Broadcast Map Segments for Individualized Vehicle Environmental Maps
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Solution Overview
Problem
Autonomous vehicles face challenges in generating and maintaining accurate, real-time environmental maps due to limited onboard sensor capabilities and computational resources, which can lead to incomplete or delayed information exchange between vehicles and infrastructure, affecting navigation and safety.
Innovation Solution
A system that includes roadside infrastructure units (RSUs) generating and broadcasting map segments to vehicles, using sidelink direct communication to provide annotated, individualized environmental maps, reducing the computational load on vehicles and enhancing sensor fusion and object detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If autonomous vehicles rely solely on onboard sensors and computational resources to generate environmental maps, then vehicle independence and system simplicity are maintained, but map completeness, precision, and timeliness deteriorate due to limited sensor capabilities and computational power
Solution Approach 1:
The patent introduces roadside infrastructure units as intermediary components that generate and broadcast environmental map segments to vehicles. These RSUs act as mediators between the environment and vehicles, providing enhanced mapping capabilities without requiring vehicles to independently possess advanced sensors or computational resources. The RSUs process sensor data from stationary sensors and other sources to create accurate environmental maps that are then distributed to multiple vehicles.
Solution Approach 2:
The roadside infrastructure units serve multiple vehicles simultaneously, providing environmental map segments to any vehicle within communication range. This multi-functional approach allows a single RSU to enhance the mapping capabilities of numerous vehicles, reducing the need for each vehicle to have its own sophisticated mapping system while maintaining high map quality for all users.
2Measurement precision
If vehicles process and store complete environmental maps locally, then navigation accuracy improves, but computational load and memory requirements on vehicles increase significantly
Solution Approach 1:
The patent divides the complete environmental map into multiple map segments, each representing a specific geographic region. Vehicles receive only the map segments relevant to their current location and navigation needs, rather than processing entire large-scale maps. This segmentation reduces the computational load and memory requirements on vehicles while maintaining navigation accuracy for the relevant areas.
Solution Approach 2:
The system provides different map segment details to different vehicles based on their specific needs and locations. Each vehicle receives annotated map segments with information tailored to its route and environmental context, ensuring high precision where needed while reducing data transmission and processing for areas not relevant to that specific vehicle's operation.
3Loss of information
If vehicles exchange map information through traditional communication protocols, then information sharing is achieved, but communication efficiency and timeliness deteriorate due to protocol overhead and latency
Solution Approach 1:
The patent extracts and implements a customized communication protocol specifically designed for map segment broadcasting between roadside units and vehicles. This specialized protocol removes unnecessary overhead from traditional communication standards, enabling more efficient transmission of map data with reduced latency. The protocol is optimized for the specific requirements of environmental map exchange, improving both speed and reliability.
4Measurement precision
If roadside infrastructure generates and broadcasts detailed map segments to all vehicles, then map precision and timeliness improve, but infrastructure computational load and communication bandwidth requirements increase
Solution Approach 1:
The environmental map is divided into multiple segments representing different geographic regions. The roadside infrastructure generates and broadcasts only the relevant map segments to vehicles based on their locations and navigation needs, rather than transmitting complete maps to all vehicles. This segmentation reduces the computational load on infrastructure and minimizes communication bandwidth requirements while maintaining high precision for each vehicle's specific context.
Solution Approach 2:
The system implements selective broadcasting where roadside units transmit map segments to vehicles based on relevance criteria such as proximity, route compatibility, and current environmental conditions. Rather than broadcasting all available map data to all vehicles indiscriminately, the infrastructure provides partial information that is sufficient and optimized for each vehicle's specific needs, reducing overall system resource consumption.
Data Source
AI summary
An embodiment of a semiconductor package apparatus may include technology to establish communication between a first stationary unit and one or more vehicles, combine sensor data from the first stationary unit and at least one source outside the first stationary unit, generate an environmental map based on the combined sensor data, divide the environmental map into two or more map segments, and broadcast the two or more map segments. Other embodiments are disclosed and claimed.