How it Works

SMF selects NFs, such as PCF, CHF, UDM, and AMF through the static configuration or NRF-based dynamic selection. In both these options, the messaging includes the slice information that is used in those interfaces.

SMF performs the following tasks:

  • Register slice with NRF.

  • Receive slice information on the N11 and N10 interfaces.

  • Use slice for peer NF discovery and UPF selection.

  • Send slice information on the N7 and N40 interfaces.