The LTE Service Layer


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Discover how LTE networks enable rich and new converged services including VoLTE, MBMS, RCS, Video Apps, and M2M. These multi-media services will migrate as IMS evolves from 3G to 4G/LTE.

Presented by: Nitin Tomar - Sr. Product Line Manager, Adnan Salem - Chief Architect, Debjani De - Sr. Architect

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The LTE Service Layer

  1. 1. Welcome! Real Implementation Challenges of LTE Network Equipment: April 12 Exploring the Trade-offs and Deploying LTE Small Cells: Interference Solutions Mitigation Solutions May 17 Building EPC Systems June 14 The LTE Service Layer July 12 End-to-end QoS in LTE To register for the remaining webinars: Radisys Corporation Confidential 1
  2. 2. LTE Service LayerFrom VoLTE and Video to Multimedia and M2M Speakers: Nitin Tomar – Sr. Product Line Manager Adnan Saleem – Chief Architect Debjani De – Sr. Architect June 14, 2012 Radisys Corporation Confidential 2
  3. 3. Today’s Agenda Market Dynamics Evolution of Services from 2G, 3G to LTE / IMS LTE Killer Apps – VoLTE, Video LTE Services and System Aspects Conclusion Q&A / Wrap-up Radisys Corporation Confidential 3
  4. 4. End-to-End LTE Infrastructure From Radio Access to Media ProcessingRadio Access Network Evolved Packet Core Policy Control IMS IP Policy & User Mobility Multimedia Equipment Charging Management Subsystem Routing Home eNodeB Entity Function Application Media Server Resource Function User Policy & Equipment Charging Internet Enforcement Function eNodeB LTE Security Serving Packet Gateway Gateway Gateway  Macro  Small Cells  10G  40G ATCA  Dumb  Smart Pipes  Audio  Video Conf  60+ Customer Wins ~40% ATCA Market Share  Traffic Management  ~65% Market Share Radisys Corporation Confidential 4
  5. 5. LTE ServicesWhere is the Monetization? GSA confirms LTE is the fastest  327 operators investing in LTE in 99 countries developing mobile technology  267 operator commitments in 86 countries  60 pre-commitment trials 13 more countries LTE Subscribers are growing:  80 commercial networks in 38 countries • 17M already on LTE (source GSA) • 50M LTE connections (source Informa) LTE VoLTE devices • MetroPCS by 2012 • Verizon by 2013 Why VoLTE ? • Reduce dependency on legacy networks • Re-farm spectrum  76% of mobile operators expect to see VoLTE deployed within 3 yrs  86% support VoLTE Beyond Messaging & Internet, mobile  54% expect a positive impact of VoLTE on TCO operators are becoming “invisible & performance service enabler” (source Informa)  50% expect VoLTE to improve revenues & user Radisys Corporation Confidential 5 experience
  6. 6. Today’s Agenda Market Dynamics Evolution of Services from 2G, 3G to LTE / IMS LTE Killer App – VoLTE, Video LTE Services and System Aspects Summary Q&A / Wrap-up Radisys Corporation Confidential 6
  7. 7. Evolution of Services: 2G & 3G Radisys ATCA 12U Radisys ATCA 6U Radisys Corporation Confidential 7
  8. 8. POLL Question # 1 Which service segment beyond VoLTE is most likely to have widespread adoption in the next 2 years? A. Multimedia B. Video C. M2M D. Location Based Services E. Rich Communication Suite Radisys Corporation Confidential 8
  9. 9. Today’s Agenda Market Dynamics Evolution of Services from 2G, 3G to LTE / IMS LTE Killer Apps – VoLTE, Video LTE Services and System Aspects Conclusion Q&A / Wrap-up Radisys Corporation Confidential 9
  10. 10. VoLTE – Role of MRF GPRS Core Services in 2/2.5G Packet Data Network (Getran) PCRFMobile Access Networks SGSN HSS BSC MMTel Rx IMS AS CSCF 3G Core (UTRAN) ISC Mr Mr’/Cr RNC MME VoLTE Mb 4G/LTE Media Evolved Packet Resource eNodeB MRF Core SGW PGW Function Internet  Multimedia Resource Function  VoLTE requires flat All-IP media & control plane Corporate Intranets  MRF terminates media plane for supplementary services  MRF injected into media plane – under control of MMtel AS and/or CSCF  Example supplementary services: multiparty calls, IVR, RBT, other VAS Radisys Corporation Confidential 10
