Method and system for dynamic spectrum access using detection periods
First Claim
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1. A system comprising:
- a plurality of dynamic spectrum access-enabled devices, each of the plurality of devices configured to refrain from transmitting during each of a first plurality of time periods;
a circuit configured to synchronize the first plurality of time periods among the plurality of devices; and
at least one of the plurality of devices comprising;
a sensor module to detect for spectrum use by a device not in the plurality of devices during the first time period, and to detect spectrum for use by a cooperative device during each of a second plurality of time periods, each of the second time periods not coinciding with any of the first plurality of time periods;
wherein the plurality of second time periods are scheduled to have random time intervals between adjacent periods.
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Abstract
Methods and systems for dynamic spectrum access (DSA) in a wireless network are provided. A DSA-enabled device may sense spectrum use in a region and, based on the detected spectrum use, select one or more communication channels for use. The devices also may detect one or more other DSA-enabled devices with which they can form DSA networks. A DSA network may monitor spectrum use by cooperative and non-cooperative devices, to dynamically select one or more channels to use for communication while avoiding or reducing interference with other devices.
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Citations
32 Claims
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1. A system comprising:
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a plurality of dynamic spectrum access-enabled devices, each of the plurality of devices configured to refrain from transmitting during each of a first plurality of time periods; a circuit configured to synchronize the first plurality of time periods among the plurality of devices; and at least one of the plurality of devices comprising; a sensor module to detect for spectrum use by a device not in the plurality of devices during the first time period, and to detect spectrum for use by a cooperative device during each of a second plurality of time periods, each of the second time periods not coinciding with any of the first plurality of time periods; wherein the plurality of second time periods are scheduled to have random time intervals between adjacent periods. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A dynamic spectrum access (DSA)-enabled device comprising:
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a first circuit configured to schedule a first plurality of time periods at regularly-spaced time intervals during which the device refrains from transmitting, each of the first plurality of time periods being synchronized among a plurality of other DSA-enabled devices; a second circuit to sense at least one channel to detect spectrum use by at least one cooperative DSA-enabled device on the at least one channel during each of a plurality of second time periods, each second time period not coinciding with any of the first plurality of time periods; and wherein the plurality of second time periods are scheduled to have random time intervals between adjacent periods. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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24. A method of coordinating communication among a plurality of devices, the method comprising:
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scheduling a first plurality of time periods at regularly-spaced time intervals during which each of the plurality of devices refrain from transmitting, each of the first time periods being synchronized among the plurality of devices; and during each of a plurality of second time periods, sensing at least one channel to detect spectrum use by at least one cooperative device on the at least one channel, each second time period not coinciding with any of the first plurality of time periods; wherein the plurality of second time periods are scheduled to have random time intervals between adjacent periods. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32)
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Specification