公开(公告)号：US20220015063A1

公开(公告)日：2022-01-13

申请号：US17305360

申请日：2021-07-06

Applicant: LG ELECTRONICS INC.

Inventor： Daewook BYUN ,  Jian XU ,  Seokjung KIM

IPC: H04W72/00

Abstract: A method and apparatus for paging for multicast and broadcast service in a wireless communication system is provided. A Distributed Unit (DU) of a Radio Access Network (RAN) node may receive, from a central unit (CU) of the RAN node, a service identity for a Multicast and/or Broadcast (MB) service. A MB session may be set for the MB service. A DU of a RAN node may transmit, to multiple User Equipments (UEs) in Connection Management (CM)-IDLE state, the service identity of the MB service. The multiple UEs may have joined to the MB session. A DU of a RAN node may receive, from at least one UE among the multiple UEs, an RRC message to request the MB service. A DU of a RAN node may forward the RRC message to the CU of the RAN node.

公开(公告)号：US20210235337A1

公开(公告)日：2021-07-29

申请号：US17053305

申请日：2019-06-20

Applicant: LG ELECTRONICS INC.

Inventor： Daewook BYUN ,  Hongsuk KIM ,  Jian XU ,  Seokjung KIM

IPC: H04W36/00 ,  H04W36/30 ,  H04W76/19

Abstract: A method and apparatus for providing beam related information for connection failure detection in a wireless communication system is provided. In case that radio link failure (RLF) occurs due to too late handover, too early handover or handover to wrong cell, a gNB in which a user equipment (UE) attempts to re-establish or establish a radio resource control (RRC) connection provides RLF related information with beam related information to a gNB at which RLF happened.

公开(公告)号：US20200383164A1

公开(公告)日：2020-12-03

申请号：US16635463

申请日：2018-07-30

Applicant: LG Electronics Inc.

Inventor： Seokjung KIM ,  Daewook BYUN ,  Jian XU

IPC: H04W76/19 ,  H04W76/27 ,  H04W76/34 ,  H04W76/18

Abstract: Provided are a method for resuming, by a distribution unit (DU) of a base station, a radio resource control (RRC) connection in a wireless communication system, and an apparatus for supporting the same. The method may comprise the steps of: receiving, from a terminal, an RRC connection resume request message; transmitting, to a central unit (CU) of the base station, an initial uplink (UL) RRC message transfer message including the RRC connection resume request message; receiving, from the CU, a UE context setup request message including a list of radio bearers to be set up; and transmitting, to the CU, the UE context setup response message including a list of established radio bearers.

公开(公告)号：US20200322847A1

公开(公告)日：2020-10-08

申请号：US16908513

申请日：2020-06-22

Applicant: LG Electronics Inc.

Inventor： Daewook BYUN ,  Hongsuk KIM ,  Jian XU ,  Seokjung KIM

IPC: H04W36/00 ,  H04W36/14

Abstract: A method and apparatus for enhancing a handover procedure for supporting conditional handover in a wireless communication system. A source base station (e.g. source gNB/eNB) receives a message informing that a wireless device is handed over from the source base station to a target base station (e.g. target gNB/eNB). The target base station is one of candidate target base stations in the conditional handover procedure. After receiving the message, the source base station transmits a sequence number (SN) status transfer message to the target base station.

公开(公告)号：US20200178208A1

公开(公告)日：2020-06-04

申请号：US16634515

申请日：2018-08-06

Applicant: LG Electronics Inc.

Inventor： Seokjung KIM ,  Jian XU ,  Daewook BYUN

IPC: H04W68/02 ,  H04W76/15 ,  H04W76/27

Abstract: Provided are a method of performing a RAN based paging a device supporting the method. According to one embodiment of the present disclosure, a method for performing a RAN based paging in a wireless communication system includes: receiving a message, which includes paging related information and information indicating that a user equipment (UE) enters a radio resource control (RRC) inactive state, from a master node (MN); receiving a downlink (DL) data from a core network; and performing the RAN based paging for the UE by using the paging related information.

公开(公告)号：US20200100102A1

公开(公告)日：2020-03-26

申请号：US16064715

申请日：2018-06-18

Applicant: LG Electronics Inc.

Inventor： Jian XU ,  Daewook BYUN ,  Seokjung KIM

IPC: H04W12/00 ,  H04L9/08 ,  H04L9/16 ,  H04W12/04 ,  H04W80/08

Abstract: Provided are a method and an apparatus for supporting security of user traffic when a central unit (CU)-control plane (CP) and a CU-user plane (UP) of a gNB are separated in a wireless communication system. According to an embodiment of the present invention, the CU-CP of the gNB selects an encryption algorithm, generates a user plane security key for the CU-UP on the basis of the encryption algorithm, and transmits the user plane security key for the CU-UP to the CU-CP. The CU-UP applies the received user plane security key. The CU-CP is a logical node constituting the gNB that hosts a radio resource control (RRC) 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：US20190045408A1

公开(公告)日：2019-02-07

申请号：US16064695

申请日：2017-04-28

Applicant: LG Electronics Inc.

Inventor： Seokjung KIM ,  Jian XU ,  Daewook BYUN

IPC: H04W36/08 ,  H04W76/27

Abstract: Provided are a data transmission method performed by a base station in a wireless communication system, and an apparatus using the method. The base station transmits a message requesting information for data transmission to a second base station and receives, from the second base station, a response message to the message requesting the information for data transmission, wherein the information for data transmission is to transmit data on a terminal in a light connection state.

公开(公告)号：US20190021023A1

公开(公告)日：2019-01-17

申请号：US16065615

申请日：2016-12-27

Applicant: LG ELECTRONICS INC.

Inventor： Daewook BYUN ,  Jinsook RYU ,  Taehun KIM ,  Jian XU ,  Seokjung KIM

IPC: H04W28/02 ,  H04W76/27 ,  H04W60/04 ,  H04W4/70

Abstract: Provided are a method for establishing a bearer for the transmission of user data in a user plane based cellular Internet of Things (CIoT) in a wireless communication system, and a device supporting the same. A base station receives a tracking area update (TAU) request message from a terminal, transmits, to a mobility management entity (MME), an initial UE message including the TAU request message, receives, from the MME, a downlink NAS transport message including a resume indication, and can transmit, to the MME, a UE context resume request message on the basis of the resume indication.