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ZXSDR BS8900A Description UR11.1

Product

ZXSDR BS8900A Product Description

ZXSDR BS8900A Product Description Version

V1.40

Date

2011-12-26

Author

Dong Chuanghong

Reviewer

Notes

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.

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ZXSDR BS8900A Product Description

TABLE OF CONTENTS

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1 1.1 1.2 1.3

Product Overview .............................................................................................. 7 Introduction ........................................................................................................ 7 Benefits .............................................................................................................. 8 Application Scenarios ....................................................................................... 9

2 2.1 2.2 2.2.1 2.2.2 2.2.3 2.2.4 2.3 2.4 2.4.1 2.4.2

Product Architecture ....................................................................................... 11 Physical Structure ........................................................................................... 11 Hardware Architecture..................................................................................... 12 Site Support Cabinet BC8910A ....................................................................... 12 Outdoor Radio Cabinet RC8910A ................................................................... 24 Outdoor Radio Cabinet RC8911A ................................................................... 29 Battery Cabinet PC8910A ................................................................................ 30 Software Architecture ...................................................................................... 30 Functionality .................................................................................................... 32 Basic Functions ............................................................................................... 32 Service Functions ............................................................................................ 32

3 3.1 3.2 3.2.1 3.2.2 3.2.3 3.2.4 3.3 3.3.1 3.3.2 3.4 3.5 3.6 3.7

Technical Specifications ................................................................................. 34 Physical Indices ............................................................................................... 34 Performance Indices ........................................................................................ 35 Operation Frequency Band ............................................................................. 35 Capacity Indices............................................................................................... 35 Receiver sensitivity ......................................................................................... 36 TOC Output Power ........................................................................................... 36 Power Indices ................................................................................................... 37 Power Supply ................................................................................................... 37 Power Consumption ........................................................................................ 37 Interface Indices............................................................................................... 38 Environment Indices ........................................................................................ 39 Electromagnetic Compatibility Indices........................................................... 40 Reliability Indices............................................................................................. 40

4 4.1 4.2 4.3 4.3.1 4.3.2 4.4

Configurations ................................................................................................. 41 Baseband Unit Configuration.......................................................................... 41 Radio Unit Configuration ................................................................................. 42 GSM Single Mode Configuration..................................................................... 42 RSU82 configuration ....................................................................................... 42 RSU60E Configuration..................................................................................... 43 UMTS Single Mode Configuration................................................................... 43

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4.4.1 4.4.2 4.4.3 4.5 4.5.1 4.5.2

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RSU82 configuration ....................................................................................... 43 RSU40 configuration ....................................................................................... 44 RSU60E configuration ..................................................................................... 44 GSM/UMTS Dual-Mode Configuration ............................................................ 45 GSM 850/900/1800/1900M and UMTS 850/900/1800/1900M Dual-Mode Network in Same Spectrum ............................................................................. 45 GSM 850/900/1800/1900M and UMTS2100M Dual-Mode Network with Different Spectrum ........................................................................................... 45 Abbreviation .................................................................................................... 47

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ZXSDR BS8900A Product Description

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 2-10 BPK Panel .....................................................................................................19 Figure 2-11 FS Panel........................................................................................................19 Figure 2-12 SA Panel .......................................................................................................20 Figure 2-13 SE Panel .......................................................................................................21 Figure 2-14 TAM Panel ....................................................................................................22 Figure 2-15 PM Panel .......................................................................................................23 Figure 2-16 FAM Panel ....................................................................................................24 Figure 2-17 Outdoor Radio Cabinet RC8910A ...............................................................25 Figure 2-18 Radio Unit RSU40/RSU60E of BS8900A .....................................................26 Figure 2-19 Radio Unit RSU82 of BS8900A ....................................................................28 Figure 2-20 Outdoor Radio Cabinet RC8911A ...............................................................30 Figure 2-21 Battery cabinet PC8910A .............................................................................30 Figure 2-22 BS8900A Software Structure .......................................................................31

TABLES

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ZXSDR BS8900A Product Description

