.4 Engineering Specifications for the BTS3812A...........................................................................................16-616.5 Surge Protection Specifications for Ports on the BTS3812E/BTS3812A...................................................16-816.6 Ports on the BTS3812E...............................................................................................................................16-916.7 Ports on the BTS3812A.............................................................................................................................16-1116.8 Environmental Conditions of the BTS3812E............................................................................................16-13

16.8.1 Working Environment Requirements of the BTS3812E..................................................................16-1316.8.2 Transportation Requirements of the BTS3812E..............................................................................16-1516.8.3 Storage Requirements of the BTS3812E.........................................................................................16-17

16.9 Environmental Conditions of the BTS3812A...........................................................................................16-20

ContentsBTS3812E and BTS3812A

Product Description

ii Huawei Technologies Proprietary Issue 04 (2007-06-30)

16.9.1 Working Environment Requirements of the BTS3812A.................................................................16-2016.9.2 Transportation Requirements of the BTS3812A..............................................................................16-2216.9.3 Storage Requirements of the BTS3812A.........................................................................................16-25

16.10 Compliant Standards of the BTS3812E..................................................................................................16-2716.11 Compliant Standards of the BTS3812A..................................................................................................16-29

BTS3812E and BTS3812AProduct Description Contents

Issue 04 (2007-06-30) Huawei Technologies Proprietary iii

Figures

Figure 1-1 BTS3812E in full configuration.........................................................................................................1-3Figure 1-2 Software structure of the BTS3812E/BTS3812A..............................................................................1-4Figure 1-3 Logical structure of the BTS3812E....................................................................................................1-6Figure 2-1 Components of the BTS3812A system..............................................................................................2-3Figure 2-2 Software structure of the BTS3812E/BTS3812A..............................................................................2-4Figure 2-3 Logical structure of the BTS3812A....................................................................................................2-6Figure 4-1 Iub interface boards in the baseband subrack.....................................................................................4-2Figure 5-1 Position of the HULP, HDLP, and HBBI/HBOI in the baseband subrack........................................5-2Figure 6-1 Components of the RF subsystem......................................................................................................6-2Figure 6-2 Logical structure of the RF subsystem...............................................................................................6-3Figure 7-1 Positions of the NMPT and NMON in the baseband subrack............................................................7-2Figure 8-1 Components of the BTS3812E power subsystem..............................................................................8-2Figure 8-2 Power distribution of the BTS3812E..................................................................................................8-3Figure 9-1 Components of the BTS3812A power subsystem..............................................................................9-2Figure 9-2 Power Distribution of the BTS3812A................................................................................................9-3Figure 10-1 Components of the environment monitoring subsystem ...............................................................10-2Figure 11-1 Single polarization antenna (without TMA) on the pole on the rooftop........................................11-3Figure 11-2 Single polarization antenna (with TMA) on the tower platform....................................................11-5Figure 12-1 Synchronization with Iub interface clock signals...........................................................................12-2Figure 12-2 Synchronization with GPS clock signals........................................................................................12-3Figure 12-3 Synchronization with external reference clock signals..................................................................12-3Figure 12-4 Processing and distribution of the internal clock signals................................................................12-4Figure 13-1 Signal flow of downlink services when the HDLP is not configured............................................13-2Figure 13-2 Signal flow of downlink services when the HDLP is configured..................................................13-3Figure 13-3 Signal Flow of Uplink Services When the HULP is Configured...................................................13-4Figure 13-4 Signal Flow of Uplink Services When the HULP is Configured...................................................13-5Figure 13-5 Signal flow of signaling processing of the NodeB.........................................................................13-6Figure 14-1 Star topology ..................................................................................................................................14-2Figure 14-2 Chain topology ..............................................................................................................................14-3Figure 14-3 Tree topology .................................................................................................................................14-3Figure 14-4 Topology of the BTS3812E/BTS3812A cascaded with RRUs......................................................14-4Figure 14-5 2G/3G co-transmission in fractional ATM mode...........................................................................14-5Figure 14-6 2G/3G co-transmission in CES mode.............................................................................................14-6

BTS3812E and BTS3812AProduct Description Figures

Issue 04 (2007-06-30) Huawei Technologies Proprietary v

Figure 14-7 Network topology of the hub NodeB.............................................................................................14-7Figure 15-1 NodeB OM subsystem....................................................................................................................15-2

FiguresBTS3812E and BTS3812A

Product Description

vi Huawei Technologies Proprietary Issue 04 (2007-06-30)

Tables

Table 3-1 Configurations of the BTS3812E.........................................................................................................3-1Table 3-2 Configurations of the BTS3812A........................................................................................................3-2Table 16-1 Capacity of the baseband under 3 x 4 configuration........................................................................16-3Table 16-2 Working frequency...........................................................................................................................16-3Table 16-3 Receiver sensitivity (Band I: 2100 MHz)........................................................................................16-4Table 16-4 Receiver sensitivity (Band II: 1900 MHz; band III: 1800 MHz; band V: 850 MHz; band VIII: 900MHz)...................................................................................................................................................................16-4Table 16-5 Physical dimensions of the BTS3812E............................................................................................16-4Table 16-6 Equipment Weight...........................................................................................................................16-5Table 16-7 Parameters of the power supply.......................................................................................................16-5Table 16-8 Power consumptions........................................................................................................................16-6Table 16-9 Reliability of the BTS3812E............................................................................................................16-6Table 16-10 Physical dimensions of the BTS3812A..........................................................................................16-7Table 16-11 Equipment Weight.........................................................................................................................16-7Table 16-12 Parameters of the power supply.....................................................................................................16-7Table 16-13 Power consumptions......................................................................................................................16-8Table 16-14 Reliability of the BTS3812A.........................................................................................................16-8Table 16-15 Surge protection specifications for the BTS3812E/BTS3812A.....................................................16-9Table 16-16 Transmission ports of the BTS3812E............................................................................................16-9Table 16-17 Cascading ports connecting to the 2G equipment........................................................................16-10Table 16-18 Specifications for the external alarm ports...................................................................................16-10Table 16-19 Other external ports of the BTS3812E.........................................................................................16-10Table 16-20 Transmission ports of the BTS3812A..........................................................................................16-11Table 16-21 Cascading ports connecting to the 2G equipment........................................................................16-12Table 16-22 Specifications for the external alarm ports...................................................................................16-12Table 16-23 Other external ports of the BTS3812A........................................................................................16-12Table 16-24 Climatic requirements..................................................................................................................16-13Table 16-25 Requirements for physically active materials..............................................................................16-14Table 16-26 Requirements for chemically active materials.............................................................................16-14Table 16-27 Mechanical stress requirements...................................................................................................16-14Table 16-28 Climatic requirements..................................................................................................................16-15Table 16-29 Requirements for physically active materials..............................................................................16-16Table 16-30 Requirements for chemically active materials.............................................................................16-16Table 16-31 Mechanical stress requirements...................................................................................................16-17

BTS3812E and BTS3812AProduct Description Tables

Issue 04 (2007-06-30) Huawei Technologies Proprietary vii

Table 16-32 Climatic requirements..................................................................................................................16-17Table 16-33 Requirements for physically active materials..............................................................................16-18Table 16-34 Requirements for chemically active materials.............................................................................16-19Table 16-35 Mechanical stress requirements...................................................................................................16-19Table 16-36 Climatic requirements..................................................................................................................16-20Table 16-37 Requirements for chemically active materials.............................................................................16-21Table 16-38 Mechanical stress requirements...................................................................................................16-22Table 16-39 Climatic requirements..................................................................................................................16-22Table 16-40 Requirements for physically active materials..............................................................................16-23Table 16-41 Requirements for chemically active materials.............................................................................16-23Table 16-42 Mechanical stress requirements...................................................................................................16-24Table 16-43 Climatic requirements..................................................................................................................16-25Table 16-44 Requirements for physically active materials..............................................................................16-26Table 16-45 Requirements for chemically active materials.............................................................................16-26Table 16-46 Mechanical stress requirements...................................................................................................16-27

TablesBTS3812E and BTS3812A

Product Description

viii Huawei Technologies Proprietary Issue 04 (2007-06-30)

About This Document

Purpose

This document describes the software and hardware structure, subsystems, configuration type,signal flow, clock synchronization, topology of the BTS3812E and BTS3812A. This documentalso lists the specifications for the capacity, RF, engineering, surge protection, and physicalports.

Related VersionsProduct Name Version

BTS3812E V100R008

BTS3812A V100R008

Intended Audience

This document is intended for:

l Network planners

l Field engineers

l System engineers

Update History

Refer to Changes in BTS3812E and BTS3812A Product Description.

Organization

1 Introduction to the BTS3812E

The BTS3812E is an indoor macro NodeB developed by Huawei. It complies with the protocolsof 3GPP R99/R4/R5/R6 FDD.

2 Introduction to the BTS3812A

The BTS3812A that is developed by Huawei is an outdoor macro NodeB. It complies with theprotocols of 3GPP R99/R4/R5/R6 FDD.

3 Configuration Types of the BTS3812E/BTS3812A

BTS3812E and BTS3812AProduct Description About This Document

Issue 04 (2007-06-30) Huawei Technologies Proprietary 1

A single BTS3812E/BTS3812A can support up to 12 cells. The configuration type is flexibleand multiple and the maximum configuration is 6 x 2 or 3 x 4.

4 Transport Subsystem of the BTS3812E/BTS3812A

The transport subsystem consists of the NDTI and the NUTI. It interfaces with the RNC formessage exchange between the NodeB and the RNC.

5 Baseband Subsystem of the BTS3812E/BTS3812A

The baseband subsystem, processing baseband signals, consists of the HULP, HDLP, and HBOI/HBBI.

6 RF Subsystem of the BTS3812E/BTS3812A

The RF subsystem consists of MAFUs and MTRUs and processes the RF signals.

7 Control Subsystem of the BTS3812E/BTS3812A

The control subsystem consists of the NMPT and the NMON. The control subsystem controlsand manages the entire NodeB system.

8 Power subsystem of the BTS3812E

The power subsystem of the BTS3812E is composed of the power subrack at the cabinet bottomand the power distribution subsystem inside the cabinet. The BTS3812E uses –48 V DC, +24V DC, or 220 V AC power supply.

9 Power Subsystem of the BTS3812A

The BTS3812A power subsystem is composed of the surge protection filter subrack, powersubrack, AC power distribution subrack, batteries, busbar, and load.

10 Environment Monitoring Subsystem of the BTS3812A

The unmanned BTS3812A is distributed in a vast area. Therefore, it must be effectivelymonitored to ensure stable operation. The BTS3812A environment monitoring subsystemprovides customized solutions regarding door control, infrared, smoke, water immersion,humidity, and temperature monitoring.

11 Antenna Subsystem of the NodeB

The NodeB antenna subsystem transmits the RF signals between the antenna ports of the NodeBcabinet and the antenna. The antenna subsystem also transmits signals to and receives signalsfrom the UE. The antenna system is classified into the non-RET antenna subsystem and RETantenna subsystem.

12 Clock Synchronization Modes of the BTS3812E/BTS3812A

The BTS3812E/BTS3812A supports multiple clock synchronization modes. The clock moduleinside the NMPT achieves clock synchronization of the BTS3812E/BTS3812A. The moduleprovides timing signals for the entire NodeB.

13 Signal Flow of the BTS3812E/BTS3812A

Signal flow of the BTS3812E and BTS3812A is of signal flow of downlink services, signal flowof uplink services, and signal flow of signaling processing.

14 Topologies of the BTS3812E/BTS3812A

Topology of the BTS3812E/BTS3812A refers to the transmission topology over the Iubinterface, that is, the topology of the transmission channels between the NodeB and the RNC.

About This DocumentBTS3812E and BTS3812A

Product Description

2 Huawei Technologies Proprietary Issue 04 (2007-06-30)

The BTS3812E/BTS3812A supports multiple topologies, such as star, chain, tree, cascadingRRUs, hub NodeB, and co-transmission with 2G equipment, to meet the requirements ofdifferent scenarios.

15 OM Subsystem of the NodeB

The NodeB OM subsystem manages, monitors, and maintains the software, hardware, andconfiguration of the NodeB. The NodeB OM subsystem provides various OM modes andmultiple maintenance platforms to meet different maintenance requirements.

16 Technical Specifications for the BTS3812E/BTS3812A

The technical specifications for the BTS3812E/BTS3812A cover items of the capacity, RF,engineering, surge protection, ports, environment, and compliant standards.

Conventions1. Symbol Conventions

The following symbols may be found in this document. They are defined as follows

Symbol Description

DANGERIndicates a hazard with a high level of risk that, if not avoided,will result in death or serious injury.

WARNINGIndicates a hazard with a medium or low level of risk which, ifnot avoided, could result in minor or moderate injury.

CAUTIONIndicates a potentially hazardous situation that, if not avoided,could cause equipment damage, data loss, and performancedegradation, or unexpected results.

TIP Indicates a tip that may help you solve a problem or save yourtime.

NOTE Provides additional information to emphasize or supplementimportant points of the main text.

2. General Conventions

Convention Description

Times New Roman Normal paragraphs are in Times New Roman.

Boldface Names of files,directories,folders,and users are in boldface. Forexample,log in as user root .

Italic Book titles are in italics.

Courier New Terminal display is in Courier New.

3. Command Conventions




Boldface The keywords of a command line are in boldface.

Italic Command arguments are in italic.

[ ] Items (keywords or arguments) in square brackets [ ] are optional.

{x | y | ...} Alternative items are grouped in braces and separated by verticalbars.One is selected.

[ x | y | ... ] Optional alternative items are grouped in square brackets andseparated by vertical bars.One or none is selected.

{ x | y | ... } * Alternative items are grouped in braces and separated by verticalbars.A minimum of one or a maximum of all can be selected.

[ x | y | ... ] * Alternative items are grouped in braces and separated by verticalbars.A minimum of zero or a maximum of all can be selected.

4. GUI Conventions


Boldface Buttons,menus,parameters,tabs,window,and dialog titles are inboldface. For example,click OK.

> Multi-level menus are in boldface and separated by the ">" signs.For example,choose File > Create > Folder .

5. Keyboard Operation


Key Press the key.For example,press Enter and press Tab.

