Power loading in MU-MIMO
    114.
    发明授权
    Power loading in MU-MIMO 有权
    MU-MIMO中的功率负载

    公开(公告)号:US08554261B2

    公开(公告)日:2013-10-08

    申请号:US12845482

    申请日:2010-07-28

    IPC分类号: H04B7/00

    摘要: Embodiments of a system and method for transmitting data from an access point in a multiple user multiple input multiple output (MU-MIMO) system are provided. A first indication of signal quality (ISQ) is received at the access point from a first station and a second ISQ is received from a second station. The access point sets a first power level and a first modulation and coding scheme (MCS) for transmission of a first aggregated media access control (MAC) protocol data unit (A-MPDU) to the first station as a function of the first ISQ and an amount of payload data corresponding to the first A-MPDU. The access point also sets a second power level and a second MCS for transmission of a second A-MPDU as a function of the second ISQ and an amount of payload data corresponding to the second A-MPDU.

    摘要翻译: 提供了一种用于在多用户多输入多输出(MU-MIMO)系统中从接入点发送数据的系统和方法的实施例。 信号质量(ISQ)的第一指示在第一站的接入点处接收,并且从第二站接收第二ISQ。 接入点设置第一功率电平和第一调制和编码方案(MCS),用于作为第一ISQ的函数将第一聚合介质访问控制(MAC)协议数据单元(A-MPDU)传输到第一站,以及 与第一A-MPDU对应的有效载荷数据量。 接入点还设置第二功率电平和第二MCS,用于作为第二ISQ的函数和与第二A-MPDU对应的有效载荷数据的量的第二A-MPDU的传输。

    MOBILE DEVICE TRANSMITTER AND METHODS FOR TRANSMITTING SIGNALS IN DIFFERENT SIGNAL DIMENSIONS FOR 3GPP LTE
    115.
    发明申请
    MOBILE DEVICE TRANSMITTER AND METHODS FOR TRANSMITTING SIGNALS IN DIFFERENT SIGNAL DIMENSIONS FOR 3GPP LTE 审中-公开
    移动设备发射机和用于在3GPP LTE的不同信号尺寸中发送信号的方法

    公开(公告)号:US20130243118A1

    公开(公告)日:2013-09-19

    申请号:US13895555

    申请日:2013-05-16

    IPC分类号: H04L25/08

    摘要: Embodiments of a mobile device transmitter and methods for transmitting signals in different signal dimensions are generally disclosed herein. The mobile device transmitter comprises a mapper to map a block of two or more input modulation symbols to different signal dimensions comprising two or more spatial dimensions, and linear transform circuitry to perform a linear transform on the block of mapped input modulation symbols to generate a block of preceded complex-valued output symbols such that each output symbol carries some information of more than one input modulation symbol. The mobile device also comprises transmitter circuitry to generate time-domain signals from the blocks of precoded complex-valued output symbols for each of the spatial dimensions for transmission using the two or more antennas. The precoded complex-valued output symbols are mapped to different signal dimensions comprising at least different frequency dimensions prior to transmission.

    摘要翻译: 移动设备发射机的实施例和用于在不同信号尺寸上传输信号的方法一般在此公开。 移动设备发射机包括映射器,以将两个或更多个输入调制符号的块映射到包括两个或更多个空间维度的不同信号维度,以及线性变换电路,用于对映射的输入调制符号块执行线性变换以产生块 之前的复值输出符号,使得每个输出符号携带多于一个输入调制符号的一些信息。 移动设备还包括发射机电路,用于根据用于使用两个或更多个天线进行传输的每个空间维度,从预编码的复值输出符号块生成时域信号。 预编码的复值输出符号被映射到在传输之前至少包括不同频率尺寸的不同信号尺寸。

    Dynamic interference avoidance with asynchronous HARQ
    118.
    发明授权
    Dynamic interference avoidance with asynchronous HARQ 有权
    使用异步HARQ的动态干扰避免

    公开(公告)号:US08261151B2

    公开(公告)日:2012-09-04

    申请号:US12317112

    申请日:2008-12-19

    申请人: Huaning Niu Hujun Yin

    发明人: Huaning Niu Hujun Yin

    IPC分类号: G08C25/02 H04L1/18 H04L1/14

    摘要: In a wireless communications network, a wireless device may examine the received signal to determine the strength of the received signal, and also determine the level of interference and noise. If a retransmission is needed due to a message being incorrectly received, these factors may then be processed to estimate whether the probable cause of poor reception is interference from a neighboring network. If such interference is the likely cause, the retransmission may be changed to a different time and/or to different frequencies in a subsequent frame, so that the interference from the neighboring network is less likely to reoccur.