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 .........................................................................................20 Table 2-5 SA Panel Interfaces .........................................................................................20 Table 2-6 SE Panel Interfaces .........................................................................................21 Table 2-7 TAM Panel Interface ........................................................................................22 Table 2-8 PM Panel Interfaces .........................................................................................23 Table 2-9 RSU40/RSU60E Interfaces Description ..........................................................27 Table 2-10 RSU82 Interfaces Description .......................................................................28 Table 2-11 RF Module Brief List ......................................................................................29 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 .....................................................................37 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) ........................................................................................................................38 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 ...................................................................................40 Table 3-14 BS8900A Reliability Indices (RSU82 Configured, AC Power Supply) ........40 Table 4-1 Baseband Unit Configuration .........................................................................41 Table 4-2 Radio Unit Configuration ................................................................................42 Table 4-3 BS8900A Configurations in GSM Mode with RSU82 .....................................43

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ZXSDR BS8900A Product Description

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

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ZXSDR BS8900A Product Description

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

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ZXSDR BS8900A Product Description

Complete Style

1.2

Standard Style

Compact Style

Benefits 

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. 

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. 

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. 

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. 

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Low Power Consumption

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ZXSDR BS8900A Product Description

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. 

IP RAN

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

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. 

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.

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ZXSDR BS8900A Product Description

Figure 1-2

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BS8900A Application Scenario

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ZXSDR BS8900A Product Description

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)

BC8910A

PC8910A

RC8910A

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ZXSDR BS8900A Product Description

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

Baseband

Antenn a

Baseband Unit Unit

Processin g

E1 STM-1

SA/ SE

CPRI RSU

CC

GE/FE

2.2.1

FS

Radio Unit Control Signaling Clock Data

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.

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ZXSDR BS8900A Product Description

Figure 2-3

Site Support Cabinet BC8910A (AC Power Supply)

Fan and Ventilation Vessel AC/DC Power System Heat Exchanger

B8200 Cable Chute Lightning Protection

Reserved space (f or transmission, etc.) Heater

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)

Fan and Ventilation Vessel DC Power Distribution B8200 Heat Exchanger

Cable Chute Lightning Protection

Reserved space (f or transmission, etc.)

2.2.1.1

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

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ZXSDR BS8900A Product Description

Figure 2-5

Baseband Unit of BS8900A Baseband

FS PM

Board

Processing FAM

SA CC 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 CC

Control & Clock Board

FS

Fabric Switch Board UBPG

2.2.1.1.1

Function Description

Universal Baseband Processing board for GSM

Baseband

UBPG

Processin

2

g Board

BPC

Base band Processing board type C for UMTS

BPK

Base band Processing board type K for UMTS

Interface

SA

Site Alarm Board

Board

SE

Site alarm Extension Board

Universal Baseband Processing board type 2 for GSM

TAM

Tower mounted Amplifier control Module

PM

Power Module

FAM

Fan Array Module

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.

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ZXSDR BS8900A Product Description

Figure 2-6

CC Panel

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

Table 2-2

CC Panel Interfaces

Interface Name ETH0

ETH1

Description Ethernet interface between BS8900A and RNC, adapting interface of 10M/100M/1000M. Ethernet interface used for cascading, debugging or local maintenance, adapting interface of 10M/100M/1000M. Used for Ethernet interface connection between BTS and

TX/RX

BSC/RNC. This interface is 100M/1000M Ethernet optical interface.

EXT REF

External communication port, connected to external receiver, Mainly 485 and PP1S+/2M+ interfaces. External connection GPS antenna, SMA(F) interface

Control & clock board functions are as follows: 

Ethernet switching function, implementing data switching for service and control flow within the system



Iub interface protocol processing



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



Managing software versions of boards and programmable components, and supporting local and remote software upgrade



Supervising the running status of each board within the system

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ZXSDR BS8900A Product Description



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.



Generating and delivering the clock signal demanded by each part



Providing GPS receiver interface and managing the GPS receiver



Providing a real-time clock for system operation and maintenance. The real-time clock can be calibrated.



Board power interface (-48V, -48V ground, protection ground, digital ground) with reverse connection protection function



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

2.2.1.1.2



Supporting primary/slave switchover



MicroTCA protocol based module management function

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

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UBPG Panel

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ZXSDR BS8900A Product Description

UBPG has the following functions: 

Achieving rate adaptation, channel coding, interleaving, encryption, generate TDMA shock burst, GMSK/8PSK modulation, IQ baseband digital signals output.



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. 

Radio link synchronization, transmission frame processing



Measuring parameters required in power control and handover



Diversified transmission and receiving



Communicating with CC via Ethernet interface



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

Table 2-3

UBPG2 Panel

UBPG2 Panel Interface

Interface Name

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Description

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ZXSDR BS8900A Product Description

TX0 RX0 – TX2 RX2 3.

