Vehicle Safety Message Withholding for Redundant State Updates
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Solution Overview
Problem
The increasing intelligence and connectivity of modern vehicles lead to a strain on wireless communication channels due to the frequent transmission of basic safety messages (BSMs) and maneuver messages (MMs), particularly in heavily trafficked areas with limited bandwidth, resulting in redundant information being transmitted.
Innovation Solution
A method and system that selectively withhold BSMs from transmission by determining if the current vehicle state information is redundant to previously transmitted predicted state information, using time-stamped data breadcrumbs to interpolate the vehicle's state and compare it to the current state, and withholding transmission if the deviation is within a threshold amount.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If basic safety messages are transmitted frequently to maintain traffic safety, then traffic safety and efficiency are improved, but wireless communication channels become strained due to redundant information transmission
Solution Approach 1:
The system extracts only the essential non-redundant information from basic safety messages by comparing current vehicle state with predicted state from maneuver messages. Only when deviations exceed thresholds are messages transmitted, removing redundant information while preserving critical safety data.
Solution Approach 2:
The system merges basic safety messages with maneuver messages by integrating the predicted state information from maneuver messages with current state data. This combination allows the system to determine redundancy and eliminate duplicate information transmission while maintaining comprehensive vehicle state awareness.
2Measurement precision
If basic safety messages are transmitted at high frequency to ensure real-time vehicle state information, then information accuracy is improved, but bandwidth consumption increases in heavily trafficked areas
Solution Approach 1:
The system applies partial action by transmitting only the necessary portion of basic safety messages when deviations from predicted state exceed thresholds. This selective transmission maintains information accuracy for critical changes while reducing overall message volume in stable conditions.
Solution Approach 2:
The system changes the transmission parameter from fixed high-frequency to dynamic threshold-based frequency. Transmission occurs only when state deviations exceed predetermined thresholds, adapting the transmission rate to actual vehicle state changes rather than using constant high frequency.
3Loss of information
If redundant basic safety messages are transmitted to maintain communication reliability, then information completeness is improved, but communication efficiency deteriorates due to unnecessary transmissions
Solution Approach 1:
The system uses feedback by continuously comparing current vehicle state with predicted state from previously transmitted maneuver messages. This feedback mechanism identifies when information has already been communicated versus when new information is necessary, eliminating redundancy while maintaining completeness.
Solution Approach 2:
The system performs preliminary action by transmitting maneuver messages with predicted state information in advance. This preliminary transmission of future state data allows the system to later determine which basic safety messages are redundant, preventing unnecessary transmissions while ensuring information completeness.
Data Source
AI summary
Examples of the presently disclosed technology provide systems and methods for intelligently withholding selected basic safety messages (or other similar messages) from transmission by determining that current vehicle state-related information contained in the selected BSMs is redundant to predicted vehicle state-related information contained in a previously transmitted maneuver message (or other similar messages). Accordingly, examples of the presently disclosed technology can reduce strain on wireless communication channel resources (e.g., proximate to large traffic environments) by reducing the number of messages exchanged among connected vehicles—while preserving the traffic safety and efficiency advantages associated with such communication.