Probe Data Transmission Control for High-Precision Map Updates
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing techniques for updating lane-level high-precision maps using probe data face challenges in reducing communication costs and ensuring even information collection along roads, as they often result in repeated transmission of position data when vehicles stop and struggle to obtain information evenly across locations.
Innovation Solution
An information transmission control device that sets a transmission interval distance and offset based on current lane segment information and history data, shifting the transmission start position for probe data to prevent redundant transmissions and optimize data collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If probe data is transmitted at fixed intervals regardless of vehicle movement, then transmission simplicity is maintained, but communication cost increases due to redundant transmissions when vehicles stop
Solution Approach 1:
The patent applies dynamics by making the transmission interval adaptive rather than fixed. The system dynamically adjusts the probe data transmission interval based on vehicle movement status, switching between a first interval when the vehicle is moving and a second interval when stopped, thereby optimizing communication cost while maintaining operational simplicity
Solution Approach 2:
The system changes the transmission interval parameter based on vehicle state. By detecting whether the vehicle is in motion or stopped, the system modifies the transmission interval parameter to appropriate values, preventing redundant transmissions during stops while ensuring adequate coverage during movement
2Loss of information
If probe data is transmitted frequently to ensure complete coverage, then information completeness is improved, but communication load increases
Solution Approach 1:
The patent applies partial action by transmitting probe data selectively based on vehicle movement rather than continuously. The system transmits data at the first transmission interval when the vehicle is moving (ensuring information completeness) and reduces transmissions to the second interval when stopped, avoiding excessive communication load while maintaining necessary information coverage
3Device complexity
If transmission start position is fixed for all vehicles, then system simplicity is maintained, but information distribution becomes uneven across road locations
Solution Approach 1:
The patent applies asymmetry by introducing offset values that shift the transmission start position for different vehicles or road sections. This asymmetric adjustment ensures that probe data is collected from distributed positions across the road, achieving uniform information distribution while maintaining relatively simple system implementation through configurable offset parameters
Data Source
AI summary
The information transmission control device according to the present disclosure is for controlling a position to start transmitting probe data to a server; the information transmission control device uses a vehicle's current lane segment information and history information about the vehicle's having transmitted probe data, to set a transmission interval distance and an offset for changing a position to start transmitting probe data. By using the transmission interval distances and the offsets, transmission start positions to transmit probe data are shifted on a running unit basis or on a vehicle basis. Therefore, while the vehicle stops, multiple data transmission at the same position does not occur. This can reduce the communication cost, and makes it possible to obtain information evenly on the travel route.