Section: 5.4.10 Support for identification and restriction of using NR satellite access
Content: Support for NR satellite access is specified in TS 38.300[ NR; NR and NG-RAN Overall description; Stage-2 ]  [27]. Editor's note: TS 38.300[ NR; NR and NG-RAN Overall description; Stage-2 ]  [27] not yet updated by RAN groups. The AMF determines the RAT Type for NR satellite access, i.e. NR(LEO), NR(MEO), NR(GEO) and NR(OTHERSAT). When the UE is accessing NR using satellite access, an indication is provided in N2 interface indicating the type of NR satellite access, as defined in TS 38.413[ NG-RAN; NG Application Protocol (NGAP) ]  [34]. Editor's note: Further details on what type of satellite platforms OTHERSAT includes is FFS and to be aligned with RAN WG3. The serving PLMN can enforce mobility restrictions for NR satellite access as specified in clause 5.3.4.1. In order to enable efficient enforcement of Mobility Restrictions, cells of each NR satellite RAT Type (NR(LEO), NR(MEO), NR(GEO) or NR(OTHERSAT)) need to be deployed in TAs different from TAs for other NR satellite RAT Types as well as different from TAs supporting terrestrial access RAT Types. The AMF may initiate deregistration of the UE when an N2 UE Context Release Request is received with cause value indicating that the UE is not in PLMN serving area, as specified in TS 38.413[ NG-RAN; NG Application Protocol (NGAP) ]  [34].