1. Document title: DSN and its future work in ITU-T Meeting name: The 15 th CJK NGN WG meeting SDO name: CCSA Presenter name: Jianyin Zhang E-mail: zhangjianyin@chinamobile.com Telephone number: 13910022506

2. Distributed Service Network (DSN)

3. Agenda Q19 Introduction 1 Q19 Roadmap 2 3 Next Step 4 Past Work Open Question 45

4. DSN – Q19 Introduction Question 19/13 – Distributed services networking (DSN) -- New Question acknowledged in October 2008 DSN is an P2P technology driven NGN -- New title: Distributed Service Network (proposed) Introduction of distributed technology Reduce CAPEX/OPEX Improve scalability/ubiquity Self organization/maintenance Fault tolerance etc.

5. DSN – Q19 Introduction Distributed Functions Distributed service control functions, Distributed transport control functions Distributed DataStorage Functions Distributed Resource Location Functions Distributed User Location Functions Distributed Index Functions Distributed Node-Bootstrap Functions Distributed Forwarding Functions Distributed Functions

6. DSN – Q19 Roadmap 2012.1 2013.1 2009.1 Q19 Kick off End of Stage 1 End of Stage 2 Tasks Stage DSN Scenarios, Requirements, and Architectural Framework, etc. 2010.1 End of Q19 DSN Architecture, and key issues, etc. Migration from NGN to DSN?

7. DSN – Past Work Kick off --- proposed DSN scope --- proposed study roadmap of DSN Drafts --- baseline document of DSN scenarios --- baseline document of DSN requirements

8. DSN – Next Step To progress drafts on DSN scenarios --- to supplement the existing scenarios --- to add some new scenarios To progress drafts on DSN requirements --- to propose new service requirements --- to propose new network capability requirements To propose and discuss DSN architectural framework Other related topics

9. DSN – Study Scope VoIP, IM/PS/GM, Streaming, Content delivery, new capabilities brings out new services? Open API, standarized protocols, new capabilities are delivered to services Homogeneous nodes, flat architecture, P2P based load sharing, survivability Physical network topology reporting Distributed network management, Self-organized network management Distributed resource registration, distributed resource delivery, topology aware P2P traffic routing Distribution Function: Distributed indexing, distributed forwarding, distributed storage, distributed location, bearer awareness

10. Open questions How to maintain the operability and manageability of the telecommunication network ？ New feature ？ How to evaluate the similar distributed technology and how to introduce their good features? How to abstract the service feature from different services? And how to assure their integrality? Other difficult points

11. Thanks ！

12. 12 Content Main Progress of Studies on Standards Improvement of Operational Mechanism Members and Observers Promotion and Publicity International Exchange and Cooperation Contributions to International Organizations