面向车联网基于边缘计算的点对点信息传输  

Point-to-point Information Communication Based on Edge Computing for Internet of Vehicle

作　　者：沈大港 范鹏飞 周慧娟[1] 周艳芳[3] 高博文[4] SHEN Da-gang;FAN Peng-fei;ZHOU Hui-juan;ZHOU Yan-fang;GAO Bo-wen(North China University of Technology,Beijing 100144,China;Computer Network Information Center,Chinese Academy of Sciences,Beijing 100190,China;Research Institute of Highway Science of Ministry of Transport,Beijing 100088,China;China Unicom Beijing Branch,Beijing 100035,China)

机构地区：[1]北方工业大学,北京100144 [2]中国科学院计算机网络信息中心,北京100190 [3]交通运输部公路科学研究院,北京100088 [4]中国联通北京市分公司,北京100035

出　　处：《计算机技术与发展》2021年第8期139-144,共6页Computer Technology and Development

基　　金：国家自然科学基金(U1909204);北京市科技计划项目(Z191100007519007);北京市“实培计划”项目(京教高[2016]3号)。

摘　　要：随着车联网的快速发展,交通信息的传输需求也随之增长。然而在当前的车联网信息传输系统中,不仅因为物理距离过长、传输流程复杂而容易造成丢包、传输过慢和网络堵塞的问题,而且用户进行的信息操作工作流程也比较繁琐,不利于车联网的信息传输系统的发展。为此,针对车联网交通信息传输,引入移动边缘计算技术(mobile edge computing,MEC),提出面向车联网的高效点对点信息传输机制。首先,优化交通传输系统场景,在其网络信号基站中引入MEC服务器,并分析在其传输系统中加入MEC服务器后的传输特点并设计出对应的点对点传输系统。然后,为同时满足车与车和车与路之间的信息传输,分别编写用户设备间数据传输子系统和数据传输辅助服务子系统。编写完成后对标之前分析的传输特点进行优化,设计并实现了系统优化的关键技术。实验结果显示,新机制可显著降低服务响应时延,提升车联网信息传输效率。With the rapid development of Internet of vehicles,the demand of traffic information transmission is also increasing.However,in the current information transmission system of Internet of vehicles,it is not only easy to cause packet loss,slow transmission and network congestion due to the long physical distance and complex transmission process,but also tedious information operation workflow for users,which is not conducive to the development of information transmission system of Internet of vehicles.For this reason,aiming to the traffic information transmission of the Internet of vehicles,the mobile edge computing(MEC)is introduced and an efficient point-to-point information transmission mechanism for Internet of vehicles is proposed.First,the traffic transmission system scenario is optimized and MEC server is introduced into its structure.Then,the transmission characteristics of MEC server are analyzed and the corresponding point-to-point transmission system is designed.In order to satisfy both vehicle-to-vehicle and vehicle-to-road direct information transmission,the data transmission subsystem and the data transmission auxiliary service subsystem are respectively written.After the preparation,the transmission characteristics of the analysis before the standard are optimized,and the transmission optimization technology for system optimization is designed and realized.The experiment shows that the new mechanism can significantly reduce the service response delay and improve the efficiency of vehicle Internet information transmission.

关 键 词：车联网 边缘计算 信息传输系统 场景分析 点对点传输 

分 类 号：TP305[自动化与计算机技术—计算机系统结构]