NR Sidelink Candidate Resource Selection with Assistance Sets

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Solution Overview

Problem

Existing 3GPP NR sidelink communication protocols lack clear definitions for assistance resource sets and effective resource selection processes, leading to potential empty candidate resource sets and failure to meet resource selection requirements.

Innovation Solution

Define assistance resource sets as preferred or non-preferred sets, and apply set operations such as intersection or difference to determine candidate resource sets, with independent ratio thresholds for resource selection, ensuring sufficient resources for reliable communication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If existing 3GPP NR sidelink communication protocols are used without clear definitions for assistance resource sets, then the system maintains simplicity in protocol design, but candidate resource sets may become empty and resource selection requirements cannot be met

Engineering Contradiction:

Improveresource selection reliabilityVSAvoidprotocol definition complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The resource set is segmented into assistance resource sets provided by second devices and candidate resource sets determined by the first device. This segmentation allows clear definition of assistance resource sets with preferred/non-preferred classifications, ensuring reliable resource selection while maintaining protocol simplicity through modular structure

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Second devices perform preliminary actions by determining and providing assistance resource sets before the first device performs resource selection. This preliminary classification of resources as preferred or non-preferred ensures that sufficient candidate resources are available when the first device selects transmission resources, preventing empty candidate sets

Inventive Principle:

Principle #10Preliminary action

2Reliability

If assistance resource sets are defined with preferred and non-preferred classifications, then resource selection reliability is improved, but the complexity of resource management increases

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidresource selection ease

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

Different quality levels are assigned to different resources within the assistance resource set through preferred and non-preferred classifications. The first device can selectively operate on preferred resources first, improving communication reliability while maintaining ease of operation by following a hierarchical selection process that simplifies decision-making

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The state of resources is changed by classifying them as preferred or non-preferred in the assistance resource set. This parameter change enables the first device to adjust its resource selection strategy dynamically, improving reliability by prioritizing preferred resources while keeping the selection process simple through clear classification criteria

Inventive Principle:

Principle #35Parameter changes

3Quantity of substance

If set operations such as intersection or difference are applied to determine candidate resource sets, then sufficient resources are guaranteed for transmission, but the computational complexity increases

Engineering Contradiction:

Improvenumber of candidate resourcesVSAvoidcomputation complexity

Core Design Contradiction:

Quantity of substanceVSDevice complexity

Solution Approach 1:

Instead of performing complete set operations on all possible resources, the first device applies set operations only on the assistance resource set provided by second devices. This partial action ensures sufficient candidate resources are obtained through intersection or difference operations while limiting computational complexity to a manageable subset of resources

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

Second devices perform preliminary filtering and classification of resources into assistance resource sets before the first device performs set operations. This preliminary action reduces the scope of computation required for set operations, ensuring sufficient candidate resources are available while minimizing computational complexity through pre-processed information

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12513663B2Method and device for resource selection, and storage medium

Publication Date: 2025.12.30 BEIJING XIAOMI MOBILE SOFTWARE CO LTD

AI summary

A method for resource selection, performed by a first device, includes: determining an assistance resource set provided by a second device, the assistance resource set comprising a preferred resource set to be used by the first device or a non-preferred resource set to be used by the first device; and determining a first candidate resource set for transmission resource selection based on the assistance resource set.