3 pairs of optical interface that connects with RRU.

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: 

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

rate

adaptation,

channel

mapping,

spread

spectrum and scrambling power regulation and channel compositing. 

Achieving uplink baseband signal processing, including uplink data RAKE receiving, demodulator, transmitting the data to lub interface for processing.



Downlink data coding/multiplexing, rate matching, channel mapping, spreading and scrambling, power adjusting, and channel compositing.

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

Uplink signal RAKE receiving and channel decoding



Radio link synchronization and Frame processing



Measuring parameters required in power control and handover



Softer handover and carrier diversity.



Communicating with the CC via the Ethernet interface

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ZXSDR BS8900A Product Description



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

4.

BPK

BPK is another type of UMTS baseband processing board and its processing capacity is larger than BPC. BPK panel is illustrated in the following figure.

Figure 2-10

BPK Panel

Besides the same functions of BPC, BPK can provide additional HSPA+ functionalities:

2.2.1.1.3



Performing UL 16QAM, and the peak rate throughput can reach 11.5Mbps



Supporting A-RAKE receiving and UL interface cancellation

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 2-11

FS Panel

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

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ZXSDR BS8900A Product Description

Table 2-4

FS Panel Interfaces Interface Name

TX0 RX0 – TX5 RX5

Description 6 pairs optical interfaces, connected to RRU

The FS has the following functions: 

Receive the signal from the rear board in the downlink and retrieve the data and timing.

2.2.1.1.4



Multiplex the received data and retrieve I/Q signal



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



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



The multiplexed I/Q signal transmit to BP



Exchange CPU interface signaling through HDLC interface with RF module

Interface Board 1.

Site Alarm Board (SA)

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

Figure 2-12

SA Panel

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

Table 2-5

SA Panel Interfaces

Interface Name -

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Description 8 E1/T1 interfaces,

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ZXSDR BS8900A Product Description

Interface Name

Description 1 RS485, 1RS232 interface, 6+2 dry contacts (6 input interfaces, 2 bidirectional interfaces)

The SA has the following functions: 

Providing E1/T1 transmission interfaces for Abis/Iub.



Providing site alarm monitoring interfaces.



Providing FAM's alarm and rate control.



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 2-13

SE Panel

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

Table 2-6

SE Panel Interfaces

Interface Name -

Description 8 E1/T1 interfaces, 1 RS485, 1RS232 interface, 6+2 dry contacts (6 input interfaces, 2 bidirectional interfaces)

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ZXSDR BS8900A Product Description

SE board can provide the following functions:

2.2.1.1.5



Providing E1/T1 transmission interfaces for Abis/Iub.



Providing site alarm monitoring interfaces.

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 2-14

TAM Panel

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

Table 2-7

TAM Panel Interface

Interface Name

Description

TA0

DC output voltage channel 0

TA1

DC output voltage channel 1

TA2

DC output voltage channel 2

TA3

DC output voltage channel 3

TA4

DC output voltage channel 4

TA5

DC output voltage channel 5

The board provides the following functions: 

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

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ZXSDR BS8900A Product Description



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

2.2.1.1.6



Realizing the communication with CC board



Implementing conversion, protection and filtering of power supply



Providing anti-lightning for power supply circuit



Implementing software remote downloading and current threshold setting

Power Module (PM) PM is the power module, illustrated in the following figure.

Figure 2-15

PM Panel

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

Table 2-8

PM Panel Interfaces Interface Name

MON -48V/-48VRTN ON/OFF

Description Debugging interface, RS232 interface -48V input Power switch, turning on/off 12V power to/from BBU

The PM has the following functions: 

16 internal interfaces for +12 V load power;

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ZXSDR BS8900A Product Description

2.2.1.1.7



16 internal interfaces for +3.3 V management power;



EMMC management;



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



Output over-current protection and load power management.

Fan Array Module (FAM) FAM is fan array module which panel is illustrated in the following figure.

Figure 2-16

FAM Panel

The FAM main functions are as follows:

2.2.1.2



System temperature monitor and control;



Monitor, control, and report of fan state.

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.

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ZXSDR BS8900A Product Description

Figure 2-17

Outdoor Radio Cabinet RC8910A

Power Distribution Module RFAN Radio Module RSU

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.

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.

