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1、Lucent Technologies ProprietaryIMSIMS：下一代融合通信网络的引擎下一代融合通信网络的引擎下一代融合通信网络的引擎下一代融合通信网络的引擎IMS:The Engine of Next Generation Convergence Communication NetIMS:The Engine of Next Generation Convergence Communication NetworkworkQing DaoApril 20,2005Qing DaoApril 20,2005George Y.George Y.JiJi,Ph.D.,Ph.D.朗讯科技
2、朗讯科技 下一代网络产品市场总监下一代网络产品市场总监Slide 2Lucent Technologies ProprietaryAgendaAgenda?向基于IMS为核心的NGN网络演进Evolution to IMS Based NGN?朗讯IMS体系结构Lucent IMS Architecture?朗讯NGN/IMS的实现Lucent NGN/IMS Implementation?国际NGN/IMS的标准进展International NGN/IMS standards?朗讯IMS的核心与概要Key Takeaways?向基于向基于IMSIMS为核心的为核心的NGNNGN网络演进网络
3、演进Evolution to IMS Based NGNEvolution to IMS Based NGN?朗讯朗讯IMSIMS体系结构体系结构Lucent IMS ArchitectureLucent IMS Architecture?朗讯朗讯NGN/IMSNGN/IMS的实现的实现Lucent NGN/IMS ImplementationLucent NGN/IMS Implementation?国际国际NGN/IMSNGN/IMS的标准进展的标准进展International NGN/IMS standardsInternational NGN/IMS standards?朗讯朗讯IM
4、SIMS的核心与概要的核心与概要Key TakeawaysKey TakeawaysSlide 3Lucent Technologies Proprietary基于传统软交换网络演进的问题和新的需求基于传统软交换网络演进的问题和新的需求目前的软交换的发展仍有许多问题General Softswitch decomposition of the 1990s did not totally address the underlying market need to drive services forward.对下一代网络的发展，用户仍有很多需求是现有网络结构所无法实现的Evolving cust
5、omer needs add additional requirements on a next generation network architecture.These requirements include:Standardized Solutions Multi-Media“Home Control”New Services(architecture that provides a multi-vendor services delivery environment)Universal Access/Roaming(similar to plugging in laptop)Slid
6、e 4Lucent Technologies Proprietary软交换的演进趋势软交换的演进趋势 向基于向基于IMSIMS为核心下一代网络演进为核心下一代网络演进Consolidated Consolidated SoftSwitchSoftSwitch ModelModel3 3GPP/3GPP2 IMS ModelGPP/3GPP2 IMS Model Limited 3rdparty app support Custom hardware/software No IP Support Bearer follows signaling Limited 3Limited 3rdrdpar
7、ty app supportparty app support Custom hardware/softwareCustom hardware/software No IP SupportNo IP Support Bearer follows signalingBearer follows signalingTraditional Switch ModelTraditional Switch Model Limited 3rdparty API standardization 3rdparty application interactions limited byembedded servi
8、ces/call model Internal element integration limits deployment options Limited 3Limited 3rdrdparty API standardizationparty API standardization 3 3rdrdparty application interactions limited byparty application interactions limited byembedded services/call modelembedded services/call model Internal el
9、ement integration limits deployment optionsInternal element integration limits deployment options+Call control separate from bearer+IP and multi-media enabled+Commodity hardware and standardized interfaces+Better 3rdparty application support+Call control separate from bearerCall control separate fro
10、m bearer+IP and multiIP and multi-media enabledmedia enabled+Commodity hardware and standardized interfacesCommodity hardware and standardized interfaces+Better 3Better 3rdrdparty application supportparty application support+Further decomposition/deployable elements+Flexible data driven session cont
11、rol+Standardized SIP interfaces+Standardized,flexible,application support+Common subscriber data+Further decomposition/deployable elementsFurther decomposition/deployable elements+Flexible data driven session controlFlexible data driven session control+Standardized SIP interfacesStandardized SIP int
12、erfaces+Standardized,flexible,application supportStandardized,flexible,application support+Common subscriber dataCommon subscriber dataH.248/MEGACOJTAPI,Parlay,&ProprietarySignallingSignallingGatewayGatewayEmbeddedEmbeddedServicesServicesMediaMediaGatewayGatewayCall ControlCall ControlMedia GW Media
