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JOINT ITU-T SG13 - IEEE NGSON WORKSHOP ON OVERLAY NETWORKING (Geneva, 15 May 2009). Status of NGN architecture related studies in ITU-T SG13. Olivier Le Grand WP 3/13 chairman France Telecom. Separation of services from transport in NGN (Rec. Y.2011). - PowerPoint PPT Presentation
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Geneva, 15 May 2009
Status of NGN architecture related studies in ITU-T SG13
Olivier Le GrandWP 3/13 chairman
France Telecom
JOINT ITU-T SG13 - IEEE NGSON WORKSHOP ON OVERLAY NETWORKING
(Geneva, 15 May 2009)
Geneva, 15 May 2009 2
Separation of services from transport in NGN (Rec. Y.2011)
2
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 CL-PS layer technologies
"NGN service stratum" vs "NGN transport stratum" Each stratum comprises one or more layers, where each layer is conceptually composed of a data (or user) plane, a control plane, and a management plane
Geneva, 15 May 2009 3
NGN architecture overview (Rec Y.2012)
Transport stratum
Service stratum
ControlMedia
Man
agem
ent F
unct
ions
Management
ANI
Transport Control Functions
Resource and Admission
Control Functions
Network Attachment Control Functions
NNIUNI
Application Support Functions & Service Support Functions
Applications
Transport Functions
End-UserFunctions
OtherNetworks
Service ControlFunctions
Service UserProfiles
Transport User Profiles
Geneva, 15 May 2009 4
LegacyTerminals
Note: Gateway (GW) may exist in either Transport Stratum or End-User Functions.
*
LegacyTerminals
Transport Stratum
Service Stratum
End-UserFunctions
Application Functions
Core transport Functions
NGNTerminals
CustomerNetworks
Other N
etworks
Application Support Functions and Service Support Functions (ASF&SSF)
Core TransportFunctions
Other N
etworks
EdgeFunctions
Access Transport Functions
ServiceControl
Functions
Network Access
Attachment Functions
Network Attachment Control Functions
(NACF)
Access NetworkFunctions
Resource and AdmissionControl Functions
(RACF)User
ProfileFunctions
T. UserProfileFunctions
GWGW
Other NGN ServiceComponents
PSTN/ISDN EmulationService Component
IP Multimedia Component&PSTN/ISDN Simulation
IP MultimediaService Component
S. UserProfile
Functions
GWGW
Applications
Re-use and adaptation of 3GPP IMS to
provide multimedia services
(Rec Y.2021)
A unified IP network with improved security
and QoS(Rec Y.2111)
"Service delivery platform" making use
of NGN easily
Evolution scenario of PSTN
and short-term solution (Y.2031)
NGN functional components
Network attachment (Rec Y.2014)
Geneva, 15 May 2009 5
Functional Entities (ASF&SSF, Y.2012)
A-3: APL-SCM-FE*A-2: APL-GW-FE*
Applications
A-4: SS-FE
A-1: AS-FE*
App li ca t io n S upp ort
Fun c ti on s a nd Ser vi c e
Su pp or t Fu nc ti ons
ANI
S-1: S-CSC-FE S-4: SL-FES-15: GSC-FE
S-6: SAA-FE Servi ce C
o nt rol F
u ncti on s
S-14: MRB-FE
Note: * may include Authentication, Authorization, and Accounting
S-5: SUP-FE
A-S4A-S1 A-S2 A-S6A-S5A-S3
T-9: SG-FE
Tra nspo rt Pro cessingF
u nct ion s
End User Functions
A-U1 A-T1
UNI
S-13: MRC-FE
Geneva, 15 May 2009 6
"Open Service Environment functional architecture in NGN":
Based on OSE capabilities and functional components defined in Rec ITU-T Y.2234 Objectives: define the OSE functional architecture model
relationship/mapping with already defined Y.2012 ASF&SSF FEs
Ongoing work on ASF&SSF: Y.OSE-arch
Service Coordination
Service Discovery
Service Registration
Service Management
Service Composition
Service DevelopmentSupport
Interworking with Service Creation Environments
Policy Enforcement
Other ASF&SSF FEs
ANI
Applications
OSE
Geneva, 15 May 2009 7
NGN OSE functional positioning
