Ad Hoc网络模糊逻辑组播算法  

A fuzzy logic multicasting algorithm for ad hoc networks

作　　者：王庆文[1] 史浩山[1] 戚茜[2] 

机构地区：[1]西北工业大学电子信息学院,陕西西安710072 [2]西北工业大学航海学院,陕西西安710072

出　　处：《重庆大学学报（自然科学版）》2011年第10期109-114,共6页Journal of Chongqing University

基　　金：教育部博士点基金资助项目(20050699037);国家自然科学基金资助项目(60472074)

摘　　要：为了提高Ad Hoc网络组播的效率,提出了FLMA:一种新的Ad Hoc网络模糊逻辑组播算法。FLMA采用模糊逻辑,以适应Ad Hoc网络拓扑动态变化带来的信息不精确性。以重播分组新增覆盖节点的数量相对度和节点的剩余能量相对度为模糊控制系统的输入变量,以节点重播分组的延迟时间为模糊控制系统的输出变量,优化节点重播分组的优先权。从而减少了分组在网络中的重复传输,降低了节点间的竞争和碰撞,均衡了网络中节点的能量消耗。仿真实验结果表明:相比BCAST算法,FLMA延长了网络生命周期,降低了平均端对端延迟和节点平均丢包率,提高了网络的吞吐率。To increase the multicasting efficiency of Ad hoc networks,a fuzzy logic multicasting algorithm（FLMA） is proposed.FLMA adopts the fuzzy logic to tolerate the imprecise information caused by dynamic network topology.The two input variables of the fuzzy logic system are the relative degree of the additional coverage node number and the relative degree of the residual energy.The deferring time of rebroadcast is the output variable of the fuzzy logic system,which is used to optimize the priority of the nodes to rebroadcast.FLMA reduces the redundant retransmission and the chance of the contention and collision,while balances the energy consumption of the nodes.Simulation results reveal that the FLMA achieves better performance than BCAST in terms of the network lifetime,average end-to-end delay,the average number of drops per node and the throughput.

关 键 词：组播 AD HOC网络 模糊逻辑 生命周期 

分 类 号：TN929[电子电信—通信与信息系统]