一种基于模糊逻辑的自适应信标交换算法

针对移动无线传感器网络中贪婪地理路由协议采用固定信标周期导致通信暂盲的问题，提出了一种基于模糊逻辑的自适应信标交换算法。该算法以节点移动速度、节点剩余能量和邻居节点的数量作为评价因素，利用模糊逻辑控制机制确定自适应的信标周期，提高了邻居表构建与维护的准确性与实时性，为贪婪地理转发提供了可靠依据。仿真结果表明：该算法有效减少了通信暂盲现象，降低了控制开销和平均端到端时延，提高了分组交付率，适用于对传输可靠性要求高的大规模移动无线传感器网络。

An adaptive beacon exchange algorithm based on fuzzy logic

Aiming at problem that temporary communication blindness caused by greedy geographical routing protocol adopts stationary beacon exchange in mobile wireless sensor networks( WSNs),a novel adaptive beacon exchange algorithm is proposed. The algorithm adopts node moving speed,node residual energy,number of neighboring nodes as evaluation factors and confirm adaptive beacon period using fuzzy logic control mechanism. The adaptive beacon exchange algorithm can increase accuracy and realtime of neighbors table construction and maintenance and provide reliable basis for greedy geographical relay. Simulation shows that the proposed algorithm reduce phenomenon of temporary communication blindness,increases packet delivery ratio and reduce average end-to-end delay as well as control overhead,so it is suitable for application of large-scale mobile WSNs,which has high requirement for transmission reliability.