Method and apparatus for protecting a primary service in WLAN system
First Claim
1. A method for a first station to obtain a White Space Map (WSM) from a second station, the method comprising:
- 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.
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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.
111 Citations
13 Claims
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1. 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 (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. 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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12. 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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13. 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