适用于传感网的拓扑控制策略β-STC

β-skeleton based topology control strategy for wireless sensor networks

无线传感器网络拓扑控制策略对于延长网络的生存时间、增大网络容量、提高路由协议和MAC协议的效率等具有重要的意义。在分析现有基于邻近图的传感器网络拓扑控制策略的基础上,提出一种基于β-Skeleton的传感器网络拓扑控制策略,该策略在β-Skeleton模型的基础上引入路径损耗指数和能耗控制参数,在不同应用场景中通过调整路径损耗指数,可以使网络拓扑具有更好的网络性能,比如平均节点度、通信路径平均跳数、平均死亡节点数等。此外,当部分节点能量耗尽时,该策略可以通过调整能耗控制系数继续保持网络的连通,从而延长网络的生命周期。

In Wireless Sensor Networks （WSN）, topology control algorithms are significant for prolonging the network lifetime, reducing radio interference, increasing the emciency of routing protocols and MAC protocols, among other things. On the basis of the analysis of the topology strategies based on proximity graphs, this paper proposed a topology algorithm β- STC （β- Skeleton based Topology Control）. The proposed strategy can achieve an better performance such as average node degree, average hops of the path to the sink, average dead numbers by adjusting the path loss parameter and the energy control coefficient in different application scenarios. Besides, the network can mainta/n connected to prolong the life cycle by adjusting energy consumption control coefficientkwhen some of the nodes exhausted their energy.