| CPC H04W 60/04 (2013.01) [H04W 60/06 (2013.01); H04W 76/25 (2018.02); H04W 84/042 (2013.01)] | 12 Claims |

|
1. A method performed by a user equipment (UE) in a wireless communication system, the method comprising:
transmitting, to an access and mobility management function (AMF), a registration request message for mobility or periodic registration update; and
receiving, from the AMF, a de-registration request message for a de-registration procedure, before a registration procedure based on the registration request message for the mobility or the periodic registration update has been completed,
wherein, in case that a specific cause value is included in the de-registration request message, the registration procedure for the mobility or the periodic registration update is progressed and the de-registration procedure is aborted, and
wherein the specific cause value is at least one of a 5th generation system mobility management (5GMM) cause value #11, #12, #13 or #15.
|