    摘要翻译: 在无线通信网络中,无线设备可以检查所接收的信号以确定接收信号的强度,并且还确定干扰和噪声的水平。 如果由于消息被不正确地接收而需要重传,则可以对这些因素进行处理以估计接收不良的可能原因是否是来自相邻网络的干扰。 如果这种干扰是可能的原因,则可以在后续帧中将重传改变为不同的时间和/或不同的频率,使得来自相邻网络的干扰不太可能再次出现。

    System and method for training different types of directional antennas that adapts the training sequence length to the number of antennas
    119.
    发明授权
    System and method for training different types of directional antennas that adapts the training sequence length to the number of antennas 有权
    用于训练将训练序列长度适配到天线数量的不同类型的定向天线的系统和方法

    公开(公告)号:US08249513B2

    公开(公告)日:2012-08-21

    申请号:US12189726

    申请日:2008-08-11

    IPC分类号: H04B1/00 H04M1/00

    摘要: A system and method of training antennas for two devices having different types of directional antennas in a wireless network is disclosed. The method includes transmitting a plurality of estimation training sequences from a transmit directional antenna to a receive directional antenna. The length of at least one of the plurality of training sequences is adapted to a number of antenna elements at one of the transmit and receive directional antennas. The method further includes transmitting data to the receiver via the transmit directional antenna tuned with an antenna parameter that is selected based at least in part on the plurality of estimation sequences.

    摘要翻译: 公开了一种用于在无线网络中训练具有不同类型定向天线的两个设备的天线的系统和方法。 该方法包括从发射定向天线向接收定向天线发送多个估计训练序列。 所述多个训练序列中的至少一个训练序列的长度适合于所述发射和接收定向天线之一处的多个天线元件。 该方法还包括经由经由至少部分地基于多个估计序列选择的天线参数调谐的发射定向天线向接收机发送数据。

    System and method for acquiring beamforming vectors using training sequences with adaptive spreading gains
    120.
    发明授权
    System and method for acquiring beamforming vectors using training sequences with adaptive spreading gains 有权
    使用具有自适应扩展增益的训练序列来获取波束成形向量的系统和方法

    公开(公告)号:US08223873B2

    公开(公告)日:2012-07-17

    申请号:US12144574

    申请日:2008-06-23

    IPC分类号: H04B7/02

    摘要: A method and system for acquiring beamforming vectors using multiple spreading sequence spreading gains is disclosed. One embodiment of the invention allows time and power to be saved by spreading a training sequence with spreading sequences of different gains in different iterations of an iterative beamforming acquisition procedure. In one embodiment of the invention, the method comprises modulating, at a first station, a first training sequence with a first source beamforming vector, wherein the first training sequence has a first spreading gain, transmitting the modulated first training sequence to a second station, receiving a first response signal from the second station, obtaining a second source beamforming vector based on the first response signal, modulating, at the first station, a second training sequence with the second source beamforming vector, wherein the second training signal has a second spreading gain which is different from the first spreading gain, transmitting the modulated second training sequence to the second station, receiving a second response signal from the second station, obtaining a third source beamforming vector based on the second response signal, and determining whether to use the third source beamforming vector to modulate a data signal to be transmitted to the second station.

    摘要翻译: 公开了一种使用多个扩展序列扩展增益获取波束成形向量的方法和系统。 本发明的一个实施例允许通过在迭代波束形成获取过程的不同迭代中扩展具有不同增益的扩展序列的训练序列来节省时间和功率。 在本发明的一个实施例中,该方法包括在第一站处利用第一源波束形成向量来调制第一训练序列,其中第一训练序列具有第一扩展增益,将调制的第一训练序列发送到第二站, 从所述第二站接收第一响应信号,基于所述第一响应信号获得第二源波束成形向量,在所述第一站处调制具有所述第二源波束形成向量的第二训练序列,其中所述第二训练信号具有第二扩频 与第一扩展增益不同的增益,将调制的第二训练序列发送到第二站,从第二站接收第二响应信号,基于第二响应信号获得第三源波束成形向量,以及确定是否使用 第三源波束成形矢量来调制要发送到第二站的数据信号。