An Age-Of-Information Perspective on Decentralized Congestion Control in Vehicular Networks

Ion Turcanu, Andrea Baiocchi, Nikita Lyamin, Alexey Vinel
2021 2021 19th Mediterranean Communication and Computer Networking Conference (MedComNet)  
Vehicular networking enables a wide range of emerging Cooperative Intelligent Transportation System (C-ITS) applications, from safety to traffic efficiency and infotainment. Many of these applications depend on the reliability and timeliness of status information periodically exchanged among vehicles on the same wireless communication channel. A major effort has been spent, especially by standardization bodies, to define congestion control algorithms for the vehicular networking environment.
more » ... picture is, however, more complex than simply controlling the load level on the channel, given the non-trivial interplay of delivery reliability, system throughput, and timeliness of updates. In this paper, we provide a comprehensive performance evaluation of the main state-ofthe-art broadcast rate control algorithms from the point of view of channel load, utilization efficiency, and information freshness. We evaluate these algorithms in a realistic simulation environment and describe a centralized approach to define a bound on the performance. We show that controlling the congestion based on either channel load or information freshness only leads to sub-optimal performance.
doi:10.1109/medcomnet52149.2021.9501273 fatcat:zbhakb4pljbhdfmss7c7kjxk3u