Video Service Recovery Mechanism Based on Quality of Experience-Aware in Hybrid Wireless-Optical Broadband-Access Network

摘要

A video service recovery mechanism based on quality of experience (QoE) aware is proposed to unambiguously evaluate the quality of video service and recover the unacceptable video service in hybrid wireless-optical broadband-access network (WOBAN). The QoS parameters are modeled to the objective metric of QoE. Furthermore, the objective metric of QoE is mapped to the subjective MOS value. And the unacceptable video service is recovered by searching for a recovery routing which has better QoE. The recovery rerouting problem is divided to the subproblem of selecting the object mesh portal point and the subproblem of searching the alternate routing. The object mesh portal point is selected by the basis of load balance. And the subproblem of searching alternate routing is addressed by the Dijkstra mechanism to find the path which can provide the best QoE for the video service. Simulation results show that the proposed mechanism can effectively improve the quality of video services.