公开(公告)号：US20190013855A1

公开(公告)日：2019-01-10

申请号：US16067499

申请日：2017-01-05

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae KIM

IPC: H04B7/06 ,  H04B7/0456 ,  H04B7/0452 ,  H04W76/27

CPC classification number: H04B7/0626 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0632 ,  H04B7/0639 ,  H04W76/27

Abstract: Disclosed in the present application is a method by which a terminal reports channel state information (CSI) to a base station in a wireless communication system. Specifically, the method comprises the steps of: calculating a first CSI as to compare the same with CSI which has been most recently reported; reporting the first CSI to a base station if the calculated first CSI is not the same as the CSI which has been most recently reported; and reporting a second CSI to the base station if the calculated first CSI is the same as the CSI which has been most recently reported, wherein the second CSI is CSI calculated on the basis of the assumption that interference affecting a terminal has been removed.

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：US20180294848A1

公开(公告)日：2018-10-11

申请号：US15762917

申请日：2016-09-26

Applicant: LG ELECTRONICS INC.

Inventor： Jonghyun PARK ,  Hyungtae KIM ,  Kijun KIM

IPC: H04B7/0417 ,  H04B7/0452 ,  H04W72/04

Abstract: Disclosed are a method for transmitting and receiving channel state information in a wireless communication system and a device therefor. Specifically, a method for transmitting channel state information (CSI) by a terminal in a wireless communication system may comprise the steps of: receiving, from a base station, setting information for a single CSI process including a first channel state information-reference signal (CSI-RS) configuration, which is associated with K CSI-RS resources of a beamformed CSI-RS type, K being greater than one, and a second CSI-RS configuration, which is associated with one CSI-RS resource of the beamformed CSI-RS type; reporting, to the base station, an indicator indicating a CSI-RS resource selected from among the K CSI-RS resources; and reporting, to the base station, a channel quality indicator (CQI)/precoding matrix indicator (PMI)/rank indicator (RI) derived on the basis of the one CSI-RS resource.

公开(公告)号：US20180242172A1

公开(公告)日：2018-08-23

申请号：US15961124

申请日：2018-04-24

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae KIM ,  Hanbyul SEO

IPC: H04W24/02 ,  H04L5/00 ,  H04B7/024 ,  H04B7/06 ,  H04L1/20

CPC classification number: H04W24/02 ,  H04B7/024 ,  H04B7/0626 ,  H04L1/20 ,  H04L5/0035 ,  H04L5/0048 ,  H04L5/0057

Abstract: A method of reporting channel state information (CSI) by a user equipment (UE) in a wireless communication system includes receiving, from a base station, radio resource control (RRC) information including multiple CSI-reference signal resource element (CSI-RS RE) configurations, obtaining CSI based on the multiple CSI-RS RE configurations, and transmitting the CSI to the base station, wherein the RRC information further includes a time resource configuration that is commonly applied to the multiple CSI-RS RE configurations, and wherein the CSI corresponds to aggregated CSI and the UE obtains the aggregated CSI by using the multiple CSI-RS RE configurations which are aggregated within a same time resource indicated by the time resource configuration.

公开(公告)号：US20180206223A1

公开(公告)日：2018-07-19

申请号：US15741583

申请日：2016-07-08

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae KIM ,  Kijun KIM ,  Jonghyun PARK ,  Daesung HWANG ,  Bonghoe KIM

IPC: H04W72/04

CPC classification number: H04W72/0413 ,  H04B7/0417 ,  H04W28/06 ,  H04W72/044 ,  H04W88/02

Abstract: Disclosed in the present application is a method for transmitting, by a terminal, uplink control information to a base station in a wireless communication system. In detail, the method includes the steps of: periodically transmitting, to a base station, first uplink control information including channel status information; and transmitting, to the base station, second unlink control information including response information to downlink data, wherein when the first uplink control information and the second uplink control information are transmitted at the same time, the channel status information is characterized in being included in the second uplink control information and the first uplink control information and the second uplink control information are characterized in being transmitted together with a first indicator for indicating whether the response information is included.

公开(公告)号：US20180034525A1

公开(公告)日：2018-02-01

申请号：US15548715

申请日：2016-02-03

Applicant: LG ELECTRONICS INC.

Inventor： Jonghyun PARK ,  Kijun KIM ,  Hyungtae KIM ,  Youngtae KIM ,  Kunil YUM

IPC: H04B7/06 ,  H04W72/04 ,  H04B17/24

CPC classification number: H04B7/0626 ,  H04B7/0456 ,  H04B7/0628 ,  H04B17/24 ,  H04L5/00 ,  H04L5/0053 ,  H04W24/10 ,  H04W72/0406 ,  H04W72/0413

Abstract: A method for feeding back channel state information (CSI) in a wireless communication system, carried out by a terminal, according to the present specification comprises the steps of: transmitting, to a base station, capability information of the terminal for CSI-related action; receiving configuration information for the CSI-related action from the base station; tracking partially activated CSI reference signal (RS); measuring fully activated CSI-RS; and reporting the results of the measurement to the base station.

公开(公告)号：US20170310449A1

公开(公告)日：2017-10-26

申请号：US15516793

申请日：2016-01-05

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae KIM ,  Bonghoe KIM ,  Jonghyun PARK ,  Kijun KIM

IPC: H04L5/00 ,  H04L5/14

CPC classification number: H04L5/0057 ,  H04B7/0417 ,  H04B7/063 ,  H04B7/0632 ,  H04L5/14

Abstract: Disclosed is a method by which a terminal reports channel quality information (CQI) to a base station in a multi-antenna-based wireless communication system. Particularly, the method comprises the steps of: receiving, through an upper layer, the reference signal configuration defined by P number of antenna ports; receiving, through M number of antenna ports, reference signals from the base station; grouping the P number of antenna ports into antenna port groups formed of the M number of antenna ports; calculating CQIs by using the reference signal corresponding to each of the antenna port groups on the basis of the assumption that predefined precoders are applied to the reference signals; and reporting, to the base station, N number of CQIs among the calculated CQIs.

