Integrated power management for video streaming to mobile handheld devices

Optimizing user experience for streaming video applications on handheld devices is a significant research challenge. In this paper, we propose an integrated power management approach that unifies low level architectural optimizations (CPU, memory, register), OS power-saving mechanisms (Dynamic Voltage Scaling) and adaptive middleware techniques (admission control, optimal transcoding, network traffic regulation). Specifically, we identify interaction parameters between the different levels and optimize them to significantly reduce power consumption. With knowledge of device configurations, dynamic device parameters and changing system conditions, the middleware layer selects an appropriate video quality and fine tunes the architecture for optimized delivery of video. Our performance results indicate that architectural optimizations that are cognizant of user level parameters(e.g. transcoded video quality) can provide energy gains as high as 57.5% for the CPU and memory. Middlewa...

• Type: Conference
• Year: 2003
• Where: MM
• Authors: Shivajit Mohapatra, Radu Cornea, Nikil D. Dutt, Alexandru Nicolau, Nalini Venkatasubramanian
• Keywords: Architectural Optimizations, MM 2003, User Experience, Video Quality