管理制度-西门子通讯 3GPP IP多媒体子系统标准化介绍 33页 精品.ppt

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1、3GPP IP多媒体子系统多媒体子系统 (IMS)标准化介绍标准化介绍无线通信技术委员会第一次全会无线通信技术委员会第一次全会WG2#1会议会议北京北京2003.8.27-29来源：来源：冯冯 勤勤西门子公司西门子公司无线通信技术委员会第一次全会 WG2#1会议 2003.8.27-29, Page 2内容内容nIMS概述概述n3GPP组织结构组织结构nIMS Release 5规范规范nIMS Release 6研究研究n总结总结I M S无线通信技术委员会第一次全会 WG2#1会议 2003.8.27-29, Page 33GPP Release 99 网络结构网络结构PSTN/ISDNR

2、adio Access NetworkInterworkedNetworkGSM Base Station SystemBTSBSCPSTN/ISDNCircuit Switched (CS) domainotherPLMNASCPHLRCAPCore NetworkGbGPRS backboneIP transportPacket Switched (PS) domainGGSNGnInternetIntranetMSC-VLRSGSNG-MSCMAPMAPMAPCAPSMS SCGpGiUMTS Terrestrial Radio Access NetworkNodeBRNCIu PSIu

3、 CS无线通信技术委员会第一次全会 WG2#1会议 2003.8.27-29, Page 43GPP Release 4 电路交换域中实现呼叫控制与电路交换域中实现呼叫控制与传输的分离传输的分离IP or ATMtransportAccess NetworkInterworkedNetworkPSTN/ISDNCircuit Switched (CS) domainotherPLMNSCPHLRCore NetworkMSCserverNodeBRNCUTRANIu CSG-MSCserverBICCMAPCAPMGWCS-MGWH.248 / MEGACO basedH.248 / MEGA

4、CO basedGSM Base Station SystemBTSBSCA无线通信技术委员会第一次全会 WG2#1会议 2003.8.27-29, Page 53GPP Release 5 分组交换域结构分组交换域结构InternetAccess NetworkInterworkedNetworkGSM BSSBTSBSCPSTN/ISDNGb/Iu PSservices &applicationsHLRCore NetworkCSCFNodeBRNCUTRANIu PSMGCFMAPHSSMGWSIPH.248IP transportPacket Switched (PS) domainG

5、GSN3G-SGSNGiSIPIP access with mobilityservices &applicationsCircuit Switched (CS) domain无线通信技术委员会第一次全会 WG2#1会议 2003.8.27-29, Page 63GPP Release 5 分组交换域结构（分层）分组交换域结构（分层）Legacy PLMNSignalingNetworksUTRANIN/CAMEL, OSA/Parlay, SIP applications3G-GGSN3G-SGSNMGCFCSCFMGWExternal IPNetworksIP Multimedia Sub

6、systemDatabasesHSSPacket Switched DomainPOTS/ISDNTDMIPWeb / EmailWeb serverApplication PlatformMultimedia phoneSIP Communication (IMS)Internet Access without IMS无线通信技术委员会第一次全会 WG2#1会议 2003.8.27-29, Page 7IP多媒体子系统（多媒体子系统（IMS）The IP Multimedia Subsystem (IMS)n provides a standardised multimedia soluti

7、on for 3G networks on top of the IP bearer provided by GPRSn includes functionality for security, charging, roaming, and Quality of Service n is regarded as the generic service enabler for future IP multimedia applications in 3GPP networks Examples: Presence and Messaging Services will be standardis

8、ed via IMSn is based on IETF Protocols SIP and SIP extensions Diameter, COPS, 无线通信技术委员会第一次全会 WG2#1会议 2003.8.27-29, Page 8IMS: Key Principlesn SIP as the single Call Control“ Protocol for IP Multimedia Servicesn Use IPv6 all IMS Network Entities including the mobile terminal use IPv6n Home Control th

9、e home network controls the services for a roaming usern Access Independence the IMS is designed independent of the underlying IP connectivity network specifications re-used by 3GPP2 for CDMA2000 systems access via WLAN will be definedn Allow Binding between SIP Dialogue and the GPRS Media Session v

10、ia Go interface in particular for QoS and Charging无线通信技术委员会第一次全会 WG2#1会议 2003.8.27-29, Page 9IMS in 3GPP Release 5 网络实体和协议网络实体和协议CS Domain-or-PSTN-or-Legacy-or-ExternalApplicationsand ServicesSCPASMultimediaIPNetworksSIPTCPUDPHTTPOthersSIPOperator 1MRF-CMGCFCxScGrMmMnGcMgBGCFMiGoGmSLFMRF-PMpISCSIPDi

11、ameterH248SIPH248COPSSIPDiameterMAPSIPMjISUPSGWMrCSCFMwBGCFMkOperator 2SIPDxSIPShMAPMGWSGWSIPSIPCAPOSASiIM-SSFOSA-SCSDiameterCAPCSCFPDFHSSHLRPS DomainGGSNSGSNGnAlternativeAccess NetworksTCP/IP/UDP/RTP/UEUTRANMTTEUuIuRGERAN无线通信技术委员会第一次全会 WG2#1会议 2003.8.27-29, Page 10IMS 网络实体网络实体n CSCF (Call Session C

12、ontrol Function)n HSS (Home Subscriber Server)n PDF (Policy Decision Function)n SLF (Subscription Locator Function)n MRF (Multimedia Resource Function)n BGCF (Breakout Gateway Control Function)n MGCF (Media Gateway Control Function)n MGW (Media Gateway)n SGW (Signalling Gateway)n AS (Application Ser

13、ver)n IM-SSF (IP Multimedia Service Switching Function)n OSA-SCS (Service Capability Server)Additionally:- QoS Entities- Charging Entities- Security Entities- Presence Service Entities- Location Service Entities- Push Service Entities- OAM and NM Entities- Firewalls, NAT, IPv4/v6, - DNS, DHCP, 无线通信技

14、术委员会第一次全会 WG2#1会议 2003.8.27-29, Page 11P-CSCF (Proxy CSCF)First contact point of an operators network (within IMS CN subsystem)n Forwarding of SIP messages between UE and CNn Generation of charging recordsn Translation of IDs other than SIP URIs into SIP URIs(e.g. E.164 numbers)n Authorisation of be

15、arer resources and QoS management无线通信技术委员会第一次全会 WG2#1会议 2003.8.27-29, Page 12I-CSCF (Interrogating CSCF)First contact point of an operators network (for other operators)n Forwarding of SIP messages (proxy functionality)n Assignment of a S-CSCF n Generation of charging recordsn Hiding of internal net

16、work configuration/capacity/topology无线通信技术委员会第一次全会 WG2#1会议 2003.8.27-29, Page 13S-CSCF (Serving CSCF)Performs session control and service triggeringn Acts as a registrar n May behave as a Proxy Server, i.e. it accepts requests and services or forwards them on.n May behave as a User Agent, i.e. it may terminate and independently generate SIP transactions.n Interaction with service platform(s)n Generation of charging recordsn Authentication无线通信技术委员会第一次全会 WG2#1会议 2003.8.27-29, Page 14HSSDatabase fo