公开(公告)号：US20090069054A1

公开(公告)日：2009-03-12

申请号：US11850781

申请日：2007-09-06

申请人： Kambiz C. Zangi ,  Leonid Krasny ,  Dennis Hui

发明人： Kambiz C. Zangi ,  Leonid Krasny ,  Dennis Hui

IPC分类号： H04M1/00

CPC分类号： H04L5/0082 ,  H04L1/0015 ,  H04L5/0023 ,  H04L5/0058 ,  H04L25/03343 ,  H04W4/08 ,  H04W28/18 ,  H04W72/00

摘要： According to one or more method and apparatus embodiments taught herein, network base stations reduce temporal variations in the interference perceived by mobile stations operating within the network by slowing down the rate at which they change or otherwise update the linear precoding settings applied to their transmitted Orthogonal Frequency Division Multiplex (OFDM) signals in comparison to the rate at which the base stations perform link adaptation. That is, the precoding-related component of measured interference (e.g., other-cell interference) at the mobile stations is made quasi-stationary with respect to channel quality reporting and link adaptation intervals by fixing the preceding settings used by each base station over time intervals substantially longer than the channel reporting/link adaptation intervals.

摘要翻译： 根据本文教导的一个或多个方法和装置实施例，网络基站通过减慢其改变的速率或以其他方式更新应用于其发送的正交的线性预编码设置的速率来减少在网络内操作的移动站感知到的干扰的时间变化 频分复用（OFDM）信号与基站执行链路自适应的速率相比较。 也就是说，通过固定每个基站随时间推移的先前设置，相对于信道质量报告和链路自适应间隔，将移动站处的测量干扰（例如，其他小区干扰）的预编码相关分量制成准静止 间隔显着长于信道报告/链路自适应间隔。

公开(公告)号：US08036099B2

公开(公告)日：2011-10-11

申请号：US11850781

申请日：2007-09-06

申请人： Kambiz C. Zangi ,  Leonid Krasny ,  Dennis Hui

发明人： Kambiz C. Zangi ,  Leonid Krasny ,  Dennis Hui

IPC分类号： H04L27/28 ,  H04B7/02 ,  H04Q7/00

CPC分类号： H04L5/0082 ,  H04L1/0015 ,  H04L5/0023 ,  H04L5/0058 ,  H04L25/03343 ,  H04W4/08 ,  H04W28/18 ,  H04W72/00

摘要： According to one or more method and apparatus embodiments taught herein, network base stations reduce temporal variations in the interference perceived by mobile stations operating within the network by slowing down the rate at which they change or otherwise update the linear precoding settings applied to their transmitted Orthogonal Frequency Division Multiplex (OFDM) signals in comparison to the rate at which the base stations perform link adaptation. That is, the precoding-related component of measured interference (e.g., other-cell interference) at the mobile stations is made quasi-stationary with respect to channel quality reporting and link adaptation intervals by fixing the preceding settings used by each base station over time intervals substantially longer than the channel reporting/link adaptation intervals.

摘要翻译： 根据本文教导的一个或多个方法和装置实施例，网络基站通过减慢其改变的速率或以其他方式更新应用于其发送的正交的线性预编码设置的速率来减少在网络内操作的移动站感知到的干扰的时间变化 频分复用（OFDM）信号与基站执行链路自适应的速率相比较。 也就是说，通过固定每个基站随时间推移的先前设置，相对于信道质量报告和链路自适应间隔，将移动站处的测量干扰（例如，其他小区干扰）的预编码相关分量制成准静止 间隔显着长于信道报告/链路自适应间隔。

公开(公告)号：US20120114060A1

公开(公告)日：2012-05-10

申请号：US11740417

申请日：2007-04-26

申请人： Kambiz C. Zangi ,  Leonid Krasny

发明人： Kambiz C. Zangi ,  Leonid Krasny

IPC分类号： H04B15/00 ,  H04L25/03

CPC分类号： H04B7/0417 ,  H04B7/043 ,  H04B7/0634 ,  H04B7/0691

摘要： In MIMO systems, two or more transmit signals are transmitted from different antenna clusters having one or more transmit antennas each. A precoding circuit weight the transmit signals transmitted from each transmit antenna using a common set of frequency independent antenna weights for all antenna clusters. The antenna weights are computed based on correlations between transmit antennas in the same antenna cluster.

