01 ZXSDR NodeB Structure and Principle_PPT-45

ZXSDR NodeB Structure and Principle

ZTE University

ZXSDR Overview

B8200 Hardware System Structure

R8840/RSU40 Hardware System Structure

Introduction of SDR 8000 Series Products

Cable Connection and Networking

Content

Main Functions of Node B

Connect with RNC through Iub interface to fulfill the following functions：1. Reporting Node B measurement information

2.Forwarding system information broadcast provided by RNC

3. Performing access control, mobility management, radio resource management, and control command delivered by RNC

Fulfill local environment monitoring

Fulfill radio link transmission with UE at Uu interface

Software Defined Radio (SDR) Base Station

Features of SDR base station:

The 2G-3G base stations share baseband modules.

The 2G-3G base stations share radio frequency

modules.

The 2G-3G base stations share antenna feeder systems.

The 2G-3G base stations share network management.

Software Defined Radio (SDR) Base Station

Based on the SDR platform. It centers on the baseband pool

unit B8200, and consists of

BS8800 series for indoor macro site.

BS8900 series for outdoor macro site.

BS8700 series for flexible distribute.

Module Composition – BaseBand Unit(BBU)

Iub interfacemodule

RRU interface

module

Main control module (CPU)

BBU

Iub interface RRU interface

RNC RRUBaseband

processing

module

Module Composition – Radio Module

Typical Applications of SDR Base Station

Macro base stationLocal coverage

Macro base stationRemote coverage

Micro base stationIndoor coverage

Distributed base stationcoverage

circuitbearer networkcircuit

BBU+RRU System Overview





Content

ZXWR B8200 Hardware Structure

Network switching module (FS)

Power module (PM) Baseband processing board (BPC)

Fan module (FA)Control and clock module (CC)

Site alarm module (SA)


Mechanical dimensions:

88.4×482.6×197mm (H×W×D)

Weight (full configuration): 8.75kg

Typical power consumption: 75W

Power supply: -48V DC

Temperature range: -15℃～ +50℃

Humidity range: 5% ～ 95%

2U

482.6mm

88.4mm

UL: 192CE

DL: 192CE

HSDPA: 43.2Mbps

HSUPA: 15Mbps

BPC processing

capability

Sector configurations:

WCDMA: 30CS

Baseband capacity: 960CE

Data processing capability:

HSDPA: 216Mbps

HSUPA: 75Mbps

Abis/Iub interface: 2*STM-1; 16*E1/T1; 2*FE/GE

Baseband RF interface: 12*1.25Gbps optical interface

Performance IndicesPerformance Indices

Physical IndicesPhysical Indices

Interface IndicesInterface Indices


FP processing

Baseband encoding/ decoding

processing

Baseband modulation/

demodulation

Baseband IQ switch

processing

RF unit

Transmission protocol

processing

Signaling processing Clock module

Operation/maintenance Power moduleExternal power input

ZXWR B8200 Hardware Structure--Cards

Power module (PM): -48VDC power module.

Site alarm board (SA): It provides

eight ways of E1/T1 interfaces,

RS485/232 interfaces,

eight dry contact interfaces (six input interfaces and two dual-

way interfaces).

Control and clock board (CC):

baseband unit controller management

provides self-adaptive Abis/Iub IP interface GE/FE (optical or

electrical interface).


Fiber switch board (FS): to switch IQ signals.

It supports six fiber interfaces

is used for connection with RRU or RSU module.

WCDMA baseband processing board (BPC):

It supports 6CS and uplink or downlink 192CE.

It also supports a 43.2Mbps downlink or 15Mbps uplink data

processing capability.


STM-1 network interface board (NIS): It provides two STM-1

interfaces.

Site alarm extension board (SE): As an extension board of SA, it

provides the same interfaces as the SA board does.

Control & Clock & Switch Board (CC)

Interface Name Description

ETH0 An Ethernet interface that is used between BBU and RNC or BSC. There are two types of ETH0 interfaces on the panel, that is, optical interface and electrical interface (10M/100M/1000M self-adaptive).

ETH1 It is used for BBU cascade, debugging or local maintenance. Ethernet electrical interface (10M/100M/1000M self-adaptive).

EXT An external communication interface that connects with external receivers. It mainly includes 485 and PP1S+/2M+ interfaces.

REF An SMA (F) interface that externally connects with GPS antenna.

Fiber Switch Board (FS)

Interface introduction: Tx0/Rx0 - Tx5/Rx5: It provides the optical interface that

connects with RRU. Board functions: It switches baseband I/Q data. It provides the interface between BBU and RRU.

Baseband processing board (BPC)

BPC fulfills the physical layer protocol and frame protocol specified by 3GPP. It performs such functions as downlink service

data encoding/multiplexing, rate matching, channel mapping, spread scrambling,power weighting, and channel synthesis.

It fulfills RAKE reception and channel decoding of uplink signals.

Baseband processing board (BPC)

It synchronizes radio links and processes transmission frames.

It measures the parameters required for power control and handover.

It has softer handover and diversity reception/transmission functions.

SA Panel Cables

Connect with E1/T1 cable

Connect with RS232 and

RS485 debugging serial

ports

Connect with dry contact signal

cable

Grounding

Connect with SA board panel

socket

Site Alarm Board (SA)

SA Board functions: It supports alarm control and speed control of up to nine fans. It provides signal monitoring and interface lightning protection

for the shelf at which it is located. It provides six input dry contact interfaces and two input/output

dry contact interfaces. It provides eight E1/T1 interfaces.






