利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

129 条记录 (耗时 0.024 秒)

    CDMA transmission apparatus
    1.
    发明授权
    CDMA transmission apparatus 有权
    CDMA发送装置

    公开(公告)号：US06661783B1

    公开(公告)日：2003-12-09

    申请号：US09264856

    申请日：1999-03-09

    申请人： Masatoshi Watanabe ,  Masaki Hayashi ,  Osamu Kato

    发明人： Masatoshi Watanabe ,  Masaki Hayashi ,  Osamu Kato

    IPC分类号： H04J1300

    CPC分类号： H04W52/267 ,  H04J13/0048 ,  H04J13/12

    摘要： During asymmetric communications using only the uplink, frame configuration section 109 transmits a signal made up of only pilot signals and transmission power control bits assembled into frames. The transmission power control method is the same as that for normal communications. In this case, since signals transmitted on the downlink are only pilot signals and transmission power control bits, it is possible to reduce the transmission rate considerably and transmit signals with its transmission power reduced by transmission signal amplitude control section 111. In this case, a long hierarchic orthogonal type spreading code is set as the spreading code used by spreader 110.

    摘要翻译： 在仅使用上行链路的非对称通信期间，帧配置部分109发送仅由导频信号组成的信号和组合成帧的发送功率控制比特。 发送功率控制方法与通常通信方式相同。 在这种情况下，由于在下行链路上发送的信号仅仅是导频信号和发送功率控制比特，所以可以显着地降低传输速率，并且以传输功率减小发送信号幅度控制部分111的方式发送信号。在这种情况下， 长分层正交类型扩展码被设置为扩展器110使用的扩展码。

    Mobile radio apparatus
    3.
    发明授权
    Mobile radio apparatus 失效
    移动无线电设备

    公开(公告)号：US6047015A

    公开(公告)日：2000-04-04

    申请号：US546554

    申请日：1995-10-20

    申请人： Masatoshi Watanabe ,  Kazuyuki Miya ,  Osamu Kato

    发明人： Masatoshi Watanabe ,  Kazuyuki Miya ,  Osamu Kato

    IPC分类号： H04B1/692 ,  H04B1/709 ,  H04B7/26 ,  A61F2/06 ,  H04L27/30

    CPC分类号： H04B1/709 ,  H04B1/692 ,  H04B7/2628

    摘要： A mobile radio apparatus includes a base station and a mobile station which communicate with each other by a hybrid code division multiple access scheme. The base station selects a hopping pattern in a frequency hopping method so as to completely avoid overlapping of a carrier for a forward link signal with a carrier for a reverse link signal at the same time, and transmits the forward link signal in a predetermined frequency band. The mobile station similarly transmits the reverse link signal. The mobile station has a multiplier for multiplying the forward link signal by a carrier at the same frequency as the carrier for the forward link signal to derive a received signal, a communication channel correlator for detecting a correlation of the received signal to separate a communication channel signal, a received power level detector circuit for detecting a received power level of the communication channel signal, and a transmission power level control signal for controlling a transmission power level of the reverse link signal, when transmitted to the base station, based on the received power level of the communication channel signal, using a carrier at the same frequency as the carrier for the forward link signal when the received power level of the communication channel signal is detected.

    摘要翻译： 移动无线电设备包括通过混合码分多址方案相互通信的基站和移动台。 基站以跳频方式选择跳频图案，以便完全避免前向链路信号的载波与用于反向链路信号的载波同时重叠，并且将预定频带中的前向链路信号 。 移动站类似地发送反向链路信号。 移动站具有乘法器，用于将前向链路信号乘以与用于前向链路信号的载波相同频率的载波以导出接收信号;通信信道相关器，用于检测接收信号的相关性以分离通信信道 信号，用于检测通信信道信号的接收功率电平的接收功率电平检测器电路，以及发送功率电平控制信号，用于当基于接收到的信号发送到基站时控制反向链路信号的发送功率电平 当检测到通信信道信号的接收功率电平时，使用与前向链路信号的载波相同频率的载波的通信信道信号的功率电平。

