Terminal Resource Signaling for Hidden-Node-Resilient NR V2X

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Solution Overview

Problem

Existing NR V2X communication systems face issues with low reliability due to hidden nodes and half-duplex limitations, leading to resource collisions and reduced transmission reliability.

Innovation Solution

A method where a first terminal device sends semi-static first information to assist second terminal devices in selecting or reserving cycle resources for data, trigger, or assistance information transmission, using configuration information such as resource location, duration, and QoS parameters to improve reliability and reduce delay.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If terminals independently determine resources using pattern 2 with sensing and random selection, then device complexity and automation are improved, but transmission reliability deteriorates due to hidden nodes and resource collisions

Engineering Contradiction:

Improveindependent resource determinationVSAvoidtransmission reliability

Core Design Contradiction:

Extent of automationVSReliability

Solution Approach 1:

The patent introduces a base station as an intermediary that provides semi-static resource configuration information to terminals. This mediator resolves the reliability issue by coordinating resource allocation across multiple terminals, preventing hidden node problems and collisions while maintaining the automation benefits of pattern 2 operation.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The base station performs preliminary action by pre-configuring semi-static resource allocation patterns before terminals engage in independent resource selection. This advance coordination establishes a framework that guides terminal resource choices, reducing conflicts while preserving automation.

Inventive Principle:

Principle #10Preliminary action

2Adaptability or versatility

If terminals use dynamic resource reservation with chain resource reservation manner, then adaptability is improved, but transmission reliability deteriorates due to half-duplex limitations and hidden nodes

Engineering Contradiction:

Improvedynamic resource reservationVSAvoidtransmission reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent applies local quality by providing different resource allocation approaches for different scenarios: semi-static configuration for reliable communication and dynamic selection for flexible adaptation. Terminals can switch between these modes based on local conditions, achieving both reliability and adaptability.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The system combines static and dynamic elements by allowing terminals to use semi-static resource configurations that can be updated or overridden by dynamic selections when needed. This dynamic adaptability maintains versatility while the semi-static foundation ensures reliability.

Inventive Principle:

Principle #15Dynamics

3Ease of operation

If terminals perform sensing and random resource selection from candidate resource set, then ease of operation is improved, but loss of time increases due to resource collisions and retransmissions

Engineering Contradiction:

Improveresource selection processVSAvoidtransmission delay

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The base station provides feedback in the form of semi-static resource configuration information that guides terminal resource selection. This feedback mechanism reduces random collisions by coordinating selections across terminals, decreasing retransmissions and associated delays while maintaining operational simplicity.

Inventive Principle:

Principle #23Feedback

4Adaptability or versatility

If terminals work outside base station range using pre-configured information, then adaptability is improved, but transmission reliability deteriorates due to lack of real-time resource coordination

Engineering Contradiction:

Improveout-of-coverage operationVSAvoidtransmission reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The base station's semi-static resource configuration serves multiple functions: it provides real-time coordination when terminals are in coverage and maintains reliable resource allocation patterns when terminals operate outside coverage. This universal approach ensures reliability across different operational scenarios.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP4161108B1Information transmission method and apparatus, and terminal device

Publication Date: 2025.12.10 VIVO MOBILE COMM CO LTD

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AI summary

Disclosed are an information transmission method and apparatus, and a terminal device. The method comprises: sending first information to at least one second terminal device, wherein the first information is used for assisting the second terminal device in selecting or reserving a cycle resource for data transmission; or the first information is used for assisting the second terminal device in selecting or reserving a cycle resource for the transmission of trigger information; or the first information is used for assisting the second terminal device in selecting or reserving a cycle resource for the transmission of assistance information. The trigger information is used for triggering the transmission of the assistance information, and the assistance information is used for assisting a third terminal device in selecting or reserving a resource for data transmission.