云社交电视的用户视频质量体验

Cloud social TV user video quality experience

近年来,多屏云社交电视将社交体验引入了传统的电视领域中。观看同一内容社交电视的观众虽然来自不同的地方,但是仍然可以通过文本、图像、音频和视频来进行互动,这就在传统体验上增强了社会属性。笔者将社交电视用户体验分为3个要素(用户延迟、视频质量体验和资源利用率),并且提供一个通用算法来提高用户体验。具体来说就是提出了一个基于云计算的最佳播放速率分配方案,最大限度提高整体视频质量体验(QoE)和用户间的延迟上限。实验结果表明,该算法实现了用户间延迟和视频质量的最优组合,并论证了无线信道快速衰弱下的最优性能。

In recent years, multi-screen cloud social TV introduces social experience in the field of traditional TV. While watching the same content of social TV viewers from different places, hut still can interact through text, images, audio and video, which in the traditional experience to enhance the social attributes. In this paper, the social TV user experience is divided into three ele- ments （user delay, video quality experience and resource utilization）, and provides a general algorithm to improve the user experi- ence. Specifically, it is proposed that an optimal playback rate allocation scheme based on cloud computing is proposed to maxi- mize the overall video quality experience （QoE） and the delay between users. Experimental results show that the algorithm can a- chieve the optimal combination of userg latency and video quality, and demonstrates the best performance of the fast fading wireless channel.