principle and hardware structure of zxsdr bs8900 c100 74

ZXSDR BS8900 C100Principle and Hardware Structure

Training Manual

8.0.2.005

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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Copyright 2010 ZTE CORPORATION.

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ZTE CORPORATION or its licensors may have current or pending intellectual property rights or applications covering the subjectmatter of this document. Except as expressly provided in any written license between ZTE CORPORATION and its licensee,the user of this document shall not acquire any license to the subject matter herein.

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Publishing Date (MONTH/DATE/YEAR) : 4/30/2010

ZXSDR B8200C100 Principle andHardware StructureAfter you have completed this course, you

will be able to:

>> Master the hardware structure ofZXSDR BS8900 C100

>> Master the board function of ZXSDRBS8900 C100

>> Master ZXSDR BS8900 C100 C806C100 networking

Confidential and Proprietary Information of ZTE CORPORATION 1

ZXSDR BS8900 C100 Training Manual

Chapter1 Product OverviewAfter you have completed this chapter, you will know:

>> Position in CDMA Network

>> Product Functions

>> Product Features

>> Appearance

>> External Interfaces

>> Technical Indices

>> Working Principle

1.1 Position in CDMA Network

Figure 1 illustrates the position of ZXSDR BS8900 C100 in a typicalCDMA mobile communication network.

FIGURE 1 ZXSDR BS8900 C100 POSITION IN THE NETWORK

Table 1 lists the NE terms used in Figure 1.

2 Confidential and Proprietary Information of ZTE CORPORATION

Chapter 1 Product Overview

TABLE 1 NE TERMS DESCRIPTION

NE-Short Form NE-Expanded Form

MS Mobile Station

RRU Remote Radio Unit

RSU RF System Unit

BBU BaseBand Unit

BSC Base Station Controller

PCF Packet Control Function

MSC Mobile Switching Center

AGW ASN GateWay

PDSN Packet Data Service Node

MGW Media GateWay

ZXSDR BS8900 C100 is a macro BTS with integration of BBU andRSUs. It locates between BSC and MS to fulfill three functions:

Communication with MS under its coverage through Um inter-face

Communication with BSC through Abis interface

Control over radio channels

1.2 Product Functions

Table 2 lists the product functions of ZXSDR BS8900 C100.

TABLE 2 ZXSDR BS8900 C100 PRODUCT FUNCTIONS

Category Function

Baseband modulation/demodulation. A singlechassis can support 48 CS of 1x or DO channelresources at most.

Supports radio resource management.

Supports call processing

Supports handoff control

Supports power control

Baseband

Supports GPS timing and synchronization



Category Function

Supports 800 MHz and 450 MHz bands

Supports RF modulation/demodulation

Supports duplex RF transmitting and receiving

Supports low-noise Amplification of RF signalsreceived

Supports amplification of RF signals transmitted

RF

Supports RF transmitter and receiver

Baseband-RF interface supports CPRI.

Abis interface supports IP Over Ethernet access

Abis interface supports IP Over E1/T1 access

Interface

Air interface complies with IS-2000 ReleaseAstandards and IS-856-A standard.

Supports star and chain networking of externalRRUs.

Supports cascaded networking of external RRUsup to 6 levels.

Supports RF combination cabinets (diversityout/in)

Supports BBU stack networking

Networking

Abis interface IP Over E1/T1 access supportsDaisy chain cascade.

Supports over/under voltage alarm of inputpower supply.

Supports over/under voltage alarm of outputpower supply.

Supports over current alarm of power supply.

Supports environment humidity alarm.

Environment Moni-toring

Provides external RS232/RS485 monitor com-munication interface.



Category Function

Support front maintenance.

Supports remote version upgrade of such soft-ware as FPGA/BOOT/DSP/CPU.

Supports remote resetting and power-off ofservice boards.

Supports ESN query.

Supports query of baseband power, RF powerand antenna port power.

Supports auto scaling.

Supports RSSI query.

Supports spectrum query of reverse signals re-ceived per carrier.

Supports antenna interface SWR monitoralarm.

Maintenance Test

Provides protection of over power amplification,over temperature and SWR alarm.

Reliability Provides reverse power connection protection.

Application Scenarios Urban and rural areas with heavy traffic

1.3 Product Features

ZXSDR BS8900 C100 product features are listed as follows:

Applicable to various scenarios such as those outdoor withmedium or high capacity, broad coverage and multi bands.

Saves labour and engineering construction expenses.

Shared 1x and DO transmission saves equipment rent.

Convenient for capacity expansion hence has the initial net-working cost reduced.

It supports single carrier single sector, multi carrier single sec-tor and multi carrier multi sector. Flexible configuration en-ables more or less cabinets.

Low power and electricity consumption.

Compared with traditional BTS, it is low in power consumptionso as to reduce the investment in power supply and save net-work operation fees.

Easy for network construction. Abis interface may bring theoperators the following benefits via Ethernet access plans:

It is relatively cheaper to construct or rent IP networks.

Ethernet access provides even broader bandwidth so tomeet the demands called by the rapid development of mul-timedia service such as data and video.



Compared with E1/T1 mode, IP networking is flexible andeasy for cross networking capacity expansion.

High in capacity so as to reduce capital payout.

A single cabinet can support up to 48 CS of 1x or DO chan-nel resources.

RSU supports 8 carriers at most.

Supports the smooth evolution to the future products by moreforward-looking and generic BTS platform .

BBU adopts a B3G and 4G platform that gears to the fu-ture. One hardware platform may fulfills systems of differ-ent standards. one or together.

It simplifies management by combining various BTS,s intoone of multi-mode.

Operators may select the network evolution directionsmore flexibly while the users may be impressed by itstransparence and smoothness.

Adopts more advanced micro communications computation ar-chitecture (TCA).

Standard template, compact design and blocking buildingarchitecture brings effectiveness of operation and a highperformance price ratio.

It is more reliable by power-on management.

ZTE was the first to put forward uTCA based BTS.

1.4 Appearance

ZXSDR BS8900 C100 supports two configuration modes: One isthat one baseband cabinet (BC8910) and one storage battery cab-inet (PC8910) overlap and one RF cabinet (RC8910) is placed indi-vidually, as shown in Figure 2, and the other is that the basebandcabinet (BC8910) and the RF cabinet (RC8910) overlap and nostorage battery cabinet (PC8910) is equipped, as shown in Figure3.



FIGURE 2 ZXSDR BS8900 C100 APPEARANCE MODE I

1. Baseband cabinet2. Storage battery cabinet3. RF cabinet



FIGURE 3 ZXSDR BS8900 C100 APPEARANCE MODE II

1. Baseband and power cabinet 2. RF cabinet

1.5 External Interfaces

ZXSDR BS8900 C100 external interfaces are distributed in thepanels of baseband subrack, ZXDU58 B121 subrack, fan subrack,power distribution subrack and RF subrack.



BasebandSubrack External

Interfaces

Figure 4 shows the position of external interfaces in the basebandsubrack panel.

FIGURE 4 BASEBAND SUBRACK EXTERNAL INTERFACES

1. -48V -48V RTN2. TX0~5 RX0~53. ETH14. ETH05. TX RX

6. REF7. EXT8. MON/Abis9. MON

Table 3 lists the description of baseband subrack external inter-faces.

