Software-based Energy Requirement Measurement for Smartphones

Energy is one of the most limiting factors for Smartphone-based computing. There exist various approaches for optimising or reducing, respectively, energy requirements in this context. In order to evaluate these techniques, one has to comparatively measure energy requirements. Most precise energy measurement is subject to attaching measurement hardware to the energy demanding system components. In this paper, we survey alternative software-based measurement approaches that utilise sensor data gathered from built-in energy-related sensors. We illustrate how they can be used and discuss their applicability while considering different operating systems and energy sensors.