| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique for performing CC control efficiently, when performing Ca for bundling a large number of CCs.SOLUTION: A user device performing communication with a base station in a mobile communication system supporting carrier aggregation includes a setting section for setting a cell group and a cell in the carrier aggregation, based on a message received from the base station, and a control section receiving a control signal for activating or non-activating any one cell belonging to a specific cell group from the base station, and activating or non-activating any one cell belonging to the specific cell.SELECTED DRAWING: Figure 11 |
