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：US20190357295A1

公开(公告)日：2019-11-21

申请号：US16484781

申请日：2018-02-12

Applicant: LG ELECTRONICS INC.

Inventor： Taehun KIM ,  Daewook BYUN ,  Jaehyun KIM

IPC: H04W76/25 ,  H04W68/00 ,  H04L5/00 ,  H04W76/27

Abstract: Disclosed herein is a method for transmitting and receiving a NAS message in a wireless communication system and an apparatus for the same. Particularly, a method for transmitting a Non-Access Stratum (NAS) message to a User Equipment (UE) in a wireless communication system may include receiving, by a base station, an indication for a transmission of a downlink NAS message from a Core Network (CN) node; initiating, by the base station, a transmission of paging to the UE, when a connection related to the UE is maintained between the base station and the CN node, but the UE is in a state in which a connection is related from the base station; and transmitting, by the base station, an Acknowledgement (ACK) indication to the CN node in response to the indication after the paging transmission is initiated.

公开(公告)号：US20190297661A1

公开(公告)日：2019-09-26

申请号：US16066999

申请日：2017-01-20

Applicant: LG ELECTRONICS INC.

Inventor： Jaewook LEE ,  Jinsook RYU ,  Daewook BYUN

IPC: H04W76/19 ,  H04W76/18 ,  H04W76/11 ,  H04W76/27 ,  H04W8/08

Abstract: A method for at a user equipment (UE) in a wireless communication system is disclosed. The method includes steps of suspending a connection with the network; transmitting a connection resume request message to the network; receiving a connection resume message or a connection setup message from the network based on whether a connection resume request is failed or not; and transmitting a specific message in response to the connection resume message or the connection setup message, wherein the specific message includes a UE identity when the connection setup message is received.

公开(公告)号：US20190253936A1

公开(公告)日：2019-08-15

申请号：US16395936

申请日：2019-04-26

Applicant: LG ELECTRONICS INC.

Inventor： Jian XU ,  Daewook BYUN

IPC: H04W36/00 ,  H04W36/08

CPC classification number: H04W36/0016 ,  H04W36/0055 ,  H04W36/0069 ,  H04W36/08 ,  H04W76/16 ,  H04W84/12 ,  H04W88/06

Abstract: As one aspect of mobility enhancement of 3rd generation partnership project (3GPP) long-term evolution (LTE)-wireless local area network (WLAN) aggregation, inter-eNodeB (eNB) handover without WLAN termination (WT) change is considered. A source eNB transmits a handover request message including a WT identifier (ID) and WT XwAP ID to a target eNB. The target eNB transmits a WT addition request message including the WT XwAP ID to a WT, and receives a WT addition request acknowledge message from the WT. The target eNB transmits a handover request acknowledge message indicating that a WT is kept to the source eNB. The source eNB transmits a WT release request message indicating that the WT is kept to the WT. The WT is a logical node that terminates a Xw interface on a WLAN.

公开(公告)号：US20190208435A1

公开(公告)日：2019-07-04

申请号：US16295674

申请日：2019-03-07

Applicant: LG ELECTRONICS INC.

Inventor： Kyungmin PARK ,  Insun LEE ,  Daewook BYUN ,  Jian XU

IPC: H04W24/08 ,  H04W16/24

CPC classification number: H04W24/08 ,  H04W16/24 ,  H04W88/08 ,  H04W92/20

Abstract: A method for transmitting, by a first base station, coverage modification information in a wireless communication system is discussed. The method includes transmitting, by the first base station, the coverage modification information which informs a second base station that modifying a cell managed by the first base station is planned, to the second base station, and after the first base station transmits the coverage modification information to the second base station, modifying, by the first base station, the cell managed by the first base station.