scope:

The present document specifies the use of the 5G System (5GS) considering common functional architecture, procedures and information flows needed to support mission critical services encompassing the common services core architecture.

The corresponding service requirements applied in 3GPP TS 23.280 [3], 3GPP TS 22.179 [11], 3GPP TS 22.280 [12], 3GPP TS 22.281 [13] and 3GPP TS 22.282 [14] also apply here.

The corresponding MC service specific procedures and information flows are defined in TS 23.379 [6], TS 23.281[4], and TS 23.282 [5].

The present document is applicable primarily to mission critical services using 3GPP access (5G NR and/or E-UTRA) and non-3GPP access (WLAN, Satellite and/or wireline) based on the 5GC architecture defined in 3GPP TS 23.501 [7].

The common functional architecture to support mission critical services can be used for public safety applications and for general commercial applications e.g. utility companies and railways.