ZTE_ZXSDR BS8900A Product Discription

ZXSDR BS8900A Product Description UR11.1

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ZXSDR BS8900A Product Description

ZXSDR BS8900A Product Description Version Date Author Reviewer Notes

V1.40 2011-12-26 Dong Chuanghong Not open to the Third Party

© 2011 ZTE Corporation. All rights reserved.

ZTE CONFIDENTIAL: This document contains proprietary information of ZTE and is not to be disclosed or used

without the prior written permission of ZTE.

Due to update and improvement of ZTE products and technologies, information in this document is subjected to

change without notice.





TABLE OF CONTENTS

1 Product Overview ............................................................................................... 7

1.1 Introduction ........................................................................................................... 7

1.2 Benefits ................................................................................................................ 8

1.3 Application Scenarios ........................................................................................... 9

2 Product Architecture........................................................................................ 11

2.1 Physical Structure ............................................................................................... 11

2.2 Hardware Architecture ........................................................................................ 12

2.2.1 Site Support Cabinet BC8910A........................................................................... 12

2.2.2 Outdoor Radio Cabinet RC8910A ....................................................................... 24

2.2.3 Outdoor Radio Cabinet RC8911A ....................................................................... 29

2.2.4 Battery Cabinet PC8910A ................................................................................... 29

2.3 Software Architecture ......................................................................................... 30

2.4 Functionality ....................................................................................................... 31

2.4.1 Basic Functions .................................................................................................. 31

2.4.2 Service Functions ............................................................................................... 32

3 Technical Specifications ................................................................................. 34

3.1 Physical Indices .................................................................................................. 34

3.2 Performance Indices ........................................................................................... 35

3.2.1 Operation Frequency Band ................................................................................. 35

3.2.2 Capacity Indices ................................................................................................. 35

3.2.3 Receiver sensitivity ............................................................................................. 36

3.2.4 TOC Output Power ............................................................................................. 36

3.3 Power Indices ..................................................................................................... 36

3.3.1 Power Supply ..................................................................................................... 36

3.3.2 Power Consumption ........................................................................................... 37

3.4 Interface Indices ................................................................................................. 38

3.5 Environment Indices ........................................................................................... 39

3.6 Electromagnetic Compatibility Indices................................................................. 39

3.7 Reliability Indices ................................................................................................ 39

4 Configurations.................................................................................................. 41

4.1 Baseband Unit Configuration .............................................................................. 41

4.2 Radio Unit Configuration ..................................................................................... 42

4.3 GSM Single Mode Configuration ......................................................................... 42

4.3.1 RSU82 configuration ........................................................................................... 42

4.3.2 RSU60E Configuration ....................................................................................... 43

4.4 UMTS Single Mode Configuration ....................................................................... 43







4.4.3 RSU60E configuration ........................................................................................ 44

4.5 GSM/UMTS Dual-Mode Configuration ................................................................ 44

4.5.1 GSM 850/900/1800/1900M and UMTS 850/900/1800/1900M Dual-Mode Network in Same Spectrum ................................................................................ 45

4.5.2 GSM 850/900/1800/1900M and UMTS2100M Dual-Mode Network with Different Spectrum ............................................................................................................ 45

5 Abbreviation ..................................................................................................... 47





FIGURES

Figure 1-1 BS8900A Appearance ........................................................................................ 7

Figure 1-2 BS8900A Application Scenario ......................................................................... 10

Figure 2-1 BS8900A Physical Architecture (Complete Style) ............................................. 11

Figure 2-2 BS8900A Hardware Structure ........................................................................... 12

Figure 2-3 Site Support Cabinet BC8910A (AC Power Supply).......................................... 13

Figure 2-4 Site Support Cabinet BC8910A (DC Power Supply) ......................................... 13

Figure 2-5 Baseband Unit of BS8900A .............................................................................. 14

Figure 2-6 CC Panel .......................................................................................................... 15

Figure 2-7 UBPG Panel ..................................................................................................... 16

Figure 2-8 UBPG2 Panel ................................................................................................... 17

Figure 2-9 BPC Panel ........................................................................................................ 18

Figure 2-11 FS Panel......................................................................................................... 19

Figure 2-12 SA Panel ........................................................................................................ 20

Figure 2-13 SE Panel ........................................................................................................ 20

Figure 2-14 TAM Panel ...................................................................................................... 21

Figure 2-15 PM Panel ........................................................................................................ 22

Figure 2-16 FAM Panel ...................................................................................................... 23

Figure 2-17 Outdoor Radio Cabinet RC8910A ................................................................... 24

Figure 2-18 Radio Unit RSU40/RSU60E of BS8900A ........................................................ 26

Figure 2-19 Radio Unit RSU82 of BS8900A ...................................................................... 27

Figure 2-20 Outdoor Radio Cabinet RC8911A ................................................................... 29

Figure 2-21 Battery cabinet PC8910A ............................................................................... 30

Figure 2-22 BS8900A Software Structure .......................................................................... 30

TABLES





Table 2-1 Board List of Baseband Unit .............................................................................. 14

Table 2-2 CC Panel Interfaces ........................................................................................... 15

Table 2-3 UBPG2 Panel Interface...................................................................................... 17

Table 2-4 FS Panel Interfaces ........................................................................................... 19

Table 2-5 SA Panel Interfaces ........................................................................................... 20

Table 2-6 SE Panel Interfaces ........................................................................................... 21

Table 2-7 TAM Panel Interface .......................................................................................... 21

Table 2-8 PM Panel Interfaces .......................................................................................... 22

Table 2-9 RSU40/RSU60E Interfaces Description ............................................................. 26

Table 2-10 RSU82 Interfaces Description .......................................................................... 28

Table 2-11 RF Module Brief List ........................................................................................ 28

Table 3-1 BS8900A Physical Indices ................................................................................. 34

Table 3-2 Different Combination of BS8900A .................................................................... 34

Table 3-3 BS8900A Operation Frequency Band ................................................................ 35

Table 3-4 BS8900A Capacity Indices ................................................................................ 35

Table 3-5 BS8900A Receiver Sensitivity............................................................................ 36

Table 3-6 BS8900A Output Power ..................................................................................... 36

Table 3-7 BS8900A Power Supply Indices ........................................................................ 36

