LTE – the Future of IMS


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The world is going wireless. For many years we have been discussing mobile broadband and always-on services and applications. This is maturing to reality with new devices in different shapes and forms such as mobile devices, tablets and netbooks. The introduction of LTE (Long Term Evolution) is the technology behind the compelling user experience required for their success. New industry initiatives such as VoLTE and VoLGA are allowing for real-time multimedia communication yet there are many challenges for realizing this technology.

The webinar will discuss the future of voice and SMS services, supplementary and Advanced Services in the era of all IP mobile networks, network architecture issues and interconnectivity with Legacy and current 2G and 3G access.

Deployment challenges and migration solutions will be covered as well as LTE network elements with the underlying standard IP Multimedia Subsystem (IMS) network infrastructure and endpoint devices. Speakers will discuss the development tools required, from the basic building blocks of IMS protocol stacks to the intricate details of application deployment. IMS standardization and interoperability efforts to overcome growing complexities of this new network architecture will be discussed as well.

By attending this webinar, you will learn:
• LTE and IMS market and technology trends
• Challenges in building Next Generation core and endpoint devices
• Unique requirements for Voice over LTE
• RADVISION solutions for LTE networks

Who should attend:
• Developers, architects
• Product Managers
• CTOs, VP R&D
• Marketing executives

Segments – Core Network Devices, SBCs, Media Gateways, Media Servers, Terminal End Points, and any other device that can connect to NGN/IMS Networks

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LTE – the Future of IMS

  1. 1. LTE – the Future of IMS<br />May 26th, 2010<br />Sagi Subocki<br />Products Manager,<br />Head of IMS Segment<br />RADVISION<br /><br />Anatoli Levine<br />President, IMTC<br />Director of Product <br />Management – Americas<br />RADVISION<br /><br />Carl Ford<br />Community Developer, 4GWE<br />Crossfire Media <br /><br />1<br />
  2. 2. Agenda<br />Introduction to LTE<br />VoLTE and IMTC<br />IMS overview<br />IMS Development challenges<br />RADVISION IMS Developer Suite<br />2<br />
  3. 3. LTE - Introduction<br />LTE (Long Term Evolution) – foundation of 4G (4th Generation) <br />All IP infrastructure and greater air interface bandwidth to the mobile handset.<br />Was developed as an enhancement to the existing 3G UMTS <br />New Air interface based on OFDMA for downlink and SC-FDMA in the uplink.<br />Efficiently supports multi-antenna technologies (MIMO). <br />High bandwidth—up to 20 MHz. Scalable, LTE can operate in the existing 5-MHz UMTS frequency bands, or in even smaller bands. <br />3<br />
  4. 4. LTE<br />LTE is an all-IP mobile network<br />No support for ‘traditional’ CS domain voice<br />New Voice and SMS solutions required<br />
  5. 5. The future of operators<br />Top 25 LTE Operators Will Reach Over 200 million LTE Subscribers by 2015 <br />CAPEX spending to reach $14 billion in 2015<br /> - Maravedis research <br />
  6. 6. Operators today face real challenges<br />Future of  voice service usage:<br />migration of customers towards mobile<br />VoIP solutions over their data networks<br />The App Store:<br />services that run on the network are<br /> not controlled by the network operator.<br />LTE:<br />All about IP connectivity. Need a solution for<br />traditional voice and SMS services.<br />Significantly improves the network's quality – operators are becoming "dumb" data pipes<br />Operators need to be able to provide new services and stay relevant!<br />
