WSN中基于冗余度的移动代理路由算法

摘要

In data fusion based on Mobile Agent(MA) in Wireless Sensor Network(WSN), the order and number of nodes on the route traversed by a MA determine the energy consumption and hence, which has a significant impact on the overall performance of the whole system. So this paper proposes a Redundancy Based Mobile Agent(RBMA) algorithm, which brings in redundancy parameter together with residual energy parameter and the shortest distance parameter. Methods are adopted to eliminate redundant nodes, create and optimize MA itinerary includes threshold processing, Kruskal method and improved post-order transversal. Simulation result shows that, RBMA algorithm decreases data delay, and consumes less energy than Genetic Algorithm(GA) and Near-optimal Itinerary Design(NOID) algorithm. It can prolong the network lifetime.%在基于移动代理(MA)的无线传感器网络数据融合中，MA路由的选择直接影响系统能耗，从而决定整个网络的使用寿命。为此，引入冗余度参数，同时结合节点剩余能量参数和节点间最短距离参数，提出基于冗余度的 MA路由算法。采用阈值处理方法消除冗余节点，利用Kruskal方法建立最小生成树，初步形成MA路径，并通过改进的后序遍历方法对其进行优化。仿真结果表明，与遗传算法和近优路由设计算法相比，该算法能有效降低能耗，减少数据延时，延长网络生命周期。