Table 3-8 BS8900A GSM Configuration Power Consumption List (Unit: W, -48V DC, 13W/TRX) ............................................................................................................................ 37

Table 3-9 BS8900A UMTS Configuration Power Consumption (Unit: W, -48V DC, 20W/Carrier) ........................................................................................................................ 37

Table 3-10 BS8900A G/U Dual-mode Configuration Power Consumption (Unit: W, -48V DC, 20W/TRX, 20W/Carrier) ....................................................................................................... 38

Table 3-11 BS8900A Interface Indices .............................................................................. 38

Table 3-12 BS8900A Working Environment Indices........................................................... 39

Table 3-13 BS8900A EMC Indices .................................................................................... 39

Table 3-14 BS8900A Reliability Indices (RSU82 Configured, AC Power Supply) ............... 39

Table 4-1 Baseband Unit Configuration ............................................................................. 41

Table 4-2 Radio Unit Configuration .................................................................................... 42

Table 4-3 BS8900A Configurations in GSM Mode with RSU82 ......................................... 42





Table 4-4 BS8900A Configurations in GSM Mode with RSU60E ....................................... 43

Table 4-5 BS8900A Configurations in UMTS Mode with RSU82 ....................................... 43

Table 4-6 BS8900A Configurations in UMTS Mode with RSU40 ....................................... 44

Table 4-7 BS8900A Configurations in UMTS Mode with RSU60E ..................................... 44

Table 4-8 BS8900A Configurations in G/U Dual-Mode (850M/900M) ................................ 45

Table 4-9 BS8900A Configurations in G/U Dual-Mode (900MHz) ...................................... 45

Table 4-10 BS8900A Configuration on G/U Dual-Mode (Different Spectrum) .................... 45

Table 4-11 BS8900A Configuration on G/U Dual-Mode (Different Spectrum) .................... 46





1 Product Overview

1.1 Introduction

With the multi-mode era coming, ZTE, who is dedicated to providing comprehensive

network solutions and delivering the future-oriented quality network for the operators,

developed the ground breaking SDR unified platform with the essential feature to support

multi-mode and multi-band radio access.

Based on this innovative SDR platform, ZTE promotes a series of base stations to satisfy

different scenario requirements, including Indoor Macro, Outdoor Macro, Distributed,

Outdoor Micro, and Mini BTS.

These SDR-based serial base stations aim to design a unified network which can bring

seamless experience to operators. In GSM, UMTS or mixed mode, it enables operators

to save CAPEX and OPEX significantly because they only need to deploy a Uni-Radio

Access Network, compared to the independent GSM and UMTS networks.

ZXSDR BS8900A is one outdoor macro BTS, providing an all in one solution for power

supply, battery, and transmission integration. It offers GSM/UMTS dual-mode networking

capability and provides a future-proof solution for smooth evolution to Enhanced EDGE,

HSPA+ and LTE. BS8900A’s appearance is shown in Figure 1-1. In the following

chapters, a general description will be given to ZXSDR BS8900A (hereafter referred as

“BS8900A”).

Figure 1-1 BS8900A Appearance

Compact Style Standard Style Complete Style





1.2 Benefits

l Easy Installation, Fast Deployment

Four basic cabinets of BS8900A can be combined flexibly to cater for different scenarios.

Auxiliary equipments, including transmission, battery and power supply, are integrated

into the cabinet to provide a full functional outdoor base station solution. Front wiring

design enables installation against wall and convenient maintenance. Least footprint

requirement relieves the operator from bothering by the site acquisition problem.

l Large Capacity, Easy Expansion

ZXSDR BS8900A can accommodate several kinds of multi-carrier RSUs, including 1T2R,

2T4R RF modules. The 2T4R Radio Unit (RSU82) has the capability to support 2*6 GSM

TRXs or 2*3 UMTS carriers. Expansion is achieved through software configuration.

l Flexible GSM/UMTS Dual Mode Networking

ZXSDR BS8900A meets GSM/UMTS dual mode networking requirements in different

scenarios. It supports GSM 900M +GSM 1800 dual band networking, and UMTS 900M

can be realized in the same hardware with corresponding software upgrade. When GSM

is configured initially, UMTS 2100M can be supported by adding new RF units.

l Smooth Evolution

ZXSDR BS8900A software and hardware support full-feature EDGE and UMTS/HSPA

and satisfy operators’ future needs for data services. With software upgrade it is easy to

realize the evolution to EDGE+ and HSPA+. Even in the LTE phase, through minimal

change, ZXSDR BS8900A can support LTE functionality.

l Low Power Consumption

The PA efficiency achieves up to 50% with ZTE patent Doherty + DPD + D-PT

technology. Power consumption can be greatly decreased together with several

energy-saving features.

l IP RAN





ZXSDR BS8900A fully supports IP RAN and provides GE/FE or IPoverE1 for Abis/Iub

interfaces.

l Adaptable to Transmission Networks

BS8900A provides E1/T1, and GE/FE interfaces for Abis/Iub connection and supports

various transmission networking schemes such as SDH network, IP networking and

splitting transmission.

l Adaptable to Tough Environments

Outdoor Macro BTS BS8900A adopts hermetic rack. It is water proof, dust proof, EMC

compatible to suit the outdoor application scenarios. BS8900A provides IP55 protection

capability, -40–55°C working temperature, and C class lightning protection. BS8900A

can provide a fast deployment, low cost and equipment room free solution in tough

environments.

1.3 Application Scenarios

BS8900A develops a new solution for GSM/UMTS integrated network and network

evolution. BS8900A can be applied in dense urban, urban, suburban, rural area, highway

or outdoor environment. Furthermore it can fully meet operators’ requirements in different

stages and scenarios. BS8900A can be some combination of 4 basic cabinets and be a

flexible and customized solution for outdoor application scenario. With IP55 protection

capability and -40–55°C working temperature, BS8900A can be used in tough

environments. Figure 1-2 shows the application scenario of BS8900A.





Figure 1-2 BS8900A Application Scenario





2 Product Architecture

2.1 Physical Structure

BS8900A adopts standard 19 inches rack structure. It is composed of outdoor baseband

cabinet BC8910A, outdoor radio cabinet RC8910A, outdoor radio cabinet RC8911A, and

battery cabinet PC8910A. Typical configuration dimension of BS8900A is 1600mm *

600mm * 600mm (H*W*D). With the 200mm bottom base and 16mm top cover, the total

height reaches 1816mm.

