The ParameterSubscription UC allows any mobile machine to request meta-information, such as AssetId or DeviceClass of another mobile machine. As mobile mining machines, such as a hydraulic excavator, dozer or a dump truck, typically roam around freely, it becomes necessary, in the context of an autonomous, decentralized operation, for machines to inform each other about their current location and device type. Using the variables described in this UC, this information can be requested or subscribed. A sequence diagram of this UC is depicted in Figure 4.


Figure 4 – Sequence Diagram of the ParameterSubscription Use Case