Trajectory Coordination via Dual-Channel Communication
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Solution Overview
Problem
Current vehicle-to-X communication systems face long latencies and unreliable connection quality, particularly in urban areas, which can lead to safety-critical traffic situations due to insufficient coordination between vehicles during maneuvers.
Innovation Solution
A processing apparatus external to the vehicle evaluates planned trajectories of vehicles using both mobile radio networks and direct communication channels, providing a point-to-point mobile radio connection (e.g., LTE 4G, 5G) to alert vehicles of potential safety-critical situations, ensuring timely coordination and reducing resource consumption by only forwarding information when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If direct vehicle-to-X communication is used for maneuver coordination, then latency is reduced and connection quality is improved, but communication coverage is limited and safety-critical situations cannot be prevented in all cases
Solution Approach 1:
The patent introduces an intermediary server that receives trajectory information from multiple vehicles via mobile radio networks, evaluates potential safety-critical situations, and forwards relevant trajectory data directly to specific vehicles using direct vehicle-to-X communication. This mediator architecture combines the wide coverage of mobile radio with the low latency of direct communication, resolving the contradiction between communication coverage and latency.
2Reliability
If trajectory information is continuously forwarded between all vehicles, then coordination completeness is improved, but resource consumption increases
Solution Approach 1:
The patent applies local quality by making the trajectory forwarding selective rather than universal. The server evaluates each trajectory pair to determine if a safety-critical situation exists, and only forwards trajectory information when such situations are detected. This selective approach maintains coordination completeness for critical cases while minimizing resource consumption by avoiding unnecessary communications.
Solution Approach 2:
The system performs partial action by implementing a filter function that processes only the necessary subset of trajectory information. Instead of continuously forwarding all trajectory data between all vehicle pairs, the server selectively forwards only those trajectories that involve potential safety-critical situations, reducing overall resource consumption while maintaining safety.
3Reliability
If both mobile radio network and direct communication channels are used simultaneously, then communication reliability is improved, but system complexity increases
Solution Approach 1:
The patent segments the communication system into two distinct functional layers: a mobile radio network layer for broad information distribution and trajectory collection, and a direct vehicle-to-X communication layer for targeted, low-latency coordination messages. This segmentation allows each communication channel to be optimized for its specific purpose while working together to achieve overall system reliability.
Solution Approach 2:
The server implements multi-functionality by serving multiple roles: receiving trajectory information from vehicles via mobile radio, evaluating safety-critical situations, and forwarding relevant information via direct communication. This universal platform handles both information gathering and coordinated response functions, reducing overall system complexity despite using multiple communication channels.
Data Source
AI summary
A method, wherein a received planned trajectory of a first vehicle relative to a received planned trajectory of the second vehicle is evaluated with respect to a potentially safety-critical situation and, if a potential safety-critical situation is detected, the planned trajectory of the second vehicle is output to be received by the first vehicle. Moreover, a corresponding method for execution by a communication apparatus of a first vehicle or an infrastructure device, wherein a planned trajectory of the first vehicle is output by means of a mobile radio interface of the first vehicle or the infrastructure device and by means of a communication interface designed for direct vehicle-to-X communication of the first vehicle or the infrastructure device. Furthermore, a method for preventing a potential safety-critical traffic situation between a first vehicle and a second vehicle, a processing apparatus, a communication apparatus and a system.