Post on 09-Mar-2018
Next Generation Networksarchitecture by ITU-T
Robert Wojcik
Department of Telecommunications
21st January 2009, Krakow, 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-efforttraffic
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, July2003
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, July2003
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, July2003
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 ITUresponsibility
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 ITUresponsibility
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 Y.100-Y.899INTERNET PROTOCOL ASPECTS Y.1000-Y.1899NEXT GENERATION NETWORKS Y.2000-Y.2899Frameworks and functional architecture models Y.2000-Y.2099Quality of Service and performance Y.2100-Y.2199Service aspects: Service capabilities and service architecture Y.2200-Y.2249Service aspects: Interoperability of services and networks in NGN Y.2250-Y.2299Numbering, naming and addressing Y.2300-Y.2399Network management Y.2400-Y.2499Network control architectures and protocols Y.2500-Y.2599Security Y.2700-Y.2799Generalized mobility Y.2800-Y.2899
Related documents
ITU-T Recommendation Y.2001, “General overview ofNGN”, 12/2004
ITU-T Recommendation Y.2011, “General principles andgeneral reference model for Next Generation Networks”,10/2004
ITU-T Recommendation Y.2012, “Functional requirementsand architecture of the NGN”, 09/2006
ITU-T Recommendation Y.2121, “Requirements for thesupport of flow-state-aware transport technology in NGN”
Areas of key importance in NGNIdentified 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
DefinitionITU-T Rec. Y.2001 (12/2004)
Next Generation Networks (NGN)
A packet-based network able to provide telecommunication servicesand able to make use of multiple broadband, QoS-enabledtransport technologies and in which service-related functions areindependent from underlying transport-related technologies. Itenables unfettered access for users to networks and to competingservice providers and/or services of their choice. It supportsgeneralized mobility which will allow consistent and ubiquitousprovision of services to users.
DefinitionITU-T Rec. Y.2001 (12/2004)
Next Generation Networks (NGN)
A packet-based network able to provide telecommunication servicesand able to make use of multiple broadband, QoS-enabledtransport technologies and in which service-related functions areindependent from underlying transport-related technologies. Itenables unfettered access for users to networks and to competingservice providers and/or services of their choice. It supportsgeneralized mobility which will allow consistent and ubiquitousprovision of services to users.
DefinitionITU-T Rec. Y.2001 (12/2004)
Next Generation Networks (NGN)
A packet-based network able to provide telecommunication servicesand able to make use of multiple broadband, QoS-enabledtransport technologies and in which service-related functions areindependent from underlying transport-related technologies. Itenables unfettered access for users to networks and to competingservice providers and/or services of their choice. It supportsgeneralized mobility which will allow consistent and ubiquitousprovision of services to users.
DefinitionITU-T Rec. Y.2001 (12/2004)
Next Generation Networks (NGN)
A packet-based network able to provide telecommunication servicesand able to make use of multiple broadband, QoS-enabledtransport technologies and in which service-related functions areindependent from underlying transport-related technologies. Itenables unfettered access for users to networks and to competingservice providers and/or services of their choice. It supportsgeneralized mobility which will allow consistent and ubiquitousprovision of services to users.
DefinitionITU-T Rec. Y.2001 (12/2004)
Next Generation Networks (NGN)
A packet-based network able to provide telecommunication servicesand able to make use of multiple broadband, QoS-enabledtransport technologies and in which service-related functions areindependent from underlying transport-related technologies. Itenables unfettered access for users to networks and to competingservice providers and/or services of their choice. It supportsgeneralized mobility which will allow consistent and ubiquitousprovision of services to users.
DefinitionITU-T Rec. Y.2001 (12/2004)
Next Generation Networks (NGN)
A packet-based network able to provide telecommunication servicesand able to make use of multiple broadband, QoS-enabledtransport technologies and in which service-related functions areindependent from underlying transport-related technologies. Itenables unfettered access for users to networks and to competingservice providers and/or services of their choice. It supportsgeneralized mobility which will allow consistent and ubiquitousprovision of services to users.
Objectives of ITU-T NGNEconomic aspects
promote fair competition
encourage private investment
define a framework for architecture and capabilities to be ableto meet various regulatory requirements
provide open access to networks
Objectives of ITU-T NGNEconomic aspects
promote fair competition
encourage private investment
define a framework for architecture and capabilities to be ableto meet various regulatory requirements
provide open access to networks
Objectives of ITU-T NGNEconomic aspects
promote fair competition
encourage private investment
define a framework for architecture and capabilities to be ableto meet various regulatory requirements
provide open access to networks
Objectives of ITU-T NGNEconomic aspects
promote fair competition
encourage private investment
define a framework for architecture and capabilities to be ableto meet various regulatory requirements
provide open access to networks
Objectives of ITU-T NGNSocial aspects
ensuring universal provision and access to services
promoting equality of opportunity to the citizen
promoting diversity of content, including cultural andlinguistic diversity
recognizing the necessity of worldwide cooperation withparticular attention to less developed countries
Objectives of ITU-T NGNSocial aspects
ensuring universal provision and access to services
promoting equality of opportunity to the citizen
promoting diversity of content, including cultural andlinguistic diversity
recognizing the necessity of worldwide cooperation withparticular attention to less developed countries
Objectives of ITU-T NGNSocial aspects
ensuring universal provision and access to services
promoting equality of opportunity to the citizen
promoting diversity of content, including cultural andlinguistic diversity
recognizing the necessity of worldwide cooperation withparticular attention to less developed countries
Objectives of ITU-T NGNSocial aspects
ensuring universal provision and access to services
promoting equality of opportunity to the citizen
promoting diversity of content, including cultural andlinguistic diversity
recognizing the necessity of worldwide cooperation withparticular attention to less developed countries
Outline
1 The beginnings
2 The definition
3 Fundamental characteristics of NGN
4 NGN architecture
Fundamental characteristics of NGNThe 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 underlyingtransport technologies
support of multiple last-mile technologies
Fundamental characteristics of NGNThe 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 underlyingtransport technologies
support of multiple last-mile technologies
Fundamental characteristics of NGNDecoupling of service provision from transport, Y.2011
NGN transport
NGN services
e.g., voice telephony services (audio, fax, etc.)
