developing physical architecture of ngn- a methodology
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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. - PowerPoint PPT PresentationTRANSCRIPT
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
2
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
ITU MarkEq
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Colombo, Sri Lanka, 7-10 April 2009
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Functional Architecture
[Ref. ITU-T Y.2012]
Colombo, Sri Lanka, 7-10 April 2009
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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
Colombo, Sri Lanka, 7-10 April 2009
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Interop Req. for Application Server
Total of Three Interfaces
IOPt for
Application Server
+ += IOPt I
IOPt II
IOPt III
Colombo, Sri Lanka, 7-10 April 2009
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Vertical Cut
Protocols IOPt
PHY---
API
Colombo, Sri Lanka, 7-10 April 2009
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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
Colombo, Sri Lanka, 7-10 April 2009
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Thank You !Thank You !