In some cases data consumers (e.g. NWDAF or ADRF) collect data from data source NF directly, e.g. when NWDAF is co-located with 5GC NF.
To enable data consumers can get the data which has been collected by NWDAF or ADRF directly (i.e. not via DCCF), the NWDAF or ADRF may register/update the data collection profile to the DCCF during/after the procedure of data collection. DCCF can then determine some requested data is available in NWDAF or ARDF and can coordinate data collection based on the data collection profile.
The procedure depicted in Figure 18.104.22.168.6-1
is used by data source (e.g. NWDAF or ADRF) to register data profile to DCCF.
An ADRF or NWDAF instance is collecting or has collected data directly, e.g. from collocated NF.
The ADRF or NWDAF requests to register/update data collection profile (Service Operation, Analytics/Data Specification, ADRF ID or NWDAF ID) to DCCF by invoking the Ndccf_ContextManagement_Register
. The registration/ update request can be triggered by the acceptation of subscription for data collection responded by the data source (e.g. collocated NF), it can be before the start of data collection or after the completion of data collection. DCCF determines the data collection status of NWDAF or ADRF based on the Analytics/Data Specification, i.e. DCCF determines whether the required data is being collected or has been collected.
identifies the service used to collect the data or analytics from a Data Source (e.g.: Namf_EventExposure_Subscribe
is the "Service Operation"
specific parameters that identify the collected data (i.e.: Analytics ID(s) / Event ID (s), Target of Analytics Reporting or Target of Event Reporting, Analytics Filter or Event Filter, etc.).
NWDAF ID or ADRF ID specify the ADRF or NWDAF which registers data collection profile.
The DCCF responds to the ADRF or NWDAF with a Ndccf_ContextManagement_Register Response or Ndccf_ContextManagement_Update Response.
To obtain historical data and if the data consumer is configured to be collect data via the DCCF using Ndccf_DataManagement_Subscribe
service operation, the data consumer uses the procedures described in clause 22.214.171.124.2
or clause 126.96.36.199.3
The ADRF or NWDAF requests to delete a registration of data collection or analytics collection to the DCCF by invoking the Ndccf_ContextManagement_Deregister.