公开(公告)号：US11064497B2

公开(公告)日：2021-07-13

申请号：US16494127

申请日：2018-03-15

Applicant: LG ELECTRONICS INC.

Inventor： Seokmin Shin ,  Jaehyung Kim ,  Joonkui Ahn ,  Seunggye Hwang

IPC: H04W72/04 ,  H04W4/70 ,  H04W4/80 ,  H04L1/18

Abstract: Disclosed are a method for transmitting/receiving data in a wireless communication system supporting NarrowBand-Internet of Things (NB-IoT) and a device therefor. Specifically, a method for receiving data by a terminal may include: receiving, from a base station, Semi-Persistent Scheduling (SPS) configuration information for SPS; receiving, from the base station, an SPS control channel for delivering control information representing activation of the SPS; and receiving, from the base station, SPS data channels in specific subframes scheduled according to the SPS configuration information, in which search spaces related to the remaining SPS data channels other than a first SPS data channel among the received SPS data channels may be configured not to be monitored by the UE.

公开(公告)号：US10925021B2

公开(公告)日：2021-02-16

申请号：US16711024

申请日：2019-12-11

Applicant: LG Electronics Inc.

Inventor： Seokmin Shin ,  Changhwan Park ,  Joonkui Ahn ,  Seunggye Hwang

IPC: H04W56/00 ,  H04J11/00 ,  H04L5/14

Abstract: Disclosed are a method for transmitting and receiving a synchronization signal in a wireless communication system supporting NarrowBand-Internet of Things (NB-IoT) and an apparatus therefor. Specifically, the method for transmitting and receiving a synchronization signal may include: receiving, from a base station, a narrowband synchronization signal; and performing a cell search procedure for the base station based on the narrowband synchronization signal, in which the narrowband synchronization signal may include a narrowband primary synchronization signal and a narrowband secondary synchronization signal, the narrowband primary synchronization signal and the narrowband secondary synchronization signal may be transmitted in different subframe, and the subframe in which the narrowband secondary synchronization signal is transmitted may be configured differently according to a type of a radio frame structure.

公开(公告)号：US10904861B2

公开(公告)日：2021-01-26

申请号：US16379288

申请日：2019-04-09

Applicant: LG Electronics Inc.

Inventor： Seunggye Hwang ,  Changhwan Park ,  Joonkui Ahn ,  Hanjun Park ,  Suckchel Yang ,  Sukhyon Yoon ,  Seokmin Shin

IPC: H04W68/02 ,  H04W52/02 ,  H04W84/12

Abstract: One disclosure in the present specification presents a method for a wireless device to receive a paging message. The method may comprise: a step of deciding a wake up signal occasion (WUSO) window for attempting to receive a wake up signal (WUS); and a step of monitoring a downlink control channel during a paging window so as to attempt to receive a paging message, if the WUS is received within the decided WUSO window. Here, the WUSO window may be decided according to a duration size and offset.

公开(公告)号：US10681660B2

公开(公告)日：2020-06-09

申请号：US16177992

申请日：2018-11-01

Applicant: LG ELECTRONICS INC.

Inventor： Hyunsoo Ko ,  Seokmin Shin ,  Bonghoe Kim ,  Yunjung Yi

IPC: H04W56/00 ,  H04L5/00 ,  H04L27/26 ,  H04W48/16 ,  H04W72/04 ,  H04J13/00

Abstract: A method and apparatus for transmitting and receiving narrowband (NB) synchronization signals. A base station transmits an NB secondary synchronization signal (SSS) indicating N NB cell identities assigned for NB Internet of Things (IoT) operation, a specific sequence generated by multiplying a base sequence with a cover sequence in element units is used for the NB SSS, wherein the base sequence is generated through a second Zadoff-Chu sequence having a length corresponding to a largest prime number less than a length L in a frequency domain, and the specific sequence is divisionally mapped to and transmitted in a plurality of orthogonal frequency division multiplexing (OFDM) symbols in elements each having a length M.

公开(公告)号：US20200178258A1

公开(公告)日：2020-06-04

申请号：US16625070

申请日：2018-06-27

Applicant: LG Electronics Inc.

Inventor： Changhwan Park ,  Joonkui Ahn ,  Seunggye Hwang ,  Seokmin Shin ,  Sukhyon Yoon

IPC: H04W72/04 ,  H04L5/00

Abstract: The present invention relates to a wireless communication system and, more particularly, to a method comprising the steps of: generating a first complex symbol sequence corresponding to one time unit including a plurality of transmission symbols; generating a second complex symbol sequence by applying primary scrambling to the first complex symbol sequence on a modulation symbol basis; and repeatedly transmitting the second complex symbol sequence through a plurality of time units, wherein secondary scrambling is applied to the signals in each time unit on a transmission symbol basis, the transmission symbol including an OFDMA symbol or an SC-FDMA symbol; and an apparatus therefor.

