Download NGN architecture

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