CSI Feedback for Multiple TRPs Using Segmented Indicators

The patent segments the channel state information feedback process by introducing separate indicator fields for different TRPs (first TRP indicator and second TRP indicator). This allows independent tracking and feedback of channel conditions for each TRP, enabling precise radio link adaptation without requiring complete system reconfiguration. The segmentation resolves the contradiction by making the complex multi-TRP system manageable through modular, independent control of each TRP's channel state.

The patent adds a new dimension to the feedback mechanism by introducing TRP-specific indicator fields (first TRP indicator and second TRP indicator) that operate alongside traditional CSI feedback. This dimensional expansion allows the system to track channel states across multiple TRPs simultaneously, improving radio link adaptation reliability without proportionally increasing overall system complexity, as each dimension can be managed independently.

The patent segments the CSI determination process by associating separate indicator fields with each scheduled TRP. When multiple transport blocks are scheduled across different TRPs, each TRP's channel state can be determined and tracked independently using its specific indicator, rather than requiring a monolithic CSI determination process. This segmentation enables efficient multi-TRP scheduling while managing determination complexity through modular, TRP-specific processing.

The patent introduces TRP-specific indicator fields as intermediary elements that facilitate CSI determination for multiple scheduled transport blocks. These indicators act as mediators between the physical channel measurements and the higher-layer scheduling decisions, simplifying the overall determination process by providing structured, TRP-specific information that can be processed independently for each scheduled block.

The patent applies local quality by making the feedback structure adaptive to actual channel conditions. When multiple TRPs are active, the system includes separate indicator fields for each TRP, providing precise local information where needed. When fewer TRPs are active, the feedback overhead is naturally reduced. This local quality approach ensures feedback precision is maintained for active TRPs while optimizing overall overhead based on actual system state.

The patent implements a dynamic feedback mechanism where the presence and structure of TRP-specific indicator fields depend on the actual number of active TRPs. The system dynamically adjusts feedback composition based on channel conditions and scheduling requirements, including only the necessary TRP indicators rather than always transmitting fixed-size feedback structures. This dynamic approach balances overhead reduction with precision maintenance.