C-RAN the Road Towards Green Radio Access Network

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1、C-RAN:theRoadTowardsGreenRadioAccessNetworkDr.Chih-LinIChinaMobileResearchInstituteOctober,2012AgendaofTodayWhat’stheChallengeofOperatorstoday?-ThemobileinternettrafficchallengeWhyC-RANisImportanttoMobileOperators?-Cost,performanceandindustrytrendsHowdoWeDriveC-RANintheFuture?-Jointrequirement,

2、R&D,anddeploymentOperatorstillhasChallengesinMobileInternetEraAgreenevaluationpathisneedforRadioAccessNetworkdeploymentandoperation,toachievehighcapacity,highpowerefficiencyandlowcostPowerconsumingsurgingasBSnumberBScellsiteisthemajorsourceofincreasespowerconsumptionofChinaMobileFastincreasingd

3、atatrafficCAPEXandOPEXassociatedwithcellsitesDynamicnetworkloadchallengebutslowrevenuegrowthBiggetsBigger,SmallgetsSmallerBBUPoolBBUBBUBBUTraditionMacroCellC-RANsystemthatsupportsupports12~36GSMcarriers1000+LTEcarriersandcoverCovers0.2~2kmradius10+kilometerradiusareaRRURRURRURRURRURRURRUIndoor/

4、hotspotcoverageNano-cell/Femto-cellthathasWiFiandLTEcarrierforhotspotandindoorNetworkImplementationwillbetheNextFocusC-RAN:Centralized,Collaborative,Cloud,andCleanSystemCentralizedControlVirtualBSPooland/orProcessing……Centralizedprocessingresourcepoolthatcansupport10~1000cellsReal-timeCloudfor

5、centralizedCollaborativeRadioprocessingMulti-cellJointschedulingandprocessingReal-TimeCloudHighbandwidthTargettoOpenITplatformopticaltransportConsolidatetheprocessingnetworkresourceintoaCloudFlexiblemulti-standardoperationandmigrationRRURRURRUCleanSystemTargetDistributedRRULesspowerconsumi

6、ngRRULowerOPEXRRUFastsystemroll-outRRURRUAgendaofTodayWhat’stheChallengeofOperatorstoday?-ThemobileinternettrafficchallengeWhyC-RANisImportanttoMobileOperators?-Cost,performanceandindustrytrendsHowdoWeDriveC-RANintheFuture?-Jointrequirement,R&D,andapplicationCentralizedDeploymentHelpsCostStru

7、ctureLowerCAPEXandOPEXSaveupto15%CAPEXand50%OPEXcomparedtodistributedBTS3Gnetwork*FastersystemrolloutDuetosimplerremoteradiosite,systemrolloutcansaveupto1/3thetime*0100200300LowerenergyconsumptionSaveupto71%ofpowercomparedtotradit