关键词: 无线传感器网络, 拓扑控制算法, MG模型, Delaunay图, MEDel算法

Abstract: The main design purpose of topology control of Wireless Sensor Networks（WSN） is to reduce node power consumption and prolong the lifetime of WSN.However，the energy consumption of WSN comes from communication module mostly.By slowing down energy consumption of wireless communication module，controlling the neighbor set of each node，reducing the communication links and restricting the communication in the crucial links，node power consumption can be reduced.Combining the MG model with the Delaunay graph，this paper presents a topology control algorithm MEDel by restricting the communication links and preserving the optimal energy consumption path in Delaunay graph.This algorithm has the advantages of strong connectedness，symmetry and bounded average node degree.

Key words: wireless sensor networks, topology control algorithm, MG model, Delaunay graph, MEDel algorithm