Routing Method Based on Connectivity and Latency in VANET

Abstract

Due to VANET (vehicle ad-hoc network, VANET) has the characteristics of fast node movement and unstable network topology, the data transmission in the network faces the problems of disconnection of communication links and difficult to guarantee delay. Therefore, it is very important to design a routing algorithm that can ensure the stability of the communication link and the efficient data transmission. Based on the traditional GPSR protocol (greedy perimeter stateless routing, GPSR), this paper proposes an improved VANET routing method CL-GPSR, which makes forwarding decisions based on the established link connection time prediction model and delay estimation model. Simulation results show that the proposed CL-GPSR routing method can provide higher packet delivery rate and lower average delay.