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P2P点播系统中资源下载算法的研究 被引量：1

ON RESOURCE DOWNLOAD ALGORITHM IN P2P-BASED VIDEO-ON-DEMAND SYSTEM
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摘要 在基于P2P技术的流媒体应用中,数据的实时性至关重要,而它易受网络动荡的影响。采用一个优化的资源下载算法可以有效缓解这一影响。提出了一种基于预连接的动态资源下载算法,算法结合了紧急数据通道策略、数据分片块预下载选择策略和基于预连接的对等节点选择策略等三种策略,实验证明,该算法能有效提高点播系统中数据的及时到达率,均衡网络负载,减少数据重传率,增加系统的稳定性。 In a P2P-based live media streaming system,real-time data is essential, but it is vulnerable to network instability. An optimized resource download algorithm can be used to effectively ease the impact on it. In this paper it presents a dynamic resource download algorithm based on pre-connecting technology. The algorithm combines the emergency data channel strategy, data sub-block sub-piece pre-download selection strategy and pre-connecting-based peers selection strategy. Our experiments demonstrate that demanded algorithm can effectively improve data timely arrival rate, balance network load, reduce retransmission rate and increase system stability in VOD system.
作者 朱子荣 寿志勤
机构地区 合肥工业大学计算机学院 合肥工业大学管理学院
出处 《计算机应用与软件》 CSCD 北大核心 2008年第10期175-177,221,共4页 Computer Applications and Software
关键词 P2P 点播 资源下载 P2P VOD Resources download
分类号 TP393.4 [自动化与计算机技术—计算机应用技术] TN943.6 [电子电信—信号与信息处理]
  • 相关文献

参考文献7

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二级参考文献13

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共引文献28

同被引文献10

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  • 7Liu Zhengye,Shen Yanming,Shivendra S P,et al.Using Layered Video to Provide Incentives in P2P Live Streaming[C]//Proceedings of Workshop on Peer-to-peer Streaming and IP-TV.New York,USA:ACM Press,2007:311-316.
  • 8Zhang Yan,Zhou Xu,Song Junping,et al.Time-stamped Equal Size Segmentation and Chunk Scheduling Algorithms for SVC Based P2P Streaming Systems[C]//Proceedings of the 18th IEEE International Conference on Parallel and Distributed Systems.[S.l.]:IEEE Computer Society,2012:706-707.
  • 9王娟,纪其进,朱艳琴.基于用户行为特征的P2P视频点播系统数据预取机制[J].小型微型计算机系统,2010,31(10):2049-2053. 被引量：5
  • 10宋俊平,张棪,周旭,唐晖,白帆,赵志峰.基于SVC的P2P流媒体系统研究综述[J].计算机应用研究,2013,30(4):965-970. 被引量：7

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计算机应用与软件
2008年 第10期

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