MANET双层群节点移动模型设计与研究

Design and Research a Double Rank Group Mobility Model in Mobile Ad Hoc Networks

在移动Ad hoc网络仿真中,节点移动模型直接决定了网络的拓扑结构,进而影响网络性能的评估。"参考点群移动模型"群内部节点以一个逻辑中心为参考随机运动,而现实场景中,节点群运动时经常呈现一个群有多个逻辑中心的特点。由此提出了一种"双层群移动模型",并从物理链路和路由协议两个层面与其它移动模型进行仿真比较。仿真结果表明,该模型更能反映出具有双层性的群移动场景中网络的拓扑变化,更适合该种场景下移动Ad hoc网络仿真研究。

In the simulation of mobile Ad hoc networks, node mobility model directly determines the topology of the network, and then impacts the performance evaluation. In Reference Point Group Mobility Model, there is only a single reference point in one group, but in real circumstances, there are always many reference points in one group. A double rank group mobility model was proposed and a comparison with other models was made by both physical link aspect and routing protocol aspect. The simulation shows that the mobility model can reflect the topology change and suits the simulation study of mobile ad hoc networks better in that situation.