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    • 91. 发明授权
    • Mobile radio communication system having radio zones of sector
configurations and antenna selecting method employed therein
    • 具有扇区配置的无线电区域和其中采用的天线选择方法的移动无线通信系统
    • US5491833A
    • 1996-02-13
    • US359898
    • 1994-12-20
    • Kojiro Hamabe
    • Kojiro Hamabe
    • H04B7/26H04W16/00H04W16/24H04W16/32H04W52/02H04W72/08H04Q7/00
    • H04W16/32H04W16/00H04W16/24H04W52/0212H04W72/08
    • A method of selecting sector antenna which is capable of reducing interference and improving the efficiency of utilization of frequencies is applied to a mobile radio communication system wherein a plurality of sector antennas whose half-power beam widths are different from basically used normal sector antennas are used so as to cover the same areas in an overlapping state. A radio base station located within a corresponding zone covers a plurality of sector cells using the sector antennas provided for each of the corresponding sector cells. Further, some of the radio base stations employ a way to cover partial area overlapping a normal sector cell with a narrow sector cell using a sector antenna whose half-power beam width is small. Each radio base station has a predetermined constant according to the half-power beam width. When a radio terminal requests a call origination, the corresponding radio base station selects an antenna whose sum of a received level of a signal sent from the radio terminal and the constant is largest among the assignable sector antennas.
    • 使用能够减少干扰并提高频率利用效率的扇区天线的方法被应用于移动无线电通信系统,其中半功率波束宽度与基本使用的正常扇区天线不同的多个扇区天线被使用 以覆盖重叠状态的相同区域。 位于相应区域内的无线电基站使用为每个对应的扇区小区提供的扇区天线来覆盖多个扇区小区。 此外,一些无线电基站采用一种使用半功率波束宽度小的扇区天线来覆盖具有窄扇区小区的正常扇区小区的部分区域重叠的方式。 每个无线电基站根据半功率波束宽度具有预定的常数。 当无线电终端请求呼叫发起时,相应的无线电基站选择在可分配扇区天线中从无线电终端发送的信号的接收电平和常数之和最大的天线。
    • 92. 发明授权
    • Mobile telephony system
    • 移动电话系统
    • US5479595A
    • 1995-12-26
    • US714566
    • 1991-06-13
    • Per V. Israelsson
    • Per V. Israelsson
    • H04B10/00H04B10/22H04W16/00H04W88/10
    • H04W16/00H04B10/112H04W88/10
    • A mobile telephony system intended for use by outdoor subscribers, for instance in cars, while affording, at the same time, high traffic capacity and relatively disturbance-free speech transmission to subscribers located within a building, for instance an office building. Signal transmission between mobile stations (MS, MSI) and base stations (BS1, BSI) is effected with radio waves in a first part-system (7), for instance intended for telephony traffic via car telephones, and with light, at least in the area nearest the mobile stations (MSI), in a second part-system (6) intended, for instance, for an office building. Signal transmission with light can also be effected in areas that contain electronic apparatus which is sensitive to radio disturbances, for instance in hospitals and/or in areas in which strong radio disturbances capable of preventing mobile telephony transmission with radio waves occur. Certain mobile stations may be capable of being switched between signal transmission with radio waves and signal transmission with light, which enables these stations to be used in both part-systems (7, 6).
    • 一种旨在由户外用户(例如在汽车中)使用的移动电话系统,同时为建筑物内的用户(例如办公楼)提供高流量和相对无干扰的语音传输。 移动站(MS,MSI)和基站(BS1,BSI)之间的信号在第一部分系统(7)中用无线电波进行,例如用于经由汽车电话的电话业务,并且至少在 最接近移动台(MSI)的区域,例如用于办公楼的第二部分系统(6)中。 具有光的信号传输也可以在包含对无线电干扰敏感的电子设备的区域中实现,例如在医院和/或能够用无线电波阻止移动电话传输的强无线电干扰的区域中进行。 某些移动站可以能够在具有无线电波的信号传输和用光的信号传输之间切换,这使得这些站能够在两个系统(7,6)中使用。
    • 93. 发明授权
    • Method and apparatus for identifying a transmitter in a simulcast radio
communication system
    • 用于识别联播无线电通信系统中的发射机的方法和装置
    • US5423063A
    • 1995-06-06
    • US113577
    • 1993-08-27
    • Steven J. Goldberg
    • Steven J. Goldberg
    • H04B7/26H04W16/00
    • H04W16/00H04B7/2625
    • A method and apparatus identifies (810) communication cells (500) in a simulcast radio communication system (100) comprising the cells (500) and a portable communication unit (PCU) (108). Identification bit .patterns (602, 604, 606) are assigned (802) to the cells (500) in a manner such that when transmissions of the identification bit patterns are received simultaneously from cells (500) adjacent to one another, thereby producing a received interference bit pattern (708), identities of the cells (500) received can be resolved to a subset of the cells (500) by analysis of the received interference bit pattern (708), wherein the subset is inclusive of the cells (500) received.
    • 方法和装置在包括小区(500)和便携式通信单元(PCU)的同时广播的无线电通信系统(100)中识别(810)通信小区(500)。 识别位模式(602,604,606)以这样的方式被分配(802)到小区(500),使得当从彼此相邻的小区(500)同时接收到识别比特模式的传输时,从而产生 接收到的干扰位模式(708)中,所接收的小区(500)的标识可以通过分析所接收的干扰比特模式(708)来解析为小区(500)的子集,其中该子集包括小区(500) )收到。