An efficient VANET broadcast protocol based on distance and neighbor list

Vehicular Ad-hoc Networks (VANETs) is a self-organized network formed through mutual communication between vehicles and other vehicles or roadside units. Broadcast is an important protocol in VANET, but it may cause some problems. This paper proposes an efficient broadcasting algorithm that is adaptive to both a straight road and road intersection scenarios, and also has a high accuracy rate, low delay and low consumption. It uses a number of the neighbor nodes' driving direction and the distance from the neighbor to itself as the metric to select a relay node. The simulation results show that the proposed algorithm has several advantages: less rebroadcast packets, broader transmission range, and higher channel utilization.