A Robust and Smart Approach to Message Broadcasts in Vehicular Ad Hoc Networks for Emergency

Vehicular ad hoc networks are designed to provide safety and comfort for drivers and passengers. In these networks, many topological changes create many challenges for efficient data delivery. The data dissemination method can meet the needs of emergency message broadcasting. Disseminating data on these networks is a complex and vital task because the highly variable speeds of vehicles increase communication gaps. In these networks, fast and guaranteed high delivery of packets is essential. In this paper, a method is proposed in which the dedicated short range communication (DSRC) channel is divided into three different types of priorities for beacon messages. A dynamic receiver is defined for each class to broadcast the message. The technique of considering the intermediate condition between the source node and the sender node is used to prevent the broadcast of redundancy and the optimal use of bandwidth. The proposed method does not require any hardware or central controller. In order to analyze the efficiency, the proposed method is compared with ASPBT and aadaptive data dissemination protocol (AddP) methods. The analytical evaluation and simulation results show that our proposed method is superior to other methods in terms of efficiency.