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A reliable token-based MAC protocol for delay sensitive platooning applications

Authors:

Ali Balador, Annette Böhm , Elisabeth Uhlemann, Carlos T. Calafate , Juan-Carlos Cano

Research group:


Publication Type:

Conference/Workshop Paper

Venue:

IEEE Vehicular Technology Conference


Abstract

Platooning is both a challenging and rewarding application. Challenging since strict timing and reliability requirements are imposed by the distributed control system required to operate the platoon. Rewarding since considerable fuel reductions are possible. 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 retransmissions 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{Balador4205,
author = {Ali Balador and Annette B{\"o}hm and Elisabeth Uhlemann and Carlos T. Calafate and Juan-Carlos Cano},
title = {A reliable token-based MAC protocol for delay sensitive platooning applications},
month = {September},
year = {2015},
booktitle = {IEEE Vehicular Technology Conference},
url = {http://www.es.mdh.se/publications/4205-}
}