公开(公告)号：US10574412B2

公开(公告)日：2020-02-25

申请号：US15408283

申请日：2017-01-17

Applicant: LG Electronics Inc.

Inventor： Jae Hoon Chung ,  Yeong Hyeon Kwon ,  Seung Hee Han ,  Min Seok Noh

IPC: H04W72/04 ,  H04W76/27 ,  H04L5/00 ,  H04B7/06 ,  H04L1/00 ,  H04L1/16

Abstract: The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and to an apparatus for transmitting an SRS in a multi-antenna system. The method comprises the steps of: acquiring specific information for discriminating a first antenna group and a second antenna group from among a plurality of antennas, wherein said first antenna group includes one or more antennas which are set to a turned-on state to perform communication with a base station, and said second antenna group includes one or more other antennas which are set to a turned-off state; transmitting an SRS to the base station if a predetermined condition is satisfied, under the condition that the second antenna group is set to the turned-off state; and setting the second antenna group to a turned-off state after the transmission of the SRS.

公开(公告)号：US10412715B2

公开(公告)日：2019-09-10

申请号：US15286166

申请日：2016-10-05

Applicant: LG ELECTRONICS INC.

Inventor： Min Seok Noh ,  Jae Hoon Chung ,  Hyun Soo Ko

IPC: H04W72/04 ,  H04W56/00 ,  H04L5/00 ,  H04W72/02 ,  H04L27/26 ,  H04B7/024 ,  H04W88/02

Abstract: A method and a user equipment (UE) for transmitting a demodulation reference signal for a physical uplink shared channel (PUSCH) in a wireless communication system are discussed. The method according to an embodiment includes configuring a virtual cell identity (ID) which is different from a physical cell ID; generating a base sequence by using the virtual cell ID; obtaining a cyclic shift hopping pattern for each slot by using a UE-specific parameter; generating the demodulation reference signal for the PUSCH by using the base sequence and the cyclic shift hopping pattern for each slot; and transmitting the demodulation reference signal for the PUSCH to an eNodeB (eNB).

公开(公告)号：US10320544B2

公开(公告)日：2019-06-11

申请号：US15913491

申请日：2018-03-06

Applicant: LG ELECTRONICS INC.

Inventor： Min Seok Noh ,  Hyun Soo Ko ,  Seung Hee Han ,  Jae Hoon Chung ,  Moon Il Lee

IPC: H04W4/00 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04B7/06 ,  H04W88/06

Abstract: A method for transmitting a demodulation reference signal (DM-RS), by a user equipment (UE), in a wireless communication system is discussed. The method includes receiving, by the UE from a base station, a cyclic shift field in downlink control information (DCI), wherein the cyclic shift field indicates first, second, and third cyclic shift values for first, second, and third layers respectively, generating, by the UE, first, second, and third DMRSs for the first, second, and third layers respectively, based on first, second, and third cyclic shifts respectively, wherein the first, second, and third cyclic shifts are determined based on the first, second, and third cyclic shift values respectively, and transmitting, by the UE to the base station, the first, second, and third DMRSs.

公开(公告)号：US10264567B2

公开(公告)日：2019-04-16

申请号：US15448965

申请日：2017-03-03

Applicant: LG ELECTRONICS INC.

Inventor： Min Seok Noh ,  Jae Hoon Chung ,  Seung Hee Han

IPC: H04L12/26 ,  H04W72/04 ,  H04B7/155 ,  H04L5/00 ,  H04L27/26 ,  H04L1/00

Abstract: A method for mapping uplink data to a physical uplink shared channel (PUSCH) by a user equipment (UE) in a wireless communication system, the method includes receiving a configuration for a UE-specific aperiodic sounding reference signal (SRS) subframe from a base station; and mapping the uplink data to the PUSCH in the UE-specific aperiodic SRS subframe, wherein the UE-specific aperiodic SRS subframe includes a single carrier frequency division multiple access (SC-FDMA) symbol reserved for an aperiodic SRS, wherein the aperiodic SRS is selectively transmitted in the reserved SC-FDMA symbol to the base station, and the aperiodic SRS is transmitted in the reserved SC-FDMA symbol when triggered by the base station, and wherein the uplink data is mapped to SC-FDMA symbols other than the SC-FDMA symbol reserved for the aperiodic SRS in the UE-specific aperiodic SRS subframe in a case when the aperiodic SRS is not transmitted in the reserved SC-FDMA symbol.

公开(公告)号：US10219236B2

公开(公告)日：2019-02-26

申请号：US15647976

申请日：2017-07-12

Applicant: LG ELECTRONICS INC.

Inventor： Seunghee Han ,  Min Seok Noh ,  Yeong Hyeon Kwon ,  Hyun Woo Lee ,  Dong Cheol Kim ,  Jin Sam Kwak

IPC: H04W56/00 ,  H04L27/26 ,  H04L25/03 ,  H04J13/00 ,  H04J11/00 ,  H04B7/212 ,  H04B1/7083 ,  H04W48/16 ,  H04B1/7073 ,  H04J13/10

Abstract: A method of performing cell search includes receiving a primary synchronization signal (PSS) comprising a primary synchronization code (PSC) and receiving a secondary synchronization signal (SSS) comprising a first secondary synchronization code (SSC) and a second SSC, wherein the SSS includes a first SSS and a second SSS, the first SSC and the second SSC are arranged in that order in the first SSS, and the second SSC and the first SSC are arranged in that order in the second SSS. Detection performance on synchronization signals can be improved, and cell search can be performed more reliably.

