Sanjoy Baruah, Thidapat Chantem, N. Fisher, Fatima Raadia
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A Scheduling Model Inspired by Security Considerations
Safety-critical embedded systems such as autonomous vehicles typically have only very limited computational capabilities on board that must be carefully managed to provide required enhanced functionalities. As these systems become more complex and inter-connected, some parts may need to be secured to prevent unauthorized access, or isolated to ensure correctness. We propose the multi-phase secure (MPS) task model as a natural extension of the widely used sporadic task model for modeling both the timing and the security (and isolation) requirements for such systems, and develop corresponding scheduling algorithms and associated schedulability tests.