公开(公告)号：US20210185755A1

公开(公告)日：2021-06-17

申请号：US16980065

申请日：2019-04-01

Applicant: LG ELECTRONICS INC.

Inventor： Seokjung Kim ,  Jian Xu ,  Daewook Byun

IPC: H04W76/19 ,  H04W28/06 ,  H04W80/02 ,  H04W68/00 ,  H04W76/27 ,  H04W76/34

Abstract: A method and apparatus for discarding a buffered data in a wireless communication system is described. A central unit (CU) user plane (UP) of a gNB receives a buffered data discard indication from a CU-control plane (CU-CP) of the gNB, and discards buffered data for a user equipment (UE) based on the buffered data discard indication. Even after discarding the buffered data, UE context is still kept. The CU-CP is a logical node constituting the gNB that hosts a radio resource control (RRC) protocol and a packet data convergence protocol (PDCP)-C protocol, and the CU-UP is a logical node constituting the gNB that hosts a PDCP-U protocol.

公开(公告)号：US11039349B2

公开(公告)日：2021-06-15

申请号：US16064884

申请日：2018-03-23

Applicant: LG ELECTRONICS INC.

Inventor： Jian Xu ,  Daewook Byun ,  Seokjung Kim

IPC: H04W36/00

Abstract: Provided are a method and an apparatus for performing a secondary node change procedure disclosed by a source secondary node in a wireless communication system. A master node receives a secondary node change request message from the source secondary node, transmits a secondary node addition request message to a target secondary node, receives a secondary node addition request confirm message from the target secondary node, and transmits a secondary node change request confirm message to the source secondary node.

公开(公告)号：US10980080B2

公开(公告)日：2021-04-13

申请号：US16312909

申请日：2017-06-21

Applicant: LG Electronics Inc.

Inventor： Daewook Byun ,  Jian Xu ,  Seokjung Kim

IPC: H04W76/27 ,  H04W8/08 ,  H04W24/10 ,  H04W72/04

Abstract: Proposed are a method for reporting an RRC state of a terminal by a base station in a wireless communication system and an apparatus for supporting the same. A method for reporting an RRC state according to an embodiment of the present invention may comprise a step of reporting an RRC state of a terminal to a mobility management (MM).

公开(公告)号：US10893446B2

公开(公告)日：2021-01-12

申请号：US16064796

申请日：2018-01-05

Applicant: LG ELECTRONICS INC.

Inventor： Jian Xu ,  Daewook Byun ,  Seokjung Kim ,  Sunyoung Lee

IPC: H04W36/00 ,  H04W24/10 ,  H04W36/22 ,  H04W36/08 ,  H04W84/04

Abstract: Provided are a method in which a source base station (BS) transmits a Quality of Service (QoS) flow-to-data radio bearer (DRB) mapping rule to a target BS in a wireless communication system, and a device supporting the same. The method may include: receiving, from a user equipment (UE), a measurement result of a target cell; determining the handover of the UE to the target BS on the basis of the measurement result; and transmitting, to the target BS, a handover request message including a QoS flow-to-DRB mapping rule of the source BS.

公开(公告)号：US10805168B2

公开(公告)日：2020-10-13

申请号：US16065021

申请日：2017-07-28

Applicant: LG ELECTRONICS INC.

Inventor： Jian Xu ,  Seokjung Kim ,  Daewook Byun

IPC: H04L12/24 ,  H04W36/08 ,  H04W92/20 ,  H04W8/02 ,  H04W24/10 ,  H04W84/04

Abstract: A new cell specific procedure and/or a mobility procedure may be defined to more efficiently support a network slice function in new radio access technology (NR), which is a part of a 5G communication system. In terms of a radio access network (RAN)-RAN interface, the cell specific procedure comprises that a first RAN node transmits a first indicator related with the slice support of the first RAN node to a second RAN node, and receives from the second RAN node a second indicator related with the slice support of the first RAN node. The mobility procedure comprises that a target RAN node transmits a path change request message including slice-related information to a core network (CN) node, and receives from the CN node a path change response message including at least one of a common control plane function (C-CPF) identifier (ID), a finally selected slice-related ID or U-Plane information.

公开(公告)号：US20200015112A1

公开(公告)日：2020-01-09

申请号：US16495247

申请日：2018-03-21

Applicant: LG Electronics Inc.

