A communication system according to an embodiment includes: a cellular base station; and a wireless local area network (WLAN) management apparatus configured to manage one or more WLAN access points. The WLAN management apparatus is used for a cellular-WLAN aggregation in which data of a user terminal is transmitted and received using both a cellular communication and a WLAN communication while the user terminal maintains a radio resource control (RRC) connection with the cellular base station. A direct communication path bypassing a core network is established between the cellular base station and the WLAN management apparatus.