ZXSDR BS8908 G060 (V1.00) Outdoor GSM Mode Micro BTS User Manual

ZXSDR BS8908 G060Outdoor GSM Mode Micro BTS

User Manual

V1.00

ZTE CORPORATIONNO. 55, Hi-tech Road South, ShenZhen, P.R.ChinaPostcode: 518057Tel: +86-755-26771900Fax: +86-755-26770801URL: http://ensupport.zte.com.cnE-mail: [email protected]

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Revision History

Revision No. Revision Date Revision Reason

R1.0 20101030 First edition

R1.1 20110425 Updated

Serial Number: SJ-20101104174421-001

Publishing Date: 20110425(R1.1)

ContentsChapter 1 System Overview ...................................................................... 1-1

1.1 System Background ........................................................................................... 1-1

1.2 System Position ................................................................................................. 1-1

1.2.1 System Position in Network....................................................................... 1-1

1.2.2 System Position in Distributed Base Station ............................................... 1-3

1.3 Cabinet Appearance........................................................................................... 1-4

1.4 Product Features................................................................................................ 1-5

1.5 Services and Functions ...................................................................................... 1-5

1.6 Operation and Maintenance ................................................................................ 1-6

Chapter 2 System Indices.......................................................................... 2-12.1 Physical Indices of RRU ..................................................................................... 2-1

2.2 Radio Performance Indices ................................................................................. 2-2

2.3 Interface and Transmission Indices...................................................................... 2-2

Chapter 3 System Structure and Principles............................................. 3-13.1 Structure and Layout .......................................................................................... 3-1

3.1.1 External Interfaces ................................................................................... 3-1

3.1.2 Equipment Indicators................................................................................ 3-2

3.2 Hardware Subsystem ......................................................................................... 3-4

3.2.1 Hardware Architecture .............................................................................. 3-4

3.2.2 Module Functions..................................................................................... 3-5

3.3 Software Subsystem........................................................................................... 3-6

3.3.1 Software Architecture ............................................................................... 3-6

3.3.2 Software Functions................................................................................... 3-6

Chapter 4 Networking and Configuration ................................................ 4-14.1 Networking ........................................................................................................ 4-1

4.1.1 Star Networking ....................................................................................... 4-1

4.1.2 Cascading Networking.............................................................................. 4-1

4.2 Configuration ..................................................................................................... 4-2

4.2.1 Configuration Principles ............................................................................ 4-2

4.2.2 Typical Configurations .............................................................................. 4-2

Chapter 5 Installation................................................................................. 5-15.1 Safety Instructions.............................................................................................. 5-1

5.1.1 Safety Instructions Overview..................................................................... 5-1

I

5.1.2 Safety Symbols ........................................................................................ 5-1

5.1.3 Safety Instructions Guideline..................................................................... 5-3

5.2 Installation Preparations ..................................................................................... 5-5

5.2.1 Installation Environment Check ................................................................. 5-5

5.2.2 Personnel ................................................................................................ 5-6

5.2.3 Tools and Instruments Preparation ............................................................ 5-6

5.3 Unpacking and Inspection................................................................................... 5-8

5.3.1 Packing Box of BS8908 ............................................................................ 5-8

5.3.2 Unpacking and Inspection Flow................................................................. 5-9

5.4 Installation Overview ........................................................................................ 5-10

5.4.1 Installation Flow ..................................................................................... 5-10

5.4.2 Hoisting Operation Precautions ................................................................5-11

5.5 Installation Modes and Installation Accessories .................................................. 5-12

5.5.1 Installing Accessories ............................................................................. 5-12

5.5.2 Wall-Mounted Installation Mode............................................................... 5-13

5.5.3 Pole-Mounted Installation Mode .............................................................. 5-14

5.5.4 Slot Steel Installation Mode and Equilateral Angle Steel InstallationMode ................................................................................................... 5-17

5.6 R8860 Installation ............................................................................................ 5-18

5.6.1 Installing BS8908 on the Wall.................................................................. 5-18

5.6.2 Pole-Mounted Installation (with Pole Fixing Plate) .................................... 5-20

5.6.3 Installing Cable Rack.............................................................................. 5-25

5.6.4 Installing Lightning Protection Box ........................................................... 5-27

5.7 External Cable Installation ................................................................................ 5-30

5.7.1 External Cable Connections.................................................................... 5-30

5.7.2 External Cable Installation Flow .............................................................. 5-32

5.7.3 Installing Power Cable ............................................................................ 5-33

5.7.4 Installing Grounding Cable...................................................................... 5-35

5.7.5 Installing Abis E1 Cable .......................................................................... 5-36

5.7.6 Installing Abis Ethernet Cable ................................................................. 5-38

5.7.7 Installing Fiber Connecting RRU.............................................................. 5-39

5.7.8 Installing Environment Monitoring Cable .................................................. 5-40

5.7.9 Installing AISG Control Cable.................................................................. 5-41

5.7.10 Installing GPS Cable............................................................................. 5-42

5.7.11 Installing Antenna Feeder Jumper ......................................................... 5-42

Figures............................................................................................................. I

Tables ............................................................................................................ III

II

Glossary .........................................................................................................V

III

Chapter 1System OverviewTable of Contents

System Background ...................................................................................................1-1System Position .........................................................................................................1-1Cabinet Appearance...................................................................................................1-4Product Features........................................................................................................1-5Services and Functions ..............................................................................................1-5Operation and Maintenance .......................................................................................1-6

1.1 System BackgroundZXSDR BS8908 is the GSM outdoor micro base station, which is a product of ZXSDRseries base stations of ZTE Corporation.

ZTE Corporation has launched various series of base stations to satisfy operators'demands. Of the ZTE base station solutions, one is to divide the base station into twounits: Base Band Unit (BBU) and Remote Radio Unit (RRU). BS8908 is a base stationwith BBU and RRU being integrated. It can work as an independent base station oran independent RRU/BBU. It features with small volume, light weight, and low powerconsumption. It also enjoys flexible installation modes such as tower-top installation,wall-mounted installation, and pole-mounted installation.

1.2 System Position

1.2.1 System Position in NetworkThe GSM system consists of four parts: BTS, BSC, CN, and MS, as shown in Figure 1-1.

1-1

SJ-20101104174421-001|20110425(R1.1) ZTE Proprietary and Confidential

ZXSDR BS8908 G060 User Manual

Figure 1-1 BS8908 Position in GSM Network

BTS is responsible for providing the wireless coverage for the GSM network. It performsthe following functions:

l Makes MS access the network and implements the radio link transmission functionthrough Um interface.

l Connects BSC through Abis interface, reports BTS measurement information,broadcasts system information provided by BSC, executes commands issued by BSCsuch as access control command, mobility management command, radio resourcemanagement command, and control command, and performs FP processing andtransmission management.

A BTS in the distributed networking consists of BBU and RRU. The following describesthe functions of the two parts.

l BBU performs digital baseband signal processing and control management.l RRU implements conversion between baseband signal and analog RF signal, which

are transmitted between BBU and antenna.l BBU is connected with RRU through the baseband-RF interface (optical interface),

transmitting I/Q digital baseband signal and OAM signaling data.l BBU is connected with BSC through Abis interface.l RRU is connected with MS through Um interface.

BS8908 can implement functions of the following equipments:

l BTSl RRUl BBU

1-2


Chapter 1 System Overview

1.2.2 System Position in Distributed Base Station

Functions

BBU and RRU are arranged as shown in Figure 1-2. BBU contains the following parts:baseband processing, transmission, and control. The RF processing part is designed inRRU.

