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    • 48. 发明授权
    • Wireless communication method and apparatus
    • 无线通信方法及装置
    • US09143247B2
    • 2015-09-22
    • US13479317
    • 2012-05-24
    • Takeshi Ichikawa
    • Takeshi Ichikawa
    • H04B17/00H04B17/26H04B17/23H04W24/10
    • H04B17/26H04B17/23H04W24/10
    • A wireless communication method and apparatus that produce only a small amount of transmission delay even when carrier sensing is performed. Intensity indication data indicating the radio wave intensity of a received wireless signal is generated. The intensity indication data is intermittently captured and retained. An average of the retained intensity indication data is calculated. If the average is less than or equal to a threshold, a wireless transmission operation is enabled. The average is calculated with a frequency according to the frequency of capturing of the intensity indication data. The average and the threshold are compared at a frequency corresponding to the frequency of calculation of the average.
    • 即使在执行载波检测时也仅产生少量传输延迟的无线通信方法和装置。 产生指示所接收的无线信号的无线电波强度的强度指示数据。 间歇地捕获并保留强度指示数据。 计算保留强度指示数据的平均值。 如果平均值小于或等于阈值,则启用无线传输操作。 平均值根据强度指示数据的拍摄频率以频率计算。 在与平均值的计算频率对应的频率下对平均值和阈值进行比较。
    • 49. 发明授权
    • Radio LSI device and interfering wave detecting circuit
    • 无线电LSI装置和干扰波检测电路
    • US08538336B2
    • 2013-09-17
    • US12619705
    • 2009-11-17
    • Takeshi Ichikawa
    • Takeshi Ichikawa
    • H04B1/00H04B1/38H03K9/00
    • H04N5/4403H04B1/1027H04B1/202H04N21/42207H04N21/42221H04N2005/4407H04N2005/4426
    • A radio LSI device includes an interfering wave detecting circuit that receives an RSSI signal for a current transmit/receive channel. The interfering wave detecting circuit includes a field intensity determiner that determines whether or not the value of the RSSI signal is greater than a predetermined threshold value. The interfering wave detecting circuit also includes a duration counter that counts the duration of an interfering wave whose RSSI value is greater than the predetermined threshold value. The interfering wave detecting circuit also includes a duration comparator that, if the duration exceeds a duration comparative value, generates an interrupt signal. The radio LSI device changes the setting of the current transmit/receive channel in response to the interrupt signal.
    • 无线电LSI装置包括干扰波检测电路,其接收当前发送/接收信道的RSSI信号。 干扰波检测电路包括确定RSSI信号的值是否大于预定阈值的场强确定器。 干扰波检测电路还包括对RSSI值大于预定阈值的干扰波的持续时间进行计数的持续时间计数器。 干扰波检测电路还包括持续时间比较器,如果持续时间超过持续时间比较值,则产生中断信号。 无线电LSI装置响应于中断信号改变当前发送/接收信道的设置。