A Dynamic Programming Solution for Energy-Optimal Video Playback on Mobile Devices
Joint Authors
Source
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-05-03
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Telecommunications Engineering
Abstract EN
Due to the development of mobile technology and wide availability of smartphones, the Internet of Things (IoT) starts to handle high volumes of video data to facilitate multimedia-based services, which requires energy-efficient video playback.
In video playback, frames have to be decoded and rendered at high playback rate, increasing the computation cost on the CPU.
To save the CPU power, dynamic voltage and frequency scaling (DVFS) dynamically adjusts the operating voltage of the processor along with frequency, in which appropriate selection of frequency on power could achieve a balance between performance and power.
We present a decoding model that allows buffering frames to let the CPU run at low frequency and then propose an algorithm that determines the CPU frequency needed to decode each frame in a video, with the aim of minimizing power consumption while meeting buffer size and deadline constraints, using a dynamic programming technique.
We finally extend this algorithm to optimize CPU frequencies over a short sequence of frames, producing a practical method of reducing the energy required for video decoding.
Experimental results show a system-wide reduction in energy of 27 % , compared with a processor running at full speed.
American Psychological Association (APA)
Song, Minseok& Park, Jinhan. 2016. A Dynamic Programming Solution for Energy-Optimal Video Playback on Mobile Devices. Mobile Information Systems،Vol. 2016, no. 2016, pp.1-10.
https://search.emarefa.net/detail/BIM-1111356
Modern Language Association (MLA)
Song, Minseok& Park, Jinhan. A Dynamic Programming Solution for Energy-Optimal Video Playback on Mobile Devices. Mobile Information Systems No. 2016 (2016), pp.1-10.
https://search.emarefa.net/detail/BIM-1111356
American Medical Association (AMA)
Song, Minseok& Park, Jinhan. A Dynamic Programming Solution for Energy-Optimal Video Playback on Mobile Devices. Mobile Information Systems. 2016. Vol. 2016, no. 2016, pp.1-10.
https://search.emarefa.net/detail/BIM-1111356
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1111356