一种基于无线信道通信质量的MWSN数据传输机制  

A kind of data transmission mechanism based on the quality of wireless channel in MWSN

作　　者：王国玲 杨文忠[2] 张振宇[2] 王庆鹏 许超英 WANG Gucrling;YANG Wcn-zhong;ZHANG Zheiryu;WANG Qing-pcng;XU Chao-ying(College of Software, Xinjiang Univeity,Urumqi 830046,China;College of Information Science and Engineering,Xinjiang University,Urumqi 830046,China)

机构地区：[1]新疆大学软件学院,新疆乌鲁木齐830046 [2]新疆大学信息科学与工程学院,新疆乌鲁木齐830046

出　　处：《东北师大学报（自然科学版）》2019年第2期51-58,共8页Journal of Northeast Normal University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(U1603115,61262087,U1435215);国家“973”计划项目(2014CB340500)

摘　　要：针对移动无线传感器网络资源受限和无线链路通信质量不稳定的问题,提出了一种基于无线信道通信质量的数据传输机制.综合考虑路径损失、节点的运动速度大小、节点的运动方向和节点的剩余能量计算传输概率.为了提升网络的性能,动态更新数据消息的副本数,此外根据数据消息的生存时间决定消息的传输和替换顺序,在Matlab上进行仿真实验.结果表明,所提出的路由算法与DT算法、Flooding算法、FAD算法相比,数据消息的投递率至少提高6%,与Flooding算法、FAD算法相比副本数至少减少10%.For the problem that there are restricted resources in mobile wireless sensor networks and wireless channel quality is unstable,a data transmission mechanism based on the quality of wireless channel is proposed.The sink node periodically broadcasts detected packet,and the sensor nodes calculate the path loss according to the signal strength value of the detected packet.Considering the path loss,the node’s velocity,the node’s movement direction and the node’s residual energy,we calculate the transmission probability.In order to improve the performance of network,we dynamically update the number of data message’s copies and decide the order of message’s transmission and replacement according to the data message’s lifetime.The simulation results on Matlab show that the data delivery rate of the routing algorithm proposed in this paper is increased by 6% at least compared with DT,Flooding and FAD.The average copy numbers are reduced by 10% at least compared with the FAD and Flooding.

关 键 词：移动无线传感器网络 信号强度 能量有效 投递率 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]