HARQ-ACK feedback method, terminal and network side equipment

Abstract

The present invention provides a HARQ-ACK feedback method, a terminal and a network side device, and belongs to the technical field of communications, the method comprising: when HARQ-ACK of a PDSCH needs to be multiplexed and transmitted on a PUSCH scheduled by an uplink DCI, if the uplink DCI contains a DAI, determining an HARQ-ACK feedback codebook transmitted on the PUSCH on the basis of at least one of a judgment results that whether a PDSCH scheduled before the uplink DCI needs to multiplex and transmit HARQ-ACK on the PUSCH and the DAI, and the maximum number of PDSCHs which can be transmitted after the uplink DCI. The present invention is applicable to a scenario in which HARQACKs corresponding to PDSCHs scheduled by DL DCI transmitted after scheduling UL DCI transmitted by a PUSCHare multiplexed and transmitted on the PUSCH.

Description

Technical field[0001]The present invention relates to the field of communication technology, in particular to a HARQ-ACK (Hybrid Automatic Repeat request-Acknowledgement, hybrid automatic repeat request-response) feedback method, terminal and network side equipment.Background technique[0002]At present, in 5G NR (the 5th Generation mobile communication technology-New Radio, the fifth generation mobile communication technology-New Radio), UE (User Equipment, terminal, also called user equipment) does not expect to schedule PUSCH (Physical Uplink Shared Channel, physical uplink shared channel) UL (uplink, uplink, or simply referred to as uplink) DCI (Downlink Control Information, downlink control information) transmitted after the DL (downlink, downlink, can be referred to as downlink) DCI scheduling The HARQ-ACK corresponding to the PDSCH (Physical Downlink Shared Channel) is multiplexed and transmitted on the PUSCH, that is, if there is a PUSCH scheduled by DCI, the PDSCH scheduled a...

AI Technical Summary

Problems solved by technology

[0002] Currently, in 5G NR (the 5th Generation mobile communication technology-New Radio, the fifth generation mobile communication technology-new air interface), UE (User Equipment, terminal, also called user equipment) does not expect to schedule PUSCH (Physical Uplink Shared Channel, physical uplink shared channel) transmission of UL (uplink, uplink, or simply referred to as uplink) DCI (Downlink Control Information, downlink control information) transmitted after DL (downlink, downlink, can be referred to as downlink) DCI scheduling The HARQ-ACK corresponding to the PDSCH (Physical Downlink Shared Channel, Physical Downlink Shared Channel) is multiplexed and transmitted on the PUSCH, that is, if there is a PUSCH scheduled by DCI, the HARQ-ACK corresponding to the PDSCH transmission scheduled after the DCI The PUCCH resources used for ACK feedback cannot conflict with the PUSCH resources. The problem is that for URLLC (Ultra-Reliable and Low Latency Communications, Ultra-Reliable and Low Latency Communications) UEs, the transmission delay of HARQ-A

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