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Latency and freshness analysis on IMA systems

The Integrated Modular Avionics (IMA) architectures have been defined for sharing communication and computation resources. The aim of this paper is to evaluate latency and freshness properties of functions implemented on IMA platforms. The two contributions are : (1) a modeling approach for IMA platforms based on the tagged signal model and the abstraction of the network, (2) the definition of an evaluation method for these properties based on Integer Linear Programming (ILP). The industrial applicability of the method is showed on an Airbus A380-like platform. We propose a discussion on the significance of the over-approximations induced by the abstraction. This work is supported by the French National Research Agency within the Satrimmap project1.