| 采用分区缓存调度策略的P2P点播系统 |
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| 引用本文： | 曾文烽,许胤龙.采用分区缓存调度策略的P2P点播系统[J].计算机工程,2010,36(9):90-93. |
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| 作者姓名： | 曾文烽 许胤龙 |
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| 作者单位： | 中国科学技术大学计算机科学与技术系,合肥,230027;安徽省高性能计算重点实验室,合肥,230027 |
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| 基金项目： | 国家自然科学基金资助项目(60773036) |
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| 摘 要： | 针对在当前的P2P点播系统中，由于节目热度的差异导致数据副本分布不合理的问题，提出一个采用分区缓存调度策略的P2P流媒体点播系统设计方案。该策略将用户节点缓存区分为2个部分，分别考虑节点自身的需求和整个网络的全局需求进行调度，以优化节目数据在各节点间的分布，从而提高播放质量。通过仿真实验，验证了该系统设计与策略的有效性。
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| 关 键 词： | 对等网络 流媒体点播 缓存调度 |
| 修稿时间： | |
Peer-to-Peer Video on Demand System with Partitioned Buffer-Scheduling Strategy |
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| ZENG Wen-feng,XU Yin-long.Peer-to-Peer Video on Demand System with Partitioned Buffer-Scheduling Strategy[J].Computer Engineering,2010,36(9):90-93. |
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| Authors: | ZENG Wen-feng XU Yin-long |
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| Affiliation: | (1. Department of Computer Science and Technology, University of Science and Technology of China, Hefei 230027; 2. Key Laboratory on High Performance Computing, Anhui Province, Hefei 230027) |
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| Abstract: | According to the problem of inefficient data distribution due to the difference of program popularity in current Peer-to-Peer(P2P) Video-on-Demand(VoD) systems, this paper proposes a P2P VoD streaming system with partitioned buffer-scheduling strategy. The strategy divides user buffer into two partitions, in which one considers the local need of the peer itself and the other considers the global need of the whole network to make scheduling, so as to optimize the distribution of program data between user nodes and provide better playing quality for users. Simulation indicates that such system design and strategy are effective. |
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| Keywords: | Peer-to-Peer(P2P) network Video-on-Demand(VoD) streaming buffer-scheduling |
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