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    SYSTEM AND METHOD FOR TRANSMITTING DATA IN A COMMUNICATION NETWORK
    52.
    发明申请
    SYSTEM AND METHOD FOR TRANSMITTING DATA IN A COMMUNICATION NETWORK 有权
    用于在通信网络中发送数据的系统和方法

    公开(公告)号：US20090075586A1

    公开(公告)日：2009-03-19

    申请号：US11855569

    申请日：2007-09-14

    申请人： Qinghua Li ,  Xintian E. Lin

    发明人： Qinghua Li ,  Xintian E. Lin

    IPC分类号： H04B7/14

    CPC分类号： H04B7/2606

    摘要： Disclosed is a system and method for transmitting data from a first base station to a first destination subscriber station (DSS). The first base station is capable of transmitting data directly to the first DSS through a direct route. Co-channel interference is present at neighboring cells during the transmission of the data through the direct route. The method includes selecting a relay station from a plurality of relay stations for transmitting data to the first DSS via a relay route. The relay route includes a route from the first base station to the relay station and further from the relay station to the first DSS. A height of the relay station is lower than a height of the first base station. Further, the method includes transmitting the data through the relay route when a throughput of the relay route is greater than a throughput of the direct route by a predetermined threshold.

    摘要翻译： 公开了一种用于从第一基站向第一目的用户台（DSS）发送数据的系统和方法。 第一基站能够通过直接路由将数据直接发送到第一DSS。 在通过直接路由传输数据期间，相邻小区存在同信道干扰。 该方法包括从多个中继站中选择一个中继站，用于经由中继路由向第一DSS发送数据。 中继路由包括从第一基站到中继站以及从中继站到第一DSS的路由。 中继站的高度低于第一基站的高度。 此外，该方法包括当中继路由的吞吐量大于直接路由的吞吐量预定阈值时通过中继路由发送数据。

    Method and apparatus for diversity switching control
    54.
    发明授权
    Method and apparatus for diversity switching control 失效
    用于分集切换控制的方法和装置

    公开(公告)号：US07366473B2

    公开(公告)日：2008-04-29

    申请号：US10835296

    申请日：2004-04-28

    申请人： Xintian E. Lin ,  Qinghua Li ,  Allen W. Bettner

    发明人： Xintian E. Lin ,  Qinghua Li ,  Allen W. Bettner

    IPC分类号： H04B1/00 ,  H04B15/00

    CPC分类号： H04B7/0686 ,  H04B7/0817 ,  H04B7/0831 ,  H04B7/0868

    摘要： A method and apparatus for diversity switching control are generally described herein. According to one embodiment, a diversity control network is introduced which effectively reduces the number of coaxial cables required to interface with N antennas from the conventional N cables, to N/2 thereby providing significant cost saving.

    摘要翻译： 本文一般地描述用于分集切换控制的方法和装置。 根据一个实施例，引入了一种分集控制网络，其有效地将与N个天线接口所需的同轴电缆的数量从常规N个电缆减少到N / 2，从而显着节省成本。

    PROVIDING CQI FEEDBACK TO A TRANSMITTER STATION IN A CLOSED-LOOP MIMO SYSTEM
    55.
    发明申请
    PROVIDING CQI FEEDBACK TO A TRANSMITTER STATION IN A CLOSED-LOOP MIMO SYSTEM 失效
    向闭环MIMO系统中的发射机站提供CQI反馈

    公开(公告)号：US20070253386A1

    公开(公告)日：2007-11-01

    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： H04Q7/24

    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。

    Antenna subsystem calibration apparatus and methods in spatial-division multiple-access systems
    57.
    发明授权
    Antenna subsystem calibration apparatus and methods in spatial-division multiple-access systems 有权
    天线子系统校准装置和空分多址系统的方法

    公开(公告)号：US07206550B2

    公开(公告)日：2007-04-17

    申请号：US10749904

    申请日：2003-12-29

    申请人： Qinghua Li ,  Xintian E Lin

    发明人： Qinghua Li ,  Xintian E Lin

    IPC分类号： H04B1/00 ,  H04B7/00

    CPC分类号： H04B7/0619 ,  H04B7/0617

    摘要： A wireless local area network (WLAN) includes an access point (AP), which provides communications channels to a plurality of stations. The AP supports spatial-division, multiple-access (SDMA) and accordingly includes a plurality of antenna subsystems. In order to achieve zero-forcing downlink beamforming, internal calibration procedures are occasionally performed within the AP. An internal calibration procedure includes an antenna subsystem transmitting a calibration signal. Received signals are measured at other antenna subsystems, and from these measurements, the transmit and receive chain gains are calculated for each antenna subsystem. One or more of these gains are adjusted to satisfy a primary condition, which is that the ratio of the transmit chain gain and the receive chain gain for all of the antenna subsystems are approximately equal (i.e., all of these ratios are equal to a calibration constant).

