3GPP 23.501 v20.2.0 — the document's own text
6.2.28 NSACF
Taught in 4. What each network function does (The 5G system architecture, in depth), 2. Who does what in the core (The 5G system architecture, overview).
The Network Slice Admission Control Function (NSACF) supports the following functionality:
- Support of monitoring and controlling the number of registered UEs per network slice.
- Support of monitoring and controlling the number of UEs with at least one PDU Session/PDN Connection per network slice in case of EPC interworking.
- Support of monitoring and controlling the number of established PDU Sessions per network slice.
- Support of event based Network Slice status notification and reports to a consumer NF.
- Acting as a Centralized NSACF in PLMNs deploying a centralized architecture as described in clause 5.15.11.0.
- Support of different type of NSAC modes for roaming UEs for the number of UEs per network slice.
- Support of different type of NSAC modes for roaming UEs for the number of PDU Sessions per network slice.
- Acting as a Primary NSACF in PLMNs deploying a hierarchal architecture as described in clause 5.15.11.0.
The details of the NSACF functionality are defined in clause 5.15.11.