Autonomous Vehicle State-Change Messaging for Position Interpolation
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Solution Overview
Problem
Autonomous vehicles generate large volumes of complex data that are difficult to transfer reliably over limited bandwidth, necessitating a reduction in data transmission without losing granularity in vehicle state information.
Innovation Solution
Autonomous vehicles transmit data only when significant state changes occur, allowing a data center to interpolate intermediate states, reducing the amount of data sent while maintaining granularity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If autonomous vehicles transmit all sensor data continuously, then complete vehicle state information is available at the data center, but data transmission volume becomes excessively large and bandwidth is exceeded
Solution Approach 1:
The patent extracts and transmits only the essential state change information from the full sensor data stream. Instead of sending all sensor data continuously, the system identifies and transmits only when state changes occur, extracting the critical information needed while discarding redundant data.
Solution Approach 2:
The system implements periodic transmission based on state changes rather than continuous transmission. The autonomous vehicle monitors its state continuously but transmits data periodically only when a state change is detected, creating an event-driven transmission schedule that reduces overall data volume.
2Quantity of substance
If autonomous vehicles reduce data transmission to save bandwidth, then connectivity costs decrease, but granularity of vehicle state information is lost
Solution Approach 1:
The system performs preliminary monitoring of vehicle state locally on the autonomous vehicle before transmission. By pre-identifying state changes and preparing only the necessary data for transmission, the system ensures that granularity is preserved in the transmitted portions while minimizing overall data volume.
Solution Approach 2:
The transmission strategy changes based on the state parameter being monitored. Different state parameters (position, speed, acceleration, sensor readings) have different transmission thresholds and priorities, allowing the system to adapt transmission volume to the actual information content needed.
3Reliability
If autonomous vehicles transmit data frequently, then data center has up-to-date vehicle information, but query burden and processing load on data center increases
Solution Approach 1:
The system extracts only the essential state change information needed for data center processing, removing unnecessary data that would increase query burden. This selective extraction maintains the reliability of critical information while reducing the processing load on the data center.
4Quantity of substance
If autonomous vehicles transmit only essential data, then data transmission volume decreases, but complexity of determining what to transmit increases
Solution Approach 1:
The autonomous vehicle's onboard system automatically determines what data to transmit by monitoring its own state changes. The system self-identifies when transmission is necessary based on predefined state change criteria, eliminating the need for external instructions or complex coordination with the data center about what data should be sent.
Data Source
AI summary
Systems, methods, and non-transitory computer readable mediums are provided for providing autonomous vehicle (AV) state information of an AV to a data center when an AV state change occurs so that the data center may determine one or more interpolated AV states of the AV prior to the AV state change. For example, a system may obtain sensor data generated by one or more sensor systems of the AV. Additionally, the system may determine a first AV state change of the AV at a first time based on the sensor data. Moreover, the system may generate a first message including a portion of the sensor data associated with the kinematic change in response to determining the first AV state change. Further, the system may transmit the first message to the data center.