3GPPTR36.843V12.0.1(2014-03)TechnicalReport3rdGenerationPartnershipProject;TechnicalSpecificationGroupRadioAccessNetwork;StudyonLTEDevicetoDeviceProximityServices;RadioAspects(Release12)Thepresentdocumenthasbeendevelopedwithinthe3rdGenerationPartnershipProject(3GPPTM)andmaybefurtherelaboratedforthepurposesof3GPP.Thepresentdocumenthasnotbeensubjecttoanyapprovalprocessbythe3GPPOrganizationalPartnersandshallnotbeimplemented.ThisReportisprovidedforfuturedevelopmentworkwithin3GPPonly.TheOrganizationalPartnersacceptnoliabilityforanyuseofthisSpecification.SpecificationsandReportsforimplementationofthe3GPPTMsystemshouldbeobtainedviathe3GPPOrganizationalPartners'PublicationsOffices.3GPP3GPPTR36.843V12.0.1(2014-03)2Release12KeywordsLTE,Device-to-Device3GPPPostaladdress3GPPsupportofficeaddress650RoutedesLucioles-SophiaAntipolisValbonne-FRANCETel.:+33492944200Fax:+33493654716Internet©2014,3GPPOrganizationalPartners(ARIB,ATIS,CCSA,ETSI,TTA,TTC).Allrightsreserved.UMTS™isaTradeMarkofETSIregisteredforthebenefitofitsmembers3GPP™isaTradeMarkofETSIregisteredforthebenefitofitsMembersandofthe3GPPOrganizationalPartnersLTE™isaTradeMarkofETSIregisteredforthebenefitofitsMembersandofthe3GPPOrganizationalPartnersGSM®andtheGSMlogoareregisteredandownedbytheGSMAssociation3GPP3GPPTR36.843V12.0.1(2014-03)3Release12ContentsForeword.............................................................................................................................................................51Scope........................................................................................................................................................62References................................................................................................................................................73Definitionsandabbreviations...................................................................................................................83.1Definitions.........................................................................................................................................................83.2Abbreviations.....................................................................................................................................................84PublicSafetyUseCasesandScenarios....................................................................................................95Requirements..........................................................................................................................................106Generaldesignassumptions...................................................................................................................106.1Multipleaccessscheme...................................................................................................................................106.1.1UEtransmitterperformance.......................................................................................................................116.1.2UEreceiverperformance...........................................................................................................................116.2Multiplexingofsignals....................................................................................................................................116.3Signaldesigndetails........................................................................................................................................127Synchronization......................................................................................................................................137.1Signaldesign....................................................................................................................................................137.2Procedure.........................................................................................................................................................137.2.1TransmissionofD2DSS.............................................................................................................................137.2.2SelectionoftimingreferenceD2DSynchronizationSource......................................................................147.2.3Transmissiontimingoffset.........................................................................................................................148Discovery...............................................................................................................................................168.1TypesofDiscovery..........................................................................................................................................168.2Physicallayerdesign...........................................................................................................