Relay Node Selection Using Link Measurements and AI Models

Solution Overview

Problem

Existing wireless communication systems face challenges in efficiently discovering and selecting optimal relay nodes for data transmission, particularly in complex network environments with varying link qualities and service requirements.

Innovation Solution

Implementing a relay discovery and selection mechanism that utilizes link measurements, artificial intelligence, and machine learning to assist in selecting the most suitable relay node based on combined link measurements and connectivity matrices, enabling efficient relay node selection and data transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If traditional relay discovery mechanisms are used, then device compatibility and basic functionality are maintained, but relay selection efficiency and network performance deteriorate in complex environments

Engineering Contradiction:

Improverelay selection efficiencyVSAvoidmeasurement and selection mechanism complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent performs link measurements and relay evaluations in advance before actual data transmission. The SU-WTRU measures link quality to multiple relay WTRUs and receives combined measurements from relays beforehand, enabling informed relay selection decisions without delays during active transmission.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent introduces relay WTRUs as intermediary nodes that perform combined link measurements and provide measurement reports to both the SU-WTRU and network. These relays act as mediators that simplify the selection process by pre-evaluating multiple potential relays and presenting consolidated information.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Measurement precision

If comprehensive link measurements are performed for all relays, then relay selection accuracy improves, but measurement time and processing overhead increase

Engineering Contradiction:

Improverelay selection accuracyVSAvoidmeasurement and selection time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent divides the measurement process into separate segments: the SU-WTRU performs measurements to discover relay WTRUs, while each relay WTRU independently performs combined link measurements to the SP-WTRU. This segmentation allows parallel measurement execution, reducing total measurement time while maintaining comprehensive evaluation.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent performs link measurements and relay evaluations in advance before actual data transmission. The SU-WTRU measures link quality to multiple relay WTRUs and receives combined measurements from relays beforehand, enabling informed relay selection decisions without delays during active transmission.

Inventive Principle:

Principle #10Preliminary action

3Reliability

If multiple relay candidates are evaluated, then transmission reliability improves, but device complexity and processing requirements worsen

Engineering Contradiction:

Improvedata transmission reliabilityVSAvoidrelay evaluation and selection complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent introduces relay WTRUs as intermediary nodes that perform combined link measurements and provide measurement reports to both the SU-WTRU and network. These relays act as mediators that simplify the selection process by pre-evaluating multiple potential relays and presenting consolidated information.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent implements feedback mechanisms where relay WTRUs provide combined measurement reports to the SU-WTRU and network based on their link quality assessments. This feedback enables the SU-WTRU to make informed relay selection decisions by receiving pre-processed evaluation data from multiple relay candidates.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS12526737B2Relay discovery and selection

Publication Date: 2026.01.13 INTERDIGITAL PATENT HOLDINGS INC

AI summary

A wireless transmit-receive unit (WTRU) may be provided. The WTRU may be configured to receive a first message from a first relay WTRU. The first message may indicate a service provided by a second WTRU and a first measurement associated with a broadcast message. The WTRU may be configured to determine a second measurement. The second measurement may be associated with the first message received from the first relay WTRU. The WTRU may be configured to send a second message to the first relay WTRU if the first measurement satisfies a first criteria for selecting a relay from a plurality of relays and the second measurement satisfies a second criteria for selecting the relay from the plurality of relays. The second message may comprise an indication to establish communication between the first WTRU and the second WTRU via the first relay WTRU.