USER TERMINAL, BASE STATION AND RADIO COMMUNICATION METHOD

摘要

PROBLEM TO BE SOLVED: To appropriately perform transmission in an uplink even when performing CA by applying a different Duplex-mode between a plurality of cells.SOLUTION: A user terminal is configured to communicate by utilizing an FDD cell, a TDD cell and carrier aggregation. The user terminal includes: a reception part which receives a DL signal transmitted from each cell; and a feedback control part which refers to a table in which at least a state of an acknowledgement signal, a PUCCH resource and a QPSK symbol point are made correspondent, allocates the acknowledgement signal for each DL signal to an uplink control channel of a predetermined cell and feeds it back. The table is specified with different contents for each of the FDD cell and the TDD cell. The feedback control part uses the table corresponding to a duplex operation system of a predetermined cell to transmit the acknowledgement signal regardless of a cell detecting downlink control information and a cell receiving downlink shared data.