User Data Migration Offline Trigger via MME and AMF

The patent introduces a new user data management device as an intermediary to drive users offline during data migration. Instead of relying on the old device to push users offline, the new device proactively sends release requests to network elements (MME/AMF) to drive users offline. This intermediary approach resolves the contradiction by enabling reliable offline driving through the new device while maintaining efficient data migration processes.

The patent applies existing multi-functional protocols (UDR, UDA, RIR, RIA, CLR messages) to achieve user offline driving during data migration. These protocols serve multiple purposes including user data management, location tracking, and offline driving. By leveraging the universal nature of these existing protocols, the patent achieves high adaptability and flexibility without requiring new message formulations, thus avoiding increased device complexity.

The patent implements self-service mechanisms where the new user data management device autonomously drives users offline by sending release requests to network elements. The system automatically determines which users need to be driven offline based on migration requirements, selects appropriate protocols, and executes the offline driving process without manual intervention. This self-service approach improves reliability by reducing dependence on the old device while maintaining operational simplicity through automation.