    Wireless mobile system
    4.
    发明授权
    Wireless mobile system 失效
    无线移动系统

    公开(公告)号：US5802110A

    公开(公告)日：1998-09-01

    申请号：US385961

    申请日：1995-02-09

    申请人： Masatoshi Watanabe ,  Kazuyuki Miya ,  Osamu Kato

    发明人： Masatoshi Watanabe ,  Kazuyuki Miya ,  Osamu Kato

    IPC分类号： H04B7/005 ,  H04L5/14 ,  H04L27/00 ,  H04K1/00

    CPC分类号： H04L5/1492 ,  H04W52/04

    摘要： A base station transmits a first signal spread according to a direct spread scheme and having carrier frequencies hopped between two frequencies f1 and f2. In a mobile station, output signals of two carrier generators are changed over by a change-over switch. When the signal transmission frequency in the base station is f1, the mobile station receives the first signal having the frequency f1 and transmits a second signal having the frequency f2. When the signal transmission frequency in the base station is f2, the mobile station receives the first signal having the frequency f2 and transmits the second signal having the frequency f1. A received power level detector in the mobile station detects a power level of the first signal received during each hop (the duration of the same frequency), and, on the basis of the detected power level, a transmission power level control circuit controls the power level of the second signal to be transmitted during the next hop, that is, at the time of transmission of the second signal having the same carrier frequency as that of the first signal whose power level has been detected.

    摘要翻译： 基站发送根据直接扩展方案扩展的第一信号，并且具有在两个频率f1和f2之间跳过的载波频率。 在移动站中，两个载波发生器的输出信号由切换开关切换。 当基站中的信号发送频率为f1时，移动站接收具有频率f1的第一信号，并发送具有频率f2的第二信号。 当基站的信号发送频率为f2时，移动站接收具有频率f2的第一信号，并发送具有频率f1的第二信号。 移动站中的接收功率电平检测器检测在每一跳期间接收到的第一信号（相同频率的持续时间）的功率电平，并且基于检测到的功率电平，发送功率电平控制电路控制功率 在下一跳期间要发送的第二信号的电平，即在与检测到功率电平的第一信号具有相同载波频率的第二信号的发送时。

    Radio communication apparatus and method
    5.
    发明授权
    Radio communication apparatus and method 失效
    无线通信装置及方法

    公开(公告)号：US06778520B2

    公开(公告)日：2004-08-17

    申请号：US09805508

    申请日：2001-03-14

    申请人： Eiji Katsura ,  Masatoshi Watanabe ,  Osamu Kato

    发明人： Eiji Katsura ,  Masatoshi Watanabe ,  Osamu Kato

    IPC分类号： H04B7216

    CPC分类号： H04W36/30 ,  H04B7/2618 ,  H04W36/18

    摘要： A radio communication apparatus and system in a CDMA/TDD system includes a mobile station that detects received power of data received from a surrounding base station at a received power detecting circuit in switching a base station for communication while moving. When received power from a base station other than a main base station in current communication becomes higher than a predetermined level, the mobile station makes the base station a sub base station to transmit the same data as the main base station, and receives data from the main base station and the sub base station concurrently at a pair of correlators. After that, when the received power from the sub base station becomes higher than the received power from the main base station, the mobile station switches a main base station and a sub base station and transmits data to a new main base station.

    摘要翻译： CDMA / TDD系统中的无线通信装置和系统包括：移动站，用于在移动时检测在接收功率检测电路中切换基站进行通信的周围基站接收的数据的接收功率。 当来自当前通信以外的主基站的基站的接收功率变得高于预定电平时，移动台使基站成为子基站发送与主基站相同的数据，并从 主基站和子基站同时在一对相关器。 此后，当来自子基站的接收功率变得高于来自主基站的接收功率时，移动台切换主基站和子基站，并向新的主基站发送数据。

    Radio communication system and method therefor
    6.
    发明授权
    Radio communication system and method therefor 失效
    无线电通信系统及其方法

