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：US20150282138A1

公开(公告)日：2015-10-01

申请号：US14674671

申请日：2015-03-31

Applicant: Samsung Electronics Co., Ltd.

Inventor： Seunghoon CHOI ,  Youngbum KIM ,  Hyoungju JI

IPC: H04W72/04 ,  H04L5/00

CPC classification number: H04L5/0092 ,  H04L1/1664 ,  H04L1/1835 ,  H04L1/1874 ,  H04L5/001 ,  H04L5/0055

Abstract: A method for a dual connectivity-enabled terminal which receives downlink data from at least one of a macro and a pico base station to transmit uplink control information corresponding to downlink data is provided. The method includes receiving the downlink data from a base station, determining whether the terminal is configured with a secondary cell group (SCG), determining, if the terminal is configured with the SCG, a size of a soft buffer per code block per cell based on a number of configured serving cells of the terminal, and storing the received downlink data in the soft buffer based on the size of the soft buffer per code block per cell, wherein the configured serving cells are included in a master cell group (MCG) and the SCG.

Abstract translation: 提供了一种双连接使能终端的方法，其从宏和微微基站中的至少一个接收下行链路数据以发送与下行链路数据相对应的上行链路控制信息。 该方法包括从基站接收下行链路数据，确定终端是否配置有二次小区组（SCG），确定终端是否配置有SCG，每个基于每个小区的每个码块的软缓冲区的大小 在终端的多个配置的服务小区上，并且基于每个小区的每个码块的软缓冲区的大小将接收的下行链路数据存储在软缓冲器中，其中所配置的服务小区包括在主小区组（MCG）中， 和SCG。

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：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：US20150043400A1

公开(公告)日：2015-02-12

申请号：US14520971

申请日：2014-10-22

Applicant: Samsung Electronics Co., Ltd.

Inventor： Seunghoon CHOI ,  Joonyoung CHO ,  Youngbum KIM ,  Hyoungju JI

IPC: H04W72/04 ,  H04L5/14 ,  H04L5/00

CPC classification number: H04W72/0413 ,  H04L1/1614 ,  H04L1/1635 ,  H04L1/18 ,  H04L1/1861 ,  H04L5/00 ,  H04L5/0055 ,  H04L5/14 ,  H04W72/00 ,  H04W72/0406 ,  H04W72/0446 ,  H04W76/28 ,  H04W88/02 ,  H04W88/08

Abstract: A method for transmitting a physical channel in a Time Division Duplex (TDD) communication system capable of carrier aggregation is provided for supporting aggregation of carriers having different TDD configurations. The communication method of a terminal in a TDD radio communication system accomplishing broadband through carrier aggregation of primary and secondary cells, of which aggregated carriers have different TDD Uplink-Downlink (UL-DL) configurations, includes receiving Physical Downlink Shared Channel (PDSCH) through the secondary cell, and transmitting acknowledgement information corresponding to the PDSCH to a base station, where acknowledgement information is transmitted on a Physical Uplink Control CHannel (PUCCH) of the primary cell.

Abstract translation: 提供了一种用于在能够进行载波聚合的时分双工（TDD）通信系统中发送物理信道的方法，用于支持具有不同TDD配置的载波的聚合。 通过聚合载波具有不同的TDD上行链路下行链路（UL-DL）配置的主小区的载波聚合来实现宽带的TDD无线电通信系统中的终端的通信方法包括：接收物理下行链路共享信道（PDSCH） 二次小区，并且向基站发送对应于PDSCH的确认信息，其中在主小区的物理上行链路控制信道（PUCCH）上发送确认信息。

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：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。

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。