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Vehicle-to-Vehicle Communication: Fair Transmit Power Control for Safety-Critical Information

Torrent-Moreno, Marc 1; Mittag, Jens 2; Santi, Paolo; Hartenstein, Hannes 3
1 Institut für Telematik (TM), Karlsruher Institut für Technologie (KIT)
2 Karlsruher Institut für Technologie (KIT)
3 Scientific Computing Center (SCC), Karlsruher Institut für Technologie (KIT)


Direct radio-based vehicle-to-vehicle communication can help to prevent accidents by providing accurate and up-to-date local status and hazard information to the driver. In this paper, we assume that two types of messages are used for traffic safety-related communication: periodic messages (`beacons') sent by all vehicles to inform their neighbors about their current status (i.e., position), and event-driven messages sent whenever a hazard has been detected. In IEEE 802.11 DCF-based vehicular networks, interferences and packet collisions can lead to failure of reception of safety-critical information, particularly when the beaconing load leads to an almost saturated channel as it could easily happen in many critical vehicular traffic conditions.

In this paper we demonstrate the importance of transmit power control for avoiding saturated channel conditions and ensuring best use of the channel for safety-related purposes. We propose a distributed transmit power control method based on a strict fairness criterion, D-FPAV, to control the load of periodic messages on the channel. The benefits are twofold: i) bandwidth is made available for higher priority data like dissemination of warnings; ii) beacons from different vehicles are treated with `equal rights' and best possible reception under the available bandwidth constraints is ensured. ... mehr

DOI: 10.1109/TVT.2009.2017545
Zitationen: 474
Zitationen: 455
Zugehörige Institution(en) am KIT Institut für Telematik (TM)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2009
Sprache Englisch
Identifikator ISSN: 0018-9545, 1939-9359
KITopen-ID: 1000014827
Erschienen in IEEE transactions on vehicular technology
Verlag Institute of Electrical and Electronics Engineers (IEEE)
Band 58
Heft 7
Seiten 3684-3707
Nachgewiesen in Dimensions
Web of Science
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