Station Operation Method and Apparatus in TV Whitespace
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Abstract
The present invention relates to a station (hereinafter, ‘STA’) operation method and apparatus in a TV whitespace. In a TVWS band, when an STA operating as an unlicensed device with permission to operate in an available channel not used by a licensed device needs to operate in the TVWS band by acquiring information on the available channel, the STA transmits an available channel information request message to a device having database information; receives, from the device having database information, an ACK message for the available channel information that includes (a) identification information on an available channel, (b) information on the maximum allowable power level in the available channel, and (c) information on valid time of the available channel; and transmits/receives a signal using the information of (a), (b) and (c), i.e., using the maximum allowable power level within the valid time in the available channel.
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Citations
34 Claims
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1-22. -22. (canceled)
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23. A method for channel switch in a wireless communication system, the method comprising:
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receiving, at a second station from a first station, a channel switch request frame comprising target channel information and transmit power control information for the target channel; transmitting, from the second station to the first station, a channel switch response frame; and transmitting, from the second station to the first station, a signal on the target channel, wherein parameters in the transmit power control information are used for transmit power control calculation of the second station for the target channel. - View Dependent Claims (24, 25, 26, 27, 28)
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29. A station supporting channel switch in a wireless communication system, the station comprising:
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a transceiver configured to; receive, at the station from another station, a channel switch request frame comprising target channel information and transmit power control information for the target channel; and transmit, from the station to the another station, a channel switch response frame; and a processor configured to control the transceiver to perform transmitting a signal on the target channel, wherein parameters in the transmit power control information are used for transmit power control calculation of the second station for the target channel. - View Dependent Claims (30, 31, 32, 33, 34)
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Specification