A filtering concept for improving the angle-based forwarding scheme in Vehicular Ad-Hoc Network communications

Vehicular Ad-hoc Network (VANET) communications are mobile communication alternatives allowing vehicles to exchange information among them with a suitable forwarding scheme. The forwarding scheme is a mechanism to select proper candidate nodes as the intermediate node. Current angle-based forwarding schemes take into account a Horizontal Relative Angle (HRA) and propose Vertical Relative Angle (VRA) as an alternative. The introduction of a filtering concept, implementing both HRA and VRA, restricts the number of insignificant candidates. Under various VANET communication factors (e.g., network density, mobility, and road level topology) the work presented here investigates the VRA scheme to improve the forwarding decision especially in the three-dimensional case within a large city environment.