公开(公告)号：EP0118997A3

公开(公告)日：1985-05-22

申请号：EP84300735

申请日：1984-02-06

申请人： FUJITSU LIMITED

发明人： Noguchi, Yoshifumi ,  Endoh, Hiroyuki ,  Ono, Kouichi

IPC分类号： H04B07/155

CPC分类号： H04B7/15528 ,  H04B7/15 ,  H04B7/155

摘要： A direct relay equipment includes a first antenna (11), a second antenna (12), an up direction circuit (15-23) connected from the first antenna via a first circulator (13) to the second antenna via a second circulator (14), and a down direction circuit (25-33) connected from the second antenna via the second circulator to the first antenna via the first circulator. In the up direction circuit and the down direction circuit, a received signal having a frequency f, from the first (or second) antenna is amplified by a microwave amplifier (17,27), the output of the microwave amplifier is converted to a signal having a frequency f 2 (sending vrequency), the signal having a frequency f 2 is amplified by the same amplifier, and the amplifier signal having a frequency f 2 is sent out from the second (or first) antenna.

摘要翻译： 直接中继设备包括第一天线（11），第二天线（12），经由第一循环器（13）从第一天线经由第二循环器（14）连接到第二天线的上行方向电路（15-23） ）和通过第二循环器从第二天线经由第一循环器连接到第一天线的下行方向电路（25-33）。 在向上方向电路和下行方向电路中，具有来自第一（或第二）天线的频率f1的接收信号由微波放大器（17,27）放大，微波放大器的输出被转换为具有 频率f2（发送频率），具有频率f2的信号被同一放大器放大，具有频率f2的放大器信号从第二（或第一）天线发出。

公开(公告)号：EP0132406A3

公开(公告)日：1987-09-16

申请号：EP84305038

申请日：1984-07-24

申请人： NEC CORPORATION

发明人： Otsuka, Shigeru c/o NEC Corporation

IPC分类号： H04B07/155 ,  H04B01/16

CPC分类号： H04W52/0229 ,  H04B7/15 ,  H04B7/15528 ,  Y02D70/446

摘要： @ In a time-division multiple access (TDMA) communication network, a power saving system interleaves a power saving control signal at periodic intervals with a selection signal and information signals and transmits the interleaved signals from a master station to slave stations. A plurality of power cut-off circuits are associated respectively with the slave stations for individually cutting off power supplies to the slave stations for a predetermined period in response to the control signal. A detector is provided for detecting the moment a connection is being established, identifying the slave station establishing the connection and selectively inhibiting the power cut-off circuit associated with the identified station from responding to the control signal, while allowing the remainder of the power cut-off means to respond to the control signal.

公开(公告)号：EP0085940A3

公开(公告)日：1986-03-26

申请号：EP83100978

申请日：1983-02-02

申请人： NEC CORPORATION

发明人： Abe, Akira ,  Hashimoto, Hiromi ,  Takenaka, Toshiyuki ,  Taniguchi, Koyo

IPC分类号： H04B17/00 ,  H04B07/155 ,  H04B01/74

CPC分类号： H04B7/15542 ,  H04B1/74 ,  H04B17/0087

摘要： A service channel signal transmission system in which a service channel signal is constantly fed to at least two radio channels in parallel. Each intermediate repeater station has a service channel demodulator which is constantly connected to either one of the radio channels. A combining and switching circuit automatically switches over the service channel demodulator to the other radio channel in response to an alarm output which indicates an abnormality in a received signal at a receiver associated with the one radio channel. The service channel is completely switched from one to the other without resorting to line switchover control signals from terminal stations.

摘要翻译： 一种服务信道信号传输系统，其中服务信道信号被不断地馈送到并行的至少两个无线电信道。 每个中间中继站具有不断连接到无线电信道之一的服务信道解调器。 组合和切换电路响应于指示在与一个无线电信道相关联的接收机处的接收信号中的异常的报警输出，自动地将服务信道解调切换到另一无线电信道。 服务通道完全从一个切换到另一个，而不需要来自终端站的线路切换控制信号。

公开(公告)号：EP0104486A3

公开(公告)日：1985-07-17

申请号：EP83108587

申请日：1983-08-31

申请人： Siemens Aktiengesellschaft

发明人： Vogel, Klaus, Dipl.-Ing. ,  Panschar, Hans, Dipl.-Ing.

IPC分类号： H04B01/74 ,  H04B07/155

CPC分类号： H04B1/74

公开(公告)号：EP0104485A3

公开(公告)日：1985-07-17

申请号：EP83108585

申请日：1983-08-31

申请人： Siemens Aktiengesellschaft

发明人： Vogel, Klaus, Dipl.-Ing.

IPC分类号： H04B01/74 ,  H04B07/02 ,  H04B07/155

CPC分类号： H04B1/74

公开(公告)号：EP0085575A3

公开(公告)日：1984-10-03

申请号：EP83300513

申请日：1983-02-01

申请人： NEC CORPORATION

发明人： Ichihara, Masaki

IPC分类号： H04B07/155

CPC分类号： H04B7/155 ,  H04W52/0216 ,  H04W52/0229 ,  Y02D70/446

摘要： In a power supply system for use in a radio communication system comprising a base station for transmitting and receiving radio signals, one or more repeater stations for repeating the radio signals, and a terminal station communicating with the base station through the repeating stations, the base station comprises means for transmitting synchronizing signal pulses at a predetermined period for effecting a battery saving type power supply. Each of the repeater station and terminal station comprises means, responsive to successive reception of a predetermined number of the synchronising signal pulses, for effecting intermittent battery saving at a period substantially equal to the period of the synchronizing signal pulses during occurrence of the synchronizing signal pulses.