| 摘要 |
Provided are techniques related to a terminal apparatus, a base station apparatus, a communication system, a communication method and an integrated circuit that realize efficient procedure of transmitting uplink control information in a plurality of cells. The terminal apparatus groups a plurality of cells into a single primary cell group and one or more secondary cell groups, and, in the case of performing a radio resource request, carries out either a radio resource request with respect to a cell of the primary cell group or a radio resource request with respect to a cell of the secondary cell groups. |