Outdoor baseband cabinet is also called site support cabinet, including power distribution

shelf, fan shelf, baseband unit shelf, ventilation shelf, and additional space reserved for

transmission or other equipments. Outdoor RF cabinets are used for containing radio unit,

maximum supporting 6 RSUs. Battery cabinet supports maximum 2×150AH battery.

BS8900A complete style is shown in the following figure, consisting of one BC8910A,

one RC8910A and one PC8910A. BS8900A single rack supports up to 60 GSM TRXs or

30 UMTS CSs.

Figure 2-1 BS8900A Physical Architecture (Complete Style)

RC8910A

BC8910A

PC8910A





2.2 Hardware Architecture

BS8900A consists of two main parts: baseband unit and radio unit as shown in the

following figure.

Figure 2-2 BS8900A Hardware Structure

2.2.1 Site Support Cabinet BC8910A

There are mainly five parts in BC8910A: baseband unit, power supply system, power

distribution module, heat exchanging system and reserved space for transmission or

other equipments. Together with the fan and ventilation vessel, the heat exchanger

located in the cabinet door makes the heat exchanging system. BC8910A hardware

architecture is shown in the following figure.

Radio Unit

Baseband Unit

SA/ SE

CC

Baseband

Processing

FS

RSU

E1

GE/FE

Clock Data

Control Signaling

CPRI

Antenna

STM-1





Figure 2-3 Site Support Cabinet BC8910A (AC Power Supply)

In the case of DC power supply, AC/DC power system (5U) should be replaced by DC

power distribution with 2U in height.

Figure 2-4 Site Support Cabinet BC8910A (DC Power Supply)

2.2.1.1 Baseband Unit

Baseband unit in BS8900A is responsible for processing the baseband signals.

Heat Exchanger B8200

Fan and Ventilation Vessel

AC/DCPower System

Cable Chute

Heater

Reserved space (for transmission, etc.)

Lightning Protection

B8200

Fan and Ventilation Vessel

DC Power Distribution

Lightning ProtectionCable Chute

Reserved space (for transmission, etc.)

Heat Exchanger





Figure 2-5 Baseband Unit of BS8900A

The Baseband unit consists of control & clock board, fabric switch board, baseband

processing board, site alarm board (optional), site alarm extension board (optional),

Tower mounted Amplifier control Module (optional), power module, and fan module.

Table 2-1 Board List of Baseband Unit

Board Name Function Description

CC Control & Clock Board

FS Fabric Switch Board

Baseband Processing Board

UBPG Universal Baseband Processing board for GSM

UBPG2 Universal Baseband Processing board type 2 for GSM

BPC Base band Processing board type C for UMTS

Interface Board

SA Site Alarm Board

SE Site alarm Extension Board

TAM Tower mounted Amplifier control Module

PM Power Module

FAM Fan Array Module

2.2.1.1.1 Control & Clock Board (CC)

CC is control & clock board, used for control and management of baseband unit,

providing Ethernet and system clock. The CC panel is illustrated in the following figure.

Baseband Processing Board FS PM

SA

FAM

CC





Figure 2-6 CC Panel

Description of CC panel interfaces is shown in the following table.

Table 2-2 CC Panel Interfaces

Interface Name Description

ETH0 Ethernet interface between BS8900A and RNC, adapting interface of 10M/100M/1000M.

ETH1 Ethernet interface used for cascading, debugging or local maintenance, adapting interface of 10M/100M/1000M.

TX/RX Used for Ethernet interface connection between BTS and BSC/RNC. This interface is 100M/1000M Ethernet optical interface.

EXT External communication port, connected to external receiver,

Mainly 485 and PP1S+/2M+ interfaces.

REF External connection GPS antenna, SMA(F) interface

Control & clock board functions are as follows:

l Ethernet switching function, implementing data switching for service and control

flow within the system

l Iub interface protocol processing

l Monitoring, controlling and maintaining of the base station system, providing LMT

interface

l Managing software versions of boards and programmable components, and

supporting local and remote software upgrade

l Supervising the running status of each board within the system





l Synchronizing with various external reference clocks, including Abis/Iub interface

recovery clock, the GPS clock and the clock provided by BITS. CC can select one

according to the actual configuration.

l Generating and delivering the clock signal demanded by each part

l Providing GPS receiver interface and managing the GPS receiver

l Providing a real-time clock for system operation and maintenance. The real-time

clock can be calibrated.

l Board power interface (-48V, -48V ground, protection ground, digital ground) with

reverse connection protection function

l Reading various hardware management identifiers in the system, including the rack

number, backplane type number, slot number, board function type, board version,

and board function configuration mark

l Supporting primary/slave switchover

l MicroTCA protocol based module management function

2.2.1.1.2 Baseband Processing Board

There are 4 types of baseband processing board in order to meet different application

requirements:

1. UBPG

UBPG is the GSM baseband processing board. It processes the physical layer protocol

and frame protocol specified by 3GPP. UBPG panel is illustrated in the following figure.

Figure 2-7 UBPG Panel

UBPG has the following functions:





l Achieving rate adaptation, channel coding, interleaving, encryption, generate TDMA

shock burst, GMSK/8PSK modulation, IQ baseband digital signals output.

l Achieving uplink IQ data receiving, receiver diversity combiner, digital demodulation

(GMSK&8PSK, equilibrium), decryption, deinterleaving, demodulator, rate

adaptation, GE Ethernet interface transmit it to CC board for processing.

l Radio link synchronization, transmission frame processing

l Measuring parameters required in power control and handover

l Diversified transmission and receiving

l Communicating with CC via Ethernet interface

l Reading all the hardware management identifiers, including the backplane type

number, slot number, board function type, board version, board function

configuration identifier, and the CPU serial number.

2. UBPG2

UBPG2 is another type of GSM baseband processing board. It provides the same

functionalities as UBPG, and has 3 CPRI interface used for RRU remote connection. The

figure below shows the UBPG2 panel.

Figure 2-8 UBPG2 Panel

Table 2-3 UBPG2 Panel Interface


TX0 RX0 – TX2 RX2 3 pairs of optical interface that connects with RRU.

