Sidelink PRS Resource Selection with RSRP and Puncturing Thresholds
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Solution Overview
Problem
The increasing demand for mobile broadband communication and the need for enhanced reliability and low latency in wireless communication systems, particularly in sidelink (SL) communication, necessitates improved methods for selecting sidelink positioning reference signal (PRS) resources to optimize resource utilization and reduce interference.
Innovation Solution
A method and apparatus for obtaining SL resource pool configuration information, including resource ratios, puncturing thresholds, and RSRP thresholds, to determine a selection window and select SL PRS resources, thereby optimizing resource selection based on these parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If SL PRS resources are selected from all available candidate resources without exclusion, then resource utilization is improved, but interference increases and reliability deteriorates
Solution Approach 1:
The patent applies preliminary action by excluding unsuitable candidate resources before the actual SL PRS resource selection. The method determines a selection window and excludes first SL PRS candidate resources based on RSRP thresholds and puncturing thresholds before selecting the final resource, ensuring that only high-quality candidates are considered, thus improving reliability while maintaining efficient resource utilization
Solution Approach 2:
The patent applies local quality by differentiating between different candidate resources based on their specific characteristics. By evaluating each candidate resource's RSRP values against configured thresholds and applying puncturing rules based on local interference conditions, the method selects resources with locally optimal quality, improving both reliability and resource utilization efficiency
2Reliability
If resource selection criteria are made more selective to improve reliability, then communication reliability is improved, but resource utilization decreases
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting selection criteria based on configurable parameters such as RSRP thresholds and puncturing thresholds. These parameters can be adjusted to balance reliability and resource utilization requirements, allowing the system to adapt to different operational conditions while maintaining optimal performance
Solution Approach 2:
The patent applies partial action by excluding only the necessary candidate resources that fail to meet the minimum quality thresholds, rather than applying overly restrictive criteria to all candidates. This approach maintains resource utilization by selecting from the remaining qualified candidates while still improving reliability through targeted exclusion of poor-quality resources
3Ease of operation
If resource selection process is simplified to reduce complexity, then ease of operation is improved, but measurement precision and selection accuracy deteriorate
Solution Approach 1:
The patent applies segmentation by dividing the resource selection process into distinct stages: determining a selection window, excluding unsuitable candidates based on RSRP and puncturing thresholds, and selecting from remaining candidates. This segmented approach maintains operational simplicity while improving selection accuracy through systematic evaluation at each stage
Solution Approach 2:
The patent applies preliminary action by pre-determining the selection window and pre-excluding unsuitable candidate resources before the actual selection occurs. This preliminary processing simplifies the final selection step while ensuring high accuracy, as the choice is made from a pre-filtered set of qualified candidates rather than evaluating all possible resources
Data Source
AI summary
A method for performing wireless communication by a first device, and an apparatus for supporting same are provided. The method may comprise the steps of: acquiring sidelink (SL) resource pool configuration information including information related to a reference signal received power (RSRP) threshold value for SL positioning reference signal (PRS) resource selection, information related to a puncturing threshold value, and information related to a resource ratio; acquiring SL PRS configuration information; triggering the SL PRS resource selection in a slot; determining a selection window including multiple SL PRS candidate resources on the basis of the slot; determining at least one SL PRS candidate resource including a second SL PRS candidate resource by excluding a first SL PRS candidate resource from the multiple SL PRS candidate resources, on the basis of the information related to the RSRP threshold value, the information related to the puncturing threshold value, the information related to the resource ratio, and the SL PRS configuration information; and selecting an SL PRS resource from among the at least one SL PRS candidate resource.