Energy consumption balance strategy for wireless sensor networks based on nodes twice-deployment
XU Bao-guo · Journal of Yanshan University · 2009
Focusing on the problem of energy hole in wireless sensor networks,an energy consumption balance strategy with twice-deployed nodes is proposed.Based on multi-hop transmitting mode of multi-layered circular network,the energy consumption model of wireless sensor network is analyzed,and the sensor nodes in each slice are deployed for twice.In order to overcome data redundancy in the slices with more nodes,only the sensing nodes are deployed in each slice in equal density firstly,then the nodes deployed for the second time transmit data to the next slice just as relay stations.According to the principle of equal node average energy consumption,the node density in each slice is determined.The twice-deployment for sensing nodes and relaying nodes respectively not only can save the hardware cost,but also raise the data repeater efficiency.Simulation results indicate that this strategy can balance node energy consumption effectively,so that alleviate energy hole problem,thus prolongs the lifetime of wireless sensor network.