Inter-UE Sidelink Resource Triggering for Lower Interference

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Solution Overview

Problem

Existing wireless communication systems face challenges in efficiently coordinating sidelink (SL) resources among user equipment (UEs) for optimal data transmission, particularly in 5G/NR mobile communications, which can lead to interference and suboptimal resource utilization.

Innovation Solution

The implementation of a UE configured with a transceiver and processor to enable inter-UE coordination by determining a target UE, transmitting and receiving inter-UE coordination information, and selecting SL resources for efficient SL channel transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If inter-UE coordination is implemented for SL resource allocation, then SL resource utilization efficiency is improved, but system complexity and signaling overhead increase

Engineering Contradiction:

ImproveSL resource utilization efficiencyVSAvoidsystem complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The coordination mechanism is segmented into distinct functional components: resource pool configuration, coordination information generation, signaling transmission, and resource selection. Each UE independently performs these segmented tasks, reducing overall system complexity while maintaining coordination benefits

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A configured message acts as an intermediary that enables inter-UE coordination without requiring direct complex interactions between UEs. The configuration message carries necessary coordination parameters, simplifying the coordination process while improving resource utilization efficiency

Inventive Principle:

Principle #24Intermediary (Mediator)

2Measurement precision

If inter-UE coordination signaling is transmitted to activate or trigger coordination information, then coordination accuracy is improved, but signaling overhead increases

Engineering Contradiction:

Improvecoordination accuracyVSAvoidsignaling overhead

Core Design Contradiction:

Measurement precisionVSLoss of information

Solution Approach 1:

The coordination mechanism uses periodic or event-triggered signaling to activate or trigger coordination information transmission. Instead of continuous signaling, UEs exchange coordination information only when necessary (e.g., when resource pool configuration changes or specific events occur), maintaining coordination accuracy while reducing signaling overhead

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system dynamically changes signaling parameters based on coordination needs. The configuration message includes parameters that control when and how coordination information is transmitted, allowing the system to adjust signaling overhead according to actual coordination requirements while maintaining necessary accuracy

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12484062B2Method and apparatus for configuration and signaling of SL resources for inter-UE co-ordination

Publication Date: 2025.11.25 SAMSUNG ELECTRONICS CO LTD

AI summary

A method of operating a user equipment (UE) is provided. The method includes receiving a configuration message to enable inter-UE co-ordination for a sidelink (SL) resource pool, determining a target UE for a SL transmission, and transmitting, to the target UE, a signal to activate or trigger transmission of inter-UE co-ordination information. The method further includes receiving the inter-UE co-ordination information, determining a set of candidate SL resources based on the inter-UE co-ordination information, selecting a SL resource within the determined set, and transmitting a SL channel on the SL resource.