A method by a wireless local area network (WLAN) termination (WT) node is described. The method includes receiving, from a base station, a first message including bearer related information; identifying access category information based on quality of service (QoS) class identifier (QCI) information included in the bearer related information; transmitting, to the base station, a second message in response to the first message; and transmitting, to a terminal, data based on the access category information.