NTN Uplink Timing Indication Using Relative and Absolute Slot Offsets

The patent introduces dynamic slot offset indication mechanisms where the network device can flexibly indicate different slot offset values (K1, K2, K3) based on actual propagation conditions. The terminal adapts its uplink timing dynamically according to the indicated offset values, enabling the system to handle varying round-trip delays in NTN scenarios while maintaining synchronization reliability.

The patent changes the timing parameter representation by introducing multiple slot offset parameters (K1 for PUSCH, K2 for PUCCH, K3 for SRS) and their relative/absolute offset variants. This parameter expansion allows the system to accurately represent and control timing relationships despite large propagation delays, transforming the fixed slot offset limitation into a flexible multi-parameter timing control system.

The patent segments the timing offset control into distinct components: base slot offset values (K1, K2, K3) for different uplink channels, relative offset indicators for adjustments, and absolute offset indicators for reconfiguration. This segmentation allows each component to be independently controlled and indicated, providing timing flexibility while managing complexity through modular parameter indication rather than a single complex parameter.

The patent implements partial indication mechanisms where not all timing parameters need to be explicitly signaled in every case. Relative offset indications can be used when only incremental adjustments are needed, reducing signaling overhead compared to indicating complete absolute offsets every time. This partial action approach provides flexibility only when necessary, balancing adaptability with complexity management.