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47 条记录 (耗时 0.03 秒)

    Encoder measurement based on layer thickness
    12.
    发明授权
    Encoder measurement based on layer thickness 失效
    基于层厚度的编码器测量

    公开(公告)号：US06970255B1

    公开(公告)日：2005-11-29

    申请号：US10422232

    申请日：2003-04-23

    申请人： Blaine R. Spady ,  John D. Heaton ,  Weidong Yang ,  Roger R. Lowe-Webb

    发明人： Blaine R. Spady ,  John D. Heaton ,  Weidong Yang ,  Roger R. Lowe-Webb

    IPC分类号： G01B11/14 ,  G01D5/34 ,  G01D5/347

    CPC分类号： G01D5/34707

    摘要： An encoder includes a layer on the scale that has a thickness that varies as a function of position along the length of the scale. The position of the sensor head with respect to the scale may be determined by measuring the thickness of the layer or index of refraction, e.g., using a reflectometer, and converting the thickness to the lateral position. In one embodiment, the thickness of the layer is used to provide a rough position of the sensor head with respect to the scale and an alignment target that includes periodic patterns on both the sensor head and scale is used to provide a refined position.

    摘要翻译： 编码器包括刻度上的层，其厚度随着刻度长度的位置而变化。 传感器头相对于刻度尺的位置可以通过测量层的厚度或折射率来确定，例如使用反射计，并将厚度转换成横向位置。 在一个实施例中，层的厚度用于提供传感器头相对于标尺的粗略位置，并且使用包括传感器头部和标尺上的周期性图案的对准目标来提供精细位置。

    Load balancing method for wireless communication systems
    13.
    发明申请
    Load balancing method for wireless communication systems 审中-公开
    无线通信系统的负载均衡方法

    公开(公告)号：US20060293060A1

    公开(公告)日：2006-12-28

    申请号：US11244973

    申请日：2005-10-05

    申请人： Weidong Yang ,  John Grabner ,  Guanghan Xu ,  Hang Jin ,  Hang Li

    发明人： Weidong Yang ,  John Grabner ,  Guanghan Xu ,  Hang Jin ,  Hang Li

    IPC分类号： H04Q7/20

    CPC分类号： H04W36/22

    摘要： A method and system is disclosed for load balancing in a wireless communication system. The method has two major processes for load balancing purpose: the first process moves a mobile terminal from its host base station to some less loaded base station after the expiration of a switch time interval determined by the signal strength difference between the original host base station and the base station that the mobile terminal is moving to; the second process moves the mobile terminal from its host base station to the base station with the strongest signal strength periodically.

    摘要翻译： 公开了一种用于无线通信系统中的负载平衡的方法和系统。 该方法具有负载均衡目的的两个主要过程：第一过程将移动终端从其主机基站移动到在原始主机基站与原始主机基站之间的信号强度差确定的切换时间间隔期满之后的一些较少加载的基站 移动终端正在移动的基站; 第二过程周期性地以最强的信号强度将移动终端从其主机基站移动到基站。

    Method and system for generating multiple radiation patterns using transform matrix
    14.
    发明申请
    Method and system for generating multiple radiation patterns using transform matrix 有权
    使用变换矩阵生成多个辐射图的方法和系统

    公开(公告)号：US20060199615A1

    公开(公告)日：2006-09-07

    申请号：US11346762

    申请日：2006-02-03

    申请人： Hang Jin ,  Brian Kurtz ,  Weidong Yang ,  Daniel Wee ,  Phil Davis ,  John Grabner

    发明人： Hang Jin ,  Brian Kurtz ,  Weidong Yang ,  Daniel Wee ,  Phil Davis ,  John Grabner

    IPC分类号： H04M1/00

    CPC分类号： H01Q3/40 ,  H01Q1/246 ,  H01Q3/26 ,  H01Q25/00

    摘要： A system and method for generating multiple radiation patterns is disclosed here. An antenna system comprises an antenna array having one or more antennas for providing a first radiation pattern and a second radiation pattern, a transform matrix for transforming one or more inputs into one or more outputs according to a transform function, wherein the outputs of the transform matrix provide signals to the antennas with predetermined phases and magnitudes for generating the first and second radiation patterns, and a transmitter for providing a first set of signals corresponding to the first radiation pattern and a second set of signals corresponding to the second radiation pattern to inputs of the transform matrix.