Figure 1-2 Base Station (BBU+RRU)

l The base station is divided into BBU and RRU. One BBU provides the sharedbaseband resource for multiple RRUs.

l BBU performs digital baseband signal processing and control management.l RRU implements conversion between baseband signal and analog RF signal, which

are transmitted between BBU and antenna.l BBU is connected with RRU through the baseband-RF interface (optical interface),

transmitting I/Q digital baseband signal and OAM signaling data.l BBU is connected with BSC/Node B through Abis/Iub interface.l RRU is connected with MS/UE through Um/Uu interface.

Distributed Base Station Architecture

BBU and RRU form the distributed base station system. One central BBU can managea group of RRUs, implementing fast and flexible configuration and networking for thebase station system. The BBU+RRU mode reduces the equipment room requirement,decreases the feeder loss, and provides a more flexible site layout mode.

BBU is arranged indoors, connecting RRU, which is often outdoors, through optical fiber.Figure 1-3 shows the distributed base station architecture.

1-3



Figure 1-3 Distributed Base Station System Structure

1.3 Cabinet AppearanceFigure 1-4 shows the BS8908 cabinet appearance.

Figure 1-4 Cabinet Appearance

1-4



1.4 Product Features1. Base station architecture

BS8908 is designed based on the SDR base station structure. The basebandprocessing part supports 12 GSM carriers. The RF part adopts the multi-carrierbroadband receiving technology and multi-carrier DPD linear power-amplificationtechnology, and the working bandwidth is 20 MHz.

2. Flexible configuration and networkingl A single cabinet supports 1 ~ 6 carriers. A single site supports side-by-side

3-cabinet configuration.l It can work as an RRU or an BBU of the SDR base station, and it also can work

as a individual BTS.3. Compact internal structure

It adopts the design that the baseband, the transceiver, and the power amplifier areintegrated in the PCB board.

Blind-mating and interconnection are supported between boards and modules.

4. Green design

The typical power consumption is lower than 190 W.

5. Easy installation

It is suitable for outdoor environment, and is easy to install and maintain, thanks tosmall volume, light weight and good reliability.

1.5 Services and FunctionsServices

BS8908 supports the following services:

1. GSM/EDGEl Full-rate voice servicel Enhanced full rate voice servicel Half-rate voice servicel Adaptive multi-rate voice servicel 9.6 Kbps CS-domain data servicel GPRS/EDGE service

2. R99 servicel CS domain service: self-adaptive multi-rate voice service (8 coding schemes) and

CS 64 Kbps data servicel PS domain service: UL/DL 64 Kbps, UL/DL 128 Kbps, and UL/DL 384 Kbps data

servicel Concurrent service: CS-domain (AMR 12.2 Kbps, CS 64 Kbps) + PS-domain (64

Kbps, 128 Kbps, 384 Kbps)

1-5



Basic Functions

BS8908 supports the following functions.

1. With Um interface, BS8908 accomplishes terminal access and RF link transmission,including: RF signal processing, channel coding and decoding, channel multiplexingand de-multiplexing, measurement and reporting, power control, transmissiondiversity, receiving diversity, calibration, and synchronization.

2. With Abis interface, it is connected with BSC and accomplishes the following functions:cell management, reporting BTS measurement information, broadcasting systemmessages, access control, mobility management, radio resource management, RFsignal processing, and transmission management.

3. With operating andmaintenance interface, it performs systemmanagement, including:configuration management, alarm management, status checking and monitoring.

4. BS8908 also performs the following functions:l Supports the GSM Phase I/Phase II/Phase II+ standard.l Supports the UMTS R99/R4/R5/R6/R7/R8 standard.l Supports GSM 900/1800 MHz, and hybrid networking of different modes and

different frequency bands.l Supports various coding schemes, including GPRS CS1 ~ CS4 and EDGEMCS1

~ MCS9.l Supports various diversity modes, including space diversity, frequency diversity,

time diversity, and polarization diversity.l Supports the Viterbi demodulation algorithm at the receiving end, which enhances

system receiving sensitivity and channel decoding capability.l Supports frequency hopping.l Supports discontinuous transmission.l Supports Time Advance (TA) calculation and ultra-distance coverage with a

maximum radius of 120 km.l Supports Co-BCCH.

1.6 Operation and MaintenanceBS8908 has two Operation and Maintenance (O&M) modes: local O&M and remote O&M.The local O&M uses LMT, and the remote O&M uses the network management systemZTE NetNumen M31, as shown in Figure 1-5.

1-6



Figure 1-5 BS8908 Operation and Maintenance

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Chapter 2System IndicesTable of ContentsPhysical Indices of RRU.............................................................................................2-1Radio Performance Indices ........................................................................................2-2Interface and Transmission Indices ............................................................................2-2

2.1 Physical Indices of RRUThe following lists physical indices of BS8908.

Appearance

Item Index

Size 420 mm × 320 mm × 100 mm (H × W × D)

Weight ≤ 15 kg

Color Light gray

Power Supply and Power Consumption

Item Index

Peak power consumption187 W (TOC 40 W) 900 MHz

190 W (TOC 40 W) 1800 MHz

Rated input voltage-48 V (-60 V DC ~ -37 V DC)

110 V/220 V (90 V AC ~ 290 V AC)

Environment Condition

Item Index

Working environment temperature -40 °C ~ 55 °C

Relative working environment humidity 5% ~ 100%

Protection class IP65

Grounding resistance ≤ 5 Ω

Reliability

Item Index

Availability 99.999576%

2-1



Item Index

MTBF ≥ 236,000 hours

MTTR 1 hour

System service interruption timeThe system's entire service interruption time ≤ 2.227

minute/year

2.2 Radio Performance IndicesThe following lists radio performance indices.

Capacity Indices

Item Index

GSM single-mode configuration

A single cabinet supports six TRXs at most

A single site with three cabinets supports 12 TRXs (S4/4/4) at

most

RF Indices

Item Index

Working band 900/1800 MHz

Working bandwidth 20 MHz

Maximum transmission power GMSK: 40 W; 8PSK: 25 W

Static receiving sensitivity -112.5 dBm/GSM single antenna

2.3 Interface and Transmission IndicesThe following lists interface and transmission indices.

Item Index

Baseband-RF interface (optical inter-

face)

Two, connecting with the baseband unit and cascading with

other RRUs or BS8908 chassis.

MON interfaceOne, connecting with the external monitoring equipment, and

providing four dry contact inputs and one RS485 monitoring.

10/100/1000 Mbps Ethernet interface One, used for local maintenance.

Antenna interface Two, connecting with antenna feeder.

AISG interface One, used for electrical antenna and tower amplifier.

Power supply interface One, providing the external power supply.

2-2


Chapter 2 System Indices

Item Index

GPS interface One, receiving the GPS signal.

Abis E1 interfaceOne, Abis interface 75 Ω E1, Abis interface 120 Ω E1 or 100 Ω

T1.

Abis GE interface One, Abis Ethernet optical interface or electrical interface.

2-3




2-4


Chapter 3System Structure andPrinciplesTable of Contents

Structure and Layout ..................................................................................................3-1Hardware Subsystem .................................................................................................3-4Software Subsystem ..................................................................................................3-6

3.1 Structure and Layout

3.1.1 External InterfacesThe external interfaces of BS8908 are located at the bottom of the cabinet, as shown inFigure 3-1.

