Abstract: This paper presents a strategy for the design of real-time applications relying on the resource-reservation paradigm, based on a new modelling element that describes the schedulable entities of the applications during the whole design cycle. A virtual view of this element is used first for evaluating a set of constraints that guarantee the application schedulability independently of the execution platform. Then, the element is viewed as a thread that receives the particular scheduling parameters required for a schedulable execution of the application in a specific platform. The purpose of the design process is to make both views compatible.

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