Key1+Key2 Press the keys concurrently.For example,pressing Ctrl+Alt+Ameans the three keys should be pressed concurrently.

Key1,Key2 Press the keys in turn.For example,pressing Alt,A means the twokeys should be pressed in turn.

6. Mouse Operation

Action Description

Click Select and release the primary mouse button without moving thepointer.

Double-click Press the primary mouse button twice continuously and quicklywithout moving the pointer.

About This DocumentBTS3812E and BTS3812A

Product Description

4 Huawei Technologies Proprietary Issue 04 (2007-06-30)

Action Description

Drag Press and hold the primary mouse button and move the pointerto a certain position.



1 Introduction to the BTS3812E

About This Chapter

The BTS3812E is an indoor macro NodeB developed by Huawei. It complies with the protocolsof 3GPP R99/R4/R5/R6 FDD.

1.1 Overview of the BTS3812EThe BTS3812E is an indoor macro NodeB. The BTS3812E is used in urban areas, businesscenters, and large-sized and medium-sized cities with very high potential for traffic growth.

1.2 System Architecture of the BTS3812EThe BTS3812E system consists of the BTS3812E cabinet, antenna system, and LMT computer.

1.3 Software Structure of the BTS3812E/BTS3812AThe BTS3812E/BTS3812A software consists of the platform software, signaling protocolsoftware, operation and maintenance software (OM software), and data center.

1.4 Logical Structure of the BTS3812EThe BTS3812E is composed of the modules of the transport subsystem, baseband subsystem,RF subsystem, control subsystem, antenna subsystem, OM subsystem, and power subsystem.

BTS3812E and BTS3812AProduct Description 1 Introduction to the BTS3812E

Issue 04 (2007-06-30) Huawei Technologies Proprietary 1-1

1.1 Overview of the BTS3812EThe BTS3812E is an indoor macro NodeB. The BTS3812E is used in urban areas, businesscenters, and large-sized and medium-sized cities with very high potential for traffic growth.

The BTS3812E has the following benefits:

l Capacity: One BTS3812E supports up to 1024 and 1536 Channel Elements (CEs) in theuplink (UL) and the downlink (DL) respectively. One BTS3812E also supports up to 12cells and 6 sectors. Each sector supports up to 4 carriers.

l Coverage: It supports particular configurations such as sectors x carriers and sectors xtransmit power. The maximum search radius is 180 km. The 1-way receiver sensitivity ishigher than –125 dBm. The BTS3812E supports transmit diversity and can be connectedto the Remote Radio Unit (RRU).

l Multiband applications: It supports frequency bands 2100 MHz, 1900 MHz, 1800 MHz,900 MHz, and 850 MHz and supports cabinet sharing between any two bands to meetoperators' requirements in different regions.

l Flexible networking topology: It supports multiple topologies such as star, chain, tree, andring. It also supports satellite and microwave transmission.

l Transmission interfaces: The data on the Iub interface can be transmitted in the channelizedand non-channelized ATM transmission based on E1/T1 and STM-1/OC-3 and in the IPtransmission based on E1/T1 and FE. The BTS3812A supports the UNI link, IMA link,fractional ATM link, and hub NodeB.

l Clock and synchronization: The NodeB supports the clock extracted from the Iub interface,the Global Positioning System (GPS) clock, BITS clock, and internal clock.

l High Speed Downlink Packet Access (HSDPA): HSDPA and R99/R4 services aresupported by the same carrier. The downlink peak rate is up to 14.4 Mbit/s and the uplinkpeak rate is up to 384 kbit/s. Each cell supports 64 HSDPA users.

l High Speed Uplink Packet Access (HSUPA): HSUPA phase 1 is supported. The uplinkapplication layer peak rate is up to 1.44 Mbit/s (DL) and peak rate over the Uu interface is1.92 Mbit/s. Each cell supports 20 HSUPA users.

l Multimedia Broadcast and Multicast Service (MBMS): With this technology, the NodeBcan save resources on the Uu interface either by sending multimedia broadcast services tothe UEs in a cell over common channels or by sending multicast services subscribed by theUEs in the cell.

l Installation: With a modular design that supports cabling at the front of the cabinet, theNodeB cabinet is easy to install and maintain.

l OM platform: With the Local Maintenance Terminal (LMT) and the M2000, the NodeBsupports the local maintenance, remote maintenance, and inverse maintenance.

l Enhanced antenna system: The antenna system supports Antenna Interface StandardsGroup (AISG) protocols, Tower Mounted Amplifier (TMA) and Smart Tower MountedAmplifier (STMA), and Remote Electrical Tilt (RET).

l High-speed access of UEs: The NodeB allows UEs to enjoy services in a vehicle movingat the speed of up to 400 km/h.

l IP RAN: The IP transmission mode enables all-IP transmission on the Iub and Iur interface.Data services can be transmitted over low rate links. This helps you make use of the IPtransmission resources.

1 Introduction to the BTS3812EBTS3812E and BTS3812A

Product Description

1-2 Huawei Technologies Proprietary Issue 04 (2007-06-30)

1.2 System Architecture of the BTS3812EThe BTS3812E system consists of the BTS3812E cabinet, antenna system, and LMT computer.

Figure 1-1 shows the components of the BTS3812E system.

Figure 1-1 BTS3812E in full configuration

Components Description

BTS3812E cabinet For details about the hardware structure of the BTS3812E, refer toBTS3812E Cabinet.For details about the logical structure of the BTS3812E, refer to 1.4Logical Structure of the BTS3812E.

Antenna system The antenna system can be categorized into the RET antenna systemand the non-RET antenna system. It receives weak signals in theuplink and transmits signals in the downlink.For details about the antenna system, refer to 11 AntennaSubsystem of the NodeB.For details about the installation of the antenna devices, refer toNodeB Antenna System Installation Guide (Non-RET) andNodeB Antenna System Installation Guide (RET).

GPS antenna system The GPS antenna system provides GPS clock signals for the NodeB.For details about the installation of the GPS antenna devices, referto NodeB GPS Antenna System Installation Guide.

LMT The LMT computer is the computer that is installed with the LMTsoftware package and is connected to the OM network of the NEs.You may operate and maintain the NE through the LMT.For details, refer to NodeB LMT User Guide.



Components Description

Environmentmonitoring device

This is an optional device. The environment monitoring deviceconfigured for the BTS3812E is the Environment Monitoring Unit(EMU). For details about the EMU, refer to the EMU User Guide.


Structure of the NodeB Software

Figure 1-2 Software structure of the BTS3812E/BTS3812A

Platform SoftwareThe platform software serves as the support for the signaling protocol software, OM software,and data center. It runs on the boards in the baseband subrack. The boards can be an NMPT, anNDTI, an NAOI, a HULP, a HDLP, an NBBI, and an NMON. The platform software providesfollowing functions:

l Timing management

l Task management

l Memory management

l Module management

l Management of the loading and running of the application software

l Providing of a message transfer mechanism for communications between the modules andthe application software

l Tracing of inter-board messages for troubleshooting


Product Description


Data CenterThe data center stores the configuration data of each module in .xml format.

Signaling Protocol SoftwareThe signaling protocol software runs on all the boards of the NodeB except the MAFU andNMON. Signaling protocols comprise the radio network layer protocol and transport networklayer protocol.

l The radio network layer protocol has the following functions:– Signaling data configuration

– NBAP signaling processing

– RRC protocol processing over BCH

– Processing of the outer loop power control frame and radio parameter update frame inthe FP

– Mapping and management of NodeB internal physical resources and logical resources

l The transport network layer protocol has the following functions:– Transport data configuration

– ALCAP protocol processing

– SAAL protocol processing

OM SoftwareThe OM software runs on every board of the NodeB. It works with the LMT and M2000 forNodeB maintenance.

l Equipment Management

l Data configuration

l Performance management

l Commissioning management

l Alarm Management

l Software Management

l Tracing management

l Right Management

l Backup management

l Log management

1.4 Logical Structure of the BTS3812EThe BTS3812E is composed of the modules of the transport subsystem, baseband subsystem,RF subsystem, control subsystem, antenna subsystem, OM subsystem, and power subsystem.

Logical structure of the BTS3812EFigure 1-3 shows the logical structure of the BTS3812E.



Figure 1-3 Logical structure of the BTS3812E

Transport subsystem RF subsystem RX channel

Duplexer Control subsystem TX channel

TMA Baseband subsystem PA

RNC Power subsystem

For details about the subsystems of the BTS3812E, refer to the following:

l 4 Transport Subsystem of the BTS3812E/BTS3812A

l 5 Baseband Subsystem of the BTS3812E/BTS3812A

l 6 RF Subsystem of the BTS3812E/BTS3812A

l 7 Control Subsystem of the BTS3812E/BTS3812A

l 11 Antenna Subsystem of the NodeB

l 15 OM Subsystem of the NodeB

l 12.3 Synchronization of the BTS3812E with the External Reference Clock

l 8 Power subsystem of the BTS3812E


Product Description


2 Introduction to the BTS3812A

About This Chapter

The BTS3812A that is developed by Huawei is an outdoor macro NodeB. It complies with theprotocols of 3GPP R99/R4/R5/R6 FDD.

2.1 Overview of the BTS3812AThe BTS3812E is an outdoor macro NodeB. The BTS3812E is used in urban areas, businesscenters, and large-sized and medium-sized cities with very high potential for traffic growth.

2.2 Introduction to the BTS3812AThe BTS3812A system consists of the BTS3812A cabinet, antenna system, and LMT computer.


2.4 Logical Structure of the BTS3812AThe BTS3812A is composed of the modules of the transport subsystem, baseband subsystem,RF subsystem, control subsystem, antenna subsystem, and OM subsystem, power subsystem,and environment monitoring subsystem.

BTS3812E and BTS3812AProduct Description 2 Introduction to the BTS3812A


2.1 Overview of the BTS3812AThe BTS3812E is an outdoor macro NodeB. The BTS3812E is used in urban areas, businesscenters, and large-sized and medium-sized cities with very high potential for traffic growth.

The BTS3812A has the following benefits:

l Capacity: One BTS3812A supports up to 1024 and 1536 Channel Elements (CEs) in theuplink (UL) and the downlink (DL) respectively. One BTS3812A also supports up to 12cells and 6 sectors. Each sector supports up to 4 carriers.

l Coverage: It supports particular configurations such as sectors x carriers and sectors xtransmit power. The maximum search radius is 180 km. The 1-way receiver sensitivity ishigher than –125 dBm. The BTS3812E supports transmit diversity and can be connectedto the Remote Radio Unit (RRU).

l Multiband applications: It supports frequency bands 2100 MHz, 1900 MHz, 1800 MHz,900 MHz, and 850 MHz and supports cabinet sharing between any two bands to meetoperators' requirements in different regions.

l Flexible networking topology: It supports multiple topologies such as star, chain, tree, andring. It also supports satellite and microwave transmission.

l Transmission interfaces: The data on the Iub interface can be transmitted in the channelizedand non-channelized ATM transmission based on E1/T1 and STM-1/OC-3 and in the IPtransmission based on E1/T1 and FE. The BTS3812A supports the UNI link, IMA link,fractional ATM link, and hub NodeB.

l Clock and synchronization: The NodeB supports the clock extracted from the Iub interface,the Global Positioning System (GPS) clock, BITS clock, and internal clock.

l High Speed Downlink Packet Access (HSDPA): HSDPA and R99/R4 services aresupported by the same carrier. The downlink peak rate is up to 14.4 Mbit/s and the uplinkpeak rate is up to 384 kbit/s. Each cell supports 64 HSDPA users.

l High Speed Uplink Packet Access (HSUPA): HSUPA phase 1 is supported. The uplinkapplication layer peak rate is up to 1.44 Mbit/s (DL) and peak rate over the Uu interface is1.92 Mbit/s. Each cell supports 20 HSUPA users.

l Multimedia Broadcast and Multicast Service (MBMS): With this technology, the NodeBcan save resources on the Uu interface either by sending multimedia broadcast services tothe UEs in a cell over common channels or by sending multicast services subscribed by theUEs in the cell.

l Installation: With a modular design that supports cabling at the front of the cabinet, theNodeB cabinet is easy to install and maintain.

l OM platform: With the Local Maintenance Terminal (LMT) and the M2000, the NodeBsupports the local maintenance, remote maintenance, and inverse maintenance.

l Enhanced antenna system: The antenna system supports Antenna Interface StandardsGroup (AISG) protocols, Tower Mounted Amplifier (TMA) and Smart Tower MountedAmplifier (STMA), and Remote Electrical Tilt (RET).

l High-speed access of UEs: The NodeB allows UEs to enjoy services in a vehicle movingat the speed of up to 400 km/h.

l IP RAN: The IP transmission mode enables all-IP transmission on the Iub and Iur interface.Data services can be transmitted over low rate links. This helps you make use of the IPtransmission resources.

2 Introduction to the BTS3812ABTS3812E and BTS3812A

Product Description


l The cabinet is designed in accordance with international standards and is configured withan environment monitoring and adjustment system. This enables the cabinet to be adaptedto various environment.

2.2 Introduction to the BTS3812AThe BTS3812A system consists of the BTS3812A cabinet, antenna system, and LMT computer.

Figure 2-1 shows the components of the BTS3812A system.

Figure 2-1 Components of the BTS3812A system

Component Description

BTS3812A cabinet For details about the hardware structure of the BTS3812A, refer toBTS3812A Cabinet.For details about the logical structure of the BTS3812A, refer to 2.4Logical Structure of the BTS3812A.

Antenna system The antenna system can be categorized into the RET antenna systemand the non-RET antenna system. It receives weak signals in theuplink and transmits signals in the downlink.For details about the antenna system, refer to 11 AntennaSubsystem of the NodeB.For details about the installation of the antenna devices, refer toNodeB Antenna System Installation Guide (Non-RET) andNodeB Antenna System Installation Guide (RET).

GPS antenna system The GPS antenna system provides GPS clock signals for the NodeB.For details about the installation of the GPS antenna devices, referto NodeB GPS Antenna System Installation Guide.



Component Description

LMT The LMT computer is the computer that is installed with the LMTsoftware package and is connected to the OM network of the NEs.You may operate and maintain the NE through the LMT.For details, refer to NodeB LMT User Guide.

