Analyzing wireless signal propagation
First Claim
1. A spectrum analysis method comprising:
- obtaining, at computer system, a simulated spatial distribution of spectral power for a geographic region, the simulated spatial distribution based on a simulation of wireless signal propagation in the geographic region;
obtaining, at the computer system, a measured spatial distribution of spectral power for the geographic region, the measured spatial distribution based on measurements by wireless sensor devices in the geographic region, each wireless sensor device configured to provide a local spectral power measurement based on wireless signals detected by the wireless sensor device;
comparing, by operation of the computer system, the simulated spatial distribution with the measured spatial distribution; and
modifying the simulated spatial distribution based on the comparison, wherein modifying the simulated spatial distribution comprises;
identifying, for a plurality of locations in the geographic region, differences between the simulated spatial distribution and the measured spatial distribution;
generating an error mesh for the geographic region by spatially interpolating the differences for the plurality of locations; and
modifying the simulated spatial distribution based on the error mesh.
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Accused Products
Abstract
In some aspects, a wireless-spectrum analysis technique includes obtaining, at a computer system, a simulated spatial distribution of a wireless signal parameter (e.g., spectral power). The simulated spatial distribution is based on a computer-simulation of wireless signal propagation in a geographic region. A measured spatial distribution of the wireless signal parameter is obtained at the computer system. The measured spatial distribution is based on measurements performed by wireless sensor devices in the geographic region. Each of the wireless sensor devices is configured to provide local parameter measurements based on wireless signals detected by the wireless sensor device. The simulated spatial distribution is compared with the measured spatial distribution. In some instances, the simulated spatial distribution geographic region is modified based on the comparison.
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Citations
20 Claims
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1. A spectrum analysis method comprising:
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obtaining, at computer system, a simulated spatial distribution of spectral power for a geographic region, the simulated spatial distribution based on a simulation of wireless signal propagation in the geographic region; obtaining, at the computer system, a measured spatial distribution of spectral power for the geographic region, the measured spatial distribution based on measurements by wireless sensor devices in the geographic region, each wireless sensor device configured to provide a local spectral power measurement based on wireless signals detected by the wireless sensor device; comparing, by operation of the computer system, the simulated spatial distribution with the measured spatial distribution; and modifying the simulated spatial distribution based on the comparison, wherein modifying the simulated spatial distribution comprises; identifying, for a plurality of locations in the geographic region, differences between the simulated spatial distribution and the measured spatial distribution; generating an error mesh for the geographic region by spatially interpolating the differences for the plurality of locations; and modifying the simulated spatial distribution based on the error mesh. - View Dependent Claims (2, 3, 4, 5, 6, 8, 9)
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7. A spectrum analysis method comprising:
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obtaining, at computer system, a simulated spatial distribution of spectral power for a geographic region, the simulated spatial distribution based on a simulation of wireless signal propagation in the geographic region; obtaining, at the computer system, a measured spatial distribution of spectral power for the geographic region, the measured spatial distribution based on measurements by wireless sensor devices in the geographic region, each wireless sensor device configured to provide a local spectral power measurement based on wireless signals detected by the wireless sensor device; comparing, by operation of the computer system, the simulated spatial distribution with the measured spatial distribution; modifying the simulated spatial distribution based on the comparison; obtaining updated measured spatial distributions of spectral power for the geographic region, the updated measured spatial distribution based on updated measurements by the wireless sensor devices; and dynamically modifying the simulated spatial distribution based on the updated measured spatial distributions.
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10. A spectrum analysis system comprising:
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a communication interface configured to receive local spectral power measurements for locations in a geographic region, the local spectral power measurements generated by wireless sensor devices based on wireless signals detected by the wireless sensor devices at the locations; and data-processing apparatus configured to perform operations comprising; obtaining a simulated spatial distribution of spectral power for a geographic region, the simulated spatial distribution based on a simulation of wireless signal propagation in the geographic region; obtaining a measured spatial distribution of spectral power for the geographic region, the measured spatial distribution based on the local spectral power measurements generated by the wireless sensor devices; comparing the simulated spatial distribution with the measured spatial distribution; and modifying the simulated spatial distribution based on the comparison, wherein modifying the simulated spatial distribution comprises; identifying, for a plurality of locations in the geographic region, differences between the simulated spatial distribution and the measured spatial distribution; generating an error mesh for the geographic region by spatially interpolating the differences for the plurality of locations; and modifying the simulated spatial distribution based on the error mesh. - View Dependent Claims (11, 12, 13, 14, 15, 17)
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16. A spectrum analysis system comprising:
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a communication interface configured to receive local spectral power measurements for locations in a geographic region, the local spectral power measurements generated by wireless sensor devices based on wireless signals detected by the wireless sensor devices at the locations; and data-processing apparatus configured to perform operations comprising; obtaining a simulated spatial distribution of spectral power for a geographic region, the simulated spatial distribution based on a simulation of wireless signal propagation in the geographic region; obtaining a measured spatial distribution of spectral power for the geographic region, the measured spatial distribution based on the local spectral power measurements generated by the wireless sensor devices; comparing the simulated spatial distribution with the measured spatial distribution; and modifying the simulated spatial distribution based on the comparison; obtaining updated measured spatial distributions of spectral power for the geographic region, the updated measured spatial distribution based on updated measurements by the wireless sensor devices; and dynamically modifying the simulated spatial distribution based on the updated measured spatial distributions.
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18. A wireless monitoring system comprising:
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means for generating local spectral power measurements for distinct locations over a geographic region based on wireless signals detected at the distinct locations; and a computing system configured to perform operations comprising; obtaining a simulated spatial distribution of spectral power for the geographic region, the simulated spatial distribution based on a simulation of wireless signal propagation in the geographic region; obtaining a measured spatial distribution of spectral power for the geographic region, the measured spatial distribution based on the local spectral power measurements; comparing the simulated spatial distribution with the measured spatial distribution; and modifying the simulated spatial distribution based on the comparison, wherein modifying the simulated spatial distribution comprises; identifying, for a plurality of locations in the geographic region, differences between the simulated spatial distribution and the measured spatial distribution; generating an error mesh for the geographic region by spatially interpolating the differences for the plurality of locations; and modifying the simulated spatial distribution based on the error mesh. - View Dependent Claims (19, 20)
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Specification