A Non-Public Network (NPN) is a 5GS deployed for non-public use, see TS 22.261, clause 6.25
. An NPN may be deployed as:
a Stand-alone Non-Public Network (SNPN), i.e. operated by an NPN operator and not relying on network functions provided by a PLMN, or
a Public network integrated NPN, i.e. a non-public network deployed with the support of a PLMN.
SNPN 5GS deployments are based on the architecture depicted in clause 4.2.3, the architecture for 5GC with untrusted non-3GPP access (Figure 126.96.36.199.1-1) for access to SNPN services via a PLMN (and vice versa) and the additional functionality covered in clause 5.30.2.
Interworking with EPS is not supported for SNPN.
Public network integrated NPNs can be enabled using network slicing (see Annex D).