Optionally, in the embodiment shown in FIG. 6A, FIG. 6B, and FIG. 6C, there is no necessary binding relationship between a solution for verifying validity of an access location of an NG-RG and a solution for isolating different sessions in a non-3GPP network. Specifically, the different sessions in the non-3GPP network may be isolated by using the method for isolating the different sessions in the non-3GPP network according to the embodiment of this application, and the validity of the access location information of the NG-RG may be verified by using another method. Alternatively, the validity of the access location information of the NG-RG may be verified by using the method for verifying the validity of the access location information of the NG-RG according to the embodiment of this application, and the different sessions in the non-3GPP network are isolated by using another method. This is not specifically limited in the embodiment of this application.
