3GPP 23.501 v20.2.0 — the document's own text
R.1 General
Taught in 26. Relays, satellites, femtos and shared networks (The 5G system architecture, in depth).
This annex provides guidance on how 5GS features and capabilities can be used to support Indirect Network Sharing deployment option which is specified in clause 6.21 of TS 22.261 [2].
The Indirect Network Sharing deployment option is described in clause 5.18 and further illustrated in the Figure 5.18.1-2.
In the geographical areas with Indirect Network Sharing deployment, the existing mobility restriction mechanisms specified in clause 5.3.4.1 can be applied. This can be controlled by the UE subscription data related to mobility restriction and Indirect Network Sharing policies in the serving AMF.
For the mobility management, the related procedures (e.g. handover, mobility registration update) specified in clause 4.23 of TS 23.502 [3] can be reused.