04 geran bc-en-zxsdr bts structure and principle-1-training manual-201010

ZXSDR BTSStructure and Principle

ZTE UNIVERSITYZTE University, DameishaYanTian District, Shenzhen,P. R. China518083Tel: (86) 755 26778800Fax: (86) 755 26778999URL: http://ensupport.zte.com.cnE-mail: [email protected]

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Publishing Date (MONTH/DATE/YEAR) : 20091111

Content

SDR BTS Structure and Principle .................................. 1

1 SDR Overview............................................................ 21.1 SDR Definition ...................................................................... 2

1.2 SDR in ZTE IP RAN ................................................................ 2

1.3 SDR Functions....................................................................... 3

2 Different Types of SDR BTS ....................................... 72.1 BS8700 Introduction.............................................................. 7

2.1.1 Overall Appearance ....................................................... 7

2.1.2 Highlight Feature........................................................... 8

2.1.3 Technical Indices ........................................................... 8

2.2 BS8800 GU360 Introduction...................................................14

2.2.1 Overall Appearance ......................................................14

2.2.2 Highlight Feature..........................................................14

2.2.3 Cabinet Layout.............................................................16

2.2.4 Technical Indices ..........................................................20

2.3 BS8900 GU360 Introduction...................................................23

2.3.1 Cabinet Appearance......................................................23


2.3.3 Hardware Structure ......................................................32


2.4 BS8906 G060 Introduction.....................................................44

2.4.1 Physical Appearance .....................................................44


2.4.3 Hardware Structure ......................................................47


3 SDR Boards ............................................................. 573.1 Base Band Unit ....................................................................57

3.1.1 CC .............................................................................58

3.1.2 UBPG .........................................................................61

3.1.3 BPC............................................................................63

3.1.4 FS..............................................................................65

3.1.5 SA..............................................................................67

3.1.6 SE..............................................................................72

3.1.7 PM .............................................................................74

3.1.8 FA ..............................................................................76

3.2 Radio Unit ...........................................................................77

3.2.1 RSU60 ........................................................................77

4 SDR Principles ......................................................... 814.1 Hardware Architecture...........................................................81

4.2 Software Architecture............................................................81

4.3 Signal Flow..........................................................................83

4.3.1 System Service Signal Flow ...........................................83

4.3.2 System Control Signal Flow ...........................................84

4.3.3 System Clock Signal Flow .............................................84

4.4 Interface and Protocol ...........................................................84

4.4.1 Abis interface ..............................................................85

4.4.2 Um Interface ...............................................................87

4.4.3 Iub Interface ...............................................................89

4.4.4 Uu interface.................................................................91

5 SDR Configuration(BS8800 as Example) ................. 935.1 Configuration Principles .........................................................93

5.2 GSM Single Mode Configuration ..............................................94

5.3 UMTS Single Mode Configuration ............................................96

5.4 GSM/UMTS Dual Mode Configuration .......................................97

5.5 Typical Configurations .........................................................100

6 SDR Operation and Maintenance ............................1076.1 Maintenance Overview ........................................................107

6.2 Maintenance Functions ........................................................108

SDR BTS Structure andPrincipleAfter you have completed this course, you

will be able to:

>> Learn the SDR definition and functions

>> Learn the different types of ZTE SDRBTS

>> Lerarn the structure and principle ofSDR boards

>> Learn the work principle of SDR BTS

>> Learn the hardware configuration prin-ciple of SDR BTS

>> Leran the operation and maintenancemode of SDR BTS

Confidential and Proprietary Information of ZTE CORPORATION 1

ZXSDR BTS Structure and Principle

Chapter1 SDR Overview

After you have completed this chapter, you will know:

>> SDR Definition>> SDR in ZTE IP RAN>> SDR Functions

1.1 SDR DefinitionIndustrialDefinition

� Various technologies providing an efficient and comparativelyinexpensive solution to the problem of building multi-mode,multi-band, multi-functional mobile radio base stations can besummed up in term software defined radio (SDR).

� Definition: Sum of hardware and software technologies inwhich essential parts of operation can be reconfigured by theupgrading of its software.

ZTE Definition � GSM/WCDMA dual mode macro base station.

� BBU+RRU distributed structure.

� BBU adopts standard uTCA hardware platform, based on uni-fied SDR base station researching platform.

� GSM/WCDMA with same frequency have same radio unit, butdifferent baseband board.

1.2 SDR in ZTE IP RANA GSM/UMTS system consists of Base Station (BTS), Base StationController (BSC/RNC), Core Networks and MS/UE. The position ofSDR BTS as shown in Figure 1.

2 Confidential and Proprietary Information of ZTE CORPORATION

Chapter 1 SDR Overview

FIGURE 1 SDR POSITION IN ZTE IP RAN

SDR functions as the base station (BTS/Node B), forming theBase Station Subsystem (BSS) with the Base Station Controller(BSC/RNC).

1.3 SDR FunctionsServices Table 1 lists the services.

TABLE 1 SERVICES PROVIDED

Service Type Descriptions

FR: Full-rate voice service

EFR: Enhanced full-rate voice service

HR: Half-rate voice service

AMR: Adaptive multi-rate voice service

F9.6: 9.6 kbps full-rate data service

GSM/EDGE service

GPRS/EDGE: GPRS/EDGE packet data service

Positioning service Providing three kinds of positioning method:� Positioning by CellID� Positioning by CellID+RTT� Positioning by AGPS



Service Type Descriptions

R99 service CS domain: AMR voice service (supporting 8rates), CS 64 kbps service

PS domain: UL/DL 64 kbps, UL/DL 128 kbps,and UL/DL 384 kbps service

Concurrent service: CS domain (AMR 12.2kbps, CS 64 kbps) + PS domain (64 kbps, 128kbps, 384 kbps)

HSDPA service Supporting a maximum data rate of 14.4 Mbps

Supporting 15 code channels at most

Supporting HSDPA and R99 services ondifferent carriers

Supporting co-frequency handover,hetero-frequency handover, and handoverbetween HSDPA and R99

Supporting concurrent service

Supporting stream media service

HSUPA service Supporting a maximum data rate of 5.76 Mbps

MBMS service Supporting broadcast and multicast functions,supporting PtP and PtM modes

Supporting mobility management

Supporting MBMS service of stream type andbackground type

HSPA+ service Supporting downlink data rate of 43.2 Mbps

Supporting uplink data rate of 11.5 Mbps

Functions � Basic functions

With Um/Uu interface, it accomplishes UE access and RF linktransmission, including:

� RF signal processing

� Channel coding and decoding

� Channel multiplexing and de-multiplexing

� Measurement and reporting

� Power control

� Transmission diversity

� Receiving diversity

� Calibration

� Synchronization

With Abis/Iub interface, it connects with BSC/RNC and accom-plishes the following functions:

� Cell management

� Reporting BTS measurement information

� Broadcasting system messages


Chapter 1 SDR Overview

� Access control

� Mobility management

� Radio resource management

� RF signal processing

� Transmission management

With operating and maintenance interface, it performs systemmanagement, including:

� Configuration management

� Alarm management

� Status checking and monitoring

� Dual mode

Supporting GSM/EDGE and UMTS, each mode can work in-dependently. Supporting mixed installation of boards withdifferent frequencies in the same cabinet and mixed installa-tion of boards with the same frequency in the same cabinet.Through relevant baseband board configuration, softwareversion downloading, and background configuration, the GSMnetwork and UMTS network can be upgraded, changed over,or run simultaneously.

Supporting GSM Phase I/GSM Phase II/GSM Phase II + stan-dards.

Supporting UMTS R99, R4, R5, R6, R7.

� Frequency hopping

The Equipment supports GSM baseband frequency hopping andRF frequency hopping.

� Power control

The Equipment supports downlink carrier power control. InGSM/EDGE mode, it supports static 6-level power control anddynamic 15-level power control.

� Discontinuous Transmission (DTX)

The equipment supports DTX, which reduces the transmittingpower and the total signal interference level in the air.

� Modulation modes

According to modulation commands issued by the base stationcontroller, the equipment supports multiple modulation modesincluding GMSK, 8PSK, QPSK, and 16-QAM.

� Transmission diversity and receiving diversity

In GSM mode, the equipment supports downlink transmissiondiversity, two-way/four-way diversity reception. It also sup-ports the four-antenna IRC technology.

� IRC switch control

The equipment can enable and disable the interference-elim-inating function through software. After the function is dis-abled, the system can be recovered to the state before thedisabling operation is performed.

� IP Abis interface



IP function is supported at Abis interface.

� GPS all-network synchronization

The GPS module is embedded in the baseband unit. The GPSclock is taken as the standard clock source for the entire basestation to realize the GSM system all-network synchronization.

� Carrier license control

The equipment performs license control for multi-carrier-mod-ule carrier, which can be commissioned according to a singlecarrier.

� Electrical antenna

The equipment supports electrical antenna and Tower MountedAmplifier (TMA).

� Viterbi decoding algorithm

The receiving end supports the Viterbi decoding algorithm, in-creasing the system receiving sensitivity and channel decodingcapability.

� Co-BCCH technology

The Co-BCCH technology is supported. It is often applied indual-band cell. The dual-band cell means that carriers of twobands are supported in the same cell, and carriers of differentbands share the same BCCH.


Chapter2 Different Types of SDRBTS


>> Appearance, features and indices of B8200+R8860>> Appearance, features and indices of BS8800>> Appearance, features and indices of BS8900>> Appearance, features and indices of BS8906

2.1 BS8700 Introduction

2.1.1 Overall Appearance

System consists of the core BBU (B8200) and RRU (R8860).The combination of B8200 and R8860 is the dual-mode macrodistributed BTS, mainly used for outdoor and indoor G/U900/1800/850/1900M dual-mode coverage. The physical struc-ture of B8200+R8860 is shown in Figure 2

FIGURE 2 B8200+R8860 APPEARANCE



2.1.2 Highlight Feature

Compared with traditional BTS, B8200 and R8860 has followinghighlight features:

� Series RRUs, suitable for multi indoor and outdoor coveragescenarios.

� RRU - Compact Design, Light, Easy Installation

Plug-in design for B8200 shelf, 19 inch, 2U in height and 8.75kg in weight. It can be conveniently deployed on the wall, onthe ground, in the 19 inch rack, etc.

� RRU – Installed Near Antenna, Saving Feeder Loss, EnhancingCoverage

Series RRU can be remotely installed near the antenna systemto lower the feeder loss. The coverage gain can reach morethan 3dB compared with traditional macro NodeB.

� Shared Base-band Resources, Dynamic Traffic Adjustment

Suitable for traffic transferring dynamically or outburst areas,such as CBD, uptown or beauty spot, avoiding resources waste.

� Various Interfaces, Flexible Networking

ATM/IP dual protocol stacks, providing with various interfacessuch as E1/T1/E3/T3/STM-1/GE etc. It supports SDH network-ing, hybrid transmission and all-IP networking.

� G/U Dual Mode Configuration, Smoothly Evolve to Future Net-work

Supports GSM/GPRS/ EDGE/ Enhanced EDGE/UMTS/HSPA/H-SPA+ and fully satisfies future evolution to LTE.

� Multi-Carriers and Multi-Frequencies

R8860 supports up to 3 UMTS carriers or 6 GSM carriers insingle mode, 2 GSM + 2 UMTS carriers or 4 GSM+1 UMTScarriers in dual mode. R8860 also supports multi-frequencies,including 900MHz/1800MHz/850MHz/1900MHz.

