D2D-Proximity-based-services(ProSe).ppt
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1、LTE-C组会汇报Proximity-based services(ProSe)2015-3-25Functions Architectural Reference ModelAuthorization and provisionProcedure FlowProSe Direct discoveryProSe Direct communicationProSe UE-to-Network RelayEPC-level ProSe discoveryFunctionsThe 3GPP system enablers for ProSe(Proximity Services)include th
2、e following functions:-Direct discovery;-Direct communication;-UE-to-Network Relay.-EPC-level ProSe Discovery;-EPC support for WLAN direct discovery and communication;Functions Architectural Reference ModelAuthorization and provisionProcedure FlowProSe Direct discoveryProSe Direct communicationProSe
3、 UE-to-Network RelayEPC-level ProSe discoveryArchitectural Reference ModelPC3-the reference point between the UE and the Prose Function.PC3 relies on EPC user plane for transport(i.e.an“over IP”reference point).It used.Prose Function is the logical function that is used for network related actions r
4、equired for Prose.Inter-PLMNRoaming Control and user plane stackspage26Functions Architectural Reference ModelAuthorization and provisionProcedure FlowProSe Direct discoveryProSe Direct communicationProSe UE-to-Network RelayEPC-level ProSe discoveryAuthorization and provisioning for ProSeThe basic p
5、rinciples of service authorization for ProSe Direct service:-the UE gets authorization to use ProSe Direct Discovery-the UE gets authorization to use ProSe Direct Communication in the serving PLMN by the ProSe Function in the HPLMN,-the ProSe Function in the HPLMN requests authorisation information
6、from the ProSe Function of the serving PLMN and Local PLMN(s).-The ProSe Function in the HPLMN merges authorization information from home,serving and local PLMNs.-Final authorization comes from the ProSe Function in the Home PLMN.Provisioning for ProSe Direct discovery&commPre-configure UE with prov
7、isioning parametersThe provisioning parameters may be configured in the UICC,MEUICC shall indicate whether the UE is authorized to use provisioning parameters.UE shall use radio resources for dir comm as follows:-camped on a cell,and use the radio resources operated by the cell.If the cell does not
8、provide radio resources for Prose,UE shall noton the resources.-search for a cell that is operating the provisioned radio resources -if find such cell,use.If the cell does not provide for ProSe,shall noton those resources.Avoid interference -not find such cell,UE shall use radio resources provisione
9、d in the ME or UICC.UE provisioning shall support setting Geographical Areas.UE can use other radio resources for ProSe based on the Geographical AreasTo prevent misuse of licensed spectrum resources,regional regulatory requirements can make the provisioning and use of Geographical Areas mandatory f
10、or a UE to use ProSe when“not served by E-UTRAN”in that particular region.Provisioning information for ProSe Direct discoveryThe following information is provisioned to UE for authorization1)Authorisation policy:-When the UE is served by E-UTRAN:Monitoring:PLMNs in which UE is authorizedAnnouncing:P
11、LMNs in which.authorized discovery range for announcing-When the UE is not served by E-UTRAN:-Indicates whether the UE is authorised to performProvisioning information for ProSe Direct discovery2)Radio parameters when the UE is not served by E-UTRAN:-Includes the radio parameters,optionally with Geo
12、graphical Area(s),that need to be configured in the UE in order to be able perform ProSe Direct Discovery procedures when not served by E-UTRAN.This includes e.g.frequency bands.-The UE uses the radio parameters configured with Geographical Areas first.Only if the UE cannot locate itself in any Geog
13、raphical Area,it can use radio parameters provisioned without Geographical Areas.Provisioning information for ProSe Direct communication1)Authorisation policy:-When the UE is served by E-UTRAN:-PLMNs in which the UE is authorised to perform-When the UE is not served by E-UTRAN:-Indicates whether the
14、 UE is authorised to perform2)ProSe Direct Communication policy/parameters:Include the parameters that enable the UE to perform:-ProSe Layer-2 Group ID;-ProSe Group IP multicast address-Indication whether the UE should use IPv4 or IPv6 for that group-For a specific Group configured to operate using
15、IPv4,optionally an IPv4 address to be used by the UE as a source address.-Include group security related content 3)Radio parameters for when the UE is not served by E-UTRAN:Subscription to ProSeThe users profile in HSS contains the subscription information to give the user permission to use ProSe.Ad
16、ditional parameters(list of the PLMNs authorized for Prose direct)may be stored in the users profile.Service authorisation and revocation for ProSe DirectService authorisation procedures HPLMN pre-configured UE with the authorization information for a list of PLMNs where the UE is authorized If ther
17、e is no associated UE context,the ProSe Function gets the subscription information from HSS.Service authorisation procedures The procedure is executed:-before starting the setup if the UE has no valid authorization information,or-when the UE changes its registered PLMN and has no valid authorization
18、 information for the new registered PLMN,or-when the service authorisation expires.The UE gets the service authorisation,with a given validity time.The authorisation is happening using over IP mechanisms and only IP connectivity is required to allow the UE to access this ProSe Function.HSS triggered
19、 ProSe direct Service authorization update ProSe function triggered ProSe Direct Service revocationFunctions Architectural Reference ModelAuthorization and provisionProcedure FlowProSe Direct discoveryProSe Direct communicationProSe UE-to-Network RelayEPC-level ProSe discoveryProSe Direct Discovery
20、the process that detects and identifies another UE in proximity using E-UTRA direct radio signals.Can be used:a standalone service enabler that could for example use information from the discovered UE e.g.find a taxi nearby,find me a coffee shop.for subsequent actions e.g.to initiate ProSe Direct Co
21、mmunication,additionally depending on the information obtained,ProSe Direct Discovery Models Model A(I am here)-Announcing UE:announces(broadcast)certain information(Code)that could be used by UEs in proximity that have permission to discover.-Monitoring UE:monitors certain information of interest i
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- 关 键 词:
- D2D Proximity based services ProSe
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