V2X Vehicle Localization Using Shared Sensor Actions
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Solution Overview
Problem
Existing V2X communication systems face challenges in accurately determining the proximity of V2X-capable vehicles to each other, especially when non-networked or non-V2X-capable vehicles are present, which hinders reliable Road Train functions and traffic safety.
Innovation Solution
A method where a first V2X-capable vehicle sends a request to a second V2X-capable vehicle via a V2X communication link, receives and evaluates sensor data from the second vehicle, and performs actions to determine their relative position, allowing for localization without relying on GNSS, using sensor sharing and actions like light signals or movements to detect neighboring vehicles or obstacles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If GNSS-based localization is used to determine vehicle positions, then localization coverage is improved, but localization accuracy deteriorates due to unavailability in some areas and insufficient precision
Solution Approach 1:
The patent introduces sensor data (camera, LiDAR, radar) as an intermediary to enable vehicle localization. Instead of relying solely on GNSS signals, the system uses sensor data transmitted through V2X communication to detect actions of neighboring vehicles and determine relative positions, thereby achieving accurate localization in areas where GNSS is unavailable or insufficient.
Solution Approach 2:
The patent replaces the GNSS satellite-based positioning system with a sensor-based detection system. By substituting the mechanical/satellite system with optical (camera), electromagnetic (LiDAR, radar) sensors and V2X communication, the system achieves localization functionality without dependence on GNSS infrastructure.
2Measurement precision
If sensor data is shared between V2X-enabled vehicles to determine relative position, then localization accuracy is improved, but communication data volume increases
Solution Approach 1:
The patent extracts and transmits only the essential information needed for localization - specifically, sensor data that captures actions of the first vehicle from the perspective of the second vehicle. Instead of sharing all sensor data or continuous video streams, the system selectively transmits relevant frames or processed action information, reducing communication overhead while maintaining localization accuracy.
Solution Approach 2:
The system performs preliminary processing of sensor data to identify and extract only the necessary information for localization purposes. By pre-processing sensor data to detect actions (such as brake lights, turn signals, vehicle movements) before transmission, the system reduces the volume of data that needs to be communicated while ensuring all critical localization information is included.
3Reliability
If V2X communication link is used for vehicle-to-vehicle communication, then communication reliability is improved, but the ability to detect non-V2X-enabled vehicles deteriorates
Solution Approach 1:
The patent merges two communication approaches: V2X-enabled vehicles use direct V2X communication for reliable data exchange, while simultaneously using sensor data sharing to detect and identify non-V2X-enabled vehicles. By combining these methods, the system maintains high communication reliability among V2X vehicles while also achieving the ability to detect and respond to non-V2X vehicles through sensor-based observation.
Data Source
Figure 1~2
AI summary
The invention relates to a method for locating a V2X-capable second vehicle by a first V2X-capable vehicle, wherein a request is sent from the first vehicle to the second vehicle via a V2X communication link, sensor data is received by the first vehicle from at least one sensor of the second vehicle via the V2X-capable communication link and evaluated, at least one action is performed by the first vehicle, and the second vehicle is located relative to the first vehicle when the at least one action of the first vehicle is detected on the basis of the received sensor data of the at least one sensor of the second vehicle. The invention further discloses a system.