TABLE 3 BASEBAND SUBRACK EXTERNAL INTERFACES DESCRIPTION

Interface Description ModuleLocated

-48V -48V RTN -48 V DC power input interface PM

TX0~5 RX0~5 Baseband-RF optical interface FS

ETH1 Used for base station debuggingor local maintenance

CC

ETH0 Electrical interface to connectBSC

CC

TX RX Optical interface to connect BSC CC

REF External GPS antenna CC

EXT Connects external receiver CC

MON/Abis Includes Abis, RS232, RS485 anddry contact

SA

MON RS232 interface for powermodule debugging

PM



ZXDU58 B121Subrack External

Interface

Figure 5 shows the position of ZXDU58 B121 subrack external in-terface in the panel.

FIGURE 5 ZXDU58 B121 SUBRACK EXTERNAL INTERFACE

1. AC

Fan SubrackExternal

Interfaces

Figure 6 shows the position of fan subrack external interfaces inits panel.

FIGURE 6 FAN SUBRACK EXTERNAL INTERFACES

1. MON2. POWER

3. GND

Table 4 lists the description of fan subrack external interfaces.

TABLE 4 FAN SUBRACK EXTERNAL INTERFACES DESCRIPTION

Interface Description

MON Fan monitoring interface

POWER Connected to the fan power supply of powerdistribution subrack

GND Grounding terminal



PowerDistribution

Subrack ExternalInterfaces

Figure 7 shows the position of external interfaces in the backplaneof power distribution subrack.

FIGURE 7 POWER DISTRIBUTION SUBRACK EXTERNAL INTERFACES

1. -48 V 2. -48 V RTN

Table 5 describes the power distribution subrack external inter-faces.

TABLE 5 POWER DISTRIBUTION SUBRACK EXTERNAL INTERFACESDESCRIPTION


-48 V External -48 V DC input

-48 V RTN -48 V DC ground



RF SubrackExternal

Interfaces

Figure 8 shows the position of RF subrack external interfaces inRSU panel.

FIGURE 8 RF SUBRACK EXTERNAL INTERFACES

1. ANT2(RX)2. ANT1(TX/RX)3. RXout4. TX1 RX15. TX2 RX2

6. DBG7. MON8. AISG9. POWER10. RXin

Table 6 lists the description of RF subrack external interfaces.



TABLE 6 RF SUBRACK EXTERNAL INTERFACES DESCRIPTION

Interface Description ModuleLocated

ANT2(RX) Completes connection to theantenna of diversity receivingchannel

RSU

ANT1(TX/RX) Completes connection to theantenna of main transmitting andreceiving channels

RSU

RXout Frequency extension outputinterface to output main receivedsighnals

RSU

TX1 RX1 CPRI optical interface to connectBBU or the superior RSU

RSU

TX2 RX2 CRPI optical interface to connectthe subordinate cascaded RSU

RSU

DBG Completes network interfacedebugging and interface test

RSU

MON Provides dry contact inputinterface and RS485 environmentmonitoring interface

RSU

AISG Completes the connection toantenna feeder AISG interface

RSU

POWER -48 V DC input interface RSU

RXin Frequency extension inputinterface to input diversityreceived signals

RSU

1.6 Technical Indices

1.6.1 Engineering Indices

Table 7 gives the engineering indices of the ZXSDR BS8900 C100.

TABLE 7 ENGINEERING INDICES

Name Index

Dimension 1800 mm600 mm600 mm (H W D)

Weight < 220 kg (single cabinet, not including BBU, RSU,power supply and storage battery)

Power supply - 48 V DC: - 40 V ~ - 57 V



Name Index

Workingtemperature

- 40 ~ +55 (- 40 ~ +131 )

Overall powerconsumption

< 3000W (full configuration)

Workinghumidity

5% RH ~ 98% RH

Groundingresistance

< 5

1.6.2 Performance Indices

Capacity Indices A single cabinet supports 48 carrier sectors (16C3S or 8C6S)at most.

Two RF cabinets in heap can support 96 carrier sectors (32C3Sor 16C6S) at most.

Reliability Indices ZXSDR BS8900 C100 reliability indices are described as follows:

Mean time between failure (MTBF) is more than 100,000 hours.

Availability is more than 99.9999.

1.6.3 Clock Parameters

Table 8 lists the description of ZXSDR BS8900 C100 clock param-eters.

TABLE 8 ZXSDR BS8900 C100 CLOCK PARAMETERS

Parameter Description

Frequency Reference 10 MHz with its inaccuracy less than 10-10 inGPS lock status or holdover status.

Temperature


1.6.4 RF Indices

ZXSDR BS8900 C100 RF indices comply with following standards:

3GPP2 C.S0010-C, Recommended Minimum PerformanceStandards for cdma2000 Spread Spectrum Base Station.

3GPP2 C.S0032-A, Recommended Minimum PerformanceStandards for CDMA2000 High Rate Packet Data Access Net-work.

TransmitterIndices

Table 9 lists the description of transmitter indices.

TABLE 9 TRANSMITTER INDICES

Item Index Note

WorkingFrequency Bnad

800 MHz (Band Class 0)450 MHz (Band Class 5)

3GPP2C.S0010-C

OutputFrequencyTolerance

0.05 ppm

Channel OutputSpectrumOccupiedBandwidth

1.23 MHz (Band Class 0)

Antenna PortTransmissionPower

80 W

TransmissionPower Stability

Rated power - 4 dB < total power 4MHz OFFSET:< -36dBm(RBW 1kHz) @ 9KHz


Item Index Note

TransmitterIntermodulationPerformance

One BTS transmits signals at therated power while another at thatminus 30dB. Combined in theantenna port, their intermodulationmeets the demand of BTS conductedspurious emissions, with the signalintermediate frequency difference as1.25 M.

3GPP2C.S0010-C

Pilot TimeTolerance

Pilot to nominal PN time tolerance:


Item Index Note

Noise Figure


FIGURE 9 SYSTEM ACHITECTURE

In ZXSDR BS8900 C100, BBU takes charge of the processing ofbaseband part while RSU the RF part. Their functions are describedas follows:

CC is the main control module of BBU and even of ZXSDRBS8900 C100. It completes the conversion of GPS systemclock, the output of RF reference clock, the termination of Abisinterface, the exchange of GE Ethernet, the modulation anddemodulation of baseband, and the supervision and manage-ment of the whole ZXSDR BS8900 C100.

CH module is classified into CHV and CHD. CHV supportsCDMA2000 1x services and CHD supports EV-DO services. CHmodule completes the modulation and demodulation of base-band signals and implements many key CDMA technologies(such as diversity technique, RAKE receiving, softer handoffand power control).

FS module provides the multiplexing, demultiplexing, frameencoding and frame decoding of baseband signals and ex-changes data with RSU via CPRI optical interface.

SA module fulfils environment monitoring for ZXSDR BS8900C100 cabinet, provides Abis interface function for the Abis con-nection that adopts T1/E1, and also conducts dry contact mon-itoring access.

In the forward services, RSU first converts baseband signal intocarrier signal before signal amplification, and then sends theradio signal from antenna after signal filtering. In the reverseservices, RSU receives RF signal and transforms it into electri-cal signal after filtering and down conversion, and then makesdemodulation of the electrical signal, finally sends the demod-ulated signal through optical interface for BBU to process.

1.7.2 Signal Flow

1.7.2.1 Service Signal Flow

Figure 10 shows the service signal flow of ZXSDR BS8900 C100.



FIGURE 10 SERVICE SIGNAL FLOW

The following content describes the service signal flow of ZXSDRBS8900 C100.

