METHOD AND APPARATUS FOR PROTECTING A PRIMARY SERVICE IN WLAN SYSTEM
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Abstract
A method and an apparatus for protecting a primary service as an unlicensed device in a regulatory domain where a licensed device and the unlicensed device are permitted to operate are disclosed. For protecting a primary service by a station as an unlicensed device in a regulatory domain where a licensed device and the unlicensed device are permitted to operate, the unlicensed device acquires a list of identified available channels for the operation of the unlicensed device and maximum allowed transmission powers of the identified available channels from a regulatory domain database system; generates a white space map (WSM) comprising the list of identified available channels and the maximum allowed transmission powers of the identified available channels; updates the WSM when the station acquires information that a primary service signal is detected on a specific channel which is indicated as available in the WSM; and transmits the updated WSM to another station such that the another station moves to another channel if the another station is operating on the specific channel.
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Citations
14 Claims
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1. (canceled)
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2. A method for a first station to obtain a White Space Map (WSM) from a second station, the method comprising:
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receiving, by the first station with a white space operation state of unenabled state, an enabling signal from the second station; receiving, by the first station from the second station, a response frame including the WSM; and performing, by the first station with the white space operation state of enabled state, a transmission only on an available channel indicated in the WSM, wherein, if the first station fails to retrieve an updated WSM within a predetermined time, the first station changes the white space operation state to unenabled state and stops transmitting. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for a second station to provide a White Space Map (WSM) with a first station, the method comprising:
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transmitting, by the second station to the first station with a white space operation state of unenabled state, an enabling signal; and transmitting, by the second station to the first station, a response frame including the WSM, wherein the first station with the white space operation state of enabled state performs a transmission only on an available channel indicated in the WSM, wherein, if the first station fails to retrieve an updated WSM within a predetermined time, the first station changes the white space operation state to unenabled state and stops transmitting.
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13. An apparatus of a first station to obtain a White Space Map (WSM) from a second station, the apparatus comprising:
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a transceiver; and a processor, wherein the processor is configured to control the transceiver to; receive, by the first station with a white space operation state of unenabled state, an enabling signal from the second station; receive, by the first station from the second station, a response frame including the WSM; and perform, by the first station with the white space operation state of enabled state, a transmission only on an available channel indicated in the WSM, and wherein, if the first station fails to retrieve an updated WSM within a predetermined time, the first station changes the white space operation state to unenabled state and stops transmitting.
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14. An apparatus of a second station to provide a White Space Map (WSM) with a first station, the apparatus comprising:
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a transceiver; and a processor, wherein the processor is configured to control the transceiver to; transmit, by the second station to the first station with a white space operation state of unenabled state, an enabling signal; and transmit, by the second station to the first station, a response frame including the WSM; wherein the first station with the white space operation state of enabled state performs a transmission only on an available channel indicated in the WSM, and wherein, if the first station fails to retrieve an updated WSM within a predetermined time, the first station changes the white space operation state to unenabled state and stops transmitting.
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Specification