Figure 3-1 External Interfaces at Cabinet Bottom

Table 3-1 describes the external interfaces.

Table 3-1 External Interfaces

No. LabelConnected External

SystemInterface Functions

1 GPS GPS antenna Receives the GPS antenna signal

2 USB USB interfacePerforms additional functions such as down-

loading version

3 ABIS1 IBSC IP Abis interface

3-1



No. LabelConnected External

SystemInterface Functions

4 MONExternal auxiliary and moni-

toring equipments

Provides RS485 communication interface for

the peripheral and provides the dry contact

input

5 E1/T1 iBSC Four pairs of E1/T1 Abis interfaces

6 AISGAISG electrical antenna and

tower amplifierExternal AISG interface

7 POWDC/AC power supply equip-

ment

Provides -48 V DC power supply or 110/220

V AC power supply

8 PE Ground Protective grounding

9 ABIS0 iBSC IP Abis optical interface

10 ANT2 Antenna feeder 2 Receiving channel

11 LC1 RRU/BBU Optical interface 1

12 LC2 RRU/BBU Optical interface 2

13 ANT1 Antenna feeder 1Transmitting channel and diversity receiving

channel

14 FETH LMT/OMCB LMT/Test interface

15 TCLK - Clock test interface

16 RST - Reset button

3.1.2 Equipment IndicatorsThe indicators of BS8908 are located at the bottom of the cabinet, as shown in Figure 3-2.

Figure 3-2 BS8908 Indicators

Table 3-2 describes the indicators and buttons.

3-2


Chapter 3 System Structure and Principles

Table 3-2 Indicators and Buttons

Color Name Meaning Work Mode

Flashing at 1 Hz: Normal status

Flashing at 5 Hz: Loading programGreen RUNPower supply and board

running indicator

OFF: No power supply or power supply alarm

Constantly ON: Normal status

Flashing at 1 Hz: USB connection is normal

Flashing at 5 Hz: USB command is being executed

Green ABIS

ABIS FE and optical inter-

face indicator; USB con-

nection indicator

OFF: the optical/electrical interface is abnormal

Constantly ON: the primary cabinet is normal

Green (flashing): the secondary cabinet is normalGreen LCSide-by-side cabinet in-

terface indicatorOFF: abnormal

Flashing: GPS is being initialized

Constantly ON: indicating faultRed REF GPS indicator

OFF: normal

ON: there is power outputGreen PA Power indicator

OFF: there is no power output

Constantly ON: VSWR alarmRed VSWR Antenna feeder interface

indicator OFF: normal

Flashing at 8 Hz in the first second and flashing

once: the 0th E1 is normal; OFF: the 0th E1 is

unavailable

Flashing at 8 Hz in the third second and flashing

twice: the 1st E1 is normal; OFF: the 1st E1 is

unavailable

Flashing at 8 Hz in the fifth second and flashing

three times: the 2nd E1 is normal; OFF: the 2nd

E1 is unavailable

Green TDM E1 interface indicator

Flashing at 8 Hz in the seventh second and

flashing four times: the 3rd E1 is normal; OFF: the

3rd E1 is unavailable

OFF: normalRed ALM Alarm indicator

ON: alarm

3-3



3.2 Hardware Subsystem

3.2.1 Hardware ArchitectureFigure 3-3 shows the hardware architecture of the system.

Figure 3-3 BS8908 Hardware System

BS8908 consists of TRB, MCD, SICB, BIPB, BDCP/BACP, and the structure subsystem,as shown in Table 3-3.

Table 3-3 Cabinet Hardware Composition

Name Meaning Function

TRBTransceiving processing

board

Implements the function of single-channel transmitter and

double-channel receiver, and provides interfaces and con-

trol.

MCD Duplexer filter

Performs the function of combining and splitting for RF-signal

transceiving, including single-channel duplexer and single-

channel receiving filter.

SICB Signal transferring Performs signal conversion between TRB and BIPB.

BIPBExternal-signal interface

protection board

Protects AISG interface between electrical antenna and

tower amplifier, and performs signal transferring for the front

board.

3-4



Name Meaning Function

The BDCP DC power supply implements conversion from

-48 V DC to 5.5 V DC/28 V DC.BDCP/B-

ACPDC/AC power supply

The ADCP AC power supply implements conversion from

220/110 V AC to 5.5 V DC/28 V DC.

Structure

subsys-

tem

- Provides the structure of modules.

3.2.2 Module FunctionsThe following lists the functions of each module.

TRB

l Optical interface processingl E1/T1 interfacel Clock processingl Downlink processingl Uplink processingl RF frequency hoppingl Baseband frequency hoppingl Monitoringl Indicatorsl Power supply and switchesl Reset switch and resettingl Interfaces with external equipments

MCD

l Providing the channel from TRB's transmitting-band channel to the antennal Providing the channel from the two-channel antenna to TRB's receiving-band channell In the channel, suppressing interference and spurious radiation out of the working

frequency bandl Implementing diversity reception

SICBPerforms signal conversion between TRB and BIPB

BIPB

l Signal accessingl Lightning protection processingl Crosstalk protection

3-5



l Outputting AISG interface signal after lightning protection being performedl Panel interfaces

BDCP/BACP

l AC power supply voltage conversionl DC power supply voltage conversionl Normal protection for the power supplyl Voltage-adjustment for the power amplifier

Structure SubsystemProvides the structure of modules

3.3 Software Subsystem

3.3.1 Software ArchitectureThe software system of BS8908 is divided into an operation support layer and a GSMsoftware application layer, as shown in Figure 3-4.

Figure 3-4 BS8908 Software Architecture

3.3.2 Software Functionsl The operation support layer consists of the following parts: OSS, OAM, DBS, BRS,

BRACS, and SCS.1. Operation Support Subsystem (OSS) is the support layer in the entire software

architecture. It provides a hardware-independent platform for system softwarerunning, and provides some basic software functions, including scheduling,

3-6



timer, memory management, inter-module communication, sequence control,monitoring, alarm, and log.

2. Operating and Maintenance (OAM) provides functions such as configuration,alarm, and performance measurement.

3. Data Base Subsystem (DBS) performs system data storage and management.4. Barrier Subsystem (BRS) performs the system protocol stack processing.5. Bearer Access Control Subsystem (BRACS) performs access control for the

bearer layer.6. System Control Subsystem (SCS) controls power supply and active-standby

changeover.l The GSM software application layer consists of OMS, DBB, and BUC.

1. Operation and Maintenance Subsystem (OMS) performs the operation andmaintenance functions including configuration, alarm, and status control.

2. Baseband Unit Control software subsystem (DBB) performs the service signalingprocessing.

3. Digital Base Band software subsystem (BUC) performs the digital basebandprocessing.

3-7




3-8


Chapter 4Networking andConfigurationTable of Contents

Networking .................................................................................................................4-1Configuration..............................................................................................................4-2

4.1 Networking

4.1.1 Star NetworkingFigure 4-1 shows the star networking mode of BS8908.

Figure 4-1 Star Networking

4.1.2 Cascading NetworkingFigure 4-2 shows the cascading networking mode of BS8908.

4-1



Figure 4-2 Cascading Networking

4.2 Configuration

4.2.1 Configuration PrinciplesA single cabinet supports the configuration of 1 ~ 6 TRXs. To guarantee the output power,the configuration of over 4 TRXs is implemented inmulti-cabinet structure. Table 4-1 showsthe typical system configurations.

