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Developing Physical Architecture of NGN- a methodology

FORUM ON NEXT GENERATION STANDARDIZATION (Colombo, Sri Lanka, 7-10 April 2009). Developing Physical Architecture of NGN- a methodology. R. K. Siddhartha Director, Dept. of Telecommunications, INDIA. NGN - Interoperability is crucial.

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Developing Physical Architecture of NGN- a methodology

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  1. FORUM ON NEXT GENERATION STANDARDIZATION (Colombo, Sri Lanka, 7-10 April 2009) Developing Physical Architecture of NGN- a methodology R. K. Siddhartha Director, Dept. of Telecommunications, INDIA

  2. NGN -Interoperability is crucial “A packet based networkable to provide telecommunication services and able to make use of multiple broadband, QoS-enabled transport technologies and in which service related functions are independent from underlying transport related technologies. It enables unfettered access for users to networks and to competing service providers and/or services of their choice. It supports generalized mobility which will allow consistent and ubiquitous provision of services to users” -Ref. ITU-T Y.2001

  3. ITU mark program • a Catalyst for Interoperability standards in ITU Recommendations - intrinsic interoperability in standards • Can be feedback mechanism for fixing up standards for including attributes of interoperability • Boost to indigenization of the Telecom Equipments • Enhance Knowledge creation process • Increase Competitiveness

  4. Resolution 76 • that providing for interoperability should be the ultimate aim of future ITU-T Recommendations • Considered : the difficulties of equipment level interoperability • Noted : need to assist developing countries in facilitating solutions which will exhibit interoperability and reduce the cost of systems and equipment procurement by operators • Instructed : Study Groups to identify ITU recommendations in light of interoperability

  5. Paradigm Shift ! Physical Entity Resolution 76 ITU Mark Equipment testing

  6. Functional Architecture [Ref. ITU-T Y.2012]

  7. Need for Physical Architecture • Physical architecture will decrease interoperability risk • Achieving seamless interoperability at the basic-level is crucial • Functional architecture is for Implementers/ developers not for Operators & N/W designers • Modular Architecture- -Implementation/ Deployment ease -Vendor independence -Optimize investment

  8. Functional Entities Application support functions & service support function S-6: S Authentication & authorisation FE S-5: Service user profile FE S-14: Media Resource broker FE S-1: Serving call Session control FE S-13: Media Resource Control FE [Ref. ITU-T Y.2012]

  9. Reference Points & Interfaces • Ref. points (Service control functions) • S-1 (S-CSC-FE) - S-13 (MRC-FE) -----------------SIP • S-1 (S-CSC-FE) - S-5(SUP-FE), S-6(SAA-FE)---- Diameter • Reference points (ASF/SSF) • S-1 (S-CSC-FE) - ASF/SSF---------SIP • S-5 (SUP-FE) - ASF/SSF------------Diameter • S-6 (SAA-FE) – ASF/SSF-----------Diameter • S-13 (MRC-FE) – ASF/SSF---------SIP, HTTP, VoiceXML, MSCML • S-14 (MRB-FE) – ASF/SSF---------SIP, HTTP, SOAP

  10. Functional Entities-Physical Entities S-1: Serving call session control FE (S-CSC-FE) S-5: Service user profile FE (SUP-FE) S-6: Service authentication & authorisation FE (SAA-FE) S-13: Media resource control FE (MRC-FE) S-14: Media Resource broker FE (MRB-FE) Application support functions and service support functions Proxy & Registrar Server Home Subscriber Server (HSS) Media Server Application Server

  11. A Section of Possible Physical Architecture of NGN for Interop To other Physical Entities of NGN network Toother Physical Entities Of NGN Network Proxy & Registrar Server Application Server IOPt III Home Subscriber Server IOPt I IOPt II Media Server

  12. Interop Req. for Application Server IOPt for Application Server + + = IOPt II IOPt III IOPt I Total of Three Interfaces

  13. Vertical Cut API --- PHY Protocols IOPt

  14. Types of Application Server towards network Using OSA towards network Using CAMEL OSA-SCS IM-SSF SIP AS

  15. Y.phy_arch_ngn “Architectural realizations and open interfaces in NGN” • Recommendation for Interoperability • Basic Physical architecture showing physical elements of NGN • Open interfaces are spelled for each element

  16. Proposed Structure Y.phy_arch_ngn Physical Architecture of NGN Each element defined for Interoperability Each Interface with vertical cut layers Each protocol dressed up for Interoperability • Four tier document

  17. ITU Mark & Y.phy-arch-ngn • Can be a Seed document for Interoperability Standards & testing in NGN • Target – 50% of elements of NGN are standardized as physical entities it can help achieving objectives of NGN (Y. 2oo1) • Digital Opportunity Index will be improved in developing countries

  18. Thank You !

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