Inventor： Seokjung Kim ,  Jian Xu ,  Daewook Byun

IPC: H04W28/02 ,  H04W76/27 ,  H04W48/04 ,  H04W76/34

Abstract: Provided are a method by which a base station controls the access of a terminal, and a device for supporting the same. The method comprises the steps of: receiving, from a core network, information on an RRC connection procedure in which access in an RRC inactive state is restricted; receiving a request for executing the RRC connection procedure from a terminal which is in the RRC inactive state; and transmitting, to the terminal, a message notifying that the requested execution of the RRC connection procedure has been restricted, when the RRC connection procedure requested from the terminal corresponds to the RRC connection procedure in which the access is restricted.

公开(公告)号：US12232025B2

公开(公告)日：2025-02-18

申请号：US17794121

申请日：2021-01-25

Applicant: LG ELECTRONICS INC.

Inventor： Seokjung Kim ,  Jian Xu ,  Daewook Byun

IPC: H04W48/18 ,  H04W48/16 ,  H04W84/04

Abstract: The present disclosure relates to manual closed access group (CAG) selection in wireless communications. According to an embodiment of the present disclosure, a method performed by a central unit (CU) in a wireless communication system comprises: receiving, from a distribution unit (DU), information informing whether to allow a manual closed access group (CAG) selection on a CAG identifier (ID) not included in a list of allowed CAG IDs of a wireless device for each of public land mobile networks (PLMNs); receiving, from an access and mobility management function (AMF), a list of PLMNs supported by the AMF; determining CAG control information informing at least one PLMN for which a manual CAG selection on a CAG ID not included in the list of allowed CAG IDs of the wireless device is allowed, based on the list of PLMNs supported by the AMF and the information received from the DU; and transmitting, to the DU, the CAG control information.

公开(公告)号：US12075482B2

公开(公告)日：2024-08-27

申请号：US17425170

申请日：2020-01-31

Applicant: LG ELECTRONICS INC.

Inventor： Daewook Byun ,  Hongsuk Kim ,  Jian Xu ,  Seokjung Kim

IPC: H04W74/00 ,  H04W74/0833

CPC classification number: H04W74/0833 ,  H04W74/002

Abstract: A method and apparatus for provision of random access channel (RACH) related information for connection failure detection in a new radio access technology (NR) is provided. For example, a first gNB receives, from a wireless device, random access channel (RACH) related information and cell information for a radio link failure (RLF), and transmits, to a second gNB, the RACH related information and the cell information for the RLF. For another example, a gNB central unit (gNB-CU) of a first gNB receives, from a second gNB, RACH related information and cell information for RLF, and transmits, to a gNB distributed unit (gNB-DU) of the first gNB, information for an RACH configuration based on the RACH related information and the cell information for the RLF.

公开(公告)号：US12041493B2

公开(公告)日：2024-07-16

申请号：US17278949

申请日：2019-11-08

Applicant: LG ELECTRONICS INC.

Inventor： Seokjung Kim ,  Jian Xu ,  Daewook Byun

IPC: H04W36/00 ,  H04L5/00 ,  H04W36/08

CPC classification number: H04W36/0069 ,  H04L5/0053 ,  H04W36/0061 ,  H04W36/08

Abstract: A method and apparatus for supporting of inter-gNB handover in higher layer multi-connectivity is provided. A target master node (MN) of an inter-MN handover procedure receives a handover request message including information on a redundancy sequence number (RSN) from a source MN of the inter-MN handover procedure. The information on the RSN informs that a protocol data unit (PDU) session mapped to the RSN is allocated to a secondary node (SN) of the inter-MN handover procedure for redundant transmission.

公开(公告)号：US12015996B2

公开(公告)日：2024-06-18

申请号：US17414422

申请日：2020-01-09

Applicant: LG ELECTRONICS INC.

Inventor： Jian Xu ,  Daewook Byun ,  Seokjung Kim

IPC: H04W72/02 ,  H04W72/23 ,  H04W92/18

CPC classification number: H04W72/02 ,  H04W72/23 ,  H04W92/18

Abstract: A method and apparatus for sidelink resource handling for central unit (CU)-distributed unit (DU) split based vehicle-to-everything (V2X) communication is provided. A gNB central unit (gNB-CU) in a wireless communication system receives, from a wireless device, information related to a radio access technology (RAT) for which a sidelink resource is requested. The gNB-CU transmits, to a gNB distributed unit (gNB-DU), the information related to the RAT for sidelink resource allocation.