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On the Way to High-Quality Video Calls in Future Mobile Networks
Citation key lewcio2011a
Author Lewcio, Blazej and Belmudez, Benjamin and Enghardt, T. and Möller, Sebastian
Title of Book Third International Workshop on Quality of Multimedia Experience (QoMEX'11)
Pages 43–48
Year 2011
ISBN 978-1-4577-1333-0
DOI 10.1109/QoMEX.2011.6065710
Location Mechelen, Belgium
Address Mechelen, Belgium
Month sep
Publisher IEEE
How Published full
Abstract 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.
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