| 移动互联网下视频时延的用户体验质量研究 |
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| 引用本文： | 谭浩,孙家豪. 移动互联网下视频时延的用户体验质量研究[J]. 图学学报, 2020, 41(3): 350. DOI: 10.11996/JG.j.2095-302X.2020030350 |
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| 作者姓名： | 谭浩 孙家豪 |
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| 作者单位： | (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) |
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| 基金项目： | 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 |
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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。
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| 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 |
Research on user experience quality about the time delay of videos on mobile internet |
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| TAN Hao,SUN Jia-hao. Research on user experience quality about the time delay of videos on mobile internet[J]. Journal of Graphics, 2020, 41(3): 350. DOI: 10.11996/JG.j.2095-302X.2020030350 |
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| Authors: | TAN Hao SUN Jia-hao |
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| Affiliation: | (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) |
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| 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 timedelay from the perspective of user experience. According to the method of scenario simulation, a realmapping relationship of the user experience quality was proposed in the subjective scale form of themean opinion score (MOS). Then a hierarchical study was taken on users’ effective response todelayed videos. The effect of single and multiple initial buffer time and stalling time on userexperience quality was obtained. Besides, the evaluation level system of user experience quality wascreated. In a short video, negative user experience occurs when there is a single delay longer than fourseconds. Under the circumstance of the same delay duration, the user experience quality of the initialbuffer time is slightly better than that of the stalling time. If many delays occur in a certain mobilevideo service, compared with a lower frequency of long delays, the short but frequent delays willbring more negative experience to users. |
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| Keywords: | mobile internet user quality of experience initial buffer time stalling time mean opinion score subjective scale form |
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