Table 4-1 Typical System Configuration Specifications

Site Type BS8908 Amount

O1 ~ O4 1

O5 ~ O8

4-diversity reception2

O9 ~ O12

S2/2/2 ~ S4/4/43

4.2.2 Typical ConfigurationsA single BS8908 cabinet supports 6 TRXs. To guarantee the output power, theconfiguration of over 4 TRXs is implemented in multi-cabinet structure. The followingdescribes some typical system configurations.

Base Station Function Configuration

l O2 ~ O4 configuration

Figure 4-3 O2 ~ O4 Configuration

l O5 ~ O8 configuration

4-2


Chapter 4 Networking and Configuration


The secondary cabinet can also be replaced other specific RRU.

l S2/2/2 ~ S4/4/4 configuration and O9 ~ O12 configuration


The secondary cabinet can also be replaced other specific RRU.

l 4-diversity reception

The hardware configuration is the same as that of O5 ~ O8 configuration, but thefrequency configuration of the primary cabinet and the secondary cabinet must be thesame.

RRU Function Configuration

BS8908 can also work as an RRU, connecting BBU.

4-3



Figure 4-6 RRU Function Configuration Diagram

BBU Function Configuration

BS8908 can also work as a BBU, connecting RRU.

Figure 4-7 BBU Function Configuration Diagram

4-4


Chapter 5InstallationTable of Contents

Safety Instructions......................................................................................................5-1Installation Preparations .............................................................................................5-5Unpacking and Inspection ..........................................................................................5-8Installation Overview ................................................................................................5-10Installation Modes and Installation Accessories ........................................................5-12R8860 Installation ....................................................................................................5-18External Cable Installation........................................................................................5-30

5.1 Safety Instructions

5.1.1 Safety Instructions OverviewOnly the professional personnel who have received relevant training of BS8908 systemcan operate and maintain the equipment.

The following lists basic requirements for BS8908 maintenance personnel:

l Master fundamental theory of BS8908 system.l Be familiar with BS8908 equipment principles and networking.l Acquire certain network optimization skill.

Operation and maintenance of the equipment must follow the local safety regulations toavoid body injuries or equipment damages. The safe instructions given in this manual aresupplementary to the local safety regulations.

ZTE shall not bear any liabilities incurred by violation of universal safety operationrequirements, or violation of safety standards for designing, manufacturing and equipmentusage.

5.1.2 Safety SymbolsTable 5-1 lists safety symbols and their meanings.

Table 5-1 Safety Symbols and Meanings

Safety Symbol Meaning

Universal alarm: General safety precaution.

5-1



Safety Symbol Meaning

Electrostatic: Device may be sensitive to static

electricity.

Electric shock: There is a risk of electric shock.

High temperature: Surface is hot and may cause

personal injury if touched.

Laser: Beware of strong laser beam.

Microwave: Beware of strong electromagnetic

field.

Universal alarm symbols comprises of four levels: Danger, Warning, Caution, and Notein descending order of criticality. The safety level description is given on the right of thesafety symbol. Detailed safety level information is given below the safety symbol, in thefollowing format.

Danger!

Indicates an imminently hazardous situation, which, if not avoided, could result in death orserious injury. Limit its use to only extreme situations.

Warning!

Indicates a hazardous situation, which, if not avoided, could result in serious injuries,equipment damages or interruption of major services.

Caution!

Indicates a potentially hazardous situation, which, if not avoided, could result in moderateinjuries, equipment damages or partial service interruption.

5-2


Chapter 5 Installation

Note:

Indicates helpful information, which, if ignored, could result in minor injuries, equipmentdamages or partial service interruption.

5.1.3 Safety Instructions Guideline

Electrical Safety

Danger!

Never install or uninstall power cables while they are live. At the instant when the powercable touches a conductor, electric spark or electric arc might be generated, resulting infire or damage to eyes.

Shut down the power supply before installing or removing a power cable.

Before connecting cables, make sure that the cables and cable labels match the practicalinstallation conditions.

Warning!

Drilling in the cabinet without prior permission is prohibited. Unnecessary drilling candamage cables inside the cabinet. The metal pieces blown in during drilling can causeshort circuits in the circuit board.

Static Electricity

Caution!

Static electricity produced by human body can damage electrostatic-sensitive componentson the circuit board, such as Large Integrated Circuits (LIC).

Friction caused by human body is the root cause of electrostatic charge accumulation.In a dry environment, the static voltage carried by human body can be up to 30 kV andcan remain in human body for a long time. Person carrying static charge can damage acomponent by touching it and hence transferring the charge to the component.

5-3



To prevent human body's static charge from damaging sensitive components, wear theantistatic wrist strap and ground its other end before touching the equipment or holding aplug-in board, circuit board, or IC chip etc.

Laser

Warning!

Do not stare at the laser beam from the optical terminal or the laser beam inside the opticalfiber; otherwise human eyes would be injured.

High Temperature

Danger!

The temperature of some components' surface is quite high. Do not touch the surface toavoid a scald injury.

Hoisting Weights

Warning!

Make sure that no one stays or walks under the hoisted weight.

l To disassemble, move, or replace a heavy equipment, make sure that facilities withproper hoisting capability are available.

l Personnel performing the hoisting task must have received proper training. Before thehoisting operation is performed, the hoisting tools must be checked and be complete.

l Make sure that the hoisting tools are firmly fixed on the support frame or the wall.l Use short command to avoid misoperation.

Personnel

Caution!

Non-professionals cannot perform maintenance inside the equipment unless under theinstructions of professionals on the site.

5-4



Replacing any part or altering the equipment might result in unexpected dangers.Therefore, do not replace any part or alter the equipment unless being authorized. Toensure your safety, contact ZTE in case of any queries.

5.2 Installation Preparations

5.2.1 Installation Environment CheckBefore installation, check the installation environment according to requirements specifiedin the Environment Acceptance Report. This section is only for reference.

Installation Position CheckThe installation position of BS8908 must satisfy the project design requirement:

l Be far away from areas with dust, poisonous gas, and explosive.l Be far away from areas with strong vibration or strong noise.l Be far away from substations.l Be far away from the pollution source.l Be far away from the industrial boiler and the heating boiler.l Be far away from the high-power radio interference source.

Temperature and Humidity CheckThe working temperature and humidity of BS8908 must satisfy the requirement listed inTable 5-2.

Table 5-2 Working Temperature and Humidity Requirement for BS8908

Item Requirement

Temperature -40 °C ~ 55 °C (-40 °F ~ 131 °F)

Humidity 5% RH ~ 100% RH

Power Supply CheckThe following lists the power supply requirements for BS8908:

1. DC power supply. BS8908 provides -48 V DC power supply. The voltage range is -57V DC ~ -40 V DC.

2. AC power supply.

Lightning Protection CheckThe following lists the lightning protection requirements of BS8908:

l Outdoor installation1. WhenDC power supply is used, an outdoor DC lightning protection boxOLP48-1B

should be configured. If the DC power supply is led out from the equipment room,the power cable is over 10 m (shorter than 50 m), and the output end of the DC

5-5



power supply does not have a lightning protection higher than level B, then anindoor DC lightning protection box ILP48-3 must be configured in the equipmentroom.

2. When indirect AC power supply is used, the AC lightning protection box shouldbe configured.

l Indoor installation: When the power cable is laid outdoors, lightning protection shouldbe performed for the power supply according to the outdoor condition.

Grounding CheckBS8908 adopts the joint grounding mode, and the grounding resistance is 5 Ω at most.

