Remote Vehicle Assistance Expiration for Delay-Aware Control
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Solution Overview
Problem
Autonomous vehicle remote assist systems face challenges in ensuring that remote-control actions align with the remote operator's intentions due to delays in communication, which can cause discrepancies between the recognized and actual conditions of the vehicle and its surroundings.
Innovation Solution
A remote-control apparatus and system that receives vehicle condition information, determines the expiration term of assistance information, and sends it to the vehicle to ensure timely execution of remote-control actions intended by the operator, thereby minimizing the impact of communication delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the autonomous vehicle performs safety verification tasks after receiving assistance information, then the vehicle can ensure operational safety, but communication delays cause the recognized conditions to differ from actual conditions, resulting in remote-control actions contrary to the operator's intention
Solution Approach 1:
The system determines an expiration term for the assistance information before the vehicle executes the remote-control action. This preliminary time-based validation ensures that the assistance information is used only within a valid time window, preventing execution based on outdated information while maintaining the necessary safety verification process
Solution Approach 2:
The system provides feedback to both the remote operator and the vehicle about the expiration term and timing status of assistance information. This feedback mechanism allows the operator to understand the timing context of their commands and enables the vehicle to make informed decisions about whether to execute pending actions based on current conditions
2Ease of operation
If the remote operator provides assistance information for remote assistance, then the vehicle can execute remote-control actions, but communication delays cause discrepancies between the recognized and actual conditions of the vehicle and surroundings
Solution Approach 1:
The system preliminarily determines an expiration term when the assistance information is received or generated. This pre-established time boundary is then used to validate whether the information remains valid for execution, preventing the use of outdated condition information without requiring complex real-time synchronization
Solution Approach 2:
The system changes the parameter of time validity by introducing an expiration term that transforms the assistance information from a static command into a time-bound instruction. This parameter change enables the system to automatically adapt to changing conditions without requiring continuous communication or complex state tracking
Data Source
AI summary
In a remote-control apparatus, a receiver receives, from a vehicle, vehicle condition information representing a condition of the vehicle and a surrounding condition around the vehicle. An accepting unit presents the vehicle condition information to a remote operator, and accepts assistance information for remote assistance of the vehicle inputted by the remote operator. A determiner determines an expiration term of the assistance information. The expiration term of the assistance information is defined as an end time of an assistance-information valid period that has started since an input time of the assistance information. A sender sends, to the vehicle, the assistance information and the expiration term of the assistance information.