期刊名称：International Journal of Innovative Research in Computer and Communication Engineering
印刷版ISSN：2320-9798
电子版ISSN：2320-9801
出版年度：2015
卷号：3
期号：7
DOI：10.15680/ijircce.2015.0307144
出版社：S&S Publications
摘要：some insight and background into the Dynamic Adaptive Streaming over HTTP (DASH) specificationsas available from 3GPP and in draft version also from MPEG. Specifically, the 3GPP version provides a normativedescription of a Media Presentation, the formats of a Segment, and the delivery protocol. In addition, it adds aninformative description on how a DASH Client may use the provided information to establish a streaming service forthe user. In order to maintain high video streaming quality while reducing the wireless service cost, the optimal videostreaming process with multiple links is formulated as a Markov Decision Process (MDP). The reward function isdesigned to consider the Quality of service (QoS) requirements for video traffic, such as the startup latency, playbackfluency, average playback quality, playback smoothness and wireless service cost. To solve the MDP in real time,propose an adaptive, best-action search algorithm to obtain a sub-optimal solution. To evaluate the performance of theproposed adaptation algorithm, implemented a testbed using the Android mobile phone and the Scalable Video Coding(SVC) codec. Experiment results demonstrate the feasibility and effectiveness of the proposed adaptation algorithm formobile video streaming applications, which outperforms the existing state-of-the-art adaptation algorithms.
关键词：DASH; quality of service; Markov Decision Process; Video Coding