13、 GW ControllerControllerAppAppServersServersSubscriberSubscriberDataDataWirelineWirelineSubscriberSubscriberDataDataWirelessWirelessSIP,H.323,&MGCPAnalogCircuit WirelessIPEndpointsIPIPMGCFMGCFH.248SIPSignallingSignallingGatewayGatewayMediaMediaGatewayGatewaySession ControlSession ControlCSCFCSCFMedi
14、a GW Media GW ControllerControllerAppAppServersServersSubscriberSubscriberDataDataSIPAnalogCircuit WirelessSIP EndpointsAppAppServersServersAppAppServersServersSIPIPIPIN,AIN,&CamelSignallingSignallingFeaturesFeaturesSwitchSwitchFabricFabricCall ControlCall ControlBearer Path Bearer Path ControlContr
15、olIN IN ServicesServicesSubscriberSubscriberDataDataWirelineWirelineSubscriberSubscriberDataDataWirelessWirelessAnalogCircuit WirelessXMLSlide 5Lucent Technologies Proprietary有线网络和无线网络在有线网络和无线网络在IMSIMS架构下的融合架构下的融合Fixed/Mobile ConvergenceFixed/Mobile Convergence=+IMS for Fixed-OnlyVoIP Inbound(TDM Ac
16、cess)VoIP Outbound(ADSL access)VoIP On Net(ADSL access)Voice MailCLIP/CLIRForwarding/ReroutingBlockingIP CentrexInstant MessagingVideo CallingPresencePresence enabled address bookPush-to-TalkClass 4/5 replacementResidential/Public hotspots.Instant MessagingGroup List ManagementPresenceInteractive Se
17、rvicesTelephony servicesPTTVideo Telephony3rd party applicationscombination of all fixed and mobile servicesseamless service delivery to both wireline and wireless endpointsGSM/UMTS/CDMA/WiFiconvergencenew converged applications-One Number-multiple devices-VoIP VPN&IP Centrex with mobile extensions-
18、IM across fixed and mobileFixed Services,BB Access,WiFi AccessMobile Services,2G/3G AccessConverged Services,Converged Access,Converged NetworkIMS for Mobile-OnlyIMS ConvergedFixed/MobileSlide 6Lucent Technologies ProprietaryAgendaAgenda?向基于IMS为核心的NGN网络演进Evolution to IMS Based NGN?朗讯IMS体系结构Lucent IM
19、S Architecture?朗讯NGN/IMS的实现Lucent NGN/IMS Implementation?国际NGN/IMS的标准进展International NGN/IMS standards?朗讯IMS的核心与概要Key Takeaways?向基于向基于IMSIMS为核心的为核心的NGNNGN网络演进网络演进Evolution to IMS Based NGNEvolution to IMS Based NGN?朗讯朗讯IMSIMS体系结构体系结构Lucent IMS ArchitectureLucent IMS Architecture?朗讯朗讯NGN/IMSNGN/IMS的实
20、现的实现Lucent NGN/IMS ImplementationLucent NGN/IMS Implementation?国际国际NGN/IMSNGN/IMS的标准进展的标准进展International NGN/IMS standardsInternational NGN/IMS standards?朗讯朗讯IMSIMS的核心与概要的核心与概要Key TakeawaysKey TakeawaysSlide 7Lucent Technologies Proprietary3GPP/3GPP2 IMS3GPP/3GPP2 IMS架构下的融合网络结构架构下的融合网络结构架构下的融合网络结构架构
21、下的融合网络结构IP Core Network MultiIP Core Network Multi-media media Subsystem(IMS)Subsystem(IMS)Mc/30PSTN/26ISC/12Mr/24Mi/eeMRFCMRFPMp/25Cx/16UAMGCFMj/49Sh/7/11Mg/17Mb/34PDF?Go/28Mb/36/38Home Subscriber Server?AAADatabases4?For 3GPP,the PDF is within the P-CSCF.For 3GPP2,the PDF is a network entity of it
22、s own.?For 3GPP the HSS also contains HLR functionality which is not shown here.For 3GPP2 the AAA function shown in the HSS is a stand-alone entity.?Additional interfaces exist in both the 3GPP and 3GPP2 referencemodels but are not included in this proposal for harmonization.ControlBearerBlue=3GPP d
23、efinitionRed=3GPP2 definitionBlack=Common definitionGreen=Not CommonMb/32/37Packet DataPacket DataSubsystemSubsystemRadio AccessRadio AccessNetworkNetwork233Mb/33Mm/tbdMb/42PDNMGWPSTN/PLMNBGCFMk/5CSCFMw/dd/ffOSA-ASSIP-ASOSA-SCSOSAIP Core Network MultiIP Core Network Multi-media media Subsystem(IMS)S
24、ubsystem(IMS)Mc/30PSTN/26ISC/12Mr/24Mi/eeMRFCMRFPMp/25Cx/16UAUAMGCFMj/49Sh/7/11Mg/17Mb/34PDF?Go/28Mb/36/38Home Subscriber Server?AAADatabases4?For 3GPP,the PDF is within the P-CSCF.For 3GPP2,the PDF is a network entity of its own.?For 3GPP the HSS also contains HLR functionality which is not shown h
25、ere.For 3GPP2 the AAA function shown in the HSS is a stand-alone entity.?Additional interfaces exist in both the 3GPP and 3GPP2 referencemodels but are not included in this proposal for harmonization.ControlBearerBlue=3GPP definitionRed=3GPP2 definitionBlack=Common definitionGreen=Not CommonControlB
