Next Generation Networks architecture by ITU-T

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1 Next Generation Networks architecture by ITU-T Robert Wójcik Department of Telecommunications 21st January 2009, Kraków, Poland

2 Outline 1 The beginnings 2 The definition 3 Fundamental characteristics of NGN 4 NGN architecture

3 Outline 1 The beginnings 2 The definition 3 Fundamental characteristics of NGN 4 NGN architecture

4 Outline 1 The beginnings 2 The definition 3 Fundamental characteristics of NGN 4 NGN architecture

5 Outline 1 The beginnings 2 The definition 3 Fundamental characteristics of NGN 4 NGN architecture

6 Outline 1 The beginnings 2 The definition 3 Fundamental characteristics of NGN 4 NGN architecture

7 The motivation towards NGN the Internet was designed for simple connectivity of best-effort traffic explosion of data traffic strong demand for new multimedia services increasing demand for mobility

8 The genesis ITU-T Workshop on IP Networking and Mediacom in Geneva, April 2001 ITU-T Workshop NGN: what, when and how, Geneva, July 2003 no common understanding of what an NGN is! So why did ITU-T take lead, when there was no consensus?

9 The genesis ITU-T Workshop on IP Networking and Mediacom in Geneva, April 2001 ITU-T Workshop NGN: what, when and how, Geneva, July 2003 no common understanding of what an NGN is! So why did ITU-T take lead, when there was no consensus?

10 The genesis ITU-T Workshop on IP Networking and Mediacom in Geneva, April 2001 ITU-T Workshop NGN: what, when and how, Geneva, July 2003 no common understanding of what an NGN is! So why did ITU-T take lead, when there was no consensus?

11 The genesis several institutions began to work on NGN overlaps? Focus group on NGN (FGNGN) was created under ITU responsibility European Telecommunications Standards Institute (ETSI) Alliance of Telecommunications Industry Solutions (ATIS) China Communications Standards Association (CCSA) Telecommunication Technology Association (TTA) Telecommunication Technology Committee (TTC) 9th Global Standard Collaboration (GSC)

12 The genesis several institutions began to work on NGN overlaps? Focus group on NGN (FGNGN) was created under ITU responsibility European Telecommunications Standards Institute (ETSI) Alliance of Telecommunications Industry Solutions (ATIS) China Communications Standards Association (CCSA) Telecommunication Technology Association (TTA) Telecommunication Technology Committee (TTC) 9th Global Standard Collaboration (GSC)

13 Outline 1 The beginnings 2 The definition 3 Fundamental characteristics of NGN 4 NGN architecture

14 ITU-T Y Series Recommendations GLOBAL INFORMATION INFRASTRUCTURE INTERNET PROTOCOL ASPECTS NEXT GENERATION NETWORKS Frameworks and functional architecture models Quality of Service and performance Service aspects: Service capabilities and service architecture Service aspects: Interoperability of services and networks in NGN Numbering, naming and addressing Network management Network control architectures and protocols Security Generalized mobility Y.100-Y.899 Y.1000-Y.1899 Y.2000-Y.2899 Y.2000-Y.2099 Y.2100-Y.2199 Y.2200-Y.2249 Y.2250-Y.2299 Y.2300-Y.2399 Y.2400-Y.2499 Y.2500-Y.2599 Y.2700-Y.2799 Y.2800-Y.2899

15 Related documents ITU-T Recommendation Y.2001, General overview of NGN, 12/2004 ITU-T Recommendation Y.2011, General principles and general reference model for Next Generation Networks, 10/2004 ITU-T Recommendation Y.2012, Functional requirements and architecture of the NGN, 09/2006 ITU-T Recommendation Y.2121, Requirements for the support of flow-state-aware transport technology in NGN

16 Areas of key importance in NGN Identified by ITU-T Recommendation Y.2001, Section 8 General framework and architectural principles Architecture models for the NGN End-to-end QoS Service platforms Network management Security Generalized mobility Network control architecture and protocols Service capabilities and service architecture Interoperability of services and network in NGN Numbering, naming and addressing Disaster and relief communication capabilities

17 Keywords ITU-T Rec. Y.2001 decoupling between transport and service generalized mobility GII (Global Information Infrastructure) NGN overview

18 Definition ITU-T Rec. Y.2001 (12/2004) Next Generation Networks (NGN) 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.

19 Definition ITU-T Rec. Y.2001 (12/2004) Next Generation Networks (NGN) 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.

20 Definition ITU-T Rec. Y.2001 (12/2004) Next Generation Networks (NGN) 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.

21 Definition ITU-T Rec. Y.2001 (12/2004) Next Generation Networks (NGN) 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.

22 Definition ITU-T Rec. Y.2001 (12/2004) Next Generation Networks (NGN) 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.

