Topics: Voice and video; Design and QoS/QoE evaluation of networked apps
Authors: Christian Moldovan and Florian Metzger (University of Duisburg-Essen, Germany)
Presenter bio: Christian Moldovan received his Master's degree in Computer Science in 2014 from the Univsersity of Würzburg. Currently, he is a researcher at the University of Duisburg-Essen and pursuing his Ph.D. His research mainly focuses on performance modeling of mechanisms for multimedia applications in the Internet.
Abstract: On video streaming platforms, users expect a high QoE. In contrast,
service and content providers aim at high User Engagement, most notably
because their revenue is usually dependent on it. In order to satisfy
users, it is critical to know how QoE is related to the User Engagement.
However, no model for this relation exists yet. Current approaches to
managing QoE are usually based on traffic analysis. However, in the
future Internet this will become more difficult since the encryption of
Internet traffic progresses.
In this paper, we present an approach to bringing QoE and User
Engagement together with video streaming as the use case. We do this by
fitting existing measurement data of User Engagement to obtain a model.
Furthermore, we extend the existing queuing model for QoE and
investigate the correlation between QoE and User Engagement in a
simulation. Hereby, we model different scenarios where we quantify
network bandwidth and video requirements.
Our results show that there is a strong correlation between QoE and User
Engagement. Additionally, we observe that simple buffer policies that
do not rely on buffer information can still perform well. These
revelations open the way for new approaches to QoE Management in the