公开(公告)号：US20190074941A1

公开(公告)日：2019-03-07

申请号：US16085479

申请日：2017-03-14

Applicant: LG ELECTRONICS INC.

Inventor： Seunggye HWANG ,  Kijun KIM ,  Bonghoe KIM ,  Hyukjin CHAE

IPC: H04L5/00 ,  H04J11/00 ,  H04W48/16

CPC classification number: H04L5/0012 ,  H04B1/7156 ,  H04J11/0073 ,  H04J11/0076 ,  H04L27/2613 ,  H04L27/2656 ,  H04L27/2666 ,  H04L27/2692 ,  H04W48/16

Abstract: The present invention discloses a method for estimating an index of a symbol in a wireless communication system and an apparatus therefor. Specifically, a method for estimating an index of a symbol by a terminal in a wireless communication system comprises the steps of: receiving, from a base station, one or more specific synchronization signals through one or more symbols; identifying the indices corresponding to the one or more symbols, based on a predefined pattern configured with multiple specific synchronization signals for a specific time unit and the received one or more specific synchronization signals; and receiving, from the base station, a specific signal, through a specific symbol determined using the identified indices.

公开(公告)号：US20190074886A1

公开(公告)日：2019-03-07

申请号：US16085161

申请日：2018-08-10

Applicant: LG Electronics Inc.

Inventor： Sukhyon YOON ,  Hyunsoo KO ,  Kijun KIM ,  Eunsun KIM

IPC: H04B7/06 ,  H04W48/10 ,  H04L5/00 ,  H04B17/318

Abstract: The present disclosure provides a method for receiving a channel state information-reference signal (CSI-RS) by a UE in a wireless communication system. Particularly, the method includes receiving information on a measurement bandwidth and cell list information for a plurality of cells, receiving CSI-RSs of the plurality of cells, and measuring reception power for the CSI-RSs within the measurement bandwidth, wherein sequences of the CSI-RSs are mapped to physical resources based on the same reference position configured by a higher layer.

公开(公告)号：US20190037540A1

公开(公告)日：2019-01-31

申请号：US16085522

申请日：2017-03-16

Applicant: LG ELECTRONICS INC.

Inventor： Inkwon SEO ,  Kijun KIM ,  Joonkui AHN ,  Yunjung YI

IPC: H04W72/04 ,  H04B7/06 ,  H04W72/12

Abstract: A method for receiving, by a terminal, control information in a wireless communication system, according to one embodiment of the present invention, comprises: receiving search space information for a self-contained subframe having all of a downlink control symbol, a data symbol, and an uplink control symbol; determining control channel candidates in the downlink control symbol of the self-contained subframe on the basis of the search space information; and searching for downlink control information of the terminal from the determined control channel candidates, wherein the determined control channel candidates constitute at least two or more search spaces on the downlink control symbol, and the terminal can search for the downlink control information assuming a transmission scheme specific to a search space to which each control channel candidate belongs.

公开(公告)号：US20190020386A1

公开(公告)日：2019-01-17

申请号：US16069413

申请日：2017-01-12

Applicant: LG ELECTRONICS INC.

Inventor： Haewook PARK ,  Jonghyun PARK ,  Kijun KIM

IPC: H04B7/0417 ,  H04B7/0456 ,  H04L5/00 ,  H04W76/27

Abstract: Disclosed are a method for transmitting and receiving channel state information in a multi-antenna wireless communication system, and an apparatus therefore. More specifically, a method for reporting, by a UE, channel state information (CSI) in a multi-antenna wireless communication system may include: receiving a channel state information reference signal (CSI-RS) on x multiple antenna ports from a base station; selecting y multiple antenna ports from among the x multiple antenna ports; and reporting, to the base station, a precoding matrix indicator (PMI) indicating a precoding matrix selected from a codebook for the y multiple antenna ports.

公开(公告)号：US20180376440A1

公开(公告)日：2018-12-27

申请号：US16065058

申请日：2017-11-08

Applicant: LG ELECTRONICS INC.

Inventor： Hyunsoo KO ,  Kijun KIM ,  Eunsun KIM

IPC: H04W56/00 ,  H04W72/04

Abstract: The present invention discloses a method for a base station to transmit a synchronization signal block in a wireless communication system. Particularly, the method includes the steps of mapping a plurality of synchronization blocks to a plurality of symbols within a specific time unit, and transmitting a plurality of the synchronization signal blocks mapped to a plurality of the symbols to a user equipment. In this case, at least one synchronization signal block is mapped to each of half time units having a half-length of the specific time unit.

