Method and wireless device for handling pdu session in 5g mobile communication

A wireless device configured to handle a protocol data unit (PDU) session in a wireless communication system, the wireless device configured to implement an access stratum (AS) layer and a non-access stratum (NAS) layer, and comprising:

• a transceiver;
• at least one processor;
• and
• at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed by the at least one processor, perform operations comprising:
• determining, by the AS layer of the wireless device, whether a user plane for the PDU session is activated or released;
• transferring, by the AS layer and to the NAS layer of the wireless device based on a determination that the user plane for the PDU session is activated, first information indicating that the user plane for the PDU session is activated;
• and
• transferring, by the AS layer and to the NAS layer of the wireless device based on a determination that the user plane for the PDU session is released, second information indicating that the user plane for the PDU session is released.

A wireless device configured to handle a protocol data unit (PDU) session in a wireless communication system, the wireless device configured to implement an access stratum (AS) layer and a non-access stratum (NAS) layer, and comprising:

• a display;
• an input unit;
• a transceiver;
• at least one processor;
• and
• at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed by the at least one processor, perform operations comprising:
• determining, by the AS layer of the wireless device, whether a user plane for the PDU session is activated or released;
• transferring, by the AS layer and to the NAS layer of the wireless device based on a determination that the user plane for the PDU session is activated, first information indicating that the user plane for the PDU session is activated;
• and
• transferring, by the AS layer and to the NAS layer of the wireless device based on a determination that the user plane for the PDU session is released, second information indicating that the user plane for the PDU session is released.