公开(公告)号：US20170099631A1

公开(公告)日：2017-04-06

申请号：US15383404

申请日：2016-12-19

Applicant: Samsung Electronics Co., Ltd.

Inventor： Youngbum KIM ,  Joonyoung CHO ,  Yongjun KWAK ,  Juho LEE ,  Hyojin LEE ,  Hyoungju JI ,  Younsun KIM ,  Sangmin RO ,  Seunghoon CHOI

IPC: H04W48/16 ,  H04W24/10

CPC classification number: H04W48/16 ,  H04W24/10 ,  Y02D70/00 ,  Y02D70/1244 ,  Y02D70/1246 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/146

Abstract: A discovery signal transmission/reception method and an apparatus for improving energy efficiency of the system are provided. The discovery signal transmission method of a base station in a mobile communication system according to the present disclosure includes acquiring a discovery signal configuration of a neighbor cell, transmitting the discovery signal configuration to a terminal, receiving a measurement report including a result of measurement on a discovery signal of the neighbor from the terminal, the measurement being performed based on the discovery signal configuration, and determining whether to make a handover decision for the terminal based on the measurement report. The discovery signal transmission/reception method of the present disclosure is advantageous in improving energy efficiency of a mobile communication system.

公开(公告)号：US20160065389A1

公开(公告)日：2016-03-03

申请号：US14936254

申请日：2015-11-09

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hyojin LEE ,  Younsun Kim ,  Juho Lee

IPC: H04L25/02 ,  H04W24/10

CPC classification number: H04L25/0204 ,  H04B7/024 ,  H04W24/10

Abstract: A channel estimation method and apparatus are provided for a terminal in a cellular mobile communication system including a plurality of base stations. The method includes maintaining a maximum number of CSI processes supported by the UE; receiving CSI process report information; determining a number of CSI to be updated based on the maximum number of CSI processes supported by the UE; generating at least one CSI report based on the determined number of CSI to be updated; and transmitting the at least one CIS report to an evolved Node B (eNB).

公开(公告)号：US20160050007A1

公开(公告)日：2016-02-18

申请号：US14782551

申请日：2014-04-07

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY

Inventor： Hyojin LEE ,  Chungyong LEE ,  IIkyu CHOI ,  Younsun KIM ,  Juho LEE ,  Hyoungju JI ,  Hoondong NOH ,  Sangwon PARK

IPC: H04B7/06 ,  H04L5/14 ,  H04L25/02 ,  H04B7/04 ,  H04B17/10

CPC classification number: H04B7/0639 ,  H04B7/04 ,  H04B7/0413 ,  H04B7/0456 ,  H04B7/0617 ,  H04B17/104 ,  H04L1/06 ,  H04L1/20 ,  H04L5/14 ,  H04L25/0202

Abstract: The present invention relates to a method and apparatus for supporting multi-users using a massive MIMO technology in an FDD environment. A communication method of a UE in a MIMO system according to an embodiment of the present invention may comprise: estimating a channel; calculating a first precoding matrix indication having a minimum correlation with the estimated channel; and transmitting the calculated first precoding matrix indication to a BS. According to an embodiment of the present invention, in a massive MIMO system, the UE feeds not a pre-coder close to a channel thereof but a pre-coder close to a null space of a channel back to the BS, so that an IUI can be reduced even in an

Abstract translation: 本发明涉及在FDD环境中使用大规模MIMO技术来支持多用户的方法和装置。 根据本发明的实施例的MIMO系统中的UE的通信方法可以包括：估计信道; 计算与估计信道具有最小相关性的第一预编码矩阵指示; 以及将所计算的第一预编码矩阵指示传送给BS。 根据本发明的实施例，在大规模MIMO系统中，UE不是馈送靠近其信道的预编码器，而是接近靠近BS的信道的零空间的预编码器，使得IUI 可以减少甚至在一个

