Carrier Aggregation Resource Reselection for Sidelink Accuracy
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Solution Overview
Problem
In carrier aggregation scenarios, existing resource selection methods in Sidelink (SL) communication face inaccuracies in resource exclusion, leading to inefficient resource utilization and reduced accuracy in resource selection by terminal devices.
Innovation Solution
The proposed solution involves evaluating and selecting target resources in a storage medium, including a method and apparatus, where the selected resource on the current carrier is evaluated based on the latest selected or scheduled resource on another carrier, triggering resource reselection if the current resource cannot be used for transmission, thereby improving resource selection accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If terminal devices perform initial resource selection in carrier aggregation scenarios, then resource allocation is established, but resource exclusion inaccuracies occur leading to suboptimal resource utilization
Solution Approach 1:
The patent performs resource re-evaluation at a second time instant that is earlier than the first time instant when the resource was initially selected. This preliminary re-evaluation checks whether the selected resource on the first carrier conflicts with newly selected or scheduled resources on the second carrier before actual transmission occurs, allowing for proactive resource reselection if conflicts are detected
Solution Approach 2:
The patent implements a feedback mechanism where the terminal device continuously monitors resource selection status across multiple carriers. The re-evaluation process provides feedback about resource conflicts, triggering resource reselection when the selected resource on the first carrier overlaps with resources selected or scheduled on the second carrier, thereby improving overall resource allocation accuracy
2Ease of operation
If terminal devices select resources independently on each carrier, then resource selection simplicity is maintained, but resource conflicts between carriers occur
Solution Approach 1:
The patent merges the resource selection processes of multiple carriers by performing re-evaluation that considers resources on both the first and second carriers simultaneously. The terminal device checks for conflicts between selected resources on the first carrier and selected or scheduled resources on the second carrier, combining the resource management of multiple carriers into a unified evaluation process that prevents conflicts while maintaining operational simplicity
Data Source
AI summary
The present disclosure relates to communication technology, and discloses a resource selection method and apparatus in a carrier aggregation scenario, a device, and a storage medium. The method includes: evaluating target resources in a target resource set at a second time instant according to a selected resource or scheduled resource on a second carrier. The target resource set includes a selected resource on a first carrier as indicated at a first time instant, and the second time instant is earlier than the first time instant. According to the present disclosure, the selected resource on the current carrier is evaluated according to the latest selected resource or scheduled resource on another carrier, at least before transmission on the selected resource of the current carrier. If the currently selected resource cannot be used for transmission, resource reselection can be triggered.