HD Map Data Verification Using Tile and Object Signatures
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Solution Overview
Problem
Existing methods for delivering high definition (HD) map data for advanced and autonomous driving applications face challenges in ensuring functional safety and integrity, particularly due to complex software components and the risk of data corruption during transmission and storage, which can have severe consequences for vehicle navigation.
Innovation Solution
A method of verifying digital map data at the tile and object levels using digital signatures and security hashes to ensure integrity and authenticity, with a client application implementing efficient verification processes to meet functional safety requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If digital map data is provided without verification mechanisms, then device complexity and data provision speed are maintained at acceptable levels, but functional safety and reliability of the map data cannot be guaranteed
Solution Approach 1:
The patent applies preliminary action by verifying the digital map data before it is delivered to the vehicle. A verification mechanism checks the consistency and correctness of map data against a reference map dataset prior to provision, ensuring functional safety is established in advance rather than during vehicle operation.
Solution Approach 2:
The patent introduces an intermediary verification mechanism that acts as a mediator between the map data provider and the vehicle system. This intermediary layer checks map data consistency without requiring complex changes to the vehicle's existing systems, thereby maintaining acceptable device complexity while improving reliability.
2Reliability
If complex verification mechanisms are implemented to ensure map data safety, then functional safety improves, but processing time and system complexity increase
Solution Approach 1:
The patent segments the verification process into distinct modular checks that can be performed independently and efficiently. The verification mechanism is divided into separate functional components that check different aspects of map data consistency, allowing for optimized processing and reduced overall verification time.
3Reliability
If extensive verification of digital map data is performed, then data reliability improves, but computational resources and processing overhead increase
Solution Approach 1:
The patent applies partial action by implementing verification checks that are sufficient to ensure functional safety without performing exhaustive analysis of all map data. The verification mechanism focuses on critical consistency checks and safety-relevant parameters rather than complete data validation, reducing computational energy consumption while maintaining reliability.
Data Source
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AI summary
Disclosed herein is a technique for the generating and provision of digital map data that is safe and reliable. The technique enables the verification of the digital map data in a map-client using a simple and efficient data structure to check the correctness of the map data before in-vehicle delivery to components that rely on this map data.