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200 条记录 (耗时 0.038 秒)

    Device, system, and method of wireless communication of base stations
    81.
    发明授权
    Device, system, and method of wireless communication of base stations 有权
    基站无线通信的设备，系统和方法

    公开(公告)号：US07949005B2

    公开(公告)日：2011-05-24

    申请号：US11860986

    申请日：2007-09-25

    申请人： Qinghua Li ,  Xintian E. Lin

    发明人： Qinghua Li ,  Xintian E. Lin

    IPC分类号： H04J3/16

    CPC分类号： H04W72/12 ,  H04B7/0452

    摘要： Device, system and method of wireless communication of base stations. In some demonstrative embodiments a method may include, for example, transmitting a downlink transmission over a frequency band from a first base station during a first time period; and receiving at a second base station an uplink transmission over the frequency band during a second time period at least partially overlapping the first time period. Other embodiments are described and claimed.

    摘要翻译： 基站无线通信的设备，系统和方法。 在一些说明性实施例中，方法可以包括例如在第一时间段期间从第一基站在频带上发送下行链路传输; 以及在第二基站处，在与所述第一时间段至少部分重叠的第二时间段期间，在所述频带上接收上行链路传输。 描述和要求保护其他实施例。

    Open loop MIMO receiver and method using hard decision feedback
    82.
    发明授权
    Open loop MIMO receiver and method using hard decision feedback 有权
    开环MIMO接收机和使用硬判决反馈的方法

    公开(公告)号：US07907688B2

    公开(公告)日：2011-03-15

    申请号：US11141297

    申请日：2005-05-31

    申请人： Qinghua Li ,  Xintian E. Lin

    发明人： Qinghua Li ,  Xintian E. Lin

    IPC分类号： H04B7/10

    CPC分类号： H04L1/06 ,  H04L1/005 ,  H04L1/0068 ,  H04L1/0071

    摘要： A receiver for use in performing open loop MIMO performs parallel interference cancellation to reduce interference caused by other spatial streams. Residual interference within an interference-cancelled signal is mitigated using MMSE filtering. The receiver processes received signals in multiple iterations. On each successive iteration, an MMSE filter assumes a lower interference power level than a previous iteration.

    摘要翻译： 用于执行开环MIMO的接收机执行并行干扰消除以减少由其他空间流引起的干扰。 使用MMSE滤波减轻干扰消除信号内的残留干扰。 接收机以多次迭代处理接收到的信号。 在每次连续的迭代中，MMSE滤波器假设比先前的迭代更低的干扰功率水平。

    Channel feedback using channel state predictions based also on delays
    83.
    发明授权
    Channel feedback using channel state predictions based also on delays 有权
    使用信道状态预测的信道反馈也基于延迟

    公开(公告)号：US07894820B2

    公开(公告)日：2011-02-22

    申请号：US11617434

    申请日：2006-12-28

    申请人： Qinghua Li ,  Xintian E. Lin

    发明人： Qinghua Li ,  Xintian E. Lin

    IPC分类号： H04W72/00

    CPC分类号： H04B7/0452 ,  H04B7/0417 ,  H04B7/0626 ,  H04B7/0641 ,  H04B17/24 ,  H04B17/364 ,  H04B17/3913 ,  H04L1/0026

    摘要： Embodiments of methods and apparatus for providing channel feedback information based at least in part on predicted future channel states is disclosed and described. In various embodiments, future channel states may be predicted based at least in part on received channel sounding signals, and amounts of delay in time in transmission and receipt between a subscriber station and a base station. Other embodiments may be described and claimed.

    摘要翻译： 公开和描述了至少部分地基于预测的未来信道状态来提供信道反馈信息的方法和装置的实施例。 在各种实施例中，可以至少部分地基于接收的信道探测信号以及用户站和基站之间的传输和接收中的时间延迟量来预测将来信道状态。 可以描述和要求保护其他实施例。

    Transmit power control in a wireless system
    85.
    发明授权
    Transmit power control in a wireless system 有权
    在无线系统中发射功率控制

    公开(公告)号：US07809394B1

    公开(公告)日：2010-10-05

    申请号：US10742011

    申请日：2003-12-17

    申请人： Qinghua Li ,  Xintian E. Lin

    发明人： Qinghua Li ,  Xintian E. Lin

    IPC分类号： H04B7/00

    CPC分类号： H04B7/0408 ,  H04B7/0697 ,  H04W52/286 ,  H04W52/42

    摘要： Transmit power control techniques are provided for use within a wireless system. The transmit power control techniques may be used in, for example, a wireless network implementing spatial division multiple access (SDMA). In at least one embodiment, a unique transmit power control packet exchange is provided for use in delivering transmit power control information to individual client devices within a network.

