METHOD AND USER EQUIPMENT FOR SWITCHING TO DUAL CONNECTIVITY IN CARRIER AGGREGATION

摘要

A disclosure of the present specification provides a method in a user equipment (UE). The method may comprise the steps of: activating a second cell when a request message for activation of the second cell by carrier aggregation is received from a first cell of one base station; receiving, from the one base station, a message including a configuration for switching to dual connectivity; and maintaining, without change, and using a configuration used for the second cell by the carrier aggregation after the switching to the dual connectivity.