公开(公告)号：US11564277B2

公开(公告)日：2023-01-24

申请号：US17256992

申请日：2019-08-16

Applicant: LG ELECTRONICS INC.

Inventor： Seokjung Kim ,  Daewook Byun ,  Jian Xu

IPC: H04W76/19 ,  H04W76/11 ,  H04W76/27

Abstract: A method and apparatus for supporting an early data transmission (EDT) in a radio resource control (RRC) inactive state is provided. The current gNB receives a resume request message including uplink (UL) data from the wireless device, and transmits a logical channel identifier (LCID) for the UL data to the last serving gNB. The last serving gNB transmits UL forwarding user plane (UP) transport network layer (TNL) information to the current gNB based on mapping between the LCID for the UL data and data radio bearer (DRB) ID or protocol data unit (PDU) session ID in a UE context stored in the last serving gNB. The current gNB forwards the UL data to a core network via the last serving gNB based on the UL forwarding UP TNL information.

公开(公告)号：US11510268B2

公开(公告)日：2022-11-22

申请号：US16980065

申请日：2019-04-01

Applicant: LG ELECTRONICS INC.

Inventor： Seokjung Kim ,  Jian Xu ,  Daewook Byun

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

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：US11503483B2

公开(公告)日：2022-11-15

申请号：US16981420

申请日：2020-06-18

Applicant: LG ELECTRONICS INC.

Inventor： Seokjung Kim ,  Laeyoung Kim ,  Jian Xu ,  Daewook Byun ,  Myungjune Youn

IPC: H04W4/00 ,  H04W24/04 ,  H04W76/15 ,  H04W76/11 ,  H04W60/04

Abstract: One disclosure of the present specification provides a method for supporting redundant protocol data unit (PDU) sessions. The method may be performed by a unified data management (UDM) node and comprise: receiving, from a first session management function (SMF) node, a first message including a first redundancy sequence number (RSN) which is allocated by the first SMF node for managing a first PDU session and an identifier of the first PDU session; transmitting, to a second SMF node for managing a second PDU session, a second message including the first RSN and a PDU session pair ID, which is identical to the identifier of the first PDU session; and receiving, from the second SMF node, a third message including a second RSN which is allocated by the second SMF node and an identifier of the second PDU session. The second PDU session may be duplication of the first PDU session.

公开(公告)号：US11432209B2

公开(公告)日：2022-08-30

申请号：US16763545

申请日：2018-11-13

Applicant: LG ELECTRONICS INC.

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

IPC: H04W36/00 ,  H04W76/27 ,  H04L1/16 ,  H04W36/08 ,  H04W68/00

Abstract: Provided are a method of managing UE context and a device supporting the method. According to one embodiment of the present invention, a method for managing UE context in a wireless communication system includes: receiving a UE context request message including a radio resource control (RRC) establishment cause from a second BS, wherein the first BS and the second BS are located in a same radio access network (RAN)-based notification area (RNA); and when the RRC establishment cause is related to RNA update, transmitting a UE context response message to the second BS, wherein the UE context response message piggybacks a RRC message requesting a UE to move to a RRC inactive state.

公开(公告)号：US20220264447A1

公开(公告)日：2022-08-18

申请号：US17620479

申请日：2020-07-01

Applicant: LG ELECTRONICS INC.

Inventor： Daewook Byun ,  Jian Xu ,  Seokjung Kim

IPC: H04W52/02 ,  H04W48/18

Abstract: A method and apparatus for saving energy for a Distributed Unit in a wireless communication system is provided. A CU establishes a connection between a Distributed Unit (DU). The CU receives, from the DU, a first message including deactivation request for the DU. The CU determines whether to permit deactivation of the DU or not. The CU transmits, to the DU, a second message in response to the first message, wherein the second message includes information informing that the deactivation request for the DU is accepted or not based on the determination.

公开(公告)号：US11140585B2

公开(公告)日：2021-10-05

申请号：US16711803

申请日：2019-12-12

Applicant: LG Electronics Inc.

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

IPC: H04W36/00 ,  H04W24/10 ,  H04W36/08 ,  H04W36/22 ,  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：US11109349B2

公开(公告)日：2021-08-31

申请号：US16859428

申请日：2020-04-27

Applicant: LG ELECTRONICS INC.

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

IPC: H04W68/02 ,  H04W76/28 ,  H04W88/16 ,  H04W76/27 ,  H04W88/08

Abstract: A method for a wireless device in a wireless communication system includes receiving a paging from a distribution unit (DU) of a base station; and upon receiving the paging message, initiating a service request procedure. Further, the paging is based on paging information transmitted from a central unit (CU) of the base station to the DU of the base station. The paging information includes paging discontinuous reception (DRX) information and paging priority information. The DU of the base station has a radio link control (RLC) layer, a media access control (MAC) layer and a physical layer of the base station. In addition, the CU of the base station has a radio resource control (RRC) layer, a service data adaptation protocol (SDAP) layer, and a packet data convergence protocol (PDCP) layer of the base station.

公开(公告)号：US11096080B2

公开(公告)日：2021-08-17

申请号：US16607219

申请日：2018-04-26

Applicant: LG Electronics Inc.

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

IPC: H04W24/10 ,  H04W92/20

Abstract: Provided is a method in which a secondary node (SN) transmits a measurement configuration by multi radio access technology (RAT) dual connectivity. The SN receives, from a master node (MN), measurement configuration information related to a measurement configuration of the SN, transmits, to user equipment (UE), the measurement configuration on the basis of the measurement configuration information, and receives a measurement report on the basis of the measurement configuration from the UE.

公开(公告)号：US11089601B2

公开(公告)日：2021-08-10

申请号：US16491142

申请日：2018-03-05

Applicant: LG ELECTRONICS INC.

Inventor： Daewook Byun ,  Jian Xu ,  Seokjung Kim

IPC: H04B7/00 ,  H04W72/08 ,  H04W76/15 ,  H04W72/04 ,  H04W92/20

Abstract: Provided are a method for a base station performing interference coordination in a wireless communication system, and a device supporting same. The method may comprise the steps of: receiving slice IDs from a neighboring base station; receiving interference coordination information per slice from the neighboring base station; and performing interference coordination per slice on the basis of the interference coordination information corresponding to the slice IDs.

公开(公告)号：US20210235291A1

公开(公告)日：2021-07-29

申请号：US16972196

申请日：2019-07-22

Applicant: LG ELECTRONICS INC.

Inventor： Daewook Byun ,  Jian Xu ,  Seokjung Kim

IPC: H04W24/04 ,  H04W40/12 ,  H04W28/02

Abstract: A method and apparatus for supporting a link congestion detection in a in an integrated access and backhaul (IAB) network is provided. An IAB-donor-central unit (CU) performs downlink (DL) transmission, receives information about a problem on a backhaul (BH)-radio link control (RLC) channel between a first IAB-node and a second IAB-node, and stop/reduces the DL transmission to the second IAB-node via the BH-RLC channel between the first IAB-node and the second IAB-node based on the information. The IAB-donor-CU may select a path towards the second IAB-node other than the BH-RLC channel between the first IAB-node and the second IAB-node, and perform DL transmission towards the second IAB-node via the selected path.