  7. 7. The Solution - IMS<br />The enabler for operators to continue to be the service provider of the standard telephony services, as well as advanced services, over the all IP LTE access networks.<br />IMS will finally materialize and deliver on its promise - the operators simply have no other choice.<br />
  8. 8. What is Voice over LTE?<br />IMS profile<br />Started as “One Voice”<br />Initiative of 18 operators and handset vendors<br />GSMA adopted it<br />Work continues on the initial “One Voice” draft<br />Renamed to “VoLTE”<br />IMTC IMS Activity Group was selected by “OneVoice” initiative to develop VoLTE test specification.<br />8<br />
  9. 9. VoLTE - Introduction<br />9<br />VoLTE profile defines a minimum mandatory set of features in order to guarantee an interoperable, high quality IMS-based telephony service over LTE access networks<br />Voice and SMS in first stage - fast to fight new options for mobile VoIP<br />“smart pipe” vs “dumb pipe”<br />
  10. 10. VoLTE<br />Operators supporting VoLTE<br />3 Group<br />AT&T<br />Bell Canada<br />China Mobile<br />Deutsche Telekom/T-Mobile<br />KDDI<br />mobilkomaustria<br />MTS<br />NTT DoCoMo<br />Orange<br />SKT<br />SoftBank<br />Telecom Italia<br />Telecom New Zealand<br />Telefónica<br />Telenor<br />TeliaSonera<br />Verizon Wireless<br />Vodafone<br />10<br />
  11. 11. VoLTE<br />Handset manufacturers and equipment vendors supporting VoLTE<br /> Acme Packet<br />Alcatel-Lucent<br />Aylus, Camiant<br />Cisco<br />Colibra<br />Communigate<br />Comneon, Ericsson<br />Fujitsu<br />Genband<br />Huawei<br />LG<br />Motorola<br />Movial<br />Mu<br />NEC<br />Nokia<br />Nokia Siemens Networks<br />Qualcomm<br />RADVISION<br />Samsung<br />Sony Ericsson<br />Tekelec<br />11<br />
  12. 12. VoLTE – Planned Activities<br />GSMA<br />Formal specification in June<br />IMTC<br />Formal test cases document in June<br />2-3 more IOT events in 2010<br />Next IOT event planned for June<br />12<br />
  13. 13. About IMTC<br />Who we are: market leaders in unified communication and multimedia content delivery fields working together to create interoperable, standard based products in a Non-profit Organization<br />Major work areas:<br />SIP Parity (Video-conferencing in SIP)<br />Telepresence<br />IMS<br />PSS (packet switch streaming)<br />3G-324M ( mobile video conferencing)<br />Historical Archive<br />Major activity: Development of testing plans and conducting Interoperability testing<br />
  14. 14. About IMS Activity Group<br />Focus on Interoperability of IMS devices and technologies<br />Developed test plans and conducted testing for Video Share, CSI, MTSI<br />Was selected by VoLTE group of companies to develop VoLTE testing plan – ongoing process right now<br />Conducted first IOT in January 2010<br />Group members include Alcatel-Lucent, AT&T, Ericson, France Telecom, Nokia, NSN, RADVISION, Samsung, Sony-Ericson, ST-Ericson<br />
  15. 15. How Will Networks Migrate to LTE?<br />Networks will not switch overnight from GSM and 3G to LTE. <br />Operators will need to provide service continuity – <br />Switch between CS networks as well as IP based networks.<br />VCC = Voice Call Continuity<br />SMS<br />routed from circuit based networks into the packet based one<br />Need to integrate new technologies to stay relevant<br />Operators making the move with different approaches:<br />Telefonica and BT acquisitions of Jajah and Ribbit respectively. <br />Verizon - Skype to provide VoIP services<br />AT&T - huge amounts of data with exclusivity of iPhone<br />SKT, CSL, AT&T and others experimenting with IMS video sharing<br />
