METHOD FOR ESTABLISHING/RELEASING A MAC (MEDIDUM ACCESS CONTROL) ENTITY IN A WIRELESS COMMUNICATION SYSTEM AND A DEVICE THEREFOR

摘要

The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for performing establishing/releasing a MAC entity in the wireless communication system, the method comprising: communicating with a first base station (BS) on a first type cell, wherein the UE has a first MAC entity for the first type cell; establishing a second MAC entity for a second type cell, when the UE starts to communicate with a second BS while maintaining communication with the first BS; and releasing the second MAC entity for the second type cell, when the UE stops to communicate with a second BS while maintaining communication with the first BS.