    公开(公告)号：US06665287B1

    公开(公告)日：2003-12-16

    申请号：US09284956

    申请日：1999-05-04

    申请人： Eiji Katsura ,  Masatoshi Watanabe ,  Osamu Kato

    发明人： Eiji Katsura ,  Masatoshi Watanabe ,  Osamu Kato

    IPC分类号： H04B7216

    CPC分类号： H04W36/30 ,  H04B7/2618 ,  H04W36/18

    摘要： The present invention relates to a radio communication apparatus and system in a CDCA/TDD system in which a mobile station detects received power of data received from a surrounding base station at a received power detecting circuit in switching a base station for communication as moving. When received power from a base station other than a main base station in current communication becomes higher than a predetermined level, the mobile station makes the base station a sub base station to transmit the same data as the main base station, and receives data from the main base station and the sub base station concurrently at a pair of correlators. After that, when the received power from the sub base station becomes higher than the received power from the main base station, the mobile station switches a main base station and a sub bass station and transmits data to a new main base station.

    摘要翻译： 本发明涉及一种CDCA / TDD系统中的无线电通信装置和系统，其中移动站在接收功率检测电路中检测从周围基站接收的数据的接收功率，从而将基站进行通信作为移动。 当来自当前通信以外的主基站的基站的接收功率变得高于预定电平时，移动台使基站成为子基站发送与主基站相同的数据，并从 主基站和子基站同时在一对相关器。 此后，当来自子基站的接收功率变得高于来自主基站的接收功率时，移动台切换主基站和次低音站，并向新的主基站发送数据。

    CDMA cellular radio transmission system
    8.
    发明授权
    CDMA cellular radio transmission system 有权
    CDMA蜂窝无线电传输系统

    公开(公告)号：US06480479B1

    公开(公告)日：2002-11-12

    申请号：US09676507

    申请日：2000-10-02

    申请人： Kazuyuki Miya ,  Masatoshi Watanabe ,  Osamu Kato

    发明人： Kazuyuki Miya ,  Masatoshi Watanabe ,  Osamu Kato

    IPC分类号： H04B7216

    CPC分类号： H04W52/32 ,  H04B1/707 ,  H04B1/7097 ,  H04B7/2637 ,  H04B2201/70701

    摘要： A base station transmits, in addition to a pilot channel, signals which are multiplexed with pilot symbols inserted in the respective signals in communication channels. As the transmission of the pilot channel as a reference signal for coherent detection is unnecessary with high power so as to attain high reliability, the pilot channel can be transmitted with low power by means of weight in comparison with the communication channel, so that interference with the communication channel of any other station is reduced. Moreover, accurate coherent detection can be made from the pilot symbol inserted in the communication channel on the mobile station side.

    摘要翻译： 除了导频信道之外，基站还发送与在通信信道中的各个信号中插入的导频符号多路复用的信号。 由于作为用于相干检测的参考信号的导频信道的传输不需要高功率以便获得高可靠性，所以与通信信道相比，可以通过权重以低功率​​发送导频信道，从而干扰 任何其他站的通信信道减少。 此外，可以从插入在移动台侧的通信信道中的导频符号进行准确的相干检测。

    CDMA cellular radio transmission system
    10.
    发明授权
    CDMA cellular radio transmission system 有权

    公开(公告)号：US06400700B1

    公开(公告)日：2002-06-04

    申请号：US09457785

    申请日：1999-12-09

    申请人： Kazuyuki Miya ,  Masatoshi Watanabe ,  Osamu Kato

    发明人： Kazuyuki Miya ,  Masatoshi Watanabe ,  Osamu Kato

    IPC分类号： H04B7216

    CPC分类号： H04W52/32 ,  H04B1/707 ,  H04B1/7097 ,  H04B7/2637 ,  H04B2201/70701

    摘要： A base station transmits, in addition to a pilot channel, signals which are multiplexed with pilot symbols inserted in the respective signals in communication channels. As the transmission of the pilot channel as a reference signal for coherent detection is unnecessary with high power so as to attain high reliability, the pilot channel can be transmitted with low power by means of weight in comparison with the communication channel, so that interference with the communication channel of any other station is reduced. Moreover, accurate coherent detection can be made from the pilot symbol inserted in the communication channel on the mobile station side.