Method and apparatus for channel estimation and detection in MIMO system
    2.
    发明授权
    Method and apparatus for channel estimation and detection in MIMO system 有权
    MIMO系统中信道估计和检测的方法和装置

    公开(公告)号:US08908789B2

    公开(公告)日:2014-12-09

    申请号:US13520880

    申请日:2010-01-12

    IPC分类号: H04L1/02 H04L5/00 H04L25/02

    摘要: The prevent invention provides a method for performing channel estimation and detection in a Multiple-Input-Multiple-Output (MIMO) system, including: generating a demodulation reference signal, DM-RS, pattern for an extended cyclic prefix (CP); and estimating and detecting channel performance based on the generated DM-RS signal pattern. The DM-RS pattern supports from rank 1 to rank 8 patterns for 8 layer transmission. A transmitter, a receiver and a system thereof are also provided. The solution of the present invention improves channel estimation accuracy, saves channel estimation implementation and implementation complexity at terminals.

    摘要翻译: 防止发明提供了一种在多输入多输出(MIMO)系统中执行信道估计和检测的方法,包括:产生用于扩展循环前缀(CP)的解调参考信号DM-RS,模式; 以及基于所生成的DM-RS信号模式来估计和检测信道性能。 DM-RS模式支持8层传输从1级到8级模式。 还提供发射机,接收机及其系统。 本发明的解决方案提高了信道估计精度,节省了终端的信道估计实现和实现复杂度。

    REFERENCE SIGNAL POWER MEASUREMENT AND REPORTING FOR IMPROVING PERFORMANCE IN A NETWORK WITH GEOGRAPHICALLY SEPARATED ANTENNA PORTS
    3.
    发明申请
    REFERENCE SIGNAL POWER MEASUREMENT AND REPORTING FOR IMPROVING PERFORMANCE IN A NETWORK WITH GEOGRAPHICALLY SEPARATED ANTENNA PORTS 有权
    参考信号功率测量和报告,用于提高网络中具有地理分离天线端口的性能

    公开(公告)号:US20140211656A1

    公开(公告)日:2014-07-31

    申请号:US14342933

    申请日:2012-09-05

    IPC分类号: H04W24/02 H04W24/10

    摘要: Devices and methods for improving performance in a network with geographically separated antenna ports based on determining arid reporting reference signal power from a communication device to a base station are provided. In one aspect, the difference between received reference signal power values is used in determining a reported reference signal power value, such as reference signal received power (RSRP) in a Multiple-Input Multiple-Output (MIMO) network including geographically separated antenna ports transmitting on cell-specific reference signal (CBS) ports 0 and 1. Devices and methods for measuring and reporting per-port reference signal power values are provided.

    摘要翻译: 提供了用于基于确定从通信设备到基站的参考信号功率的确定来提高具有地理上分离的天线端口的网络中的性能的设备和方法。 在一个方面,接收到的参考信号功率值之间的差异被用于确定报告的参考信号功率值,诸如多输入多输出(MIMO)网络中的参考信号接收功率(RSRP),包括地理上分开的天线端口发射 提供单元特定参考信号(CBS)端口0和1.用于测量和报告每端口参考信号功率值的设备和方法。

    Methods and devices for determining a transmission rank
    4.
    发明授权
    Methods and devices for determining a transmission rank 有权
    用于确定传输等级的方法和设备

    公开(公告)号:US08654816B2

    公开(公告)日:2014-02-18

    申请号:US13375927

    申请日:2011-10-18

    IPC分类号: H04B1/00

    摘要: The invention relates to a method 20 in a base station 2 for determining a transmission rank. The base station 2 controls two or more transmit antenna ports 3a, 3b for supporting a multi-antenna transmission mode and for transmission of data on a channel for communication with a user equipment 4. The method 20 comprises receiving 21 a rank indicator from a user equipment 4, the rank indicator indicating the number of spatial multiplexing layers recommended by the user equipment 4, and determining 22 the transmission rank based on a channel imbalance factor CIF, wherein the channel imbalance factor CIF quantifies a difference in receive power of the two or more transmit antenna ports 3a, 3b. The invention also relates to a base station, methods in user equipment, user equipment, computer programs, and computer program products.

