bts3802c system description

7/27/2019 BTS3802C System Description

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Chapter 1 Introduction to BTS3802C 1-1.............................................................

Chapter 2 Key Benefits 2-1...................................................................................

2.1 Coverage Capability 2-1...............................................................................

2.2 Capacity 2-1.................................................................................................

2.3 Networking Capability 2-1.............................................................................

2.4 Clock and Synchronization 2-2.....................................................................

2.5 Adaptability to Environment 2-2....................................................................

2.6 Installation 2-2..............................................................................................

2.7 Mini NodeB Overall Solution 2-2..................................................................

2.8 Evolution 2-3.................................................................................................

Chapter 3 System Architecture 3-1......................................................................

3.1 Physical Architecture 3-1..............................................................................

3.1.1 Appearance 3-1....................................................................................

3.1.2 Functional Architecture 3-2..................................................................

3.2 Configuration 3-3..........................................................................................

Chapter 4 Services and Functions 4-1.................................................................

4.1 Services 4-1..................................................................................................

4.2 Location Services 4-2...................................................................................

4.3 Handover 4-2................................................................................................

4.4 Diversity 4-2..................................................................................................

4.5 License Function 4-3....................................................................................

Chapter 5 Operation and Maintenance 5-1..........................................................

5.1 O&M System 5-1..........................................................................................

5.2 O&M Functions 5-2.......................................................................................

Chapter 6 Reliability 6-1........................................................................................

6.1 System Reliability 6-1...................................................................................

6.2 Hardware Reliability 6-1...............................................................................

6.3 Software Reliability 6-2.................................................................................

Chapter 7 Technical Specifications 7-1...............................................................

7.1 Radio Performance 7-1................................................................................

7.1.1 System Indices 7-1...............................................................................

7.1.2 Transmitting Indices 7-1.......................................................................

7.1.3 Receiving Indices 7-1...........................................................................

7.1.4 Capacity 7-2.........................................................................................

7.2 Engineering Parameters 7-2.........................................................................

7.2.1 Mechanical Dimensions 7-2.................................................................


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7.2.2 Weight 7-3............................................................................................

7.2.3 Power Requirements 7-3.....................................................................

7.2.4 Power Consumption 7-3.......................................................................

7.2.5 Transmission 7-4..................................................................................

7.2.6 External alarm interface 7-5.................................................................

7.2.7 Operating Environment Requirements 7-5...........................................

7.2.8 Electromagnetic Compatibility (EMC) 7-5............................................

7.2.9 Acoustic Noise 7-6...............................................................................

7.2.10 Storage Requirements 7-6.................................................................

7.2.11 Transportation Requirements 7-6......................................................

7.2.12 Quakeproof Protection 7-6.................................................................

Chapter 8 Installation 8-1......................................................................................

Index .................................................................................................................


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HUAWEI

BTS3802C WCDMA Mini NodeB

System Description

V100R003


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BTS3802C WCDMA Mini NodeB

System Description

Manual Version T2-030201-20040930-C-1.31

Product Version V100R003

BOM 31026001

Huawei Technologies Co., Ltd. provides customers with comprehensive technical support

and service. Please feel free to contact our local office or company headquarters.

Huawei Technologies Co., Ltd.

Address: Administration Building, Huawei Technologies Co., Ltd.,

Bantian, Longgang District, Shenzhen, P. R. China

Postal Code: 518129

Website: http://www.huawei.com

Email: [email protected]


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Copyright 2004 Huawei Technologies Co., Ltd.

All Rights Reserved

No part of this manual may be reproduced or transmitted in any form or by any

means without prior written consent of Huawei Technologies Co., Ltd.

Trademarks

, HUAWEI, C&C08, EAST8000, HONET, , ViewPoint, INtess, ETS, DMC,

TELLIN, InfoLink, Netkey, Quidway, SYNLOCK, Radium, M900/M1800,

TELESIGHT, Quidview, Musa, Airbridge, Tellwin, Inmedia, VRP, DOPRA, iTELLIN,

HUAWEI OptiX, C&C08iNET, NETENGINE, OptiX, iSite, U-SYS, iMUSE, OpenEye,

Lansway, SmartAX, infoX, TopEng are trademarks of Huawei Technologies Co.,

Ltd.

All other trademarks mentioned in this manual are the property of their respective

holders.

Notice

The information in this manual is subject to change without notice. Every effort has

been made in the preparation of this manual to ensure accuracy of the contents, but

all statements, information, and recommendations in this manual do not constitute

the warranty of any kind, express or implied.


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Summary of Updates

This section provides the update history of this manual and introduces the contents of

subsequent updates.

Update History

This manual is updated for a major product version to maintain consistency with system

hardware or software versions and to incorporate customer suggestions.

Manual Version Notes

T2-030201-20040210-C-1.30 Initial commercial release

T2-030201-20040930-C-1.31 Second commercial release

Updates of Contents

Updates between manual versions are cumulative. Therefore, the latest manual

version contains all updates made to previous versions.

Updates Made between Versions 1.30 and 1.31

1) Modifying the chapter title.

2) Modifying the technical specifications of BTS3802C.

3) Adding the index of this manual.


