3GPP 23.501 v20.2.0 — the document's own text
5.4.10 Support for identification and restriction of using NR satellite access
Taught in 9. Registration, reachability and paging (The 5G system architecture, in depth), 10. Radio, Wi-Fi, cable — every way in (The 5G system architecture, in depth).
Support for NR satellite access is specified in TS 38.300 [27].
Editor's note: TS 38.300 [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 [34]. The PCF can receive the RAT Type for NR satellite access, when applicable, from the AMF using the PCRT on Access Type change specified in clause 6.1.2.5 of TS 23.503 [45] during AM Policy Association Establishment or AM Policy Association Modification procedure and from the SMF using the PCRT on Access Type change specified in clause 6.1.3.5 of TS 23.503 [45] during SM Policy Association Establishment or SM Policy Association Modification procedure.
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 [34].