Beam Reporting for Multi-Panel Simultaneous Transmission
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Solution Overview
Problem
The existing panel-specific beam reporting method in wireless communication systems does not consider simultaneous transmission across multiple UE panels (STxMP), making it impossible to determine whether a UE supports STxMP based on reported information such as CRIs and SSBRIs.
Innovation Solution
A group-based beam reporting method is introduced, where UE resources are indicated for simultaneous transmission, allowing the reporting of CSI including resource indicators related to spatial filters, enabling determination of STxMP support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the existing panel-specific beam reporting method is used, then the beam reporting can be performed with current UE capabilities, but the simultaneous transmission across multiple panels (STxMP) cannot be supported or determined
Solution Approach 1:
The beam reporting is segmented into group-based reporting where CRIs are divided into multiple groups. Each group can be independently reported with its own RSRP values, allowing the UE to indicate multiple beam pairs that support simultaneous transmission across different panels. This segmentation enables STxMP support while maintaining compatibility with existing reporting structures.
Solution Approach 2:
The invention adds a new dimension to beam reporting by introducing group-based CRI reporting with multiple RSRP values per group. This dimensional expansion allows the UE to convey not only beam quality but also the capability for simultaneous transmission across multiple panels, thereby enabling STxMP support without losing beam information.
2Loss of information
If group-based beam reporting is implemented to support STxMP, then beam information for simultaneous transmission can be reported, but the reporting complexity increases
Solution Approach 1:
The group-based beam reporting mechanism serves multiple functions: it reports beam quality (RSRP), indicates STxMP capability, and provides resource indicator information. By making the reporting structure multi-functional, the invention reduces the need for separate reporting mechanisms, thereby managing complexity while achieving comprehensive beam information reporting for STxMP.
3Measurement precision
If multiple CRIs are reported with their respective RSRP values, then the beam quality for simultaneous transmission can be evaluated, but the signaling overhead increases
Solution Approach 1:
Multiple CRI-RSRP pairs are merged into a single group-based report. Instead of sending separate reports for each CRI, the invention combines them into structured groups where multiple CRIs and their corresponding RSRP values are transmitted together in one signaling message, reducing overall overhead while maintaining precise beam quality evaluation.
Data Source
AI summary
A method performed by a user equipment (UE) in a wireless communication system comprises receiving configuration information related to Channel State Information (CSI), receiving at least one DownLink-Reference Signal (DL RS), computing the CSI based on a measurement for the at least one DL RS, and reporting the CSI. The CSI includes resource indicators related to each group of one or more groups. The resource indicators are related to simultaneous transmission based on spatial filters by the UE.