Cooperative energy management in distributed wireless real-time systems |
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Authors: | Dinesh Rajan Christian Poellabauer |
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Affiliation: | (1) Department of Computer Science and Engineering, University of Notre Dame, Notre Dame, IN 46556, USA |
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Abstract: | This work is based on the observation that existing energy management techniques for mobile devices, such as Dynamic Voltage
Scaling (DVS), are non-cooperative in the sense that they reduce the energy consumption of a single device, disregarding potential
consequences for other constraints (e.g., end-to-end deadlines) and/or other devices (e.g., energy consumption on neighboring
devices). This paper argues that energy management in distributed wireless real-time systems has to be end-to-end in nature,
requiring a coordinated approach among communicating devices. A cooperative distributed energy management technique (Co-DVS)
is proposed that (1) adapts and maintains end-to-end latencies within specified timeliness requirements (deadlines) and (2)
enhances energy savings at the devices with the highest pay-off factors that represent the relative benefits or significance of conserving energy at a device. The proposed technique employs a feedback-based
approach to dynamically distribute end-to-end slack among the devices based on their pay-off factors. |
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Keywords: | |
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