V2X Communication Group Leader for Road User Coordination
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Solution Overview
Problem
Existing V2X communication technologies face challenges in managing the limited bandwidth for periodic basic information transmission, leading to potential overload and increased complexity in algorithms for road users, while also excluding vulnerable road users from coordinated operations.
Innovation Solution
The formation of temporary communication groups, where a road user planning an application transmits a request message, and upon response, a communication leader represents all group members by periodically sending a group status message, reducing the number of messages needed and enhancing safety for all participants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If periodic basic information is transmitted by all road users via the communication channel, then a complete image of road traffic is produced for each road user, but the communication channel becomes overloaded and the complexity of evaluation algorithms increases
Solution Approach 1:
The patent merges multiple road users into a platoon group, where only the lead vehicle transmits basic safety messages representing the entire group. This combining approach reduces the number of transmitting devices from N individual vehicles to 1 lead vehicle, thereby reducing channel load and simplifying evaluation algorithms while maintaining complete traffic situational awareness for all group members.
Solution Approach 2:
The lead vehicle's communication device serves multiple functions: it represents itself and all platoon members in the communication channel, transmits aggregated position and status information for the entire group, and enables all members to receive comprehensive traffic information through a single message stream, thus achieving multi-functionality with reduced complexity.
2Adaptability or versatility
If the number of applications and functions is increased, then more features are available for road users, but the communication bandwidth is overloaded
Solution Approach 1:
The patent combines multiple application functions (cooperative parking, platoon formation, intersection coordination) into a unified platoon communication framework. By merging these diverse applications under the single platoon structure, the system supports multiple functions while transmitting only one set of basic safety messages, thereby preventing bandwidth overload despite increased versatility.
Solution Approach 2:
The platoon communication system is designed with universal applicability, where the same basic safety message transmission mechanism serves multiple different applications and functions. This multi-functional design allows the system to support various road user coordination scenarios without requiring separate communication channels for each application, thus avoiding bandwidth overload.
3Device complexity
If vulnerable road users are excluded from platoon operations, then the complexity of coordination is reduced, but safety for all road users is compromised
Solution Approach 1:
The patent introduces the platoon structure as an intermediary between motor vehicles and vulnerable road users. The platoon communicates with vulnerable road users through the same basic safety message channel, allowing vulnerable users to benefit from coordinated operations without directly participating in platoon control decisions, thus maintaining safety while avoiding excessive coordination complexity.
Solution Approach 2:
The basic safety message transmission system serves multiple functions simultaneously: it coordinates platoon members, alerts vulnerable road users to platoon presence, and provides traffic information to all road users. This universal communication approach ensures vulnerable road users benefit from enhanced safety without requiring them to engage in complex platoon coordination protocols.
Data Source
AI summary
The present disclosure relates to a method for communication between road users, including at least one motor vehicle, in a traffic situation, wherein each road user has a communication device that uses a communication channel to periodically transmit basic information comprising at least one operating parameter and a position of the road user, wherein, to form a communication group for an application, in particular a movement maneuver, a road user that is planning to perform the application transmits a request message via the communication channel, wherein a response message from at least one further road user that is likewise planning or performing the application results in the communication group being established with said further road user, wherein at least one group member of the communication group periodically transmits a group status message via the communication channel as communication leader representing all group members, said group member status message using identification information to describe the group members as a joint object, performing the application, in such a way that an additional message sent to the object with the identification information is received and evaluated by all group members.