Sidelink Resource Selection via Beam Group Segmentation
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Solution Overview
Problem
The design of sensing and resource selection behavior for beam sweeping in NR sidelink-based V2X is still under discussion, particularly in addressing interference and optimizing resource utilization during transmission.
Innovation Solution
A user equipment (UE) is equipped with a receiver to receive transmissions from other UEs using multiple beams, circuitry to measure and select resources based on measurement results, and a transmitter to perform sidelink transmissions using the selected resources, while precluding candidate resources associated with beams that cause significant interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If beam sweeping is used for NR sidelink transmission, then coverage is improved, but interference increases and resource utilization deteriorates
Solution Approach 1:
The patent segments the beam set into multiple groups and performs sensing separately for each group. This allows the system to maintain beam sweeping for coverage while managing interference from different beam groups independently, thereby resolving the contradiction between coverage improvement and interference reduction
Solution Approach 2:
The patent applies different sensing and resource selection strategies to different beam groups based on their specific interference characteristics. By customizing the sensing approach for each beam group rather than applying a uniform method, the system optimizes resource utilization while maintaining coverage
2Area of stationary object
If beam sweeping is used for NR sidelink transmission, then coverage is improved, but resource utilization deteriorates
Solution Approach 1:
By dividing beams into multiple groups and performing separate sensing for each group, the system identifies and selects resources more efficiently within each group. This segmentation enables better resource utilization while maintaining the coverage benefits of beam sweeping
Solution Approach 2:
The patent performs sensing on a subset of beam groups rather than all beams simultaneously. This partial action approach reduces the computational overhead and resource preclusion while still maintaining adequate coverage through selective beam group monitoring
3Object-affected harmful factors
If candidate resources are precluded based on measurement results, then interference is reduced, but resource availability decreases
Solution Approach 1:
The patent segments interference management by applying preclusion rules separately to different beam groups. This allows resources to be precluded only when necessary for specific interfering beam groups, rather than broadly precluding resources across all beams, thus maintaining more available resources while still reducing interference
Solution Approach 2:
The system dynamically adjusts the preclusion decision based on measurement results and beam group characteristics. By changing the preclusion parameter selectively rather than uniformly, the system reduces interference while preserving more candidate resources for transmission
Data Source
AI summary
Provided are user equipment (UE) and communication methods. The UE includes: a receiver, operative to receive transmissions of a TB performed by another UE using each of a first set of beams respectively; circuitry, operative to perform measurement on the received transmissions, and to select resource for sidelink transmission among candidate resources based on a measurement result; and a transmitter, operative to perform the sidelink transmission with the selected resource, wherein, the circuitry is further operative to preclude, from the candidate resources, one or more candidate resources associated with a transmission using a beam of the first set of beams, if the measurement result of the transmission using the beam fulfills a predetermined condition.