Sidelink PRS Conflict Indication for Coordinated Allocation

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Solution Overview

Problem

The independent selection of SL PRS resources by terminal devices leads to conflicts and inefficiencies, including hidden node problems, half-duplex issues, and excessive power consumption, which affect the performance of sidelink communication.

Innovation Solution

Implementing a wireless communication method where a second terminal device transmits conflict indication information to a target terminal device when a conflict with a first SL PRS resource is detected, allowing for coordinated resource selection and avoidance of conflicts.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If terminal devices independently select SL PRS resources, then resource selection flexibility is improved, but resource conflicts and interference increase

Engineering Contradiction:

Improveresource selection flexibilityVSAvoidresource conflict rate

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent implements a feedback mechanism where terminal devices transmit conflict indication information to notify others of resource conflicts. This allows the system to maintain independent resource selection flexibility while using feedback to resolve conflicts and improve reliability through coordinated resource usage.

Inventive Principle:

Principle #23Feedback

2Device complexity

If terminal devices independently select SL PRS resources, then device complexity is reduced, but power consumption increases

Engineering Contradiction:

Improveresource selection complexityVSAvoidpower consumption

Core Design Contradiction:

Device complexityVSUse of energy by moving object

Solution Approach 1:

The patent enables terminal devices to independently select resources without requiring complex centralized coordination. Each device autonomously selects SL PRS resources and uses conflict indication information to resolve conflicts, maintaining low device complexity while reducing overall power consumption through efficient self-coordinated resource allocation.

Inventive Principle:

Principle #25Self-service

3Adaptability or versatility

If terminal devices independently select SL PRS resources, then system scalability is improved, but hidden node problems and half-duplex issues worsen

Engineering Contradiction:

Improvesystem scalabilityVSAvoidhidden node problems

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces conflict indication information as an intermediary mechanism that mediates between independently selecting terminal devices. This intermediary allows scalable independent resource selection while addressing hidden node problems by enabling devices to awareness of conflicts and adjust their behavior accordingly.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS20250261161A1Wireless communication method and apparatus

Publication Date: 2025.08.14 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD

AI summary

The present application provides a wireless communication method and apparatus. The method comprises: if a first SL PRS resource indicated by a first terminal device is in a conflict, a second terminal device sends first conflict indication information to a target terminal device, wherein the target terminal device is the first terminal device or a third terminal device, and the third terminal device is a terminal device having a sidelink transmission resource that conflicts with the first SL PRS resource.