GeoSVR: A Geographic Stateless VANET Routing

In this paper, we propose Geographic Stateless Vehicular Ad Hoc Network (VANET) Routing (GeoSVR), a novel geographic routing protocol that selects an optimal forwarding route using the width of the road to avoid local maximum and improves the forwarding algorithm to ensure the connectivity of the route between two neighbors in an urban VANET. GeoSVR uses the natural connective feature of an urban map to calculate a forwarding route, the packets are forwarded along it and two modes in typical geographic routing protcols are eliminated. The salient features of optimal forwarding route, restricted forwarding algorithm and stateless routing, make GeoSVR suitable for high speeds and dynamical topologies. We showed that in line and urban scenarios, GeoSVR outperforms other wireless routing protocols such as Ad Hoc On Demand Distance Vector (AODV) and Greedy Perimeter Stateless Routing (GPSR). It significantly increases the packet delivery ratio. Although restricted forwarding algorithm brings more hops, GeoSVR´s latency is almost not affected and is consistently lower than that of AODV.