Priority-Aware Sidelink Resource Assistance Under Limited Sensing
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Solution Overview
Problem
In current NR V2X systems, resource collisions occur due to the limited sensing range of terminal equipment, reducing reliability for services with higher reliability requirements, and there is no method to determine a resource set within assistance information or transmit it effectively.
Innovation Solution
A method where a second UE determines a second resource set based on the transmission priority of a first UE's sidelink data and transmits assistance information including time-frequency domain information to help the first UE select candidate resources, considering the priority of the first UE's data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If terminal equipment uses sensing to select time-frequency resources autonomously, then resource selection efficiency is improved, but resource collisions occur due to limited sensing range, reducing transmission reliability
Solution Approach 1:
The patent introduces assistance information as an intermediary mechanism. The first UE sends assistance information containing resource usage details to the second UE, which then uses this information to adjust its resource selection. This intermediary approach allows UEs to overcome sensing range limitations by sharing resource usage knowledge indirectly, reducing collisions while maintaining autonomous selection efficiency.
2Reliability
If enhanced mechanism transmits assistance information to reduce collision probability, then transmission reliability is improved, but device complexity increases due to additional information processing and transmission
Solution Approach 1:
The patent extracts only the essential resource usage information from the complex sensing process and packages it into assistance information. Instead of transmitting full sensing data, the system extracts key parameters (resource indices, usage status) that are sufficient for collision avoidance, thereby improving reliability while minimizing the added complexity of information processing and transmission.
3Reliability
If UE transmits assistance information to help peer UE select resources, then resource collision probability is reduced, but energy consumption increases due to additional transmission operations
Solution Approach 1:
The patent applies partial action by transmitting only the necessary assistance information required for resource selection, rather than all possible sensing data. The assistance information includes selectively extracted resource usage parameters, which provides sufficient collision avoidance capability while minimizing energy consumption compared to transmitting complete sensing results.
Data Source
AI summary
An information transmission method, a resource determination method and apparatuses thereof. The information transmission method includes: determining a second resource set by a second UE according to a first transmission priority; and transmitting assistance information by the second UE to a first UE, the assistance information including time frequency domain information of resources in the second resource set, and the second resource set being used by the first UE for determining a first candidate resource set for transmitting first sidelink data, wherein the first transmission priority is determined according to a priority of the first sidelink data transmitted by the first UE.