Roadside Sensor Configuration for Low-Bandwidth Driving Assistance
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Solution Overview
Problem
Existing vehicle driving assistance systems face challenges in obtaining relevant information while minimizing bandwidth usage, particularly in autonomous or partially assisted vehicles, as they require adaptive sensor configurations to meet specific information needs in real-time.
Innovation Solution
A method and system that utilize sensors installed along roads, controlled by an electronic processor, which adapt their configuration based on requests from electronic devices to provide targeted information efficiently, optimizing data transmission by determining the appropriate sensor configuration to meet periodic vehicle needs and minimizing data volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If sensors continuously transmit all detected data to vehicles, then information completeness is improved, but data transmission volume and bandwidth usage increase
Solution Approach 1:
The system extracts only the specific information needed by the vehicle from the complete sensor dataset. The processor receives information requests from vehicles, determines which sensor configurations are needed, and transmits only those specific data elements rather than all sensor data, thereby reducing transmission volume while maintaining information completeness for the vehicle's needs
Solution Approach 2:
The sensor configuration is adapted locally to match the specific information needs of each vehicle request. The processor determines optimal sensor configurations based on the requested information type and road portion, activating only the necessary sensors and parameters for that specific query rather than continuously transmitting all sensor data uniformly
2Reliability
If sensors are configured to monitor all possible road conditions, then measurement coverage is improved, but device complexity and energy consumption increase
Solution Approach 1:
The sensor configuration is made dynamic and adaptive rather than static. The processor receives information requests from vehicles, determines the appropriate sensor configuration based on the requested information and road portion, and dynamically adjusts sensor parameters accordingly. This allows the system to maintain comprehensive measurement coverage capability while reducing actual operational complexity by only activating needed sensors
Solution Approach 2:
The same set of road sensors serves multiple different vehicle information needs through dynamic reconfiguration. Rather than requiring separate dedicated sensors for each type of measurement, the universal sensor array can be configured to monitor various road conditions based on what information vehicles currently need, reducing overall system complexity while maintaining comprehensive coverage capability
3Speed
If sensors transmit data continuously at high frequency, then real-time information availability is improved, but bandwidth consumption and energy use increase
Solution Approach 1:
Instead of continuous high-frequency transmission, the system uses periodic or event-triggered data transmission. Sensors transmit data at intervals or in response to specific vehicle requests, rather than continuously. This maintains real-time information availability when needed while significantly reducing overall bandwidth consumption and associated energy usage during periods when no vehicles require information
Data Source
AI summary
A method is for assisting with the driving of vehicles traveling on a road by an assistance system including a sensor installed along sections of the road and an electronic processor. The method includes reception by the processor of a request indicating a road portion and requesting information on the state of the portion, determination by the processor, as a function of the requested information and the road portion, of the configuration among several determined configurations, of the sensor, sending by the processor to the sensor of a command indicating the configuration, sending the processor data delivered by the sensor in the configuration, and sending by the processor of the information determined as a function of the data.