Vehicle Level Communication with Discrete Elevation Signaling
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Solution Overview
Problem
In vehicle-to-everything (V2X) communication, the lack of elevation data in exchanged information leads to vehicles incorrectly determining the level of other vehicles, causing misoperations and safety risks in multi-level road scenarios like viaducts and overpasses.
Innovation Solution
A vehicle-mounted device generates and sends first-level information indicating the height level of the vehicle, allowing other vehicles to predict potential dangers and avoid collisions by using this height data as a reference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If elevation data is not included in V2X communication to comply with security regulations, then map content confidentiality is protected, but vehicles cannot accurately determine the height level of other vehicles in multi-level road scenarios
Solution Approach 1:
The patent introduces an intermediary encoding scheme that transforms elevation data into level information. Instead of directly transmitting sensitive elevation coordinates, the system encodes the elevation into discrete level values (e.g., level 1, level 2, level 3) that represent height zones. This intermediary representation maintains the essential safety information needed for multi-level road communication while protecting the confidentiality of precise map elevation data.
Solution Approach 2:
The patent changes the parameter representation from precise elevation coordinates (continuous data) to discrete level indicators (categorical data). By transforming the elevation parameter from its original confidential form into a simplified level classification, the system preserves the functional need for height level determination while complying with security requirements that prohibit direct transmission of detailed map elevation information.
2Ease of operation
If vehicles exchange only longitude and latitude information without elevation data, then communication simplicity is maintained, but misoperations occur in multi-level road scenarios like viaducts and overpasses
Solution Approach 1:
The patent segments the continuous elevation space into discrete level zones (e.g., ground level, viaduct level, overpass level). By dividing the elevation dimension into separate hierarchical levels, the system adds minimal information to the existing longitude and latitude exchange while enabling accurate determination of whether vehicles are on the same horizontal plane. This segmentation approach maintains communication simplicity by adding only a small level identifier rather than full elevation data.
Solution Approach 2:
The patent adds a new dimensional parameter (level) to the existing two-dimensional position information (longitude and latitude). By introducing this third dimension in a simplified discrete form, the system enables vehicles to determine their vertical relationship without complicating the communication protocol. The level dimension provides the necessary information for safe multi-level road operation while keeping the data exchange concise.
3Reliability
If strict confidentiality requirements are enforced on map content, then elevation data security is maintained, but vehicles lack necessary height information for safe navigation in multi-level environments
Solution Approach 1:
The patent transforms the elevation parameter from its original confidential continuous form into a discrete classified representation. By changing the parameter's form from precise coordinates to level categories, the system makes elevation information available for safety-critical decisions while maintaining the confidentiality of the underlying map data. This parameter transformation enables versatile adaptation to multi-level road scenarios without compromising security.
Solution Approach 2:
The patent applies different quality levels of elevation information to different operational needs. Instead of uniformly restricting all elevation data, the system provides sufficient local quality information (level indicators) where needed for safety decisions, while keeping the detailed confidential map data protected. This localized information provision ensures adaptability for collision avoidance in multi-level scenarios without undermining overall data confidentiality.
Data Source
AI summary
The present disclosure relates to vehicle-mounted devices and communication method. One example vehicle-mounted device in a first vehicle may obtain first position information, where the first position information indicates a position of the first vehicle. The vehicle-mounted device generates first-level information based on the first position information, where the first-level information indicates a first height level to which the position of the first vehicle belongs or a first height level to which a future driving track of the first vehicle belongs, and sends the first-level information.