Abstract:

802.11p is the standard for PHY and MAC promulgated by the IEEE for VANET. Density of vehicles is dynamic in the networks, but IEEE 802.11p protocol does not optimize network performance by adjusting the EDCA parameters dynamically according to network status. In order to solve the problem of low throughput and high collision rate caused by the change of network density, an algorithm is proposed, which dynamically adjust EDCA parameters to improve data throughput. The simulation results indicate that the proposed method can achieve better performance than EDCA.

Key words: VANET;EDCA;QoS1