NGN architecture
NGN architecture
NGN architecture
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Next Generation Networks<br />
<strong>architecture</strong> by ITU-T<br />
Robert Wójcik<br />
Department of Telecommunications<br />
21st January 2009, Kraków, Poland
Outline<br />
1 The beginnings<br />
2 The definition<br />
3 Fundamental characteristics of <strong>NGN</strong><br />
4 <strong>NGN</strong> <strong>architecture</strong>
Outline<br />
1 The beginnings<br />
2 The definition<br />
3 Fundamental characteristics of <strong>NGN</strong><br />
4 <strong>NGN</strong> <strong>architecture</strong>
Outline<br />
1 The beginnings<br />
2 The definition<br />
3 Fundamental characteristics of <strong>NGN</strong><br />
4 <strong>NGN</strong> <strong>architecture</strong>
Outline<br />
1 The beginnings<br />
2 The definition<br />
3 Fundamental characteristics of <strong>NGN</strong><br />
4 <strong>NGN</strong> <strong>architecture</strong>
Outline<br />
1 The beginnings<br />
2 The definition<br />
3 Fundamental characteristics of <strong>NGN</strong><br />
4 <strong>NGN</strong> <strong>architecture</strong>
The motivation towards <strong>NGN</strong><br />
the Internet was designed for simple connectivity of best-effort<br />
traffic<br />
explosion of data traffic<br />
strong demand for new multimedia services<br />
increasing demand for mobility
The genesis<br />
ITU-T Workshop on IP Networking and Mediacom in Geneva,<br />
April 2001<br />
ITU-T Workshop “<strong>NGN</strong>: what, when and how”, Geneva, July<br />
2003<br />
no common understanding of what an <strong>NGN</strong> is!<br />
So why did ITU-T take lead, when there was no consensus?
The genesis<br />
ITU-T Workshop on IP Networking and Mediacom in Geneva,<br />
April 2001<br />
ITU-T Workshop “<strong>NGN</strong>: what, when and how”, Geneva, July<br />
2003<br />
no common understanding of what an <strong>NGN</strong> is!<br />
So why did ITU-T take lead, when there was no consensus?
The genesis<br />
ITU-T Workshop on IP Networking and Mediacom in Geneva,<br />
April 2001<br />
ITU-T Workshop “<strong>NGN</strong>: what, when and how”, Geneva, July<br />
2003<br />
no common understanding of what an <strong>NGN</strong> is!<br />
So why did ITU-T take lead, when there was no consensus?
The genesis<br />
several institutions began to work on <strong>NGN</strong><br />
overlaps ?<br />
Focus group on <strong>NGN</strong> (FG<strong>NGN</strong>) was created under ITU<br />
responsibility<br />
European Telecommunications Standards Institute (ETSI)<br />
Alliance of Telecommunications Industry Solutions (ATIS)<br />
China Communications Standards Association (CCSA)<br />
Telecommunication Technology Association (TTA)<br />
Telecommunication Technology Committee (TTC)<br />
9th Global Standard Collaboration (GSC)
The genesis<br />
several institutions began to work on <strong>NGN</strong><br />
overlaps ?<br />
Focus group on <strong>NGN</strong> (FG<strong>NGN</strong>) was created under ITU<br />
responsibility<br />
European Telecommunications Standards Institute (ETSI)<br />
Alliance of Telecommunications Industry Solutions (ATIS)<br />
China Communications Standards Association (CCSA)<br />
Telecommunication Technology Association (TTA)<br />
Telecommunication Technology Committee (TTC)<br />
9th Global Standard Collaboration (GSC)
Outline<br />
1 The beginnings<br />
2 The definition<br />
3 Fundamental characteristics of <strong>NGN</strong><br />
4 <strong>NGN</strong> <strong>architecture</strong>
ITU-T Y Series Recommendations<br />
GLOBAL INFORMATION INFRASTRUCTURE<br />
INTERNET PROTOCOL ASPECTS<br />
NEXT GENERATION NETWORKS<br />
Frameworks and functional <strong>architecture</strong> models<br />
Quality of Service and performance<br />
