基于逻辑回归算法的列车单端双网无线接入方案研究  

TAUStudy on wireless access scheme of"dual network on one terminal"of the train based on logistic regression

作　　者：张张 白轩 廖志斌 付嵩 Zhang Zhang;Bai Xuan;Liao Zhibin

机构地区：[1]广州铁科智控有限公司,广东广州510000

出　　处：《现代城市轨道交通》2023年第5期42-47,共6页Modern Urban Transit

摘　　要：随着城市轨道交通进入全自动运行时代,信号系统对车地无线通信的可靠性和时效性提出更高的要求。为此,文章提出一种适用于LTE-M无线通信系统的列车单端双网无线接入方案。方案中单端车载TAU同时接入LTE-M A/B双网,从而提高车地通信的可靠性,同时使用一种基于逻辑回归算法智能地选择性能更好的网络以提高车地通信的时效性。最后使用现场的无线测试数据对该算法进行测试,并且在实验室搭建仿真环境对方案进行整体验证,结果显示逻辑回归算法对LTE无线网络的选择准确率较高,基于逻辑回归算法的列车单端双网无线接入方案具备可行性。With urban rail transit entering the era of fully-automatic operation,the signal system has put forward higher requirements for the reliability and effectiveness of train-ground wireless communications.Therefore,an LTE-M dual network wireless access connection on one terminal of a train is proposed.In this scheme,the TAU on one end is simultaneously connected to the LTE-M A&B dual network,thereby improving the reliability of train-ground communications.At the same time,a network selection algorithm based on logistic regression is used to intelligently select a network with better performance to improve the timeliness of train-ground communications.Finally,the algorithm was tested using field wireless test data,and a simulation environment was established in the laboratory to verify the overall setup.The results showed that the logistic regression algorithm had a high accuracy in selecting LTE wireless networks,and the dual network wireless access scheme on one terminal of the train based on logistic regression was feasible.

关 键 词：城市轨道交通 车地无线通信 无线接入 单端双网 逻辑回归 网络选择 

分 类 号：U285.21[交通运输工程—交通信息工程及控制]