FORUM ON NEXT GENERATION STANDARDIZATION
(Colombo, Sri Lanka, 7-10 April 2009)
Dr. Ghassem Koleyni
Colombo, Sri Lanka, 7-10 April 2009

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Home
Network
Access
Network
Core Network
Access
Network
Home
Network
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IP: Mid to late 1970’s (No QoS guaranteed)
Ethernet: 1973-1975 at Xerox
ISDN: Mid to late 1980’s (QoS guaranteed while increasing the bandwidth, many new services )
X.25: Mid to late 1980’s (transmission of data without loss nor duplication)
FR: Mid to late 1980’s (QoS guaranteed while increasing the bandwidth)
ATM: Early 1990’s (guaranteed QoS, increased bandwidth, combined switching and transport capability with high level of performance and scalability)
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Voice
Services
Data
Services
Video
Services
Voice
Services
Network
Data
Services
Network
Video
Services
Network
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Reduced expenses
Fewer core switches and transit exchanges
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Reduced CAPEX & OPEX
Faster return on investment
Increased network efficiency and utilisation
Reduced deployment time
Fast and open service creation platform
One-stop shop for billing
A set of management functions shared between different services
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Open services architecture
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Interoperable networks
Standardized interfaces and protocols
Faster service deployment
Multimedia services support
Guaranteed QoS and QoS differentiation
Access agnostic (copper, cable, fibre, wireless)
Service continuity between fixed and mobile
Terminal portability
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Increased bandwidth availability
Secure, reliable and simple (ease of use)
Affordable
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Services
switched
Packetswitched
Telephone services
Multimedia services
Transmission TDM based SDH, PDH, etc.
Interfaces Proprietary Standardized
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Chronology of NGN Standardization in
ITU-T
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First workshop on NGN in ITU-T convened in
Geneva, 9-10 July 2003
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Meeting convened with cooperation from SGs
11, 13, 16 and SSG (predecessor to SG 19)
Presentations from different interest groups
SG 13 was tasked to lead study group on NGN
First JRG-NGN meeting, 29 September to 2
October 2003
Four draft Recommendations were generated
NGN Focus Group was formed in May 2004
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Study Group 13 (NGN SG) established by
WTSA-04 as the lead SG for NGN studies
NGN-GSI started in 2006 and is continuing
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A packet-based network able to provide telecommunication services and able to make use of multiple broadband , QoS-enabled transport technologies and in which servicerelated 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.
Source: ITU-T RecommendationY.2001
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Packet-based transfer
Separation of control functions among bearer capabilities, call/session, and application/service
Decoupling of service provision from transport, and provision of open interfaces
Support for a wide range of services, applications and mechanisms based on service building blocks (including real time/streaming/non-real time services and multi-media)
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Broadband capabilities with end-to-end
QoS and transparency
Interworking with legacy networks via open interfaces
Generalised mobility
Unfettered access by users to different service providers
A variety of identification schemes which can be resolved to IP addresses for the purposes of routing in IP networks
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Unified service characteristics for the same service as perceived by the user
Converged services between Fixed and
Mobile networks
Independence of service-related functions from underlying transport technologies
Support of multiple last mile technologies
Compliant with all Regulatory requirements, for example concerning emergency communications and security/privacy
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In Brief
NGN, a single network providing services agnostic to the underlying transmission technologies and through different access networks
• Simplicity
• Increased productivity
• Increase customer satisfaction
• Increased revenue
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Management plane
Control
User plane
NGN Services Stratum
Management plane
Control
User plane
NGN Transport Stratum
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Separation of Services from Transport in
NGN 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
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Infrastructural, application, middleware and baseware services
Services
NGN
Service
Service management functions
Resources
Service control functions
Transport management functions
Transport control functions
NGN
Transport
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Transfer functional area
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Application Support Functions & Service Support Functions
Service User
Profiles
Service stratum
Service Control
Functions
Transport User
Profiles
Network
Attachment
Control Functions
Resource and
Admission
Control Functions
Transport Control Functions
End-User
Functions
UNI
Transport stratum
Transport Functions
Management
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Media Control
Other
Networks
NNI
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Migration of
Service Intelligence
User Access Core
Access User
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Transport
Signalling and control
Management
Services
Bearer services
Supplementary services
Operation, administration and maintenance
(OAM)
Naming, numbering and addressing
Accounting, charging and billing
Inter-working
National regulations
Emergency telecommunications
Security aspects
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Call Server
Cable, IAD, xDSL
Private Lines
Wireless
Packet
Switched
Network signalling
PABX
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ISDN
AN
PSTN
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IMS
Packet
Switched
Network
Other networks signalling
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Other networks
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PSTN/ISDN Emulation & Simulation
Provides PSTN/ISDN service capabilities and interfaces using adaptation to an IP infrastructure.