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About This Manual

Release Notes

The product version that corresponds to the manual is Huawei BTS3802C WCDMA

Mini NodeB V100R003.

Organization

The manual consists of 8 chapters that brief the characteristics, application,

architecture and technical specifications of BTS3802C WCDMA Mini NodeB.

Chapter 1 Introduction to BTS3802C. It briefly introduces the orientation of

BTS3802C in the network.

Chapter 2 Key Benefits. It introduces the main features of BTS3802C.

Chapter 3 System Architecture. It introduces the appearance and functions of

BTS3802C.

Chapter 4 Services and Functions. It introduces the main functions and services of

BTS3802C.

Chapter 5 Operation and Maintenance. It introduces the operation and maintenance

function of BTS3802C and the structure of the network management system.

Chapter 6 Reliability. It introduces the measures taken in reliability design of

BTS3802C from the aspects of system, hardware and software.

Chapter 7 Technical Specifications. It lists the main performance indices and

engineering parameters of BTS3802C.

Chapter 8 Installation. It introduces the installation features of BTS3802C.

Intended Audience

The manual is intended for the following readers:

z Technical marketing specialists

z Installation engineers and technicians

z Operation and maintenance personnel

Conventions


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This manual uses the following conventions:

I. General conventions

Convention Description

Arial Normal paragraphs are inArial.

Arial Narrow Warnings, Cautions, Notes and Tips are in Arial Narrow.Boldface Headings are in Boldface.

II. Symbols

Eye-catching symbols are also used in the manual to highlight the points worthy of

special attention during the operation. They are defined as follows:

Note Means a complementary description.


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System DescriptionBTS3802C WCDMA Mini NodeB Table of Contents

i

Table of Contents

Chapter 1 Introduction to BTS3802C........................................................................................... 1-1

Chapter 2 Key Benefits ................................................................................................................. 2-1

2.1 Coverage Capability .......................................................................................................... 2-1

2.2 Capacity............................................................................................................................. 2-1

2.3 Networking Capability........................................................................................................ 2-1

2.4 Clock and Synchronization ................................................................................................ 2-2

2.5 Adaptability to Environment ............................................................................................... 2-2

2.6 Installation.......................................................................................................................... 2-2

2.7 Mini NodeB Overall Solution.............................................................................................. 2-2

2.8 Evolution ............................................................................................................................ 2-3

Chapter 3 System Architecture.................................................................................................... 3-1

3.1 Physical Architecture ......................................................................................................... 3-1

3.1.1 Appearance............................................................................................................. 3-1

3.1.2 Functional Architecture ........................................................................................... 3-2

3.2 Configuration...................................................................................................................... 3-3

Chapter 4 Services and Functions .............................................................................................. 4-1

4.1 Services ............................................................................................................................. 4-1

4.2 Location Services............................................................................................................... 4-2

4.3 Handover ........................................................................................................................... 4-2

4.4 Diversity ............................................................................................................................. 4-2

4.5 License Function................................................................................................................ 4-3

Chapter 5 Operation and Maintenance........................................................................................ 5-1

5.1 O&M System...................................................................................................................... 5-1

5.2 O&M Functions.................................................................................................................. 5-2

Chapter 6 Reliability...................................................................................................................... 6-1

6.1 System Reliability............................................................................................................... 6-1

6.2 Hardware Reliability........................................................................................................... 6-1

6.3 Software Reliability ............................................................................................................ 6-2

Chapter 7 Technical Specifications.............................................................................................7-1

7.1 Radio Performance............................................................................................................ 7-1

7.1.1 System Indices........................................................................................................ 7-1

7.1.2 Transmitting Indices................................................................................................ 7-1

7.1.3 Receiving Indices.................................................................................................... 7-1

7.1.4 Capacity .................................................................................................................. 7-2

7.2 Engineering Parameters .................................................................................................... 7-2

7.2.1 Mechanical Dimensions .......................................................................................... 7-2


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System DescriptionBTS3802C WCDMA Mini NodeB Table of Contents

ii

7.2.2 Weight ..................................................................................................................... 7-3

7.2.3 Power Requirements............................................................................................... 7-3

7.2.4 Power Consumption................................................................................................ 7-3

7.2.5 Transmission........................................................................................................... 7-4

7.2.6 External alarm interface .......................................................................................... 7-5

7.2.7 Operating Environment Requirements.................................................................... 7-5

7.2.8 Electromagnetic Compatibility (EMC) ..................................................................... 7-5

7.2.9 Acoustic Noise......................................................................................................... 7-6

7.2.10 Storage Requirements .......................................................................................... 7-6

7.2.11 Transportation Requirements................................................................................ 7-6

7.2.12 Quakeproof Protection .......................................................................................... 7-6

Chapter 8 Installation.................................................................................................................... 8-1

Index ................................................................................................................................................ i-1


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System DescriptionBTS3802C WCDMA Mini NodeB Chapter 1 Introduction to BTS3802C

1-1

Chapter 1 Introduction to BTS3802C

A series of WCDMA NodeBs is offered by Huawei according to the 3GPP R99/R4 FDD

protocols. Huawei can offer various customized solutions of the WCDMA radio access

network according to the various requirements and actual conditions of network

operators, to achieve seamless coverage of cities, suburbs, countryside, highways and

hot spots. Figure 1-1 shows a typical solution of the WCDMA radio access network

supported by Huawei. A series of NodeBs is given in Table 1-1.