2.1.3 Technical Indices

2.1.3.1 Performance Indices

Type Item Indices

R8860(60W): 900/1800 MHzWorkingFrequency R8860(80W):

900/1800/850/1900 MHz

MaxCarrier/Sector

24 CS (UMTSsingle mode)Capacity

PerformanceIndices


Chapter 2 Different Types of SDR BTS

Type Item Indices

3 Carriers(UMTS singlemode)Max

Carrier/TRX36 TRX (GSMsingle mode)

UL: 960 CEMax ChannelElement DL: 960 CE

Max Channels

Per Cell123

UL: 57.5 MbpsMaxThroughput

DL: 216 Mbps

RRU Type Output Power(TOC)

Output Power

R8860 60/80 W

-112 dBm@GSM Single Antenna

-126.5 dBm@UMTS SingleAntenna

ReceivingSensitivity

-129.2 dBm@UMTS 2 Antennae

2.1.3.2 Interface Indices

Interface Item Indices Type

STM-1 2 pairs(op-tional) SFP (LC)

E1/T1 16 pairs(8 pairsoptional) DB44

10M/100M/1000M electrical

Auto-Negotiation.

Auto-MDI/MDIX

RJ45

1 1000M optical

Abis/Iub

Ethernet

1 100M opticalSFP (LC)





Auto-Negotiation.

Cascading,Debuggingor LocalMaintenance

Ethernet

Auto-MDI/MDIX

RJ45

Baseband/Ra-dio CPRI 12 pairs SFP (LC)

Clock GPS 1 SMA

2.1.3.3 Physical Indices

Type Item Index

B8200: 88.4 * 482.6 * 197 mm (H* W * D)

DimensionR8860: 500 * 320 * 172 mm (H *W * D)

B8200: ≤ 8.75 Kg

PhysicalIndices

WeightR8860: ≤ 22.5 Kg

2.1.3.4 Power Indices

Type Item Index

B8200: -48V DC (-57V DC ~ -40 V DC)

Power Indices Power supply, voltagerange of variation

R8860: -48V DC (-35V DC ~ -60 V DC)

2.1.3.5 Power Consumption

Type Mode Configura-tion

TypicalPowerConsump-tion(60W/900M Hz)

TypicalPowerConsump-tion(80W/900 MHz)

B82006CS/1 BPC 80W 80W

B820012CS/2 BPC 115W 115W

B820018CS/3 BPC 145W 145W

B820024CS/4 BPC 180W 180W

UMTS SingleMode

Power Con-sumptionIndices






UMTS1C/TOC20W

170W 155W

UMTS2C/TOC40W

200W 185W

UMTS3C/TOC60W

225W 205W

UMTS4C/TOC80W

- 230W

B820012TRX/1UBPG

60W 60W

B820024TRX/2UBPG

75W 75W

B820036TRX/3UBPG

90W 90W

B820048TRX/4UBPG

105W 105W

B820060TRX/5UBPG

120W 120W

GSM/S1 300W 330W

GSM/S2 240W 250W

GSM/S3 220W 220W

GSM/S4 210W 210W

GSM/S5 205W 205W

GSM SingleMode

GSM/S6 200W 200W

6CS+12TR-X/1BPC+1UBPG

95W 95W

12CS+24T-RX/2BPC+2UBPG

145W 145W

GSM S1 + 1UMTS CS 265W 275W

G/U Dual-Mode









2.1.3.6 Environment Indices

Type Item Index

B8200:

Long-term: -15°C ~+50°C

Short-term: -35°C ~+60°C

R8860:

Long-term: -40°C ~+55°C

Temperature

Short-term: -40°C ~+60°C

B8200:

Long-term: 5% ~95%

Short-term: 5% ~100%

R8860:

Long-term: 5% ~100%

Relative Humidity

Short-term: 5% ~100%

B8200: IP20Waterproof/Dustproof

R8860: IP65

Ground ≤ 10 Ω

B8200:

Indoor packdepositing

Environment Indices

Storage



Type Item Index

Temperature: -45°C~ +70°C

Relative humidity:10% ~ 90%

R8860:

Indoor packdepositing

Temperature: -45°C~ 70°C

Relative humidity:5% ~ 98%

2.1.3.7 EMC Indices

Type Item Index

YD/T 1595.2-2007

ETSI EN 301 489-01ETSI EN 301489-23

ETSI EN 300 386–V1.3.2

(CISPR22) Class B

EMCIndices

National/Interna-tional Standard

Directive 1999/5/EC (R)

2.1.3.8 Reliability Indices

Type Item Index

B8200: ≥ 230,000 hoursMTBF

R8860: ≥ 180,000 hours

B8200: 0.5 hoursMTTR

R8860: 0.5 hours

B8200: ≥ 99.9997%Availability

R8860: ≥ 99.9997%

B8200: ≤ 1.143 minute/year

ReliabilityIndices

Down Duration

R8860: ≤ 1.460 minute/year



2.2 BS8800 GU360 Introduction

2.2.1 Overall Appearance

The BS8800 cabinet includes the primary cabinet and the auxiliarycabinet. The primary cabinet supports 36 GSM carriers. Whenthe number of carriers at a site exceeds 36, the capacity can beexpanded by adding secondary cabinet, and each auxiliary cabinetalso supports 36 GSM carriers.

Figure 3 shows the appearance of BS8800 cabinet.

FIGURE 3 BS8800 APPEARENCE

1. Auxiliary cabinet 2. Primary cabinet


BS8800 is one of multi-carrier, multi-mode indoor macro base sta-tion in ZXSDR BTS series. By applying advanced MicroTCA plat-form and SDR technology, BS8800 can support GPRS/EDGE/En-hanced EDGE/UMTS/HSPA and HSPA+ simultaneously. Its mainadvantage is that it can be configured to a GERAN BTS, or a UTRANNode B, or a G/W dual-mode BTS by software reconfiguration only.

BS8800 develops a new solution for GSM/UMTS integrated net-work and network evolution. It can be applied in dense urban,urban, suburban, rural area, highway or indoor environment; alsoit can fully meet operators’ requirements in different stages andscenarios. In addition, BS8800 can decrease the mobile networkconstruction and operation cost.



Smooth Evolution BS8800 software and hardware support full-feature EDGE andUMTS/HSPA and satisfy operators’future needs for data service.In the future evolution to EDGE+ and HSPA+, only softwareupgrade is needed.

The MicroTCA architecture supports up to 10Gbps data through-put. It enables BS8800 to be also capable for LTE application.

Easy Installation BS8800 Primary cabinet dimension: 950mm * 600mm * 450mm(H*W*D), auxiliary cabinet dimension: 700mm * 600mm *450mm (H*W*D). Front wiring design enables against wallinstallation and conveniently maintenance.

Evolution to IPRAN

BS8800 is developed based on the ZTE unified MicroTCA platform.Abis/Iub interfaces based on GE/FE or IPoverE1 are provided. IPRAN can be conveniently achieved.

Smooth Expansion Each BS8800 dual-mode Radio Unit has the capability to support 6GSM TRX or 3 UMTS carriers. If GSM and UMTS are configured atthe same time, each radio unit supports 3 GSM TRX plus 1 UMTScarrier or 2 GSM TRX plus 2 UMTS carrier.

Low PowerConsumption

BS8800 apply Doherty, DPD and MCPA technologies to power am-plifier module which improve PA efficiency.

With S666 GSM, BS8800 power consumption is 735W, and S222UMTS configuration, BS8800 power consumption is 600W – lessthan half of conventional macro base station.

Rich Interfaces BS8800 provides E1/T1, STM-1 and GE/FE interfaces for Abis/Iubconnection and supports various transmission networking such asSDH network, IP networking or splitting transmission.

Flexible Dual-mode Networking

BS8800 meets GSM/UMTS dual mode networking requirementsin different scenarios. BS8800 supports GSM900+GSM1800 dualband networking and zero TCO from 2G to 3G smooth evolution,which GSM900+UMTS900 can be supported with correspond soft-ware configuration. BS8800 also supports only GSM in the initialstage; UMTS 2100M can be supported by adding RU modules. Inthis way, GSM/UMTS co-existence can be realized perfectly.

� Network upgrade from GSM900 to GSM900+GSM1800

BS8800 supports 6 RU modules. Supposed that there are3 RU-900 modules in one cabinet originally, by adding 3RU-1800, GSM900+GSM1800 can be supported and thecapacity is GSM900 S666 plus GSM1800 S666 in one cabinet.

� Network upgrade from GSM900 to GSM900+UMTS2100

In network evolution, based on the existing GSM900 network,UMTS2100 network can be constructed by adding RU-2100modules and corresponding baseband resource. This is themost economic 2G to 3G evolution step in which main controlmodule, transmission module and power are shared.

� Network upgrade from GSM900/1800 to GSM900/1800+UMT-S900/1800

BS8800 can support SDR, designed to support UMTS, GSMor G/U with different software configuration in the same fre-quency range. So in this network evolution, only need addUMTS baseband process -board.



2.2.3 Cabinet Layout

BS8800 cabinet is categorized into primary cabinet and secondarycabinet. When the number of GSM carriers exceeds 36, the sec-ondary cabinet is configured. The cabinet layout is shown in Figure4.

FIGURE 4 BS8800 CABINET LAYOUT

1. Secondary cabinet2. RF layer3. Cable rack4. Power distribution subrack5. Fan subrack6. Ventilation space7. Primary cabinet8. RF layer9. Cable rack10. Power distribution subrack11. Fan subrack12. Ventilation subrack13. Baseband layer14. Baseband layer15. Ventilation space



Table 2 describes the cabinet layout.

TABLE 2 BS8800 CABINET LAYOUT

Cabinet Name Hei-ght

Amo-unt

Functions

RF layer 6 U 1 Used to configure the radio unit and process radiosignal transmission and receiving

Base-bandlayer

2 U 2 Used to configure the baseband unit and processbaseband data

Powerdistribu-tion sub-rack

1 U 1 Used for cabinet power distribution

Fansubrack

1 U 1 Used for radio unit heat dissipation

Ventila-tion sub-rack

2 U 1 Used for radio unit heat dissipation

Ventila-tion sub-rack

1 U - Used for baseband units heat dissipation

Primarycabinet

Cablerack

- - Used for cabling inside the cabinet

RF layer 6 U 1 Used to configure the radio unit and process radiosignal transmission and receiving

Powerdistribu-tion sub-rack

1 U 1 Used for cabinet power distribution

Fansubrack

1 U 1 Used for the secondary cabinet heat dissipation

Venti-lationspace

1.75 U - Used for the secondary cabinet heat dissipation

Secon-dary cab-inet

Cablerack

- - Used for cabling inside the cabinet

2.2.3.1 RF Layer

The RF layer is located on the top of the cabinet. It is used toconfigure RUs, as shown in Figure 5.



FIGURE 5 RF LAYER

1. RU

Based on the site type, you can configure RU60, RSU60, RU02, orRU40 in slots 1–6.

TABLE 3 RF LAYER DESCRIPTION

Board/Module Name Quantity

RU60 Multi-carrier RF unit 1~6

RSU60 Dual-mode multi-carrier RFunit

1~6

RU40 Single-mode multi-carrier RFunit

1~6

RU02 Dual-density RF unit 1~6

2.2.3.2 Baseband Layer

A maximum of two baseband layers can be configured, as shownin Figure 6.



FIGURE 6 BASEBAND LAYER

1. FS2. PM3. CC

4. SA5. UBPG/BPC6. FA

Table 4 shows the boards that can be configured in baseband lay-ers.

