公开(公告)号：US20200163065A1

公开(公告)日：2020-05-21

申请号：US16750590

申请日：2020-01-23

Applicant: LG ELECTRONICS INC.

Inventor： Min Seok NOH ,  MOON IL LEE ,  Jae Hoon CHUNG ,  Sung Ho MOON ,  Seung Hee HAN

IPC: H04W72/04 ,  H04L5/14 ,  H04L27/26 ,  H04J3/00 ,  H04B7/06 ,  H04J11/00 ,  H04L5/00

Abstract: A method for a user equipment (UE) in a wireless communication system, includes receiving channel state information reference signal (CSI-RS) for at one antenna port from a network in a subframe, wherein the CSI-RS is mapped to at least one pair of resource elements (REs) per physical resource block (PRB) pair in consecutive orthogonal frequency division multiplexing (OFDM) symbols in the subframe, and wherein the subframe includes two slots, and each slot includes six OFDM symbols based on an extended cyclic prefix (CP).

公开(公告)号：US20200153490A1

公开(公告)日：2020-05-14

申请号：US16739857

申请日：2020-01-10

Applicant: LG ELECTRONICS INC.

Inventor： Hyun Soo KO ,  Jae Hoon CHUNG ,  Seung Hee HAN ,  Moon Il LEE

IPC: H04B7/0456 ,  H04B7/06 ,  H04L25/03 ,  H04L27/26 ,  H04W72/02 ,  H04W72/04

Abstract: The present invention relates to a method for transmitting, by a base station, a downlink signal using a plurality of transmission antennas comprises the steps of: applying a precoding matrix indicated by the PMI, received from a terminal, in a codebook to a plurality of layers, and transmitting the precoded signal to the terminal through a plurality of transmission antennas. Among precoding matrices included in the codebook, a precoding matrix for even number transmission layers can be a 2×2 matrix containing four matrices (W1s), the matrix (W1) having rows of a number of transmission antennas and columns of half the number of transmission layers, the first and second columns of the first row in the 2×2 matrix being multiplied by 1, the first column of the second row being multiplied by coefficient “a” of a phase, and the first column of the second row being multiplied by “−a”.

公开(公告)号：US20190223173A1

公开(公告)日：2019-07-18

申请号：US16363573

申请日：2019-03-25

Applicant: LG ELECTRONICS INC.

Inventor： So Yeon KIM ,  Sung Ho MOON ,  Jae Hoon CHUNG ,  Yeong Hyeon KWON ,  Han Gyu CHO

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

Abstract: A method for monitoring a downlink control channel, is performed by a user equipment (UE) configured with multiple carriers and includes receiving information on carrier index, determining a plurality of UE-specific search spaces for monitoring the downlink control channel, and monitoring the downlink control channel within the plurality of UE-specific search spaces, wherein location of each of the plurality of the UE-specific search spaces is determined based on the carrier index.

公开(公告)号：US20180302146A1

公开(公告)日：2018-10-18

申请号：US16011190

申请日：2018-06-18

Applicant: LG Electronics Inc.

Inventor： Kyu Jin PARK ,  Jae Hoon CHUNG ,  Han Gyu CHO ,  Yeong Hyeon KWON ,  Sung Ho MOON

IPC: H04B7/155 ,  H04L27/26 ,  H04L5/00 ,  H04B7/26

CPC classification number: H04B7/155 ,  H04B7/2606 ,  H04L5/0007 ,  H04L5/0053 ,  H04L5/0094 ,  H04L27/26 ,  H04L27/2602

Abstract: A method for receiving data by a relay station (RS) in a wireless communication system includes: receiving radio resource allocation information via an R-PDCCH (R-Physical Downlink Control Channel); and receiving data from a base station (BS) via an R-PDSCH (R-Physical Downlink Shared Channel) indicated by the radio resource allocation information, wherein the radio resource allocation information includes information regarding an allocation of resource blocks in a frequency domain and information regarding an allocation of OFDM symbols in a time domain. Since the radio resource allocation information providing information regarding a time relationship between a control channel transmitted by the BS to a UE and a control channel transmitted by the RS to a UE connected to the RS is provided, the RS can reliably receive a signal transmitted from the BS in a backhaul link between the BS and the RS in a wireless communication system including the RS.

公开(公告)号：US20180234962A1

公开(公告)日：2018-08-16

申请号：US15952503

申请日：2018-04-13

Applicant: LG ELECTRONICS INC.

Inventor： So Yeon KIM ,  Sung Ho MOON ,  Jae Hoon CHUNG ,  Yeong Hyeon KWON ,  Han Gyu CHO

IPC: H04W72/04 ,  H04L27/26 ,  H04L5/00 ,  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 downlink control channel, the method performed by a user equipment (UE) configured with multiple carriers includes determining whether to monitor the downlink control channel within either one UE-specific search space or a plurality of UE-specific search spaces, and monitoring the downlink control channel within the plurality of UE-specific search spaces if carrier index is configured, wherein each of the plurality of the UE-specific search spaces is determined based on the carrier index.

公开(公告)号：US20180191477A1

公开(公告)日：2018-07-05

申请号：US15910727

申请日：2018-03-02

Applicant: LG ELECTRONICS INC.

