Perceptual experience oriented transmission scheduling for scalable video streaming over cognitive radio networks
Ruixiao Yao, Yanwei Liu, Jinxia Liu, Pinghua Zhao, Song Ci · 2013
Cognitive radio (CR) promotes the utilization of the wireless spectrum through admitting the secondary users to access the primary channels in an opportunistic manner. Therefore, the real-time video streaming over the CR network is challenging due to the time-varying channels. In this paper, we propose an adaptive scalable video transmission scheduling method for video streaming over time-varying channels in CR network, in which the end-to-end perceptual visual experience is optimized systematically by considering various experience-influencing factors of the scalable video source, channel, and receiving buffer. Moreover, an enhanced content-based adaptive video playout scheme is developed to further optimize the end-to-end perceptual visual experience by decreasing the receiving buffer underflow probability. The efficiency and effectiveness of the proposed method has been validated by both analytical study and extensive experimental results.