公开(公告)号：US20170279502A1

公开(公告)日：2017-09-28

申请号：US15510844

申请日：2015-09-18

Applicant: LG ELECTRONICS INC.

Inventor： Youngtae KIM ,  Kijun KIM ,  Hyungtae KIM ,  Jonghyun PARK ,  Hyukjin CHAE

IPC: H04B7/0413 ,  H04W72/04 ,  H04L5/00 ,  H04B7/06 ,  H04L27/26

CPC classification number: H04B7/0413 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0691 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0051 ,  H04L5/0091 ,  H04L27/2613 ,  H04W72/046

Abstract: The present invention relates to a method and an apparatus for transmitting, by a base station, a reference signal in a wireless communication system supporting a multi-antenna consisting of a plurality of horizontal domain antennas and a plurality of vertical domain antennas. Specifically, the method comprises the steps of: configuring, as a cell-specific reference signal (CRS) port, M first antenna ports among a total of N antennas that the base station has (where N and M are positive integers, N>M); transmitting a CRS using the M first antenna ports and transmitting a demodulation reference signal (DM-RS) using 0 second antenna ports (where 0 is a positive integer, N>O), to a terminal; and receiving channel measurement information using the CRS and the DM-RS which is fed back from the terminal.

公开(公告)号：US20170034855A1

公开(公告)日：2017-02-02

申请号：US15293008

申请日：2016-10-13

Applicant: LG ELECTRONICS INC.

Inventor： Illsoo SOHN ,  Kijun KIM ,  Jonghyun PARK ,  Hyungtae KIM

IPC: H04W74/08 ,  H04W24/10 ,  H04L1/06 ,  H04L1/00 ,  H04B7/06

CPC classification number: H04W74/0875 ,  H04B7/024 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/0647 ,  H04L1/0026 ,  H04L1/0027 ,  H04L1/0693 ,  H04W24/10

Abstract: The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and apparatus for a terminal to report channel state information in a wireless communication system, the method comprising: a step of transmitting first channel state information according to a first channel state information (CSI) process for reporting the first channel state information periodically for every first period; a step of transmitting second channel state information according to a second CSI process for reporting the second channel state information periodically for every second period; and a step of dropping the transmission of either the first channel state information or the second channel state information on the basis of the CSI process index of each of the first and second CSI processes in the event the first channel state information transmission timing and the second channel state information transmission timing conflict.

Abstract translation: 无线通信系统技术领域本发明涉及一种无线通信系统。 更具体地说，本发明涉及终端在无线通信系统中报告信道状态信息的方法和装置，该方法包括：根据第一信道状态信息（CSI）处理发送第一信道状态信息的步骤， 每第一个周​​期定期报告第一个信道状态信息; 根据用于每隔一个周期定期报告第二信道状态信息的第二CSI处理来发送第二信道状态信息的步骤; 以及在第一信道状态信息发送定时和第二信道状态信息发送定时的情况下，基于第一和第二CSI处理中的每一个的CSI处理索引来丢弃第一信道状态信息或第二信道状态信息的传输的步骤 信道状态信息传输定时冲突。

公开(公告)号：US20170034731A1

公开(公告)日：2017-02-02

申请号：US15304379

申请日：2015-04-30

Applicant: LG ELECTRONICS INC.

Inventor： Hyunho LEE ,  Hyungtae KIM ,  Kijun KIM ,  Hanjun PARK

IPC: H04W24/10 ,  H04W72/04 ,  H04B17/345 ,  H04L5/00

CPC classification number: H04W24/10 ,  H04B17/345 ,  H04L5/00 ,  H04L5/0048 ,  H04W52/243 ,  H04W52/367 ,  H04W52/40 ,  H04W72/044

Abstract: A method for reporting a channel state in a wireless communication system is performed by a terminal and comprises the steps of: receiving a configuration with respect to a zero-power transfer resource for a channel state measurement, wherein the zero-power transmission resource corresponds to a portion of a cell-specific reference signal (CRS) resource element (RE) of a serving base station or a CRS RE of a main interference base station; determining whether the zero-power transfer resource is set in a subframe to which a reference resource for the channel state measurement belongs; if the zero-power transfer resource is set in the subframe to which the reference resource belongs, calculating a value of a first-type or second-type channel state in the zero-power transfer resource; and reporting the calculated value of the first-type or second-type channel state to the serving base station, wherein the value of the first-type or second-type channel state can be a value from which the influence of an interference signal from the main interference base station has been removed.

Abstract translation: 一种用于在无线通信系统中报告信道状态的方法由终端执行，包括以下步骤：接收关于信道状态测量的零功率传输资源的配置，其中所述零功率传输资源对应于 主干扰基站的服务基站或CRS RE的小区特定参考信号（CRS）资源元素（RE）的一部分; 确定在所述信道状态测量的参考资源所属的子帧中是否设置所述零功率传输资源; 如果在参考资源所属的子帧中设置零功率传输资源，则计算零功率传输资源中的第一类型或第二类型信道状态的值; 并向所述服务基站报告所述第一类型或第二类型信道状态的计算值，其中所述第一类型或第二类型信道状态的值可以是来自所述第一类型或第二类型信道状态的干扰信号的影响的值 主干扰基站已被删除。