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1、nodeb设备介绍第二章bburru硬件结构(NodeBequipmentintroductionsecondchapterbburruhardwarestructure)BasicunitofMUframeFrameextensionunitunderEUMasterframeresourceboxhardwarestructureThehardwarestructureoftheBBU/RRUfromthefunctionisdividedintothreeunits:1.digitalco
2、ntrolunitInthemaincontrolbox,theentireNodeBprovidestheRNCinterface,providestheclock,environmentaldetectionandcallcontrolfunctionbox,andprovidestheinternaldataexchangeofNodeB2.channelresourceunitIntheresourcebox,theresourceboxisTD-SCDMAphysicallayerpr
3、ocessingfunctionframe,includingtransmissionchannel,channelboardphysicalchannelprocessing,RFinterfaceboardoftheNodeBindoorunitandaremoteradiounitinterface3.remoteRFunitTD-SCDMAdistributedbasestationRFremoteequipmentRRUconnectionantenna,isthesignalampl
4、ificationandtransceiverfunctionframe.Theopticalfiberlinkinterface,intermediatefrequencyprocessing,highpoweramplifierunderthesmartantenna,smallsignalamplifierofuplinksignal,filterforinputandoutputsignals,upanddownconversionofanalogsignalsandotherfunct
5、ionsarecompletedLogicalstructureThelogicalstructurecanbedividedintoCPBBU01-1327A/CPRRU01-1306C:RNCinterfacemodule:completewithRNCandthesubordinateBBUinterfacefunctionControlandswitchmodule:mainlycompletecallprocessing,operationandmaintenanceprocessin
6、gandinternaldataexchangefunctionThebasebandprocessingmodulemainlycompletephysicallayerprocessingOpticalfiberinterfacemodulemainlycompletestheopticalinterfacefunctionbetweenBBUandRRUTheclockmodulewithGPSorBITSasareferencesource,avarietyofclocksignalto
7、begeneratedinsidetheBBUMonitoringmodule:mainlymonitoringtheenvironmentRemoteRFmodule:providewirelesscoverageofTD-SCDMAnetwork,throughtheUuinterfacetocompletetheUEaccessandwirelesslinktransmissionfunctionIndoorunitBBUisthemainpartofTD-SCDMAdistributed
8、basestationsystem,itcompletesthebasebandsignalprocessing,clockandmonitoringfunction,andimplementationoftheIubinterface,powerinterfaceandlocalmaintenanceinterface,environmentmonitoringinterfaceandGPSinterfaceandoutdoorantenna.BBUusestheexternalalarmbo