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System-Wide Dynamic Power Management for Portable Multimedia Devices

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2 Author(s)
Linwei Niu ; Dept. of Comput. Sci. & Eng., South Carolina Univ., Columbia, SC ; Quan, G.

Energy reduction is critical to increase the mobility and battery life for today's pervasive portable computing systems. At the same time, energy reduction must be subject to the real-time constraints and quality of service (QoS) requirements for multimedia applications running on many of these systems. This paper presents a novel run-time scheduling approach to reduce the system-wide energy consumption for such systems. In this paper, the multimedia applications are modeled using a popular weakly hard realtime model, i.e., the (m,k)-model. Our experimental results show that, by judiciously scheduling the real-time tasks and shutting down the processor and/or peripheral devices, our approach can lead to significant energy savings while guaranteeing the (m,k) firm deadlines at the same time

Published in:

Multimedia, 2006. ISM'06. Eighth IEEE International Symposium on

Date of Conference:

Dec. 2006