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：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：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：US09906341B2

公开(公告)日：2018-02-27

申请号：US15167097

申请日：2016-05-27

Applicant: LG ELECTRONICS INC.

Inventor： Ja Ho Koo ,  Seung Hee Han ,  Hyun Soo Ko ,  Jae Hoon Chung ,  Bin Chul Ihm ,  Moon Il Lee

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

CPC classification number: H04L5/0035 ,  H04L5/0048 ,  H04L25/0226 ,  H04L27/2613 ,  H04W72/042

Abstract: A method of generating reference signals by a base station in a wireless communication system is disclosed. The method including a sequence of a first reference signal using a cell identifier of the base station, transmitting, to a first user equipment (UE), a message including mode information indicating a first mode for a coordinated multi-point (CoMP) operation and a predetermined identifier being different from the cell identifier of the base station and generating a sequence of a second reference signal for the first UE using the predetermined identifier instead of the cell identifier of the base station.

公开(公告)号：US09871633B2

公开(公告)日：2018-01-16

申请号：US15336003

申请日：2016-10-27

Applicant: LG ELECTRONICS INC.

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

IPC: H04L5/00 ,  H04L25/02 ,  H04W72/04 ,  H04J11/00 ,  H04L27/26

CPC classification number: H04L5/0048 ,  H04J11/0069 ,  H04L5/0007 ,  H04L5/0016 ,  H04L5/0023 ,  H04L5/0051 ,  H04L5/0053 ,  H04L5/0091 ,  H04L25/0226 ,  H04L27/2601 ,  H04L27/2602 ,  H04L27/2607 ,  H04L27/2613 ,  H04L27/2662 ,  H04W72/042 ,  H04W72/0446

Abstract: The present invention relates to a method for transmitting a data demodulation reference signal in a radio mobile communication system. The method comprises: a step for generating a sub-frame including the data demodulation reference signal, and a step for transmitting the generated sub-frame. The 1st and 2nd demodulation reference signal pattern groups include plural demodulation signal patterns orthogonal to each other, and are differentiated from each other with regard to time-frequency resources. In the data demodulation reference signal, demodulation reference signal patterns which are respectively orthogonal to each other M (M≦N) and N−M times are respectively included in the 1st and 2nd demodulation reference signal pattern groups if the rank is N.

公开(公告)号：US09794924B2

公开(公告)日：2017-10-17

申请号：US14852807

申请日：2015-09-14

Applicant: LG ELECTRONICS INC.

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

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

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：US09788312B2

公开(公告)日：2017-10-10

申请号：US14798916

申请日：2015-07-14

Applicant: LG ELECTRONICS INC.

Inventor： Hyun Soo Ko ,  Moon Il Lee ,  Ja Ho Koo ,  Jae Hoon Chung ,  Bin Chul Ihm

IPC: H04W72/04 ,  H04B7/04 ,  H04B7/0413 ,  H04W88/02 ,  H04W88/08

CPC classification number: H04W72/042 ,  H04B7/04 ,  H04B7/0413 ,  H04W88/02 ,  H04W88/08

Abstract: A method and apparatus for transmitting a downlink signal in a multiple input multiple output (MIMO) wireless communication system is disclosed. A method for receiving a downlink signal from a base station to a user equipment in a multiple input multiple output (MIMO) system, which supports dual layer transmission based on first and second antenna ports, comprises receiving downlink control information (DCI) through a downlink control channel; and receiving downlink data through a downlink data channel, the downlink data including one or more of a first transport block and a second transport block, wherein the downlink control information includes a new data indicator (NDI) for each of the first and second transport blocks, and if the first transport block is disabled and the second transport block is enabled, the new data indicator for the first transport block indicates an antenna port through which the second transport block is received.

公开(公告)号：US09729290B2

公开(公告)日：2017-08-08

申请号：US14599097

申请日：2015-01-16

Applicant: LG ELECTRONICS INC.

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

IPC: H04L5/00 ,  H04B7/06 ,  H04J13/16 ,  H04L25/02 ,  H04L27/26 ,  H04W72/04 ,  H04J13/00

CPC classification number: H04L5/0048 ,  H04B7/0613 ,  H04B7/0684 ,  H04J13/0074 ,  H04J13/16 ,  H04L5/0026 ,  H04L5/0051 ,  H04L25/022 ,  H04L25/0226 ,  H04L27/261 ,  H04L27/2613 ,  H04W72/042

Abstract: Provided is a method for transmitting, by a user equipment (UE), a demodulation reference signal (DMRS) for a physical uplink shared channel (PUSCH) in a wireless communication system. A terminal receives a cyclic shift field, which indicates a first value and a second value, through a physical downlink control channel (PDCCH) from a base station, generates a first DMRS sequence and a second DMRS sequence, which are associated with a first layer and a second layer respectively, by using a first cyclic shift and a second cyclic shift, respectively, which are determined based on the first value and the second value respectively, and transmits the first DMRS sequence and the second DMRS sequence to the base station. Furthermore, the first value and the second value are separated by a maximum value corresponding to a total number of possible cyclic shifts.

公开(公告)号：US09729288B2

公开(公告)日：2017-08-08

申请号：US13939094

申请日：2013-07-10

Applicant: LG ELECTRONICS INC.

Inventor： Jae Hoon Chung ,  So Yeon Kim ,  Yeong Hyeon Kwon ,  Hyun Soo Ko ,  Seung Hee Han ,  Moon Il Lee

IPC: H04W4/00 ,  H04L5/00 ,  H04W72/04 ,  H04L25/02 ,  H04L27/26 ,  H04L1/06 ,  H04L1/18 ,  H04W74/00

CPC classification number: H04L5/0048 ,  H04L1/06 ,  H04L1/1812 ,  H04L1/1861 ,  H04L5/0026 ,  H04L5/0051 ,  H04L5/0055 ,  H04L25/0226 ,  H04L27/2613 ,  H04W72/042 ,  H04W74/004

Abstract: The present invention relates to a method for generating an uplink reference signal in a system supporting plural uplink-access transmission modes. The method comprises: a step for transmitting the reference signal configuration information about the configuration of a reference signal from a base station to a user device through an uplink grant PDCCH (Physical Downlink Control Channel), and a step for receiving from the user device a sub-frame including the reference signal that is generated based on the reference signal configuration information. The reference signal configuration information is prepared for plural uplink access transmission modes and includes a cyclic shift value for the sequence of the reference signal. The reference signal is supposed to be transmitted to an uplink, and the user device is set up to be operated in the uplink-access transmission mode that corresponding to the reference signal configuration information.