Quality adaptation scheme for improving QoE of MPEG DASH

MPEG has released a standard of the DASH(Dynamic Adaptive Streaming over HTTP) specification to support QoS(Quality of Service) for multimedia streaming service. Several quality adaptation schemes have been proposed for improving the quality of DASH. However, previous adaptation schemes do not guarantee smooth and seamless playback because they do not considers the VBR characteristics of the contents. In this paper, we propose a QASD(Quality Adaptation Scheme for QoE) for DASH based streaming services. The proposed scheme adjusts the quality of the segments not only based on the network and playback buffer status, but also based on the VBR characteristics of the contents. We implemented proposed scheme in the DASH reference player. Through the simulation results, we have proven that our scheme improves the QoE(Quality of Experience) of multimedia streaming over DASH.