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    National Tsing Hua University Institutional Repository > 電機資訊學院 > 電機工程學系 > 期刊論文 >  A Control-Theoretic Approach to Rate Adaption for DASH Over Multiple Content Distribution Servers


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/83641


    Title: A Control-Theoretic Approach to Rate Adaption for DASH Over Multiple Content Distribution Servers
    Authors: Chao Zhou;Chia-Wen Lin;Xinggong Zhang;Zongming Guo
    教師: 林嘉文
    Date: 2014
    Publisher: Institute of Electrical and Electronics Engineers
    Relation: IEEE Transactions on Circuits and Systems for Video Technology, Institute of Electrical and Electronics Engineers, Volume 24, Issue 4, April 2014, Pages 681-694
    Keywords: Control-Theoretic Approach
    DASH
    Multiple Servers
    Rate Adaption
    dynamic adaptive streaming over HTTP (DASH)
    Abstract: Recently, dynamic adaptive streaming over HTTP (DASH) has been widely deployed on the Internet. However, the research about DASH over multiple content distribution servers (MCDS-DASH) is limited. Compared with traditional single-server DASH, MCDS-DASH is able to offer expanded bandwidth, link diversity, and reliability. It is, however, a challenging problem to smooth video bitrate switching over multiple servers due to their diverse bandwidths. In this paper, we propose a block-based rate adaptation method considering both the diverse bandwidths and feedback buffered video time. In our method, multiple fragments are grouped into a block and the fragments are downloaded in parallel from multiple servers. We propose to adapt video bitrate at the block level rather than at the fragment level. By dynamically adjusting the block length and scheduling fragment requests to multiple servers, the requested video bitrates from the multiple servers are synchronized, making the fragments download in an orderly way. Then, we propose a control-theoretic approach to select an appropriate bitrate for each block. By modeling and linearizing the rate adaption system, we propose a novel proportional-derivative controller to adapt video bitrate with high responsiveness and stability. Theoretical analysis and extensive experiments on our network testbed and the Internet demonstrate the good efficiency of the proposed method.
    Relation Link: http://www.ieee.org/
    URI: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/83641
    Appears in Collections:[電機工程學系] 期刊論文
    [光電研究中心] 期刊論文

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