Validating IPTV service quality under realistic triple play network conditions
This paper discusses a concept of predicting interactions between measurable (technical) parameters of telecommunications network - QoS (Quality of Service) and QoE (Quality of Experience) of the video under realistic triple play network conditions using IPTV (Internet Protocol TV). Here is represented a simulation method using OPNET as simulation tool that includes a complete scenario of IPTV channels distribution in the hypothetical IP / MPLS network. Based on simulation results of the QoS parameters in the network and using of certain well-known regression analysis of QoS/QoE correlation model it is possible to evaluate the quality of the received video perceived by the user. It performs the mapping between quality assessment VQR (Video Quality Ratings), VQM (Video Quality Metric) and DMOS (Difference Mean Opinion Score) subjective rating scales. In that way it performs validation of IPTV service in terms of comparing the original video and the received video by the end user. The aim of this paper is to demonstrate the possibility of video quality validation under laboratory conditions using simulation method.