Forward Service

i. Service data from BSC flows into BBU via SA and conductsAbis interface IP transmission protocol termination in CCmodule.

It is necessary to complete cUDP/PPPMUX/MP/HDLC proto-col and NAT conversion for E1/T1 access.

NAT conversion for Abis interface with GE/FE access de-pends on the specific service application.

ii. The data is sent to CH (CHV or CHD) for CDMA modulationand IQ data multiplexing.

iii. The modulated and multiplexed data is sent to FS for IQ ex-change, demultiplexing, interleaving, frame encoding andparallel-to-serial conversion.

iv. The data is distributed to RSU through CPRI optical inter-face.

v. The baseband signal is sent out through antenna after car-rier modulation and amplification by RSU.

Reverse Service

i. The reverse CDMA RF signal received by antenna trans-forms into baseband digital signal after RSU filtering anddown conversion and is sent to BBU through CPRI inter-face.

ii. FS completes IQ exchange and demultiplexing of the re-verse service signal from RSU and sends it to CH.

iii. CH implements the CDMA demodulation of the reverseservice signal, packets the service message into Ethernetframe and transmits it to CC through GE.

iv. After processing of Abis interface IP transmission protocolin CC, the reverse service signal is sent to BSC via E1/T1/GE Abis interface.



Note:

If the Abis interface is of E1/T1 access, the signal needs transitionand protection by SA board. If it is of GE/FE access, the Abisinterface is connected directly to CC.

1.7.2.2 Control Signal Flow

CC is the main control function board of ZXSDR BS8900 C100 todistribute control signals into other boards. Figure 11 shows thecontrol signal flow.

FIGURE 11 CONTROL SIGNAL FLOW

1.7.2.3 Clock Signal Flow

ZXSDR BS8900 C100 system clock is distributed by CC to otherboards and distributed via optical interface to RSUs.

Figure 12 shows the system clock signal flow of ZXSDR BS8900C100.

FIGURE 12 CLOCK SIGNAL FLOW

The CC clock in Figure 12 takes GPS system as reference. The clockreference can be GPS output clock reference, the upper-level clockof Abis/Iub E1/T1 synchronization, or the BITS reference clock in-put by CC front panel. Its selection depends on the specific appli-cations.



1.7.3 Power Distribution

M02 CabinetPower

Distribution

M02 power subsystem consists of primary power supply, storagebattery and power monitor unit to provide DC and AC.

The primary power supply and power monitor unit together formsthe AC/DC power distribution subrack.

Power input (220V/110V: L, N and PE) and output (48V and 48VGND) are connected at the rear of AC/DC power distribution sub-rack. Air switch and arrester are placed in its front panel, conve-nient for disassembly and maintenance.

RF Cabinet PowerDistribution

ZXSDR BS8900 C100 supports 48 V DC only. RF cabinet powersupply is provided by M02. The power supply and protectiveground are led in through the connection hole between M02 andRF cabinets and then directly connected to PDM. M02 cabinettakes over the arrestor, filter and chief circuit-breaker.

PDM consists of 7 branch breakers to control over the power distri-bution to 6 RSUs and FCE module (including fan). The groundingbar lies beneath RSU to provide low-resistance path for RSU pro-tective ground.

Figure 13 shows the RF cabinet power distribution principle.

FIGURE 13 RF CABINET POWER DISTRIBUTION PRINCIPLE



1.7.4 Ventilation and Heat-dissipationPrinciples

M02 CabinetVentilation andHeat-dissipation

M02 fulfills its ventilation and heat-dissipation via a heat ex-changer. Figure 14 and Figure 15 shows the principle in detailwith black arrows to indicate air directions. The rectifiers is in afront/rear air channel while BBU and transmission equipments arein left/right air channels.

FIGURE 14 M02 CABINET VENTILATION AND HEAT-DISSIPATION (FRONTVIEW)



FIGURE 15 M02 CABINET VENTILATION AND HEAT-DISSIPATION (SIDEVIEW)

RF CabinetVentilation andHeat-dissipation

ZXSDR BS8900 C100 RF cabinet adopts direct external air coolingfor heat-dissipation.

Air goes into the RF cabinet front door then gets to the air channelvia intake vent at the cabinet top. A single layer of axial-flow fansblow downwards through fan subrack, power distribution subrackand RSUs (adjacent ones are separated with sheets). Air finallygoes out of the cabinet via exhaust vent at the bottom of rear door.

Figure 16 shows the principle in detail with black arrows to indicateair directions.



FIGURE 16 RF CABINET VENTILATION AND HEAT-DISSIPATION (LEFT SIDEVIEW)

1. Fan subrack2. Power distribution subrack3. Front door4. Air exhaust vent5. RSU6. Air intake channel


Chapter2 CabinetAfter you have completed this chapter, you will know:

>> Cabinet Technique Feature

>> Baseband Power Cabinet Outer Structure

>> Baseband Power Cabinet Inner Structure

>> RF Cabinet Outer Structure

>> RF Cabinet Inner Structure

>> Storage Battery Cabinet

2.1 Cabinet Technique Feature

ZXSDR BS8900 C100 is featured by the following items:

1. The cabinet is painted in light grey, pleasant to eyes.

2. The cabinet design is technique oriented with reasonable layoutand color arrangement.

3. The cabinet is waterproof treated, equipped with a heat-dis-sipation window, a sun shield and a base against theft andoverall sealed for dust-proof.

4. The equipments all adopt bolts connection with lap seams filledby shielding material to make every component well contactedand spray coated after conduction oxidation.

5. Special requirements are made on the package of importantcomponents. Prior protection should be taken to connectorsduring overall cabinet transportation.

2.2 Baseband Power Cabinet OuterStructure

Figure 17 shows the baseband power cabinet outer structure.



FIGURE 17 BASEBAND POWER CABINET OUTER STRUCTURE

Cabinet dimension: 900 mm 600mm 600 mm (height width depth)

Note:

It is common to place the baseband power cabinet on a storagebattery cabinet or an RF cabinet, in which case a sun shield isneeded but the base is not necessary.

Table 11 describes the components outer the baseband power cab-inet.

TABLE 11 BASEBAND POWER CABINET OUTER COMPONENTS DESCRIPTION

Component Description

Lifting Eyes Used in cabinet installation or removal.

Sun Shield Prevents the equipments from sunshine.

Handle Used to open and close the cabinet door.Equipped with alarm lock.

Vent Helps cabinet heat-dissipation.

2.3 Baseband Power Cabinet InnerStructure

Figure 18 shows the baseband power cabinet inner structure.


Chapter 2 Cabinet

FIGURE 18 BASEBAND POWER CABINET INNER STRUCTURE

1. Heat exchanger2. Reserved space3. Baseband subrack4. Cable tray

5. Lightning subrack6. Power supply subrack7. File box8. Cabinet door

Table 12 describes the configuration inside the baseband powercabinet.

TABLE 12 BASEBAND POWER CABINET INNER STRUCTURE DESCRIPTION

Unit Height Configuration

Heat exchanger 4 U Compulsory

Transmission subrack 4 U reserved Optional

Baseband subrack 2 U Compulsory

Cable tray 1 U Optional

Lightning subrack 1 U Optional

Power supply subrack 6 U Compulsory

1 U = 4.44 cm

2.3.1 Heat Exchanger

The heat exchanger has been installed inside baseband power cab-inet before equipment consignment.

