HARQ-ACK transmission method, user equipment, and network side device

A Hybrid Automatic Repeat reQuest (HARD)-Acknowledge (ACK) transmission method, performed by a network device, comprising:

• determining a target Physical Uplink Shared Channel (PUSCH) for carrying the HARQ-ACK, when a Physical Uplink Control Channel (PUCCH) carrying the HARQ-ACK overlaps with at least one PUSCH in time domain;
• obtaining an indication field of a Downlink Allocation Index (DAI) in a Downlink Control Information (DCI) scheduling a second type of PUSCH, when the target PUSCH is a first type of PUSCH;
• determining, according to the obtained indication field of the DAI, the number of bits of the HARQ-ACK transmitted in the target PUSCH, and receiving the HARQ-ACK in the target PUSCH according to the determined number of bits of the HARQ-ACK,
• wherein the first type of PUSCH is a PUSCH with a DCI scheduling or a PUSCH scheduled by a DCI without DAI, the second type of PUSCH is a PUSCH scheduled by a DCI with a DAI, the first type of PUSCH and the second type of PUSCH are overlapped with the same PUCCH in time domain.

A user equipment, comprising a transceiver, a storage, a processor and a computer program stored on the storage and executable on the processor, wherein, when the processor executes the computer program, the processor implements following steps:

• determining a target Physical Uplink Shared Channel (PUSCH) for carrying a Hybrid Automatic Repeat reQuest (HARD)-Acknowledge (ACK), when a Physical Uplink Control Channel (PUCCH) carrying the HARQ-ACK overlaps with at least one PUSCH in time domain;
• obtaining an indication field of a Downlink Allocation Index (DAI) in a Downlink Control Information (DCI) scheduling a second type of PUSCH, when the target PUSCH is a first type of PUSCH;
• determining, according to the obtained indication field of the DAI, the number of bits of the HARQ-ACK transmitted in the target PUSCH, and transmitting the HARQ-ACK in the target PUSCH according to the determined number of bits of the HARQ-ACK,
• wherein the first type of PUSCH is a PUSCH with a DCI scheduling or a PUSCH scheduled by a DCI without DAI, the second type of PUSCH is a PUSCH scheduled by a DCI with a DAI, the first type of PUSCH and the second type of PUSCH are overlapped with the same PUCCH in time domain.