公开(公告)号：US20180213539A1

公开(公告)日：2018-07-26

申请号：US15924996

申请日：2018-03-19

Applicant: Samsung Electronics Co., Ltd.

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

IPC: H04W72/08 ,  H04L5/00 ,  H04B7/06 ,  H04L25/02 ,  H04B7/024 ,  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 (UE), 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：US20180103462A1

公开(公告)日：2018-04-12

申请号：US15729233

申请日：2017-10-10

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jeongho YEO ,  Jinyoung OH ,  Sungjin PARK ,  Juho LEE

IPC: H04W72/04 ,  H04W56/00

Abstract: A communication method and system for converging a 5G communication system supports higher data rates beyond a 4G system with IoT technology. The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The present disclosure provides a method for transmission and reception between a base station and a terminal, which can transmit a HARQ-ACK feedback of downlink data or uplink data in various or multiple timings, in accordance with a TA value and a fallback mode.

公开(公告)号：US20170245251A1

公开(公告)日：2017-08-24

申请号：US15589371

申请日：2017-05-08

Applicant: Samsung Electronics Co., Ltd.

Inventor： Younsun KIM ,  Aris PAPASAKELLARIOU ,  Kiil KIM ,  Juho LEE ,  Hyojin LEE ,  Joonyoung CHO

IPC: H04W72/04 ,  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：US20170215179A1

公开(公告)日：2017-07-27

申请号：US15412711

申请日：2017-01-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Seunghoon CHOI ,  Jinyoung OH ,  Jeongho YEO ,  Youngbum KIM ,  Yongjun KWAK ,  Juho LEE

IPC: H04W72/04 ,  H04W16/14

CPC classification number: H04W72/0413 ,  H04L1/0026 ,  H04L1/1671 ,  H04L1/1861 ,  H04L1/1887 ,  H04L1/1896 ,  H04W16/14

Abstract: A communication method and a system for supporting a high data transmission rate are provided. The method and system fuses 5G communication systems with IoT technology to transmit data at a high rate after 4G systems. The communication method and system are applied to intelligent services, based on 5G communication technology and IoT related technology, for example, smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail business, security, safety-related services, etc. The method for transmitting control information by a user equipment (UE) includes generating uplink control information (UCI), identifying whether a physical uplink shared channel (PUSCH) is not configured to transmit on a primary cell (PCell), identifying whether the PUSCH is configured to transmit on at least one secondary cell (SCell) for licensed band, and transmitting, to a base station, the UCI according to the identification.

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：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：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：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：US20150163782A1

公开(公告)日：2015-06-11

申请号：US14625111

申请日：2015-02-18

Applicant: Samsung Electronics Co., Ltd.

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

IPC: H04W72/04 ,  H04L5/00

CPC classification number: H04W72/042 ,  H04L5/0048 ,  H04L5/0053 ,  H04W72/0406

Abstract: A control channel transmission/reception method and an apparatus for transmitting/receiving control channels using a resource allocation scheme applicable regardless of reference signal transmission or whether the reference signal is transmitted in distributed transmission mode or localized transmission mode are provided. The control channel transmission method includes mapping a Demodulation Reference Signal (DMRS) to Resource Elements (REs) of a Resource Block (RB) for transmitting a control channel, mapping the control channel to the REs numbered with numbers of predetermined number of Resource Element Groups (REGs) in a frequency-first ascending order cyclically, with the exception of the REs to which the DMRS is mapped, and transmitting the DMRS and the control channel.

公开(公告)号：US20140256369A1

公开(公告)日：2014-09-11

申请号：US14201203

申请日：2014-03-07

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hyoungju JI ,  Yongjun KWAK ,  Younsun KIM ,  Sangmin RO ,  Juho LEE

IPC: H04W76/02

CPC classification number: H04W76/021 ,  H04L1/00 ,  H04L1/0064 ,  H04L2001/0093 ,  H04W8/005 ,  H04W48/14 ,  H04W56/0025 ,  H04W72/00 ,  H04W76/11 ,  H04W76/14 ,  H04W92/18

Abstract: A method for allowing terminals to exchange discovery or synchronization signals to determine their presences among each other within a service area of a base station is provided. The method includes collecting multicast identifiers of another terminal for use in multicast communication, receiving a multicast control channel for Device-to-Device (D2D) multicast communication, performing Cyclic Redundancy Check (CRC) on the received multicast control channel using the collected multicast identifiers, and receiving, when the CRC is successful, the D2D multicast according to the multicast control channel. The D2D communication method and apparatus is advantageous in that the D2D terminal is capable of transmitting the discovery or synchronization signal to discover the neighbor terminals without disturbing downlink or uplink communication between the base station and the terminal, wherein the base station configures the resource for D2D communication so as to support D2D communication without an inter-device interference.

Abstract translation: 提供了一种允许终端在基站的服务区域内交换发现或同步信号以确定其彼此之间的存在的方法。 该方法包括收集用于组播通信的另一终端的组播标识符，接收用于设备到设备（D2D）组播通信的组播控制信道，使用所收集的多播标识符对所接收的组播控制信道执行循环冗余校验（CRC） 并且当CRC成功时，根据组播控制信道接收D2D多播。 D2D通信方法和装置的优点在于，D2D终端能够发送发现或同步信号以发现相邻终端，而不干扰基站和终端之间的下行链路或上行链路通信，其中基站配置用于D2D的资源 通信，以支持D2D通信，而不受设备间干扰。