Judging from the feedback indices from temperature sensor, theheat exchanger provides cooling or heating function to keep a sta-ble temperature inside the cabinet and ensure the normal opera-tion of equipments.



The heat exchanger consists of extracting core, heater, externalventilation fan, internal ventilation fan and control panel. Two airchannels (inner and outer) are set to implement air convection.Figure 19 shows the heat exchanger structure.

FIGURE 19 HEAT EXCHANGER STRUCTURE

2.3.2 Transmission Equipment(Optional)

Transmission equipment is an optional configuration. The base-band power cabinet reserves a space of 19" wide and 4 U high forits installation.

The transmission equipment adopts - 48 V DC supply with 200 Wpower consumption.

The transmission equipment completes transmission signals con-version. ZXSDR BS8900 C100 supports various types of transmis-sion equipments, such as SDH, microwave, PDH optical transmis-sion and HDSL.

Caution:

The transmission equipment demands a relatively small workingtemperature range. Pay attention to the temperature in local en-vironment for inside transmission equipment configuration since itwill decrease the BBU working temperature range.

2.3.3 Baseband Subrack

Figure 20 shows the ZXSDR BS8900 C100 baseband subrack.


Chapter 2 Cabinet

FIGURE 20 BASEBAND SUBRACK

1. CHV2. CHD3. FA4. SA

5. CC6. FS7. PM

Table 13 describes the modules configured in the baseband sub-rack slots.

TABLE 13 BASEBAND SUBRACK MODULES DESCRIPTION

Module Meaning Quantity Description

CHV ChannelProcessingModule (1xservice)

CHD ChannelProcessingModule (DOservice)

1~4 A single module cansupport 6 CS, Theiramounts are determinedby service demands.

FA Fan Array Module 1

SA Site AlarmModule

1 Supports 8 E1/T1interfaces, 8 drycontacts (6 outputsand 2 two-ways), 1expanded RS232/RS485communication interfaceand fan monitor.

CC Control and ClockModule

1~2 Supports 1+1active/standby mode.Both are configured onlyupon specific request.

FS Network SwitchModule

1~2 1 module is configuredas default. Supports loadsharing. Not supportactive/standby mode.

PM Power Module 1~2 1 module is configured asdefault. 2 are configuredupon specific request.



2.3.4 Cable Tray

The cable tray locates in the baseband power cabinet and takesup a 1 U high space.

The cable tray is used for cable wiring, management, supportingand protection. Figure 21 shows its structure.

FIGURE 21 CABLE TRAY STRUCTURE

2.3.5 Lightning Subrack

The lightning subrack prevents the external RS232/RS485, drycontact, E1/T1 and FE/GE interfaces of ZXSDR BS8900 C100 out-door transmission equipment from lightning and avoids damagesto the equipment caused by lightning induction and static electric-ity.

The lightning subrack fulfills the following functions:

Supports lightning protection of 8 dry contacts.

Supports lightning protection of one RS232 channel and oneRS485 channel.

Supports lightning protection of 8 E1 channels.

Supports lightning protection of 2 FE/GE electrical interfaces.

The lightning subrack locates in the baseband power cabinet, anoption for configuration. Figure 22 shows the lightning subrackpanel.

FIGURE 22 LIGHTNING SUBRACK PANEL

1. RS232/RS485_EM2. MON_IN/OUT_GO3. BSC_E1_GO4. ABIS_1/ABIS_05. BBU_A1/BBU_A06. BBU


Chapter 2 Cabinet

Note:

The lightning subrack configuration is unnecessary when externaldry contact and external monitor are not required for GE opticalaccess to Abis interface.

2.3.6 Power Supply Subrack

Composed of AC distribution unit, DC distribution unit, rectifier andmonitoring unit, the power supply subrack adopts a standard 19inch structure with a 6 U height.

Figure 23 shows the structure of power supply subrack.

FIGURE 23 POWER SUPPLY SUBRACK STRUCTURE

1. DC distribution unit2. Monitoring unit

3. Rectifier4. AC distribution unit

Table 14 lists the description of each composition unit of powersupply subrack.

TABLE 14 POWER SUPPLY SUBRACK COMPOSITION UNIT DESCRIPTION

Unit Quantity Description

AC distributionunit

1 Provides 2 sets of standby outputs instandard configuration.

DC distributionunit

1 Provides overload protection for DCoutput branch and battery branch.



Unit Quantity Description

Rectifier

Chapter 2 Cabinet

FIGURE 25 RF CABINET OUTER STRUCTURE

1. Handle2. Heat-dissipation window

3. Base

Note:

Both the sun shield and base are required when the RF cabinet isinstalled alone. When the cabinets are installed in heap, the sunshield is needed for RF cabinet in the upper layer and teh base isneeded for RF cabinet in the lower layer.

Table 15 lists the description of RF cabinet outer components.

TABLE 15 RF CABINET OUTER COMPONENTS DESCRIPTION


Sun shield Prevents direct sun shine.

Heat-dissipationwindow

Helps cabinet heat-dissipation.

Base Used for cabinet fixation. Provides guardagainst theft.

Handle Used to open and close the cabinet door.Equipped with alarm lock against theft.

2.5 RF Cabinet Inner Structure

Figure 26 shows the RF cabinet inner structure.



FIGURE 26 RF CABINET INNER STRUCTURE

1. Fan subrack2. Power distribution subrack3. RF subrack4. Base5. Reserved for lightning filter6. Air intake vent7. Sun shield


Chapter 2 Cabinet

Table 16 describes the inner configuration of RF cabinet.

TABLE 16 RF CABINET INNER CONFIGURATION DESCRIPTION

Unit Configuration

Fan subrack Compulsory

Power distribution subrack Compulsory

RF subrack Compulsory

Lightning Filter Optional

Sun shield Optional

Base Optional

Note:

The RF cabinet should be equipped with both sun shield and basewhen placed alone. If installed in heap with other cabinet, it needssun shield for upper layer and base for lower layer.

2.5.1 Fan Subrack

The fan subrack locates in the RF cabinet above the power distri-bution subrack.

The fan subrack consists of fan control module (FCE), temperaturesensor and 6 fans.

Figure 27 shows the fan subrack structure.

FIGURE 27 FAN SUBRACK STRUCTURE

1. POWER2. MON



2.5.2 Power Distribution Subrack

The power distribution subrack locates in the RF cabinet betweenthe fan subrack and RF subrack.

The power distribution subrack consists of 7 branch power circuitbreakers, 2 bus bar jackets, spacer and the shell with the break-ers controlling over the power distribution to 6 RSUs and the fansubrack.

Figure 28 shows the structure of the power distribution subrack.

FIGURE 28 POWER DISTRIBUTION SUBRACK STRUCTURE

1. RSU 4~62. FAN

3. RSU 1~3

2.5.3 RF Subrack

Figure 29 illustrates the ZXSDR BS8900 C100 RF subrack.


Chapter 2 Cabinet

FIGURE 29 RF SUBRACK

1. RSU

Table 17 describes the module configured in RF subrack slots.

TABLE 17 RF SUBRACK MODULE DESCRIPTION

Module Meaning Quan-tity

Description

RSU Radio SystemUnit

1~6 A single RSU supports 4carriers. RSU number is thesame with sector number ifthe carrier number


FIGURE 30 LIGHTNING FILTER STRUCTURE

Note:

1. Lightning filter needs to be configured when one RF cabinet isinstalled alone or with a storage battery cabinet in heap or withanother RF cabinet in heap.

