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：US20200221410A1

公开(公告)日：2020-07-09

申请号：US16821343

申请日：2020-03-17

Applicant: LG Electronics Inc.

Inventor： Jaehyung KIM ,  Suckchel YANG ,  Seonwook KIM ,  Changhwan PARK ,  Joonkui AHN

IPC: H04W56/00 ,  H04W76/27 ,  H04W72/04 ,  H04W74/08 ,  H04L27/26

Abstract: Provided are a method of adjusting uplink timing in a wireless communication system and an apparatus therefor. Specifically, a method for a user equipment to adjust uplink timing in a wireless communication system includes transmitting, to a base station, an uplink signal, receiving, from the base station, a timing advance (TA) command configured based on the uplink signal, and performing uplink transmission to the base station by applying a timing advance (TA) indicated by the TA command. The TA command may be interpreted based on subcarrier spacing of at least one frequency resource region to which the TA is to be applied.

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：US20200178297A1

公开(公告)日：2020-06-04

申请号：US16071219

申请日：2017-03-08

Applicant: LG ELECTRONICS INC.

Inventor： Hanjun PARK ,  Seonwook KIM ,  Joonkui AHN

IPC: H04W74/08 ,  H04W72/04

Abstract: The present invention discloses a method, in a licensed assisted access (LAA) system, where a base station or user equipment (UE) performs a listen-before-talk (LBT)-based signal transmission, for transmitting and receiving an uplink signal between the UE and the base station, and an apparatus supporting the same. Specifically, the present invention discloses a method for a UE transmitting an uplink signal flexibly and efficiently based on LBT parameters indicated by the base station, and an apparatus supporting the same.

公开(公告)号：US20200169373A1

公开(公告)日：2020-05-28

申请号：US16779197

申请日：2020-01-31

Applicant: LG ELECTRONICS INC.

Inventor： Joonkui AHN ,  Suckchel YANG

IPC: H04L5/00 ,  H04W72/04 ,  H04L1/18 ,  H04L1/16

Abstract: A method for a wireless device to which a plurality of serving cells are assigned transmitting uplink control information (UCI) in a wireless communication system is provided. The wireless device transmits uplink data in a subframe to a physical uplink shared channel (PUSCH), and transmits UCI including a hybrid automatic repeat request (HARQ) ACK/NACK and periodic channel state information (CSI) in the subframe to a physical uplink shared channel (PUCCH). The PUCCH and the PUSCH have the same demodulation reference signal (DMRS) location within the subframe.

公开(公告)号：US20200162224A1

公开(公告)日：2020-05-21

申请号：US16773660

申请日：2020-01-27

Applicant: LG Electronics Inc.

Inventor： Joonkui AHN ,  Suckchel YANG

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

Abstract: A method for transmitting a positive-acknowledgement/negative-acknowledgement (ACK/NACK) in a wireless communication system, performed by a wireless device, includes receiving a plurality of downlink (DL) grants on a plurality of serving cells, each DL grant including a counter downlink assignment index (DAI) and an ACK/NACK resource indicator (ARI), the counter DAI indicating an accumulative number of PDSCHs received by the wireless device for a corresponding DL grant, receiving a plurality of physical downlink shared channels (PDSCHs) associated with the plurality of DL grants, selecting one of a plurality of sets of PUCCH resources based on a payload size of uplink control information (UCI), the UCI including ACK/NACK bits for the plurality of PDSCHs, determining a PUCCH resource within the selected set of PUCCH resources based on an ARI included in the most recently received DL grant among the plurality of DL grants and transmitting the UCI by using a PUCCH format associated with the determined PUCCH resource.

公开(公告)号：US20200100139A1

公开(公告)日：2020-03-26

申请号：US16065755

申请日：2018-03-23

Applicant: LG Electronics Inc.

Inventor： Seonwook KIM ,  Suckchel YANG ,  Joonkui AHN

IPC: H04W28/04 ,  H04W72/12 ,  H04L1/18 ,  H04L1/16

Abstract: A method for transmitting acknowledgement information by a user equipment (UE) in a wireless communication system, and an apparatus for supporting the same are disclosed. More particularly, a method for allowing a user equipment (UE) to transmit acknowledgement information for each code block group (CBG) with respect to data received within one or more slots is disclosed.

公开(公告)号：US20200068509A1

公开(公告)日：2020-02-27

申请号：US16672248

申请日：2019-11-01

Applicant: LG Electronics Inc.

Inventor： Joonkui AHN ,  Sukhyon YOON ,  Suhwan LIM ,  Suckchel YANG ,  Jonghyun PARK ,  Changhwan PARK ,  Seonwook KIM

IPC: H04W52/36 ,  H04W52/54 ,  H04W52/28 ,  H04W52/24 ,  H04W52/44 ,  H04W72/12 ,  H04W52/14

Abstract: Provided are a method for reporting a power headroom and an apparatus using the same. The apparatus computes and reports a power headroom for a physical uplink shared channel (PUSCH) that is transmitted in a first transmission period of a first band having a first subcarrier interval. The power headroom is computed on the basis of at least one second transmission interval of a second band having a second subcarrier interval which overlaps with the first transmission interval.

公开(公告)号：US20200067690A1

公开(公告)日：2020-02-27

申请号：US16489164

申请日：2018-02-28

Applicant: LG Electronics Inc.

Inventor： Changhwan PARK ,  Seonwook KIM ,  Joonkui AHN ,  Sukhyon YOON ,  Yunjung YI

IPC: H04L5/14 ,  H04W72/04 ,  H04W72/08 ,  H04L5/00

Abstract: A signal transmission/reception method comprising the steps of: receiving, from a base station, configuration information for configuring the operation of a terminal according to a first communication system; obtaining transmission power information on a downlink signal of the first communication system on the basis of the configuration information; and receiving the downlink signal from the base station on the basis of the transmission power information, wherein the downlink signal is transmitted via a downlink carrier of the first communication system, and the downlink carrier is allocated in an FDD mode in a guard-band between an in-band and the guard-band configured for a second communication system.

公开(公告)号：US20200045639A1

公开(公告)日：2020-02-06

申请号：US16593538

申请日：2019-10-04

Applicant: LG ELECTRONICS INC.

Inventor： Suckchel YANG ,  Joonkui AHN ,  Dongyoun SEO ,  Yunjung YI

IPC: H04W52/14 ,  H04W52/50 ,  H04L5/14 ,  H04L5/00 ,  H04W72/04 ,  H04L27/26 ,  H04L1/18 ,  H04W52/28 ,  H04W52/36 ,  H04W52/58

Abstract: The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and an apparatus for a terminal controlling uplink power in the wireless communication system, comprising the steps of: configuring an uplink subframe (UL SF) of a first set and a UL SF of a second set; receiving a downlink control information (DCI) format including a bitmap for indicating transmit power control (TPC) for a plurality of terminals; and controlling transmit power of an uplink channel by using TPC information on the terminals from the bitmap, wherein the TPC information is used for controlling transmit power of an uplink channel transmitted from the UL SF of the first set when the DCI format comprises a first identifier, and the TPC information is used for controlling transmit power of an uplink channel transmitted from the UL SF of the second set when the DCI format comprises a second identifier.