A study of vehicular desynchronization for platooning application

摘要

Platooning is a challenging application because it requires a frequent rate of beaconing. Performance of traditional Carrier Sense Multiple Access with Collision Avoidance method (CSMA/CA) on IEEE 802.11p is unable to satisfy for platooning needs due to unbounded delay especially under high channel load. Several researches about platooning are involved with medium access control (MAC) layer modification in a protocol stack and/or does not support variable number of vehicles and/or have a single point of failure. In this paper, we propose to use a vehicular desynchronization TDMA-based protocol over off-the-shelf IEEE 802.11p, while supporting vehicles joining and leaving a platoon and having no single point of failure. We recommend a range of parameters that are suitable for the platooning application. Our evaluation shows that using our suggested parameters, the vehicular desynchronization protocol could support a high-frequency beaconing with up to 16 vehicles at 100 Hz beaconing.