Huawei BTS3012 Hardware Structure Guide

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Copyright©2006HuaweiTechnologiesCo.,Ltd.Allrightsreserved.
HUAWEIBTS3012
HardwareStructure

Objectives
Uponcompletionofthiscourse,youwillbeableto:
KnowthefunctionsandfeaturesofBTS
MastertheBTShardwarestructure
MasterthecableconnectionofBTS

References
BTS3012TechnicalManual
BTS3012InstallationManual
BTS3012UserManual

Contents
1.Overview
2.SystemComponents
3.SignalProcessing
4.AntennaandFeederSystem
5.TypicalConfiguration

Location
OMC:OperationandMaintenanceCenterVM:VoiceMailbox
SMC:ShortMessage
Center
VLR:VisitorLocation
Register
MSC:MobileSwitching
Center
EIR:EquipmentIdentity
Register
AUC:AuthenticationCenterHLR:HomeLocation
Register
BSC:BaseStation
Controller
BTS:BaseTransceiver
Station
MS:MobileStation
PSTN
ISDN
PSPDN
UmInterface
BTS3012
BTS3012
BTS3012
BTS3012
OMC
HLR/AUC/
EIR
BSC
MSC/VLR
SMC/VM
AInterface
MAP
M
AP
TUP,ISUPMS
MS
MS

FeaturesandFunctions
SupportGSM800M、850M、900M、1800M、1900M
Supportnetworkingtopologyincludesstar,tree,chainand
ring
SupportA5/1andA5/2encryption/decryption
SupportGPRSandEDGE
Supportdynamicandstaticpowercontrol
Supporttheomni-directionalcoverageanddirectional
coverage

FeaturesandFunctions
DoubleTransceiverUnit(DTRU).Asinglecabinetcan
supportupto12carriers.Itcansmoothlyevolveinto
WCDMA
Transmitdiversity,4-receivediversity
SupportPowerBoostTechnology(PBT)
BTS3012cansharecabinetwithWCDMAbasestation.The
moduleofWCDMAbasestationcanbeinsertedinthe
BTS3012cabinet
SupportmorevarioustransmissionmodeincludesE1,STM-
1,microwave,andsatellitetransmission

Hardwarestructure
TMATMA
DTRUDAFU
Antennaandfeeder
subsystem
ForepartofRF
Subsystem
TMATMA
DTRUDAFU
TMATMA
DTRUDAFU
Doubletransceiver
subsystem
DATU
UmInterface
DATU
fiber
E1
AbisInterface
Commonsubsystem
NFCB
Metro100
DTMU
DEMU
E1
BITS
Monitor
TBUS/DBUS/CBUS
MS
FH_BUS
Extension
cabinet
DBUS/
TBUS
CBUS
CBUS3
CBUS3
CBUS3
CBUS3
CBUS2
CBUS2
CBUS2
CBUS3
CBUS3
Protectionforsignal
Electrictiltantenna&TMAfeed
Electrictiltantenna&TMAfeed
Electrictiltantenna&TMAfeedCBUS3
FH_BUS
FH_BUS
RFsignal
RFsignal
RFsignal

BTS3012CabinetandBoards
NodeBFanControllingandmonitoringBoardFANBox
CabinetTopBackplaneforDTRUBTSDCTB
EnvironmentMonitoringUnitforDTRUBTSDEMU
CombinedcabinetSignalconnectionUnitforDTRUBTSDCSU
SignalAccessCardforDTRUBTSDSAC
E1SignalLightning-ProtectionCardforDTRUBTSDELC
MonitorSignalLightning-ProtectionCardforDTRUBTSDMLC
AntennaandTMAControlUnitforDTRUBTSDATU
CombiningUnitforDTRUBTSDCOM
DualDuplexerUnitforDTRUBTSDDPU
AntennaFront-endUnitforDTRUBTSDAFU
CableConnectionUnitforDTRUBTSDCCU
Transmission&Timing&ManagementUnitforDTRUBTSDTMU
DoubleTransceiverUnitDTRU
DescriptionAbbreviations

BTS3012CabinetandBoards
DDDD
Wiring&AirInlet
Wiring
D
D
P
U
D
C
O
M
D
C
O
M
D
D
P
U
D
C
O
M
D
T
R
U
D
T
R
U
D
T
R
U
D
T
R
U
D
T
R
U
D
T
R
U
Wiring
FAN
AirInlet
M
L
C
Powerand
EMC
TransmissionUnit
D
D
P
U
E
L
C
E
L
C
S
A
C
TransmissionUnit
D
T
M
U
D
T
M
U
D
E
M
U
D
C
C
U
D
C
S
U
D
A
T
U
Double
transceiver
subsystem
Common
Subsystem
AntennaFront-End
oftheRFSubsystem
(DAFU)
CabinetTopAccess
Subsystem(DCTB)

