公开(公告)号：US20180241454A1

公开(公告)日：2018-08-23

申请号：US15752106

申请日：2016-08-12

Applicant: Samsung Electronics Co., Ltd.

Inventor： Keon-Kook LEE ,  Young-Han NAM ,  Tae-Young KIM ,  Jee-Hwan NOH ,  Hyun-Il YOO ,  Su-Ryong JEONG

IPC: H04B7/06

CPC classification number: H04B7/0626 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/06 ,  H04B7/0617 ,  H04B7/063 ,  H04B7/0632 ,  H04L5/005

Abstract: The present disclosure relates to a 5G or pre-5G communication system for supporting a higher data transfer rate beyond a 4G communication system such as LTE. A method and an apparatus for transmitting and receiving channel state information are disclosed. The method comprises: a step of transmitting, to a terminal, a signaling message including first information indicating at least one precoding matrix which is applicable to a symbol vector to be transmitted; a step of transmitting, to the terminal, a channel status information-reference signal (CSI-RS) for the terminal; and a step of receiving channel state information including a channel quality indicator (CQI) which is calculated using the selected precoding matrix on the basis of second information from the terminal.

公开(公告)号：US20180278306A1

公开(公告)日：2018-09-27

申请号：US15989817

申请日：2018-05-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Keon-Kook LEE ,  Tae-Young KIM ,  Jee-Hwan NOH ,  Hyun-Il YOO ,  Su-Ryong JEONG

IPC: H04B7/04 ,  H04L5/00

CPC classification number: H04B7/0486 ,  H04B7/0469 ,  H04B7/0478 ,  H04L5/0023 ,  H04L5/0051

Abstract: The present disclosure relates 5G or pre-5G communication systems for supporting higher data transmission rate than those by LTE or other post-4G communication systems. According to the present disclosure, a method for operating a beamformed reference signal by a base station and terminal in a communication system, and the terminal, are provided. The method includes transmitting, to a terminal, control information indicating whether a first codebook is used for generating feedback information on a downlink reference signal. The first codebook is used if generating feedback information on the beamformed reference signal and is generated based on a number of antenna ports and a number of ranks.

公开(公告)号：US20200304184A1

公开(公告)日：2020-09-24

申请号：US16883532

申请日：2020-05-26

Applicant: Samsung Electronics Co., Ltd.

Inventor： Keon-Kook LEE ,  Tae-Young KIM ,  Jee-Hwan NOH ,  Hyun-Il YOO ,  Su-Ryong JEONG

IPC: H04B7/0456 ,  H04L5/00

Abstract: The present disclosure relates 5G or pre-5G communication systems for supporting higher data transmission rate than those by LTE or other post-4G communication systems. According to the present disclosure, a method for operating a beamformed reference signal by a base station and terminal in a communication system, and the terminal, are provided. The method includes transmitting, to a terminal, control information indicating whether a first codebook is used for generating feedback information on a downlink reference signal. The first codebook is used if generating feedback information on the beamformed reference signal and is generated based on a number of antenna ports and a number of ranks.

公开(公告)号：US20170111084A1

公开(公告)日：2017-04-20

申请号：US15298795

申请日：2016-10-20

Applicant: Samsung Electronics Co., Ltd.

Inventor： Keon-Kook LEE ,  Ji-Ho SONG ,  David J. LOVE ,  Tae-Young KIM ,  Ji-Yun SEOL

IPC: H04B1/713 ,  H04B7/26 ,  H04L5/14

CPC classification number: H04B7/2621 ,  H04L5/143 ,  H04L27/26 ,  H04L27/2634

Abstract: A pre-5th-generation (5G) or 5G communication system for supporting higher data rates beyond 4th-generation (4G) communication system, such as a long term evolution (LTE), is provided. A method for performing a beamforming operation in a communication system supporting a frequency division-multiple input multiple output (FD-MIMO) scheme is provided. The method includes detecting a rough beam of a first dominant beam, detecting at least two codeword candidates based on the rough beam of the first dominant beam, and selecting one of the at least two codeword candidates as a final codeword.

公开(公告)号：US20180242285A1

公开(公告)日：2018-08-23

申请号：US15752074

申请日：2016-08-08

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hyun-Il YOO ,  Keon-Kook LEE ,  Tae-Young KIM ,  Jee-Hwan NOH ,  Su-Ryong JEONG

IPC: H04W72/04 ,  H04B7/0456 ,  H04B7/06 ,  H04W24/10 ,  H04W76/27

Abstract: Disclosed is a 5G or pre-5G communication system to be provided so as to support a data transmission rate higher than that of a 4G communication system, such as LTE. Disclosed is a communication method of a base station using a channel state information reference signal (CSI-RS) in a mobile communication system, the method comprising the steps of: receiving a sounding reference signal (SRS) from a terminal; selecting a precoding matrix by using the received SRS; transmitting a CSI-RS by using the selected precoding matrix; receiving a CSI report from the terminal, and determining a transmission parameter on the basis of the CSI report; and transmitting data to the terminal by applying the determined transmission parameter thereto, wherein the CSI-RS is aperiodically transmitted.

