Method and apparatus for managing equivalent stand-alone non-public network as hosting network in a wireless communication system

A method performed by a user equipment (UE) in a wireless communication system, the method comprising:

• transmitting, to an access and mobility management function (AMF) entity of a first stand-alone non public network (SNPN), a registration request message;
• receiving, from the AMF entity of the first SNPN, a registration accept message including information for a list of equivalent SNPNs;
• selecting a second SNPN;
• and
• initiating a mobility registration update from the first SNPN to the second SNPN, in case that the first SNPN and the second SNPN are included in the list of equivalent SNPNs.

A method performed by an access and mobility management function (AMF) entity in a wireless communication system, the method comprising:

• receiving, from a user equipment (UE), a registration request message for a first stand-alone non public network (SNPN);
• and
• transmitting, to the UE, a registration accept message including information for a list of equivalent SNPNs,
• wherein, in case that the first SNPN and a second SNPN are included in the list of equivalent SNPNs, a mobility registration update is initiated from the first SNPN to the second SNPN.

A user equipment (UE) in a wireless communication system, the UE comprising:

• at least one transceiver;
• at least one processor communicatively coupled to the at least one transceiver;
• and
• at least one memory, communicatively coupled to the at least one processor, storing instructions executable by the at least one processor individually or in any combination to cause the UE to:
• transmit, to an access and mobility management function (AMF) entity of a first stand-alone non public network (SNPN), a registration request message,
• receive, from the AMF entity of the first SNPN, a registration accept message including information for a list of equivalent SNPNs,
• select a second SNPN, and
• initiate a mobility registration update from the first SNPN to the second SNPN, in case that the first SNPN and the second SNPN are included in the list of equivalent SNPNs.

An access and mobility management function (AMF) entity in a wireless communication system, the AMF entity comprising:

• at least one processor;
• and
• at least one memory, communicatively coupled to the at least one processor, storing instructions executable by the at least one processor individually or in any combination to cause the network entity to:
• receive, from a user equipment (UE), a registration request message for a first stand-alone non public network (SNPN), and
• transmit, to the UE, a registration accept message including information for a list of equivalent SNPNs,
• wherein, in case that the first SNPN and a second SNPN are included in the list of equivalent SNPNs, a mobility registration update is initiated from the first SNPN to the second SNPN.