V2X Sidelink Resource Selection With Reservation-Aware Sensing
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Solution Overview
Problem
In V2X communication, existing resource allocation methods fail to account for potential conflicts in resource selection between UEs due to the lack of consideration of resource reservation periods, leading to inefficiencies and potential collisions.
Innovation Solution
The proposed solution involves determining a resource reservation period for sidelink transmissions and adjusting the resource selection window based on this period to avoid conflicts by excluding resources that are already reserved by other UEs, using a sensing procedure to identify occupied resources and reserving further resources within the selection window accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE performs sensing procedure to identify occupied resources, then resource selection accuracy is improved, but resource selection conflicts still occur due to lack of resource reservation period consideration
Solution Approach 1:
The UE performs sensing procedure in advance to identify resources that will be occupied in the future based on resource reservation periods. By proactively detecting resources reserved by other UEs before making its own resource selection, the system prevents conflicts rather than reacting to them after they occur.
Solution Approach 2:
The sensing procedure provides feedback information about resource reservation periods from other UEs. This feedback is used to adjust the resource selection window and exclude resources that are likely to be occupied, creating a closed-loop system that continuously improves resource selection accuracy based on observed network conditions.
2Quantity of substance
If the resource selection window includes all available resources, then resource availability is improved, but resource selection conflicts increase
Solution Approach 1:
The resource selection window is dynamically adjusted based on local sensing results. Instead of uniformly excluding resources across the entire window, the UE selectively excludes only those resources identified as occupied during the sensing period, maintaining resource availability in unoccupied portions while avoiding conflicts in occupied portions.
Solution Approach 2:
The resource selection window parameters (time range, resource blocks) are dynamically modified based on sensing outcomes and resource reservation periods. The window is contracted or shifted to exclude identified occupied resources while maximizing the remaining available resources for selection.
Data Source
AI summary
Embodiments of the present disclosure relate to devices, methods, devices and computer readable storage media for resource selection in a Vehicle to Everything (V2X) communication. The method comprises determining, at a terminal device, a resource reservation period for at least one sidelink transmission; and in accordance with a determination, based on the resource reservation period, that a reference resource associated with the at least one sidelink transmission is subsequent to a sensing window, determining, from a resource selection window of the terminal device, at least one further reference resource to be reserved for the at least one sidelink transmission based on the resource reservation period. In this way, the conflict of resource selection can be avoided and therefore the performance of the sidelink transmission can be improved.