Sidelink Resource Exclusion for Adjacent Channel Interference
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Solution Overview
Problem
In sidelink communication, transmission on resources adjacent to those reserved by other UEs can cause interference to a UE, degrading transmission quality, which existing resource allocation methods fail to adequately address.
Innovation Solution
A resource exclusion method that involves a terminal device determining, based on RSRP and a threshold list, whether to exclude resources adjacent to those indicated by other devices, using threshold lists tailored to individual device priorities and capabilities to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a UE selects resources based on SCI from other UEs without considering adjacent resources, then resource selection process is simple, but transmission quality is degraded due to interference from adjacent resource transmissions
Solution Approach 1:
The patent applies preliminary action by excluding adjacent resources in advance before resource selection. The UE identifies resources adjacent to those indicated by SCI from other UEs and excludes them from the candidate resource set before making the final resource selection. This proactive approach prevents potential interference from adjacent resource transmissions, thereby improving transmission quality without requiring complex real-time interference management during transmission.
2Object-affected harmful factors
If a UE excludes only resources indicated by SCI from other UEs, then resource exclusion process is simple, but interference from adjacent resources is not reduced
Solution Approach 1:
The patent applies local quality by differentiating the treatment of resources based on their relationship with SCI-indicated resources. Instead of uniformly treating all resources, the method specifically identifies and excludes only those resources that are adjacent to the SCI-indicated resources. This targeted approach focuses the exclusion process on the specific local area (adjacent resources) that causes interference, effectively reducing harmful factors while maintaining reasonable complexity.
Data Source
AI summary
This application relates to a resource exclusion method. A first terminal device receives first sidelink control information (SCI) from a second terminal device, where the first SCI indicates a first resource. The first terminal device determines, based on first reference signal received power (RSRP) and a first threshold list, whether to exclude a second resource from a candidate resource set. The first RSRP corresponds to the first SCI, and the second resource includes a resource that shares a time domain position as the first resource and is adjacent to the first resource in a frequency domain position. In this way, when resource exclusion is performed, both resources indicated by SCI of other terminal devices and resources adjacent to those indicated by the SCI of the other terminal devices can be excluded. This approach significantly reduces interference between the terminal devices and enhances information transmission quality.