  11. 11. MRF in 3GPP IMS Architecture AS AS AS Services Application Layer Creation Control HSS S- Control Layer CSCF Mr Mr’/Cr PCR S- MGCF/ F IBCF CSCF SGF MRF LTE RACS Access PDF Mp Mp MRFC IBGF GGSN/ Mb Mb Internet BAS/ A-BGF IMS- PGW Bearer/ GW MRFP Media Plane SGSN/ Non-LTE MGW Access SGW Access Layer BSC RNC CMTS DSLAM WAG eNode B 2G Wireless 3G Wireless Cable DSL WLAN PSTN 4G/LTE • MRF Provides Media Plane Resource for All IMS Applications • LTE and Non-LTE Access Networks Radisys Corporation Confidential 11
  12. 12. LTE Built for Multiple Services MRF for Value-Added Services (VAS) • Multimedia conferencing • MRBT / CRBT • IVVR • Mobile coupons / payment • IP contact centers • plus many other enhanced services… MRF for Network Services • Multimedia transcoding • Voice Quality Enhancements MRF for Content Distribution • Multimedia content streaming • Content advertisements Radisys Corporation Confidential 12
  13. 13. MRF Characteristics in VoLTE End to End IP (No CS Domain Voice) • Increases and exposes network bandwidth variability from end terminals directly to MRF (i.e., no CS-IP MGW) Key Aspects of MRF in LTE and non-LTE Deployments • IMS-based All-IP voice and video (multiservice MRF) • Service continuity with legacy 2G/3G handsets (via IMS GWs) • High availability with low latency and jitter (media quality) • New services for increased revenues (app-independent MRF reuse) MRF: Essential Resource for VoLTE Supplementary Services • Network voice services (Ann, IVR, RBT) • Two-way or multi-party (conferencing) • Voice quality for IP mobile environment • Media recording / Legal Intercept • Media transcoding / adaptation Radisys Corporation Confidential 13
  14. 14. VoLTE and Video MRF – Challenges 1. High variability in mobile access network 2. Packet loss due to fading 3. Increased delay and echo 4. Increased number and diversity of codecs 5. Increasing need for policy-based controls 6. Increasing density and bandwidth needs 7. Coexistence of IPv6 and IPv4 in 4G / LTE 8. Managing QoS and congestion, end-to-end 9. Voice Quality Enhancements in an All-IP network 10. Reusability across diverse IMS applications Radisys Corporation Confidential 14
  15. 15. Trends and Impacts on MRF Design Mobile Data Bandwidth Mobile Data Bandwidth LTE MRF Requirements  Broadband, but highly variable  Support for 2-way Interactive Services  QoS and Policy Enforcement  Support for 1-way Streaming Services  Dynamic Rate Adaptation, Adaptive Bitrates  Policy Enforcement Functions via PCRF Bandwidth Policy Control Resource Function (PCRF) AS time IMS Core 4G IP Handsets (IPv6) Evolved Multimedia Packet LTE Packet Content 2-way (RTP, RTCP) Core Network Radio Access Network 1-way (HTTP, RTMP, RTSP) Radisys Media Server (LTE IMS MRF) Radisys Corporation Confidential 15
  16. 16. Trends and Impacts on MRF Design Mobile Applications Mobile Applications LTE MRF Requirements  Growing 3rd party applications and cloud  Network-based MRF under services based on network MRF services, 3rd party network or device applications exposed by Open APIs  Growing interest in MRB (Media Resource Broker) 3rd Party 3rd Party Network Application Network Device Server(s) Applications MRF Applications Resources Open Application APIs Application Network CSCF MRF Server(s) Resources Open Application APIs Evolved Media Resource Broker Packet (MRB) LTE Packet Core Network IMS Core Radio Access Network MRF Resource Radisys Pool Media Server (LTE IMS MRF) Radisys Corporation Confidential 16
  17. 17. Trends and Impacts on MRF Design LTE Device Evolution LTE Device Evolution LTE MRF Requirements  More Devices, Increasing Capabilities  H.264 Video (Baseline to High Profiles)  Wideband Audio Codecs  MPEG-4  High-end Video  AMR-WB  … with dynamic transcoding / transrating 64 kbps 384 kbps – 768 kbps 768kbps – 3 Mbps 3+ Mbps (HD) (Synchronous up/down) (Synchronous up/down) Audio Video Narrowband -> Wideband -> Full Band Small Screens & Low Bitrates -> HD High Framerates GSMA IR.92 GSMA IR.94 Radisys Corporation Confidential 17
