Next Generation Networks architecture by ITU-T

Next Generation Networks architecture by ITU-T Robert W´ ojcik Department of Telecommunications

21st January 2009, Krak´ ow, Poland

Outline

1

The beginnings

2

The definition

3

Fundamental characteristics of NGN

4

NGN architecture

Outline

1

The beginnings

2

The definition

3

Fundamental characteristics of NGN

4

NGN architecture

Outline

1

The beginnings

2

The definition

3

Fundamental characteristics of NGN

4

NGN architecture

Outline

1

The beginnings

2

The definition

3

Fundamental characteristics of NGN

4

NGN architecture

Outline

1

The beginnings

2

The definition

3

Fundamental characteristics of NGN

4

NGN architecture

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

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?

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?

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?

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)

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)

Outline

1

The beginnings

2

The definition

3

Fundamental characteristics of NGN

4

NGN architecture

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

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”

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

Keywords

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

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.

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.

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.

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.

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.

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.

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

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

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

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

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

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

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

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

Outline

1

The beginnings

2

The definition

3

Fundamental characteristics of NGN

4

NGN architecture

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

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

Fundamental characteristics of NGN Decoupling of service provision from transport, 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 CLPS layer technologies NGN transport

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

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

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

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

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.

Fundamental characteristics of NGN Generalized mobility, Y.2012

Home Core NGN-1 Home Core NGN-2

Visited Access

User-2

User-1

Fundamental characteristics of NGN Generalized mobility, Y.2012

Visited Core NGN Home Core NGN-1

Visited Access

User-1

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

Fundamental characteristics of NGN Interworking with legacy networks via open interfaces

……

Other NGNs IWF

IWF NGN IWF

IWF Internet

IWF

PSTN

PLMN

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

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

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

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

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, email, etc.)

Video services network

Telephone services network

Data services network

New policy regulation environment (horizontal)

New business environment (compositional)

Service-based policy/regulation Access network provider domain Voice Internet

Video

MM

Pol. reg.

ANP 1 (DSL)

Service/application provider domain SP1 SP2 SP3

SPm

ANP 2 (DSL) IP (future packet ?) platform

xDSL/optic based fixed-mobile

Resource-based pol./reg.

Pol. X Reg. x

ANP 3 (Opt)

User

ANP N (cable)

CNP 1

CNP 2 CNP 3

Core network provider domain

Outline

1

The beginnings

2

The definition

3

Fundamental characteristics of NGN

4

NGN architecture

NGN architecture overview “NGN Architecture: Generic Principles, Functional Architecture, and Implementation”

Third party application providers ANI Service stratum Application functions Services control Service user profiles Management functions

Service control functions

Transport user profiles

Network attachment control functions

Resource and admission control functions

Transport control functions End-user functions

Other networks

Media handling functions

Access functions

Access transport functions

Edge functions

Core transport functions

UNI

Gateway functions NNI

Transport functions Transport stratum Control Media Management

Bibliography I

“General overview of NGN,” Recommendation ITU-T Y.2001, December 2004. “General principles and general reference model for Next Generation Networks,” Recommendation ITU-T Y.2011, October 2004. “Functional requirements and architecture of the NGN,” Recommendation ITU-T Y.2012, September 2006. “Requirements for the support of flow-state-aware transport technology in an NGN,” Recommendation ITU-T Y.2121, January 2008.

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. 42–48, October 2005. J. Cochennec, “Activities on next-generation networks under Global Information Infrastructure in ITU-T,” IEEE Communications Magazine, vol. 40, pp. 98–101, July 2002. K. Knightson, N. Morita, and T. Towle, “NGN architecture: generic principles, functional architecture, and implementation,” IEEE Communications Magazine, vol. 43, pp. 49–56, October 2005.

Bibliography III

C. Lee and D. Knight, “Realization of the Next-Generation Network,” IEEE Communications Magazine, vol. 43, pp. 34–41, October 2005. J. Song, M. Y. Chang, S. S. Lee, and J. Joung, “Overview of ITU-T NGN QoS Control,” Communications Magazine, IEEE, vol. 45, pp. 116–123, September 2007.

Thank you for your attention!