摘要翻译： 在MIMO系统中，从具有一个或多个发射天线的不同天线簇发射两个或更多个发射信号。 预编码电路使用对于所有天线簇的共用的一组独立于频率的天线权重对从每个发射天线发射的发射信号进行加权。 基于相同天线簇中的发射天线之间的相关性来计算天线权重。

公开(公告)号：US07197282B2

公开(公告)日：2007-03-27

申请号：US10135095

申请日：2002-04-30

申请人： Paul W. Dent ,  Kambiz C. Zangi ,  Leonid Krasny

发明人： Paul W. Dent ,  Kambiz C. Zangi ,  Leonid Krasny

IPC分类号： H04B17/00

CPC分类号： H04L27/367 ,  H04B1/7105 ,  H04B7/005 ,  H04B7/022 ,  H04B7/0615 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0636 ,  H04L1/0003 ,  H04L1/16 ,  H04L25/0202 ,  H04L25/0204 ,  H04L25/0212 ,  H04L25/0226 ,  H04L25/0228 ,  H04L25/0244 ,  H04L25/03343

摘要： Processing of loop-back information returned by one or more mobile stations that are served by a wireless communication network permits the network to compensate its transmit signals for increased transmission efficiency and reduced signal interference at the mobile stations. Generally, the network forms one or more transmit signals as a combination of different signals intended for the different mobile stations, and remembers transmit information associated with these transmit signals. The mobile stations return loop-back signals to the network, which determines transmit signal compensation information by comparing loop-back information to memorized information. The mobile stations may loop-back samples from composite received signals, from processed received signal samples, or loop-back estimates. In the first case, processing at the network involves compensating the combined transmit signals at the transmit modulation rate, while the second case involves symbol rate processing of the individual information streams intended for the different mobile stations.

摘要翻译： 由无线通信网络服务的一个或多个移动站返回的环回信息的处理允许网络补偿其发射信号，以增加传输效率并降低移动站处的信号干扰。 通常，网络形成作为不同移动站的不同信号的组合的一个或多个发射信号，并且记住发送与这些发射信号相关联的信息。 移动站向网络返回环回信号，通过将回送信息与存储信息进行比较来确定发送信号补偿信息。 移动台可以从复合接收信号，经过处理的接收信号样本或环回估计中回送样本。 在第一种情况下，网络处理涉及以发射调制速率补偿组合的发射信号，而第二种情况涉及针对不同移动台的各个信息流的符号速率处理。

公开(公告)号：US08199840B2

公开(公告)日：2012-06-12

申请号：US11740417

申请日：2007-04-26

申请人： Kambiz C. Zangi ,  Leonid Krasny

发明人： Kambiz C. Zangi ,  Leonid Krasny

IPC分类号： H04B7/02

CPC分类号： H04B7/0417 ,  H04B7/043 ,  H04B7/0634 ,  H04B7/0691

摘要： In MIMO systems, two or more transmit signals are transmitted from different antenna clusters having one or more transmit antennas each. A precoding circuit weight the transmit signals transmitted from each transmit antenna using a common set of frequency independent antenna weights for all antenna clusters. The antenna weights are computed based on correlations between transmit antennas in the same antenna cluster.

摘要翻译： 在MIMO系统中，从具有一个或多个发射天线的不同天线簇发射两个或更多个发射信号。 预编码电路使用对于所有天线簇的共用的一组独立于频率的天线权重对从每个发射天线发射的发射信号进行加权。 基于相同天线簇中的发射天线之间的相关性来计算天线权重。

公开(公告)号：US20120058767A1

公开(公告)日：2012-03-08

申请号：US13292738

申请日：2011-11-09

申请人： Karl Molnar ,  Kambiz C. Zangi ,  Leonid Krasny ,  Stephen Grant ,  Jonas B. Karlsson

发明人： Karl Molnar ,  Kambiz C. Zangi ,  Leonid Krasny ,  Stephen Grant ,  Jonas B. Karlsson

IPC分类号： H04W74/04 ,  H04W36/00 ,  H04W72/04

CPC分类号： H04B7/0619 ,  H04B7/024 ,  H04B7/061 ,  H04B7/0639 ,  H04B7/0691 ,  H04B7/10 ,  H04W72/12 ,  H04W72/1278 ,  H04W88/02

摘要： A communication device is described herein that has control (or at least partial control) over which virtual antenna(s) in one or more base stations to use for transmissions. In one embodiment, the mobile phone performs the following steps: (1) receives an antenna subset list (from the scheduling unit) which identifies a configuration of virtual antennas that is associated with the base station(s); (2) uses the antenna subset list to select which virtual antenna(s) in the configuration of virtual antennas to use for transmissions; and (3) sends an antenna selection signal (to the scheduling unit) which contains information that instructs/requests the base station(s)/scheduling unit to use the selected virtual antenna(s) for transmissions.