CommonSubsystem
DTMUTransmissiontiming&managementunitforDTRU
BTS
DEMUEnvironmentMonitoringUnitforDTRUBTS
DCSUCombinedcabinetSignalconnectionUnitforDTRU
BTS
DCCUCableConnectionUnitforDTRUBTS
DATUAntennaandTMAcontrolunitforDTRUBTS

FunctionsofDTMU
ProvidingtheexternalGPSinput,theBITSsynchronized
clockinput
Providing4-routeor8-routeE1input，backupbetweenthe
activeandstandbyboards
ProvidinglocalMMImaintenanceofthe10Mnetworkport
Controlling,maintaining,andoperatingtheBTS
Providingfaultmanagement,configurationmanagement,
performancemanagement,andsecuritymanagement
Supporting8-routedigitalalarminput.Tworoutesare
lightningarresterfailurealarmdetection

StructureofDTMU
MCK
OML
DBUS
CBUS2
Clock
BIU
DTRU
DTMU
BSC
MCU
MMI
LMT
Abis
External
synchronizedclock
Subracknumber
andclock

IndicatorsonDTMU
RUN
ACT
PLL
LIU1
LIU2
LIU3
LIU4
SWT
ALM
RST
MMI
T2M
FCLK
T13M
DTMU
E1port1remoteendalarmoccurs
whenSWTisout
E1port5remoteendalarmoccurs
whenSWTison
Fastflash(4Hz)
E1port1nearendalarmoccurswhen
SWTisout
E1port5nearendalarmoccurswhen
SWTison
On
E1port1isnormalwhenSWTisout
E1port5isnormalwhenSWTison
OffIndicatesthe
transmission
statusofE1
port1and
port5
GreenLIU1
LockFastflash(1Hz)
Pull-inFastflash(4Hz)
Free-runOn
AbnormalOffIndicatesthe
clockstatus
GreenPLL
ActiveOn
StandbyOffIndicates
whetherthe
boardis
activeor
standby
GreenACT
PowerfailureoftheboardOff
BSCdataloadingFastflashat
uncertainintervals
NormalSlowflash(0.5Hz)
OMLisblockedSlowflash(0.25Hz)Indicates
operation
GreenRUN
MeaningStatusDescriptionColorIndicator

HardwarealarmOn
NohardwarealarmOffAlarmindicatorsRedALM
LIU1toLIU4indicatethetransmissionstatusofE1port5to8.On
LIU1toLIU4indicatethetransmissionstatusofE1port1to4.OffIndicateshandoverstatus
ofE1
GreenSWT
E1port4remoteendalarmoccurswhenSWTisout
E1port8remoteendalarmoccurswhenSWTison
Fastflash(4Hz)
E1port4nearendalarmoccurswhenSWTisout
E1port8nearendalarmoccurswhenSWTison
On
OffIndicatesthe
transmissionstatusofE1
port4andport8
GreenLIU4
Fastflash(4Hz)
On
OffIndicatesthe
port3andport7
GreenLIU3
Fastflash(4Hz)
On
OffIndicatesthe
port2andport6
GreenLIU2
IndicatorsonDTMU
RUN
ACT
PLL
LIU1
LIU2
LIU3
LIU4
SWT
ALM
RST
MMI
T2M
FCLK
T13M
DTMU

InterfaceontheDTMUpanel
NearendmaintenancenetworkportRJ45MMI
13MprimaryreferenceclockSMB(female)T13M
216.7HzframeclockSMB(female)FCLK
OutputsreferencetestingclockSMB(female)T2M
DescriptionTypeInterface

FunctionsofDEMU
TheDEMUisplacedinslots2to4andslot7ofthe
commonsubrackwiththeDATU.TheDEMUisanoptional
module.ThereismaximumoneDEMUunderfull
configuration.
Monitoringvariationsinthesmoke,water,temperature,
humidity,infrared,andaccesscontrol,Handlingalarms
Outputof6-routeBooleanvalueandinputof32-routemain
nodealarms
DMLCDEMU
CBUS3Monitorsignal

FunctionsofDCSU
TheCombinedCabinetSignal
ConnectionUnitforDTRUBTS
(DCSU)isplacedinslot5ofthe
commonsubrack,whichislocated
inthelowerpartofthecabinet.
ThereisonlyoneDCSUanditis
mandatory
TheDCSUtransferssignalsforthe
combinedcabinetandcabinet
groupbetweenthecommon
subrackandthecabinettop
subrack
DCMB
DTMU
DCSU
DTRB
DCTB
DCCU
DEMU
DATU