Service aspects: Service capabilities and service <strong>architecture</strong><br />
Service aspects: Interoperability of services and networks in <strong>NGN</strong><br />
Numbering, naming and addressing<br />
Network management<br />
Network control <strong>architecture</strong>s and protocols<br />
Security<br />
Generalized mobility<br />
Y.100-Y.899<br />
Y.1000-Y.1899<br />
Y.2000-Y.2899<br />
Y.2000-Y.2099<br />
Y.2100-Y.2199<br />
Y.2200-Y.2249<br />
Y.2250-Y.2299<br />
Y.2300-Y.2399<br />
Y.2400-Y.2499<br />
Y.2500-Y.2599<br />
Y.2700-Y.2799<br />
Y.2800-Y.2899
Related documents<br />
ITU-T Recommendation Y.2001, “General overview of<br />
<strong>NGN</strong>”, 12/2004<br />
ITU-T Recommendation Y.2011, “General principles and<br />
general reference model for Next Generation Networks”,<br />
10/2004<br />
ITU-T Recommendation Y.2012, “Functional requirements<br />
and <strong>architecture</strong> of the <strong>NGN</strong>”, 09/2006<br />
ITU-T Recommendation Y.2121, “Requirements for the<br />
support of flow-state-aware transport technology in <strong>NGN</strong>”
Areas of key importance in <strong>NGN</strong><br />
Identified by ITU-T Recommendation Y.2001, Section 8<br />
General framework and architectural principles<br />
Architecture models for the <strong>NGN</strong><br />
End-to-end QoS<br />
Service platforms<br />
Network management<br />
Security<br />
Generalized mobility<br />
Network control <strong>architecture</strong> and protocols<br />
Service capabilities and service <strong>architecture</strong><br />
Interoperability of services and network in <strong>NGN</strong><br />
Numbering, naming and addressing<br />
Disaster and relief communication capabilities
Keywords<br />
ITU-T Rec. Y.2001<br />
decoupling between transport and service<br />
generalized mobility<br />
GII (Global Information Infrastructure)<br />
<strong>NGN</strong><br />
overview
Definition<br />
ITU-T Rec. Y.2001 (12/2004)<br />
Next Generation Networks (<strong>NGN</strong>)<br />
A packet-based network able to provide telecommunication services<br />
and able to make use of multiple broadband, QoS-enabled<br />
transport technologies and in which service-related functions are<br />
independent from underlying transport-related technologies. It<br />
enables unfettered access for users to networks and to competing<br />
service providers and/or services of their choice. It supports<br />
generalized mobility which will allow consistent and ubiquitous<br />
provision of services to users.
Definition<br />
ITU-T Rec. Y.2001 (12/2004)<br />
Next Generation Networks (<strong>NGN</strong>)<br />
A packet-based network able to provide telecommunication services<br />
and able to make use of multiple broadband, QoS-enabled<br />
transport technologies and in which service-related functions are<br />
independent from underlying transport-related technologies. It<br />
enables unfettered access for users to networks and to competing<br />
service providers and/or services of their choice. It supports<br />
generalized mobility which will allow consistent and ubiquitous<br />
provision of services to users.
Definition<br />
ITU-T Rec. Y.2001 (12/2004)<br />
Next Generation Networks (<strong>NGN</strong>)<br />
A packet-based network able to provide telecommunication services<br />
and able to make use of multiple broadband, QoS-enabled<br />
transport technologies and in which service-related functions are<br />
independent from underlying transport-related technologies. It<br />
enables unfettered access for users to networks and to competing<br />
service providers and/or services of their choice. It supports<br />
generalized mobility which will allow consistent and ubiquitous<br />
provision of services to users.
