Location Recording for Successful PSCell Addition or Change Reports

The patent applies preliminary action by recording location information of the terminal before and during PSCell addition or change operations. The network device obtains location information (such as GPS coordinates, cell ID, or tracking area) in advance and stores it for later verification. This preliminary recording creates a confirmation basis that can be used to verify whether the PSCell addition or change was successful, thereby improving reliability without significantly increasing system complexity.

The patent applies self-service by utilizing location information that the terminal device already possesses and maintains for other purposes (such as positioning services, billing, or mobility management). The network device retrieves this pre-existing location information without requiring separate acquisition operations. Since the terminal already stores location data for its normal operations, reusing this information for PSCell addition/change confirmation adds minimal time overhead while improving reliability through additional verification.