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A Content Aware Packet Loss Recovery Scheme in P2P Video Streaming Systems

Ahmadifar, Behnam | 2011

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  1. Type of Document: M.Sc. Thesis
  2. Language: English
  3. Document No: 41660 (52)
  4. University: Sharif University of Technology, International Campus, Kish Island
  5. Department: Science and Engineering
  6. Advisor(s): Akbari, Behzad
  7. Abstract:
  8. Streaming video over the Internet has become popular in recent years. There are also popular solutions for data delivery, but these approaches are very inflexible and unpleasant because no appropriate error recovery technique isprovided in the application level of these systems for multimedia contents. In the past few years numerous error resilience Peer-to-Peer (P2P) systems have been introduced but still there is no fully dynamic error recovery technique. In this thesisthe researcher proposed a frame-based hybrid FEC-ARQ (Forward Error Correction – Automatic Repeat request) error recovery in Variable Bit Rate (VBR) video streams based on the network situation in a way that before requesting each type of frame we decide to use either FEC or ARQ to recover future packet losses. For this reason we need to have a decision making process to select an error recovery policy on each frame. This work is done using Round Trip Time (RTT) of each type of frames. Wealso use rate control to avoid bursting packet loss due to error recovery overhead. Our simulation results show that our approach can recover packet losses better than FEC and ARQ. We compared the proposed solution with other approaches based on three parameters: 1.distortion 2.End-to-end delay 3.Overhead. From distortion point of view, the proposed solution gained 10% to 30% enhancement from other approaches. In overhead and end-to-end delay, the results are in the middle of the other two approaches
  9. Keywords:
  10. Peer-to-Peer Network ; Error Recovery ; Video Streaming ; OMNet++ Simulator ; IP Multi Casting

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