DAPS Handover Failure Reporting with Timestamped Events

The patent segments the failure detection process into distinct phases: radio link failure detection in the source cell and handover failure detection in the target cell. By dividing the handover process into separate stages with specific monitoring points, the system can detect and report failures more effectively without compromising data transmission continuity during the handover itself.

The patent implements preliminary monitoring of radio link quality in the source cell before handover completion, and preliminary setup of failure reporting mechanisms in the target cell. This allows the system to identify and report failures proactively, enabling network optimization while maintaining seamless data transmission during DAPS handover operations.

The patent makes the failure reporting mechanism universal by enabling it to function in multiple scenarios: reporting radio link failures in the source cell, reporting handover failures in the target cell, and reporting both types of failures. This multi-functional approach improves handover performance reliability while avoiding the need for separate complex reporting systems for different failure types.

The patent implements feedback mechanisms where the terminal reports detected failures to the base station, which then uses this information to optimize handover parameters and configurations. This feedback loop enables continuous improvement of handover performance without requiring overly complex local processing at the terminal, as the base station centralizes the optimization decisions.