Sidelink PRS Resource Selection for Reliable Low-Latency V2X
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing increasing data traffic and latency requirements, particularly in sidelink communication for vehicle-to-everything (V2X) applications, where direct links between UEs are established without base station intervention, and there is a need for enhanced mobile broadband communication with improved reliability and reduced latency.
Innovation Solution
A method and device for performing wireless communication that involves obtaining information related to a positioning reference signal (PRS) configuration, receiving a preferred resource set, determining a resource set excluding non-preferred resources, and transmitting information related to the first resource, enabling effective sidelink PRS communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If direct link is established between UEs for sidelink communication, then base station overhead is reduced, but communication reliability and latency performance deteriorate
Solution Approach 1:
The patent introduces a resource set preference information mechanism as an intermediary to coordinate resource selection between UEs. By exchanging preference information and forming resource sets based on PRS reception quality, the system achieves reliable communication without requiring base station intervention, thus resolving the contradiction between reduced overhead and maintained reliability
2Loss of time
If resource allocation is optimized for sidelink communication, then communication latency is reduced, but resource management complexity increases
Solution Approach 1:
The patent implements self-service resource selection where UEs autonomously determine resource sets based on their own PRS reception quality measurements and preference information. Each UE independently forms resource sets and transmits preference information without requiring centralized coordination, thereby reducing latency while keeping management complexity at acceptable levels through distributed decision-making
Data Source
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AI summary
Proposed are a method by which a first device performs wireless communication, and a device for supporting same. For example, the first device may obtain information related to a PRS configuration. For example, the information related to the PRS configuration may include at least one of information on a start slot of a PRS resource and information on a start symbol of the PRS resource. For example, the first device may receive information on a first preferred resource set from a second device. For example, the first device may determine a first resource on the basis of a second resource set from among the first preferred resource set excluding a resource set not preferred by the first device. For example, the first device may transmit information related to the first resource to the second device. For example, the first device may receive a first SL PRS on the basis of the PRS configuration and the first resource.