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    • 1. 发明授权
    • Cognitive radio system
    • 认知无线电系统
    • US07917110B2
    • 2011-03-29
    • US11790855
    • 2007-04-27
    • Tomoya HoriguchiHiroshi YoshidaTazuko TomiokaKatsuya NoninRen Sakata
    • Tomoya HoriguchiHiroshi YoshidaTazuko TomiokaKatsuya NoninRen Sakata
    • H04B1/18
    • H04W16/14H04W24/00H04W48/08H04W88/14
    • A cognitive radio system includes: a state detecting device that scans a frequency band allocated to another radio system than the cognitive radio system to detect a first use-state of the frequency band; a first server including a first gathering unit that receives first information relating to the first use-state and a second gathering unit; a second server that stores a second use-state of the frequency band allocated to the other radio system, the second server configured to provide second information relating to the second use-state to the second gathering unit; and a notifying unit that notifies a terminal device in the cognitive radio system of information of an available channel based on the first information and the second information.
    • 认知无线电系统包括:状态检测装置,其扫描分配给不同于认知无线电系统的另一无线电系统的频带,以检测频带的第一使用状态; 第一服务器,包括接收与第一使用状态有关的第一信息的第一收集单元和第二收集单元; 第二服务器,其存储分配给另一无线电系统的频带的第二使用状态,所述第二服务器被配置为向所述第二收集单元提供与所述第二使用状态有关的第二信息; 以及通知单元,其基于所述第一信息和所述第二信息,向所述认知无线系统中的终端设备通知可用信道的信息。
    • 2. 发明申请
    • Cognitive radio system
    • 认知无线电系统
    • US20070253394A1
    • 2007-11-01
    • US11790855
    • 2007-04-27
    • Tomoya HoriguchiHiroshi YoshidaTazuko TomiokaKatsuya NoninRen Sakata
    • Tomoya HoriguchiHiroshi YoshidaTazuko TomiokaKatsuya NoninRen Sakata
    • H04Q7/24
    • H04W16/14H04W24/00H04W48/08H04W88/14
    • A cognitive radio system includes: a state detecting device that scans a frequency band allocated to another radio system than the cognitive radio system to detect a first use-state of the frequency band; a first server including a first gathering unit that receives first information relating to the first use-state and a second gathering unit; a second server that stores a second use-state of the frequency band allocated to the other radio system, the second server configured to provide second information relating to the second use-state to the second gathering unit; and a notifying unit that notifies a terminal device in the cognitive radio system of information of an available channel based on the first information and the second information.
    • 认知无线电系统包括:状态检测装置,其扫描分配给不同于认知无线电系统的另一无线电系统的频带,以检测频带的第一使用状态; 第一服务器,包括接收与第一使用状态有关的第一信息的第一收集单元和第二收集单元; 第二服务器,其存储分配给另一无线电系统的频带的第二使用状态,所述第二服务器被配置为向所述第二收集单元提供与所述第二使用状态有关的第二信息; 以及通知单元,其基于所述第一信息和所述第二信息,向所述认知无线系统中的终端设备通知可用信道的信息。
    • 4. 发明授权
    • Radio receiver and radio receiving method
    • 无线电接收机和无线电接收方法
    • US07609793B2
    • 2009-10-27
    • US11356956
    • 2006-02-21
    • Tazuko TomiokaHiroshi YoshidaKatsuya NouninTomoya HoriguchiRen Sakata
    • Tazuko TomiokaHiroshi YoshidaKatsuya NouninTomoya HoriguchiRen Sakata
    • H04B7/10H04L1/02H04K1/10
    • H04B1/71637H04B7/0857H04L27/2647
    • According to an aspect of the present invention, there is provided with a radio receiver including: one or more antenna which receives radio signals; a plurality of filters which selectively output signals in respective reception bands from the radio signals received by the antenna, adjacent reception bands partially overlapping each other; a plurality of A/D converters disposed correspondingly to the filters to convert the signals output from the respective filters to digital signals; extracting units which extract signal components of a boundary radio signal spreading across at least two reception bands adjacent to each other from digital signals associated with the at least two reception bands adjacent to each other; a combining unit which combines the signal components extracted by the extracting units to restore the boundary radio signal; and a demodulation unit which demodulates the boundary radio signal restored by the combining unit.
    • 根据本发明的一个方面,提供了一种无线电接收机,包括:一个或多个接收无线电信号的天线; 多个滤波器,其从相应的接收频带中选择性地输出来自天线接收的无线电信号的信号,相邻的接收频带彼此重叠; 多个A / D转换器对应于滤波器设置,以将从各个滤波器输​​出的信号转换为数字信号; 提取单元,其从与彼此相邻的所述至少两个接收频带相关联的数字信号中提取跨越彼此相邻的至少两个接收频带扩展的边界无线电信号的信号分量; 组合单元,其组合由所述提取单元提取的信号分量以恢复所述边界无线电信号; 以及解调单元,其解调由所述组合单元恢复的边界无线电信号。
    • 9. 发明授权
    • Transmission system, transmission device, and clock synchronization method
    • 传输系统,传输设备和时钟同步方法
    • US08867681B2
    • 2014-10-21
    • US13248215
    • 2011-09-29
    • Hiroshi Yoshida
    • Hiroshi Yoshida
    • H04L7/00G06F1/12H04J3/06
    • G06F1/12H04J3/0685
    • A transmission system which couples a plurality of transmission devices to a control device includes a first transmission device which is one of the plurality of transmission devices; a first calculation circuit which calculates a first difference value indicating a frequency difference value between a common clock supplied from the control device and a first clock as a clock used in the first transmission device; and a transmitter which reports the first difference value to a second transmission device other than the first transmission device, wherein the second transmission device comprises: a second calculation circuit which calculates a second difference value indicating a frequency difference value between the common clock and a second clock used in the second transmission device, and a frequency controller which controls an oscillator generating the second clock so that the second difference value approaches the first difference value reported from the first transmission device.
    • 将多个传输设备耦合到控制设备的传输系统包括作为多个传输设备之一的第一传输设备; 第一计算电路,其计算指示从所述控制装置提供的公共时钟与所述第一时钟之间的频率差值作为所述第一发送装置中使用的时钟的第一差值; 以及向所述第一发送装置以外的第二发送装置报告所述第一差分值的发送机,其中,所述第二发送装置包括:第二计算电路,其计算表示所述公共时钟与第二发送装置之间的频率差值的第二差分值 在第二发送装置中使用的时钟,以及频率控制器,其控制产生第二时钟的振荡器,使得第二差值接近从第一发送装置报告的第一差值。