Preferential Detour of Unimportant Data Stream in Software Defined Networks for Improving Video Transmission Quality

Chih-Heng  Ke; Yun-Shuai Yu

doi:10.6180/jase.201809_21(3).0014

Preferential Detour of Unimportant Data Stream in Software Defined Networks for Improving Video Transmission Quality

Computer Science and Information Engineering

Chih-Heng Ke¹ and Yun-Shuai Yu This email address is being protected from spambots. You need JavaScript enabled to view it.²

¹Department of Computer Science and Information Engineering, National Quemoy University, Kinmen, Taiwan 892, R.O.C.
²Department of Computer Science and Information Engineering, National Formosa University, Yunlin, Taiwan 632, R.O.C.

Received: October 1, 2017
Accepted: March 30, 2018
Publication Date: September 1, 2018

Download Citation: ||https://doi.org/10.6180/jase.201809_21(3).0014

ABSTRACT

For the improvement of video transmission, most current solutions transmit the most important sub-stream of a video by the detour method to avoid a congested link. However, they cannot improve the transmission quality if they fail to find an alternative path with an acceptable transmission delay and sufficient bandwidth resources. Besides, investigations in an experimental software defined network platform found that the transmission quality achieved by the above methods is relatively poor when the path needs to be switched constantly due to rapid changes in network quality. Therefore, this paper proposes a method of preferential detour for unimportant data streams and finds that it can significantly improve the video transmission quality. Simulation results show that the proposed method can increase the throughput of the video by around 10% and enhance the video quality about 0.5 dB at the receiver end.

Keywords: Video Transmission, Software Defined Network, Detour, Unimportant Data Stream

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