D2D_Proximity-based services(ProSe)

LTE C组会汇报Proximity basedservices ProSe 2015 3 25 FunctionsArchitecturalReferenceModelAuthorizationandprovisionProcedureFlowProSeDirectdiscoveryProSeDirectcommunicationProSeUE to NetworkRelayEPC levelProSediscovery Functions The3GPPsystemenablersforProSe ProximityServices includethefollowingfunctions Directdiscovery Directcommunication UE to NetworkRelay EPC levelProSeDiscovery EPCsupportforWLANdirectdiscoveryandcommunication FunctionsArchitecturalReferenceModelAuthorizationandprovisionProcedureFlowProSeDirectdiscoveryProSeDirectcommunicationProSeUE to NetworkRelayEPC levelProSediscovery ArchitecturalReferenceModel PC3 thereferencepointbetweentheUEandtheProseFunction PC3reliesonEPCuserplanefortransport i e an overIP referencepoint Itused ProseFunctionisthelogicalfunctionthatisusedfornetworkrelatedactionsrequiredforProse Inter PLMN Roaming Controlanduserplanestacks page26 FunctionsArchitecturalReferenceModelAuthorizationandprovisionProcedureFlowProSeDirectdiscoveryProSeDirectcommunicationProSeUE to NetworkRelayEPC levelProSediscovery AuthorizationandprovisioningforProSe ThebasicprinciplesofserviceauthorizationforProSeDirectservice theUEgetsauthorizationtouseProSeDirectDiscovery theUEgetsauthorizationtouseProSeDirectCommunicationintheservingPLMNbytheProSeFunctionintheHPLMN theProSeFunctionintheHPLMNrequestsauthorisationinformationfromtheProSeFunctionoftheservingPLMNandLocalPLMN s TheProSeFunctionintheHPLMNmergesauthorizationinformationfromhome servingandlocalPLMNs FinalauthorizationcomesfromtheProSeFunctionintheHomePLMN ProvisioningforProSeDirectdiscovery comm Pre configureUEwithprovisioningparametersTheprovisioningparametersmaybeconfiguredintheUICC MEUICCshallindicatewhethertheUEisauthorizedtouseprovisioningparameters UEshalluseradioresourcesfordircommasfollows campedonacell andusetheradioresourcesoperatedbythecell IfthecelldoesnotprovideradioresourcesforProse UEshallnot ontheresources searchforacellthatisoperatingtheprovisionedradioresources iffindsuchcell use IfthecelldoesnotprovideforProSe shallnot onthoseresources Avoidinterference notfindsuchcell UEshalluseradioresourcesprovisionedintheMEorUICC UEprovisioningshallsupportsettingGeographicalAreas UEcanuseotherradioresourcesforProSebasedontheGeographicalAreasTopreventmisuseoflicensedspectrumresources regionalregulatoryrequirementscanmaketheprovisioninganduseofGeographicalAreasmandatoryforaUEtouseProSewhen notservedbyE UTRAN inthatparticularregion ProvisioninginformationforProSeDirectdiscovery ThefollowinginformationisprovisionedtoUEforauthorization1 Authorisationpolicy WhentheUEis servedbyE UTRAN Monitoring PLMNsinwhichUEisauthorizedAnnouncing PLMNsinwhich authorizeddiscoveryrangeforannouncing WhentheUEis notservedbyE UTRAN IndicateswhethertheUEisauthorisedtoperform ProvisioninginformationforProSeDirectdiscovery 2 RadioparameterswhentheUEis notservedbyE UTRAN Includestheradioparameters optionallywithGeographicalArea s thatneedtobeconfiguredintheUEinordertobeableperformProSeDirectDiscoveryprocedureswhennot servedbyE UTRAN Thisincludese g frequencybands TheUEusestheradioparametersconfiguredwithGeographicalAreasfirst OnlyiftheUEcannotlocateitselfinanyGeographicalArea itcanuseradioparametersprovisionedwithoutGeographicalAreas ProvisioninginformationforProSeDirectcommunication 1 Authorisationpolicy WhentheUEis servedbyE UTRAN PLMNsinwhichtheUEisauthorisedtoperform WhentheUEis