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：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：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：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.

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.

公开(公告)号：US09794039B2

公开(公告)日：2017-10-17

申请号：US14812939

申请日：2015-07-29

Applicant: LG ELECTRONICS INC.

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

IPC: H04W4/00 ,  H04L5/00 ,  H04J11/00 ,  H04L1/18 ,  H04W72/04

CPC classification number: H04L5/0048 ,  H04J11/005 ,  H04L1/1893 ,  H04L5/0007 ,  H04L5/0016 ,  H04L5/0021 ,  H04L5/005 ,  H04L5/0051 ,  H04L5/0053 ,  H04L5/0055 ,  H04L5/0073 ,  H04W72/0413

Abstract: A method for transmitting a reference signal by a user equipment (UE) in a wireless communication system. The UE generates an uplink reference signal in a subframe comprising first, second, third, fourth, fifth, sixth and seventh orthogonal frequency division multiplexing (OFDM) symbols in time domain and a plurality of subcarriers in frequency domain. The UE transmits the uplink reference signal to a base station in the third, fourth and fifth OFDM symbols. The transmitted uplink reference signal is hopped in the frequency domain, based on a cell specific hopping parameter.

公开(公告)号：US09781711B2

公开(公告)日：2017-10-03

申请号：US14694503

申请日：2015-04-23

Applicant: LG ELECTRONICS INC.

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

IPC: H04W4/00 ,  H04W72/04 ,  H04L5/00

CPC classification number: H04W72/042 ,  H04L5/001 ,  H04L5/0037 ,  H04L5/0053 ,  H04L5/006 ,  H04L5/0092 ,  H04W72/0406 ,  H04W72/0453

Abstract: The present invention relates to wideband wireless access system, and more particularly to an effective method for transmitting control information during the combination of multiple carriers. As one embodiment of the present invention, there is provided a method by which a base station allocates a carrier to a terminal in a wideband wireless access system supporting multiple carriers, the method comprising: transmitting, to the terminal, a terminal specific or terminal group specific carrier allocation information that includes information about at least one of control information and data; and transmitting, to the terminal, a carrier combination control information that includes information about a change in the at least one candidate carrier available.