Lane-Level Navigation Data Segmentation for No-Network Route Segments
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Solution Overview
Problem
Existing navigation systems face challenges in providing timely and accurate lane-level navigation due to large data amounts and poor network connectivity, especially in areas like tunnels or canyons, leading to inefficient route updates and user experience issues.
Innovation Solution
A navigation system that segments the route into manageable segments, obtaining high-precision road data for each segment, especially in poor-network areas, and switches to road-level navigation when high-precision data is unavailable, ensuring timely and accurate lane-level guidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If lane-level navigation data is downloaded completely before navigation, then navigation precision is improved, but download time becomes excessively long
Solution Approach 1:
The navigation route is divided into multiple route segments, and high-precision road data is downloaded and displayed segment by segment rather than all at once. This allows the system to provide lane-level navigation precision for the current segment while avoiding the need to download the entire route data in advance, significantly reducing download time.
Solution Approach 2:
The system downloads high-precision road data for the next route segment in advance before the vehicle actually reaches it. This preliminary action ensures that when the vehicle enters the next segment, the data is already available for immediate display, maintaining navigation precision without requiring complete route data download beforehand.
2Measurement precision
If high-precision road data is downloaded in advance for all route segments, then navigation accuracy is improved, but network data consumption increases
Solution Approach 1:
Instead of downloading high-precision road data for the entire route, the system segments the route and downloads data only for the current and next route segments. This segmented approach maintains navigation accuracy for the areas that need it while dramatically reducing overall network data consumption.
Solution Approach 2:
The system applies high-precision road data locally only to the current and next route segments where it is actually needed, rather than uniformly across the entire route. This local quality approach ensures navigation accuracy in critical areas while minimizing unnecessary data consumption in areas where standard navigation suffices.
3Measurement precision
If the system waits for complete high-precision road data before displaying navigation, then navigation accuracy is improved, but response time deteriorates
Solution Approach 1:
The system displays navigation information segment by segment as the vehicle progresses along the route, rather than waiting for complete route data. This allows the system to provide accurate lane-level navigation for the current segment immediately, improving response time while maintaining navigation accuracy for the displayed portion.
Solution Approach 2:
The system performs preliminary downloads of high-precision road data for the next route segment before the vehicle reaches it. This ensures that when the vehicle enters the next segment, the data is already prepared and can be displayed immediately, improving response time without sacrificing navigation accuracy.
Data Source
AI summary
A navigation system, method and an electronic device provide for obtaining high-precision road data of a no-network-connection route segment from the server and displaying a lane-level navigation route of the no-network-connection route segment based on the high-precision road data of the no-network-connection route segment. When the electronic device moves to the no-network-connection route segment in the recommended route, the electronic device may obtain high-precision road data of a second route segment from the server and display a lane-level navigation route of the second route segment based on the high-precision road data of the second route segment. In this solution, the electronic device can quickly and accurately display a lane-level navigation route.