Service Control Functions
OtherNetworks
ANI
UNI
Man
agem
ent F
unct
ions
Service UserProfiles
Applications
Resource and Admission
Control Functions
Network Attachment Control Functions
Transport User Profiles
Transport Control Functions
Transport Functions
End-userFunctions
Application Support Functions & Service Support Functions
NNI
Control except OSEMediaManagementControl for OSE
Service stratum
Transport stratum
Policy Enforcement
Service Discovery
ServiceRegistration
Service Development
Support
Service Composition
Service Coordination
Interworkingwith
ServiceCreation
Environment
ServiceManagement
OSE
Geneva, 15 May 2009 8
Overlay networking and NGNInputs referring to "Overlay networking" targeting different scenarios:
e.g. for supporting multicast (IPTV, Content Delivery), …
Scenarios, corresponding requirements and capabilities to be consolidated
Relationship to NGN functional architecture:Cases to be considered (on a per scenario basis):
Overlay to the IP layer but still part of NGN Transport stratumOverlay to the NGN Transport stratum, i.e. part of the NGN Service stratumOverlay to the NGN Service stratum, i.e. above the NGN
Functions to be supportedRelationship to existing NGN functions and functional entities to be assessed
Geneva, 15 May 2009 9
Conclusion
The NGN architecture is being enhanced in order to support Open Service Environment (OSE) capabilities as defined in Y.2234
Paving the way towards a possible NGN "Service Delivery Environment/Platform" architectureCollaboration with other SDOs such as OMA, OASIS, TMF,…
Use of "Overlay networking" techniques in NGN is being studied
Consolidation expected in terms of addressed scenarios, corresponding requirements and related architectural impacts
Note: See backup slides for information on NGN architecture related recommendations (approved or under development)
Geneva, 15 May 2009 1010
Back up slides
Geneva, 15 May 2009 11
ITU-T NGN architecture related Recommendations (Y Series)
11
Y.2001 General overview of NGN Y.2011 General principles and general reference model for Next
Generation Networks Y.2012 Functional requirements and architecture of the NGN Y.2014 Network attachment control functions in next generation
networks Y.2015 General requirements for ID/locator separation in NGN Y.2021 IMS for Next Generation Networks Y.2031 PSTN/ISDN emulation architecture Y.2111 Resource and admission control functions in Next Generation
Networks Y.2233 Requirements and framework allowing accounting and charging
capabilities in NGN Y.2234 Open service environment capabilities for NGN Y.1910 IPTV functional architecture
Geneva, 15 May 2009 12
ITU-T NGN architecture related Recommendations (Y series)
12
Y.2804 Generic framework of mobility management for NGN Y.2805 Framework of location management for NGN Y.2806 Framework of handover control for NGN Y.2901 The carrier grade open environment reference model Y.FRA2 Functional requirements and architecture of the NGN (version 2)
Y.MMCF Mobility management and control framework and architecture within the NGN transport stratum
Y.SMF Mobility management in service stratum for NGN Y.OSE-arch Open Service Environment Functional Architecture for NGN
Y.FMC-IMS Fixed mobile convergence with a common IMS session control domain
Y.FAid-loc-split
Functional architecture of Id-Loc-split in NGN
Y.CD&S Architectural configuration of Content Delivery and Storage in NGN
Geneva, 15 May 2009 13
Useful Links
ITUhttp://www.itu.int
NGN Global Standards Initiative (NGN-GSI) http://www.itu.int/ITU-T/ngn/index.html
SG 13 (Future Networks including mobile and NGN)
http://www.itu.int/ITU-T/studygroups/com13/index.asp
13
