LP-SS Timing Advance Validation for CG-SDT Wake-Up Control

The radio system is segmented into two independent parts: a low-power wake-up radio (LP WUR) for receiving wake-up signals and performing timing advance validation, and a high-power main radio (MR) for actual data transmission. This segmentation allows the LP WUR to handle validation tasks without requiring the MR to be active, thereby reducing unnecessary power consumption while maintaining validation reliability.

The wake-up signal acts as an intermediary mechanism that triggers MR activation only when necessary. The LP WUR receives wake-up signals and performs timing advance validation independently, then controls MR activation based on validation results. This intermediary approach ensures MR is activated only when validation passes, eliminating wasteful power consumption.

The system segments validation functionality from transmission functionality by assigning timing advance validation to the low-power LP WUR and data transmission to the high-power MR. This allows validation to occur while the MR remains inactive, achieving power savings without compromising validation reliability.

The LP WUR acts as a disposable, low-power validation component that can operate independently without requiring the expensive MR to be active. This allows validation to be performed using minimal power resources, and the MR only activates when validation succeeds and transmission is needed.