Abstract: A method for assessing a state of a radio channel. The method includes: ascertaining or providing a piece of state information, which characterizes a simulated state of a spatial arrangement of components of the surroundings of the wireless communication network; ascertaining at least one prediction based on a machine-trained model, the state information being provided as an input parameter in an input section of a machine-trained model, the state information being propagated by the machine-trained model, and the at least one prediction of a piece of channel state information based on the machine-trained model, which characterizes a state of at least one radio channel between two communication modules, being provided in an output section of the machine-trained model.

Abstract: A system for providing alert notifications to multiple persons or to a plurality of related geographic locations. The system stores a database of information including a plurality of communications identifiers and additional information for subscribers having those identifiers, including geographic locations and/or school/organization membership information. The system responds to commands identifying alerts to be delivered to affected geographic areas or schools/organizations, by retrieving communications identifiers in the threatened geographic location or associated with the named school/organization, establishing a communications connection using each retrieved communication identifier, and delivering the alert. Alerts may be initiated by authorized personnel via telephone or Internet interaction with the system, or may be generated automatically from data feeds such as the EMWIN system of the National Weather Service.