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Peer-to-Peer网络的高效自适应视频流传输算法
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国家自然科学基金项目(50778015)


Adaptive high efficiency video streaming transmission algorithm of Peer-to-Peer networks
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    摘要:

    P2P网络电视的视频流传输过程中网络带宽的利用效率较低,为此提出一种P2P网络电视的自适应视频流传输算法。首先,将目标问题建模为多段流媒体的PSNR最大化问题,通过动态规划算法直接求解目标问题;然后,选择最优的订阅类与传输流媒体类,从而最大化重点区域内的总视频质量;最终,设计了一种新的请求模型来处理无法还原的数据传输,如果接收节点的重点区域中存在无法还原的媒体数据,则该节点向其邻居节点周期地广播其缓存图,以此过滤无法还原的数据传输。基于标准H.264/SVC视频序列的实验结果表明:本算法有效地提高了P2P网络流媒体的带宽利用效率,客户端接收的视频具有较高的质量。

    Abstract:

    Video streaming transmission process shows a low bandwidth usage efficiency in the P2P IPTV applications, an adaptive video streaming transmission algorithm of P2P IPTV is proposed to resolve this problem. Firstly, the target problem is formulated as a multi-segment streaming PSNR maximization problem, the target problem is solved directly through a dynamic programming algorithm; then, the optimal class subscription and class transmission strategy are selected to maximize the total video quality of the important region in the video segment; lastly, a new request model is designed to handle the unrecoverable data transmission, if it exists the unrecoverable media data in the important region of the receive node, it will periodically broadcast its buffer map as a request signal to all neighboring nodes, so that the unrecoverable data transmissions will be filtered. Experimental results based on the standard H.264/SVC video sequence show that the proposed algorithm could improve the bandwidth usage rate of P2P network streaming, and the received videos of the clients will realize a high quality.

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庄翔翔,张福泉. Peer-to-Peer网络的高效自适应视频流传输算法[J].机床与液压,2019,47(24):138-145.
. Adaptive high efficiency video streaming transmission algorithm of Peer-to-Peer networks[J]. Machine Tool & Hydraulics,2019,47(24):138-145

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  • 在线发布日期: 2020-03-12
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