A next-hop selection scheme for emergency message propagation in VANETs

This paper presents a next-hop selection scheme in Vehicle Ad hoc Networks (VANETs) for propagating and relaying emergency messages. When road traffic accidents or dangers are detected, the emergency messages will be propagated to nearby vehicles immediately. Choosing a suitable next-hop is very important for the messages´ fast propagation. In this paper, a time-distance headway based next-hop selection scheme is proposed. Compared with conventional distance based scheme, the simulation results indicate that the proposed scheme has much better performances than conventional scheme.