Sidelink Resource Selection Using Inter-UE Coordination and Sensing
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Solution Overview
Problem
Existing sidelink communication technologies lack effective mechanisms for efficient resource selection and coordination between user equipment (UEs), leading to potential resource conflicts and inefficiencies.
Innovation Solution
Implementing inter-UE coordination information and sensing mechanisms for sidelink resource selection, allowing UEs to determine resource usage based on observed criteria and indications from other UEs, thereby enhancing resource allocation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If autonomous resource selection is used in sidelink communication, then device complexity is reduced and ease of operation is improved, but resource conflicts increase and reliability deteriorates
Solution Approach 1:
The patent implements sensing mechanisms where UEs monitor the sidelink channel for resource usage by other devices and provide feedback information. This feedback loop allows autonomous selecting UEs to make informed resource decisions based on observed channel conditions, reducing conflicts while maintaining operational simplicity
Solution Approach 2:
The patent introduces coordination messages as intermediary communications between UEs. These messages carry resource selection information and coordination data that mediate resource allocation decisions, enabling autonomous devices to coordinate their resource usage without centralized control, thus improving reliability while preserving ease of operation
2Productivity
If inter-UE coordination information is exchanged, then resource allocation efficiency is improved and conflicts are reduced, but device complexity and loss of information increase
Solution Approach 1:
The patent extracts only the essential coordination information needed for resource selection from the complete channel state data. By selecting and transmitting only relevant parameters (such as resource usage indicators and coordination recommendations), the system improves resource allocation efficiency while reducing the complexity of information processing and minimizing information loss
3Productivity
If sensing mechanisms are implemented for resource selection, then resource allocation efficiency is improved, but use of energy and device complexity increase
Solution Approach 1:
The patent implements partial sensing where UEs monitor only specific time-frequency resources relevant to their intended transmissions rather than continuously monitoring all available resources. This selective sensing approach maintains resource allocation efficiency by focusing computational and energy resources on critical monitoring tasks, thereby reducing overall energy consumption while preserving the benefits of sensing-based resource selection
Data Source
AI summary
A first user equipment (UE) receives inter-UE coordination information from a second UE. The first UE transmits a sidelink transmission using resources selected based on at least one of the inter-UE coordination information or sensing at the first UE, wherein selection of the resources uses the at least one of the inter-UE coordination information or the sensing based on one or more of a criteria observed at the first UE or an indication from the second UE. The second UE transmits the inter-UE coordination information for sidelink communication. The second UE may transmit information indicating whether to use at least one of the inter-UE coordination information or sensing for sidelink resource selection.