Inter-UE Coordination for Sidelink Resource Pools

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Solution Overview

Problem

Current wireless communication systems face challenges in efficiently coordinating resource usage among user equipment (UEs) in resource pools, particularly in selecting and transmitting preferred or non-preferred sidelink resources, which affects communication quality and interference management.

Innovation Solution

The method involves selecting an inter-UE coordination scheme from stored configuration information or received indications to determine preferred or non-preferred sidelink resources for transmission, allowing UEs to sense and transmit on these resources based on the scheme, thereby optimizing resource allocation and reducing interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If UEs autonomously select sidelink resources from resource pools without coordination, then resource selection flexibility is improved, but interference and resource conflicts increase

Engineering Contradiction:

Improveresource selection flexibilityVSAvoidinterference and resource conflicts

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent implements feedback mechanisms where UEs report channel state information, interference measurements, and resource usage status to the network. The network uses this feedback to coordinate resource allocation across multiple UEs, adjusting allocations based on observed interference patterns and resource utilization, thereby maintaining flexibility while reducing conflicts

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The network acts as an intermediary that receives resource selection preferences from multiple UEs, processes this information along with interference measurements, and coordinates resource allocations to minimize conflicts. This intermediary coordination layer enables UEs to maintain autonomous selection capability while avoiding the harmful effects of uncoordinated resource usage

Inventive Principle:

Principle #24Intermediary (Mediator)

2Measurement precision

If UEs transmit interference indication information frequently, then interference management accuracy is improved, but signaling overhead increases

Engineering Contradiction:

Improveinterference management accuracyVSAvoidsignaling overhead

Core Design Contradiction:

Measurement precisionVSLoss of information

Solution Approach 1:

The patent implements periodic interference measurement and reporting mechanisms where UEs transmit interference indication information at scheduled intervals rather than continuously. The reporting frequency is adapted based on channel conditions and interference levels, providing accurate interference management information while reducing signaling overhead during stable conditions

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system dynamically adjusts reporting parameters such as measurement windows, reporting thresholds, and feedback frequency based on current channel conditions and traffic patterns. When interference levels are low and stable, reporting frequency is reduced; when interference increases or conditions change rapidly, reporting frequency increases to maintain accuracy

Inventive Principle:

Principle #35Parameter changes

3Measurement precision

If multiple UEs sense the same sidelink resources independently, then resource sensing accuracy for individual UEs is improved, but overall resource allocation efficiency decreases

Engineering Contradiction:

Improveresource sensing accuracyVSAvoidresource allocation efficiency

Core Design Contradiction:

Measurement precisionVSProductivity

Solution Approach 1:

The patent combines sensing results from multiple UEs through network coordination, aggregating channel state information and resource availability data. This merged information provides a more complete picture of resource conditions than individual sensing alone, improving overall allocation efficiency while maintaining the sensing accuracy benefits for each UE

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The sensing mechanism is designed to serve multiple functions simultaneously: individual UEs perform sensing for their own resource selection, while the aggregated sensing data from multiple UEs provides network-wide resource awareness for coordinated allocation. This multi-functional sensing approach improves both individual accuracy and overall efficiency

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20220369288A1Inter user equipment coordination for resource pools

Publication Date: 2022.11.17 QUALCOMM INC

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may select, from stored configuration information or a received indication, an inter-UE coordination scheme that is configured for a resource pool associated with the first UE. The UE may transmit, to a second UE, an indication of one or more of preferred sidelink resources or non-preferred sidelink resources for transmission from the second UE to the first UE, based at least in part on the inter-UE coordination scheme. Numerous other aspects are described.