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ZXSDR BS8900A Product Description

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 2-18

Radio Unit RSU40/RSU60E of BS8900A

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

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Table 2-9

RSU40/RSU60E Interfaces Description

S.N. 1

Label

Interface

ANT2(RX)

Interface to receive diversity RF cable

Type/Connector 50 Ω DIN type connector

Interface to 2

ANT1(TX/RX)

transmit/receive main

50 Ω DIN type connector

diversity RF cable

2.2.2.3

Frequency extension

3

RXin

4

RXout

5

TX1 RX1

6

TX2 RX2

7

DBG

8

MON

9

AISG

AISG interface

B9 socket

10

POWER

Power supply interface

-48V DC input

interface Frequency extension interface

SMA connector

SMA connector

BBU and RSU Interface

LC-type optical interface

/RSU cascading interface

(IEC 874)

BBU and RSU Interface

LC-type optical interface

/RSU cascading interface

(IEC 874)

Debugging network interface External equipment interface

RJ45 socket

DB15 socket

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.

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ZXSDR BS8900A Product Description

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 2-19

Radio Unit RSU82 of BS8900A

The interfaces of RSU82 are described in the following table.

Table 2-10 S.N. 1

RSU82 Interfaces Description Label

ANT2(RX)

Interface Interface to receive diversity RF cable

Type/Connector 50 Ω DIN type connector

Interface to 2

ANT1(TX/RX)

transmit/receive main

50 Ω DIN type connector

diversity RF cable Interface to 3

ANT3(TR/RX)

transmit/receive main

50 Ω DIN type connector

diversity RF cable 4

ANT4(RX)

Interface to receive diversity RF cable BBU and RRU

5

TX1 RX1

Interface /RRU cascading interface

28

50 Ω DIN type connector

LC-mode optical interface (IEC 874)

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BBU and RRU 6

Interface /RRU

TX2 RX2

cascading interface Debugging network

7

DBG

8

MON

9

AISG

10

POWER

interface External equipment interface AISG interface Power supply interface

LC-mode optical interface (IEC 874)

RJ45 socket

DB15 socket B9 socket -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

2100M RSU40

1T2R

U

60W

AWS

RSU60E

850M

G/U

900M

G/U

1800M

G

1900M

G/U

900M

G/U

1800M

G

2100M

U

1T2R

80W

2*80W RSU82

2.2.3

2T4R

2*60W

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.

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ZXSDR BS8900A Product Description

Figure 2-20

Outdoor Radio Cabinet RC8911A

Power Distribution Module

Battery

RFAN Radio Module

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.

Figure 2-21

Battery cabinet PC8910A

Battery

2.3

Software Architecture The software system of BS8900A can be divided into operating support layer and application layer.

30

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ZXSDR BS8900A Product Description

Figure 2-22

BS8900A Software Structure

GSM Function

LMT NOP

SCS

UMTS Function

OAM

DB S

BR S

BRACS

OSS Sche.Timer Moni. CPP ExcepMem BBX File DBG OMC-B VOS

VxWorks Hardware (BSP) The operating support layer provides the functions of OSS, while OAM, DBS, BRS, BRACS, and SCS serve different BTS modes. 

OAM (Operating and Maintenance) is to provide the configuration, alarm and performance measurement function.



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



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



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



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.

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ZXSDR BS8900A Product Description

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 

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. 

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. 

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:

32

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ZXSDR BS8900A Product Description



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



UMTS R99 service, HSPA (DL 14.4Mbps/UL 5.76Mbps/), HSPA+ (DL 43.2Mbps/UL 11.5Mbps)



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



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



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



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



Supports BSS local switch, and the voice data frame will switch in BSS and will not go to core network



Several measures to make cell range extended up to 240 Km



Supports basic interworking between G/U and LTE network



Support full IP networking

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ZXSDR BS8900A Product Description

3

Technical Specifications

3.1

Physical Indices Table 3-1

BS8900A Physical Indices

Item

BC8910A

RC8910A

RC8911A

800*600*600

800*600*600

800*600*600

127Kg

93Kg

Weight of full

(RSU40,RSU6

(RSU40/RSU

configuration

0E)

60E)

139Kg

99Kg

(RSU82)

(RSU82)

PC8910A

Appearance

Dimension(H* W*D)

800*600*600

( mm*mm*mm)

94Kg

without battery

47Kg

277Kg Weight of full configuration

(RSU40/RSU N/A

N/A

with battery

60E)

415Kg

283 Kg (RSU82)

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

34

Complete Style

Standard Style

Compact Style

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ZXSDR BS8900A Product Description