RNC

RNC

WCDMA CS

WCDMA PS

Indoor NodeB Outdoor NodeB Mini NodeB / RRU

UTRAN

UE

UE

UE

Figure 1-1Typical solution of WCDMA radio access network

Note:A Radio Remote Unit (RRU) has the same appearance as Huawei mini NodeB.


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System DescriptionBTS3802C WCDMA Mini NodeB Chapter 1 Introduction to BTS3802C

1-2

Table 1-1Applications of series of NodeBs

NodeBMaximumnumber

of cells

Capacity Application Indoor/Outdoor

BTS3812 12 Large Densely populated areas, such as cities Indoor

BTS3806 6 MediumSmall and middle-sized cities and towns with lowequipment room requirements

Indoor

BTS3806A 6 Medium Areas hard to set up an equipment room Outdoor

BTS3802C 2 Small Indoor, highways, railways and so on Indoor and outdoor

RRU 2 Small Cities, highways, railways and so on Indoor and outdoor

BTS3802C is a type of 2-carrier mini NodeB developed by Huawei according to the

3GPP R99 FDD/R4 protocols. BTS3802C is characterized by small size, large capacity,

flexible addressing, easy installation, little cost, and so on. It is suitable for the following

areas:

z Medium/Low traffic areas such as suburbs, countryside, highways, and so on.

BTS3802C can quickly deploy in those traffic areas with little cost.

z Blind spots such as tunnels, subway stations, buildings, and so on. BTS3802C

can improve the network coverage and Quality of Service (QoS) without

remarkable additional cost.

z Hot spots such as marketplaces, stadiums, and so on.BTS3802C can greatly

improve the network capacity and QoS in hot spots.

z Areas where an equipment room cannot be constructed. BTS3802C is

especially applicable to the outdoor environment. It can quickly enhance the

network coverage and QoS in the areas where an equipment room cannot be

constructed.


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System DescriptionBTS3802C WCDMA Mini NodeB Chapter 2 Key Benefits

2-1

Chapter 2 Key Benefits

BTS3802C has embodied the user-centered design ideas. It is a type of highly

integrated equipment that is characterized as described in the following sections.

2.1 Coverage Capability

1) BTS3802C supports power amplifiers of different types. The maximum transmit

power per power amplifier can be 20W, 10 W or 5 W.

2) The transmit diversity mode is supported so that the downlink demodulation gains.

3) The cell breathing function is supported. The cell breath gain adjustment range iswithin 10 dB.

4) The maximum search capability is 180 km. The maximum access search radius is

configurable.

5) The 1-way receiver sensitivity is better than 125 dBm.

6) The 2-way receiver sensitivity is better than 128 dBm.

7) Multiple receive diversity modes are supported, including 2-way receive diversity

and RAKE multi-path receive diversity, as guarantees the uplink demodulation

performance and receiver sensitivity.

2.2 Capacity

1) A single BTS3802C cabinet supports 64 equivalent voice channels of 12.2 kbit/s.

2) A single BTS3802C cabinet can support up to 2 cells.

2.3 Networking Capability

1) Trunk port supported:

z E1

z T1

z Channelized STM-1

2) Network topologies supported:

z Chain

z Star

z Ring

3) Co-transport of 2G and 3G equipment for mobile communication:

BTS3802C can provide transmission links for 2G BTSs by means of CES mode, or use

the transmission links provided by 2G BTSs to transmit the Iub interface data.


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2-2

2.4 Clock and Synchronization

Multiple synchronization modes are supported for different network environments,

including:

1) Synchronizing with the clock extracted from the Iub interface (default)

2) Synchronizing with the Global Position System (GPS)

3) Supporting free-run working mode which can keep the NodeB in normal working

state for 90 days or longer

2.5 Adaptability to Environment

BTS3802C has great adaptability to environment.

1) It complies with the IP55 of International Protection Standard regarding thewaterproof and dustproof requirements. In the aspect of three proofing like

moisture proofing, mould proofing and salt proofing, it meets the first-level

protection requirements. It can work normally in adverse environments. It is

sheltered from the sun by means of its enclosure and sunshields.

2) It has a wide operating temperature range. BTS3802C can work normally under

the temperature 40 C~+55 C (ambient temperature).

3) It has a wide operating voltage range. BTS3802C can work normally under the

voltage 150 V AC~300 V AC.

4) It is under good lightning protection. BTS3802C is equipped with a built-in lightning

protection board and an external power supply lightning protection box.

5) It has a variety of installation mode. BTS3802C can be installed on a wall, column,

tower or pole.

6) It supports hierarchical power supply, as ensures the lower-level NodeBs can work

normally even when there is no mains supply.

2.6 Installation

1) BTS3802C is small and light and can be directly and easily installed on a

prefabricated pole, stayed tower or wall. No special tower is required.

2) BTS3802C can use in outdoor environment directly. No equipment room or air

conditioner is required. Therefore, a BTS3802C can be installed quickly with little

cost.

