Roadside Infrastructure Planning Scheme for the Urban Vehicular Networks

Vehicular ad hoc network (VANET) is an emerging technology for future on-the-road applications. However, because of the vehicle mobility uncertainty, the temporal network fragmentation influences the communication connectivity. The roadside unit (RSU) has been considered to support the Vehicle-to-Infrastructure (V2I) communication and to increase the vehicle-to-vehicle (V2V) communication connectivity. Currently, it is impossible to deploy a large number of RSUs at the initial stage of VAENT due to the expensive installation cost, and the authority limitation. This paper proposes a Connectivity-oriented Maximum Coverage RSU deployment Scheme (CMCS), aiming at the maximum V2I communication performance in urban areas. The paper simulates the V2V&V2I network in a real urban area of Chengdu city in China via NS2 and VanetMobisim simulators. Results show that our RSU deployment scheme is able to cover the majority of vehicles on the road and guarantee the communication performance with a reduced number of RSUs.