Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Efficient rate-adaptive certificate distribution in VANETs

: Bittl, Sebastian; Aydinli, Berke; Roscher, Karsten

Postprint urn:nbn:de:0011-n-3642108 (285 KByte PDF)
MD5 Fingerprint: 78ed6d58f595e54b6e7bfc7c8004e1f1
© IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Created on: 30.4.2016

Institute of Electrical and Electronics Engineers -IEEE-:
IEEE International Symposium on Wireless Communication Systems, ISWCS 2015. Proceedings : 25-28 August 2015, Brussels, Belgium
Piscataway, NJ: IEEE, 2015
ISBN: 978-1-4673-6540-6 (print)
ISBN: 978-1-4673-6539-0 (USB)
International Symposium on Wireless Communication Systems (ISWCS) <12, 2015, Brussels>
Conference Paper, Electronic Publication
Fraunhofer ESK ()
VANET; vehicular ad hoc network; Car-to-x; Car2X; certificate; certificate distribution; pseudonym certificate; ETSI ITS standard; rate-adaptive certificate distribution; performance; security; automotive connectivity

Car-to-X communication systems, often called vehicular ad-hoc networks (VANETs), are in the process of entering the mass market in upcoming years. Thereby, security is a corepoint of concern due to the intended use for safety critical driver assistance systems. However, currently suggested security mechanisms introduce significant overhead into Car-to-X systems in terms of channel load and delay. Especially, the usage of on the fly distributed pseudonym certificates leads to a trade off between channel load and authentication delay, which may lead to significant packet loss. Thus, this work studies a novel concept for pseudonym certificate distribution in VANETs using rate-adaptive certificate distribution based on monitoring a vehicle’s environment. Thereby, the cyclic certificate emission frequency is adapted on the fly based on cooperative awareness metrics for discrete parts of the vehicle’s surrounding. The obtained mechanism is evaluated in a highway as well as an urban simulation scenario to show its suitability for a broad range of traffic conditions. Thereby, we find that it is able to significantly outperform the currently standardized approach for pseudonym certificate distribution in VANETs based on ETSI ITS standards. Thus, it should be regarded for further development of future VANETs.