    摘要翻译： 无线局域网（WLAN）包括向多个站提供通信信道的接入点（AP）。 AP支持空分多址（SDMA），相应地包括多个天线子系统。 为了实现迫零下行链路波束形成，AP内部偶尔执行内部校准过程。 内部校准程序包括发送校准信号的天线子系统。 在其他天线子系统中测量接收信号，并从这些测量中计算每个天线子系统的发射和接收链增益。 调整这些增益中的一个或多个以满足主要条件，即，所有天线子系统的发射链增益和接收链增益的比率近似相等（即，所有这些比率都等于校准 不变）。

    Low profile sector antenna configuration
    58.
    发明授权
    Low profile sector antenna configuration 失效
    薄型扇形天线配置

    公开(公告)号：US07002518B2

    公开(公告)日：2006-02-21

    申请号：US10663097

    申请日：2003-09-15

    申请人： Xintian E. Lin ,  Qinghua Li ,  Alan E. Waltho ,  Allen W. Bettner

    发明人： Xintian E. Lin ,  Qinghua Li ,  Alan E. Waltho ,  Allen W. Bettner

    IPC分类号： H01Q1/38

    CPC分类号： H01Q1/2258 ,  H01Q1/22 ,  H01Q15/0086 ,  H01Q19/30

    摘要： An impedance plane has an elongated strip ship. The impedance plane approximates a magnetic conductor within a particular frequency band. A sector antenna is coupled to one side of the impedance plane. The sector antenna has a planar form factor with dimensions contained within the elongated strip. The sector antenna has a radiation pattern in the particular frequency band that is flared out from the impedance plane at a particular angle.

    摘要翻译： 阻抗平面具有细长带状船。 阻抗平面近似于特定频带内的磁导体。 扇形天线耦合到阻抗平面的一侧。 扇形天线具有平面形状因子，其尺寸包含在细长条中。 扇形天线具有在特定频带上以特定角度从阻抗平面向外扩展的辐射图。

    Systems and methods for discovering wireless display devices using inaudible audio signals
    60.
    发明授权
    Systems and methods for discovering wireless display devices using inaudible audio signals 有权
    使用无声音频信号发现无线显示设备的系统和方法

    公开(公告)号：US09513861B2

    公开(公告)日：2016-12-06

    申请号：US14128001

    申请日：2013-09-24

    申请人： Xintian E. Lin ,  Jie Gao ,  Qinghua Li ,  Narjala Bhasker

    发明人： Xintian E. Lin ,  Jie Gao ,  Qinghua Li ,  Narjala Bhasker

    IPC分类号： H04W4/00 ,  G06F3/14 ,  H04M3/56 ,  H04W12/06 ,  H04W76/02 ,  H04W4/16 ,  H04W8/00 ,  H04W4/04 ,  G06F9/44 ,  G09G5/12

    CPC分类号： G06F3/1423 ,  G06F9/452 ,  G09G5/12 ,  G09G2370/022 ,  G09G2370/16 ,  H04M3/567 ,  H04W4/04 ,  H04W4/043 ,  H04W4/16 ,  H04W4/80 ,  H04W8/005 ,  H04W12/06 ,  H04W76/14

    摘要： The present disclosure relates to computer-implemented systems and methods for wireless display discovery. The method may include receiving, by a computer, a selection to detect wireless display devices. The computer may include one or more processors, a radio transceiver, and a microphone. The method may also include identifying, by the radio transceiver, a plurality of wireless display device and transmitting, by the radio transceiver, respective connection requests to the plurality of wireless display devices. Additionally, the method may include transmitting, by the radio transceiver to the wireless display devices, respective requests for inaudible audio signal transmission. The method may also include receiving, by the microphone, a plurality of inaudible audio signals from the wireless display devices. Further still, the method may include determining, based at least in part on the plurality of inaudible audio signals, whether any of the plurality of wireless display devices are in the same room as the computer.

    摘要翻译： 本公开涉及用于无线显示发现的计算机实现的系统和方法。 该方法可以包括由计算机接收用于检测无线显示设备的选择。 计算机可以包括一个或多个处理器，无线电收发器和麦克风。 该方法还可以包括通过无线电收发器识别多个无线显示设备，并且由无线电收发器发送到多个无线显示设备的各自的连接请求。 另外，该方法可以包括通过无线电收发器向无线显示设备发送对于无声音频信号传输的相应请求。 该方法还可以包括由麦克风接收来自无线显示设备的多个听不见的音频信号。 此外，该方法可以包括至少部分地基于多个听不到的音频信号确定多个无线显示设备中的任何一个是否在与计算机相同的房间中。