具有小世界特性的低能耗无线传感器网络簇级拓扑研究

Abstract

The article proposes a cluster level topology algorithm of wireless sensor network and it is proposed to combine with UCR (unequal cluster-based routing）mechanism proposed by Professor Wu Jie. It reduces the cluster size near the base station and solves the hot problem of the high energy consumption. Using OPNET simulation software to simulate the cluster-level topology, when the super node number increased to 6 to 18, the average path length is reduced, the path length rate change is reduced, and energy decreases significantly. The simulation experiment indicates that the cluster level topology structure of wireless sensor network shows the strong robustness with good survivability. In the complex network, small world network has large aggregation coefficient and small average path length. By adding super nodes to the original network, it forms shortcuts of direct communication between the sink node, and decreases the average path length and energy consumption. Currently, the small world is used to the survey of WSN, which has not taken the hot spot problem near base station in consideration.