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    SDMA COMMUNICATIONS WITH NON-IMMEDIATE BLOCK ACKNOWLEDGMENT
    123.
    发明申请
    SDMA COMMUNICATIONS WITH NON-IMMEDIATE BLOCK ACKNOWLEDGMENT 有权
    SDMA通信与非立即块确认

    公开(公告)号：US20080181162A1

    公开(公告)日：2008-07-31

    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： H04J3/16 ,  H04J15/00

    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。

    Calibration in MIMO systems
    124.
    发明授权
    Calibration in MIMO systems 有权
    MIMO系统中的校准

    公开(公告)号：US07366245B2

    公开(公告)日：2008-04-29

    申请号：US10939162

    申请日：2004-09-10

    申请人： Qinghua Li ,  Xintian E. Lin

    发明人： Qinghua Li ,  Xintian E. Lin

    IPC分类号： H04L27/28

    CPC分类号： H04L25/03343

    摘要： Aggregate channel reciprocity in a wireless system is supported by calibrating transmitter/receiver pairs.

    摘要翻译： 通过校准发射机/接收机对来支持无线系统中的总体信道互易。

    Techniques to generate a precoding matrix for a wireless system
    127.
    发明授权
    Techniques to generate a precoding matrix for a wireless system 有权
    为无线系统生成预编码矩阵的技术

    公开(公告)号：US08682656B2

    公开(公告)日：2014-03-25

    申请号：US12583994

    申请日：2009-08-28

    申请人： Xintian E. Lin ,  Qinghua Li

    发明人： Xintian E. Lin ,  Qinghua Li

    IPC分类号： G10L19/12

    CPC分类号： H04B7/0456 ,  H04B7/0478 ,  H04B7/0617 ,  H04B7/0639 ,  H04B7/0663

    摘要： A codebook generation system and associated methods are generally described herein. A method of generating a precoding matrix during closed-loop spatial multiplexing of wireless data may comprise selecting a vector from among vectors stored in a memory based on a received index, applying a Householder transformation to the selected vector to produce an output matrix, forming the precoding matrix from one or more columns of the output matrix, and precoding data for transmission over a wireless channel using the precoding matrix. Other embodiments are described and claimed.

    摘要翻译： 本文一般地描述码本生成系统和相关联的方法。 在无线数据的闭环空间复用期间生成预编码矩阵的方法可以包括基于接收到的索引从存储在存储器中的向量中选择一个向量，对所选择的向量应用Householder变换以产生输出矩阵，形成 预编码矩阵，以及用于使用预编码矩阵在无线信道上进行传输的预编码数据。 描述和要求保护其他实施例。

    MAC slot alignment among multiple wireless stations
    128.
    发明授权
    MAC slot alignment among multiple wireless stations 有权
    多个无线站之间的MAC时隙对齐

    公开(公告)号：US08665736B2

    公开(公告)日：2014-03-04

    申请号：US12394583

    申请日：2009-02-27

    申请人： Qinghua Li ,  Xintian E. Lin ,  Qiang Li ,  Jing Zhu ,  Xingang Guo ,  Alexey Khoryaev

    发明人： Qinghua Li ,  Xintian E. Lin ,  Qiang Li ,  Jing Zhu ,  Xingang Guo ,  Alexey Khoryaev

    IPC分类号： G01R31/08

    CPC分类号： H04L27/2656 ,  H04L27/2678 ,  H04W56/0005

    摘要： A device in a wireless network receives signals and determines media access control (MAC) slot boundaries of the received signals. The MAC slot boundaries are averaged in time, and a local slot boundary is modified in response thereto. The local MAC slot boundary is modified by less than ten percent of a short interframe space until the local MAC slot boundary is within one orthogonal frequency division multiplexing (OFDM) cyclic prefix duration of the averaged MAC slot boundaries.

    摘要翻译： 无线网络中的设备接收信号并确定接收信号的媒体接入控制（MAC）时隙边界。 MAC时隙边界在时间上被平均，并且响应于此而修改本地时隙边界。 本地MAC时隙边界被修改为小于帧间间隔空间的百分之十，直到本地MAC时隙边界在平均MAC时隙边界的正交频分复用（OFDM）循环前缀持续时间内。

    Providing CQI feedback with common code rate to a transmitter station
    129.
    发明授权
    Providing CQI feedback with common code rate to a transmitter station 有权
    向发射台提供具有共同码率的CQI反馈

    公开(公告)号：US08488709B2

    公开(公告)日：2013-07-16

    申请号：US12871361

    申请日：2010-08-30

    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： H04B7/02 ,  H04B1/00

    CPC分类号： H04B7/0632 ,  H04B7/0641 ,  H04B7/0643 ,  H04L1/0025 ,  H04L1/0029

    摘要： Methods and apparatuses for providing CQI feedback with common code rate to a transmitter station are described herein. In one implementation, the methods may include a receiver station that is communicatively linked to a transmitter station via k spatial channels transmitting a first CQI to the transmitter station that indicates a modulation level for use by the transmitter station to transmit (i.e., to configure for transmission) a first of k streams of signals to be transmitted to the receiver station. The first CQI may further include a common code rate to be used by the transmitter station for transmitting the first of the k streams of signals as well as for transmitting the rest of the k−1 additional streams of signals to the receiver station. The receiver station may further transmit to the transmitter station k−1 additional CQIs to indicate to the transmitter station the k−1 modulation levels to be used by the transmitter station for transmitting the k−1 additional streams of signals to the receiver station.

    摘要翻译： 这里描述了用于向发射机站提供具有共同码率的CQI反馈的方法和装置。 在一个实施方式中，所述方法可以包括经由k个空间信道与发射机站通信地链接到发射机站的接收机站，所述空间信道向发射机站发射指示调制电平供发射机站使用以发射（即，配置为 传输）要发送到接收站的k个信号流中的第一个。 第一CQI还可以包括由发射机站用于发射信号的第一个信号流中的第一个信号以及将其余的k-1个附加信号流发射到接收机站的公共码率。 接收机站还可以向发射机站k-1发送额外的CQI，以向发射机台发射要由发射机站用于向接收机发射k-1个附加信号流的k-1个调制等级。