Definition<br />
ITU-T Rec. Y.2001 (12/2004)<br />
Next Generation Networks (<strong>NGN</strong>)<br />
A packet-based network able to provide telecommunication services<br />
and able to make use of multiple broadband, QoS-enabled<br />
transport technologies and in which service-related functions are<br />
independent from underlying transport-related technologies. It<br />
enables unfettered access for users to networks and to competing<br />
service providers and/or services of their choice. It supports<br />
generalized mobility which will allow consistent and ubiquitous<br />
provision of services to users.
Definition<br />
ITU-T Rec. Y.2001 (12/2004)<br />
Next Generation Networks (<strong>NGN</strong>)<br />
A packet-based network able to provide telecommunication services<br />
and able to make use of multiple broadband, QoS-enabled<br />
transport technologies and in which service-related functions are<br />
independent from underlying transport-related technologies. It<br />
enables unfettered access for users to networks and to competing<br />
service providers and/or services of their choice. It supports<br />
generalized mobility which will allow consistent and ubiquitous<br />
provision of services to users.
Definition<br />
ITU-T Rec. Y.2001 (12/2004)<br />
Next Generation Networks (<strong>NGN</strong>)<br />
A packet-based network able to provide telecommunication services<br />
and able to make use of multiple broadband, QoS-enabled<br />
transport technologies and in which service-related functions are<br />
independent from underlying transport-related technologies. It<br />
enables unfettered access for users to networks and to competing<br />
service providers and/or services of their choice. It supports<br />
generalized mobility which will allow consistent and ubiquitous<br />
provision of services to users.
Objectives of ITU-T <strong>NGN</strong><br />
Economic aspects<br />
promote fair competition<br />
encourage private investment<br />
define a framework for <strong>architecture</strong> and capabilities to be able<br />
to meet various regulatory requirements<br />
provide open access to networks
Objectives of ITU-T <strong>NGN</strong><br />
Economic aspects<br />
promote fair competition<br />
encourage private investment<br />
define a framework for <strong>architecture</strong> and capabilities to be able<br />
to meet various regulatory requirements<br />
provide open access to networks
Objectives of ITU-T <strong>NGN</strong><br />
Economic aspects<br />
promote fair competition<br />
encourage private investment<br />
define a framework for <strong>architecture</strong> and capabilities to be able<br />
to meet various regulatory requirements<br />
provide open access to networks
Objectives of ITU-T <strong>NGN</strong><br />
Economic aspects<br />
promote fair competition<br />
encourage private investment<br />
define a framework for <strong>architecture</strong> and capabilities to be able<br />
to meet various regulatory requirements<br />
provide open access to networks
Objectives of ITU-T <strong>NGN</strong><br />
Social aspects<br />
ensuring universal provision and access to services<br />
promoting equality of opportunity to the citizen<br />
promoting diversity of content, including cultural and<br />
linguistic diversity<br />
recognizing the necessity of worldwide cooperation with<br />
particular attention to less developed countries
Objectives of ITU-T <strong>NGN</strong><br />
Social aspects<br />
ensuring universal provision and access to services<br />
promoting equality of opportunity to the citizen<br />
promoting diversity of content, including cultural and<br />
linguistic diversity<br />
recognizing the necessity of worldwide cooperation with<br />
particular attention to less developed countries
Objectives of ITU-T <strong>NGN</strong><br />
Social aspects<br />
ensuring universal provision and access to services<br />
promoting equality of opportunity to the citizen<br />
promoting diversity of content, including cultural and<br />
linguistic diversity<br />
recognizing the necessity of worldwide cooperation with<br />
particular attention to less developed countries
Objectives of ITU-T <strong>NGN</strong><br />
Social aspects<br />
ensuring universal provision and access to services<br />
promoting equality of opportunity to the citizen<br />
promoting diversity of content, including cultural and<br />
linguistic diversity<br />
recognizing the necessity of worldwide cooperation with<br />
particular attention to less developed countries
Outline<br />
1 The beginnings<br />
