A Self-decision-making Beacon Interval Adjusting Method for VANETs

Abstract

In Vehicular Ad Hoc Network (VANET), rapid movement of vehicles leads to the neighbor information fast outdated. Fast exchange of beacons in high traffic density causes wireless channel congested and overload of VANET. In this article, a Self-Decision-Making Beaconing (SDMB) method is proposed to solve the above issues. In this method, the beaconing interval is adjusted based on node activity and the change rate of its neighbors. Results show that, the successful beaconing rate is closed to or larger than 90% and the normalized channel load is less than 20% in different traffic density by using SDMB.