NR Sidelink Resource Selection Using UE Trustworthiness Weighting

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Solution Overview

Problem

Existing NR sidelink communication systems lack effective resource coordination mechanisms, leading to interference, packet collisions, and inefficient resource usage due to the absence of systematic criteria for evaluating the trustworthiness of resource suggestions from different UEs, particularly in out-of-coverage scenarios.

Innovation Solution

Introduce a trustworthiness value or metric to assess the reliability of resource suggestions from other UEs, considering factors like capability, role, and hierarchy, allowing UEs to make informed decisions on resource selection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If resource coordination messages are exchanged between UEs without trustworthiness assessment, then resource selection can proceed quickly, but resource collisions and interference increase due to unreliable resource suggestions

Engineering Contradiction:

Improveresource allocation reliabilityVSAvoidtrustworthiness assessment complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces the manual/mechanical approach of resource selection with an automated trustworthiness assessment system. The UE automatically evaluates trustworthiness values based on pre-configured criteria (signal strength, message frequency, resource usage patterns) and uses these assessments to weight resource suggestions, substituting automated intelligent evaluation for simple resource selection mechanisms.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces trustworthiness values as a new parameter that changes based on multiple factors including signal strength, message frequency, and resource usage patterns. This dynamic parameter allows the system to adaptively weigh resource suggestions from different UEs, transforming the static resource selection process into a dynamic, reliability-based decision-making system.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If multiple resource suggestions are received from different UEs, then resource selection options increase, but difficulty in selecting optimal resources increases without systematic evaluation criteria

Engineering Contradiction:

Improveresource selection flexibilityVSAvoidoptimal resource identification difficulty

Core Design Contradiction:

Adaptability or versatilityVSDifficulty of detecting and measuring

Solution Approach 1:

The patent segments the resource selection process into distinct evaluation stages: receiving resource suggestions, assessing trustworthiness of each suggesting UE, weighting suggestions based on trustworthiness values, and selecting resources from weighted suggestions. This segmentation transforms the complex decision-making process into manageable, systematic steps that can be executed automatically.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent creates a composite evaluation metric by combining multiple factors (signal strength, message frequency, resource usage patterns) into a single trustworthiness value. This composite metric allows the system to comprehensively evaluate the reliability of resource suggestions while maintaining computational efficiency and systematic decision-making.

Inventive Principle:

Principle #40Composite materials

3Productivity

If resource suggestions are accepted without verification, then resource selection speed increases, but resource usage efficiency decreases due to collisions and interference

Engineering Contradiction:

Improveresource selection speedVSAvoidresource waste from collisions

Core Design Contradiction:

ProductivityVSLoss of energy

Solution Approach 1:

The patent performs preliminary trustworthiness assessment and resource verification before final resource selection and transmission. By evaluating the reliability of resource suggestions in advance and cross-checking multiple weighted suggestions, the system identifies optimal resources that are less likely to cause collisions, preventing resource waste before it occurs.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements a feedback mechanism where resource usage outcomes are monitored and used to update trustworthiness values for future resource suggestions. This closed-loop system continuously improves resource selection accuracy by learning from past performance, reducing collisions and interference over time while maintaining efficient resource utilization.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS12501408B2Method for performing resource selection for transmission, by a user equipment, UE, in a telecommunication network, as well as the corresponding UE and a related computer program product

Publication Date: 2025.12.16 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

AI summary

A method for performing resource determination for transmission, by a User Equipment, UE, in a telecommunication network, wherein said method comprises the steps of receiving, by said UE, from at least one UE in said telecommunication network, a resource coordination message in device-to-device, D2D, based transmissions, wherein said resource coordination message comprises a resource information to be taken into account by said UE when determining resources for transmission, determining, by said UE, a trustworthiness value for each of said at least one UE separately, wherein said trustworthiness value indicates a trustworthiness of a particular UE and determining resources for said transmission based on said resource information and said determined trustworthiness value for each of said at least one UE separately.