V2X Sidelink Inter-UE Feedback for Peer Collision Avoidance
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Solution Overview
Problem
The increasing complexity and diversity of next-generation wireless communication systems, including 5G and 6G networks, pose challenges in managing network resources efficiently, particularly in vehicle-to-everything (V2X) sidelink communications, due to the diverse types of devices and data bandwidth requirements, leading to issues such as device collisions and resource allocation inefficiencies.
Innovation Solution
Implementing inter-UE coordination feedback mechanisms to enhance sidelink resource allocation in V2X communications, allowing UEs to coordinate resource selection and avoid collisions through feedback loops and alignment procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If inter-UE coordination feedback mechanisms are implemented to enhance resource allocation efficiency, then resource allocation efficiency is improved, but device complexity increases
Solution Approach 1:
The patent implements inter-UE coordination feedback mechanisms where UEs transmit feedback information about resource usage and collision experiences to coordinating UEs. This feedback loop enables resource selection optimization by allowing transmitting UEs to adjust their resource choices based on received feedback, thereby improving resource allocation efficiency while managing complexity through structured feedback protocols
Solution Approach 2:
The patent employs sensing procedures and resource exclusion lists that are established in advance before actual communication occurs. By pre-identifying potential collision resources and excluding them from candidate sets, the system proactively prevents collisions rather than reacting to them, improving resource allocation efficiency through preliminary coordination actions
2Reliability
If feedback transmission is performed to enable inter-UE coordination, then collision avoidance capability is improved, but loss of time increases
Solution Approach 1:
The patent implements periodic feedback transmission opportunities where UEs transmit coordination feedback at scheduled intervals rather than continuously. This periodic approach, combined with the feedback timing mechanisms that allow feedback to be sent before resource selection is finalised, maintains collision avoidance capability while minimising time loss through efficient timing of feedback exchanges
3Reliability
If resource selection is optimized using inter-UE coordination, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent segments the resource selection process into distinct phases: initial resource pool identification, sensing and collision detection, feedback reception, and final resource selection. This segmentation allows complex reliability optimization to be broken down into manageable steps, each handled by specific UE functions, thereby improving reliability while controlling processing complexity through structured decision-making frameworks
Data Source
AI summary
An apparatus and system for new radio (NR) vehicle-to-everything (V2X) sidelink communications are described. UE procedures for transmission of standalone and non-standalone inter-UE coordination feedback and content, as well as for resource selection with the inter-UE coordination feedback are described. The content and container of the inter-UE coordination feedback are provided, in addition to the ordering of resource selection processes carrying the inter-UE coordination feedback and transmission priority and conditions of the inter-UE coordination feedback. The inter-UE coordination feedback request, initial pre-processing of the inter-UE coordination feedback, assisting UE selection, and resource selection are presented.