2.7 Mini NodeB Overall Solution

For a BTS3802C all auxiliary equipment is provided, including auxiliary facility box,

auxiliary battery box, AC lightning protection box, and Uninterruptible Power Supply

(UPS). The overall solution for the BTS3802C covers the aspects of power distribution,


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2-3

lightning protection, transmission cables, transmission equipment and power backup

and so on.

2.8 Evolution

Smooth upgrade and capacity expansion is considered for the design of BTS3802C in

the following aspects.

I. Smooth evolution of protocol releases

The present BTS3802C is based on 3GPP R99/R4 FDD protocols release and it

supports the smooth evolution to 3GPP R5 FDD protocol releases.

II. Enhancement of function and technology

1) The present BTS3802C supports three transmission modes, that is, E1

transmission, T1 transmission and SDH transmission. It will be able to support

more transmission modes such as microwave transmission, xDSL, satellite

transmission, and so on in the future.

2) The future BTS3802C will be enhanced by some technologies, specifically:

z Remote Electric Tilt (RET) antenna. It facilitates the antenna tilt adjustment and

enhances the network coverage.

z High Speed Downlink Packet Access (HSDPA). It is a modulation

demodulation algorithm put forward in 3GPP R5 for asymmetricaluplink/downlink

data service transmission. It plays an important role in increasing downlink

capacity and data service rate in the later WCDMA network construction phase It

makes it possible to increase the downlink data service rate to 10 Mbit/s without

changing the original WCDMA network architecture.

z Multi-user Detection (MUD). That is, to perform combined detection for multiple

users so as to limit the multiple accessinterference. It is a good solution to the

near-far problem. The technology lowers the requirements for power control

precision, and therefore can make better use of the spectrum resources and

enhance the system capacity and coverage.


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System DescriptionBTS3802C WCDMA Mini NodeB Chapter 3 System Architecture

3-1

Chapter 3 System Architecture

3.1 Physical Architecture

3.1.1 Appearance

Complying with the IEC 297 standard, the cabinet size of BTS3802C is 700 mm (H) %460 mm (W) % 350 mm (D). Figure 3-1 shows the appearance of BTS3802C cabinet.

Figure 3-1Appearance of BTS3802C cabinet

BTS3802C comprises three modules: NodeB main control unit (NMCU), NodeB digital

radio frequency unit (NDRU), and NodeB power supply unit (NPSU). Figure 3-2 shows

the internal configuration of a BTS3802C.


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3-2

(1) (1)

(2)

(3) (4) (4)(5)

NDRU

NMCU

NDRU

NPSU

(1) Heat pipe radiator (2) O&M cavity (3) Power cable(4) Antenna & feeder interface (5) NMCU interface

Figure 3-2Internal configuration of BTS3802C (front view and top view)

3.1.2 Functional Architecture

The functional modules of a BTS3802C are shown in Figure 3-3.

Antenna

RNC

ACNPSU

BTS3802C Cabinet

NMCU NDRU

Figure 3-3Functional architecture of BTS3802C

I. NodeB Main Control Unit (NMCU)

The NMCU is a separate physical module.

The NMCU is divided into 4 function units that is baseband process unit, main control

unit, time unit and transmission unit.

The baseband process unit implements random access, demodulation, encoding and

modulation.


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3-3

The main control unit implements NBAP signaling process, resource management,

operation and maintenance, monitor, and interface of input and output control.

Time unit stabilizes the clock signal received via the Iub interface. A number of timing

signals is created to be distributed to the rest of the NodeB. Time unit contains support

for connection of an external GPS receiver for synchronization and positioning

purposes.

Transmission unit interfaces with the RNC, bearing the ATM switching function. The

interface can be E1/T1 or STM-1.

II. NodeB Digital and Radio Unit (NDRU)

NDRU includes functionality of transceiver unit, power amplifier unit and duplexer unit.

Transceiver unit includes all functionality for receiving and transmitting the RF signal.

The Rx path comprises functionality for downlink conversion, A/D conversion and

filtering for each cell-carrier; the Tx path comprises functionality for modulation, D/A

conversion and uplink conversion for cell-carrier.

Power amplifier unit is amplifies carriers signal to be transmitted.

The duplexer unit allow both receiver and transmitter path connections to a common

antenna and filters uplink and downlink signal. The duplexer minimizes the number of

required feeders.

III. NodeB Power Supply Unit (NPSU)

NPSU enables AC-DC conversion and distributes the power to all the modules.

IV. Antenna & feeder subsystem

The antenna & feeder subsystem comprises the antennas, feeders, and so on. It

transmits and receives signals over the Uu interface of the NodeB.

3.2 Configuration

Table 3-1 shows the configurations for BTS3802C.

Table 3-1Configurations for BTS3802C

Configuration Transmit diversity

1 1 Opt.

1 2 No

2 1 No


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3-4

Configuration Transmit diversity

0.5/0.5 No

The configuration features of BTS3802C are as follows:

1) Supporting 1 1 and no transmit diversity configuration

2) Supporting 1 1 and transmit diversity configuration

3) Supporting 1 1, no transmit diversity and 4-way receive diversity configuration.

