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Often real-time systems can run in different modes depending on the external environment or their internal state. Each operational mode is characterized by a set of tasks with different computational demand, resource requirements, and resource availability. When resource reservation is used to achieve temporal isolation among applications, the reservation parameters may need to change from mode to...
In this paper we investigate the problem of reactive on-line bandwidth allocation in adaptive Wireless Sensor Networks. In adaptive WSN for monitoring applications, nodes can react to physical events by adapting their behavior, for instance increasing the amount of computation to be performed, or reducing the amount of consumed energy. Accordingly, the nodes may increase or decrease their bandwidth...
Dynamic power management has become essential for battery-driven embedded systems. This paper explores how to efficiently and effectively reduce the energy consumption of a device (system) for serving multiple event streams. Considering two different preemptive scheduling, i.e., earliest deadline first and fixed priority, we propose new method to adaptively control the power mode of the device according...
Power dissipation has constrained the performance boosting of modern computer systems in the past decade. Dynamic power management (DPM) has been implemented in many systems to change the system (or device) state dynamically to reduce the power consumption. This paper explores how to efficiently and effectively reduce the energy consumption to handle event streams with hard real-time or quality of...
Power dissipation has constrained the performance boosting of modern computer systems in the past decade. Dynamic power management has been widely applied to change the system (or device) state dynamically to reduce the power consumption. This paper explores how to effectively reduce the energy consumption to handle event streams with hard real-time guarantees. We adopt Real-Time Calculus to describe...
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