C-V2X网络下基于传输损失函数的数据传输策略  

Data transmission strategy based on transmission loss function in C-V2X network

作　　者：郝奕 黄雷 HAO Yi;HUANG Lei(Shanghai ShangYu Auto Technology Co.,Ltd.,Shanghai 200092,China;College of Electronic and Information Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]上海上禹智途汽车科技有限公司,上海200092 [2]同济大学电子与信息工程学院,上海200092

出　　处：《电信科学》2023年第12期65-75,共11页Telecommunications Science

摘　　要：蜂窝车联网是智能网联汽车发展的重要方向。为了提高通信过程中的数据传输质量,对平均端到端通信时延、时延抖动程度和丢包率进行计算,提出了表征系统性能的传输损失函数;设计和实现了基于传输损失函数的专用短程通信(DSRC)短消息(DSM)数据传输策略,并将其与透明传输策略进行了试验测试与对比分析。试验结果表明,相比于透明传输策略,提出的数据传输策略在静态直道、静态弯道、动态直道、动态弯道4种场景下,传输损失分别下降了48.95%、52.96%、47.79%和50.86%。提出的数据传输策略确保了网络直连通信的有效性、稳定性和可靠性的综合优化。Cellular vehicle-to-everything(C-V2X)is an important direction of the development of intelligent and connected vehicles.In order to improve the quality of data transmission in the communication process,the average end-to-end communication delay,delay jitter degree and packet loss rate were calculated,and a transmission loss function was proposed to represent the performance of the system.A dedicated short range communication(DSRC)short message(DSM)data transmission strategy based on transmission loss function was designed and implemented,and it was compared with transparent transmission strategy.The test results show that compared with the transparent transmission strategy,the transmission loss of the proposed data transmission strategy decreases by 48.95%,52.96%,47.79%and 50.86%under the four scenarios of static straight track,static curve,dynamic straight track and dynamic curve.The proposed message transmission strategy ensures the comprehensive optimization of the effectiveness,sta-bility and reliability of the direct network communication.

关 键 词：车联网 传输损失函数 数据传输策略 DSM 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]