公开(公告)号：US11240719B2

公开(公告)日：2022-02-01

申请号：US16765463

申请日：2018-11-16

Applicant: LG ELECTRONICS INC.

Inventor： Sangmin Park ,  Taehun Kim ,  Myungjune Youn ,  Hyunsook Kim ,  Jinsook Ryu

IPC: H04W36/00 ,  H04W36/12 ,  H04W76/34 ,  H04W76/22

Abstract: According to one aspect of the present invention, a method for supporting a user equipment (UE) handover of a target (T)-access and mobility management function (AMF) in a wireless communication system may comprise the steps of: receiving a UE context creation request message from a source (S)-AMF, wherein the UE context creation request message includes packet data unit (PDU) session identifiers (ID) as a handover target and single (S)-network slice selection assistance information (NSSAI) corresponding to each PDU session ID; determining whether the corresponding S-NSSAI is valid in the T-AMF; and sending, to a session management function (SMF), a PDU session update session management (SM) context request message only for a PDU session ID that corresponds to the S-NSSAI determined to be valid according to the determination result, out of the PDU session IDs.

公开(公告)号：US20210368576A1

公开(公告)日：2021-11-25

申请号：US16970769

申请日：2019-02-15

Applicant: LG ELECTRONICS INC.

Inventor： Laeyoung Kim ,  Myungjune Youn

IPC: H04W76/25 ,  H04W8/08 ,  H04W68/00

Abstract: A signal transmission and reception method by a session management function (SMF) in a wireless communication system according to an embodiment of the present invention comprises the steps of: the SMF determining whether or not a protocol data unit (PDU) session is to be activated; and the SMF transmitting a message comprising a session management (SM) message to an access and mobility management function (AMF). The PDU session is a PDU session which should be activated by means of a user equipment (UE) which received the SM message. The message comprising the SM message comprises information for activating the PDU session by means of the AMF.

公开(公告)号：US11184808B2

公开(公告)日：2021-11-23

申请号：US16690732

申请日：2019-11-21

Applicant: LG Electronics Inc.

Inventor： Myungjune Youn ,  Hyunsook Kim ,  Laeyoung Kim ,  Jinsook Ryu

IPC: H04W36/00 ,  H04W92/02 ,  H04W8/02 ,  H04W36/14 ,  H04W60/06 ,  H04W60/00

Abstract: According to an aspect of the present invention, there is provided an interworking method between networks of a user equipment (UE) in a wireless communication system, including: performing a first interworking procedure for changing a network of the UE from a 5-generation core network (5GC) network to an evolved packet core (EPC) network, wherein, when an interface between the 5GC and the EPC networks does not exist, the performing of the first interworking procedure includes: receiving a first indication from an access and mobility management function (AMF) of the 5GC network; and performing a handover attach procedure in the EPC network based on the first indication.

公开(公告)号：US11096037B2

公开(公告)日：2021-08-17

申请号：US16064942

申请日：2018-04-26

Applicant: LG Electronics Inc.

Inventor： Laeyoung Kim ,  Hyunsook Kim ,  Jinsook Ryu ,  Sangmin Park ,  Myungjune Youn

IPC: H04W8/10 ,  H04W8/06 ,  H04W36/14 ,  H04W60/06 ,  H04W88/14

Abstract: In one embodiment of the present invention, a method for enabling a UDM (Unified Data Management) to perform a registration related procedure of an AMF (Access and Mobility Management Function) in a wireless communication system comprises the steps of: receiving, by the UDM, a message related to serving AMF registration of a UE, which includes access type information and ID (Identity) information, from a first AMF; transmitting, by the UDM, a deregistration related message to a second AMF when the second AMF exists, wherein the second AMF is registered as a serving AMF of the UE and related to the access type information.

公开(公告)号：US20210250788A1

公开(公告)日：2021-08-12

申请号：US16981420

申请日：2020-06-18

Applicant: LG ELECTRONICS INC.

Inventor： Seokjung Kim ,  Laeyoung Kim ,  Jian Xu ,  Daewook Byun ,  Myungjune Youn

IPC: H04W24/04 ,  H04W76/11 ,  H04W76/15 ,  H04W60/04

Abstract: One disclosure of the present specification provides a method for supporting redundant protocol data unit (PDU) sessions. The method may be performed by a unified data management (UDM) node and comprise: receiving, from a first session management function (SMF) node, a first message including a first redundancy sequence number (RSN) which is allocated by the first SMF node for managing a first PDU session and an identifier of the first PDU session; transmitting, to a second SMF node for managing a second PDU session, a second message including the first RSN and a PDU session pair ID, which is identical to the identifier of the first PDU session; and receiving, from the second SMF node, a third message including a second RSN which is allocated by the second SMF node and an identifier of the second PDU session. The second PDU session may be duplication of the first PDU session.

