Common NTN Timing Offset Signaling for Uplink Slot Alignment

The patent introduces common timing offset parameters (k_offset, N_offset) that modify the timing relationship between uplink and downlink slots. By changing the timing parameters through signaling (e.g., RRC signaling, DCI), the system achieves accurate synchronization without requiring complex hardware modifications. The network can dynamically adjust these parameters based on satellite position and movement, resolving the contradiction between precision and complexity.

The network performs preliminary calculation of timing offset parameters based on satellite ephemeris data and orbital parameters before transmission. By pre-computing the timing adjustments needed and signaling them to UEs in advance (through system information or dedicated signaling), the system avoids real-time calculation overhead during uplink transmission, thus maintaining high synchronization reliability while minimizing processing time loss.

The patent introduces an intermediary reference point (such as a gateway or ground station) that acts as a mediator between the satellite and UEs. The intermediary performs the complex computational tasks of calculating timing offsets based on satellite position and orbital mechanics, then provides simplified timing parameter signals to UEs. This distributes the computational burden, improving communication efficiency without requiring high computational power at the UE level.