Method and apparatus for interface management in non-terrestrial network

A method of a first access and mobility management function (AMF) entity, comprising:

• receiving movement path information including information on a time-based location of a non-terrestrial base station from an operation and maintenance center;
• determining a start time of service provision of the non-terrestrial base station for a management area based on the movement path information;
• and
• performing a next generation (NG) setup procedure to establish an NG interface with the non-terrestrial base station based on the determined start time of service provision.

A non-terrestrial base station comprising at least one processor, wherein the at least one processor causes the non-terrestrial base station to perform:

• establishing a stream control transmission protocol (SCTP) association with a first access and mobility management function (AMF) entity;
• receiving, based on the established SCTP association, a next generation (NG) setup command message from the first AMF entity;
• establishing an NG interface with the first AMF entity according to the NG setup command message;
• and
• transmitting an NG setup complete message to the first AMF entity upon completing establishment of the NG interface.