公开(公告)号：US10523353B2

公开(公告)日：2019-12-31

申请号：US15765236

申请日：2016-10-04

Applicant: LG ELECTRONICS INC.

Inventor： Bonghoe Kim ,  Kijun Kim ,  Hyunsoo Ko ,  Byounghoon Kim ,  Yunjung Yi ,  Seokmin Shin

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

Abstract: The present invention provides a method and devices for transmitting and receiving a synchronization signal and a method for generating a synchronization signal in a wireless access system supporting NB-IoT. A method for transmitting a narrowband secondary synchronization signal (N-SSS) by a base station in a wireless access system supporting NB-IoT, according to an embodiment of the present invention, can comprise the steps of: generating a first sequence having a size M so as to generate an N-SSS; generating a second sequence having a size M so as to generate an N-SSS; generating an N-SSS by means of the first sequence and second sequence; and transmitting the N-SSS by means of n OFDM symbols. The size of a bandwidth used in the wireless access system supporting NB-IoT is the size of one physical resource block (PRB), and one PRB can comprise twelve subcarriers in a frequency domain.

公开(公告)号：US10397889B2

公开(公告)日：2019-08-27

申请号：US15508463

申请日：2016-11-07

Applicant: LG ELECTRONICS INC.

Inventor： Seokmin Shin ,  Hyunsoo Ko ,  Yunjung Yi ,  Kunil Yum

IPC: H04W56/00 ,  H04L5/00 ,  H04W72/04 ,  H04L29/08

Abstract: A method for receiving system information in a wireless communication system supporting a Narrow Band (NB)-Internet of Things (IoT), the method performed by a terminal comprising: receiving a narrowband synchronization signal (NBSS) through a narrowband (NB) from a base station; acquiring, based on the NBSS, time synchronization and frequency synchronization with the base station; and receiving the system information related to the NB-IoT through a narrowband physical broadcast channel (N-PBCH) from the base station, wherein the system information includes at least one of operation mode information indicating an operation mode of an NB-IoT system or control information indicating an index of a legacy CRS (cell-specific reference signal) sequence, and wherein the control information is associated with a PRB (physical resource block) index of a PRB to which the legacy CRS is transmitted.

公开(公告)号：US10306576B2

公开(公告)日：2019-05-28

申请号：US15419978

申请日：2017-01-30

Applicant: LG ELECTRONICS INC.

Inventor： Hyunsoo Ko ,  Seokmin Shin ,  Bonghoe Kim ,  Yunjung Yi

IPC: H04W56/00 ,  H04L27/26 ,  H04W48/16 ,  H04W72/04 ,  H04J13/00 ,  H04L5/00

Abstract: This closure relates to narrowband communication supporting an Internet of Things (IoT) service in a next-generation wireless communication system and, more particularly, to a method and apparatus for transmitting and receiving narrowband synchronization signals. A base station repeats a Zadoff-Chu sequence on each of multiple OFDM symbols; multiplies each component of a cover sequence, having a length corresponding to a number of the multiple OFDM symbols, to all the components of the Zadoff-Chu sequence on each of the multiple OFDM symbols. Then, the base station transmits the NB PSS by using the Zadoff-Chu sequence multiplied by the cover sequence to the one or more UEs.

公开(公告)号：US10264565B2

公开(公告)日：2019-04-16

申请号：US15441125

申请日：2017-02-23

Applicant: LG ELECTRONICS INC.

Inventor： Seokmin Shin ,  Hyunsoo Ko ,  Yunjung Yi

IPC: H04L29/08 ,  H04W56/00 ,  H04W72/04

Abstract: A method for receiving downlink data in a wireless communication system supporting a Narrow Band (NB)-Internet of Things (IoT), the method performed by a terminal comprising: receiving a narrowband synchronization signal (NBSS) on a first NB-IoT carrier from a base station; acquiring, based on the NBSS, time synchronization and frequency synchronization with the base station; receiving the system information related to the NB-IoT on the first NB-IoT carrier from the base station; being assigned a second NB-IoT carrier from the base station; and receiving the downlink data on at least one of the first NB-IoT carrier or the second NB-IoT carrier from the base station.

公开(公告)号：US10237862B2

公开(公告)日：2019-03-19

申请号：US15442349

申请日：2017-02-24

Applicant: LG ELECTRONICS INC.

Inventor： Seokmin Shin ,  Hyunsoo Ko ,  Yunjung Yi

IPC: H04W56/00 ,  H04W72/04 ,  H04L29/08

Abstract: A method for receiving system information performed by a terminal in a wireless communication system that supports Narrow Band (NB)-Internet of Things (IoT) includes receiving a Narrowband Synchronization Signal from a base station through narrowband (NB); acquiring time synchronization and frequency synchronization with the base station based on the Narrowband Synchronization Signal; and receiving the system information related to the NB-IoT from the base station through a Narrowband Physical Broadcast Channel (N-PBCH).