Ambiguity-Triggered Map Message Sharing for Vehicle Navigation
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Solution Overview
Problem
Current driver assistance systems in vehicles struggle to clearly interpret complex traffic infrastructure structures and ambiguous driving situations, leading to insufficient decision-making in scenarios like road intersections and construction sites, where vehicle-to-X messages are insufficient.
Innovation Solution
A system that detects ambiguities in driving situations and outputs messages comprising map data or warning messages, allowing vehicles to supplement, verify, and save map data, particularly using a detection unit to identify ambiguous conditions like overpasses, bridges, and intersections, and sending MAP messages defined by the SAE J2735 standard or proprietary warnings based on predefined criteria.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If detailed map data is continuously transmitted to all vehicles, then the quality of digital maps is improved, but the data transfer volume and communication bandwidth increase significantly
Solution Approach 1:
The system transmits detailed map data selectively only to vehicles that need it (those experiencing ambiguous driving situations), rather than continuously to all vehicles. This localized transmission approach maintains high map data quality for vehicles that require it while minimizing unnecessary data transfer for vehicles that already have sufficient information.
Solution Approach 2:
The system proactively identifies ambiguous driving situations before they become critical problems. By detecting ambiguities in advance and transmitting map data preemptively, the system ensures vehicles receive necessary information before making driving decisions, improving reliability without requiring continuous data streams.
2Quantity of substance
If map data is transmitted only when needed, then data transfer efficiency is improved, but the timeliness of information availability may be compromised
Solution Approach 1:
The system continuously monitors driving situations and detects ambiguities in advance. When an ambiguous situation is detected, map data is transmitted immediately, ensuring the information is available at the critical moment while maintaining efficient data transfer by sending only when necessary.
Solution Approach 2:
The system uses feedback from real-time driving situation analysis to trigger map data transmission. By continuously monitoring vehicle position, road topology, and driving context, the system determines precisely when map data is needed and transmits it at that moment, optimizing both timing and efficiency.
3Device complexity
If vehicle-to-X messages are used without digital maps, then communication infrastructure is simplified, but the ability to interpret complex traffic infrastructure structures deteriorates
Solution Approach 1:
The system merges vehicle-to-X communication with digital map data, combining the advantages of both approaches. Vehicles exchange messages about driving situations and supplement this with detailed map data when ambiguities are detected, creating a hybrid system that maintains infrastructure simplicity while improving interpretation capability.
Solution Approach 2:
Digital map data acts as an intermediary that bridges the gap between simple vehicle-to-X messages and complex infrastructure interpretation. The map data provides the contextual framework that enables vehicles to correctly interpret messages about road structures, intersections, and traffic patterns without requiring complex communication protocols.
Data Source
AI summary
A system for creating a digital map for driver assistance systems of a vehicle, includes a communications unit for exchanging messages between vehicles. A position acquisition unit acquires the position of the individual vehicle. A map unit stores and processes a digital map. A detection unit detects ambiguities of a driving situation in relation to a position in the digital map. Upon detection of an ambiguity, a message including map data and/or a warning message is/are output.