CSI Report Configuration for Joint Beam Refinement
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently configuring channel state information (CSI) reports due to the lack of effective methods for managing multiple reference signal resources across different base station beams, leading to suboptimal beam refinement and interference measurements.
Innovation Solution
The proposed solution involves configuring CSI report configurations with multiple reference signal resource sets, each associated with a different base station beam, to facilitate joint procedures for both base station and user equipment (UE) beam refinement, enabling more accurate channel and interference measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate procedures are used for base station beam refinement and UE beam refinement, then each procedure can be independently optimized, but the overall process time increases and network resources are consumed more
Solution Approach 1:
The patent combines base station beam refinement and UE beam refinement into a single joint procedure. The gNB configures CSI report settings that enable the UE to perform both base station beam measurement (using CSI-RS resources) and UE beam measurement (using SSB or CSI-RS resources) simultaneously, reporting results in a unified CSI report. This merging eliminates the sequential execution overhead and reduces network latency while maintaining measurement precision.
Solution Approach 2:
The joint procedure enables continuous beam refinement operations where the UE continuously monitors and reports beam quality metrics for both base station beams and UE beams. The gNB can dynamically adjust beam configurations based on continuous feedback, maintaining optimal beam pairs without interruption or idle periods between separate refinement procedures.
2Adaptability or versatility
If separate procedures are used for base station beam refinement and UE beam refinement, then each procedure can be independently configured, but network resource consumption increases
Solution Approach 1:
The CSI report configuration structure is designed to be multi-functional, supporting both base station beam measurement and UE beam measurement within the same reporting framework. The gNB configures CSI report settings that include parameters for both CSI-RS based base station beam measurement and SSB/CSI-RS based UE beam measurement, allowing a single configuration to serve multiple refinement purposes simultaneously, thereby reducing overall network resource consumption.
3Productivity
If multiple reference signal resource sets are configured for joint beam refinement, then beam optimization efficiency improves, but configuration complexity increases
Solution Approach 1:
The patent segments the beam refinement process into distinct measurement components (base station beam measurement using CSI-RS, UE beam measurement using SSB or CSI-RS) while maintaining a unified reporting structure. Each reference signal resource set is configured with specific parameters appropriate for its measurement type, allowing independent optimization of each measurement component while benefiting from the efficiency of joint processing and unified reporting.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station may transmit a channel state information (CSI) report configuration associated with multiple reference signal resource sets, all reference signal resources in each reference signal resource set associated with a different base station beam, for one or more of channel measurements or interference measurements. The base station may receive a report, based at least in part on the CSI report configuration, that indicates one or more base station beams recommended for subsequent communications with a user equipment (UE). Numerous other aspects are provided.