3. BPC





BPC is the UMTS baseband processing board. It processes the physical layer protocol

and frame protocol specified by 3GPP. BPC panel is illustrated in the following figure.

Figure 2-9 BPC Panel

It provides the following functions:

l Achieving downlink baseband signal processing, including downlink data coding,

multiplexing, rate adaptation, channel mapping, spread spectrum and

scrambling power regulation and channel compositing.

l Achieving uplink baseband signal processing, including uplink data RAKE receiving,

demodulator, transmitting the data to lub interface for processing.

l Downlink data coding/multiplexing, rate matching, channel mapping, spreading and

scrambling, power adjusting, and channel compositing.

l Uplink signal RAKE receiving and channel decoding

l Radio link synchronization and Frame processing

l Measuring parameters required in power control and handover

l Softer handover and carrier diversity.

l Communicating with the CC via the Ethernet interface

l Reading all the hardware management identifiers, including the backplane type

number, slot number, board function type, board version, board function

configuration identifier, and the CPU serial number





2.2.1.1.3 Fabric Switch Board (FS)

FS is fabric switch board which provides baseband optical interface between BBU and

RRU and processes the IQ signal. FS panel is illustrated in the following figure.

Figure 2-10 FS Panel

Description of FS panel interfaces is shown in the following table.

Table 2-4 FS Panel Interfaces


TX0 RX0 – TX5 RX5 6 pairs optical interfaces, connected to RRU

The FS has the following functions:

l Receive the signal from the rear board in the downlink and retrieve the data and

timing.

l Multiplex the received data and retrieve I/Q signal

l I/Q mapping in the downlink and multiplex I/Q signal to the optical signals.

l Receive the I/Q in uplink and demultiplex/mapping into I/Q signal

l The multiplexed I/Q signal transmit to BP

l Exchange CPU interface signaling through HDLC interface with RF module

2.2.1.1.4 Interface Board

1. Site Alarm Board (SA)

SA/SE is a site alarm board, illustrated in the following figure.





Figure 2-11 SA Panel

Description of SA panel interface is shown in the following table.

Table 2-5 SA Panel Interfaces


- 8 E1/T1 interfaces,

1 RS485,

1RS232 interface,

6+2 dry contacts (6 input interfaces, 2 bidirectional interfaces)

The SA has the following functions:

l Providing E1/T1 transmission interfaces for Abis/Iub.

l Providing site alarm monitoring interfaces.

l Providing FAM's alarm and rate control.

l Being responsible for the signal monitoring and interface lightning protection of its

shelf.

2. Site alarm Extension Board (SE)

SE is site alarm extension board, and shares the bottom-right slot with Baseband

processing board. It is used to extend the port number if SA cannot fulfill the

requirements. The SE panel is illustrated in the following figure.

Figure 2-12 SE Panel





Description of SE panel interfaces is shown in the following table.

Table 2-6 SE Panel Interfaces


- 8 E1/T1 interfaces,

1 RS485,

1RS232 interface,

6+2 dry contacts (6 input interfaces, 2 bidirectional interfaces)

SE board can provide the following functions:

l Providing E1/T1 transmission interfaces for Abis/Iub.

l Providing site alarm monitoring interfaces.

2.2.1.1.5 Tower mounted Amplifier control Module (TAM)

TAM is used for tower mounted amplifier control when TMA is needed. Panel of TAM is

shown as following figure.

Figure 2-13 TAM Panel

Description of the Interfaces on the TAM panel is shown in the table below.

Table 2-7 TAM Panel Interface


TA0 DC output voltage channel 0










The board provides the following functions:

l Working status detection of tower amplifier and reporting alarm signals to CC board

l Providing power on and off for tower amplifier with +28V, +12V or +13V power

supply

l Realizing the communication with CC board

l Implementing conversion, protection and filtering of power supply

l Providing anti-lightning for power supply circuit

l Implementing software remote downloading and current threshold setting

2.2.1.1.6 Power Module (PM)

PM is the power module, illustrated in the following figure.

Figure 2-14 PM Panel

Description of PM panel interface is shown in the following table.

Table 2-8 PM Panel Interfaces


MON Debugging interface, RS232 interface





-48V/-48VRTN -48V input

ON/OFF Power switch, turning on/off 12V power to/from BBU

The PM has the following functions:

l 16 internal interfaces for +12 V load power;

l 16 internal interfaces for +3.3 V management power;

l EMMC management;

l Measurement and protection of input over-voltage/under-voltage;

l Output over-current protection and load power management.

2.2.1.1.7 Fan Array Module (FAM)

FAM is fan array module which panel is illustrated in the following figure.

Figure 2-15 FAM Panel

The FAM main functions are as follows:

l System temperature monitor and control;

l Monitor, control, and report of fan state.





2.2.1.2 AC/DC Power System

The power system of BC8910A contains 4×30A AC/DC rectifiers. It is 5U in height. Its

configuration depends on the load and the backup battery capacity.

2.2.2 Outdoor Radio Cabinet RC8910A

RC8910A consists of 6 RF modules and fan control system. Its physical appearance is

shown in the following figure.

Figure 2-16 Outdoor Radio Cabinet RC8910A

Radio unit mainly processes the conversion between baseband signals and RF signals.

In BS8900A, there are three kinds of radio unit, respectively: RSU40, RSU60E, and

RSU82. RSU40 is a UMTS only radio frequency module, which works in UMTS only on

2100MHz/AWS. RSU60E is a multi-carrier radio frequency module, which can work in

GSM only, UMTS only or G/U dual mode via software configuration on

850/900/1800/1900MHz. RSU82 is a multi-carrier radio frequency module, which can

work in GSM only, UMTS only or G/U dual mode via software configuration and support 2

sectors on 900/1800/2100MHz or 1 sector with 2*2 MIMO in HSPA+ mode. The following

will show the details.

Radio ModuleRSU

RFAN

PowerDistributionModule





2.2.2.1 RSU40

RSU40 is UMTS multi-carrier radio unit, working on 2100M/AWS. RSU40 supports

maximum 4 carriers, and the output power is 60W.

RSU40 module consists of MCPA (multi-carrier power module) module, transceiver

module, and duplex filter LNA. There are one TX/RX port and one RX port for connecting

antennas.

