摘要
在研究无线传感器的问题中,降低网络能量消耗、延长网络寿命是无线传感器网络设计的重要目标,设计中为降低能耗,分簇是实现目标的主要方法。当簇头以单跳通信的方式将数据传输至基站时,远离基站的簇头因传送数据能耗太高而很快死亡。针对矩形监测区域的传感器网络,给出了基于能耗均衡的最大化网络寿命模型,提出了一种非均匀的节点部署算法。通过分析节点的能耗计算出了每层的宽度,并定量规划了每层中需要部署的节点数目。仿真实验表明,非均匀的节点部署算法能有效延长网络的寿命。
Reducing power consumption and prolonging the networks lifetime are important targets of wireless sensor networks.Clustering provides an effective way for prolonging the lifetime of a wireless sensor network.If all cluster heads transmit data packets directly to the base station,the cluster heads further from the base station will die much more quickly than those closer to the base station.In this paper,based on the rectangular monitoring field,we propose an energy consumption balance model to maximize the lifetime of sensor networks,and a non-uniform node deployment algorithm for sensor networks.The width of the layer is decided by node energy consumption.Also,the number of nodes in every layer is determined.Simulation results show that non-uniform node deployment algorithm can effectively extend the lifetime of the sensor network.
出处
《计算机仿真》
CSCD
北大核心
2010年第8期100-102,238,共4页
Computer Simulation
基金
湖南省自然科学基金项目(07JJ3119)
湖南省教育厅科研项目(09C547)
关键词
传感器网络
节点部署
能量消耗
非均匀
寿命
Sensor networks
Node deployment
Energy consumption
Non-uniform
Lifetime
