Storage of network slice authorization status

A network node, configured to:

• receive, at a first network function, a registration message from a radio access network node to register a user equipment, UE;
• responsive to the registration message, transmit a request for information on whether network slices associated with the UE are subject to Network Slice-Specific Authentication and Authorization, NSSAA;
• responsive to the request, receive a response message including Single-Network Slice Selection Assistance Information, S-NSSAI, information associated with the UE, the S-NSSAI information including NSSAA status information relating to the S-NSSAI information;
• and
• determine whether to initiate an NSSAA procedure with the UE based on the S-NSSAI information.

A network node comprising:

• a processing circuit;
• a network interface coupled to the processing circuit;
• and
• a memory coupled to the processing circuit, wherein the memory comprises computer readable program instructions that, when executed by the processing circuit, cause the network node to perform operations comprising:
• receive, at a first network function, a registration message from a radio access network node to register a user equipment, UE;
• responsive to the registration message, transmit a request for information on whether network slices associated with the UE are subject to Network Slice-Specific Authentication and Authorization, NSSAA;
• responsive to the request, receive a response message including Single-Network Slice Selection Assistance Information, S-NSSAI, information associated with the UE, the S-NSSAI information including NSSAA status information relating to the S-NSSAI information;
• and
• determine whether to initiate an NSSAA procedure with the UE based on the S-NSSAI information.