QoE Enhancement of Audiovisual and Haptic Interactive IP Communications by User-Assistance

This paper proposes a scheme of user-assisted QoS control by media adaptive buffering for user-assisted Quality of Experience (QoE) enhancement. The scheme consists of two modes: a manual mode and an automatic mode. Users can switch these two modes according to their inclinations. We deal with four QoS control schemes for comparison: the manual mode only, the automatic mode only, the switching scheme starting with the manual mode, and the switching scheme starting with the automatic mode. We assess the effect of the four schemes, user attributes, and tasks through a subjective experiment. As a result of the experiment, we show that the user-assisted QoS control scheme can enhance QoE. Furthermore, we notice that the proper QoS control scheme depends on the user attributes and tasks.