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Status of NGN architecture related studies in ITU-T SG13

JOINT ITU-T SG13 - IEEE NGSON WORKSHOP ON OVERLAY NETWORKING (Geneva, 15 May 2009). Status of NGN architecture related studies in ITU-T SG13. Olivier Le Grand WP 3/13 chairman France Telecom. Separation of services from transport in NGN (Rec. Y.2011).

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Status of NGN architecture related studies in ITU-T SG13

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  1. JOINT ITU-T SG13 - IEEE NGSON WORKSHOP ON OVERLAY NETWORKING (Geneva, 15 May 2009) Status of NGN architecture related studies in ITU-T SG13 Olivier Le Grand WP 3/13 chairman France Telecom

  2. Separation of services from transport in NGN (Rec. Y.2011) e.g., Video services (TV, movie, etc.) e.g., Data services (WWW, e-mail, etc.) e.g., Voice telephony services (audio, fax, etc.) NGN services CO-CS, CO-PS and CL-PS layer technologies NGN transport • "NGN service stratum" vs "NGN transport stratum" • Each stratum comprises one or more layers, where each layer is conceptually composed of a data (or user) plane, a control plane, and a management plane 2

  3. NGN architecture overview (Rec Y.2012) Service User Profiles Transport User Profiles Network Attachment Control Functions Applications ANI Application Support Functions & Service Support Functions Service Control Functions Service stratum Management Functions End-User Functions Resource and Admission Control Functions Other Networks Transport Control Functions Transport Functions UNI NNI Transport stratum Control Media Management

  4. NGN functional components T. User Profile Functions User Profile Functions GW GW GW GW Access Transport Functions "Service delivery platform" making use of NGN easily Applications Service Stratum Evolution scenario of PSTN and short-term solution (Y.2031) Application Support Functions and Service Support Functions (ASF&SSF) Application Functions Network attachment (Rec Y.2014) Service Control Functions S. User Profile Functions Other NGN Service Components Re-use and adaptation of 3GPP IMS to provide multimedia services (Rec Y.2021) PSTN/ISDN Emulation Service Component IP Multimedia Component IP Multimedia Service Component &PSTN/ISDN Simulation Other Networks Other Networks Legacy Terminals Network Attachment Control Functions (NACF) Resource and Admission Control Functions (RACF) Network Access A unified IP network with improved security and QoS (Rec Y.2111) Attachment Functions Legacy Terminals CustomerNetworks Core Transport Functions Access Network Functions Core transport Functions Edge Functions NGN Terminals Transport Stratum End-User Functions * Note: Gateway (GW) may exist in either Transport Stratum or End-User Functions.

  5. A-1: AS-FE* Functional Entities (ASF&SSF, Y.2012) Applications ANI Application Support Functions and Service Support Functions A-4: SS-FE A-3: APL-SCM-FE* A-2: APL-GW-FE* A-U1 A-S1 A-S2 A-S3 A-S4 A-S5 A-S6 A-T1 S-14: MRB-FE S-6: SAA-FE S-5: SUP-FE UNI Service Control Functions S-4: SL-FE S-15: GSC-FE S-1: S-CSC-FE End User Functions S-13: MRC-FE Transport Processing Functions T-9: SG-FE Note: * may include Authentication, Authorization, and Accounting

  6. Ongoing work on ASF&SSF: Y.OSE-arch • "Open Service Environment functional architecture in NGN": • Based on OSE capabilities and functional components defined in Rec ITU-T Y.2234 • Objectives: define the OSE functional architecture model • relationship/mapping with already defined Y.2012 ASF&SSF FEs

  7. NGN OSE functional positioning

  8. Overlay networking and NGN • Inputs referring to "Overlay networking" targeting different scenarios: • e.g. for supporting multicast (IPTV, Content Delivery), … • Scenarios, corresponding requirements and capabilities to be consolidated • Relationship to NGN functional architecture: • Cases to be considered (on a per scenario basis): • Overlay to the IP layer but still part of NGN Transport stratum • Overlay to the NGN Transport stratum, i.e. part of the NGN Service stratum • Overlay to the NGN Service stratum, i.e. above the NGN • Functions to be supported • Relationship to existing NGN functions and functional entities to be assessed

  9. Conclusion • The NGN architecture is being enhanced in order to support Open Service Environment (OSE) capabilities as defined in Y.2234 • Paving the way towards a possible NGN "Service Delivery Environment/Platform" architecture • Collaboration with other SDOs such as OMA, OASIS, TMF,… • Use of "Overlay networking" techniques in NGN is being studied • Consolidation expected in terms of addressed scenarios, corresponding requirements and related architectural impacts Note: See backup slides for information on NGN architecture related recommendations (approved or under development)

  10. Back up slides 10

  11. ITU-T NGN architecture related Recommendations (Y Series) 11

  12. ITU-T NGN architecture related Recommendations (Y series) 12

  13. Useful Links 13 • ITU • http://www.itu.int • NGN Global Standards Initiative (NGN-GSI) • http://www.itu.int/ITU-T/ngn/index.html • SG 13 (Future Networks including mobile and NGN) • http://www.itu.int/ITU-T/studygroups/com13/index.asp

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