一种能耗均衡的无线传感器网络加权无标度拓扑研究  

Research on weighted scale-free topology with balancing energy consumption characteristics in wireless sensor networks

作　　者：刘洲洲[1,2] 王福豹[1] 

机构地区：[1]西北工业大学电子信息学院,西安710076 [2]西安航空学院,西安710077

出　　处：《物理学报》2014年第19期51-58,共8页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:61103242)资助的课题~~

摘　　要：针对无线传感器网络节点能耗不均衡问题,通过对节点生命期建模,得出节点生命期受节点剩余能量和通信距离的影响,进而将两端节点生命期作为构建拓扑时边权重的影响因子,通过边权重控制节点权重,最终得出了一种能耗均衡的无线传感器网络加权无标度拓扑模型,并理论证明了该模型的点权、边权和节点度均服从幂律分布.实验结果表明,该模型具有无标度拓扑的强容错性,并有效的均衡了网络中的节点能耗,延长了网络的生命期.Due to the energy limitation in nodes in the wireless sensor networks, the problem whether the node energy consumption is balanced becomes a primary one in the design of networks. Through building the node lifetime model,we conclude that the node lifetime is affected by the node residual energy and the communication distance. Additionally,bothendsofthenodelifetimeareintroducedastheinfluencingfactorsonedgeweights. Andthenthroughtheedgeweight the node weight is controlled, so that the weighted scale-free topology with energy consumption balanced characteristicsis obtained. Finally, theoretical proof shows that the distribution of the node weight, the edge weight, and the node degree all obey the power-law distribution. Simulation results show that this model has the good fault tolerance characteristics that the scale-free topology can have. And it also has obvious advantages in balancing the network energy consumption and prolonging the network lifetime.

关 键 词：无线传感器网络 无标度拓扑 加权 能耗均衡 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置] TN929.5[自动化与计算机技术—控制科学与工程]