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Jansen, D.N. and Hermanns, H.
(2004)
Dependability checking with StoCharts: Is train radio reliable enough for trains?
In: QEST 2004: first international conference on the quantitative evaluation of systems, Enschede, Netherlands.
pp. 250-259.
IEEE Computer Society.
ISBN 0-7695-2185-1
Full text available as:
Official URL: http://dx.doi.org/10.1109/QEST.2004.10038 AbstractPerformance, dependability and quality of service (QoS) are prime aspects of the UML modelling domain. To capture these aspects effectively in the design phase, we have recently proposed STOCHARTS, a conservative extension of UML statechart diagrams. In this paper, we apply the STOCHART formalism to a safety critical design problem. We model a part of the European Train Control System specification, focusing on the risks of wireless communication failures in future high-speed cross-European trains. Stochastic model checking with the model checker PROVER enables us to derive constraints under which the central quality requirements are satisfied by the STOCHART model. The paper illustrates the flexibility and maturity of STOCHARTS to model real problems in safety critical system design.
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