In addition, in S310, the core network device #B may determine a moment #B, where the moment #B is a moment when the terminal device #B needs to transmit the data #β from the transmission layer of the terminal device #β. (for example, a communications protocol stack in the device #B) to the application layer (specifically, the foregoing application program #β) of the terminal device #B. Alternatively, the moment #B may be a moment when the terminal device #B performs the processing corresponding to the data #β.
By way of example but not limitation, in the embodiments of this application, the server of the application program #α may be communicatively connected (for example, in a wired communication connection or a wireless communication connection) to the core network device #B.
In this way, the server may send indication information of the moment #B to the core network device #B. That is, the core network device #B may determine the moment #B based on an indication from the server.
By way of example but not limitation, the moment #B may be entered to the server by a designer of the operation instruction, or the server may obtain the moment #B through calculation based on a preset algorithm. Description of a same or similar situation is omitted below.
It should be understood that, the listed manners of determining the moment #B by the core network device #B are merely examples for description, and this application is not limited thereto. For example, the administrator or the designer of the operation instruction may enter information of the moment #B to the core network device #B, so that the core network device #B can determine the moment #B based on the entered information.