NTN MTC Scheduling With Timing Advance and Blocked Downlink Windows

The patent applies dynamics by transitioning from frequent periodic TA reporting to event-triggered TA reporting. The TA is reported dynamically only when specific events occur (e.g., TA exceeds threshold, handover occurs, satellite position changes), rather than following a fixed frequent scheduling pattern. This adaptive approach maintains timing alignment reliability while significantly reducing signaling overhead and improving resource utilization efficiency.

The patent changes the parameter of TA reporting frequency from fixed high frequency to variable frequency based on network conditions. By monitoring TA values and triggering reports only when necessary (when TA exceeds threshold or specific events occur), the system optimizes the balance between maintaining adequate timing alignment and minimizing signaling overhead, thereby improving overall resource utilization.

The patent applies dynamics by transitioning from fixed uplink transmission time to variable uplink transmission time. The transmission time is dynamically adjusted based on actual network conditions, TA values, and propagation delays in NTN. This allows the system to maintain synchronization accuracy under varying latency conditions while managing scheduling complexity through event-triggered adjustments rather than continuous reconfiguration.

The patent applies preliminary action by pre-configuring uplink transmission time parameters and compensation gaps, then adjusting them based on measured TA values and network conditions. The system prepares timing adjustments in advance based on predicted propagation changes, ensuring synchronization accuracy is maintained without requiring complex real-time scheduling recalculations, thus balancing accuracy with scheduling simplicity.

The patent applies dynamics by making the uplink compensation gap variable rather than fixed. The compensation gap is dynamically adjusted based on actual TA values, propagation conditions, and network load. When synchronization is critical, the gap is enlarged to maintain timing accuracy; when conditions permit, the gap is reduced to maximize transmission time window. This adaptive approach resolves the contradiction by allowing the parameter to change based on actual operational needs.

The patent applies preliminary action by pre-establishing compensation gap parameters and then adjusting them based on measured timing advances and propagation conditions. The system calculates appropriate compensation gaps in advance based on predicted timing requirements, ensuring sufficient time for synchronization while maximizing the transmission window when conditions allow, thus balancing timing accuracy with transmission efficiency.