公开(公告)号：US20150280884A1

公开(公告)日：2015-10-01

申请号：US14669812

申请日：2015-03-26

Applicant: Samsung Electronics Co., Ltd. ,  Purdue Research Foundation

Inventor： Jun-Il CHOI ,  David J. LOVE ,  Tae-Young KIM ,  Keon-Kook LEE

IPC: H04L5/00 ,  H04W72/04

CPC classification number: H04B7/0478 ,  H04L25/0224 ,  H04L25/0391 ,  H04L25/03974

Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). A channel information feedback in a wireless communication system and a method of a receiving node of a wireless communication system are provided. The method includes transmitting an indication representing an indexing rule for channel values and block-wise quantized channel information, and receiving beamformed signals mapped to an antenna based on the indexing rule.

Abstract translation: 本公开涉及要提供用于支持超过第四代（4G）通信系统（例如长期演进（LTE））的较高数据速率的前5代（5G）或5G通信系统。 提供无线通信系统中的信道信息反馈和无线通信系统的接收节点的方法。 该方法包括：发送表示信道值和块式量化信道信息的索引规则的指示，以及基于索引规则接收映射到天线的波束形成的信号。

公开(公告)号：US20200099427A1

公开(公告)日：2020-03-26

申请号：US16698369

申请日：2019-11-27

Applicant: Samsung Electronics Co., Ltd.

Inventor： Keon-Kook LEE ,  Tae-Young KIM ,  Jee-Hwan NOH ,  Hyun-Il YOO ,  Su-Ryong JEONG

IPC: H04B7/0456 ,  H04L5/00

Abstract: The present disclosure relates 5G or pre-5G communication systems for supporting higher data transmission rate than those by LTE or other post-4G communication systems. According to the present disclosure, a method for operating a beamformed reference signal by a base station and terminal in a communication system, and the terminal, are provided. The method includes transmitting, to a terminal, control information indicating whether a first codebook is used for generating feedback information on a downlink reference signal. The first codebook is used if generating feedback information on the beamformed reference signal and is generated based on a number of antenna ports and a number of ranks.

公开(公告)号：US20180294997A1

公开(公告)日：2018-10-11

申请号：US15570647

申请日：2016-04-29

Applicant: Samsung Electronics Co., Ltd. ,  SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION

Inventor： Keon-Kook LEE ,  Sun-Ho PARK ,  Byonghyo SHIM ,  Tae-Young KIM ,  Ji-Yun SEOL

IPC: H04L25/02 ,  H04W24/08 ,  H04B7/0452

CPC classification number: H04L25/024 ,  H04B7/0452 ,  H04L25/0204 ,  H04L25/0236 ,  H04L25/03891 ,  H04W24/08

Abstract: The present disclosure relates to a 5G or pre-5G communication system to be provided to support a higher data transmission rate beyond the 4G communication system, such as LTE. The present invention provides a method for estimating a downlink channel by a receiver in a wireless communication system, the method comprising: estimating the downlink channel on the basis of a reference signal to recover an information bit, and checking whether the information bit recovery has succeeded; and when the information bit recovery has not succeeded, selecting at least one of the received signals as a virtual reference signal on the basis of the accuracy of the data reconstructed at a related resource location and the correlation between the related resource location and a resource location related to the reference signal, and estimating the downlink channel on the basis of at least one virtual reference signal.

公开(公告)号：US20170047975A1

公开(公告)日：2017-02-16

申请号：US15235810

申请日：2016-08-12

Applicant: Samsung Electronics Co., Ltd.

Inventor： Keon-Kook LEE ,  Tae-Young KIM ,  Jee-Hwan NOH ,  Hyun-Il YOO ,  Su-Ryong JEONG

IPC: H04B7/04 ,  H04W72/04 ,  H04L5/00

CPC classification number: H04B7/0486 ,  H04B7/0469 ,  H04B7/0478 ,  H04L5/0023 ,  H04L5/0051

Abstract: The present disclosure relates 5G or pre-5G communication systems for supporting higher data transmission rate than those by LTE or other post-4G communication systems. According to the present disclosure, a method for operating a beamformed reference signal by a base station and terminal in a communication system, and the terminal, are provided. The method includes transmitting, to a terminal, control information indicating whether a first codebook is used for generating feedback information on a downlink reference signal. The first codebook is used if generating feedback information on the beamformed reference signal and is generated based on a number of antenna ports and a number of ranks.

Abstract translation: 本公开涉及用于支持比LTE或其他后4G通信系统的传输速率更高的数据传输速率的5G或5G前通信系统。 根据本公开，提供了一种用于通信系统和终端中的基站和终端操作波束形成的参考信号的方法。 该方法包括向终端发送指示第一码本是否用于生成关于下行链路参考信号的反馈信息的控制信息。 如果产生关于波束形成的参考信号的反馈信息，则使用第一码本，并且基于多个天线端口和多个等级生成。