QoE Based Coexistence Mechanism for LTE in Unlicensed Bands

Recently, LTE in unlicensed bands (LTE-U) has become more interested topic because it can support LTE mobile users to work in unlicensed band. In this band, unlicensed band, LTE-U works with different wireless technologies (i.e WiFi, Bluetooth, ZigBee, ...). This coexistence causes several issues due to the different channel access mechanisms between LTE technology and that technologies. Thus, we propose a coexistence mechanism based on Quality of Experience (QoE) instead of the traditional QoS metric. QoE measures the reaction of the user and his experience to a certain application. Simulation results show that the proposed technique enables both WiFi and LTE-U users to operate efficiently and fairly.