Spectrum assignment for networks over white spaces and other portions of the spectrum
First Claim
1. A method performed using electronic processing functionality, the method comprising:
- investigating a plurality of spectrum units to identify a particular spectrum unit having a characteristic signal indicating presence of a channel;
performing a time domain analysis of the characteristic signal to identify a time interval in the characteristic signal that conveys at least a channel width of the channel, the time interval identified by the time domain analysis being proportional to the channel width; and
governing a communication among at least two nodes based at least on the channel width.
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Accused Products
Abstract
Functionality is described by selecting a channel in an environment in which non-privileged entities have subordinate access rights to spectrum compared to privileged entities. The functionality operates by identifying spectrum that is available to all nodes involved in communication (where the nodes are associated with non-privileged entities). The functionality then generates a suitability assessment for each candidate channel within the available spectrum. The functionality selects a channel having the most desirable suitability assessment. The functionality can form a suitability assessment for a candidate channel of arbitrary width, e.g., by combining suitability assessments associated with constituent spectrum units within the candidate channel.
116 Citations
21 Claims
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1. A method performed using electronic processing functionality, the method comprising:
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investigating a plurality of spectrum units to identify a particular spectrum unit having a characteristic signal indicating presence of a channel; performing a time domain analysis of the characteristic signal to identify a time interval in the characteristic signal that conveys at least a channel width of the channel, the time interval identified by the time domain analysis being proportional to the channel width; and governing a communication among at least two nodes based at least on the channel width. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method comprising:
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advancing to a next spectrum unit within an available spectrum; performing a time domain analysis to reveal whether the next spectrum unit includes a characteristic signal indicating that the next spectrum unit is at least part of a channel that is currently available to non-privileged entities, the characteristic signal including at least one time interval during which a signal amplitude exceeds a threshold; repeating the advancing and performing for additional next spectrum units until the channel is revealed by the time domain analysis; and deriving a bandwidth of the channel using the at least one time interval included in the characteristic signal or at least one other time interval included in the characteristic signal, the bandwidth being proportional to the duration of the at least one time interval or the at least one other time interval. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A communication device comprising:
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one or more processing devices; and one or more storage media storing instructions which, when executed by the one or more processing devices, cause the one or more processing devices to; using time domain analysis; investigate samples of at least one radio frequency spectrum unit to determine an amplitude of the samples; and identify a time interval from the samples when the amplitude exceeds or falls below a specified threshold; and determine an available channel width of a channel based at least on the duration of the time interval identified using the time domain analysis, the available channel width proportional to the duration of the time interval. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification