For example, the first DCI may indicate some combinations of information fields included in the second DCI corresponding to the terminal device. Specifically, second DCI of a terminal device includes a plurality of information fields, and an information block corresponding to the terminal device in the first DCI may indicate one of several status value combinations of several information fields included in the second DCI configured by higher layer signaling or predefined in the standard. For example, second DCI of a terminal device A includes a BWP ID information field, a time domain scheduling indicator (cross-slot or same-slot) information field, a trigger RS resource indicator information field, and a carrier transmission indicator information field. An information block corresponding to the terminal device A in the first DCI may use two bits, and status values of the two bits may indicate status values of the foregoing four information fields. A table 1 shows a correspondence between some of the two bits and the foregoing four information fields.

In another aspect, an information field of an information block in first DCI may indicate a row of a table, and each row of the table includes a value parameter of an information field in second DCI of UE corresponding to the information block. That is, the information field of the information block in the first DCI may indicate values of a plurality of information fields in the second DCI. Details are shown in the table 1.