determining, by a terminal device, a target channel group, wherein grouping information of the target channel group is indicated by downlink control information (DCI), and the target channel group comprises at least one channel, and a first channel in the target channel group corresponds to a first HARQ codebook; and

determining, by the terminal device, a target HARQ codebook to be transmitted on a first uplink resource, wherein the first uplink resource is an HARQ feedback resource corresponding to the target channel group, wherein

when the first channel meets a first processing delay, the target HARQ codebook comprises the first HARQ codebook,

when the first channel does not meet the first processing delay, the target HARQ codebook does not comprise a valid first HARQ codebook; wherein the first processing delay is determined according to processing capability of the terminal device.