TABLE 4 BASEBAND LAYER DESCRIPTION

Board/Module Name Quantity

CC Main control board 2, in ac-tive/standby mode

UBPG/BPC GSM baseband processingboard/UMTS basebandprocessing board

1~5

FS Network switching board 2, in load sharingmode

SA On-site alarm board 1

PM Power module 2

FA Fan module 1

2.2.3.3 Subracks

� Power distribution subrack is used to distribute power to thecabinet. It is mandatory.

� Fan subrack and 2U ventilation subrack perform heat dissipa-tion for RUs. They are mandatory.

� 1U ventilation subrack performs heat dissipation for BBUs. Onebaseband layer needs one 1U ventilation subrack. A maximumof two ventilation subracks can be configured.

� Lightning protection subrack is used to protect the signals ledfrom external interfaces against lightning. It is optional.





Item Indices

Main cabinet dimension

(Height × Width × Depth)

950 × 600× 450 mm

Weight/Rack

Primary cabinet appearance

fully configured less than 150Kg

Auxiliary cabinet dimension

(Height × Width × Depth):

700 × 600 × 450 mm

Weight/Rack

Auxiliary cabinet appearance

fully configured less than 130Kg

Color Dark blue

2.2.4.2 Capacity Indices

Item Indices

Maximum UMTS TRX 24CS

Maximum GSM TRX Main cabinet support 36TRX(single RUsupport 6TRXfully configured maximum6 RU, capacity expansion to 60 TRX viaauxiliary cabinet.

Maximum GSM/UMTSdual-mode TRX

GSM 18 TRX + UMTS 4C3S

Maximum Pure tonechannel CE

Uplink960CEDownlink:960CE

Maximum cell channel 123

Maximum throughput 216Mbps




OperationFrequency Band

Item Indices

GSM: 850M/EGSM/900M/1800M/1900 MHzFrequency Band

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

Receiversensitivity

Item Indices

-113dBm@GSM single antenna

-126.5dBm@UMTS single antenna

-129.2dBm@UMTS double antennas

Receiver sensitivity

-131.9dBm@UMTS four antennas

TRX Output Power

Radio Unit Type TOC Output Power

RSU60(GSM) GMSK 80W/8PSK 50W

RSU60(UMTS) 80W

RSU60(G/U) 80W


PowerRequirements

Item Indices

Power supply, voltagerange of variation

-48V DC(-57 ~ -40VDC)

PowerConsumption

BS8800 GSM Configuration Power Consumption List (UnitW)

Station S6/6/6 S12/12/12

RadioModuleName

Fre-quency Average Peak Average Peak

RSU60850M/900M/1800M/1900M

725/755 1165/1205

1265/1310

2170/2250

BS8800 UMTS Configuration Power Consumption List (UnitW)



Sta-tion S111 S222 S333 S444

Ra-dioMod-uleNa-me

Frequ-ency

Ave-rage Peak Ave-

rage Peak Ave-rage Peak Ave-

rage Peak

RS-U60

850/900/1800/1900M

605 735 730 905 870 1065 970 127

0

BS8800 G/U Dual-mode Configuration Power Consumption (Unit:W)

S444(G)+S111(U)

Radio Module Name Average Peak

RSU60 800/845 1185/1230






Auto-Negotiation.

Auto-MDI/MDIX

RJ45

1 1000M optical

Abis/Iub

Ethernet



Auto-Negotiation.


Ethernet

Auto-MDI/MDIX

RJ45


Clock GPS 1 SMA



2.2.4.6 EMC Indices

Type Item Index

YD/T 1595.2-2007

ETSI EN 301 489-01ETSI EN 301489-23

ETSI EN 300 386–V1.3.2

(CISPR22) Class B

EMCIndices




Item Indices

MTBF ≥159,000 hours

MTTR 0.5 hours

Availability index: ≥99.999686%

Down duration <1.653 min/year

2.3 BS8900 GU360 Introduction

2.3.1 Cabinet Appearance

The following types of cabinets can be configured for the BS8900.

� BC8910: It is a site support cabinet used to accommodate apower supply system, a baseband pool unit, a heat exchangerand transmission equipment.

� RC8910: It is an outdoor RF cabinet used to accommodate RFunits.

� RC8911: It is an outdoor RF cabinet used to accommodate RFunits and storage batteries.

� RC8931: It is an outdoor RF cabinet used to accommodate RFunits and storage batteries.

� PC8910: It is a battery cabinet used to accommodate storagebatteries.

The cabinets BC8910, RC8910, RC8911 and PC8910 have thesame appearance and dimensions; while the cabinet RC8931 ishigher than them. Figure 7 shows the appearance of the cabinetsRC8931, BC8910 and RC8911.



FIGURE 7 APPEARANCE OF CABINETS

1. RC89312. BC8910

3. RC8911

� The maximum external dimensions of the cabinets BC8910,RC8910, RC8911 and PC8910 are: 600 mm (W)×600 mm(D)×850 mm (H). The maximum external dimensions of thesecabinets mounted with top and base are: 600 mm (W)×640mm (D)×1050 mm (H).

� The maximum external dimensions of the RC8931 cabinet are:350 mm (W)×640 mm (D)×1700 mm (H). The maximum ex-ternal demensions of the cabinet with top and base are: 350mm (W)×640 mm (D)×1900 mm (H).

You can install and configure the cabinets flexibly according to theactual capacity on site. The following illustrates some typical con-figurations and installation layout of the cabinets.



AC Configuration:BC8910+RC8911

FIGURE 8 AC CONFIGURATION: BC8910+RC8911

1. BC89102. RC8911



AC Configuration:BC8910+RC8911

+RC8931

FIGURE 9 AC CONFIGURATION: BC8910+RC8911+RC8931

1. RC89312. BC8910

3. RC8911

DC Configuration:BC8910+RC8910

It is unnecessary to configure a B121 power supply subrack in theBC8910 cabinet when the BS8900 is configured with DC powersupply.



FIGURE 10 STANDARD DC CONFIGURATION: BC8910+RC8910

1. BC8910 (DC)2. RC8910



DC Configuration:BC8910+2RC8910

FIGURE 11 DC CONFIGURATION: BC8910+2RC8910

1. BC8910 (DC)2. RC89103. RC8910



DC Configuration:BC8910+3RC8910

FIGURE 12 DC CONFIGURATION: BC8910+3RC8910

1. BC8910 (DC)2. RC8910

3. RC89104. RC8910

AC Configuration:BC8910+PC8910

+RRU

A BC8910 cabinet, a PC8910 cabinet and several RRUs can be com-bined to form a BS8900 base station with remote RF units. FiveRRUs can be used due to the PDM subrack with the lightning pro-tection function. The RRUs are connected to the BC8910 cabinetwith fiber optic cables.



FIGURE 13 AC CONFIGURATION: BC8910+PC8910+RRU

1. BC89102. PC89103. RRU



AC Configuration:BC8910+RC8910+RC8911+PC8910

FIGURE 14 AC CONFIGURATION: BC8910+RC8910+RC8911+PC8910

1. BC89102. RC8910

3. PC89104. RC8911


BS8900 is one of multi-carrier, multi-mode outdoor macro basestation in ZXSDR BTS series. By applying advanced MicroTCAplatform and SDR technology, BS8900 can directly supportGPRS/EDGE/Enhanced EDGE/UMTS/HSPA and HSPA+ simultane-ously. Its main advantage is that can be configured to a GERANBTS, or a UTRAN Node B, or a G/W dual-mode BTS by softwarereconfiguration only and no required to add any hardware.

BS8900 develops a new solution for GSM/UMTS integrated net-work and network evolution. It not only can be applied in dense ur-ban, urban, suburban, rural area, highway in outdoor environmentand can fully meet operators’ requirements in different stages andscenarios, but also decreases the mobile network construction andoperation cost.

Smooth Evolution BS8900 software and hardware support full-feature EDGE andUMTS/HSPA and satisfy operators’future needs for data service.In the future evolution to EDGE+ and HSPA+, only softwareupgrade is needed.

The MicroTCA architecture supports up to 10Gbps data through-put. It enables BS8900 to be also capable for LTE application.

Easy Installation BS8900 is developed based on the ZTE unified MicroTCA platform.Abis/Iub interfaces based on GE/FE or IPoverE1 are provided. IPRAN can be conveniently achieved.



Evolution to IPRAN

BS8800 is developed based on the ZTE unified MicroTCA platform.Abis/Iub interfaces based on GE/FE or IPoverE1 are provided. IPRAN can be conveniently achieved.

Smooth Expansion Each BS8900 dual-mode Radio Unit has the capability to support 6GSM TRX or 3 UMTS carriers. If GSM and UMTS are configured atthe same time, each radio unit supports 3 GSM TRX plus 1 UMTScarrier, or 2 GSM TRX plus 2 UMTS carriers as an example.


BS8900 apply Doherty, DPD and MCPA technologies to power am-plifier module which improve PA efficiency.

With S666 GSM, BS8900 mean power consumption is less than735W, and S222 UMTS configuration, BS8900 mean power con-sumption is less than 740W – only one third of conventional macrobase station.

Rich Interfaces BS8900 provides E1/T1, STM-1 and GE/FE interfaces for Abis/Iubconnection and supports various transmission networking such asSDH network, IP networking or splitting transmission.


BS8900 meets GSM/UMTS hybrid networking requirements in dif-ferent scenarios. BS8900 supports GSM900+GSM1800 hybrid net-working and zero TCO from 2G to 3G smooth evolution. It can beconfigured only to support GSM in the initial stage; UMTS 2100Mcan be supported by adding RU modules. In this way, GSM/UMTSco-existence can be realized perfectly. Also GSM900+UMTS900can be supported with correspond software configuration.


BS8900 supports 6 RU modules. Supposed that there are3 RU-900 modules in one cabinet originally, by adding 3RU-1800, GSM900+GSM1800 can be supported and thecapacity is GSM900 S666 plus GSM1800 S666 in one cabinet.


In network evolution, based on the existing GSM900 network,UMTS2100 network can be constructed by adding RU-2100modules and corresponding baseband resource. This is themost economic 2G to 3G evolution step in which main controlmodule, transmission module and power are shared.

� Network upgrade from GSM900/1800 to GSM900/1800+UMT-S900/1800

BS8900 can support SDR, designed to support UMTS, GSMor G/U with different software configuration in the same fre-quency range. So in this network evolution, only need addUMTS baseband process -board.

2.3.3 Hardware Structure

2.3.3.1 Cabinet Layout

BS8900 cabinet layout is as follows:



BC8910 (AC) FIGURE 15 BC8910–AC

1. Heat exchanger2. Reserved space

3. Baseband layer4. Power distribution subrack

Subrack Dimensions Quantity Main features

Baseband layer 2U 1 Configure BBUand processbaseband data

Powerdistributionsubrack

6U 1 ConfigureB121 powerand provideDC powerfor internalmodules withinthe cabinet

Heat exchanger 4U 1 Cabinet heatdissipation

Reserved space 6U 1 Accommodateother devicessuch astransmissiondevice,lightningprotectionsubrack, andcable tray.Dummy panel isnot required.



BC8910 (DC) FIGURE 16 BC8910–DC

1. Heat exchanger2. Reserved space3. Baseband layer

4. Lightning protection subrack5. Cabling rack6. Power distribution subrack


Baseband layer 2U 1 Configure BBUand processbaseband data


3U 1 PDM, todistributepower insidethe cabinet

Heat exchanger 4U 1 Cabinet heatdissipation

Reserved space 6U 1 Accommodateother devicessuch astransmissiondevice,lightningprotectionsubrack, andcable tray.Dummy panel isnot required.




