CV2x Autonomous Resource Selection Latency Optimization
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Solution Overview
Problem
Current vehicle-to-everything (V2X) communication systems face challenges in balancing low latency requirements with system performance, particularly in congested scenarios, where existing resource allocation methods may lead to increased latency and potential collisions due to inefficient resource selection.
Innovation Solution
The method involves monitoring communication resources, determining candidate resources within a time window based on desired latency and congestion parameters, selecting the lowest energy resources, and transmitting data on the chosen low energy resource to minimize latency and avoid collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If existing resource allocation methods are used in congested scenarios, then system performance is maintained, but latency increases and collision probability increases
Solution Approach 1:
The patent applies preliminary action by performing channel sensing and resource selection in advance before actual data transmission. The UE monitors communication resources, determines candidate resources, and selects the best resource within a predetermined time window, ensuring that low-latency transmissions are ready to send immediately when the opportunity arises, thus reducing overall latency while avoiding collisions through pre-screening.
Solution Approach 2:
The patent implements dynamics by making the resource selection process adaptive and time-critical. The system dynamically adjusts the time window for resource selection based on latency requirements, and continuously monitors channel conditions to select from candidate resources. This dynamic approach allows the system to respond to changing channel conditions in real-time, balancing latency reduction with collision avoidance in congested scenarios.
2Reliability
If resource selection time window is extended to find better resources, then resource quality improves, but latency increases
Solution Approach 1:
The patent applies partial action by selecting from a subset of candidate resources rather than exhaustively evaluating all possible resources. The UE determines a set of candidate resources within a constrained time window and selects the best available option from this subset. This partial evaluation approach achieves sufficient resource quality without the excessive time cost of comprehensive resource assessment, thus balancing reliability with latency requirements.
3Productivity
If autonomous resource selection is used, then system efficiency improves, but collision probability increases in congested scenarios
Solution Approach 1:
The patent implements feedback by continuously monitoring communication resources and channel conditions before making resource selection decisions. The UE senses the channel, identifies candidate resources based on current conditions, and selects resources that are less likely to cause collisions. This feedback-driven approach maintains autonomous resource selection efficiency while reducing collision probability through informed decision-making based on real-time channel state information.
Data Source
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AI summary
Low latency enhancements for communication systems, including autonomous driving and/or selection scenarios, are provided. A method for communication includes monitoring communication resources in a communication system, determining a set of candidate resources to use for subsequent transmission of information within a time window such that the time window is minimized based on a desired communication latency parameter that considers at least one or more of communication channel congestion and a priority of transmission, determining a set of lowest energy resources from the set of candidate resources, selecting a low energy resource from the set of lowest energy resources, and transmitting data on the selected low energy resource. Other aspects, embodiments, and features are also claimed and described.