2. Lightning filter is unnecessary when one RF cabinet is installedwith a baseband power cabinet in heap.

2.6 Storage Battery Cabinet

Outer Structure Figure 31 shows the storage battery cabinet outer structure.

FIGURE 31 STORAGE BATTERY CABINET OUTER STRUCTURE

Cabinet dimension: 850 mm 600mm 600 mm (height width depth)


Chapter 2 Cabinet

Note:

It is common to place the storage battery cabinet under a base-band power cabinet or an RF cabinet, in which case the base needsto be installed but the sun shield is unnecessary.

Table 18 describes the components of the storage battery outerstructure.

TABLE 18 STORAGE BATTERY CABINET OUTER STRUCTURE COMPONENTSDESCRIPTION


Handle Used to open and close cabinet door. Equippedwith alarm lock.

Vent helps cabinet heat-dissipation.

Base Used to fix the cabinet with alarm systemagainst theft.

Inner Structure Figure 32 shows the storage battery cabinet inner structure.

FIGURE 32 STORAGE BATTERY CABINET INNER STRUCTURE

Table 19 describes the inner configuration of the storage batterycabinet.



TABLE 19 STORAGE BATTERY CABINET INNER CONFIGURATION DESCRIPTION

Unit Configura-tion

Description

StorageBattery Set

Compulsory 1~2 sets, configured according toactual conditions. A single cabinetsupports a maximum capacity of 300Ah with each set of 150 Ah. Extrastorage battery cabinet is needed formore demands.


Chapter3 ModulesAfter you have completed this chapter, you will know:

>> BBU Modules

>> RRU Modules

3.1 BBU Modules

3.1.1 Control and Clock Module (CC)

Function CC module provides the following functions:

Active/standby switchover

GPS system clock and RF reference clock

Abis interface function

Provision of the exchange plane for signaling stream and mediastream to implement GE Ethernet exchange function

One USB interface

Subrack management

Baseband modulation and demodulation

Provision of external clock extension interface (IEEE1588) andcommunication extension interface (through the local mainte-nance interface).

Principle The CC module comprises main control unit, GPS unit, power sup-ply unit, storage unit, Abis interface unit, FI unit, MV unit, Ethernetexchange unit, FPGA logic unit and EPLD logic unit.

Figure 33 illustrates the principle of the CC module.



FIGURE 33 CC MODULE PRINCIPLE

Dimension The dimensions of CC module in mm are: 148.8 (H) x 19.0 (W) x181.5 (D).

The dimensions of CC module in inches are: 5 14/16 (H) x 12/16(W) x 7 2/16 (D)

Panel Figure 34 shows the appearance of the CC module panel with han-dle. Figure 35 shows the appearance of the CC module panel with-out handle.

FIGURE 34 CC MODULE PANEL (WITH HANDLE)

FIGURE 35 CC MODULE PANEL (WITHOUT HANDLE)

Note:

Some buttons will be covered if the CC module panel is equippedwith handle, as illustrated in Figure 34 and Figure 35.

Indicator Table 20 describes the indicators on the CC module panel.


Chapter 3 Modules

TABLE 20 CC MODULE PANEL INDICATOR DESCRIPTION

IndicatorName

Color Meaning FlashStatus

Description

E0S Green Indicator ofE1 link 1-4




Flash fre-quency:8Hz

At most 4 flashesper second, and onfor 0.125 secondsand off for 0.125seconds.The first second:One flash meansthat link 0 is normal.Off when the link isunavailable.The third second:Two flashes meanthe first link isnormal. Offwhen the link isunavailable.The fifth second:Three flashes meanthe second linkis normal. Offwhen the link isunavailable.The seventhsecond: Fourflashes mean thethird link is normal.Off when the link isunavailable.Recycle again per 8seconds.

MS Green Ac-tive/standbyindicator

No flash On refers to theactive boardOff refers to thestandby board.

REF Green GPS antennaindicator

Six flashtypes

On when theantenna feederis normal.Off when theantenna feederand the satellite arebeing initialized.Slow flash: On for1.5 seconds andoff for 1.5 secondswhen the antennafeeder is brokenQuick flash: On for0.3 seconds andoff for 0.3 secondswhen the antennafeeder is normal butcan not search thesatellite.Slower flash: Onfor 2.5 seconds andoff for 2.5 secondswhen the antenna isshortcircuited.



IndicatorName


Description

Quicker flash: Onfor 70 ms and offfor 70 ms when nomessage is receivedduring initialization.

ETH0 Green Abis interfacelink statusindicator

No flash,controlledby PHY

On when the Abisinterface physicallink is normal.Off when the Abisinterface physicallink is broken.

ETH1 Green ETH1network portlink statusindicator

No flash,controlledby PHY

On when theETH1 network portphysical link isnormal.Off when theETH1 network portphysical link isbroken.

ALM Red AlarmIndicator

ProcessorControl

On when an alarmoccurs on themodule.Off when no alarmoccurs on themodule.

RUN Green RunningIndicator

Six flashtypes

On when the versionfile begins to run torequest for thelogical address ofthe module.Slow flash: On for1.5 seconds andoff for 1.5 secondswhen the module isbeing powered on.Normal flash: Onfor 0.3 seconds andoff for 0.3 secondswhen the boardis under normaloperation.Slow flash: Onfor 2 seconds andoff for 2 secondswhen the board isin active/standbypre-changeover.Slow flash: Onfor 1 second andoff for 1 secondwhen the board isin active/standbychangeover.Fast flash: Onfor 70 ms and offfor 70 ms whencommunicationbetween CCboard and OMP


Chapter 3 Modules

IndicatorName


Description

is interrupted, orcommunicationbetween active andstandby CCs/FSsis interrupted, orcommunicationbetween CH andCC is interrupted,or communicationbetween FS and CCis interrupted.

Button Table 21 describes the buttons on the panel of CC module.

TABLE 21 CC MODULE PANEL BUTTON DESCRIPTION

Button Description

M/S Active/standby switchover button

RST Reset button

Panel Interface Table 22 describes interfaces on the panel of CC module.

TABLE 22 CC MODULE PANEL INTERFACE DESCRIPTION

Interface Name Description

ETH0 GE/FE port connection betweenBBU and BSC

ETH1 Debugging or local maintenance

EXT Connecting the external receiver(RS485, PP1S and 2M interfaces)

REF Connecting GPS antennaexternally

TX/RX Connecting the optical interfacebetween BBU and BSC

3.1.2 Channel Processing Module (CH)

Function CH module performs the following functions:

The forward modulation and reverse demodulation of base-band

CDMA key technologies, such as diversity technique, RAKEreceiving, softer-handoff and power control

Mixed insertion of CHV and CHD modules to support 1x andEV-DO service.



Principle CHV module consists of processing unit, baseband modulation anddemodulation unit, FPGA unit, EPLD logic unit, power, Ethernet unitand MMC unit. Figure 36 shows the principle of CHV module.

FIGURE 36 CHV MODULE PRINCIPLE

CHD module consists of multiplexing and de-multiplexing unit,clock processing unit, ARM unit, DSP unit, modulation and de-modulation unit and MPC unit. Figure 37 shows the principle ofCHD module.

FIGURE 37 CHD MODULE PRINCIPLE

Measurement The dimensions of CH module in mm are: 148.8 (H) x 19.0 (W) x181.5 (D).