公开(公告)号：US20180368084A1

公开(公告)日：2018-12-20

申请号：US15940186

申请日：2018-03-29

Applicant: LG ELECTRONICS INC.

Inventor： Hyunsoo KO ,  Kijun KIM ,  Sukhyon YOON ,  Eunsun KIM

IPC: H04W56/00 ,  H04L5/00

Abstract: A method and apparatus for communicating demodulation reference signals (DMRSs) for a PBCH (Physical Broadcast Channel) signal are disclosed. The method comprises mapping a primary synchronization signal (PSS) and a secondary synchronization signal (SSS) to resource elements on a first group of OFDM (Orthogonal Frequency Divisional Multiplex) symbols within a synchronization signal (SS) block. Here, the first group of OFDM symbols includes two OFDM symbols. The method also comprises mapping the PBCH signal to resource elements on a second group of OFDM symbols within the SS block. Here, the second group of OFDM symbols includes two or more OFDM symbols. Further, the method comprises mapping the DMRSs for the PBCH signal to the resource elements on the second group of OFDM symbols within the SS block.

公开(公告)号：US20180351719A1

公开(公告)日：2018-12-06

申请号：US16065122

申请日：2017-11-09

Applicant: LG ELECTRONICS INC.

Inventor： Kilbom LEE ,  Hyunsoo KO ,  Jiwon KANG ,  Kyuseok KIM ,  Kijun KIM

IPC: H04L5/00 ,  H04W24/08 ,  H04W72/08

Abstract: According to an embodiment of the present specification, provided is a method for transmitting a signal that allows a user equipment to cancel phase noise by a base station in an mmWave communication system. In this case, the method may include: generating a PTRS for estimating phase noise of a downlink signal; transmitting PTRS power boosting level information for the PTRS to the user equipment via downlink signaling; and transmitting the PTRS via downlink signaling based on the PTRS power boosting level information. In this case, the PTRS power boosting level information may be determined based on at least one of MCS level and PRB size.

公开(公告)号：US20180343576A1

公开(公告)日：2018-11-29

申请号：US16057061

申请日：2018-08-07

Applicant: LG ELECTRONICS INC.

Inventor： Hyangsun YOU ,  Yunjung YI ,  Kijun KIM ,  Jonghyun PARK

IPC: H04W24/08 ,  H04L5/00 ,  H04W48/16

Abstract: A method is provided for performing a measurement. The method may be performed by a user equipment (UE) and includes applying both of a measurement subframe pattern for a neighbor cell and a measurement timing configuration for a discovery signal, and selecting at least one or more subframes, to perform the measurement according to the appliance of the measurement subframe pattern and the measurement timing configuration.

公开(公告)号：US20180331859A1

公开(公告)日：2018-11-15

申请号：US15737971

申请日：2016-07-06

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae KIM ,  Kijun KIM

IPC: H04L25/02 ,  H04L25/03 ,  H04W72/04 ,  H04L5/00

CPC classification number: H04L25/0204 ,  H04B7/0452 ,  H04B7/0486 ,  H04L1/00 ,  H04L5/003 ,  H04L5/0048 ,  H04L5/0051 ,  H04L25/0224 ,  H04L25/03343 ,  H04L25/03898 ,  H04W72/042 ,  H04W76/27

Abstract: Disclosed is a method for estimating a channel by a first terminal in a wireless communication system. Particularly, the method comprises the steps of: obtaining information associated with whether a first pre-coder for the first terminal and a second pre-coder for a second terminal are identical to each other; estimating, as a single effective channel, a first effective channel between a base station and the first terminal and a second effective channel between the base station and the second terminal when the first pre-coder and the second pre-coder are identical to each other; individually estimating the first effective channel and the second effective channel when the first pre-coder and the second pre-coder are different from each other.

公开(公告)号：US20180294910A1

公开(公告)日：2018-10-11

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 ,  H04L27/26 ,  H04L5/00

CPC classification number: H04J11/0076 ,  H04J11/0063 ,  H04J13/0062 ,  H04J2011/0016 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0051 ,  H04L27/2613 ,  H04L27/266 ,  H04L27/2691 ,  H04L27/2692

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.