公开(公告)号：US20160014757A1

公开(公告)日：2016-01-14

申请号：US14861450

申请日：2015-09-22

Applicant: Samsung Electronics Co., Ltd,

Inventor： Hyojin LEE ,  Younsun KIM ,  Kiil KIM ,  Youngbum KIM

IPC: H04W72/04 ,  H04B17/309 ,  H04L5/00

CPC classification number: H04W72/0406 ,  H04B7/024 ,  H04B17/24 ,  H04B17/309 ,  H04B17/336 ,  H04B17/382 ,  H04L5/0035 ,  H04L5/0048 ,  H04W28/04 ,  H04W48/20 ,  H04W72/082 ,  H04W72/085

Abstract: Methods and apparatuses are provided for transmitting channel information, by a User Equipment (UE). Information for at least one first type Channel Status Information Reference Signal (CSI-RS) and information for at least one second type CSI-RS from an eNB, are identified. A Physical Downlink Control Channel (PDCCH) including an indicator is received. The indicator triggers channel information report associated with a first type CSI-RS and a second type CSI-RS, among the at least one first type CSI-RS and the at least one second type CSI-RS. Channel information is generated based on the first type CSI-RS and the second type CSI-RS. The channel information is reported through a Physical Uplink Shared CHannel (PUSCH)

Abstract translation: 提供用于由用户设备（UE）发送信道信息的方法和装置。 识别用于至少一个第一类型信道状态信息参考信号（CSI-RS）的信息和来自eNB的至少一个第二类型CSI-RS的信息。 接收包括指示符的物理下行链路控制信道（PDCCH）。 所述指示符触发所述至少一个第一类型CSI-RS和所述至少一个第二类型CSI-RS中的与第一类型CSI-RS和第二类型CSI-RS相关联的信道信息报告。 基于第一类型CSI-RS和第二类型CSI-RS生成信道信息。 通过物理上行链路共享信道（PUSCH）报告信道信息，

公开(公告)号：US20150373736A1

公开(公告)日：2015-12-24

申请号：US14762159

申请日：2014-01-15

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  KOREA NATIONAL UNIVERSITY OF TRANSPORTATION INDUSTTRY ACADEMIC COOPERATION FOUNDATION

Inventor： Hyoungju JI ,  Cheol MUN ,  Younsun KIM ,  Juho LEE ,  Hyojin LEE ,  Joonyoung CHO

IPC: H04W72/12 ,  H04B7/04 ,  H04B7/06 ,  H04L5/00

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：US20150264670A1

公开(公告)日：2015-09-17

申请号：US14657337

申请日：2015-03-13

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hyojin LEE ,  Youngbum KIM ,  Hyoungju JI

IPC: H04W72/04 ,  H04W72/00 ,  H04L1/00 ,  H04L5/00 ,  H04J11/00

CPC classification number: H04L1/0038 ,  H04J11/005 ,  H04L1/0045 ,  H04L5/0007 ,  H04L5/005 ,  H04L5/0073

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.

Abstract translation: 提供了一种用于传送干扰相关控制信息的通信方法和装置，以便提高基于长期进化（LTE-A）系统的蜂窝移动通信系统中接收下行链路信号的用户终端的接收性能。 该方法包括：接收干扰的传输参数，其包括关于不发送干扰数据的资源的信息，使用不发送干扰数据的资源的信息执行盲检测，使用该传输参数进行纠错编码 干扰和盲检测结果，并对接收到的数据进行解码。

公开(公告)号：US20150230260A1

公开(公告)日：2015-08-13

申请号：US14690971

申请日：2015-04-20

Applicant: Samsung Electronics Co., Ltd.

Inventor： Younsun KIM ,  Youngbum KIM ,  Juho LEE ,  Hyojin LEE ,  Joonyoung CHO ,  Hyoungju JI ,  Seunghoon CHOI

IPC: H04W72/08 ,  H04B7/04 ,  H04W72/04

CPC classification number: H04B7/0486 ,  H04B7/022 ,  H04B7/04 ,  H04B7/0417 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/0645 ,  H04W24/10 ,  H04W72/042 ,  H04W72/082

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.

