现代电子技术2026，Vol.49Issue(7)：7-11,18,6.DOI:10.16652/j.issn.1004-373x.2026.07.002
基于动态资源分配的C-V2X拥塞控制策略
C-V2X congestion control strategy based on dynamic resource allocation
陈潭 1江晓明 1丛滢淇 1江宇杰1
作者信息
- 1. 江苏大学 计算机科学与通信工程学院,江苏 镇江 212013
- 折叠
摘要
Abstract
Cellular vehicle-to-everything(C-V2X)technology,as an integral part of the next generation intelligent transportation system(ITS),is committed to improving the communication efficiency and safety between vehicles.However,the existing access mechanisms of traffic message are prone to conflict and will cause transmission failure in the case of time-varying vehicle density.In view of the above,this paper proposes an information channel resource allocation strategy named dynamic semi-persistent scheduling(D-SPS),which focuses on the message congestion control of heavy traffic in the existing urban roads.In this strategy,a road-section-based ribbon clustering scheme is performed and the communication resources are allocated dynamically according to the node density within the relevant cluster,which to a certain extent alleviates the congestion caused by uneven distribution of node density in each lane during a specific time period.In addition,the lane cluster head election strategy is further improved on the basis of the above strategies,so as to reduce the election cost and improve the stability of the cluster.The results of modeling calculation and numerical comparison show that the proposed strategy can effectively reduce access congestion of current Mode 2 mechanism.In addition,the transmission timeliness of security beacons and the packet delivery ratio(PDR)of the information with high bit rate have been improved significantly in the scene of high-density data interaction.关键词
车联网/C-V2X/Mode2/拥塞控制/分簇/簇头选举/安全服务Key words
Internet of Vehicles/C-V2X/Mode 2/congestion control/clustering/cluster head election/safety service分类
信息技术与安全科学引用本文复制引用
陈潭,江晓明,丛滢淇,江宇杰..基于动态资源分配的C-V2X拥塞控制策略[J].现代电子技术,2026,49(7):7-11,18,6.