Provides PSTN/ISDN-like service capabilities using session control over
IP interfaces and infrastructure.
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Emulation, Simulation, Interoperability and
Interworking with NGN
User
Equipment
NGN
(Carrier Y) PLMN
NNI
UNI
UNI
NGN
(Carrier X)
UNI
UNI
PSTN/ISDN
NNI
Public IP
NETWORK
User
Equipment
User
Equipment
SIMULATION
EMULATION
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Transition cost
Business model
Customer expectation
Are customers ready for changes?
If higher expenses are involved, are customerst ready to pay?
Choice of technology
Products and services to be offered
Domestic regulations
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NGN Recommendations, Y Series
Frameworks and functional architecture models
Quality of Service and performance
Y.2000–Y.2099
Y.2100–Y.2199
Service aspects: Service capabilities and service architecture
Service aspects: Interoperability of services and networks in NGN
Numbering, naming and addressing
Y.2200–Y.2249
Y.2250–Y.2299
Y.2300–Y.2399
Network management Y.2400–Y.2499
Network control architectures and protocols Y.2500–Y.2599
Y.2700–Y.2799
Security
Generalized mobility
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Y.2800–Y.2899
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General Q.3000–Q.3029
Q.3030–Q.3099
Network signalling and control functional architecture
Network data organization within the NGN
Bearer control signalling
Signalling and control requirements and protocols to support attachment in NGN environments
Resource control protocols
Service and session control protocols
Service and session control protocols – supplementary services
NGN applications
Testing for NGN networks
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Q.3100–Q.3129
Q.3130–Q.3179
Q.3200–Q.3249
Q.3300–Q.3369
Q.3400–Q.3499
Q.3600–Q.3649
Q.3700–Q.3849
Q.3900–Q.3999
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Substantial progress has been made in the preparation of specifications addressing evolution of networks to NGN
Good progress on signalling and protocol work
More work needs to be done, specifically on the OAM, management and control & signalling aspects
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ADF
AG
AN
ANI
ATM
Adaptation Function
Access Gateway
Access Network
Interface
Mode
CAPEX CAPital EXpenditure
CO-PS connection-oriented
CLPS
CS
DSL
DTE
FR
IAD
IMS
IP switched packet- switched switched
Call Server
Digital Subscriber Line
Data Terminal Equipment
Frame Relay
Integrated Access Device
IP Multimedia Sub-system
Internet Protocol
ISDN Integrated Services Digital
IWF
LE
NGN
NNI
Network
Inter-working Function
Local Exchange
Next Generation Network
Network Network Interface
Colmbo, Sri Lanka, 7-10 April 2009
SG
SIP
TDM
TE
TMG
TV
UAM
UNI
OAM Operation, Administration,
Maintenance
OPEX OPerating EXpenditure
PABX Private Automatic Branch
PBX
PDH eXchange
Private Branch eXchange
Plesiochronous Digital
Hierarchy
PLMN Public Land Mobile Network
PSPDN Packet Switched Public Data
Network
PSTN Public Switched Telephone
QoS
REV
SDH
Network
Quality of Service
Reverse Charging
Synchronous Digital
Hierarchy
Signalling Gateway
Session Initiation Protocol
Time Division Multiplexing
Transit Exchange
Trunking Media Gateway
Television
User Access Module
User-Network Interface
WWW World Wide Web
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Email:
Tel: +1 613 592 5344
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ITU-T NGN Related Recommendations (Q Series)
Q.3030
Q.3150
Q.3151
Q.3201
Signalling architecture for the NGN service control plane
Use of virtual trunks for ATM/MPLS client/server control plane interworking
ATM and frame relay/MPLS control plane interworking: Clientserver
EAP-based security signalling protocol architecture for network attachments
Q.3201.1
Authentication protocols based on EAP-AKA for interworking among 3GPP, WiMax, and WLAN in NGN
Q.3300
Architectural framework for the Q.33xx series of
Recommendations
Q.3301.1 Resource control protocol - Protocol at the Rs interface
Q.3302.1 Resource control protocol - Protocol at the Rp interface
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ITU-T NGN Related Recommendations (Q Series)
Q.3303.0
Protocol at the interface between a Policy Decision Physical Entity
(PD-PE) and a Policy Enforcement Physical Entity (PE-PE) (Rw interface): Overview
Q.3303.1 Protocol at the interface between a Policy Decision Physical Entity
