Sidelink Resource Selection Using Dual Signal Quality Thresholds
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in sidelink resource selection due to limited information about resource availability and reliability, leading to suboptimal selection and increased power consumption during channel sensing procedures.
Innovation Solution
The implementation of a method where user equipment (UE) receives configuration signaling based on multiple signal quality thresholds to determine resource availability and reliability, enabling the UE to indicate and select resources more efficiently by distinguishing between available and reliable resources for sidelink communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE performs detailed channel sensing to identify occupied resources, then resource selection accuracy is improved, but power consumption increases
Solution Approach 1:
The patent segments the sensing process into two distinct phases: a first sensing procedure that identifies occupied resources using a first threshold, and a second sensing procedure that determines reliability of availability using a second threshold. This segmentation allows the UE to perform basic occupancy detection first (lower power) and only perform additional reliability checking when necessary, thus reducing overall power consumption while maintaining selection accuracy.
Solution Approach 2:
The patent applies partial action by performing the second sensing procedure (reliability determination) only for resources that were initially identified as available in the first sensing procedure, rather than performing complete sensing on all resources. This partial sensing approach reduces the total measurement workload and power consumption while still achieving sufficient selection accuracy for the final resource pool.
2Reliability
If the UE uses multiple signal quality thresholds to determine resource availability and reliability, then resource selection reliability is improved, but device complexity increases
Solution Approach 1:
The patent divides the sensing procedure into two sequential stages with distinct thresholds: first sensing using a first threshold to identify occupied resources, and second sensing using a second threshold to assess reliability of availability. This segmentation simplifies the overall complexity by breaking down the complex multi-threshold problem into manageable sequential steps, where each stage has a clear, specific objective.
Solution Approach 2:
The patent implements dynamic threshold selection where the sensing threshold adapts based on the sensing stage and resource conditions. The first threshold is used for initial occupancy detection, and the second threshold is applied subsequently for reliability assessment. This dynamic approach allows the system to maintain high reliability while managing complexity through context-dependent threshold application rather than static complex algorithms.
3Loss of information
If the UE performs sensing on all resources in the resource pool, then resource availability information completeness is improved, but processing time increases
Solution Approach 1:
The patent extracts and prioritizes the most critical sensing operations by first identifying occupied resources through the first sensing procedure. By extracting this essential information first, the system can then selectively apply the second sensing procedure only to the subset of resources that appear available, rather than performing exhaustive sensing on the entire resource pool. This extraction approach maintains information completeness for decision-making while significantly reducing total processing time.
Solution Approach 2:
The patent performs preliminary sensing action using the first threshold to quickly identify occupied resources before conducting the more time-consuming second sensing procedure. This preliminary action filters out obviously unavailable resources, allowing the system to focus subsequent sensing efforts only on potentially available resources, thereby maintaining comprehensive availability information while minimizing overall sensing time.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive control signaling indicating a configuration for identifying availability and reliability of the availability for resources of a sidelink resource pool based on a plurality of signal quality thresholds. The UE may indicate, for each resource of a set of resources of the sidelink resource pool and based on the configuration, an indication of availability with respect to a first signal quality threshold and an indication of reliability of the availability with respect to a second signal quality threshold. The UE may select one or more resources of the sidelink resource pool based on the indication of availability and the indication of reliability of the availability for reach resource of the set of resources.