TheinterfacesontheDCSUpanel
Connectingtothecabinettopsubrack
throughcables
DB26(female)TOP2
ConnectingtotheDTRBthroughcablesMD64(female)To_DTRB
ForcableinputtothecombinedcabinetMD64(female)CC_IN
ForcableoutputfromthecombinedcabinetMD64(female)CC_OUT
DescriptionType
Silk-
Screen
CC_IN
CC_OUT
TO_DTRB
TOP2
DCSU

GM51DCSUVERB
SW6
SW9
SW14
SW13
SW12
SW7
SW10
SW8
SW5
SW4
SW3
SW11
SW2
SW1
SwitchofDCSU

FunctionsofDCCU
TheDCCUisplacedinslot6of
thecommonsubrack.Thereis
onlyoneDCCUanditis
mandatory
Convertingtheinputandoutput
signalsofthecommonsubrack.
Inputtingthepowerofthe
commonsubrack
ProvidingEMIfiltering
DCMB
DTMU
DCCU
NFCB
DCTB
DCSU
DEMU
DATU

TheinterfacesontheDCCUpanel
POWER
DCCU
To_FAN
TO_TOP1
TRAN
Forpowerinputofthecommon
unit
3V3POWER
Connectstothecabinettop
subrackthroughcables
MD64
(female)
TO_TO
P1
Connectstothefanpanelthrough
cables
DB26
(female)
To_FAN
ForE1signalinput
MD64
(female)
TRAN
DescriptionType
Silk-
Screen

FunctionsofDATU
TheDATUisplacedinslots2to4andslot7of
thecommonsubrackwiththeDEMU.Itis
optionalandtherearemaximumtwoDATUs
Transmittingtheremoteelectricaltiltunit(RET)
controlsignals
FeedingtheTMA
CommunicatingwiththeDTMUthrough
CBUS3forcontrolandalarmreport
DATU
RUN
ACT
ALM
ANT0
ANT1
ANT2
ANT3
ANT4
ANT5

CabinetTopAccessSubsystem
DMLC(MonitorSignalLightning-ProtectionCardforDTRU
BTS)
DELC(E1SignalLightning-ProtectionCardforDTRUBTS)
DSAC(SignalAccessCardforDTRUBTS)
D
M
L
C
D
E
L
C
D
E
L
C
D
S
A
C
DCF
CKB2
CKB1

FunctionofDMLC
TheDMLCisplacedinslots0to2ofthecabinet
topsubrackwiththeDELC.Thereisonlyone
DMLCanditisoptionalDMLC
Thirty-two-routeBooleanvalueinput
Six-routeBooleanvalueoutput
Four-routeanaloginput
Smoke/water/access
control/infrared/humidity/temperaturesensor
signalinput
SWIN
SWOUT
DMLC
AIN

FunctionofDELC
TheDELCisplacedinslots0to2ofthe
cabinettopsubrackwiththeDMLC
TheDELCismandatoryandthereisone
DELCunderminimumconfiguration
WithouttheDMLC,therearemaximumthree
DELCs,supportingupto12routesof
protectedE1signals
DELC
TR

FunctionofDSAC
TheDSACisplacedinslot3ofthecabinettop
subrack.ThereisonlyoneDSACanditis
mandatory
Six-routeBooleanvalueinput.
Two-routeCBUS3output
Two-routeinputoflightningprotectionarrester
failurealarm
AccessprotectionofBITSclockinput
DSAC
COM1 EAC SYNCCOM2 S1+S1-S2+S2-

Doubletransceiversubsystem
DTRU（DoubleTransceiverUnit）
DTRB
DTRB
DTRU
DTRU
DTRU
DTRU
DTRU
DTRU

FunctionsofDTRU
RFsubsystemtransmitpart.Convertsthebasbandsignalsonthetwo
TRXstotheRFsignals.Supportsup-frequencyconversionofthesignals
andRFfrequencyhopping.Filters,amplifies,andoutputsthecombined
signals
RFsubsystemreceivepart.DevidesandmodulatestheRFsignalsonthe
twoTRXs.SupportstransmitreceiveandRFfrequencyhopping
Basebandprocessingpart.Processessignals.Supportscodingand
decoding,interleavingandde-interleaving,modulationand
demodulation.Supportsvoicefaxservices.Supportsdataservicesin
PhaseII,GPRSservices,andEDGEservices.Supportstransmitdiversity
and4-wayreceivediversity.Amplifiestheoutputpower

