Methods and apparatus for beamforming

    公开(公告)号:US10050686B2

    公开(公告)日:2018-08-14

    申请号:US14424121

    申请日:2012-08-31

    Abstract: Systems and techniques for carrier aggregated beamforming using elevation control. A base station determines a first elevation to be used for transmission to a user device using a first carrier, for example, based on information received from the user device. A second elevation, for transmission to the user device based on the second carrier, is determined based at least in part on the elevation information determined for the first carrier. The first and second carriers may be used by the same base station or by different base stations, and using elevation information determined for the first carrier to determine elevation information for the second carrier avoids computation and signaling needed for separate determination of the elevation information for the second carrier.

    Method and system for codebook-based closed-loop MIMO using common pilots and analog feedback
    34.
    发明授权
    Method and system for codebook-based closed-loop MIMO using common pilots and analog feedback 有权
    使用公共导频和模拟反馈的基于码本的闭环MIMO的方法和系统

    公开(公告)号:US08204014B2

    公开(公告)日:2012-06-19

    申请号:US12405307

    申请日:2009-03-17

    Abstract: A method and system that enables the usage of sounding-based feedback or analog feedback in a MIMO communication system with non-beamformed or broadcast pilot symbols is disclosed. The mobile station may employ a feedback channel to send a sounding waveform to a base station, a feedforward channel to receive from the base station codebook weights derived from the send sounding waveform, a receiver to receive communication from the base station, and a processor to detect beamformed data from the received communication and received codebook weights from the base station. The base station processes the sounding waveform to determine codebook weights on groups of subcarriers. Additionally, the base station transmits the beamformed payload and broadcast pilots to the mobile station.

    Abstract translation: 公开了一种能够在具有非波束形成或广播导频符号的MIMO通信系统中使用基于声音的反馈或模拟反馈的方法和系统。 移动台可以使用反馈信道向基站发送探测波形,从基站接收来自发送探测波形的码本的前馈信道,从基站接收通信的接收机和处理器 检测来自接收到的通信的波束形成的数据和从基站接收的码本权重。 基站处理探测波形以确定子载波组上的码本权重。 此外,基站将波束形成的有效载荷和广播导频发送到移动台。

    METHOD AND SYSTEM FOR CODEBOOK-BASED CLOSED-LOOP MIMO USING COMMON PILOTS AND ANALOG FEEDBACK
    35.
    发明申请
    METHOD AND SYSTEM FOR CODEBOOK-BASED CLOSED-LOOP MIMO USING COMMON PILOTS AND ANALOG FEEDBACK 有权
    使用通用引导和模拟反馈的基于代码库的闭环MIMO的方法和系统

    公开(公告)号:US20090238303A1

    公开(公告)日:2009-09-24

    申请号:US12405307

    申请日:2009-03-17

    Abstract: A method and system that enables the usage of sounding-based feedback or analog feedback in a MIMO communication system with non-beamformed or broadcast pilot symbols is disclosed. The mobile station may employ a feedback channel to send a sounding waveform to a base station, a feedforward channel to receive from the base station codebook weights derived from the send sounding waveform, a receiver to receive communication from the base station, and a processor to detect beamformed data from the received communication and received codebook weights from the base station. The base station processes the sounding waveform to determine codebook weights on groups of subcarriers. Additionally, the base station transmits the beamformed payload and broadcast pilots to the mobile station.

    Abstract translation: 公开了一种能够在具有非波束形成或广播导频符号的MIMO通信系统中使用基于声音的反馈或模拟反馈的方法和系统。 移动台可以使用反馈信道向基站发送探测波形,从基站接收来自发送探测波形的码本的前馈信道,从基站接收通信的接收机和处理器 检测来自接收到的通信的波束形成的数据和从基站接收的码本权重。 基站处理探测波形以确定子载波组上的码本权重。 此外,基站将波束形成的有效载荷和广播导频发送到移动台。

    RETRACTABLE STOP ASSEMBLY
    36.
    发明申请
    RETRACTABLE STOP ASSEMBLY 审中-公开
    可重复停止组件

    公开(公告)号:US20070175729A1

    公开(公告)日:2007-08-02

    申请号:US11275861

    申请日:2006-02-01

    CPC classification number: B65G47/8823 B65G2205/06

    Abstract: A power operated retractable stop assembly includes a body, a drive arm, and a stop arm. The drive arm is pivotable between a pre-locked position and an unlocked position. There is a locked position between the pre-locked position and the unlocked position. The stop arm is pivotally mounted to the body, has a front side for engaging a workpiece, and a back side for engaging the drive arm. A rotary driving means is connected to a reciprocatable member that drives the drive arm.

    Abstract translation: 动力可伸缩止动组件包括主体,驱动臂和止动臂。 驱动臂可在预锁定位置和解锁位置之间枢转。 在锁定位置和解锁位置之间存在锁定位置。 止动臂枢转地安装到主体上,具有用于接合工件的前侧和用于接合驱动臂的后侧。 旋转驱动装置连接到驱动驱动臂的可往复运动的构件。

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