Other Checks

1. The auxiliary equipments or components must satisfy the project design requirementof BS8908.

2. The transmission equipments connecting the interconnecting equipments such as thebaseband unit are available.

5.2.2 PersonnelThe installation supervisor is responsible for training and managing installation personneland ensuring the installation quality. The installation personnel perform the installation.

Requirements on the installation supervisor:

l Being aware of the importance of quality.l Having participated in relevant training held by ZTE Corporation and being qualified

for installation supervision.l Being familiar with material, tools, and operations involved in the installation.l Being familiar with the installation flow and the installation method.l Following the principle of safety being the most important, organizing appropriate

personnel to implement the installation, and ensuring that the installation is completedsuccessfully.

Requirements on installation personnel

l Having participated in relevant training held by ZTE Corporation and being qualifiedfor installation operations.

l Being healthy and having not drunk.l Strictly following the usage specification of tools and instruments, and wearing safety

belt.l Keeping tools and instruments well to prevent them from falling.l Not wearing loose clothes and slippery shoes.

5.2.3 Tools and Instruments PreparationPrepare installation tools and testing instruments listed in Table 5-3, and use themaccording to actual requirements.

5-6



Table 5-3 Tools and Instruments

Name Example Name Example

Coax-

ial cable

stripper Screwdriver

Electric

percus-

sive drill Hex wrench

Safety hel-

met Plier

Spanner

Horizontal

ruler

Paper

knife Ladder

Grounding

resistance

tester Multimeter

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Name Example Name Example

Multi-

functional

press plier Dust collector

Slip-proof

gloves

Claw ham-

mer

Hacksaw

Hydraulic

crimper

Connector

bar

Tape mea-

sure (5m)

5.3 Unpacking and Inspection

5.3.1 Packing Box of BS8908BS8908 is packed in carton. The BS8908 cabinet is wrapped in EPE foam pad and put inthe packing box, as shown in Figure 5-1.

5-8



Figure 5-1 Package of BS8908

5.3.2 Unpacking and Inspection FlowFigure 5-2 shows the flow of unpacking and inspection. For operations details andprecautions, refer to the engineering document of BS8908 Unpacking and InspectionGuide.

5-9



Figure 5-2 Unpacking and Inspection Flow

5.4 Installation Overview

5.4.1 Installation FlowFigure 5-3 shows the installation flow.

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Figure 5-3 BS8908 Installation Flow

5.4.2 Hoisting Operation PrecautionsThe following lists precautions for hoisting equipment to the tower top:

l The natural condition for hoisting operation is satisfied, such as no fog and highvisibility. Hoisting operation is prohibited in adverse weather of wind, rain, and snow.

l Tools for hoisting operation are available, including the hoisting rope (bearing 100 kg)and the crown block, and the crown block is fixed tightly on the appropriate positionon the tower.

l Unpack the package to check whether the cabinet is in good condition. If it is, performthe hoisting operation.

During the hoisting operation, pay attention to the following:

l Do not bind the hoisting rope on the equipment's handle.l Before performing the hoisting operation, check whether the rope is bound tightly and

whether the screws of the installation bracket are fixed firmly.l Do not use the steel wire rope as the hoisting rope.l To avoid accidents, make sure that there is no personnel left around the tower

(especially under the RRU).

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5.5 Installation Modes and Installation Accessories

5.5.1 Installing AccessoriesTable 5-4 lists the installation accessories of BS8908 and the corresponding functions.

Table 5-4 BS8908 Installation Accessories and Functions

Name Appearance Functions

Wall-mounted

installation

component

Used in wall-mounted

installation and

pole-mounted

installation.

Pole-fixation

component

Used in installing one or

two BS8908s.

Pole-fixation

bracket component

Used in installing three

BS8908s.

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Name Appearance Functions

Cable rack Used to fix cables of

BS8908.

Lightning-

protection-box

installation

component

Used to fix the lightning

protection box.

5.5.2 Wall-Mounted Installation ModeIn this installation mode, after the wall-mounted installation component is fixed on the wall,BS8908 is fixed on the wall-mounted installation component through screws, as shown inFigure 5-4.

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Figure 5-4 Wall-Mounted Installation of BS8908

5.5.3 Pole-Mounted Installation ModeFigure 5-5 shows the case when one BS8908 is installed on the pole.

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Figure 5-5 Installing One BS8908 on Pole

Note:

In the case of installing one BS8908 on the pole, the pole's diameter must be within therange of 40 mm ~ 114 mm. The pole design complies with the GB/T8162 standard.

Figure 5-6 shows the case when two BS8908s are installed on the pole.

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Figure 5-6 Installing Two BS8908s on Pole

Note:

In the case of installing two BS8908s on the pole, the pole's diameter must be within therange of 40 mm ~ 114 mm. The pole design complies with the GB/T8162 standard.

Figure 5-7 shows the case when three BS8908s are installed on the pole.

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Figure 5-7 Installing Three BS8908s on Pole

Note:

In the case of installing three BS8908s on the pole, the pole's diameter must be within therange of 60 mm ~ 114 mm. The pole design complies with the GB/T8162 standard.

5.5.4 Slot Steel Installation Mode and Equilateral Angle SteelInstallation Mode

For equilateral angle steel installation, the length of each equilateral angle steel side is 63mm ~ 80 mm (GBT 9788, the angle steel number is 6.3, 7, 7.5, 8, 9, and 10).

For slot steel installation, the width of the slot steel is 50 mm ~ 100 mm (GB/T707, the typeis 5, 6.3, 6.5, 8, and 10). The slot steel type complies with the GB/T707 standard.

In both the two installation modes, the pole-mounted installation component is fixed onthe slot steel or the equilateral angle steel. For installation details, refer to that of thepole-mounted installation mode.

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5.6 R8860 Installation

5.6.1 Installing BS8908 on the Wall

Steps

1. According to the BS8908 installation position specified in the engineering design, drillholes on the wall and install the expansion bolts. The hole is 70 mm deep. Figure 5-8shows the drilling template.

Figure 5-8 Drilling Template

2. Install the wall-mounted installation component, and tighten it on the wall firmly, asshown in Figure 5-9.

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Figure 5-9 Installing Wall-Mounted Installation Component

1. Nut2. Spring washer

3. Big flat washer4. Wall-mounted plate

5. Insulating flange6. Expansion bolt

3. Mount the BS8908 cabinet on the wall-mounted installation component and align it withthe groove, as shown in Figure 5-10. Fix the cabinet on the wall-mounted installationcomponent through four M6 burglarproof screws, as shown in Figure 5-11.

Figure 5-10 Groove Schematic Diagram

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Figure 5-11 Fixing Cabinet

1. Wall-mountedinstallation component

2. Screw

– End of Steps –

5.6.2 Pole-Mounted Installation (with Pole Fixing Plate)

5.6.2.1 Installing One BS8908

Steps

1. Assemble the wall-mounted installation component and the pole fixing plate, as shownin Figure 5-12.

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Figure 5-12 Assembling Wall-Mounted+Pole-Mounted Component

1. Bolt2. Spring washer3. Big flat washer


5. Pole installationcomponent

2. Install the assembled components on the pole. Figure 5-13 illustrates the assembly.

Figure 5-13 Installing Pole Fixing Plate

1. Bolt2. Spring washer3. Big flat washer



3. Mount the BS8908 cabinet on the wall-mounted installation component and align itwith the slot. Fix the cabinet on the wall-mounted installation component through fourM6 burglarproof screws, as shown in Figure 5-14.

