公开(公告)号：US10299258B2

公开(公告)日：2019-05-21

申请号：US14625092

申请日：2015-02-18

Applicant: Samsung Electronics Co., Ltd.

Inventor： Younsun Kim ,  Cheng Shan ,  Juho Lee ,  Hyojin Lee ,  Kiil Kim ,  Joonyoung Cho ,  Hyoungju Ji ,  Sangmin Ro ,  Seunghoon Choi

IPC: H04W4/00 ,  H04W72/04 ,  H04L1/00 ,  H04B7/0456 ,  H04L5/00 ,  H04L1/02 ,  H04L27/00

Abstract: A method for transmitting control information by a base station in a wireless communication system is provided. The method includes determining a precoder to be applied to a resource and a Demodulation Reference Signal (DMRS) port, the resource being used to transmit the control information, and the DMRS port corresponding to the resource and being used to transmit a DMRS, precoding the resource and the DMRS port by using the determined precoder, and transmitting the control information and the DMRS to a user equipment.

公开(公告)号：US10256888B2

公开(公告)日：2019-04-09

申请号：US14032533

申请日：2013-09-20

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hyojin Lee ,  Younsun Kim ,  Yongjun Kwak ,  Juho Lee ,  Hyoungju Ji

IPC: H04B7/06 ,  H04L5/00 ,  H04B7/0417

Abstract: A method and system are provided for a terminal to measure channel quality and transmit channel state information to a base station in a wireless mobile communication system operating in a multi-carrier-based multiple access scheme such as Orthogonal Frequency Division Multiple Access (OFDMA). The feedback information transmission method of a terminal in a mobile communication system includes receiving configuration information corresponding to at least two reference signals from a base station, receiving, at the terminal, feedback configuration information for measuring the at least two reference signals and generating feedback information based on a measurement result, receiving, at the terminal, the at least two reference signals, and transmitting, by the terminal, the feedback information at timings indicated in the feedback configuration information.

公开(公告)号：US10153881B2

公开(公告)日：2018-12-11

申请号：US15675334

申请日：2017-08-11

Applicant: Samsung Electronics Co., Ltd.

Inventor： Younsun Kim ,  Juho Lee ,  Hyojin Lee ,  Joonyoung Cho ,  Hyoungju Ji

IPC: H04L5/00 ,  H04W24/10 ,  H04B7/0413 ,  H04B7/0456 ,  H04B7/06 ,  H04B7/0452

Abstract: A method and an apparatus for transmitting/receiving channel state information for use in multi-antenna system are provided. A signal communication method of a base station having a plurality of antennas in a wireless communication system includes determining antenna ports of first and second directions based on directions of the plurality of antennas, allocating channel measurement resources for the respective antenna ports to a terminal, transmitting a feedback configuration to the terminal according to the channel measurement resources, and receiving feedback information from the terminal based on the channel measurement resource and the feedback configuration. The signal transmission/reception method and apparatus are advantageous in transmitting/receiving channel state information efficiently in the system using a plurality of antennas.

公开(公告)号：US10142053B2

公开(公告)日：2018-11-27

申请号：US15640971

申请日：2017-07-03

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hyojin Lee ,  Youngbum Kim ,  Hyoungju Ji

IPC: H04Q7/00 ,  H04L1/00 ,  H04L5/00 ,  H04J11/00

Abstract: A communication method and an apparatus for transferring interference-related control information in order to enhance reception performance of a user terminal that receives downlink signals in a cellular mobile communication system based on a long term evolution-advanced (LTE-A) system are provided. The method includes receiving transmission parameters of interference, which include information on a resource by which interference data is not transmitted, performing blind detection using the information on a resource by which interference data is not transmitted, performing error correction encoding using the transmission parameters of the interference and the blind detection result, and decoding the received data.

公开(公告)号：US09924528B2

公开(公告)日：2018-03-20

申请号：US15234574

申请日：2016-08-11

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hyojin Lee ,  Juho Lee ,  Kiil Kim ,  Younsun Kim

IPC: G01R31/08 ,  H04W72/08 ,  H04L5/00 ,  H04L25/02 ,  H04B7/024 ,  H04B7/06 ,  H04W24/10 ,  H04W72/04

CPC classification number: H04W72/085 ,  H04B7/024 ,  H04B7/0626 ,  H04L5/0007 ,  H04L5/0035 ,  H04L5/0048 ,  H04L25/0204 ,  H04W24/10 ,  H04W72/042

Abstract: A method and an apparatus for transmitting and receiving a feedback signal in a cellular mobile communication system is provided. The method of transmitting feedback in a Cooperative Multi-Point (CoMP) system, includes receiving feedback set information including allocation information of a Channel Status Information Reference Signal (CSI-RS) transmitted for estimating a channel of a User Equipment (TIE), receiving IDentification (ID) information for identifying a CoMP set including CSI-RS allocation information from a cell operating in a CoMP mode, extracting the CoMP set using the ID information and a feedback set, detecting a first feedback mode and first feedback timing with a first CSI-RS not included in the CoMP set among CSI-RSs included in the feedback set, and generating and transmitting feedback with respect to the first CSI-RS according to the detected first feedback mode and the first feedback timing.

