UE-Coordinated Sidelink Resource Selection for Interference-Aware V2X
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Solution Overview
Problem
Existing sidelink resource selection methods in wireless communication systems, particularly in unlicensed radio bands, face challenges in achieving low latency and high reliability for vehicle-to-everything (V2X) applications due to inefficient resource allocation and interference management, especially in out-of-coverage scenarios.
Innovation Solution
Implementing user equipment (UE) coordination mechanisms for sidelink resource selection, where UEs exchange coordination information about preferred and non-preferred resources, adjusting RSRP thresholds, and applying weighting or grouping strategies to optimize resource selection, ensuring high reliability and low latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing sidelink resource selection methods are used in unlicensed radio bands, then device operation is possible, but reliability and latency performance are insufficient for V2X applications
Solution Approach 1:
The patent applies preliminary action by having UEs exchange coordination information in advance about their preferred and non-preferred resources before actual data transmission. This allows receiving UEs to pre-calculate and identify preferred resources, avoiding the need for repeated sensing and selection attempts, thereby reducing latency while maintaining high reliability through coordinated resource usage.
2Ease of operation
If traditional resource allocation methods are used, then resource selection is simple, but interference management is inefficient
Solution Approach 1:
The patent implements feedback mechanisms where UEs exchange coordination information containing preferred and non-preferred resource indications. This feedback loop allows each UE to adjust its resource selection based on the preferences and conditions of other UEs, enabling efficient interference management while maintaining relatively simple operation through standardized coordination message exchange.
3Productivity
If UEs independently select resources without coordination, then device complexity is low, but resource allocation efficiency is poor
Solution Approach 1:
The patent applies self-service by enabling UEs to autonomously generate and exchange coordination information about their preferred resources based on their own transmission conditions and preferences. Each UE independently determines its resource preferences and shares this information with others, allowing the system to achieve improved resource allocation efficiency without requiring complex centralized coordination or additional network infrastructure.
Data Source
AI summary
A method for selecting resources for a transmission between a first UE and a second UE is disclosed. A set of coordination resources is determined at the first UE. The set of coordination resources includes coordination information which may indicate whether the set of coordination resources are preferred resources and/or non-preferred resources. The set of coordination resources is sent to the second UE, and the second UE takes the coordination information into account in the resource selection for its own transmission. For example, the resource selection by the second UE may be based on both the sensing result of the second UE and the received coordination information from the first UE. Alternatively, there source selection by the second UE may be based exclusively or non-exclusively on the received coordination information from the first UE.