A Rate Control Method for QoE Enhancement of TCP-based Audiovisual and Haptic Interactive Communications

Abstract

This paper proposes a control method for the transmission rate of haptic media to avoid network congestion in audiovisual and haptic interactive communications using TCP. The previous study has proposed a media-adaptive buffering control for QoE enhancement of audiovisual and haptic interactive communications over UDP. Most of the communications on the Internet use TCP. When we communicate audiovisual and haptic using TCP because of some restrictions, communication delay occurs by such as retransmission control, and media output quality degrades. Then, we control the media transmission rate according to network conditions and enhance QoE. We employ an application-level QoS parameter in the judgment of rate control of haptic media. We show that the interactive communication of audiovisual and haptic using TCP is feasible as using UDP through a subjective experiment.