公开(公告)号：US12218985B2

公开(公告)日：2025-02-04

申请号：US17753378

申请日：2020-09-08

Applicant: LG ELECTRONICS INC.

Inventor： Myungjune Youn ,  Sehee Lee ,  Sungduck Chun ,  Hyunsook Kim ,  Laeyoung Kim ,  Sangmin Park

IPC: H04W36/00 ,  H04L65/1016 ,  H04L65/1069 ,  H04W36/32 ,  H04W36/14

Abstract: Provided in one embodiment of the present specification is a method for user equipment (UE) for an Internet protocol multimedia subsystem (IMS) voice session. The method can comprise the steps of: establishing an EMS voice session by using a non 3GPP interworking function (N3IWF) or an enhanced packet data gateway (ePDG) through non-3rd generation partnership project (3GPP) access; determining that voice is not supported on a current NG-RAN on the basis of that the UE must moves the IMS voice session to a 3GPP access; and handing over a protocol data unit (PDU) session for the IMS voice session of the non-3GPP access to an evolved packet core (EPC) of the 3GPP access on the basis of the determination.

公开(公告)号：US11812509B2

公开(公告)日：2023-11-07

申请号：US17753018

申请日：2020-08-27

Applicant: LG ELECTRONICS INC.

Inventor： Sangmin Park ,  Laeyoung Kim ,  Myungjune Youn

IPC: H04W8/24 ,  H04W60/04 ,  H04W4/40 ,  H04W88/04

CPC classification number: H04W8/245 ,  H04W60/04 ,  H04W4/40 ,  H04W88/04

Abstract: One disclosure of the present specification provides a method for performing, by relay UE, communication related to a configuration update. The method comprises the steps of: receiving, from a network node, a configuration update command message including information requesting to perform a registration procedure; and transmitting, to the network node, a response message to the configuration update command message, wherein the response message includes information requesting to maintain a NAS signaling connection between the relay UE and the network node.

公开(公告)号：US11812490B2

公开(公告)日：2023-11-07

申请号：US16797711

申请日：2020-02-21

Applicant: LG Electronics Inc.

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

IPC: H04W76/20 ,  H04W48/04

CPC classification number: H04W76/20 ,  H04W48/04

Abstract: A method performed by a terminal operating in a wireless communication system. Based on that the terminal is located in a non-allowed area, and based on the terminal having a pending uplink signaling to inform a change in a Packet Switch (PS) data off status of the terminal, the terminal transmits a service request message to a network node. The service request message includes service type information that is related to the change in the PS data off status of the terminal. The terminal then receives, from the network node, a response message to the service request message.

公开(公告)号：US11758614B2

公开(公告)日：2023-09-12

申请号：US18093601

申请日：2023-01-05

Applicant: LG Electronics Inc.

Inventor： Sangmin Park ,  Sungduck Chun ,  Hyunsook Kim

IPC: H04M11/04 ,  H04W76/50 ,  H04W8/06

CPC classification number: H04W76/50 ,  H04W8/06

Abstract: Provided are a method for adjusting timer T when disaster roaming occurs, and a device supporting same. When a disaster condition is applied to a home public land mobile network (HPLMN), a user equipment (UE) performs registration with a disaster roaming PLMN. When the registration with the disaster roaming PLMN is performed, a timer for periodically searching for the HPLMN does not operate, and the HPLMN is not searched while the timer does not operate. In addition, the UE re-operates the timer on the basis of the disaster condition no longer being applied to the HPLMN or the UE leaving a disaster area.

公开(公告)号：US11751281B2

公开(公告)日：2023-09-05

申请号：US18093598

申请日：2023-01-05

Applicant: LG Electronics Inc.

