公开(公告)号：US10531488B2

公开(公告)日：2020-01-07

申请号：US15751840

申请日：2016-08-11

Applicant: LG ELECTRONICS INC.

Inventor： Jonghyun Park ,  Joonkui Ahn ,  Seonwook Kim ,  Kijun Kim ,  Byounghoon Kim ,  Hanbyul Seo

IPC: H04W28/04 ,  H04W74/08 ,  H04B7/06 ,  H04W16/28 ,  H04W16/14

Abstract: According to one embodiment of the present invention, a method by which a wireless communication device including a plurality of antennas transmits and receives a wireless signal in an unlicensed band in a wireless communication system comprises the steps of: performing a clear channel assessment (CCA) by using the plurality of antennas for a predetermined time interval in the unlicensed band; and transmitting the wireless signal through the unlicensed band when it is determined that the unlicensed band is in an idle state in which the unlicensed band is not occupied by other wireless communication devices, wherein the step of performing the CCA can comprise the steps of: acquiring one reference value by using energy sensing indicators (ESIs) measured through the plurality of antennas; and comparing the reference value with a CCA threshold value so as to determine whether the unlicensed band is in an idle state.

公开(公告)号：US10462800B2

公开(公告)日：2019-10-29

申请号：US15541692

申请日：2016-01-12

Applicant: LG ELECTRONICS INC.

Inventor： Seungmin Lee ,  Suckchel Yang ,  Joonkui Ahn ,  Seonwook Kim

IPC: H04W72/08 ,  H04L1/00 ,  H04L5/00 ,  H04W48/10 ,  H04W48/16 ,  H04W72/04 ,  H04W76/27 ,  H04W24/08 ,  H04W72/12 ,  H04W24/10 ,  H04W36/30 ,  H04J11/00 ,  H04W48/12 ,  H04W36/00 ,  H04W28/06

Abstract: Provided are a method whereby user equipment (UE) transmits capability information in a wireless communication system and UE using the method. The method comprises: generating UE capability information indicating the capability of the UE; and transmitting the UE capability information to a base station, wherein the UE capability information includes blind decoding (BD) capability information indicating the number of times the UE can perform BD on a downlink control channel in one subframe.

公开(公告)号：US10425942B2

公开(公告)日：2019-09-24

申请号：US15735696

申请日：2016-06-20

Applicant: LG ELECTRONICS INC.

Inventor： Joonkui Ahn ,  Seonwook Kim ,  Hanbyul Seo ,  Suckchel Yang ,  Yunjung Yi

IPC: H04W72/04 ,  H04L1/18 ,  H04W74/08

Abstract: Provided are a method and a device for transmitting an uplink in an unlicensed band. The device checks for idle subpools by performing clear channel assessment (CCA) on a plurality of sub-pools in a main pool in an unlicensed band. The device transmits an uplink transmission block by using the idle sub-pools in the unlicensed band.

公开(公告)号：US10349446B2

公开(公告)日：2019-07-09

申请号：US15574278

申请日：2016-05-23

Applicant: LG ELECTRONICS INC.

Inventor： Hanjun Park ,  Joonkui Ahn ,  Seonwook Kim

IPC: H04W74/08 ,  H04W72/12 ,  H04W72/14 ,  H04W16/14

Abstract: According to one embodiment, the present invention relates to channel sensing in an unlicensed band in a wireless communication system, and a data transmission method based on the same, wherein the method is performed by a transmission node for transmitting data by performing the channel sensing and comprises the steps of: receiving a data transmission instruction from a control node; performing a channel sensing-related operation in at least one of channel sensing-related operation execution sections set prior to each of a plurality of transmission opportunity units allowed at the transmission node, according to the data transmission instruction; and transmitting data according to the data transmission instruction in the transmission opportunity unit corresponding to a specific channel sensing-related operation execution section, if it is determined that a channel for transmitting the data is in the unoccupied state in the specific channel sensing-related operation execution section, wherein a transmission priority is assigned to each of the plurality of transmission opportunity units, and the length of the channel sensing-related opportunity execution section set prior to each of the plurality of transmission opportunity units can be adjusted according to the transmission priority assigned to each transmission opportunity unit.

公开(公告)号：US10327238B2

公开(公告)日：2019-06-18

申请号：US15317869

申请日：2015-06-12

Applicant: LG ELECTRONICS INC.

Inventor： Yunjung Yi ,  Joonkui Ahn ,  Hanbyul Seo ,  Hyangsun You ,  Seonwook Kim

IPC: H04W72/04 ,  H04W16/14 ,  H04L27/26 ,  H04L5/00 ,  H04L27/00

Abstract: A method and apparatus for determining a length of a physical downlink shared channel (PDSCH) (or, a partial subframe) in a wireless communication system is provided. A user equipment (UE) detects at least one of starting orthogonal frequency division multiplexing (OFDM) symbol or ending OFDM symbol of a PDSCH in an unlicensed carrier, and determines the length of the PDSCH in the unlicensed carrier based on the at least one of the starting OFDM symbol or the ending OFDM symbol of the PDSCH in the unlicensed carrier. The UE may detect the at least one of starting OFDM symbol or ending OFDM symbol based on a physical downlink control channel (PDCCH) or a reference signal (RS) pattern.

