Partial HD Map Delivery via Edge Servers for Autonomous Navigation
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Solution Overview
Problem
Autonomous vehicles face inaccuracies in recognizing their surroundings due to reliance on sensor data alone, necessitating a precise digital map for safe and efficient navigation.
Innovation Solution
A server system that divides a vehicle's traveling path into sections and assigns edge servers to transmit partial precise digital maps to the vehicle based on its location and proximity to edge servers, allowing for real-time data transmission and efficient map updates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a complete precise digital map is transmitted to the autonomous vehicle, then the navigation accuracy is improved, but the data transmission time and bandwidth requirements increase
Solution Approach 1:
The patent divides the complete precise digital map into multiple partial maps corresponding to different sections of the traveling path. The server transmits only the partial maps relevant to the vehicle's current and near-future location, rather than the entire map. This segmentation reduces the volume of transmitted data while maintaining navigation accuracy for the relevant path sections.
Solution Approach 2:
The patent provides different map data qualities and levels of detail for different spatial locations along the traveling path. High-resolution partial maps are transmitted for sections where the vehicle will be located soon, while lower-resolution or omitted data is provided for distant sections. This local quality approach optimizes bandwidth usage while ensuring navigation accuracy where needed.
2Measurement precision
If a complete precise digital map is transmitted to the autonomous vehicle, then the navigation accuracy is improved, but the bandwidth requirements increase
Solution Approach 1:
The patent segments the complete precise digital map into multiple partial maps corresponding to different geographic sections along the traveling path. The server identifies which sections are relevant to the vehicle's current position and upcoming route, then transmits only those specific partial maps. This segmentation dramatically reduces the total data volume requiring bandwidth transmission while maintaining the necessary navigation accuracy for the vehicle's operational context.
3Productivity
If the traveling path is divided into multiple sections and multiple edge servers are used, then the data transmission efficiency is improved, but the system complexity increases
Solution Approach 1:
The patent introduces a central server as an intermediary that coordinates between the autonomous vehicle and multiple edge servers. The central server receives the vehicle's traveling path information, divides it into sections, identifies relevant edge servers, and manages the transmission of partial maps from those edge servers to the vehicle. This intermediary approach enables efficient distributed data transmission while abstracting the system complexity from the vehicle, as the vehicle simply communicates with the central server without needing to directly manage multiple edge servers.
Data Source
AI summary
A server method of receiving a precise digital map for navigation or autonomous driving as a plurality of partial precise digital maps corresponding to servers respectively proximate to portions of a navigation path.