FunctionalstructureofDTRU
DTRUBasebandandRFUnit(DBRU)
DTRUPowerAmplifierUnit(DPAU)
DTRUPowerSupplyUnit(DTPS)
DTMU
DTPS
DTRU
-48VDC
DPAU
DBRU
DAFU

IndicatorsonDTRU
RLalarmSlowflash(0.5Hz)
NormalOff
StandingwavealarmOnRFinterfaceindicatorsRedRF_IND
Theboardisnormal.Off
Criticalalarmoccurstotheboard.On(includinghigh-
frequencyflash)
IndicatesalarmRedALM
Onlypartsofthelogicchannelsareworkingnormally
(includingafterTRXmutualaid).
Slowflash(0.5Hz)
CommunicationbetweenDTRUandDTMUisnotsetupOff
Theboardisrunning(theDTMUsendsconfiguration
parameterstotheDTRUcorrectlyandthecellisstarting).
Allthechannelsonthetwocarrierscanworknormally.
OnIndicatestheTRXis
working
GreenACT
TheDTMUissendingconfiguraitonparameterstothe
DTRU.
Fastflash(2.5Hz)
Theboardisrunning.Slowflash(0.5Hz)
Theboardisstarting.Slowflash(0.25Hz)
Thereisnopowersupplyandtheboardisfaulty.Off
Thereispowersupplyortheboardisfaulty.OnIndicatestherunning
andpower-onofthe
DTRU
GreenRUN
DTRU
TX1
IN1
TCOM
IN2
TX2
RST
RUN
ACT
ALM
RF_IND
PWR
RXM1
RXD1
RXM2
RXD2

Powersupply3V3PWR
Diversityreceiveportofcarrier2orDiversity4receiveportof
carrier1
SMA(female)RXD2
Mainreceiveportofcarrier2orDiversity3receiveportofcarrier1SMA(female)RXM2
Diversity1or2receiveportofcarrier1SMA(female)RXD1
Mainordiversity1receiveportofcarrier1SMA(female)RXM1
TX2outputsignals:
OutputtotheforepartoftheRFwhennotincombiner
OutputtoIN2incombiner
N(male)TX2
ConnectstoTX2incombinerSMA(female)IN2
CombinesandoutputsIN1andIN2orimplementsPBTcombined
output
N(male)TCOM
ConnectstoTX1incombinerSMA(female)IN1
TX1outputsignals:
OutputtotheforepartoftheRFwhennotincombiner
OutputtoIN1incombiner
N(male)TX1
DescriptionTypeInterfaceDTRU
TX1
IN1
TCOM
IN2
TX2
RST
RUN
ACT
ALM
RF_IND
PWR
RXM1
RXD1
RXM2
RXD2
ConnectorsonDTRU

DTRUtransmitmode
Nocombining
Diversitytransmitter
Powerboostertechnology
Widebandcombining

Nocombining
TCOM
TRX0TRX0
TX
TRX1TRX1
TX
TX1
IN1
IN2
TX2
RXM1
RXD1
RXM2
RXD2
combinercombiner

Diversitytransmitter
TRX1TRX1
TRX0TRX0
TX
TX
TX1
IN1
TCOM
IN2
TX2
Manmademultiway
combinercombiner

Powerboostertechnology
TRX1TRX1
TRX0TRX0
TX
TX
TX1
IN1
TCOM
IN2
TX2
Samephase
combinercombiner

Widebandcombining
TRX0TRX0
TX
TRX1TRX1
TX
TX1
IN1
TCOM
IN2
TX2
combinercombiner

DTRUreceivemode
Independentreceiver
Dividingreceiver
Fourdiversityreceiver

Independentreceiver
TRX1TRX1
TRX0TRX0
TX
TX
TX1
IN1
TCOM
IN2
TX2
RXM1
RXD1
RXM2
RXD2
dividerdivider
combinercombiner
dividerdivider

Dividingreceiver
TRX0TRX0
TX
TRX1TRX1
TX
TX1
IN1
TCOM
IN2
TX2
RXM1
RXD1
RXM2
RXD2
combinercombiner
dividerdivider
dividerdivider

Fourdiversityreceiver
TRX0TRX0
TX
TRX1TRX1
TX
dividerdivider
dividerdivider
TX1
IN1
TCOM
IN2
TX2
RXM1
RXD1
RXM2
RXD2
combinercombiner

IntrastructureofDTRU
TRX0TRX0
TX
TRX1TRX1
TX
TX1
IN1
TCOM
IN2
TX2
RXM1
RXD1
RXM2
RXD2
combinercombiner
dividerdivider
dividerdivider

