Methods for protocol enhancements in 5g nas

A wireless transmit/receive unit (WTRU) comprising:

• an antenna;
• and
• a processor operatively coupled to the antenna;
• the processor and the antenna configured to receive a first message from a network using a first access technology, the first message comprising an indication for the WTRU to reestablish resources for one or more protocol data unit (PDU) sessions using a second access technology;
• the processor configured to determine that a PDU session of the one or more PDU sessions is locally deactivated by the WTRU;
• the processor further configured to determine that the WTRU is in a limited service state associated with the second access technology;
• and
• the processor and the antenna further configured to send a second message using the first access technology, the second message comprising a PDU session status information element (IE) indicating the PDU session is locally deactivated such that the network releases the PDU session.