无线传感器网络中基于网络覆盖的节点睡眠调度机制  

Node sleep scheduling mechanism based on network coverage for wireless sensor networks

作　　者：孙泽华[1] 裴二荣[1] 韩昊哲 Sun Zehua;Pei Errong;Han Haozhe(School of Communication & Information Engineering, Chongqing University of Posts & Telecommunications, Chongqing 400065 , China)

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065

出　　处：《计算机应用研究》2016年第9期2731-2734,2742,共5页Application Research of Computers

基　　金：国家自然科学基金资助项目(61379159);重庆市研究生科研创新项目(CYS14149);重庆市教委科技研究项目(KJ130513);重庆市基础与前沿研究计划项目(csts2013jcyj A40020)

摘　　要：节点睡眠—唤醒调度机制对于延长无线传感器网络的生命周期至关重要。在现有的节点睡眠调度机制中,节点能耗是调度机制的唯一考虑目标。然而这种以节省节点能耗为目的调度机制很容易导致传感网络无法完全覆盖监测区域并产生严重后果。针对现有调度机制的不足,提出一种考虑到网络覆盖面的节能调度机制。这种机制既能降低网络能耗,也能够兼顾到网络的监测覆盖情况。仿真结果表明该机制能在保证较高的网络覆盖面的前提下有效提高网络生命周期。It is essential for wireless sensor networks to prolong it5 s lifecycle by the nodes sleep-awake scheduling mechanism.The only consideration of existing nodes sleep scheduling algorithm was the energy consumption. However,the scheduling mechanism which was proposed to save nodes5 energy would easily cause the sensor networks5 incompletely coverage of the monitoring area,leading to serious consequences. Based on the shortage of the existing scheduling algorithms, this paper proposed an energy-efficient scheduling mechanism taking into account the network coverage which could not only lower the network energy consumption but also balanced the monitor coverage. Simulation results show that this mechanism can effectively improve the network lifecycle at the premise of ensuring high network coverage.

关 键 词：无线传感器网络 网络覆盖 睡眠调度 能耗 

分 类 号：TP393.02[自动化与计算机技术—计算机应用技术]