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基于在线评估的无线Mesh网流媒体缓存 被引量:1

Online-Estimation Based Streaming Media Replication Over Wireless Mesh Network
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摘要 针对无线Mesh网的特点,本文研究了媒体片段副本密度的理想最佳分布与流媒体片段流行度空间分布、节点能力以及节点稳定性之间的关系,提出了基于副本稳定性补偿的缓存优化算法.相应的,为了及时准确地了解各个地点的节点行为特性,本文提出了基于年龄分布分析的可靠性评估算法.进而本文提出了一种轻量级的全分布式的流媒体缓存策略实施方案.这些算法和缓存策略占用资源小,既不需要增加额外的复杂设施,也不需要过多的额外开销,既保持了无线Mesh的扩展性和灵活性,又兼顾了节点计算能力弱、资源有限等约束. In view of the characteristics of Wireless Mesh Network(WMN),this paper investigates the relationship between the ideal optimal density of replicas over the space and the popularity spatial distribution of the media segments together with the capacity and reliability of the nodes,and then proposes a reliability repairing based replication optimization algorithm.Accordingly,to timely and accurately understand the characteristics of the nodes at various locations,this paper proposes a reliability estimation algorithm base on analyzing the age distribution of media segments and nodes.Further on,an implementation of full-distributed lightweight replication strategy is presented.These estimation algorithms and caching strategies only employ the handy information without adding complex infrastructure or suffering too much overhead,not only maintain the WMN scalability and flexibility,but also take into account the computing power and resource constraints.
出处 《电子学报》 EI CAS CSCD 北大核心 2011年第7期1523-1529,共7页 Acta Electronica Sinica
基金 国家自然科学基金(No.60773193) 武汉市晨光计划基金(No.200850731351)
关键词 无线MESH网 流媒体缓存 参数在线评估 wireless mesh streaming media replication online estimation
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  • 1杨戈,廖建新,朱晓民,樊秀梅.流媒体分发系统关键技术综述[J].电子学报,2009,37(1):137-145. 被引量:39
  • 2孙海燕,王晓东,周斌,贾焰,王怀民,邹鹏.基于存储联盟的双层动态副本创建策略—SADDRES[J].电子学报,2005,33(7):1222-1226. 被引量:15
  • 3朱晴波,乔浩,陈道蓄.分布式多媒体存储系统中的全局缓存管理[J].电子学报,2002,30(12):1832-1835. 被引量:2
  • 4Shudong Jin,Limin Wang.Content and service replicationstrategies in multihop wireless mesh networks. Proceedingsof the8th ACM International Symposium on Modeling,Analy-sis And Simulation of Wireless And Mobile Systems . 2005
  • 5Saurabh Tewari,Leonard Kleinrock.Proportional replication inpeer-to-peer networks. Proceedings IEEE INFOCOM . 2006
  • 6Ming Zhong,Kai Shen,Joel Seiferas.Replication degree cus-tomization for high availability. Proceedings of ACM Eu-roSys’’08 . 2008
  • 7Xu Du,Tai Wang,Zongkai Yang,Jiang Yu,Wei Liu.Variablerate caching for video delivery in heterogeneous environment. Proceedings of IEEE International Conference on Com-munications . 2006
  • 8Edith Cohen,Scott Shenker.Replication Strategies in Unstructured Peer-to-peer Networks. Proceedings of ACM SIGCOMM Conference on Applications, Technologies, Architectures, and Protocols for Computer Communication (ACM SIGCOMM) . 2002
  • 9Jing Zhao,Ping Zhang,Guohong Cao.Cooperative caching in wireless P2P networks: design, implementation, and evaluation. IEEE Transactions on Parallel and Distributed System . 2010
  • 10Sozio Mauro,Neumann Thomas,Weikum Gerhard.Near-optimal dynamic replication in unstructured Peer-to-Peer net-works. Proceedings of the ACM Symposium on Principles ofDatabase Systems . 2008

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