基于QoE的跨层架构的无线视频传输技术  

QoE Based Cross-layer Video Transmission Technology

作　　者：成刚 Cheng Gang(Nokia Shanghai Bell,Shanghai 200127,China)

机构地区：[1]上海诺基亚贝尔股份有限公司,上海200127

出　　处：《邮电设计技术》2019年第2期63-68,共6页Designing Techniques of Posts and Telecommunications

摘　　要：首先介绍了室内Wi-Fi网络中单播和组播方式进行视频传输的特点和局限,提出基于QoE的跨层架构的视频传输的系统框架,以及该方案下的视频质量的度量方式和指标。基于可分层视频的特点和QoE度量参数,分析了跨层架构中的应用层、MAC层以及物理层之间如何互相配合来系统性地提高视频传输的用户体验的效果。最后归纳了QoE的跨层架构的方案和将来的发展。It first introduces the behavior and constraint for Video transmission over Wi-fi with unicast and multicast approach.Then it gives overview description and framework for the video transmission technology based on QoE and cross-layer architecture.To improve user experience,it introduces two major metrics related with video buffer utilization and playback to measure the performance for this solution.Based on video scalability and QoE metrics,it further analyzes the interoperability of application layer,MAC layer and physical layer that are integrated together as overall layered structure to improve video transfer quality.Finally,it summarizes the architecture solution and future trends of the application based on QoE framework.

关 键 词：视频传输 QOE 分级编码 802.11e 802.11aa 跨层架构 组播转单播 

分 类 号：TN919[电子电信—通信与信息系统]