    摘要翻译： 这里公开了一种用于产生多个辐射图案的系统和方法。 天线系统包括具有一个或多个天线的天线阵列，用于提供第一辐射图案和第二辐射图案，用于根据变换函数将一个或多个输入转换为一个或多个输出的变换矩阵，其中变换的输出 矩阵向天线提供具有用于产生第一和第二辐射图案的预定相位和幅度的信号，以及用于提供对应于第一辐射图案的第一组信号和与第二辐射图对应的第二组信号的发射机， 的变换矩阵。

    METHOD AND SYSTEM FOR INTERFERENCE REDUCTION
    16.
    发明申请
    METHOD AND SYSTEM FOR INTERFERENCE REDUCTION 有权
    用于干扰减少的方法和系统

    公开(公告)号：US20110076954A1

    公开(公告)日：2011-03-31

    申请号：US12961741

    申请日：2010-12-07

    申请人： Daniel Wee ,  Hang Li ,  Weidong Yang ,  Guanghan Xu

    发明人： Daniel Wee ,  Hang Li ,  Weidong Yang ,  Guanghan Xu

    IPC分类号： H04B1/00

    CPC分类号： H04W16/18 ,  H04B1/7103 ,  H04B2201/709709 ,  H04J11/005 ,  H04J13/16 ,  H04W16/10 ,  H04W28/18 ,  H04W72/00 ,  H04W72/08 ,  H04W88/08 ,  H04W88/12

    摘要： A method and system for interference reduction for telecommunication systems are disclosed. The system comprises a base station control device (BCD) for configuring one or more parameters for operating one or more base stations (BSs), a first BS covering a first cell having one or more mobile terminals therein, a second BS covering a second cell neighboring to the first cell and sharing a predetermined frequency band with the first cell, wherein one or more radio frames constructed for communications between the first BS and any mobile terminal of the first cell and one or more radio frames constructed for communications between the second BS and any mobile terminal of the second cell are distinguishable by defining different channel configuration sets having one or more operation parameters, wherein the parameters includes a training sequence, a spreading code, and a channel observation window position.

    摘要翻译： 公开了用于电信系统的干扰减少的方法和系统。 该系统包括用于配置用于操作一个或多个基站（BS）的一个或多个参数的基站控制设备（BCD），覆盖其中具有一个或多个移动终端的第一小区的第一BS，覆盖第二小区的第二BS 与所述第一小区相邻并且与所述第一小区共享预定频带，其中为所述第一小区和所述第一小区的任何移动终端之间的通信而构造的一个或多个无线电帧以及为所述第二小区之间的通信而构造的一个或多个无线电帧 并且通过定义具有一个或多个操作参数的不同的信道配置集来区分第二小区的任何移动终端，其中参数包括训练序列，扩展码和信道观察窗口位置。

    Techniques for generating and detecting a physical random access channel signal in a wireless communication system
    17.
    发明授权
    Techniques for generating and detecting a physical random access channel signal in a wireless communication system 有权
    用于在无线通信系统中生成和检测物理随机接入信道信号的技术

    公开(公告)号：US07843970B2

    公开(公告)日：2010-11-30

    申请号：US12338338

    申请日：2008-12-18

    申请人： Weidong Yang

    发明人： Weidong Yang

    IPC分类号： H04J3/00

    CPC分类号： H04L27/2647 ,  H04L27/2655

    摘要： A technique for detecting a physical random access channel (PRACH) signal includes demasking a received signal with a demasking signal. In this case, the demasking removes a PRACH root index component from the received signal. A fast Fourier transform is performed on the demasked received signal to provide a time-domain signal. At least three peaks of the time-domain signal from all antennas are then power combined. Finally, a determination is made as to whether a preamble index for the PRACH signal matches a known preamble index based on an output power of the time-domain signal at the at least three peaks.

