Intersection V2X Messaging for Vehicle Maneuver Planning
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Solution Overview
Problem
Current vehicle-to-everything (V2X) technologies lack efficient methods for determining and communicating vehicle capabilities and behaviors, such as autonomous driving status, stopping distance, and maneuverability, which are crucial for safe and optimized inter-vehicle spacing and lane change maneuvers.
Innovation Solution
The implementation of a method and apparatus in vehicles to receive and send data elements like identification, autonomous vehicle status, and braking distance data, allowing for the determination of target spaces and communication of vehicle capabilities through V2X messages, enabling vehicles to optimize spacing and maneuvers based on sensor data and external inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If V2X technologies are used to communicate vehicle capabilities and behaviors, then safety and efficiency of inter-vehicle spacing and lane change maneuvers are improved, but the complexity of data exchange and coordination between vehicles increases
Solution Approach 1:
The patent segments vehicle capabilities and behaviors into distinct data elements (DEs) such as autonomous vehicle status DE, braking distance DE, and maneuverability DE. Each DE is independently defined and communicated through V2X messages, allowing receiving vehicles to process specific capability information without being overwhelmed by the entire dataset. This segmentation reduces coordination complexity while maintaining comprehensive safety information exchange.
Solution Approach 2:
The patent establishes universal V2X message structures and standardized data element definitions that can be applied across different vehicle types and communication scenarios. These standardized DEs serve multiple functions: they communicate vehicle capabilities for spacing determination, lane change coordination, and maneuver planning. This universality simplifies the overall system complexity by providing a common framework rather than requiring custom solutions for each interaction scenario.
2Measurement precision
If comprehensive vehicle capability data is exchanged between vehicles, then the precision of target space determination and maneuver planning is improved, but the quantity of data transmitted and processed increases
Solution Approach 1:
The patent extracts only the essential capability information needed for safe maneuvering into specific data elements. Rather than transmitting complete vehicle operational data, the system identifies and extracts critical parameters such as autonomous vehicle status, braking distance, and maneuverability characteristics. These extracted DEs provide sufficient precision for target space determination while minimizing the overall data quantity transmitted through V2X communication.
Solution Approach 2:
The patent transforms complex vehicle capability information into standardized parameter-based data elements with defined structures and value ranges. By converting continuous capability measurements into discrete, standardized parameters (e.g., autonomous vehicle status as specific enumerated values), the system maintains measurement precision for maneuver planning while reducing data processing complexity and transmission requirements.
3Speed
If real-time vehicle capability communication is implemented, then the responsiveness of lane change and spacing adjustments is improved, but the energy consumption for continuous data transmission increases
Solution Approach 1:
The patent implements periodic V2X message transmission where vehicles exchange capability data elements at defined intervals rather than continuously. This periodic communication maintains real-time responsiveness for lane change and spacing adjustments by providing regular capability updates, while significantly reducing energy consumption compared to continuous transmission. The system can adjust transmission frequency based on maneuver context to balance responsiveness and energy efficiency.
Data Source
AI summary
Techniques are provided which may be implemented using various methods and/or apparatuses in a vehicle to utilize vehicle external sensor data, vehicle internal sensor data, vehicle capabilities and external V2X input to determine, send, receive and utilize V2X information and control data, sent between the vehicle and a road side unit (RSU) to determine intersection access and vehicle behavior when approaching the intersection.