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145 条记录 (耗时 0.029 秒)

    Method and apparatus for reliable intersystem handoff in a CDMA system
    81.
    发明授权
    Method and apparatus for reliable intersystem handoff in a CDMA system 失效
    CDMA系统中可靠的系统间切换的方法和装置

    公开(公告)号：US5937019A

    公开(公告)日：1999-08-10

    申请号：US695241

    申请日：1996-08-07

    申请人： Roberto Padovani

    发明人： Roberto Padovani

    IPC分类号： H04W36/14 ,  H04W36/18 ,  H04L7/700

    CPC分类号： H04W36/30 ,  H04W36/0066 ,  H04W36/18

    摘要： In a communications network, a network user communicates through a remote unit via at least one base station. The communications network includes a first mobile switching center for controlling communications through a first set of base stations and a second mobile switching center for controlling communications through a second set of base stations. The network also includes a service providing base station controlled by the first mobile switching center and providing service to a first transition coverage area using a first pseudorandom noise code. The first transition coverage area defines a boundary between a first system controlled by the first mobile switching center and a second system controlled by the second mobile switching center. The network further includes a passage providing base station controlled by the second mobile switching center for providing service to the first transition area using a second pseudorandom noise code offset in time by a first amount from the first pseudorandom noise code. The passage providing base station provides service to a remote unit only if the remote unit is entering the first transition coverage area while exiting the second system or is about to exit the first transition coverage area while entering the second system.

    摘要翻译： 在通信网络中，网络用户经由至少一个基站通过远程单元进行通信。 通信网络包括用于通过第一组基站控制通信的第一移动交换中心和用于通过第二组基站控制通信的第二移动交换中心。 网络还包括由第一移动交换中心控制的服务提供基站，并使用第一伪随机噪声码向第一过渡覆盖区域提供服务。 第一过渡覆盖区域定义由第一移动交换中心控制的第一系统和由第二移动交换中心控制的第二系统之间的边界。 该网络还包括通过提供由第二移动交换中心控制的基站的通道，用于使用第二伪随机噪声码偏移从第一伪随机噪声码向第一过渡区提供服务。 通过提供基站仅在远程单元进入第一过渡覆盖区域同时退出第二系统或将要在进入第二系统期间退出第一过渡覆盖区域时向远程单元提供服务。

    Method and apparatus for controlling transmission power in a CDMA cellular mobile telephone system
    85.
    发明授权
    Method and apparatus for controlling transmission power in a CDMA cellular mobile telephone system 失效
    用于控制CDMA蜂窝移动电话系统中的发射功率的方法和装置

    公开(公告)号：US5485486A

    公开(公告)日：1996-01-16

    申请号：US217003

    申请日：1994-03-23

    申请人： Klein S. Gilhousen ,  Roberto Padovani ,  Lindsay A. Weaver, Jr.

    发明人： Klein S. Gilhousen ,  Roberto Padovani ,  Lindsay A. Weaver, Jr.

    IPC分类号： H04B7/005 ,  H04B7/26 ,  H04W52/00 ,  H04W52/02 ,  H04W52/06 ,  H04W52/08 ,  H04W52/10 ,  H04W52/12 ,  H04W52/34 ,  H04W52/36 ,  H04W52/40 ,  H04W52/52 ,  H04J13/02 ,  H04B1/69 ,  H04B1/707 ,  H04J13/04

    CPC分类号： H04W52/343 ,  H04B7/2628 ,  H04W52/06 ,  H04W52/346 ,  H04W52/362 ,  H04W52/367 ,  H04W52/52 ,  H04W52/08 ,  H04W52/10 ,  H04W52/12 ,  H04W52/40

    摘要： A power control system for a cellular mobile telephone system in which system users communicate information signals between one another via at least one cell site using code division multiple access spread spectrum communication signals. The power control system controls transmission signal power for each cellular mobile telephone in the cellular mobile telephone system wherein each cellular mobile telephone has an antenna, transmitter and receiver and each cell-site also has an antenna, transmitter and receiver. Cell-site transmitted signal power is measured as received at the mobile unit. Transmitter power is adjusted at the mobile unit in an opposite manner with respect to increases and decreases in received signal power. A power control feedback scheme may also be utilized. At the cell-site communicating with the mobile unit, the mobile unit transmitted power is measured as received at the cell-site. A command signal is generated at the cell-site and transmitted to the mobile unit for further adjusting mobile unit transmitter power corresponding to deviations in the cell site received signal power. The feedback scheme is used to further adjust the mobile unit transmitter power so that mobile unit transmitted signals arrive at the cell-site at a desired power level. In a cell diversity situation, the mobile units transmitter power is adjusted to prevent unnecessary increases in mobile unit transmitter power level.

    摘要翻译： 一种用于蜂窝移动电话系统的功率控制系统，其中系统用户通过使用码分多址扩频通信信号的至少一个小区站点在彼此之间传送信息信号。 功率控制系统控制蜂窝移动电话系统中的每个蜂窝移动电话的传输信号功率，其中每个蜂窝移动电话具有天线，发射机和接收机，并且每个小区站点也具有天线，发射机和接收机。 在移动单元处测量接收到的站点发送信号功率。 相对于接收信号功率的增加和减少，发射机功率在移动单元处以相反的方式被调整。 还可以使用功率控制反馈方案。 在与移动单元通信的小区站点处，移动单元发送的功率在小区站点被接收到。 在小区站点生成指令信号，发送给移动单元，进一步调整与单元现场接收信号功率的偏差对应的移动单元发射机功率。 反馈方案用于进一步调整移动单元发射机功率，使得移动单元发送的信号以期望的功率电平到达小区站点。 在小区分集情况下，调整移动单元发射机功率以防止移动单元发射机功率电平的不必要的增加。

    Timing measurement for checking probes
    88.
    发明授权
    Timing measurement for checking probes 有权
    检测探针的定时测量

    公开(公告)号：US08107554B2

    公开(公告)日：2012-01-31

    申请号：US12087727

    申请日：2007-01-16

    申请人： Andrea Ferrari ,  Roberto Padovani

    发明人： Andrea Ferrari ,  Roberto Padovani

    IPC分类号： H04L27/00

    CPC分类号： H04L27/00

    摘要： A system and a method for the transmission of signals representative of an event include a first low frequency clock and a low frequency counter for generating a first delay, and a second high frequency clock and a high frequency counter for generating a second delay. The system further includes a transmitter for transmitting the representative signals after a delay from the event made up by the sum of the first and the second delay. The second delay can be generated also by an analog device including for example a capacitor, and devices for charging the capacitor up to the reaching of a preset voltage at its ends. A wireless transmission system according to the invention is utilized in a checking system with a contact detecting probe, for transmitting a signal representative of contact with the piece to be checked.

    摘要翻译： 用于传输代表事件的信号的系统和方法包括用于产生第一延迟的第一低频时钟和低频计数器，以及用于产生第二延迟的第二高频时钟和高频计数器。 该系统还包括一个发射机，用于在从由第一和第二延迟的和组成的事件的延迟之后发送代表信号。 第二延迟也可以由包括例如电容器的模拟装置和用于对电容器充电直到在其端部达到预设电压的装置来产生。 根据本发明的无线传输系统被用在具有接触检测探针的检查系统中，用于发送代表与被检查件接触的信号。