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2. Burglarproof screw


5.6.2.2 Installing Two BS8908s

Steps

1. Assemble the pole fixing plate and the two wall-mounted installation componentsrespectively, as shown in Figure 5-15.


1. Bolt2. Spring washer3. Flat washer


5. Insulating flange


2. Install the assembled components back to back on the pole, as shown in Figure 5-16.

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Figure 5-16 Installing Wall-Mounted+Pole-Mounted Component





3. Mount the BS8908 cabinets on the wall-mounted installation components andalign them with the slot. Fix the BS8908 cabinets on the wall-mounted installationcomponents through eight M6 burglarproof screws, as shown in Figure 5-17.



2. Screw


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5.6.2.3 Installing Three BS8908s

Steps

1. Assemble the pole fixing plate and the two wall-mounted installation componentsrespectively, as shown in Figure 5-18.






2. Install the assembled components on the pole, as shown in Figure 5-19. Tighten themwith the screws.

Figure 5-19 Installing Wall-Mounted+Pole-Mounted Component

3. Install the third wall-mounted component as shown in Figure 5-20. Tighten it with bolts.

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Figure 5-20 Installing the Third Wall-Mounted Installation Component

1. Extension board2. Insulating flange


4. Big flat washer

5. Spring washer6. Bolt

4. Mount the BS8908 cabinet on the wall-mounted installation component and align itwith the slot. Fix the cabinet on the wall-mounted installation component through M6burglarproof screws, as shown in Figure 5-21.


1. Screw


5.6.3 Installing Cable Rack

PrerequisitesBS8908 is installed.

Steps1. Install the cable rack at the bottom of BS8908, as shown in Figure 5-22.

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Figure 5-22 Installing Cable Rack

1. Cable rack 2. Screw

2. Figure 5-23 shows the installed cable rack.

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Figure 5-23 Installed Cable Rack


5.6.4 Installing Lightning Protection Box

Context

The installation method of lightning protection box is the same in various installation modesof BS8908.

The following takes installing one BS8908 on the pole for example to illustrate theinstallation procedure.

Steps

1. Install the lightning-protection-box installation component on the side of thewall-mounted installation component, as shown in Figure 5-24.

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Figure 5-24 Installing Lightning-Protection-Box Installation Component


2. Lightning-protection-box installationcomponent

3. Screw

2. Install the lightning protection box on the lightning-protection-box installationcomponent, as shown in Figure 5-25.

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Figure 5-25 Installing Lightning Protection Box


2. Lightning-protection-box installationcomponent

3. Lightning protectionbox

4. Big washer5. Spring washer6. Screw

3. Figure 5-26 shows the installed lightning protection box.

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Figure 5-26 Installed Lightning Protection Box


5.7 External Cable Installation

5.7.1 External Cable ConnectionsTable 5-5 shows the external cable connections of BS8908.

Table 5-5 External Cable Connections of BS8908

Cable Connection Connector and Cable Description

DC power cable Connecting the power supply

interface (POW) of BS8908 to

the interface of the power supply

equipment.

One end is the round connector and the

other end is reserved for the power cable to

be made on the engineering site. The cable

length depends on the actual condition.

AC power cable Connecting the power supply

interface (POW) of BS8908 to

the interface of the power supply

equipment.

One end is the round connector and the

other end is reserved for the power cable to

be made on the engineering site. The cable

length depends on the actual condition.

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Grounding cable Connecting a grounding bolt of

the BS8908 cabinet to the copper

grounding bar of the grounding

network.

The grounding cable of BS8908 is made

of the 25 mm2 yellow/green fire-resistant

multi-strand wires. One end of the cable

is in crimp connection with the double-hole

grounding terminal. The other end of the

cable is the round metal bare terminal,

which is called cabling lug or copper lug,

connecting with the copper grounding bar of

the grounding network.

Optical interface

cable

CPRI interface between BS8908

and RRU equipment.

Both ends of the cable are LC-type optical

connector. The fiber is either single-mode

fiber or multi-mode fiber.

75 Ω E1 cable Connecting E1 interface of

BS8908 and iBSC, or providing

physical transmission for E1

signal between cascaded

BS8908 systems.

One end of the cable is D-type 26-core

(3-row) straight-cable welded connector (pin),

and the other end of the cable is suspended

in the air. The cable is the 16-core 120 PCM

outdoor cable.

120 Ω E1 cable Connecting E1 interface of

BS8908 and iBSC, or providing

physical transmission for E1

signal between cascaded

BS8908 systems.


(3-row) straight-cable welded connector (pin),

and the other end of the cable is suspended

in the air. The cable is the 16-core 120 PCM

outdoor cable.

Ethernet

electrical

interface cable

Providing physical transmission

for Ethernet between iBSC and

BS8908.

The connector is the 8P8C straight-cable

crimping shielded connector. The cable is the

super category-5 shielded twisted pair.

External dry

contact and

RS485 cable

Connecting the environment

monitoring interface (MON) of

BS8908 cabinet to external

monitoring device or dry contact.


straight plastic connector (pin), and the other

end of the cable is made on the engineering

site. The cable is the balanced twisted pair.

AISG and tower

amplification

cable

Connecting the AISG interface of

BS8908 and the AISG equipment

to provide power supply and

communication signals.

One end of the cable is 8-core round

connector, and the other end of the cable

is D-type 9-core straight-cable welded

connector (pin). The cable is the AISG cable.

GPS antenna

interface cable

Connecting the GPS interface of

BS8908 to the GPS antenna.

One end of the cable is N-J connector, and

the other end of the cable is SMA connector.

The cable is the 50 Ω coaxial cable.

5-31




Antenna feeder

jumper

Connecting BS8908 to the main

antenna feeder.

The RF jumper is usually made of the 2 m

1/2" jumper. According to the actual condition,

installation personnel can make the cable to

be of one end being the N-type connector

(male connector) and the other end being the

DIN-type connector (female connector).

5.7.2 External Cable Installation FlowFigure 5-27 shows the recommended cable installation flow. Installation personnel canalso adjust the flow according to the actual condition.

5-32



Figure 5-27 External Cable Installation Flow

5.7.3 Installing Power Cable

Prerequisites

l Wear the antistatic wrist strap.l Cut a certain length of power cable according to actual requirement.l Make sure that the power supply branch output is disconnected.

5-33



Caution!

Check the cabinet's power supply status. Do not install the power cable when it islive, which, if not avoided, could result in death or serious injury.

Context

BS8908 provides two power supplymodes according to actual engineering plan: DC powersupply and AC power supply.

When the -48 V DC power supply is adopted, one end of the DC power cable is the roundconnector and the other end is reserved for the power cable to be made on the engineeringsite. The cable length depends on the actual condition.

Figure 5-28 shows the structure of the DC power cable of BS8908.

Figure 5-28 DC Power Cable Structure

1. 4-core round connector 2. End B signal label

Table 5-6 lists the core color and definition of the DC power cable.

Table 5-6 DC Power Cable Cores

Core Color Definition

Blue -48 V

Black -48 V GND

When the 110 V/220 V AC power supply is adopted, one end of the AC power cable isthe round connector and the other end is reserved for the power cable to be made on theengineering site. The cable length depends on the actual condition.

Figure 5-29 shows the structure of the AC power cable of BS8908.

5-34



Figure 5-29 AC Power Cable Structure

1. 4-core round connector 2. End B signal label

Table 5-7 lists the core color and definition of the AC power cable.

