Methods and apparatuses for activating or deactivating small cells

摘要

The present invention relates to a method for activating or deactivating a cell associated with a second base station added to a terminal as a secondary cell. In more detail, a method for activating or deactivating a cell associated with a second base station, the method comprising: receiving an upper layer signaling received via a first base station after signaling between a first base station and a second base station; Configuring the associated cell to an active state, and configuring a radio bearer via a second base station.