Secondary Network Mobility Reporting for Event-Driven Failure Detection

The patent changes the parameter of report transmission from continuous to conditional based on event triggers. The terminal device only records and transmits mobility reports when specific events occur (e.g., SN change, SN addition failure, random access failure, quality threshold violations), rather than in all scenarios. This parameter change resolves the contradiction by maintaining reliability through event-driven reporting while reducing energy consumption by avoiding unnecessary report transmissions in stable conditions.

The terminal device autonomously determines whether to record and transmit mobility reports based on locally monitored events and configured thresholds. The device self-evaluates its mobility state and independently decides when reporting is necessary, eliminating the need for continuous network-directed reporting commands. This self-service approach reduces signaling overhead and energy consumption while maintaining the ability to report critical mobility events.

The patent changes the signaling pattern from continuous reporting to event-triggered reporting. By modifying the parameter of when reports are transmitted (only upon specific mobility events rather than continuously), the solution reduces signaling overhead while maintaining the critical information needed for network devices to identify and address SN mobility failures.

The patent extracts only the essential mobility information that indicates potential failures or successful mobility events. Instead of transmitting complete mobility state information continuously, the system extracts and reports only specific event types (SN change, addition failure, random access failure, quality threshold violations), reducing signaling overhead while preserving the key information needed for robustness.

The patent changes the monitoring parameter from continuous to event-triggered. The terminal device monitors mobility parameters continuously but only records and reports when specific events occur or thresholds are violated. This parameter change maintains measurement precision for detecting mobility events while reducing energy consumption by processing and reporting only when necessary.

The patent applies partial action by monitoring all mobility parameters continuously but reporting only the essential subset that indicates critical events. The device performs full monitoring (excessive action for detection accuracy) but transmits only partial information (essential events only), balancing measurement precision with energy efficiency.