SL-U Resource Selection Under COT Sharing Conflicts
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Solution Overview
Problem
In sidelink-unlicensed (SL-U) communication, the introduction of a channel occupancy time (COT) sharing mechanism complicates the determination of transmission resources, leading to potential failures in resource allocation and interference among user equipment (UEs).
Innovation Solution
A method and device for selecting transmission resources by user equipment (UE) that involves receiving COT sharing information, determining capability to share the COT, identifying an available resource set within a time domain, and selecting a resource from this set to avoid conflicts and ensure reliable data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If COT sharing mechanism is introduced in SL-U, then resource allocation flexibility is improved, but resource allocation reliability deteriorates due to potential conflicts and interference
Solution Approach 1:
The patent applies preliminary action by having the first UE determine capability to share COT before actually selecting transmission resources. The UE performs capability determination based on COT sharing information received from the second UE, and only proceeds with resource selection within the COT if capability is confirmed. This preliminary check prevents resource allocation conflicts and ensures reliable resource usage while maintaining the flexibility of COT sharing.
2Object-affected harmful factors
If resource exclusion is performed to determine candidate resource set, then interference is reduced, but resource selection complexity increases
Solution Approach 1:
The patent applies local quality by making the resource exclusion process adaptive to local conditions - specifically, whether the first UE has capability to share COT. If the UE has sharing capability, it excludes only resources that conflict with the COT. If it lacks sharing capability, it excludes all resources within the COT. This localized adaptation reduces unnecessary exclusion operations while maintaining interference avoidance, thereby reducing overall complexity.
3Speed
If UE selects resource without checking COT sharing capability, then resource selection speed is improved, but transmission reliability deteriorates due to potential COT sharing failure
Solution Approach 1:
The patent applies preliminary action by performing capability determination before resource selection. The first UE determines whether it is capable of sharing the COT indicated in the COT sharing information before proceeding with resource selection. This preliminary check ensures that only UEs with appropriate capability select resources within the COT, preventing COT sharing failures while maintaining efficient resource selection through the streamlined capability-based decision process.
Data Source
AI summary
A method and device for selecting a resource, the method including: a first UE receiving COT sharing information from a second UE; determining, based on the COT sharing information, whether the first UE is capable of sharing a COT indicated in the COT sharing information; determining, through resource aware, a candidate resource set within a resource selection window in a time domain, and determining an available resource set from the candidate resource set, in response to determining that the first UE is incapable of sharing the COT, and selecting the resource from the available resource set as a transmission resource of the first UE.