This service enables the consumer to subscribe/unsubscribe for network data analytics. When the subscription for network data analytics is accepted by the analytics NWDAF, the consumer receives from the NWDAF an identifier (Subscription Correlation ID) allowing to further manage (modify, delete) this subscription. The modification of Analytics subscription can be enforced by NWDAF based on operator policy and configuration. This service also enables the consumer to transfer analytics subscriptions to another NWDAF using the Nnwdaf_AnalyticsSubscription_Transfer service operation. Using this service operation, a consumer can request to the NWDAF to prepare for or take over analytics subscription(s), indicating also if and where analytics context is available.

Nnwdaf_AnalyticsSubscription_Subscribe.

Subscribes to NWDAF analytics with specific parameters.

When the subscription is accepted: Subscription Correlation ID (required for management of this subscription). When the subscription is not accepted, an error response.

None.

Nnwdaf_AnalyticsSubscription_Unsubscribe.

Unsubscribe to NWDAF analytics.

Subscription Correlation ID.

None.

Operation execution result indication.

None.

Nnwdaf_AnalyticsSubscription_Notify.

NWDAF notifies the consumer instance of the analytics that has subscribed to the specific NWDAF service. See also clause 6.1.3 for contents of the Analytics Exposure.

Notification Correlation Information: this parameter indicates the Notification Correlation Id that has been assigned by the consumer during analytics subscription.

Operation execution result indication.

None.

Nnwdaf_AnalyticsSubscription_Transfer.

Requests to NWDAF for transferring analytics subscription(s) from the consumer NWDAF.

Operation execution result indication.

None.

this service enables the consumer to request and get from NWDAF network data analytics or enables NWDAF to request transfer of analytics context from another NWDAF.

Nnwdaf_AnalyticsInfo_Request.

The consumer requests NWDAF operator specific analytics.

(Set of) Analytics ID(s) as defined in Table 7.1-2, Target of Analytics Reporting, Analytics Reporting Parameters (including Analytics target period, etc.

Analytics Filter Information, preferred level of accuracy of the analytics, preferred level of accuracy per analytics subset, time when analytics information is needed, maximum number of objects requested (max), preferred order of results, maximum number of SUPIs requested (SUPImax), Analytics Metadata Request, Dataset Statistical Properties, Output strategy, Data time window, Use case context.

If the request is accepted, then set of the tuple (Analytics ID, Analytics specific parameters). When the request is not accepted, an error response.

Timestamp of analytics generation (required when ADRF is deployed), validity period, confidence, revised waiting time, Analytics Metadata Information. See clause 6.1.3.

Nnwdaf_AnalyticsInfo_ContextTransfer.

Requests to NWDAF to transfer context information related to analytics subscriptions.

(Set of) Analytics context identifier(s).

Requested Analytics Context per analytics context identifier.

(Set of) Analytics Context as specified in clause 6.1B.4.

ADRF ID with Analytics Context Type stored in the ADRF (i.e. Historical output Analytics and/or Data related to Analytics).

This service enables the consumer to subscribe/unsubscribe for data exposed by an NWDAF, fetch the subscribed data. Historical data or runtime data may be obtained using this service.

Nnwdaf_DataManagement_Subscribe.

The consumer subscribes to receive data, or if the data is already requested from the NWDAF, then the subscription is updated. The subscription includes service operation specific parameters that identify the data to be provided and may include formatting and processing instructions that specify how the data is to be delivered to the consumer. The consumer may request bulked data related to Analytics, as an alternative to asking individual events (i.e. subscription to multiple event IDs to obtain the data required for an analytics generation). The consumer may also request that data be stored in an ADRF. When historical data is being obtained, the consumer may specify the ID of the ADRF or NWDAF containing the data.

Data Specification or Analytics Specification, Notification Target Address(es) (+ Notification Correlation ID(s)). When the required data is data for Event IDs received from NFs, the Data Specification includes set of Event IDs, Event Filter Information, Target of Event Reporting. When the required data is a bulked data for an Analytics ID, the Data Specification includes Target of Reporting with the Analytics ID to generate bulked data, Target of Analytics reporting and Analytics Filter.

