User equipment (UE) and communication control method
View Patent ↗The present invention provides a communication means that enables use of a function for providing connectivity to a local area data network (LADN) in a 5G system (5GS). Furthermore, the present invention provides a communication means that enables use of a function for providing connectivity to an LADN between a user equipment and a network when the use of the function for providing connectivity to an LADN is enabled.
1. A user equipment (UE), comprising:
a storage unit configured to store local area data network (LADN) information;
a transceiving unit configured to receive a registration accept message from an access and mobility management function (AMF) in a registration procedure for mobility and registration update; and
a control unit, wherein:
when the AMF does not include the LADN information in the registration accept message in the registration procedure, the control unit is configured to:
delete the stored LADN information,
recognize that the UE is located outside an LADN service area of an LADN, and
initiate a UE-requested protocol data unit (PDU) session release procedure to request a network to release a PDU session for the LADN.
2. A communication control method for a user equipment (UE), the communication control method comprising:
storing local area data network (LADN) information; and
receiving a registration accept message from an access and mobility management function (AMF) in a registration procedure for mobility and registration update, wherein:
when the AMF does not include the LADN information in the registration accept message in the registration procedure, the communication control method further comprises:
deleting the stored LADN information,
recognizing that the UE is located outside an LADN service area of an LADN, and
initiate a UE-requested protocol data unit (PDU) session release procedure to request a network to release a PDU session for the LADN.