26、earerBlue=3GPP definitionRed=3GPP2 definitionBlack=Common definitionGreen=Not CommonMb/32/37Packet DataPacket DataSubsystemSubsystemRadio AccessRadio AccessNetworkNetwork233Mb/33Mm/tbdMb/42PDNPDNMGWPSTN/PLMNPSTN/PLMNBGCFMk/5CSCFMw/dd/ffOSA-ASSIP-ASOSA-SCSOSASlide 8Lucent Technologies ProprietaryDNS,
27、ENUM,DHCPDNS,ENUM,DHCPChargingChargingCCF,SCF,&ECFHSSHSSSDHLRSDHLRVital QIP Vital QIP SurePaySurePayNetwork Resources Network Resources EMF Based EMF Based OMCsOMCsSupport SystemsSupport SystemsBilling Mediation,Fault Correlation,Operations,Maintenance,在在在在3 3GPP/3GPP2 IMSGPP/3GPP2 IMS架构下的朗讯下一代网络架构架
28、构下的朗讯下一代网络架构架构下的朗讯下一代网络架构架构下的朗讯下一代网络架构Web PortalWeb PortalParlayParlayApplicationApplicationSIP SIP ApplicationApplicationParlay Gateway(OSA SCS)Parlay Gateway(OSA SCS)Application LayerWebWebServicesServicesAccessAccessNetworkNetworkPDFPDFSIP EndpointsSIPLegacy IP EndpointsH.323 and MGCPService Brok
29、er(SCIM)Service Broker(SCIM)Media and End PointLayerSession ControlLayerMediaMediaServerServerMRFCMRFCS S-CSCFCSCFBGCFBGCFSession Border ControllerSession Border ControllerI I-CSCFCSCFP P-CSCFCSCFManagedManagedCore NetworkCore NetworkIP SignallingIP SignallingConverterConverterAnalogEndpointPSTNPSTN
30、SS7SS7MediaMediaGatewayGatewayMGCFMGCFMGCMGCSGSGIN AccessIN AccessTDM PBXWirelessMSCPOTS/ISDNAnyMediaAnyMediaIP LAGIP LAGSlide 9Lucent Technologies ProprietaryIMS SessionIMS Sessionand Resourceand ResourceControlControl朗讯朗讯IMSIMS体系结构体系结构 会话与资源管理会话与资源管理Session and Resource ControlSession and Resource
31、 ControlAccess NetworkAccess NetworkTrustedApplicationServersSIPTrustedGatewayI I-CSCFCSCFLucentLucentEnhanced Enhanced Service BrokerService BrokerMRFCMRFCMediaMediaServerServerS S-CSCFCSCFManagedManagedCore NetworkCore NetworkP P-CSCFCSCFPDFPDFSessionSessionBorderBorderControllerControllerBGCFBGCF
32、“Walled Garden”control of sessions“Walled GardenWalled Garden”control of sessionscontrol of sessionsSession Control Provides walled access to applications Hides endpoint idiosyncrasies from applications Session control(CSCFs)functionally follows Internet paradigms P-CSCF?I-CSCF?S-CSCF Stateless enti
33、ties at network edge,stateful entities in core Simple processing at edge,complex processing in core Breakout Gateway Control Function Selects network to use for PSTN interworking Centralized Media Resource Control Provides efficient scalable infrastructure Leverage investments across applications an
34、d market segments Lucent Enhanced Service Broker Application Interaction Management Serial and parallel application invocation Static and dynamic rules Context-aware and subscriber preference-driven x-enables combined services(x is presence,policy,etc.)Experience Management Maintains session level i
35、nfo,#and type of active links Reliable,persistent,centralized control Active,inactive,and mulit-session awareness and control Policy Decision Function Authorizes QoS requests Session Border Controller(SBC)Edge router providing security,IP Services,QoS,&bearer controlSession Control Provides walled a
36、ccess to applications Hides endpoint idiosyncrasies from applications Session control(CSCFs)functionally follows Internet paradigms P-CSCF?I-CSCF?S-CSCF Stateless entities at network edge,stateful entities in core Simple processing at edge,complex processing in core Breakout Gateway Control Function
37、 Selects network to use for PSTN interworking Centralized Media Resource Control Provides efficient scalable infrastructure Leverage investments across applications and market segments Lucent Enhanced Service Broker Application Interaction Management Serial and parallel application invocation Static
