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Mobile Information Systems
Volume 2016 (2016), Article ID 7462821, 7 pages
Research Article

Energy-Reduction Offloading Technique for Streaming Media Servers

1Department of Electrical and Computing Engineering, Seoul National University, Seoul, Republic of Korea
2School of Computer and Information Engineering, Sangji University, Seoul, Republic of Korea

Received 16 August 2015; Revised 25 November 2015; Accepted 26 November 2015

Academic Editor: Javid Taheri

Copyright © 2016 Yeongpil Cho et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Recent growth in popularity of mobile video services raises a demand for one of the most popular and convenient methods of delivering multimedia data, video streaming. However, heterogeneity of currently existing mobile devices involves an issue of separate video transcoding for each type of mobile devices such as smartphones, tablet PCs, and smart TVs. As a result additional burden comes to media servers, which pretranscode multimedia data for number of clients. Regarding even higher increase of video data in the Internet in the future, the problem of media servers overload is impending. To struggle against the problem an offloading method is introduced in this paper. By the use of SorTube offloading framework video transcoding process is shifted from the centralized media server to the local offloading server. Thus, clients can receive personally customized video stream; meanwhile the overload of centralized servers is reduced.