基于链路质量优化的无线传感器网络数据传输算法  

Link quality optimization based data transmission algorithm for wireless sensor network

作　　者：李建坡 刘琨 朱伟华[2] LI Jian-po;LIU Kun;ZHU Wei-hua(School of Computer Science,Northeast Electric Power University,Jilin 132012,China;School of Software Engineering,Jilin Technology College of Electronic Information,Jilin 132021,China)

机构地区：[1]东北电力大学计算机学院,吉林省吉林市132012 [2]吉林电子信息职业技术学院软件工程学院,吉林省吉林市132021

出　　处：《吉林大学学报（工学版）》2024年第9期2668-2675,共8页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(61501106);吉林省科技发展计划项目(20180101039JC)。

摘　　要：为提高无线传感器的网络传输速率,解决分簇路由过程的干扰、数据异常、冲突和拥塞问题,提出一种优化链路质量的数据传输算法。应用跨层设计,引入物理层信道信息,通过各簇的随机频率跳变,减弱数据收集时各簇间的干扰;定义了异常数据优先级,优化簇内时隙分配;在MAC层接入控制下,考虑影响簇间传输的因素,制订了簇间竞争方案,避免多节点接入簇头时的簇间冲突;对比接入簇头的数据队列和接收簇头的预留队列以检测拥塞,并通过路径转移解除拥塞。仿真结果表明:与LEACH、UCDTS、FPCRA算法相比,本文算法的数据传输量、网络生命周期等指标均有显著提升。To improve transmission rates in wireless sensor network and solve problems of interference,data anomalies,collision and congestion during clustered routing,a data transmission algorithm was proposed to optimize link quality.Applying cross layer design,introducing physical layer channel information,and reducing interference between clusters during data collection through random frequency hopping of each cluster.The priority of unusual data was defined to optimize slot allocation within clusters.With the access control in MAC layer,factors affecting inter-cluster transmission was considered and a competitive scheme was developed to avoid conflicts when multiple nodes access cluster heads.It compared data queues of accessing cluster heads and pre-reserved queues of receiving cluster heads to detect congestion.And the original routing was changed to solve congestion.Experimental results show that compared to LEACH,UCDTS and FPCRA algorithms,it effectively improves the data transmission quantity,the network life cycle and other indicators.

关 键 词：通信与信息系统 无线传感器网络 跨层设计 随机频率跳变 冲突避免 预留队列 

分 类 号：TN92[电子电信—通信与信息系统]