    摘要翻译： 一种用于检测物理随机存取信道（PRACH）信号的技术包括用去屏蔽信号去除接收的信号。 在这种情况下，拆卸从接收到的信号中去除了PRACH根索引分量。 对被解除的接收信号执行快速傅立叶变换以提供时域信号。 然后将来自所有天线的时域信号的至少三个峰值进行功率合并。 最后，确定基于在至少三个峰值处的时域信号的输出功率，PRACH信号的前导码索引是否与已知的前导码索引匹配。

    Alignment target with designed in offset
    19.
    发明授权
    Alignment target with designed in offset 有权
    对准目标设计在偏移

    公开(公告)号：US07230705B1

    公开(公告)日：2007-06-12

    申请号：US11075228

    申请日：2005-03-07

    申请人： Weidong Yang ,  Roger R. Lowe-Webb ,  John D. Heaton ,  Guonguang Li

    发明人： Weidong Yang ,  Roger R. Lowe-Webb ,  John D. Heaton ,  Guonguang Li

    IPC分类号： G01B11/00 ,  G01B11/14 ,  H01L21/76 ,  H01L23/544

    CPC分类号： G03F7/70633 ,  G03F9/7076

    摘要： An alignment target includes periodic patterns on two elements. The alignment target includes two locations, at least one of which has a designed in offset. In one embodiment, both measurement locations have a designed in offset of the same magnitude but opposite directions. For example, two separate overlay patterns that are mirror images of each other may be used. Alternatively, the magnitudes and/or directions may vary between the measurement locations. The radiation that interacts with the measurement locations is compared. The calculated difference is extremely sensitive to any alignment error. If the difference between the patterns is approximately zero, the elements are properly aligned. When an alignment error is introduced, however, calculated difference can be used to determine the error. In one embodiment, the alignment target is modeled to determine the alignment error. In another embodiment, additional overlay patterns with additional reference offsets are used to determine the alignment error.

    摘要翻译： 对齐目标包括两个元素上的周期性图案。 对准目标包括两个位置，其中至少一个具有偏移设计。 在一个实施例中，两个测量位置具有相同幅度但相反方向偏移的设计。 例如，可以使用作为彼此的镜像的两个单独的覆盖图案。 或者，幅度和/或方向可以在测量位置之间变化。 比较与测量位置相互作用的辐射。 计算的差异对任何对准误差都非常敏感。 如果图案之间的差异大约为零，则元素将被正确对齐。 然而，当引入对准误差时，可以使用计算出的差异来确定误差。 在一个实施例中，对准目标被建模以确定对准误差。 在另一个实施例中，使用具有附加参考偏移的附加覆盖图案来确定对准误差。

    Method and system for reducing wireless multi-cell interferences through segregated channel assignments and segregated antenna beams
    20.
    发明授权
    Method and system for reducing wireless multi-cell interferences through segregated channel assignments and segregated antenna beams 有权

    公开(公告)号：US07151937B2

    公开(公告)日：2006-12-19

    申请号：US11326180

    申请日：2006-01-04

    申请人： Hang Jin ,  Weidong Yang

    发明人： Hang Jin ,  Weidong Yang

    IPC分类号： H04Q7/20

    CPC分类号： H04W16/02 ,  H04W16/12 ,  H04W16/24 ,  H04W72/00 ,  H04W72/082

    摘要： A wireless communication system is disclosed. An available frequency spectrum is divided into multiple channels, a first wireless communication coverage unit is then segregated into a first number of geographical segments. After the segregated channels are grouped into a second number of channel blocks, each channel block is assigned to the segregated geographical segments with predetermined priorities. The above steps are repeated in a fashion that the channels in different channel blocks exhibit no higher mutual interference than the channels in the same channel block, and the channel block assigned for each segregated segment of the first wireless communication coverage unit is different from the channel block assigned for the segregated segment of a second wireless communication coverage unit that immediately borders with the segregated segment of the first wireless coverage unit even if the first and second wireless communication coverage units share the same frequency spectrum.