交通运输研究2025，Vol.11Issue(3)：1-11,11.DOI:10.16503/j.cnki.2095-9931.2025.03.001
车载与路侧单元信息包大小对无人配送车通信性能的影响——基于联合仿真法
Impact of OBU and RSU Packet Size on Communication Performance of Unmanned Delivery Vehicles Based on Co-simulation Approach
摘要
Abstract
To investigate the impact of packet size on the communication performance of unmanned delivery vehicles,and ensure their reliable communication and safe operation in complex urban traffic environments,a joint simulation environment was constructed based on the OMNeT++,SUMO,and Veins frameworks,integrated with the SimuLTE protocol.By setting the average speeds of unmanned delivery vehicles and motor vehicles to 10 km/h and 40 km/h respectively,real-world urban traffic con-ditions were simulated.In an idealized experimental environment with high network penetration rate(100%)and low network penetration rate(20%),which only includes unmanned delivery vehicles and connected vehicles,two packet sizes of 25 bytes and 50 bytes were used to evaluate the communica-tion performance of unmanned delivery vehicles using basic scenarios and control experimental sys-tems.The research results indicate that under low network penetration conditions,reducing the RSU packet size significantly increases the packet loss rate,with the maximum packet loss rate increasing from 0.840%to 14.747%and the average packet loss rate increasing from 0.013%to 0.055%,result-ing in a noticeable decline in communication stability;under high network penetration,this adjustment has a relatively small impact on communication performance,with the maximum packet loss rate only slightly reducing to 0.784%.In contrast,the average communication delay and average packet loss rate change of reducing the OBU packet size under high network penetration rate are both less than 0.05%,indicating limited impact.However,at low network penetration rate,the maximum packet loss rate increases to 7.231%,indicating weak adaptability to channel resource constraints.Overall,the im-pact of packet size on the communication performance of unmanned delivery vehicles is significantly modulated by network penetration rate,with RSU configuration having a more pronounced effect on packet loss rate,especially under conditions of high link congestion and scheduling pressure.There-fore,RSU parameter design should be prioritized as a key consideration in communication optimiza-tion.关键词
无人配送车/通信环境/信息包大小/车载单元/路侧单元/丢包率/通信时延Key words
unmanned delivery vehicle/communication environment/packet size/OBU(On-Board Unit)/RSU(Roadside Unit)/packet loss rate/communication delay分类
交通工程引用本文复制引用
孙宁,宋娟,郑雪健,姜川,刘硕..车载与路侧单元信息包大小对无人配送车通信性能的影响——基于联合仿真法[J].交通运输研究,2025,11(3):1-11,11.基金项目
北京市科技计划项目(Z211100004221001) （Z211100004221001）