  18. 18. MRF: Service Identification & Triggering  CSCF-based Service Identification and Triggering  SIP methods, URI, Headers for Filter Criteria Ex: Ex: Multimedia MMTel or Conference AS RCS AS MRF MRF Ref: 3GPP TS 23.218 IM Call Model Stage 2 Release 11 Radisys Corporation Confidential 18
  19. 19. 3GPP Standards-Compliant Service Dispatch MRFfor VoLTE / RCS Application Servers or CSCFs MRF for MMTel AS, RCS AS, and Base Media Processing 1 Enhanced Services AS Advanced Applications E.g., Multimedia Conference Ex: HSS 1 MMTel AS invokes SIP service filters and redirect/proxy to Advanced Application Server Sh ISC MMTel / RCS 2 Application Mr’/Cr MRF MMTel / RCS Services (Ex: Basic 3 Party Conference or Server 2 complete Adv Conference Application) Ex: Mr’/Cr ISC MMTel AS or CSCF invokes SIP filters and creates / controls MRF for telephony application service creation via SIP/SDP + XML S-CSCF 3 Mr 3 Basic Media Processing (3PCC or B2BUA MRF) UE1 Ex: (SIP) 3PCC media transcoding between two party connection, basic announcements, etc. UE1 MRF can terminate media, mix media, and act as an “inline” B2BUA (RTP media) Radisys Corporation Confidential 19
  20. 20. MRF – Sample Call Flows (Ann and Conferencing)(Ref: 3GPP TS 23.849) Visited Network Home Network Home/Visited Network Home Network MRF AS S- CSCF MRF AS S- CSCF 1. Sess ion Initi ati on [1] 1. Sess ion Initi ation (ad-hoc conf) [1] 2. Session Init. (ad-hoc conf) [ 1] 2. Session Initiation [1] 3. Service Logic 3. Service Logic 4. Session Initiation [2] 4. MRB/MRF Service Discovery: 5. Session Failure - Provisioning from VPLMN at registration or session initiationPlay Tone 6. Session Failure [2] - Configuration in HPLMNor Ann 7. Service Logic MRB Multi Party 5a. Establish session via 8. MRB /MRF Service Discovery: MRB (new leg 2) Conference - Provisioning from VPLMN at registration or session initiation Mixer - Configuration in HPLMN 5b. Session Initiation to MRF via SCSCF , MRF selects - media resources (new leg 2) MRB 7. Session Init. 6. Session Init. (UE2) [3] (UE2) [3] 9a. Invoke MRF via MRB ( new leg ) 8. Establish path between UE and MRF 2 9. Repeat steps 5-11 for UE3 [4], [5] 10. Session Init. (UE1) [6] 9b. Session Initiation to MRF via S-CSCF , MRF selects 11. Session Initiation ( UE1) [6] media resources ( new leg) 12. 200OK(UE1) [6] 13. 200 OK ( UE1) [6] 10. Dialogue 1 is handled normally using the information from MRF 14. 200 OK ( UE1) [1] 11. QoS and resources are reserved 15. 200 OK(UE1) [1] 12. Play Tone/ Announcement 16. Establish path between UE and MRF 1 Radisys Corporation Confidential 20
  21. 21. POLL Question # 2 Which role would you consider to be most significant for the use of MRF in VoLTE and Video Services in LTE Networks? A. Basic Audio and Video Transcoding B. Multimedia Telephony Services (MMtel) C. Video Bandwidth Optimizations and Streaming D. Video Sharing and Video Conferencing Radisys Corporation Confidential 21
  22. 22. Today’s Agenda Market Dynamics Evolution of Services from 2G, 3G to LTE / IMS LTE Killer App – VoLTE, Video LTE Services and System Aspects Conclusion Q&A / / Wrap-Up Radisys Corporation Confidential 22
  23. 23. eCSFB and LTE Iu-ps SGSN UTRAN Gs Gb Uu GERAN Iu-cs S3 MSC Um A Server SGs LTE-Uu S1-MME UE E-UTRAN MME• UE connection is handed over to UTRAN / GERAN / 1xRTT in case of CS Service (MO/MT)• New interface SGs• UE capability information carries RAT container list Radisys Corporation Confidential 23
  24. 24. Mobile Originating call in Active Mode -PS HO supported• Reference 3GPP TS 23.272• Reference 3GPP TS 23.401 Radisys Corporation Confidential 24
  25. 25. eMBMS and LTE Contents Contents Provider Provider PDN BMSC PDN MBMS GW Gateway Gateway BMSC SG-imb SGmb SG-imb SGmb MBMS MBMS MME Sm MBMS MBMS MME Sm CP UP CP UP M3 MCE M1 M3 M1 F4 F2 M2 MCE MCE eNB eNB eNB eNB • Highly useful service for users concentrated in a geography demanding the same content • MBSFN Service Area, Synchronization Area, MBSFN Area defined • Special Reference Signal, physical channel (PMCH), Transport channel (MCH), Logical Channels (MCCH, MTCH) to support eMBMS • Support for Multicast / Unicast cells only, no MBMS-only cell Radisys Corporation Confidential 25
