移动视频业务QoE自适应测量工具①.PDF

2017 年 第 26 卷 第 2 期 计 算 机 系 统 应 用 ① 移动视频业务 QoE 自适应测量工具 文艺林, 黎文伟 (湖南大学 信息科学与工程学院, 长沙 410082) 摘 要: 针对不同无线环境(3G、WiFi)下获取用户体验质量(Quality of Experience, QoE)数据困难和不精确的问题, 提出一种基于安卓(Android)移动终端视频业务 QoE 的自适应测量方法. 通过实时测量并评估用户在线视频业务 体验质量, 提高用户体验质量评价的准确性和实用性. 为此开发了能自动测量视频 QoE 的工具, 测量服务质量 (Quality of Service, QoS)客观参数, 通过效用函数映射到主观QoE(MOS 值). 通过对理论QoE 评价模型(取自文献) 与用户实际反馈相关性研究改进理论模型. 结果表明, 无线环境下改进的模型测量结果更接近用户实际反馈, 可 以更好地评价QoE. 关键词: 无线环境; 用户体验质量; 安卓移动终端; 在线视频; 效用函数 Adaptive Measuring Tool for Mobile Video Services QoE WEN Yi-Lin, LI Wen-Wei (Department of Information Science and Engineering, Hunan University, Changsha 410082, China) Abstract: An adaptive measurement method is proposed based on Android mobile terminals streaming video services QoE, which is adapted to solve the problem of difficulty and inaccuracy in getting quality of experience(QoE) data under the different wireless environments (3G, WiFi). By measuring and evaluating QoE of online video service in real time, it can be more accurate and practical. Thus, an application that can automatically measure QoE of videos is designed to measure objective quality of service (QoS) parameters and map to the subjective QoE (MOS value) through a utility function. Finally, we improve the theoretical model by studying the correlation between theoretical QoE assessment model (taken from the literature) and actual user feedback. It shows that the results obtained by the improved model measuring, under wireless environment is closer to the actual user feedback, which can better evaluate the QoE. Key words: wireless environment; quality of experience(QoE); Android mobi