| 基于数据接收质量的P2P流媒体自适应推拉调度算法 |
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| 引用本文： | 任浩,王劲林,尤佳莉.基于数据接收质量的P2P流媒体自适应推拉调度算法[J].微计算机应用,2011,32(4):1-8. |
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| 作者姓名： | 任浩 王劲林 尤佳莉 |
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| 作者单位： | 1. 国家网络新媒体工程技术研究中心中国科学院声学研究所,北京,100190;中国科学院研究生院,北京,100190
2. 国家网络新媒体工程技术研究中心中国科学院声学研究所,北京,100190 |
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| 基金项目： | 十一五"国家科技支撑计划课题，国家自然科学基金青年基金项目，中国高技术研究发展计划(863)项目 |
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| 摘 要： | 针对现有基于推、拉以及推拉混合模式调度算法不能高效分发数据的同时保证节点数据接收质量,导致服务器负载重的问题,提出一种基于数据接收质量的自适应推拉调度算法。该算法根据节点缓存区数据被及时正确填充的情况动态调节推拉获取数据比例,当数据接收质量好时主要采用推方式获取数据,数据接收质量变差时则过渡到拉方式获取数据。仿真实验表明所提算法可以充分利用推拉方式各自优点加速数据在网络中传播的同时保证节点数据接收质量,降低服务器负载,提高系统可扩展性。
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| 关 键 词： | 对等网络 流媒体 推拉调度 数据接收质量 自适应 |
Data Receiving Quality based Adaptive Pull Push Scheduling Algorithm for P2P Streaming System |
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| REN Hao,WANG Jinlin,YOU Jiali.Data Receiving Quality based Adaptive Pull Push Scheduling Algorithm for P2P Streaming System[J].Microcomputer Applications,2011,32(4):1-8. |
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| Authors: | REN Hao WANG Jinlin YOU Jiali |
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| Affiliation: | REN Hao1,2,WANG Jinlin1,YOU Jiali1(1.National Network New Media Engineering Research Center,Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190,P.R.China,2.Graduate University of Chinese Academy of Sciences,P.R.China) |
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| Abstract: | In order to solve the problem that existing push,pull and hybrid model cannot guarantee peer data receiving quality when distributing data among network and leads to heavy server pressure,a data receiving quality based adaptive Push-Pull scheduling algorithm is proposed.The algorithm adjusts data ratio received by peer between push and pull method dynamically according to condition that whether buffer is filled in time correctly.Push method is utilized when data receiving quality is good and pull method is ... |
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| Keywords: | Peer-to-Peer Streaming Push-Pull Scheduling Data Receiving Quality Adaptive |
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