CSI-RS Beam Management With Multi-Set CQI Reporting
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing beamforming and channel quality assessment due to limitations in channel state information reference signal (CSI-RS) utilization and channel quality indicator (CQI) reporting, particularly in advanced radio access technologies like 5G and New Radio (NR).
Innovation Solution
Implementing multiple sets of CSI-RSs and CQI reporting to enhance beam management procedures, where each set is associated with a same network node transmit beam, allowing for improved reception and transmission of CSI-RSs and CQI reports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple sets of CSI-RSs are used for beam management, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent segments the beam management process into multiple distinct procedures (P1, P2, P3), each with specific CSI-RS configurations and purposes. P1 performs initial beam selection using SSB and CSI-RS, P2 refines beam selection with dedicated CSI-RS resources, and P3 performs final beam refinement. This segmentation allows each procedure to focus on specific measurement tasks, improving overall measurement precision while organizing complexity into manageable, standardized segments that can be independently configured and executed.
2Loss of information
If multiple CQI reports are transmitted, then information completeness is improved, but loss of time increases
Solution Approach 1:
The patent implements periodic CQI reporting mechanisms where the UE transmits CQI reports at predetermined intervals and triggered events. The network configures reporting periodicity and triggers (periodic, aperiodic, or event-based) to balance information completeness with time efficiency. This periodic action ensures that channel quality information is updated regularly without requiring continuous reporting, thus maintaining information completeness while minimizing time overhead.
3Reliability
If beam management procedures are enhanced with multiple CSI-RS sets, then reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The patent creates universal CSI-RS resource configurations that can serve multiple beam management functions across different procedures (P1, P2, P3). The same CSI-RS resource set structure, reporting formats, and measurement mechanisms are reused across all procedures, allowing a single configuration framework to handle initial beam selection, refinement, and tracking. This multi-functionality improves reliability through consistent behavior across procedures while reducing operational complexity by eliminating the need for separate configuration mechanisms for each beam management stage.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, during a beam management procedure, multiple sets of channel state information reference signals (CSI-RSs). The UE may receive multiple CSI-RSs, wherein one CSI-RS of the multiple CSI-RSs is associated with one set of CSI-RSs of the multiple sets of CSI-RSs, and wherein a beam associated with the one CSI-RS corresponds to a beam associated with the one set of CSI-RSs. The UE may transmit multiple channel quality indicator (CQI) reports based at least in part on the multiple CSI-RSs, wherein one CQI report of the multiple CQI reports is based at least in part on the one CSI-RS of the multiple CSI-RSs. Numerous other aspects are described.