4) Supporting 1 2 configuration

5) Supporting 2 1 configuration

6) Supporting 0.5/0.5 configuration. This configuration can be applied in low traffic

strip areas, like an area along a highway or railway. In this case, BTS3802C uses

two directional antennas that cover two areas. The two areas adopt the samefrequency. BTS3802C regards the two areas together as one cell. Handover is not

required when a UE moves between the two areas.


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System DescriptionBTS3802C WCDMA Mini NodeB Chapter 4 Services and Functions

4-1

Chapter 4 Services and Functions

4.1 Services

BTS3802C supports Circuit Switched (CS) domain services and Packet Switched (PS)

domain services of various rates, as well as the combination of PS domain services

and CS domain services.

I. CS domain services

The CS domain services are the telecommunication services that pose relatively high

real-time requirements, including Adaptive Multi Rate (AMR) voice services and data

services like fax. There are two types of CS domain data services: transparent services

and non-transparent services.

1) AMR voice services

The BTS3802C supports the AMR voice services of 12.2 kbit/s, 10.2 kbit/s, 7.95 kbit/s,

7.4 kbit/s, 6.7 kbit/s, 5.9 kbit/s, 5.15 kbit/s and 4.75 kbit/s. The uplink and downlink AMR

voice rates might be asymmetrical.

2) Transparent data services

The BTS3802C supports the transparent data services of 64 kbit/s, 56 kbit/s, 32 kbit/s

and 28.8 kbit/s. The uplink and downlink data rates might be asymmetrical.

3) Non-transparent data services

The BTS3802C supports the non-transparent data services of 57.6 kbit/s, 28.8 kbit/s

and 14.4 kbit/s. The uplink and downlink data rates might be asymmetrical.

II. PS domain services

The WCDMA system distinguishes itself from the 2G system by its high transfer rate of

data services. This distinct feature gives subscribers high speed access to the Internet

and makes the system capable of supporting services such as web browsing, data

downloading, E-mail, video on demand and audio on demand. The BTS3802C

supports the PS domain services of 16 kbit/s, 32 kbit/s, 64 kbit/s, 128 kbit/s, 144 kbit/s

and 384 kbit/s. It supports transmission with Transmission Time Interval (TTI) of 10 ms,

20 ms, 40 ms and 80 ms. The uplink and downlink data rates might be asymmetrical.

III. Combined services

The BTS3802C also supports various combined services, including:


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4-2

z AMR voice service + PS domain service

z AMR voice service + CS domain non-transparent data service

z AMR voice service + CS domain transparent data service

z

CS domain transparent data service + PS domain servicez CS domain non-transparent data service + PS domain service

z AMR voice service + data service 1 + data service 2

4.2 Location Services

The BTS3802C supports the location service based on Cell ID, OTDOA and A-GPS.

4.3 Handover

The BTS3802C supports soft handover, softer handover and hard handover.

1) Soft handover

The soft handover takes place between intra-frequency neighboring cells that belong to

different NodeBs. These NodeBs should be controlled by the same RNC. If the NodeBs

are controlled by different RNCs, there should be an Iur interface between the RNCs.

2) Softer handover

The softer handover, a special kind of soft handover, takes place between

intra-frequency neighboring cells that belong to the same NodeB. During softer

handover, the UE establishes radio links with two cells under the NodeB and the NodeBmerges the diversity signals the two cells receive from the UE. Generally the

communication quality in softer handover is better than that in soft handover.

3) Hard handover

The BTS3802C supports the following kinds of hard handover:

z Intra-frequency hard handover: the handover between intra-frequency cells under

RNCs not interconnected through the Iur interface.

z Inter-frequency handover: the handover between cells at different frequencies.

z Inter-Core Network (CN) handover.

z Inter-Radio Access Technology (inter-RAT) handover: the handover between theGSM and WCDMA systems. The BTS3802C supports seamless transition from

2G to 3G and handover of dual-mode UEs between 2G and 3G.

4.4 Diversity

I. Transmit diversity

The BTS3802C supports the open loop Space Time Transmit Diversity (STTD) and

Time Switched Transmit Diversity (TSTD) and the closed loop transmit diversity of


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4-3

Mode 1 and Mode 2. The transmit diversity function is optional and can be selected

based on the actual requirements of network operators.

II. Receive diversity

The BTS3802C generally supports 2-way receive diversity. 4-way receive diversity will

be supported when configured as single carrier.

4.5 License Function

Traditionally network operators can accomplish rough capacity expansion by

purchasing more hardware. A License provides the mechanism for precise capacity

control. With a License, network operators may obtain a rather small system with small

investment in the initial phase of network deployment.

With a License, network operators may also acquire enhanced functions and services

and provide the corresponding value added services. They may choose the network

functions applicable to a specific phase so that their investment will be protected to the

greatest extent.


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System DescriptionBTS3802C WCDMA Mini NodeB Chapter 5 Operation and Maintenance

5-1

Chapter 5 Operation and Maintenance

5.1 O&M System

The O&M system of the BTS3802C provides a Graphical User Interface (GUI) and a

variety of MML commands to support customized man-machine interfacing. It provides

various functions such as security management, data configuration, alarm

management, maintenance management, performance test, environment monitoring,

and so on. The O&M system of BTS3802C is shown in Figure 5-1.