  16. 16. Audience Poll<br />When do you think the major mobile service providers will provide voice and messaging services over their LTE Networks?<br /><ul><li>With the Launch of their LTE Network
  17. 17. 1 Year after the Launch of their LTE Network
  18. 18. 2 Years after the Launch of their LTE Network
  19. 19. The LTE Networks will never be used for Voice and Messaging Services</li></ul>16<br />
  20. 20. IMS - Introduction<br />IP Multimedia Subsystem <br />Designed to provide flexible multimedia services anytime and everywhere<br />Part of the core network, with interfaces to other subsystems in the network<br />A group of technical specifications being standardized by the 3GPP/3GPP2/TISPAN/Packet Cable and others<br />17<br />
  21. 21. What else is IMS?<br />An architecture for IP based next generation service and call control<br />Layered, functional architecture<br />Open application development framework<br />Common authentication, authorization and accounting framework<br />Common media control and network management functions<br />Can easily serve roaming subscribers<br />An architecture that will be used in all networks<br />Cellular<br />Fixed carrier networks<br />WiMax networks<br />Packet Cable networks<br />LTE<br />18<br />
  22. 22. IMS is happening now!<br />By 2011 80% of service provider will run voice over IMS (Infonetics).<br />Common IMS – Adopted by Cellular (3GPP/3GPP2), LTE, Fixed Line (TISPAN), Cable (PacketCable 2.0), and WiMAX<br />A wide basic set of IMS standards which are identical to all networks.<br />Each access network has its own unique "flavor" added on top of it.<br />19<br />
  23. 23. IMS Development Challenges – The N+1 Rule<br />Testing<br />Reliability<br />Client<br />Video Services<br />Standardization<br />Capacity<br />Architecture<br />Interfaces<br />IMS Protocols<br />20<br />
  24. 24. IMS Architecture – Well-defined Modularity & Interfaces<br />Application<br />(SIP, OSA Parlay, CAMEL)<br />AS<br />HSS<br />OSA SCS<br />IM SSF<br />‘IMS Data’<br /> SIP AS <br />SLF<br />HLR/AuC (‘CS/PS’)<br />Service/Applications Layer<br />CSCF<br />IMS Session Signaling<br />BGCF<br />IMS Layer<br />IMS User Plane Data<br />I-CSCF<br />S-CSCF<br />MGCF<br />P-CSCF<br />SGW <br />NASS<br />SPDF/ A-RACF<br />MRF<br />IMS GW<br />ALG<br />ALG<br />MRFC<br />CS Networks<br />(PSTN, CS PLMN)<br />PDF<br />DSLAM<br />BAS<br />UE<br />IMS-MGW<br />MRFP<br />TrGW<br />TrGW<br />3GPP R7 / TISPAN R1…<br />IPv4 PDN<br />(IPv4 Network)<br />WLAN WAG<br />WLAN PDG<br />UE<br />BB<br />)IPv4/IPv6(<br />3GPP R6<br />BG<br />GGSN <br />PEF<br />IPv6 PDN<br />(IPv6 Network)<br />RAN<br />SGSN<br />UE<br />Transport Layer<br />3GPP R5<br />21<br />
  25. 25. Key to IMS Application Success<br />Compliancy to the standards<br />Ensures interoperability<br />Easy deployment<br />“Worry-free” roaming<br />Smooth evolution to IMS SIP<br />Ability to add new IMS Services<br />22<br />
  26. 26. IMS Compliancy Challenges<br />23<br />Many new network entities<br />Many new protocol requirements<br />Different access networks each behaving differently – Cellular, Wireless, Fixed Line, Cable, LTE, WiMAX<br />New standards that are constantly added upon and revised<br />
  27. 27. New Services in Release 9<br />Public Warning System,<br />Earthquake and Tsunami<br /> Warning System (ETWS)<br />Service Specific Access Control<br /> VOIP (IMS) upgrades to various services<br /> Machine to Machine Network Improvements<br />24<br />
