Exploiting spatiotemporal and device contexts for energy-efficient mobile embedded systems
Proceedings of the 49th Annual Design Automation Conference
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We present an effective power reduction scheme for recent mobile devices, e.g., Android devices, which tend to have problems with battery life because some of their applications may be running continuous sensor operations. We propose a context-aware method to determine the minimum set of resources (processor cores and peripherals) that results in meeting a given level of performance. With it, unnecessary processor cores and peripherals can be switched-off without degrading overall performance. Our experimental results indicate that its use can result in a 45% reduction in total power consumption. Since our method does not require applications to be modified, it can even be used easily with downloaded applications.