Chapter 3 Modules

The dimensions of CH module in inches are: 5 14/16 (H) x 12/16(W) x 7 2/16 (D).

Panel CH is classified into CHV and CHD. Figure 38 shows the panel ap-pearance of CHV module with and without handle respectively.Figure 39 shows the panel appearance of CHD module with andwithout handle respectively.

FIGURE 38 CHV MODULE PANEL

FIGURE 39 CHD MODULE PANEL

Indicator Table 23 describes the indicators on the panel of CH module.

TABLE 23 CH MODULE PANEL INDICATOR DESCRIPTION

IndicatorName

Color Meaning Flash Status Description

BLS Green Baseband link(forward/re-verse) run-ning statusindicator

The flashfrequencyis 8Hz; itindicatesthe SERDESreceivingstatus andthe forwardbasebandsignal failurewhile FS0/FS1boardconnects toCH board.

Ordinal flashon time, themaximumflash for fourtimes per sec-ond, 0.125sOn and 0.125sOffThe first sec-ond: one flashmeans com-municationwith FS0 isnormal andOff meanscommunica-tion is broken.



IndicatorName


The forth sec-ond: twoflashes meancommunica-tion with FS1is normal andOff meanscommunica-tion is broken.Recycle againper 6 seconds.If the for-ward IO signalcheck fromthe channelchip output iswrong, it isalways off.If the 61.44Mclock or the32CHIP clockis wrong, it isalways off.

SCS Green System clock(50CHIP/10ms) runningstatus indica-tor

Threestatuses: On,quick flashand Off.

On: thesystem clockrunning isnormal.Quick flash:10ms wrong,0.125s On and0.125s Off.Off: 50CHIPwrong.

ST Green Reservation Controlled byCPU, EPLDtransparenttransmissionmode

-

CST Green Communica-tion statusindicator be-tween CPUand MMC

Controlled byCPU, EPLDtransparenttransmissionmode

On: normalcommunica-tion betweenCPU and MMCOff: failedcommunica-tion betweenCPU and MMC.


Chapter 3 Modules

IndicatorName



Four statuses:5Hz flash, 1Hzflash, On andOff.

5 Hz flash:the board isin power-upprocedure.1 Hz flash:the boardis normallyrunning.On: theversion isdownloadedsuccessfullyand is beingstarted.Off: the boardis abnormal.


ProcessorControl

On: the boardhas alarm.Off: the boardhas no alarm.

Button Table 24 describes the button on the CH Panel.

TABLE 24 CH BUTTON DESCRIPTION

Button Name Description

RST Reset

3.1.3 Fabric Switch Module (FS)

Functions The FS module provides the following functions:

In the forward direction, the FS module multiplex and framethe baseband data and then transmits them to the remote RRUthrough the CPRI interface.

In the reverse direction, the FS module deframes and demulti-plexes the received RRU remote data and then transmit themto the baseband processing unit.

The FS module supports six basebandRF remote CPRI inter-faces.

The logic unit implements all the functions except for CPRI in-terface processing.

Principle The FS module comprises active/standby control unit, MCU0 unit,MCU1 unit, EPLD logic, optical interface control unit, FPGA unit,optical receiving and transmitting circuit and clock processing cir-cuit, as shown in Figure 40.



FIGURE 40 FS MODULE PRINCIPLE

Measurement The dimensions of FS module in mm are: 148.8 (H) x 19.0 (W) x181.5 (D).

The dimensions of FS module in inches are: 5 14/16 (H) x 12/16(W) x 7 2 /16 (D).

Panel Figure 41 and Figure 42 show the FS module panel.

FIGURE 41 FS MODULE PANEL WITH HANDLE

FIGURE 42 FS MODULE PANEL WITHOUT HANDLE

Indicator Table 25 describes the indicators on FS panel.

TABLE 25 FS PANEL INDICATOR DESCRIPTION

Indicator Color Meaning FlashStatus

Descrip-tion

RLS Green Reversebasebandlink runningstatusindicator

Controlledby FPGA;the flashfrequencyis 8Hz;it meansthe lockingstatus ofthe reverse

At most fourflashes persecond. Onfor 0.125seconds andoff for 0.125seconds.The firstsecond:


Chapter 3 Modules


Descrip-tion

opticalinterfacesfrom allfibers to FS.

One flashmeans link0 is normal.Off whenthe link isunavailable.The forthsecond:Two flashesmean the1st linkis normal.Off whenthe link isunavailable.The seventhsecond:Threeflashesmean the2nd linkis normal.Off whenthe link isunavailable.The tenthsecond:Four flashesmean the3rd linkis normal.Off whenthe link isunavailable.Thethirteenthsecond:five flashesmean the4th link isnormal andOff meansthe 4th isunavailable.Thesixteenthsecond:Six flashesmean the5th linkis normal.Off whenthe 5th isbroken.Recycleagain per18 seconds.Off whenan erroroccurs onthe 61.44Mclock.




Descrip-tion

FLS Green Forwardbasebandlink runningstatusindicator

Controlledby FPGA;the flashfrequencyis 8Hz;it meansthe datareceivingstatus ofthe forwardSERDESfrom all CHmodules toFS.

At most fourflashes persecond. Onfor 0.125seconds andoff for 0.125seconds.The firstsecond:One flashmeans link0 is normal.Off whenthe link isbroken.The forthsecond:Two flashesmean the1st linkis normal.Off whenthe link isbroken.The seventhsecond:Threeflashesmean the2nd linkis normal.Off whenthe link isbroken.The tenthsecond:Four flashesmeans the3rd linkis normal.Off whenthe link isbroken.Thethirteenthsecond:Five flashesmeans the4th linkis normal.Off whenthe link isbroken.Recycleagain per15 seconds.Off whenan erroroccurs onthe 61.44Mclock.


Chapter 3 Modules


Descrip-tion

SCS Green Systemclockrunningstatusindicator

FPGAcontrolindicator, threestatus: on,quick flashand off.

On whenthe systemclock isnormal.Quicklyblinks (onfor 0.125seconds andoff for 0.125seconds)when a10ms clockfailureoccurs.Off whena 50CHIPclock failureoccurs.

CST Green Communi-cation sta-tus indica-tor betweenCPU andMMC

Controlledby CPU,EPLD trans-parenttransmis-sion

On when thecommuni-cation be-tween CPUand MMC isnormal.Off whenCPU fails tocommuni-cate withMMC.


MMC controlindicator

Blinks in5 Hz flashwhen themodule isbeing pow-ered on.Blinks in1 Hz flashwhen themodule runsnormally.On whenthe mod-ule is start-ing the ver-sion afterdownload-ing it suc-cessfully.Off whenthe moduleis abnormal.


MMC controlindicator

On whenan alarmoccurs onthe module.Off whenno alarmoccurs onthe module.



3.1.4 Site Alarm Module (SA)

Function SA module provides the following functions.

Communication with CC through PMB-0 cable to implement CCunit functions.

Nine fan rev control and monitoring.

Provision of one UART to communicate with the master controlboard CC.

Extensible full-duplex RS232 and RS485 communication chan-nel for connected-externally monitoring equipment.

Six dry contact inputs and two bidirectional dry contacts.

Temperature sensor monitoring interface for FA .

Eight E1/T1 interfaces and interface protection.

BDS_ID and ABIS_MODE configuration.

Principle The SA module comprises management unit, reset unit, monitor-ing unit, E1/T1 interface protection unit and power unit. Figure 43shows the SA module principle.

