基于分簇P2P的多跳无线mesh网络资源检索与分发算法  

Clustered P2P based resource query and dissemination for multi-hop wireless mesh network

作　　者：文吉刚[1,2] 谢鲲[2] 谢高岗[1] 张广兴[1] 李仁发[2] 

机构地区：[1]中国科学院计算技术研究所,北京100190 [2]湖南大学信息科学与工程学院,湖南长沙410082

出　　处：《通信学报》2012年第11期128-135,共8页Journal on Communications

基　　金：国家自然科学基金资助项目(61003305;61070194);教育部博士点基金资助项目(20100161120022);湖南省自然科学基金资助项目(11JJA003);国家科技支撑计划基金资助项目(2012BAH01B03)~~

摘　　要：针对多跳无线mesh网络中拓扑结构和不同类型节点的特征,将多跳无线mesh网络建模成分簇P2P结构。为了降低资源发布的开销,在进行资源共享设计时,利用布鲁姆过滤器作为资源表示和消息在网络中传输。以布鲁姆过滤器为基础,提出了一种基于资源密度敏感的多跳无线mesh网络资源检索和分发算法,将移动客户端的资源下载请求转发到拥有资源副本最多的P2P分簇,利用该分簇的多个资源副本备份提供资源下载服务,最大化降低节点移动性产生的资源下载中断。仿真结果表明所提出的资源检索和分发算法能有效提升资源的下载性能。According to the character of mesh topology and character of the different types of mesh nodes, the multi-hop wireless mesh network was modeled as clustered P2E Moreover, in order to save the message bandwidth, the Bloom filter as the message to represent the resource list abstract was used, and the message was transmitted among the constructed P2P clusters. To minimize the downloading interruption due to mobility of clients, a resource-density-sensitive resource query and dissemination algorithm in which the query was transmitted to the cluster that had the maximum number of replica resources was proposed. The simulation results show that the proposed resource query and distribution algorithm can provide appealing resource downloading performance.

关 键 词：分簇P2P 多跳无线mesh网络 移动计算 资源检索和分发 

分 类 号：TP393.17[自动化与计算机技术—计算机应用技术]