公开(公告)号：US20210105832A1

公开(公告)日：2021-04-08

申请号：US17124150

申请日：2020-12-16

Applicant: LG ELECTRONICS INC.

Inventor： Seokmin SHIN ,  Changhwan PARK ,  Jaehyung KIM ,  Joonkui AHN ,  Suckchel YANG ,  Seunggye HWANG

IPC: H04W74/08 ,  H04W74/00 ,  H04W16/14

Abstract: This specification provides a method for transmitting an NPRACH preamble in a wireless communication system supporting TDD. More specifically, the method performed by the UE includes: receiving, from a base station, NPRACH configuration information including control information for a repetition number of NPRACH preambles including symbol groups through a higher layer signaling; and transmitting, to the base station, the NPRACH preamble repeatedly through frequency hopping of a symbol group based on the NPRACH configuration information, in which a frequency location of the symbol group is determined based on a first parameter related to a start subcarrier and a second parameter related to the frequency hopping.

公开(公告)号：US20200267675A1

公开(公告)日：2020-08-20

申请号：US16868130

申请日：2020-05-06

Applicant: LG ELECTRONICS INC.

Inventor： Hyunsoo KO ,  Seokmin SHIN ,  Bonghoe KIM ,  Yunjung YI

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

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：US20200221481A1

公开(公告)日：2020-07-09

申请号：US16638032

申请日：2018-08-10

Applicant: LG Electronics Inc.

Inventor： Changhwan PARK ,  Seonwook KIM ,  Seokmin SHIN ,  Joonkui AHN ,  Suckchel YANG ,  Seunggye HWANG

IPC: H04W72/12 ,  H04W72/04 ,  H04W4/80

Abstract: The present invention relates to a wireless communication system, and specifically, to a method and a device therefor, the method comprising the steps of: repeatedly receiving a PDCCH including scheduling information, wherein the scheduling information includes time delay information; and repeatedly transmitting a PUSCH indicated by the scheduling information, after a time point indicated by the time delay information from the time point when the repeated receiving of the PDCCH ends, wherein a time resource in a time region includes a fixed DL time unit having a transmission direction fixed to a DL, and a time resource includes a fixed uplink (UL) time unit having a transmission direction fixed to a UL, and a floating time unit having a variable transmission direction, and the time point indicated by the time delay information is calculated on the basis of the fixed UL time unit.

公开(公告)号：US20200068619A1

公开(公告)日：2020-02-27

申请号：US16610597

申请日：2018-05-04

Applicant: LG Electronics Inc.

Inventor： Jaehyung KIM ,  Joonkui AHN ,  Suckchel YANG ,  Changhwan PARK ,  Seokmin SHIN ,  Seunggye HWANG

IPC: H04W74/08 ,  H04W74/00

Abstract: The present invention relates to a method for performing a random access procedure in a wireless communication system and a device therefor, the method comprising a step for receiving NPRACH configuration information and a step for transmitting a random access preamble on the basis of the NPRACH configuration information, wherein the NPRACH configuration information includes information indicating whether only a first preamble format is supported, only a second preamble format is supported, or both the first preamble format and the second preamble format are supported. If both the first preamble format and the second preamble format are supported according to the NPRACH configuration information and a specific condition is met, the random access preamble is transmitted using the first preamble format, and, if both the first preamble format and the second preamble format are supported according to the NPRACH configuration information and the specific condition is not met, the random access preamble is transmitted using the second preamble format.

公开(公告)号：US20200045706A1

公开(公告)日：2020-02-06

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 ,  H04W4/80 ,  H04W4/70 ,  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：US20190223197A1

公开(公告)日：2019-07-18

申请号：US16324288

申请日：2017-08-09

Applicant: LG Electronics Inc.

