Sidelink Resource Set Selection for Reliable Groupcast UE Transmission

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Solution Overview

Problem

In groupcast communication of sidelink transmissions, user equipment (UE) faces low reliability due to the inability to receive information from other in-group UEs during autonomous resource selection, leading to inefficiencies in resource allocation.

Innovation Solution

The UE determines a first resource set, which is a subset of a second resource set, to avoid resource selection conflicts and improve communication reliability by selecting a target resource within this subset.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If autonomous resource selection is used by UE for sidelink communication, then resource allocation flexibility is improved, but transmission reliability deteriorates due to inability to receive information from other UEs during groupcast communication

Engineering Contradiction:

Improveresource allocation flexibilityVSAvoidtransmission reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The resource pool is divided into multiple resource sets, where each resource set contains resources that can be used for transmission. The UE determines a first resource set from the second resource set based on channel monitoring results, effectively segmenting the resource selection process to improve reliability while maintaining flexibility.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The UE performs channel monitoring before selecting transmission resources to identify resources with less interference. This preliminary action allows the UE to make informed resource selection decisions, improving transmission reliability by avoiding resources that are likely to cause or experience conflicts.

Inventive Principle:

Principle #10Preliminary action

2Measurement precision

If UE performs channel monitoring before resource selection, then resource selection accuracy is improved, but time consumption increases

Engineering Contradiction:

Improveresource selection accuracyVSAvoidtime consumption

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The channel monitoring is performed partially by monitoring only certain physical uplink shared channels (PUSCH) or physical sidelink shared channels (PSSCH) transmissions from other UEs, rather than monitoring all possible transmissions. This partial monitoring approach maintains sufficient resource selection accuracy while reducing the time consumption compared to comprehensive monitoring.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS12628131B2Resource selection method and device

Publication Date: 2026.05.12 VIVO MOBILE COMM CO LTD

AI summary

A resource selection method and a device are provided. The method is performed by a user equipment. The method comprises determining a first resource set. The first resource set is a subset of a second resource set. The method further comprises selecting a target resource according to the first resource set.