According to a twelfth aspect, an embodiment of this application provides a communications apparatus, configured to implement the method in any one of the tenth aspect or the possible designs of the tenth aspect. The communications apparatus includes corresponding functional modules respectively configured to implement the steps in the foregoing method, for example, a processing unit and a transceiver unit.

An embodiment of this application provides a computer-readable storage medium. The computer storage medium stores a computer-readable instruction. When a computer reads and executes the computer-readable instruction, a communications apparatus is enabled to perform the method in any one of the foregoing possible designs.

An embodiment of this application provides a computer program product. When a computer reads and executes the computer program product, a communications apparatus is enabled to perform the method in any one of the foregoing possible designs.

An embodiment of this application provides a chip. The chip is connected to a memory, and is configured to read and execute a software program stored in the memory, to implement the method in any one of the foregoing possible designs.

An embodiment of this application provides a communications apparatus. The communications apparatus includes a processor, and the processor is configured to be coupled to a memory and read and execute an instruction in the memory, to implement the method according to any one of the foregoing aspects or the possible designs of the foregoing aspects.

An embodiment of this application provides a communications system, including the communications apparatus in the second aspect and the communications apparatus in the fifth aspect.