Herein, dynamic scheduling signaling configured transmission implicitly indicates whether its corresponding symbol is a UL symbol or a DL symbol. The UL symbol represents that the transmission direction in the symbol is a UL transmission direction, and the DL symbol represents that the transmission direction in the symbol is a DL transmission direction.

3) The second configuration signaling is UE-specific RRC signaling.

Herein, UE-specific RRC signaling configured transmission implicitly indicates whether its corresponding symbol is a UL symbol or a DL symbol. The UL symbol represents that the transmission direction in the symbol is a UL transmission direction, and the DL symbol represents that the transmission direction in the symbol is a DL transmission direction.

Step 103: The terminal determines a direction of the target resource as the first transmission direction, and performs data transmission with a network device based on the first transmission direction.

The technical solutions of this embodiment of this application are respectively described below with reference to different implementations of the second configuration signaling.

1) It is determined, based on the cell-specific RRC signaling, that the target resource corresponds to a UL transmission direction, and it is determined, based on the semi-static UL/DL configuration signaling, that the target resource corresponds to a DL transmission direction and/or a flexible transmission direction. In this case, the terminal determines the direction of the target resource as a UL transmission direction, and sends UL data on the target resource.