4G网络的移动视频体验评估研究

Study on mobile video experience evaluation over 4G network

随着4G技术的普及和互联网快速发展,OTT视频、直播等视频业务迅速爆发,移动视频业务逐渐成为最主要的流量入口,因此需要一系列的指标来衡量4G移动网络下的视频质量,进而反映用户在观看视频的体验。当前衡量视频体验评估的研究中,主要方法是基于服务质量(quality of service,QoS)和基于用户体验质量(quality of experience,QoE),QoS没有考虑用户的主观评价,不能有效地衡量视频质量和用户体验。基于QoE的方法从用户观看视频的主观要素和客观要素出发,能够有效地反映观看视频带给用户的体验。本文研究了无线参数、视频参数、播放参数和终端参数对移动视频体验的影响,基于层次模型(analytic hierarchy process,AHP)建立了移动视频体验评估模型,并开发了基于ijkplayer视频播放器框架的视频体验评估软件VideoMos,评估准确率达到71.57%,具有一定的参考价值。

With the rapid development of 4 Gnetwork and the Internet,OTT video and live video outbreak rapidly,the mobile video business has gradually become the most important flow entry,so we need a series of indicators to measure video service performance over 4 G mobile network.Current main method is based on the quality of service（QoS）and the quality of experience（QoE）.QoS does not take into account users’ subjective opinion and fail to measure video quality and user experience effectively.The approach based on the QoE involves the user subjective factor while watching video and objective factor,which can reflect user mobile video experience effectively.This paper studies the influence of wireless parameters,video quality,playback quality and terminal parameters on the mobile video experience,establishes the mobile video experience evaluation model based on Analytic Hierarchy Process（AHP）,and developed the video experience evaluation software VideoMos based on the ijkplayer video player framework and accuracy rate reached 71.57%,with a certain reference value.