Sidelink Resource Selection Around Guard Bands in Shared Spectrum

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Solution Overview

Problem

Existing sidelink communication systems in shared spectrum face challenges in efficiently selecting and utilizing resources, leading to interference and suboptimal performance due to the lack of effective resource allocation mechanisms.

Innovation Solution

Implementing a resource selection mechanism for sidelink communications that includes periodic and contiguous partial sensing, along with inter-UE coordination, to optimize resource allocation and minimize interference in shared spectrum.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If resource selection is performed without periodic and contiguous partial sensing, then device complexity is reduced, but interference increases and resource utilization deteriorates

Engineering Contradiction:

ImproveinterferenceVSAvoidsensing mechanism complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The sensing mechanism is segmented into periodic sensing and contiguous partial sensing operations. Periodic sensing occurs at predetermined intervals to monitor resource availability, while contiguous partial sensing focuses on specific resource subsets. This segmentation reduces overall complexity by breaking down the continuous sensing requirement into manageable discrete operations while maintaining effective interference avoidance.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system performs preliminary sensing operations before resource selection to identify available resources and predict potential interference. By conducting sensing in advance (periodic and contiguous partial sensing), the device prepares resource selection decisions based on prior information, reducing real-time complexity while improving interference management.

Inventive Principle:

Principle #10Preliminary action

2Productivity

If traditional resource allocation is used without inter-UE coordination, then device complexity is reduced, but resource utilization and performance deteriorate

Engineering Contradiction:

Improveresource utilizationVSAvoidcoordination mechanism complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

Inter-UE coordination introduces feedback mechanisms where user equipment shares sensing results and resource selection information with neighboring devices. This feedback enables coordinated resource allocation, improving overall resource utilization by preventing redundant selections and reducing interference, while the structured feedback protocol manages complexity through standardized information exchange.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent merges individual UE resource selection decisions with coordinated information from neighboring UEs. By combining local sensing data with feedback from inter-UE coordination, the system achieves improved resource utilization through collective intelligence, while the merging process is managed through standardized protocols that control complexity.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS12581461B2Resource selection for sidelink communications in shared spectrum

Publication Date: 2026.03.17 OFINNO LLC

AI summary

A first wireless device receives, from a base station, a message indicating a sidelink resource pool comprising a guard band. The first wireless device determines, from the sidelink resource pool, a candidate resource set for one or more sidelink transmissions, wherein the candidate resource set excludes a first candidate resource with a subchannel overlapping with the guard band. The first wireless device transmits, to a second wireless device and via at least one candidate resource of the candidate resource set, the one or more sidelink transmissions.