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    • 51. 发明授权
    • Detection of cloned communication units based on message contents
    • 基于消息内容检测克隆的通信单元
    • US06999751B2
    • 2006-02-14
    • US10820655
    • 2004-04-08
    • Dean E. ThorsonWayne A. Keels
    • Dean E. ThorsonWayne A. Keels
    • H04M1/66
    • H04M3/16H04M2207/18
    • A method (FIG. 3), corresponding call screening unit, and base station (FIG. 2), suitable for detecting cloned communication units (111 or 113), are operable to receive a first response message and a second response message (305); determine whether identification fields (ESNs, MINs) corresponding to the response messages are equivalent (307); and if so, assess whether message contents or message properties corresponding to the response messages are not correlated (311) thus indicating the response messages are from different communication units; and when not correlated, decide that one of the response messages corresponds to a cloned communication unit (313).
    • 适用于检测克隆通信单元(111或113)的方法(图3),相应的呼叫筛选单元和基站(图2)可操作以接收第一响应消息和第二响应消息(305) ; 确定与响应消息相对应的标识字段(ESN,MIN)是否相等(307); 如果是,则评估与响应消息相对应的消息内容或消息属性是否不相关(311),从而指示来自不同通信单元的响应消息; 并且当不相关时,确定响应消息中的一个对应于克隆的通信单元(313)。
    • 52. 发明授权
    • Method and apparatus for changing assignment of receiver fingers
    • 用于改变接收器手指的分配的方法和装置
    • US06795411B1
    • 2004-09-21
    • US09522093
    • 2000-03-09
    • Suzanne Hernandez DiñoMuriel A. ChristensenWei ZouRavi K. IyerDean E. Thorson
    • Suzanne Hernandez DiñoMuriel A. ChristensenWei ZouRavi K. IyerDean E. Thorson
    • H04Q700
    • H04W52/50H04W52/08H04W52/60
    • An apparatus and method changes an assignment of a receiver channel element (302a-302n), such as a RAKE receiver finger based on transmit power control information (212), such as a power control bit or other suitable information, that is used as part of a closed loop transmit power control system between a transmitter and receiver. In one embodiment, a transmit power control information generator (204) produces the transmit power control information (212) on a per channel basis based on received symbol energy (210) of a received spread spectrum signal (202). A receiver channel element management module (206), analyzes the transmit power control information (212) and produces receiver channel element control information (214) to suitably change assignment of receiver channel elements, such as receiver fingers, based on the transmit power control information (212). The reassignment of fingers is rapid and provides close tracking of rapidly changing radio frequency environments.
    • 一种装置和方法基于诸如功率控制位或其他合适的信息的发射功率控制信息(212)来改变诸如RAKE接收机手指之类的接收机信道单元(302a-302n)的分配,其被用作部分 的发射机和接收机之间的闭环发射功率控制系统。 在一个实施例中,发射功率控制信息产生器(204)基于接收到的扩频信号(202)的接收符号能量(210)在每个信道的基础上产生发射功率控制信息(212)。 一种接收机信道单元管理模块(206),分析发射功率控制信息(212)并产生接收机信道单元控制信息(214),以便基于发射功率控制信息适当改变诸如接收机手指之类的接收机信道单元的分配 (212)。 手指的重新分配是快速的,并提供对快速变化的射频环境的紧密跟踪。
    • 54. 发明授权
    • Radiotelephone receiver and method with improved dynamic range and DC offset correction
    • 无线电话接收机和具有改进的动态范围和直流偏移校正的方法
    • US06321073B1
    • 2001-11-20
    • US09495162
    • 2000-01-31
    • Yuda Y. LuzAriel LuzzattoDean E. Thorson
    • Yuda Y. LuzAriel LuzzattoDean E. Thorson
    • H04B106
    • H04B1/30H03G3/3068H03G3/3078
    • An automatic gain control apparatus (106) and method for a radiotelephone receiver employs stored inverse transfer function data (400) of the radiotelephone receiver and a gain estimation circuit (200). The gain estimation circuit (200) estimates the input power of received signal (103) and determines a required gain based on a nonlinear portion of the inverse transfer function data (400) of the radiotelephone receiver to provide an improved dynamic range of the receiver. The apparatus and method performs convergence within one iteration to perform fast gain control. In addition, if desired, a DC offset compensation circuit, such as a feedforward DC offset compensation circuit (202), compensates the digital representation of the input signal for use by the gain estimation circuit (200).
    • 一种无线电话接收机的自动增益控制装置(106)和方法,采用无线电话接收机的反向传递函数数据(400)和增益估计电路(200)。 增益估计电路(200)估计接收信号(103)的输入功率,并且基于无线电话接收机的逆传递函数数据(400)的非线性部分确定所需的增益,以提供接收机的改进的动态范围。 该装置和方法在一次迭代中执行收敛以执行快速增益控制。 此外,如果需要,诸如前馈DC偏移补偿电路(202)的DC偏移补偿电路补偿输入信号的数字表示以供增益估计电路(200)使用。