Online estimation of the remaining energy capacity in mobile systems considering system-wide power consumption and battery characteristics

Donghwa Shin, Kitae Kim, Naehyuck Chang, Woojoo Lee, Yanzhi Wang, Qing Xie, Massoud Pedram

Research output: Chapter in Book/Report/Conference proceedingConference contribution

21 Scopus citations

Abstract

Emerging mobile systems integrate a lot of functionality into a small form factor with a small energy source in the form of rechargeable battery. This situation necessitates accurate estimation of the remaining energy in the battery such that user applications can be judicious on how they consume this scarce and precious resource. This paper thus focuses on estimating the remaining battery energy in Android OS-based mobile systems. This paper proposes to instrument the Android kernel in order to collect and report accurate subsystem activity values based on real-time profiling of the running applications. The activity information along with offline-constructed, regression-based power macro models for major subsystems in the smartphone yield the power dissipation estimate for the whole system. Next, while accounting for the rate-capacity effect in batteries, the total power dissipation data is translated into the battery's energy depletion rate, and subsequently, used to compute the battery's remaining lifetime based on its current state of charge information. Finally, this paper describes a novel application design framework, which considers the batterys state-of-charge (SOC), batterys energy depletion rate, and service quality of the target application. The benefits of the design framework are illustrated by examining an archetypical case, involving the design space exploration and optimization of a GPS-based application in an Android OS.

Original languageEnglish (US)
Title of host publication2013 18th Asia and South Pacific Design Automation Conference, ASP-DAC 2013
Pages59-64
Number of pages6
DOIs
StatePublished - May 20 2013
Event2013 18th Asia and South Pacific Design Automation Conference, ASP-DAC 2013 - Yokohama, Japan
Duration: Jan 22 2013Jan 25 2013

Publication series

NameProceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC

Other

Other2013 18th Asia and South Pacific Design Automation Conference, ASP-DAC 2013
CountryJapan
CityYokohama
Period1/22/131/25/13

ASJC Scopus subject areas

  • Computer Science Applications
  • Computer Graphics and Computer-Aided Design
  • Electrical and Electronic Engineering

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