| 摘要 |
Provided are a communication apparatus and a method for receiving a response signal transmitted from a terminal configured with one or more downlink component carriers. The communication apparatus includes a transmitting section and a receiving section. The transmitting section is configured to transmit, to the terminal, downlink assignment information indicating one or more resources for downlink data, each of the one or more resources being assigned to one of the one or more downlink component carrier(s), and configured to transmit the downlink data to the terminal. The receiving section is configured to receive one or more response signals for the downlink data, which are transmitted from the terminal. The terminal makes the phase points of the response signals different in accordance with a number of downlink data which has been successively received. |
| 主权项 |
1. An integrated circuit comprising:
transmission circuitry which, in operation, controls transmission, to a terminal configured with one or more downlink component carrier(s), of downlink assignment information indicating one or more resources for downlink data, each of the one or more resources being assigned to one of the one or more downlink component carrier(s), and controls transmission of the downlink data to the terminal; and reception circuitry, which, in operation, controls reception of one or more response signals for the downlink data, which is transmitted from the terminal, wherein: each response signal denotes an outcome of decoding downlink data, or denotes a Discontinuous Transmission (DTX) representing that the outcome is not transmitted; when downlink component carriers including a first downlink component carrier and a second downlink component carrier are configured, response signals for a plurality of downlink data in the downlink component carriers are transmitted using at least one phase point and at least one resource index of at least one uplink control channel depending on an outcome of decoding each of the plurality of downlink data; and a first outcome that a first response signal for downlink data in the first downlink component carrier denotes with a first phase point, with which a second response signal for downlink data in the second downlink component carrier denotes the DTX, is the same as the first outcome, which a third response signal for downlink data in the first downlink component carrier denotes with the same first phase point when only the first downlink component carrier is configured, such that:
when the first downlink component carrier and the second component carrier are configured, an acknowledgment (ACK) for downlink data in the first downlink component carrier and a DTX for downlink data in the second downlink component carrier are denoted by the first response signal and the second response signal with the first phase point; andwhen only the first downlink component carrier is configured, an ACK for downlink data in the first downlink component carrier is denoted by the third response signal with the same first phase point. |
