Battery Aware Dynamic Voltage Scaling Algorithm for the Discrete Voltage System

摘要：

Battery lifetime has become one of the key control parameter of mobile devices design. Maximizing battery lifetime is a difficult task because of both the nonlinear for battery capacity consumption and the correlation between capacity consumption and battery load. In this paper we address the problem how Dynamic Voltage Scaling (DVS) policy optimizes battery utilization according to battery discharge characteristic for the discrete voltage systems. We analyze the battery discharge characteristic and find that the whole battery discharge takes on a linear discharge phase and a nonlinear discharge phase successively. The proposed DVS policy utilizes different methods to generate the voltage schedule during the different discharge phases. The effectiveness of the proposed policy has been verified using the simulation model for a portable multimedia player (PMP) system. Simulation results show that the policy can effectively reduce battery capacity consumption and increase the workload performed during the battery lifetime.

关键词： dynamic voltage scaling battery linear discharge nonlinear discharge

作者: Xu Shen Li Junsong Jin Hai

作者单位: College of Informatics and Electronics Zhejiang Sci-Tech University Hangzhou, China

会议类型: 国际会议

会议名称: 2010 International Conference on Circuit and Signal Processing(2010年电路与信号处理国际会议 ICCSP 2010)

会议地点: 上海

会议语种:英文

页码: 136-141

在线出版日期: 2010-12-25（万方平台首次上网日期，不代表论文的发表时间）