School of Specs 23.501v20.2.0

3GPP 23.501 v20.2.0 — the document's own text

6.3.1.1 NF Discovery and Selection aspects relevant with indirect communication

Taught in 6. How one function finds another (The 5G system architecture, in depth), 18. Being served by somebody else's network (The 5G system architecture, in depth), 3. How one function calls another (The 5G system architecture, overview).

For indirect communication shown in Annex E, the SCP performs the following functionalities regarding Network Function and Network Function Service discovery and selection:

  • If the request includes a Routing Binding Indication, the SCP shall route the service request to the requested target as specified in Table 6.3.1.0-1. If the Routing Binding Indication does not exist, the SCP may get the NF Set ID from the NRF or local configuration (if available).
  • If the request recipient had previously provided a Binding Indication, then the request sender shall include a Routing Binding Indication with the same contents in subsequent related requests.