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IP MultiMedia Subsystem (IMS) New Service Possibilities Alain Bouvier [email protected] CDG International Roaming Team Meeting Kauai, December 13-14, 2004 EMC/QX/R-04:063 Uen Rev A 2004-12-13 1 CDG IR Team Covering… IMS Overview; IMS Interworking & Roaming; Ericsson IMS offering. EMC/QX/R-04:063 Uen Rev A 2004-12-13 2 CDG IR Team Main IMS Standardization groups 3GPP TSG SA WG2 (Architecture); 3GPP TSG SA WG1 (Services); 3GPP2 TSG-X WG 3.2 - MultiMedia Domain (MMD); 3GPP2 TSG-X WG 3.4 - MultiMedia Services (MMS). EMC/QX/R-04:063 Uen Rev A 2004-12-13 3 CDG IR Team Third Party Statement On IMS “In the next 18 months, carriers will implement IMS platforms largely for specific applications, creating beachheads for its market penetration. Beyond that, IMS will become a standard service environment for wireless operators and for creating converged mobile and fixed services.” (Source: Yankee group March 22, 2004) EMC/QX/R-04:063 Uen Rev A 2004-12-13 4 CDG IR Team IMS Momentum The OMA (Open Mobile Alliance) “IMSinOMA” Requirements Document (RD) provides a single general use case which rationalizes IMS as the only globally standardized SIP-based architecture (to date) that addresses the needs of mobile operators in terms of session management, security, mobility, QoS and charging. “OMA service enablers shall make use of capabilities provided by the 3GPP and 3GPP2 IP Multimedia Subsystem (IMS) when IMS is used”; The ETSI TISPAN Group (Telecoms & Internet converged Services & Protocols for Advanced Networks) NGN (Next Generation fixed Network) will use the 3GPP IMS technology. EMC/QX/R-04:063 Uen Rev A 2004-12-13 5 CDG IR Team IMS Overview IMS is an framework for enabling advanced IP services & applications on top of packet bearer; Support System Applications; Service Enablers: Group Mgmt; Conferencing; Messaging; Presence; Service Execution Environment Etc. Application Layer AS AS Management Provisioning IMS supports new IP based MM services and interoperability with traditional telephone services; HSS S-CSCF P-CSCF I-CSCF SBG IP Network Charging MRFC MGCF SGW Number Mapping CS Network MMGW IMS is “access aware” & “access independent”: WCDMA, GSM, CDMA2000, wireline, WLAN, etc. EMC/QX/R-04:063 Uen Rev A Common System IMS clients 2004-12-13 AS : CSCF : HSS : MRF : SBG: MGCF: MMGW: SGW: 7 MRFP MRFP Interworking Application Server - Application logic Call Session Control Function - Session control and signaling Home Subscriber Server - Maintains the home subscriber profile Media Resource Function - Media stream manipulation Session Border Gateway Media Gateway Control Function MultiMedia GateWay Signaling Gateway CDG IR Team IMS Overview (cont…) Service Enablers and Core Elements dynamically work together to create new Multimedia services; Elements are reused in different combinations. Messaging Registration Authentication Conferencing Policy handling Presence Service invocation Location Charging Media distribution Group management Service Enablers EMC/QX/R-04:063 Uen Rev A Service Core Elements 2004-12-13 8 CDG IR Team IMS Main Benefits Naturally enables convergence of internet and telecommunication services; IMS introduces common functions and enablers that can be reused (i.e. horizontal functions such as charging, provisioning and presence can be re-used for additional services launched); IMS is an architecture that supports many operator’s requirements of the Data Services business model (e.g. provides Network Control when required, i.e. provide control or push it to the client if it makes more sense). EMC/QX/R-04:063 Uen Rev A 2004-12-13 9 CDG IR Team Next Generation Network (NGN) Requirements • …Interworking & World Wide Roaming…; (Source: CDG FGWN Group) “IMS Interworking means that two different IMS networks are connected through Inter-PLMN IP network to enable SIP control and transport of user plane” “IMS