公开(公告)号：US10284408B2

公开(公告)日：2019-05-07

申请号：US15324256

申请日：2015-07-13

Applicant: LG ELECTRONICS INC.

Inventor： Yunjung Yi ,  Hyangsun You ,  Byounghoon Kim ,  Seonwook Kim ,  Joonkui Ahn ,  Kijun Kim

IPC: H04L27/26 ,  H04W16/14 ,  H04W74/08 ,  H04W84/12

Abstract: A method and apparatus for transmitting a Wi-Fi signal in a wireless communication system is provided. A device supporting long-term evolution in unlicensed spectrum (LTE-U) transmits a LTE signal, and transmits the Wi-Fi signal. The Wi-Fi signal may be transmitted by various methods, i.e. by being emulated in the LTE signal, by using a Wi-Fi processor which is embedded in a LTE processor, or by using a Wi-Fi processor which is individual to a LTE processor.

公开(公告)号：US10257797B2

公开(公告)日：2019-04-09

申请号：US15502481

申请日：2015-08-07

Applicant: LG ELECTRONICS INC.

Inventor： Hyangsun You ,  Seonwook Kim ,  Joonkui Ahn ,  Yunjung Yi ,  Byounghoon Kim ,  Suckchel Yang ,  Hanbyul Seo

IPC: H04W56/00 ,  H04J11/00 ,  H04W8/00 ,  H04L5/00 ,  H04W48/16

Abstract: Provided are a method and a device whereby a synchronization signal is transmitted and received. One embodiment of the present invention involves using one of a plurality of cells (first cell hereinbelow) in order to transmit synchronization signal setting information of a cell (second cell hereinbelow) set in an unlicensed band of the plurality of cells. The synchronization signal is transmitted on the second cell, based on the synchronization signal setting information. The synchronization signal is used in order to acquire time and frequency synchronization with the second cell.

公开(公告)号：US10178667B2

公开(公告)日：2019-01-08

申请号：US15328837

申请日：2015-07-31

Applicant: LG ELECTRONICS INC.

Inventor： Seonwook Kim ,  Suckchel Yang ,  Kijun Kim ,  Joonkui Ahn ,  Hanbyul Seo ,  Seungmin Lee

IPC: H04W4/00 ,  H04W72/04 ,  H04W16/14 ,  H04W74/08

Abstract: The present disclosure relates to a wireless access system supporting an unlicensed band, and provides a method for configuring a transmission opportunity period (TxOP) and devices for supporting the same. The method for configuring a TxOP in a wireless access system supporting an unlicensed band, according to one embodiment of the present disclosure, can comprise the steps of: performing a carrier sensing step for checking whether a secondary cell (SCell) constituted in an unlicensed band is in an idle state; transmitting a reservation signal for a predetermined amount of time if the SCell is in the idle state; and configuring a TxOP in the SCell. At this time, a start point of a first subframe (SF) included in the TxOP can be matched to a subframe, a slot or symbol boundary of a primary cell (PCell) constituted in a licensed band.

公开(公告)号：US10122480B2

公开(公告)日：2018-11-06

申请号：US15307704

申请日：2015-04-29

Applicant: LG ELECTRONICS INC.

Inventor： Seonwook Kim ,  Seungmin Lee ,  Kijun Kim ,  Hanbyul Seo ,  Byounghoon Kim

IPC: H04B17/345 ,  H04W72/12 ,  H04W24/10 ,  H04L5/00 ,  H04W76/15 ,  H04W16/14 ,  H04W76/02

Abstract: The present invention relates to a wireless access system supporting an unlicensed band and provides a method for reporting channel state information (CSI) on a transmission opportunity (TxOP) duration, and devices supporting the same. According to one embodiment of the present invention, a method by which a user equipment (UE) reports CSI of a TxOP duration in a wireless access system supporting carrier aggregation (CA) with the unlicensed band comprises the steps of: receiving CSI interference measurement (CSI-IM) configuration information related to the TxOP duration through a primary cell (Pcell); measuring an interference amount in subframes of a secondary cell (Scell), in which CSI-IM is set, on the basis of the CSI-IM configuration information; measuring CSI of the TxOP duration for the Scell by using the interference amount; and transmitting the CSI to a base station, wherein the Pcell can be a serving cell configured in a licensed band, and the Scell can be a serving cell configured in the unlicensed band.

公开(公告)号：US10020923B2

公开(公告)日：2018-07-10

申请号：US15224072

申请日：2016-07-29

Applicant: LG ELECTRONICS INC.

Inventor： Hanjun Park ,  Joonkui Ahn ,  Seonwook Kim

IPC: H04L5/00 ,  H04W74/08

CPC classification number: H04L5/0053 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/0082 ,  H04W74/0816

Abstract: Provided is a method of transmitting data by sensing a channel in an unlicensed band including sensing a channel on a secondary cell (S-cell) on which data is to be transmitted in the unlicensed band and if it is determined that the channel is in an unoccupied state, transmitting data to a reception node in one of a plurality of flexible TX time windows configured in advance or transmitting a reservation signal to the reception node in one of a plurality of data transmission prohibit windows configured in advance for the data transmission. The plurality of the flexible TX time windows and The plurality of the data transmission prohibit windows are configured to respectively have a boundary of a transmission unit shifted from a boundary of a transmission unit of a primary cell (P-cell) transmission structure by a specific time.