36872-c00_Small_cell_enhancements_for_E-UTRA_and_E-UTRAN_-_Physical_layer_aspects

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1、23GPPTR36.872V12.0.0(2013-09)TechnicalReport3rdGenerationPartnershipProject;TechnicalSpecificationGroupRadioAccessNetwork;SmallcellenhancementsforE-UTRAandE-UTRAN-Physicallayeraspects(Release12)Thepresentdocumenthasbeendevelopedwithinthe3rdGeneration

2、PartnershipProject(3GPPTM)andmaybefurtherelaboratedforthepurposesof3GPP.Thepresentdocumenthasnotbeensubjecttoanyapprovalprocessbythe3GPPOrganizationalPartnersandshallnotbeimplemented.ThisSpecificationisprovidedforfuturedevelopmentworkwithin3GPPonly.T

3、heOrganizationalPartnersacceptnoliabilityforanyuseofthisSpecification.Specificationsandreportsforimplementationofthe3GPPTMsystemshouldbeobtainedviathe3GPPOrganizationalPartners'PublicationsOffices.3GPPTR36.872V12.0.0(2013-09)78Release12KeywordsLTE,ra

4、dio,smallcell,physicallayer3GPPPostaladdress3GPPsupportofficeaddress650RoutedesLucioles-SophiaAntipolisValbonne-FRANCETel.:+33492944200Fax:+33493654716Internethttp://www.3gpp.orgCopyrightNotificationNopartmaybereproducedexceptasauthorizedbywrittenper

5、mission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©2013,3GPPOrganizationalPartners(ARIB,ATIS,CCSA,ETSI,TTA,TTC).Allrightsreserved.UMTS™isaTradeMarkofETSIregisteredforthebenefitofitsmembers3GPP™isaTradeMarkofETSIregisteredfo

6、rthebenefitofitsMembersandofthe3GPPOrganizationalPartnersLTE™isaTradeMarkofETSIregisteredforthebenefitofitsMembersandofthe3GPPOrganizationalPartnersGSM®andtheGSMlogoareregisteredandownedbytheGSMAssociation3GPP3GPPTR36.872V12.0.0(2013-09)78Release12Co

7、ntentsForeword5Introduction51Scope62References63Definitionsandabbreviations73.1Definitions73.2Abbreviations75Smallcellscenariosforevaluation85.1Scenario#195.2Scenario#2a105.3Scenario#2b115.4Scenario#3126Potentialenhancementstoimprovespectrumefficienc

8、y136.1Introductionofahigherordermodulationschemeforthedownlink136.2EnhancementsandoverheadreductionforUE-specificreferencesignalsandcontrolsignalling176.2.1OverheadreductionofdownlinkUE-specificreferencesignal176.2.2OverheadreductionofuplinkUE-specif