2.2.2.2 RSU60E

RSU60E is a multi-carrier RF module, working on 850M/900M/1800M/1900M. It can be

configured as GSM only, UMTS only or dual mode module.

RSU60E maximum supports 6 TRXs in GSM mode. In case of GMSK modulation, 80W

TOC output power can be provided. If 8PSK is used, the TOC output power is 50W.

If RSU60E is used as UMTS mode, it maximum supports 4 carriers with 80W TOC output

power.

In dual modes, RSU60E maximum supports 4 GSM TRXs and 1 UMTS carrier or 2 GSM

TRXs and 2 UMTS carriers.

RSU60E module consists of MCPA module, transceiver module, and duplex filter LNA.

There are one TX/RX port and one RX port for connecting antennas.

The appearance of RSU40 is nearly the same as that of RSU60E, except the label, as

shown in the following figure.





Figure 2-17 Radio Unit RSU40/RSU60E of BS8900A

The interfaces of RSU40 are the same as those of RSU60E, as described in the following

table.

Table 2-9 RSU40/RSU60E Interfaces Description

S.N. Label Interface Type/Connector

1 ANT2(RX) Interface to receive diversity RF cable

50 Ω DIN type connector

2 ANT1(TX/RX) Interface to transmit/receive main diversity RF cable


3 RXin Frequency extension interface

SMA connector

4 RXout Frequency extension interface

SMA connector

5 TX1 RX1 BBU and RSU Interface /RSU cascading interface

LC-type optical interface (IEC 874)

6 TX2 RX2 BBU and RSU Interface /RSU cascading interface

LC-type optical interface (IEC 874)

7 DBG Debugging network interface

RJ45 socket

8 MON External equipment interface

DB15 socket

9 AISG AISG interface B9 socket

10 POWER Power supply interface -48V DC input





2.2.2.3 RSU82

RSU82 is a multi-carrier and multi-mode RF module, working on 900M/1800M/2100M.

One RSU82 can process 2-way transmitting and 4-way receiving, thus supporting 2

sectors in GSM/UMTS or 1 sector with 2*2 MIMO in HSPA+ mode. RSU82 can be

configured as GSM only, UMTS only or mixed mode.

In GSM mode, RSU82 supports maximum 2*4 TRXs with TOC output power 2*80W on

900MHz/1800MHz, or 2*6 TRXs with TOC output power 2*60W on 900MHz/1800MHz. In

case of GMSK modulation, the TOC output power reaches up to 2*80W, which falls back

to 2*50W if 8PSK is adopted.

In UMTS mode, it maximum supports 2*20MHz with TOC output power 2*80W on 900M

or 2*60W on 2100M.

In dual modes, RSU82 maximum supports 2*(4 TRXs + 1 carrier) or 2*(2 TRXs + 2

carriers).

RSU82 module consists of MCPA module, transceiver module, and duplex filter LNA.

There are two TX/RX port and two RX port for connecting antennas.

Figure 2-18 Radio Unit RSU82 of BS8900A

The interfaces of RSU82 are described in the following table.





Table 2-10 RSU82 Interfaces Description

S.N. Label Interface Type/Connector



2 ANT1(TX/RX) Interface to transmit/receive main diversity RF cable


3 ANT3(TR/RX) Interface to transmit/receive main diversity RF cable




5 TX1 RX1 BBU and RRU Interface /RRU cascading interface

LC-mode optical interface (IEC 874)

6 TX2 RX2 BBU and RRU Interface /RRU cascading interface

LC-mode optical interface (IEC 874)

7 DBG Debugging network interface

RJ45 socket

8 MON External equipment interface

DB15 socket

9 AISG AISG interface B9 socket

10 POWER Power supply interface -48V DC input

All the above RF modules can be inserted into BS8900A for different applications. The

following table gives a brief summary of all the RF modules.

Table 2-11 RF Module Brief List

Radio Tx/Rx Frequency (Hz) Mode TOC

RSU40 1T2R 2100M

U 60W AWS

RSU60E 1T2R

850M G/U

80W 900M G/U

1800M G





1900M G/U

RSU82 2T4R

900M G/U 2*80W

1800M G

2100M U 2*60W

2.2.3 Outdoor Radio Cabinet RC8911A

RC8911A accommodates 3 RF modules, 4 batteries and fan control subsystem. Its

physical appearance is shown in the following figure. RC8911A can be divided into left

and right part. In the right part 3 RSUs can be installed, and in the left part 4 batteries can

be arranged. The capacity of the 4 batteries is 150AH. For details of RF Modules please

refer to chapter 2.2.2.

Figure 2-19 Outdoor Radio Cabinet RC8911A

2.2.4 Battery Cabinet PC8910A

PC8910A is an outdoor battery cabinet, and it works with BC8910A and RC8910A. The

following figure shows the structure of PC8910A and it contains 8 batteries, with the

capacity of 2×150AH.

Radio Module

RFANBattery

PowerDistributionModule





Figure 2-20 Battery cabinet PC8910A

2.3 Software Architecture

The software system of BS8900A can be divided into operating support layer and

application layer.

Figure 2-21 BS8900A Software Structure

Battery

OSS

GSM Function UMTS Function

NOP

OMC-B

SCS OAM DBS BRACS BRS

VOS

Sche. Timer Moni. CPP Excep Mem BBX File DBG

Hardware

VxWorks

LMT





The operating support layer provides the functions of OSS, while OAM, DBS, BRS,

BRACS, and SCS serve different BTS modes.

l OAM (Operating and Maintenance) is to provide the configuration, alarm and

performance measurement function.

l DBS (Database Sub-system) is the database system.

l BRS (Bearer Sub-system) is for protocol stack processing.

l BRACS (Bearer Access Control Sub-system) is to control the access to bear layer.

l SCS (System Control Sub-system) is to control the power supplying and

active/standby switching.

OSS (Operation Support Sub-system) is the support layer in this entire framework, which

is a hardware platform for running software and provides basic functions like scheduling,

timer, memory management, communication, sequencing control, monitoring, alarming

and logging.

Board Support Package (BSP) is the software closely connected with the board

hardware and supports Real Time Operation Support Sub-system (RT OSS) to work on

the board.