摘要翻译： 本文描述的通信设备具有控制（或至少部分控制），一个或多个基站中的虚拟天线将用于传输。 在一个实施例中，移动电话执行以下步骤：（1）从识别与基站相关联的虚拟天线的配置接收来自调度单元的天线子集列表; （2）使用天线子集列表来选择用于传输的虚拟天线的配置中的哪些虚拟天线; 并且（3）发送包含指示/请求基站/调度单元使用所选择的虚拟天线进行传输的信息的天线选择信号（到调度单元）。

公开(公告)号：US08068872B2

公开(公告)日：2011-11-29

申请号：US11538535

申请日：2006-10-04

申请人： Karl Molnar ,  Kambiz C. Zangi ,  Leonid Krasny ,  Stephen Grant ,  Jonas B. Karlsson

发明人： Karl Molnar ,  Kambiz C. Zangi ,  Leonid Krasny ,  Stephen Grant ,  Jonas B. Karlsson

IPC分类号： H04M1/00 ,  H04B7/02 ,  H04B7/00 ,  H04B7/10

CPC分类号： H04B7/0619 ,  H04B7/024 ,  H04B7/061 ,  H04B7/0639 ,  H04B7/0691 ,  H04B7/10 ,  H04W72/12 ,  H04W72/1278 ,  H04W88/02

摘要： A mobile phone is described herein that has control (or at least partial control) over which virtual antenna(s) in one or more base stations should be used for transmissions. In one embodiment, the mobile phone performs the following steps: (1) receives an antenna subset list (from the scheduling unit) which identifies a configuration of virtual antennas that is associated with the base station(s); (2) uses the antenna subset list to select which virtual antenna(s) in the configuration of virtual antennas should be used for transmissions; and (3) sends an antenna selection signal (to the scheduling unit) which contains information that instructs/requests the base station(s)/scheduling unit to use the selected virtual antenna(s) for transmissions.

摘要翻译： 这里描述的移动电话具有控制（或至少部分控制），一个或多个基站中的哪个虚拟天线应该用于传输。 在一个实施例中，移动电话执行以下步骤：（1）从识别与基站相关联的虚拟天线的配置接收来自调度单元的天线子集列表; （2）使用天线子集列表来选择虚拟天线配置中哪些虚拟天线应用于传输; 并且（3）发送包含指示/请求基站/调度单元使用所选择的虚拟天线进行传输的信息的天线选择信号（到调度单元）。

公开(公告)号：US08442449B2

公开(公告)日：2013-05-14

申请号：US12941114

申请日：2010-11-08

申请人： Dennis Hui ,  Jung-Fu Cheng ,  Kambiz Zangi ,  Leonid Krasny

发明人： Dennis Hui ,  Jung-Fu Cheng ,  Kambiz Zangi ,  Leonid Krasny

IPC分类号： H04B1/00 ,  H04B7/00

CPC分类号： H04B7/0417 ,  H04B7/065 ,  H04B7/0658 ,  H04B7/066 ,  H04B7/0663

摘要： A receiver and a method are described herein for reducing an amount of channel state information related to a transmit channel correlation matrix ΦTX that is feedback to a transmitter. In addition, to a transmitter and a method are described herein for reconstructing the transmit channel correlation matrix φTX using the reduced channel state feedback information received from the receiver.

摘要翻译： 本文描述了一种接收机和方法，用于减少与向发射机反馈的发射信道相关矩阵PhiTX相关的信道状态信息量。 此外，本文描述了一种发射机和方法，用于使用从接收机接收的减少的信道状态反馈信息重建发射信道相关矩阵phiTX。

公开(公告)号：US20120100877A1

公开(公告)日：2012-04-26

申请号：US13335482

申请日：2011-12-22

申请人： Kambiz Zangi ,  Dennis Hui ,  Leonid Krasny

发明人： Kambiz Zangi ,  Dennis Hui ,  Leonid Krasny

IPC分类号： H04W24/02

CPC分类号： H04B7/024

摘要： A method for determining antenna weights for use in transmitting data from a plurality of base stations to a user device is disclosed. The antenna weights are determined using an input covariance matrix (S), and the input covariance matrix is determined subject to a predetermined power constraint and a predetermined, non-zero interference constraint.

摘要翻译： 公开了一种用于确定用于从多个基站向用户设备发送数据的天线权重的方法。 使用输入协方差矩阵（S）确定天线权重，并且在预定功率约束和预定的非零干扰约束条件下确定输入协方差矩阵。

公开(公告)号：US20090016425A1

公开(公告)日：2009-01-15

申请号：US11777671

申请日：2007-07-13

申请人： Dennis Hui ,  Leonid Krasny

发明人： Dennis Hui ,  Leonid Krasny

IPC分类号： H04B1/66

CPC分类号： H04L1/0026 ,  H04L1/0019 ,  H04L1/0029 ,  H04L1/003

摘要： A method of variable rate vector quantization reduces the amount of channel state feedback. Channel coefficients of a communication channel are determined and second order statistics (e.g., variances) of the channel taps are computed). Bit allocation for the channel taps are determined based on the coefficients statistics. The channel taps are individually quantized at rates determined based on said bit allocations.

摘要翻译： 可变速率矢量量化的方法减少了信道状态反馈的量。 确定通信信道的信道系数，并且计算信道抽头的二阶统计（例如，方差）。 基于系数统计确定信道抽头的位分配。 以基于所述位分配确定的速率单独地量化信道抽头。