e.g., Data services (WWW, e-mail, etc.)
e.g., Video services (TV, movie, etc.)
CO-CS, CO-PS and CLPS layer technologies
Fundamental characteristics of NGNThe 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 underlyingtransport technologies
support of multiple last-mile technologies
Fundamental characteristics of NGNThe 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 underlyingtransport technologies
support of multiple last-mile technologies
Fundamental characteristics of NGNEnd-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 NGNThe 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 underlyingtransport technologies
support of multiple last-mile technologies
Fundamental characteristics of NGNGeneralized mobility
Generalized mobility
The ability for the user or other mobile entities to communicateand access services irrespective of changes of location ortechnical environment. The degree of service availability maydepend on several factors including Access Network capabilities,service level agreements between the user’s home network and thevisited network (if applicable), etc. Mobility includes the ability oftelecommunication with or without service continuity.
Fundamental characteristics of NGNGeneralized mobility, Y.2012
Home Core NGN-1
User-1
Visited Access
Home Core NGN-2
User-2
Fundamental characteristics of NGNGeneralized mobility, Y.2012
Visited Core NGN
User-1
Visited Access
Home Core NGN-1
Fundamental characteristics of NGNThe 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 underlyingtransport technologies
support of multiple last-mile technologies
Fundamental characteristics of NGNInterworking with legacy networks via open interfaces
NGN
Other NGNs ……
IWF IWF
Internet
IWF
PSTN
IWFPLMN
IWF
Fundamental characteristics of NGNThe 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 underlyingtransport technologies
support of multiple last-mile technologies
Fundamental characteristics of NGNThe 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 underlyingtransport technologies
support of multiple last-mile technologies
Fundamental characteristics of NGNThe 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 underlyingtransport technologies
support of multiple last-mile technologies
Fundamental characteristics of NGNThe 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 underlyingtransport technologies
support of multiple last-mile technologies
Fundamental characteristic summaryC. Lee and D. Knight, “Realization of the Next-GenerationNetwork”
SP3 SPmSP2
Videoservicesnetwork
xDSL/optic based fixed-mobileUser
ANP 1 (DSL)
Access networkprovider domain
ANP 2 (DSL)
ANP 3 (Opt)
ANP N (cable)
CNP1 CNP
2
CNP3
SP1
Service/applicationprovider domain
Core networkprovider domain
New policy regulationenvironment (horizontal)
Videoservices
(TV,movie,etc.)
Telephoneservicesnetwork
Telephoneservices
Pre-NGN
Dataservicesnetwork
Dataservices(www,email,etc.)
Resource-based pol./reg.
Service-based policy/regulation
Voice Internet Video MMPol.reg.
Pol. XReg. x
IP (future packet ?) platform
New businessenvironment (compositional)
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”
Transport functions
Service userprofiles
Application functions
ANI
Servicescontrol
Service stratum
Transport stratum
UNI
End-userfunctions
Othernetworks
Man
agem
ent
func
tion
s
Third party application providers
NNI
Transport userprofiles
Service controlfunctions
Networkattachment
control functions
Accessfunctions
Access transportfunctions
Edgefunctions
ControlMediaManagement
Gatewayfunctions
Resource andadmission
control functions
Transport control functions
Media handlingfunctions
Core transportfunctions
Bibliography I
“General overview of NGN,” Recommendation ITU-T Y.2001,December 2004.
“General principles and general reference model for NextGeneration 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 transporttechnology in an NGN,” Recommendation ITU-T Y.2121,January 2008.
Bibliography II
M. Carugi, B. Hirschman, and A. Narita, “Introduction to theITU-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 underGlobal Information Infrastructure in ITU-T,” IEEECommunications Magazine, vol. 40, pp. 98–101, July 2002.
K. Knightson, N. Morita, and T. Towle, “NGN architecture:generic principles, functional architecture, andimplementation,” IEEE Communications Magazine, vol. 43,pp. 49–56, October 2005.
Bibliography III
C. Lee and D. Knight, “Realization of the Next-GenerationNetwork,” IEEE Communications Magazine, vol. 43, pp.34–41, October 2005.
J. Song, M. Y. Chang, S. S. Lee, and J. Joung, “Overview ofITU-T NGN QoS Control,” Communications Magazine, IEEE,vol. 45, pp. 116–123, September 2007.
Thank you for yourattention!