    摘要翻译: 本发明涉及基站2中用于确定传输等级的方法20。 基站2控制用于支持多天线传输模式的两个或更多个发射天线端口3a,3b,以及用于在与用户设备4通信的信道上传输数据。方法20包括从用户接收21等级指示符 设备4,表示用户设备4推荐的空间复用层的数量的等级指示符,以及基于信道不平衡因子CIF确定22的传输等级,其中,信道不平衡因子CIF量化两者的接收功率的差异 更多的发射天线端口3a,3b。 本发明还涉及基站,用户设备中的方法,用户设备,计算机程序和计算机程序产品。

    METHODS AND DEVICES FOR DETERMINING A TRANSMISSION RANK
    5.
    发明申请
    METHODS AND DEVICES FOR DETERMINING A TRANSMISSION RANK 有权
    用于确定传输级别的方法和设备

    公开(公告)号:US20130094543A1

    公开(公告)日:2013-04-18

    申请号:US13375927

    申请日:2011-10-18

    IPC分类号: H04B1/38

    摘要: The invention relates to a method 20 in a base station 2 for determining a transmission rank. The base station 2 controls two or more transmit antenna ports 3a, 3b for supporting a multi-antenna transmission mode and for transmission of data on a channel for communication with a user equipment 4. The method 20 comprises receiving 21 a rank indicator from a user equipment 4, the rank indicator indicating the number of spatial multiplexing layers recommended by the user equipment 4, and determining 22 the transmission rank based on a channel imbalance factor CIF, wherein the channel imbalance factor CIF quantifies a difference in receive power of the two or more transmit antenna ports 3a, 3b. The invention also relates to a base station, methods in user equipment, user equipment, computer programs, and computer program products.

    摘要翻译: 本发明涉及基站2中用于确定传输等级的方法20。 基站2控制用于支持多天线传输模式的两个或更多个发射天线端口3a,3b,以及用于在与用户设备4通信的信道上传输数据。方法20包括从用户接收21等级指示符 设备4,表示用户设备4推荐的空间复用层的数量的等级指示符,以及基于信道不平衡因子CIF确定22的传输等级,其中,信道不平衡因子CIF量化两者的接收功率的差异 更多的发射天线端口3a,3b。 本发明还涉及基站,用户设备中的方法,用户设备,计算机程序和计算机程序产品。

    Method and Apparatus for Channel Estimation and Detection in MIMO System
    6.
    发明申请
    Method and Apparatus for Channel Estimation and Detection in MIMO System 有权
    MIMO系统中信道估计和检测的方法和装置

    公开(公告)号:US20130034178A1

    公开(公告)日:2013-02-07

    申请号:US13520880

    申请日:2010-01-12

    IPC分类号: H04B7/02 H04L27/04 H04L27/06

    摘要: The prevent invention provides a method for performing channel estimation and detection in a Multiple-Input-Multiple-Output (MIMO) system, including: generating a demodulation reference signal, DM-RS, pattern for an extended cyclic prefix (CP); and estimating and detecting channel performance based on the generated DM-RS signal pattern. The DM-RS pattern supports from rank 1 to rank 8 patterns for 8 layer transmission. A transmitter, a receiver and a system thereof are also provided. The solution of the present invention improves channel estimation accuracy, saves channel estimation implementation and implementation complexity at terminals.

