A selective DVS technique based on battery residual
- Authors
- Choi, SW; Cha, HJ; Ha, R
- Issue Date
- 1-Feb-2006
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- power management; DVS policy; battery monitoring
- Citation
- MICROPROCESSORS AND MICROSYSTEMS, v.30, no.1, pp.33 - 42
- Journal Title
- MICROPROCESSORS AND MICROSYSTEMS
- Volume
- 30
- Number
- 1
- Start Page
- 33
- End Page
- 42
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/24583
- DOI
- 10.1016/j.micpro.2005.04.001
- ISSN
- 0141-9331
- Abstract
- Conventional research on DVS assumes that the battery, which is the power source of most mobile devices, provides constant power; the battery, however, has unique discharge characteristics due to its chemical properties. Based on the residual characteristics of the battery, this paper presents a practical approach towards a battery-aware DVS mechanism that can easily be applied to conventional operating systems. The proposed policy monitors the battery residual in runtime, classifies the current battery state as one of three-the recovery effect region, the rate capacity region and the alarm region-then applies a suitable DVS algorithm according to each region. which takes advantage of the underlying battery characteristics. Experiments on commercial PDAs (iPAQ5550 and Zaurus SL-860 PDA) running MPEG applications showed that our policy significantly extends the battery lifetime, compared to the conventional DVS method, with only a marginal QoS degradation. (c) 2005 Elsevier B.V. All rights reserved.
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