System-Wide Dynamic Power Management for Portable Multimedia Devices

Authors:
Linwei Niu;Gang Quan
Affiliations:
University of South Carolina, USA;University of South Carolina, USA
Venue:
ISM '06 Proceedings of the Eighth IEEE International Symposium on Multimedia
Year:
2006

Citing 0
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Abstract

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.