QoE model based on fuzzy logic system for offload decision in HetNets environment

To cope the surge traffic demand, several approaches are proposed. The HetNet, based on LTE-A and Wi-Fi networks, is one of the promising architecture widely used by operators as the next generation of their cellular networks. In this paper, we propose a new offload schema from LTE-A to Wi-Fi. It is based on new QoE metric called QoE Score which allows to takes into consideration the business value of the users. The QoE Score is given by a fuzzy logic system and used as key metric for offload decision in our algorithm. Results show that more than 65% can be offloaded from LTE-A to Wi-Fi while ensuring a good end user QoE. In addition, it achieves better results compared to our previous multi constraints algorithm.