Section: 28.7.12 NAI used for 5G NSWO
Content: When the UE decides to use 5G NSWO to connect to the WLAN access network using its 5GS credentials but without registration to 5GS, the NAI format for 5G NSWO in non-roaming scenarios is used. See clause 28.7.9.2 for the NAI format for 5G NSWO in roaming scenarios. NOTE: In this case the NAI realm is different than the realm defined for usage during 5G registration via of Trusted non-3GPP access to the 5GCN (see clause 28.7.6) or when N5CW devices access 5GCN via Trusted non-3GPP access to the 5GCN (see clause 28.7.7). See clause 5.42 in 3GPP TS 23.501[ System architecture for the 5G System (5GS) ]  [119]. In the 5G NSWO use case, the UE shall use a NAI in the following format: - For PLMNs: "<username>@5gc-nswo.mnc<MNC>.mcc<MCC>.3gppnetwork.org" - For SNPNs: "<username>@5gc-nswo.nid<NID>.mnc<MNC>.mcc<MCC>.3gppnetwork.org" In the above use cases: a) The entire NAI is constructed by the definition of the username part in clause 28.7.3, along with the realm mentioned in this section. b) the label '5gc-nswo' in the realm part indicates that the NAI is used for 5G NSWO. For PLMNs, <MNC> and <MCC> identify the PLMN, and for SNPNs, <NID>, <MNC> and <MCC> identify the SNPN, to which the UE attempts to connect via the 5G NSWO as described in clause 4.2.15 of 3GPP TS 23.501[ System architecture for the 5G System (5GS) ]  [119]. For an anonymous SUCI in the 5G NSWO use case, assuming that, a MCC=234, MNC=15 and the Routing Indicator 678, the UE shall use the NAI in the following format: type1.rid678.schid0.useridanonymous@5gc-nswo.nid<NID>.mnc015.mcc234.3gppnetwork.org (with username corresponding to "anonymous"), or type1.rid678.schid0.userid@5gc-nswo.nid<NID>.mnc015.mcc234.3gppnetwork.org (with username corresponding to an empty string)