FunctionsofDTRB
TheDTRBisplacedinthe
DTRUsubrack.Ithassixslots,
eachholdingoneDTRU
TheDTRBprovidesconnections
betweentheDCSUandthe
DTRU.Alltheonsitesignalsare
providedtotheDCSUthrough
theDTRB
DTRB
DTRU
DTRU
DTRU
DTRU
DTRU
DTRU

Front-EndoftheRFSubsystem
DDPU(DualDuplexerUnitforDTRUBTS)
DCOM(CombiningUnitforDTRUBTS)
NBBI
D
C
O
M
D
D
P
U
D
C
O
M
D
D
P
U
D
C
O
M
D
D
P
U
123450

FunctionsofDDPU
TheDDPUisintermixedwiththeDCOMintheDAFUsubrack
oftheforepartofRFsubsystem.Itisindispensable.Generally,
thenumberofDDPUisoneatleastandthreeatmost.Without
theDCOM,therecanbeatmostsixDDPUs
SendingmultiRFsignalsfromthetransceiverintheDTRUto
theantennathroughtheduplexer
Sendingsignalsfromtheantennaafteramplifyingand
quarteringthemtothetransceiverintheDTRU
DetectingstandingwavealarmsintheAntennaFeedersystem
Receivingthegaincontrolofthelownoiseamplifier

FunctionalstructureoftheDDPU
ANTB
TXA
TXB
RXA4
duplexerduplexerdividerdividerduplexerduplexerdividerdivider
ANTA
RXA1
RXA2
RXA3
RXB1
RXB2
RXB3
RXB4

IndicatorsonDDPU
NostandingwavealarmoccurtoChannel
B
Off
Standingwavecriticalalarmoccursto
ChannelB
On
StandingwavealarmoccurstoChannelBSlowflash(0.5Hz)Indicatesa
standingwave
alarmofChannel
B
RedVSWRB
NostandingwavealarmoccurstoChannel
A
Off
Standingwavecriticalalarmoccursto
ChannelA
On
StandingwavealarmoccurstoChannelASlowflash(0.5Hz)Indicatesa
standingwave
alarmofChannel
A
RedVSWRA
Theboardisstartingorloadingthenewest
applicationprograms
Slowflash(0.5Hz)
NofaultOff
Thereisalarm(includingstandingwave
alarm)andtheboardisfaulty.
On(including
high-frequency
flash)
IndicatesanalarmRedALM
TheDTMUissendingconfiguration
parameterstotheDDPUortheDDPUis
loadingsoftwareprograms.
Fastflash(2.5Hz)
Theboardisrunningnormally.Slowflash(0.5Hz)
Thereisnopowersupplyortheboardis
faulty.
Off
Thereispowersupplyandtheboardis
faulty.
OnIndicatesthe
DDPUisrunning
andpowerdon
Gree
n
RUN
MeaningStatusDescriptionColo
r
Indicato
r
RUN
ALM
VSWRA
RXA1
RXA2
RXA3
RXA4
RXB1
RXB2
RXB3
RXB4
DDPU
TXA
TXB
COM
POWER
VSWRB
ANTA
ANTB

InterfaceonDDPU
RFjumperportDIN(female)ANTB
RFjumperportDIN(female)ANTA
Diversity4outputportSMA(female)RXB4
Main4outputportSMA(female)RXA4
InputoftheTXsignalssentfromtheDTRU
InputoftheDCOMcombiningsignals
N(male)TXB
InputoftheTXsignalssentfromtheDTRU
InputoftheDCOMcombiningsignals
N(male)TXA
Powersupplyinput3V3POWER
SendstotheDDPUcontrolsignals,communication
signals,clocksignalsandsubracknumber
DB26
(female)
COM
RUN
ALM
VSWRA
RXA1
RXA2
RXA3
RXA4
RXB1
RXB2
RXB3
RXB4
DDPU
TXA
TXB
COM
POWER
VSWRB
ANTA
ANTB

FunctionsofDCOM
TheDCOMisplacedintheDAFUsubrack
withtheDDPU
TheDCOMisoptionalandtherearea
maximumthreeDCOMs.TheDTRU
combinestwocarriersintoonechannel.
TheDCOMisrequiredwhentheDTRUs
areinsufficent
TheDCOMcombinesthe2-routeDTRU
transmissionsignalsandoutputsthemto
theDDPU
DCOM
TX-COM
TX2
TX1
ONSHELL

InterfacesonDCOM
TXsignalinputfromtheDTRUtoDCOMN(male)TX2
TXsignalinputfromtheDTRUtoDCOMN(male)TX1
OutputofcombiningsignalsfromtheDCOM
toDDPU
N(male)TX—
COM
Forindentificationoftheboardtypeof
DCOMandon-sitestatus
DB26
(female)
ONSHE
LL

