1. 10/09/2015 NGN related Standardization Issues (Architecture and Protocol) Chae-Sub, LEE TTA 1GSC-9, Seoul SOURCE:TTA TITLE:NGN for Global Generation (Architecture and Protocol) AGENDA ITEM:5.1 CONTACT:Chae-Sub, LEE, +8216 93200270, jaeseop@kt.co.kr GSC9/GTSC-010 DOCUMENT FOR: Decision DiscussionX Information

2. GSC-9, Seoul Contents 1.Definition and Objective of NGN 2.Features of NGN 3.Architectural views of NGN 4.Protocol views of NGN 5.Discussion

3. GSC-9, Seoul310/09/2015 1. Definition and Objective of NGN A Next Generation Network (NGN) is a packet-based network able to provide services including 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 offers unrestricted access by users to different service providers. It supports generalized mobility which will allow consistent and ubiquitous provision of services to users. A Next Generation Network (NGN) is a packet-based network able to provide services including 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 offers unrestricted access by users to different service providers. It supports generalized mobility which will allow consistent and ubiquitous provision of services to users. To promote fair competition; To encourage private investment; To define a framework for architecture and capabilities to be able to meet various regulatory requirements; To provide open access to networks, To promote fair competition; To encourage private investment; To define a framework for architecture and capabilities to be able to meet various regulatory requirements; To provide open access to networks, Objective

4. GSC-9, Seoul410/09/2015 2. Features of NGN Packet-based transfer Separation of control functions among bearer capabilities, call/session, and application/ service Decoupling of service provision from network, and provision of open interfaces Support for a wide range of services, applications and mechanisms based on service building blocks (incl. real time/ streaming/ non-real time services & MM) Broadband capabilities with end-to-end QoS and transparency Interworking with legacy networks via open interfaces Generalized mobility Unrestricted 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 Unified service characteristics for the same service as perceived by the user Converged services between Fixed/Mobile Independence of service-related functions from underlying transport technologies Compliant with all Regulatory requirements, for example concerning emergency communications and security/privacy, etc. Packet-based transfer Separation of control functions among bearer capabilities, call/session, and application/ service Decoupling of service provision from network, and provision of open interfaces Support for a wide range of services, applications and mechanisms based on service building blocks (incl. real time/ streaming/ non-real time services & MM) Broadband capabilities with end-to-end QoS and transparency Interworking with legacy networks via open interfaces Generalized mobility Unrestricted 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 Unified service characteristics for the same service as perceived by the user Converged services between Fixed/Mobile Independence of service-related functions from underlying transport technologies Compliant with all Regulatory requirements, for example concerning emergency communications and security/privacy, etc.

5. GSC-9, Seoul510/09/2015 3. Architectural views of NGN Effect of IP into NGN Architecture Break of Vertical Integrated Architecture Horizontal Binding Architecture

6. GSC-9, Seoul Application Server Application Server Switched Core Packet Network(s) Switched Access Network(s) Transport Protocol Interworking Switched Access Network(s) Transport Protocol Interworking Single point Or Distributed Application Users Separation of Services from Network

7. GSC-9, Seoul Edge Service Node QoS aware core Best Effort Core Edge Service Node Fix/Mob. Acc. Net. Fix./Mob. Acc. Net. Re-Distribution of Service Intelligence : QoS, User Convenience etc. QoS aware Service Provision

8. GSC-9, Seoul The separation facilitates the unbundling of services and facilities (in both access and core). Each vertical stratum of NGN has its own horizontal architecture. The location of service platforms is not restricted. Telecom industry will bifurcate to reflect the new NGN architecture. NGN architecture will facilitate competition and innovation among service providers. Service intelligence will migrate to the edges. Telephone service will not follow the traditional centrex, local or long distance approaches. Policy frameworks designed for vertically-integrated networks are not transferable to a horizontally-integrated NGN. In an NGN, two separate policy frameworks are required: - one applicable to transport networks, and - another applicable to content-based services The separation facilitates the unbundling of services and facilities (in both access and core). Each vertical stratum of NGN has its own horizontal architecture. The location of service platforms is not restricted. Telecom industry will bifurcate to reflect the new NGN architecture. NGN architecture will facilitate competition and innovation among service providers. Service intelligence will migrate to the edges. Telephone service will not follow the traditional centrex, local or long distance approaches. Policy frameworks designed for vertically-integrated networks are not transferable to a horizontally-integrated NGN. In an NGN, two separate policy frameworks are required: - one applicable to transport networks, and - another applicable to content-based services Impacts and Effects of NGN on Service Provision

