220D 无线自组网路由拓扑更新分析与优化

摘要

Topology updates is an important composition of mobile ad hoc network routing protocol,and a key factor that affects the ad hoc network performance.220D routing protocol sets that the topology updates information of nodes should not be transmitted more often than once every MIN_UPDATE_PER.So inappropriate MIN_UPDATE_PER may have an impact on the network performance.Aiming at this problem, this paper proposes a routing topology update optimisation method which adaptively changes MIN_UPDATE_PER.Results of simulation show that this method can improve the network performance.%拓扑更新是无线自组网路由协议的重要组成部分，是影响网络性能的关键因素。220D 无线自组网路由协议规定其节点在每个最小时间间隔内最多发送一次拓扑更新消息。针对最小时间间隔值设置不合理时，会影响网络性能的问题，提出一种自适应改变最小时间间隔值的路由拓扑更新优化方法，仿真结果显示该方法可以改善网络性能。