Conditional Handover Preparation for Reliable 5G Cell Transitions

The patent applies preliminary action by preparing multiple candidate target cells and their corresponding handover commands in advance, before the actual handover is needed. The UE stores these pre-prepared commands and can execute them immediately when conditions are met, without waiting for real-time measurement reports and handover decisions during degraded link conditions. This resolves the contradiction by decoupling the handover preparation phase from the execution phase, allowing fast execution while maintaining reliability through advance preparation.

The patent applies segmentation by dividing the handover process into distinct phases: preparation of multiple candidate target cells, storage of handover commands, condition monitoring, and execution. The UE is configured with multiple candidate cells but only needs to monitor and execute when conditions are met, rather than managing complex real-time decisions. This segmentation reduces UE complexity by providing clear, pre-defined procedures while maintaining high reliability through multiple prepared options.

The patent applies preliminary action by pre-configuring handover commands and candidate target cells during periods when radio conditions are good. The UE stores these commands and only needs to monitor simple conditions (such as reference signal received power thresholds) rather than performing complex real-time handover decisions. This reduces the time loss during execution because the heavy processing was done in advance, and only simple condition checking remains during potential handover scenarios.