基于位置信息的路侧单元数据传输调度优化策略

doi:10.6040/j.issn.1672-3961.0.2024.229

山东大学学报 (工学版) ›› 2025, Vol. 55 ›› Issue (3): 25-33.doi: 10.6040/j.issn.1672-3961.0.2024.229

• 交通运输工程——智慧交通专题 • 上一篇

基于位置信息的路侧单元数据传输调度优化策略

时颖^1,2,张丹洋²,王桐¹,陈义平²,付鑫^3*

1.哈尔滨工程大学信息与通信工程学院, 黑龙江哈尔滨 150001;2. 黑龙江科技大学电子与信息工程学院, 黑龙江哈尔滨 150022;3.长安大学运输工程学院, 陕西西安 710064

发布日期:2025-06-05
作者简介:时颖(1980— ),女,黑龙江鸡西人,教授,硕士生导师,硕士,主要研究方向为车联网与智能交通. E-mail:s_ying@hrbeu.edu.cn. *通信作者简介:付鑫(1982— ),男,山东日照人,教授,博士生导师,博士,主要研究方向为交通运输系统. E-mail:fuxin@chd.edu.cn
基金资助:
国家重点研发计划资助项目(2020YFC1512002);国家自然科学基金资助项目(62372131);长安大学中央高校基本科研业务费专项资金资助项目(300102343516);黑龙江省属高校基本科研业务费资助项目(2022-KYYWF-0564,2023-KYYWF-0531)

Data transmission scheduling optimization strategy of roadside unit based on location information

SHI Ying^1,2, ZHANG Danyang², WANG Tong¹, CHEN Yiping², FU Xin^3*

SHI Ying^{1, 2}, ZHANG Danyang², WANG Tong¹, CHEN Yiping², FU Xin^3*(1. College of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, Heilongjiang, China;
2. School of Electric and Information Engineering, Heilongjiang University of Science and Technology, Harbin 150022, Heilongjiang, China;
3. School of Transportation Engineering, Chang'an University, Xi'an 710064, Shaanxi, China

Published:2025-06-05

摘要/Abstract

摘要： 针对如何降低车路协同系统中路侧单元间载带中继数据传输总时延的问题,考虑路侧单元覆盖范围内V2I(vehicle-to- infrastructure)下行数据传输速率自适应变化特性,提出一种基于车辆位置信息的数据传输调度策略。该策略综合考虑数据更新的随机性、位置差异的数据传输速率自适应性,依据数据缓存队列的状态转移构建马尔科夫链模型;同时,考虑路侧单元覆盖范围内存在多辆车的情况,提出基于车辆速度和车辆位置联合权重的车辆优先通信模型,以此为基础确定通信概率服务策略;建立以数据传输总时延最小为目标的非线性优化函数,通过线性化求解获得路侧单元数据传输调度最优策略。仿真结果表明,在车辆到达率、数据到达率变化的条件下,该策略均能有效减少传输总时延,且该策略能抵御数据到达率的变化,具有较好的数据传输稳定性。

关键词: 车路协同系统, 路侧单元, 数据传输, 位置信息, 马尔科夫链, 时延

Abstract: To address the problem of how to reduce the total delay of data transmission with relay between roadside units, considering the adaptive variation characteristics of the V2I downlink data transmission rate within the coverage of roadside units, a data transmission scheduling strategy based on vehicle location information was proposed. This strategy comprehensively considered the randomness of data update and the adaptability of data transmission rate of location difference, and constructed a Markov chain model based on the state transition of a data cache queue. At the same time, considering the existence of multiple vehicles in the roadside unit coverage area, a vehicle priority communication model based on the joint weight of vehicle speed and vehicle position was proposed to determine the communication service strategy. A nonlinear optimization function with the objective of minimizing the total delay of data transmission was established, and the optimal data transmission scheduling strategy of the roadside unit was obtained by linearization. The simulation results showed that the LTS strategy could effectively reduce the total transmission delay under the condition of vehicle arrival rate and data arrival rate change, and the strategy could resist the change of data arrival rate and had good stability of the data transmission.

Key words: cooperative vehicle-infrastructure system, roadside units, data transmission, location information, Markov chain, time delay

中图分类号:

U491.2

时颖,张丹洋,王桐,陈义平,付鑫. 基于位置信息的路侧单元数据传输调度优化策略[J]. 山东大学学报 (工学版), 2025, 55(3): 25-33.

SHI Ying, ZHANG Danyang, WANG Tong, CHEN Yiping, FU Xin. Data transmission scheduling optimization strategy of roadside unit based on location information[J]. Journal of Shandong University(Engineering Science), 2025, 55(3): 25-33.

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基于位置信息的路侧单元数据传输调度优化策略

Data transmission scheduling optimization strategy of roadside unit based on location information

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