Abstract
In this paper, we present a calculus for real-time communicating systems. The calculus is an extension of Milner's CCS with explicit time. In SCCS,
means that if P exists at time r, it will proceed to Q at time r + 1. The time delay is exactly one unit. We extend this idea to asynchronous agents by allowing arbitrary delays. We write
to mean that aftert units of time, P will become Q, where ε stands for idling. Based on the notion of bisimulation, two equivalence relations over agents are defined. It has been shown that the strong equivalence is a congruence and the weak one is preserved by all operators except summation and recursion [W90]. Various examples are given to illustrate the approach.
This is a preview of subscription content, log in via an institution to check access.
Preview
Unable to display preview. Download preview PDF.
References
Cardelli L. Real Time Agents, LNCS, 140, 1982.
Koymans R. and Kuiper R. Paradigms for Real-time Systems, LNCS, 331, 1988.
Milner R. A calculus of communicating systems, LNCS 92, 1980.
Milner R. Calculi for Synchrony and Asynchrony, TCS, Vol 25, 1983.
Milner R. Process Constructors and Interpretations, Information Processing 86, H,J. Kugler (ed), Elsevier Science Publishers (Noth-Holland), 1986.
Milner R. Communication and Concurrency, Prentice Hall International Series in Computer Science, 1988.
Moller F. and Tofte C. A Temperal Calculus of Communicating Systems, LFCS report, University of Edingburgh, December 1989.
de Roever W.P. and Hooman J.J.M. Design and Verification of Real-time Distributed Computing: an Introduction to Compositional Methods, Proceeding of the 9th IFIP WG 6.1 International Symposium on Protocol Specification, Testing and Verification, 1989.
Reed G.M. and Roscoe A.W. A Timed Model for Communicating Sequential Processes, LNCS 226, 1986.
Sifakis J. et al. ATP: an Algebra for Timed Processes, Laboratoire de Genie Informatique, IMAG-Campus, B.P.53X, 38041 Grenoble Cedex, France, 1990.
Tofte C. Timing Concurrent Processes, LFCS report, University of Edingburgh, December 1989.
Wang Y. A Calculus of Real-Time Communicating Systems (in preparation), Dept. of Computer Sciences, Chalmers University, Sweden, 1990.
Author information
Authors and Affiliations
Editor information
Rights and permissions
Copyright information
© 1990 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Wang, Y. (1990). Real-time behaviour of asynchronous agents. In: Baeten, J.C.M., Klop, J.W. (eds) CONCUR '90 Theories of Concurrency: Unification and Extension. CONCUR 1990. Lecture Notes in Computer Science, vol 458. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0039080
Download citation
DOI: https://doi.org/10.1007/BFb0039080
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-53048-0
Online ISBN: 978-3-540-46395-5
eBook Packages: Springer Book Archive