LTE V2X NR V2X Resource Coexistence via Sensing

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Solution Overview

Problem

The coexistence of LTE V2X and NR V2X devices within the same frequency resource leads to resource conflicts and interference, which existing technologies struggle to effectively manage.

Innovation Solution

A resource coexistence method and apparatus that determine an LTE V2X or NR V2X time-frequency resource to be used in a reporting manner or an autonomous manner, thereby avoiding resource conflicts and interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If LTE V2X and NR V2X devices share the same frequency resource, then spectrum utilization is improved, but resource conflict and interference occur

Engineering Contradiction:

Improvespectrum utilizationVSAvoidresource conflict and interference

Core Design Contradiction:

Quantity of substanceVSObject-affected harmful factors

Solution Approach 1:

The patent segments the time-frequency resource by introducing a sensing mechanism that divides resources into occupied and available slots. Each device performs sensing to identify occupied resources and selects from available resources, effectively segmenting the shared spectrum into exclusive time-frequency blocks for different devices, thus resolving resource conflicts while maintaining spectrum utilization efficiency

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements dynamic resource selection where devices can switch between different resource pools (first and second time-frequency resources) based on real-time sensing results. The resource allocation is not fixed but dynamically adjusted according to the sensing outcomes, allowing flexible adaptation to changing channel conditions and device requirements, thereby reducing interference

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If autonomous resource selection is used, then device flexibility is improved, but resource conflict increases

Engineering Contradiction:

Improvedevice flexibilityVSAvoidresource conflict

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a sensing mechanism that provides feedback information about occupied resources to autonomous devices. Devices perform sensing to detect which resources are already occupied and use this feedback to make informed selection decisions. This feedback loop enables autonomous devices to avoid conflicting resources while maintaining their flexibility in selecting from available options

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent implements preliminary sensing before resource selection, where devices perform sensing in advance to identify occupied resources and determine available resources. This preliminary action allows devices to prepare their resource selection decisions based on current channel conditions, avoiding conflicts before they occur while maintaining autonomous flexibility

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20250203642A1Resource coexistence method and apparatus

Publication Date: 2025.06.19 ZTE CORP

AI summary

Provided are a resource coexistence method and an apparatus. The resource coexistence method includes: determining, by a first node, an LTE V2X or NR V2X time-frequency resource to be used in a reporting manner or an autonomous manner. In this embodiment of the present disclosure, the first node determines the LTE V2X or NR V2X time-frequency resource to be used through the reporting manner or the autonomous manner, thereby avoiding a resource conflict or interference caused by the coexistence of LTE V2X and NR V2X resources.