Roaming means that VPLMN packet network resources are used in order to connect to the IMS core network, which resides in HPLMN (short term case) or VPLMN” (Source: GSMA IR.65 – “IMS Roaming & Interworking Guidelines”) EMC/QX/R-04:063 Uen Rev A 2004-12-13 10 CDG IR Team IMS Interworking GRX is preferred for: MMS/IMS Interworking Server Server Server Server CRX/GRX ? S-CSCF P-CSCF S-CSCF I-CSCF I-CSCF P-CSCF Internet ? Other ? HA GGSN PDSN Access Network UE CDMA2000 EMC/QX/R-04:063 Uen Rev A SGSN PDSN : HA : SGSN : GGSN : GRX : CRX : Packet Data Serving Node Home Agent Serving GPRS Support Node Gateway GPRS Support Node GPRS Roaming Exchange CDMA Roaming Exchange 2004-12-13 11 Access Network UE GPRS/UMTS CDG IR Team IMS Roaming – PCSCF in HPLMN IMS roamers connect to the HPLMN through Mobile IP (MIP) giving full service control to the HPLMN; The visited network does not have to have an IMS domain. Home Network HSS IMS Home Network S-CSCF HA P-CSCF CRX PDSN UE Visited Network EMC/QX/R-04:063 Uen Rev A IMS Visited Network 2004-12-13 12 CDG IR Team IMS Roaming – PCSCF in VPLMN IMS control shared between home and visited network; Offers benefits like improved QoS and security. The VPLMN is not a bit pipe. Home Network HSS IMS Home Network S-CSCF I-CSCF CRX PDSN UE EMC/QX/R-04:063 Uen Rev A P-CSCF IMS Visited Network Visited Network 2004-12-13 13 CDG IR Team Ericsson IMS Offerings Ericsson Instant Talk Compliant with the only available multi-vendor specification (PoC) Commercial Offerings Engine Multimedia Wireline VoIP, IPCentrex, other MM services EIT IP Multimedia System EMM IMS infrastructure including SIP reachability, presence, GLMS, ISC, etc. weShare weShare SDS A family of Combinational Services combining the CS and PS domain Trial Offerings Service Development Studio Development tool for new applications IPMM Services offering for IPMM Advisory services Managed services Integration services EMC/QX/R-04:063 Uen Rev A 2004-12-13 16 Available Now CDG IR Team Ericsson Instant Talk (EIT) Instant Talk Application Server Ericsson’s implementation of Push-to-Talk over Cellular (PoC); Based on IPMM (i.e. Ericsson’s implementation of IMS/MMD); IP Multi Media IPMM Contact list integrated with phones; User Features Example: EIT Client Signaling Open/closed chat user groups Add users to an on-going session Group management from handset Pre-defined and add-hoc groups Subscribe to each others presence Do not Disturb (DnD) Floor control EMC/QX/R-04:063 Uen Rev A Media 2004-12-13 18 CSCF - Call Session Control Function HSS - Home Subscriber Server MRF - Media Resource Function CDG IR Team weShare – an Evolution Path to Mobile MM Mode 1 “Verbal protocol” 1. Create/find content. 2. Send it. 3. Call and ask to retrieve. 4. Wait. 5. Talk about it. MMS email Mode 2 “Communicate & Share” Mode 3 “Communicate, Share & Interact” 1. Call. 2. Create/find content. 3. Send it while talking. 4. Talk about it. 1. Call. 2. Create/find content. 3. Add it while talking. 4. Talk about it, interact with it, point to it, manipulate it… Directions on a map Shared Browsing Whiteboard WS-Image WS-Motion Perceived “real-time”-ness EMC/QX/R-04:063 Uen Rev A 2004-12-13 19 CDG IR Team Conclusion IMS is getting momentum as the architecture of choice for the introduction of Mobile & Fix Multimedia Services; Regulatory bodies in Europe are encouraging the industry to address the Interworking and Roaming issues in order to avoid the fragmentation of IMS services; The GSMA organization has introduced the “IMS Roaming & Interworking Guidelines” document and recommends using GRX networks for Interworking/Roaming; Combinational Services enables the combination of realtime CS voice with near-real-time Packet Data services to enrich the end-user’s experience. EMC/QX/R-04:063 Uen Rev A 2004-12-13 20 CDG IR Team TAKING YOU FORWARD EMC/QX/R-04:063 Uen Rev A ? QUESTIONS ? ? 2004-12-13 21 CDG IR Team