公开(公告)号：US20200305193A1

公开(公告)日：2020-09-24

申请号：US16885913

申请日：2020-05-28

Applicant: LG ELECTRONICS INC.

Inventor： Seonwook Kim ,  Joonkui Ahn ,  Hanbyul Seo ,  Byounghoon Kim ,  Hanjun Park

IPC: H04W74/08 ,  H04L1/00 ,  H04L1/18 ,  H04L5/00

Abstract: The present invention relates to a wireless access system supporting an unlicensed band and a carrier sensing method, and more specifically, to methods for performing listen before talk (LBT), methods for selecting a representative carrier, methods for transmitting data bursts, and a device for supporting same. A method for a base station transmitting a data burst in a wireless access system supporting an unlicensed band and carrier aggregation, according to one embodiment of the present invention, may comprise the steps of: selecting a first component carrier (CC) from among at least two CCs; performing a listen before talk (LBT) process during which a random backoff is carried out by the first CC; and transmitting the data burst from the first CC; and transmitting the data burst from the first CC, when the first CC is in an idle state after the LBT process, wherein the step of selecting the first CC may be performed every time a specific number of data bursts have been transmitted or at specific time intervals.

公开(公告)号：US10772127B2

公开(公告)日：2020-09-08

申请号：US15741834

申请日：2016-07-11

Applicant: LG ELECTRONICS INC.

Inventor： Seonwook Kim ,  Joonkui Ahn ,  Hanbyul Seo ,  Byounghoon Kim ,  Hanjun Park

IPC: H04W74/08 ,  H04L1/00 ,  H04L1/18 ,  H04L5/00 ,  H04W16/14

Abstract: A method for transmitting a signal in a wireless access system and a device supporting the same includes, for carrier sensing methods, a method for performing a channel access procedure, for selecting a representative carrier, and for transmitting a data burst.

公开(公告)号：US10749631B2

公开(公告)日：2020-08-18

申请号：US16089118

申请日：2017-03-29

Applicant: LG ELECTRONICS INC.

Inventor： Kijun Kim ,  Byounghoon Kim ,  Joonkui Ahn ,  Daesung Hwang

IPC: H04L1/00 ,  H03M13/11 ,  H04L5/00 ,  H04W72/04 ,  H03M13/35 ,  H03M13/29 ,  H04L5/14

Abstract: Disclosed are a method by which a base station and a terminal transmit and receive a data signal, and a device for supporting the same. More specifically, disclosed are: a method for efficiently transmitting and receiving a corresponding data signal between a base station and a terminal by using a coding scheme determined on the basis of various conditions for the transmitted data signal; and devices for supporting the same.

公开(公告)号：US10743299B2

公开(公告)日：2020-08-11

申请号：US16064936

申请日：2017-11-01

Applicant: LG ELECTRONICS INC.

Inventor： Yunjung Yi ,  Kijun Kim ,  Byounghoon Kim

IPC: H04W72/04 ,  H04L5/00 ,  H04W72/12

Abstract: A method and apparatus for configuring a data subband in a wireless communication system is provided. A user equipment (UE) receives an indication of a data subband from a network, configures at least one data subband according to the indication, and performs communication with the network via the at least one data subband. One data subband consists of contiguous or non-contiguous physical resource blocks (PRBs).

公开(公告)号：US10743192B2

公开(公告)日：2020-08-11

申请号：US15777871

申请日：2016-11-24

Applicant: LG ELECTRONICS INC.

Inventor： Daesung Hwang ,  Seungmin Lee ,  Hanjun Park ,  Byounghoon Kim

IPC: H04B7/14 ,  H04W16/26 ,  H04W24/08 ,  H04W16/18 ,  H04W88/04 ,  H04W40/20 ,  H04W64/00 ,  H04W84/00 ,  H04W84/04

Abstract: To achieve the above described objective, a disclosure of the present specification provides a method in which a cell having mobility provides a communication service. The method may comprise the steps of: obtaining, by the cell having mobility, first channel state information associated with a departure point node that is to transmit data; obtaining, by the cell having mobility, second channel state information associated with a destination node that is to receive data; and determining, by the cell having mobility, a location where the cell is to be located at a time point for data communication relay between the departure point node and the destination node on the basis of the first channel state information and the second channel state information. In this instance, the cell having mobility can move in the horizontal direction and the vertical direction from the surface of the earth.

公开(公告)号：US20200220671A1

公开(公告)日：2020-07-09

申请号：US16822549

申请日：2020-03-18

Applicant: LG ELECTRONICS INC.

