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An Efficient MAC Protocol for vehicle platooning in automated highway systems

Authors:

Ali Balador, Annette Böhm , Elisabeth Uhlemann, Carlos T. Calafate , Yusheng Ji , Juan-Carlos Cano , Pietro Manzoni

Research group:


Publication Type:

Conference/Workshop Paper

Venue:

Jornadas Sarteco 2015


Abstract

Lately, all the top truck manufacturers are investing considerable resources in the research and development of platooning systems which would allow vehicles to save fuel and improve safety by travelling in a close-following manner. The platoon-ing system requires frequent and reliable vehicle-to-vehicle communications. As platooning takes place in a vehicular ad hoc network, the use of IEEE 802.11p is close to mandatory. However, the 802.11p medium access method suffers from packet collisions and random delays. Most ongoing research suggests using TDMA on top of 802.11p as a potential remedy. However , TDMA requires synchronization and is not very flexible if the beacon frequency needs to be updated, the number of platoon members changes, or if re-transmissions for increased reliability are required. We therefore suggest a token-passing medium access method where the next token holder is selected based on beacon data age. This has the advantage of allowing beacons to be re-broadcasted in each beacon interval whenever time and bandwidth are available. We show that our token-based method is able to reduce the data age and considerably increase reliability considerably compared to pure 802.11p.

Bibtex

@inproceedings{Balador4909,
author = {Ali Balador and Annette B{\"o}hm and Elisabeth Uhlemann and Carlos T. Calafate and Yusheng Ji and Juan-Carlos Cano and Pietro Manzoni},
title = {An Efficient MAC Protocol for vehicle platooning in automated highway systems},
month = {September},
year = {2015},
booktitle = {Jornadas Sarteco 2015},
url = {http://www.es.mdu.se/publications/4909-}
}