Battery cabinet The batter cabinet is optional. The user guide is delivered with thebattery cabinet.

Environmentmonitoring device

The environment monitoring device is optional. The user guide isdelivered with the device.


Structure of the NodeB Software

Figure 2-2 Software structure of the BTS3812E/BTS3812A

Platform Software

The platform software serves as the support for the signaling protocol software, OM software,and data center. It runs on the boards in the baseband subrack. The boards can be an NMPT, anNDTI, an NAOI, a HULP, a HDLP, an NBBI, and an NMON. The platform software providesfollowing functions:

l Timing management

l Task management


Product Description


l Memory management

l Module management

l Management of the loading and running of the application software

l Providing of a message transfer mechanism for communications between the modules andthe application software

l Tracing of inter-board messages for troubleshooting

Data Center

The data center stores the configuration data of each module in .xml format.

Signaling Protocol Software

The signaling protocol software runs on all the boards of the NodeB except the MAFU andNMON. Signaling protocols comprise the radio network layer protocol and transport networklayer protocol.

l The radio network layer protocol has the following functions:– Signaling data configuration

– NBAP signaling processing

– RRC protocol processing over BCH

– Processing of the outer loop power control frame and radio parameter update frame inthe FP

– Mapping and management of NodeB internal physical resources and logical resources

l The transport network layer protocol has the following functions:– Transport data configuration

– ALCAP protocol processing

– SAAL protocol processing

OM Software

The OM software runs on every board of the NodeB. It works with the LMT and M2000 forNodeB maintenance.

l Equipment Management

l Data configuration

l Performance management

l Commissioning management

l Alarm Management

l Software Management

l Tracing management

l Right Management

l Backup management

l Log management



2.4 Logical Structure of the BTS3812AThe BTS3812A is composed of the modules of the transport subsystem, baseband subsystem,RF subsystem, control subsystem, antenna subsystem, and OM subsystem, power subsystem,and environment monitoring subsystem.

Logical structure of the BTS3812AFigure 2-3 shows the logical structure of the BTS3812A.

Figure 2-3 Logical structure of the BTS3812A

Transport subsystem RF subsystem RX channel

Control subsystem Baseband subsystem TX channel

Power subsystem Environment monitoring subsystem PA

TMA Duplexer AC power input

RNC GPS

For details about the subsystems of the BTS3812A, refer to:

l 4 Transport Subsystem of the BTS3812E/BTS3812A

l 5 Baseband Subsystem of the BTS3812E/BTS3812A

l 6 RF Subsystem of the BTS3812E/BTS3812A

l 7 Control Subsystem of the BTS3812E/BTS3812A

l 11 Antenna Subsystem of the NodeB

l 15 OM Subsystem of the NodeB

l 9 Power Subsystem of the BTS3812A


Product Description


l 10 Environment Monitoring Subsystem of the BTS3812A

l 12.3 Synchronization of the BTS3812E with the External Reference Clock



3 Configuration Types of the BTS3812E/BTS3812A

A single BTS3812E/BTS3812A can support up to 12 cells. The configuration type is flexibleand multiple and the maximum configuration is 6 x 2 or 3 x 4.

Configurations of the BTS3812ETable 3-1 lists the configurations of a single BTS3812E.

Table 3-1 Configurations of the BTS3812E

Configuration Transmit diversity

1×1 Optional

3×1 Optional

3×2 Optional

3×3 –

3×4 –

6×1 –

6×2 –

NOTE

N x M = sector x carrier, for example, 3 x 1 indicates 3 sectors x 1 carrier.

The BTS3812E has the following configuration features:

l The NodeB supports the configuration of 1 to 6 sectors. Each sector supports up to fourcarriers. It can be connected to RRUs.

l A single NodeB can support up to 3 x 4 or 6 x 2 configuration in no transmit diversity mode.You may select one of the configurations, depending on the locations and the number ofUEs.

l The NodeB supports smooth capacity expansion from 1 x 1 to 6 x 2 or 3 x 4.

BTS3812E and BTS3812AProduct Description 3 Configuration Types of the BTS3812E/BTS3812A


l The capacity of the modular BTS3812E can be expanded simply through additionalmodules or license upgrade. In the initial phase of network deployment, you can use somesmall capacity configurations such as omni configuration and 3 x 1. With the increase inthe number of UEs, you can smoothly upgrade the system to large-capacity configurationssuch as 3 x 2 and 3 x 4.

Configurations of the BTS3812ATable 3-2 lists the configurations of a single BTS3812A.

Table 3-2 Configurations of the BTS3812A

Configuration Transmit diversity

1×1 Optional

3×1 Optional

3×2 Optional

3×3 –

3×4 –

6×1 –

6×2 –

NOTE

N x M = sector x carrier, for example, 3 x 1 indicates 3 sectors x 1 carrier.

The BTS3812A has the following configuration features:

l The NodeB supports the configuration of 1 to 6 sectors. Each sector supports up to fourcarriers. It can be connected to RRUs.

l A single NodeB can support up to 3 x 4 or 6 x 2 configuration in no transmit diversity mode.You may select one of the configurations, depending on the locations and the number ofUEs.

l The NodeB supports smooth capacity expansion from 1 x 1 to 6 x 2 or 3 x 4.

l The capacity of the modular BTS3812A can be expanded simply through additionalmodules or license upgrade. In the initial phase of network deployment, you can use somesmall capacity configurations such as omni configuration and 3 x 1. With the increase inthe number of UEs, you can smoothly upgrade the system to large-capacity configurationssuch as 3 x 2 and 3 x 4.

3 Configuration Types of the BTS3812E/BTS3812ABTS3812E and BTS3812A

Product Description


4 Transport Subsystem of the BTS3812E/BTS3812A

About This Chapter

The transport subsystem consists of the NDTI and the NUTI. It interfaces with the RNC formessage exchange between the NodeB and the RNC.

4.1 Components of the BTS3812E/BTS3812A Transport SubsystemThe transport subsystem consists of the NDTI and the NUTI.

4.2 Functions of the BTS3812E/BTS3812A Transport SubsystemThe transport subsystem provides the interface between the NodeB and the RNC. The transportsubsystem is connected to the baseband subsystem and control subsystem through internal buses.The transport subsystem performs NBAP preprocessing and transmits interactive informationbetween the NodeB and the RNC. The transport subsystem also provides multiple transmissionports and supports various networking topologies to meet different transmission requirements.

BTS3812E and BTS3812AProduct Description 4 Transport Subsystem of the BTS3812E/BTS3812A


4.1 Components of the BTS3812E/BTS3812A TransportSubsystem

The transport subsystem consists of the NDTI and the NUTI.

The number of the slot that hosts the NUTIs and NDTIs can be 12, 13, 14, or 15, as shown inFigure 4-1.

Figure 4-1 Iub interface boards in the baseband subrack

The BTS3812E/BTS3812A can configure up to four Iub interface boards. Slots 12 and 13 in thebaseband subrack support both the NUTI and NDTI. Slots 14 and 15 support only the NUTImounted with a subrack for cabling from the front.

4.2 Functions of the BTS3812E/BTS3812A TransportSubsystem

The transport subsystem provides the interface between the NodeB and the RNC. The transportsubsystem is connected to the baseband subsystem and control subsystem through internal buses.The transport subsystem performs NBAP preprocessing and transmits interactive informationbetween the NodeB and the RNC. The transport subsystem also provides multiple transmissionports and supports various networking topologies to meet different transmission requirements.

The transport subsystem provides the following functions:

l Interfacing the NodeB with the RNC

l Interfacing with the baseband subsystem and control subsystem through internal ATMbuses, performing NBAP preprocessing, and transmitting interactive information betweenthe NodeB and the RNC

Iub interface boards provide multiple transmission ports and networking topologies to meet theactual transport network and interface requirements of network operators.

4 Transport Subsystem of the BTS3812E/BTS3812ABTS3812E and BTS3812A

Product Description


5 Baseband Subsystem of the BTS3812E/BTS3812A

About This Chapter

The baseband subsystem, processing baseband signals, consists of the HULP, HDLP, and HBOI/HBBI.

5.1 Components of the BTS3812E/BTS3812A Baseband SubsystemThe baseband subsystem consists of the HULP, HDLP, and HBOI/HBBI.

5.2 Functions of the BTS3812E/BTS3812A Baseband SubsystemThe baseband subsystem provides the functions of downlink processing, uplink processing, andclosed loop processing.

BTS3812E and BTS3812AProduct Description 5 Baseband Subsystem of the BTS3812E/BTS3812A


5.1 Components of the BTS3812E/BTS3812A BasebandSubsystem

The baseband subsystem consists of the HULP, HDLP, and HBOI/HBBI.

Figure 5-1 shows the position of the HULP, HDLP, and HBBI/HBOI in the baseband subrack.

Figure 5-1 Position of the HULP, HDLP, and HBBI/HBOI in the baseband subrack

NOTE

The HBOI has the same function as that of the HBBI. The HBOI is used only when the RRU is connected.

The baseband boards are described as follows:

l The uplink signal processing parts of the HULP and HBBI form the resource pool to processthe uplink baseband signals.

l The downlink signal processing parts of the HDLP and HBBI form the resource pool toprocess the downlink baseband signals.

l If the NodeB supports more than six cells, the uplink baseband signal processing resourcepool is split into several resource groups. Each resource group may deal with data in sixcells at most. Each cell belongs to one uplink resource group at a time. The cells in thesame resource group share their uplink resources. The softer handover can be achievedbetween the cells.

5.2 Functions of the BTS3812E/BTS3812A BasebandSubsystem

The baseband subsystem provides the functions of downlink processing, uplink processing, andclosed loop processing.

l Downlink processingThe baseband subsystem receives FP packets from the transport subsystem. After channelcoding and downlink modulation, it transmits the data to the HBBI or HBOI. The HBBI

5 Baseband Subsystem of the BTS3812E/BTS3812ABTS3812E and BTS3812A

Product Description


then allocates the DL data to the MTRU, or the HBOI then allocates the DL data to theRRU.

l Uplink processingThe HBBI receives the UL baseband data from the MTRU or the HBOI receives the ULbaseband data from the RRU. After demodulation and decoding, it sends the data in theformat of FP packets to the transport subsystem.

l Closed loop processing:The baseband subsystem implements the physical layer closed loop processing foracquisition indications (AIs), the uplink and downlink power control, and the DL closedloop transmit diversity processing. The processing retrieves related control information,such as AI, uplink transmit power control (TPC), downlink TPC and feedback information(FBI), from the received UL data and then sends the control information to DL transmitchannels.

BTS3812E and BTS3812AProduct Description 5 Baseband Subsystem of the BTS3812E/BTS3812A


6 RF Subsystem of the BTS3812E/BTS3812A

About This Chapter

The RF subsystem consists of MAFUs and MTRUs and processes the RF signals.

6.1 Components of the BTS3812E/BTS3812A RF SubsystemThe RF subsystem consists of MTRUs and MAFUs. The MTRU subrack contains MTRUs andthe MAFU subrack contains MAFUs. A pair of MTRU and MAFU processes bi-carrier signalsover one transmit channel and two receive channels.

6.2 Functions of the BTS3812E/BTS3812A RF SubsystemThe boards of the RF subsystem form the receive channel and transmit channel to process theuplink RF signals and downlink RF signals.

BTS3812E and BTS3812AProduct Description 6 RF Subsystem of the BTS3812E/BTS3812A


6.1 Components of the BTS3812E/BTS3812A RF SubsystemThe RF subsystem consists of MTRUs and MAFUs. The MTRU subrack contains MTRUs andthe MAFU subrack contains MAFUs. A pair of MTRU and MAFU processes bi-carrier signalsover one transmit channel and two receive channels.

Figure 6-1 shows the components of the RF subsystem.

Figure 6-1 Components of the RF subsystem

For details about the MTRU, refer to MTRU Module.

For details about the MAFU, refer to MAFU Module.

6.2 Functions of the BTS3812E/BTS3812A RF SubsystemThe boards of the RF subsystem form the receive channel and transmit channel to process theuplink RF signals and downlink RF signals.

Figure 6-2 shows the functions of the RF subsystem.

6 RF Subsystem of the BTS3812E/BTS3812ABTS3812E and BTS3812A

Product Description


Figure 6-2 Logical structure of the RF subsystem

Operating Principles of TX Channel

The RX channel functions as follows:

1. The MTRUs receive the downlink data distributed by the HBBI.

2. The MTRU converts the data into small RF signals at WCDMA transmit band throughpulse-shaping filtering, DUC, DAC, intermediate analog signal amplification, and up-conversion.

3. The HPA amplifies the small signals.

4. The MTRU sends RF signals to the MAFU.

5. The MAFU duplexer filters the signals, and then the MAFU sends the signals to the antennathrough the feeder.

6. The antenna transmits the signals.

Operating Principles of RX Channel

In two-way receive diversity mode, two ports of the antenna system receive UL signals fromUEs simultaneously. One port is used to receive and transmit signals while the other is used toreceive signals only.

The RX channel functions as follows:

1. Antennas of the two-port antenna system receive weak signals from UEs and send them tothe MAFU through feeders.

2. In MAFUs, the duplexers filter the signals from the receiving-and-transmitting port andthe low noise amplifiers (LNAs) amplify the signals. Then the UL signals are sent to theMTRU.

3. In MAFUs, the filters process the signals from the receiving-only port and the LNAsamplify the signals. Then the UL signals are sent to the MTRU.

BTS3812E and BTS3812AProduct Description 6 RF Subsystem of the BTS3812E/BTS3812A


4. The MTRUs process the signals and send them to the HBBIs after amplification, down-conversion, ADC, DDC, matched filtering, and DAGC.

NOTE

l If you configure a TMA, it can bypass the DL transmit signals to the antenna. Also, the TMA amplifiesthe UL signals and sends them to the MAFUs through the feeder.

l As shown in Figure 6-2, the common TX/RX port is named ANT A, and the RX port is named ANTB.

l For the single cabinet, two HBBIs are connected to all MTRUs and work in mutual backup mode.For the two combined cabinets, one HBBI is connected to the MTRUs in the primary cabinet, andthe other HBBI is connected to the MTRUs in the secondary cabinet. The two HBBIs workindependently.

l Two RX channels can be configured with RX diversity function.