38、 and dynamic rules Context-aware and subscriber preference-driven x-enables combined services(x is presence,policy,etc.)Experience Management Maintains session level info,#and type of active links Reliable,persistent,centralized control Active,inactive,and mulit-session awareness and control Policy
39、Decision Function Authorizes QoS requests Session Border Controller(SBC)Edge router providing security,IP Services,QoS,&bearer controlMediaMediaServerServerMediaMediaServerServerSlide 10Lucent Technologies Proprietary Independent Application Layer Independent applications Interactions managed by ses
40、sion layer Fast deployment of enhanced services to differentiate and compete Application Servers Provides feature logic include:Telephony,IP Centrex,Push-to-talk,Instant Messaging,etc.,from Lucent or 3rdparty SIP Applications servers Standards based SIP interface Open freeform development model Parl
41、ay Gateway Open Service Access(OSA)Service Capability Server(SCS)&OSA AS Provides for secure 3rdparty apps Provides abstracted view of network Formalized development framework Parlay and Web Service Applications Owned by carrier or enterprise Lucent Web Portal Provides web control of services Indepe
42、ndent Application Layer Independent applications Interactions managed by session layer Fast deployment of enhanced services to differentiate and compete Application Servers Provides feature logic include:Telephony,IP Centrex,Push-to-talk,Instant Messaging,etc.,from Lucent or 3rdparty SIP Application
43、s servers Standards based SIP interface Open freeform development model Parlay Gateway Open Service Access(OSA)Service Capability Server(SCS)&OSA AS Provides for secure 3rdparty apps Provides abstracted view of network Formalized development framework Parlay and Web Service Applications Owned by car
44、rier or enterprise Lucent Web Portal Provides web control of servicesSession ControlSIP3rdPartyApplicationsService Provider ApplicationsService Provider ApplicationsParlay Parlay AppAppLucentLucentWeb PortalWeb PortalParlay Parlay AppAppParlay GWParlay GWSIP AppSIP AppWeb Web ServiceServiceWeb Web S
45、erviceService朗讯朗讯IMSIMS体系结构体系结构 业务应用业务应用ApplicationApplicationSlide 11Lucent Technologies ProprietaryService Point Triggers(SPTs)-Points at which application can gain controlAny initial SIP Method,e.g.,INVITE,REGISTER,SUBSCRIBE,MESSAGE,Content,presence,or absence of any headerDirection of the reques
46、t with respect to the served user(Originating or Terminating)Session description information(i.e.SDP)Initial Filter Criteria(iFC)-XML based definition of application interaction1 or more SPT(s)linked with logical expressions(e.g.AND,OR,NOT,etc)Address of AS to be contactedPriority of initial filter
47、criteriaDefault handling when AS cannot be reachedS-CSCF uses iFC to involve applicationsProcesses iFCs serially based on priorityApplication can decide to continue or disengage in subsequent messagingRecord-Route/Route inclusionXMLsFCSIPIncomingMessagesFilter CriteriaFilter CriteriaOriginating or T
48、erminating FiltersOriginating or Terminating FiltersInitial Filter Criteria(iFC)Download atRegistrationSIPOutgoingMessagesSPTSPTFApplicationApplicationServerServerApplicationApplicationServerServerApplicationApplicationServerServerFFS-CSCFSIPSIPSIPXMLiFCSubsequent Filter Criteria(sFC)Dynamic updateR
49、outingRoutingHSSHSS朗讯朗讯IMSIMS体系结构体系结构 IMSIMS的业务模型的业务模型IMS Services ModelIMS Services ModelSlide 12Lucent Technologies ProprietaryCentralized support systemsConsolidate common informationStandards based interfacesEases managing and provisioning of new solutionsHome Subscriber Server(HSS)or HSS Collec
50、tiveCentralized DB in IMS for user profilesSDHLRFilter criteria(sent to S-CSCF)Authentication Center for SecurityLogically viewed as a single entity,can be several physical databasesCentralized ChargingSupport for session(off-line),real-time(on-line),and event driven chargingDNS,ENUM,and DHCP Suppor