Compensating V2I2V Data Handling Delay in Vehicle Trajectory Control
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Solution Overview
Problem
In autonomous vehicles, the discrepancy between the actual traffic situation and the digital environmental model due to data handling delays in wireless communication leads to sudden trajectory adjustments, compromising operational comfort and safety, potentially causing collisions.
Innovation Solution
Calculating the trajectory of a vehicle by accounting for data handling delays in operational data received from other vehicles via a radio access network, using an edge data center to determine and transmit these delays, and extrapolating the data to account for future positions and velocities, while also considering technical specifications and sensor data to ensure a conservative trajectory.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If operational data is transmitted via wireless connections to a radio access network, then the vehicle can receive real-time information from further vehicles, but the data handling delay causes the digital environmental model to become outdated
Solution Approach 1:
The patent applies preliminary action by calculating and compensating for data handling delays before they cause the digital environmental model to become significantly outdated. The control unit predicts the delay based on communication conditions and adjusts the operational data accordingly, so that the model remains accurate despite the inherent time lag in wireless transmission.
Solution Approach 2:
The patent implements feedback by continuously monitoring the data handling delay and using this information to adjust the digital environmental model in real-time. The control unit receives feedback about communication conditions and delay variations, then dynamically compensates for these delays to maintain model accuracy throughout the vehicle's operation.
2Reliability
If the trajectory is quickly adjusted to remove the discrepancy caused by data handling delay, then the digital environmental model accuracy is improved, but the vehicle suddenly accelerates reducing operational comfort
Solution Approach 1:
The patent applies preliminary action by calculating the required trajectory adjustments in advance based on predicted data handling delays. Instead of making sudden corrections after discrepancies appear, the control unit proactively adjusts the trajectory to account for expected delays, preventing the need for abrupt acceleration or deceleration.
Solution Approach 2:
The patent implements beforehand cushioning by incorporating buffer adjustments into the trajectory calculation that anticipate future discrepancies. The control unit adds cushioning adjustments to the trajectory in advance, so that when data handling delays occur, the vehicle is already positioned to handle them smoothly without sudden movements that would affect operational comfort.
Data Source
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Figure 2
AI summary
A method for operating a vehicle, wherein a control unit of a vehicle calculates a trajectory of the vehicle depending on operational data of a further vehicle, the operational data being transmitted from the further vehicle to the vehicle via wireless connections being established to a radio access network by respective communication units of the vehicle and the further vehicle; a vehicle and a computer program product.