6 RF Subsystem of the BTS3812E/BTS3812ABTS3812E and BTS3812A

Product Description


7 Control Subsystem of the BTS3812E/BTS3812A

About This Chapter

The control subsystem consists of the NMPT and the NMON. The control subsystem controlsand manages the entire NodeB system.

7.1 Components of the BTS3812E/BTS3812A Control SubsystemThe control subsystem consists of the NMPT and NMON. The NMON is optional.

7.2 Functions of the BTS3812E/BTS3812A Control SubsystemThe control subsystem consists of the NMPT and NMON. The control subsystem controls andmanages the entire NodeB system.

BTS3812E and BTS3812AProduct Description 7 Control Subsystem of the BTS3812E/BTS3812A


7.1 Components of the BTS3812E/BTS3812A ControlSubsystem

The control subsystem consists of the NMPT and NMON. The NMON is optional.

Positions of the NMPT and NMON in the baseband subrack is shown in Figure 7-1.

Figure 7-1 Positions of the NMPT and NMON in the baseband subrack

7.2 Functions of the BTS3812E/BTS3812A ControlSubsystem

The control subsystem consists of the NMPT and NMON. The control subsystem controls andmanages the entire NodeB system.

The functions of the control subsystem are as follows:

l Managing the configuration

l Managing resource

l Providing various reference clocks for the entire NodeB

l Processing signaling over the Iub interface: processing NBAP signaling, processingALCAP signaling, and processing SCTP signaling, and managing logic resource

l Operating and maintaining: managing the device, configuration, alarms, software, andcommissioning

l Monitoring the working state of the NodeB

l Providing the input and output control interface for the NodeB

7 Control Subsystem of the BTS3812E/BTS3812ABTS3812E and BTS3812A

Product Description


8 Power subsystem of the BTS3812E

About This Chapter

The power subsystem of the BTS3812E is composed of the power subrack at the cabinet bottomand the power distribution subsystem inside the cabinet. The BTS3812E uses –48 V DC, +24V DC, or 220 V AC power supply.

8.1 Components of the BTS3812A Power SubsystemThe power subsystem of the BTS3812E consists of the power subrack at the cabinet bottom,power input terminal at the cabinet top, and the power distribution subsystem inside the cabinet.The power supply subsystem differs according to the type of the input power.

8.2 Power distribution of the BTS3812EAccording to the input power, the BTS3812E power distribution is classified into the –48 V DCpower distribution, +24 V DC power distribution, and 220 V AC power distribution.

BTS3812E and BTS3812AProduct Description 8 Power subsystem of the BTS3812E


8.1 Components of the BTS3812A Power SubsystemThe power subsystem of the BTS3812E consists of the power subrack at the cabinet bottom,power input terminal at the cabinet top, and the power distribution subsystem inside the cabinet.The power supply subsystem differs according to the type of the input power.

Figure 8-1 shows the components of the BTS3812E power subsystem.

Figure 8-1 Components of the BTS3812E power subsystem

l When the BTS3812E uses the 220 V AC input power, the power subrack needs configurea converter that changes the 220 V AC power supply into the –48 V DC power supply.

l When the BTS3812E uses the +24 V DC input power, the power subrack needs configurea converter that changes the +24 V DC power supply into the –48 V DC power supply.

l When the BTS3812E uses the –48 V DC input power, the power subrack is not configured.

8.2 Power distribution of the BTS3812EAccording to the input power, the BTS3812E power distribution is classified into the –48 V DCpower distribution, +24 V DC power distribution, and 220 V AC power distribution.

The power supply enters the BTS3812E at the cabinet top. When the BTS3812E uses the 220V AC input power or +24 V DC input power, the input power is converted into the –48 V DCpower supply in the power subrack before being sent to the busbar. When the BTS3812E usesthe –48 V DC input power, the input power is directly sent to the busbar. The devices inside thecabinet get power from the busbar. Figure 8-2 shows the power distribution of the BTS3812E.

8 Power subsystem of the BTS3812EBTS3812E and BTS3812A

Product Description


Figure 8-2 Power distribution of the BTS3812E

BTS3812E and BTS3812AProduct Description 8 Power subsystem of the BTS3812E


9 Power Subsystem of the BTS3812A

About This Chapter

The BTS3812A power subsystem is composed of the surge protection filter subrack, powersubrack, AC power distribution subrack, batteries, busbar, and load.

9.1 Components of the BTS3812A Power SubsystemThe BTS3812A power subsystem is composed of the surge protection filter subrack, powersubrack, AC power distribution subrack, batteries, and busbar.

9.2 Power Distribution of the BTS3812AThe AC power input of the BTS3812A is processed with surge protection, EMI filtering, ACpower distribution, rectifying, and DC power distribution before the power is supplied to theinternal components of the cabinet.

BTS3812E and BTS3812AProduct Description 9 Power Subsystem of the BTS3812A


9.1 Components of the BTS3812A Power SubsystemThe BTS3812A power subsystem is composed of the surge protection filter subrack, powersubrack, AC power distribution subrack, batteries, and busbar.

Figure 9-1 shows the components of the BTS3812A power subsystem.

Figure 9-1 Components of the BTS3812A power subsystem

For details about the components of the BTS3812A power subsystem, refer to 2.2 Introductionto the BTS3812A.

9.2 Power Distribution of the BTS3812AThe AC power input of the BTS3812A is processed with surge protection, EMI filtering, ACpower distribution, rectifying, and DC power distribution before the power is supplied to theinternal components of the cabinet.

Block diagram of the BTS3812A power distribution

Figure 9-2 shows the power distribution of the BTS3812A. As shown in the block diagram, theBTS3812A power distribution subsystem are categorized into the AC distribution part and DCdistribution part.

l The BTS3812A AC power input is processed with surge protection and EMI filtering beforeit is sent to the AC power distribution unit.

l From the AC distribution unit, the power is supplied to PSUs and the heat exchanger.

l After the AC power is rectified by PSUs, the –48 V DC power is output. Then the DCpower is distributed to the internal components of the cabinet through the busbar.

l In order to minimize the impact from power failure, batteries are configured to theBTS3812A for power backup.

9 Power Subsystem of the BTS3812ABTS3812E and BTS3812A

Product Description


Figure 9-2 Power Distribution of the BTS3812A

AC Power Distribution

The BTS3812A supports both the single-phase and 3-phase AC power inputs.

The 3-phase AC power passes through the surge protector and the EMI filter before it is led tothe AC distribution unit. From the AC distribution unit, the power is distributed to the heatexchanger, PSUs, and reserved power sockets. MCBs are applied to protecting the circuits.Figure 9-2 shows the AC power distribution. The AC power goes through the AC distributionunit and reaches PSUs on three paths as follows:

l PSU 1, PSU 4, and PSU 5 on one path;

l PSU 2 and PSU 6 on another path;

l PSU 3 and PSU 7 on the third path.

MCBs, surge protectors, and EMI filters are all installed in the surge protection and filter subrack.PSUs are installed in the power subrack.

When the single-phase AC power input is applied, you should use copper bars to connect thethree phase wires L1, L2, and L3 on the AC surge protector. Power distribution inside theBTS3812A cabinet is the same as that of the 3-phase AC power input.

DC Power Distribution

PSUs convert AC power and provides –48 V DC power to the busbar. The DC power is suppliedto the following units through the 12 power switches on the busbar:

l MTRU 0 through MTRU 5

l MAFU

l Baseband subrack

l NFAN Subrack

l Lamp

l Transmission devices

l Fans in the heat exchanger

BTS3812E and BTS3812AProduct Description 9 Power Subsystem of the BTS3812A


10 Environment Monitoring Subsystem ofthe BTS3812A

About This Chapter

The unmanned BTS3812A is distributed in a vast area. Therefore, it must be effectivelymonitored to ensure stable operation. The BTS3812A environment monitoring subsystemprovides customized solutions regarding door control, infrared, smoke, water immersion,humidity, and temperature monitoring.

10.1 Components of the Environment Monitoring Subsystem of the BTS3812AThe BTS3812A environment monitoring subsystem consists of the NMPT, PMU, NPMI, andsensors.

10.2 Functions of the BTS3812A Environment Monitoring SubsystemThe BTS3812A is used for outdoor application and provides comprehensive environmentmonitoring functions. Sensors, PMU, and NMPT are applied to monitoring the environment.The heat exchanger and fans are applied to controlling the temperature inside the cabinet.

BTS3812E and BTS3812AProduct Description 10 Environment Monitoring Subsystem of the BTS3812A


10.1 Components of the Environment MonitoringSubsystem of the BTS3812A

The BTS3812A environment monitoring subsystem consists of the NMPT, PMU, NPMI, andsensors.

Figure 10-1 shows the components of the environment monitoring subsystem.

Figure 10-1 Components of the environment monitoring subsystem

10.2 Functions of the BTS3812A Environment MonitoringSubsystem

The BTS3812A is used for outdoor application and provides comprehensive environmentmonitoring functions. Sensors, PMU, and NMPT are applied to monitoring the environment.The heat exchanger and fans are applied to controlling the temperature inside the cabinet.

The functions of the BTS3812A environment monitoring subsystem are as follows:

l Collecting environment information about temperature, humidity, and smoke

l Monitoring the heat exchanger and fans

l Reporting environment information and related alarms

10 Environment Monitoring Subsystem of the BTS3812ABTS3812E and BTS3812A

Product Description


l Heating and cooling the cabinet

BTS3812E and BTS3812AProduct Description 10 Environment Monitoring Subsystem of the BTS3812A


11 Antenna Subsystem of the NodeB

About This Chapter

The NodeB antenna subsystem transmits the RF signals between the antenna ports of the NodeBcabinet and the antenna. The antenna subsystem also transmits signals to and receives signalsfrom the UE. The antenna system is classified into the non-RET antenna subsystem and RETantenna subsystem.

11.1 Typical 3G Antenna System (Non-RET)The single 3G antenna system has its own antennas and does not share the antennas or feederswith the 2G system.

11.2 Typical Antenna System Shared Between 2G and 3G Systems (Non-RET)The non-RET antenna system shared between 2G and 3G systems use the same antennas orfeeders. The typical applications of the non-RET antenna system can be shared antenna +independent feeders, shared antenna + shared feeder, and independent antennas + shared feeder.

11.3 Typical 3G Antenna System (RET)3G single system antenna means the 3G system has an independent antenna system, and thisantenna system does not share the antenna or feeders with the 2G system.

11.4 Typical Antenna System Shared Between 2G and 3G Systems (RET)The antenna system shared between the 2G system and the 3G system (RET) means the 2Gsystem and the 3G system share the antenna or feeder. The two typical scenarios for the sharedantenna system are shared RET antenna + independent feeders and independent RET antenna +shared feeders.

BTS3812E and BTS3812AProduct Description 11 Antenna Subsystem of the NodeB


11.1 Typical 3G Antenna System (Non-RET)The single 3G antenna system has its own antennas and does not share the antennas or feederswith the 2G system.

The single 3G antenna system has the following two applications:l The single polarization antenna without the TMA is installed on the pole on the rooftop,

as shown in Figure 11-1.l The single polarization antenna with the TMA is installed on the tower platform, as shown

in Figure 11-2.

11 Antenna Subsystem of the NodeBBTS3812E and BTS3812A

Product Description


Figure 11-1 Single polarization antenna (without TMA) on the pole on the rooftop

(1) Directional antenna (2) Pole (3) Outdoor jumper

(4) Outdoor cable rack (5) Feeder clip (6) Feeder grounding kit

(7) Outdoor grounding bar (8) To outdoor lightning protection ground (9) Feeder window



(10) Cable tie (11) Outdoor jumper (12) Indoor cable rack

(13) Feeder


Product Description


Figure 11-2 Single polarization antenna (with TMA) on the tower platform

(1) Lightning rod (2) Pole (3) TMA

(4) Directional antenna (5) Waterproof curve (6) Feeder grounding clip

(7) Feeder (8) Outdoor cable rack (9) Feeder window



(10) Outdoor grounding bar (11) Tower grounding conductor (12) Cable tie

(13) Guard rail

11.2 Typical Antenna System Shared Between 2G and 3GSystems (Non-RET)

The non-RET antenna system shared between 2G and 3G systems use the same antennas orfeeders. The typical applications of the non-RET antenna system can be shared antenna +independent feeders, shared antenna + shared feeder, and independent antennas + shared feeder.

11.3 Typical 3G Antenna System (RET)3G single system antenna means the 3G system has an independent antenna system, and thisantenna system does not share the antenna or feeders with the 2G system.

11.4 Typical Antenna System Shared Between 2G and 3GSystems (RET)

The antenna system shared between the 2G system and the 3G system (RET) means the 2Gsystem and the 3G system share the antenna or feeder. The two typical scenarios for the sharedantenna system are shared RET antenna + independent feeders and independent RET antenna +shared feeders.


Product Description


12 Clock Synchronization Modes of theBTS3812E/BTS3812A

About This Chapter

The BTS3812E/BTS3812A supports multiple clock synchronization modes. The clock moduleinside the NMPT achieves clock synchronization of the BTS3812E/BTS3812A. The moduleprovides timing signals for the entire NodeB.

12.1 Synchronization of the BTS3812E/BTS3812A with Iub ClockSynchronization with Iub interface clock signals ensures that the NodeB clock precision is higherthan 0.05 ppm. It satisfies the clock precision requirements for the long-term stable operationof NodeB.

12.2 Synchronization of the BTS3812E/BTS3812A with GPS ClockThe BTS3812E/BTS3812A supports synchronization with the GPS Clock. When the NodeBtakes the GPS clock as its clock source, the NMPT must be configured with a GPS card. Witha frequency stability of 0.0001 ppm, the GPS card provides long-term stable clock signals forthe NodeB.

12.3 Synchronization of the BTS3812E with the External Reference ClockThe BTS3812E supports synchronization with the 2 MHz clock signals from an externalreference clock whose precision should be higher than 0.05 ppm.

12.4 Free-Run Internal Clock of the BTS3812E/BTS3812AThe BTS3812E/BTS3812A supports the internal clock source that can keep the BTS3812E/BTS3812A operational for at least 90 days in the case of loss of an external clock.

