| 摘要 |
This user device is provided with a timing adjustment unit that carries out timing control whereby the transmission timing of an uplink signal is shifted forward using the reception timing of a downlink signal as a reference, wherein the timing adjustment unit determines, in a cell group comprising secondary cells using the same uplink transmission timing from among cells used in carrier aggregation, whether or not a secondary cell that uses a carrier having a specified frame structure satisfies prescribed conditions, and in the event that said prescribed conditions are satisfied, uses a prescribed offset value for the timing control of said cell group. |
