Tiled-DASH VR Video Streaming: Design and Implementation
Tiled-DASH VR Video Streaming: Design and Implementation
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DOI：
10.1109/iceccme55909.2022.9988103
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发表时间：
2022-11
期刊：
影响因子：
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通讯作者：
Fenghe Hu;Hui Zhou;Yansha Deng;A. Nallanathan;H. Aghvami
中科院分区：
文献类型：
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作者：
Fenghe Hu;Hui Zhou;Yansha Deng;A. Nallanathan;H. Aghvami
通过蜂窝网络支持虚拟现实（VR）吸引了越来越多的关注，并且是5G和6 G网络中有前途的用例。为了实现这一点，需要一种带宽高效的视频传输协议，其中3GPP推荐了通过HTTP的动态自适应流传输的基于瓦片的虚拟现实视频传输（瓦片-DASH）。它介绍了跨传输和视频处理学科领域的复杂系统模型。为了研究这一点，我们建立了一个具有运动预测的瓦片式DASH测试平台，执行业务建模，分析延迟和带宽使用，并测量多种预测算法的性能。实验结果确定了预测水平，段长度和带宽使用之间的权衡，这是文献中没有捕捉到的。
Supporting virtual reality (VR) via cellular networks attracts increasing attention and is a promising use case in the 5G and 6G networks. to achieve this, it calls for a bandwidth-efficient video transmission protocol, where the tiled-based virtual reality video transmission with dynamic adaptive streaming over HTTP (tiled-DASH) is recommended by 3GPP. It introduces complicated system model crossing transmission and video processing subject areas. to investigate this, we build a tiled-DASH testbed with motion prediction, perform the traffic modeling, analyze the delay and bandwidth usage, and measure the performance of multiple prediction algorithms. The experimental results identify the trade-off among prediction horizontal, segment length, and bandwidth usage, which fails to be captured by literature.