Hybrid Navigation System Offline Route Caching
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Solution Overview
Problem
Existing navigation systems face reliability and availability issues due to interference from geographic structures and the need for additional services information, such as restaurants and gas stations, which are not adequately addressed by current technologies.
Innovation Solution
A hybrid navigation system that combines a first device with a second device through a communication link to provide enhanced position information and store saved route information for display when the regional network is unavailable, using a communication unit and storage interface to access and store location-based services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a navigation system relies on continuous regional network access for providing location-based services, then the system can provide real-time navigation information and services, but the service becomes unavailable when interference or geographic features block the network transmission
Solution Approach 1:
The system pre-loads navigation data, map information, and location-based service data into local storage before network disconnection occurs. This preliminary action ensures that the navigation system can continue to provide services offline without requiring complex real-time network switching mechanisms.
Solution Approach 2:
The patent introduces a hybrid architecture that acts as an intermediary between the regional network and the navigation system. This hybrid system can operate in both network-connected and offline modes, mediating between the need for real-time data and the requirement for service continuity when the network is blocked.
2Measurement precision
If a navigation system uses only GPS for location identification, then the system structure remains simple, but the location precision is insufficient for accurate navigation services
Solution Approach 1:
The patent combines GPS satellite positioning with cellular network-based positioning and Wi-Fi positioning to create a multi-source hybrid positioning system. This merging of multiple positioning methods achieves higher location precision without requiring a completely new complex positioning infrastructure.
Solution Approach 2:
The navigation system is designed to perform multiple positioning functions using different methods (GPS, cellular triangulation, Wi-Fi fingerprinting) depending on availability. This multi-functional approach ensures accurate location identification across various environments without proportionally increasing system complexity.
3Adaptability or versatility
If a navigation system provides comprehensive location-based services information, then user satisfaction increases, but the amount of data required increases leading to higher storage and transmission requirements
Solution Approach 1:
The system implements local quality by caching frequently accessed location-based service data (restaurants, gas stations, hotels) specifically along the user's planned route rather than storing all possible service data. This selective data caching provides comprehensive service coverage for relevant areas while minimizing overall data volume.
Solution Approach 2:
The navigation system pre-loads and caches location-based service information for upcoming route segments before the user actually needs it. This preliminary data preparation ensures comprehensive service information is available offline without requiring continuous large-scale data transmission during navigation.
Data Source
AI summary
A method of operation of a hybrid navigation system includes: providing a position information for locating a first device; linking a second position to the position information, the second position for locating a second device; generating a planned route with the position information refined by the second position for transferring over a regional network to the first device or the second device; and storing saved route information from the planned route for displaying on the first device when the regional network is not available.