IP Quality of Service
Proceedings of the 2004 ACM workshop on Next-generation residential broadband challenges
The effectiveness of a QoE-based video output scheme for audio-video ip transmission
MM '08 Proceedings of the 16th ACM international conference on Multimedia
Realization of the next-generation network
IEEE Communications Magazine
Adaptive media playout for low-delay video streaming over error-prone channels
IEEE Transactions on Circuits and Systems for Video Technology
Intrastream synchronization for continuous media streams: a survey of playout schedulers
IEEE Network: The Magazine of Global Internetworking
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This paper identifies factors affecting QoE (Quality of Experience) of interactive audiovisual communications over bandwidth guaranteed IP networks and finds how to maximize QoE in that environment. Among the factors, we focus on the guaranteed bandwidth between the terminals, video encoding bit rate, the playout buffering time, and task. Under the condition that the guaranteed bandwidth for video is kept constant for a given amount of the guaranteed bandwidth for audio, we made experiment on QoE assessment for various values of the video encoding bit rate and playout buffering time. We suppose two kinds of task: one is audio-dominant, while the other is a task whose video affects QoE more than the former. As a result of the experiment, we see that an appropriate selection of the pair of the video encoding bit rate and playout buffering time maximizes QoE for the guaranteed bandwidth for video. Furthermore, we notice that the playout buffering time should be carefully chosen especially for the latter task.