  28. 28. New Deployment & Migration Scenarios in Release 9<br />Circuit Switched to VOIP, Service continuity improvements<br />3GPP/Non-3GPP accesses -> LTE<br />LTE HNB (Femtocells)<br />25<br />
  29. 29. Audience Poll<br />What challenges are you facing with building IMS platforms?<br /><ul><li> Following the evolving IMS standard requirements
  30. 30. Compliancy to new standard protocol requirements
  31. 31. Achieving Telco grade IMS equipment reliability and capacity
  32. 32. More than one of the above</li></ul>26<br />
  33. 33. IMS Express™ - RADVISION’s IMS Developer Suite<br />RADVISION is a proven market leader in the Voice and Video over IP and 3G protocol markets<br />Involved in SDO and IOT<br />RADVISION provides “future-proof solutions” and a clear standard based roadmap<br />RADVISION’s IMS Express™<br />Comprehensive IMS/NGN product line<br />Full IMS compliancy - 3GPP, TISPAN, PacketCable 2.0, LTE, WiMAX<br />RADVISION provides all the tools developers need to easily and cost-effectively meet the IMS/NGN challenge<br />Fully pre-integrated and tested with all Wind River Operating Systems.<br />27<br />
  34. 34. IMS Express™ Components<br />IMS/NGN Protocol Toolkits<br />SIP Developer Suite<br /><ul><li>IMS SIP Toolkit
  35. 35. MSRP Toolkit
  36. 36. XDM Toolkit
  37. 37. ICE/STUN/TURN NAT Traversal Toolkit</li></ul>IMS DIAMETER Toolkit<br />IMS MEGACO/H.248 Toolkit<br />IMS Advanced-RTP/RTCP Toolkit<br />IMS Server Platform<br />IMS Client Suite<br />ProLab™ IMS Testing Solution<br />IMS Server Platform<br />IMS Client Suite<br />ProLabTM IMS Test Solution<br />IMS Advanced RTP/RTCPToolkit<br />IMS<br />MEGACO/H.248 Toolkit<br />IMS SIPToolkit<br />IMS DIAMETERToolkit<br />28<br />
  38. 38. RADVISION IMS Protocol Toolkits<br />Powerful and highly versatile set of tools to facilitate development of IMS/NGN applications <br />Reduces development time and costs<br />Toolkits highlights:<br />Source Code<br />Multilayered APIs<br />Extensive choice of quick start sample applications that enable full user control and flexibility<br />GUI test applications<br />29<br />
  39. 39. IMS<br />Add-On<br />XML<br />Schema Package<br />MSAdd-on(CSTA)<br />SIP Toolkit<br />XDM<br />Toolkit<br />MSRP<br /> Toolkit<br />RTP<br />Stack<br />SDP<br />Stack<br />SCTP<br />Add-On<br />SigComp<br />Add-On<br />NAT T. Toolkits<br />IPSec<br /> Add-on<br />ICE<br />STUN<br />ICE<br />STUN<br /> RADVISION IMSSIP Developer Suite<br />Presence &<br />IM Add-on<br />TURN<br />Add-Ons <br />Basic SIP TK<br />Toolkits<br />30<br />
  40. 40. IMS LTE Package<br />IMS<br />Add-On<br />IMS &<br />Media<br />Add-On<br />SIP Toolkit<br />Advanced<br />RTP<br />Toolkit<br />SDP<br />Stack<br />SigComp<br />Add-On<br />IPSec<br /> Add-on<br />
  41. 41. NGN/IMS features – partial list<br />IMS LTE Package<br />SigComp (RFC 3320, RFC 4896,RFC 5049. . )<br />AKA-MD5 (RFC 3310)<br />IKE<br />Security agreement (RFC 3329)<br />IPsec Transport Level and Tunnel mode<br />Media authorization (RFC 3313)<br />P-headers <br />Service-route mechanism (RFC 3608)<br />Reg-event package (RFC 3680)<br />IPv6<br />Resource Priority Header (RFC 4412)<br />Extension of reason – RFC (4411)<br />GRUU<br />Preconditions (RFC 4032)<br />IMS resource reservation (RFC 3312)<br />Path header (RFC 3327)<br />SIP outbound<br />ENUM<br />SDP extensions<br />RTCP – Extended Reports<br />RTCP – Feed Back<br />P-preferred-identity<br />P-access-network-info<br />P-asserted-identity<br />P-called-party-id<br />P-charging-vector<br />P-visited-network-id<br />P-associated-uri<br />P-profile-key<br />P-answer-state<br />More . .<br />Other IMS capabilities supported by additional modules: <br /> SIMPLE (Presence & IM)<br />SCTP Transport layer<br /> STUN, TURN & ICE<br />