2 The definition<br />
3 Fundamental characteristics of <strong>NGN</strong><br />
4 <strong>NGN</strong> <strong>architecture</strong>
Fundamental characteristics of <strong>NGN</strong><br />
The list<br />
packet-based transfer<br />
decoupling of service provision from transport<br />
support for a wide range of services<br />
real time, streaming, non-real time and multimedia<br />
broadband capabilities with end-to-end QoS<br />
generalized mobility<br />
interworking with legacy networks via open interfaces<br />
unrestricted access by users to different service providers<br />
converged services between fixed/mobile<br />
independence of service-related functions from underlying<br />
transport technologies<br />
support of multiple last-mile technologies
Fundamental characteristics of <strong>NGN</strong><br />
The list<br />
packet-based transfer<br />
decoupling of service provision from transport<br />
support for a wide range of services<br />
real time, streaming, non-real time and multimedia<br />
broadband capabilities with end-to-end QoS<br />
generalized mobility<br />
interworking with legacy networks via open interfaces<br />
unrestricted access by users to different service providers<br />
converged services between fixed/mobile<br />
independence of service-related functions from underlying<br />
transport technologies<br />
support of multiple last-mile technologies
Fundamental characteristics of <strong>NGN</strong><br />
Decoupling of service provision from transport, Y.2011<br />
e.g., Video services (TV, movie, etc.)<br />
e.g., Data services (WWW, e-mail, etc.)<br />
e.g., voice telephony services (audio, fax, etc.)<br />
<strong>NGN</strong> services<br />
CO-CS, CO-PS and CLPS layer technologies<br />
<strong>NGN</strong> transport
Fundamental characteristics of <strong>NGN</strong><br />
The list<br />
packet-based transfer<br />
decoupling of service provision from transport<br />
support for a wide range of services<br />
real time, streaming, non-real time and multimedia<br />
broadband capabilities with end-to-end QoS<br />
generalized mobility<br />
interworking with legacy networks via open interfaces<br />
unrestricted access by users to different service providers<br />
converged services between fixed/mobile<br />
independence of service-related functions from underlying<br />
transport technologies<br />
support of multiple last-mile technologies
Fundamental characteristics of <strong>NGN</strong><br />
The list<br />
packet-based transfer<br />
decoupling of service provision from transport<br />
support for a wide range of services<br />
real time, streaming, non-real time and multimedia<br />
broadband capabilities with end-to-end QoS<br />
generalized mobility<br />
interworking with legacy networks via open interfaces<br />
unrestricted access by users to different service providers<br />
converged services between fixed/mobile<br />
independence of service-related functions from underlying<br />
transport technologies<br />
support of multiple last-mile technologies
Fundamental characteristics of <strong>NGN</strong><br />
End-to-end QoS in <strong>NGN</strong><br />
Flow-state-aware (FSA) transport technology<br />
4 classes of service (service contexts)<br />
ARS, GRS, MRS, VRS<br />
flow-based differentiation<br />
stateful aggregations<br />
in-band and out-of-band signaling
Fundamental characteristics of <strong>NGN</strong><br />
The list<br />
packet-based transfer<br />
decoupling of service provision from transport<br />
support for a wide range of services<br />
real time, streaming, non-real time and multimedia<br />
broadband capabilities with end-to-end QoS<br />
generalized mobility<br />
interworking with legacy networks via open interfaces<br />
unrestricted access by users to different service providers<br />
converged services between fixed/mobile<br />
independence of service-related functions from underlying<br />
transport technologies<br />
support of multiple last-mile technologies
Fundamental characteristics of <strong>NGN</strong><br />
Generalized mobility<br />
Generalized mobility<br />
The ability for the user or other mobile entities to communicate<br />
and access services irrespective of changes of location or<br />
technical environment. The degree of service availability may<br />
depend on several factors including Access Network capabilities,<br />
service level agreements between the user’s home network and the<br />
visited network (if applicable), etc. Mobility includes the ability of<br />
telecommunication with or without service continuity.
