Per Path Doppler Reporting via Tracking Reference Signal

The patent segments the channel measurement process by separating different path components into distinct measurement units. Each path is measured independently using TRS, and the Doppler frequency measurements are organized by path index, allowing the UE to report only the necessary path-specific parameters rather than all possible combinations, thus reducing reporting complexity while maintaining prediction accuracy.

The TRS acts as an intermediary signal that enables the UE to measure Doppler frequency without requiring direct downlink channel measurements. The TRS serves as a mediator that carries channel state information, allowing the UE to infer downlink channel characteristics through TRS measurements, thereby simplifying the measurement process while improving prediction accuracy.

The patent applies local quality by measuring and reporting Doppler frequency only for specific paths that are relevant to the UE's current channel conditions. Instead of reporting all possible path measurements, the UE identifies and reports only the dominant paths or paths above a certain threshold, reducing the quantity of reported data while maintaining reliability for high mobility scenarios.

The patent employs partial action by selecting only the necessary number of path measurements to achieve reliable communication. The UE determines the minimum set of path measurements required based on channel conditions and reports only those, avoiding excessive measurements that would increase overhead without providing additional reliability benefit.