NR Positioning Timing Error Grouping for Multi-Chain Accuracy
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Solution Overview
Problem
In the NR Rel-16 system, the use of reference signals for positioning results in inaccurate positioning due to varying transmission time delay errors across multiple transmitting and receiving chains, leading to inconsistent timing errors.
Innovation Solution
A method and apparatus that involve obtaining timing error group configuration parameters to divide timing errors into groups, generating corresponding information, and using this information for accurate positioning by adjusting reference signals and determining timing differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple transmitting chains or receiving chains are used to receive the reference signal, then the positioning system can handle more signals and improve coverage, but different chains have different transmission time delay errors which results in inaccurate positioning results
Solution Approach 1:
The patent segments timing errors into different groups based on their characteristics and sources. By dividing timing errors into multiple groups, the system can apply different correction strategies to each group, thereby maintaining positioning accuracy while utilizing multiple transmitting and receiving chains for enhanced signal coverage and adaptability.
Solution Approach 2:
The patent changes the parameter of timing error representation by introducing group-based timing error values instead of treating all timing errors uniformly. This parameter transformation allows the system to account for variations across different chains, enabling accurate positioning despite the presence of multiple chains with varying delay characteristics.
2Device complexity
If timing errors are not divided into groups, then the positioning process is simpler, but positioning accuracy deteriorates due to varying transmission time delays across different chains
Solution Approach 1:
The patent introduces a segmented approach to timing error handling by dividing timing errors into distinct groups. This segmentation adds structure to the positioning process, making it more manageable while significantly improving accuracy. The grouped timing errors allow for systematic correction across multiple transmitting and receiving chains without overwhelming complexity.
Solution Approach 2:
The patent transforms the timing error parameter from a single uniform value to a grouped set of values that reflect the actual variations across different chains. This parameter change enables the system to maintain relatively simple processing while achieving high positioning accuracy by accounting for chain-specific delay characteristics.
Data Source
AI summary
Embodiments of the present disclosure provide a positioning method and apparatus, and a readable storage medium, relating to the technical field of communications. The method includes: obtaining a first timing error group configuration parameter; receiving the first reference signal to obtain first positioning measurement value, and determining first receiving timing errors of the first positioning measurement value; dividing the first receive timing errors into groups according to the first timing error group configuration parameter to obtain at least one first receive timing error group for positioning a UE. The first reference signal includes one of a positioning reference signal and a sounding reference signal; and the first positioning measurement value is used to represent a distance between a transmitting end and the receiving end of the first reference signal. The embodiments of the present disclosure enhance flexibility of positioning services and pertinence of specific scenarios, effectively reduces receiving-transmitting timing errors, thereby improving positioning accuracy.