TV white space database assisted locationing for TV band devices
First Claim
1. A method for obtaining an available white space channel for wireless communication using a white space device, the method comprising:
- scanning for signals of a plurality of TV transmitters;
recording a TV transmitter designation and a received signal strength of a TV transmitter when the received signal strength is above a predetermined threshold;
sending TV data of at least three TV transmitters to an enhanced TV white space database, the TV data including recorded TV transmitter designations and received signal strengths for the at least three TV transmitters; and
receiving at least one available white space channel from the enhanced TV white space database based on geo-coordinates of the white space device, the geo-coordinates of the white space device being determined using the TV data, known geo-coordinates of the at least three TV transmitters, and known field-strength characteristics of the at least three TV transmitters.
1 Assignment
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Accused Products
Abstract
A method and system for obtaining an available white space channel for wireless communication using a white space device (WSD) are described. The WSD scans signals of TV transmitters, determines the received signal strength (RSSI) for those signals, and records TV data, including TV designations and corresponding RSSIs, for signals that exceed a predetermined threshold. The WSD sends TV data for at least three TV transmitters to an enhanced TV white space database (EnTVDB). The EnTVDB uses the TV data and information in its database to determine the geo-coordinates of the WSD. The EnTVDB uses the geo-coordinates of the WSD to identify available white space. The EnTVDB sends at least one channel of available white space to the white space device for its wireless communication.
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Citations
34 Claims
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1. A method for obtaining an available white space channel for wireless communication using a white space device, the method comprising:
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scanning for signals of a plurality of TV transmitters; recording a TV transmitter designation and a received signal strength of a TV transmitter when the received signal strength is above a predetermined threshold; sending TV data of at least three TV transmitters to an enhanced TV white space database, the TV data including recorded TV transmitter designations and received signal strengths for the at least three TV transmitters; and receiving at least one available white space channel from the enhanced TV white space database based on geo-coordinates of the white space device, the geo-coordinates of the white space device being determined using the TV data, known geo-coordinates of the at least three TV transmitters, and known field-strength characteristics of the at least three TV transmitters. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for providing available white space to a white space device, the method comprising:
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using a TV white space database, receiving a request for available white space from the white space device, the request including TV data for at least three TV transmitters, the TV data including TV transmitter designations and receive signal strength indicators for the at least three TV transmitters; determining geo-coordinates of the white space device using the TV data, known geo-coordinates of the at least three TV transmitters, and known field-strength characteristics of the at least three TV transmitters; and identifying at least one available white space channel using the geo-coordinates of the white space device. - View Dependent Claims (9, 10, 11, 12)
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13. A non-transitory, computer-readable medium storing computer-executable instructions for obtaining available white space, the instructions when executed by a processor cause the processor to execute a process comprising:
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scanning for signals of a plurality of TV transmitters; recording a TV transmitter designation and a received signal strength of a TV transmitter when the received signal strength is above a predetermined threshold; sending TV data of at least three TV transmitters to an enhanced TV white space database, the TV data including recorded TV transmitter designations and received signal strengths for the at least three TV transmitters; and receiving at least one available white space channel from the enhanced TV white space database based on geo-coordinates of a white space device, the geo-coordinates of the white space device being determined using the TV data, known geo-coordinates of the at least three TV transmitters, and known field-strength characteristics of the at least three TV transmitters. - View Dependent Claims (14, 15, 16, 17)
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18. A non-transitory, computer-readable medium storing computer-executable instructions for obtaining available white space, the instructions when executed by a processor cause the processor to execute a process comprising:
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using a TV white space database, receiving a request for available white space from a white space device, the request including TV data for at least three TV transmitters, the TV data including TV transmitter designations and receive signal strength indicators for the at least three TV transmitters; determining geo-coordinates of the white space device using the TV data, known geo-coordinates of the at least three TV transmitters, and known field-strength characteristics of the at least three TV transmitters; and identifying at least one available white space channel using the geo-coordinates of the white space device. - View Dependent Claims (19, 20)
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21. A method for determining geo-coordinates of a device, comprising:
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scanning for signals of a plurality of TV transmitters; recording a TV transmitter designation and a received signal strength of a TV transmitter when the received signal strength is above a predetermined threshold; sending TV data of at least three TV transmitters to an enhanced TV white space database, the TV data including recorded TV transmitter designations and received signal strengths for the at least three TV transmitters; and receiving the geo-coordinates of the device from the enhanced TV white space database, the geo-coordinates of the device being determined using the TV data, known geo-coordinates of the at least three TV transmitters, and known field-strength characteristics of the at least three TV transmitters.
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22. A white space device comprising:
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means for scanning for signals of a plurality of TV transmitters; means for recording a TV transmitter designation and a received signal strength of a TV transmitter when the received signal strength is above a predetermined threshold; means for sending TV data of at least three TV transmitters to an enhanced TV white space database, the TV data including recorded TV transmitter designations and received signal strengths for the at least three TV transmitters; and means for receiving at least one available white space channel from the enhanced TV white space database based on geo-coordinates of the white space device, the geo-coordinates of the white space device being determined using the TV data, known geo-coordinates of the at least three TV transmitters, and known field-strength characteristics of the at least three TV transmitters. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. An enhanced TV white space database comprising:
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means for receiving a request for available white space from a white space device, the request including TV data for at least three TV transmitters, the TV data including TV transmitter designations and receive signal strength indicators for the at least three TV transmitters; means for determining geo-coordinates of the white space device using the TV data, known geo-coordinates of the at least three TV transmitters, and known field-strength characteristics of the at least three TV transmitters; and means for identifying at least one available white space channel using the geo-coordinates of the white space device. - View Dependent Claims (33, 34)
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Specification