Adaptive Cooperative Awareness Messaging for Enhanced Overtaking Assistance on Rural Roads
2011 (English)In: IEEE Vehicular Technology Conference (VTC Fall 2011), Piscataway, N.J.: IEEE Press, 2011, 1-5 p.Conference paper (Refereed)
Cooperative traffic safety applications such as lane change or overtaking assistance have the potential to reduce the number of road fatalities. Many emerging traffic safety applications are based on IEEE 802.11p and periodic position messages, so-called cooperative awareness messages (CAM) being broadcasted by all vehicles. In Europe, ETSI defines a periodic report rate of 2 Hz for CAMs. Although a high report rate is the key to early hazard detection, the 2 Hz rate has been chosen to avoid congestion in settings where the vehicle density is high, e.g., on major highways and in urban scenarios. However, on rural roads with a limited number of communicating vehicles, a report rate of 2 Hz leads to unnecessary delay in cooperative awareness. By adapting the CAM report rate depending on the specific application and road traffic density, and by making use of the priority levels provided by the 802.11p quality of service mechanism, we show that hazards can be detected earlier and the available bandwidth is used more efficiently, while not overexploiting the network resources.
Place, publisher, year, edition, pages
Piscataway, N.J.: IEEE Press, 2011. 1-5 p.
, IEEE Vehicular Technology Conference (VTC Fall), ISSN 1090-3038 ; 2011
access protocols, mobile radio, road traffic, cooperative traffic safety, telecommunication standards, telecommunication traffic, wireless LAN
Engineering and Technology
IdentifiersURN: urn:nbn:se:hh:diva-16467DOI: 10.1109/VETECF.2011.6093162ISI: 000298891500350ScopusID: 2-s2.0-83755181459ISBN: 978-1-4244-8328-0OAI: oai:DiVA.org:hh-16467DiVA: diva2:448695
4th International Symposium on Wireless Vehicular Communications (WIVEC 2011), San Fransisco, USA, September 5-6, 2011
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Category number CFP11VTF-ART; Code 878442011-10-182011-10-182014-11-19Bibliographically approved