公开(公告)号：US10326503B2

公开(公告)日：2019-06-18

申请号：US15243636

申请日：2016-08-22

Applicant: LG Electronics Inc.

Inventor： Moon Il Lee ,  Hyun Soo Ko ,  Bin Chul Ihm ,  Wook Bong Lee ,  Jae Hoon Chung ,  Jin Young Chun

IPC: H04B7/0456 ,  H04B7/0417 ,  H04B7/06 ,  H04L1/00 ,  H04L1/06 ,  H04L5/00 ,  H04L25/06 ,  H04W72/04 ,  H04L27/26 ,  H04L1/16

Abstract: A method for efficiently transmitting and receiving downlink control information is disclosed. The method includes, at a base station, receiving feedback information including a precoding matrix index (PMI) from a user equipment (UE) and transmitting precoding information having a predetermined bit number according to the number of antenna ports and a transmission mode of the base station. The precoding information of a predetermined transmission mode in the precoding information includes confirmation information indicating that the base station uses a PMI which is recently received from the UE.

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：US10211963B2

公开(公告)日：2019-02-19

申请号：US16049270

申请日：2018-07-30

Applicant: LG ELECTRONICS INC.

Inventor： Yeong Hyeon Kwon ,  Jae Hoon Chung ,  Seung Hee Han ,  So Yeon Kim

IPC: H04L1/16 ,  H04L1/18 ,  H04W72/04 ,  H04L5/00 ,  H04W72/12 ,  H04L1/00

Abstract: A method of generating Acknowledgement/Negative Acknowledgement (ACK/NACK) information by a user equipment (UE) in a wireless communication system supporting carrier aggregation, the method including receiving, by the UE from a base station (BS), a plurality of codewords through a plurality of downlink frequency bands corresponding to a plurality of downlink carriers, wherein each of the plurality of downlink frequency bands operates in a 1-codeword mode or a 2-codeword mode, and a number of supported codewords according to the 1-codeword mode or the 2-codeword mode is independently configured for each of the downlink frequency bands, determining, by the UE, a total number of ACK/NACK bits, wherein the total number of ACK/NACK bits is determined based on a total number of the plurality of downlink carriers and the number of supported codewords according to the 1-codeword mode or the 2-codeword mode and generating, by the UE, a sequence of the ACK/NACK bits according to the total number of the ACK/NACK bits.

公开(公告)号：US10172134B2

公开(公告)日：2019-01-01

申请号：US15594125

申请日：2017-05-12

Applicant: LG ELECTRONICS INC.

Inventor： Jae Hoon Chung ,  So Yeon Kim ,  Sungho Moon ,  Seunghee Han ,  Yeong Hyeon Kwon

IPC: H04L5/00 ,  H04W72/04 ,  H04J11/00 ,  H04L1/00 ,  H04W72/14 ,  H04W72/12 ,  H04W88/08

Abstract: Embodiments of the present invention are directed to a method and apparatus for transmitting and receiving a control signal (for example, PDCCH signal) in an asymmetric multicarrier environment. The method for transmitting a control signal for an asymmetric multicarrier in a wireless connection system according to one embodiment of the present invention comprises: determining the size of a carrier indicator field (CIF) indicating a downlink component carrier (DL CC) by which downlink data is transmitted, on the basis of a maximum value of the number of DL CCs and of the number of uplink component carriers (UL CCs) being managed in a base station; transmitting the CIF on a 1st DL CC to a terminal through a physical downlink control channel (PDCCH); and transmitting downlink data on a 2nd DL CC indicated by the CIF to the terminal through a physical downlink shared channel (PDSCH).

公开(公告)号：US10015786B2

公开(公告)日：2018-07-03

申请号：US15716051

申请日：2017-09-26

Applicant: LG ELECTRONICS INC.

Inventor： Moon Il Lee ,  Wook Bong Lee ,  Jae Hoon Chung ,  Hyun Soo Ko ,  Bin Chul Ihm

IPC: H04B7/06 ,  H04W72/04 ,  H04B7/0452 ,  H04L25/03 ,  H04L5/00 ,  H04J11/00 ,  H04W88/08 ,  H04W52/32 ,  H04W52/14 ,  H04B7/0413

CPC classification number: H04W72/042 ,  H04B7/0413 ,  H04B7/0452 ,  H04B7/0689 ,  H04J11/0026 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/03343 ,  H04L27/261 ,  H04W52/143 ,  H04W52/325 ,  H04W88/08

Abstract: A technique for receiving and transmitting downlink reference signals is disclosed. When transmitting downlink data demodulation reference signals (DMRS) (or reference signals for downlink data demodulation) by using two or more layers, the DMRS of each layer may be multiplexed by using a code division multiplexing method and then transmitted. The DMRS for each of the two or more layers may be used for one user equipment or for two or more user equipments. And, downlink control signals for transmitting and receiving such DMRS may be configured to have the same format regardless of a single-user mode (or SU-MIMO mode) or a multi-user mode (or MU-MIMO mode), thereby being used.

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：US09967862B2

公开(公告)日：2018-05-08

申请号：US14875296

申请日：2015-10-05

Applicant: LG ELECTRONICS INC.

Inventor： So Yeon Kim ,  Sung Ho Moon ,  Jae Hoon Chung ,  Yeong Hyeon Kwon ,  Han Gyu Cho

IPC: H04W4/00 ,  H04W72/04 ,  H04L5/00 ,  H04L27/26 ,  H04W24/08 ,  H04W88/02

CPC classification number: H04W72/0406 ,  H04L5/0007 ,  H04L5/0035 ,  H04L5/0053 ,  H04L5/0062 ,  H04L27/2602 ,  H04W24/08 ,  H04W88/02

Abstract: A method for monitoring a control channel in a multiple carrier system, and a user equipment (UE) therefore are discussed. The method according to one embodiment includes, if an aggregation of carriers is configured and if a carrier indicator field (CIF) is configured, monitoring a plurality of downlink control channels within a plurality of UE-specific search spaces of a first carrier; and receiving downlink control information (DCI) on at least one of the plurality of the downlink control channels, which is successfully decoded, via the first carrier. The DCI includes scheduling information on either a downlink channel or an uplink channel in a second carrier.

公开(公告)号：US09948442B2

公开(公告)日：2018-04-17

申请号：US14489123

申请日：2014-09-17

Applicant: LG ELECTRONICS INC.

Inventor： Seung Hee Han ,  Sung Ho Moon ,  Jae Hoon Chung ,  Moon Il Lee ,  Yeong Hyeon Kwon

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

CPC classification number: H04L5/0053 ,  H04J11/005 ,  H04J13/004 ,  H04J13/0062 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0055 ,  H04L5/0057 ,  H04L27/2636 ,  H04L27/2697

Abstract: A method for transmitting control information via a PUCCH in a wireless communication system and an apparatus for performing the method are provided, the method including joint-coding a plurality of pieces of control information to obtain a single code word; obtaining a first modulated symbol sequence from the single code word; obtaining a plurality of second modulated symbol sequences corresponding to each slot in the PUCCH from the first modulated symbol sequence; cyclically shifting the plurality of second modulated symbol sequences in a time domain to obtain a plurality of third modulated symbol sequences; performing a Discrete Fourier Transform (DFT) precoding process on the plurality of third modulated symbol sequences to obtain a plurality of complex symbol sequences in a frequency domain; and transmitting the plurality of complex symbol sequences via the PUCCH.