1. Information Document 20-E ITU-T Study Group 2 March 2003 QUESTION:ALL SOURCE:TSB TITLE:NGN activities in ITU-T (by Y-H. Choe, Engineer, ITU-T SG4)

2. CONTENTS NGN activities NGN project plan NGN Aspects Total solution in ITU-T Conclusions

3. NGN Initial Considerations NGN difficult to define in terms of: specific technologies, specific architecture, Topology Identify high-level paradigms Separation of concerns, services from networks, Service Platform approach Identify emerging NGN-generic issues Architectural principles, OSI model relevance Need for NGN models to show separation of concerns via functional architectures Access/Core Separation Competitive Access to Services Access Network to include switching/routing Multiple transport technologies, Ethernet, ATM, IP, MPLS in various combinations Global Roaming (fixed and wireless networks)

4. NGN Service concept Communicating Digital Camera Communicating Coffee-maker IP Clock-radio (Stan Moyer, Telcordia) IP Lighbulb (Vint Cerf, MCI) Digital Car IP Radio/TV/ Audio Player Virtual vision in ordinary prescription eyeglasses Internet (NGI) AC IP Engine monitoring, toll collection Maps, directions, Internet radio, engine software upgrades IP Telephone Toys Games Musical instruments

5. IntServIPDiffServMPLS Internet QoS / Required to large Bandwidth SONET/SDHDWDM Survivability & Network optimization IP/DiffServ/GMPLS over DWDM Differentiated Optical QoS Service Framework NGN Backbone N.K. technology

6. ITU-T NGN activities SG2 (Operational aspects of service provision, networks and performance, including numbering, naming, and addressing) SG 4 (Network Management including TMN) SG 11 (Signaling requirements and protocols) SG 12 (End-to-end transmission performance of networks and terminals, QoS) SG 13 (Multi-protocol and IP-based networks and their internetworking) SG 15 (Optical and other transport networks) SG16 (Multimedia services, systems and terminals) SG 17 (Data Networks and Telecommunication Software) SSG ("IMT-2000 and Beyond and for mobility)

7. NGN project plan The concept of a NGN has been introduced to take account the new situation in telecoms, characterized by a lot of factors : it aims at open competition between operators due to the total deregulation of markets, explosion of digital traffic, e.g. due to the increasing use of internet, increasing demand from users for new multimedia services, increasing demand from users for a general mobility, etc.. major goal is to facilitate convergence of networks and services.

8. Basic characteristics of NGN Packet-based transfer, Separation of control functions Decoupling of service provision Support for a wide range of services Broadband capabilities Interworking with legacy networks Generalized mobility Unfettered access

9. ITU-T Study areas on NGN General framework models Functional architecture models End-to-end Quality of Service (QoS) Service platforms (APIs) Network management Security Mobility

10. General framework models General architectural principles This will provide a basis for NGN. The technical objective will be to develop a functional methodology and general model Functional architecture methodology model will provide guidelines on how to define a functional architecture for NGN

11. Functional architecture models Use of generic RM techniques, Definition of interworking functions, Determination of how end-to-end service, call control and user mobility can be supported across heterogeneous networks, Definition of functionality of NGN-aware terminals, In terms of software upgrade mechanisms Redundancy and evolution of cost-reduced terminals Version negotiation and management

12. Overall functional architecture model for NGN I. Management Control Fulfilment AssuranceBilling Invocation Transport Functional groupings Resources Applicative, Middleware, Baseware svc.s Customer Operations Processes

13. End-to-end Quality of Service (QoS) To handle both the way in which different end system can reach agreement ; on the end-to-end QoS for a call how the parameters set with this upper layer protocol can be used to control the lower layer transport and access level QoS mechanisms. For the issue of upper layer QoS control; a distinction can be made between telephony the wider topic of QoS for multimedia Likewise the control of lower layer QoS mechanisms is best divided into two topics: vertical protocol linking the upper and lower layer QoS mechanisms (diffserv, etc) lower layer horizontal mechanism to link the lower layer QoS control between different domains and networks.

14. Control Mechanism for QoS DWDM based NGN QoS provision DWDM based NGN QoS provision

15. Service platforms(APIs) NGN work on service platforms(API) should concentrate on: Definition of service control architectures covering both OSA APIs and proxy aspects; Enhancement of mechanisms to support provision of services across multiple networks covering both service roaming and interconnectivity of services; Development of mechanisms to support user presence and user control of service customisation and profiles; Impact of user mobility on service platforms.

16. Enhancement core network management architecture definition of basic network management services and interfaces Development common TMN working methods TMN to TMN interoperation using X-interface Information models for Optical Transport Network (OTN) management for NGN Inclusion and application of new architectural concepts and new technologies such as tML. Network management

17. MPLS Gateway Networking Solution implicat.s. Multiservice Access Networks Core Network L3 VPN and other IP services ATM FR Ethernet ATM FR Ethernet L2/L3 VPN services Traditional L2 services L3 VPN and other IP services L2/L3 VPN services Traditional L2 services MPLS Core IP Routing L2 Access Networks IP-based Networks IP Routing L2 Access Networks End-to-end SPVC/SVCs IWF PNNI Networking Stacked LSPs MPLS Gateway PNNI IWF CR-LDP/RSVP-TE IP-based Networks

18. OAM & Fault Management ATM Network A ATM Network B LSP tunnel IWF = Possible trouble location I.610Y.1711Y.iw OSF/TMNSNMP ? Q3, M3

19. Security Key Production Key Management Authentication Need to further develop authentication Global certification on security products/solutions provision of support for the transition from a traditional network environment to IP-based networks

20. Mobility NGN wireless network and terminal configurability, including the adaptation of resource allocation, Integration of fixed/mobile/broadcasting networks and rules for distribution and decentralized control of functional entities, Protocols that permit the network to adapt dynamically to changing channel conditions/Hand-over Global Roaming, Congestion-control algorithms,

21. Total Solution in ITU-T Perfect Environment and Universal Functionality Optical and Transport Network Security QoS, Data network and Telecommunication Software Network Management Signaling and protocols Mobility Language and Tools Multi protocol and IP-based network Operational aspects, Service provision and Performance Electro-magnetic environment Multimedia

22. CONCLUSIONS NGN is the most expected near future network First Recommendation is expected 2004 Will combine Fixed network and Wireless network Makes come true to Mobile computing Environment ITU-T is the most perfect org. to NGN Bring your business/requirements and make it Universal Recommendation Please visit : http://www.itu.inthttp://www.itu.int