Lane-Level Navigation via Global and Roadside Units
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current navigation systems are inadequate for large-scale self-driving scenarios as they rely on human-oriented approaches and lack the ability to dynamically update paths based on real-time road conditions, leading to inefficiencies and increased terminal costs.
Innovation Solution
A navigation system architecture that includes a global navigation unit, roadside navigation units, and a terminal navigation unit, where the global unit determines a road-level global path and roadside units determine lane-level local paths, distributing path planning burden and enhancing precision and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a terminal navigator performs path planning and calculation locally, then navigation functionality is provided, but terminal costs increase and map updates are inconvenient
Solution Approach 1:
The patent introduces a navigation server as an intermediary between the terminal and the path planning system. The terminal navigator sends path planning requests to the navigation server, which performs the complex path planning and calculation operations. This mediator approach allows the terminal to provide navigation functionality without bearing the full computational burden, thereby reducing terminal costs while maintaining reliable navigation services.
2Adaptability or versatility
If a central navigation system is implemented, then real-time map updates and dynamic road condition information are available, but system complexity increases
Solution Approach 1:
The patent segments the navigation system into multiple independent components: terminal navigators, navigation servers, and map management modules. Each component performs specific functions - the terminal handles local navigation operations, the server manages path planning and real-time updates, and separate modules handle map data. This segmentation allows real-time map updates and dynamic road condition information to be integrated without overwhelming system complexity, as each segment can be developed and maintained independently.
3Ease of operation
If path planning is performed at the terminal level, then navigation is provided, but dynamic road condition information cannot be associated with path planning
Solution Approach 1:
The patent implements a feedback mechanism where the terminal navigator continuously sends current location and road condition information to the navigation server. The server processes this feedback information, updates path plans based on dynamic road conditions, and returns optimized navigation routes to the terminal. This feedback loop enables the system to associate dynamic road condition information with path planning while maintaining ease of operation at the terminal level.
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The present invention provides a navigation system, apparatus, and method. The navigation system includes a global navigation apparatus, a first roadside navigation apparatus, and a terminal navigation apparatus. The terminal navigation apparatus is configured to send, to the global navigation apparatus, a global path request used to request for a road-level global path. The global navigation apparatus is configured to: determine the global path according to the global path request, and send, to the terminal navigation apparatus, first indication information used to indicate the global path. The first roadside navigation apparatus is configured to: determine a lane-level local path according to the global path, and send, to the terminal navigation apparatus, second indication information used to indicate the local path. The terminal navigation apparatus is further configured to determine a first travelling path according to the first indication information and the second indication information. Therefore, the navigation system plans a lane-level path in an entire journey, navigation precision is improved, and the navigation system can be applicable to a large-scale self-driving scenario.