BTS3812E and BTS3812AProduct Description



12.1 Synchronization of the BTS3812E/BTS3812A with IubClock

Synchronization with Iub interface clock signals ensures that the NodeB clock precision is higherthan 0.05 ppm. It satisfies the clock precision requirements for the long-term stable operationof NodeB.

Figure 12-1 shows the synchronization with Iub interface clock signals.

Figure 12-1 Synchronization with Iub interface clock signals

The procedure for synchronization with GPS clock signals is as follows:

1. The NodeB extracts the 8-kHz clock signals from the Iub transmission line.

2. An Iub interface board transmits the clock signals to the clock module in the NMPT.

3. The clock module in the NMPT converts the clock signals to various clock signals such asframe clock (F_CLK), clock at 4x chip rate (CLK_4X), and NodeB Frame Number (BFN)required by the NodeB through phase locking and frequency dividing.

4. The NMPT transmits clock signals to boards such as the HDLP, HULP, HBBI, and NMON.The HBBI transfers the clock signals to the MTRU.

12.2 Synchronization of the BTS3812E/BTS3812A with GPSClock

The BTS3812E/BTS3812A supports synchronization with the GPS Clock. When the NodeBtakes the GPS clock as its clock source, the NMPT must be configured with a GPS card. Witha frequency stability of 0.0001 ppm, the GPS card provides long-term stable clock signals forthe NodeB.

Figure 12-2 shows the synchronization with GPS clock signals.




Figure 12-2 Synchronization with GPS clock signals

The procedure for synchronization with GPS clock signals is as follows:

1. The GPS antenna system receives GPS signals at 1575.42 MHz and then transmits thesignals to the GPS card in the NMPT. It traces up to 8 (generally 3 to 4) satellitessimultaneously.

2. The GPS card processes the signals and transmits them to the clock module in the NMPT.

3. The clock module in the NMPT converts the clock signals to various clock signals such asframe clock (F_CLK), clock at 4x chip rate (CLK_4X), and NodeB Frame Number (BFN)required by the NodeB through phase locking and frequency dividing.

4. The NMPT transmits the clock signals to boards such as the HDLP, HULP, HBBI, andNMON. The HBBI transfers the clock signals to the MTRU.

12.3 Synchronization of the BTS3812E with the ExternalReference Clock

The BTS3812E supports synchronization with the 2 MHz clock signals from an externalreference clock whose precision should be higher than 0.05 ppm.

Figure 12-3 shows the synchronization with external reference clock signals.

Figure 12-3 Synchronization with external reference clock signals

The procedure for synchronization with external reference clock signals is as follows:




1. The clock module in the NMPT receives external reference clock signals.2. The clock module in the NMPT converts the clock signals to various clock signals such as

frame clock (F_CLK), clock at 4x chip rate (CLK_4X), and NodeB Frame Number (BFN)required by the NodeB through phase locking and frequency dividing.

3. The NMPT transmits clock signals to boards such as the HDLP, HULP, HBBI, and NMON.The HBBI transfers clock signals to the MTRU.

12.4 Free-Run Internal Clock of the BTS3812E/BTS3812AThe BTS3812E/BTS3812A supports the internal clock source that can keep the BTS3812E/BTS3812A operational for at least 90 days in the case of loss of an external clock.

The clock module that provides the internal clock source for the NodeB is built in the NMPT.With enhanced Oven Controlled Crystal Oscillator (OCXO) and advanced algorithm and phase-locking technology, the internal clock source meets the level-3 clock standard. The precision ofthe internal clock is higher than 0.05 ppm.

Figure 12-4 shows the processing and distribution of the internal clock signals.

Figure 12-4 Processing and distribution of the internal clock signals




13 Signal Flow of the BTS3812E/BTS3812A

About This Chapter

Signal flow of the BTS3812E and BTS3812A is of signal flow of downlink services, signal flowof uplink services, and signal flow of signaling processing.

13.1 Signal Flow of Downlink Services of the BTS3812E/BTS3812AThe signal flow of downlink services refers to the user plane data sent from the RNC to the UEthrough the BTS3812E/BTS3812A. The NUTI/NDTI, HDLP, HBBI, MTRU, and MAFU worktogether to process the signals of the downlink services carried on the BTS3812E/BTS3812A.Based on whether the HDLP is configured, the signal flow of the downlink services falls intothe following categories:

13.2 Signal Flow of Uplink Services of the BTS3812E/BTS3812AThe signal flow of uplink services is the user plane data from the UE through the BTS3812E/BTS3812A to the RNC. The MAFU, MTRU, HBBI, HULP, NUTI/NDTI work together toprocess the signals of the uplink services carried on the BTS3812E/BTS3812A. Based onwhether the HULP is configured, the signal flow of the uplink services falls into the followingcategories:

13.3 Signal Flow of Signaling Processing of the BTS3812E/BTS3812AThe signaling of the BTS3812E/BTS3812A is the signaling over the Iub interface. Workingtogether with other boards, the NMPT controls the signaling processing.

BTS3812E and BTS3812AProduct Description 13 Signal Flow of the BTS3812E/BTS3812A


13.1 Signal Flow of Downlink Services of the BTS3812E/BTS3812A

The signal flow of downlink services refers to the user plane data sent from the RNC to the UEthrough the BTS3812E/BTS3812A. The NUTI/NDTI, HDLP, HBBI, MTRU, and MAFU worktogether to process the signals of the downlink services carried on the BTS3812E/BTS3812A.Based on whether the HDLP is configured, the signal flow of the downlink services falls intothe following categories:

Signal flow of downlink services when the HDLP is not configuredThe HBBI rather than the HDLP should be configured when the downlink traffic is low. Figure13-1 shows the signal flow of downlink services in this situation.

Figure 13-1 Signal flow of downlink services when the HDLP is not configured

Signal flow of downlink services when the HDLP is configuredThe HDLP must be configured when the downlink traffic is high. Figure 13-2 shows the signalflow of downlink services in this situation.

13 Signal Flow of the BTS3812E/BTS3812ABTS3812E and BTS3812A

Product Description


Figure 13-2 Signal flow of downlink services when the HDLP is configured

Description of Signal Flow of Downlink ServicesNo matter the HDLP is configured or not, the procedure for signal flow of downlink services isas follows:

1. The NodeB Iub interface board receives signals from the RNC, performs AAL2 switching,and then transmits the service signals to the HDLP and the downlink baseband processingpart of the HBBI.

2. The HDLP and the downlink baseband processing part of HBBI perform the followingfunctions:l Frame Protocol (FP) processing, coding, mapping from transport channels to physical

channels, framing, spreading and modulation, and power control.l The HBBI collects the processed data and transmits it to the corresponding MTRU.

3. The MTRU:l performs digital RRC pulse-shaping filtering, insertion filtering, Digital Up Conversion

(DUC), and Digital-Analog Conversion (DAC). Then IF signals are generated.l RF signals are generated after up-conversion and are transmitted to the MAFU after

filtering and amplification.4. The MAFU: The duplexer in the MAFU filters the signals and sends them to antenna on

the NodeB through feeders.



13.2 Signal Flow of Uplink Services of the BTS3812E/BTS3812A

The signal flow of uplink services is the user plane data from the UE through the BTS3812E/BTS3812A to the RNC. The MAFU, MTRU, HBBI, HULP, NUTI/NDTI work together toprocess the signals of the uplink services carried on the BTS3812E/BTS3812A. Based onwhether the HULP is configured, the signal flow of the uplink services falls into the followingcategories:

Signal Flow of Uplink Services When the HULP is ConfiguredThe HBBI rather than the HULP should be configured when the uplink traffic is low. Figure13-3 shows the signal flow of uplink services in this situation.

Figure 13-3 Signal Flow of Uplink Services When the HULP is Configured

Signal Flow of Uplink Services When the HULP is ConfiguredBoth the HBBI and the HULP must be configured when the uplink traffic is high. Figure13-4 shows the signal flow of uplink services in this situation.


Product Description


Figure 13-4 Signal Flow of Uplink Services When the HULP is Configured

Description of Signal Flow of Uplink ServicesNo matter the HULP is configured or not, the procedure for the signal flow of uplink servicesis as follows:

1. The antenna receives signals from UEs. The signals amplified by the TMA are transmittedto the MAFU. Note that the TMA can be optionally used to compensate for feeder loss andto enhance the NodeB receive sensitivity.

2. The MAFU: The MAFU processes UL signals of two channels simultaneously.l The signals of one channel are processed over the common TX/RX channel and are sent

to the MTRU after being filtered by the duplexer and amplified by the LNA.l The signals of the other channel are processed over the dedicated RX channel and are

sent to the MTRU after being filtered by the duplexer and amplified by the LNA.3. The MTRU: The MTRU simultaneously processes UL signals of two channels in the same

way as follows:

(1) The MTRU amplifies and down converts the signals to produce IF signals.(2) Through the Analog-Digital Conversion (ADC), the IF signals are converted into

digital signals.(3) After the Digital Down Conversion (DDC), extraction filtering, RRC filtering, and

Digital Automatic Gain Control (DAGC) processing, digital baseband signals areproduced and signal multiplexing is completed. Then the multiplexed signals aretransferred to the HBBI.

4. After the signals are led to HBBI, the UL signals are processed by the HBBI or transmittedto the corresponding HULP for baseband processing. The procedure for digital basebandprocessing is as follows:



(1) The HULP or the HBBI performs access channel demodulation and dedicated channeldemodulation, including multi-path searching, channel estimation, frequencytracking, and rake combination to obtain despread and demodulated soft decisionsymbols.

(2) After convolutional or Turbo decoding, FP scrambling and SAR-to-AAL2 adaptation,the HULP sends the symbols to the Iub interface board through the ATM bus.

5. The Iub interface board: The Iub interface board performs AAL2 switching on the uplinkservice data and transmits the switched data to the RNC through the Iub interface.

13.3 Signal Flow of Signaling Processing of the BTS3812E/BTS3812A

The signaling of the BTS3812E/BTS3812A is the signaling over the Iub interface. Workingtogether with other boards, the NMPT controls the signaling processing.

Figure 13-5 shows the signal flow of signaling processing.

Figure 13-5 Signal flow of signaling processing of the NodeB

The signal flow of the signaling processing is as follows:

1. The Iub interface boards receive data from the RNC and forward the data to the NMPT.

2. The NMPT performs decision and processing on the signaling and distributes signalingprocessing commands to other boards.

l The NMPT transmits the signaling to HDLPs, HULPs, Iub interface boards, and HBBIs.

l The HBBIs transmit the signaling to the MTRU and MAFU.

3. The boards report the processing result to the NMPT.

l The HDLPs, HULPs, Iub interface boards, and HBBIs directly report the board state tothe NMPT.

l The MTRU and MAFU report the board state to the NMPT through HBBIs.

4. The NMPT obtains the NodeB status and reports the status information to the RNC.


Product Description


14 Topologies of the BTS3812E/BTS3812A

About This Chapter

Topology of the BTS3812E/BTS3812A refers to the transmission topology over the Iubinterface, that is, the topology of the transmission channels between the NodeB and the RNC.The BTS3812E/BTS3812A supports multiple topologies, such as star, chain, tree, cascadingRRUs, hub NodeB, and co-transmission with 2G equipment, to meet the requirements ofdifferent scenarios.

14.1 Star TopologyAs the most commonly used topology, star topology applies to most areas, especially to denselypopulated areas.

14.2 Chain TopologyChain topology applies to the belt-shaped and loosely populated areas, such as highways andrailways.

14.3 Tree TopologyTree topology applies to complicated networks and sites such as large area with concentratedhot spots.

14.4 Topology of the NodeB Cascaded with RRUsThe topology of the BTS3812E/BTS3812A cascaded with RRUs can achieve flexible coveragein such locations as indoor places, underground places, highways, and railways.

14.5 2G/3G Concurrent TransmissionThe NodeB supports the fractional ATM and CES, which enables 2G/3G concurrenttransmission and reduces investment on transmission resources.

14.6 Topology of the Hub NodeBThe NodeB supports the topology with the hub NodeB. The hub NodeB converges thetransmission bandwidth of the lower-level NodeBs.

BTS3812E and BTS3812AProduct Description 14 Topologies of the BTS3812E/BTS3812A


14.1 Star TopologyAs the most commonly used topology, star topology applies to most areas, especially to denselypopulated areas.

Figure 14-1 shows the topology.

Figure 14-1 Star topology

Advantages of star topology:

l The NodeB is directly connected to the RNC. Therefore, star topology features simplicity,convenience in maintenance, engineering, and capacity expansion.

l Direct data transmission is built between the NodeB and RNC and signals travel fewernodes, which gives higher transmission reliability.

Disadvantages of star topology: Compared with the other networking modes, star topologyrequires more transmission resources.

14.2 Chain TopologyChain topology applies to the belt-shaped and loosely populated areas, such as highways andrailways.

14 Topologies of the BTS3812E/BTS3812ABTS3812E and BTS3812A

Product Description



Figure 14-2 Chain topology

Advantages: Chain topology can reduce costs in transmission equipment, engineering,construction, and transmission link lease.

Disadvantages:

l Signals travel through many nodes, so the transmission reliability is low.

l Faults in the upper-level NodeB may affect the operation of the lower-level NodeB(s).

l Each chain may have a maximum of five levels.

14.3 Tree TopologyTree topology applies to complicated networks and sites such as large area with concentratedhot spots.


Figure 14-3 Tree topology

Advantages of tree topology: Tree topology requires fewer transmission links than star topology.

Disadvantages:



l Signals travel through many nodes, which causes low transmission reliability andconstruction and maintenance difficulties.

l Faults in the upper-level NodeB may affect the operation of the lower-level NodeB(s).

l Capacity expansion is difficult because it may involve major modification to the networkarchitecture.

l Each tree topology may have a maximum number of five levels.

14.4 Topology of the NodeB Cascaded with RRUsThe topology of the BTS3812E/BTS3812A cascaded with RRUs can achieve flexible coveragein such locations as indoor places, underground places, highways, and railways.


Figure 14-4 Topology of the BTS3812E/BTS3812A cascaded with RRUs

Advantages : This topology can reduce costs in initial construction and expand the networkcoverage. The RRUs feature convenience in network planning and centralized management bythe upper-level NodeB.

Disadvantages: Faults in the upper-level NodeB may affect normal operations of RRUs.