Inventor： Seonwook Kim ,  Joonkui Anh ,  Hanjun Park ,  Yunjung Yi ,  Suckchel Yang ,  Byounghoon Kim ,  Hanbyul Seo

IPC: H04L1/18 ,  H04L5/00 ,  H04L1/00 ,  H04W16/14 ,  H04W28/06 ,  H04W72/04 ,  H04W74/08

Abstract: Embodiments of the present invention relate to a wireless access system supporting a non-licensed band and, more particularly, to methods for transmitting or receiving sub-frame length information indicating the lengths of current and next sub-frames, and apparatuses for supporting the same. As an embodiment of the present invention, a method for receiving sub-frame (SF) length information in a wireless access system supporting a non-licensed band may comprise the steps of: receiving a signal including first SF length information indicating the lengths of one or more of a current SF and a next SF in sub-frame number n−1 (SF # n−1); and receiving one or more of a downlink physical channel and a downlink signal in the SF # n−1 on the basis of the first SF length information. Here, the first SF length information may indicate that the current SF or the next SF is the end SF of a downlink transmission burst in the non-licensed band.

公开(公告)号：US10701722B2

公开(公告)日：2020-06-30

申请号：US15753809

申请日：2016-08-19

Applicant: LG ELECTRONICS INC

Inventor： Seonwook Kim ,  Joonkui Ahn ,  Hanjun Park ,  Byounghoon Kim

IPC: H04W72/12 ,  H04W74/00 ,  H04L1/18 ,  H04L1/00 ,  H04W74/08 ,  H04W16/14 ,  H04W84/12

Abstract: The present invention relates to a radio access system that supports an unlicensed band, and provides methods for controlling a contention window size (CWS) for performing uplink LBT, methods for effectively utilizing a radio resource even when an uplink data transmission fails, and apparatuses supporting the same. As an embodiment of the present invention, a method for controlling a contention window size (CWS) for transmitting uplink data in a radio access system supporting an unlicensed band by a user equipment, may comprise the steps of: receiving, from an evolved node B, a radio signal including CSW control information indicating information required for controlling a CWS; controlling the CWS on the basis of the CWS control information; performing a listen before talk (LBT) process using the controlled CWS; and transmitting uplink data when a result of the LBT process shows that an unlicensed band is in an idle state.

公开(公告)号：US10575200B2

公开(公告)日：2020-02-25

申请号：US15757644

申请日：2016-09-02

Applicant: LG ELECTRONICS INC.

Inventor： Haewook Park ,  Kijun Kim ,  Byounghoon Kim ,  Jonghyun Park

IPC: H04W24/10 ,  H04B7/0417 ,  H04L5/00 ,  H04B7/04 ,  H04B7/06

Abstract: According to one aspect of the present invention, a method for reporting channel state information (CSI) of a terminal in a wireless communication system comprises the steps of: receiving, from a base station, channel state information-reference signal (CSI-RS) resource information on a CSI-RS resource to which a CSI-RS is mapped; receiving the CSI-RS from the base station on the basis of the received CSI-RS resource information, by using at least one antenna port; and reporting, to the base station, the CSI generated on the basis of the received CSI-RS, wherein the CSI-RS resource can be configured by aggregating a plurality of legacy CSI-RS resources.

公开(公告)号：US10548167B2

公开(公告)日：2020-01-28

申请号：US15571453

申请日：2016-05-13

Applicant: LG ELECTRONICS INC.

Inventor： Joonkui Ahn ,  Byounghoon Kim ,  Suckchel Yang ,  Yunjung Yi ,  Seonwook Kim

IPC: H04J3/06 ,  H04W74/08 ,  H04W16/14 ,  H04W56/00

Abstract: Provided are a method for performing a random access process in an unlicensed band, and a device using the same. The device receives a random access preamble (RAP) order instructing the transmission of a RAP. The device performs a clear channel assessment (CCA) in an unlicensed cell during an RAP window so as to transmit the RAP when the device succeeds in CCA.

公开(公告)号：US10523353B2

公开(公告)日：2019-12-31

申请号：US15765236

申请日：2016-10-04

Applicant: LG ELECTRONICS INC.

Inventor： Bonghoe Kim ,  Kijun Kim ,  Hyunsoo Ko ,  Byounghoon Kim ,  Yunjung Yi ,  Seokmin Shin

IPC: H04J11/00 ,  H04L5/00 ,  H04L27/26 ,  H04J13/00

Abstract: The present invention provides a method and devices for transmitting and receiving a synchronization signal and a method for generating a synchronization signal in a wireless access system supporting NB-IoT. A method for transmitting a narrowband secondary synchronization signal (N-SSS) by a base station in a wireless access system supporting NB-IoT, according to an embodiment of the present invention, can comprise the steps of: generating a first sequence having a size M so as to generate an N-SSS; generating a second sequence having a size M so as to generate an N-SSS; generating an N-SSS by means of the first sequence and second sequence; and transmitting the N-SSS by means of n OFDM symbols. The size of a bandwidth used in the wireless access system supporting NB-IoT is the size of one physical resource block (PRB), and one PRB can comprise twelve subcarriers in a frequency domain.