Relative location of a wireless node in a wireless network
First Claim
1. A computer-readable medium encoded with computer-executable instructions, the computer-executable instructions, when executed operable, to cause one or more processors to:
- compute a probability surface corresponding to the location probability of a wireless node within a physical region based on a received signal strength data associated with the wireless node and a Radio Frequency (RF) model of the physical region;
compute, based on the probability surface, an aggregate probability (Pin) of the wireless node being inside a perimeter defined with the physical region;
compute, based on the probability surface, an aggregate probability (Pout) of the wireless node being outside the perimeter; and
determine whether the wireless node is inside or outside the perimeter based on a comparison of Pout and Pin; and
output to a network access control node an indication of whether the wireless node has been determined to be inside or outside the perimeter.
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Accused Products
Abstract
In one embodiment, a method includes computing a probability surface corresponding to the location probability of the wireless node within a physical region based on the received signal strength data associated with a wireless node and an RF model of the physical region; computing, based on the probability surface, an aggregate probability (Pin) of the wireless node being inside a perimeter defined with the physical region; computing, based on the probability surface, an aggregate probability (Pout) of the wireless node being outside the perimeter; computing a probability ratio of the aggregate probabilities Pin to Pout; and determining whether the wireless node is inside or outside the perimeter based on a comparison of Pout and Pin.
91 Citations
27 Claims
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1. A computer-readable medium encoded with computer-executable instructions, the computer-executable instructions, when executed operable, to cause one or more processors to:
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compute a probability surface corresponding to the location probability of a wireless node within a physical region based on a received signal strength data associated with the wireless node and a Radio Frequency (RF) model of the physical region; compute, based on the probability surface, an aggregate probability (Pin) of the wireless node being inside a perimeter defined with the physical region; compute, based on the probability surface, an aggregate probability (Pout) of the wireless node being outside the perimeter; and determine whether the wireless node is inside or outside the perimeter based on a comparison of Pout and Pin; and output to a network access control node an indication of whether the wireless node has been determined to be inside or outside the perimeter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method comprising:
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computing, in a computing device, a probability surface corresponding to the location probability of a wireless node within a physical region based on the received signal strength data associated with the wireless node and a Radio Frequency (RF) model of the physical region; computing, based on the probability surface, an aggregate probability (Pin) of the wireless node being inside a perimeter defined with the physical region; computing, based on the probability surface, an aggregate probability (Pout) of the wireless node being outside the perimeter; and determining whether the wireless node is inside or outside the perimeter based on a comparison of Pout and Pin. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A system comprising:
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a location server operable to compute a probability surface corresponding to the location probability of a wireless node within a physical region based on the received signal strength data associated with the wireless node and a Radio Frequency (RF) model of the physical region;
compute, based on the probability surface, an aggregate probability (Pin) of the wireless node being inside a perimeter defined with the physical region;
compute, based on the probability surface, an aggregate probability (Pout) of the wireless node being outside the perimeter; and
determine whether the wireless node is inside or outside the perimeter based on a comparison of Pout and Pin; anda wireless access point operable to communicate with a wireless node. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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Specification