Content

R8840/RSU40 Hardware Structure

The R8840 is a high-power outdoor remote RF unit and the RSU40 is a high-power indoor RF module from ZTE.

R8840/R8860RSU40


The R8840 is a high-power outdoor remote RF unit and the RSU40 is a high-power indoor RF module from ZTE.

The R8840 and RSU40 mainly differ in the physical structure.

R RRU 8 WCDMA8 Outdoor 40 40 W


Small and light

36

0 m

m320 mm 165 mmZXSDR R8840: outdoor macro RRU

Sector configurations

1C1S to 4C1S

Transmit power: 40 W/60 W

Receive sensitivity

-129.2 dBm@dual antennas


Baseband RF interface: 2 x 1.25 GHz

optical interface


Dimensions: 370 mm x 320 mm x 160 mm

Weight: 16.5 Kg

Standard power consumption: 140 W

Power supply: -48 V DC, 220 V AC

Temperature range: -40oC to +55oC

Protection class: IP65


Transceiver Unit – RTR

Provides two receiving and one transmitting signal channels.

Amplifies and filters signals and coverts A/D and D/A Retrieves clock reference signals through the Ir

interface and provides clock reference for inner modules

Provides digital intermediate frequency, despiker, and digital predistortion (DPD)

Measures and reports RTWP and TSSI

Transceiver Unit – RTR

Measures and reports VSWR Self-checks and reports hardware failure Monitors the environment Provides tow CPRI ports Inputs external alarms

Power Amplifier Unit – HPA

Amplifies RF signals Reports temperature Provides overcurrent, over temperature, overpower,

and over standing wave protections

Duplex Filter Unit – DFL

Provides transmission/reception combination and dividing/splitting functions for RF signals

Provides transmit/receive RF channel filtering Provides the low noise amplifier (LNA) function Provides transceiver unit with the LNA alarm

reporting function

Power Module – RPW

Power modules can be divided into AC and DC power modules, that is, RPW AC/DC. If AC power supply is used, the RPW AC is configured. If DC power supply is used, the RPW DC is configured. The RPW provides the following functions:

Coverts AC/DC power supply Provides the transceiver unit with undervoltage,

overvoltage, and overcurrent alarms

Ports on the R8840

ANT2Receiver diversity

RF cable port

ANT1Transmit/receive main set

RF cable port

RxInfrequency point extension port

RxOutfrequency point extension port

BBU and RRU portor

cascading RRU port

BBU and RRU portor

cascading RRU port

AISG portAntenna tuning port

Monitoring port Power portAC or DC

Grounding

Ports on the RSU40ANT2

Receiver diversityRF cable port

ANT1Transmit/receive main set

RF cable port

BBU与 RRU的接口

RRU级联接口

BBU and RRU portCascading RRU port

Commission network portRJ45

Frequency point extension port

Test port

Power supply port

External equipment monitoring portDB15 connector

AISG equipment portRET antenna port






Content

Indoor SDR Macro BTS in Dual Mode – ZXSDR BS8800

RF layerRF unit configuration

portRSU40

Cabling troughSupports in-cabinet cabling

PDMPower distribution

Fan moduleHeat dissipation unit

of the RF unit

Air ventilationHeat dissipation unit of

the RF unit

导风插箱射频单元散热处理

导风插箱射频单元散热处理

Baseband layerBaseband unit

configuration portB8200

BasebandUnit

Radio Unit Sector configurations:

WCDMA single mode: 30 CS

Baseband capacity: 960 CE

Transmit power: 60 W

Receive sensitivity



Iub interface

2 x STM-1; 16 x E1/T1; 2 x FE/GE



BasebandUnit

Radio Unit Dimensions950 mm x 600 mm x 450 mm

Weight (full configuration) 150kg

Typical power consumption 425 W in S1/1/1 configuration

Power supply -48 V DC


60 W HPA providing sufficient power and performance

40% HPA reducing power


Outdoor SDR Macro BTS in Dual Mode – ZXSDR BS8900

Sector configurations:

WCDMA single mode: 30 CS

Baseband capacity: 960 CE

Transmit power:60　 W

Receive sensitivity


Dimensions

1900 x 950 x 600mm

Outdoor SDR Macro BTS in Dual Mode – ZXSDR BS8900

Weight (full configuration): 410 kg

Typical power consumption: 565

W in S1/1/1 configuration Power supply: -48 V DC, 220 V AC

Standby batteries: 2 groups of

150 AH batteries

BS8700

馈线馈线Jumper (coaxial

Remote optical cable

BS8700

2U

48.26 cm

BBUBBU: : B8200B8200 RRURRU

R8840R8840

4 carriers

Transmit power: 40 W/60 W

Size: 19 L

Weight: 16.5 Kg






Content

Typical Networking Modes

Maximum levels of cascading: 4 Maximal transmission distance of each

level: 40 km Total maximum transmission distance: 10

0 km Maximum number of RRUs: 12

BBURRU RRU RRU RRU

Chain

RRU BBU RRU

RRU

Star

Node B Device Cable Connections

01 ZXSDR NodeB Structure and Principle_PPT-45

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