Today networks are more and more used to implement distributed applications and, in particular, industrial applications like closed loop process control which require a timeliness service to guarantee their performances. The timeliness property depends on the message and task schedulings and the communication protocol. The goal of this paper is to present a pluridisciplinary work which must operate at the distributed control system level (computer science and telecommunication view), at the automation level (automatic control view) and to link these two views.
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