A8 Huawei WCDMA NodeB Introduction

8/11/2019 A8 Huawei WCDMA NodeB Introduction

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Wireless Curriculum Development Section

ISSUE

Huawei WCDMA NodeB Introduction

1.0



Confidential Information of Huawei.

No Spreading without Permission. Security Level: Internal

Introduction

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 different

requirements and actual conditions of operators, to

achieve the seamless coverage of cities, suburbs,

countryside, highways and hot spots.





Huawei UTRAN Solution





Huawei WCDMA NodeB

System Architecture

System Characteristics

Services and Functions

Reliability





System Architecture

Physical Architecture

Functional Architecture





Cabinet Appearance





Cabinet Configuration

BTS3812






BTS3806






Abbreviation Full name

NAOI NodeB ATM Optical Interface unit

NDCS NodeB DC Switch box

NDDL NodeB Dual Duplexer & Low-noise amplifier module

NDLP NodeB Down Link Processing Unit

NDTI NodeB Digital Trunk Interface unit

NFAN NodeB FAN box

NIFP NodeB Interface Processing Unit

NLPA NodeB Linear Power Amplifier module

NMON NodeB MONitor unit

NMPT NodeB Main Processing & Timing unit

NTRX NodeB Transceiver module

NTTA NodeB Tower Top Amplifier module

NULP NodeB Uplink Processing unit





System Architecture

Physical Architecture

Functional Architecture





Functional Modules

Iub

interface

BTS3812

RNC

Uu interface

Antenna & feeder

subsystem

UE

RF subsystem Baseband

subsystem

Transmission

subsystem

Controlsubsystem

O&M

subsystem

UE





Transmission subsystem

Interfacing with the RNC, and exchanging information

between the BTS3812 NodeB and the RNC

Supporting multiple transmission interfaces such as theE1/T1 interface and the ATM optical interface of STM-1





Baseband subsystem

Channel coding/decoding

Testing function: FER, SNR, Interference

Soft and softer handover, macro diversity

Decomposition and combination of transport channel and the

CCTrCH

Rate adaptation.

Mutual mapping of transport channels and physical channels.

Spreading/de-spreading, modulation/demodulation.

Radio channel synchronization.

Inner loop power control.





RF subsystem

The signal up/down frequency conversion, amplification and

filtering as well as the combining & dividing of small signals.

The processing of the intermediate frequency analog

signals between the baseband subsystem and the RF

subsystem.

The processing of the RF signals between the antenna and

feeder subsystem and the RF subsystem.





Control subsystem

The processing of NBAP signaling and

the resource management

Provisioning of various benchmark clocks

for other subsystems and modules





Antenna and feeder subsystem

The antenna and feeder subsystem comprises the

antenna, the feeder, the lightning conductor, the

tower top amplifier, etc. It completes the input and

output of the NodeB signals, transmits the radiofrequency signals via the air/radio interface. The

uplink is 1920 ~ 1980 MHz and the downlink is 2110

~ 2170 MHz.





Huawei WCDMA NodeB

System Architecture



Reliability






Wide Coverage

Large Capacity

Flexible Configuration & Easy Expansion

Powerful O&M Function

Flexible Networking

Series of NodeB for Seamless Coverage





Wide Coverage

Maximum access radius: 180 km.

Maximum transmit power of a single cell: 25 W

Diversity of 2 and 4 antennas

Tower-top amplifier

STTD, TSTD

Cell breathing





Large Capacity

Single BTS3812 cabinet supports 1536 equivalent voice

channels of 12.2 Kbit/s.

Single cabinet can support a maximum of 12 cells

Each sector can support up to 4 carriers, meeting the

requirements of high traffic areas.

Base-band subsystem adopts the resource pool

operational mode

Transmit diversity & four-antenna receiver diversity

Huawei's proprietary technology





Flexible Configuration & Easy Expansion

Various types of configurations: 3*1, 3*2, 3*4,

6*1, 6*2

Smooth expansion of the configurations: from

1*1 till 3*4 or 6*2

RF module: Blind Match





Powerful O&M Function

Maintenance terminal: Provides the MML command and

graphical interface, and the centralized maintenance

platform

Maintenance operation modes: Intranet, Local, Remote

Function: System status monitoring, Data configuration,

Alarm handling, Security management, Equipment

operation, Site monitoring





Flexible Networking

Transmission port: E1/T1, STM-1, Hybrid

Network topologies: Chain, Star, Tree

IMA and UNI

Synchronizition: RNC clock, GPS clocks and other

external clock

Supporting the construction of the RNS system into

an Intranet





Flexible Networking

NodeB

NodeB NodeB

NodeB NodeB

NodeB

RNC

NodeB NodeBRNC

RNC





Series of NodeB for Seamless Coverage

BTS3812

BTS3806

BTS3806A

BTS3802C

RRU3802C





Huawei WCDMA NodeB

System Architecture



Reliability






ServicesSupported Channels

Radio Network Functions





CS Domain Service

AMR voice service, including 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.

Transparent data service of 64 Kbit/s, 56 Kbit/s, 32

Kbit/s and 28.8 Kbit/s. The uplink and downlink data

rates might be asymmetrical.

Non-transparent data service of 57.6 Kbit/s, 28.8 Kbit/s

and 14.4 Kbit/s. The uplink and downlink data rates

might be asymmetrical.





PS Domain Service

web browsing, data downloading, E-mail, video on

demand and audio on demand.

typical rates, such as 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.





Combined Service

AMR voice service + PS domain service

AMR voice service + CS domain non-transparent data service

AMR voice service + CS domain transparent data service

CS domain transparent data service + PS domain service

CS domain non-transparent data service + PS domain service

AMR voice service + data service 1 + data service 2





Location Services

Huawei NodeBS support the location service based on

Cell_ID, OTDOA and A-GPS.






ServicesSupported Channels






Supported Channels

Logical Channels: BCCH, PCCH, CCCH, DCCH, DTCH,

CTCH

Transport Channels: DCH, BCH, FACH, PCH, RACH

Physical Channels: Uplink DPDCH, DPCCH, PRACH;

Downlink DPCH, SCH, CPICH, P-CCPCH, S-CCPCH,

PICH, AICH






Services

Supported Channels







Power Control: Open loop power control, Inner

loop power control, Outer loop power control,

Handover: Soft handover, Softer handover, Hard

handover

Measurement: SIR and SIRerror measurement,

Carrier transmit power estimation, Transmit code

domain power estimation, BER, BLER, RSSI,

RTT etc






Transmit Diversity: STTD, TSTD and the closed

loop transmit diversity of Mode 1 and Mode 2

Receive Diversity: Time diversity, Frequency

diversity, Space diversity, Polarization diversity





Huawei WCDMA NodeB

System Architecture



Reliability





Reliability

Reliability Design of the System

Reliability Design of the Hardware

Reliability Design of the Software





System Reliability

Redundancy The baseband boards (the NULPs and the

NDLPs) adopt the resource pool architecture. The two Iub

interface boards work in load-sharing mode.

Backup function Two NIFPs support the backup function.

E1/T1 bypass function under chain networking

Fault monitoring and handling





Hardware Reliability

Prevention of wrong board insertion

Speed shift and redundancy design for fan box

Reliability design for NLPA

Reliability design for power supply





Software Reliability

Regular check of critical resource

Task monitoring

Data check

Save of operation log information

A8 Huawei WCDMA NodeB Introduction

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