Bit accurate timing analysis on a frame based CAN model

This paper presents an approach to model the communication protocol CAN on a level that abstracts from the bit representation in order to significantly reduce simulation time for models of distributed applications on heterogeneous communication clusters.A central part of the approach lies in the definition of methods to abstract bit-based behaviour into a frame based model, but to preserve important timing and error characteristics, for which the calculation of the transmitted frame length is an important aspect. The approach uses a-priori simulations to determine specific model parameters like stuff bit distribution and error propabilities. An error classification has been conducted to represent the inherent CAN error handling on frame level, detemining the exact number of bit times, after which a transmission error has been detected, to ensure a high grade of accuracy.