基于分簇的无线传感器网络MAC节能算法  

MAC Energy-efficient Algorithm in Wireless Sensor Network Based on Clustering

作　　者：掌明[1] 王经卓[1] 董自健[1] 

机构地区：[1]淮海工学院电子工程学院,江苏连云港222005

出　　处：《计算机工程》2012年第15期70-73,共4页Computer Engineering

基　　金：国家自然科学基金资助面上项目(61174013);江苏省高校自然科学基金资助项目(BK20110398;08KJD520003);江苏省高校科研成果产业化推进基金资助项目(JHB2011-61)

摘　　要：为减少节点能耗和提高信道利用率,提出一种基于分簇结构的无线传感器网络MAC节能算法(EEC-MAC)。在TDMA机制的基础上,采用时隙系数动态调整簇内节点的时隙大小,降低数据的传输时延。对于部分不需要数据传输的节点不分配时隙,使其拥有较长的睡眠时间来节约能量。簇内节点按其剩余能量系数形成时隙分配顺序,减少状态转换的能耗。簇间节点采用基于CSMA/CA机制的随机分配策略实现通信。仿真结果表明,EEC-MAC节能效果较好,具有较小的平均通信时延和较长的网络生命周期。In order to reduce node energy consumption and improve channel utilization, an energy-efficient Medium Access Control（MAC） algorithm based on cluster for Wireless Sensor Network（WSN） called EEC-MAC is proposed. It adopts time-slot factor based on TDMA to adjust slot size to reduce data transmission delay and allows a longer sleep time for the part of nodes which have no data transmission to save energy, and forms a slot order by the residual energy coefficient to reduce the state conversion energy consumption. It uses CSMA/CA mechanism to communicate with cluster heads. Simulation results show that EEC-MAC has a better energy saving, a smaller average network delay and a longer lifetime.

关 键 词：无线传感器网络 介质访问控制 分簇 节能算法 时隙分配 

分 类 号：TP393.1[自动化与计算机技术—计算机应用技术]