(PD-PE) and a Policy Enforcement Physical Entity (PE-PE): COPS
Alternative
Q.3303.2 Protocol at the interface between a Policy Decision Physical Entity
(PD-PE) and a Policy Enforcement Physical Entity (PE-PE) (Rw interface): H.248 Alternative
Q.3303.3 Protocol at the interface between the policy decision physical entity
(PD-PE) and the policy enforcement physical entity (PE-PE) (Rw interface): Diameter
Q.3304.1
Resource control protocol no. 4 (rcp4). Protocol at the interface between a transport resource control physical entity (TRC-PE) and a transport physical entity (T-PE) (Rc interface): COPS alternative
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ITU-T NGN Related Recommendations (Q Series )
Q.3304.2
Resource control protocol no. 4 SNMP Profile. Protocol at the Rc interface between a transport resource control physical entity
(TRC-PE) and a transport physical entity (T-PE) (Rc interface)
Q.3305.1
Resource control protocol - Protocol at the Rt interface
Q.3401
NGN NNI signalling profile
Q.3402
Q.3900
NGN UNI signalling profile (Protocol set 1)
Methods of testing and model network architecture for NGN technical means testing as applied to public telecommunication networks
Q.3901
Distribution of tests and services for NGN technical means testing in the model and operator networks
Q.3902
Parameters to be monitored in the process of operation when implementing NGN technical means in public telecommunication networks
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ITU-T NGN Related Recommendations (Y Series)
Y.2015
Y.2021
Y.2031
Y.2051
Y.2052
Y.2053
Y.2054
Y.2091
Y.2111
Y.2001
Y.2011
Y.2012
Y.2014
General overview of NGN
General principles and general reference model for Next
Generation Networks
Functional requirements and architecture of the NGN
Network attachment control functions in next generation networks
General requirements for ID/locator separation in NGN
IMS for Next Generation Networks
PSTN/ISDN emulation architecture
General overview of IPv6-based NGN
Framework of multi-homing in IPv6-based NGN
Functional requirements for IPv6 migration in NGN
Framework to support signalling for IPv6-based NGN
Terms and definitions for Next Generation Networks
Resource and admission control functions in Next
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ITU-T NGN Related Recommendations (Y Series)
Y.2112
A QoS control architecture for Ethernet-based IP access network
Y.2113
Ethernet QoS control for next generation networks
Y.2121
Requirements for the support of flow state aware transport technology in an NGN
Y.2171
Admission control priority levels in Next Generation Networks
Y.2172
Service restoration priority levels in Next Generation Networks
Y.2173
Management of performance measurement for NGN
Y.2174
Distributed RACF architecture for MPLS networks
Y.2201
NGN release 1 requirements
Y.2211
IMS-based real time conversational multimedia services over NGN
Y.2212
Requirements of managed delivery services
Y.2213
NGN service requirements and capabilities for network aspects of applications and services using tag-based identification
Y.2232
NGN convergence service model and scenario using Web Services
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ITU-T NGN Related Recommendations (Y Series)
Y.2233
Requirements and framework allowing accounting and charging capabilities in NGN
Y.2234
Open service environment capabilities for NGN
Y.2235
Converged web-browsing service scenarios in NGN
Y.2261
PSTN/ISDN evolution to NGN
Y.2262
PSTN/ISDN emulation and simulation
Y.2271
Call server based PSTN/ISDN emulation
Y.2401
Principles for the Management of the Next Generation Networks
Y.2601
Fundamental characteristics and requirements of future packet based networks
Y.2611
High level architecture of future packet based networks
Y.2701
Security requirements for NGN release 1
Y.2801
Mobility management requirements for NGN
Y.2802
Fixed-mobile convergence general requirements
Y.2803
FMC service using legacy PSTN or ISDN as the fixed access network for mobile network users
Y.2804
Generic framework of mobility management for next generation
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ITU http://www.itu.int
NGN Global Standards Initiative (NGN-GSI) http://www.itu.int/ITU-T/ngn/index.html
SG11 (Signalling & Control Protocols) http://www.itu.int/ITU-
T/studygroups/com11/index.asp
SG 13 (Future Networks and NGN) http://www.itu.int/ITU-
T/studygroups/com13/index.asp
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