CPC H04W 60/06 (2013.01) [H04W 60/005 (2013.01); H04W 88/02 (2013.01)] | 20 Claims |
1. A method of performing access deregistration by an access and mobility management function (AMF) serving a 3rd generation partnership project (3GPP) access and a non-3GPP access, the method comprising:
assigning, to a terminal, a temporary identifier (ID) during a registration procedure over the 3GPP access in a public land mobile network (PLMN), the assigned temporary ID is re-used in a registration procedure over the non-3GPP access for the terminal in the PLMN;
determining to initiate a deregistration procedure over the 3GPP access to deregister the non-3GPP access for the terminal, after the terminal is registered over the 3GPP access and the non-3GPP access; and
transmitting, to a session management function (SMF) based on the determination, a request for releasing a protocol data unit (PDU) session including a non-3GPP access PDU session ID,
wherein all PDU sessions associated with the non-3GPP access are released based on the request.
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