Fundamental characteristics of <strong>NGN</strong><br />
Generalized mobility, Y.2012<br />
Home Core <strong>NGN</strong>-1<br />
Home Core <strong>NGN</strong>-2<br />
Visited<br />
Access<br />
User-2<br />
User-1
Fundamental characteristics of <strong>NGN</strong><br />
Generalized mobility, Y.2012<br />
Visited Core <strong>NGN</strong><br />
Home Core <strong>NGN</strong>-1<br />
Visited<br />
Access<br />
User-1
Fundamental characteristics of <strong>NGN</strong><br />
The list<br />
packet-based transfer<br />
decoupling of service provision from transport<br />
support for a wide range of services<br />
real time, streaming, non-real time and multimedia<br />
broadband capabilities with end-to-end QoS<br />
generalized mobility<br />
interworking with legacy networks via open interfaces<br />
unrestricted access by users to different service providers<br />
converged services between fixed/mobile<br />
independence of service-related functions from underlying<br />
transport technologies<br />
support of multiple last-mile technologies
Fundamental characteristics of <strong>NGN</strong><br />
Interworking with legacy networks via open interfaces<br />
Other <strong>NGN</strong>s<br />
……<br />
IWF<br />
<strong>NGN</strong><br />
IWF<br />
Internet<br />
IWF<br />
IWF<br />
IWF<br />
PLMN<br />
PSTN
Fundamental characteristics of <strong>NGN</strong><br />
The list<br />
packet-based transfer<br />
decoupling of service provision from transport<br />
support for a wide range of services<br />
real time, streaming, non-real time and multimedia<br />
broadband capabilities with end-to-end QoS<br />
generalized mobility<br />
interworking with legacy networks via open interfaces<br />
unrestricted access by users to different service providers<br />
converged services between fixed/mobile<br />
independence of service-related functions from underlying<br />
transport technologies<br />
support of multiple last-mile technologies
Fundamental characteristics of <strong>NGN</strong><br />
The list<br />
packet-based transfer<br />
decoupling of service provision from transport<br />
support for a wide range of services<br />
real time, streaming, non-real time and multimedia<br />
broadband capabilities with end-to-end QoS<br />
generalized mobility<br />
interworking with legacy networks via open interfaces<br />
unrestricted access by users to different service providers<br />
converged services between fixed/mobile<br />
independence of service-related functions from underlying<br />
transport technologies<br />
support of multiple last-mile technologies
Fundamental characteristics of <strong>NGN</strong><br />
The list<br />
packet-based transfer<br />
decoupling of service provision from transport<br />
support for a wide range of services<br />
real time, streaming, non-real time and multimedia<br />
broadband capabilities with end-to-end QoS<br />
generalized mobility<br />
interworking with legacy networks via open interfaces<br />
unrestricted access by users to different service providers<br />
converged services between fixed/mobile<br />
independence of service-related functions from underlying<br />
transport technologies<br />
support of multiple last-mile technologies
Fundamental characteristics of <strong>NGN</strong><br />
The list<br />
packet-based transfer<br />
decoupling of service provision from transport<br />
support for a wide range of services<br />
real time, streaming, non-real time and multimedia<br />
broadband capabilities with end-to-end QoS<br />
generalized mobility<br />
interworking with legacy networks via open interfaces<br />
unrestricted access by users to different service providers<br />
converged services between fixed/mobile<br />
independence of service-related functions from underlying<br />
transport technologies<br />
support of multiple last-mile technologies
