User equipment and communication method

A terminal comprising:

• a transmission unit that transmits, to a base station, information including a band combination for carrier aggregation and a maximum number of Multiple-input and multiple-output (MIMO) layers applicable to at least one component carrier included in the band combination;
• and
• a control unit that applies a specific value as the maximum number of MIMO layers to be applied to a specific component carrier included in the band combination, when a parameter indicating the maximum number of MIMO layers to be applied to the specific component carrier is not received from the base station.

A communication method by a terminal, the method comprising:

• transmitting, to a base station, information including a band combination for carrier aggregation and a maximum number of Multiple-input and multiple-output (MIMO) layers applicable to at least one component carrier included in the band combination;
• and
• applying a specific value as the maximum number of MIMO layers to be applied to a specific component carrier included in the band combination, when a parameter indicating the maximum number of MIMO layers to be applied to the specific component carrier is not received from the base station.