Vehicle Maneuver Messaging for V2X Spacing and Priority Decisions
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Solution Overview
Problem
Existing vehicle-to-everything (V2X) communication standards lack definitions for essential data elements such as autonomous vehicle status, braking distance, and maneuverability, hindering optimal inter-vehicle spacing and maneuver planning.
Innovation Solution
Implementing methods and apparatuses in vehicles to determine and communicate V2X data elements like autonomous status, braking distance, and maneuverability using internal and external sensors, combined with external inputs, to facilitate safe and efficient vehicle maneuvers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If V2X communication standards include definitions for essential data elements like autonomous vehicle status, braking distance, and maneuverability, then inter-vehicle spacing and maneuver planning are optimized, but communication protocol complexity increases
Solution Approach 1:
The patent segments the communication protocol into modular data elements (DEs), where each DE represents a specific capability or parameter (e.g., autonomous status, braking distance). This segmentation allows standards bodies to define and update individual elements without overhauling the entire protocol, optimizing maneuver planning while managing complexity through structured modularity.
Solution Approach 2:
The patent creates a universal set of data elements that can be used across multiple V2X communication scenarios and applications. These standardized DEs serve multiple functions including safety assessments, maneuver coordination, and capability exchange, thereby optimizing overall system efficiency without proportionally increasing protocol complexity.
2Reliability
If vehicles dynamically update and share critical data elements like braking distance and autonomous status, then safety and efficiency are enhanced, but data transmission frequency and communication load increase
Solution Approach 1:
The patent implements dynamic data element updates where vehicles transmit capability information in real-time or near-real-time based on changing conditions. The system adapts transmission frequency and content based on operational context, enhancing safety through timely information exchange while managing communication load through conditional updates rather than continuous transmission.
Solution Approach 2:
The patent establishes feedback mechanisms where received capability information influences subsequent maneuver decisions and communication behavior. Vehicles adjust their data transmission based on the information needs of surrounding vehicles and the current traffic situation, optimizing the balance between safety enhancement and communication resource consumption.
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 CV2X input to determine, send, receive and utilize data elements to determine inter-vehicle spacing, intersection priority, lane change behavior and spacing and other autonomous vehicle behavior.