Abstract: We are interested in providing Video-on-Demand (VoD) streaming service to a large population of clients using peer-to-peer (P2P) approach. Given the asynchronous demands from multiple clients, continuously changing of the buffered contents, and the continuous video display requirement, how to collaborate with potential partners to get expected data for future content delivery are very important and challenging. In this paper, we develop a novel scheduling algorithm based on deadline-aware network coding (DNC) to fully exploit the network resource for efficient VoD service. DNC generalizes the existing network coding (NC) paradigm, an elegant solution for ubiquitous data distribution. Yet, with deadline awareness, DNC improves the network throughput and meanwhile avoid missing the play deadline in high probability, which is a major deficiency of the conventional NC. Extensive simulation results demonstrated that DNC achieves high streaming continuity even in tight network conditions.

Key words: Video on Demand (VoD), Peer-to-Peer (P2P), Network coding (NC), Deadline-aware network coding (DNC)

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