RNC

NodeB

NodeB

IP over Ethernet

IP over Ethernet

IPoA

IPoA

Internet/DDN

PSTN

Modem

Modem

PSTN

Modem

Modem

iManager M2000LMT

LMT

LMT

LMT

LMT

LMT

Figure 5-1O&M system of BTS3802C

The O&M terminals of the BTS3802C include the Local Maintenance Terminal (LMT)

and the iManager M2000.

The BTS3802C supports the following maintenance modes:

Near end maintenance, that is, the maintenance personnel connect a LMT to the

BTS3802C directly using a network cable and log into the NodeB to perform

maintenance through the LMT.

Far end maintenance, that is, the maintenance personnel log into the BTS3802C to

perform maintenance via the IPoA channel between the NodeB and the RNC on a LMT

in the RNC room or the M2000 Server in the integrated management center. A


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5-2

BTS3802C is generally in an unattendant room. The far end maintenance is applicable

to this case.

Automatic setup of default maintenance channel, that is, a default IPoA

maintenance channel can be automatically set up between the RNC and the NodeB.

Generally, BTS3802C has only NodeB software but no data configuration file after

hardware installation. With this function, the maintenance personnel can download the

data configuration file to the BTS3802C at the far end. The function decreases the

operation and maintenance costs and enhances the maintainability and maintenance

quality.

5.2 O&M Functions

The BTS3802C puts great emphasis on network operators requirements for operationand maintenance and offers powerful functions in this aspect, including security

management, alarm management, data configuration, maintenance & test

management, and so on.

I. Security management

The BTS3802C provides powerful security management functions so that users

operations and equipment's performance can be effectively managed and controlled.

II. Alarm management

Alarm information is an important reference for locating faults. To locate and remove

faults timely is very important for stable system operation. The alarm management

system of the BTS3802C can detect and report equipment faults and abnormality in

real time and display alarm information and alarm handling suggestions at alarm

management system of the LMTs or M2000.Alarm management system of M2000 can

be connected through a serial port to an alarm box which supports audible and visible

alarm modes. The alarms can also be subscribed by maintenance engineers and

forwarded to the handsets or pagers of the maintenance engineers.

III. Data configuration

The O&M system of the BTS3802C allows addition, deletion, modification and

consistency check of the NodeB data. It supports both online and offline data

configurations. For online data configuration the modified data will take into effect at

once. While for offline data configuration it will do only after the reset of NodeB.

IV. Maintenance & test management

The O&M system of the BTS3802C provides the following maintenance & test

functions:


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5-3

z Supporting monitoring or querying of the board operation status so that users can

know system operation timely.

z Automatic backup function for data configuration files and maintenance logs. The

interval between backups and the backup directory are configurable.z Supporting querying of the hardware, software and patches versions.

z Supporting real-time monitoring of system operational indices and system

resources (such as CPU and DSP).

z Supporting status query, performance measurement and reset of Iub interface

physical links.

z Supporting reset of boards and key components.

z Supporting blocking and unblocking operations to boards and board resources.

z Supporting tracing, filtration and interpretation of Iub interface signaling. The

traced messages can be saved, reviewed and browsed.


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System DescriptionBTS3802C WCDMA Mini NodeB Chapter 6 Reliability

6-1

Chapter 6 Reliability

6.1 System Reliability

I. Fault monitoring and handling

BTS3802C can automatically detect and diagnose any hardware or software fault, and

report it as an alarm. It can also collect the environment conditions and report the

abnormality (if any) in time.

BTS3802C provides a protection mechanism for all boards with software. When the

system or a module interrupted due to hardware or software fault, it would automatically

restart and reload data.

BTS3802C has a temperature monitoring system and a heating system. When the

internal temperature gets too low, the heating board will automatically start to heat the

whole cabinet. In case of too high temperature, the system will immediately report it as

an alarm and the NPSU will automatically shut down for overheat protection.

II. Reliability design of Tx channel and Rx channel

Tx diversity channels and Rx diversity channels work in an independent mode.

BTS3802C can still provide service even when only one of Tx channels and one of Rx

channels is normal.

6.2 Hardware Reliability

I. Input power design

BTS3802C has a wide operating voltage range. It has a primary power supply, allowing

voltage of 150 V AC~300 V AC. The primary power supply cannot be affected even at

the voltage of 350 V AC. This can protect the cabinet from damage due to power-supply

fluctuation.

II. Power amplifier design

Power amplifier can be automatically switched off when it is too hot. When the link of

the Iub interface is broken, the Tx channel can be automatically switched off. When the

link recovers, the Tx channel can be automatically switched on.


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System DescriptionBTS3802C WCDMA Mini NodeB Chapter 6 Reliability

6-2

6.3 Software Reliability

Software reliability is reflected in the powerful capability of error tolerance. The whole

system will not corrupt when the software fails, that is, the system has the capability ofself-healing. The capability of error tolerance of BTS3802C is shown in the following

aspects:

I. Regular check of critical resource

Seizure check is provided for various software resources in the system. If resource

failure occurs due to software abnormality, the check mechanism can ensure that the

failed resource will be soon released and that the corresponding logs and alarms will be

soon output.

