Section: 5.2.19.2 Naf_EventExposure service 5.2.19.2.1 General
Content: Service description: This service enables consumer NF to subscribe and get notified of events. The events can be subscribed by a NF consumer are described in TS 23.288[ Architecture enhancements for 5G System (5GS) to support network data analytics services ]  [50]. The following service operations are defined for the Naf_EventExposure service: - Naf_EventExposure_Subscribe. - Naf_EventExposure_Unsubscribe. - Naf_EventExposure_Notify. The following events can be subscribed by a NF consumer (Event ID is defined in clause 4.15.1): - Service Experience information, as defined in clause 6.4.2 of TS 23.288[ Architecture enhancements for 5G System (5GS) to support network data analytics services ]  [50]. - Performance Data information, as defined in clauses 6.4.2 and clause 6.14.2 of TS 23.288[ Architecture enhancements for 5G System (5GS) to support network data analytics services ]  [50]. - Collective Behaviour information, as defined in clause 6.5.2 of TS 23.288[ Architecture enhancements for 5G System (5GS) to support network data analytics services ]  [50]. - UE Mobility information, as defined in clause 6.7.2.2 of TS 23.288[ Architecture enhancements for 5G System (5GS) to support network data analytics services ]  [50]. - UE Communication information, as defined in clause 6.7.3.2 of TS 23.288[ Architecture enhancements for 5G System (5GS) to support network data analytics services ]  [50]. - Exceptions information, as defined in clause 6.7.5.2 of TS 23.288[ Architecture enhancements for 5G System (5GS) to support network data analytics services ]  [50]. - User Data Congestion information, as defined in clause 6.8.2 of TS 23.288[ Architecture enhancements for 5G System (5GS) to support network data analytics services ]  [50]. - UE Data volume Dispersion information, as defined in clause 6.10.2 of TS 23.288[ Architecture enhancements for 5G System (5GS) to support network data analytics services ]  [50]. - DN Performance information, as defined in clause 6.14.2 of TS 23.288[ Architecture enhancements for 5G System (5GS) to support network data analytics services ]  [50]. - E2E data volume transfer time information, as defined in clause 6.18.2 of TS 23.288[ Architecture enhancements for 5G System (5GS) to support network data analytics services ]  [50]. - Relative Proximity information, as defined in clause 6.19.2 of TS 23.288[ Architecture enhancements for 5G System (5GS) to support network data analytics services ]  [50]. Event Filters are used to specify the conditions to match for notifying the event (i.e. "List of Parameter values to match"). If there are no conditions to match for a specific Event ID, then the Event Filter is not provided. The following table provides some examples on how the conditions to match for event reporting can be specified for various Event IDs for AF exposure. Table 5.2.19.2.1-1: Example of Event Filters for AF exposure events