User terminal and radio communication method
摘要
說明書
According to the second embodiment described above, when the UE transmits a PUCCH and an sPUCCH at the same time, the UE can transmit UCI including an SR by using an appropriate channel. In particular, in the case of (1), the accuracy of HARQ-ACK detection can be improved, and, regarding SRs, it is possible to shorten the latency and achieve reduced UL latency. In particular, in the case of (2), it is possible to re-use existing terminal operations with respect to SRs, and, regarding HARQ-ACKs, it is possible to shorten the latency and achieve reduced UL latency. In particular, in the case of (3), it is possible to allocate a large-capacity PUCCH to a P-CSI having a relatively large payload, and, regarding SRs, it is possible to shorten the latency and achieve reduced UL latency. In particular, in the case of (4), regarding CSI, which has a significant impact on DL throughput, it is possible to achieve accelerated feedback by way of latency reduction, and, regarding SRs, it is possible to re-use existing terminal operations.
With a third embodiment of the present invention, which channel is used to transmit UCI when a UE does not support simultaneous transmission of a PUCCH and an sPUCCH or higher layer signaling (for example, RRC signaling) to disable this simultaneous transmission is reported, will be explained.
When the UE cannot transmit a PUCCH and an sPUCCH simultaneously, one or a plurality of HARQ-ACKs in response to the PDSCH (HARQ-ACKs that are originally scheduled to be transmitted in the PUCCH) and an SR that is originally scheduled to be transmitted in the sPUCCH may be (a1) transmitted in the sPUCCH, (a2) transmitted in the PUCCH or (a3) transmitted in either the sPUCCH or the PUCCH, based on predetermined conditions.
