Abstract: To enhance the QoS of data service in vehicular Ad-hoc network, we improved the data transmission control mechanism on technology of Wireless Access in Vehicular Environment(WAVE) and proposed a cross-layer data transmission control scheme based on Active Notify of vehicular Ad-hoc network node(Active Notify EDCA, AN-EDCA).Simulation results indicate, AN-EDCA cross layer data transmission control mechanism efficiently enhances the throughput and guarantees the QoS of data service in vehicular Ad-hoc network.

Key words: Vehicular Ad-hoc network,Data transmission control,Quality of service