公开(公告)号：US10091770B2

公开(公告)日：2018-10-02

申请号：US15479995

申请日：2017-04-05

Applicant: LG ELECTRONICS INC.

Inventor： Jin Sam Kwak ,  Seung Hee Han ,  Min Seok Noh ,  Yeong Hyeon Kwon ,  Hyun Woo Lee ,  Dong Cheol Kim

IPC: H04L1/00 ,  H04W72/04 ,  H04L5/00 ,  H04L27/26 ,  H04L27/20 ,  H04L27/22 ,  H04J11/00 ,  H04L1/16

Abstract: A method of transmitting control signals in a wireless communication system includes multiplexing a first control signal with a second control signal in a slot, the slot comprising a plurality of orthogonal frequency division multiplexing (OFDM) symbols in time domain, the plurality of OFDM symbols being divided into a plurality of data OFDM symbols and a plurality of reference signal (RS) OFDM symbols, wherein the first control signal is mapped to the plurality of data OFDM symbols after the first control signal is spread by a base sequence in the frequency domain, the RS is mapped to the plurality of RS OFDM symbols, the second control signal is mapped to at least one of the plurality of RS OFDM symbols, and transmitting the first control signal and the second control signal in the slot.

公开(公告)号：US10044461B2

公开(公告)日：2018-08-07

申请号：US15697210

申请日：2017-09-06

Applicant: LG ELECTRONICS INC.

Inventor： Min Seok Noh ,  Seung Hee Han ,  Yeong Hyeon Kwon ,  Hyun Woo Lee ,  Dong Cheol Kim ,  Jin Sam Kwak

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

CPC classification number: H04J13/0062 ,  H04J11/005 ,  H04L5/0016 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/0053 ,  H04L23/02 ,  H04L27/2607 ,  H04L27/261 ,  H04L27/2613

Abstract: Method for generating reference signal sequence using grouping is explained. In this method, base sequences are grouped such that each group contains at least one base sequence of each length, so UE(s) can use various length sequences as a reference signal. And in this method, inter cell interference caused by using various length sequence as a reference signal sequence can be minimized by grouping sequences having the high cross correlation relation.

公开(公告)号：US10009159B2

公开(公告)日：2018-06-26

申请号：US15257159

申请日：2016-09-06

Applicant: LG ELECTRONICS INC.

Inventor： Jae Hoon Chung ,  Moon Il Lee ,  Seung Hee Han ,  Min Seok Noh

IPC: H04L5/00 ,  H04B7/155 ,  H04W92/12 ,  H04W52/14 ,  H04W52/32 ,  H04W52/58 ,  H04L27/26 ,  H04W84/04

CPC classification number: H04L5/0048 ,  H04B7/155 ,  H04B7/15557 ,  H04L27/26 ,  H04W52/146 ,  H04W52/325 ,  H04W52/58 ,  H04W84/047 ,  H04W92/12

Abstract: A method is provided for demodulating a signal. A relay node receives control information, from an evolved-NodeB (eNB), through a relay-physical downlink control channel (R-PDCCH), and receives a data, from the eNB, through a physical downlink shared channel (PDSCH). When a number of transmission layers of the PDSCH is 2 or more than 2 and a plurality of reference signals for a demodulation of the data are transmitted on antenna ports by the eNB, a reference signal transmitted on a minimum antenna port among the antenna ports is used for a demodulation of the control information.

公开(公告)号：US09974067B2

公开(公告)日：2018-05-15

申请号：US14460969

申请日：2014-08-15

Applicant: LG Electronics Inc.

Inventor： Min Seok Noh ,  Seung Hee Han ,  Jae Hoon Chung

IPC: H04W72/04 ,  H04L5/00 ,  H04L25/02 ,  H04W24/10 ,  H04W72/00

CPC classification number: H04W72/042 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0226 ,  H04W24/10 ,  H04W72/00

Abstract: A method for transmitting, by a user equipment (UE), an aperiodic sounding reference signal (SRS) in a wireless communication system, the method including receiving, via a physical downlink control channel (PDCCH), downlink control information (DCI) for downlink scheduling. The DCI includes an SRS request for triggering transmission of the aperiodic SRS. The method further includes detecting the SRS request; and transmitting the aperiodic SRS on an uplink (UL) component carrier (CC), which is linked to a downlink (DL) CC in which a physical downlink shared channel (PDSCH) is scheduled by the DCI, among a plurality of UL CCs. If a carrier indicator field (CIF) is configured, the UL CC is indicated by the CIF.

公开(公告)号：US09906387B2

公开(公告)日：2018-02-27

申请号：US14981573

申请日：2015-12-28

Applicant: LG Electronics Inc.

Inventor： Yeong Hyeon Kwon ,  Seung Hee Han ,  Min Seok Noh ,  Young Woo Yun

IPC: H04L27/26 ,  H04W72/04 ,  H04L27/34

CPC classification number: H04L27/2604 ,  H04L27/262 ,  H04L27/2621 ,  H04L27/3483 ,  H04L27/3488 ,  H04W72/0446

Abstract: An apparatus for receiving signals includes a receiver for receiving a time domain signal from a transmitter, wherein at least one first information bit is mapped, resulting in at least one first mapped symbol; at least one second information bit is mapped, resulting in at least one second mapped symbol; the at least one second mapped symbol is multiplied by at least one third information bit; and the time domain signal is generated from the at least one first mapped symbol and the at least one second mapped symbol.