USER TERMINAL, WIRELESS COMMUNICATION SYSTEM, AND WIRELESS COMMUNICATION METHOD

摘要

The purpose of the present invention is to suitably apply control for synchronous dual connectivity and control for non-synchronous dual connectivity in dual connectivity. When an indicator changes while in a state in which either control for synchronous dual connectivity or control for non-synchronous dual connectivity is being applied, a terminal device that communicates with a plurality of cell groups individually configured from one or more cells which use differing frequencies performs one of the following on the basis of the indicator at the point in time at which an event occurred in an upper layer: control for not switching to the other type of control for dual connectivity; and control for switching to the other type of control for dual connectivity only a predetermined number of times.