FIGURE 43 SA MODULE PRINCIPLE

Measurement The dimensions of SA module in mm are: 73.8 (H) x 19.0 (W) x181.5 (D).

The dimensions of SA module in inches are: 2 14/16 (H) x 12/16(W) x 7 12/16 (D).

Panel Figure 44 shows the panel of SA module.


Chapter 3 Modules

FIGURE 44 SA MODULE PANEL

Indicator Table 26 describes the indicators on the panel of SA module.

TABLE 26 SA PANEL INDICATOR DESCRIPTION

Indicator Color Meaning Description


Blinks in 5Hz when themodule is beingpowered on.Blinks in 1Hz when themodule runsnormally.On when themodule isstarting theversion afterdownloading itsuccessfully.Off when themodule isabnormal.

ALM Red Alarm Indicator On when analarm occurs onthe module.Off when noalarm occurs onthe module.

Button Table 27 describes the button on the panel of SA module.

TABLE 27 SA BUTTON DESCRIPTION

Button Description

RST Reset button

Panel Interface Table 28 describes the panel interfaces on SA module.

TABLE 28 SA PANEL INTERFACE DESCRIPTION

Interface Name Description

Mon/Abis Abis connection ,RS232 / RS485monitoring and dry contactmonitoring



3.1.5 Fan Array Module (FA)

Function FA provides the following functions:

Fan control and air inlet temperature check

Fan control interface

Provision of a temperature sensor for FA module to check thetemperature of air inlet

Fan subrack LED status display.

Principle The FA module comprises temperature sensor unit, fan drive unit,LED drive, power supply, fan, backplane interface and FL unit.Figure 45 shows the principle of the FA module.

FIGURE 45 FA MODULE PRINCIPLE

Panel Figure 46 shows the panel of the FA module.


Chapter 3 Modules

FIGURE 46 FA MODULE PANEL

Indicator Table 29 describes the indicators on the panel of the FA module.

TABLE 29 FA PANEL INDICATOR DESCRIPTION

Indicator

Color

Meaning

FlashStatus Description

RUN Green

Runningindicator

Flashfrequency:on for 0.3secondsand off for0.3 seconds

On when the FA is powered onand not controlled by SA.Off when the FA is powered off.Blinks (on for 0.3 seconds andoff for 0.3 seconds) when theFA is controlled by SA.

ALM RedAlarmindicator

Flashfrequency:on for 0.3secondsand off for0.3 seconds

On when the FA is powered onand not controlled by SA (i.e.,the RUN indicator is on) orwhen a fan failure occurs (i.e.,the RUN indicator blinks).Off when the FA is normal (i.e.,the RUN indicator blinks) orwhen the FA is powered off(i.e., the RUN indicator is off).

3.1.6 Power Module (PM)

Function PM module performs the following functions:

16 internal interfaces for +12 V load power

16 internal interfaces for +3.3 V management power

EMMC management



Input over-voltage and under-voltage measurement and pro-tection

Output over-current protection and load power management.

Principle The PM comprises power input unit, soft-startup circuit, statusmonitoring unit, logic unit, CPU, storage, status drive control cir-cuit, I2C interface isolation unit, watchdog circuit and power con-version unit. Figure 47 shows the principle of the PM module.

FIGURE 47 PM MODULE PRINCIPLE

Measurement The dimensions of PM module in mm are: 73.8 (H) x 29.0 ( W) x181.5 (D)

The dimensions of PM module in inches are: 2 14/16 (H) x 1 2/16( W) x 7 12/16 (D)

Panel Figure 48 shows the panel of PM module.


Chapter 3 Modules

FIGURE 48 PM MODULE PANEL

Indicator Table 30 describes the panel indicators of PM module.

TABLE 30 PM PANEL INDICATOR DESCRIPTION


RUN Green Running Indicator Blinks in 5 Hzwhen the moduleis being poweredon.Blinks in 1 Hzwhen the moduleruns normally.On when theversion is beingstarted after itis downloadedsuccessfully.Off when themodule isabnormal.

ALM Red Alarm Indicator On when an alarmoccurs on themodule.Off when no alarmoccurs on themodule.

Panel Interface Table 31 describes the panel interfaces of PM module.

TABLE 31 PM PANEL INTERFACE DESCRIPTION


MON RS232 debugging interface

-48V/-48V RTN -48V DC input interface



3.2 RRU Modules

3.2.1 Radio System Unit (RSU)

Function RSU provides the following functions:

Communication with the baseband subrack

Conversion between air interface RF signals and digital signals

RF signal amplification, transmission, and reception

Clock synchronization.

Principle The RSU module comprises transceiver board (RTR), power am-plifier (PA), duplexer (DFL), lightning interface board (PIBC) andpower unit (RPDC). Figure 49 illustrates the RSU's schematic dia-gram.

FIGURE 49 RSU SCHEMATIC DIAGRAM

Dimension The dimensions of RSU in mm are : 400.5 (H) 72.7 (W) 455.0(D).

Panel Figure 50 illustrates the RSU panel.


Chapter 3 Modules

FIGURE 50 RSU PANEL

Indicators Table 32 describes RSU panel indicators.



TABLE 32 RSU PANEL INDICATOR DESCRIPTION


RUN Green RSU runningindicator

On when RSU isbeing reset orstarted.Blinks in 1Hzwhen RSU runsnormally.Blinks in 5Hz when theversion is beingdownloaded.Off when Selftest fails.

ALM Red RSU alarmindicator

Off whenRSU runsnormally or isbeing reset orstarted, or RSUversion is beingdownloaded.Blinks in 5Hz when acritical alarmis generated.Blinks in 1Hz when aminor alarmis generated.

LNK Green Opticalinterface linkindicator

On when thefiber connectionis normal.Off whenthe fiber isdisconnected.Blinks in 5Hz when thelink is used asclock referencesource and thephase lockedloop is in fastpull-in status.Blinks in 0.25Hz when thelink is used asclock referencesource and thephase lockedloop is in tracingstatus.

RF Orange RF statusindicator

Off during no RFoutputOn during RFoutput

Button There is only one button (RST) on the RSU panel. Table 33 de-scribes the button.


Chapter 3 Modules

TABLE 33 RSU PANEL BUTTON DESCRIPTION

Button Description

RST Reset button

Panel Interfaces Table 34 describes RSU panel interfaces.

TABLE 34 RSU PANEL INTERFACE DESCRIPTION

Interface Entity at endA

Entity at endB

Description

ANT1(TX/RX) RSU Transceiverantenna

Connected totransceiver an-tenna of trans-mit/receivemain set chan-nel

ANT2(RX) RSU Receiveantenna

Connectedto receivediversitychannelantenna

Rx out RSU Frequencyexpansion RSU

Frequencyexpansionoutputinterface,outputting mainset receivedsignals

Rx in Frequencyexpansion RSU

RSU Frequencyexpansioninput interface,inputtingdiversityreceived signals

TX1 RX1 RSU BBU or theupper levelcascaded RSU

Connectedto the CPRIinterface of BBUor upper levelcascaded RSU

TX2 RX2 RSU Lower levelcascaded RSU

Connectedto the CPRIinterface ofthe lower levelcascaded RSU

DBG RSU PC and testdevice (testboard)

Debug interfaceand testinterface

TEST RSU Testing device Tx Test signalinterface



Interface Entity at endA

Entity at endB

Description

MON RSU Peripheral Provides inputinterface forfour channelsof dry contactsignals andRS 485environmentmonitoringinterface

AISG RSU Antenna feeder Connected toantenna feederAISG interface

POWER RSU front panel RF powersupply inthe powerdistributionsubrack

-48 V DC powerinput interface

3.2.2 Power Distribution Module (PDM)

The Power Distribution Module (PDM) provides one -48V DC inputinterface and eight -48V DC output interfaces to supply power forRSU and FCE.

