WSN中基于混合天线的PEGASIS改进算法  

Improved PEGASIS algorithm based on hybrid antenna in WSN

作　　者：翁江鹏 王卫星 孙宝霞[4] 铁风莲 陈华强 Weng Jiangpeng;Wang Weixing;Sun Baoxia;Tie Fenglian;Chen Huaqiang(College of Electronic Engineering,South China Agricultural University,Guangzhou 510642,China;Guangdong Engineering Research Center for Monitoring Agricultural Information,Guangzhou 510642,China;Key Laboratory of Information Acquisition&Application in Agriculture,Guangzhou Science Technology&Innovation Commission,Guangzhou 510642,China;Guangdong Engineering Polytechnic,Guangzhou 510520,China)

机构地区：[1]华南农业大学电子工程学院,广州510642 [2]广东省农情信息监测工程技术研究中心,广州510642 [3]广州市农情信息获取与应用重点实验室,广州510642 [4]广东工程职业技术学院,广州510520

出　　处：《计算机应用研究》2018年第4期1217-1220,1226,共5页Application Research of Computers

基　　金：广东省自然科学基金资助项目(2014A030313451);广东省省级科技计划资助项目(2015A020209013)

摘　　要：针对无线传感器网络面积大、节点传输距离远的特点而导致能量消耗过快容易死亡的问题,引入定向天线,设计了基于混合天线的高能效收集路由协议(EEMC)。通过定义距离阈值,在区域内构造多条短链,短链通过链头收集链内节点数据后直接与基站通信。距离阈值根据链路位置和节点死亡情况长链系数有所变化,短链间采用全向天线传输数据,链头节点通过定向天线向远处的基站发送数据。仿真结果表明,该算法大大减缓了第一个死亡节点到来的时间,节省了每轮的网络能耗,降低了通信时延。Considering the energy of nodes in large-area wireless sensor network(WSN)drain rapidly for long-distance wireless communications,this paper proposed EEMC,a protocol that was based on hybrid networks which contained directional antennas and omnidirectional antennas.In EEMC,it defined a threshold of distance and formed several short chain.After forming the chains,it selected one sensor node as a leader and this node sent data to BS after collecting the information of nodes in the chain.Sensors could send data to each other through omnidirectional antennas while they communicated with BS through directional antennas.Simulation results show that,EEMC greatly delays the time first node dead,saves the amount of energy per round and reduces communication delay.

关 键 词：大面积 无线传感器网络 传感信息系统中具有能量高效的信息收集 混合天线 路由 

分 类 号：TP393[自动化与计算机技术—计算机应用技术] TP301.6[自动化与计算机技术—计算机科学与技术]