Adaptive Map Download for Vehicle Navigation
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Solution Overview
Problem
Existing vehicle navigation systems face challenges with the impracticality of pre-storing high-definition maps due to data size and cost, as well as the inability to access recent or live route information, especially in areas with variable environmental conditions and limited network availability.
Innovation Solution
A system that determines whether to download map information based on projected environmental conditions and network availability, using a processor to obtain routes, acquire environmental and network information, and decide on map downloads for specific route portions, incorporating sensors and remote information servers for data acquisition and storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complete high-definition map information is pre-stored in the vehicle's data storage unit, then navigation accuracy and reliability are improved, but storage cost and device complexity increase significantly
Solution Approach 1:
The patent divides the complete map information into multiple segments based on geographic regions or route portions. Only the segments relevant to the current or planned route are downloaded and stored in the vehicle's data storage unit, while other segments remain on remote servers. This segmentation reduces the storage burden while maintaining navigation reliability for the specific route.
Solution Approach 2:
The system performs preliminary actions by downloading and storing map information for specific route portions in advance of when they are needed, based on predicted routing. This allows the vehicle to have necessary map data available offline while avoiding the need to store complete map sets, thus improving reliability without proportionally increasing storage complexity.
2Reliability
If complete map information is pre-stored in the vehicle, then access to map data is fast and reliable, but production cost and storage requirements increase
Solution Approach 1:
The patent applies local quality by storing different quantities and types of map data in different locations. Frequently accessed or critical route information is stored locally in the vehicle for fast access, while less frequently accessed or supplementary map data remains on remote servers. This differentiated storage strategy ensures map data availability for necessary routes while reducing overall data storage volume requirements.
3Measurement precision
If live route information is continuously updated, then navigation accuracy is improved, but network bandwidth and data transmission requirements increase
Solution Approach 1:
The system implements periodic action by updating route information at specific intervals or triggered by specific events (such as entering a new geographic zone or detecting significant environmental changes), rather than continuously. This approach maintains navigation accuracy by providing timely updates while reducing network bandwidth consumption and energy usage compared to continuous real-time updates.
4Adaptability or versatility
If map information is downloaded for all possible routes, then adaptability to different routes is improved, but storage cost and data management complexity increase
Solution Approach 1:
The patent applies dynamics by making the map data storage and download process adaptive and flexible. The system dynamically determines which map information to download based on predicted routing, current location, and environmental conditions. This dynamic approach improves route adaptability by ensuring relevant map data is available while avoiding the fixed complexity of pre-storing all possible route information.
Data Source
AI summary
Methods, systems, and apparatuses for adaptive download of map information are presented which include obtaining a route from a start location to a destination location for a vehicle, acquiring projected environmental information associated with a first portion in the route the vehicle is expected to traverse, acquiring projected network availability information associated with a second portion in the route the vehicle is expected to traverse; and determining whether to download map information associated with the first portion of the route based on (1) the projected environmental information and (2) the projected network availability information.