NR V2X Sidelink Partial Sensing for Low-Collision Resource Selection
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Solution Overview
Problem
In sidelink communication, the ambiguity surrounding the conditions under which a UE should perform partial sensing for power saving, when both random resource selection and partial sensing are allowed, leads to potential transmission resource collisions.
Innovation Solution
A UE performs partial sensing for transmission packets above a threshold, allowing for reduced probability of transmission resource collisions by defining conditions for when to engage in partial sensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a UE performs partial sensing operation to save power, then power consumption is reduced, but transmission resource collisions may increase due to ambiguous conditions for when partial sensing should be performed
Solution Approach 1:
The patent applies parameter changes by introducing a packet size threshold parameter to determine when partial sensing should be performed. The UE compares the packet size against this threshold parameter to decide between partial sensing and random resource selection, thereby dynamically adjusting the sensing behavior based on traffic characteristics to balance power consumption and collision probability.
2Adaptability or versatility
If both random resource selection and resource selection based on partial sensing are allowed to a UE, then resource allocation flexibility is improved, but ambiguity arises regarding under what conditions partial sensing should be performed
Solution Approach 1:
The patent resolves the ambiguity by establishing a clear parameter-based decision rule: when the packet size exceeds a threshold, the UE performs partial sensing; when it does not exceed the threshold, the UE uses random resource selection. This parameter change approach provides deterministic guidance that maintains flexibility while eliminating confusion about when to apply each method.
Data Source
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AI summary
An embodiment proposes a method for performing wireless communication by a first device. The method may comprise a step of determining at least one candidate slot for selection of a first sidelink (SL) resource, performing first sensing relating to at least one slot related to the at least one candidate slot, selecting at least one first SL resource on the basis of the first sensing, and transmitting first data on the basis of the at least one first SL resource. For example, random selection of an SL resource and selecting the SL resource by the first sensing may be allowed for a resource pool relating to the first SL resource. For example, a priority value of the first data may be smaller than or equal to a preconfigured threshold value.