NR Sidelink Resource Mode Selection for Reliable Re-Selection
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Solution Overview
Problem
In NR sidelink communication, the existing resource selection modes lack reliability due to ambiguous bases for resource re-selection, leading to compromised transmission performance and reliability, especially in scenarios involving UE autonomous selection (mode 2).
Innovation Solution
A method and apparatus for sidelink resource selection that considers both a first and second resource selection mode, with assistance information, to determine the appropriate mode for operations like initial selection, re-evaluation, and preemption detection, ensuring reliable resource re-selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If UE performs resource re-selection based on ambiguous bases, then resource selection flexibility is improved, but transmission reliability deteriorates
Solution Approach 1:
The patent implements dynamic resource selection mode determination where the UE can adaptively switch between first and second resource selection modes based on real-time channel conditions and operational requirements. The system dynamically adjusts the resource selection strategy by evaluating whether to perform resource re-selection based on multiple determined bases rather than ambiguous single bases, thereby maintaining both flexibility and reliability.
2Adaptability or versatility
If UE performs unnecessary resource re-selection, then resource allocation adaptability is improved, but system transmission reliability is compromised
Solution Approach 1:
The patent introduces a feedback mechanism where the UE evaluates multiple determination bases (including channel conditions, resource availability, and operational requirements) before triggering resource re-selection. This feedback-driven approach prevents unnecessary re-selection by continuously monitoring whether actual conditions warrant mode switching, thereby maintaining system transmission reliability while preserving necessary adaptability.
3Stability of the object's composition
If UE fails to reselect resources in timely manner, then resource selection stability is improved, but transmission performance deteriorates
Solution Approach 1:
The patent implements preliminary determination of multiple bases for resource re-selection before actual re-selection is needed. By pre-evaluating channel conditions, resource availability, and operational requirements, the system prepares the necessary criteria in advance, enabling timely resource re-selection when conditions change, thus maintaining both stability and transmission performance.
4Adaptability or versatility
If multiple resource selection modes are available, then resource selection versatility is improved, but mode selection complexity increases
Solution Approach 1:
The patent segments the resource selection process into distinct first and second modes with clearly defined determination bases for each. The first mode operates under specific conditions while the second mode operates under different conditions, creating a segmented decision framework that reduces complexity by providing structured, condition-based selection criteria rather than requiring complex continuous optimization.
Data Source
AI summary
This application discloses a sidelink resource selection method and a terminal. The sidelink resource selection method includes: determining a resource selection mode usable for a target operation, where the resource selection mode includes a first resource selection mode and a second resource selection mode, and resource selection assistance information is considered for use of the second resource selection mode; in a case that both the first resource selection mode and the second resource selection mode are usable for the target operation, determining, in a first manner, a resource selection mode used for the target operation; and performing the target operation by using the resource selection mode determined.