User apparatus, base station, and communication method

In the user apparatus in a mobile communication system including a base station and a user apparatus, a predetermined signaling value that is a signaling value other than a default signaling value and a maximum transmission associated with the predetermined signaling value from the base station When the receiving unit that receives the power value and the user apparatus support the predetermined signaling value, the transmission power is controlled by applying the maximum transmission power value corresponding to the predetermined signaling value. A transmission power control unit that performs the predetermined signaling value for all bands used in the mobile communication system.