通信学报 ›› 2013, Vol. 34 ›› Issue (5): 176-183.doi: 10.3969/j.issn.1000-436x.2013.05.020

• 学术通信 • 上一篇    下一篇

云辅助P2P-VoD系统中一种邻居选择算法

丛鑫1,2,双锴1,苏森1,杨放春1,孙鑫1   

  1. 1 北京邮电大学 网络与交换技术国家重点实验室，北京100876;
    2 辽宁工程技术大学 电子与信息工程学院，辽宁 葫芦岛125105
  • 出版日期:2013-05-25 发布日期:2017-06-27
  • 基金资助:
    高等学校博士学科点专项科研基金资助项目;国家重点基础研究发展计划(973计划)基金资助项目;“新一代宽带无线移动通信网”科技重大专项基金资助项目;国家自然科学基金委创新研究群体基金资助项目

Neighbor selection algorithm in cloud-assistant P2P-VoD system

Xin CONG1,2,Kai SHUANG1,Sen SU1,Fang-chun YANG1,Xin SUN1   

  1. 1 State Key Laboratory of Networking and Switching Technology,Beijing University of Posts and Telecommunications,Beijing 100876,China;
    2 School of Electronic and Information Engineering,Liaoning Technical University,Huludao 125105,China
  • Online:2013-05-25 Published:2017-06-27
  • Supported by:
    Research Fund for the Doctoral Program of Higher Education of China;The National Basic Research Program of China (973 Program);Important National Science ＆ Technology Specific Projects:Next-generation Broadband Wireless Mobile Communications Network;Innovative Research Groups of the National Natural Science Foundation of China

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摘要：

摘要：提出了一种邻居选择算法，包括节点选择和块选择2个子算法。前者保证请求节点能够以较低的被拒绝概率发现提供视频数据的邻居节点；后者为节点以何种方式下载数据块提供依据，保证系统中视频数据块的高可用性。实验结果表明，提出的算法能进一步降低服务器带宽开销和节点请求拒绝率，并提升节点的下载速率。

关键词: 节点选择算法, 块选择算法, 云辅助, P2P-VoD

Abstract:

A neighbor selection algorithm was proposed which was composed of sub-algorithms of peer selection and chunk selection.The peer selection algorithm assured that the peers could find the neighbors providing the video data at a high probability.The chunk selection algorithm helped peers choose the methods of downloading data,from which the data chunks could be used at a high availability.The experiment demonstrates that the algorithm can further decrease the server bandwidth costs and the refusal rate of peers' requisition,and improve the download rate of peers.

Key words: peer selection algorithm, chunk selection algorithm, cloud-assistant, P2P-VoD

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