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    • 3. 发明申请
    • Wireless Base Station Which Operates In Degraded Mode In Mobile Communication System During Disaster, And Mobile Communication System
    • 无线基站,在灾害,移动通信系统中的移动通信系统中降级运行
    • US20090175224A1
    • 2009-07-09
    • US12409241
    • 2009-03-23
    • Mitsuhiro ONO
    • Mitsuhiro ONO
    • H04W88/08
    • H04W16/08H04W4/90H04W16/10H04W52/343H04W52/367H04W76/50
    • A mobile communication system prevents the reduction of large communication range even during disasters. A wireless base station includes a communication unit allocates frequency bands and output powers corresponding to distribution areas of wireless terminals, and performs communication with the wireless terminals. The communication unit uses a modulation method with a large number of multiple values to perform communication with wireless terminals in an area with small distribution area in proximity to the center of the cell area, and uses modulation methods with successively smaller numbers of values to perform communication with wireless terminals in larger distribution areas moving toward the peripheral regions of the cell area, and during a disaster, uses a modulation method with the smallest to perform communication over all distribution areas, sets the output power to the lowest value in communication with wireless terminals in an area with small distribution area in proximity to the center of the cell area, and sets the output power so as to increase gradually in communication with wireless terminals in larger distribution areas moving toward the peripheral regions of the cell area.
    • 移动通信系统即使在灾害期间也能够防止大的通信范围的减少。 无线基站包括通信单元,分配与无线终端的分配区域对应的频带和输出功率,并且与无线终端进行通信。 通信单元使用具有大量多个值的调制方法来在小区域中心附近的小分布区域的区域内与无线终端进行通信,并且使用连续较小数值的调制方法来进行通信 其中较大分布区域的无线终端朝向小区区域的周边区域移动,并且在灾害期间,使用最小的调制方法在所有分配区域上执行通信,将输出功率设置为与无线终端通信的最低值 在小区域的中心附近的分布区域较小的区域,并且设置输出功率,以便随着朝向小区区域的周边区域移动的较大分布区域中的无线终端的通信而逐渐增加。
    • 5. 发明申请
    • Mobile Communication System
    • 移动通信系统
    • US20090201801A1
    • 2009-08-13
    • US12427135
    • 2009-04-21
    • Mitsuhiro ONO
    • Mitsuhiro ONO
    • H04J3/14
    • H04B7/2606H04W24/04H04W88/08
    • To provide a method and an apparatus for achieving a cell redundancy. Base stations, to which different frequency bands are assigned, have active base-station transmitter-receivers with a predetermined number of wireless zones repeated. Some base stations also have standby base-station transmitter-receivers at the rate of one in every predetermined number of sites that have the predetermined number of wireless zones. Under a normal condition, the different frequency bands, which are obtained by dividing a predetermined frequency bandwidth by the predetermined number of the wireless zones, are established at the respective base stations in the respective wireless zones. Under a troublesome condition, different frequency bands, which are obtained by dividing the predetermined frequency bandwidth by the predetermined number of the wireless zones plus the predetermined number of the sites, are assigned to base stations in the respective wireless zones and to base stations that are positioned on the periphery of a wireless zone where the trouble has occurred and that have the standby base-station transmitter-receivers. Further, the output powers of the standby base-station transmitter-receivers of the base stations, which are positioned on the periphery of the wireless zone where the trouble has occurred, are adjusted such that the output powers are overlaid on the wireless zone where the trouble has occurred.
    • 提供一种用于实现单元冗余的方法和装置。 分配了不同频带的基站具有重复预定数量的无线区域的活动基站发射机 - 接收机。 一些基站还具有备用基站发射机 - 接收机,其速率为每预定数量的具有预定数量的无线区域的站点中的一个。 在正常条件下,通过将预定频率带宽除以预定数量的无线区域而获得的不同频带在相应无线区域中的各个基站处建立。 在麻烦的条件下,通过将预定频率带宽除以预定数量的无线区域加上预定数量的站点而获得的不同频带被分配给各个无线区域中的基站和 位于发生故障的无线区域的外围,并且具有备用基站发射机 - 接收机。 此外,调整位于发生故障的无线区域的周边的基站的备用基站发射机 - 接收机的输出功率,使得输出功率被覆盖在无线区域 发生了麻烦