车联网中协作数据分发方案研究

doi:10.19678/j.issn.1000-3428.0058928

计算机工程 ›› 2021, Vol. 47 ›› Issue (8): 29-36,44. doi: 10.19678/j.issn.1000-3428.0058928

车联网中协作数据分发方案研究

林峰¹, 丁鹏举², 梁吉申³, 罗铖文², 蒋建春¹

1. 重庆邮电大学自动化学院, 重庆 400065;
2. 重庆邮电大学通信与信息工程学院, 重庆 400065;
3. 陆军工程大学通信士官学校, 重庆 400035

收稿日期:2020-07-13 修回日期:2020-08-13 发布日期:2021-08-14
作者简介:林峰(1978-),男,高级工程师,主研方向为车联网、4G/5G无线终端系统开发;丁鹏举,硕士研究生;梁吉申,副教授;罗铖文,硕士研究生;蒋建春,教授。
基金资助:
国家科技重大专项“5G产品研发规模试验”（2018ZX03001023-006）。

Research on Collaborative Data Distribution Scheme in Internet of Vehicles

LIN Feng¹, DING Pengju², LIANG Jishen³, LUO Chengwen², JIANG Jianchun¹

1. Institute of Automation, Chongqing University of Posts and Telecommunications, Chongqing 400065, China;
2. Institute of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China;
3. Army Engineering University Communications Sergeant School, Chongqing 400035, China

Received:2020-07-13 Revised:2020-08-13 Published:2021-08-14

摘要/Abstract

摘要： 在车联网中，车辆可通过无线通信从路侧单元（RSU）下载文件数据，但由于车辆移动性高、RSU部署间距大及传输范围有限，使得车辆可下载数据量受到较大影响。为此，提出一种协作数据分发方案。利用双向车辆和RSU的资源可用性对目标车辆进行辅助下载，使得目标车辆在未覆盖RSU的盲区（DA）内仍能获取所需文件数据，在此基础上，考虑资源节点的竞争接入与传输以及转发完成时间对数据传输的影响，建立理论分析框架来说明数据传输过程。仿真结果表明，相较于同向协助下载和反向协助下载机制，该方案能够提升目标车辆下载数据量，减少DA内数据传输中断的影响，提高DA利用率。

关键词: 车联网, 盲区, 数据分发, 竞争接入, 竞争传输

Abstract: In the Internet of vehicles, vehicles can download file data from the Road Side Units(RSUs) through wireless communication. However, the volume of data that vehicles can download is significantly influenced by the high mobility of the vehicles, the large distance between deployed RSUs and the limited transmission range. In this regard, a collaborative data distribution scheme is proposed. This scheme makes full use of the resource availability of the two-way vehicles and RSUs to assist the target vehicle in downloading data, so that the target vehicles can still obtain the required file data in the Dark Areas(DAs) beyond the coverage of RSUs. Moreover, considering the impact of the competitive access and transmission of resource nodes, and forwarding completion time on data transmission, a theoretical analysis framework is established to illustrate the data transmission process. Simulation results show that compared with the same direction assisted download and reverse assisted download mechanism, this scheme can increase the volume of data that target vehicles can download, reduce the impact of data transmission interruption in DAs, and improve the utilization rate of DAs.

Key words: Internet of vehicles, Dark Areas(DAs), data distribution, contention access, competitive transmission

中图分类号:

TP393

林峰, 丁鹏举, 梁吉申, 罗铖文, 蒋建春. 车联网中协作数据分发方案研究[J]. 计算机工程, 2021, 47(8): 29-36,44.

LIN Feng, DING Pengju, LIANG Jishen, LUO Chengwen, JIANG Jianchun. Research on Collaborative Data Distribution Scheme in Internet of Vehicles[J]. Computer Engineering, 2021, 47(8): 29-36,44.

http://www.ecice06.com/CN/Y2021/V47/I8/29

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