Inventor： Sangmin Park ,  Sungduck Chun ,  Hyunsook Kim

IPC: H04W76/50

CPC classification number: H04W76/50

Abstract: Provided are a method for supporting service continuity when a disaster situation ends, and a device supporting same. A user equipment (UE) receives, from a disaster roaming PLMN, a configuration update command message including information indicating that a disaster condition of a home PLMN (HPLMN) has ended. The UE waits until a service that is being received from the disaster roaming PLMN ends, and performs, after the service that is being received from the disaster roaming PLMN ends, a procedure of deregistration from the disaster roaming PLMN on the basis of information indicating that the disaster condition of the HPLMN has ended.

公开(公告)号：US11606734B2

公开(公告)日：2023-03-14

申请号：US17573042

申请日：2022-01-11

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：US11523319B2

公开(公告)日：2022-12-06

申请号：US16065120

申请日：2018-01-09

Applicant: LG ELECTRONICS INC.

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

IPC: H04W36/14 ,  H04W76/12

Abstract: It is disclosed a method for managing a PDU session in a wireless communication system and an apparatus for supporting the same. Particularly, a method for performing handover of a User Equipment (UE) performed by a source Radio Access Network (RAN) that includes a processor, a memory and a communication module in a wireless communication system may include determining to initiate handover to a target RAN; and transmitting a Handover Required message to a source Access and Mobility Management Function (AMF), and the handover is a handover in a case that there is no interface between the RANs or AMF change is required, and the Handover Required message includes a PDU session Identifier (ID) of an activated Protocol Data Unit (PDU) session.

公开(公告)号：US11463929B2

公开(公告)日：2022-10-04

申请号：US16650831

申请日：2018-09-28

Applicant: LG ELECTRONICS INC.

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

IPC: H04W36/14 ,  H04W36/00

Abstract: An embodiment of the present invention relates to a method for an access and mobility management function (AMF) transmitting and receiving a signal related to a handover from 5GS to an evolved packet system (EPS) of a user equipment (UE) in a wireless communication system the method comprising a step in which the AMF receives a handover required message from a next-generation radio access network (NG-RAN); a step in which the AMF requests a session management (SM) context to a packet data network gateway+session management function (PGW+SMF); a step of receiving an SM context from the PGW+SMF; and a step in which the AMF transmits a handover command to the NG-RAN, wherein the SM context request is for a PDU session associated with 3GPP access among a plurality of protocol data unit (PDU) sessions.

公开(公告)号：US11457403B2

公开(公告)日：2022-09-27

申请号：US17041188

申请日：2019-02-07

Applicant: LG ELECTRONICS INC.

Inventor： Jaehyun Kim ,  Myungjune Youn ,  Sangmin Park ,  Jinsook Ryu

IPC: H04W4/00 ,  H04W48/18 ,  H04W76/20 ,  H04W76/18 ,  H04W48/08 ,  H04W84/04

Abstract: Disclosed in the present specification is a method by which a user equipment (UE) performs access control. The method can comprise the steps of: transmitting a protocol data unit (PDU) session establishment or modification request message; and receiving a PDU session establishment or modification rejection message. The rejection message can comprise information on a backoff timer and session network slice selection assistance information (S-NSSAI). The method can comprise the steps of: driving the backoff timer while being linked with the S-NSSAI; and performing access control on the basis of the S-NSSAI.

公开(公告)号：US11350475B2

公开(公告)日：2022-05-31

申请号：US16926185

申请日：2020-07-10

Applicant: LG Electronics Inc.

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

IPC: H04W76/16 ,  H04W76/30 ,  H04W76/20 ,  H04W80/02

Abstract: Systems and techniques for handling a protocol data unit (PDU) session by a wireless device implementing an access stratum (AS) layer and a non-access stratum (NAS) layer in a wireless communication system. An example technique includes determining, by the AS layer of the wireless device, whether a user plane for the PDU session is activated or released; transferring, by the AS layer and to the NAS layer of the wireless device based on a determination that the user plane for the PDU session is activated, first information indicating that the user plane for the PDU session is activated; and transferring, by the AS layer and to the NAS layer of the wireless device based on a determination that the user plane for the PDU session is released, second information indicating that the user plane for the PDU session is released.