US Patent 11917533 Method and system for network slice usage subscription

A method, a device, and a non-transitory storage medium are described in which a network slice usage subscription service is provided. The network slice usage subscription service may allow a network device to obtain network slice usage information and event notifications. The event notification may indicate when an end device is using a network slice and when the end device is no longer the network slice. The network device may include an application function (AF) device. The network device may use the event notification to perform an operation relating to the network slice and/or the end device.