Group-Based Beam Reporting for Multi-TRP 5G Networks
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently measuring and reporting beam metrics across multiple transmission-reception points (TRPs) in 5G/NR mobile communications, which affects network performance and capacity.
Innovation Solution
The implementation of a user equipment (UE) and base station (BS) system that identifies and reports at least a first group of two resource indicators and corresponding beam metrics associated with different entity IDs, using synchronization signal block (SSB) resource indicators or channel state information (CSI) reference signal resource indicators, along with layer-1 reference signal received powers (L1-RSRPs) or layer-1 signal to interference and noise ratios (L1-SINRs).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If beam measurement and reporting is performed across multiple TRPs using traditional methods, then coverage area is maintained, but measurement precision and reporting efficiency deteriorate
Solution Approach 1:
The patent segments the beam reporting process into multiple groups, where each group contains resource indicators and beam metrics for one or more TRPs. This segmentation allows the UE to report beam measurements for multiple TRPs in an organized manner, improving measurement precision while managing system complexity through structured reporting groups.
Solution Approach 2:
The patent introduces entity IDs as an additional dimension to identify different TRPs, enabling the system to distinguish and report measurements from multiple transmission-reception points. This dimensional addition allows precise beam metric reporting across multiple TRPs without confusion, resolving the contradiction between measurement precision and system complexity.
2Productivity
If group-based beam reporting is implemented for multiple TRPs, then network capacity is improved, but device complexity increases
Solution Approach 1:
The patent divides beam reporting into multiple groups, with each group containing resource indicators and beam metrics for specific TRPs. This segmentation enables efficient network capacity utilization by organizing reports from multiple TRPs, while the structured group format helps manage UE processing complexity through standardized reporting templates.
Solution Approach 2:
The patent changes the reporting parameters by introducing group-based structures with entity IDs, resource indicators, and beam metrics. This parameter organization improves network capacity by enabling simultaneous tracking of multiple TRPs, while the standardized parameter changes provide a manageable framework for UE processing.
3Loss of information
If detailed beam metrics are reported for each TRP, then information accuracy is improved, but information loss increases due to reporting overhead
Solution Approach 1:
The patent merges resource indicators and beam metrics into unified reporting groups associated with entity IDs. This merging approach reduces reporting overhead by consolidating information that would otherwise be transmitted separately, while maintaining measurement precision through the structured preservation of detailed beam metrics within each group.
Solution Approach 2:
The patent creates a universal reporting structure where groups can contain resource indicators and beam metrics for one or more TRPs. This multi-functional group structure reduces overall reporting overhead by allowing flexible consolidation of measurement data, while maintaining the accuracy of individual beam metrics through standardized field definitions.
Data Source
AI summary
Methods and apparatuses for beam measurement and reporting in a wireless communication system. A method of operating a user equipment (UE) includes identifying an indication for reporting, in a channel state information (CSI) report, at least a first group of two resource indicators and corresponding beam metrics associated with a first entity identity (ID) and a second entity ID, respectively, and transmitting, in the CSI report, the first group of two resource indicators and the corresponding beam metrics. The first or second entity IDs correspond to at least one of: a physical cell identity (PCI) corresponding to a serving cell PCI or a PCI different from the serving cell PCI; and a PCI index pointing to a PCI corresponding to the serving cell PCI or a PCI different from the serving cell PCI in a list of PCIs that are higher layer configured to the UE.