I.3 Serving network name for standalone non-public networks

33.5013GPPRelease 18Security architecture and procedures for 5G SystemTS

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

I.3.1 General

The identification of standalone non-public networks uses Network Identifier (NID) in addition to PLMN ID. This means the definition of SN Id in clause 6.1.1.4.1 for the derivation of K_SEAF for all authentication methods, CK’ and IK’ for EAP-AKA’, and K_AUSF and (X)RES* for 5G AKA needs modification for standalone non-public networks.

I.3.2 Definition of SN Id for standalone non-public networks

For standalone non-public networks, the SN Id (used in the input for various key/parameter derivations) identifies the serving SNPN.

It is defined as follows:

SN Id = PLMN ID:NID

and is specified in detail in TS 24.501 [35].