FunctionsofFANBOX
TheFANBOXformsaloopwiththeairinletboxtoprovide
forcedventilationanddissipationforthecommonsubrack,
theDTRUsubrack,andtheDAFUsubrack
TheFANBoxismandatorywithfourindependentaxialflow
fans.Thefans'speedandrunningstatusarecontrolledby
theFanControllingandMonitoringBoard
FANSTATE
COM
PWR

IndicatorsonFANBOX
Thereisnopowersupplyandthe
boardisfaulty
OffGreenorred
ororange
Theboardsoftwareisbeing
ungraded
OnOrange(red
andgreen)
TheboardisrunningnormallySlowflash(0.5
Hz)
Green
AlarmoccurstotheboardFastflash(4Hz)Red
CommunicationbetweentheNFCB
andtheDTMUisabnormal.Thereis
noalarm
Fastflash(4Hz)GreenSTATE
MeaningStatusColorIndicator

SystemSignalFlow
thesignalflowoftheserviceandsignalinginclude
DLSignalFlow
ULSignalFlow
SignalingProcessingSignalFlow
ClockSignalFlow
CombinedCabinetSignalFlow

DLSignalFlow
D
D
P
U
Um
BSC
BTS3012Cabinet
MS
Antenna
Feeder
Abis
D
T
R
U
D
T
M
U

DLSignalFlow
TheDLsignalflowincludesthefollowingsteps:
TheDTMUreceivestheservicedatafromtheBSC,exchanges
andprocessesit,andthentransfersittotheDTRU
TheDTRUperformsdigitalfiltering,upconversion,andfilter
amplificationofthesignalsandsendsthesignalstotheDDPU
TheduplexerintheDDPUfiltersthesignalssentfromthe
DTRUandtransmitsthesignalsthroughantennasandfeeders

ULSignalFlow
D
A
F
U
Um
BSC
BTS3012Cabinet
MS
Antenna
Feeder
Abis
D
T
R
U
D
T
M
U

ULSignalFlow
TheULsignalflowincludesthefollowingsteps:
TheantennareceivesthesignalstransmittedfromtheMS.Afterbeing
amplifiedbytheTMA,thesignalsaretransmittedtotheDDPU
throughthefeeder.TheTMAisoptional.Itisusedtocompensatethe
feederlossandenhancereceiversensitivityoftheDDPUantenna
port
TheDDPUreceivesthesignalsandtransmitsthesignalstotheDTRU
aftertheyarefilteredbytheduplexerandamplifiedbytheLNA
TheDTRUreceivesthesignalsandtransmitsthesignalstotheDTMU
afteramplificationanddownconversion.TheDTMUthentransmits
thesignalstotheBSCthroughtheAbisinterface

BTS3012
DDPUDTRUDTMU
BSC
Abis

Thesignalingprocessingsignalflowincludesthefollowingsteps:
TheAbisinterfaceboardreceivesthesignalingdatafromtheBSC
andtransmitsthedatatotheDTMU
TheDTMUperformsdecisionandprocessingonthesignalingand
transmitsthesignalingtotheDTRUandDDPU
TheDTRUandDDPUreportboardstatustotheDTMU
TheDTMUobtainsthestatusoftheBTS3012bycollectingand
analyzingthestatusofallboardsandtransmitstheinformationtothe
BSCthroughtheAbisinterface

ClockSignalFlow
DTMU
Boardsinmain
cabinet
Boardsinslave
cabinet
A-bis
Clockdistribution
cablebetween
cabinets

ClockSignalFlowDescription
Theclocksignalflowincludesthefollowingsteps:
Theexternalreferenceclockistransmittedtotheclockmodule
intheDTMUthroughtheAbisinterface
Theclockmoduleperformsphaselockandfrequencydivision
ontheclocksignalstogeneratedifferentclocksignalsfor
BTSs
Theclocksignalsaretransmittedtothemodulesinthemain
cabinetsuchastheDTRUandtheDDPU
Theclocksignalsaretransmittedtothemodulesintheslave
cabinetsthroughtheclockdistributioncable

AntennaFeedersubsystem
Antenna
TMA
Antenna
support
Jumper
Jumper
Feeder
Jumper
Antenna
Feeder
Jumpers
TMA

Antenna
Inmobilecommunicationssystems,theantennaconsistsof
anarrayofelementantennas,asshowninFigure
Element
antenna
Feeding
network
Antenna
connector
DirectionalantennaOmnidirectionalantenna
Feeding
network
Element
antenna
Feeding
network
Antenna
connector

