Reliability Evaluation of IEEE 802.11p-Based Vehicle-to-Vehicle Communication in an Urban Expressway

作     者：Yizhi Wang Jianming Hu Yi Zhang Chao Xu 

作者机构：Department of Automation Tsinghua National Laboratory for Information Science and Technology (TNList) Tsinghua University Jiangsu Province Collaborative Innovation Center of Modern Urban Traffic Technologies 

出 版 物：《Tsinghua Science and Technology》 (清华大学学报（自然科学版（英文版）)

年 卷 期：2015年第20卷第4期

页      面：417-428页

核心收录：

学科分类：08[工学] 0838[工学-公安技术] 

基　　金：partially supported by the National Key Basic Research and Development (973) Program of China (No. 2012CB725405) the National Natural Science Foundation of China (No. 61273238) 

主　　题：IEEE 802.11p V2V communication empirical measurement urban expressway line-of-sight condition 

摘      要：IEEE 802.11p/DSRC （Dedicated Short Range Communication） is considered to be a promising wireless communication standard for enhancing transportation safety and efficiency. However, IEEE 802.11p-based Vehicle- to-Vehicle （V2V） communication is still unreliable because of the complicating factors of high vehicle speed and complex radio environments. In this paper, we performed a data-based evaluation of V2V communication reliability, using real-world measurements in a typical urban expressway in Beijing. With respect to the characteristics of the urban expressway and our experimental data, we found road slope and traffic density to be the major environmental factors having a significant impact on the V2V communication＇s Line-Of-Sight （LOS） conditions. On the basis of these two factors, we propose a fuzzy classification method for the LOS conditions, and separate the real- time communication environments into different LOS cases. For each LOS case, we quantify the metrics as received signal strength indication, packet delivery rate, and communication latency. The results reveal that the communication reliability in urban expressways is very unstable because of the changing LOS conditions. This study provides a useful reference for the IEEE 802.11 p-based cooperative systems in urban expressways.