Cabinet

BC8910A +

BC8910A+

Combination

RC8910A+ PC8910A

RC8910A

1600*(1200+100)*600

1600*600*600

BC8910A+RC8911A

Appearance

Dimension(H*W*D) ( mm*mm*mm)

1600*600*600

200Kg Weight of full

280Kg (RSU40,

(RSU40,

195Kg (RSU40,

configuration

RSU60E)

RSU60E)

RSU60E)

without battery

290Kg (RSU82)

210Kg

200Kg (RSU82)

(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

Frequency Band

3.2.2

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

Capacity Indices Table 3-4

BS8900A Capacity Indices Item (Single Cabinet)

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Indices

35

ZXSDR BS8900A Product Description

Maximum GSM TRX

60 TRXs

Maximum UMTS CS

30 CSs

Maximum GSM/UMTS dual-mode TRX

GSM 36 TRXs + UMTS 12 CSs 960 CEs UL/960 CEs DL (BPC)

Maximum CE

1536 CEs UL/1536 CEs DL (BPK) 75 Mbps UL / 300 Mbps DL (BPC)

Maximum data throughput

3.2.3

276 Mbps UL / 1000 Mbps DL (BPK)*

Receiver sensitivity Table 3-5

BS8900A Receiver Sensitivity Item

Indices -113.5dBm@GSM single antenna

Receiver sensitivity

-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

RSU40

60W

RSU60E

80W

RSU82

36

TOC Output Power

2*80W (900/1800MHz) 2*60W (2100MHz)

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ZXSDR BS8900A Product Description

3.3

Power Indices

3.3.1

Power Supply Table 3-7

BS8900A Power Supply Indices Item

Indices -48V DC (-57V DC–-40V DC) 220V AC (176V AC– 264V AC)

Power supply, voltage range of variation

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 Radio Module

S6/6/6

S12/12/12

Frequency

Average

Peak

Average

Peak

900M

665

1150

1115

2050

1800M

685

1190

1150

2130

850M/900M

670

1165

1275

2165

1800M/1900M

715

1225

1360

2285

RSU82

RSU60E

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ZXSDR BS8900A Product Description

3.3.2.2

UMTS Single Mode

Table 3-9

BS8900A UMTS Configuration Power Consumption (Unit: W, -48V DC,

20W/Carrier) Station Radio

S111

S222

S333

Frequency

Average

Peak

Average

Peak

Average

Peak

RSU40

2100M

400

605

475

785

615

975

RSU60E

850M/900M

460

665

535

795

635

1000

2100M

355

590

460

775

585

950

900M

515

745

615

875

700

1075

Module

RSU82

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)

3.4

Radio Module Name

Average

Peak

RSU60E (850M/900M)

755

1185

RSU82 (900M)

730

1185

Interface Indices Table 3-11

BS8900A Interface Indices

Interface

Item E1/T1

Indices 16 pairs(8pairs optional)

Type DB44

Standard ITU G.703/G.704

1 Abis/Iub

10M/100M/1000M Ethernet (either or)

electrical Auto-Negotiation.

10/100/1000BASE-T RJ45

IEEE 802.3 compatible

Auto-MDI/MDIX

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ZXSDR BS8900A Product Description

1000BASE-LX IEEE 1 1000M optical

SFP

802.3 compatible

Or 1 100M optical

(LC)

100BASE-FX IEEE 802.3 compatible

STM-1

2 pairs(optional)

SFP

ITU G.957

(LC)

ITU G.707

1 Cascading,

10M/100M/1000M

Debugging or

Ethernet

Local

electrical

10/100/1000BASE-T RJ45

Auto-Negotiation.

Maintenance

IEEE 802.3 compatible

Auto-MDI/MDIX

3.5

Baseband/Radio

CPRI

12 pairs

Clock

GPS

1

SFP (LC) SMA

CPRI 2.0 GPS TX/RX Port NMEA 0183 V3.0

Environment Indices Table 3-12

BS8900A Working Environment Indices Item

Temperature

Indices

-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

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ZXSDR BS8900A Product Description

3.6

Electromagnetic Compatibility Indices Table 3-13

BS8900A EMC Indices Item

Indices Capable of protecting against the contact

Anti-static protection

discharge of ±6000V, Air discharge of ±8000V.

Surge anti-interference requirement

3.7

±2000V between lines and the ground.

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

40

Indices

MTBF

≥134,000 hours

MTTR

0.5 hours

Availability index:

≥99.999627%

Down duration