23 Definition ITU-T Rec. Y.2001 (12/2004) Next Generation Networks (NGN) 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.

24 Objectives of ITU-T NGN Economic aspects promote fair competition encourage private investment define a framework for architecture and capabilities to be able to meet various regulatory requirements provide open access to networks

25 Objectives of ITU-T NGN Economic aspects promote fair competition encourage private investment define a framework for architecture and capabilities to be able to meet various regulatory requirements provide open access to networks

26 Objectives of ITU-T NGN Economic aspects promote fair competition encourage private investment define a framework for architecture and capabilities to be able to meet various regulatory requirements provide open access to networks

27 Objectives of ITU-T NGN Economic aspects promote fair competition encourage private investment define a framework for architecture and capabilities to be able to meet various regulatory requirements provide open access to networks

28 Objectives of ITU-T NGN Social aspects ensuring universal provision and access to services promoting equality of opportunity to the citizen promoting diversity of content, including cultural and linguistic diversity recognizing the necessity of worldwide cooperation with particular attention to less developed countries

29 Objectives of ITU-T NGN Social aspects ensuring universal provision and access to services promoting equality of opportunity to the citizen promoting diversity of content, including cultural and linguistic diversity recognizing the necessity of worldwide cooperation with particular attention to less developed countries

30 Objectives of ITU-T NGN Social aspects ensuring universal provision and access to services promoting equality of opportunity to the citizen promoting diversity of content, including cultural and linguistic diversity recognizing the necessity of worldwide cooperation with particular attention to less developed countries

31 Objectives of ITU-T NGN Social aspects ensuring universal provision and access to services promoting equality of opportunity to the citizen promoting diversity of content, including cultural and linguistic diversity recognizing the necessity of worldwide cooperation with particular attention to less developed countries

32 Outline 1 The beginnings 2 The definition 3 Fundamental characteristics of NGN 4 NGN architecture

33 Fundamental characteristics of NGN The list packet-based transfer decoupling of service provision from transport support for a wide range of services real time, streaming, non-real time and multimedia broadband capabilities with end-to-end QoS generalized mobility interworking with legacy networks via open interfaces unrestricted access by users to different service providers converged services between fixed/mobile independence of service-related functions from underlying transport technologies support of multiple last-mile technologies

34 Fundamental characteristics of NGN The list packet-based transfer decoupling of service provision from transport support for a wide range of services real time, streaming, non-real time and multimedia broadband capabilities with end-to-end QoS generalized mobility interworking with legacy networks via open interfaces unrestricted access by users to different service providers converged services between fixed/mobile independence of service-related functions from underlying transport technologies support of multiple last-mile technologies

35 Fundamental characteristics of NGN Decoupling of service provision from transport, Y.2011 e.g., Video services (TV, movie, etc.) e.g., Data services (WWW, , etc.) e.g., voice telephony services (audio, fax, etc.) NGN services CO-CS, CO-PS and CLPS layer technologies NGN transport

36 Fundamental characteristics of NGN The list packet-based transfer decoupling of service provision from transport support for a wide range of services real time, streaming, non-real time and multimedia broadband capabilities with end-to-end QoS generalized mobility interworking with legacy networks via open interfaces unrestricted access by users to different service providers converged services between fixed/mobile independence of service-related functions from underlying transport technologies support of multiple last-mile technologies

37 Fundamental characteristics of NGN The list packet-based transfer decoupling of service provision from transport support for a wide range of services real time, streaming, non-real time and multimedia broadband capabilities with end-to-end QoS generalized mobility interworking with legacy networks via open interfaces unrestricted access by users to different service providers converged services between fixed/mobile independence of service-related functions from underlying transport technologies support of multiple last-mile technologies

38 Fundamental characteristics of NGN End-to-end QoS in NGN Flow-state-aware (FSA) transport technology 4 classes of service (service contexts) ARS, GRS, MRS, VRS flow-based differentiation stateful aggregations in-band and out-of-band signaling

39 Fundamental characteristics of NGN The list packet-based transfer decoupling of service provision from transport support for a wide range of services real time, streaming, non-real time and multimedia broadband capabilities with end-to-end QoS generalized mobility interworking with legacy networks via open interfaces unrestricted access by users to different service providers converged services between fixed/mobile independence of service-related functions from underlying transport technologies support of multiple last-mile technologies

40 Fundamental characteristics of NGN Generalized mobility Generalized mobility The ability for the user or other mobile entities to communicate and access services irrespective of changes of location or technical environment. The degree of service availability may depend on several factors including Access Network capabilities, service level agreements between the user s home network and the visited network (if applicable), etc. Mobility includes the ability of telecommunication with or without service continuity.

