异步传感网中能量感知的跨层路由协议  

An Energy-Aware and Cross-Layer Routing Protocol( ECRP)in Asynchronous Wireless Sensor Networks

作　　者：刘韬[1] 

机构地区：[1]西南民族大学计算机科学与技术学院,四川成都610041

出　　处：《计算机仿真》2015年第9期290-294,298,共6页Computer Simulation

基　　金：中国博士后基金资助项目(2013M542289);西南民族大学中央高校基本科研业务费资助项目(13NZYTD02)

摘　　要：在网络能源优化节能的设计中,针对事件驱动型无线传感器网络,提出了一种能量感知的跨层路由协议(ECRP)。协议中,节点在做出路由决定时不仅要考虑路由总能耗的大小,还要兼顾节点的剩余能量,即避免个别节点频繁被选为路由中继,从而过早耗完能量,形成能量空洞,缩短网络寿命。另外,采用上述协议的网络中的节点无需同步地睡眠或工作,发送节点在发送数据之前有间歇地连续发送多个短序言包来唤醒接收节点,再发送数据,其目的是避免同步睡眠机制中节点周期性地交换睡眠调度信息而带来的通信负担和能量开销。最后,对节点的工作/睡眠调度周期进行了优化以降低节点的总能耗。实验结果表明,上述协议可有效提高网络的能量利用效率,延长了网络的寿命。In this paper, an energy-aware and cross-layer routing protocol for event-driven wireless sensor net- works （WSNs） , called ECRP, is proposed. In ECRP, not only the total energy consumption hut also residual energy are taken into account when the nodes make routing decisions. The goal of ECRP is to decrease the energy consump- tion of nodes and to avoid energy holes in WSNs. Furthermore, ECRP uses the asynchronous sleep/active schedule and the sender wakes receiver up through a series of short preamble before it sends the data packet. Compared with the synchronous sleep/active schedule, asynchronous sleep/active schedule decreases communication burden and en- ergy consumption. Finally, a solution which is able to obtain optimal sleep/active schedule to minimize the energy consumption of each node is provided. Simulation results show high energy efficiency of ECRP.

关 键 词：无线传感器网络 异步睡眠调度 能量感知 跨层路由 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]