a light architecture for opportunistic vehicle-to-infrastructure communications
The development of the Intelligent Transportation Systems (ITS) highlights the need of connecting vehicles to the infrastructure. Indeed, many ITS applications rely on such connections to offer new on board services. The networking architecture allowing vehicle-to-infrastructure (V2I) communication is then a key challenge for new pervasive applications. In this paper, we present an architecture designed for opportunistic vehicles to infrastructure communication. This light architecture allows to transfer data from the vehicles to the infrastructure through IPv4 or IPv6 connections using 3G networks or WiFi access points, depending on their availability. It relies on any VANET routing protocol like geocast or conditional based routing instead of traditional routing. We use conditional transmissions to benefit from its intrinsic discovery facilities, in order to find a gateway towards the infrastructure. We describe the architecture, its implementation and our road testbeds, allowing to conclude on the interest of such an architecture that allows to exploit already installed networks.
v2i ad hoc communications