公开(公告)号：US10419994B2

公开(公告)日：2019-09-17

申请号：US15480539

申请日：2017-04-06

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Yoo Hwa Kang ,  No Ik Park

IPC: H04L12/46 ,  H04L12/66 ,  H04L29/06 ,  H04L29/12 ,  H04W12/02 ,  H04W12/04 ,  H04W36/14 ,  H04W48/00 ,  H04W76/12 ,  H04W84/12 ,  H04W12/00

Abstract: A non-access stratum based access method and a terminal supporting the same. The terminal receives an Internet protocol (IP) address allocated from a first gateway included in a non-3rd generation partnership project (3GPP) access network. In addition, the terminal applies a non-access stratum (NAS) protocol to a first device managing mobility of the terminal through the IP address.

公开(公告)号：US10999888B2

公开(公告)日：2021-05-04

申请号：US16569299

申请日：2019-09-12

Applicant: Electronics and Telecommunications Research Institute

Inventor： Yoo Hwa Kang ,  Changki Kim ,  No Ik Park

IPC: H04W76/30 ,  H04W36/00 ,  H04W28/08 ,  H04W76/32 ,  H04W68/00 ,  H04W88/02 ,  H04W68/02 ,  H04W76/34

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.

公开(公告)号：US10524305B2

公开(公告)日：2019-12-31

申请号：US15937439

申请日：2018-03-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Yoo Hwa Kang ,  Changki Kim ,  No Ik Park

IPC: H04W76/30 ,  H04W36/00 ,  H04W28/08 ,  H04W68/00 ,  H04W88/02 ,  H04W68/02

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.

公开(公告)号：US10595254B2

公开(公告)日：2020-03-17

申请号：US16507594

申请日：2019-07-10

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Yoo Hwa Kang ,  No Ik Park

IPC: H04W36/14 ,  H04W12/00 ,  H04W76/12 ,  H04W48/00 ,  H04L29/06 ,  H04L29/12 ,  H04L12/66 ,  H04W12/04 ,  H04L12/46 ,  H04W84/12

Abstract: A non-access stratum based access method and a terminal supporting the same. The terminal receives an Internet protocol (IP) address allocated from a first gateway included in a non-3rd generation partnership project (3GPP) access network. In addition, the terminal applies a non-access stratum (NAS) protocol to a first device managing mobility of the terminal through the IP address.

公开(公告)号：US10582561B2

公开(公告)日：2020-03-03

申请号：US15937439

申请日：2018-03-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Yoo Hwa Kang ,  Changki Kim ,  No Ik Park

IPC: H04W76/30 ,  H04W36/00 ,  H04W28/08 ,  H04W68/00 ,  H04W88/02 ,  H04W68/02

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.

公开(公告)号：US10542513B2

公开(公告)日：2020-01-21

申请号：US16195210

申请日：2018-11-19

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Yoo Hwa Kang ,  Dongmyoung Kim ,  No Ik Park

IPC: H04W4/00 ,  H04W60/06 ,  H04W60/00

Abstract: A deregistration method of user equipment in a network and user equipment performing the same is disclosed. The user equipment determines whether the user equipment is in a connection management (CM)_CONNECTED state in a non-3GPP access network and initiates a deregistration procedure through the non-3GPP access network if the user equipment is in the CM_CONNECTED state in the non-3GPP access network.

公开(公告)号：US20190007992A1

公开(公告)日：2019-01-03

申请号：US16026432

申请日：2018-07-03

Applicant: Electronics and Telecommunications Research Institute

Inventor： Dongmyoung KIM ,  No Ik Park ,  Yoo Hwa Kang ,  Myung Ki Shin

IPC: H04W76/27 ,  H04W68/02 ,  H04W64/00 ,  H04W8/06

Abstract: Provided is a network triggered service request method performed by an access and mobility management function (AMF) device, the method including receiving a Namf_Communication_N1N2MessageTransfer message from a session management function (SMF) device that receives a data notification message indicating that a user plane function (UPF) device receives downlink data for a protocol data unit (PDU) session and no access network tunnel information is stored for the PDU session; and sending, to an access network, a paging message for a PDU session between the AMF device and a user equipment (UE) based on a PDU session identifier (ID) included in the Namf_Communication_N1N2MessageTransfer message. The UE receiving the paging message from the access network is configured to initiate a service request procedure according to a connection management state of the UE.

公开(公告)号：US11051358B2

公开(公告)日：2021-06-29

申请号：US16569339

申请日：2019-09-12

Applicant: Electronics and Telecommunications Research Institute

Inventor： Yoo Hwa Kang ,  Changki Kim ,  No Ik Park

IPC: H04W76/30 ,  H04W36/00 ,  H04W28/08 ,  H04W76/32 ,  H04W68/00 ,  H04W88/02 ,  H04W68/02 ,  H04W76/34

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.

公开(公告)号：US10917810B2

公开(公告)日：2021-02-09

申请号：US16111489

申请日：2018-08-24

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sun Mi Jun ,  Jae Ho Kim ,  No Ik Park

IPC: H04W28/02 ,  H04W28/10

Abstract: A traffic mobility method between heterogeneous access networks of a wireless communication system includes, as a user equipment (UE) multiply accesses a first access network and a second access network, configuring a first transmission path corresponding to the first access network and a second transmission path corresponding to the second access network with respect to the UE, by a gateway, determining whether traffic mobility is performed on each traffic flow based on a traffic mobility policy of the each traffic flow served to the UE through the first transmission path and a transmission state of the second access network, by a control entity, and changing a transmission path of a traffic flow on which traffic mobility is determined, to the second transmission path from the first transmission path, by the gateway.