An integrated mobility and traffic model for vehicular wireless networks
Proceedings of the 2nd ACM international workshop on Vehicular ad hoc networks
Modeling vanet deployment in urban settings
Proceedings of the 10th ACM Symposium on Modeling, analysis, and simulation of wireless and mobile systems
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Inter-Vehicle Communications (IVC) has the potential to play an important role in many future vehicle and traffic applications. Much of this will occur in the automated vehicle control and safety systems (AVCSS) arena, and to a lesser extent in the Advanced Transportation Management and Information Systems (ATMIS) arena. One such ATMIS application where IVC can be used is in self-organizing, decentralized traffic information systems. These systems do not require extensive infrastructure and management centers to collect and disseminate traffic information. Instead, information can be shared among vehicles through periodic broadcast messages. A simple methodology for this is described in this paper, with a focus on how to modulate power levels and transmission intervals based on both traffic and communication conditions. These techniques are used to avoid excessive packet collisions under high-density traffic conditions and maximize throughput under low-density conditions. Simulation experiments have been carried out using an integrated vehicle traffic/network communication tool for different levels of congestion on the freeway. Results of the simulation runs are given and compared to transmission interval control and power modulation schemes evaluated separately.