Multi-TRP Uplink Pathloss Reference Signal Determination

The patent segments the single reference signal resource into multiple reference signal resources, where each reference signal resource is associated with a specific TRP. The UE determines separate reference signal resources for each TRP based on TCI states and QCL assumptions, allowing independent pathloss calculation for each TRP. This segmentation enables accurate power control for multi-TRP scenarios while maintaining manageable complexity through systematic association rules.

The patent establishes universal determination rules that can be applied across different multi-TRP scenarios. The UE uses TCI states and QCL assumptions as universal indicators to determine reference signal resources, regardless of the specific TRP configuration. These universal rules simplify the complexity by providing a standardized approach that works for various TRP setups without requiring TRP-specific complex determination logic for each case.

The patent introduces TCI states and QCL assumptions as intermediary elements that bridge the gap between system flexibility and transmission reliability. These intermediaries allow the UE to determine appropriate reference signal resources even when explicit pathloss reference signals are not provided. The TCI states and QCL assumptions serve as mediators that enable reliable pathloss calculation while maintaining the flexibility of the multi-TRP uplink scheme.