Analysis of channel utilization for controller area networks

Authors:
José Luis Sevillano;Arturo Pascual;Gabriel JiméNez;AntóN Civit-Balcells
Affiliations:
Facultad de Informática, Universidad de Sevilla, Avda. Reina Mercedes, s/n. 41012, Seville, Spain;Facultad de Informática, Universidad de Sevilla, Avda. Reina Mercedes, s/n. 41012, Seville, Spain;Facultad de Informática, Universidad de Sevilla, Avda. Reina Mercedes, s/n. 41012, Seville, Spain;Facultad de Informática, Universidad de Sevilla, Avda. Reina Mercedes, s/n. 41012, Seville, Spain
Venue:
Computer Communications
Year:
1998

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Abstract

In this paper, a model for the analysis of the CAN protocol is presented, extending the analysis already developed for fixed priority multiprocessors. Two cases are considered, which correspond to the main commercial devices. The model allows us to obtain some useful results for the design of CAN-based systems. The main conclusions are those regarding bus utilization, both total and per priority level. The results are validated using simulation. Finally, the real-time behavior is also briefly discussed.