Method and device for receiving radio signal
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Abstract
In a wireless signal receiving method in which after a physical channel sent from a base station in a wireless communication system at an unspecified timing is demodulated from a high frequency signal to a baseband signal, the baseband signal is decoded and is outputted as a decoded baseband signal, and a desired channel included in the decoded baseband signal is decrypted by a communication control part (13) for performing communication control, this invention is the wireless communication receiving method being characterized by comprising a judgment step of judging whether or not the desired channel exists in the physical channel of the decoded baseband signal and outputting a judgment result, a wake-up step of bringing a power source of the communication control part (13) into an ON state in a case where the judgment result indicates existence of the desired channel, and a sleep step of bringing the power source of the communication control part into an OFF state when it is confirmed that the communication control part does not need to be operated in a case where the power source of the communication control part (13) is in the ON state, and thus electric power consumed by a mobile station can be saved.
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Citations
28 Claims
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1-14. -14. (canceled)
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15. A wireless signal receiving method in which after a physical channel sent from a base station in a wireless communication system at an unspecified timing is demodulated from a high frequency signal to a baseband signal, the baseband signal is decoded and is output as a decoded baseband signal, and
a desired channel included in the decoded baseband signal is decrypted by a communication control part for performing communication control, the wireless communication receiving method comprising: -
judging whether or not the desired channel exists in the physical channel of the decoded baseband signal and outputting a judgment result;
waking-up of bringing a power source of the communication control part into an ON state in a case in which the judgment result indicates existence of the desired channel; and
sleeping of bringing the power source of the communication control part into an OFF state when it is confirmed that the communication control part does not need to be operated in a case in which the power source of the communication control part is in the ON state. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A wireless signal receiving apparatus in a wireless signal receiving method in which after a physical channel sent from a base station in a wireless communication system at an unspecified timing is demodulated from a high frequency signal to a baseband signal, the baseband signal is decoded and is output as a decoded baseband signal, and
a desired channel included in the decoded baseband signal is decrypted by a communication control part for performing communication control, the apparatus comprising: -
means for judging whether or not a signal of the desired channel exists in the physical channel of the decoded baseband signal and outputting a judgment result;
means for bringing a power source of the communication control part into an ON state in a case in which the judgment result indicates existence of the desired channel; and
means for bringing the power source of the communication control part into an OFF state when it is confirmed that the communication control part does not need to be operated in a case in which the power source of the communication control part is in the ON state.
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Specification