公开(公告)号：US20200100147A1

公开(公告)日：2020-03-26

申请号：US16613107

申请日：2018-06-05

Applicant: LG ELECTRONICS INC.

Inventor： Myungjune YOUN ,  Hyunsook KIM ,  Jinsook RYU

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

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：US20200092932A1

公开(公告)日：2020-03-19

申请号：US16573996

申请日：2019-09-17

Applicant: LG Electronics Inc.

Inventor： Myungjune YOUN ,  Laeyoung KIM ,  Jaehyun KIM ,  Hyunsook KIM ,  Sangmin PARK

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

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.

公开(公告)号：US20200092758A1

公开(公告)日：2020-03-19

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

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：US20200092710A1

公开(公告)日：2020-03-19

申请号：US16660167

申请日：2019-10-22

Applicant: LG Electronics Inc.

Inventor： Laeyoung KIM ,  Hyunsook KIM ,  Jinsook RYU ,  Sangmin PARK ,  Myungjune YOUN

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

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：US20200077356A1

公开(公告)日：2020-03-05

申请号：US16494240

申请日：2018-03-07

Applicant: LG ELECTRONICS INC.

Inventor： Myungjune YOUN ,  Jinsook RYU

IPC: H04W60/04 ,  H04W8/06 ,  H04W52/02 ,  H04W68/02 ,  H04W76/27

Abstract: In one aspect of the present invention, there is provided an event notification method of an AMF in a wireless communication system. The event notification method includes receiving, from a requester, a subscribe message for a notification subscribe to a mobility event of a UE, wherein the subscribe message includes an identifier (ID) of the UE and an event filter for filtering the mobility event; performing a registration procedure for the UE; and when the mobility event filtered by the event filter happens in the registration procedure, completing the registration procedure of a notification message for the mobility event and then sending the notification message to a SMF, wherein if the subscribe message includes an indicator indicating a maintenance of a connected mode of the UE, the connected mode of the UE is maintained for a predetermined time after the registration procedure is completed.

公开(公告)号：US20190335316A1

公开(公告)日：2019-10-31

申请号：US16348075

申请日：2017-11-07

Applicant: LG Electronics Inc.

Inventor： Hyunsook KIM ,  Laeyoung KIM ,  Myungjune YOUN

IPC: H04W8/08 ,  H04W60/04 ,  H04W12/06 ,  H04W76/11 ,  H04W8/04

Abstract: A disclosure of the present specification provides a method for processing a NAS request message by an MMF node. The method may comprise the steps of: when it is identified that an NAS request message has been received through a second access network, checking whether a first MM context and a first security context are included therein; and acquiring a second security context from an authentication CP node, and generating a second MM context.

公开(公告)号：US20190313473A1

公开(公告)日：2019-10-10

申请号：US16315579

申请日：2017-07-04

Applicant: LG Electronics Inc.

Inventor： Jaehyun KIM ,  Sangmin PARK ,  Jinsook RYU ,  Myungjune YOUN ,  Sungduck CHUN

IPC: H04W76/25 ,  H04W48/04 ,  H04W76/18 ,  H04W48/16 ,  H04W8/08 ,  H04W76/27 ,  H04W48/00

Abstract: Disclosed in the present specification is a method by which a user equipment (UE) performs access control. The method comprises the steps of: allowing a non-access-stratum (NAS) layer of the UE to transfer information on an important service and a NAS signaling request to a radio resource control (RRC) layer, when the important service is required even if access to a cell is currently interrupted or a back-off timer is operated; and allowing the RRC layer to skip or override an inspection for access control on the basis of the information on the important service, wherein, the information on the important service can be set in advance.

公开(公告)号：US20190289506A1

公开(公告)日：2019-09-19

申请号：US16348702

申请日：2017-11-09

Applicant: LG Electronics Inc.

Inventor： Sangmin PARK ,  Jinsook RYU ,  Hyunsook KIM ,  Myungjune YOUN ,  Jaehyun KIM ,  Taehun KIM

IPC: H04W36/00 ,  H04W36/14 ,  H04W8/08 ,  H04W76/27 ,  H04W36/26

Abstract: A user equipment according to the present invention performs a handover from a first system to a second system. When a user equipment receives a command to hand over to the second system, while using a plurality of protocol data unit (PDU) sessions for the same data network (DN) in the first system, the user equipment transmits first session information of a firstPDU session among the plurality of PDU sessions, establishes a packet data network (PDN) connection with the second system, on the basis of the first session information, and maps the first PDU session to the PDN connection. When the user equipment is required to establish a dedicated bearer for a PDU session (second PDU session) other than the first PDU session among the plurality of PDU sessions, the user equipment transmits a bearer generation request message requesting to generate a dedicated bearer for the PDN connection.

公开(公告)号：US20190200264A1

公开(公告)日：2019-06-27

申请号：US16065083

申请日：2017-12-04

Applicant: LG ELECTRONICS INC.

Inventor： Hyunsook KIM ,  Jinsook RYU ,  Sangmin PARK ,  Myungjune YOUN

IPC: H04W36/00 ,  H04W36/32

Abstract: The one disclosure of the present specification proposes a method for managing session. The method may be performed by a session management function, SMF, node and comprise: generating a packet data unit, PDU, session for a user equipment, UE; receiving, from an access and mobility management function, AMF, node, information about the UE; and determining, based on the information, whether to transmit an indication for notifying a user plane function, UPF, node to discard a downlink data for the PDU session of the UE. The determination may be dependent on whether the PDU session corresponds to a first service provided to the UE.

公开(公告)号：US20190191349A1

公开(公告)日：2019-06-20

申请号：US16325845

申请日：2017-08-22

Applicant: LG ELECTRONICS INC.

Inventor： Hyunsook KIM ,  Jinsook RYU ,  Sangmin PARK ,  Myungjune YOUN

IPC: H04W36/14 ,  H04W76/18 ,  H04W60/04 ,  H04W36/00 ,  H04W36/30

CPC classification number: H04W36/14 ,  H04W36/0016 ,  H04W36/0022 ,  H04W36/305 ,  H04W36/34 ,  H04W60/00 ,  H04W60/04 ,  H04W76/18

Abstract: An embodiment of the present description provides a method for performing a fallback operation for a voice call, if a UE performed only a single registration, in an environment in which an N26 interface is not provided between an access and mobility management function (AMF) and a mobility management entity (MME). The method can comprise the steps of: for transmission or reception of a voice call, the UE transmitting a service request message to the AMF; and receiving from the AMF a response message to the service request message. The response message can comprise an indicator which indicates a fallback operation without the N26 interface. The method can comprise a step for transmitting an attach request message, which comprises a PDN connection request message, to the MME on the basis of the indicator.