notservedbyE UTRAN IndicateswhethertheUEisauthorisedtoperform 2 ProSeDirectCommunicationpolicy parameters IncludetheparametersthatenabletheUEtoperform ProSeLayer 2GroupID ProSeGroupIPmulticastaddress IndicationwhethertheUEshoulduseIPv4orIPv6forthatgroup ForaspecificGroupconfiguredtooperateusingIPv4 optionallyanIPv4addresstobeusedbytheUEasasourceaddress Includegroupsecurityrelatedcontent3 RadioparametersforwhentheUEis notservedbyE UTRAN SubscriptiontoProSe Theuser sprofileinHSScontainsthesubscriptioninformationtogivetheuserpermissiontouseProSe Additionalparameters listofthePLMNsauthorizedforProsedirect maybestoredintheuser sprofile ServiceauthorisationandrevocationforProSeDirect Serviceauthorisationprocedures HPLMNpre configuredUEwiththeauthorizationinformationforalistofPLMNswheretheUEisauthorizedIfthereisnoassociatedUEcontext theProSeFunctiongetsthesubscriptioninformationfromHSS Serviceauthorisationprocedures Theprocedureisexecuted beforestartingthesetupiftheUEhasnovalidauthorizationinformation or whentheUEchangesitsregisteredPLMNandhasnovalidauthorizationinformationforthenewregisteredPLMN orwhentheserviceauthorisationexpires TheUEgetstheserviceauthorisation withagivenvaliditytime Theauthorisationishappeningusing overIP mechanismsandonlyIPconnectivityisrequiredtoallowtheUEtoaccessthisProSeFunction HSStriggeredProSedirectServiceauthorizationupdateProSefunctiontriggeredProSeDirectServicerevocation FunctionsArchitecturalReferenceModelAuthorizationandprovisionProcedureFlowProSeDirectdiscoveryProSeDirectcommunicationProSeUE to NetworkRelayEPC levelProSediscovery ProSeDirectDiscovery theprocessthatdetectsandidentifiesanotherUEinproximityusingE UTRAdirectradiosignals Canbeused astandaloneserviceenablerthatcouldforexampleuseinformationfromthediscoveredUEe g findataxinearby findmeacoffeeshop forsubsequentactionse g toinitiateProSeDirectCommunication additionallydependingontheinformationobtained ProSeDirectDiscoveryModels ModelA Iamhere AnnouncingUE announces broadcast certaininformation Code thatcouldbeusedbyUEsinproximitythathavepermissiontodiscover MonitoringUE monitorscertaininformationofinterestinproximityofannouncingUEs ModelB whoisthere areyouthere DiscovererUE TheUEtransmitsarequestcontainingcertaininformationaboutwhatitisinterestedtodiscover e g toagroup DiscovereeUE TheUEthatreceivestherequestmessagecanrespondwithsomeinformationrelatedtothediscoverer srequest Overallprocedure ModelA ServiceauthorizationSendsadiscoveryrequestprovidedwithProSeApplicationCode thenstartannouncingSendsadiscoveryrequestprovidedwithaDiscoveryFilter startmonitoring4 WhenUEDetectcodematchthefilter reportthecodetoProSeFunction Identifier ApplicationID Agloballyuniqueidentifieridentifyingaspecificapplication ProSeApplicationID anidentityusedforProSeDirectDiscovery identifyingapplicationrelatedinformationfortheProSe enabledUE EachProSeApplicationIDcouldbegloballyuniqueProSeApplicationCode associatedwiththeProSeApplicationIDandusedinthediscoveryprocedures ProSeApplicationMask providedbytheProSeFunctioninordertoallowthemonitoringUEtoperformpartialmatchingofProSeApplicationCodesonthePC5interface DiscoveryFilter AcontainerofaProSeApplicationcode zeroormoreProSeApplicationMask s andTimeToLivevalue s TheseareusedbythemonitoringUEtomatchProSeApplicationCodesthatarereceivedonthePC5interfaceforDirectDiscovery DiscoveryRequest Announcerequest 0 WithdatastructureofID ID1indicateswhattheUEisinterestedtoannounce