A FAST AND RELIABLE VANET ROUTING PROTOCOL FOR COOPERATIVE ANTI-COLLISION WARNING ON HIGHWAY

摘要

How to prevent rear to rear traffic accidents on highways is an increasingly important topic, but there is no efficient solution yet. To reduce the delay effect of drivers, this paper aims at designing an effective network communication protocol in highly dynamic and fast moving scenarios. A VANET cooperative anti-collision routing protocol is presented based on the strategy of shortest delay first (SDF, in brief), whose main idea is to select a node of the least transmission delay as the forward node from its behind nodes to ensure the least set of forwarding nodes. Comparing with the typical Directional Flooding (DF) protocol, simulation results show that the proposed protocol reduces the number of emergency warning message (EWM) and the transmission latency obviously, costs lower transmission delay and offers higher network reliability.