Beam Group CSI Reporting for Spatial Diversity and Interference Reduction
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing beam groups for channel state information reporting, leading to interference and reduced spectral efficiency due to limited spatial diversity in preferred beams.
Innovation Solution
The method involves a user equipment (UE) receiving channel state information measurement resource configurations for multiple beam groups and transmitting a CSI report indicating a set of beams associated with each group, allowing the base station to select beams with improved spatial diversity and reduced interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam groups are used for CSI reporting, then spatial diversity is improved, but interference among beams increases
Solution Approach 1:
The patent segments the beam set into multiple beam groups, where each beam group contains beams from different TRPs. This segmentation allows the UE to report CSI for multiple beam groups simultaneously, achieving spatial diversity while the base station can select beams from different groups that have reduced mutual interference, thus resolving the contradiction between improving spatial diversity and reducing beam interference.
2Productivity
If multiple beams are reported in CSI, then spectral efficiency is improved, but power consumption increases
Solution Approach 1:
The patent implements partial action by configuring the UE to report CSI for a limited number of beam groups (e.g., up to 2 beam groups) rather than all available beams. This partial reporting approach maintains improved spectral efficiency through multi-beam reporting while significantly reducing the power consumption and processing burden compared to exhaustive beam reporting.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive channel state information (CSI) measurement resource (CMR) configurations for a first set of reference signals indicated to be associated with a first beam group and a second set of reference signals indicated to be associated with a second beam group. The UE may transmit a CSI report indicating a set of beams that includes a first beam associated with the first beam group and a second beam associated with the second beam group. Numerous other aspects are described.