II. Task monitoring

During software running, the monitoring procedure can monitor the task running and

process the system abnormality (various software internal errors and partial hardware

errors) and report it to the external.

III. Storage protection

The software system adopts the segment/page protection mechanism for the CPU

memory management unit (MMU) that implements storage protection for codes and

important data segments, and accomplishes online viewing, variable and data

modification and memory area monitoring.

IV. Data check

The system is able to perform regular or event-driven check of data consistency,

restore the data consistency selectively or preferably and output the related log and

alarm.

V. Save of operation log information

The system records the user operation for a period of time and saves the records in the

system operation log. The operation log can be used to locate the error or exception

due to incorrect operation so that the system can be restored to normal state.


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System DescriptionBTS3802C WCDMA Mini NodeB Chapter 7 Technical Specifications

7-1

Chapter 7 Technical Specifications

7.1 Radio Performance

7.1.1 System Indices

Table 7-1System indices

Parameter Indices

Receiving band 1920~1980 MHz

Transmitting band 2110~2170 MHz

Channel bandwidth 5 MHz

Duplex separation 190 MHz

7.1.2 Transmitting Indices

The rated output power per carrier at BTS3802C Tx antenna connector is shown in

Table 7-2.

Table 7-2Output power

Poweramplification

Transmit diversity mode Output power Availability

No transmit diversity 20 W 1 1, 1 2, 2 1, 0.5/0.520 W

Transmit diversity 40 W 1 1

No transmit diversity 10 W 1 1, 1 2, 2 1, 0.5/0.510 W


No transmit diversity 5 W 1 1, 1 2, 2 1. 0.5/0.55 W


7.1.3 Receiving Indices

The static RF sensitivity of the BTS3802C with Rx antenna diversity at the antenna

connector is listed in Table 7-3, with following assumptions BER < 10-3

. Convolutional


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7-2

coding 1/3 at 60 kbit/s, using 3GPP measurement channel with 12.2 kbit/s information

bitrate.

Table 7-3Receiver sensitivity

Receive diversity mode Receiver sensitivity

1-way receive diversity 125 dBm

2-way receive diversity 128 dBm

7.1.4 Capacity

The number of channel elements can be optimized to fit the current need depending on

the type of services and the number of subscribers using the different services. Table

7-4 defines maximum capacity for BTS3802C.

Additional capacity is provided for common channels and Softer Handover. The full

capacity is pooled over all cell-carriers.

Table 7-4Capacity

Item Channel elements

Uplink 64

Downlink 64

7.2 Engineering Parameters

7.2.1 Mechanical Dimensions

Table 7-5Mechanical Dimensions.

Unit Width (mm) Depth (mm) Height (mm)

Cabinet 460 350 700

Sunshield 700 500 820

Note:Sunshield is optional equipment. It is used outdoors only and is 50~100 mm above the cabinet.


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7-3

7.2.2 Weight

Table 7-6 Weight

Unit Weight (kg)

Full configuration 55

1 1, normal configuration 43

7.2.3 Power Requirements

The BTS3802C complies with the requirement regarding to the rated 220 VAC power

supply stipulated in ETS 300 132-2. The external power supply equipment has tocomply with this standard.

Table 7-7 Power requirements

Value

Rated voltage 220 V AC

Input voltage range 150 V AC ~ 300 V AC

7.2.4 Power Consumption

The maximum power consumption of BTS3802C is listed in Table 7-8.

Table 7-8Power consumption

Power amplification Number of NDRU Maximum power consumption (W)

2 380 W20 W

1 210 W

2 290 W10 W

1 180 W

2 270 W5 W

1 170 W


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7-4

7.2.5 Transmission

I. Transmission interfaces

Table 7-9Transmission interfaces

Name Quantity Speed Standards

T1 2 pairs 1.5 Mbit/s ANSI-G.703/G.704

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

Channelized STM-1 2 155 Mbit/s ANSI T1.105-1995ITU I.432.2 G.703ITU G.957

II. 2G cascading interfaces

Table 7-102G cascading interfaces

Name Quantity

T1 1/2 pairs

E1 1/2 pairs

Note:2 pairs E1/T1 can be provided to 2G cascading when BTS3802C is connected with RNC by STM-1,

III. External interfaces

Table 7-11External interfaces

Interface Type Qty

Clock interface GPS 1

Power supply 1

Protection grounding 1

Power and grounding interface

Power grounding 1

Monitoring interface external alarms ports 4

Antenna & feeder interface RF signal interface 2/4


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7-5

Note:There are 4 RF signal interface when BTS3802C is configured as 4 way receiver diversity.

7.2.6 External alarm interface

BTS3802C has 4 External alarms and 0 Output control ports for supervision and control

of external equipment at the site.

The operator may define up to 4 external alarms ports. The alarm contacts are

electrically isolated from the NodeB. The external device sets the alarm by either an

open or closed condition.

The external alarm interfaces characteristics are described in Table 7-12.

