Method for releasing context of user equipment in non-3gpp access network and network entity performing the same
AssigneeElectronics and Telecommunications Research Institute
InventorsYoo Hwa KANG, Changki KIM, No Ik PARK
Life of this patent
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Abstract
A method for releasing a context of a user equipment in a non-3GPP access network and a network entity performing the same are disclosed. In a case in which the UE is a unreachable state, a non-3GPP interworking function (N3IWF) may a UE context release request message to an access and mobility management function (AMF), and may perform protocol data unit (PDU) session user plane de-activation between the AMF, a session management function (SMF), and a user plane function (UPF). In addition, the AMF may transmit a UE context release command message to the N3IWF, and the N3IWF may transmit a UE context release complete message to the AMF.
Claims13
A method for releasing a context of a user equipment (UE) in a non-3GPP access network, the method comprising:
- sending, by a non-3GPP interworking function (N3IWF), a UE context release request message to an access and mobility management function (AMF), when the UE is not reachable,
- sending, by the AMF, a UE context release command message to the N3IWF,
- exchanging, the N3IWF, an internet key exchange (IKE) information exchange message with the UE,
- sending, the N3IWF, a UE context release complete message to the AMF, and
- performing protocol data unit (PDU) session user plane de-activation between the AMF, a session management function (SMF), and a user plane function (UPF).
A method for releasing a context of a user equipment (UE) by a non-3GPP interworking function (N3IWF) communicating with a non-3GPP access, the method comprising:
- detecting that the UE is not reachable,
- sending a UE context release request message to an access and mobility management function (AMF),
- receiving a UE context release command message from the AMF,
- exchanging an internet key exchange (IKE) information exchange message with the UE, and
- sending a UE context release complete message to the AMF.
A first network entity communicating with a non-3GPP access, the first network entity comprising:
- a processor configured to control detecting that an user equipment (UE) is not reachable, sending a UE context release request message to a second network entity, receiving a UE context release command message from the second network entity, exchanging an internet key exchange (IKE) information exchange message with the UE, and sending a UE context release complete message to the second network entity, and
- a network interface configured to communicate with the UE and the network entity.
Dependencies are inferred from the claim text.