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计算机工程 ›› 2013, Vol. 39 ›› Issue (2): 90-93. doi: 10.3969/j.issn.1000-3428.2013.02.018

• 网络与通信 • 上一篇    下一篇

P2P流媒体数据块的优化调度策略

黄国伟 1,陈 志 2   

  1. (1. 深圳信息职业技术学院计算机学院,广东 深圳 518172;2. 天津工业大学计算机科学与软件学院,天津 300387)
  • 收稿日期:2012-03-20 修回日期:2012-05-22 出版日期:2013-02-15 发布日期:2013-02-13
  • 作者简介:黄国伟(1981-),男,讲师、博士,主研方向:对等网络,流媒体及其应用;陈 志,讲师、博士
  • 基金资助:

    广东省自然科学基金资助项目(S2011040006119);深圳信息职业技术学院院级自然理科类基金资助项目(YB201008)

Optimized Scheduling Strategy for Data Block in P2P Streaming Media

HUANG Guo-wei 1, CHEN Zhi 2   

  1. (1. School of Computer, Shenzhen Institute of Information Technology, Shenzhen 518172, China; 2. School of Computer Science and Software, Tianjin Polytechnic University, Tianjin 300387, China)
  • Received:2012-03-20 Revised:2012-05-22 Online:2013-02-15 Published:2013-02-13

摘要: 在基于数据驱动的P2P流媒体系统中,流媒体数据在参与应用的节点间进行分发,导致流媒体播放质量降低。针对流媒体数据块的分发调度问题,提出一种数据块分发调度策略,通过在调度中考虑节点所需数据块对其流媒体播放质量的影响,以期在合理利用节点有限带宽资源的同时,实现流媒体播放质量的优化。仿真实验结果表明,该策略在改善流媒体播放质量方面具有较明显的优势。

关键词: 对等网络, 流媒体, 数据驱动, 流媒体播放质量, 数据块, 调度策略

Abstract: The delivery manner of data blocks among nodes causes the streaming play quality of data-driven P2P streaming system. Aiming at the problem of data block delivery scheduling, a scheduling strategy is proposed, which takes it into account the impact of a desired block of a node to the streaming play quality of that node. The strategy guarantees the streaming play quality, while utilizes the bandwidth resource of nodes efficiently. Simulation experimental results show that the strategy has evident advantage in improving streaming media play quality.

Key words: Peer-to-Peer(P2P) network, streaming media, data-driven, streaming media play quality, data block, scheduling strategy

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