Antenna
BTS3012antennasareclassified:
Byradiationfeaturesinhorizontaldirections:omnidirectional
antennasanddirectionalantennas
Bypolarizationfeatures:singlepolarizationantennasanddual
polarizationantennas
Omnidirectional
antenna
Singlepolarization
antenna
Dualpolarization
antenna

LightningArresterisusedto
preventtheequipmentfrom
beingdamagedbythe
lighteningcurrentinductedby
thecorelineofthefeeder
feeder
jumper
LightningArrester
LightningArrester

TypesofMainFeeder
7/8inch
Cableloss=0.043dB/m
5/4inch
Cableloss=0.032dB/m
1/2inchjumper
Cableloss=0.11dB/m
Usedbetweentheantennaandthemainfeeder
Betweentheantennaandthetower-topamplifier
Betweenthecabinetandthelightningarrester

TMA
Thetowermountedamplifier(TMA)isalownoise
amplificationmoduleinstalledonthetowertop.TheTMAis
optional.ThetriplexTMAisusuallyusedandinstalledclose
totheantenna.ThetriplexTMAconsistsoftriplexfilter,low
noiseamplification,andfeeder
Lower
noise
amplific
-ation
Sending
filter
Receiving
filter
Bypass
DC
BTS
TMA
Feeder
Receiving
filter

AntennaPattern
Theantennapatterndescribestheradiatingabilitiesof
antennasinalldirections
360¡ã
OmniAntennaDirectionalantenna
120¡ã90¡ã65¡ã

Polarization
Twomaintypesofpolarization
Verticalpolarization
Horizontalpolarization
Thetypesofantennadividedbypolarization
Singlepolarizedantenna
VerticalpolarizationforGSM
Oneportforonefeeder
Dualpolarizedantenna
+45degreeand-45degree
Twoportsfortwofeeders

ConfigurationPrinciples
TheconfigurationprinciplesoftheBTS3012cabinetareasfollows:
Theminimumantennarule
useasfewaspossibleantennasforcellconfiguration.
Theminimumcabinetrule
useasfewaspossiblecabinetsforcellconfiguration.
Thecompletesynchronouscellrule
allTRXsofasynchronouscellareconfiguredinthesamecabinet
group
Thebasiccabinetpriorityrule
TRXsareconfiguredinthebasiccabinetinpreference,andthe
numberofTRXsinthebasiccabinetisnotlessthanthatinany
extensioncabinet

ConfigurationPrinciples
TheBTS3012supportstheomnidirectionalcoverageandthedirectional
coverage.
TheBTS3012supportsthecombinationoftwocabinetstoformonegroup
andthecombinationofthreecabinetgroups.
TheBTS3012supportsthetransmitdiversityand4-waydiversityreceive.
TheDCOMcombinestwocarriersintoonechannel(thetwo-into-one
function).TheDCOMisrequiredwhentheDTRUsarenotsufficient.
TheBTS3012usesDTRU.Onesinglecabinetsupportsupto12TRXsin
fullconfiguration.
Themaximumnumberofcarriersiseightinacellwithapairofdual
polarizationantennasortwoomnidirectionalantennasofasingle
sectorizedcell

TypicalconfigurationS1/1/1
（Diversitytransmitter）
S1/1/1Diversitytransmitter/Four
diversityreceivermode，eachcellis
configuredoneDTRUandtwoDDPU
BSCdataconfigurationshouldbe
Diversitytransmittermode
Fourdiversityreceivermode
CabinetToppower（dBm）
（46or47.8）-1.0
DTRU
DDPU
TXB
RXB1
RXA1
RXA2
RXA3
RXA4
RXB2
RXB3
RXB4
TXA
DDPU
TXB
RXB1
RXA1
RXA2
RXA3
RXA4
RXB2
RXB3
RXB4
TXA
TX1
TCOM
RXM1
RXM2
RXD1
RXD2
TX2
IN2
IN1

（Nocombiningmode）
S2/2/2transmitindependencemode，eachcellis
configuredoneDTRUandoneDDPU
Theconnectionforonecellisshowedintheright
slide
Nocombiningmode
Dividingreceivermode
（46or47.8）-1.0
DDPU
TXB
RXB1
RXA1
RXA2
RXA3
RXA4
RXB2
RXB3
RXB4
TXA
DTRU
TX1
TCOM
RXM1
RXM2
RXD1
RXD2
TX2
IN2
IN1

