公开(公告)号：US20210243731A1

公开(公告)日：2021-08-05

申请号：US17050701

申请日：2019-04-26

Applicant: LG Electronics Inc.

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

IPC: H04W72/04 ,  H04W72/12

Abstract: The present disclosure provides a method for a terminal to receive a physical downlink shared channel (PDSCH) in a wireless communication system supporting a narrow band-internet of things (NB-IoT). Specifically, the terminal receives a first physical downlink control channel (PDCCH) including first downlink control information (DCI) from a base station and receives a first PDSCH on the basis of the first DCI. Here, the first PDSCH may include indication information indicating whether a multi transport block is scheduled. The terminal receives a plurality of PDSCHs from the base station, wherein at least one PDSCH of the plurality of PDSCHs may be received without receiving a separate DCI according to the indication information.

公开(公告)号：US20200245363A1

公开(公告)日：2020-07-30

申请号：US16637544

申请日：2018-08-09

Applicant: LG Electronics Inc.

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

IPC: H04W74/08 ,  H04B1/713

Abstract: The present invention relates to a method for performing a random access process in a wireless communication system, and a device therefor and, more specifically, to a method and a device therefor, the method comprising the steps of: receiving narrowband physical random access channel (NPRACH) configuration information; and transmitting a random access preamble on the basis of the received NPRACH configuration information, wherein a sub-carrier spacing for the random access preamble is set to 3.75/N kHz, where N is an integer greater than or equal to 3, the random access preamble includes multiple symbol groups, the multiple symbol groups are transmitted on the basis of frequency-hopping, and a frequency-hopping distance between each of the multiple symbol groups includes a value between 3.75/N kHz and 6*3.75 kHz.

公开(公告)号：US20200221507A1

公开(公告)日：2020-07-09

申请号：US16821367

申请日：2020-03-17

Applicant: LG Electronics Inc.

Inventor： Jaehyung KIM ,  Changhwan PARK ,  Seokmin SHIN ,  Joonkui AHN

IPC: H04W74/08

Abstract: Provided is a method for transmitting a random access preamble by a user equipment (UE) in a wireless communication system supporting a narrow band-Internet of things (NB-IoT). Specifically, the UE transmits the random access preamble to an eNB in a subcarrier allocated by the eNB according to a specific preamble structure and receives a random access response message from the eNB in response to the random access preamble. In this case, the random access preamble is repeatedly transmitted 16 times during a predetermined duration and then, a gap is inserted for a predetermined time and the predetermined duration is determined by multiplying a transmission duration in which the random access preamble is transmitted by the number of repeated transmission times.

公开(公告)号：US20200187170A1

公开(公告)日：2020-06-11

申请号：US16347519

申请日：2017-11-06

Applicant: LG Electronics Inc.

Inventor： Seokmin SHIN ,  Daesung HWANG ,  Joonkui AHN

IPC: H04W72/04 ,  H04W72/12 ,  H04W4/70 ,  H04W48/12 ,  H04J11/00 ,  H04L27/26 ,  H04W28/06

Abstract: Described are a method for transmitting and receiving data in a wireless communication system supporting Machine-Type Communication (MTC) and an apparatus therefor. The method includes: monitoring a first search space configured for an MTC Physical Downlink Control Channel (MPDCCH), in which the first MPDCCH includes first control information for scheduling of a first Physical Downlink shared Channel (PDSCH) for transferring a Single Cell-Multicast Control Channel (SC-MCCH); receiving the first PDSCH based on the first control information; monitoring a second search space configured for a second MPDCCH using a group identifier acquired through the SC-MCCH, in which the second MPDCCH includes second control information for scheduling of a second PDSCH for transferring a Single Cell-Multicast Traffic Channel (SC-MTCH); and receiving the second PDSCH based on the second control information, in which configuration information for a frequency bandwidth used for the second PDSCH may be transferred through the SC-MCCH.

公开(公告)号：US20200037367A1

公开(公告)日：2020-01-30

申请号：US16496734

申请日：2018-03-22

Applicant: LG Electronics Inc.

