Architecture

This section depicts how the network function components interact during an N5 Authorization.

The SMF and PCF have a bilateral communication over the N7 interface. The AF sends an N5 Create/Update request to PCF. The PCF performs the N5 Authorization of the request by evaluating the message for the missing media type attribute and consults the value that is assigned to the Bearer-Authorization column in the STG table for the configured status as accept or reject. PCF fetches the STG information from the associated database. PCF communicates the evaluation result to the SMF and AF through REST requests.

The following figure illustrates how the NF interactions happen over the N5 interface.

NF Interactions