Section: 5.30.2.11 UE Mobility support for SNPN
Content: If the UE moves its 3GPP access between SNPN and PLMN, the network selection is performed as specified in TS 23.122[ Non-Access-Stratum (NAS) functions related to Mobile Station (MS) in idle mode ]  [17] and UE performs initial registration as specified in clause 4.2.2.2.2 of TS 23.502[ Procedures for the 5G System (5GS) ]  [3]. NOTE 1: When the UE moves its 3GPP access between SNPN and PLMN, it is up to UE implementation to activate/deactivate SNPN access mode. If the UE moves its 3GPP access between SNPNs, the network selection is performed as specified in TS 23.122[ Non-Access-Stratum (NAS) functions related to Mobile Station (MS) in idle mode ]  [17], then the UE performs initial or mobility registration as specified in clause 4.2.2.2.2 of TS 23.502[ Procedures for the 5G System (5GS) ]  [3]. NOTE 2: When the UE moves its 3GPP access between SNPNs, it is up to UE implementation whether and when to establish again PDU Sessions using existing mechanism. If the UE and network supports equivalent SNPNs, the AMF may provide list of equivalent SNPNs to the UE and NG-RAN. The UE may move its 3GPP access to the SNPN in the list of equivalent SNPNs without performing network selection. A UE supporting equivalent SNPNs gets a new registered SNPN ID during the Registration procedure if serving SNPN is changed.