Lightningprotectionsubrack

2U 1 Lightningprotection forinput/output E1and trunk nodesignals.

Cabling rack 1U 1 Cabling insidethe cabinet

RC8911 FIGURE 17 RC8911

1. Fan subrack2. Power distribution subrack3. RF unit

4. Storage battery5. Base


RF unit Dimensions ofeach RU: 482.6mm (H)×88mm (W)×360mm (D)

3 Transmit andreceive radiosignals

Fan subrack - 1 Heat dissipationfor RF unit




Storage battery Dimensions ofa battery: 288mm (H)×110mm (W)×550mm (D)

4 Backup battery,providingpower for theequipmentwhen theexternal poweris cut off


- 1 Distributepower forthe overallequipment


1. Fan subrack2. Power distribution subrack3. RF unit4. Breaker and surge arrester5. Base




1. Fan subrack2. Power distribution subrack3. RF unit4. Storage battery

5. Base







Storage battery Dimensions ofa battery: 288mm (H)×110mm (W)×550mm (D)

4 Backup battery,providingpower for theequipmentwhen theexternal poweris cut off



PC8910 FIGURE 20 PC8910

1. Storage battery 2. Base

Configure 8 batteries. The dimensions of each battery: 288 mm(H)×110 mm (W)×550 mm (D)





BS8900 Basic Structure Physical Indices.

Name BC8910 PC8910 RC8910 RC8911 RC8931

Dimen-sion(H*W*D)

( mm*m-m*mm)

850*600*600

850*600*600

850*600*600

850*600*600

1700*350*600

Weight offull con-figura-tion with-out bat-tery(Kg)

113 52 144 100 97

Notes Reserved6U inter-nal space,can bebuilt-inBBU,trans-missionequip-mentsand mi-crowaveetc.

2*135AH 6*RU 3*RU+135AH

3*RU+134AH

Different Combination of BS8900.

Type

AC Integra-tive Base-Station(Com-pact-Style)

AC Integra-tive Base-Station(Com-plete-Style)

DC Split Base-Station(Stand-ard-Style)

BC8910+RC8911

BC8910 +RC8911 +RC8931

BC8910 +RC8910

Weight

Fullconfigurationwithout battery:220Kg



Dimen-sion(H*W*D):

1700×600×600(mm)

1700×950×600(mm)

1700×1200×600(mm)




Item Indices

Maximum UMTS TRX 24CS

Maximum GSM TRX Support 36TRXsingle RU support6TRXfully configured maximum 6 RU.

Maximum GSM/UMTSdual-mode TRX

GSM 18 TRX + UMTS 4C3S

Maximum Pure tone channelCE

Uplink: 960CEDownlink: 960CE

Maximum cell channel 123

Maximum throughput 216Mbps



Item Indices

GSM: 850M/EGSM/900M/1800M/1900 MHzFrequency Band

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

Receiversensitivity

Item Indices

-113dBm@GSM single antenna

-126.5dBm@UMTS single antenna

-129.2dBm@UMTS double antennas

Receiver sensitivity

-131.9dBm@UMTS four antennas

TRX Output Power

Radio Unit Type TOC Output Power

RSU60(GSM) GMSK 80W/8PSK 50W

RSU60(UMTS) 80W

RSU60(G/U) 80W




PowerRequirements

Item Indices

Power supply, voltagerange of variation

-48V DC(-57 ~ -40VDC)

Battery back-up 2*135AH

PowerConsumption

BS8900 GSM Configuration Power Consumption List (UnitW)

Station S6/6/6 S12/12/12

RadioModuleName

Fre-quency Average Peak Average Peak

RSU60850M/900M/1800M/1900M

725 1300 1285 2395

BS8900 UMTS Configuration Power Consumption List (UnitW)

Sta-tion S111 S222 S333 S444

Ra-dioMod-uleNa-me

Frequ-ency

Ave-rage Peak Ave-

rage Peak Ave-rage Peak Ave-

rage Peak

RS-U60

850/900/1800/1900M

670 870 870 1005 970 117

01040

1340

BS8800 G/U Dual-mode Configuration Power Consumption (Unit:W)

S444(G)+S111(U)

Radio Module Name Average Peak

RSU60 800 1320








Auto-Negotiation.

Auto-MDI/MDIX

RJ45

1 1000M optical

Abis/Iub

Ethernet



Auto-Negotiation.


Ethernet

Auto-MDI/MDIX

RJ45


Clock GPS 1 SMA

2.3.4.6 Battery back-up

RC8931 and RC8911 support 135AH battery, PC8910 supports2*135AH battery. The actual configuration is flexibly based onthe user needs.

2.3.4.7 Build in Transmission Equipments

19-inch wide 4U high additional space is for the transmission andother equipments.

2.3.4.8 Environment Indices

Item Indices

Temperature -40~55°C(Can work for 2 hours in 55°C)

Relative Humidity 5%~100%

Waterproof/Dustproof IP55



Item Indices

Ground≤5 Ω;earth resistance can less 10 Ω inthunderless area which has thunderstormdays less than 20.

Indoor pack depositing

Temperature: -45°C~70°CStorage

Relative Humidity:10%~98%

2.3.4.9 EMC Indices

Type Item Index

YD/T 1595.2-2007

ETSI EN 301 489-01ETSI EN 301489-23

ETSI EN 300 386–V1.3.2

(CISPR22) Class B

EMCIndices




Item Indices


MTTR 0.5 hours

Availability index: ≥99.999686%

Down duration ≤1,653 min/year

2.4 BS8906 G060 Introduction

2.4.1 Physical Appearance

BS8906 appearance is shown in Figure 21.



FIGURE 21 BS8906 PHYSICAL APPEARANCE


BS8906 is one of multi-carrier, multi-mode outdoor micro basestation in ZXSDR BTS series. By applying advanced MicroTCA plat-form and SDR technology, BS8906 can support GPRS/ EDGE/ En-hanced EDGE and UMTS/ HSPA /HSPA+ simultaneously by soft-ware upgrade. BS8906 takes full consideration of the operators’demands and has powerful advantages.

Smooth Evolution � Generic BS platform

The BBU adopts a platform based on the future-proof B3G or4G design. Therefore, different standard systems can exist inone hardware platform or in one BS. This platform can helpoperators simplify operation management and combine manyBSs that are required to be invested into one multi-mode BS.Besides, the platform helps the operators flexibly select theevolution trend of the future network and allow the terminalusers experience network transparency and smooth evolutionas well.

� Adopts the advanced Micro Telecom Computing Architecture(MicroTCA)

The MicroTCA adopts the standard template, compact designand block architecture, which makes the operation more effec-tive and of higher performance-price ratio.

Compact Design � A single BTS can support 6 TRX for GSM.



� High integration, small size and light weight, easy for trans-portation and installation, thus saving labor cost and engineer-ing cost.

� Maintenance at front and leading-out at the bottom. All fansand lightning modules can be removed on site.

� Flexible installation modes: The whole system supportsground-mounted, post-mounted and wall-mounted installationmodes.

High Reliability � Capability against terrible outdoor environments. It helps op-erators deploy networks flexibly.

� Built-in transmission devices and C-level lightning protectionmodule to save the operator’s investment power and accelerateconstruction speed.

All-IP Architecture BS8906 is adopting IP switching. Abis interfaces based on GE/FEor IPoverE1 are provided. IP RAN can be conveniently achieved.

Smooth Expansion Each BS8906 Radio Unit (RSU60) has the capability to support 6GSM TRX. With external R8860, the maximal capability can be 60TRX in one site.


� BS8906 apply Doherty, DPD and MCPA technologies to poweramplifier module which improve PA efficiency.

� With S4 GSM configuration, BS8906 power consumption is300W900M 305W1800M –less than conventional microbasestation.

Rich Interfaces BS8906 provides E1/T1 and GE/FE interfaces for Abis/Iub connec-tion and supports various transmission networking such as SDHnetwork, IP networking or splitting transmission.


BS8906 meets GSM/UMTS hybrid networking requirements indifferent scenarios. With external R8860, BS8906 can supportsGSM900+GSM1800 hybrid networking. Also GSM900+UMTS900can be supported with correspond software upgrade.


BS8906 supports 1 RSU60 modules. By adding 2 R8860 GU906and 3 R8860 GU186, GSM900+GSM1800 can be supported andthe capacity is GSM900 S666 plus GSM1800 S666.


BS8906 can support SDR, designed to support UMTS, GSMor G/U with different software configuration in the same fre-quency range. So in this network evolution, only need to up-grade software and add UMTS baseband process -board.


In network evolution, based on the existing GSM900 network,UMTS2100 network can be constructed by adding R8840 andcorresponding baseband resource and software upgrade. Thisis the most economic 2G to 3G evolution step in which maincontrol module, transmission module and power are shared.



2.4.3 Hardware Structure

2.4.3.1 External Cabinet Structure

BS8906 is the outdoor micro-BTS system in distributed BTS archi-tecture. Figure 22 shows the cabinet appearance.

FIGURE 22 WHOLE CABINET STRUCTURE

The external dimensions of the cabinet is described as follows:

� Excluding the cover: 320 mm (W) X 600 mm (H) X 480 mm(D)

� Including the cover: 320 mm (W) X 650 mm (H) X 480 mm(D)

� BBU subrack: 210 mm (W) X 600 mm (H) × 480 mm (D)

� RSU subrack: 110 mm (W) X 600 mm (H) × 480 mm (D)

BS8906 structure includes BBU subrack and RSU subrack, asshown in Figure 23.



FIGURE 23 EXTERNAL BS8906 CABINET STRUCTURE

1. Cover2. BBU Subrack3. Heat Exchanger

4. Base (optional)5. RSU Subrack

2.4.3.2 Internal Cabinet Structure

Internal structure of BS8906 cabinet is shown in Figure 24.



FIGURE 24 INTERNAL STRUCTURE OF BS8906 CABINET

1. RSU Subrack2. BBU Subrack3. BBU module board4. APM+PSU subrack / DPM subrack

5. LPU subrack / transmission sub-rack / micro-wave subrack

6. FCE

RSU Subrack

RSU subrack for BS8906 can be located within the same cabinet asBBU subrack, or within a different cabinet. Size of RSU subrack:110 mm (W) X 600 mm (H) × 480 mm (D).

Figure 25 shows the structure of RSU subrack.



FIGURE 25 STRUCTURE OF RSU CABINET

BBU Subrack

Size of BS8906 BBU subrack: 210 mm (W) X 600 mm (H) × 480mm (D) (including heat exchanger). Figure 26 shows the structureof BBU subrack.



FIGURE 26 STRUCTURE OF BBU SUBRACK

1. BBU subrack2. APM+PSU subrack / DPM+DDF

subrack

3. LPU subrack / transmission sub-rack / micro-wave subrack

BBU Fan Box

There is fan box mounted at upper inlet in the cabinet, used toheat dissipation of BBU cabinet.

The structure of the fan box is shown in Figure 27.



FIGURE 27 STRUCTURE OF FAN BOX

Heater

You shall install the heater if the minimum temperature of BS8906working environment is lower than -10℃.When environment temperature is -40℃, the equipment can startwithin half an hour, and internal air temperature can reach -10℃.Size of the heater: 160 mm (W) X 175 mm (H). The structure ofheater is shown in Figure 28.

