V2X Vehicle Localization Using Shared Sensor Data Without GNSS
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Solution Overview
Problem
Existing V2X communication methods rely on GNSS localization, which is not comprehensively available and lacks accuracy, making it difficult to reliably determine the positions of V2X-capable vehicles and identify non-V2X-capable vehicles between them.
Innovation Solution
A method and system where a first V2X-capable vehicle transmits a request to a second V2X-capable vehicle via a V2X communication connection, receives and evaluates sensor data from the second vehicle, and performs an action detectable by the second vehicle's sensors to determine their relative positions, without relying on GNSS.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If GNSS-based localization is used to determine vehicle positions, then the system can provide location information, but the accuracy is inadequate and availability is not comprehensive
Solution Approach 1:
The patent introduces sensor data (camera, radar, lidar, ultrasonic sensors) as an intermediary to determine vehicle positions and relative locations. Instead of relying solely on GNSS satellites, the system uses sensors mounted on vehicles to capture images and data of surrounding environment, which are then processed to determine precise relative positions and detect obstacles between vehicles.
Solution Approach 2:
The patent replaces the satellite-based electromagnetic positioning system (GNSS) with a local sensor-based detection system. Vehicles use cameras, radar, lidar, and ultrasonic sensors to actively measure and determine their relative positions and detect obstacles, substituting the passive satellite signal reception with active local environmental sensing and processing.
2Adaptability or versatility
If V2X communication is used to enable road train function, then vehicles can exchange data, but non-V2X-capable vehicles between them cannot be detected
Solution Approach 1:
The patent segments the detection function by having each vehicle independently capture sensor data of its surrounding environment and transmit this data via V2X communication to other vehicles. This allows the system to collectively monitor the entire road train, including non-V2X-capable vehicles, by combining segmented sensor data from multiple vehicles rather than relying on a single centralized detection system.
3Measurement precision
If sensor data from second vehicle is used to locate first vehicle, then relative position can be determined without GNSS, but the method requires V2X communication connection
Solution Approach 1:
The patent merges the sensing capabilities of multiple vehicles by having the second vehicle's sensors detect the first vehicle and transmit this sensor data via V2X communication to the first vehicle. This combining of sensing and communication resources from different vehicles enables precise relative position determination without GNSS, as the system integrates sensor data collection, V2X data transmission, and position calculation across multiple vehicle units.
Data Source
AI summary
A method of locating a second V2X-capable vehicle by a first V2X-capable vehicle is described. A request is transmitted from the first vehicle to the second vehicle via a V2X communication connection, sensor data from at least one sensor of the second vehicle are received by the first vehicle via the V2X communication connection and are evaluated. At least one action is carried out by the first vehicle, the second vehicle is located relative to the first vehicle if the at least one action by the first vehicle is detected on the basis of the received sensor data from the at least one sensor of the second vehicle. A system is also described.