公开(公告)号：US11569846B2

公开(公告)日：2023-01-31

申请号：US17148049

申请日：2021-01-13

Applicant: LG ELECTRONICS INC.

Inventor： Jongseob Baek ,  Jongwoong Shin ,  Jaehyung Kim ,  Woosuk Ko ,  Sungryong Hong

IPC: H04L27/26 ,  H03M13/27 ,  H04L1/00 ,  H04L5/00 ,  H03M13/09 ,  H03M13/11 ,  H03M13/15 ,  H03M13/25 ,  H03M13/29

Abstract: A method and an apparatus for transmitting broadcast signals thereof are disclosed. The apparatus for transmitting broadcast signals comprises an encoder for encoding service data, a mapper for mapping the encoded service data into a plurality of OFDM (Orthogonal Frequency Division Multiplex) symbols to build at least one signal frame, a frequency interleaver for frequency interleaving data in the at least one signal frame by using a different interleaving-seed which is used for every OFDM symbol pair comprised of two sequential OFDM symbols, a modulator for modulating the frequency interleaved data by an OFDM scheme and a transmitter for transmitting the broadcast signals having the modulated data, wherein the different interleaving-seed is generated based on a cyclic shifting value and wherein an interleaving seed is variable based on an FFT size of the modulating.

公开(公告)号：US20220394680A1

公开(公告)日：2022-12-08

申请号：US17265548

申请日：2019-08-09

Applicant: LG ELECTRONICS INC.

Inventor： Jaehyung Kim ,  Seonwook Kim ,  Changhwan Park ,  Seokmin Shin ,  Joonkui Ahn ,  Suckchel Yang ,  Seunggye Hwang

IPC: H04W72/04

Abstract: The present specification discloses an invention relating to a method for transmitting an MTC physical downlink control channel (MPDCCH) by a base station in a wireless communication system supporting machine type communication (MTC). According to the present invention, a base station transmits, to a terminal, configuration information related to the transmission of an MPDCCH and maps the MPDCCH onto multiple resource elements (REs) of at least one first symbol constituting a first slot of a special subframe. The special subframe is a subframe in which, among symbols constituting the subframe, the number of symbols for data transmission is smaller than or equal to a predetermined number. The base station transmits the MPDCCH to the terminal over the multiple resource elements, wherein the mapping step is performed by copying at least one second symbol of a second slot adjacent to the first slot onto the at least one first symbol.

公开(公告)号：US11486080B2

公开(公告)日：2022-11-01

申请号：US16957772

申请日：2018-12-07

Applicant: LG ELECTRONICS INC.

Inventor： Hyungha Kang ,  Jaehyung Kim ,  Semin Jang ,  Joosik Jung

IPC: D06F58/20 ,  D06F58/10 ,  D06F58/12 ,  D06F69/00 ,  D06F73/02 ,  B06B1/14

Abstract: A clothing treatment apparatus includes a frame, a hanger body movable relative to the frame, a vibrating body including a predetermined central axis, a first eccentric portion supported by the vibrating body and capable of rotating about a first rotation axis spaced apart from the central axis, a second eccentric portion supported by the vibrating body and rotatable about a second rotation axis spaced apart from the central axis, and a hanger driving unit disposed in the vibrating body and connected to the hanger body at a position spaced apart from the central axis. Centrifugal forces of the first and second eccentric portions with respect to the first and second rotation axes, respectively, reinforce each other when the vibrating body generates a rotational force about the central axis, and oppose each other when the vibrating body does not generate the rotational force.

公开(公告)号：US20220272513A1

公开(公告)日：2022-08-25

申请号：US17629328

申请日：2020-07-23

Applicant: LG ELECTRONICS INC.

Inventor： Changhwan Park ,  Jaehyung Kim ,  Hyunjung Choe ,  Joonkui Ahn

IPC: H04W4/90 ,  H04W76/28 ,  H04W74/08 ,  H04W4/70

Abstract: The present specification proposes a method for transmitting or receiving emergency information in a wireless communication system supporting machine type communication and a device therefor. Specifically, the method performed by a terminal may comprise the steps of: receiving discontinuous reception (DRX)-related information from a base station through radio resource control (RRC) signaling; receiving a paging message from the base station on the basis of the DRX-related information; and transmitting a physical random access channel (PRACH) preamble to the base station on the basis of the paging message emergency.

公开(公告)号：US11277236B2

公开(公告)日：2022-03-15

申请号：US16325061

申请日：2017-08-11

Applicant: LG Electronics Inc.

Inventor： Jaehyung Kim ,  Joonkui Ahn ,  Hyunsoo Ko ,  Byounghoon Kim ,  Yunjung Yi

IPC: H04W72/04 ,  H04L5/00

Abstract: Disclosed are a method for mutually transmitting or receiving a downlink signal by a terminal and a base station in a wireless communication system and a device for supporting the same. More particularly, disclosed are a method for transmitting or receiving a signal and a device for supporting the same, in which when a subcarrier interval rapidly changes in a continuous time area, such as a multi-media broadcast multicast service single frequency network (MBSFN), a receiver can more reliably receive a signal (for example: a data signal) transmitted in a resource area where the subcarrier interval has rapidly changed.

公开(公告)号：US11246151B2

公开(公告)日：2022-02-08

申请号：US16638699

申请日：2018-08-22

Applicant: LG Electronics Inc.