2.4 Functionality

2.4.1 Basic Functions

Being compliant with 3GPP standards, including GSM Phase I/Phase II Phase II plus, as

well as UMTS R99/R4/R5/R6/R7/R8/R9, ZXSDR BS8900A supports G/U 900, G/U 850,

G 1800 and G/U 1900, UMTS 2100, even mixed installation of boards with different

frequencies in the same cabinet.

With Um/Uu, Abis/Iub and O&M interfaces, ZXSDR BS8900A accomplishes the following

basic functions





l With Um/Uu interface, the base station accomplishes UE access and radio link

transmission including RF processing, channel coding and decoding, channel

multiplexing and de-multiplexing, measuring and reporting, power control, transmit

diversity, receiving diversity, calibration and synchronization.

l with Abis/Iub interface, the base station connects with BSC/RNC and accomplishes

the following functions including cell management, reporting BS measurement

information, broadcasting system Information, implementing access control from

BSC/RNC, mobility management, radio resource management and controlling, FP

processing and ATM transmission management.

l With operating and maintenance interface, the base station provides system

management functions including configuration management, alarm management,

status checking and system monitoring.

2.4.2 Service Functions

Main service functions of ZXSDR BS8900A are listed as follows:

l GSM voice service (FR/EFR/HR/AMR/AMR-WB), GPRS, EDGE, EGPRS2-A of

E-EDGE

l UMTS R99 service, HSPA (DL 14.4Mbps/UL 5.76Mbps/), HSPA+ (DL 43.2Mbps/UL

11.5Mbps)

l MBMS service, including broadcast and multicast functions (PtP & PtM)

l Supports 64QAM, MIMO, DC, DC + 64QAM, MIMO + 64QAM for DL

l Supports 16QAM, A-RAKE technology, interference cancellation for UL

l Advanced energy-saving features, such as dynamic power sharing, intelligent Cell

shutdown

l Supports BSS local switch, and the voice data frame will switch in BSS and will not

go to core network

l Several measures to make cell range extended up to 240 Km





l Supports basic interworking between G/U and LTE network

l Support full IP networking





3 Technical Specifications

3.1 Physical Indices

Table 3-1 BS8900A Physical Indices

Item BC8910A RC8910A RC8911A PC8910A

Appearance

Dimension(H*W*D)

( mm*mm*mm)

800*600*600 800*600*600 800*600*600 800*600*600

Weight of full configuration without battery

94Kg

127Kg (RSU40,RSU60E)

139Kg (RSU82)

93Kg (RSU40/RSU60E) 99Kg (RSU82)

47Kg

Weight of full configuration with battery

N/A N/A

277Kg (RSU40/RSU60E) 283 Kg (RSU82)

415Kg

RF module N/A 6 RSUs 3*RSUs N/A

Battery N/A N/A 150AH 2×150AH

Note: 1. BS8900A has totally 4 basic cabinets. 2. The basic cabinets can be flexibly

combined together according to the actual application scenarios.

Table 3-2 Different Combination of BS8900A

Item Complete Style Standard

Style Compact Style





Cabinet Combination

BC8910A + RC8910A+ PC8910A

BC8910A+ RC8910A

BC8910A+RC8911A

Appearance

Dimension(H*W*D)

( mm*mm*mm) 1600*(1200+100)*600 1600*600*600 1600*600*600

Weight of full configuration without battery

280Kg (RSU40, RSU60E)

290Kg (RSU82)


210Kg (RSU82)


200Kg (RSU82)

RF Modules 6*RSUs 6*RSUs 3*RSUs

Power Supply AC+2×150AH DC AC+150AH

Note: Minimally 100mm interval between two cabinets standing on the ground is

reserved for wiring or maintenance in complete style.

3.2 Performance Indices

3.2.1 Operation Frequency Band

Table 3-3 BS8900A Operation Frequency Band

Item Indices

Frequency Band GSM: 850M/900M/1800M/1900M

UMTS: 850M/900M/1800/1900/2100M/AWS

3.2.2 Capacity Indices

Table 3-4 BS8900A Capacity Indices

Item (Single Cabinet) Indices





Maximum GSM TRX 60 TRXs

Maximum UMTS CS 30 CSs

Maximum GSM/UMTS dual-mode TRX GSM 36 TRXs + UMTS 12 CSs

Maximum CE 960 CEs UL/960 CEs DL (BPC)

Maximum data throughput 75 Mbps UL / 300 Mbps DL (BPC)

3.2.3 Receiver sensitivity

Table 3-5 BS8900A Receiver Sensitivity

Item Indices

Receiver sensitivity

-113.5dBm@GSM single antenna

-126.5dBm@UMTS single antenna

-129.2dBm@UMTS double antennas

-131.9dBm@UMTS four antennas

3.2.4 TOC Output Power

Table 3-6 BS8900A Output Power

Radio Unit Type TOC Output Power

RSU40 60W

RSU60E 80W

RSU82 2*80W (900/1800MHz)

2*60W (2100MHz)

3.3 Power Indices

3.3.1 Power Supply

Table 3-7 BS8900A Power Supply Indices

Item Indices





Power supply, voltage range of variation

-48V DC (-57V DC–-40V DC)

220V AC (176V AC– 264V AC)

380V AC (phase voltage as above)

Battery back-up Maximum 2×150AH

3.3.2 Power Consumption

3.3.2.1 GSM Single Mode

RSU82 is based on MCPA technology. It supports maximum 2*6 TRXs for GSM.

RSU60E is based on MCPA technology. It supports maximum 6 TRXs for GSM. In

baseband unit, one UBPG/UBPG2 board supports 12 GSM TRXs.