Table 5-7 AC Power Cable Cores

Core Color Definition

Brown L (live wire)

Yellow/green PE

Blue N (neutral wire)

Steps1. Remove the protective cap of the power interface.

2. Align end A of the power cable with the power interface's red point, insert it into theinterface, and tighten it.

3. Protect end A with the insulating tape.

4. Peel off the sheath of end B of the power cable. Connect the power supply equipmentaccording to the core color.

5. Paste labels at the two ends of the power cable.

6. Fix the power cable.


5.7.4 Installing Grounding Cable

Prerequisites

l Wear the antistatic wrist strap.l The cabinet installation is completed.l The grounding system and connection points of indoor and outdoor copper grounding

bars have been constructed completely.

ContextThe grounding cable of BS8908 is made of the 25 mm2 yellow/green fire-resistantmulti-strand wires. End A of the cable is in crimp connection with the double-hole

5-35



grounding terminal, and end B of the cable is the round metal bare terminal, which iscalled cabling lug or copper lug, as shown in Figure 5-30.

Figure 5-30 Grounding Cable Structure

Steps

1. Hang the copper lugs at end A of the grounding cable on the two grounding bolts ofthe BS8908 cabinet, and fix them.

2. Connect the copper lug at end B of the grounding cable to the copper bar of thegrounding network, and fix it with the bolt, as shown in Figure 5-31.

Figure 5-31 Copper Bar of Grounding Network

3. Paste the label on the grounding cable.

4. Test the grounding resistance, and make sure that the resistance is less than 5 Ω.


5.7.5 Installing Abis E1 Cable

Prerequisites

Wear the antistatic wrist strap.

The BS8908 cabinet is installed and fixed.

5-36



Context

The Abis E1 cable provides physical transmission for E1 signal between BS8908 and iBSCand between cascaded BS8908 systems.

According to the actual engineering plan, the Abis E1 cable has two types: 75 Ω E1 cablefor Abis and 120 Ω E1 cable for Abis.

The E1 cable for Abis is the 16-core PCM outdoor cable. Figure 5-32 shows itsappearance.

Figure 5-32 E1 Cable

1. Waterproof washer2. End A label

3. Fixing block4. End B label

Table 5-8 describes the E1 cable for Abis of the corresponding relationship between thecore and the signal.

Table 5-8 Description of Cores of E1 Cable for Abis

Core Color Signal Core Color Signal

Blue/Red1 TX0+ Grey/Red1 TX2+

Blue/Black1 TX0- Grey/Black1 TX2-

Pink/Red1 RX0+ Blue/Red2 RX2+

Pink/Black1 RX0- Blue/Black2 RX2-

Green/Red1 TX1+ Pink/Red2 TX3+

Green/Black1 TX1- Pink/Black2 TX3-

Yellow/Red1 RX1+ Green/Red2 RX3+

Yellow/Black1 RX1- Green/Black2 RX3-

Steps

1. Bind the cable tie at the bottom of the cable rack corresponding to the E1 (E1/T1)interface.

2. Make the E1 cable pass through the cable tie, tighten it to the cable rack, and fastenthe cable tie.

5-37



3. Remove the protective cap of the E1 (E1/T1) interface, connect end A of the E1 cableto the E1 (E1/T1) interface, and fasten the screw at the interface.

4. For the E1 cable, connect end B to the cable trough according to Table 5-8.


5.7.6 Installing Abis Ethernet Cable

Prerequisites



Context

The Abis Ethernet cable provides physical transmission for Ethernet between iBSC andBS8908.

The Abis Ethernet cable is made of outdoor super category-5 shielded network cable.The connector is plastic 8P8C straight-cable crimping shielded connector (with the hookprotection). Figure 5-33 shows its appearance.

Figure 5-33 Abis Ethernet Cable

1. Waterproof cap 2. Fixing block

Steps

1. Bind the cable tie at the bottom of the cable rack corresponding to the Abis interface.

2. Make the Abis Ethernet cable pass the cable tie, tighten it to the cable rack, and fastenthe cable tie.

3. Remove the protective cap of the corresponding jack. Remove the waterproof capfrom end A of the Abis Ethernet cable.

4. Connect end A of the Abis Ethernet cable to the external interface of BS8908, andinsert the waterproof connector.

5. Connect end B of the Abis Ethernet cable to the switch.

6. Paste labels at the two ends of the Abis Ethernet cable.


5-38



5.7.7 Installing Fiber Connecting RRU

Prerequisites

The RRU cabinet to be cascaded is installed and fixed.

Context

Figure 5-34 shows the fiber structure of cascaded BS8908.

Figure 5-34 Fiber Connecting RRU

1. Waterproof heat-shrinkabletube

2. Waterproof cap3. Fixing block

When BS8908 is cascaded with RRU, use fiber to connect the fiber interface (LC1/2) ofBS8908 with the baseband-RF fiber interface of RRU.

Steps

1. Bind the cable tie at the bottom of the cable rack corresponding to the fiber interface(LC1/2).

2. Make the fiber pass through the cable tie, tighten it to the cable rack, and fasten thecable tie.

3. Remove the protective cap of the corresponding jack. Remove the dustproof cap andthe waterproof cap from the fiber.

4. Insert the LC connector into the fiber interface of BS8908, and cover it with thewaterproof cap.

Caution!

During the installation, hold the LC connector with hand. Do not hold the fiber lest thefiber might be broken.

5. Paste the direction labels at both ends of the fiber.


5-39



5.7.8 Installing Environment Monitoring Cable

Prerequisites



Context

The environment monitoring cable is between the BS8908 system and the externalenvironment monitoring system. It provides the connection between dry contact andRS485 monitoring signal.

For the environment monitoring cable, end A is D-type 15-core straight plastic connector(pin), and end B is made on the engineering site. Figure 5-35 shows the structure of theenvironment monitoring cable.

Figure 5-35 Environment Monitoring Cable

1. Waterproof washer2. D-type 15-core straight

plastic connector

3. End A signal label4. Fixing block5. End B signal label

Table 5-9 lists the core color and signal description of end B.

Table 5-9 Core Color and Signal Description

Core Color Signal Core Color Signal

White(Blue) RS485_TX+ Red(Brown) GND

Blue RS485_TX- Brown(Red) GND

White(Green) RS485_RX+ Red(Blue) NODE_IN2+

Green RS485_RX- Blue(Red) NODE_IN2-

White(Orange) GND Red(Orange) NODE_IN3+

Orange GND Orange(Red) NODE_IN3-

White(Brown) NODE_IN1+ Red(Green) NODE_IN4+

Brown NODE_IN1- Green(Red) NODE_IN4-

5-40



Steps

1. Bind the cable tie at the bottom of the cable rack corresponding to the environmentmonitoring interface MON.

2. Make the environment monitoring cable pass through the cable tie, tighten it to thecable rack, and fasten the cable tie.

3. Remove the protective cap of the environment monitoring interface MON, connect endA of the environment monitoring cable to the MON interface of BS8908, and fasten thescrew at the interface.

4. Connect end B of the environment monitoring cable to the external monitoringequipment or dry contact.

5. Paste the label at both ends of the cable.


5.7.9 Installing AISG Control Cable

Context

The AISG control cable provides power supply and communication signal between BS8908system and AISG equipment.

Figure 5-36 shows the structure of the AISG control cable.

