关键词: 汽车Ad-Hoc网络 速度方向 网络连通性 城市场景

Abstract:

Vehicular ad-hoc network is a special one and the routing in these networks faces many challenges. This paper presents an improved CBF algorithm called ICBF for vehicular ad-hoc networks. The new algorithm can choose the next forwarder more correctly by using speed, direction and distance to set up the timer. It reduces the broadcasting of data packets by making use of the small difference of speed between vehicles in the city scenario. It can also a   ctively sense the road structure and traffic density by a new method of choosing the anchor-based path, so the algorithm performs well in the vehicular  ad-hoc network in the city scenario. Experiments show that in the city scenario ICBF can achieve a higher packet delivery ratio and a lower bandwidth load.

Key words: vehicular ad-hoc network;speed and direction, network connectivity, city scenario