NR Sidelink SL-PRS Resource Exclusion for Collision Reduction

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Solution Overview

Problem

The existing technologies have not effectively addressed the issue of selecting and selecting sidelink (SL-PRS) resources in a new radio sidelink (NR SL) system, particularly in scenarios where sidelink positioning reference signal (SL-PRS) resources need to be excluded.

Innovation Solution

A method and apparatus for a terminal device to select at least one SL-PRS resource from an SL-PRS resource set, utilizing programmable logic circuitry and computer instructions to facilitate SL-PRS transmission, with specific configurations for frequency and time-domain resources, including random selection and resource exclusion processes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If SL-PRS resources are excluded from the resource set, then resource collisions and interference are minimized, but resource selection complexity increases

Engineering Contradiction:

Improveresource collision minimizationVSAvoidresource selection complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The SL-PRS resource set is divided into multiple resource pools or groups, allowing the terminal device to perform exclusion operations on segmented portions rather than the entire set at once. This reduces the computational complexity of resource selection while still achieving collision minimization through systematic exclusion of resources used by other devices.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The terminal device performs resource exclusion operations in advance before final resource selection. By pre-identifying and excluding resources that are likely to cause collisions (based on sensed transmissions or predefined patterns), the device simplifies the subsequent selection process and improves reliability without requiring complex real-time decision-making.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If resource exclusion processes are implemented, then communication reliability improves, but processing time increases

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidresource selection time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

Resource exclusion and selection operations are performed periodically at predetermined intervals rather than continuously. This allows the terminal device to maintain reliable communication by regularly updating its resource choices while avoiding excessive processing time through structured periodic execution instead of continuous operation.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The terminal device performs partial exclusion operations, focusing only on the most critical resources that are likely to cause collisions, rather than exhaustively evaluating and excluding all potential conflict resources. This achieves sufficient communication reliability with reduced processing time by addressing the most significant sources of interference.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS20260067857A1Method for resource selection, and device and chip

Publication Date: 2026.03.05 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD

AI summary

Provided is a method for resource selection, which relates to the technical field of mobile communications. The method is performed by a terminal device, and includes: selecting at least one sidelink positioning reference signal (SL-PRS) resource from an SL-PRS resource set, wherein the SL-PRS resource is used to transmit an SL-PRS.