Patent ID: 11924139
Assignee: NTT DOCOMO, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 5:
6. A system comprising a terminal and a base station, wherein:
the terminal comprises:
a receiver that receives a first physical downlink shared channel (PDSCH) scheduled by downlink control information (DCI);
a processor that determines, when a semi-static hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook is configured, a codebook for a first physical uplink control channel (PUCCH) transmitted with repetitions per slot, based on at least one of a first PDSCH candidate occasion and information indicating a timing from reception of the first PDSCH to transmission of HARQ-ACK for the first PDSCH; and
a transmitter that transmits, on the first PUCCH, HARQ-ACK based on the codebook,
wherein when a period for repetitions of first PUCCH transmission collides with a period for transmission of an uplink control information (UCI) type which is different from the HARQ-ACK, the processor does not perform to transmit the UCI type and controls to transmit the first PUCCH; and

the base station comprises:
a transmitter that transmits the first PDSCH;
a processor that indicates, when the semi-static HARQ-ACK codebook is configured, to determine the codebook, based on at least one of the first PDSCH candidate occasion and the information indicating the timing; and
a receiver that receives the HARQ-ACK,
wherein when the period for repetitions of the first PUCCH transmission collides with the period for transmission of the UCI type, the processor does not receive the UCI type and controls to receive the first PUCCH.