Abstract
In Vehicular Ad-Hoc Network (VANET), fast and reliable emergency message dissemination among vehicles on the road has positive significance. Besides, the topology of VANET is dynamic and we need to consider the adaptability of message dissemination scheme to different scenarios. By studying the relation between reliable broadcast scheme and different effect factors, we improve the equation of contention window. To meet the needs of multidimensional scenarios, we propose a novel topology-aware broadcast scheme. Each node monitors its neighbors’ state according to a FSM (finite-state machine) and transmits the information to proper nodes. The advantages of our scheme are that it enhances the transmission reliability in multidimensional scenarios and improves self-adaptability in dynamic VANET with low propagation latency. By evaluating the proposed solution, our scheme is implemented and simulation results are provided.
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