Analysis of planning constraints for wireless access in vehicular environments with respect to different mobility and propagation models

The number and distance of Road Side Units (RSU) needed for continuous delivery of traffic status information strongly depends not only on the topology of the road but also on traffic density. In this paper the effect of traffic density is analyzed for different mobility patterns in a car environment. Different scenarios as city and urban are considered with stress on motorway scenarios. Also different propagation models and antenna settings are considered. The result will show the distance of RSUs needed to guarantee continuous availability or in contrast the needed traffic density to set up a stand-alone VANET for message dissemination.