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231.发明申请公开(公告)号：US20180102825A1
公开(公告)日：2018-04-12
申请号：US15521150
申请日：2015-12-16
Applicant: LG ELECTRONICS INC.
Inventor： Jiwon KANG , Kitae KIM , Kilbom LEE , Kyungmin PARK , Heejin KIM
IPC: H04B7/08 , H04B7/0408
CPC classification number: H04B7/088 , H04B7/0408
Abstract: A method of receiving a signal, which is received by a receiving end in a wireless communication system, is disclosed in the present specification. The method includes the steps of calculating effective Doppler spread values of reception beam combinations, wherein each reception beam combination consists of two or more reception beams among a plurality of reception beams; selecting a first reception beam combination from the reception beam combinations using the effective Doppler spread values; and receiving the signal from a transmitting end using at least one reception beam included in the selected first reception beam combination.
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232.发明申请公开(公告)号：US20180083719A1
公开(公告)日：2018-03-22
申请号：US15561384
申请日：2016-03-23
Applicant: LG ELECTRONICS INC.
Inventor： Kitae KIM , Jiwon KANG , Kilbom LEE , Kungmin PARK , Heejin KIM
CPC classification number: H04B17/104 , H04B7/04 , H04B7/0617 , H04B7/0695 , H04B17/318 , H04L25/02 , H04L25/0222
Abstract: Provided is a method for estimating a Doppler frequency in a wireless communication system that operates in a millimeter wave (mmWave) bandwidth. A receiver implements a beam scanning process by using a plurality of preambles corresponding respectively to a plurality of beams to which mutually different beam forming is applied, and estimates a Doppler frequency for each of the plurality of beams. The plurality of preambles may correspond respectively to the beam forming directions of the plurality of beams.
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公开(公告)号：US20180077662A1
公开(公告)日：2018-03-15
申请号：US15561634
申请日：2016-03-29
Applicant: LG ELECTRONICS INC.
Inventor： Kitae KIM , Jiwon KANG , Kilbom LEE , Kungmin PARK , Heejin KIM
Abstract: Provided are a method and an apparatus for transmitting, on the basis of a repeating pattern, a synchronization signal in a wireless communication system. A base station divides a cell into multiple sectors and transmits multiple types of synchronization signals, which respectively correspond to the multiple sectors and have different repeating patterns, to a terminal through a system frame. The terminal performs detection of the multiple types of synchronization signals having the different repeating patterns and determines the position of the terminal within the cell according to the detected synchronization signals.
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公开(公告)号：US20170353221A1
公开(公告)日：2017-12-07
申请号：US15541684
申请日：2015-06-23
Applicant: LG ELECTRONICS INC.
Inventor： Jiwon KANG , Kitae KIM , Kilbom LEE , Kungmin PARK , Heejin KIM
CPC classification number: H04B7/0626 , H04B7/0404 , H04B7/0413 , H04B7/0469 , H04B7/0634 , H04B7/0639 , H04B7/10 , H04B17/24 , H04B17/309 , H04B17/318 , H04B17/345 , H04L5/0048 , H04W72/1226 , H04W88/02 , H04W88/08
Abstract: The present application discloses a method for a terminal reporting channel state information to a base station in a wireless communication system. Specifically, the method comprises the steps of: receiving, from a base station, a plurality of first reference signals corresponding to a row or a column of a transmission antenna array, and a second reference signal for measuring cross polarization characteristics; calculating first precoders of each of the plurality of first reference signals, and connection coefficient information between the first precoders; generating cross polarization characteristics information by using the second reference signal; and reporting, to the base station, channel state information comprising the first precoders, the connection coefficient information, and the cross polarization characteristics information.
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235.发明申请公开(公告)号：US20170310522A1
公开(公告)日：2017-10-26
申请号：US15523582
申请日：2015-11-02
Applicant: LG ELECTRONICS INC.
Inventor： Kilbom LEE , Wookbong LEE , Eunsung PARK , HanGyu CHO , Jiwon KANG
CPC classification number: H04L27/2657 , H04L27/22 , H04W84/12
Abstract: Disclosed is a CFO estimation method comprising: generating a first function defined by reception signals in two successive OFDM symbols for a particular subcarrier; generating a second function defined on the basis of a sign of a real part of the first function; repeatedly performing a process of generating the first function and the second function for an entire subcarrier set; and determining a phase of a third function obtained by adding results of the repeated performance to be a residual CFO.
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Patent Agency Ranking
236.发明申请公开(公告)号：US20170272223A1
公开(公告)日：2017-09-21
申请号：US15505496
申请日：2015-06-25
Applicant: LG ELECTRONICS INC.