Table 3-8 BS8900A GSM Configuration Power Consumption List (Unit: W, -48V DC, 13W/TRX)

Station S6/6/6 S12/12/12

Radio Module Frequency Average Peak Average Peak

RSU82 900M 665 1150 1115 2050

1800M 685 1190 1150 2130

RSU60E 850M/900M 670 1165 1275 2165

1800M/1900M 715 1225 1360 2285

3.3.2.2 UMTS Single Mode

Table 3-9 BS8900A UMTS Configuration Power Consumption (Unit: W, -48V DC, 20W/Carrier)

Station S111 S222 S333

Radio Module

Frequency Average Peak Average Peak Average Peak

RSU40 2100M 400 605 475 785 615 975

RSU60E 850M/900M 460 665 535 795 635 1000

RSU82 2100M 355 590 460 775 585 950

900M 515 745 615 875 700 1075





3.3.2.3 GSM/UMTS Dual Mode

Table 3-10 BS8900A G/U Dual-mode Configuration Power Consumption (Unit: W, -48V DC, 20W/TRX, 20W/Carrier)

S444(G)+S111(U)

Radio Module Name Average Peak

RSU60E (850M/900M) 755 1185

RSU82 (900M) 730 1185

3.4 Interface Indices

Table 3-11 BS8900A Interface Indices

Interface Item Indices Type Standard

Abis/Iub

E1/T1 16 pairs(8pairs optional)

DB44 ITU G.703/G.704

Ethernet (either or)

1 10M/100M/1000M electrical

Auto-Negotiation.

Auto-MDI/MDIX

RJ45 10/100/1000BASE-T IEEE 802.3 compatible

1 1000M optical

Or 1 100M optical

SFP (LC)

1000BASE-LX IEEE 802.3 compatible

100BASE-FX IEEE 802.3 compatible

STM-1 2 pairs(optional) SFP (LC)

ITU G.957

ITU G.707

Cascading, Debugging or Local Maintenance

Ethernet

1 10M/100M/1000M electrical

Auto-Negotiation.

Auto-MDI/MDIX

RJ45 10/100/1000BASE-T IEEE 802.3 compatible

Baseband/Radio CPRI 12 pairs SFP (LC)

CPRI 2.0

Clock GPS 1 SMA GPS TX/RX Port

NMEA 0183 V3.0





3.5 Environment Indices

Table 3-12 BS8900A Working Environment Indices

Item Indices

Temperature -40–55°C (AC Power Supply)

-20–55°C (DC Power Supply)

Relative Humidity 5%–100%

Waterproof/Dustproof IP55

Ground ≤5Ω. Earth resistance can be less than 10Ω in thunderless area where there are less than 20 thunderstorm days in a year.

Mechanical vibration ETSI 300019-1-4 ClassM4.1

3.6 Electromagnetic Compatibility Indices

Table 3-13 BS8900A EMC Indices

Item Indices

Anti-static protection Capable of protecting against the contact discharge of ±6000V, Air discharge of ±8000V.

Surge anti-interference requirement ±2000V between lines and the ground.

3.7 Reliability Indices

In ZXSDR BS8900A, the algorithm of system reliability is based on the national military

GJB/Z299B Electronic Equipment Reliability Estimation Manual and US military

handbook MIL-HDBK-217F Electronic Equipment Reliability Estimation.

Table 3-14 BS8900A Reliability Indices (RSU82 Configured, AC Power Supply)

Item Indices

MTBF ≥134,000 hours





MTTR 0.5 hours

Availability index: ≥99.999627%

Down duration <1.961min/year





4 Configurations

4.1 Baseband Unit Configuration

B8200 is the baseband unit of BS8900A, B8200 is composed of these boards: CC,

baseband processing boards, FS, SA/SE, TAM, PM and FAM. Configuration principles of

these boards are described in the following table:

Table 4-1 Baseband Unit Configuration

Board Configuration Principles

CC At least 1 board is configured by default.

Maximum 2 boards can be configured for 1+1 backup.

Baseband

Processing

Board

UBPG 12 GSM TRXs/board.

Maximum 5 boards can be configured.

BPC

6 UMTS CSs/board, with 192CEs UL/192CEs DL simultaneously. 15Mbps UL and 60Mbps DL simultaneously.


FS

6 pairs of CPRI interfaces/board. At least 1 board is configured by default for UMTS mode or G/U dual modes.


Interface Board

SA 6+2 dry contacts and 8 pairs of E1/T1 per board.

It is configured by default.

SE

6+2 dry contacts and 8 pairs of E1/T1 per board.

It is configured only when the requirements of dry contacts or E1/T1 exceed SA capacity.

TAM

6 DC outputs with customized voltage per board.

It is configured for tower mounted amplifier control when TMA is needed.





PM At least 1 board is configured by default.

Maximum 2 boards can be configured for 1+1 backup.

FAM It is configured by default.

4.2 Radio Unit Configuration

BS8900A radio unit cabinet can be equipped with 6 RF modules, 6 RF modules are

corresponding to 6 sectors. Each of that can be configured as GSM or UMTS or

GSM/UMTS together by software. By choosing different frequencies and software

configuration, BS8900A can support various GSM/UMTS configurations:

Table 4-2 Radio Unit Configuration

RSU Configuration Principles

RSU40 Maximum 4 carriers in UMTS single mode.

RSU60E Maximum 6 TRXs in GSM or 4 carriers in UMTS single mode.

Maximum 4 TRXs+1 carrier or 2 TRXs+2 carriers in G/U dual mode.

RSU82

Maximum 2*6 TRXs in GSM single mode.

Maximum 2*3 carriers in UMTS single mode.

Maximum 2*(4 TRXs+1 carrier) or 2*(2 TRXs+2 carriers) in G/U dual mode.

4.3 GSM Single Mode Configuration

4.3.1 RSU82 configuration

RSU82 is based on MCPA technology. It supports maximum 2*6 TRXs for GSM. In

baseband unit, one UBPG/UBPG2 board supports 12 GSM TRXs.

Table 4-3 BS8900A Configurations in GSM Mode with RSU82

Site Type Number of RSU Number of

UBPG/UBPG2 Number of Rack

S6/6/6 2 2 1





S12/12/12 3 3 1

4.3.2 RSU60E Configuration

RSU60E is based on multi-carrier technology. In GSM mode, it maximum supports 6

TRXs. For baseband part, one UBPG/UBPG2 board can support 12 TRXs.

Table 4-4 BS8900A Configurations in GSM Mode with RSU60E

Site Type Number of RSU Number of

UBPG/UBPG2 Number of Rack

S4/4/4 3 1 1

S6/6/6 3 2 1

S12/12/12 6 3 1

4.4 UMTS Single Mode Configuration


One RSU82 supports maximum 2*3 carriers in UMTS single mode when ensuring 20W

per carrier. For baseband unit, one BPC can support UMTS 6CSs.