Service Operation, Time Window, NF (or NF-Set) ID, ADRF or NWDAF hosting ADRF information where data are to be stored, ADRF ID where historical data are stored, Formatting Instructions, Processing Instructions, user consent check information (i.e. an indication that the data consumer has checked user consent), purpose for data collection.

When the subscription is accepted: Subscription Correlation ID (required for management of the requested subscription). When the subscription is not accepted, an error response.

First corresponding event report is included, if available (see clause 4.15.1 of TS 23.502), Requested data.

Nnwdaf_DataManagement_Unsubscribe.

The NF consumer unsubscribes to the NWDAF for data.

Subscription Correlation ID.

Operation execution result indication.

None.

Nnwdaf_DataManagement_Notify.

NWDAF notifies the consumer instance of the requested data, or notifies of the availability of previously subscribed Data or Analytics when delivery is via an NWDAF.

Notification Correlation ID, time stamp representing time when NWDAF completed preparation of the requested data.

• Requested Data with timestamp;
• Fetch Instructions;
• Termination Request.

etch Instructions indicate whether the data are to be fetched by the Consumer. If the data are to be fetched, the fetch instructions include an address from which the data may be fetched, one or more Fetch Correlation IDs and a deadline to fetch the data (Fetch Deadline). Termination Request indicates that NWDAF requests to terminate the data management subscription, i.e. NWDAF will not provide further notifications related to this subscription.

Operation execution result indication.

None.

Nnwdaf_DataManagement_Fetch.

Consumer retrieves from the NWDAF subscribed data (which is regarded as a kind of data), as indicated by Fetch Instructions from Nnwdaf_DataManagement_Notify.

Set of Fetch Correlation ID(s).

None.

Operation execution result indication.

Requested data.

This service enables the consumer to receive a notification when an ML model matching the subscription parameters becomes available. When the subscription is accepted by the NWDAF containing MTLF, the consumer NF, i.e. the NWDAF containing Analytics Logical Function, receives from the NWDAF an identifier (Subscription Correlation ID) allowing to further manage (modify, delete) this subscription. The modification of ML model subscription can be enforced by NWDAF based on operator policy and configuration.

Nnwdaf_MLModelProvision_Subscribe.

Subscribes to NWDAF ML model provision with specific parameters.

(set of) Analytics ID(s) defined in Table 7.1-2, Notification Target Address (+ Notification Correlation ID).

Subscription Correlation ID (in the case of modification of the ML model subscription), ML Model Filter Information to indicate the conditions for which ML model for the analytics is requested and Target of ML Model Reporting to indicate the object(s) for which ML model is requested (e.g. specific UEs, a group of UE(s) or any UE (i.e. all UEs)), ML Model Reporting Information (including e.g. ML Model Target Period), Expiry time, Use case context, indication of support for multiple ML models, multiple ML models Filter Information to indicate the conditions for which multiple ML models are requested.

When the subscription is accepted: Subscription Correlation ID (required for management of this subscription), Expiry time (required if the subscription can be expired based on the operator's policy).

None.

Nnwdaf_MLModelProvision_Unsubscribe.

unsubscribe to NWDAF ML model provision.

Subscription Correlation ID.

None.

Operation execution result indication.

None.

Nnwdaf_MLModelProvision_Notify.

NWDAF notifies the ML model information to the consumer instance which has subscribed to the specific NWDAF service.

Notification Correlation Information, Set of:

Validity period, Spatial validity.

Operation execution result indication.

None.

this service enables the consumer to request and get from NWDAF containing MTLF ML Model Information.

Nnwdaf_MLModelInfo_Request

The consumer requests NWDAF ML Model Information.

(Set of) Analytics ID(s) defined in Table 7.1-2.

ML Model Filter Information to indicate the conditions for which ML model for the analytics is requested and Target of ML Model Reporting to indicate the object(s) for which ML model is requested (e.g. specific UEs, a group of UE(s) or any UE (i.e. all UEs)), ML Model Reporting Information (including e.g. ML Model Target Period), Use case context, indication of support for multiple ML models, multiple ML models Filter Information to indicate the conditions for which multiple ML models are requested.

Set of:

Validity period, Spatial validity.