Roadside Drive Control Offloading for Low-Latency Self-Driving
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Solution Overview
Problem
Existing self-driving vehicle systems face high processor load due to the need for on-vehicle calculations of control information, leading to increased latency in driving assistance.
Innovation Solution
An information processing system with a roadside information processor and communication antenna that acquires and sends vehicle information and drive control data to vehicles, reducing the computational burden on the vehicle's processor and enabling low-latency driving assistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control information for self-driving is calculated by a processor mounted in the mobile body, then the vehicle can independently process driving control, but the process load on the processor mounted in the mobile body increases
Solution Approach 1:
The patent divides the driving control system into two segments: a roadside information processing system that performs complex calculations for generating drive control information, and a mobile body processor that receives and executes the control commands. This segmentation reduces the computational burden on the mobile body processor while maintaining independent driving control capability.
Solution Approach 2:
The patent introduces a roadside information processing system as an intermediary between the vehicle sensors and the mobile body processor. This intermediary generates drive control information based on sensor data and transmits it to the vehicle, reducing the computational load on the mobile body processor while ensuring reliable driving control.
2Measurement precision
If more calculation is performed on the vehicle processor, then more accurate local control is achieved, but latency increases
Solution Approach 1:
The patent segments computational tasks between the roadside system and mobile body processor. The roadside system performs time-consuming calculations for generating drive control information, while the mobile body processor quickly executes received commands, thereby reducing latency while maintaining control accuracy.
Solution Approach 2:
The roadside information processing system performs calculations in advance to generate drive control information before the vehicle needs to execute the control action. This preliminary computation reduces the time required for real-time decision-making on the vehicle, thereby reducing latency.
Data Source
AI summary
Low latency of driving assistance is realized in a state where process load on a processor mounted in a vehicle is reduced.Disclosed is an information processing system, which comprises:an information processor installed on a roadside, anda communication antenna installed on the roadside,wherein the information processor comprises:a vehicle information acquisition unit to acquire vehicle information relating to one or more vehicles to be assisted located in a coverage area covered by the communication antenna,a transmit data generation unit to generate transmit data based on the vehicle information acquired by the vehicle information acquisition unit, anda data sending unit to send the transmit data generated by the transmit data generation unit to the vehicle to be assisted via the communication antenna, andthe transmit data includes at least one of vehicle position information indicating the position of the vehicle to be assisted, and drive control information.