WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION METHOD, MOBILE STATION DEVICE, BASE STATION DEVICE, PROGRAM, AND STORAGE MEDIUM

摘要

The wireless communication system is equipped with: a first base station device; a second base station device; and a mobile station device that communicates with the first base station device through a first component carrier, and with the second base station device through a second component carrier. The first base station device is provided with a prepare-to-disconnect request part for transmitting to the second base station device a request to prepare to disconnect from the second component carrier.