Random Access Preamble Backoff Parameter Calculation for Coverage Enhancement

The patent applies local quality by differentiating the Backoff Parameter application based on CE levels. Specifically, UEs determine whether to apply the Backoff Parameter based on their individual CE levels - UEs in normal coverage apply the Backoff Parameter while UEs in enhanced coverage modes may not apply it or apply it differently. This localized differentiation resolves the contradiction by improving random access efficiency for EC UEs without significantly increasing system-wide parameter management complexity.

The patent implements dynamics by making the Backoff Parameter application dynamic and adaptive to the UE's coverage condition. UEs dynamically determine whether to apply the Backoff Parameter based on their current CE level and coverage conditions. This dynamic approach allows EC UEs to avoid unnecessary delays while maintaining uniform parameter management for normal coverage UEs, thereby reducing transmission delay without compromising ease of operation.

The patent applies parameter changes by modifying the effective Backoff Parameter behavior based on UE coverage conditions. For EC UEs, the system changes the parameter application logic - EC UEs may not apply the Backoff Parameter or apply it with different timing, which reduces unnecessary retransmissions and improves resource utilization. This parameter change approach maintains transmission reliability for EC UEs while reducing system-wide resource consumption and congestion.