SCG Secondary Cell Group SCell METHOD FOR DEACTIVATING SCELLS DURING SCG CHANGE PROCEDURE AND A DEVICE THEREFOR

摘要

The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and apparatus for deactivating a SCell during an SCG change procedure, the method comprising the steps of: receiving a Primary Cell (PCell) in a master base station and a Primary- Secondary Cell (PSCell) and one or more secondary cells (SCCell); Receiving a radio resource control (RRC) reset message indicating a secondary cell group (SCG) change procedure while maintaining a connection with the master base station; And deactivating all SCells in the secondary base station if the PSCell is not changed by the SCG changing procedure.