14.5 2G/3G Concurrent TransmissionThe NodeB supports the fractional ATM and CES, which enables 2G/3G concurrenttransmission and reduces investment on transmission resources.


Product Description


Fractional ATM

In the fractional ATM mode, some of the 32 timeslots in an E1/T1 link are used for ATM celltransmission. That is, the ATM cells are mapped to some of the 30 timeslots (timeslots 0 and 16already reserved) at the TX end and then recovered from those timeslots at the RX end.

The scenarios of 2G/3G co-transmission in fractional ATM mode are as follows:

l The operators have GSM mobile networks. It is possible to use current transmissionnetwork resources to build 3G networks.

l The RNC and NodeB support the fractional ATM.

l The function of timeslot cross connection is provided by the BSC and BTS or externaltimeslot cross devices.

Figure 14-5 shows the 2G/3G co-transmission in Fractional ATM mode.

Figure 14-5 2G/3G co-transmission in fractional ATM mode

Advantages: 2G/3G co-transmission helps operators speed up WCDMA construction andoffering services. It saves the transmission resources and reduces expenses in the initial phaseof WCDMA construction.

Disadvantages: The 3G equipment is dependent on the 2G equipment, whose upgrade affectsthe stability of 3G services.

CES

The Circuit Emulation Service (CES) uses the technology that emulates the TDM circuit in theATM network. The CES enables the narrowband signals to be transmitted in the widebandsystem. In CES mode, 2G systems may use the 3G ATM transmission devices to transmit 2Gservices.

The scenarios of 2G/3G co-transmission in CES ATM mode are as follows:

l When the transmission resources of the 2G network are insufficient, 2G systems can usethe ATM transmission devices to transmit services through CES mode.

l The RNC and NodeB must support the CES.

Figure 14-6 shows the 2G/3G co-transmission in CES mode.



Figure 14-6 2G/3G co-transmission in CES mode

Advantages of CES mode:

l 2G/3G co-transmission in CES mode reduces costs of transmission and networkmaintenance.

l No timeslot cross device is required on the NodeB side, which reduces the costs andenhances system reliability.

l The transmission over the ATM network enhances the usage of the transmission resourcesand ensures the performance of the CS real time services as well as the sequence of thetimeslot data.

Disadvantages of CES mode:

l CES mode applies to mature 3G networks with enough bandwidth on the Iub interfacebecause it occupies more bandwidth on the interface.

l The CES port resource is limited on the RNC side.

l The 2G equipment is dependent on the 3G equipment, whose performance affects thestability of the 2G services.

l The encapsulation and decapsulation during the circuit emulation introduces delay anddelay variation, which affect the QoS of the 2G services.

14.6 Topology of the Hub NodeBThe NodeB supports the topology with the hub NodeB. The hub NodeB converges thetransmission bandwidth of the lower-level NodeBs.

The hub NodeB integrates the functions of transmission device. Thus the hub NodeB canconverge the transmission data of the lower-level NodeBs. Figure 14-7 shows the networktopology of hub NodeBs.


Product Description


Figure 14-7 Network topology of the hub NodeB

Advantage: The hub NodeB converges the transmission data of the lower-level NodeBs. Thusthe transmission resources are more effectively used.

Disadvantage: Faults in the hub NodeB may affect the running of the lower-level NodeBs.



15 OM Subsystem of the NodeB

About This Chapter

The NodeB OM subsystem manages, monitors, and maintains the software, hardware, andconfiguration of the NodeB. The NodeB OM subsystem provides various OM modes andmultiple maintenance platforms to meet different maintenance requirements.

15.1 Components of the NodeB OM SubsystemThe OM subsystem consists of the LMT , M2000, RAN configuration system, OM channel, andNetwork Element (NE).

15.2 Functions of the NodeB OM SubsystemThe OM subsystem provides the functions of the commissioning management, equipmentmanagement, software management, and alarm management.

BTS3812E and BTS3812AProduct Description 15 OM Subsystem of the NodeB


15.1 Components of the NodeB OM SubsystemThe OM subsystem consists of the LMT , M2000, RAN configuration system, OM channel, andNetwork Element (NE).

As shown in Figure 15-1, the OM subsystem has the following components:

Figure 15-1 NodeB OM subsystem

The NodeB OM subsystem consists of the following:

l LMT: maintains a single NodeB.

l M2000: maintains multiple NodeBs.

l RAN configuration system: provides data configuration for Huawei RNC and NodeB.

l OM channel: provides channels between the NodeB and the LMT and between the NodeBand the M2000.

l NE: the object of maintenance.

The OM Subsystem provides the following three modes of maintenance:

l Local maintenance: The NodeB is maintained on the LMT through the local Ethernet portof the NodeB.

l Remote maintenance: The NodeB is maintained through the IP route provided by the RNC.The maintenance is performed on the M2000 client or the LMT in an NMS center or anRNC equipment room.

l Reverse maintenance: Another NodeB is maintained on the LMT through the local Ethernetport of a local NodeB and the IP route provided by the RNC.

NOTE

After hardware installation, the NodeB is loaded with only the software, not the data configuration file. Inthis situation, a maintenance channel with parameters negotiated between the NodeB and the RNC in theATM transport network can be automatically set up. This function enables maintenance personnel todownload the data configuration file to the NodeB at the far end.

15 OM Subsystem of the NodeBBTS3812E and BTS3812A

Product Description


15.2 Functions of the NodeB OM SubsystemThe OM subsystem provides the functions of the commissioning management, equipmentmanagement, software management, and alarm management.

Commissioning managementCommisioning management provides the following functions:

l Equipment performance test: CPU occupancy, clock source quality, and power

l Routine testing: E1/T1 performance and the STM-1 performance

l Service performance test: RF performance test, UL channel scanning, and service resourceoccupancy statistics

Equipment ManagementThe equipment management consists of the equipment maintenance and data configuration.

l Maintaining the equipment: board reset, equipment status management, equipment self-testing, active/standby switchover and time correction

l Configuring the equipment: configuring, querying and backing up equipment parameters,such as the NodeB hardware, clock, algorithm, and RF parameter configuration

Software ManagementSoftware management includes the following functions:

l Activating the software

l Checking the compatibility of software and hardware versions

l Querying hardware and software versions

l Upgrading the software version

Alarm ManagementAlarm management consists of equipment alarm management and environment alarmmanagement.

l The alarm management of the BTS3812E can detect and report equipment faults in realtime. The LMT or the M2000 can display alarm information and provide alarm handlingsuggestions.The alarm management system of the M2000 connects to an alarm box through a serialport and supports both audible and visible alarms. The alarms can be subscribed by theclient and forwarded to the handsets or pagers of the maintenance personnel so that thepersonnel can handle the faults in time.

l Environment alarm managementTypically, the equipment rooms are unmanned and distributed over a vast area. Theequipment in such a room works in a relatively adverse environment, and may incur fires,water immersion, or flood. To help you handle such emergencies, the NodeB provides acomplete environment alarm monitoring system.

BTS3812E and BTS3812AProduct Description 15 OM Subsystem of the NodeB


Alarm management includes the following functions:

l Alarm testing

l Alarm reporting

l Alarm shielding

l Alarm affirming

l Alarm pre-processing

l Alarm correlation processing

l Alarm help information processing

Right ManagementThe operation rights for maintainers are divided into multiple levels when both the BTS3812Esand the M2000 are applied. This ensures that the running equipment is free from misoperation.

Environment MonitoringTypically, the equipment rooms are unmanned and distributed over a vast area. The equipmentin such a room works in a relatively adverse environment, and may incur fires, water immersion,or flood. To help you handle such emergencies, the NodeB provides a complete environmentmonitoring system.

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

15 OM Subsystem of the NodeBBTS3812E and BTS3812A

Product Description


16 Technical Specifications for theBTS3812E/BTS3812A

About This Chapter

The technical specifications for the BTS3812E/BTS3812A cover items of the capacity, RF,engineering, surge protection, ports, environment, and compliant standards.

16.1 Capacity Specifications for the BTS3812E/BTS3812AThe capacity specifications for the BTS3812E/BTS3812A covers the uplink capacity, downlinkcapacity, and HSDPA capacity.

16.2 RF Specifications for the BTS3812E/BTS3812AThe RF specifications for the BTS3812E/BTS3812A cover the working frequency band,transmitter, and receiver.

16.3 Engineering Specifications for the BTS3812EThe engineering specifications for the BTS3812E cover the physical dimensions, weight of theBTS3812E, power supply, power consumption of the BTS3812E, and reliability.

16.4 Engineering Specifications for the BTS3812AThe engineering specifications for the BTS3812A cover the physical dimensions, weight of theBTS3812A, power supply, power consumption of the BTS3812A, and reliability.

16.5 Surge Protection Specifications for Ports on the BTS3812E/BTS3812AThe BTS3812E/BTS3812A provides surge protection for its ports. The surge protectionspecifications for ports cover the items such as power supply, E1, antenna connector, dry contact,and RET.

16.6 Ports on the BTS3812EThe ports of the BTS3812E consist of transmission ports, cascading ports connecting to 2Gequipment, external alarm ports, and other external ports.

16.7 Ports on the BTS3812AThe ports of the BTS3812A consist of transmission ports, cascading ports connecting to 2Gequipment, external alarm ports, and other external ports.

16.8 Environmental Conditions of the BTS3812EThe environmental conditions of the BTS3812E cover the items of working environment,transportation, and storage.

BTS3812E and BTS3812AProduct Description 16 Technical Specifications for the BTS3812E/BTS3812A


16.9 Environmental Conditions of the BTS3812AThe environmental conditions of the BTS3812A cover the items of working environment,transportation, and storage.

16.10 Compliant Standards of the BTS3812EThe BTS3812E complies with the standards of EMC, acoustic noise, working environment,transportation, storage, anti-seismic performance, and Iub interface protocol.

16.11 Compliant Standards of the BTS3812AThe BTS3812A complies with the standards of EMC, acoustic noise, working environment,transportation, storage, and anti-seismic performance and complies with the Iub interfaceprotocol.

16 Technical Specifications for the BTS3812E/BTS3812ABTS3812E and BTS3812A

Product Description


16.1 Capacity Specifications for the BTS3812E/BTS3812AThe capacity specifications for the BTS3812E/BTS3812A covers the uplink capacity, downlinkcapacity, and HSDPA capacity.

NOTEThe maximal number of channel elements (common control channel and channels occupied by softhandover) can be set, depending on the number of UEs and the types of services.

Table 16-1 Capacity of the baseband under 3 x 4 configuration

Capacity Type Quantity of CEs

Uplink capacity 1024

Downlink capacity 1536

HSDPA capacity 12 cells (15 HSDPA codes per cell)

16.2 RF Specifications for the BTS3812E/BTS3812AThe RF specifications for the BTS3812E/BTS3812A cover the working frequency band,transmitter, and receiver.

Working Frequency

Table 16-2 lists the working frequency bands of the BTS3812E/BTS3812A. The bandwidth ofa single carrier is 5 MHz.

Table 16-2 Working frequency

Frequency Band Receiving Band Transmitting Band

Band I (2100 MHz) 1920 MHz to 1980 MHz 2110 MHz to 2170 MHz

Band II (1900 MHz) 1850 MHz to 1910 MHz 1930 MHz to 1990 MHz

Band III/IV (1800MHz)

1710 MHz to 1785 MHz 1805 MHz to 1880 MHz

Band V/IV (850MHz)

824 MHz to 849 MHz 869 MHz to 894 MHz

Band VIII (900 MHz) 880 MHz to 915 MHz 925 MHz to 960 MHz

Transmitter Specifications

The transmit power of the BTS3812E/BTS3812A:

l When the MTRU transmits 2-carrier signals, the transmit power of the NodeB is 20 W percarrier.



l When the MTRU transmits 1-carrier signals, the transmit power of the NodeB is 40 W percarrier.

Receiver Specificationsl Receiver Sensitivity

The receiver sensitivity of the BTS3812E/BTS3812A is shown in Table 16-3 and Table16-4.

Table 16-3 Receiver sensitivity (Band I: 2100 MHz)

Receive DiversityMode

Receiver SensitivityNote 1 Receiver SensitivityNote 2

1-way -125.5 dBm -126.2 dBm

2-way -128.3 dBm -129.0 dBm

Table 16-4 Receiver sensitivity (Band II: 1900 MHz; band III: 1800 MHz; band V: 850MHz; band VIII: 900 MHz)

Receive DiversityMode

Receiver SensitivityNote 1 Receiver SensitivityNote 2

1-way -125.3 dBm -126.0 dBm

2-way -128.1 dBm -128.8 dBm

NOTE

l Note 1: The test is based on the method stipulated in 3GPP TS 25.104. The receiver sensitivityis measured at the antenna connector at the top of the cabinet with the channel rate of 12.2 kbit/s and the bit error rate not bigger than 0.0001.

l Note 2: The receiver sensitivity is measured at the antenna connector at the top of the cabinetwith the 12.2 kbit/s AMR service, bit error not bigger than 0.001, and middle frequency.

l Maximum access search radiusThe maximum access search radius is 180 km. The radius is configurable with the step sizeof 300 m.

16.3 Engineering Specifications for the BTS3812EThe engineering specifications for the BTS3812E cover the physical dimensions, weight of theBTS3812E, power supply, power consumption of the BTS3812E, and reliability.

Physical Dimensions

Table 16-5 Physical dimensions of the BTS3812E

Item Width (mm) Depth (mm) Height (mm)

Cabinet 600 600 1400


Product Description



Cabinet with the powersupply box on top of thecabinet

600 600 1500

Base 600 600 60

Total 600 600 1560

NOTE

l The base is mandatory.

l Adjust the base if the mounting surface is uneven.

l The range for adjusting the base is 0 mm to 4 mm.

l The maximum height of the cabinet is 1,564 mm.

Equipment Weight

Table 16-6 Equipment Weight

Configuration Equipment Weight (kg)

3 x 1 160

3 x 2 162

Full configuration 205

NOTEThe weight of the BTS3812E is measured without the built-in power module.

