Sidelink PRS Resource Reselection Under Dynamic Check Conditions
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Solution Overview
Problem
There is a lack of definitive methods for selecting and reselecting resources for transmitting sidelink positioning reference signals (SL PRS) in sidelink communication, which affects the accuracy of SL positioning.
Innovation Solution
A sidelink communication method that includes triggering a check procedure when preset conditions are met to determine the selection or reselection of resources for SL PRS transmission, involving autonomous resource allocation, checking for conditions such as DRX activation times, resource pool reconfiguration, and meeting transmission requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If autonomous resource allocation mode is used for SL PRS transmission, then resource selection flexibility is improved, but resource selection accuracy deteriorates due to lack of check procedure
Solution Approach 1:
The patent introduces a check procedure that provides feedback on resource selection accuracy. The check procedure evaluates whether the selected resource meets transmission requirements and triggers reselection if necessary, creating a closed-loop feedback mechanism that improves measurement precision while maintaining autonomous allocation flexibility
Solution Approach 2:
The check procedure is performed in advance before finalizing resource selection. By conducting preliminary checks on transmission requirements, resource pool configuration, and timing conditions, the system ensures accurate resource selection is achieved before autonomous allocation occurs
2Measurement precision
If check procedure is performed frequently to ensure transmission requirements are met, then resource selection accuracy is improved, but system complexity increases
Solution Approach 1:
The check procedure is designed to be dynamic rather than static. It automatically adjusts its execution based on changing conditions such as resource pool reconfiguration, DRX activation time changes, and transmission requirement variations. This dynamic approach maintains high accuracy while reducing unnecessary checks in stable conditions
Solution Approach 2:
The system monitors changes in key parameters including resource pool configuration, timing parameters, and transmission requirements. When parameter changes occur, the check procedure is triggered accordingly. This parameter-driven approach ensures accurate resource selection without performing unnecessary checks during stable conditions
3Adaptability or versatility
If resource pool is reconfigured to meet changing transmission requirements, then adaptability is improved, but resource selection stability deteriorates
Solution Approach 1:
The check procedure performs preliminary verification when resource pool reconfiguration occurs. By checking whether the reconfigured resource pool still satisfies transmission requirements before finalizing resource selection, the system maintains stability while enabling adaptability to changing conditions
Data Source
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AI summary
Embodiments of the present disclosure disclose a sidelink communication method and apparatus therefor, which may be applied to a communication system. The method comprises: triggering execution of a check procedure when a first preset condition is met, the check procedure being used to determine whether to select or reselect a sidelink (SL) positioning reference signal (PRS) sending resource. In the present solution, a check condition is preset, and execution of the check procedure is triggered when the preset condition is met, so as to implement checking of selection and reselection of the SL PRS sending resource.