    摘要翻译: 防止发明提供了一种在多输入多输出(MIMO)系统中执行信道估计和检测的方法,包括:产生用于扩展循环前缀(CP)的解调参考信号DM-RS,模式; 以及基于所生成的DM-RS信号模式来估计和检测信道性能。 DM-RS模式支持8层传输从1级到8级模式。 还提供发射机,接收机及其系统。 本发明的解决方案提高了信道估计精度,节省了终端的信道估计实现和实现复杂度。

    Methods and radio network nodes for measuring interference
    7.
    发明授权
    Methods and radio network nodes for measuring interference 有权
    用于测量干扰的方法和无线电网络节点

    公开(公告)号:US09584272B2

    公开(公告)日:2017-02-28

    申请号:US13817665

    申请日:2012-11-26

    摘要: A first radio network node (110) and a method therein for measuring interference as well as a second radio network node (120) and a method therein for enabling the first radio network node to measure interference are disclosed. The first radio network node (110) obtains (201) configuration information for indicating a designated subframe in which a reference signal for measurement of the interference is to be transmitted by the second radio network node (120). The second radio network node (120) obtains (202) configuration information for configuring a designed subframe for transmission of a reference signal. The first radio network node (110) receives (205), in the designated subframe indicated by the configuration information, the reference signal transmitted by the second radio network node (120). The first radio network node (110) determines (206) a value of the interference based on the reference signal.

    摘要翻译: 公开了一种用于测量干扰的第一无线电网络节点(110)及其中的方法以及第二无线电网络节点(120)及其中的方法,使第一无线电网络节点能够测量干扰。 第一无线网络节点(110)获取(201)用于指示由第二无线电网络节点(120)发送用于测量干扰的参考信号的指定子帧的配置信息。 第二无线电网络节点(120)获得用于配置用于发送参考信号的设计子帧的配置信息(202)。 第一无线电网络节点(110)在由配置信息指示的指定子帧中接收由第二无线电网络节点(120)发送的参考信号(205)。 第一无线电网络节点(110)基于参考信号确定(206)干扰的值。

    Node and method for transmission mode switching for downlink transmission in downlink channel
    8.
    发明授权
    Node and method for transmission mode switching for downlink transmission in downlink channel 有权
    用于下行链路信道中下行链路传输的传输模式切换的节点和方法

    公开(公告)号:US09232529B2

    公开(公告)日:2016-01-05

    申请号:US14128221

    申请日:2011-07-01

    摘要: The present invention discloses a node for transmission mode switching for downlink transmission in a downlink channel (100), comprising: a configuring unit (110) adapted to configure an initial transmission mode for the downlink transmission as a default transmission mode; a deriving unit (120) adapted to derive channel quality metric (CQM) of the downlink channel; a first determining unit (130) adapted to determine a first predefined threshold on the basis of link level simulation of a first transmission mode and a second transmission mode; and a first switching unit (140) adapted to switch the transmission mode from the initial transmission mode to the first transmission mode or the second transmission mode on the basis of the CQM and the first predefined threshold. The present invention provides a simple, direct and efficient approach for transmission mode switching for downlink transmission in a downlink channel on the basis of available feedback from UE (or other kinds of terminals if appropriate) and/or link adaptation decisions from eNB (or other kinds of base stations if appropriate), provides high peak rate while maintaining cell coverage, and provides a proprietary solution without any impact on protocol/standard or UE implementation.

    摘要翻译: 本发明公开了一种用于下行链路信道(100)中下行链路传输的传输模式切换的节点,包括:配置单元(110),用于将下行链路传输的初始传输模式配置为默认传输模式; 导出单元(120),适于导出所述下行链路信道的信道质量度量(CQM); 第一确定单元,适于基于第一传输模式和第二传输模式的链路级仿真来确定第一预定义阈值; 以及适于基于所述CQM和所述第一预定义阈值将所述传输模式从所述初始传输模式切换到所述第一传输模式或所述第二传输模式的第一切换单元。 本发明基于来自UE(或适当的其他类型的终端)的可用反馈和/或来自eNB(或其他的)的链路适配决定,提供了用于下行链路信道中的下行链路传输的传输模式切换的简单,直接和有效的方法 各种基站,如果适用),提供高峰值速率同时保持小区覆盖,并提供专有解决方案,而不会对协议/标准或UE实现任何影响。

