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.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
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~~
关键词
无线传感器网络
无标度拓扑
加权
能耗均衡
wireless sensor networks
scale-free topology
weighted
balancing energy consumption
