NR-U Cell Reconfiguration Under CCA Failures

The patent applies preliminary action by performing Clear Channel Assessment (CCA) checks before initiating cell reconfiguration procedures. The UE checks channel availability in advance using LBT mechanisms, and only proceeds with reconfiguration if the channel is clear. This prevents wasted transmission attempts and reduces overall delay by avoiding repeated failures after initiation.

The patent implements dynamics by making cell reconfiguration procedures adaptive to real-time channel conditions. The UE dynamically adjusts reconfiguration timing based on CCA outcomes - extending or canceling procedures when channel is busy, and proceeding when clear. This dynamic adaptation resolves the contradiction by aligning transmission actions with actual channel availability, reducing unnecessary delays while maintaining reliability.

The patent applies preliminary action by performing Clear Channel Assessment (CCA) checks before initiating cell reconfiguration procedures. The UE checks channel availability in advance using LBT mechanisms, and only proceeds with reconfiguration if the channel is clear. This prevents wasted transmission attempts and reduces overall delay by avoiding repeated failures after initiation.

The patent converts the potentially harmful effect of LBT-induced delays and power consumption into a benefit by using CCA failure detection to trigger adaptive procedure extension. When CCA failures are detected, the UE extends the reconfiguration procedure timing rather than attempting immediate transmission, thereby converting energy-wasting retransmission attempts into productive waiting periods that ultimately succeed when channel becomes available.