3GPP IMS Introduction.pptVIP

3GPP IMS Introduction David Lee 2006.06.20 Outline What is IMS? Why IMS was developed? Where did IMS come from? IMS Architecture. IMS Entities and Functions. IMS Reference Points. General Procedures Protocols Example Services What is IMS? Layered, Access Independent, multimedia services delivering IP Core Network. Convergence Fixed and Mobile Convergence (FMC); Manageable Service control; Media resources control policy; Subscriber profile management; Mobility management; Operable Service QoS ensuring Charging plan Secure communication Services creation Why IMS was developed? To provide mobile and IP-based telecommunication and multimedia services Manageable Operable To provide peer-to-peer communications Real-time Non-real-time To enable combination of various applications and services One network, multiple services. Where did IMS come from? IMS Layered Model IMS Architecture IMS Entities and Functions IMS Reference Points General Procedures Protocols * * Release 99 Release 4 Release 5 Release 6 Release 7 1999 2000 2002 GSM WCDMA OSA All-IP IMS 2004 2006 Management Provisioning Charging Number Mapping MGW SG/MGCF CSCF MRF HSS SIP, IP Control Layer AS AS SIP / OSA / CAMEL Application Layer IP/MPLS PSTN/PLMN GERAN, UTRAN, WLAN, xDSL,... Connectivity Access Layer MGCF HSS Cx UE Gm CSCF IMS-MGW Mn Mg MRFC Mr MRFP Mp CSCF Mw BGCF Mj BGCF Mk SLF Dx IPv6 Network Services Mb ISC SIP AS / OSA SCS Sh Ut CAMEL IM-SSF Si Dh Mi AS PDF Ut Gq PDF Go SIP Diameter Megaco/H.248 Mobile Application Part IP Multimedia Network Mm HTTP COPS