WIRELESS BASE STATION AND WIRELESS COMMUNICATION SYSTEM USING THE SAME
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Accused Products
Abstract
A wireless base station (1) includes a wakeup device (13) and a main device (14). When the main device (14) is in a sleep mode, the wakeup device (13) is connected to the antenna (11). Then, when the wakeup device (13) receives a wakeup signal for activating the wireless base station (1) from a terminal device assigned to the wireless base station (1) in a communication band used for wireless communication with the terminal device and when the information for identifying a wireless base station to be activated contained in the received wakeup signal is identical with the identification information of the wireless base station (1), the wakeup device (13) outputs a driving signal to the main device (14). The main device (14) transitions from the sleep mode to an operating mode in response to the driving signal from the wakeup device (13).
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Citations
16 Claims
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1-6. -6. (canceled)
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7. A wireless base station comprising:
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a main device regularly transmitting a management frame for managing a terminal device, having an operating mode in which the main device communicates wirelessly with the terminal device and a sleep mode in which the main device is not capable of communicating wirelessly with the terminal device, and transitioning from the operating mode to the sleep mode when it has not communicated wirelessly with the terminal device in a certain period of time or when no terminal device is assigned to the wireless base station; and a wakeup device configured, when the main device is in the sleep mode and when the wakeup device receives, from a first terminal device starting access to the main device, a wakeup signal for causing the main device to transition from the sleep mode to the operating mode, to cause the main device to transition from the sleep mode to the operating mode, wherein the wakeup device receives the wakeup signal from the first terminal device in the same frequency band as that used by the main device for wireless communication, the wakeup signal having been modulated by a modulation technique with a transmission rate lower than that for data transmission and reception by the main device in the operating mode, the wakeup signal containing information identifying a wireless base station to be activated by the first terminal device, and demodulates the received wakeup signal to cause the main device to transition from the sleep mode to the operating mode. - View Dependent Claims (9, 11, 13, 15)
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8. A wireless base station comprising:
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a main device regularly transmitting a management frame for managing a terminal device, having an operating mode in which the main device communicates wirelessly with the terminal device and a sleep mode in which the main device is not capable of communicating wirelessly with the terminal device, and transitioning from the operating mode to the sleep mode when it has not communicated wirelessly with the terminal device in a certain period of time or when no terminal device is assigned to the wireless base station; and a wakeup device configured, when the main device is in the sleep mode and when the wakeup device receives, from a first terminal device starting access to the main device, a wakeup signal for causing the main device to transition from the sleep mode to the operating mode, to cause the main device to transition from the sleep mode to the operating mode, wherein the wakeup device receives the wakeup signal from the first terminal device, the wakeup signal having a length that provides information for identifying a wireless base station to be activated by the first terminal device, and demodulates the received wakeup signal to cause the main device to transition from the sleep mode to the operating mode. - View Dependent Claims (10, 12, 14, 16)
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Specification