A Dynamic Hop Choosing Mechanism for Routing in VANETs

Abstract

Routing in VANETs is challenging because of the frequently changed topology. The dynamic nature is caused by the high speed mobility of vehicles as nodes in the network. Adapting the dynamic topology is the main task during routing in VANETs. Fortunately, the mobility patterns and positons of vehicles in vehicular networks are predicable. Making advantage of these characteristics, this paper presents an improved dynamic hop choosing mechanism. It not only predicts the positions and mobility patterns of vehicles, but also takes into account the vehicular traffic density. Accordingly, the next hop chosen by our mechanism is seldom out of reach even if the topology is quickly changed. Simulation results exhibit that the proposed algorithm improves the packet delivery ratio and reduces the network latency when compared with state of the art protocols.