Design and experimental evaluation of cooperative adaptive cruise control

Abstract

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A V2X Message Evaluation Methodology and Cross-Domain Modelling of Safety Applications in V2X-enabled E/E-Architectures

“…They furthermore provide a protocol based on utility functions to optimize overall data utilization benefits of arbitrary applications. The latter, however, is not suitable for cooperative safety applications, since it could harm individual applications' real-time constraints [6].…”

“…Therewith, an application specific cost function is to be defined for each application, which weights the data of each node in the NFN. Finally these frames are periodically sent over the internal E/E network via the E/E Architecture Interface to the required safety application like CACC, since they depend on information updated regularly [6].…”

“…In this work we exemplarily specify a cost function for the CACC application as used in our case studies. According to [6] we consider the vehicle ahead with minimum distance and moving in the same direction as most relevant for CACC. Therefore the cost function is similar to the FFN cost function.…”

“…In the different scenarios following these parameters are set to 0.1s, i.e. 10Hz as recommended update rate for CACC applications according to [6]. For DSRC PHY we use a transmit power of 20dBm in order to reach as many vehicles as possible.…”

“…It increases not only wireless channel load but also signature verification efforts and communication latencies in internal E/E networks [5]. The latter is crucial for safety-critical functions like CACC, which rely on information updated periodically [6].…”