Table 4-5 BS8900A Configurations in UMTS Mode with RSU82

Site Type Number of RSU Number of BPC Number of Rack

S1/1/1 2 1 1

S2/2/2 2 1 1

S3/3/3 2 2 1

S4/4/4 3 2 1

S2/2/2/2/2/2 3 2 1






RSU40 maximum output power is 60W in UMTS 2100M.One RSU40 supports 3 carriers

when it ensures the 20W output power for each carrier. For baseband part, one BPC can

support 6 CSs.

Table 4-6 BS8900A Configurations in UMTS Mode with RSU40


S1/1/1 3 1 1

S2/2/2 3 1 1

S3/3/3 3 2 1

S4/4/4 6 2 1

S2/2/2/2/2/2 6 2 1

4.4.3 RSU60E configuration

RSU60E maximum output power is 80W in UMTS 850/900M. One RSU60E supports 4

carriers when it ensures the 20W output power for each carrier. For baseband part, one

BPC can support 6CSs.

Table 4-7 BS8900A Configurations in UMTS Mode with RSU60E


S1/1/1 3 1 1

S2/2/2 3 1 1

S3/3/3 3 2 1

S4/4/4 3 2 1

S2/2/2/2/2/2 6 2 1

4.5 GSM/UMTS Dual-Mode Configuration

There are two scenarios for GSM/UMTS dual-mode networking: GSM/UMTS dual mode

network in same spectrum; GSM/UMTS dual mode network with different spectrum





4.5.1 GSM 850/900/1800/1900M and UMTS 850/900/1800/1900M Dual-Mode Network in Same Spectrum

If one RSU60E is configured in this scenario, the configuration is shown in the following

table. One RSU60E supports 4 GSM TRXs + 1 UMTS carrier or 2 GSM TRXs + 2 UMTS

carriers simultaneously.

Table 4-8 BS8900A Configurations in G/U Dual-Mode (850M/900M)

Site Type Number of

RSU60E Number of

UBPG/UBPG2 Number of

BPC Number of

Rack

G:S444+U:S111 3 1 1 1

G:S222+U:S222 3 1 1 1

If the working frequency lies in 900MHz, RSU82 is adopted, with configuration shown in

the following table. One RSU82 supports 2*(4 GSM TRXs + 1 UMTS carrier) or 2*(2

GSM TRXs + 2 UMTS carriers) simultaneously.

Table 4-9 BS8900A Configurations in G/U Dual-Mode (900MHz)

Site Type Number of

RSU82 Number of

UBPG/UBPG2 Number of

BPC Number of

Rack

G:S888+U:S222 3 2 1 1

G:S444+U:S444 3 1 2 1

4.5.2 GSM 850/900/1800/1900M and UMTS2100M Dual-Mode Network with Different Spectrum

If RSU40 and RSU60E are configured simultaneously in this scenario, RSU40 is used for

UMTS2100MHz, and RSU60E is used for GSM850/900/1800/1900MHz.

Wideband combiner is needed in the mode of community feeder line and community

antenna.

Table 4-10 BS8900A Configuration on G/U Dual-Mode (Different Spectrum)

Site Type Number of

RSU Number of

UBPG/UBPG2 Number of BPC

Number of Rack





G:S666(850/900/1800/1900M) +U:S333(2100M)

3 RSU60E-850/900/1800/1900M + 3 RSU40-2100M

2 2 1

If RSU82 is configured simultaneously in this scenario, the configuration is shown in the

following table.

Table 4-11 BS8900A Configuration on G/U Dual-Mode (Different Spectrum)

Typical Site Type Number of RSU Number of

UBPG/UBPG2

Number of BPC

Number of

Rack

G:S444(900/1800MHz) +U:S222(2100MHz)

2 RSU82-900/1800MHz + 2 RSU82-2100MHz

1 1 1





5 Abbreviation Abbreviations Full Characteristics

3GPP 3rd Generation Partnership Project

64QAM 64 grade Quadrature Amplitude Modulation

AGPS Assisted GPS

AMR Adaptive Multi Rate

BB Base Band

BBU Base Band processing Unit

BCCH Broadcast Control Channel

BITS Building Integrated Timing Supply

BPC Base band Processing type C for UMTS

BRACS Bearer Access Control Sub-system

BRS Bearer Sub-system

BSC Base Station Controller

BSP Board Support Package

BTS Base Transceiver Station

CAPEX CAPital EXpenditure

CC Control & Clock

CE Channel Element

CN Core Network

CORBA Common Object Request Broker Architecture

CPRI Common Public Radio Interface

CS Circuit Switch

CS Carrier Sector

DBS Data Base Sub-system

DL Down Link

DTX Discontinuous transmission

EDGE Enhanced Data rates for GSM Evolution

E-EDGE Enhanced EDGE

EFR Enhanced Full Rate





FAM Fan Array Module

FE Fast Ethernet

FP Frame Protocol

FR Full Rate

FS Fabric Switch

GE Gigabit Ethernet

GERAN GSM Edge Radio Access Network

GPS Global Positioning System

GSM Global System for Mobile communications

HR Half Rate

HSPA+ HSPA Evolution

LTE Long Term Evolution

MicroTCA Micro Telecommunications Computing Architecture

MIMO Multi Input Multi Output

MS/UE Mobile Station/User Equipment

MTBF Mean Time Between Failures

MTTR Mean Time To Recovery

NBAP Node B Application Part

OAM Operating And Maintenance

OPEX OPeration EXpenditure

OSS Operation Support Sub-system

PM Power Module

PS Packet Switch

PtM Point to Multi-point

PtP Point to Point

RF Radio Frequency

RNC Radio Network Controller

RRU Remote Radio Unit

RTT Round Trip Time

SA Site Alarm

SCS System Control Sub-system

SDH Synchronous Digital Hierarchy





SDR Software Defined Radio

SE Site Alarm Extension

TA Time Advance

TAM Tower mounted Amplifier control Module

TMA Tower Mounted Amplifier

TNS Transport Network Sub-system



UBPG2 Universal Baseband Processing board 2 for GSM

UL Up Link

USB Universal Serial Bus

UTRAN UMTS Terrestrial Radio Access Network

VxWorks Winder River provided OS

WCDMA Wideband Code Division Multiple Access

WiMAX Worldwide Interoperability for Microwave Access




Documents

ZTE_ZXSDR BS8900A Product Discription