See
clause 4.15.3.1 and
clause 4.15.2a.
In order to support the NWDAF to collect data from the AF via the NEF, the Event IDs associated with available data to be collected from the AF are defined in
clause 5.2.19.2.1, which can be subscribed by the NWDAF. The Event filters for the specific Event IDs as defined in
clause 5.2.19.2.1 can also be used for collecting data from the AF via the NEF.
Service operation name:
Nnef_EventExposure_Subscribe
Description:
the consumer subscribes to receive an event, or if the event is already defined in NEF, then the subscription is updated.
Inputs, Required:
(Set of) Event ID(s) as specified in
clause 4.15.3.1 or
Npcf_PolicyAuthorization_Notify and
Naf_EventExposure_Subscribe service operation, Target of Event Reporting (GPSI, SUPI, UE IPv4 address(es), UE IPv6 prefix(es), External Group Identifier, S-NSSAI, Internal Group Identifier, UE addressing information (IP or MAC address), or indication that any UE is targeted), Event Reporting Information defined in
Table 4.15.1-1, Notification Target Address (+ Notification Correlation ID), MTC Provider Information.
Inputs, Optional:
Event Filter, (set of) External Application Identifier(s), Subscription Correlation ID (in the case of modification of the event subscription), Expiry time, list of group member UE(s) whose subscription to event notification(s) are removed or added for a group-based event notification subscription, operation indication (cancellation or addition), DNN, S-NSSAI, Idle Status Indication request (if UE reachability or Availability after DDN failure reporting is requested).
Outputs, Required:
When the subscription is accepted: Subscription Correlation ID, Expiry time (required if the subscription can be expired based on the operator's policy).
Outputs, Optional:
First corresponding event report is included, if available (see
clause 4.15.1). External Identifier (representing an AF specific UE Identifier).
Service operation name:
Nnef_EventExposure_Unsubscribe
Description:
the NF consumer deletes an event if already defined in NEF.
Inputs, Required:
Subscription Correlation ID.
Outputs, Required:
Operation execution result indication.
Service operation name:
Nnef_EventExposure_Notify
Description:
NEF reports the event to the consumer that has previously subscribed.
Inputs, Required:
Event ID, Notification Correlation Information, time stamp.
Inputs, Optional:
Event information (defined on a per Event ID basis), Event Removal Indication, list of group member UE(s) whose subscription to event notification(s) are removed from a group-based event notification subscription.
Outputs, Required:
Operation execution result indication.