9. GSC-9, Seoul910/09/2015 4. Protocol views of NGN Principles of Protocol Relationship

10. GSC-9, Seoul IP Applications Application Helpers (UDP, TCP, RTP, etc) Non-IP Services MPLS or shimEthernet Optical Bit Transport (Optional) LAN or MAN Simplified Protocol Model of NGN Current protocol standards activity mainly focus on two aspects - one is how to use IP layer economically - the other is how to support IP layer efficiently Current protocol standards activity mainly focus on two aspects - one is how to use IP layer economically - the other is how to support IP layer efficiently

11. GSC-9, Seoul Broadband Protocol Model of Today DSL Systems Protocol ModelCable Systems Protocol Model

12. GSC-9, Seoul One of possible Fixed-Mobile Broadband Protocol Standards 802.16 Physical Layer Transmission Convergence Privacy MAC IP Convergence ATM Convergence Ethernet Convergence Variable diversity in usage of Physical Medium Convergence always request at the entrance of Networks and Services End-End Protocol could be globalize Variable diversity in usage of Physical Medium Convergence always request at the entrance of Networks and Services End-End Protocol could be globalize

13. GSC-9, Seoul 5. Discussion Key Mission of NGN Provide QoS aware services to End-End (any-where, any-time, any-device) Provide Convergence : Fixed-Mobile, Telecom-Broadcasting etc. Happy Business Model for Everyone : Balance btw. Growth and Share Provide QoS aware services to End-End (any-where, any-time, any-device) Provide Convergence : Fixed-Mobile, Telecom-Broadcasting etc. Happy Business Model for Everyone : Balance btw. Growth and Share Questions after NGN Still Free charge / Fixed Rate / Free Riding…? Still everybody use same quality services ? Still I am only belong to public or I get my own private ? Still separated subscription for Fixed and Mobile services ? Still use separated Terminals for Fixed and Mobile ? Still access separated contents for Fixed and Mobile ? Still dominant operator control most of ? Still Free charge / Fixed Rate / Free Riding…? Still everybody use same quality services ? Still I am only belong to public or I get my own private ? Still separated subscription for Fixed and Mobile services ? Still use separated Terminals for Fixed and Mobile ? Still access separated contents for Fixed and Mobile ? Still dominant operator control most of ? Ways to protect further difficulties Need Global Standard Collaboration Common Vision, Common Requirements, Common Business Model Common Architecture and Common Protocols are basic to start Need Global Standard Collaboration Common Vision, Common Requirements, Common Business Model Common Architecture and Common Protocols are basic to start

14. GSC-9, Seoul Principles for further development of Architecture and Protocols Principle 1 The variation between protocol stacks should be reduced to a minimum. Principle 2 The commonality between protocol stacks should be maximized. Principle 3 Tunneling should be used “interwork” non-compatible network segments. Principle 4 The protocol stack should be consistent with independent provision of any of peering points at any layer in the protocol stack. Principle 5 The protocol stack should facilitate the provision of value-added services. Principle 6 The protocol stack should facilitate access security. Principle 7 The protocol stack should facilitate QoS provision (involving quantifiable and measurable levels of service). Principle 8 The protocol stack should provide flexibility for mixing and matching different underlying physical media. Principle 1 The variation between protocol stacks should be reduced to a minimum. Principle 2 The commonality between protocol stacks should be maximized. Principle 3 Tunneling should be used “interwork” non-compatible network segments. Principle 4 The protocol stack should be consistent with independent provision of any of peering points at any layer in the protocol stack. Principle 5 The protocol stack should facilitate the provision of value-added services. Principle 6 The protocol stack should facilitate access security. Principle 7 The protocol stack should facilitate QoS provision (involving quantifiable and measurable levels of service). Principle 8 The protocol stack should provide flexibility for mixing and matching different underlying physical media.