Table 7-12external alarm interfaces characteristics

Details for Input Ports Characteristics

Closed Resistance Closed < 1k ohm

Open Resistance Open > 51k ohm

Min. current 5 mA

external alarms ports

Min Voltage 6 V

7.2.7 Operating Environment Requirements

Table 7-13Operation environment requirements

Name Range

Temperature 40C ~+55 C

Relative humidity 5 %~100 %

7.2.8 Electromagnetic Compatibility (EMC)

All BTS3802C models fulfill the following Electromagnetic Compatibility (EMC)

requirements:

z R&TTE Directive 99/5/EC

z 3GPP TS 25.113 V4.4.0 (2002-12)

z ETSI EN 301 489-1/23

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


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7-6

BTS3802C has passed the CE certification.

7.2.9 Acoustic Noise

BTS3802C has no fan and will not make any noise.

7.2.10 Storage Requirements

The BTS3802C complies with ETS class 1.3 Non Weather Protected locations, Not

Temperature Controlled Storage Locations in ETS 300 019-1-1.

7.2.11 Transportation Requirements

The BTS3802C complies with ETS class 2.3 Public Transportation in

ETS 300 019-1-2.

7.2.12 Quakeproof Protection

BTS3802C fulfills the following quakeproof protection standards:

z IEC Class 3M5

z ETSI EN 301 908-3


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System DescriptionBTS3802C WCDMA Mini NodeB Chapter 8 Installation

8-1

Chapter 8 Installation

The BTS3802C features easy installation. All internal cables and module of the NodeB

have been installed and tested according to the requirements of network operators

before delivery. The field installation personnel need only fix the cabinet, install the

external cables and download the data configuration file.

The BTS3802C is small and light and can be directly and easily installed on a

prefabricated pole, stayed tower or wall. No special tower is required.

The BTS3802C can use the mains supply directly. No equipment room or airconditioner is required. Therefore, a BTS3802C can be installed quickly with little cost.

For a BTS3802C all auxiliary equipment is provided, including auxiliary facility box,

auxiliary battery box, AC lightningproof box, Uninterruptible Power Supply (UPS). The

overall solution for the BTS3802C covers the aspects of power distribution, lightning

protection, transmission cables, transmission equipment and power backup and so on.

The external cables of the BTS3802C are easy to install. Ports for the antenna jumpers,

power cables and transmission cables are all at the bottom of the cabinet with

corresponding silk-screens.

Automatic setup of default maintenance channel, that is, a default IPoA maintenance

channel can be automatically set up between the RNC and the NodeB. Generally,

BTS3802C has only NodeB software but no data configuration file after hardware

installation. With this function, the maintenance personnel can download the data

configuration file to the BTS3802C at the far end. The function decreases the operation

and maintenance costs and enhances the maintainability and maintenance quality.

The easy BTS3802C software and hardware installation facilitates the quick network

deployment.


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System DescriptionBTS3802C WCDMA Mini NodeB Index

i-1

Index

A

acoustic noise, 7-6

adaptability to environment, 2-2

alarm management, 5-2

antenna and feeder subsystem, 3-3

B

BTS3802C, 1-1BTS3806, 1-2

BTS3806A, 1-2

BTS3812, 1-2

C

cabinet

appearance, 3-1

composition, 3-1

capacity, 2-1

capacity indices, 7-2

clock and synchronization, 2-2

configuration

feature, 3-4

typical configuraiton, 3-3

coverage capability, 2-1

D

data configuration, 5-2

default maintenance channel, 5-2

dimension, 7-2

diversity, 4-2

receive diversity, 4-3

transmit diversity, 4-2

E

EMC, 7-6

F

far end maintenance, 5-1

functional architecture, 3-2

H

handover, 4-2

hard handover, 4-2

soft handover, 4-2

softer handover, 4-2

hardware reliability, 6-1

high speed downlink packet access, 2-3

I

installation, 2-2, 8-1

interface

2G cascading interface, 7-4

external alarm interface,7-5

other external interface, 7-4

transmission interface, 7-4

K

key benefit, 2-1

L

license function, 4-3

M

maintenance and test management, 5-2

multi-user detection, 2-3

N

NDRU, 3-3

near end maintenance, 5-1

networking capability, 2-1

NMCU, 3-2

NPSU, 3-3


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System DescriptionBTS3802C WCDMA Mini NodeB Index

O

O&M function, 5-2

O&M system, 5-1

operation and maintenance, 5-1

operation environment requirement, 7-5

P

power consumption, 7-3

power requirement, 7-3

Q

quakeproof protection, 7-6

R

receiving indices, 7-2

reliability, 6-1

RET, 2-3

RRU, 1-2

S

security management, 5-2

service, 4-1

AMR voice service, 4-1

combined service, 4-1

CS domain service, 4-1

location service, 4-2

non-transparent data service, 4-1

PS domain service, 4-1

transparent data service, 4-1

service and function, 4-1

software reliability, 6-2

storage requirement, 7-6

system architecture, 3-1

system indices, 7-1

system reliability, 6-1

T

technical specification, 7-1

transmitting indices, 7-1

transportation requirement, 7-6

W

weight, 7-3

i.

bts3802c system description

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