Sidelink Resource Coordination for Multi-RAT Coexistence

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Solution Overview

Problem

Current sidelink (SL) communication technologies face challenges in coexisting within the same frequency resource due to limited spectrum availability, leading to potential interference between different radio access technologies (RATs) and resource allocation modes.

Innovation Solution

A transmission method where user equipment (UE) determines and transmits to-be-transmitted information indicating resource selection by a management entity, allowing the entity to select resources for the UE based on conflict information and resource sets, thereby avoiding resource conflicts and enabling coexistence of SL communication with different RATs or resource allocation modes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If different RATs work on different carriers or channels, then interference between RATs is avoided, but spectrum resources are insufficient

Engineering Contradiction:

Improveinterference avoidanceVSAvoidspectrum resources

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The patent merges different RATs (NR and LTE) to operate on the same frequency resource by introducing a coexistence mechanism. The management entity coordinates resource allocation between NR SL and LTE SL, allowing both systems to share the same carrier while avoiding interference through controlled resource selection and conflict detection.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent makes the frequency resource universal by enabling it to serve multiple purposes - supporting both NR SL communication and LTE SL communication on the same carrier. The management entity acts as a universal coordinator that handles resource allocation for both RATs, making the spectrum resource multi-functional.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If user equipment autonomously selects SL transmission resources, then resource allocation flexibility is improved, but resource conflicts between different RATs occur

Engineering Contradiction:

Improveresource allocation flexibilityVSAvoidresource conflict

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent introduces a management entity as an intermediary between the NR SL and LTE SL systems. This intermediary receives resource selection information from both systems, detects potential conflicts, and coordinates resource allocation to avoid collisions. The management entity mediates the resource selection process to maintain flexibility while preventing conflicts.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent implements a feedback mechanism where the management entity receives resource selection information from user equipment, analyzes potential conflicts, and provides coordination decisions back to the systems. This feedback loop enables dynamic adjustment of resource allocation to prevent conflicts while maintaining allocation flexibility.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS20250184965A1Transmission method, user equipment, management entity, and storage medium

Publication Date: 2025.06.05 ZTE CORP

AI summary

Provided are a transmission method, a user equipment, a management entity, and a storage medium. The method includes the following: To-be-transmitted information is determined, where the to-be-transmitted information indicates that a management entity selects a resource for the user equipment; and the to-be-transmitted information is transmitted to the management entity.