Sidelink Resource Overlap Selection for Reliable V2X Transmission

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Solution Overview

Problem

Existing vehicle-to-everything (V2X) communication systems face challenges in mode 2 resource allocation, where terminal devices autonomously select resources, leading to reduced reliability and increased latency.

Innovation Solution

A method where a first terminal device receives information about a set of candidate resources from a second terminal device, determines a second set, identifies an overlap, and selects target resources based on this overlap to enhance resource allocation coordination.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If terminal devices autonomously select resources in mode 2, then resource allocation flexibility is improved, but resource conflicts and packet loss increase

Engineering Contradiction:

Improveresource allocation flexibilityVSAvoidpacket loss rate

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

Terminal devices perform sensing operations in advance to identify and reserve candidate resources before actual transmission. This preliminary resource selection based on channel conditions and interference assessment prevents conflicts during actual transmission, reducing packet loss while maintaining autonomous allocation flexibility

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements feedback mechanisms where terminal devices monitor resource allocation outcomes and adjust their sensing and selection strategies accordingly. This feedback loop enables continuous optimization of resource selection to minimize conflicts and packet loss while preserving the adaptability of autonomous resource allocation

Inventive Principle:

Principle #23Feedback

2Adaptability or versatility

If terminal devices perform sensing and resource selection, then resource allocation adaptability is improved, but communication latency increases

Engineering Contradiction:

Improveresource allocation adaptabilityVSAvoidcommunication latency

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

Sensing and resource selection operations are performed in advance during idle periods or before transmission deadlines. By completing resource identification and reservation beforehand, the system reduces the time required at transmission moment while maintaining adaptability through ongoing sensing activities

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The resource selection process is divided into discrete sensing intervals and selection phases. This segmentation allows the system to perform sensing operations periodically without continuously blocking transmission, balancing adaptability with reduced latency by processing resource decisions in manageable time segments

Inventive Principle:

Principle #1Segmentation

3Device complexity

If terminal devices autonomously allocate resources, then network complexity is reduced, but resource conflicts increase

Engineering Contradiction:

Improvenetwork complexityVSAvoidresource conflict rate

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

Terminal devices autonomously perform sensing, resource selection, and conflict avoidance without centralized coordination. Each device independently monitors channel conditions, identifies suitable resources, and makes allocation decisions based on pre-defined protocols, eliminating the need for complex network-wide resource management while reducing conflicts through distributed intelligence

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

Devices perform preliminary sensing and resource reservation before transmission to proactively avoid conflicts. By identifying and securing resources in advance based on sensed channel conditions, the system prevents conflicts from occurring rather than resolving them after they arise, maintaining low network complexity

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12628188B2Method, device and computer readable medium for communications

Publication Date: 2026.05.12 NEC CORP

AI summary

Embodiments of the present disclosure relate to a method, device and computer readable media for communications. A method comprises receiving, at a first terminal device from a second terminal device, information about a first set of candidate resources for the first terminal device to perform a sidelink transmission. The method further comprises determining a second set of candidate resources for performing the sidelink transmission. The method further comprises determining a first subset of the second set by identifying an overlap between the first set and the second set based at least on the information. The method further comprises selecting target resources for the sidelink transmission based at least on the first subset.