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：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：US11184838B2

公开(公告)日：2021-11-23

申请号：US16623757

申请日：2018-06-18

Applicant: LG ELECTRONICS INC.

Inventor： Sangmin Park ,  Jinsook Ryu ,  Hyunsook Kim

IPC: H04W60/00 ,  H04W48/16 ,  H04W8/08 ,  H04W68/00 ,  H04W80/10

Abstract: A method for registering a terminal of an access and mobility management function (AMF) in a wireless communication system, according to one aspect of the present invention, comprises the steps of: receiving, from a terminal, a registration request message requesting registration of the terminal; and transmitting, to the terminal, a registration response message in response to the registration request message, wherein the registration request message may include: a session management (SM) message for requesting the establishment of a packet data unit (PDU) session for the terminal; and an indicator for indicating whether the establishment of the PDU session is essential.

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：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：US10736171B2

公开(公告)日：2020-08-04

申请号：US15565568

申请日：2016-04-18

Applicant: LG ELECTRONICS INC.

Inventor： Youngdae Lee ,  Jaewook Lee ,  Sunghoon Jung ,  Jinsook Ryu

IPC: H04W76/28 ,  H04W76/20 ,  H04W52/02 ,  H04W76/34 ,  H04W28/02 ,  H04W72/12

Abstract: A method and apparatus for transmitting an uplink indication for extended discontinuous reception (eDRX) in a wireless communication system is provided. A user equipment (UE) detects that an event related to eDRX occurs, and transmits an uplink indication related to eDRX to a network. When the event related to eDRX is that an eDRX timer expires or an eDRX command indicating stop of eDRX is received, the uplink indication may indicate stop of eDRX. When the event related to eDRX is that no uplink data is to be transmitted, the uplink indication may indicate start of eDRX.