Inventor： Jaehyung KIM ,  Joonkui AHN ,  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 an apparatus therefor, the method comprising the steps of: receiving a physical downlink control channel (PDCCH) order, which indicates initiation of a random access procedure, from a base station; transmitting a random access preamble to the base station; and receiving a random access response message from the base station, wherein the step of receiving the random access response message comprises receiving downlink data together with the random access response message when the PDCCH order indicates downlink data transmission in Msg2.

公开(公告)号：US20200015262A1

公开(公告)日：2020-01-09

申请号：US16490526

申请日：2018-02-28

Applicant: LG Electronics Inc.

Inventor： Joonkui AHN ,  Sukhyon YOON ,  Changhwan PARK ,  Seokmin SHIN ,  Seunggye HWANG

IPC: H04W72/12 ,  H04J11/00 ,  H04W48/10 ,  H04W74/08 ,  H04W76/10

Abstract: Provided are a method for supporting a variable bandwidth and an apparatus using the same. In the apparatus, a wireless device receives a synchronization signal in a first bandwidth, and acquires a second bandwidth for a downlink (DL) channel on the basis of the synchronization signal. The apparatus receives the DL channel in the second bandwidth.

公开(公告)号：US20190268205A1

公开(公告)日：2019-08-29

申请号：US16308417

申请日：2017-06-07

Applicant: LG ELECTRONICS INC.

Inventor： Seokmin SHIN ,  Hanjun PARK ,  Hyunsoo KO ,  Kijun KIM ,  Byounghoon KIM ,  Eunsun KIM

IPC: H04L27/26

Abstract: The present invention discloses a method for obtaining information for a cyclic prefix (CP) in a wireless communication system by a terminal and a device for the same. Specifically, a method for obtaining information for a cyclic prefix (CP) in a wireless communication system by a terminal includes: detecting a specific synchronization signal received from a base station via a first symbol of a first subframe; detecting the specific synchronization signal received from the base station via a second symbol of a second subframe; and obtaining information for the CP applied to transmission of the specific synchronization signal based on an offset value between an index of the first symbol and an index of the second symbol.

公开(公告)号：US20190239057A1

公开(公告)日：2019-08-01

申请号：US16383103

申请日：2019-04-12

Applicant: LG Electronics Inc.

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

IPC: H04W4/80 ,  H04W72/04 ,  H04L5/14 ,  H04L5/00

Abstract: One disclosure of the present specification provides a method for receiving a downlink physical channel by a narrowband Internet of things (NB-IoT) device. The method may comprise the steps of: determining whether to receive a signal of a downlink physical channel from an NB-IoT cell, on a downlink pilot time slot (DwPTS) of a time division duplex (TDD) special subframe; and receiving the signal of the downlink physical channel on the TDD special subframe including the DwPTS, on the basis of the determination.

公开(公告)号：US20190215872A1

公开(公告)日：2019-07-11

申请号：US16257960

申请日：2019-01-25

Applicant: LG ELECTRONICS INC.

Inventor： Changhwan PARK ,  Seokmin SHIN ,  Joonkui AHN ,  Seunggye HWANG

IPC: H04W74/08

Abstract: This specification provides a method for performing early data transmission in a random access procedure in a wireless communication system.More specifically, the method performed by a user equipment (UE) includes: receiving, from a base station, a control message including first information indicating whether selection for a second transport size (TBS) smaller than a first TBS for message 3 is permitted and second information for the first TBS; transmitting, to the base station, a request for the EDT by using message 1; receiving, from the base station, message 2 including a UL grant for the message 3; determining a repetition number for the message 3 based on the control message and the UL grant; and transmitting the message 3 to the base station by the repetition number.Therefore, there is an effect that battery consumption of the UE can be reduced.

公开(公告)号：US20190141652A1

公开(公告)日：2019-05-09

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 ,  H04J13/00 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04W48/16

CPC classification number: H04W56/0015 ,  H04J13/0062 ,  H04L5/0007 ,  H04L5/0053 ,  H04L27/2601 ,  H04L27/2613 ,  H04W48/16 ,  H04W72/042

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.