Logical floor determination for a wireless device using weighted AP received signal strengths
First Claim
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1. A wireless device locating apparatus, the apparatus comprising:
- a communication interface configured to receive signal strength values including a first set of signal strength values for an associated wireless device detected at a first plurality of radio receivers disposed in a first region and a second set of signal strength values for the associated wireless device detected at a second plurality of radio receivers disposed in a second region; and
,determination logic operatively connected with the communication interface and being configured to determine a region that the associated wireless device is located, the determination logic including;
a first weighting portion selectively weighting the signal strength values of the first set of signal strength values with at least two different weight values as a first set of weighted signal strength values, and selectively weighting the signal strength values of the second set of signal strength values with at least two different weight values as a second set of weighted signal strength values, wherein the second strongest signal strength values of the first and second set of signal strength values are weighted higher than other signal strength values of the first and second set of signal strength values;
a first summing portion summing the first set of weighted signal strength values as a first weighted sum, and summing the second set of weighted signal strength values as a second weighted sum; and
,an identifying portion identifying the region that the wireless device is located by a comparison of the first weighted sum with the second weighted sum.
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Abstract
An apparatus configured to acquire received signal strength intensities (RSSIs) for a wireless device from a plurality of access points (APs) located on a plurality logical floors. The apparatus is configured to determine which logical floor the wireless device is on by analyzing the RSSIs. The RSSIs for each floor are adjusted with an adjustment value and are selectively weighted with at least two different weight values, and the adjusted and weighted RSSIs for each floor are each summed. The floor with highest sum of adjusted or weighted RSSIs is determined to be the floor the wireless device is on.
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Citations
23 Claims
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1. A wireless device locating apparatus, the apparatus comprising:
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a communication interface configured to receive signal strength values including a first set of signal strength values for an associated wireless device detected at a first plurality of radio receivers disposed in a first region and a second set of signal strength values for the associated wireless device detected at a second plurality of radio receivers disposed in a second region; and
,determination logic operatively connected with the communication interface and being configured to determine a region that the associated wireless device is located, the determination logic including; a first weighting portion selectively weighting the signal strength values of the first set of signal strength values with at least two different weight values as a first set of weighted signal strength values, and selectively weighting the signal strength values of the second set of signal strength values with at least two different weight values as a second set of weighted signal strength values, wherein the second strongest signal strength values of the first and second set of signal strength values are weighted higher than other signal strength values of the first and second set of signal strength values; a first summing portion summing the first set of weighted signal strength values as a first weighted sum, and summing the second set of weighted signal strength values as a second weighted sum; and
,an identifying portion identifying the region that the wireless device is located by a comparison of the first weighted sum with the second weighted sum. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. Logic encoded in a non-transitory computer readable medium for execution, and when executed operable to:
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receive signal strength values including a first set of signal strength values for an associated wireless device detected at a first plurality of radio receivers disposed in a first region and a second set of signal strength values for the associated wireless device detected at a second plurality of radio receivers disposed in a second region; and
,determine a region that the associated wireless device is located by; selectively weighting the signal strength values of the first set of signal strength values with at least two different weight values as a first set of weighted signal strength values, and selectively weighting the signal strength values of the second set of signal strength values with at least two different weight values as a second set of weighted signal strength values; summing the first set of weighted signal strength values as a first weighted sum, and summing the second set of weighted signal strength values as a second weighted sum; and
,identifying the region that the wireless device is located by a comparison of the first weighted sum with the second weighted sum. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. Logic encoded in a non-transitory computer readable medium for execution, and when executed operable to:
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receive signal strength values including a first set of signal strength values for an associated wireless device detected at a first plurality of radio receivers disposed in a first region and a second set of signal strength values for the associated wireless device detected at a second plurality of radio receivers disposed in a second region; and
,determine a region that the associated wireless device is located by; comparing said first set of signal strength values with said second set of signal strength values; and based on a result of said comparing, identifying the region that the associated wireless device is located by one of a group consisting of a first manipulation of the first and second sets of signal strength values, and a second manipulation of the first and second sets of signal strength values different than the first manipulation, the first manipulation including a weighting of said first and second sets of signal strength values and the second manipulation including an adjusting of said first and second sets of signal strength values. - View Dependent Claims (20, 21, 22, 23)
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Specification