On the way to high-quality video calls in future mobile networks
On the way to high-quality video calls in future mobile networks
复制标题
未来移动网络中的高质量视频通话之路
DOI：
10.1109/qomex.2011.6065710
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Sebastian Möller
中科院分区：
文献类型：
--
作者：
Blazej Lewcio;Benjamin Belmudez;Theresa Enghardt;Sebastian Möller
视频电话在未来移动的通信系统中的无缝使用为高质量供应带来了新的挑战。终端移动性和动态变化的网络属性将影响互联网连接的质量，并且因此将损害移动的用户的体验质量（QoE）。为了确保最佳连接的视频通话，将需要跨层调整视听传输以适应网络环境。为了成功地适配传输参数，需要关于在移动的视频呼叫期间的用户感知的知识。本文解决了这个问题，并提出了一个模拟视频通话的质量体验在选定的时间段的研究。动态现象的感知，如网络技术之间的漫游，切换视频和语音编解码器，并在活动呼叫期间改变视频比特率都在调查范围内。所分析的材料的QoE与底层传输特性相关联，这允许在未来无线网络中的移动的视频呼叫期间选择适当的QoE适配策略。
Seamless use of video telephony in future mobile communication systems creates new challenges for high-quality provisioning. Terminal mobility and dynamically changing network properties will affect the quality of the Internet connection and consequently will impair the Quality of Experience (QoE) of mobile users. To ensure best connected video calls, cross-layer adaptation of the audiovisual transmission to the network circumstances will be required. To successfully adapt the transmission parameters, knowledge about the user perception during mobile video calls is required. This paper addresses this issue and presents a study of quality experience during selected periods of emulated video calls. Perception of dynamic phenomena, such as roaming between network technologies, switching the video and speech codecs, and changing the video bit rate during active calls are in scope of the investigation. The QoE of the analysed material is linked to the underlying transmission properties, which allows to select proper strategies of QoE adaptation during mobile video calls in future wireless networks.
DOI：
10.1109/tcsvt.2007.905532
发表时间：
2007-09-01
影响因子：
8.4
作者：
Schwarz, Heiko;Marpe, Detlev;Wiegand, Thomas
通讯作者：
Wiegand, Thomas