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基于非结构化P2P网络中通用搜索算法的比较 被引量:2
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作者 屈兰 张德民 景运瑜 《电信快报(网络与通信)》 2006年第2期23-27,共5页
P2P网络成为主要的研究课题已有几年。在这些分布式系统的运作中,搜索和发现资源即目标定位占重要地位。为此,文中给出了在非结构化P2P网络中一些目标搜索算法。常见的文件共享应用中,经常有大量数据需要交换,这都是基于这种网络才能实... P2P网络成为主要的研究课题已有几年。在这些分布式系统的运作中,搜索和发现资源即目标定位占重要地位。为此,文中给出了在非结构化P2P网络中一些目标搜索算法。常见的文件共享应用中,经常有大量数据需要交换,这都是基于这种网络才能实现的。通过分析关于搜索成功率的算法显示,搜索算法主要问题是带宽消耗和对拓扑变化的适应。模拟结果用直观的比较方式经验性的评价了这些参数性能。 展开更多
关键词 非结构化P2P网络 盲目搜索.已知搜索 成功率 消息量 hit数
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Navigation Route Based Stable Clustering for Vehicular Ad Hoc Networks
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作者 Zhiwei Yang Weigang Wu +2 位作者 Yishun Chen Xiaola Lin Xiang Chen 《China Communications》 SCIE CSCD 2018年第3期42-56,共15页
Due to high node mobility, stability has been always one of the major concerns of vehicle clustering algorithms in vehicular ad hoc networks. In this paper, we propose a novel clustering algorithm based on the informa... Due to high node mobility, stability has been always one of the major concerns of vehicle clustering algorithms in vehicular ad hoc networks. In this paper, we propose a novel clustering algorithm based on the information of routes planned by vehicular navigation systems. In the clustering algorithm, we design a residual route time function to quantitatively calculate the overlapping time among vehicles based on route information, with which a novel clusterhead selection metric is presented. We further design a mechanism of future-clusterhead, which can help avoid message exchanges at intersections and reduce the overhead of cluster maintenance. The simulation results show that, compared with previous works, our clustering algorithm can achieve higher stability and at the same time lower communication cost. 展开更多
关键词 VANET CLUSTERING mobile com-puting navigation route ad hoc networks
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