Fundamental characteristic summary<br />
C. Lee and D. Knight, “Realization of the Next-Generation<br />
Network”<br />
Pre-<strong>NGN</strong><br />
Video<br />
services<br />
(TV,<br />
movie,<br />
etc.)<br />
Telephone<br />
services<br />
Data<br />
services<br />
(www,<br />
email,<br />
etc.)<br />
Video<br />
services<br />
network<br />
Telephone<br />
services<br />
network<br />
Data<br />
services<br />
network<br />
New policy regulation<br />
environment (horizontal)<br />
New business<br />
environment (compositional)<br />
Service-based policy/regulation<br />
Voice Internet Video MM<br />
Pol.<br />
reg.<br />
Access network<br />
provider domain<br />
ANP 1 (DSL)<br />
Service/application<br />
provider domain<br />
SP1 SP2 SP3<br />
SPm<br />
ANP 2 (DSL)<br />
IP (future packet ?) platform<br />
Pol. X<br />
Reg. x<br />
ANP 3 (Opt)<br />
CNP<br />
1<br />
CNP<br />
2<br />
xDSL/optic based fixed-mobile<br />
User<br />
ANP N (cable)<br />
CNP<br />
3<br />
Resource-based pol./reg.<br />
Core network<br />
provider domain
Outline<br />
1 The beginnings<br />
2 The definition<br />
3 Fundamental characteristics of <strong>NGN</strong><br />
4 <strong>NGN</strong> <strong>architecture</strong>
<strong>NGN</strong> <strong>architecture</strong> overview<br />
“<strong>NGN</strong> Architecture: Generic Principles, Functional Architecture,<br />
and Implementation”<br />
Third party application providers<br />
ANI<br />
Service stratum<br />
Application functions<br />
Service user<br />
profiles<br />
Service control<br />
functions<br />
Services<br />
control<br />
Management functions<br />
End-user<br />
functions<br />
Transport user<br />
profiles<br />
Network<br />
attachment<br />
control functions<br />
Resource and<br />
admission<br />
control functions<br />
Transport control functions<br />
Media handling<br />
functions<br />
Other<br />
networks<br />
UNI<br />
Access<br />
functions<br />
Transport stratum<br />
Access transport<br />
functions<br />
Edge<br />
functions<br />
Transport functions<br />
Core transport<br />
functions<br />
Gateway<br />
functions<br />
NNI<br />
Control<br />
Media<br />
Management
Bibliography I<br />
“General overview of <strong>NGN</strong>,” Recommendation ITU-T Y.2001,<br />
December 2004.<br />
“General principles and general reference model for Next<br />
Generation Networks,” Recommendation ITU-T Y.2011,<br />
October 2004.<br />
“Functional requirements and <strong>architecture</strong> of the <strong>NGN</strong>,”<br />
Recommendation ITU-T Y.2012, September 2006.<br />
“Requirements for the support of flow-state-aware transport<br />
technology in an <strong>NGN</strong>,” Recommendation ITU-T Y.2121,<br />
January 2008.
Bibliography II<br />
M. Carugi, B. Hirschman, and A. Narita, “Introduction to the<br />
ITU-T <strong>NGN</strong> focus group release 1: target environment,<br />
services, and capabilities,” Communications Magazine, IEEE,<br />
vol. 43, pp. 42–48, October 2005.<br />
J. Cochennec, “Activities on next-generation networks under<br />
Global Information Infrastructure in ITU-T,” IEEE<br />
Communications Magazine, vol. 40, pp. 98–101, July 2002.<br />
K. Knightson, N. Morita, and T. Towle, “<strong>NGN</strong> <strong>architecture</strong>:<br />
generic principles, functional <strong>architecture</strong>, and<br />
implementation,” IEEE Communications Magazine, vol. 43,<br />
pp. 49–56, October 2005.
Bibliography III<br />
C. Lee and D. Knight, “Realization of the Next-Generation<br />
Network,” IEEE Communications Magazine, vol. 43, pp.<br />
34–41, October 2005.<br />
J. Song, M. Y. Chang, S. S. Lee, and J. Joung, “Overview of<br />
ITU-T <strong>NGN</strong> QoS Control,” Communications Magazine, IEEE,<br />
vol. 45, pp. 116–123, September 2007.
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