Power supply

Table 16-7 Parameters of the power supply

Input Power Rated Value Allowed range

–48 V DC –48 V DC –40 V DC to –60 V DC

+24 V DC +24 V DC +21.6 V DC to +29.4 V DC

220 V AC 220 V AC 176 V AC to 290 V AC/50 Hz to 60Hz

NOTE

Using the +24 V DC power, -48 V DC power, and 220 V AC power, the BTS3812E complies with therelated specifications stipulated in ETS 300 132-2.



Power Consumption

Table 16-8 lists the maximum and typical power consumptions of the BTS3812E in no transmitdiversity mode.

Table 16-8 Power consumptions

Configuration (NoTransmit Diversity)

Typical PowerConsumption (W)

Maximum PowerConsumption (W)

1×1 270 370

3×1 590 760

3×2 750 940

3×3 1570 1820

3×4 1680 1960

6×1 1450 1670

6×2 1680 1960

NOTE

l N x M = sector x carrier, for example, 3 x 1 indicates that each of the three sectors has one carrier.

l The typical value is the power consumption of the cabinet with transmit power of 20 W at the cabinettop per carrier and load of 50%.

l The maximum value is the power consumption of the cabinet with transmit power of 20 W at thecabinet top per carrier and load of 100%.

l The earlier mentioned power consumptions correspond to the 50 W PA.

Reliability

Table 16-9 Reliability of the BTS3812E

MTTR (Mean TimeTo Repair)

MTBF (Mean TimeBetween Failure)

Availability Downtime

1 hours 127,000 hours 99.9992% 4.13 minutes/year

NOTE

The redundancy of baseband boards refers to 1+1 backup of NMPTs, N+1 load sharing of HULPs, 1+1resource pool of HDLPs, 1+1 backup of HBBIs, and load sharing of NUTIs.

16.4 Engineering Specifications for the BTS3812AThe engineering specifications for the BTS3812A cover the physical dimensions, weight of theBTS3812A, power supply, power consumption of the BTS3812A, and reliability.


Product Description


Physical Dimensions

Table 16-10 Physical dimensions of the BTS3812A


Cabinet 900 920 1700

Base 893 807 200

Equipment Weight

Table 16-11 Equipment Weight

Configuration Equipment Weight (kg)

Empty cabinet without the front door 210

Empty cabinet with the front door 300

Empty cabinet with the front doorEmpty cabinet with the front door and four50 Ah batteries

410

Cabinet in full configuration and with thefront doorCabinet with four 50 Ah batteries and all theboards

510

Power supply

Table 16-12 Parameters of the power supply

Rated Voltage (VAC)

Input VoltageRange (V AC)

RatedFrequency(Hz)

Type

200 to 240 176 to 280 45 to 65 Single-phase

346/200 to 415/240 305/176 to 484/280 45 to 65 3-phase

200/100 to 240/120 180/90 to 270/135 45 to 65 Single-phase (dual livewires)

208/120 to 220/127 176/105 to 260/150 45 to 65 3-phase (dual livewires)

NOTE

Take 346/200 V AC as an example, where 346 indicates the line voltage, and 200 indicates the phasevoltage. You may deduce the meanings of the similar expressions by referring to this example.



Power ConsumptionTable 16-13 lists the maximum and typical power consumptions of the BTS3812A in no transmitdiversity mode when the heat exchanger and batteries do not work.

Table 16-13 Power consumptions

+Configuration (No TXDiversity)

Typical PowerConsumption (W)

Maximum PowerConsumption (W)

1×1 570 740

3×1 950 1200

3×2 1100 1340

3×3 1900 2300

3×4 2000 2450

6×1 1800 2200

6×2 2000 2450

NOTE

l The previously-mentioned power consumptions do not include the charge power of the built-in andexternal batteries, the power of the AC heat exchanger, or the 120 W transmission power.

l The power of the AC heat exchanger is 1,500 W.

l If the ambient temperature is lower than –10℃, the maximum power consumption of the NodeBincludes that of the AC heat exchanger and the batteries (if configured).

l The value of the typical power consumption is the power consumption of the cabinet with transmitpower of 20 W per carrier and load of 50%. The value of the maximum power consumption is thepower consumption of the cabinet with transmit power of 20 W per carrier and load of 100%.

l The earlier mentioned power consumptions correspond to the 50 W PA.

Reliability

Table 16-14 Reliability of the BTS3812A

MTTR(Mean Time ToRepair)

MTBF(Mean Time BetweenFailure)

Availability Downtime

1 hours 90,400 hours 99.999% 5.81 minutes/year

16.5 Surge Protection Specifications for Ports on theBTS3812E/BTS3812A

The BTS3812E/BTS3812A provides surge protection for its ports. The surge protectionspecifications for ports cover the items such as power supply, E1, antenna connector, dry contact,and RET.


Product Description


NOTE

l The surge protection specifications are based on the surge waveform of 8/20 µs.

l All the items of discharge current, unless otherwise specified as the maximum discharge current,refer to the nominal discharge current.

Table 16-15 Surge protection specifications for the BTS3812E/BTS3812A

Item Specifications Remarks

DC power 3 kA in differential mode and 5 kA incommon mode

It refers to the BTS3812Eonly.

– It refers to the BTS3812Aonly.

AC power 60 kA in differential mode and commonmode (maximum discharge current)

-

E1 3 kA in differential mode and 5 kA incommon mode

-

Antenna system 8 kA in differential mode and 20 kA incommon mode

-

Dry contact 250 A in differential mode and commonmode

It refers to the BTS3812Eonly.

3 kA in differential mode and 5 kA incommon mode

It refers to the BTS3812Aonly.

RET 3 kA in differential mode and 5 kA incommon mode

-

16.6 Ports on the BTS3812EThe ports of the BTS3812E consist of transmission ports, cascading ports connecting to 2Gequipment, external alarm ports, and other external ports.

Transmission Ports

Table 16-16 Transmission ports of the BTS3812E

Port Type Quantity Data Rate Standard

T1 32 pairs 1.5 Mbit/s ANSI-G.703/G.704

E1 32 pairs 2 Mbit/s ETS 300,420ITU G.703/G.704

OC-3 8 155 Mbit/s ANSI T1.105

FE 8 100 Mbit/s IEEE802.3




UnchannelizedSTM-1

8 155 Mbit/s ANSI T1.105-1995ITU I.432.2 G.703ITU G.957

ChannelizedSTM-1

4 155 Mbit/s ANSI T1.105

Cascading Ports Connecting to the 2G Equipment

Table 16-17 Cascading ports connecting to the 2G equipment

Port Type Quantity

E1 4 pairs

T1 4 pairs

External Alarm PortsThe BTS3812E supports 32 external alarm inputs and 7 output controls. It can monitor otherexternal devices at the site. You may define the number of alarm inputs and output controls.

The external devices are electrically isolated from the NodeB. The alarms on the external devicesare set in an open or closed circuit. Table 16-18 lists the specifications for the external alarmports.

Table 16-18 Specifications for the external alarm ports

Input or Output Port Specification

External alarm input Closed resistance Closed < 0.2 kilohms

Open resistance Open > 51 kilohms

Output control Max. voltage 110 V DC or 125 V AC

Max. current 1 A

Other External Ports

Table 16-19 Other external ports of the BTS3812E

Port Type Quantity

Function

Clock GPS 2 GPS clock cable

External clock 1 For example, the BITSprovides a high precision clockat 2.048 MHz.


Product Description


Port Type Quantity

Function

Power supply andgrounding

Power supply 1 -

Protection ground 1 -

Power ground 1 -

Monitoring External alarm input 32 -

External outputcontrol

7 -

Environmentmonitoring andcommunication

1 Provides the interface to theEMI.

Antenna RF signals 12 Corresponds to three or sixsectors.

16.7 Ports on the BTS3812AThe ports of the BTS3812A consist of transmission ports, cascading ports connecting to 2Gequipment, external alarm ports, and other external ports.

Transmission Ports

Table 16-20 Transmission ports of the BTS3812A


T1 32 pairs 1.5 Mbit/s ANSI-G.703/G.704

E1 32 pairs 2 Mbit/s ETS 300,420ITU G.703/G.704

OC-3 8 155 Mbit/s ANSI T1.105

FE 8 100 Mbit/s IEEE802.3

UnchannelizedSTM-1

8 155 Mbit/s ANSI T1.105-1995ITU I.432.2 G.703ITU G.957

ChannelizedSTM-1

4 155 Mbit/s ANSI T1.105



Cascading Ports Connecting to the 2G Equipment

Table 16-21 Cascading ports connecting to the 2G equipment

Port Type Quantity

E1 4 pairs

T1 4 pairs

External Alarm PortsThe BTS3812A supports 32 external alarm inputs and 7 output controls. It can monitor the otherexternal devices at the site. You may define the number of alarm inputs and output controls.

The external devices are electrically isolated from the NodeB. The alarms on the external devicesare set in an open or closed circuit. Table 16-22 lists the specifications for the external alarmports.

Table 16-22 Specifications for the external alarm ports

Input or Output Port Specification

External alarm input Closed resistance Closed < 0.2 kilohms

Open resistance Open > 51 kilohms

Output control Max. voltage 110 V DC or 125 V AC

Max. current 1 A

Other External Ports

Table 16-23 Other external ports of the BTS3812A

Port Type Quantity Function

Clock GPS 2 GPS clock cable

Power supplyand grounding

220 V AC power input 4 -

110 V AC power input 3 -

Protection ground 1 -

Monitoring External alarm input 32 -

External output control 7 -

Antenna RF signals 12 Corresponds to three or sixsectors.


Product Description


16.8 Environmental Conditions of the BTS3812EThe environmental conditions of the BTS3812E cover the items of working environment,transportation, and storage.

16.8.1 Working Environment Requirements of the BTS3812EThis part describes the working environment requirements for the BTS3812E.

16.8.2 Transportation Requirements of the BTS3812EThis part describes the transportation requirements of the BTS3812E.

16.8.3 Storage Requirements of the BTS3812EThis part describes the storage environment requirements for the BTS3812E.

16.8.1 Working Environment Requirements of the BTS3812EThis part describes the working environment requirements for the BTS3812E.

Climatic RequirementsThe working environment of the NodeB should meet the climatic requirements in Table16-24.

Table 16-24 Climatic requirements

Item Specification

Altitude ≤ 4,000m

Air pressure 62 kPa to 106 kPa

Temperature -5℃ to +45℃

Temperature change rate ≤ 3℃/min

Relative humidity 5% to 85%

Solar radiation ≤ 700 W/m2

Heat radiation ≤ 600 W/m2

Wind speed ≤ 1m/s

Biological Environment RequirementsThe operating environment of the NodeB should meet the following biological requirements:

l The environment is not conducive for the growth of fungus or mildew.

l There are no rodent animals such as rats.

Air Purity RequirementsThe working environment of the NodeB should meet the following air purity requirements:



l There is no explosive, conductive, magneto-conductive or corrosive dust in the air.

l The density of the physically active materials complies with the requirements in Table16-25.

Table 16-25 Requirements for physically active materials

Physically ActiveMaterial

Unit Density

Suspending dust mg/m3 ≤0.01

Falling dust mg/m2h ≤10

Sand mg/m3 There is no visible sand.

Note:l Diameter of suspended dust ≤ 75 μm

l 75 μm ≤ Diameter of falling dust ≤ 150 μm

l 150 μm ≤ Diameter of the sand ≤ 1000 μm

l The density of the chemically active materials complies with the requirements in Table16-26.

Table 16-26 Requirements for chemically active materials

Chemically ActiveMaterial

Unit Density

SO2 mg/m3 ≤1.50

H2S mg/m3 ≤0.03

NH3 mg/m3 ≤0.15

Cl2 mg/m3 ≤0.30

Mechanical Stress RequirementsTable 16-27 lists the mechanical stress that the equipment can endure during operation.

Table 16-27 Mechanical stress requirements

Item Subitem Specification

Sinusoidalvibration

Offset ≤ 3.5mm -

Accelerated speed - ≤ 10.0m/s2

Frequency range 2 Hz to 9 Hz 9 Hz to 200 Hz

Unsteady impact Impact responsespectrum II

≤ 100m/s2

Static payload ≤0


Product Description



Note:l Impact response spectrum means the maximum acceleration response curve generated by

the equipment under the specified impact excitation. Impact response spectrum II meansthat the duration of semi-sine impact response spectrum is 6ms.

l Static payload: The capability of the equipment in package to bear the pressure from thetop in normal pile-up method.

16.8.2 Transportation Requirements of the BTS3812EThis part describes the transportation requirements of the BTS3812E.

Climatic Requirements

The transportation environment of the NodeB should meet the climatic requirements listed inTable 16-28.


Item Specification

Altitude ≤ 5,000m







Wind speed ≤ 30m/s

Waterproof Requirements

The transportation environment of the NodeB should meet the following waterproofrequirements:

l The package is intact.

l Waterproof measures should be taken to prevent rainwater from entering the package.

l There is no water accumulated inside the transportation vehicle.

Biological Environment Requirements

The transportation environment of the NodeB should meet the following biologicalrequirements:





Air Purity RequirementsThe transportation environment of the NodeB should meet the following air purity requirements:





Unit Density

Suspending dust mg/m3 –

Falling dust mg/m2h ≤3.0

Sand mg/m3 ≤100







Unit Density

SO2 mg/m3 ≤0.30

H2S mg/m3 ≤0.10

NO2 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


Product Description


Mechanical Stress RequirementsThe transportation environment of the NodeB should meet the mechanical stress requirementsin Table 16-31.



Sinusoidalvibration

Offset ≤ 7.5mm - -

Acceleratedspeed

- ≤ 20.0m/s2 ≤ 40.0m/s2

Frequencyrange

2 Hz to 9 Hz 9 Hz to 200 Hz 200 Hz to 500 Hz

Randomvibration

Spectraldensity ofacceleratedspeed

10m2/s3 3m2/s3 1m2/s3

Frequencyrange


Unsteadyimpact

Impactresponsespectrum II

≤ 300m/s3

Static payload ≤ 10 kPa




16.8.3 Storage Requirements of the BTS3812EThis part describes the storage environment requirements for the BTS3812E.

Climatic RequirementsThe storage environment of the NodeB should meet the climatic requirements listed in Table16-32.