公开(公告)号：US10932219B2

公开(公告)日：2021-02-23

申请号：US16685269

申请日：2019-11-15

Applicant: LG ELECTRONICS INC.

Inventor： Myungjune Youn ,  Laeyoung Kim ,  Jinsook Ryu

IPC: H04W4/00 ,  H04W60/06 ,  H04W76/30 ,  H04W8/20 ,  H04W68/00 ,  H04W8/18 ,  H04W36/14 ,  H04W76/32

Abstract: An aspect of the present invention relates to a UE-initiated de-registration method by an AMF in a wireless communication system, and comprises the steps of: receiving, from UE, a de-registration request message that requests de-registration, wherein the de-registration request message includes de-registration type information and first access type information indicating a target access to which the de-registration is to be applied; requesting, when the UE has an established protocol data unit (PDU) session through the target access, an SMF to release the established PDU session; and transmitting a de-registration accept message to the UE depending on the de-registration type.

公开(公告)号：US10772034B2

公开(公告)日：2020-09-08

申请号：US16086293

申请日：2017-03-30

Applicant: LG ELECTRONICS INC.

Inventor： Sungduck Chun ,  Jaehyun Kim ,  Taehun Kim ,  Hyunsook Kim ,  Sangmin Park ,  Myungjune Youn

IPC: H04W48/00 ,  H04W48/16 ,  H04W48/08 ,  H04W48/18 ,  H04W76/27 ,  H04W76/10 ,  H04W48/12 ,  H04W88/10

Abstract: A core network to which a cell of a base station can be connected may not be specified to be one. For example, a cell may be connected to an EPC, may be connected to a next-generation core network, or may be connected to both an EPC and a next-generation core network. The base station may transmit core network information relating to a core network to which the cell is connected, on the cell. A user equipment may determine whether to camp on the cell on the basis of the core network information.

公开(公告)号：US10716159B2

公开(公告)日：2020-07-14

申请号：US16327724

申请日：2017-07-31

Applicant: LG Electronics Inc.

Inventor： Hyunsook Kim ,  Laeyoung Kim ,  Sangmin Park ,  Myungjune Youn

IPC: H04W76/16 ,  H04W88/06 ,  H04W48/14 ,  H04W48/18 ,  H04W60/00

Abstract: A method for a user equipment (UE) connecting to a network includes: if second connection is to be executed by means of a second access, determining whether or not first connection has been previously executed by means of a first access; and, if the first connection by means of the first access has been executed and the second connection by means of the second access is determined to be an addition, transmitting a connection request message comprising identification information of a control plane (CP) function node. The identification information of the control plane (CP) function node could have been obtained during the first connection by means of the first access. Both the first connection by means of the first access and the second connection by means of the second access can be managed by means of the control plane (CP) function node.

公开(公告)号：US10708830B2

公开(公告)日：2020-07-07

申请号：US16613107

申请日：2018-06-05

Applicant: LG ELECTRONICS INC.

Inventor： Myungjune Youn ,  Hyunsook Kim ,  Jinsook Ryu

IPC: H04W36/00 ,  H04W36/14 ,  H04W36/04

Abstract: A disclosed feature of the present specification provides a method for a source cell determining a handover of a packet data unit (PDU) session. The method may include a step of determining a target cell or target next generation radio access network (NG-RAN) based on a measurement report by a terminal. A handover region list can additionally be considered in the target cell or target NG-RAN determination step. The method may include a step of transmitting a handover request message that does not include context with respect to the PDU session to the target cell or target NG-RAN, based on the handover region list, if it is confirmed that the determined target cell or target NG-RAN cannot serve for the PDU session.

公开(公告)号：US10687300B2

公开(公告)日：2020-06-16

申请号：US16065075

申请日：2017-11-22

Applicant: LG ELECTRONICS INC.

Inventor： Myungjune Youn ,  Laeyoung Kim ,  Jinsook Ryu

IPC: H04W4/00 ,  H04W60/06 ,  H04W76/30 ,  H04W8/20 ,  H04W68/00 ,  H04W8/18 ,  H04W36/14

Abstract: An aspect of the present invention relates to a UE-initiated de-registration method by an AMF in a wireless communication system, and comprises the steps of: receiving, from UE, a de-registration request message that requests de-registration, wherein the de-registration request message includes de-registration type information and first access type information indicating a target access to which the de-registration is to be applied; requesting, when the UE has an established protocol data unit (PDU) session through the target access, an SMF to release the established PDU session; and transmitting a de-registration accept message to the UE depending on the de-registration type.