In addition, the corresponding relationship between the multiple candidate resource sets and the multiple control channel resources may be represented by a way of, such as, a table, a formula, or a figure, etc. In the corresponding relationship, the multiple candidate resource sets and the multiple control channel resources may be one-to-one correspondence, or one candidate resource set may correspond to multiple control channel resources; or one control channel resource may correspond to multiple candidate resource sets. That is, the terminal device may determine the control channel resource corresponding to the target resource set by looking up a preset table that includes the corresponding relationship between the multiple candidate resource sets and the multiple control channel resources. The table includes information of the multiple candidate resource sets and information of the multiple control channel resources. Or, the terminal device may calculate information, such as a position and size of the control channel resource corresponding to the target resource set through a preset formula representing a position relationship, and relative parameter information of the target resource set. The present application is not limited thereto.

Optionally, in an implementation of the first aspect, a beam for transmitting the second control information on the target control channel resource is the same as a beam for sending the first control information on the target resource set.