（Powerboostertechnology）
S2/2/2PBTmode，eachcellis
configuredtwoDTRUandoneDDPU
Theconnectionforonecellisshowedin
therightslide
Powerboostertechnologymode
Independentreceivermode
49-1.0
DDPU
TXB
RXB1
RXA1
RXA2
RXA3
RXA4
RXB2
RXB3
RXB4
TXA
DTRU
TX1
TCOM
RXM1
RXM2
RXD1
RXD2
TX2
IN2
IN1
DTRU
TX1
TCOM
RXM1
RXM2
RXD1
RXD2
TX2
IN2
IN1

（Widebandcombining）
S4/4/4Widebandcombining
mode，eachcellisconfiguredtwo
DTRUandoneDDPU
Widebandcombiningmode
（46or47.8）-3.3-1.0
DDPU
TXB
RXB1
RXA1
RXA2
RXA3
RXA4
RXB2
RXB3
RXB4
TXA
DTRU
TX1
TCOM
RXM1
RXM2
RXD1
RXD2
TX2
IN2
IN1
DTRU
TX1
TCOM
RXM1
RXM2
RXD1
RXD2
TX2
IN2
IN1

TypicalConfigurationS1/2/1
S1/2/1,cell1andcell3shareone
DTRU,cell2needoneDTRUand
oneDDPU
Nocombiningmode
Independentreceivermode
Nocombiningmode
（46or47.8）-1.0
DTRU
TX1
TCOM
RXM1
RXM2
RXD1
RXD2
TX2
IN2
IN1
DDPU
TXB
RXB1
RXA1
RXA2
RXA3
RXA4
RXB2
RXB3
RXB4
TXA
DDPU
TXB
RXB1
RXA1
RXA2
RXA3
RXA4
RXB2
RXB3
RXB4
TXA
DDPU
TXB
RXB1
RXA1
RXA2
RXA3
RXA4
RXB2
RXB3
RXB4
TXA
DTRU
TX1
TCOM
RXM1
RXM2
RXD1
RXD2
TX2
IN2
IN1
cell1cell3cell2
DTRU1
DTRU2

S8/8/8cell1andcell3are
configured4DTRU,2DCOM
and1DDPU
BSCdataconfiguration
shouldbe
Widebandcombining
mode
Cabinettoppower（dBm）
（46or47.8）-3.3-3.3-1.0
DTRU
TX1
TCOM
TX2
IN2
IN1
TX2
TX1
DTRU
TX1
TCOM
TX2
IN2
IN1
Tx-com
DTRU
TX1
TCOM
TX2
IN2
IN1
DDPU
TXB
RXB1
RXA1
RXA2
RXA3
RXA4
RXB2
RXB3
RXB4
TXA
TX2
TX1
DTRU
TX1
TCOM
TX2
IN2
IN1
Tx-com
DCOMDCOM

S8/8/8cell2isconfigured
4DTRU,2DCOMand2
DDPU,cell2needcross
thecabinet
BSCdataconfiguration
shouldbe
Widebandcombining
mode
Cabinettoppower（dBm）
（46or47.8）-3.3-3.3-
1.0
Attention：onlysupportRF
hoppingDTRU
TX1
TCOM
TX2
IN2
IN1
DDPU
TXB
RXB1
RXA1
RXA2
RXA3
RXA4
RXB2
RXB3
RXB4
TXA
TX2
TX1
DTRU
TX1
TCOM
TX2
IN2
IN1
Tx-com
RF-EX1
RF-EX2
RF-EX3
RF-EX4
DTRU
TX1
TCOM
TX2
IN2
IN1
DDPU
TXB
RXB1
RXA1
RXA2
RXA3
RXA4
RXB2
RXB3
RXB4
TXA
TX2
TX1
DTRU
TX1
TCOM
TX2
IN2
IN1
Tx-com
RF-EX1
RF-EX2
RF-EX3
RF-EX4
DCOMDCOM

CombinedCabinetSignalCables
Theconnectionofthesignalcablesofthecombinedcabinetisasfollows:
Themainandslavecabinetsareconnectedbythedatacables,
controlcables,andclockcables
Themainandslavecombinedcabinetsareconnectedbytheclock
cablesandcontrolcables
ThemainandslavecabinetsandcombinedcabinetsrequiretheDIP
switches
Slave
cabinet
ofmain
cabinet
group
Main
cabinet
ofmain
cabinet
group
Main
cabinet
of
slave
cabinet
group
Slave
cabinet
of
slave
cabinet
group
Datacable
Clockcable
Controlcable
Clockcable
Controlcable
Datacable
Clockcable
Controlcable

Summary
FunctionsandfeaturesofBTS3012
BTS3012hardwarestructure
Antennaandfeedersystem
Typicalconfiguration

Huawei BTS3012 Hardware Structure Guide

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