PDU Session Handover

An apparatus, comprising:

• a memory;
• and
• a processor in communication with the memory and configured to:
• detect a mobility condition while connected to a first radio access network (RAN);
• determine to transfer one or more on-going protocol data unit (PDU) sessions from the first RAN to a second RAN based on detection of the mobility condition, wherein the first RAN supports one of 3GPP access or non-3GPP access, and wherein the second RAN supports the other one of 3GPP access and non-3GPP access;
• and
• transmit, in response to determining to transfer the one or more on-going PDU sessions, an allowed PDU session status information element (IE) to a core access and mobility management function (AMF).

A core access and mobility management function (AMF), comprising:

• a memory;
• and
• a processor in communication with the memory and configured to:
• receive, from a user equipment device (UE), an allowed PDU session status information element (IE) based on a mobility condition occurring at the UE, wherein the allowed PDU session status IE indicates transfer of one or more on-going protocol data unit (PDU) sessions from a first radio access network (RAN) to a second RAN, wherein the first RAN supports one of 3GPP access or non-3GPP access, and wherein the second RAN supports the other one of 3GPP access and non-3GPP access;
• and
• forward, to a user plane function (UPF), the allowed PDU session status IE, wherein forwarding the allowed PDU session status IE triggers establishment of user plane resources on the second RAN for the one or more on-going PDU sessions via the UPF.