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Timed automata with urgent transitions

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Abstract.

We propose an extension to the formalism of timed automata by allowing urgent transitions. An urgent transition is a transition which must be taken within a fixed time interval from its enabling time and it has higher priority than other non-urgent transitions enabled in the same state. We give a set of rules formally describing the behavior of urgent transitions and we show that, from a language theoretic point of view, the addition of urgency does not improve the expressive power of timed automata. From a specification point of view, the use of urgent transitions allows shorter and clear specifications of behaviors involving urgency and priority. We use timed automata with urgent transitions for specifying a multicast protocol for mobile computing.

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Authors and Affiliations

  1. Dipartimento di Informatica,, Universitá di Pisa,, via F. Buonarroti, 2 , 56127 , Pisa,, Italy

    Roberto Barbuti & Luca Tesei

Authors
  1. Roberto Barbuti
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  2. Luca Tesei
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Correspondence to Roberto Barbuti.

Additional information

Received: 10 January 2003, Published online: 17 February 2004

A first version of this paper appeared in [15]

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Barbuti, R., Tesei, L. Timed automata with urgent transitions. Acta Informatica 40, 317–347 (2004). https://doi.org/10.1007/s00236-003-0135-6

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  • DOI: https://doi.org/10.1007/s00236-003-0135-6

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