Inventor： Seung Hee HAN ,  Sung Ho MOON ,  Jae Hoon CHUNG ,  Moon Il LEE ,  Yeong Hyeon KWON

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

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.

公开(公告)号：US20170237533A1

公开(公告)日：2017-08-17

申请号：US15584914

申请日：2017-05-02

Applicant: LG ELECTRONICS INC.

Inventor： Moon Il LEE ,  Jae Hoon CHUNG ,  Hyun Soo KO ,  Seung Hee HAN

IPC: H04L5/00 ,  H04W72/04 ,  H04J11/00

CPC classification number: H04L5/0007 ,  H04J11/00 ,  H04J2011/0096 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0073 ,  H04L5/0082 ,  H04L5/0091 ,  H04W72/042

Abstract: A base station does not transmit any reference signal (RS) for channel measurement in a subframe in which transmission of an RS collides with transmission of a synchronization signal or a broadcast signal or in a resource block including the synchronization signal or the broadcast signal in the subframe. A user equipment assumes that any RS for channel measurement is not transmitted in a subframe or in a resource block when transmission of an RS collides with transmission of a synchronization signal or a broadcast signal in the subframe or in the resource block.

公开(公告)号：US20170222781A1

公开(公告)日：2017-08-03

申请号：US15491593

申请日：2017-04-19

Applicant: LG ELECTRONICS INC.

Inventor： Seung Hee HAN ,  Jae Hoon CHUNG ,  Sung Ho MOON ,  Moon Il LEE

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

CPC classification number: H04L5/0055 ,  H04L1/0026 ,  H04L1/0057 ,  H04L1/0059 ,  H04L1/0073 ,  H04L1/1671 ,  H04L1/1819 ,  H04L1/1854 ,  H04L1/1893 ,  H04L5/0007 ,  H04L5/001 ,  H04L5/0016 ,  H04L5/0053 ,  H04L27/2634 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0473

Abstract: The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for transmitting acknowledgement/negative ACK (ACK/NACK) in a wireless communication system which supports carrier aggregation, and to an apparatus for the method. A method in which a terminal transmits ACK/NACK in a wireless communication system that supports carrier aggregation comprises the following steps: receiving a physical downlink control channel (PDCCH); receiving a physical downlink shared channel (PDSCH) indicated by the PDCCH; and transmitting ACK/NACK for the PDSCH via a physical uplink control channel (PUCCH). A PUCCH format for transmitting ACK/NACK is selected by taking the number of aggregated carriers into account.

公开(公告)号：US20170134133A1

公开(公告)日：2017-05-11

申请号：US15402639

申请日：2017-01-10

Applicant: LG ELECTRONICS INC.

Inventor： Min Seok NOH ,  Jae Hoon CHUNG ,  Seung Hee HAN

IPC: H04L5/00 ,  H04W72/04

CPC classification number: H04L5/0051 ,  H04B7/155 ,  H04J1/02 ,  H04L5/0007 ,  H04L5/001 ,  H04L5/0048 ,  H04L5/0053 ,  H04W72/0413 ,  H04W72/0453 ,  H04W88/02 ,  H04W88/08

Abstract: A method for transmitting a physical uplink shared channel (PUSCH) by a user equipment in a wireless communication system, the method comprising: when transmission of a first physical uplink shared channel (PUSCH) on a first component carrier (CC) and transmission of a sounding reference signal (SRS) on a second CC coincide, transmitting the first PUSCH to a base station via a first subframe on the first CC, wherein the SRS is not transmitted at a last symbol of a second subframe on the second CC and the first PUSCH is transmitted at a last symbol of the first subframe on the first CC, and wherein the first subframe on the first CC and the second subframe on the second CC are aligned in time.

公开(公告)号：US20170126386A1

公开(公告)日：2017-05-04

申请号：US15407919

申请日：2017-01-17

Applicant: LG ELECTRONICS INC.

Inventor： Jae Hoon CHUNG ,  Hyun Woo LEE ,  Young Hyoun KWON ,  Ji Woong JANG ,  Seung Hee HAN

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

CPC classification number: H04L5/0055 ,  H04L1/0029 ,  H04L1/16 ,  H04L1/1607 ,  H04L1/1614 ,  H04L1/1621 ,  H04L1/1664 ,  H04L1/1671 ,  H04L5/001 ,  H04L5/0057 ,  H04W28/04 ,  H04W72/04 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/1268

Abstract: A method for receiving ACK/NACK (Acknow1edge/Negative ACK) information at a base station in a wireless communication system, the method includes configuring a plurality of carriers for downlink signal transmission; transmitting downlink signals including a semi-persistent scheduled downlink signal through the plurality of carriers; and receiving an ACK/NACK payload for the plurality of carriers, the ACK/NACK payload including a plurality of concatenated ACK/NACK sets, wherein each ACK/NACK set is associated with a respective one of the plurality of carriers and has one or more ACK/NACK bits, wherein the ACK/NACK payload includes an ACK/NACK bit for the semi-persistent scheduled downlink signal, and the ACK/NACK bit for the semi-persistent scheduled downlink signal is positioned at an end of a corresponding ACK/NACK set.