【作者】 王雍； 杨海波； 冯淑娟；

【Author】 WANG Yong1,YANG Hai-bo2,FENG Shu-juan2(1.School of Communication Engineering,Hangzhou Dianzi University,Hangzhou Zhejiang 310018,China; 2.College of Information Science and Technology,Zhejiang Shuren University,Hangzhou Zhejiang 310012,China)

【机构】 杭州电子科技大学通信工程学院； 浙江树人大学信息科技学院；

【摘要】 无线传感器网络大多具有高度的空间相关性,所以可以只选出一部分节点来发送数据以降低能量开销。该文从网络节点的筛选策略方面入手,提出了一种基于空间相关性的媒体接入控制协议,该协议赋予剩余能量多的节点在接入信道时的高优先权,并抑制低能量的节点发送数据,从而平衡网络的能量消耗。仿真结果表明该协议能够降低网络能耗,延长网络寿命。更多还原

【Abstract】 Wireless sensor networks is generally highly spatial correlated,so it has been proposed to select a subset of sensor nodes to transmit their data so as to reduce energy consumption.In this paper,we investigate the ways of selecting sensor nodes and propose a spatial correlation-based medium access control protocol,referred as SCMAC.SCMAC ensures that nodes with more residual energy have higher priority than nodes with less one when contending for the shared channel,and data from nodes with little residual energy has fewer chance to be delivered.Simulation results have shown that our protocol can reduce the energy consumption of the networks so as to prolong their lifetime.更多还原