4.1 Introduction
29.5203GPP5G SystemNetwork Data Analytics ServicesRelease 18Stage 3TS
The Nnwdaf services are used by the NWDAF to provide specific analytics information and ML models.
Analytics information is either statistical information of past events, or predictive information.
The following services are specified for the NWDAF:
Table 4.1-1: Services provided by NWDAF
|
Service Name |
Description |
Service Operations |
Operation Semantics |
Example Consumer(s) |
|
Nnwdaf_EventsSubscription (NOTE 1) |
This service enables the NF service consumers to subscribe to/unsubscribe from notifications for different analytics information from the NWDAF. It also enables the transfer of subscriptions between NWDAFs |
Subscribe |
Subscribe / Notify |
PCF, NSSF, AMF, SMF, NEF, AF, OAM, CEF, NWDAF, DCCF |
|
Unsubscribe |
||||
|
Notify |
||||
|
Transfer |
Request / Response |
NWDAF |
||
|
Nnwdaf_AnalyticsInfo |
This service enables the NF service consumers to request and get specific analytics or context information related to analytics subscriptions from the NWDAF. |
Request |
Request / Response |
PCF, NSSF, AMF, SMF, NEF, AF, OAM, NWDAF, DCCF |
|
ContextTransfer |
Request / Response |
NWDAF |
||
|
Nnwdaf_DataManagement |
This service enables the NF service consumers to subscribe to/unsubscribe from notifications when subscribed event(s) are detected or retrieve the subscribed data from the NWDAF. |
Subscribe |
Subscribe / Notify |
NWDAF, DCCF, MFAF |
|
Unsubscribe |
||||
|
Notify |
||||
|
Fetch |
Request / Response |
NWDAF, DCCF, MFAF |
||
|
Nnwdaf_MLModelProvision (NOTE 2) |
This service enables the NF service consumers to subscribe to/unsubscribe from notifications when a ML model matching the subscription parameters becomes available. |
Subscribe |
Subscribe / Notify |
NWDAF |
|
Unsubscribe |
||||
|
Notify |
||||
|
NOTE 1: This service corresponds to the Nnwdaf_AnalyticsSubscription service defined in 3GPP TS 23.288 [17]. NOTE 2: This service implements also the Nnwdaf_MLModelInfo service as specified in 3GPP TS 23.288 [17] by using immediate and one-time reporting requirement. |
||||
Table 4.1-2 summarizes the corresponding APIs defined in this specification.
Table 4.1-2: API Descriptions
|
Service Name |
Clause |
Description |
OpenAPI Specification File |
apiName |
Annex |
|
Nnwdaf_EventsSubscription |
5.1 |
Nnwdaf Events Subscription Service. |
TS29520_Nnwdaf_EventsSubscription.yaml |
nnwdaf-eventssubscription |
A.2 |
|
Nnwdaf_AnalyticsInfo |
5.2 |
Nnwdaf Analytics Information Service |
TS29520_Nnwdaf_AnalyticsInfo.yaml |
nnwdaf-analyticsinfo |
A.3 |
|
Nnwdaf_DataManagement |
5.3 |
NWDAF Data Management Service |
TS29520_Nnwdaf_DataManagement.yaml |
nnwdaf-datamanagement |
A.4 |
|
Nnwdaf_MLModelProvision |
5.4 |
NWDAF ML Model Provision Service |
TS29520_Nnwdaf_MLModelProvision.yaml |
nnwdaf-mlmodelprovision |
A.5 |