Decentralized Vehicle Maneuver Coordination Under V2X Bandwidth Limits
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing decentralized vehicle coordination methods face challenges due to insufficient channel capacities in vehicle-to-X communication, which limits the efficient exchange of data required for effective coordination of driving maneuvers between vehicles.
Innovation Solution
The method involves determining abstract driving maneuvers, transmitting relevant information via vehicle-to-X interfaces, and reconstructing nominal trajectories to identify conflicts, allowing for adaptive adjustments while optimizing data exchange to conserve resources and channel capacities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If detailed trajectory and driving maneuver data are transmitted between vehicles, then coordination accuracy and conflict detection capability are improved, but channel capacity consumption increases beyond available resources
Solution Approach 1:
The patent segments the detailed trajectory data into essential coordination parameters (position, velocity, acceleration, and basic maneuver indicators) that can be transmitted with reduced bandwidth while still enabling accurate conflict detection and coordination decisions. This segmentation allows the system to maintain coordination accuracy without transmitting complete detailed trajectory datasets.
Solution Approach 2:
The patent extracts only the critical parameters needed for decentralized coordination from the full trajectory data set. By identifying and transmitting only the essential elements (spatial-temporal coordinates, velocity vectors, and maneuver type indicators), the system achieves effective coordination while minimizing data transmission volume to fit within available channel capacities.
2Reliability
If comprehensive driving maneuver information is exchanged between all vehicles, then cooperative coordination reliability is improved, but communication resource consumption exceeds channel capacity
Solution Approach 1:
The patent implements partial action by transmitting only the specific maneuver parameters that are sufficient for reliable coordination decisions, rather than exchanging complete comprehensive driving information. This selective transmission of essential parameters maintains coordination reliability while reducing communication resource consumption to within available channel capacities.
Solution Approach 2:
The patent changes the parameter representation from detailed continuous trajectory data to discrete maneuver parameters and spatial-temporal key points. This parameter transformation reduces the data volume required for reliable coordination while maintaining the essential information needed for conflict detection and cooperative decision-making.
Data Source
AI summary
A method and corresponding device for the decentralized cooperative coordination of at least two vehicles includes: determining an abstract driving maneuver to realize at least one nominal driving maneuver by a first vehicle, determining driving maneuver information regarding the first vehicle's at least one abstract driving maneuver, transmitting the first vehicle's driving maneuver information to at least one further vehicle, calculating or reconstructing the first vehicle's nominal trajectory and/or nominal driving maneuver based on the received driving maneuver information by the further vehicle, comparing the first vehicle's reconstructed nominal trajectory and/or the reconstructed nominal driving maneuver with the further vehicle's nominal trajectory and/or nominal driving maneuver and, if a conflict exists between the nominal trajectory and/or the nominal driving maneuver of the first vehicle and the nominal trajectory and/or the nominal driving maneuver of the further vehicle, transmitting a cooperation request and/or information indicating the conflict to the first vehicle.