Conditional Handover Relaxation for Radio Link Problems

The patent applies preliminary action by pre-configuring handover conditions and candidate target cells before the actual handover is needed. The network configures measurement parameters, reporting criteria, and candidate cell lists in advance, so that when handover becomes necessary, the wireless device can immediately execute the pre-prepared handover command without waiting for measurement reporting and handover preparation, thus reducing handover failure due to timing delays.

The patent applies feedback by continuously monitoring serving cell quality metrics (such as RSRP, RSRQ, SINR) and comparing them against predefined thresholds. When the serving cell quality deteriorates below the threshold, the system triggers the conditional handover procedure. This feedback mechanism ensures that handover is initiated at the optimal moment based on real-time channel conditions, balancing the need for fast handover execution with maintaining serving cell link stability.

The patent applies dynamics by implementing dynamic handover triggering criteria that adapt to changing channel conditions. Instead of using a fixed threshold, the system uses hysteresis margins and time-to-trigger parameters that adjust based on the rate of signal degradation and the duration of poor channel conditions. This dynamic approach ensures that handover is triggered timely when genuine degradation occurs, while filtering out temporary signal fluctuations that would cause unnecessary handovers.