Inventor： Seokmin SHIN ,  Hyangsun YOU ,  Joonkui AHN ,  Yunjung YI ,  Seunggye HWANG

IPC: H04W72/12 ,  H04W4/80 ,  H04W24/08 ,  H04W72/04 ,  H04W80/08 ,  H04W88/06 ,  H04W68/00 ,  H04W76/11 ,  H04W76/27 ,  H04L1/00

CPC classification number: H04W72/1252 ,  H04L1/0061 ,  H04W4/80 ,  H04W24/08 ,  H04W68/005 ,  H04W72/042 ,  H04W72/0446 ,  H04W72/0453 ,  H04W76/11 ,  H04W76/27 ,  H04W80/08 ,  H04W88/06

Abstract: The present invention discloses a method for transmitting/receiving data in a wireless communication system supporting NB-IoT and a device for the method. More specifically, the method comprises monitoring a first search space configured for a first NPDCCH, wherein the first NPDCCH includes first control information for scheduling a first NPDSCH carrying an SC-MCCH; receiving the first NPDSCH based on the first control information; monitoring a second search space configured for a second NPDCCH by using a group identifier acquired through the SC-MCCH, wherein the second NPDCCH includes second control information for scheduling a second NPDSCH carrying an SC-MTCH; and receiving the second NPDSCH based on the second control information, wherein the second NPDCCH and the second NPDSCH are transmitted on one carrier, and carrier configuration information representing the one carrier is carried through the SC-MCCH.

公开(公告)号：US20190110267A1

公开(公告)日：2019-04-11

申请号：US16198278

申请日：2018-11-21

Applicant: LG ELECTRONICS INC.

Inventor： Hyunsoo KO ,  Seokmin SHIN ,  Byounghoon KIM ,  Yunjung YI ,  Bonghoe KIM

IPC: H04W56/00 ,  H04L29/06 ,  H04L5/00 ,  H04L27/26 ,  H04L29/08 ,  H04B1/7093 ,  H04J13/00

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 transmits a narrowband secondary synchronization signal indicating a narrowband cell identity, a specific sequence generated by performing phase rotation with respect to a base sequence generated through a second Zadoff-Chu sequence having a predetermined length L in a frequency domain and multiplying the base sequence by a cover sequence in element units is used for the narrowband secondary synchronization signal, and a specific root index is selected from among M (M

公开(公告)号：US20180287844A1

公开(公告)日：2018-10-04

申请号：US15765458

申请日：2016-10-04

Applicant: LG ELECTRONICS INC.

Inventor： Bonghoe KIM ,  Kijun KIM ,  Hyunsoo KO ,  Byounghoon KIM ,  Yunjung YI ,  Seokmin SHIN

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

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 narrowband Internet of Things (NB-IoT). A method for transmitting a primary synchronization signal (PSS) by a base station in a wireless access system supporting narrowband Internet of Things (NB-IoT), according to an embodiment of the present invention, can comprise the steps of: repeatedly generating first sequences n times so as to generate primary synchronization signals; multiplying n first sequences by second sequences and thus generating n primary synchronization signals; and transmitting n primary synchronization signals by means of n OFDM symbols, respectively. 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：US20170251455A1

公开(公告)日：2017-08-31

申请号：US15441125

申请日：2017-02-23

Applicant: LG ELECTRONICS INC.

Inventor： Seokmin SHIN ,  Hyunsoo KO ,  Yunjung YI

IPC: H04W72/04 ,  H04W56/00

CPC classification number: H04W56/0015 ,  H04L5/00 ,  H04L5/001 ,  H04L5/0048 ,  H04L5/0091 ,  H04L5/0098 ,  H04L67/12 ,  H04W72/042

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：US20170187563A1

公开(公告)日：2017-06-29

申请号：US15390135

申请日：2016-12-23

Applicant: LG ELECTRONICS INC.

Inventor： Seokmin SHIN ,  Kunil YUM ,  Yunjung YI ,  Bonghoe KIM ,  Hyunsoo KO

IPC: H04L27/26 ,  H04W56/00

CPC classification number: H04L27/2675 ,  H04L5/005 ,  H04L5/0053 ,  H04L27/2602 ,  H04L27/2656 ,  H04W56/0015 ,  H04W84/042

Abstract: Disclosed is a method for transmitting/receiving a signal in a wireless communication system supporting narrow-band (NB)-LTE, which is performed a terminal, including: receiving a narrow band synchronization signal from a base station; acquiring time synchronization and frequency synchronization with the base station based on the narrow band synchronization signal and detecting an identifier of the base station; and receiving a narrow band broadcast channel from the base station based on the detected identifier of the base station.