Sidelink Resource Selection Using Assistance Information
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Solution Overview
Problem
The reliability of sidelink transmission in wireless communication systems is low due to hardware constraints and scenario limitations, particularly in resource selection mode 2, where inaccuracy in resource sensing and randomness of resource selection lead to conflicts and reduced reliability.
Innovation Solution
A resource selection method that involves a transmit user equipment (TX UE) obtaining assistance information from another node to determine a candidate resource set and perform resource selection, including obtaining or creating a sidelink grant based on this information to enhance resource selection reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If resource sensing and random selection are used in sidelink transmission, then device complexity is reduced, but reliability deteriorates due to conflicts and inaccuracy
Solution Approach 1:
The receiving UE performs resource sensing and determines an assistance resource set in advance before transmission, then provides this information to the transmitting UE. This preliminary action allows the transmitting UE to select resources with higher reliability without performing complex sensing itself, resolving the contradiction between reduced complexity and improved reliability.
2Reliability
If assistance information from multiple nodes is collected, then reliability improves, but device complexity increases due to processing requirements
Solution Approach 1:
The transmitting UE autonomously processes the assistance information received from multiple nodes by determining an assistance resource set based on this information. The UE performs self-service in resource selection without requiring complex network coordination, improving reliability while keeping processing complexity manageable through autonomous decision-making.
3Device complexity
If traditional resource sensing is used, then device complexity is low, but measurement precision deteriorates leading to resource conflicts
Solution Approach 1:
The receiving UE acts as an intermediary that performs resource sensing and provides assistance information to the transmitting UE. This intermediary approach allows the transmitting UE to benefit from precise sensing results without implementing complex sensing mechanisms itself, resolving the contradiction between low complexity and high measurement precision.
Data Source
AI summary
A resource selection method and apparatus, and an electronic device are provided. The resource selection method includes: obtaining, by a transmit user equipment, assistance information of another node, where performing, by the transmit user equipment, resource selection based on at least the assistance information includes any one of the following: determining, by the transmit user equipment, a candidate resource set based on a resource sensing result and/or the assistance information, and performing resource selection based on the candidate resource set and/or the assistance information; obtaining or creating, by the transmit user equipment, at least one sidelink grant based on the assistance information, where the sidelink grant includes one or a group of sidelink transmission resources; and performing, by the transmit user equipment, resource selection based on at least one piece of the assistance information.