V2X Collective Perception Message for Traffic Safety
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Solution Overview
Problem
Current Vehicle to Everything (V2X) communication systems, particularly in Cooperative Awareness (CA) services, are limited as they only share information of the V2X communication device itself, failing to provide comprehensive situational awareness that includes the presence and behavior of surrounding road users and objects, especially those without V2X devices.
Innovation Solution
The introduction of a Collective Perception (CP) service and message structure, where V2X communication devices share information about detected road users and objects, including those without V2X devices, through Collective Perception Messages (CPM), enhancing situational awareness and safety by broadcasting the state and attributes of surrounding entities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If V2X communication devices share information about all detected road users and objects through Collective Perception Messages, then situational awareness and traffic safety are improved, but the quantity of transmitted data increases leading to communication overhead
Solution Approach 1:
The patent extracts and transmits only the most critical attributes of detected objects (position, speed, acceleration, heading, dimensions, object type) rather than complete sensor data. This selective extraction maintains safety-relevant information while significantly reducing data volume for communication
Solution Approach 2:
The information about detected objects is segmented into discrete attribute fields within the CPM message structure, allowing selective transmission of only necessary parameters rather than bulk data, thus optimizing communication efficiency
2Loss of information
If V2X communication devices transmit detailed information about surrounding entities, then comprehensive situational awareness is achieved, but the complexity of message processing and communication overhead increases
Solution Approach 1:
The patent changes the parameter representation by using standardized, fixed-format fields for object attributes (e.g., predefined object types, structured position/speed/acceleration fields) rather than raw sensor data, simplifying processing while preserving essential information
Solution Approach 2:
The patent transmits a partial set of attributes that are most critical for safety decisions (position, speed, acceleration, heading) rather than complete object descriptions, achieving sufficient situational awareness with reduced processing complexity
Data Source
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AI summary
Provided is a method of transmitting a V2X message by a V2X communication device of a vehicle. The method includes receiving, from an external V2X communication device, a V2X message providing basic information related to the external V2X communication device, generating a Collective Perception (CP) message for generating a collective perception for at least one first detection object detected by the V2X communication device, and transmitting the CP message. Here, the V2X message includes ID information identifying the external V2X communication device and position information indicating the position of the external V2X communication device. Also, the generating of the CP message includes determining, based on the V2X message, whether an object related to the external V2X communication device is the same object as one of the at least one first detection object.