Core Network Node Control for Cross-Operator Service Coordination

The patent introduces a mobility management entity (MME) as an intermediary component that mediates between terminal apparatuses and multiple mobile communication networks operated by different operators. The MME performs mobility control, authentication, and service provisioning across operator boundaries, enabling coordinated operation while preserving individual network autonomy. This intermediary structure resolves the contradiction by providing a neutral coordination point that maintains both independence and cooperation.

The mobility management entity (MME) is designed as a universal control component that handles multiple functions including mobility control, authentication, billing, and service provisioning across different operator networks. By consolidating these diverse functions into a single multi-functional entity, the system achieves cross-network service access without proportionally increasing control complexity. The MME's universal design allows it to manage heterogeneous networks through standardized interfaces.

The system performs preliminary authentication and identification of terminal apparatuses using identification information (such as IMSI) before the terminals access services across operator networks. The MME retrieves subscriber information from home subscriber servers in advance, determines the appropriate serving operator, and pre-configures charging parameters. This preliminary action ensures that charge processing can be executed efficiently during service delivery without requiring intensive real-time information processing, thereby reducing the information processing load during actual service operations.