Beam Shape Reporting for Low-Latency 5G Positioning
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Solution Overview
Problem
Current wireless communication systems, particularly in the transition to 5G, face challenges in efficiently reporting antenna configurations and beam shapes for accurate positioning, which affects spectral efficiency and latency.
Innovation Solution
A method is introduced where a base station determines an antenna configuration, creates a table mapping antenna elements to phase or amplitude shifts, and reports this information to a position estimation entity, along with transformation information for beam shape transformations, to enhance positioning reference signals and beam alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If detailed antenna configuration and beam shape information is reported for accurate positioning, then positioning precision is improved, but signaling overhead and latency increase
Solution Approach 1:
The patent segments the beam shape information reporting by dividing antenna elements into groups and reporting representative parameters for each group rather than individual elements. This segmentation reduces the total number of parameters to be reported while maintaining sufficient positioning accuracy through the use of representative beam shape parameters for each antenna element group.
Solution Approach 2:
The patent extracts only the essential beam shape parameters needed for positioning accuracy, such as representative phase shifts and amplitude shifts for antenna element groups, rather than reporting complete detailed configurations. This extraction approach removes redundant information while preserving the critical data needed for accurate positioning.
2Measurement precision
If comprehensive antenna configuration reporting is performed, then positioning accuracy is improved, but spectral efficiency deteriorates
Solution Approach 1:
The patent segments antenna elements into groups and reports aggregated beam shape parameters for each group rather than individual element parameters. This segmentation reduces the total signaling overhead while maintaining positioning accuracy by capturing the essential spatial characteristics of each antenna group through representative parameters.
Solution Approach 2:
The patent applies partial action by reporting only the necessary subset of beam shape parameters (representative parameters for antenna groups) rather than complete detailed configurations. This partial reporting approach provides sufficient positioning information while significantly reducing signaling overhead and improving spectral efficiency.
3Measurement precision
If detailed beam shape transformation information is reported, then beam alignment precision is improved, but device complexity increases
Solution Approach 1:
The patent segments the beam shape transformation information by grouping antenna elements and reporting representative transformation parameters for each group. This segmentation simplifies the processing complexity while maintaining beam alignment precision by focusing on the essential spatial relationships within each antenna group rather than individual element transformations.
Solution Approach 2:
The patent extracts only the critical beam shape transformation parameters needed for accurate beam alignment, such as representative phase and amplitude shifts for antenna element groups. This extraction removes redundant transformation information while preserving the essential data required for precise beam alignment, thereby reducing processing complexity.
Data Source
AI summary
Disclosed are techniques for communication. In an aspect, gNB may report antenna configuration and table that maps antenna element(s) to phase shift and/or amplitude shift to a position estimation entity (PDE). The PDE may derive beam shape based on the reported information. In another aspect, gNB may report transformation information by which a first beam shape of a first beam is transformed into a second beam shape of a second beam. The PDF may derive the second beam shape of the second beam based in part upon the transformation information