Developing Physical Architecture of NGN- a methodology

Colombo, Sri Lanka, 7-10 April 2009

Developing Physical Architecture of NGN- a methodology

R. K. Siddhartha Director,

Dept. of Telecommunications, INDIA

FORUM ON NEXT GENERATION STANDARDIZATION

(Colombo, Sri Lanka, 7-10 April 2009)

Colombo, Sri Lanka, 7-10 April 2009

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NGN -Interoperability is crucial

“A packet based network able 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

Colombo, Sri Lanka, 7-10 April 2009

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ITU mark program

a Catalyst for Interoperability standards in ITU Recommendations - intrinsic interoperability in standardsCan be feedback mechanism for fixing up standards for including attributes of interoperability Boost to indigenization of the Telecom EquipmentsEnhance Knowledge creation processIncrease Competitiveness

Colombo, Sri Lanka, 7-10 April 2009

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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

Colombo, Sri Lanka, 7-10 April 2009

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Paradigm Shift !

Resolution76

Physical Entity

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Functional Architecture

[Ref. ITU-T Y.2012]

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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

Colombo, Sri Lanka, 7-10 April 2009

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Functional Entities

[Ref. ITU-T Y.2012]

S-1: Serving call Session control FE

S-13: MediaResource Control FE

S-6: S Authentication& authorisation FE

Application support functions & service support function

S-14: MediaResource broker FE

S-5: Service user profile FE

Colombo, Sri Lanka, 7-10 April 2009

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Reference Points & Interfaces

Ref. points (Service control functions)

S-1 (S-CSC-FE) - S-13 (MRC-FE) -----------------SIPSIPS-1 (S-CSC-FE) - S-5(SUP-FE), S-6(SAA-FE)---- DiameterDiameter

Reference points (ASF/SSF)

S-1 (S-CSC-FE) - ASF/SSF---------SIPSIPS-5 (SUP-FE) - ASF/SSF------------DiameterDiameterS-6 (SAA-FE) – ASF/SSF-----------DiameterDiameterS-13 (MRC-FE) – ASF/SSF---------SIP, HTTP, VoiceXML, SIP, HTTP, VoiceXML,

MSCMLMSCMLS-14 (MRB-FE) – ASF/SSF---------SIP, HTTP, SOAPSIP, HTTP, SOAP

Colombo, Sri Lanka, 7-10 April 2009

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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 Proxy & Registrar ServerServer

Home Subscriber Server Home Subscriber Server (HSS)(HSS)

Media ServerMedia Server

Application ServerApplication Server

Colombo, Sri Lanka, 7-10 April 2009

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A Section of Possible Physical Architecture of NGN for Interop

IOPtI

IOPtIII

IOPtII

To other Physical Entities Of NGN Network

To other Physical Entities of NGN network

HomeSubscriberServer

Application Server

Proxy &Registrar Server

MediaServer

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Interop Req. for Application Server

Total of Three Interfaces

IOPt for

Application Server

+ += IOPt I

IOPt II

IOPt III

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Vertical Cut

Protocols IOPt

PHY---

API

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Types of Application Server

towardsnetworkUsing OSA

towardsnetworkUsing CAMEL

SIP AS OSA-SCS IM-SSF

Colombo, Sri Lanka, 7-10 April 2009

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Y.phy_arch_ngn

““Architectural realizations and open Architectural realizations and open interfaces in NGN”interfaces in NGN”Recommendation for InteroperabilityBasic Physical architecture showing physical elements of NGNOpen interfaces are spelled for each element

Colombo, Sri Lanka, 7-10 April 2009

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Proposed Structure Y.phy_arch_ngn

Four tier document

Each protocol dressed up for Interoperability

Each Interface with vertical cut layers

Each element defined for Interoperability

Physical Architecture of NGN

Colombo, Sri Lanka, 7-10 April 2009

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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

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Thank You !Thank You !