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A FAST CHANNEL SWITCHING SYSTEM FOR IPTV BASED ON MULTI-CHANNEL PREVIEW

A FAST CHANNEL SWITCHING SYSTEM FOR IPTV BASED ON MULTI-CHANNEL PREVIEW. 指導教授： 鍾添曜 學生： 961432 謝征歷 961419 王筱誼. OUTLINE. Introduction Design Simulation Conclusion. Introduction. The rapid development of technology in P2P Multimedia Streaming System. PPLive, PPStream Real-Time Playback

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A FAST CHANNEL SWITCHING SYSTEM FOR IPTV BASED ON MULTI-CHANNEL PREVIEW

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  1. A FAST CHANNEL SWITCHING SYSTEM FOR IPTV BASED ON MULTI-CHANNEL PREVIEW 指導教授： 鍾添曜 學生：961432 謝征歷 961419 王筱誼

  2. OUTLINE • Introduction • Design • Simulation • Conclusion

  3. Introduction • The rapid development of technology in P2P Multimedia Streaming System. • PPLive, PPStream • Real-Time Playback • Video-On-Demand • user has more and more choice to watch favorite channel • increase the frequency of channel switching

  4. INTRODUCTION Goals: 1). Help users find their favorite channel fast. 2). Decrease the bandwidth consumption 3). Reduce the server's overhead and the peer's connection delay 4). Provide a stable quality

  5. HPMP FOR P2P MULTIMEDIA STREAMING SYSTEM • propose a High Performance Multi-channel Preview (HPMP)

  6. CH 1 data CH 2 data CH 3 data CH 4 data Video server Track server Watch mode leader A leader B Preview mode HPMP FOR P2P MULTIMEDIA STREAMING SYSTEM

  7. Channel 1 2 3 4 5 6 7 8 9 10 11 12… leader leader new node (leader) TFS • leader receives the data from watch node, and the leader push the data to the children. • leader will automatically take the next C resource nodes • limits the depth of tree to increase the stability of Preview mode

  8. Simulation • Simulations for different upload bandwidth distributions using network simulator OMNeT++ • full quality video stream :2Mbps • low quality of the stream:128Kbps • The number of channels is 20 • The number of peers is 200 • A period of auto-changing 4 channels of low quality video is 8 seconds

  9. Simulation Tab.1.Scenarios for comparing different tree depth and different upload bandwidth under HPMP and Traditional mode

  10. Simulation Fig.2.the cumulative number of peers finding favorite channel in different tree’s depth under HPMP Fig.1.Statistics for number of joining peers

  11. Conclusion • we provide a novel method named HPMP from different angles to improve channel change time in P2P live media streaming. • HPMP reduces the hop distance time efficiently and decreases the tracker server’s overhead

  12. Thank you

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