无线传感器网络MAC协议研究  

Research on MAC Protocol for Wireless Sensor Network

作　　者：向碧群[1] 刘亮[1] 余晓[2] 

机构地区：[1]重庆邮电大学移通学院,重庆401520 [2]重庆师范大学学前教育学院,重庆400047

出　　处：《计算机工程》2012年第11期107-110,113,共5页Computer Engineering

基　　金：重庆市教委科学技术研究基金资助项目(KJ110524)

摘　　要：针对S-MAC协议节点能耗均衡能力的不足,提出一种基于网络能耗均衡的跨层优化协议(BS-MAC)。在该机制中,增加变量TS,用来记录该节点成为虚拟簇边界节点的次数,通过与邻居节点比较TS的大小进行自适应睡眠/侦听。在路由层成簇算法中加入参数TS,跨层调节节点能耗的均衡。仿真数据显示,BS-MAC在能耗和延迟方面较S-MAC没有大的变化,但能够提高网络节点能耗的均衡性,降低节点死亡率,延长网络生存周期。For the fault of S-MAC protocol in energy-consume unbalance between nodes,a cross-layer optimization MAC protocol based on energy-consume balance（BS-MAC） is proposed.The new mechanism adds the new variable TS to record the number of times that the node becomes virtue clusters＇ boundary.Nodes sleep/listen adaptively through comparing TS with their neighbor nodes.BS-MAC adjusts the balance of energy-consume cross-layer with the clustering algorithm which adds TS.Numerical analysis shows that BS-MAC not only increases the balance of the nodes＇ energy consumption,reduces the nodes＇ mortality and extends the network life time,but also keeps the same energy-consume and delay with the S-MAC.

关 键 词：无线传感器网络 跨层优化 能耗均衡 生存周期 分簇路由 BS-MAC协议 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]