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Point to Multipoint Streaming Media Delivery in the Edge Network Problem Statement

Point to Multipoint Streaming Media Delivery in the Edge Network Problem Statement. Draft-litao-p2mpsmd-sam-problem-statement-00.txt. Tao Li Taoli.nudt@gmail.com National University of Defense Technology, P.R China. SAMRG @ IRTF March 25, 2011 Prague. Objective.

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Point to Multipoint Streaming Media Delivery in the Edge Network Problem Statement

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  1. Point to Multipoint Streaming Media Delivery in the Edge Network Problem Statement Draft-litao-p2mpsmd-sam-problem-statement-00.txt Tao Li Taoli.nudt@gmail.com National University of Defense Technology, P.R China SAMRG @ IRTF March 25, 2011 Prague

  2. Objective • Discuss the problems and requirements for point to multipoint (P2MP) streaming media delivery in the edge networks.

  3. STB RG SHE VHO VSO Core/ Backbone Edge/ Metro Access Why we focus on the edge network? From AT&T Labs IPTV Network Architecture SHE: Super head-end VHO: Video hub office VSO: Video serving office HG: Residential gateway STB: Set-top box

  4. Why we focus on the edge network? • Critical position: connects the access network (end users) to the core network • End-to-end principle: keep the simplicity in core network, putting intelligence towards the end points • Deployment of storage servers: such as CDN, separate the P2MP streaming media delivery into 2 phases • Manageability: number of nodes, bandwidth and throughput Feasible solutions here?!

  5. Current Situation • ISP: minimize the amount of the required network resources (such as bandwidth) • End-users: improve QoE (Low delay &jitter, packet loss) • CP/SP: efficient and low-cost deployment, maintenance and management of the service network • Lack of solutions for fulfilling all the requirements…

  6. The weakness of the existing solutions • Delivery strategies is only driven by the downstream users’ requests • No accuracy (Lack of awareness of network states) • No flexibility (No separation between mechanism and policy)

  7. IPTV Use Case Source IPTV Edge Networks Reroute! P2MP Streaming media delivery Congestion! = User Requests + Network state awareness + Policy-based Control Users Requests

  8. Problem Description • Weakness of Network state information (NSI) acquisition • Collect the timely NSI in the edge network,while minimizing interference and maximizing inference accuracy • Lack of integration of policy-based control • Support multiple policies to control the delivery process, while minimizing the modifications of the underlay infrastructure

  9. Architectural Requirements • Network-awared OAM support to CP/SP • timely and accurate information for adaptive decisions • Incremental deployment • Continuity and quality • fast failure recovery • traffic engineering • quality adaption

  10. Next Step • Discuss the utilization of in-network storage • Modify according to the suggestions and comments

  11. Comments and questions?

  12. The 3 areas of the Internet • Core - transit traffic • Edge - access traffic and transit traffic. • Access -end users & end equipment Core STB Edge CPE Access

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