基于冲突容忍协议的隐藏终端改进方法  

An Improved Method of Hidden Terminal Based on Collision Tolerance Protocol

作　　者：曹天蕊[1] 续欣莹[2] CAO Tian-rui;XU Xin-ying(Taiyuan City Vocational College,Taiyuan 030027,China;Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]太原城市职业技术学院,太原030027 [2]太原理工大学,太原030024

出　　处：《火力与指挥控制》2020年第4期120-124,共5页Fire Control & Command Control

基　　金：国家自然科学基金(61603267);山西省回国留学人员科研基金资助项目(2016-044)。

摘　　要：在军队物联网中大规模部署的无线传感器节点密度加大,节点周边有众多传感器需要将数据传递到上级节点,隐藏节点在收到感知数据时共同竞争信道,发生在接收节点处数据碰撞。在分析现有的冲突容忍传输协议的基础上,结合协议固有特点和隐藏节点问题,对其进行了改进,减少了节点之间由于隐藏终端问题带来的吞吐率下降的问题。通过多次实验验证,结果表明改进后的冲突容忍协议能够有效地提高数据传输可靠性,系统的吞吐量也有了明显的提高。In internet of things of army,large-scale wireless sensors are deployed,the node coverage density increases.There are many sensors around the node need to transmit data to the superior node.The hidden nodes compete for the channel when receiving the sensing data,and the data collision occurs at the receiving node.Based on the analysis of the existing collision tolerance transmission protocol,this paper improves the inherent characteristics of the protocol and the hidden node problem,and reduces the problem of the drop in throughput between nodes due to hidden terminal problems.Through many experiments,the results show that the improved collision tolerance protocol can effectively improve the reliability of data transmission.And the throughput of the system has also been significantly improved.

关 键 词：无线传感网 冲突容忍 数据传输 NAV调节 马尔科夫预测 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TJ01[自动化与计算机技术—控制科学与工程]