3GPP 23.501 v20.2.0 — the document's own text
5.4.13.2 Coverage availability information provisioning to the UE
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).
A UE may use satellite coverage availability information for satellite access to support discontinuous coverage operations. Satellite coverage availability information can be provided to a UE by an external server via a PDU Session or SMS. The protocol and format of satellite coverage availability information via PDU session or SMS is not defined in this release of the specification, but some examples on possible information that constitutes the satellite coverage availability information is defined in Annex Q.
NOTE: The satellite coverage availability information provisioned to the UE describes when and where satellite coverage with both service link and feeder link connectivity is expected or not expected to be available in an area.