公开(公告)号：US09923612B2

公开(公告)日：2018-03-20

申请号：US14762159

申请日：2014-01-15

Applicant: Samsung Electronics Co., Ltd. ,  Korea National University of Transportation Industry Academic Cooperation Foundation

Inventor： Hyoungju Ji ,  Cheol Mun ,  Younsun Kim ,  Juho Lee ,  Hyojin Lee ,  Joonyoung Cho

IPC: H04B7/0413 ,  H04B7/26 ,  H04B7/06 ,  H04L5/00 ,  H04W72/12

CPC classification number: H04B7/0413 ,  H04B7/0697 ,  H04B7/2621 ,  H04L5/0023 ,  H04L5/0048 ,  H04W72/1273

Abstract: The present invention proposes a hybrid spatial multiplexing (SM) and a space division multiple access (SDMA) technique in a frequency division duplex (FDD) massive multiple-input multiple output (MIMO) system using a two-dimensional planar array antenna, which effectively transmits a channel state information reference signal (CSI-RS) for estimating a downlink two-dimensional space channel using only a limited amount of downlink radio resources, and optimally selects and performs the SM and SDMA techniques in a two-dimensional space channel. To this end, the present invention proposes a technique which defines space resource blocks (SRB) by grouping space elements (SE) having a high spatial correlation between downlink channels in the horizontal dimension and corresponding SEs thereof in the vertical dimension, and transmits CSI-RSs for estimating channels in vertical dimension SEs corresponding to one selected horizontal SE in each SRB every transmit time interval (TTI). The present invention proposes a technique wherein user equipment (UE) estimates the spatial correlation between channels of different horizontal dimension SEs belonging to the same SRB received in different TTIs and the spatial correlation between channels of horizontal dimension SEs belonging to different SRBs received in the same TTI, and feeds information for changing the size of SRB of the corresponding UE to an optimal size back to eNodeB. The present invention proposes a technique wherein the UE estimates downlink channels through CSI-RSs transmitted from each SRB, and each UE feeds an index of a preferred SRB, a rank of the corresponding SRB in the vertical dimension, and channel quality information (CQI) back to eNodeB. When each UE determines the rank, it is possible to transmit the ranks to the fullest extent in the vertical dimension and only a single rank from each SRB in the horizontal dimension.

公开(公告)号：US09648588B2

公开(公告)日：2017-05-09

申请号：US13857555

申请日：2013-04-05

Applicant: Samsung Electronics Co. Ltd.

Inventor： Younsun Kim ,  Aris Papasakellariou ,  Kiil Kim ,  Juho Lee ,  Hyojin Lee ,  Joonyoung Cho

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

CPC classification number: H04W72/042 ,  H04B7/0413 ,  H04L5/0023 ,  H04L5/0051 ,  H04L5/0094 ,  H04W72/02 ,  H04W72/04 ,  H04W84/042

Abstract: A channel transmission/reception method and an apparatus for transmitting/receiving channels between a base station and a mobile terminal efficiently in a mobile communication supporting massive Multiple Input Multiple Output (MIMO) transmission are provided. The method includes determining a resource to which a Demodulation Reference Signal (DMRS) addressed to a terminal is mapped within a resource block, the DMRS resource being positioned in at least one of a first resource set capable of being allocated for DMRS and a second resource set symmetric with the first resource set on a time axis, and transmitting the DMRS and DMRS allocation information to the terminal.

公开(公告)号：US09596016B2

公开(公告)日：2017-03-14

申请号：US14873829

申请日：2015-10-02

Applicant: Samsung Electronics Co., Ltd.

