Section: 5.2.2.3.4 Namf_EventExposure_Notify service operation
Content: Service operation name: Namf_EventExposure_Notify. Service operation description: Provides the previously subscribed event information to the NF Consumer which has subscribed to that event before. Input, Required: AMF ID (GUAMI), Notification Correlation Information, Event ID, corresponding UE(s) (SUPI(s) and if available GPSI(s)), time stamp. Input, Optional: Event specific parameter list, Idle Status Indication (time when UE returned to Idle, Active Time, Periodic Update Timer, eDRX cycle, suggested number of DL packets). Output, Required: None. Output, Optional: None. When the AMF detects a UE access and mobility event corresponding to a Subscription, it invokes Namf_EventExposure_Notify service operation to the NF consumer(s) which has subscribed to the UE mobility event before. The event is notified towards the consumers for which the Event filters (which may include "AN type(s)") match. The Notification Target Address (+ Notification Correlation ID) indicates to the Event Receiving NF the specific event notification subscription. The event specific parameter indicates the type of mobility event and related information, e.g. Registration Area Update/new Registration Area. For Subscription Correlation ID changes due to the AMF reallocation, the AMF can send a list of additional subscriptions to UDM in order to trigger an event resynchronization. The optional event specific parameter list provides the values that matched for generating the event notification. The parameter values to match are specified during the event subscription (see clause 5.2.2.3.2). For example, if the event type reported is "AN change", the event specific parameter list contains the value of the new AN.