Lane-Level Route Planning from Road-Level Navigation Corridors
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Solution Overview
Problem
Existing navigation systems lack the ability to provide lane-level guidance, leading to less precise control over vehicle movement, especially in situations requiring lane changes or maneuvers.
Innovation Solution
A system that converts road-level navigation routes into lane-level navigation routes by generating a corridor around the road-level route and using a lane-level map to determine an optimal lane-level navigation path, incorporating advanced driver assistance systems for precise vehicle control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If road-level navigation routes are used, then the navigation system is simpler to implement, but the vehicle control precision deteriorates
Solution Approach 1:
The patent segments the navigation system into two distinct levels: road-level navigation (providing overall route guidance) and lane-level navigation (providing precise lane-by-lane instructions). This segmentation allows the system to deliver high-precision lane-level control while maintaining the simplicity of road-level navigation as the foundation, thus resolving the contradiction between precision and complexity.
Solution Approach 2:
The patent transitions from two-dimensional road-level navigation to three-dimensional lane-level navigation by incorporating vertical layer information (different lanes at the same road level). This dimensional enhancement enables precise vehicle control through lane-level guidance while building upon the existing road-level navigation framework, effectively balancing precision requirements with system complexity.
2Ease of operation
If lane-level navigation is implemented, then the ease of operation improves, but the device complexity increases
Solution Approach 1:
The navigation system is divided into independent road-level and lane-level modules, where lane-level guidance operates as an enhanced layer on top of road-level navigation. This segmentation improves ease of operation by providing detailed lane-level maneuverability instructions while containing complexity within modular components that can be independently managed.
Solution Approach 2:
The lane-level navigation system is nested within the road-level navigation framework, with lane-level details providing enhanced guidance within the broader road-level context. This nesting structure improves ease of operation through detailed lane-level maneuverability while organizing complexity in a hierarchical manner, where the simpler road-level system serves as the foundation.
Data Source
AI summary
A computer includes a processor and a memory, and the memory stores instructions executable by the processor to generate a corridor defining a geometric area surrounding a road-level navigation route for a vehicle; apply the corridor to a lane-level map, the lane-level map including a plurality of lane segments, each lane segment defining a lane of a road from one endpoint to another endpoint; populate a lane-segment set with a subset of the lane segments from the lane-level map based on the application of the corridor to the lane-level map; and determine a lane-level navigation route based on the lane-segment set, the lane-level navigation route following the road-level navigation route.