Content-Aware Video QoE Coverage Analysis in Heterogeneous Wireless Networks

With quality of experience (QoE) taking a center stage in the evaluation of wireless telecommunication system, optimizing the performance of heterogeneous wireless networks (HWNs) is in need of taking service QoE into consideration. End to end QoE of video services in HWN is determined by not only the network but also the video characteristics. In this paper, a metric termed as QoE coverage is proposed to evaluate the coverage performance of HWNs for video services. First, subjective quality test is performed to improve the existing video quality prediction model, and the expression of QoE coverage is derived by combining video and network parameters. Second, two QoE provisioning schemes, i.e., homogeneous and heterogeneous quality thresholds of HWN are analyzed to show the mathematic properties. Third, a Monte Carlo simulation is performed to show its differences to SINR coverage. Compared with state-of-the-art SINR coverage, QoE coverage takes both physical layer and application layer parameters into consideration and provides more realistic user satisfactory. Results show that QoE coverage can be well maintained by adjusting target QoE thresholds, modulation and coding schemes with different videos.