5.30.2.2 Broadcast system information

NG-RAN nodes or Trusted non-3GPP access networks which provide access to SNPNs broadcast the following information:

• One or multiple PLMN IDs;
• List of NIDs per PLMN ID identifying the non-public networks NG-RAN provides access to; and

NOTE 1: It is assumed that an NG-RAN node supports broadcasting a total of twelve NIDs. Further details are defined in TS 38.331 [28].

NOTE°2: The presence of a list of NIDs for a PLMN ID indicates that the related PLMN ID and NIDs identify SNPNs.

• Optionally:
• A human-readable network name per SNPN;

NOTE 3: The human-readable network name per SNPN is only used for manual SNPN selection. If the SNPN supports Localized Service, the human-readable network name of the SNPN can be information related to the Localized Service. The mechanism how human-readable network name is provided (i.e. whether it is broadcasted or unicasted) to the UE is specified in TS 38.331 [28].

• Information, as described in TS 38.300 [27], TS 38.331 [28] and in TS 38.304 [50], to prevent UEs not supporting SNPNs from accessing the cell, e.g. if the cell only provides access to non-public networks;
• An indication per SNPN of whether access using credentials from a Credentials Holder is supported;
• List of supported Group IDs for Network Selection (GINs) per SNPN; and
• An indication per SNPN of whether the SNPN allows registration attempts from UEs that are not explicitly configured to select the SNPN, i.e. UEs that do not have any PLMN ID and NID nor GIN broadcast by the SNPN in the Credentials Holder controlled prioritized lists of preferred SNPNs/GINs.

NOTE 4: Further details (including number of supported GINs per SNPN) are defined in TS 38.331 [28].