Sidelink Resource Selection via Inter-UE Coordination
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Solution Overview
Problem
Current mobile communication networks face challenges in efficiently managing and optimizing communication protocols across diverse wireless devices and base stations, particularly in supporting multiple technologies and releases, which affects network performance and resource allocation.
Innovation Solution
The implementation of advanced communication protocols and network architectures, such as New Radio (NR) user and control plane protocol stacks, along with bandwidth adaptation and carrier aggregation techniques, to enhance communication efficiency and adaptability across various wireless devices and base stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sidelink resource selection is performed without inter-UE coordination, then resource allocation is simpler and faster, but resource utilization efficiency deteriorates due to suboptimal selections
Solution Approach 1:
A coordinating UE acts as an intermediary between transmitting and receiving UEs, collecting resource selection information from multiple UEs and providing coordinated resource allocation recommendations. This mediator approach enables improved resource utilization efficiency while maintaining relatively simple and fast resource allocation through the coordination mechanism.
2Reliability
If inter-UE coordination is implemented for sidelink resource selection, then resource utilization efficiency is improved, but device complexity increases due to additional coordination procedures
Solution Approach 1:
UEs autonomously perform resource selection based on pre-configured parameters and local measurements, with optional coordination from other UEs. The self-service approach allows UEs to independently make resource decisions while maintaining the option to coordinate, thereby improving resource utilization efficiency without significantly increasing device complexity through mandatory complex coordination procedures.
3Adaptability or versatility
If multiple UEs perform autonomous resource selection, then device autonomy is maintained, but resource conflicts increase leading to poor resource utilization
Solution Approach 1:
UEs exchange resource selection information and receive feedback from coordinating UEs about resource availability and selection quality. This feedback mechanism enables UEs to maintain autonomy in resource selection while incorporating information from other UEs to avoid conflicts and improve overall resource utilization efficiency.
Data Source
AI summary
A method includes determining, by a first wireless device, whether to trigger a sidelink resource selection procedure to select a set of resources for one or more sidelink transmissions by a second wireless device based on a wireless device category of the first wireless device. The method further includes, in response to triggering the sidelink resource selection procedure, selecting the set of resources and transmitting a first message indicating the set of resources to the second wireless device.