Sidelink Resource Exclusion for Adjacent-Channel Interference
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Solution Overview
Problem
In sidelink communication, existing resource allocation modes fail to effectively mitigate interference from adjacent resources to a UE, degrading transmission quality beyond the interference from resources reserved by other UEs.
Innovation Solution
A resource exclusion method that determines, based on RSRP and threshold lists, to exclude resources adjacent to those indicated by other UEs' SCI, using threshold lists tailored to individual UE capabilities and QoS, reducing interference through targeted resource exclusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If resource exclusion is performed only for resources indicated by SCI of other terminal devices, then the device complexity is reduced, but transmission quality is degraded due to interference from adjacent resources
Solution Approach 1:
The patent segments the resource exclusion process into two distinct parts: (1) excluding resources directly indicated by SCI of other terminal devices, and (2) excluding resources adjacent to those indicated resources. This segmentation allows the system to address both direct and indirect interference sources separately, improving transmission quality while maintaining manageable complexity through structured processing steps.
Solution Approach 2:
The patent applies preliminary action by excluding adjacent resources in advance before actual transmission occurs. By identifying and excluding resources that are adjacent to those indicated by other terminal devices' SCI, the system proactively prevents potential interference from affecting transmission quality, rather than reacting to interference after it occurs.
2Object-affected harmful factors
If resources adjacent to those indicated by SCI are excluded, then interference between terminal devices is reduced, but the quantity of available resources decreases
Solution Approach 1:
The patent applies local quality by selectively excluding only those resources that are adjacent to resources indicated by SCI of other terminal devices, rather than excluding all resources uniformly. This targeted approach ensures that resources are excluded only where interference is likely to occur, minimizing the impact on the overall quantity of available resources while effectively reducing interference in critical areas.
3Reliability
If a single threshold is used for resource exclusion, then the ease of operation is improved, but transmission quality is insufficiently optimized for different interference scenarios
Solution Approach 1:
The patent implements dynamics by introducing multiple thresholds that can be dynamically selected based on different interference scenarios and service requirements. Instead of using a fixed single threshold, the system allows for threshold adjustment according to the specific situation, enabling optimal transmission quality while maintaining reasonable operational complexity through structured threshold selection mechanisms.
Data Source
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AI summary
This application relates to a resource exclusion method and an apparatus. A first terminal device receives first SCI from a second terminal device, where the first SCI indicates a first resource. The first terminal device determines, based on first RSRP and a first threshold list, whether to exclude a second resource from a candidate resource set, where the first RSRP is RSRP corresponding to the first SCI, and the second resource includes a resource that shares a same time domain position as that the first resource and is adjacent to the first resource in a frequency domain position. This is equivalent to that 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.