A decentralized adaptive TDMA scheduling strategy for VANET

In this paper, a decentralized adaptive TDMA scheduling strategy (DATS) for Vehicular Ad-hoc Network (VANET) with the ability of reducing the collision of nodes occupying the same slot is proposed. In DATS, slots are divided into left and right slot sets. The ratio between the two slot sets can be adjusted according to the node density. According to the locations and neighbors´ slots, nodes competition slots in corresponding time slot sets. The simulation experiments show that the DATS has higher successful assignment ratio and lower delay than several existing protocols. Through extensive simulations, we will demonstrate that the proposed strategy can reduce collisions by over 50% with an acceptable overhead.