无线多跳网络分簇协作路由算法  

A Cluster Cooperative Routing Algorithm in Wireless Multi-hop Networks

作　　者：谢鲲[1] 孙家奇[1] 龚闯[1] 文吉刚[1] 

机构地区：[1]湖南大学信息科学与工程学院,长沙410082

出　　处：《小型微型计算机系统》2013年第2期210-215,共6页Journal of Chinese Computer Systems

基　　金：国家自然科学基金项目(61003305;61070194)资助;博士点基金项目(20100161120022)资助;湖南省自然科学基金项目(11JJA003)资助;湖南大学"青年教师成长计划"项目资助

摘　　要：协作路由将物理层的协作通信技术和网络层的路由选择技术相结合是一种提高网络性能的跨层路由设计方案.现有的协作路由算法没有充分利用网络拓扑结构的特点,难以获得最优的协作路由.基于无线网络节点分布概况,提出一种分簇协作路由算法,以提高网络性能并增强网络的可靠性.该算法的分为三个阶段,簇的形成,簇间路由和簇内路由.算法的每个阶段都从节点分布对协作通信的影响出发优化协作路由设计,充分利用了无线网络中物理介质的广播优势和周围节点协作的优势.仿真结果表明,本文所提出的协作路由算法能够显著降低路由的中断概率,提高网络的可靠性.Cooperative routing is a cross-layer routing design scheme which combines the physical layer cooperative communication technology and the network layer routing technology to improve network performance. However, the existing cooperative routing mechanism doesnt make good use of the characteristics of network topology and can hardly achieve optimal cooperative routing per- formance. Based on node distribution of the wireless multi-hop network, this paper proposes a cluster cooperative routing algorithm to improve the transmission reliability. The algorithm includes three phases ： the phase of cluster formation, the phase of routing between clusters and the phase of routing in the cluster. To utilize the broadcast characteristics of wireless transmission and cooperative ability of neighbor nodes in wireless networks, each phase in the algorithm takes the impact of node distribution on cooperative communica- tion into consideration to optimize the algorithm design. Simulation results show that the proposed algorithm can significantly reduce the outage probability of the route, increase the reliability of the network.

关 键 词：协作通信 分簇协作路由 无线多跳网络 协作分集 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]