Inter-UE Coordination Probability Threshold for SPS Resource Collision
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Solution Overview
Problem
Current sidelink communication technologies in wireless systems face challenges in efficiently coordinating resource reservations among user equipment (UEs), leading to potential resource collisions and reduced reliability, especially in scenarios like vehicle-to-everything (V2X) communications.
Innovation Solution
A method where a UE determines whether to transmit inter-UE coordination information based on a probability threshold, configured considering channel busy ratio, channel occupancy, geographic position, resource collision ratio, and the frequency of inter-UE coordination transmissions, to balance redundancy reduction with improved coordination reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If inter-UE coordination information is transmitted for all SPS resources, then coordination reliability is improved, but signaling overhead and redundancy are increased
Solution Approach 1:
The patent applies partial action by transmitting inter-UE coordination information only for a subset of SPS resources rather than all resources. The UE determines whether to transmit coordination information based on evaluating conditions such as resource collision risk, channel busy ratio, and probability thresholds. This selective transmission approach reduces signaling overhead while maintaining coordination reliability for critical resources that are more likely to cause collisions.
2Quantity of substance
If inter-UE coordination information is not transmitted, then signaling overhead is reduced, but resource collision risk increases
Solution Approach 1:
The patent implements feedback mechanisms where UEs evaluate channel conditions, collision probabilities, and transmission history to dynamically determine whether to send coordination information. The probability threshold and channel busy ratio metrics provide feedback loops that enable UEs to adapt their transmission behavior based on real-time network conditions, reducing overhead when coordination is less critical while maintaining reliability when needed.
3Productivity
If probability threshold is set high, then false transmissions are reduced, but coordination reliability decreases
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the probability threshold and evaluation criteria based on current network conditions. The threshold is not fixed but adapts based on factors like channel busy ratio, resource collision ratio, and geographic position. This allows the system to optimize between transmission efficiency and coordination reliability by tuning parameters according to actual operating conditions rather than using a static threshold.
Data Source
AI summary
A first user equipment (UE) receives sidelink resource reservation information over sidelink from one or more UEs. The first UE transmits inter-UE coordination information in a sidelink transmission based on a probability threshold being met. A wireless device may receive one or more of a status of a UE, a capability of the UE, or a report. The wireless device may configure the UE with a probability threshold for transmission of inter-UE coordination information in a sidelink transmission.