Method of transmitting physical uplink control channel and related device

A user equipment (UE) for transmitting a Physical Uplink Control Channel (PUCCH), the UE comprising:

• at least one processor for executing one or more computer-executable instructions;
• and
• at least one memory, coupled to the at least one processor, for storing the one or more computer-executable instructions that, when executed by the at least one processor, cause the UE to:
• receive a first Radio Resource Control (RRC) configuration including a first PUCCH resource configuration and a second PUCCH resource configuration;
• receive a first Downlink Control Information (DCI) format that schedules a first Physical Downlink Shared Channel (PDSCH) and a second DCI format that schedules a second PDSCH;
• determine a first PUCCH for a first Hybrid Automatic Repeat Request (HARQ) acknowledgement (ACK) codebook corresponding to the first PDSCH according to the first PUCCH resource configuration;
• determine a second PUCCH for a second HARQ-ACK codebook corresponding to the second PDSCH according to the second PUCCH resource configuration;
• and
• in a case that the first PUCCH overlaps the second PUCCH in time domain and the first PUCCH is a high priority PUCCH and the second PUCCH is a low priority PUCCH, perform the following:
• transmit the first PUCCH;
• determine a PUCCH resource for the first PUCCH based on a total payload size of high priority Uplink Control Information (UCI) on the first PUCCH and a PUCCH resource indicator in a third DCI format that schedules the first PUCCH;
• after determining the PUCCH resource for the first PUCCH, determine a number of physical resource blocks (PRBs) of the first PUCCH based on a payload size of the first HARQ-ACK codebook, a payload size of the second HARQ-ACK codebook, a first maximum coding rate, and a second maximum coding rate;
• determine a first number of resource elements in the first PUCCH for multiplexing the first HARQ-ACK codebook according to a smaller of a total number of resource elements of the first PUCCH and a second number of resource elements, the total number of resource elements determined based on the number of PRBs of the first PUCCH, and the second number determined based on the payload size of the first HARQ-ACK codebook, a size of a Cyclic Redundancy Check (CRC) for the first HARQ-ACK codebook, and the first maximum coding rate corresponding to the first PUCCH resource configuration;
• and
• determine a third number of resource elements in the first PUCCH for multiplexing the second HARQ-ACK codebook according to a difference between the total number of resource elements of multiplexing the first PUCCH and the first number of resource elements for the first HARQ-ACK codebook,
• wherein the first HARQ-ACK codebook and the second HARQ-ACK codebook are multiplexed in the first PUCCH in a case that the difference between the total number of resource elements of the first PUCCH and the first number of resource elements is not zero.