Inventor： Kitae KIM , Jiwon KANG , Kilbom LEE , Heejin KIM
CPC classification number: H04L5/0048 , H04B7/0617 , H04B7/0639 , H04B7/0695 , H04B7/08 , H04B7/088 , H04W72/046 , H04W88/02 , H04W88/08
Abstract: A method for determining a weight for hybrid beamforming by a base station in a wireless communication system according to an embodiment of the present invention comprises the steps of: signaling, to a terminal, a configuration for repeatedly transmitting a first omni-directional beam equally formed in all directions; receiving the first omni-directional beam from the terminal by forming a second omni-directional beam; repeatedly receiving the first omni-directional beam from the terminal by sequentially forming a plurality of directional beams corresponding to a plurality of directions; and determining a weight for hybrid beamforming on the basis of a gain difference between the first omni-directional beam received through the second omni-directional beam and the first omni-directional beam received through a first directional beam among the plurality of directional beams.
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公开(公告)号：US20170214506A1
公开(公告)日：2017-07-27
申请号：US15326026
申请日：2015-08-19
Applicant: LG ELECTRONICS INC.
Inventor： Kilbom LEE , Jiwon KANG , Jinsoo CHOI , Wookbong LEE , Dongguk LIM , Hangyu CHO , Eunsung PARK
CPC classification number: H04L5/0048 , H04L27/2613 , H04W72/042 , H04W84/12
Abstract: One embodiment of the present invention provides a transmitter and a pilot sequence transmission method comprising: generating an asymmetric sequence set comprising a plurality of pilot sequences which have been circular shifted by irregular intervals on a time axis; mapping, to the respective pilot sequences included in the asymmetric sequence set, additional information that is shown by using shared bits and non-shared bits; and selecting any one pilot sequence selected from the asymmetric sequence set and transmitting same to a receiver.
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238.发明申请公开(公告)号：US20170149540A1
公开(公告)日：2017-05-25
申请号：US15323670
申请日：2015-08-19
Applicant: LG ELECTRONICS INC.
Inventor： Kilbom LEE , Jiwon KANG , Wookbong LEE , Jinsoo CHOI , Dongguk LIM , Hangyu CHO , Eunsung PARK
CPC classification number: H04L5/005 , H04L5/0026 , H04L5/0048 , H04L27/0008 , H04L27/18 , H04L27/26 , H04L27/2613
Abstract: Disclosed is a method for transmitting a pilot sequence, the method comprising: generating a sequence set on the basis of a baseline sequence having non-CAZAC properties; and selecting any one pilot sequence form among sequence sets corresponding to different additional information, and transmitting same to a receiver.
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239.发明申请公开(公告)号：US20170141826A1
公开(公告)日：2017-05-18
申请号：US15321722
申请日：2014-06-26
Applicant: LG ELECTRONICS INC.
Inventor： Kitae KIM , Heejin KIM , Kilbom LEE , Jiwon KANG
CPC classification number: H04B7/0486 , H04B7/0482 , H04B7/0639 , H04W72/0453 , H04W72/06 , H04W88/02 , H04W88/08
Abstract: Disclosed in the present application is a method for a terminal reporting a precoding matrix index to a base station in a wireless communication system. Specifically, the method comprises the steps of: estimating a channel with the base station; on the basis of the estimated channel, selecting a first precoding matrix from a first codebook; on the basis of the estimated channel, selecting a second precoding matrix from a second codebook comprising only precoding matrixes which do not include the first precoding matrix; and reporting, to the base station, at least one among the index of the first precoding matrix and the index of the second precoding matrix.
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240.发明申请公开(公告)号：US20170134083A1
公开(公告)日：2017-05-11
申请号：US15318287
申请日：2014-09-03
Applicant: LG ELECTRONICS INC.
Inventor： Kitae KIM , Jiwon KANG , Kilbom LEE , Heejin KIM
IPC: H04B7/06 , H04B7/0456
CPC classification number: H04B7/0617 , H04B7/0417 , H04B7/0456 , H04B7/0695
Abstract: A method for, at a transmitter, transmitting a signal to a receiver in a wireless communication system is disclosed. The method includes transmitting a first reference signal for omni-directionally providing a uniform reference beam to the receiver, transmitting a second reference signal for providing beams respectively corresponding to a predetermined number of sectors to the receiver, receiving, from the receiver, sector information selected based on the second reference signal and information about a beam gain difference between a beam corresponding to the selected sector and the reference beam, and performing beamforming for transmitting a signal to the receiver based on the sector information and the information about the beam gain difference.
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