    摘要翻译： 提供发射功率控制技术用于无线系统中。 发射功率控制技术可以用于例如实现空分多址（SDMA）的无线网络。 在至少一个实施例中，提供唯一的发射功率控制分组交换用于将发射功率控制信息传送到网络内的各个客户机设备。

    Providing CQI feedback to a transmitter station in a closed-loop MIMO system
    87.
    发明授权
    Providing CQI feedback to a transmitter station in a closed-loop MIMO system 失效
    在闭环MIMO系统中向发射机站提供CQI反馈

    公开(公告)号：US07751368B2

    公开(公告)日：2010-07-06

    申请号：US11617549

    申请日：2006-12-28

    申请人： Qinghua Li ,  Guangjie Li ,  Xintian E. Lin ,  Minnie Ho

    发明人： Qinghua Li ,  Guangjie Li ,  Xintian E. Lin ,  Minnie Ho

    IPC分类号： H04W4/00 ,  H04B1/00 ,  H04B1/38 ,  H03C1/62

    CPC分类号： H04L1/0026 ,  H04B7/0632 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0029

    摘要： Methods and apparatuses for reducing an amount of bandwidth required for feedback to a transmitter station in a closed-loop multiple-input multiple-output (MIMO) system are described herein. The methods may include initially measuring at a receiver station channel qualities associated with receiving signals from a transmitter station for a first and a second spatial channel, the transmitter and receiver stations employing a closed-loop MIMO system. The receiver station may then determine a first and a second channel quality indicator (CQI) based on the measured channel qualities and may then transmit to the transmitter station the first and the second CQI to directly and indirectly identify a first and a second modulation coding scheme (MCS) entry among a plurality of ordered MCS entries, respectively. The second MCS entry being one of a selected subset of lower ordered MCS entries relative to the first MCS entry. The transmitter station may selectively use the first and the second identified MCS to transmit signals to the receiver station over the first and the second spatial channel, respectively.

    摘要翻译： 这里描述了用于减少在闭环多输入多输出（MIMO）系统中向发射机站反馈所需的带宽量的方法和装置。 这些方法可以包括最初在接收机站处测量与从发射机站接收针对第一和第二空间信道的信号相关联的信道质量，所述发射机和接收机站采用闭环MIMO系统。 然后，接收站可以基于所测量的信道质量来确定第一和第二信道质量指示符（CQI），然后可以向发射机站发送第一和第二CQI以直接和间接地识别第一和第二调制编码方案 （MCS）条目分别在多个有序的MCS条目中。 第二MCS条目是相对于第一MCS条目的低阶MCS条目的选定子集之一。 发射机站可以选择性地使用第一和第二识别的MCS分别在第一和第二空间信道上向接收机站发送信号。

    Mitigation of interference from periodic noise
    88.
    发明授权
    Mitigation of interference from periodic noise 失效
    减轻周期性噪声的干扰

    公开(公告)号：US07672407B2

    公开(公告)日：2010-03-02

    申请号：US11476365

    申请日：2006-06-27

    申请人： Yongfang Guo ,  Xintian E. Lin ,  Qinghua Li

    发明人： Yongfang Guo ,  Xintian E. Lin ,  Qinghua Li

    IPC分类号： H03D1/04

    CPC分类号： H04L27/2657 ,  H04B15/04 ,  H04L25/0212 ,  H04L25/025 ,  H04L27/2662

    摘要： A method and apparatus for mitigation of interference from periodic noise. An embodiment of a method includes receiving wireless signal data, where the data includes a periodic noise that varies in frequency over time. The method further includes performing a time-spectrum characterization of the data, and correlating the time-spectrum characterization of the data to determine a period of the periodic noise. The noise is dynamically weighted based at least in part on frequency variation of the noise.

    摘要翻译： 一种缓解周期噪声干扰的方法和装置。 方法的实施例包括接收无线信号数据，其中数据包括频率随时间变化的周期性噪声。 该方法还包括执行数据的时间谱表征，以及将数据的时间谱表征相关联以确定周期性噪声的周期。 噪声至少部分地基于噪声的频率变化来动态加权。

    SDMA communications with non-immediate block acknowledgment
    90.
    发明授权
    SDMA communications with non-immediate block acknowledgment 有权
    SDMA通信与非即时块确认

    公开(公告)号：US07567612B2

    公开(公告)日：2009-07-28

    申请号：US11923631

    申请日：2007-10-24

    申请人： Adrian P. Stephens ,  Qinghua Li ,  Xintian E. Lin ,  Minnie Ho

    发明人： Adrian P. Stephens ,  Qinghua Li ,  Xintian E. Lin ,  Minnie Ho

    IPC分类号： H04B1/38 ,  H04L12/42

    CPC分类号： H04L1/16 ,  H04L1/1854 ,  H04L1/188

    摘要： In Spatial Division Multiple Access (SDMA) communications, mobile devices that are transmitting to a base substantially simultaneously during a predetermined communications phase may wait until after an end of the predetermined communications phase to receive acknowledgments to their transmissions, so that a mobile device making a relatively short transmission does not experience an acknowledgement timeout while another mobile device is still completing a relatively long transmission. In some embodiments, the mobile devices may transmit a non-immediate block acknowledgement request during the communications phase.

    摘要翻译： 在空分多址（SDMA）通信中，在预定通信阶段基本上同时发送到基站的移动设备可以等待直到预定通信阶段结束以接收对其传输的确认，从而使得移动设备 相对短的传输在另一移动设备仍然完成相对长的传输时不经历确认超时。 在一些实施例中，移动设备可以在通信阶段期间发送非即时块确认请求。