IEMEK Journal of Embedded Systems and Applications (대한임베디드공학회논문지)

Institute of Embedded Engineering of Korea (대한임베디드공학회)
권호 표지

Power Management for Mobile Terminal

모바일 단말에서의 전원관리 기술

  • 이정희 (한국전자통신연구원 임베디드OS연구팀) ;
  • 박호준 (한국전자통신연구원 임베디드OS연구팀) ;
  • 김재명 (한국전자통신연구원 임베디드OS연구팀)
  • Received : 2007.09.14
  • Accepted : 2007.11.26
  • Published : 2007.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

As the performance of the mobile terminal becomes higher, the power consumption gradually increases. As a result, power management is one of the most important issues in mobile system with battery. In this paper, we describe an DPM(Dynamic Power Management) using DVS(Dynamic Power Management) as a power management mechanism in Qplus operating system. DVS generally considers a specific device such as CPU, whereas we consider the relations with other hardware components as well as each component. We specially focus on the relation between CPU, memory and LCD devices. We also designs a kernel monitor to collect information to decide the policy for power management. According to the experimental results, the proposed method enables to save much power.

Keywords