Date Added: Nov 2012
Safety message dissemination in a Vehicular Ad hoc NETwork (VANET) is in desperate need of Vehicle-To-Vehicle (V2V) communication with low latency and high reliability. The dynamics of vehicle passing and queuing as well as high mobility create distinctive propagation characteristics of wireless medium and inevitable uncertainty in space-time patterns of the vehicle density on a road. It is therefore of great importance to integrate stochastic geometry of vehicle locations into V2V channel modeling. In this paper, the authors characterize inter-vehicle communication in a random field of vehicles, where a beacon or head vehicle (transmitter) geo-broadcasts safety or warning messages to neighboring client vehicles (receivers) randomly located in a cluster on the road.