A Survey on Vehicular Communication Methods

Recently, interest in vehicular applications has increased such as autonomous driving and vehicle platooning. The importance of supporting driving safety is becoming more prominent. In order to provide driving safety, the vehicle to vehicle (V2V) communication standard stipulates that a vehicle safety message is periodically broadcasted to nearby vehicles every 100 ms. However, as the number of vehicles on the road increases, communication channels become easily congested, making it difficult to transmit and receive safety messages thereby increase the risk of traffic accidents. In order to address the problem, various V2V communication methods that improve the existing channel contention method have been proposed. In this paper, we introduce and analyze the communication methods for vehicular communications.