Method for moving PDU session on non-3GPP to 3GPP access

A chipset mounted on an Access and mobility Management Function (AMF), the chipset comprising:

• at least one processor;
• and
• at least one memory for storing instructions and operably electrically connectable to the at least one processor, wherein the instructions, based on being executed by the at least one processor, perform operations comprising:
• receiving, from a Session Management Function (SMF), a Session Management (SM) context status notify message,
• wherein the SM context status notify message is received based on a failure of a Protocol Data Unit (PDU) session establishment procedure,
• wherein the PDU session establishment procedure is triggered for a handover of a PDU session between a non-3rd Generation Partnership Project (non-3GPP) access and a 3GPP access;
• and
• updating an access type related to the PDU session based on the SM context status notify message.

A device for an Access and mobility Management Function (AMF), the device comprising:

• a transceiver;
• at least one processor;
• and
• at least one memory for storing instructions and operably electrically connectable to the at least one processor,
• wherein the instructions, based on being executed by the at least one processor, perform operations comprising:
• receiving, from a Session Management Function (SMF), a Session Management (SM) context status notify message,
• wherein the SM context status notify message is received based on a failure of a Protocol Data Unit (PDU) session establishment procedure,
• wherein the PDU session establishment procedure is triggered for a handover of a PDU session between a non-3rd Generation Partnership Project (non-3GPP) access and a 3GPP access;
• and
• updating an access type related to the PDU session based on the SM context status notify message.