Inventor： Changhwan Park ,  Jaehyung Kim ,  Joonkui Ahn

IPC: H04W72/12 ,  G16Y10/75 ,  G16Y20/30 ,  H04L5/00 ,  H04W72/04 ,  H04W74/08

Abstract: The present invention relates to a wireless communication system and, in particular, to a method and an apparatus therefor, the method comprising the steps of: receiving uplink scheduling information from a base station; and repeatedly transmitting a PUSCH according to the uplink scheduling information, wherein, when repeated transmission of the PUSCH is performed in a PRACH transmission gap, the repeated transmission of the PUSCH in the PRACH transmission gap is at least partially dropped or delayed.

公开(公告)号：US11165618B2

公开(公告)日：2021-11-02

申请号：US16928394

申请日：2020-07-14

Applicant: LG ELECTRONICS INC.

Inventor： Jaehyung Kim ,  Woosuk Ko ,  Sungryong Hong

IPC: H04L27/26 ,  H04B1/00 ,  H04B7/00 ,  H04L27/22 ,  H04L5/00

Abstract: A method for transmitting a broadcast signal includes encoding service data; encoding signaling data; building one or more signal frames including one or more data symbols carrying the encoded service data and one or more preamble symbols carrying the encoded signaling data; modulating the one or more preamble symbols and the one or more data symbols into one or more preamble Orthogonal Frequency Division Multiplex (OFDM) symbols and one or more data OFDM symbols by an OFDM scheme; normalizing average power of the one or more preamble OFDM symbols and the one or more data OFDM symbols in time domain using power normalization factors. Further, a power normalization factor for a preamble OFDM symbol is obtained using frequency domain total power of the preamble OFDM symbol in frequency domain, the frequency domain total power of the preamble OFDM symbol is 7737.10 when a Fast Fourier Transform (FFT) size is 8K, a guard interval length is 1024 samples, separation of scattered pilot bearing carriers is 3 carriers and carrier reduction (Cred) coefficient is 0 for the preamble OFDM symbol. The method also includes transmitting the broadcast signal having OFDM symbols including the one or more preamble OFDM symbols and the one or more data OFDM symbols.

公开(公告)号：US11121812B2

公开(公告)日：2021-09-14

申请号：US16789745

申请日：2020-02-13

Applicant: LG ELECTRONICS INC.

Inventor： Jongwoong Shin ,  Woosuk Ko ,  Jaehyung Kim ,  Jongseob Baek ,  Sungryong Hong

IPC: H04L1/00 ,  H04L27/26 ,  H04B1/10 ,  H04L12/18 ,  H04J11/00 ,  H04L1/04 ,  H04L5/00

Abstract: A broadcast signal transmitter includes a first bit interleaver to bit interleave core layer data of at least one core layer Physical Layer Pipe (PLP) for a core layer; a second bit interleaver to bit interleave enhanced layer data of at least one enhanced layer PLP for an enhanced layer; an injection level controller to control power ratio between the bit-interleaved core layer data and the bit-interleaved enhanced layer data; a combiner to combine the core layer data and the enhanced layer data which the power ratio is controlled and to output Layered Division Multiplexing (LDM) data; a power normalizer to normalize power of the LDM data; a time interleaver to perform time-interleaving on the LDM data which the power is normalized; a framer to generate a signal frame comprising a preamble and the time-interleaved LDM data; and a modulator to perform Orthogonal Frequency Division Multiplexing modulation on the signal frame.

公开(公告)号：US11032797B2

公开(公告)日：2021-06-08

申请号：US16447327

申请日：2019-06-20

Applicant: LG ELECTRONICS INC.

Inventor： Jaeho Hwang ,  Byounggill Kim ,  Woochan Kim ,  Jaehyung Kim ,  Sungryong Hong ,  Chulkyu Mun ,  Jinyong Choi ,  Jongseob Baek ,  Kookyeon Kwak ,  Woosuk Ko

IPC: H04W72/00 ,  H04W28/06 ,  H04H20/72 ,  H04L1/06 ,  H04L1/00 ,  H04L5/00 ,  H04L27/26 ,  H04L29/06

Abstract: A method and an apparatus for transmitting broadcast signals thereof are disclosed. The apparatus for transmitting broadcast signals comprises an input formatter to format at least one input stream to output DP (Data Pipe) data corresponding to each of a plurality of DPs, wherein the each of a plurality of DPs carries at least one service or at least one service component, an encoder to encode the DP data, a mapper to map the encoded DP data onto constellations, a time interleaver to time interleave the mapped DP data, a frame builder to build at least one signal frame including the time interleaved DP data, a modulator to modulate data in the built at least one signal frame by an OFDM (Orthogonal Frequency Division Multiplex) scheme and a transmitter to transmit the broadcast signals having the modulated data.

公开(公告)号：US10999112B2

公开(公告)日：2021-05-04

申请号：US16677242

申请日：2019-11-07

Applicant: LG ELECTRONICS INC.

Inventor： Byounggill Kim ,  Jaehyung Kim ,  Jaeho Hwang ,  Woosuk Ko ,  Sungryong Hong

IPC: H04W4/00 ,  H04L27/26 ,  H04L5/00 ,  H04L1/00 ,  H04W4/06

Abstract: The present invention provides a method of transmitting broadcast signals. The method includes encoding service data of Physical Layer Pipes (PLPs); bit interleaving the encoded service data; building at least one signal frame including the bit interleaved service data; and modulating data in the at least one signal frame by Orthogonal Frequency Division Multiplexing (OFDM) method; inserting a preamble at a beginning of each of the at least one signal frame after the modulating step; and transmitting the broadcast signals having the modulated data, wherein the preamble includes two OFDM symbols and each of the two OFDM symbols is generated by a sequence multiplication, and wherein each of the two OFDM symbols in the preamble includes information for an emergency alert.