41 Fundamental characteristics of NGN Generalized mobility, Y.2012 Home Core NGN-1 Home Core NGN-2 Visited Access User-2 User-1

42 Fundamental characteristics of NGN Generalized mobility, Y.2012 Visited Core NGN Home Core NGN-1 Visited Access User-1

43 Fundamental characteristics of NGN The list packet-based transfer decoupling of service provision from transport support for a wide range of services real time, streaming, non-real time and multimedia broadband capabilities with end-to-end QoS generalized mobility interworking with legacy networks via open interfaces unrestricted access by users to different service providers converged services between fixed/mobile independence of service-related functions from underlying transport technologies support of multiple last-mile technologies

44 Fundamental characteristics of NGN Interworking with legacy networks via open interfaces Other NGNs IWF NGN IWF Internet IWF IWF IWF PLMN PSTN

45 Fundamental characteristics of NGN The list packet-based transfer decoupling of service provision from transport support for a wide range of services real time, streaming, non-real time and multimedia broadband capabilities with end-to-end QoS generalized mobility interworking with legacy networks via open interfaces unrestricted access by users to different service providers converged services between fixed/mobile independence of service-related functions from underlying transport technologies support of multiple last-mile technologies

46 Fundamental characteristics of NGN The list packet-based transfer decoupling of service provision from transport support for a wide range of services real time, streaming, non-real time and multimedia broadband capabilities with end-to-end QoS generalized mobility interworking with legacy networks via open interfaces unrestricted access by users to different service providers converged services between fixed/mobile independence of service-related functions from underlying transport technologies support of multiple last-mile technologies

47 Fundamental characteristics of NGN The list packet-based transfer decoupling of service provision from transport support for a wide range of services real time, streaming, non-real time and multimedia broadband capabilities with end-to-end QoS generalized mobility interworking with legacy networks via open interfaces unrestricted access by users to different service providers converged services between fixed/mobile independence of service-related functions from underlying transport technologies support of multiple last-mile technologies

48 Fundamental characteristics of NGN The list packet-based transfer decoupling of service provision from transport support for a wide range of services real time, streaming, non-real time and multimedia broadband capabilities with end-to-end QoS generalized mobility interworking with legacy networks via open interfaces unrestricted access by users to different service providers converged services between fixed/mobile independence of service-related functions from underlying transport technologies support of multiple last-mile technologies

49 Fundamental characteristic summary C. Lee and D. Knight, Realization of the Next-Generation Network Pre-NGN Video services (TV, movie, etc.) Telephone services Data services (www, , etc.) Video services network Telephone services network Data services network New policy regulation environment (horizontal) New business environment (compositional) Service-based policy/regulation Voice Internet Video MM Pol. reg. Access network provider domain ANP 1 (DSL) Service/application provider domain SP1 SP2 SP3 SPm ANP 2 (DSL) IP (future packet?) platform Pol. X Reg. x ANP 3 (Opt) CNP 1 CNP 2 xdsl/optic based fixed-mobile User ANP N (cable) CNP 3 Resource-based pol./reg. Core network provider domain

50 Outline 1 The beginnings 2 The definition 3 Fundamental characteristics of NGN 4 NGN architecture

51 NGN architecture overview NGN Architecture: Generic Principles, Functional Architecture, and Implementation Third party application providers ANI Service stratum Application functions Service user profiles Service control functions Services control Management functions End-user functions Transport user profiles Network attachment control functions Resource and admission control functions Transport control functions Media handling functions Other networks UNI Access functions Transport stratum Access transport functions Edge functions Transport functions Core transport functions Gateway functions NNI Control Media Management

52 Bibliography I General overview of NGN, Recommendation ITU-T Y.2001, December General principles and general reference model for Next Generation Networks, Recommendation ITU-T Y.2011, October Functional requirements and architecture of the NGN, Recommendation ITU-T Y.2012, September Requirements for the support of flow-state-aware transport technology in an NGN, Recommendation ITU-T Y.2121, January 2008.

53 Bibliography II M. Carugi, B. Hirschman, and A. Narita, Introduction to the ITU-T NGN focus group release 1: target environment, services, and capabilities, Communications Magazine, IEEE, vol. 43, pp , October J. Cochennec, Activities on next-generation networks under Global Information Infrastructure in ITU-T, IEEE Communications Magazine, vol. 40, pp , July K. Knightson, N. Morita, and T. Towle, NGN architecture: generic principles, functional architecture, and implementation, IEEE Communications Magazine, vol. 43, pp , October 2005.

54 Bibliography III C. Lee and D. Knight, Realization of the Next-Generation Network, IEEE Communications Magazine, vol. 43, pp , October J. Song, M. Y. Chang, S. S. Lee, and J. Joung, Overview of ITU-T NGN QoS Control, Communications Magazine, IEEE, vol. 45, pp , September 2007.

55 Thank you for your attention!

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