QoE-Oriented Two-Stage Resource Allocation in Femtocell Networks

In this paper, we study the radio resource allocation for femtocell networks in orthogonal frequency division multiple access (OFDMA) systems from the aspect of users´ quality of experience (QoE). Three types of services are considered including audio stream, data stream and video stream. With the metric being mean opinion score (MOS), a two-tier network is modeled and optimization problem is formulated for maximizing the system performance with lower consumed power. Given the Weber-Fechner Law, we investigate the logarithmic nature of QoE. Afterward, a two-stage iterative algorithm is proposed to resolve such optimization problem. Simulation results show that the overall MOS achieved is significantly higher than the traditional algorithm with a lower power consumption.