  42. 42. Presence-based Services<br />Presence – IETF/OMA SIMPLE (SIMPLE Add-On)<br />Client side Presence Information Data Format + logic<br />Process WINFO events template messages<br />Use PUBLISH method to spread new client state<br />Configuration for Contact lists, Preferences, Privacy, Security – OMA XDM (XDM Toolkit)<br />XDM- XML Document Management<br />Common mechanism that makes user-specific service-related information accessible to the service enablers (e.g., PoC, IM)<br />Instant Messaging, File and Image Transfer – IETF MSRP (MSRP Toolkit)<br />MSRP - Message Session Relay Protocol<br />Protocol for point to point messaging and file transfer. Handling of messages as media<br />33<br />
  43. 43. Applications of Presence-based Services<br />SIP Networks<br />IMS/NGN Networks<br />Mobile phones/PDA<br />PC and embedded voice/video/chat clients<br />Set-top boxes and IPTV clients<br />Video-share applications<br />Interactive TV<br />Gaming applications and appliances<br />Collaboration solutions<br />IP PBX<br />IMS Rich Communication Suite (RCS)<br />
  44. 44. Service Example: IMS RCS (Rich Communication Suite)<br />RCS – Initiative by GSMA<br />RCS goal: facilitate services such as instant messages, buddy lists and video sharing among users and devices across different networks. <br />Main elements of RCS:<br />Enhanced Phonebook - service capabilities; presence enhanced <br />Enhanced Messaging – large messaging options including chat and messaging history <br />Enriched Call – multimedia content sharing during a voice call<br />
  45. 45. Service Network Architecture<br />
  46. 46. Audience Poll<br />What IMS Services are you aiming to develop?<br /><ul><li>Voice
  47. 47. Messaging
  48. 48. Video
  49. 49. Presence based Services and IM
  50. 50. More than one of the above</li></ul>37<br />
  51. 51. IMS SIP Server Platform<br />A flexible framework for developing high performance SIP Network Elements and Application Servers <br />B2B Application Creation Framework for development of SIP and IMS Applications and Services<br />Proxy/registrar, IMS Presence and Accounting engines<br />For rapid development of<br /><ul><li>X-CSCF
  52. 52. BGCF
  53. 53. PBX
  54. 54. Billing
  55. 55. and more …</li></ul>38<br />38<br />
  56. 56. RADVISION IMS Client Developer Suite<br />A complete package of IMS client side building blocks <br />Small footprint, modular and extendable<br />High level APIs hide IMS and SIP complexity<br />39<br />
  57. 57. ProLab™ IMS Testing Solution<br />RADVISION ProLab™ IMS Testing Solution allows testing of:<br />IMS vendor equipment<br />IMS Servers <br />Added value <br />Part of ProLab Test Management Suite <br />Multi-protocol testing (SIP, IMS, 3G-324M, H.323) <br />Testing solutions<br />IMS traffic emulation <br />Protocol analysis <br />Script capability <br />Media analysis & quality measurement <br />System Under Test<br />ProLab<br />IMS Server Agent <br />ProLab<br /> IMS Test Agent <br />40<br />
  58. 58. Thank you!<br />Sagi Subocki<br />Products Manager,<br />Head of IMS Segment<br />RADVISION<br /><br />Anatoli Levine<br />President, IMTC<br />Director of Product <br />Management – Americas<br />RADVISION<br /><br />Carl Ford<br />Community Developer, 4GWE<br />Crossfire Media <br /><br />