FIGURE 28 HEATER STRUCTURE

Heat Exchanger

BBU subrack does heat radiation by using heat exchanger. Heatexchanger is located at the rear of BBU subrack, with rear exhaustmode, as shown in Figure 29.



FIGURE 29 POSITION OF HEAT EXCHANGER

1. Position of Heat Exchanger

The size of heat exchanger core: 480 mm (H) X 165 mm (W) X138 mm (D).



Item Indices

650 × 320 × 480 (mm)Dimension (Height * Width *Depth)

650 × 210 × 480 (mm) (single BBU)

full configuration is less than 52Kg

Weight/Racksingle BBU configuration is less than33Kg

Color Gray


A single micro BS with two external RRUs supports S111 (60w perTRX) ~ S666 (10w per TRX) in GSM.



Item Indices

Maximum GSM TRX (BBU) 60TRX

Maximum GSM Carriers(RSU60)

6 TRX



Item Indices

Frequency Band GSM: EGSM/900/1800 MHz

Receiversensitivity

Item Indices

Receiver sensitivity -113dBm@GSM single antenna

TRX Output Power

Radio UnitType PA Output Power TOC Output Power

GSM GMSK 83W/ 8PSK 60W GMSK 80W/8PSK 50W


PowerRequirements

Item Indices

DC: -48 V; voltage fluctuation range: -37 V to-60 VPower supply,

voltage range ofvariation AC: 100-240 V; voltage fluctuation range: 90-290

V

PowerConsumption

Power Consumption List (-48 V DC Power Supply 20°C Operatingtemperature).

Frequency TypicalConfiguration

AverageValue Peak Value

900MHz 4TRX 300W 445W

1800MHz 4TRX 305W 460W

Power Consumption List (220 V ACPower Supply 20°C Operatingtemperature)



Frequency TypicalConfiguration

AverageValue Peak Value

900MHz 4TRX 330W 495W

1800MHz 4TRX 340W 510W

2.4.4.5 Envirnoment Indices

Item Requirement

Operatingtemperature -40°C to +50°C

Operating humidity 5%RH to 95%RH



E1/T1 8 pairs DB44


Auto-Negotiation.

Auto-MDI/MDIX

RJ45

1 1000M optical

AbisEthernet



ElectricalAntenna AISG 1 Iuant

Antenna Feeder ANT 2 DIN

Clock GPS 1 SMA

2 input &outputs

EnvironmentMonitoringInterface

Dry contact

6 inputs

DB25


Item Indices


MTTR 0.5 hours



Item Indices

Availability index ≥99.999603%

Down duration ≤2.086min/year

2.4.4.8 EMC Indices

Type Item Index

YD/T 1595.2-2007

ETSI EN 301 489-01ETSI EN 301489-23

ETSI EN 300 386–V1.3.2

(CISPR22) Class B

EMCIndices




Chapter3 SDR Boards


>> Base band unit boards>> Radio unit board

3.1 Base Band UnitBaseband unit is responsible for processing the baseband signals,which is illustrated in

FIGURE 30 BASEBAND UNIT STRUCTURE

The Baseband unit consists of control & clock board, fabric switchboard, baseband processing board, site alarm board (optional),power module, and fan module.

Description of Baseband unit boards is shown in Table 5.

TABLE 5 MAIN BOARD LIST OF BASEBAND UNIT

Board Description

CC Control & Clock Board

FS Fabric Switch Board

UBPG Universal Baseband Processing Board for GSM

SA Site Alarm Board

PM Power Module

FAM FAN Module



3.1.1 CC

3.1.1.1 CC Functions

CC provides the following functions:

� GPS system clock and RF reference clock

� Abis/Iub interface function

� Ethernet switch function, providing switch plane for signalingstream and media stream

� Rack management

3.1.1.2 CC Panel

Figure 31 shows the appearance of CC panel.

FIGURE 31 CC PANEL

3.1.1.3 CC Indicators

Table 6 describes the indicators on CC panel.

TABLE 6 CC INDICATOR DESCRIPTION

LED Col-or

Meaning Description

HS Blue Plugging/Unplug-ging indicator

On: The board can beunplugged.

Flashing: The board is beingactivated or deactivated.

Off: The board cannot beunplugged.

RUN Gre-en

Running indicator Always on: The board is in resetstate.

Flashing at 1Hz: The board isnormally running.

Off: Self test fails.

ALM Red Alarm indicator On: The board has an alarm.

Off: The board has no alarm.


Chapter 3 SDR Boards

LED Col-or

Meaning Description

E0S Gre-en

E1/T1 statusindicator (link 0–3)

Alternate flash for differentlinks; the max 4 flashes persecond; flashing at frequency of5 Hz.

The first second: one flashmeans Link 0 is normal and OFFmeans Link 0 is not in use.

The third second: two flashesmeans Link 1 is normal and OFFmeans Link 1 is not in use.

The fifth second: three flashesmeans Link 2 is normal and OFFmeans Link 2 is not in use.

The seventh second: fourflashes means Link 3 is normaland OFF means Link 3 is not inuse.

Recycle. Each cycle lasts foreight seconds.

E1S Gre-en

E1/T1 statusindicator (link 4–7)

Ditto

E2S Gre-en

E1/T1 statusindicator (link8–11)

Ditto

E3S Gre-en

E1/T1 statusindicator (link12–15)

Ditto

MS Gre-en

Active/Standbystatus indicator

On: The board is in activestatus.

Off: The board is in standbystatus.

REF Gre-en

GPS antenna stateor 2 MHz state,connection stateof SMA Interfaceon correspondingpanel GPS

Always on: The antenna feederis normal.

Always off: The antenna feederand satellite are normal, ininitialization state.

Slow Flash (flashing at 1 Hz)):The antenna feeder is broken.

Fast Flash (flashing at 2 Hz):The antenna feeder is normalbut cannot receive satellitesignal.

Slowest Flash (flashing at 0.5Hz): Antenna short circuit

Quickest Flash (flashing at 5Hz): No message is received atthe initialization stage.



LED Col-or

Meaning Description

ETH0 Gre-en

ABIS/Iub interfacelink state

On: Physical link of ABIS/Iubnetwork interface (optical orelectrical) is normal.

Flashing: physical link ofABIS/Iub network interfaceis normal when sending orreceiving data.

Off: Physical link of ABIS/Iubnetwork interface is broken.

ETH1 Gre-en

Link state of ETH1network interface

On: Physical link of networkinterface is normal.

Flashing:physical link ofABIS/Iub network interfaceis normal when sending orreceiving data.

Off: Physical link of networkinterface is broken.

3.1.1.4 CC Buttons

Table 7 describes the buttons on CC panel.

TABLE 7 CC BUTTONS

Button Description

M/S For active and standby switchover

RST To reset the CC

3.1.1.5 CC Interfaces

Table 8 describes the interfaces on CC module panel.

TABLE 8 INTERFACES ON CC MODULE PANEL

Interface Description

ETH0 Used for Ethernet interface connection between BBUand BSC/RNC. This interface is either Ethernet opticalinterface or electrical interface. (10M/100M/1000Mself-adaptive)

ETH1 Used for BBU cascade, debugging, or localmaintenance. Ethernet electrical interface(10M/100M/1000M self-adaptive)

EXT External communication port, connected to externalreceiver, (mainly 485, PP1S+/2M+ interface)

REF Connected to GPS antenna, SMA (F) interface



3.1.1.6 CC Indices

Table 9 lists the specifications of CC indices.

TABLE 9 CC INDEX DESCRIPTION

Index Specification

Dimension 148.8 mm × 19.0 mm × 181.5mm (H×W×D)

Weight 0.5 Kg

Power consumption 25 W

Hot swap Yes

3.1.2 UBPG

3.1.2.1 UBPG Functions

uBPG provides the following functions:

� Baseband modulation: handles 12 carriers on downlink atmaximum

� Baseband modulation: handles 12 carrier on uplink at maxi-mum

� Supports baseband frequency hopping

� Supports static and dynamic power control

3.1.2.2 UBPG Panel

Figure 32 shows the appearance of UBPG panel.

FIGURE 32 UBPG PANEL

3.1.2.3 UBPG Indicators

Table 10 describes the indicators on UBPG panel.



TABLE 10 UBPG INDICATOR DESCRIPTION

LED Color Meaning Description

HS Blue Plugging/Un-plugging indica-tor

On: Theboard can beunplugged.

Flashing: Theboard is beingactivated ordeactivated.

Off: The boardcannot beunplugged.

RUN Green Runningindicator

Always on: Theboard is in resetstate.

Flashing at1 Hz: Theboard is runningnormally.

Off: Board selftest fails.

ALM Red Alarm indicator On: The boardhas an alarm.

Off: The boardhas no alarm.

3.1.2.4 UBPG Buttons

Table 11 describes the buttons on UBPG panel.

TABLE 11 UBPG BUTTONS

Button Description

RST To reset the UBPG

3.1.2.5 UBPG Interfaces

Table 12 describes the interfaces on UBPG panel.

TABLE 12 UBPG INTERFACE DESCRIPTION


TX0 RX0 ~ TX2 RX2 Reserved for future use

3.1.2.6 UBPG Indices

Table 13 lists the specifications of UBPG indices.



TABLE 13 UBPG INDEX DESCRIPTION

Indicator Specification

Dimension 148.8 mm ×19.0 mm ×181.5 mm(H×W×D)

Weight 0.5 Kg


Hot swap Yes

3.1.3 BPC

3.1.3.1 BPC Functions

BPC provides the following functions:

� Coding/multiplexing, rate matching, channel mapping, spec-trum spreading and scrambling, power weight and channelsynthesis for downlink data

� Rake receiving and channel decoding for uplink data, transmis-sion of uplink data to Iub interface

� Supporting radio link synchronization and transmission-frameprocessing

� Power control

� Soft switch

� Measurement

3.1.3.2 BPC Panel

Figure 33 shows the appearance of BPC panel.

FIGURE 33 BPC PANEL

3.1.3.3 BPC Indicators

Table 14 describes the indicators on BPC panel.



TABLE 14 BPC INDICATOR DESCRIPTION







Always On: Theboard is in resetstate.


Off: Board selftest fails.



3.1.3.4 BPC Buttons

Table 15 describes the buttons on BPC panel.

TABLE 15 BPC BUTTONS

Button Description

RST To reset the BPC

3.1.3.5 BPC Interfaces

None

3.1.3.6 BPC Indices

Table 16 lists the specifications of BPC indices.



TABLE 16 BPC INDEX DESCRIPTION

Index Specification

Dimension 148.8 mm × 19.0 mm × 181.5mm (H×W×H)

Weight 0.5 Kg


Hot swap Yes

3.1.4 FS

3.1.4.1 FS Functions

FS provides the following functions:

� Baseband IQ data exchange

� Providing the interface between BBU and RRU

3.1.4.2 FS Panel

Figure 34 shows the appearance of FS panel.

FIGURE 34 FS PANEL

3.1.4.3 FS Indicators

Table 17 describes the indicators on FS panel.

TABLE 17 FS INDICATOR DESCRIPTION












Off: Self testfails.



CST - CPU statusindicator

For possiblefuture use

SCS - Clock indicator For possiblefuture use

FLS - Forward linkindicator


RLS - Reverse linkindicator


3.1.4.4 FS Buttons

Table 18 describes the buttons on FS panel.