Inventor： Younsun Kim ,  Youngbum Kim ,  Juho Lee ,  Hyojin Lee ,  Joonyoung Cho ,  Hyoungju Ji ,  Seunghoon Choi

IPC: H04W24/00 ,  H04W80/04 ,  H04B7/04 ,  H04W24/10 ,  H04W72/04 ,  H04W72/08 ,  H04B7/02 ,  H04B7/06

Abstract: An apparatus and a method of measuring a reference signal for efficient downlink transmission in a mobile communication system are provided. The system includes plural base stations, each having a plurality of antennas distributed in the service area thereof based on a Distributed Antenna System (DAS). A method for a base station to notify a terminal of reference signal measurement information in a mobile communication system comprises determining whether the terminal is in a Rank Indicator/Precoding Matrix Indicator (RI/PMI) disabled mode, selecting, when the terminal is in the RI/PMI disabled mode, the reference signal to be measured by the terminal between a Cell-specific Reference Signal (CRS) and a Channel Status Information Reference Signal (CSI-RS), notifying the terminal of the reference signal measurement information with the selection result, and receiving channel information generated based on the reference signal measurement information from the terminal.

公开(公告)号：US09510225B2

公开(公告)日：2016-11-29

申请号：US14036644

申请日：2013-09-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Younsun Kim ,  Hyojin Lee ,  Youngbum Kim ,  Joonyoung Cho ,  Hyoungju Ji

IPC: H04W24/10 ,  H04B17/345 ,  H04W72/12 ,  H04L5/00 ,  H04B7/02

CPC classification number: H04W24/10 ,  H04B7/024 ,  H04B17/345 ,  H04L5/0048 ,  H04L5/0062 ,  H04L5/0073 ,  H04W72/1226

Abstract: An interference measurement method and apparatus for use in a Distributed Antenna System (DAS) is provided. The method for transmitting channel state information based on interference measurement of a terminal in a Distributed Antenna System (DAS) according to the present disclosure includes receiving configuration of Interference Measurement Resource (IMR) for measuring interferences caused by plural Transmission Points (TPs), receiving control information including scheduling information on Physical Downlink Shared Channel (PDSCH), determining whether IMR-based interference measurement and PDSCH reception occur at a same subframe, and transmitting the channel state information generated according to a result of the determination. The interference measurement method and apparatus of the present disclosure is capable of measuring interference for efficient communication in the distributed antenna system.

Abstract translation: 提供了一种用于分布式天线系统（DAS）的干扰测量方法和装置。 根据本公开的基于分布式天线系统（DAS）中的终端的干扰测量来发送信道状态信息的方法包括：接收用于测量由多个传输点（TP）引起的干扰的干扰测量资源（IMR）的配置，接收 控制信息，包括物理下行链路共享信道（PDSCH）的调度信息，确定是否在同一子帧发生基于IMR的干扰测量和PDSCH接收，以及发送根据确定结果生成的信道状态信息。 本公开的干扰测量方法和装置能够测量分布式天线系统中的有效通信的干扰。

公开(公告)号：US09484998B2

公开(公告)日：2016-11-01

申请号：US14679674

申请日：2015-04-06

Applicant: Samsung Electronics Co., Ltd.

Inventor： Youn Sun Kim ,  Young Bum Kim ,  Hyojin Lee ,  Joon Young Cho ,  Ju Ho Lee ,  Jin Kyu Han ,  Cheng Shan

IPC: H04B7/06 ,  H04L5/00 ,  H04W74/00 ,  H04W24/02

CPC classification number: H04B7/0608 ,  H04L5/0023 ,  H04L5/0032 ,  H04L5/0048 ,  H04L5/0057 ,  H04L5/006 ,  H04L5/0069 ,  H04L5/008 ,  H04L5/0091 ,  H04W24/02 ,  H04W74/002

Abstract: Methods and apparatuses are provided for communicating with a terminal of a base station in a mobile communication system. Configuration information on a plurality of antenna ports of reference signals (RSs) which comprise first type antenna ports and second type antenna ports, is transmitted. Status information for at least one antenna port of an RS among the plurality of antenna ports of the RSs, is received. At least one indicator indicating at least one selected antenna port of an RS is transmitted based on the status information. The terminal is communicated with using the at least one selected antenna port of the RS. The first type antenna ports are for a centralized antenna and the second type antenna ports are for a distributed antenna.

Abstract translation: 提供了用于与移动通信系统中的基站的终端进行通信的方法和装置。 发送包括第一类型天线端口和第二类型天线端口的参考信号（RS）的多个天线端口上的配置信息。 接收RS的多个天线端口中RS的至少一个天线端口的状态信息。 基于状态信息发送指示RS的至少一个选定天线端口的至少一个指示符。 使用RS的至少一个选定的天线端口来传送终端。 第一类天线端口用于集中式天线，第二类天线端口用于分布式天线。