USER TERMINAL, RADIO BASE STATION AND RADIO COMMUNICATION METHOD

摘要

The present invention is designed to improve throughput when CA is executed between multiple cells including a TDD cell. A user terminal carries out radio communication with a plurality of cells by employing carrier aggregation, and has a receiving section that, when a connection is established with a TDD cell, receives information about a predetermined DL/UL configuration that is selected from a plurality of DL/UL configurations, and a control section that controls transmission and reception to and from the TDD cell based on the predetermined DL/UL configuration received, and a DL/UL configuration to carry out DL communication in all subframes is included as one in the plurality of DL/UL configurations, and the control section uses the DL/UL configuration to carry out DL communication in all subframes as one of the DL/UL configurations only when the connecting TDD cell is a secondary cell.

主权项

1. A user terminal that carries out radio communication with a plurality of cells by employing carrier aggregation, the user terminal comprising:
a receiving section that, when a connection is established with a TDD cell, receives information about a predetermined DL/UL configuration that is selected from a plurality of DL/UL configurations; and a control section that controls transmission and reception to and from the TDD cell based on the predetermined DL/UL configuration, wherein a DL/UL configuration to carry out DL communication in all subframes is included as one in the plurality of DL/UL configurations, and the control section uses the DL/UL configuration to carry out DL communication in all subframes as one of the DL/UL configurations only when the connecting TDD cell is a secondary cell.