公开(公告)号：US10420062B2

公开(公告)日：2019-09-17

申请号：US15697400

申请日：2017-09-06

Applicant: LG ELECTRONICS INC.

Inventor： Myeongjin Kim ,  Sangrim Lee

IPC: H04W4/00 ,  H04W64/00 ,  B64C39/02 ,  H04B7/185 ,  H04W88/08

Abstract: A method for a drone to measure a location of a user equipment in a wireless communication system can be provided according to one embodiment of the present specification. In this case, the method can include the steps of performing an initial access procedure with a base station, receiving SRS configuration information of the user equipment from the base station, receiving an SRS from the user equipment based on the SRS configuration information of the user equipment, and transmitting location measurement information, which is measured based on the received SRS, to the base station.

公开(公告)号：US10411869B2

公开(公告)日：2019-09-10

申请号：US15520737

申请日：2015-04-07

Applicant: LG ELECTRONICS INC.

Inventor： Eunjong Lee ,  Jaehoon Chung ,  Genebeck Hahn ,  Jinmin Kim ,  Kukheon Choi ,  Kwangseok Noh ,  Sangrim Lee

IPC: H04L5/00 ,  H04W72/12 ,  H04W72/04 ,  H04L5/14 ,  H04L1/00 ,  H04W52/34

Abstract: A method for transmitting and receiving data in a wireless communication system and an apparatus for the method are disclosed. More specifically, a method for transmitting downlink data in a wireless communication system comprises transmitting, by an eNB, first downlink data through a physical downlink shared channel (PDSCH) region according to a radio frame structure based on a first transmission time interval (TTI); and transmitting, by the eNB, second downlink data through a short PDSCH (sPDSCH) region according to a radio frame structure based on a second TTI, wherein downlink control information (DCI) related to the second downlink data is transmitted through a physical downlink control channel (PDCCH) or a short PDCCH (sPDCCH).

公开(公告)号：US10333570B2

公开(公告)日：2019-06-25

申请号：US15545667

申请日：2015-10-21

Applicant: LG ELECTRONICS INC.

Inventor： Dongkyu Kim ,  Hyunsoo Ko ,  Jaehoon Chung ,  Kukheon Choi ,  Kwangseok Noh ,  Sangrim Lee

IPC: H04B1/12 ,  H04B15/02 ,  H04B1/525 ,  H04B7/08 ,  H04L5/14 ,  H04B17/14 ,  H04B1/56 ,  H04L5/00 ,  H04B17/345

Abstract: A method for removing a self-interference signal by a device supporting an FDR mode can further comprise the steps of: transmitting a signal to a counterpart node in a predetermined time interval; generating, in an RF stage of the device, a residual self-interference signal after removal of an analog self-interference signal with respect to the signal and then storing same; and receiving from the counterpart node an ACK/NACK signal with respect to the transmission of the signal; and determining whether or not the stored residual self-interference signal is to be used thereafter on the basis of the ACK/NACK signal.

公开(公告)号：US10321458B2

公开(公告)日：2019-06-11

申请号：US15567686

申请日：2015-09-24

Applicant: LG ELECTRONICS INC.

Inventor： Sangrim Lee ,  Hyunsoo Ko ,  Kukheon Choi ,  Kwangseok Noh ,  Dongkyu Kim ,  Hojae Lee

IPC: H04B7/00 ,  H04W72/04 ,  H04L27/26 ,  H04W28/08 ,  H04W28/26 ,  H04W16/14 ,  H04L5/00

Abstract: Provided are a method and an apparatus for allocating, by a first OFDM system and a second OFDM system, frequency resources, which are multiplexed in a frequency region, in a wireless communication system. Specifically, the sizes of the frequency resources of the first OFDM system, which corresponds to an existing OFDM, and the second OFDM system, which corresponds to a UF-OFDM, are determined. Adjacent subcarriers are instructed to allocate any one of a guard carrier and a subcarrier to which null data is allocated, while performing frequency resource allocation between the first and second OFDM systems in accordance with the determined sizes of the frequency resources. The information regarding the frequency resource allocation, which comprises information indicative of either the guard carrier or the subcarrier, is transmitted.

公开(公告)号：US10320541B2

公开(公告)日：2019-06-11

申请号：US15560404

申请日：2015-09-24

Applicant: LG ELECTRONICS INC.

Inventor： Sangrim Lee ,  Hyunsoo Ko ,  Jaehoon Chung ,  Kwangseok Noh ,  Dongkyu Kim

IPC: H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04L25/02 ,  H04L25/03

Abstract: Provided is a transmission device for transmitting data in a wireless communication based on DFT-spread OFDM. Specifically, provided is a transmission device which outputs a first sub-band and a second sub-band by performing DFT on an input symbol with a tail part and a head part in which at least one 0 has been inserted by a DFT block controlled by a processor, outputs a signal by performing IDFT on the first sub-band which has been mapped by a first IDFT block, allows the signal to be filtered by a first band pass filter, outputs a signal by performing IDFT on the second sub-band which has been mapped by a second IDFT block, and allows the signal to be filtered by a second band pass filter.