TABLE 18 FS BUTTONS

Button Description

RST To reset the FS

3.1.4.5 FS Interfaces

Table 19 describes the interfaces on FS panel.

TABLE 19 FS INTERFACE DESCRIPTION


TX0 RX0 ~ TX5 RX5 Optical interfacefor connectingRRU

3.1.4.6 FS Indices

Table 20 lists the specifications of FS indices.



TABLE 20 FS INDEX DESCRIPTION

Index Specification

Dimension 148.8 mm × 19.0 mm × 181.5 mm(H×W×D)

Weight 0.5 Kg


Hot swap Yes

3.1.5 SA

3.1.5.1 SA Functions

SA provides the following functions:

� Alarm monitor and rev control of no more than 9 fans

� Signal monitor and interface lightning protection for the rack

� Providing 6 input dry contact interfaces, 2 input/output drycontact interfaces

� Providing 8 lines of E1/T1 interfaces

3.1.5.2 SA Panel

Figure 35 shows the appearance of SA panel.

FIGURE 35 SA PANEL

3.1.5.3 SA Indicators

Table 21 describes the indicators on SA panel.



TABLE 21 SA INDICATOR DESCRIPTION









Off: Self checkfails.

ALM Red Alarm indicator On: There isan alarm on theboard.

Off: There isno alarm on theboard.

3.1.5.4 SA Buttons

Table 22 describes the buttons on SA panel.

TABLE 22 SA BUTTONS

Button Description

RST To reset the SA

3.1.5.5 SA Interfaces

Table 23 describes the interfaces on SA panel.

TABLE 23 SA INTERFACE DESCRIPTION


– 8 lines of E1/T1 interface, RS485/232 interface, 6+2dry contact interfaces (6 input lines, 2 bi-directionallines)



3.1.5.6 SA Jumpers

Note:

For each jumpered position, 0 stands for open circuit, and 1 standsfor short circuit.

Jumpers (X5 and X6) on SA are configurable. X5 is used to setE1/T1 transmission mode. X6 is used to set cabinet number inBBU cascade state. Location of X5 and X6 is shown in Figure 36.For X5/X6 in Figure 36, LSB (least significant bit) position is onthe left side, and MSB (most significant bit) position is on the rightside.



FIGURE 36 LOCATION OF X5 AND X6 ON SA

X5 sets the circuit transmission mode for ABIS/Iub interface, whichincludes uplink/downlink working mode, matched impedance, andmatching E1/T1 with long-line/short-line.

E1/T1 mode and transmission impedance are set with the two LSBpositions of X5. Configuration of X5 LSB positions is shown in Table24.

TABLE 24 TWO LSB POSITIONS OF X5

X5 Jumpered Position [1, 0] E1/T1 Mode

[short circuit, short circuit] Reserved

[short circuit, open circuit] T1, 100 Ω



X5 Jumpered Position [1, 0] E1/T1 Mode

[open circuit, short circuit] E1, 120 Ω

[open circuit, open circuit] E1, 75 Ω by default

Long-line/short-line mode for E1/T1 uplink/downlink is set with thetwo MSB positions of X5.

Uplink and downlink employ different transmission directions. Up-link direction is from BBU to BSC/RNC; downlink direction fromBSC/RNC to BBU.

Long-line/short-line refers to E1 receiving mode. Long-line is usedwhen E1 transmission line is longer than 1 km. Short-line is usedwhen E1 transmission line is short.

Configuration of X5 MSB positions is shown in Table 25.

TABLE 25 TWO MSB POSITIONS OF X5

X5 Jumpered Position [3, 2] Mode

[open circuit, open circuit] Short-line for uplink and downlink

[short circuit, short circuit] Long-line for uplink and downlink

[open circuit, short circuit] Short-line for uplink and long-linefor downlink

[short circuit, open circuit] Long-line for uplink and short-linefor downlink

X6 is used to set cabinet number in BBU cascade state. Maximumcascaded BBU quantity is eight. The circuit state for X6 positionis 000-111 (default state is 000). Configuration of X6 jumperedpositions is shown in Table 26.

TABLE 26 X6 JUMPERED POSITIONS

X6 Jumpered Position [2,1,0] BBU Cabinet Number

[open circuit, open circuit, opencircuit]

0

[open circuit, open circuit, shortcircuit]

1

[open circuit, short circuit, opencircuit]

2

[open circuit, short circuit, shortcircuit]

3

[short circuit, open circuit, opencircuit]

4

[short circuit, open circuit, shortcircuit]

5



X6 Jumpered Position [2,1,0] BBU Cabinet Number

[short circuit, short circuit, opencircuit]

6

[short circuit, short circuit, shortcircuit]

7

3.1.5.7 SA Indices

Table 27 lists the specifications of SA indices.

TABLE 27 SA INDEX DESCRIPTION

Index Specification


Weight 0.25 Kg


Hot swap Yes

3.1.6 SE

3.1.6.1 SE Functions

SE panel provides the following functions:

� Responsible for monitoring the signals of the shelf and interfacelightning protection.

� Provides 6 input dry contact interfaces, and 2 input/output drycontact interfaces.

� Provides 8 channels of E1/T1 interfaces.

3.1.6.2 SE Panel

Figure 37 shows SE panel.

FIGURE 37 SE PANEL



3.1.6.3 SE Indicators

Table 28 describes the indicators on SE panel.

TABLE 28 SE INDICATOR DESCRIPTION









Off: Self testfails.



3.1.6.4 SE Interfaces

Table 29 describes the interfaces on SE panel.

TABLE 29 SE INTERFACE DESCRIPTION


- 8 lines of E1/T1 interface,RS485/232 interface, 6+2 drycontact interfaces (6 input lines, 2di-directional lines)

3.1.6.5 SE Indices

Table 30 lists the specifications of PM indices.



TABLE 30 SE INDEX DESCRIPTION

Index Specification

Dimension 73.8 mm × 19.0 mm ×181.5 mm(H×W×D)

Weight 0.2 Kg


Hot swap Yes

3.1.7 PM

3.1.7.1 PM Functions

PM provides the following functions:

� 16 internal interfaces for +12 V load power

� 16 internal interfaces for +3.3 V management power

� EMMC management

� Measurement and protection of input over-voltage and under-voltage

� Output over-current protection and load power management

3.1.7.2 PM Panel

Figure 38 shows the appearance of PM panel.

FIGURE 38 PM PANEL

3.1.7.3 PM Indicators

Table 31 describes the indicators on PM panel.



TABLE 31 PM INDICATOR DESCRIPTION



Always on: The board is inreset state.

Flashing at 1 Hz: The boardis running normally.


ALM Red Alarmindicator

On: The board has an alarm.

Off: The board has no alarm.

HS Blue Plugging/Un-plugging indi-cator

On: The board can beunplugged.

Flashing: The board is beingactivated or deactivated.

Off: The board cannot beunplugged.

3.1.7.4 PM Interfaces

Table 32 describes the interfaces on PM panel.

TABLE 32 PM INTERFACE DESCRIPTION

Name Description

MON Debugging interface, RS232 serialport

-48V/-48VRTN -48 V input interface

3.1.7.5 PM Indices

Table 33 lists the specifications of PM indices.

TABLE 33 PM INDEX DESCRIPTION

Index Specification


Weight 0.5 Kg

Power Consumption ≤40 W

Hot swap Yes



3.1.8 FA

3.1.8.1 FA Functions

FA provides the following functions:

� System temperature monitoring and control

� Monitoring, control, and report of fan state

3.1.8.2 FA Panel

Figure 39 shows the appearance of FA panel.

FIGURE 39 FA PANEL

3.1.8.3 FA Indicators

Table 34 describes the indicators on FA panel.



TABLE 34 FA INDICATOR DESCRIPTION



Always on: The board isin reset state.

Flashing at 1 Hz: Theboard is in running state.


ALM Red Alarmindicator

On: The board has analarm.

Off: The board has noalarm.

3.1.8.4 FA Indices

Table 35 lists the specifications of FA indices.

TABLE 35 FA INDEX DESCRIPTION

Index Specification

Dimension 84 mm × 42 mm × 186.7 mm(H×W×D)

Weight 0.5 Kg


Hot swap Yes

3.2 Radio Unit

3.2.1 RSU60

3.2.1.1 RSU60 Functions

RSU60 is multi-band RF module, including duplex filter, multi-bandamplifier, transceiver board, interface protection board, and powersupply. One RSU60 supports a maximum of 6 carriers and 80W(GMSK) power output.

It mainly implements the following functions:

� Communication with base-band frame;

� Middle-frequency and radio frequency processing at base sta-tion;

� Support local and remote operation & maintenance;

� Clock synchronization.



3.2.1.2 RSU60 Panel

RSU60 is shown in Figure 40.

FIGURE 40 RSU60 PANEL

3.2.1.3 RSU60 Indicators

For information about RSU60 indicators, refer to Table 36.



TABLE 36 RSU60 INDICATORS DESCRIPTION

Name Color Meaning Remarks

RUN Green RunningIndicator

Normal ON: RSU60 is in resetting orstarting status

Flash in 1Hz: normal RSU60 status

Flash in 5Hz: downloading version

OFF: self-test failure

ALM Red AlarmIndicator

OFF: indicates normal operation orresetting, starting, or downloadingversion

Flash in 5Hz: critical or severe alarm

Flash in 1Hz: normal or minor alarm

LINK Green Opticallinkindicator

Normal ON: normal fiber connection

OFF: disconnected fiber

Flash in 5Hz: consider this linkas clock reference source, andphase-locked loop in fast capturestatus

Flash in 0.25Hz: consider this linkas clock reference source, andphase-locked loop in trace status

RF Orange RFworkingstatusindicator

OFF: without RF output

ON: with RF output

3.2.1.4 RSU60 Interfaces

For information about RSU60 interface, refer to Table 37.

TABLE 37 DESCRIPTION OF RSU60 INTERFACES

InterfaceName

Entity atend A

Entity at endB

Remarks

ANT1(TX-/RX)

RSU60 Rx/Tx Antenna Connected with Rx/Txantenna in primary Rx/Txchannel

ANT2(RX) RSU60 Rx Antenna Connected with Rxdiversity channel

Rx out RSU60 RSU60 withextendedfrequency

Output interface offrequency extension,output primary Rx signal

Rx in RSU60 withextendedfrequency

RSU60 Input interface offrequency extension,input diversity Rx signal



InterfaceName

Entity atend A

Entity at endB

Remarks

TX1 RX1 RSU60 BBU or uppercascadingRSU60

Optical CRPI interfaceconnection for upperRSU60 cascaded withBBU

TX2 RX2 RSU60 LowercascadingRSU60

Optical CRPI interfaceconnection for lowerRSU60 cascaded withBBU

DBG RSU60 PC and tester(test-purposeboards)

Commissioning networkinterface and testinterface

RST - - Hard Reset Button

MON RSU60 Externaldevice

Provides 4-way drycontacts as inputinterface and RS485environment monitoringinterface

AISG RSU60 AntennaFeeder

Connect with AISGinterface of antennafeeder

POWER RSU60 FrontPanel

RF power inpower subrack

-48VDC input powerinterface

3.2.1.5 RSU60 Indices

For information about RSU60 indices, refer to Table 38.

