利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

710 条记录 (耗时 0.027 秒)

    ROAMING MOBILE COMMUNICATION SYSTEM AND ITS METHOD
    21.
    发明授权
    ROAMING MOBILE COMMUNICATION SYSTEM AND ITS METHOD 失效
    大面积的移动通信系统及其方法

    公开(公告)号：EP0750436B1

    公开(公告)日：2004-05-06

    申请号：EP95942312.0

    申请日：1995-12-28

    申请人： NTT MOBILE COMMUNICATIONS NETWORK INC.

    发明人： UCHIYAMA, Yasuyuki ,  NAKAMURA, Hiroshi

    IPC分类号： H04Q7/22 ,  H04Q7/38 ,  H04B7/26

    CPC分类号： H04W8/12 ,  H04W8/06 ,  H04W92/02

    摘要： A roaming mobile communication system in which a roaming incoming call to a moving subscriber can be connected to a mobile communication network adopting a different roaming number assigning system. In order to connect an incoming call to a moving subscriber, the mobile communication system connects a first mobile communication network to a second mobile communication network through an interwork location register. The first mobile communication network is the network to which the in-area location register of the in-area network, where the moving subscriber exists when the incoming call is connected to the moving subscriber, allocates temporarily a roaming number. The second mobile communication network is the network to which the gate location register of the in-area network, where the moving subscriber exists when the location of the moving subscriber is registered, allocates temporarily a roaming number. The interwork location register is used for registering the location of the moving subscriber who is roaming and for allocating the roaming number when the incoming call is connected.

    Calibration for an adaptive array antenna
    23.
    发明公开
    Calibration for an adaptive array antenna 有权
    Kalibrierungfüreine adaptive Gruppenantenne

    公开(公告)号：EP1367670A1

    公开(公告)日：2003-12-03

    申请号：EP03019890.7

    申请日：1999-07-09

    申请人： NTT Mobile Communications Network Inc.

    发明人： Ryo, Yamaguchi, NTT Mobile Communicat.Network Inc.

    IPC分类号： H01Q3/26 ,  G01R29/10 ,  H01Q21/22 ,  H04B7/04

    CPC分类号： H04B7/0842 ,  H01Q3/2605 ,  H01Q3/2611 ,  H01Q3/2629 ,  H01Q3/2635 ,  H01Q3/267 ,  H04B7/04 ,  H04B17/20

    摘要： An adaptive array antenna comprising a plurality of array antennas including a plurality of antenna elements which are spaced at intervals at which a large correlation is exhibited, said array antennas being spaced at intervals at which the correlation is negligible, wherein diversity effects such as fading compensation are produced, interference waves coming from the same direction are eliminated, the gain is augmented by main beam tracking, and one or more calibration signal coupling parts and multi-beam synthesizing circuit are provided so as to remove individual variations in calibration signals and to perform highly reliable calibration.

    摘要翻译： 一种包括多个阵列天线的自适应阵列天线，包括多个天线元件，所述多个天线元件以展现大的相关性的间隔间隔开，所述阵列天线以相关可忽略的间隔隔开，其中分集效应如衰落补偿 产生来自相同方向的干扰波，通过主波束跟踪增加增益，并且提供一个或多个校准信号耦合部分和多波束合成电路，以便消除校准信号中的各个变化并执行 高度可靠的校准。

    Signal multiplexer
    29.
    发明公开
    Signal multiplexer 失效
    信号复用器

    公开(公告)号：EP1330063A1

    公开(公告)日：2003-07-23

    申请号：EP03008865.2

    申请日：1995-12-04

    申请人： NTT Mobile Communications Network, Inc.

    发明人： Narahashi, Shoichi ,  Kumagai, Ken ,  Nojima, Toshio ,  Tarusawa, Yoshiaki

    IPC分类号： H04L5/06

    CPC分类号： H04J1/06 ,  H03G3/30 ,  H03G3/3042 ,  H04J1/065 ,  H04J1/16 ,  H04J1/20 ,  H04L5/06 ,  H04L27/10 ,  H04L27/12 ,  H04L27/2621

    摘要： Disclosed is an FSK signal multiplexer which combines the output signals from n m-ary FSK modulating means (5 1 -5 n ) by power combining means (6), where n and m are both integers equal to or greater than 2. The n m-ary FSK modulating means (5 1 -5 n ) shift their output frequencies in accordance with the sign of the input signals thereto based upon a common reference frequency signal from reference frequency oscillating means (8). Variable phase shifter means (47 1 -47 n ) for shifting the phase of the modulated signal from each m-ary FSK modulating means (5 1 -5 n ) and control means (48) are provided for setting the phase shift amount of the variable phase shifter means (47 1 -47 n ) so that the peak envelope power of the output from the power combining means (6) becomes small in accordance with the combination of symbols of the n input signals in synchronization with the timing at which the m-ary FSK modulating means switch their output frequencies in accordance with the input signals thereto.

    摘要翻译： 公开了一种FSK信号多路复用器，其通过功率组合装置（6）组合来自n m个FSK调制装置（51-5n）的输出信号，其中n和m都是等于或大于2的整数。n m- 基于来自参考频率振荡装置（8）的公共参考频率信号，FSF调制装置（51-5n）根据其输入信号的符号来移位它们的输出频率。 提供用于移位来自每个多模FSK调制装置（51-5n）和控制装置（48）的调制信号的相位的可变移相器装置（471-47n），用于设定可变移相器装置 （471-47n），使得来自功率组合装置（6）的输出的峰值包络功率根据n个输入信号的符号的组合而变小，与M-ark FSK调制装置 根据输入信号切换输出频率。