Abstract translation: 提供了一种在移动通信系统中测量用于有效下行链路传输的参考信号的装置和方法。 该系统包括多个基站，每个基站具有基于分布式天线系统（DAS）分布在其服务区域中的多个天线。 一种用于基站在移动通信系统中通知终端参考信号测量信息的方法，包括：确定终端是否处于秩指示/预编码矩阵指示符（RI / PMI）禁用模式，当终端处于 RI / PMI禁用模式，由小区特定参考信号（CRS）和信道状态信息参考信号（CSI-RS）之间的终端要测量的参考信号，通过选择通知终端参考信号测量信息 结果以及基于来自终端的参考信号测量信息生成的信道信息。

公开(公告)号：US20140301306A1

公开(公告)日：2014-10-09

申请号：US14245423

申请日：2014-04-04

Applicant: Samsung Electronics Co., Ltd.

Inventor： Younsun KIM ,  Jinyoung OH ,  Hyojin LEE ,  Yongjun KWAK ,  Hyoungju JI ,  Youngbum KIM

IPC: H04L27/02

CPC classification number: H04L5/0046 ,  H04L1/0016 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0055 ,  H04L5/0057 ,  H04L5/006 ,  H04L5/0073

Abstract: A method and an apparatus for transmitting and receiving signals modulated with 256 Quadrature Amplitude Modulation (256QAM) for use in a mobile communication system are provided. The method includes receiving a first signal from a terminal, determining a modulation application criterion for data communication with the terminal based on the first signal, receiving a second signal including an index from the terminal, and determining a modulation scheme to be applied to at least one of the signals communicating with the terminal based on the modulation application criterion and the received index.

Abstract translation: 提供一种用于发送和接收用于在移动通信系统中使用的256正交幅度调制（256QAM）调制的信号的方法和装置。 该方法包括从终端接收第一信号，基于第一信号确定用于与终端进行数据通信的调制应用准则，从终端接收包括索引的第二信号，以及至少应用至少应用调制方案 基于调制应用准则和接收到的索引，与终端通信的信号之一。

公开(公告)号：US20140185560A1

公开(公告)日：2014-07-03

申请号：US14198038

申请日：2014-03-05

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: H04W72/04

CPC classification number: H04W72/042 ,  H04B7/0456 ,  H04L1/00 ,  H04L1/02 ,  H04L5/0007 ,  H04L5/0053 ,  H04L27/00 ,  H04W72/0406

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.

Abstract translation: 提供了一种用于在无线通信系统中由基站发送控制信息的方法。 该方法包括确定要应用于资源的预编码器和解调参考信号（DMRS）端口，用于发送控制信息的资源以及对应于资源的DMRS端口，并用于发送DMRS， 资源和DMRS端口，并将控制信息和DMRS发送给用户设备。

公开(公告)号：US20130329664A1

公开(公告)日：2013-12-12

申请号：US13915044

申请日：2013-06-11

Applicant: Samsung Electronics Co., Ltd.

Inventor： Younsun KIM ,  Juho LEE ,  Hyojin LEE ,  Joonyoung CHO ,  Hyoungju JI

IPC: H04W24/10

CPC classification number: H04L5/0048 ,  H04B7/0413 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0478 ,  H04B7/0619 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0632 ,  H04L5/0023 ,  H04L5/0057 ,  H04W24/10

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.

Abstract translation: 提供一种用于发送/接收用于多天线系统中的信道状态信息的方法和装置。 在无线通信系统中具有多个天线的基站的信号通信方法包括基于多个天线的方向确定第一和第二方向的天线端口，向终端分配用于各个天线端口的信道测量资源，发送 根据信道测量资源向终端提供反馈配置，以及基于信道测量资源和反馈配置从终端接收反馈信息。 信号发送/接收方法和装置在使用多个天线的系统中有效地发送/接收信道状态信息是有利的。