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：US12289695B2

公开(公告)日：2025-04-29

申请号：US17499125

申请日：2021-10-12

Applicant: Electronics and Telecommunications Research Institute

Inventor： Changki Kim ,  Yoo Hwa Kang

IPC: H04J3/06 ,  H04W56/00

Abstract: Provided is a method for providing a time synchronization service for an external application service of a 5G system (5GS). A method may include: receiving, by a Network Exposure Function (NEF) from an Application Function (AF), a request for a capability for a 5GS time synchronization service; and in response to the request for the capability, transmitting, by the NEF to the AF, a time synchronization parameter including the capability.

公开(公告)号：US20250106681A1

公开(公告)日：2025-03-27

申请号：US18896601

申请日：2024-09-25

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jeoung Lak HA ,  Changki Kim

IPC: H04W28/02

Abstract: Proposed is an apparatus and method for providing Pack Data Unit (PDU) set information in a wireless communication system. In the wireless communication system, a method for operating a User Plane Function (UPF) includes a process of transmitting PDU Set-related information and information for indicating the PDU Set-related information to a Radio Access Network (RAN) through a GTP-U extension header. The information for indicating the PDU Set-related information includes a PDU type, a QOS Flow Identifier (QFI), a PDU Set Size Indicator (PSSI), an End Data Burst Indicator (EDBI), a PDU Set Sequence Number (PSSN), and a PDU Sequence Number within a PDU Set (PSN). The PDU Set-related information includes at least one of an End PDU of the PDU Set (EPDU), an End of Data Burst (EDB), a PDU Set Importance (PSI), and a PDU Set Size (PSSize).

公开(公告)号：US11178194B2

公开(公告)日：2021-11-16

申请号：US16277302

申请日：2019-02-15

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Changki Kim ,  Yoo Hwa Kang ,  Jeoung Lak Ha

IPC: H04W76/12 ,  H04L29/06 ,  H04W80/02 ,  H04W76/15

Abstract: A packet data unit session establishment method and network entity performing the same is disclosed. User equipment (UE) may establish registration with the core network through a first access network when the UE is registered in a core network through a second access network belonging to the network and a first PDU session is established through the second access network. The UE may transmit a non-access stratum (NAS) message including a PDU session identifier (ID) that is the same as an ID of the first PDU session to an access and mobility management function (AMF).

公开(公告)号：US12218747B2

公开(公告)日：2025-02-04

申请号：US18143144

申请日：2023-05-04

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Changki Kim ,  Jeoung Lak Ha ,  Yoo Hwa Kang ,  Seung Han Choi

IPC: G06F15/173 ,  H04J3/06 ,  H04L7/00 ,  H04L41/0894

Abstract: An apparatus and method for directly exposing, by user plane function/network side-time sensitive networking translator (UPF/NW-TT), event result information to time sensitive networking (TSN) or time sensitive communication time synchronization function (TSCTSF) through service interface (Nupf) in wireless communication system. A method of operating event processing for TSN or TSC includes: when policy control function (PCF) performs TSC event subscription, receiving TSC management and control information for direct reporting notification of event result from TSN-application function or TSCTSF and transmitting the TSC management and control information to session management function (SMF); regenerating the TSC management and control information and transmitting the regenerated TSC management and control information to UPF/NW-TT through N4 interface; and receiving the TSC management and control information from SMF, and when a corresponding event occurs, transmitting the TSC management information including the event result to a target in the control information through SBI.

公开(公告)号：US11895528B2

公开(公告)日：2024-02-06

申请号：US17483222

申请日：2021-09-23

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jeoung Lak Ha ,  Yoo Hwa Kang ,  Changki Kim

IPC: H04W28/02 ,  H04W28/24

CPC classification number: H04W28/0268 ,  H04W28/24

Abstract: Provided is a method of creating a QoS flow for a time synchronization protocol in a wireless communication network. A method of creating a QoS flow for a time synchronization protocol in a wireless communication network includes: receiving, by a Session Management Function (SMF), the PTP profile information from the UE, together with at least one of a DNN, a S-NSSAI information and a session ID for a Time Sensitive Communication (TSC) service; setting, by the SMF, a PCCrule of the QoS flow for the time synchronization protocol; providing, by the SMF, the QoS flow and a SDF filter information for the QoS flow to a User Plane Function (UPF); and providing, by the SMF, the QoS flow and a QoS rule filter to an Access and Mobility Management Function (AMF).

公开(公告)号：US11646810B2

公开(公告)日：2023-05-09

申请号：US17517762

申请日：2021-11-03

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Yoo Hwa Kang ,  Changki Kim ,  Taesik Cheung

IPC: H04W56/00 ,  H04J3/06 ,  H04L41/0816

CPC classification number: H04J3/0685 ,  H04L41/0816 ,  H04W56/0015

Abstract: Provided are a method for performing port configuration of a 5G system (5GS) for providing a time synchronization service, and a network entity performing the same. A method for performing port configuration may include: when a grandmaster (GM) is determined to be a Time Sensitive Networking (TSN) GM outside the 5GS, performing, by a Network Exposure Function (NEF), port configuration of the 5GS in a Best Master Clock Algorithm (BMCA) scheme; and when the GM is determined to be a 5GS GM inside the 5GS, or the TSN GM outside the 5GS that does not support the BMCA, performing, by the NEF, port configuration of the 5GS in an external port configuration scheme.

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.