TABLE 38 DESCRIPTION OF RSU60 INDICES

Name Dimension(mm)

Weight(kg)

PowerConsump-tion (W)

Doessupporthotswapping

RSU60 482.6 (H)X 88 (W) X360 (D)

=<13 =<420 Yes


Chapter4 SDR Principles


>> Hardware Architecture>> Software Architecture>> Signal Flow>> Interface and Protocol

4.1 Hardware ArchitectureAccording to the system logic structure, SDR is divided into twoparts:

� Base Band Unit (BBU)

� Radio Unit (RU)

BBU and RU are connected by optical fiber, transferring basebandIQ data and OAM signaling. Figure 41 shows the system structureof SDR.

FIGURE 41 BS8800 SYSTEM STRUCTURE

4.2 Software ArchitectureThe software system of SDR can be divided into operating supportlayer and application layer, as shown in Figure 42.



FIGURE 42 SDR SOFTWARE ARCHITECTURE

The operating support layer provides the functions of OSS, OAM,DBS, BRS, BRACS, and SCS to serve to different BTS mode.

� OAM (Operating And Maintenance) is to provide the configura-tion, alarm and performance measurement function.

� DBS (Data Base Sub-system) is the database system.

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

� BRACS (Barrier Access Control Sub-system) is to control theaccess to bear layer.

� SCS (System Control Sub-system) is to control the power sup-plying and active/standby switching.

OSS (Operation Support Sub-system) is the support layer in thisentire framework, which is a hardware irrespective platform forrunning software and provides basic functions like scheduling,timer, memory management, communication, sequencing control,monitoring, alarming and logging.

BSP (Board Support Package) supports the information routing tothe GSM and public parts in the application layer.

VxWorks is the operation platform communication to the hardwarecomponents.


Chapter 4 SDR Principles

4.3 Signal Flow

4.3.1 System Service Signal Flow

Figure 43 shows the service data flow.

FIGURE 43 SERVICE DATA FLOW

� Downlink direction: The service data from BSC/RNC entersBBU through CC or SA. Abis/Iub interface IP protocol termi-nation and NAT conversion are implemented at CC. The datais then converted to internal IP datagram and transmitted tobaseband board (UBPG/BPC) through the Gigabit Ethernet(GE). The baseband board performs modulation, multiplexing,and rate adaptation for the internal IP datagram, and trans-mits it to the IQ switching unit of FS. Then, on the IQ switchingunit of FS, de-multiplexing, interleaving, frame forming, andparallel-serial conversion are implemented. Finally, the inter-nal IP datagram is distributed to RU through the baseband-RFinterface (optical interface).

Note:

If Abis/Iub interface adopts E1/T1 interface, then signal trans-ferring and protection are implemented through the SA board.If Abis/Iub interface adopts GE interface, then connect with theCC board directly.

� Uplink direction: The IQ switching unit of FS receives base-band signals from RU, performs de-multiplexing for them, andthen transmits them to baseband board through high-speedserial signals. The baseband board then performs demodula-tion for them to get the original service signals. These signalsare packaged into Ethernet frames, transmitted to the switch-ing center through GE, and processed according to Abis/Iubinterface transmission protocols on the CC board. Finally, theyare transmitted to BSC/RNC through E1/T1/GE.



4.3.2 System Control Signal Flow

The CC board implements the main control function. The controlsignal is distributed to all other boards through CC board. Figure44 shows the control signal flow.

FIGURE 44 CONTROL SIGNAL FLOW

4.3.3 System Clock Signal Flow

The system clock is distributed to all other boards through CCboard, and is distributed to RU through the optical interface. Figure45 shows the clock distribution.

FIGURE 45 CLOCK DISTRIBUTION

In Figure 45, the clock reference of CC board is from GPS network.The clock reference of CC board can be: GPS output clock refer-ence, Abis/Iub E1/T1 synchronous upper-level clock, or the inputBITS reference clock of CC's front panel. Select different clocksources according to specific application scenarios.

4.4 Interface and ProtocolSystem protocol interfaces are shown in Figure 46



FIGURE 46 SYSTEM PROTOCOL INTERFACES

Table 39 describes these interfaces.

TABLE 39 INTERFACE DESCRIPTIONS

Interface Position Function

Abis Between BTS andBSC

Communicating with BSC

Um Between MS andBTS

Air interface

Baseband-RFinterface

Between basebandunit and radio unit

Connecting baseband unit andradio unit

Iub Between Node Band RNC

Communicating with RNC

Uu Between UE andNode B

Air interface

4.4.1 Abis interface

Abis interface is between BTS and BSC.

InterfaceFunctions

Abis interface supports all services provided to users, and supportssignaling transmitting and connection function. It especially sup-ports radio resource management including BTS radio equipmentcontrol and allocation.

InterfaceRealization

Abis interface supports the following physical interfaces:

� Gigabit Ethernet (GE) interface

Abis interface supports GE optical interface or GE RJ45 inter-face. In this case, BTS and BSC are connected through optical



fiber or Ethernet cable. The network port of BTS and BSC is GEinterface with 1000 MHz bandwidth, and it self-adapts variousrates of 10 Mbps/100 Mbps/1000 Mbps.

� E1/T1 interface

When Abis interface adopts E1/T1 interface, BTS and BSC areconnected through a single E1 cable of 2.048 MHz bandwidthor a single T1 coaxial cable of 1.544 MHz bandwidth.

Protocol Hierarchy The following introduces user plane protocols and control planeprotocols respectively.

� Control plane protocol

i. Under the Ethernet transmission mode, the control planeprotocol stack of Abis interface is shown in Figure 47.

FIGURE 47 CONTROL PLANE PROTOCOL STACK OF ABIS INTERFACE– ETHERNET

When Abis interface adopts Ethernet cable, the controlplane message is carried by SCTP protocol and encapsu-lated into IP message. The data link layer adopts standardEthernet MAC frame.

ii. Under the E1 transmission mode, the control plane protocolstack of Abis interface is shown in Figure 48.

FIGURE 48 CONTROL PLANE PROTOCOL STACK OF ABIS INTERFACE– E1

When Abis interface adopts E1 cable, the control planemessage is carried by SCTP protocol and encapsulated intoIP message. The data link layer adopts Point-to-Point Pro-tocol (PPP), and the IP message is carried by Internet Pro-tocol Control Protocol (IPCP) of PPP family. Multiple E1s canbe combined to form the Multilink-PPP group to increasethe bandwidth. The bottom layer adopts High Level DataLink Control (HDLC) to form the frame, converts the bytestream to bit stream and transmits it on physical media.

� User plane protocol



i. Under the Ethernet transmission mode, the user plane pro-tocol stack of Abis interface is shown in Figure 49.

FIGURE 49 USER PLANE PROTOCOL STACK OF ABIS INTERFACE –ETHERNET

The user plane message is carried by RTP protocol and en-capsulated into standard IP message. The data link layeradopts standard Ethernet MAC frame.

ii. Under the E1/T1 transmission mode, the user plane proto-col stack of Abis interface is shown in Figure 50.

FIGURE 50 USER PLANE PROTOCOL STACK OF ABIS INTERFACE – E1

The user plane message is carried by RTP protocol and en-capsulated into IP message. The data link layer adopts PPP,and the IP message is carried by IPCP of PPP family. Mul-tiple E1s can be combined to form the Multilink-PPP groupto increase the bandwidth. The bottom layer adopts HDLCto form the frame, converts the byte stream to bit streamand transmits it on physical media.

4.4.2 Um Interface

Um interface is between BTS and MS.

InterfaceFunctions

In PLMN, MS connects fixed part of the network through a radiochannel to enable subscribers to access communication services.To interconnect MS and BTS, a series of standards are set up forsignal transmission over the radio channel, which is the Um inter-face.

Protocol Hierarchy Um interface is designed with a hierarchical model. Figure 51shows the hierarchical model of circuit service protocols.



FIGURE 51 CIRCUIT SERVICE PROTOCOL HIERARCHY OF UM INTERFACE

On Um interface, circuit service protocols fall into the followingthree layers:

1. Layer–1 (bottom) is the physical layer. It consists of variouschannels and provides the basic radio channels for upper-levelmessage transmission.

2. Layer–2 (middle) is the data link layer. It adopts Link AccessProtocol on Dm Channel (LAPDm). It comprises various datatransmission structures and controls data transmission.

3. Layer–3 (top) is the highest layer. It comprises various mes-sages and programs and provides service control. Layer 3 con-sists of the following three sub-layers:

� Radio-Resource management (RR)

� Mobility Management (MM)

� Connection Management (CM)

Figure 52 shows the hierarchical model of packet service protocols,which is implemented at BSC side.

FIGURE 52 PACKET SERVICE PROTOCOL STACK HIERARCHY OF UMINTERFACE



Relevant protocolsof Um interface

� GSM 04.03: It describes the channel structure and access ca-pability of Um interface.

� GSM 04.04: It specifies the physical layer structure of Um in-terface.

� GSM 04.05: It specifies the data link layer protocol of Um in-terface.

� GSM 04.08: It specifies the layer-3 protocol of Um interface.


The air interface Um is realized through antenna feeder subsystemof the base station, including feeders and antennas.

4.4.3 Iub Interface

Iub interface is between Node B and RNC.

InterfaceFunctions

Iub interface performs the following functions:

� Transmission resource management

� Maintenance management

� O&M transmission

� System information management

� Common channel resource management

� Dedicated channel resource management

� Downlink shared channel resource management

� Timing and synchronization management


Iub interface supports the following physical interfaces:

� Gigabit Ethernet (GE) interface

Iub interface supports GE optical interface or GE RJ45 inter-face. In this case, Node B and RNC are connected through opti-cal fiber or Ethernet cable. The network port of Node B and RNCis GE interface with 1000 MHz bandwidth, and it self-adaptsvarious rates of 10 Mbps/100 Mbps/1000 Mbps.

� E1/T1 interface

When Iub interface adopts E1/T1 interface, Node B and RNCare connected through a single E1 cable of 2.048 MHz band-width or a single T1 coaxial cable of 1.544 MHz bandwidth.

Protocol Hierarchy The following introduces user plane protocols and control planeprotocols respectively.

� Control plane protocol

i. Under the Ethernet transmission mode, the control planeprotocol stack of Iub interface is shown in Figure 53.



FIGURE 53 CONTROL PLANE PROTOCOL STACK OF IUB INTERFACE –ETHERNET

When Iub interface adopts Ethernet cable, the NBAP sig-naling is carried by SCTP protocol and encapsulated intoIP message. The data link layer adopts standard EthernetMAC frame.

ii. Under the E1 transmission mode, the control plane protocolstack of Iub interface is shown in Figure 54.

FIGURE 54 CONTROL PLANE PROTOCOL STACK OF IUB INTERFACE– E1

When Iub interface adopts E1 cable, the NBAP signalingis carried by SCTP protocol and encapsulated into IP mes-sage. The data link layer adopts PPP, and the IP message iscarried by IPCP of PPP family. Multiple E1s can be combinedto form the Multilink-PPP group to increase the bandwidth.The bottom layer adopts HDLC to form the frame, convertsthe byte stream to bit stream and transmits it on physicalmedia.

� User plane protocol

i. Under the Ethernet transmission mode, the user plane pro-tocol stack of Iub interface is shown in Figure 55.

FIGURE 55 USER PLANE PROTOCOL STACK OF IUB INTERFACE –ETHERNET



The user plane FP frame is carried by UDP protocol andencapsulated into standard IP message. The data link layeradopts standard Ethernet MAC frame.

ii. Under the E1/T1 transmission mode, the user plane proto-col stack of Iub interface is shown in Figure 56.

