Sidelink Positioning Reference Signal Measurement Grouping
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Solution Overview
Problem
Existing sidelink (SL) positioning technologies face challenges in accurately combining multiple SL positioning measurement samples due to limitations in averaging measurements across SL PRS resources, which are not guaranteed to be transmitted from the same antenna port, RF chain, or transmission beams, leading to inconsistent and inaccurate positioning results.
Innovation Solution
A solution that involves a location server requesting a receiving device to report SL positioning measurements based on multiple measurement samples and requesting a transmitting device to transmit SL PRSs through multiple resources, allowing the receiving device to obtain and combine these samples for improved accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple SL positioning measurement samples are averaged across different SL PRS resources, then the quantity of measurement data increases, but the measurement precision deteriorates due to inconsistent transmission conditions
Solution Approach 1:
The patent segments SL PRS resources into different transmission groups based on their transmission characteristics (antenna port, RF chain, beam). By grouping resources with identical transmission parameters together, the system enables accurate averaging only within homogeneous groups, preventing the mixing of incompatible measurement samples that would otherwise degrade precision.
Solution Approach 2:
The patent applies local quality by assigning different processing rules to different groups of SL PRS resources based on their transmission characteristics. Each group is processed according to its specific transmission parameters, ensuring that measurements are combined only when they share the same local transmission quality attributes, thereby maintaining measurement precision.
2Adaptability or versatility
If SL positioning measurements are combined from multiple SL PRS resources, then the positioning coverage and adaptability improve, but the reliability deteriorates due to transmission inconsistencies
Solution Approach 1:
The patent segments SL PRS resources into distinct transmission groups based on antenna port, RF chain, and beam characteristics. This segmentation allows the system to maintain high adaptability by supporting multiple resource combinations while ensuring reliability by only combining measurements from resources within the same transmission group, where conditions are consistent.
Solution Approach 2:
Instead of trying to make all SL PRS resources compatible for combining, the patent inverts the approach by identifying and grouping only those resources that are inherently compatible (same transmission parameters). This inversion ensures that reliability is maintained by default through consistent transmission conditions, while adaptability is achieved through the flexibility of choosing from multiple valid resource groups.
Data Source
AI summary
The present disclosure relates to a sidelink (SL) positioning measurement based on a plurality of measurement samples. In particular, a location server requests a receiving (RX) device to report SL positioning measurement that has been made from a plurality of measurement samples. The RX UE requests a transmitting (TX) UE to transmit a plurality of SL positioning reference signals (PRSs) through a plurality of SL PRS resources so that the RX UE can obtain multiple SL positioning measurement samples. In this way, it can improve SL positioning performance. The solution allows for high accuracy measurements and hence enables high accuracy SL positioning.