Cooperative collision warning using dedicated short range wireless communications
Proceedings of the 3rd international workshop on Vehicular ad hoc networks
Analysis and design of effective and low-overhead transmission power control for VANETs
Proceedings of the fifth ACM international workshop on VehiculAr Inter-NETworking
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Safety applications are envisioned to be the first Vehicle-to-Vehicle (V2V) applications delivered to the mass market in the near future. In this paper, we address the question of achievable application-level reliability while operating over the Dedicated Short Range Communication (DSRC) channel. We advocate, that this reliability is a cumulative metric, which combines the main application operational requirements bounded with network performance metrics. In this context, we focus on (i) required information freshness and communication range, as main communication performance requirements and (ii) path prediction error, as application operational requirement. We present a novel simulation approach towards quantifying these metrics based on MATLAB vehicle dynamics models coupled with a driver reaction model. The input data for the simulation study is obtained empirically through real world experiments. This allows us to achieve numerical results with high accuracy. Further, based on data gathered in extensive real world measurement campaigns, we assess application-level reliability under different realistic conditions and perform a feasibility analysis of various NLOS scenarios while showing their potential for future V2V applications on the example of the Intersection Collision Warning (ICW). Finally, we investigate whether the packet delivery ratio (PDR) is capable to capture application-level reliability adequately and compare it with the metrics proposed in this work.