TERMINAL DEVICE AND BASE STATION DEVICE

摘要

A terminal device is provided which, in a communication system involving communication between a base station device and a terminal device, can perform communication efficiently. If a Discovery Reference Signal (DRS) is set to the carrier frequency for a prescribed band, this mobile station device switches the secondary cell activation timing of a secondary cell corresponding to the aforementioned carrier frequency from a first secondary cell activation timing to a second secondary cell activation timing.