Abstract
A heterogeneous network, where a switched Ethernet backbone interconnects several existing CAN buses via bridges, is a promising candidate to build a large scale network. For real-time applications, deterministic communication is a key issue. A worst-case delay analysis on such a network has to deal with heterogeneity properties, such as different bandwidths, scheduling policies and bridging strategies. In this paper, two approaches are proposed. The first one is based on a hierarchical component-based approach. The second one is an adapted Trajectory approach which integrates heterogeneity properties. Moreover, pessimism introduced by the adapted Trajectory approach is analyzed and an optimization of this approach is proposed.
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