Item Specification

Altitude ≤ 5,000m




Item Specification







Waterproof RequirementsThe storage environment of the NodeB should be waterproof. The indoor storage environmentshould meet the following waterproof requirements:

l There is no water accumulated on the ground, and no water will drop on the package.

l The equipment is stored far from fire-fighting devices or heating facilities that are proneto water leakage.

If the equipment has to be placed outdoors, ensure that:


l Waterproof measures are taken to prevent rain from leaking into the package.

l There is no water accumulated on the ground and it is not allowed that water leaks into thepackage.

l The package is not exposed to direct sunlight.

Biological Environment RequirementsThe storage environment of the NodeB should meet the following biological requirements:



Air Purity RequirementsThe storage environment of the NodeB should meet the following air purity requirements:





Unit Density

Suspending dust mg/m3 ≤5.00


Product Description



Unit Density


Sand mg/m3 ≤300







Unit Density

SO2 mg/m3 ≤0.30

H2S mg/m3 ≤0.10

NO2 mg/m3 ≤0.50

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

Mechanical Stress Requirements

The storage environment of the NodeB should meet the mechanical stress requirements listedin Table 16-35.



Sinusoidalvibration

Offset ≤ 7.0mm -

Acceleratedspeed

- ≤ 20.0m/s2

Frequencyrange

2 Hz to 9 Hz 9 Hz to 200 Hz




Unsteadyimpact

Impact responsespectrum II

≤ 250m/s2





16.9 Environmental Conditions of the BTS3812AThe environmental conditions of the BTS3812A cover the items of working environment,transportation, and storage.

16.9.1 Working Environment Requirements of the BTS3812AThis part describes the working environment requirements for the BTS3812A.

16.9.2 Transportation Requirements of the BTS3812AThis part describes the transportation requirements of the BTS3812A.

16.9.3 Storage Requirements of the BTS3812AThis part describes the storage environment requirements for the BTS3812A.

16.9.1 Working Environment Requirements of the BTS3812AThis part describes the working environment requirements for the BTS3812A.


The working environment of the NodeB should meet the climatic requirements in Table16-36.


Item Specification

Temperature –40℃ to +45℃ (cabinet with heat exchanger and heater)

Temperature changerate

≤ 3℃/min


Altitude ≤ 3,000m




Product Description


Item Specification



NOTE

The temperature and humidity are measured 1.5 m above the ground and 0.4 m in front of the cabinet thathas no protection board in its front or at its back.

Biological Environment RequirementsThe operating environment of the NodeB should meet the following biological requirements:



Air Purity RequirementsThe working environment of the NodeB should meet the following air purity requirements:




Chemically Active Material Density (mg/m3)

SO2 ≤0.30

H2S ≤0.10

NH3 ≤1.00

Cl2 ≤0.10

HCl ≤0.10

HF ≤0.01

O3 ≤0.05

NOx ≤0.05

Mechanical Stress RequirementsTable 16-38 lists the mechanical stress that the equipment can endure during operation.





Sinusoidalvibration

Offset ≤ 3mm -

Acceleratedspeed

- ≤ 10.0m/s2

Frequencyrange

2 Hz to 9 Hz 9 Hz to 200 Hz

Unsteadyimpact


≤ 250m/s2

Static payload ≤0




16.9.2 Transportation Requirements of the BTS3812AThis part describes the transportation requirements of the BTS3812A.

Climatic RequirementsThe transportation environment of the NodeB should meet the climatic requirements listed inTable 16-39.


Item Specification



Relative humidity 5%～ 100%

Altitude ≤ 3,000m






Product Description


Waterproof RequirementsThe transportation environment of the NodeB should meet the following waterproofrequirements:


l Waterproof measures should be taken to prevent rainwater from entering the package.

l There is no water accumulated inside the transportation vehicle.

Biological Environment RequirementsThe transportation environment of the NodeB should meet the following biologicalrequirements:



Air Purity RequirementsThe transportation environment of the NodeB should meet the following air purity requirements:





Unit Density

Suspending dust mg/m3 ≤35


Sand mg/m3 ≤30







Unit Density

SO2 mg/m3 ≤0.30

H2S mg/m3 ≤0.10




Unit Density

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

Mechanical Stress RequirementsThe transportation environment of the NodeB should meet the mechanical stress requirementsin Table 16-42.



Sinusoidalvibration

Offset ≤ 3.5mm - -

Acceleratedspeed

- ≤ 10 m/s² ≤ 15m/s2

Frequencyrange


Randomvibration

Spectraldensity ofacceleratedspeed

30 m2/s3 3m2/s3 1m2/s3

Frequencyrange

2 Hz to 10 Hz 10 Hz to 200Hz

200 Hz to 500 Hz

Unsteadyimpact


≤ 250m/s2






Product Description


16.9.3 Storage Requirements of the BTS3812AThis part describes the storage environment requirements for the BTS3812A.


The storage environment of the NodeB should meet the climatic requirements listed in Table16-43.


Item Specification




Altitude ≤ 3,000m





Waterproof Requirements

The storage environment of the NodeB should be waterproof. The indoor storage environmentshould meet the following waterproof requirements:

l There is no water accumulated on the ground, and no water will drop on the package.

l The equipment is stored far from fire-fighting devices or heating facilities that are proneto water leakage.

If the equipment has to be placed outdoors, ensure that:


l Waterproof measures are taken to prevent rain from leaking into the package.

l There is no water accumulated on the ground and it is not allowed that water leaks into thepackage.

l The package is not exposed to direct sunlight.

Biological Environment Requirements

The storage environment of the NodeB should meet the following biological requirements:





Air Purity Requirements

The storage environment of the NodeB should meet the following air purity requirements:





Unit Density

Suspending dust mg/m3 ≤5

Falling dust mg/m2h ≤500

Sand mg/m3 ≤300






Chemically Active Material Unit Density

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

Mechanical Stress Requirements

The storage environment of the NodeB should meet the mechanical stress requirements listedin Table 16-46.


Product Description




Sinusoidalvibration

Offset ≤ 1.5mm -

Accelerated speed - ≤ 5m/s2

Frequency range 2 Hz to 9 Hz 9 Hz to 200 Hz

Unsteadyimpact

Impact response spectrumII

≤ 250m/s2





16.10 Compliant Standards of the BTS3812EThe BTS3812E complies with the standards of EMC, acoustic noise, working environment,transportation, storage, anti-seismic performance, and Iub interface protocol.

EMC

It complies with the following standards:

l R&TTE Directive 1999/5/EC

l R&TTE Directive 89/336/EEC

l 3GPP TS 25.113 V3.2.0 (2000-06)

l ETSI EN 301489-1/23

l ETSI EN 301908-1 V2.2.1 (2003-10)

l ITU-R SM.329-10

l The BTS3812E is CE certified.

Acoustic Noise

The Sound Power Level (SPL) of the acoustic noise generated by the BTS3812E is lower than64 dBA.

Working Environment

The working environment complies with the following standards:

ETSI EN300019-1-3 V2.2.2(2004-07) class 3.1 Temperature-controlled locations



Transportation


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

Storage


ETSI EN300019-1-1 V2.1.4 (2003-04) class1.2 Weatherprotected,not temperature-controlledstorage locations

Anti-Seismic Performance


l IEC 60068-2-57 (1999-11) Environmental testing - Part 2-57: Tests – Test Ff: Vibration -Time-history method

l YD5083-99: Interim Provisions for Test of Anti-seismic Performances ofTelecommunications Equipment (telecom industry standard in People's Republic of China)for Test of Anti-seismic Performances of Telecommunications Equipment.)

Iub Interface

The Iub interface complies with the following WCDMA standards (R5):

l Radio network layer– 25.430: UTRAN Iub interface: general aspects and principles

– 25.432: UTRAN Iub interface: signaling transport

– 25.433: UTRAN Iub interface NBAP Signalling

– 25.427: UTRAN Iub/Iur interface user plane protocol for DCH data streams

– 25.435: UTRAN Iub Interface User Plane Protocols for Common Transport ChannelData Streams

l Transport network layer (ATM)– 25.442: UTRAN implementation-specific O&M transport

– ITU-T Recommendation I.361 (11/95): "B-ISDN ATM layer specification"

– ITU-T Recommendation I.363.2 (11/2000): "B-ISDN ATM Adaptation layerspecification: Type 2 AAL".

– ITU-T Recommendation I.363.2 (8/1996): "B-ISDN ATM Adaptation Layer Type 5Specification"

– ITU-T Recommendation Q0.2100 (07/94): "B-ISDN signalling ATM adaptation layer(SAAL) overview description"

– ITU-T Recommendation Q.2130 (07/94): "B-ISDN signalling ATM adaptation layer –Service specific coordination function for support of signalling at the user networkinterface (SSCF–UNI)"

– ITU-T Recommendation Q.2110 (7/94): "B-ISDN ATM adaptation layer - ServiceSpecific Connection Oriented Protocol (SSCOP)"


Product Description


– ITU-T Recommendation Q.2630.2 (12/2000): "AAL Type 2 signalling protocol(Capability Set 2)".

– IETF RFC 2225 (4/1998): "Classical IP and ARP over ATM"

l Transport network layer (IP)– IETF RFC 791, (September 1981): "Internet Protocol"

– IETF RFC 768, (August 1980): "User Datagram Protocol"

– IETF RFC 1661, (July 1994): "The Point-to-Point Protocol (PPP)"

– IETF RFC 1662, (July 1994): "PPP in HDLC-like Framing"

– IETF RFC 2507, (February 1999): "IP header compression"

– IETF RFC 1990, (August 1996): "The PPP Multilink Protocol (MP)"

– IETF RFC 2686, (September 1999): "The Multi-Class Extension to Multi-Link PPP"

– IETF RFC 2509, (February 1999): "IP Header Compression over PPP"

– IETF RFC 3153, (August 2001): "PPP Multiplexing"

Uu InterfaceThe Uu interface complies with the following WCDMA standards (R5):

l 25.211: Physical channels and mapping of transport channels onto physical channels (FDD)

l 25.212: Multiplexing and channel coding (FDD)

l 25.213: Spreading and modulation (FDD)

l 25.214: Physical layer procedures (FDD)

l 25.321: MAC protocol specification

16.11 Compliant Standards of the BTS3812AThe BTS3812A complies with the standards of EMC, acoustic noise, working environment,transportation, storage, and anti-seismic performance and complies with the Iub interfaceprotocol.

EMCIt complies with the following standards:

l R&TTE Directive 1999/5/EC

l R&TTE Directive 89/336/EEC

l 3GPP TS 25.113 V3.2.0 (2000-06)

l ETSI EN 301,489-1/23

l ETSI EN 301 908-1 V2.2.1 (2003-10)

l ITU-R SM.329-10

Working EnvironmentIt complies with the following standards:

ETSI EN300019-1-4 V2.1.2 (2003-04) Class 4.1 Non-weatherprotected locations



Transportation


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

Storage


ETSI EN300019-1-1 V2.1.4 (2003-04) class1.2 Weatherprotected,not temperature-controlledstorage locations

Anti-Seismic Performance


l IEC 60068-2-57 (1999-11) Environmental testing - Part 2-57: Tests - Test Ff: Vibration -Time-history methodIEC 60068-2-57 (1999-11) Environmental testing -Part 2-57：Tests-Test Ff: Vibration - Time-history method

l YD5083-99: Interim Provisions for Test of Anti-seismic Performances ofTelecommunications Equipment (telecom industry standard in People's Republic of China)for Test of Anti-seismic Performances of Telecommunications Equipment.)

l NEBS GR63 zone4

Iub Interface

The Iub interface complies with the following WCDMA standards (R5):

l Radio network layer– 25.430: UTRAN Iub interface: general aspects and principles

– 25.432: UTRAN Iub interface: signaling transport

– 25.433: UTRAN Iub interface NBAP Signalling

– 25.427: UTRAN Iub/Iur interface user plane protocol for DCH data streams

– 25.435: UTRAN Iub Interface User Plane Protocols for Common Transport ChannelData Streams

l Transport network layer (ATM)– 25.442: UTRAN implementation-specific O&M transport

– ITU-T Recommendation I.361 (11/95): "B-ISDN ATM layer specification"

– ITU-T Recommendation I.363.2 (11/2000): "B-ISDN ATM Adaptation layerspecification: Type 2 AAL".

– ITU-T Recommendation I.363.2 (8/1996): "B-ISDN ATM Adaptation Layer Type 5Specification"

– ITU-T Recommendation Q0.2100 (07/94): "B-ISDN signalling ATM adaptation layer(SAAL) overview description"

– ITU-T Recommendation Q.2130 (07/94): "B-ISDN signalling ATM adaptation layer –Service specific coordination function for support of signalling at the user networkinterface (SSCF–UNI)"


Product Description


– ITU-T Recommendation Q.2110 (7/94): "B-ISDN ATM adaptation layer - ServiceSpecific Connection Oriented Protocol (SSCOP)"

– ITU-T Recommendation Q.2630.2 (12/2000): "AAL Type 2 signalling protocol(Capability Set 2)".

– IETF RFC 2225 (4/1998): "Classical IP and ARP over ATM"

l Transport network layer (IP)– IETF RFC 791, (September 1981): "Internet Protocol"

– IETF RFC 768, (August 1980): "User Datagram Protocol"

– IETF RFC 1661, (July 1994): "The Point-to-Point Protocol (PPP)"

– IETF RFC 1662, (July 1994): "PPP in HDLC-like Framing"

– IETF RFC 2507, (February 1999): "IP header compression"

– IETF RFC 1990, (August 1996): "The PPP Multilink Protocol (MP)"

– IETF RFC 2686, (September 1999): "The Multi-Class Extension to Multi-Link PPP"

– IETF RFC 2509, (February 1999): "IP Header Compression over PPP"

– IETF RFC 3153, (August 2001): "PPP Multiplexing"

Uu InterfaceThe Uu interface complies with the following WCDMA standards (R5):

l 25.211: Physical channels and mapping of transport channels onto physical channels (FDD)

l 25.212: Multiplexing and channel coding (FDD)

l 25.213: Spreading and modulation (FDD)

l 25.214: Physical layer procedures (FDD)

l 25.321: MAC protocol specification



Date post:	19-May-2015
Category:	Documents
Upload:	atif-mahmood
View:	3,531 times
Download:	6 times

Bts3812 E And Bts3812 A Product Description(V100 R008 04)

Documents