Cellular Teleoperation Routing for Uneven Network Coverage
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Solution Overview
Problem
The availability and coverage of cellular networks are not spatially homogeneous and can be inconsistent over time, which hinders the reliable remote operation of vehicle fleets on road networks.
Innovation Solution
A method where a network node in the cellular network determines an optimal teleoperation route by assessing the availability of wireless connections, and if insufficient, suggests alternative routes that ensure safe and reliable remote operation of vehicles, using algorithms like Monte Carlo and weighted shortest path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If remote operation of vehicle fleet is implemented via cellular network, then operational cost is reduced and efficiency is improved, but reliability is compromised due to non-homogeneous and inconsistent wireless connection availability
Solution Approach 1:
The system performs preliminary assessment of wireless connection availability along the teleoperation route before confirming the route to the teleoperation server. The network node evaluates coverage and consistency of cellular network signals along the entire route, and only routes that meet reliability thresholds are confirmed for remote operation. This prevents vehicles from being assigned routes with insufficient wireless coverage, thereby maintaining reliability while enabling remote operation efficiency.
2Loss of time
If teleoperation route is confirmed without assessing wireless connection availability, then route confirmation speed is improved, but vehicle safety is compromised due to potential insufficient wireless coverage
Solution Approach 1:
The network node performs preliminary evaluation of wireless connection availability along the teleoperation route before confirmation. It assesses cellular network coverage, signal strength, and consistency metrics for the entire route ahead of time. Only routes that satisfy predetermined reliability thresholds are confirmed to the teleoperation server. This preliminary action ensures vehicle safety by preventing assignment of routes with insufficient wireless coverage, while maintaining efficient route confirmation through automated threshold-based validation.
3Device complexity
If cellular network coverage is assumed to be sufficient for remote operation, then system complexity is reduced, but operational reliability deteriorates due to spatial non-homogeneity and temporal inconsistency of wireless connections
Solution Approach 1:
The network node receives feedback information about actual wireless connection conditions along teleoperation routes and uses this data to dynamically adjust route confirmation decisions. The system continuously monitors cellular network availability, signal quality, and consistency metrics, and feeds this information back into the route assessment process. This feedback mechanism enables the system to adapt to changing network conditions while maintaining reliable remote operation without requiring overly complex predictive models.
Data Source
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AI summary
A method for operating a cellular network, wherein a teleoperation server remotely operates a vehicle fleet on a road network via a wireless connection provided by a cellular network and a network node of the cellular network receives a route request from the teleoperation server, the received route request comprising a starting position of a vehicle of the vehicle fleet, a target location to be reached by the vehicle, a teleoperation route connecting the target location to the starting position and a travel time of the vehicle; a network node for a cellular network and a computer program product.