Group-Based Beam Reporting With L1-SINR for Multi-TRP Downlink

The L1-SINR calculation is segmented into two distinct parts: (1) interference from other reported CSI-RS resources/SS/PBCH blocks, and (2) other interference signals. This segmentation allows the UE to separately measure and report interference components, enabling the gNB to make informed decisions about beam pairing while maintaining manageable calculation complexity.

The UE performs preliminary interference measurements on CSI-IM resources before reporting beam measurements. By pre-measuring interference on dedicated CSI-IM resources and storing these values, the UE avoids performing complex real-time interference calculations during beam reporting, thus reducing computational burden while improving transmission reliability.

The resource configuration structure is designed to be universal and flexible. The gNB can configure one or more resource settings for channel measurement, and each resource setting can contain multiple CSI-RS resources or SS/PBCH blocks. This universal configuration framework supports both single-TRP and multi-TRP scenarios without requiring separate configuration mechanisms, thereby achieving multi-TRP adaptability while controlling configuration complexity.

The patent introduces a new dimension in resource configuration by allowing the UE to report multiple CRIs/SSBRIs from different resource settings. This dimensional expansion enables the UE to select beams from multiple TRPs simultaneously by reporting one CRI from the first resource setting and another CRI from the second resource setting, thus achieving multi-TRP capability through configuration dimensionality expansion.