  26. 26. eMBMS Control and Data Plane Setup • Reference 3GPP TS 36.300 • Reference 3GPP TS 36.331 • Reference 3GPP TS 36.213 Radisys Corporation Confidential 26
  27. 27. eNodeB Handling • SystemInformationBlockType 13 carries • MBSFN Area Id • Signaling MCS • MCCH Scheduling information in time & frequency domain • Change notification • MBSFNAreaConfiguration is sent via MCCH to configure • MBSFN Scheduling information in time & frequency domain • PMCH list • Corresponding MCS • UE shall decode PMCH based on MCCH Radisys Corporation Confidential 27
  28. 28. Location Services and LTE UE-assisted, E- eNB- • Location services to take Method UE-based SMLC-based assisted advantage of exact position of the UE A-GNSS Yes Yes No Downlink No Yes No • Businesses shall be able to target customers based on E-CID No Yes Yes the geographic locations • Methods for UE positioning Proprietary SLP interface possible E-SMLC • LPP, LPPa, LCsAP rer b ea PL SU L PP Pa SLs LP • Reference 3GPP TS SET 29.171, 36.355, 36.455 UE LTE-Uu eNode B S1 MME Radisys Corporation Confidential 28
  29. 29. MTC and LTE • Machine Type Communication or machine-to-machine (M2M) communication • Variety of low-powered devices hosting apps not needing human interaction • Security, Metering, Health management, Remote maintenance, tracking • Initial architecture defined by ETSI Technical Committee Machine-to-Machine communications (M2M) • Defined interfaces & functions of M2M system independent of transport • 3GPP introduced new interfaces to integrate MTC within the core network • Close integration with 3GPP core network shall enable • Combined Authentication from M2M and 3GPP • Ease of device triggering using mapping information in MTC-IWF • Group communication based on 3GPP services • Integrated charging with 3GPP-based services Radisys Corporation Confidential 29
  30. 30. 3GPP and ETSI Combined Architecture Reference 3GPP TS 23.682 Release 11 & ETSI TS 102 690 Radisys Corporation Confidential 30
  31. 31. LTE-Only Integration for MTC Radisys Corporation Confidential 31
  32. 32. Detailed MTC Applications Domains Service Area MTC applications Service Area MTC applications Security Surveillance systems Health Monitoring vital signs Backup for landline Supporting the aged or handicapped Physical access control (e.g., buildings) Web Access Telemedicine points Car/driver security Remote diagnostics Tracking & Fleet Management Remote Maintenance / Sensors Tracing Order Management Control Lighting Pay as you drive Pumps Asset Tracking Valves Navigation Elevator control Traffic information Vending machine control Road tolling Vehicle diagnostics Road traffic optimisation / steering Metering Power Payment Point of sales Gas Vending machines Water Gaming machines Heating Consumer Digital photo frame Grid control Devices Digital camera Industrial metering eBook From 3GPP TS 22.368 Rel 11 Radisys Corporation Confidential 32
  33. 33. Today’s Agenda Market Dynamics Evolution of Services from 2G, 3G to LTE / IMS LTE Killer App – VoLTE, Video LTE Services and System Aspects Conclusion Q&A / / Wrap-Up Radisys Corporation Confidential 33
  34. 34. Conclusions VoLTE & Video over LTE • MRF plays a very key role • Scalable, high density solutions required Embedded Challenges & Opportunities Wireless • LTE monetization Infrastructure • Interworking with 3G & legacy networks Solutions 3GPP LTE Standards Unmatched • System aspects improvement Products & • Easy interoperability and faster rollout Expertise Radisys Corporation Confidential 34
  35. 35. Q&A Contact us! Nitin: Adnan: Debjani: For more information on our products, visit: ̴ Please fill out our short survey ̴ Enter in your mailing address to receive a Free Trillium Poster! THANK YOU FOR ATTENDING! Radisys Corporation Confidential 35
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