ID2 auniqueidentifieroftheapplicationthattriggeredtherequest Checktheauthorization ifnoUEcontext checkwithHSS createaUEcontext containingthevaliditytime HSSprovideMSISDN checkauthorization thenrespondwithCode time UEannouncethisCodeforthevaliditytime IfExpires anewrequest ResourcesconfiguredbyE UTRAN Announcerequest roaming Monitorrequest ID1 whattheUEisinterestedtomonitor indicatesanotherlocalPLMNs orHPLMNSendotherPLMNsIDname IfPLMNstoresCodecorrespondingtotheIDname thenreturnsCode Mask TTL RespondtoUE withFilter UEmonitoringusingthisFilter ResourcesconfiguredbyE UTRAN ID1indicateswhattheUEisinterestedtomonitor ID2 auniqueidentifieroftheapplicationthattriggeredtherequest ID1indicatesanotherlocalPLMN orHPLMNSendotherPLMNsIDname IfPLMNstoresCodecorrespondingtotheIDname thenreturnsCode Mask TTL RespondtoUE withFilter UEmonitoringusingthisFilter ResourcesconfiguredbyE UTRAN Monitorrequest roaming DiscoveryReporting Matchreport UEfindsCode notstoredbefore thatmatchestheFilter sendamatchreport Checkthecontext authorizationfordiscovery AnalysetheCodewhetherotherPLMNs orHPLMNSendamatchreporttootherPLMNsAnalysetheCode checkifstillvalid MatchreportACKACK UEstoresthemappingforvaliditytime Alsocontainsmetadatae g address Matchreport roaming ProceduresforProSeDirectCommunication One to manydirectcommunicationProSeDirectCommunication bymeansofuserplanetransmissionusingE UTRAtechnologyviaapathnottraversinganynetworknode CharacteristicsConnectionlessNoQoSsupportNosupportforpriorityhandlingRadiolayerprovidesauserplanecommunicationservicefortransmissionofIPpackets AuthorisationisconfiguredinUEbyProSeFunctionProSeUEconfigurationparametersareconfiguredintheUE Identifier ProSeUEID alinklayeridentifierthatisusedasasourceLayer 2IDinallthepacketstheUEsendsfordirectcommunication ProSeLayer 2GroupID Apre configuredlinklayeridentifierthatidentifiesthegroupinthecontextofone to manyProSeDirectcommunication usedasadestinationLayer 2ID Transmission obtainsthegroupcontext GroupID multicastaddress totransmit andtheradioresourcerelatedparameters UEfindstheradioresource UEsendstheIPdatatotheIPmulticastaddressusingtheGroupIDasDestinationLayer 2ID Reception obtainsthegroupcontext GroupID multicastaddress toreceive andtheradioresourcerelatedparameters listenstotheallocatedradioresourcetoreceive filtersthereceivedframesbasedontheGroupID ifitmatchesoneoftheconfiguredGroupIDs itdeliverstoupperlayer IPstackfiltersthereceivedpacketsbasedontheGroupIPmulticastaddress DirectcommunicationviaProSeUE to NetworkRelay RemoteUE AProSe enabledPublicSafetyUE thatisnotservedbyE UTRAN andthatcommunicateswithaPDNviaaProSeUE to NetworkRelay ProSeUE to NetworkRelay AUEthatprovidesfunctionalitytosupportconnectivityto unicast servicesforRemoteUE s IPv6StatelessAddressauto configuration RelayobtainsIPv6prefixDiscovereachother RelayprovideinformationassistRemoteUE relayselection SelectaProSeUEIDofRelaysthatcorrespondstothePDNconnectionitwanttoconnect RemoteUEsendaRouterSolicitationmessagetotheRelay usingtheProSeIDoftheRelayasdestinationLayer 2address RelaysendanIPv6RouterAdvertisementmessage containingtheassignedIPv6prefix RemoteUEreceivestheRA constructsafullIPv6addressviaIPv6StatelessAddressauto configuration RemoteUEusetheauto configuredIPv6addresswhilesendingpacketsinthiscreatedPDNconnection RemoteUEisconfiguredtoperformIPv6StatelessAddressauto configuration IPv4AddressallocationusingDHCPv4 theRemoteUEisconfiguredtoperf