V2X Sidelink Resource Sharing for Collision-Aware UE Coordination
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Solution Overview
Problem
Existing vehicle-to-everything (V2X) communications systems face challenges in efficiently allocating wireless communications resources, leading to potential collisions and inefficiencies in resource utilization among vehicles.
Innovation Solution
Implementing inter-user equipment (UE) coordination techniques for autonomous resource selection and sharing of sensing information among vehicles, allowing UEs to identify and coordinate on optimal communication resources for sidelink transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If vehicles communicate directly using device-to-device (D2D) communications over a D2D wireless link, then safety and collision prevention are improved, but wireless communications resource allocation becomes inefficient leading to potential collisions and resource utilization issues
Solution Approach 1:
The patent implements short-term sensing that allows vehicles to detect and identify communication resources reserved by other UEs in advance before actual transmissions occur. This preliminary detection of reserved resources enables vehicles to select non-conflicting resources proactively, preventing collisions before they happen while maintaining efficient resource utilization through coordinated resource selection based on sensed information
Solution Approach 2:
The patent establishes a feedback mechanism where vehicles transmit reservation signals that contain information about their intended future transmissions. Other UEs sense these reservation signals and use the information to adjust their own resource selections, creating a closed-loop system that continuously optimizes resource allocation based on network conditions and prevents collisions through iterative coordination
2Productivity
If short-term sensing is used to detect potential collisions by receiving reservation signals from other UEs, then resource allocation efficiency is improved, but system complexity increases due to coordination requirements
Solution Approach 1:
The patent enables each UE to autonomously perform sensing operations and independently select its own transmission resources based on the sensed reservation signals from other UEs. This self-service approach allows vehicles to make their own coordination decisions without requiring complex centralized control or intricate inter-UE negotiation protocols, thereby improving resource allocation efficiency while keeping individual device complexity manageable
Data Source
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AI summary
A method of wireless communication wireless communication by an identifier-receiving user equipment (UE) includes measuring a received signal power of multiple resource UEs. The method also includes receiving a set of identifiers from an identifier-transmitting UE. The method further includes identifying a resource used by at least one of the multiple resource UEs for a future transmission from the identifier-receiving UE based on the measured received signal power and the received set of identifiers. The method still further includes scheduling the future transmission on the at least one identified resource.