    Methods in a Device-to-Device, D2D, Enabled User Equipment, a D2D Enabled User Equipment, Methods in a Base Station, a Base Station, Computer Programs and Computer Program Products
    9.
    发明申请
    Methods in a Device-to-Device, D2D, Enabled User Equipment, a D2D Enabled User Equipment, Methods in a Base Station, a Base Station, Computer Programs and Computer Program Products 有权
    设备到设备,D2D,启用用户设备,启用D2D的用户设备,基站中的方法,基站,计算机程序和计算机程序产品中的方法

    公开(公告)号:US20140315541A1

    公开(公告)日:2014-10-23

    申请号:US14356828

    申请日:2011-11-08

    IPC分类号: H04W76/04 H04W24/10

    摘要: The invention relates to a method (20) in a device-to-device, D2D, enabled user equipment (12) of a communication system (10). The D2D enabled user equipment (12) supports D2D-communication with another D2D-enabled user equipment (15). The communication system (10) comprises a base station (15) serving one or more cellular user equipment (14) unable to support D2D communication. The D2D enabled user equipment (2, 15) and the cellular user equipment (14) share the same communication resources. The method (20) comprises: receiving (21), from the base station (13), configuration parameters comprising information on a reference signal pattern for use by the D2D enabled user equipment (12), and transmitting (22), based on the configuration parameters, cellular reference signals, enabling the cellular user equipment (14) to measure and report, to the base station (13), channel information on a channel from the D2D enabled user equipment (12) to the cellular user equipment (14). The invention also relates to D2D user equipment, methods in a base station, base station, computer programs and computer program products.

    摘要翻译: 本发明涉及一种在通信系统(10)的设备到设备(D2D)使能的用户设备(12)中的方法(20)。 启用D2D的用户设备(12)支持与另一个启用D2D的用户设备进行D2D通信(15)。 通信系统(10)包括服务于不能支持D2D通信的一个或多个蜂窝用户设备(14)的基站(15)。 启用D2D的用户设备(2,15)和蜂窝用户设备(14)共享相同的通信资源。 方法(20)包括:从基站(13)接收(21)包括关于由启用D2D的用户设备(12)使用的参考信号模式的信息的配置参数,以及基于 配置参数,蜂窝基准信号,使蜂窝用户设备(14)能够测量并向基站(13)报告从启用D2D的用户设备(12)到蜂窝用户设备(14)的信道上的信道信息, 。 本发明还涉及D2D用户设备,基站,基站,计算机程序和计算机程序产品中的方法。

    BEAMFORMING WITH PHASE COMPENSATION
    10.
    发明申请
    BEAMFORMING WITH PHASE COMPENSATION 有权
    具有相位补偿的光束

    公开(公告)号:US20140286202A1

    公开(公告)日:2014-09-25

    申请号:US14130474

    申请日:2011-07-01

    IPC分类号: H04B7/01 H04L5/14 H04B7/26

    摘要: A method and a base station for phase compensation in beamforming in a multi-antenna Time Division Duplex (TDD) communication network. In a first transmission mode, the base station estimates a first phase shift between a first antenna port and a reference antenna port in uplink based on a measurement of a first Sounding Reference Signal (SRS). Then the base station estimates in the first transmission mode a second phase shift between the first antenna port and the reference antenna port in downlink based on a Channel State Information (CSI) feedback from a User Equipment (UE), and calculates a parameter indicative of a difference between the first phase shift and the second phase shift.

    摘要翻译: 一种用于多天线时分双工(TDD)通信网络中的波束成形中的相位补偿的方法和基站。 在第一传输模式中,基站基于第一探测参考信号(SRS)的测量来估计上行链路中的第一天线端口和参考天线端口之间的第一相移。 然后,基站基于来自用户设备(UE)的信道状态信息(CSI)反馈,在第一传输模式中估计第一天线端口和下行链路中的参考天线端口之间的第二相移,并且计算表示 第一相移和第二相移之间的差。