Figure 51 shows the front panel of the PDM.

FIGURE 51 PDM FRONT PANEL

Table 35 describes the PDM front panel.

TABLE 35 PDM FRONT PANEL DESCRIPTION

Silk Print Name Description

PWR IN Power indicator That it is on does not meanthat the equipment is poweredon but just means that there ispower supply available for thisequipment.

PWR Whole equipmentpower supply andbuilt-in transmissionsubrack powersupply

ON: Powered onOFF: Powered off

LSP Lightning filter Lightning protection


Chapter 3 Modules


FAN Fan subrack powersupply


RU1 Power supply of RFunit 1












Figure 52 shows the PDM rear panel.

FIGURE 52 PDM REAR PANEL

3.2.3 Fan Control Module (FCE)

The Fan Control Module (FCE) provides the following functions:

Heat dissipation of the integrated equipment

Monitoring of fans in the RF cabinet

Power supply for fans, rotation control and state report.

Figure 53 shows the FCE front panel.

FIGURE 53 FCE FRONT PANEL

Table 36 describes the FCE front panel.



TABLE 36 FCE FRONT PANEL DESCRIPTION


POWER Powerinterface

It is connected to the fan power supply ofthe power distribution subrack.

PWR Powerindicator

That it turns green indicates the fan unitis powered on.

RST Reset button Resets the whole fan system.

ALM Alarmindicator

That it turns red indicates there is analarm occurring.

RUN Run indicator That it flashes indicates the fan systemruns normally.

MON Monitoringinterface

Monitors fans.


Chapter4 Networking andConfiguration

After you have completed this chapter, you will know:

>> Abis Interface Networking

>> Baseband-RF Interface Networking

>> Cabinet Configuration

>> Board Configuration

4.1 Abis Interface Networking

Abis interface is to connect ZXSDR BS8900 C100 and BSC. Physi-cally, E1/T1 and GE/FE connections are available.Figure 54 showsthe Abis interface networking.

FIGURE 54 ABIS INTERFACE NETWORKING

BSC connects to ZXSDR BS8900 C100 through E1/T1 in termsof star networking and chain networking either alternatively orassociatively.

Star networking means that each ZXSDR BS8900 C100point-to-point connects to BSC directly (via E1/T1 orGE/FE) or indirectly (through an external transmissionequipment), a simple but reliable method.

Chain networking means that several ZXSDR BS8900 C100connect in chain first and then connects to BSC as a whole,a method applicable in belt areas.

Several methods are available for BSC to connect to ZXSDRBS8900 C100 via GE/FE Ethernet interface.



BSC connects to ZXSDR BS8900 C100 directly through net-work cable.

BSC connects to ZXSDR BS8900 C100 through a Hub or aSwitch.

BSC connects to several ZXSDR BS8900 C100 productsthrough a Router.

4.2 Baseband-RF InterfaceNetworking

ZXSDR BS8900 C100 consists of baseband part (BBU) and RF part(RSU). CPRI (Common Public Radio Interface) standard interfaceis adopted between the two parts (or BBU and RRU), with opticalfiber as its physical connection. A single FS module in BBU pro-vides 6 optical interfaces at most.

Figure 55 shows the baseband-RF interface networking of ZXSDRBS8900 C100.

FIGURE 55 BASEBAND-RF INTERFACE NETWORKING

It is drawn from Figure 55 that BBU and RSU (or RRU) support starnetworking, chain networking and any of their combinations.

Star networking means each RSU (or RRU) point-to-point con-nects to BBU. It boasts higher reliability but occupies moretransmission resources, a method available for RSU (or RRU)and BBU to be installed in the same place.

Chain networking means RSUs (or RRUs) in chain connects intoBBU, applicable in belt scenarios. It occupies fewer transmis-sion resources but has lower reliability than star networkingdoes. It is available for RSU (or RRU) and BBU to be installedin different places.


Chapter 4 Networking and Configuration

4.3 Cabinet Configuration

ZXSDR BS8900 C100 can be configured with or without storagebattery cabinet.

ConfigurationWith Storage

Battery Cabinet

In this configuration mode, ZXSDR BS8900 C100 consists of 3 cab-inets: baseband power cabinet, storage battery cabinet and RFcabinet, with the former two piling up and the latter placed sepa-rately, as is shown in Figure 56.

FIGURE 56 CONFIGURATION WITH STORAGE BATTERY CABINET

1. Baseband power cabinet2. RF cabinet

3. Storage battery cabinet

Table 37 describes the cabinet configuration of ZXSDR BS8900C100.



TABLE 37 CABINET CONFIGURATION DESCRIPTION

Name Configuration Description

Heat exchanger Compulsory It fulfills the heat exchangefunction so as to keep a stableworking temperature andensure the normal operationof the equipment.

Transmissionsubrack

Optional It completes the conversion ofsignals transmitted.

BBU Compulsory It conducts baseband signalprocessing.

Cable tray Optional It is used for cable wiring.

Lightning subrack Compulsory It is used for outdoorlightning-proof.

Embedded powersupply

Compulsory It provides power supply forZXSDR BS8900 C100.

Storage battery Optional It is of backup battery withmax. 300Ah capacity.

Fan unit Compulsory It monitors and reports therunning status of each fan.

Power distributionsubrack

Compulsory It distributes DC power toeach unit in RF cabinet.

RSU Compulsory It processes RF signals.

Lightning protect &filter Unit

Optional It is for lightning proof andwave filtering.

Note:

ZXSDR BS8900 C100 with storage battery cabinet can supports 2RF cabinets in heap.

Configurationwithout StorageBattery Cabinet

In this configuration mode, ZXSDR BS8900 C100 consists of twocabinets: baseband power cabinet and RF cabinet, in heap, as isshown in Figure 57.


Chapter 4 Networking and Configuration

FIGURE 57 CONFIGURATION WITHOUT STORAGE BATTERY CABINET

1. Baseband power cabinet 2. RF cabinet

Cabinet configuration is described in Table 37.

4.4 Board Configuration

ZXSDR BS8900 C100 consists mainly of baseband subrack andRF subrack. Baseband subrack is equipped with CC, CH, FS, SA,PM and FA boards while RF subrack with RSUs. Table 38 lists tehdescription of ZXSDR BS8900 C100 board configuration.



TABLE 38 ZXSDR BS8900 C100 BOARD CONFIGURATION DESCRIPTION

Module Quantity Description

CC 1, 2 1 module is configured at least. 2modules are both configured foractive/standby function.

FS 1, 2 1 module is configured at least and 2modules are required in case of morethan 6 external RSUs (or RRUs).

CH 1~5 Contains CHD for EV-DO service andCHV for CDMA 2000 1X service. Theirspecific respective number depends onthe practical data and voice servicessince mixed insertion is acceptable.

SA 1 Compulsory

PM 2 Compulsory

FA 1 Compulsory

RSU 1~6 It is configured according to carriernumber, sector number and basebandcapacity. an RSU is configured for eachsector if the carrier number is = 4and

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