Figure 5-36 AISG Control Cable Structure

1. Waterproof washer 2. Fixing block

Steps

1. Bind the cable tie at the bottom of the cable rack corresponding to the AISG debugginginterface.

2. Make the AISG control cable pass through the cable tie, tighten it to the cable rack,and fasten the cable tie.

5-41



3. Remove the protective cap of the AISG debugging interface, connect end A of theAISG control cable to the debugging interface (AISG) of BS8908, and fasten the screwat the interface.

4. Connect end B of the AISG control cable to the control interface of the electricalantenna.


5.7.10 Installing GPS Cable

Prerequisites



Context

The GPS cable provides physical transmission for the GPS signal between the BS8908system and the GPS antenna.

One end of the GPS cable is N-J connector, and the other end of the cable is SMAconnector. The cable is the 50 Ω coaxial cable.

Steps

1. Connect end A of the GPS cable to the GPS cable interface (GPS) of the BS8908cabinet.

2. Connect end B of the GPS cable to the GPS antenna feeder.

3. Perform lightning-protection and waterproof handling for the GPS cable.

4. Fix the GPS cable.


5.7.11 Installing Antenna Feeder Jumper

Context

The antenna feeder jumper is the cable connecting the main feeder and the antenna feederinterface of the BS8908 cabinet. Usually, the antenna feeder jumper is installed after themain feeder is installed.

Usually, the RF jumper is made of 1/2" jumper with a length of 2 m. The RF jumper canalso be made according to actual requirement.

Figure 5-37 shows the installation position of the antenna feeder jumper.

5-42



Figure 5-37 Antenna Feeder Jumper Installation Position

Steps

1. Connect the DIN-type male connector of the antenna feeder jumper with the DIN-typefemale connector of the main feeder.

2. Connect the DIN-type male connector of the antenna feeder jumper with theRF-antenna interface of the cabinet.

3. Perform waterproof handling for the antenna feeder, equipment interface, andinterconnection connectors.


5-43




5-44


FiguresFigure 1-1 BS8908 Position in GSM Network............................................................ 1-2

Figure 1-2 Base Station (BBU+RRU) ........................................................................ 1-3

Figure 1-3 Distributed Base Station System Structure............................................... 1-4

Figure 1-4 Cabinet Appearance ................................................................................ 1-4

Figure 1-5 BS8908 Operation and Maintenance ....................................................... 1-7

Figure 3-1 External Interfaces at Cabinet Bottom...................................................... 3-1

Figure 3-2 BS8908 Indicators ................................................................................... 3-2

Figure 3-3 BS8908 Hardware System....................................................................... 3-4

Figure 3-4 BS8908 Software Architecture ................................................................. 3-6

Figure 4-1 Star Networking ....................................................................................... 4-1

Figure 4-2 Cascading Networking ............................................................................. 4-2

Figure 4-3 O2 ~ O4 Configuration ............................................................................. 4-2

Figure 4-4 O5 ~ O8 Configuration ............................................................................. 4-3

Figure 4-5 O9 ~ O12 Configuration ........................................................................... 4-3

Figure 4-6 RRU Function Configuration Diagram ...................................................... 4-4

Figure 4-7 BBU Function Configuration Diagram ...................................................... 4-4

Figure 5-1 Package of BS8908 ................................................................................. 5-9

Figure 5-2 Unpacking and Inspection Flow ............................................................. 5-10

Figure 5-3 BS8908 Installation Flow........................................................................ 5-11

Figure 5-4 Wall-Mounted Installation of BS8908...................................................... 5-14

Figure 5-5 Installing One BS8908 on Pole .............................................................. 5-15

Figure 5-6 Installing Two BS8908s on Pole............................................................. 5-16

Figure 5-7 Installing Three BS8908s on Pole .......................................................... 5-17

Figure 5-8 Drilling Template .................................................................................... 5-18

Figure 5-9 Installing Wall-Mounted Installation Component ..................................... 5-19

Figure 5-10 Groove Schematic Diagram ................................................................. 5-19

Figure 5-11 Fixing Cabinet ...................................................................................... 5-20

Figure 5-12 Assembling Wall-Mounted+Pole-Mounted Component......................... 5-21

Figure 5-13 Installing Pole Fixing Plate ................................................................... 5-21

Figure 5-14 Fixing Cabinet...................................................................................... 5-22


Figure 5-16 Installing Wall-Mounted+Pole-Mounted Component ............................. 5-23

I




Figure 5-19 Installing Wall-Mounted+Pole-Mounted Component ............................. 5-24

Figure 5-20 Installing the Third Wall-Mounted Installation Component .................... 5-25


Figure 5-22 Installing Cable Rack ........................................................................... 5-26

Figure 5-23 Installed Cable Rack ............................................................................ 5-27

Figure 5-24 Installing Lightning-Protection-Box Installation Component .................. 5-28

Figure 5-25 Installing Lightning Protection Box ....................................................... 5-29

Figure 5-26 Installed Lightning Protection Box ........................................................ 5-30

Figure 5-27 External Cable Installation Flow ........................................................... 5-33

Figure 5-28 DC Power Cable Structure................................................................... 5-34

Figure 5-29 AC Power Cable Structure ................................................................... 5-35

Figure 5-30 Grounding Cable Structure .................................................................. 5-36

Figure 5-31 Copper Bar of Grounding Network ....................................................... 5-36

Figure 5-32 E1 Cable.............................................................................................. 5-37

Figure 5-33 Abis Ethernet Cable ............................................................................. 5-38

Figure 5-34 Fiber Connecting RRU......................................................................... 5-39

Figure 5-35 Environment Monitoring Cable ............................................................. 5-40

Figure 5-36 AISG Control Cable Structure .............................................................. 5-41

Figure 5-37 Antenna Feeder Jumper Installation Position ....................................... 5-43

II

TablesTable 3-1 External Interfaces .................................................................................... 3-1

Table 3-2 Indicators and Buttons............................................................................... 3-3

Table 3-3 Cabinet Hardware Composition ................................................................. 3-4

Table 4-1 Typical System Configuration Specifications.............................................. 4-2

Table 5-1 Safety Symbols and Meanings .................................................................. 5-1

Table 5-2 Working Temperature and Humidity Requirement for BS8908 ................... 5-5

Table 5-3 Tools and Instruments ............................................................................... 5-7

Table 5-4 BS8908 Installation Accessories and Functions....................................... 5-12

Table 5-5 External Cable Connections of BS8908................................................... 5-30

Table 5-6 DC Power Cable Cores ........................................................................... 5-34

Table 5-7 AC Power Cable Cores ........................................................................... 5-35

Table 5-8 Description of Cores of E1 Cable for Abis................................................ 5-37

Table 5-9 Core Color and Signal Description........................................................... 5-40

III

Tables


GlossaryAISG- Antenna Interface Standards Group

Abis- Abis Interface between BSC and BTS

BSC- Base Station Controller

BTS- Base Transceiver Station

CN- Core Network

CS- Circuit Service

DL- Downlink

DPD- Digital Pre-Distortion

EDGE- Enhanced Data rates for GSM Evolution

FP- Frame Protocol

GPRS- General Packet Radio Service

GPS- Global Positioning System

GSM- Global System for Mobile Communication

LMT- Local Maintenance Terminal

LTE- Long Term Evolution

MS- Mobile Station

OAM- Operation, Administration and Maintenance

V


PCB- Printed Circuit Board

PS- Packet Service

RNC- Radio Network Controller

SDR- Software Defined Radio

UE- User Equipment

UL- Uplink

UMTS- Universal Mobile Telecommunication System

VI

ZXSDR BS8908 G060 (V1.00) Outdoor GSM Mode Micro BTS User Manual

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