Enhancing QoE for Mobile Users by Environment-Aware HTTP Adaptive Streaming.

Enhancing QoE for Mobile Users by Environment-Aware HTTP Adaptive Streaming.
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通过环境感知 HTTP 自适应流媒体增强移动用户的 QoE

DOI:
10.3390/s18113645
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发表时间:
2018-10-27
期刊:
Sensors (Basel, Switzerland)
影响因子:
--
通讯作者:
Zheng Q
Zheng Q
中科院分区:
其他
文献类型:
--
作者:
Zhang W;He H;Ye S;Wang Z;Zheng Q

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HTTP 自适应流媒体 (HAS) 已成为当今互联网中占主导地位的媒体流范例,它通过将视频质量与动态网络条件相匹配来丰富用户的体验。人们提出了一系列 HAS 机制来提高体验质量 (QoE)。然而,现有机制在移动用户的QoE评估中忽略了环境影响,而移动视频的普及使得用户可以在多样化的场景下观看视频。在本文中,我们提出了一种环境感知的HAS方案,该方案充分关注不同环境下评估视频QoE的不同标准。该方案利用手机传感器的优势,构建并验证了基于环境感知的视频QoE模型,然后设计了模型驱动的环境感知HAS速率自适应算法。我们还在真实的移动环境中使用环境感知的 DASH(基于 HTTP 的动态自适应流)播放器来评估该方案。与基准HAS机制相比,实验结果表明,我们的方案可以针对不同环境提供适当的差异化速率自适应,从而获得更高的QoE。
HTTP adaptive streaming (HAS) has become a dominated media streaming paradigm in today’s Internet, which enriches the user’s experience by matching the video quality with the dynamic network conditions. A range of HAS mechanisms have been proposed to enhance the Quality of Experience (QoE). However, existing mechanisms ignore the environmental impact in the QoE evaluation of mobile users, while the popularity of mobile video allows users to watch videos in diversified scenarios. In this paper, we propose an environment-aware HAS scheme that fully concentrates on the different criteria for evaluating video QoE under different environments. Using the advantage of the sensors in mobile phones, the scheme constructs and validates a video QoE model based on environment perception and then designs a model-driven, environment-aware HAS rate adaptation algorithm. We also evaluate the scheme with an environment-aware DASH (Dynamic Adaptive Streaming over HTTP) player in real mobile environments. Compared to the benchmark HAS mechanism, the experimental results demonstrate that our scheme can provide appropriate differentiated rate adaptation for different environments, resulting in a higher QoE.
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