公开(公告)号：US10291452B2

公开(公告)日：2019-05-14

申请号：US15563180

申请日：2016-01-21

Applicant: LG ELECTRONICS INC.

Inventor： Sangrim Lee ,  Hyunsoo Ko ,  Jaehoon Chung ,  Kwangseok Noh ,  Dongkyu Kim ,  Hojae Lee

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

Abstract: A method for a base station processing in-band multiplexing using an FCP-OFDM scheme may comprise the steps of: transmitting, to a terminal, information on the length of zero padding (ZP) for a receiving side and the length of ZP for a transmitting side in a band for a first service among one or more services provided in one carrier; and on the basis of the information on the length of ZP for a receiving side and the length of ZP for a transmitting side, processing a signal of the first service in the transmitting end or receiving end of the base station.

公开(公告)号：US10264607B2

公开(公告)日：2019-04-16

申请号：US15735586

申请日：2015-11-05

Applicant: LG ELECTRONICS INC.

Inventor： Sangrim Lee ,  Bonghoe Kim ,  Hyunsoo Ko ,  Yunjung Yi ,  Hojae Lee

IPC: H04W74/08 ,  H04W72/04

Abstract: A method and a device for performing a random access in a wireless communication system are provided. Specifically, a wireless resource for transmitting a first random access request is selected, and the first random access request is transmitted through the wireless resource. The first random access request includes a transmission period of the first random access request, the frequency of retransmission, and an allowable error of the transmission period. Uplink resource allocation information is received in response to the first random access request. The uplink resource allocation information includes information on an indicator bit and a wireless resource shift. When the indicator bit is a preset value, a second random access request is transmitted through a wireless resource shifted from the wireless resource.

公开(公告)号：US10231249B2

公开(公告)日：2019-03-12

申请号：US15314437

申请日：2015-04-30

Applicant: LG ELECTRONICS INC. ,  KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

Inventor： Jiwon Kang ,  Inkyu Lee ,  Sangrim Lee

IPC: H04L27/00 ,  H04W72/08 ,  H04B7/06 ,  H04B7/0456 ,  H04L5/00

Abstract: Disclosed is a signal transmission method. The signal transmission method includes the steps of: setting a default value for generating a beamforming vector to be used for precoding; performing a calculation process of an outer layer for determining whether an accuracy of an energy efficiency satisfies a first threshold value range during a dual layer calculation process for maximizing an energy efficiency of a base station; performing a calculation process of an inner layer for calculating a predetermined second threshold value on which deterministic equivalence of a channel gain matrix coverage; generating a beamforming vector on the basis of values used in the calculation process of the outer layer and the calculation process of the inner layer, when the accuracy of the energy efficiency satisfies the first threshold value range in the calculation process of the outer layer; generating a transmission signal using the beamforming vector; and transmitting the generated transmission signal.

公开(公告)号：US10225109B2

公开(公告)日：2019-03-05

申请号：US15249119

申请日：2016-08-26

Applicant: LG ELECTRONICS INC.

Inventor： Sangrim Lee ,  Jaehoon Chung ,  Kwangseok Noh ,  Dongkyu Kim ,  Hojae Lee

IPC: H04L25/02 ,  H04L5/00 ,  H04L5/14

Abstract: A method for transmitting information related to a sounding reference signal (SRS) transmission by a base station (BS) of a full duplex radio (FDR) mode in a wireless communication system includes: transmitting information related to a resource region to be used for the SRS transmission to a user equipment of the FDR mode within a resource region configured as an uplink (UL) idle interval; receiving a SRS through the resource region for the SRS transmission from the user equipment; performing an uplink (UL) channel estimation based on the received SRS; and performing a downlink (DL) channel estimation by applying a channel reciprocity characteristic to a result of the uplink (UL) channel estimation.

公开(公告)号：US10117242B2

公开(公告)日：2018-10-30

申请号：US15411696

申请日：2017-01-20

Applicant: LG ELECTRONICS INC.

Inventor： Sangrim Lee ,  Kwangseok Noh ,  Dongkyu Kim ,  Hojae Lee ,  Myeongjin Kim

IPC: H04J3/00 ,  H04W72/04 ,  H04W16/28 ,  H04L5/22 ,  H04W74/08 ,  H04W4/00 ,  H04W4/70

Abstract: A method of performing contention based multiple access (MA) by a base station in a wireless communication system, includes receiving information regarding a best beam ID (identifier) from each user equipment (UE), allocating a resource for contention based multiple access per beam based on a number of best beam ID per beam obtained from the information regarding the best beam ID received from the each UE, and transmitting information regarding the resource for the contention based multiple access allocated per beam, to the each UE. In this case, an amount of the resource allocated for the contention based multiple access per beam is in proportion to the number of best beam ID per beam.