Vehicle Map Update Range Control for Efficient Dynamic Data Sending
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Solution Overview
Problem
The transmission efficiency of dynamic information in high definition maps is low due to the large data amount required for real-time updates, which affects the bandwidth and delays in communication for autonomous vehicles.
Innovation Solution
A method and device that constrain the transmission range of dynamic information using path information from navigation maps, classifying and formatting the data based on road and lane levels, and sending it with periodicity or trigger events, ensuring timely and efficient delivery to vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all dynamic information in the high definition map is sent to the terminal in real time, then the terminal can obtain complete driving-related information, but the data amount increases leading to long transmission time and low transmission efficiency
Solution Approach 1:
The patent segments the high definition map into multiple regions based on the terminal's location and navigation path. Instead of transmitting all dynamic information from the entire map, only the regions relevant to the terminal's current and future path are selected and transmitted. This segmentation approach maintains the completeness of relevant information while significantly reducing the overall data transmission volume.
Solution Approach 2:
The patent extracts only the necessary dynamic information from the high definition map based on the terminal's location, navigation path, and driving behavior patterns. By taking out only the relevant portions of dynamic information (such as traffic conditions, road events, and environmental data) that affect the terminal's current and upcoming route, the system avoids transmitting unnecessary data while ensuring all critical driving-related information is delivered.
2Adaptability or versatility
If the indication range of dynamic information is expanded to cover the entire high definition map, then all possible driving scenarios are covered, but the data amount and transmission time increase significantly
Solution Approach 1:
The patent performs preliminary actions by pre-calculating the terminal's navigation path and identifying all regions that will be relevant along this path before transmission begins. The system proactively determines the indication range based on the terminal's current location, destination, and planned route, ensuring that all necessary dynamic information for upcoming driving scenarios is prepared and transmitted in advance, rather than waiting for requests or expanding coverage reactively.
Solution Approach 2:
The patent makes the indication range dynamic rather than static. The range adjusts automatically based on the terminal's real-time location, navigation path updates, and driving behavior. As the terminal moves and its path changes, the indication range dynamically expands or contracts to include only the regions that are currently or soon will be relevant, optimizing the balance between coverage and transmission efficiency.
3Measurement precision
If dynamic information is transmitted with high frequency to ensure real-time accuracy, then the information remains up-to-date, but the bandwidth consumption and transmission delays increase
Solution Approach 1:
The patent implements periodic transmission of dynamic information within the determined indication range. Instead of continuous high-frequency transmission, the system transmits updates at optimized intervals based on the type of dynamic information, its volatility, and the terminal's needs. This periodic approach maintains real-time accuracy for critical information while significantly reducing overall bandwidth consumption compared to continuous transmission.
Data Source
AI summary
This application relates to the field of communications technologies, and discloses an internet of vehicles-based dynamic information sending method and device, to constrain a range of sent dynamic information in a high definition map, so as to reduce a transmission amount of the dynamic information in the high definition map and improve transmission efficiency of the dynamic information. The method includes: A first device determines an indication range of dynamic information in a high definition map based on path information of a navigation map. The first device sends first indication information to a second device. The first indication information is used to indicate the dynamic information in the indication range in the high definition map.