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• 计算机图形学与虚拟现实 • 上一篇    下一篇

移动互联网下视频时延的用户体验质量研究

  

  1. (1. 湖南大学汽车车身先进设计制造国家重点实验室，湖南长沙 410082；
    2. 湖南大学设计艺术学院，湖南长沙 410082)
  • 出版日期:2020-06-30 发布日期:2020-08-18
  • 基金资助:
    湖南省社会科学基金项目(2010YBA054)；湖南省研究生科研创新项目(CX2016B111)；湖南大学青年教师成长计划项目资助

Research on user experience quality about the time delay of videos on mobile internet

  1. (1. State Key Laboratory of Advanced Design and Manufacture for Vehicle Body, Hunan University ,Changsha Hunan 410082, China;
    2. School of Design, Hunan University, Changsha Hunan 410082, China)
  • Online:2020-06-30 Published:2020-08-18

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摘要： 随着移动互联网的发展，移动视频业务的迅速爆发，良好的用户体验质量(QoE)
成为运营商挽留用户的关键因素。从用户体验角度，建立不同时延下移动视频业务的评价量化
标准。通过情景实验模拟的方法，以平均主观意见分(mean opinion score，MOS)量表建立用户
视频体验质量的实数映射关系。针对用户对视频观看时延的有效反应进行分级研究，得到以下
结果：单次和多次的初始缓冲时延和卡顿时延对用户观看移动视频的影响并建立用户体验质量
评价等级。在短视频中出现单次时延在4 s 以上，用户会出现负面情绪；在相同延迟时长下，
单次的初始缓冲时延的用户体验质量略优于卡顿时延；对于在一定播放时长的移动视频业务中
出现多次卡顿，卡顿时延短但是间隔频繁的体验质量比卡顿时延长但是间隔时间长的体验质量
要更差。

关键词: 移动互联网, 体验质量, 缓冲时延, 卡顿时延, 平均主观意见分量表

Abstract: With the development of mobile Internet and the rapid growth of mobile video services,
satisfactory quality of experience (QoE) has become a key factor for operators to retain users.
Quantitative evaluation criteria was established for mobile video services with different kinds of time
delay from the perspective of user experience. According to the method of scenario simulation, a real
mapping relationship of the user experience quality was proposed in the subjective scale form of the
mean opinion score (MOS). Then a hierarchical study was taken on users’ effective response to
delayed videos. The effect of single and multiple initial buffer time and stalling time on user
experience quality was obtained. Besides, the evaluation level system of user experience quality was
created. In a short video, negative user experience occurs when there is a single delay longer than four
seconds. Under the circumstance of the same delay duration, the user experience quality of the initial
buffer time is slightly better than that of the stalling time. If many delays occur in a certain mobile
video service, compared with a lower frequency of long delays, the short but frequent delays will
bring more negative experience to users.

Key words: mobile internet, user quality of experience, initial buffer time, stalling time, mean opinion score subjective scale form