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Content for  TS 23.288  Word version:  17.1.0

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8  DCCF Services |R17|Word‑p. 178

8.1  General

Table 8.1-1 shows the DCCF services and DCCF service operations.
Service Name Service Operations Operation Semantics Example Consumer(s)
Ndccf_DataManagementSubscribeSubscribe / NotifyNWDAF, PCF, NSSF, AMF, SMF, NEF, AF
UnsubscribeNWDAF, PCF, NSSF, AMF, SMF, NEF, AF
NotifyNWDAF, PCF, NSSF, AMF, SMF, NEF, AF
FetchRequest / ResponseNWDAF, PCF, NSSF, AMF, SMF, NEF, AF
Ndccf_ContextManagementRegisterRequest / ResponseNWDAF, ADRF
UpdateRequest / ResponseNWDAF, ADRF
DeregisterRequest / ResponseNWDAF, ADRF
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8.2  Ndccf_DataManagement service

Service Description:
This service enables the consumer to subscribe/unsubscribe for data or analytics via the DCCF and have data delivered via the DCCF or via a messaging framework. Historical data, or runtime data may be obtained using this service.
When the subscription is accepted by the DCCF, the consumer NF receives from the DCCF an identifier (Subscription Correlation ID) allowing it to further manage (modify, delete) the subscription.

8.2.2  Ndccf_DataManagement_Subscribe service operation

Service operation name:
Ndccf_DataManagement_Subscribe
Description:
The consumer NF uses this service operation to subscribe to the DCCF for data or analytics. The subscription includes service operation specific parameters that identify the data or analytics 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 also request that data shall be stored in an ADRF or an NWDAF hosting ADRF functionality.
Inputs, Required:
Service operation, Analytics Specification or Data Specification, Notification Target Address(es) (+ Notification Correlation ID (s)).
Inputs, Optional:
Time Window, NF (or NF-Set) ID, ADRF or NWDAF hosting ADRF information, Formatting Instructions, Processing Instructions.
"Service Operation" identifies the service used by the DCCF to request data or analytics from a Data Source (eg: Namf_EventExposure_Subscribe or Nnwdaf_AnalyticsSubscription_Subscribe)
"Analytics Specification or Data Specification" is the "Service Operation" specific required and optional input parameters that identify the data to be collected (e.g. Analytics ID(s) / Event ID (s), Target of Event Reporting, Event Filter, etc.). Service Operations and input parameters are defined in clause 7 for NWDAF and in TS 23.502, clause 5.2 for the other NFs.
"Time Window" is the start and stop time when the requested data or analytics was or will be collected. If the Time Window includes a period in the past, then the data or analytics collection is "historical". If the Time Window includes a period in the future, the data or analytics collection is "runtime".
NF (or NF-Set) ID specifies a data source that may provide the data.
ADRF Information specifies that collected data or analytics is to be stored in an ADRF, and optionally an ADRF or NWDAF ID.
Formatting Instructions and Processing Instructions are as defined in clause 5A.4.
Outputs Required:
When the subscription is accepted: Subscription Correlation ID (required for management of this subscription).
Outputs, Optional:
First corresponding event report is included, if available (see clause 4.15.1 of TS 23.502), Requested data.
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8.2.3  Ndccf_DataManagement_Unsubscribe service operationWord‑p. 179

Service operation name:
Ndccf_DataManagement_Unsubscribe
Description:
The consumer unsubscribes to DCCF for data or analytics.
Inputs, Required:
Subscription Correlation ID.
Inputs, Optional:
None.
Outputs, Required:
Operation execution result indication.
Outputs, Optional:
None.

8.2.4  Ndccf_DataManagement_Notify service operation

Service operation name:
Ndccf_DataManagement_Notify
Description:
Provides the previously subscribed Data or Analytics, or notification of availability of previously subscribed Data or Analytics to the NF Consumer when data delivery is via the DCCF.
Inputs, Required:
Notification Correlation Information.
Inputs, Optional:
Data or Analytics, Fetch Instructions
Fetch Instructions indicate whether the data or analytics are to be fetched by the Consumer. If the data or analytics are to be fetched, the fetch instructions include an address from which the data may be fetched and one or more Fetch Correlation IDs.
Outputs, Required:
Operation execution result indication.
Outputs, Optional:
None.
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8.2.5  Ndccf_DataManagement_Fetch service operationWord‑p. 180

Service operation name:
Ndccf_DataManagement_Fetch
Description:
Consumer retrieves from the DCCF data previously subscribed to by the Consumer, as indicated by Fetch Instructions received in Ndccf_DataManagement_Notify.
Inputs, Required:
Set of Fetch Correlation ID(s).
Inputs, Optional:
None.
Outputs, Required:
Operation execution result indication.
Outputs, Optional:
Formatted /Processed Events or Analytics.

8.3  Ndccf_ContextManagement service

8.3.1  General

Service Description:
This service enables the consumer to register collected data or analytics with the DCCF.
When the DCCF is configured by the consumer NF, the DCCF supplies a Transaction Reference Id. The Consumer NF may use the Transaction Reference Id in subsequent transactions to update or delate the context in the DCCF.

8.3.2  Ndccf_ContextManagement_Register service operation

Service operation name:
Ndccf_ContentManagement_Register
Description:
The consumer NF uses this service operation to register data or analytics it is collecting to the DCCF. The registration includes a service operation specific Analytics/Data Specification that identifies the data or analytics that are being collected or has been collected.
Inputs, Required:
Service Operation, Analytics/Data Specification, NWDAF ID or ADRF ID.
Inputs, Optional:
None
Outputs Required:
Transaction Reference ID(s), Operation execution result indication.
Outputs, Optional:
None.
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8.3.3  Ndccf_ContextManagement_Update service operation

Service operation name:
Ndccf_ContentManagement_Update
Description:
The consumer NF uses this service operation to update a registration of data or analytics to the DCCF. The registration update includes a service operation specific Analytics/Data Specification that identifies the data or analytics that is being collected or has been collected.
Inputs, Required:
Transaction Reference ID(s), Service Operation, Analytics/Data Specification
Inputs, Optional:
None
Outputs Required:
Transaction Reference ID(s), Operation execution result indication.

8.3.4  Ndccf_ContextManagement_Deregister service operationWord‑p. 181

Service operation name:
Ndccf_ContentManagement_Deregister
Description:
The consumer NF uses this service operation to delete a registration of data or analytics to the DCCF.
Inputs, Required:
Transaction Reference ID(s)
Inputs, Optional:
None
Outputs Required:
Transaction Reference ID(s), Operation execution result indication.
Outputs, Optional:
None.

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