Uplink Repetitions With Beam-Specific CSI Multiplexing

The patent segments the uplink transmission into multiple repetitions, each with distinct digital precoders and beams. The CSI reporting is also segmented, with different CSI values determined and multiplexed with different repetitions. This segmentation allows the system to achieve diversity gain through multiple transmission paths while managing complexity by handling each repetition independently.

The patent introduces dynamic switching between different transmission schemes based on channel conditions and processing delays. The UE dynamically determines whether to use latest CSI or previous CSI for each repetition based on whether the minimum processing delay is satisfied. This dynamic adaptation optimizes transmission reliability without requiring the system to handle all possible configurations statically.

The patent implements dynamic CSI selection based on processing delay constraints. When the minimum processing delay can be satisfied, the UE uses the latest channel and interference measurements to determine CSI, ensuring high measurement precision. When the processing delay constraint cannot be met, the UE falls back to using previous measurements. This dynamic approach ensures that CSI accuracy is optimized without violating timing constraints.

The patent prepares CSI determination in advance by evaluating whether the minimum processing delay can be satisfied before each repetition transmission. The UE determines the appropriate CSI (latest or previous) based on the timing relationship between the CSI reference resource and the uplink transmission. This preliminary evaluation ensures that the correct CSI is selected without causing timing violations.