3GPP 38.300 v19.3.0 — the document's own text
16.14.4.1 Definitions
A feeder link switchover is the procedure where the feeder link is changed from a source NTN Gateway to a target NTN Gateway for an NTN payload. The feeder link switchover is a Transport Network Layer procedure. Service link switch refers to a change of the serving NTN payload.
Both hard and soft feeder link switchover are supported in NTN payloads.