面向移动内容分发网络环境的移动视频预取技术研究进展  

Research progress of mobile video prefetching for mobile content distribution networks

作　　者：张世行 罗雅文 张敏[1] 孙奇福 阳小龙[1] ZHANG Shihang;LUO Yawen;ZHANG Min;SUN Qifu;YANG Xiaolong(School of Computer and Communication Engineering,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]北京科技大学计算机与通信工程学院,北京100083

出　　处：《电信科学》2021年第1期8-21,共14页Telecommunications Science

摘　　要：随着移动互联网的发展和视频应用的普及,移动内容分发网络(MCDN)应运而生。预取技术是内容分发的关键技术之一,它通过预测用户未来的请求,提前将预测的内容预取至网络边缘,从而减少数据的获取时延、提升用户体验质量(QoE)。为深入阐述移动视频预取技术的发展现状,从用户移动行为感知、内容属性感知、网络资源感知等角度分析梳理了移动视频预取技术的最新研究成果,同时分析了各类预取方案的性能及其主要优缺点,最后指出未来可以进一步研究的方向。With the development of mobile internet and the popularization of video applications,the mobile content distribution network(MCDN)emerged as the times require.Prefetching technology is one of the key technologies for content distribution.It predicts the user’s future requests and prefetches the predicted content to the network edge in advance,thereby reducing the data acquisition delay and improving the quality of experience(QoE).In order to elaborate on the development status of mobile video prefetching technology,the latest research results of mobile video prefetching technology were introduced from the perspectives of user’s mobile behavior perception,content attribute perception,and network resource perception.And finally its main advantages and disadvantages were analyzed and the direction of further research in the future was pointed out.

关 键 词：移动内容分发网络 视频预取 用户移动行为 体验质量 

分 类 号：TN91[电子电信—通信与信息系统]