Sidelink Resource Selection With Shared Threshold Feedback

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Solution Overview

Problem

In sidelink communications, when multiple sidelink communication modules with different resource exclusion thresholds coexist, they can cause interference and collisions due to inconsistent resource selection, either selecting occupied resources or excluding available ones, leading to inefficient resource utilization.

Innovation Solution

A UE with multiple sidelink communication modules dynamically adjusts thresholds for resource exclusion by sharing sensing and reservation information between modules, allowing for synchronized resource selection and exclusion based on shared threshold parameters.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If the first sidelink communication module uses a higher threshold for resource exclusion, then fewer resources are excluded (more candidate resources available), but resources selected may be occupied by the second sidelink communication module causing interference and collisions

Engineering Contradiction:

Improvenumber of candidate resourcesVSAvoidresource selection reliability

Core Design Contradiction:

Quantity of substanceVSReliability

Solution Approach 1:

The first sidelink communication module receives feedback information from the second sidelink communication module including sensing results and resource reservation information. This feedback enables the first module to adjust its resource exclusion decisions based on the actual resource usage status of the second module, resolving the contradiction between having more candidate resources and ensuring reliable resource selection without interference

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The feedback information exchanged between the two sidelink communication modules acts as an intermediary that conveys resource status from the second module to the first module. This intermediary information allows the first module to make informed resource exclusion decisions that account for the second module's threshold and resource reservations, preventing both interference and unnecessary resource exclusion

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If the first sidelink communication module uses a lower threshold for resource exclusion, then resource exclusion is more conservative (fewer collisions), but available candidate resources are unnecessarily eliminated

Engineering Contradiction:

Improveresource selection reliabilityVSAvoidnumber of candidate resources

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The first sidelink communication module dynamically adjusts its resource exclusion threshold parameter based on the feedback received from the second module. Instead of using a fixed low threshold that unnecessarily excludes resources, the module adapts its threshold parameter to match the second module's resource usage patterns, optimizing the balance between reliability and resource availability

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The resource exclusion threshold is transformed from a static parameter to a dynamic one that changes based on real-time feedback from the second sidelink communication module. This dynamic adjustment allows the system to optimize resource utilization by adapting the exclusion criterion to current resource status, preventing both over-exclusion and interference

Inventive Principle:

Principle #15Dynamics

3Adaptability or versatility

If different threshold parameters are used in different sidelink communication modules, then each module can optimize for its specific requirements, but resource selection becomes inconsistent leading to interference or wasted resources

Engineering Contradiction:

Improvemodule-specific optimizationVSAvoidresource selection consistency

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The feedback mechanism allows each module to maintain its own optimized threshold parameters while receiving information about the other module's resource usage. The first module uses the feedback to adjust its resource exclusion decisions, ensuring consistency with the second module's resource reservations despite having different threshold parameters, thus maintaining both adaptability and stability

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS20250374308A1Methods and apparatuses for coexistence of sidelink communications

Publication Date: 2025.12.04 TOYOTA JIDOSHA KK

AI summary

Disclosed are methods, apparatuses, and systems for resource selection for a user equipment (UE) in a first sidelink communication. The method includes: determining, by a first sidelink communication module, a selection window; setting at least one first threshold parameter for a resource exclusion at the first sidelink communication module; initializing a candidate resource set; receiving, from a second sidelink communication module, at least one of: at least one second threshold parameter used for a resource exclusion at the second sidelink communication module, sidelink sensing information obtained by the second sidelink communication module, or resource reservation information collected by the second sidelink communication module; determining one or more final candidate resources in the first sidelink communication using the at least one first threshold parameter and the at least one information received from the second sidelink communication module; and reporting the determined one or more final candidate resources to a higher layer.