A Cost-Effective Buffer Map Notification Scheme for P2P VoDs Supporting VCR Operations
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概要
- 論文の詳細を見る
In this paper, we propose a new buffer map notification scheme for Peer-to-Peer Video-on-Demand systems (P2P VoDs) which support VCR operations such as fast-forward, fast-backward, and seek. To enhance the fluidity of such VCR operations, we need to refine the size of each piece as small as possible. However, such a refinement significantly degrades the performance of buffer map notification schemes with respect to the overhead, piece availability and the efficiency of resource utilizations. The basic idea behind our proposed scheme is to use a piece-based buffer map with a segment-based buffer map in a complementary manner. The result of simulations indicates that the proposed scheme certainly increases the accuracy of the information on the piece availability in the neighborhood with a sufficiently low cost, which reduces the intermittent waiting time of each peer by more than 40% even under a situation in which 50% of peers conduct the fast-forward operation over a range of 30% of the entire video.
著者
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Fujita Satoshi
Department Of Anesthesiology School Of Medicine Sapporo Medical University
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FUJITA Satoshi
Department of Information Engineering, Graduate School of Engineering, Hiroshima University
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UEDERA Ryusuke
Department of Information Engineering, Graduate School of Engineering, Hiroshima University
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