FIGURE 56 USER PLANE PROTOCOL STACK OF IUB INTERFACE – E1

The user plane FP frame is carried by UDP protocol andencapsulated into standard IP message. The data link layeradopts PPP, and the IP message is carried by IPCP of PPPfamily. Multiple E1s can be combined to form the Multilink-PPP group to increase the bandwidth. The bottom layeradopts HDLC to form the frame, converts the byte streamto bit stream and transmits it on physical media.

4.4.4 Uu interface

Uu interface is air interface. The information exchange at Uu in-terface is implemented through the antenna feeder subsystem ofNode B, including feeders and antennas.

The System performs the following functions at Uu interface.

� Broadcasting, paging, and establishing radio connection withUE.

� Handover decision and execution, power control decision andexecution.

� Radio resource management and control.



This page is intentionally blank.


Chapter5 SDR Configuration(BS8800 as Example)


>> SDR configuration principles>> SDR typical configurations

5.1 Configuration PrinciplesThe following describes the integrated equipment configuration,baseband layer configuration, and RF layer configuration.

IntegratedEquipment

Configuration

Table 40 describes configurations of subracks and functional lay-ers.

TABLE 40 INTEGRATED EQUIPMENT CONFIGURATION

Cabinet Layer/S-ubrack

Amount Configuration Description

Basebandlayer

1, 2 At most two baseband layers canbe configured.

RF layer 1 At most one RF layer can beconfigured.

Power dis-tributionsubrack

1 Mandatory

Fansubrack

1 Mandatory

Primarycabinet

Ventilationsubrack

1 Mandatory

RF layer 1Secondarycabinet

Power dis-tributionsubrack

1

The secondary cabinet isoptional. It is configured whenthe number of GSM carriers at asingle site exceeds 36.



Baseband LayerConfiguration

Table 41 describes the baseband layer configuration.

TABLE 41 BASEBAND LAYER CONFIGURATION

Board/Module Amount Configuration Description

CC 1, 2 � At least one CC should beconfigured.

� If active/standby function isrequired, two CCs should beconfigured.

FS 1, 2 At least one FS should beconfigured.

UBPG 1 ~ 5

BPC 1 ~ 5

� In GSM mode, the UBPGboard is configured, while inUMTS mode, the BPC board isconfigured.

� At most 5 UBPG+BPC can beconfigured.

� A single UBPG board canprocess 12 TRXs.

� A single BPC board supports 3CS, and provides a processingcapability of uplink 128 CE anddownlink 128 CE.

SA 1 Mandatory

PM 1, 2 At least one PM should beconfigured.

FA 1 Mandatory

RF LayerConfiguration

Table 42 describes the RF layer configuration.

TABLE 42 RF LAYER CONFIGURATION

Board Amount Configuration Description

RSU60 1 ~ 6 � In GSM mode, a single RU supports 6TRXs at most.

� In UMTS mode, a single RU supports3 CS.

� In GSM/UMTS dual mode, a single RUsupports GSM 4 TRX + UMTS 1 CS orGSM 2 TRX + UMTS 2 CS.

5.2 GSM Single ModeConfigurationIn GSM single mode,RSU60 can be configured with 1 ~ 6 carriersthrough software configuration.

The following lists board configurations of typical site types S6,S12, S6/6/6, and S12/12/12.


Chapter 5 SDR Configuration(BS8800 as Example)

TABLE 43 BOARD CONFIGURATION OF S6 SITE IN GSM SINGLE MODE

Site Type Board Amount Remark

CC 1, 2 For active/standbyconfiguration,configure 2 CCboards.

UBPG 1 -

BBU

FS 1, 2 For load-sharingconfiguration,configure 2 FSboards.

S6

RU RSU60 1 -

TABLE 44 BOARD CONFIGURATION OF S12 SITE IN GSM SINGLE MODE



UBPG 1 -

BBU


S12

RU RSU60 2 -

TABLE 45 BOARD CONFIGURATION OF S6/6/6 SITE IN GSM SINGLE MODE



UBPG 2 -

BBU


S6/6/6

RU RSU60 3 -



TABLE 46 BOARD CONFIGURATION OF S12/12/12 SITE IN GSM SINGLEMODE



UBPG 3 -

BBU


S12/12/12

RU RSU60 6 -

5.3 UMTS Single ModeConfigurationThe following lists board configurations of typical site types 3C1S,6C1S, 1C3S, and 4C3S.

TABLE 47 BOARD CONFIGURATION OF 3C1S SITE IN UMTS SINGLE MODE



BPC 1 -

BBU


3C1S

RU RSU60 1 -




BPC 2 -

BBU

FS 1, 2 For load-sharingconfiguration,

6C1S



Site Type Board Amount Remarkconfigure 2 FSboards.

RU RSU60 2 -




BPC 1 -

BBU


1C3S

RU RSU60 3 -




BPC 4 -

BBU


4C3S

RU RSU60 6 -

5.4 GSM/UMTS Dual ModeConfigurationThe following lists board configurations of typical site types inGSM/UMTS dual mode co-frequency networking.



TABLE 51 BOARD CONFIGURATION IN GSM/UMTS DUAL MODE(GSM:S4+UMTS:S1 OR GSM:S2+UMTS:S2)

Site Type Board Amo-unt

Remark


UBPG 1 -

BPC 1 -

BBU


GSM:S4+UMTS:S1orGSM:S2+UMTS:S2

RU RSU60 1 -

TABLE 52 BOARD CONFIGURATION IN GSM/UMTS DUAL MODE(GSM:S8+UMTS:S2)


Remark


UBPG 1 -

BPC 1 -

BBU


GSM:S8+UMTS:S2

RU RSU60 2 -

TABLE 53 BOARD CONFIGURATION IN GSM/UMTS DUAL MODE(GSM:S4+UMTS:S4)


Remark


BBUGSM:S4+UMTS:S4




Remark

UBPG 1 -

BPC 2 -


RU RSU60 2 -

TABLE 54 BOARD CONFIGURATION IN GSM/UMTS DUAL MODE(GSM:S4/4/4+UMTS:S1/1/1)


Remark


UBPG 1 -

BPC 1 -

BBU


GSM:S4/4/4+UMTS:S1/1/1

RU RSU60 3 -



Remark


UBPG 1 -

BPC 2 -

BBU



RU RSU60 3 -





Remark


UBPG 2 -

BPC 3 -

BBU



RU RSU60 6 -



Remark


UBPG 2 -

BPC 2 -

BBU



RU RSU60 6 -

5.5 Typical ConfigurationsThis section takes RSU60 for example to explain the system siteconfigurations.



TypicalConfigurationsin GSM Mode

1. S6–type site configuration

Figure 57 shows the S6-type site configuration.

FIGURE 57 S6-TYPE SITE CONFIGURATION

This configuration also supports site types S1, S2, S3, S4, andS5.

2. S12–type site configuration

Figure 58 shows the S12-type site configuration.

FIGURE 58 S12-TYPE SITE CONFIGURATION

This configuration also supports site types S7, S8, S9, S10,and S11.

3. S6/6/6–type site configuration

Figure 59 shows the S6/6/6-type site configuration.



FIGURE 59 S6/6/6-TYPE SITE CONFIGURATION

This configuration also supports site types S1/1/1, S2/2/2,S3/3/3, S4/4/4, and S5/5/5.

4. S12/12/12–type site configuration

Figure 60 shows the S12/12/12-type site configuration.

FIGURE 60 S12/12/12-TYPE SITE CONFIGURATION

This configuration also supports site types S7/7/7, S8/8/8,S9/9/9, S10/10/10, and S11/11/11.



TypicalConfigurationsin UMTS Mode

1. 3C1S-type site configuration

Figure 61 shows the 3C1S-type site configuration.

FIGURE 61 3C1S-TYPE SITE CONFIGURATION












TypicalConfigurations inGSM/UMTS Dual

Mode

1. Single-sector GSM:S4+UMTS:S1 or GSM:S2+UMTS:S2 siteconfiguration

Figure 65 shows the configuration of single-sectorGSM:S4+UMTS:S1 site or GSM:S2+UMTS:S2 site.



FIGURE 65 CONFIGURATION OF SINGLE-SECTOR GSM:S4+UMTS:S1SITE OR GSM:S2+UMTS:S2 SITE

2. Single-sector GSM:S8+UMTS:S2 or GSM:S4+UMTS:S4 siteconfiguration

Figure 66 shows the configuration of single-sectorGSM:S8+UMTS:S2 site or GSM:S4+UMTS:S4 site.

FIGURE 66 CONFIGURATION OF SINGLE-SECTOR GSM:S8+UMTS:S2SITE OR GSM:S4+UMTS:S4 SITE

3. Three-sector GSM:S4/4/4+UMTS:S1/1/1 or GSM:S2/2/2+UM-TS:S2/2/2 site configuration

Figure 67 shows the configuration of three-sector GSM:S4/4/4+UMTS:S1/1/1 site or GSM:S2/2/2+UMTS:S2/2/2 site.



FIGURE 67 CONFIGURATION OF THREE-SECTOR GSM:S4/4/4+UMTS:S1/1/1 SITE ORGSM:S2/2/2+UMTS:S2/2/2 SITE

4. Three-sector GSM:S6/6/6+UMTS:S3/3/3 or GSM:S8/8/8+UM-TS:S2/2/2 site configuration

Figure 68 shows the configuration of three-sector GSM:S6/6/6+UMTS:S3/3/3 site or GSM:S8/8/8+UMTS:S2/2/2 site.

FIGURE 68 CONFIGURATION OF THREE-SECTOR GSM:S6/6/6+UMTS:S3/3/3 SITE ORGSM:S8/8/8+UMTS:S2/2/2 SITE


Chapter6 SDR Operation andMaintenance


>> Maintenance Overview>> Maintenance Functions

6.1 Maintenance OverviewThe maintenance of GERAN involves remote maintenance and localmaintenance. Figure 69 shows the maintenance system network-ing of SDR.

FIGURE 69 GERAN MAINTENANCE NETWORKING

� Remote maintenance(Remote Client)

In remote maintenance, NetNumen M31, the general radioNetwork Element (NE) management system, is connected withOMM of BSC/RNC, and then connected with the base stationthrough Abis interface or Iub interface to implement operationand maintenance.

� Local maintenance(LMT)

In local maintenance, PC is directly connected with the basestation through Ethernet cable to implement operation andmaintenance.



6.2 Maintenance FunctionsIn NetNumen M31, the O&M interface of remote maintenance sys-tem is in the form of topological graphics. Information of each NEin the network can be viewed on the interface. Users can selectthe NE to be maintained and check its performance data, alarminformation, and configuration data. Users can also perform main-tenance for a certain type of NEs through the topological graphicsinterface.

The maintenance system performs the functions is shown in Figure70.

FIGURE 70 EMS FUNCTIONS

� Configuration management

In configuration management, physical/radio resource datacan be added, queried, deleted, and modified for the basestation. It also performs data consistency check, and supportsdynamic data configuration and static data configuration.

� Security management

It guarantees that only authorized users can perform relevantcommand group operations.

� Performance management

It implements performance analysis, call tracing, and signalingtracing.

� Version management

With version management, users can view hardware/softwareversions running at the foreground. The background providesa software downloading system for software upgrade at theforeground.

� Fault management


Chapter 6 SDR Operation and Maintenance

Fault management includes alarm management and diagnosisand test. It performs centralized monitoring of running sta-tus of the base station and collects abnormal information ofboards and links in real time. These functions make it con-venient for operation and maintenance personnel to performanalysis, make decision, and implement maintenance and re-pair.


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