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    CQI DEFINITION FOR TRANSMISSION MODE 9 IN LTE-ADVANCED
    111.
    发明申请
    CQI DEFINITION FOR TRANSMISSION MODE 9 IN LTE-ADVANCED 有权
    LTE-ADVANCED中传输模式9的CQI定义

    公开(公告)号：US20120176965A1

    公开(公告)日：2012-07-12

    申请号：US13167941

    申请日：2011-06-24

    申请人： Yuan Zhu ,  Qinghua Li ,  Xiaogang Chen

    发明人： Yuan Zhu ,  Qinghua Li ,  Xiaogang Chen

    IPC分类号： H04W28/18

    CPC分类号： H04W24/02 ,  H04B7/0689 ,  H04L1/0026 ,  H04L1/003 ,  H04L1/1861 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/0048 ,  H04L5/0057 ,  H04L5/0073 ,  H04L25/03949 ,  H04W24/00 ,  H04W72/00 ,  H04W72/04 ,  H04W88/08

    摘要： An evolved Node B (eNB) in a 3GPP LTE-based network receives Channel State Information-Reference Signal (CSI-RS) from a User Equipment (UE) that is configured with Precoder Matrix Indictor (PMI) disabled. A channel is estimated between the eNB and the UE for link adaptation in Transmission Mode 9 (TM9) based on CSI-RS by the UE and SRS by the eNB. CQI is calculated at UE such that if a number of CSI-RS antenna ports equals one, TM9 transmission from the eNB to the UE uses a predetermined single antenna port. If the number of CSI-RS antenna ports equals two, TM9 transmission from the eNB to the UE uses transmit diversity. If the number of CSI-RS antenna ports does not equal one or two, TM9 transmission from the eNB to the UE uses spatial multiplexing based on a rank-1 precoder that is determined from a wideband channel covariance matrix R.

    摘要翻译： 基于3GPP LTE的网络中的演进节点B（eNB）从被配置为禁用预编码矩阵指示符（PMI）的用户设备（UE）接收信道状态信息参考信号（CSI-RS）。 在eNB和UE之间估计基于UE的SRS-RS的传输模式9（TM9）中的链路自适应的信道。 在UE处计算CQI，使得如果CSI-RS天线端口的数量等于1，则从eNB到UE的TM9传输使用预定的单个天线端口。 如果CSI-RS天线端口的数量等于2，则从eNB到UE的TM9传输使用发送分集。 如果CSI-RS天线端口的数量不等于1或2，则从eNB到UE的TM9传输使用基于从宽带信道协方差矩阵R确定的秩1预编码器的空间复用。

    Enabling Coexistence of High-Density and Low-Density Transmissions
    112.
    发明申请
    Enabling Coexistence of High-Density and Low-Density Transmissions 有权
    实现高密度和低密度传输的共存

    公开(公告)号：US20120163181A1

    公开(公告)日：2012-06-28

    申请号：US12978560

    申请日：2010-12-25

    申请人： Feng Xue ,  Qinghua Li ,  Wendy C. Wong

    发明人： Feng Xue ,  Qinghua Li ,  Wendy C. Wong

    IPC分类号： H04L12/26

    CPC分类号： H04W52/0216 ,  H04W52/0238 ,  H04W52/24 ,  H04W52/286 ,  H04W52/367 ,  H04W52/383 ,  H04W72/0446 ,  H04W74/002 ,  H04W74/0808 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146

    摘要： Embodiments may comprise logic such as hardware and/or code to enable coexistence of high-density and low-density transmissions with a modified CSMA protocol. Embodiments include a self-CTS (self clear to send) packet transmission prior to transmission of a ready to send (RTS) signal when initiating a high density transmission amidst legacy devices. In many embodiments, the self-CTS or the RTS includes a network allocation vector (NAV) having a value for the duration of the transmission. In some embodiments, the self-CTS may include a flag or bit to indicate the Shading Transmission Starts (STS).

    摘要翻译： 实施例可以包括诸如硬件和/或代码的逻辑，以使高密度和低密度传输与修改的CSMA协议共存。 实施例包括在传输即将发送（RTS）信号之前发起传统设备中的高密度传输的自CTS（自清除发送）分组传输。 在许多实施例中，自CTS或RTS包括具有传输持续时间的值的网络分配向量（NAV）。 在一些实施例中，自CTS可以包括指示着色传输开始（STS）的标志或位。

    FEEDBACK SCHEME FOR MU-MIMO
    115.
    发明申请
    FEEDBACK SCHEME FOR MU-MIMO 有权
    用于MU-MIMO的反馈方案

    公开(公告)号：US20120026991A1

    公开(公告)日：2012-02-02

    申请号：US12845515

    申请日：2010-07-28

    申请人： Huaning Niu ,  Qinghua Li ,  Honggang Li

    发明人： Huaning Niu ,  Qinghua Li ,  Honggang Li

    IPC分类号： H04W40/00 ,  H04L27/28

    CPC分类号： H04B7/0417 ,  H04B7/0452 ,  H04B7/0643 ,  H04L1/0003 ,  H04L1/0027 ,  H04L1/0029 ,  H04L5/0053 ,  H04L5/0073

    摘要： Embodiments of a system and method for managing feedback in a MU-MIMO system. An access point can announce one or more of mobile stations that are to receive downlink information in a first frame. The access point can also send a sounding package to the one or more mobile stations and receive feedback from the one or more mobile stations according to the feedback schedule. The feedback may be based on the reception of the sounding package.

    摘要翻译： 用于管理MU-MIMO系统中的反馈的系统和方法的实施例。 接入点可以通知在第一帧中接收下行链路信息的一个或多个移动台。 接入点还可以向一个或多个移动站发送探测包，并根据反馈调度从一个或多个移动台接收反馈。 反馈可以基于发声包的接收。

    System and Method Capable of Implicit Feedback for the Devices with An Unequal Number of Transmitter and Receiver Chains in a Wireless Local Area Network
    119.
    发明申请
    System and Method Capable of Implicit Feedback for the Devices with An Unequal Number of Transmitter and Receiver Chains in a Wireless Local Area Network 有权
    无线局域网中具有不等数目的发射机和接收链的设备的隐式反馈的系统和方法

    公开(公告)号：US20110053545A1

    公开(公告)日：2011-03-03

    申请号：US12940700

    申请日：2010-11-05

    申请人： Qinghua Li ,  Xintian Eddie Lin

    发明人： Qinghua Li ,  Xintian Eddie Lin

    IPC分类号： H04B1/06

    CPC分类号： H04L1/0675 ,  H04B7/0421

    摘要： An embodiment of the present invention provides a wireless station (STA) capable of implicit feedback in a wireless local area network, comprising at least one power amplifier, a plurality of antennas capable of being connected with said at least one power amplifier, and a switch capable of switching the connection between said plurality of antennas and said at least one power amplifier thereby enabling said wireless station to sound a complete channel matrix for an access point (AP) in communication with said wireless station (STA).

    摘要翻译： 本发明的实施例提供一种能够在无线局域网中进行隐含反馈的无线站（STA），其包括至少一个功率放大器，能够与所述至少一个功率放大器连接的多个天线，以及开关 能够切换所述多个天线与所述至少一个功率放大器之间的连接，从而使得所述无线台能够对与所述无线站（STA）通信的接入点（AP）发出完整的信道矩阵。