Methods and devices for determining a transmission rank
    1.
    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。

    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。

    Method and Apparatus for Channel Estimation and Detection in MIMO System
    3.
    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。

    Method and apparatus for channel estimation and detection in MIMO system
    4.
    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:US08537766B2

    公开(公告)日:2013-09-17

    申请号:US12987128

    申请日:2011-01-09

    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。

    Method and Transmitter Node for Transmitting DM-RS Pattern
    6.
    发明申请
    Method and Transmitter Node for Transmitting DM-RS Pattern 审中-公开
    用于发送DM-RS模式的方法和发射机节点

    公开(公告)号:US20120275414A1

    公开(公告)日:2012-11-01

    申请号:US13520803

    申请日:2010-06-24

    IPC分类号: H04W72/04

    摘要: Systems and methods for generating a demodulation reference signal for use by user equipment configured with multiple antennas based on a rank of an antenna or an antenna port are disclosed. A rank for a user equipment device is determined indicating the number of spatial layers or antenna ports in use, and the value of the rank is used to generate a cyclic shift offset and a cyclic shift, that can then be used to generate a demodulation reference signal to be used in timeslots within each spatial layer of an uplink transmission. Orthogonal cover codes may be used in conjunction with a determined cyclic shift to generate a demodulation reference signal.

    摘要翻译: 公开了一种用于生成基于天线或天线端口的等级配置有多个天线的用户设备使用的解调参考信号的系统和方法。 确定用户设备设备的等级,指示正在使用的空间层或天线端口的数量,并且使用该等级的值来产生循环移位偏移和循环移位,然后可以用于产生解调参考 信号用于上行链路传输的每个空间层内的时隙。 正交覆盖码可以与确定的循环移位结合使用,以产生解调参考信号。

    Methods and arrangements for transmitting and decoding reference signals
    10.
    发明授权
    Methods and arrangements for transmitting and decoding reference signals 有权
    参考信号传输和解码的方法和布置

    公开(公告)号:US08780832B2

    公开(公告)日:2014-07-15

    申请号:US13159563

    申请日:2011-06-14

    IPC分类号: H04W4/00 H04L5/00

    摘要: A method in a radio network node for transmitting a reference signal over an antenna port includes transmitting the reference signal over a first code division multiplexing (CDM) subgroup using an orthogonal cover code. The first CDM subgroup includes a first set of resource elements in a first time slot and a second set of resource elements in a subsequent time slot. The radio network node selects a permutation of the orthogonal cover code and transmits the reference signal over a second CDM subgroup using the permutation. The second CDM subgroup includes a third set of resource elements in the first time slot and a fourth set of resource elements in the subsequent time slot. The permutation is selected to enable decoding of the reference signal in the frequency domain, by applying the orthogonal cover code to the first set resource elements and to the third set of resource elements.

    摘要翻译: 用于通过天线端口发送参考信号的无线电网络节点中的方法包括使用正交覆盖码通过第一码分多路复用(CDM)子组发送参考信号。 第一CDM子组包括第一时隙中的第一组资源元素和后续时隙中的第二资源元素集合。 无线电网络节点选择正交覆盖码的排列,并使用排列在第二CDM子群上发送参考信号。 第二CDM子组包括第一时隙中的第三组资源元素和随后时隙中的第四组资源元素。 选择置换以通过将正交覆盖码应用于第一集合资源元素和第三组资源元素来解码频域中的参考信号。