Secure localization for 802.11 networks with fine granularity
First Claim
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1. A method of localizing mobile client devices within a geographical area, comprising:
- a) having an Access Point Controller generate tokens and provide the tokens to a plurality of Access Points within a geographical area;
b) having the Access Points transmit said tokens for receipt by client devices within said geographical area;
c) having at least one client device within said geographical area inform the Access Point Controller of the tokens that it receives from the Access Points; and
d) having the Access Point Controller determine a Macro-Location of the client device based on the tokens received by the client device;
e) having the Access Point Controller generate new tokens for transmission to a plurality of computers distributed at least within the Macro-Location within said geographical area to wirelessly transmit to said client device;
f) having the client device inform the Access Point Controller of the new tokens that it receives from the computers distributed within said geographical area; and
g) having the Access Point Controller determine a Pico-Location of the client device based on the new tokens received by the client device.
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Abstract
A system and method that uses wireless-capable desktop computers in a vicinity such as to enable one to securely determine the location of an untrusted user with office level granularity.
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Citations
16 Claims
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1. A method of localizing mobile client devices within a geographical area, comprising:
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a) having an Access Point Controller generate tokens and provide the tokens to a plurality of Access Points within a geographical area; b) having the Access Points transmit said tokens for receipt by client devices within said geographical area; c) having at least one client device within said geographical area inform the Access Point Controller of the tokens that it receives from the Access Points; and d) having the Access Point Controller determine a Macro-Location of the client device based on the tokens received by the client device; e) having the Access Point Controller generate new tokens for transmission to a plurality of computers distributed at least within the Macro-Location within said geographical area to wirelessly transmit to said client device; f) having the client device inform the Access Point Controller of the new tokens that it receives from the computers distributed within said geographical area; and g) having the Access Point Controller determine a Pico-Location of the client device based on the new tokens received by the client device. - View Dependent Claims (2, 3, 4, 5)
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6. A method of localizing mobile client devices within a geographical area, comprising:
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a) having an Access Point Controller generate tokens for transmission within a geographical area; b) having computers within the geographical area configured as Pico Access Points transmit said tokens for receipt by client devices within said geographical area; c) having client devices inform the Access Point Controller of the tokens that it receives from the computers distributed within said geographical area; and d) having the Access Point Controller determine a Pico-Location of the client device based on the tokens received by the client device from the computers. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A method of location mapping for localizing mobile client devices within a geographical area, comprising:
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a) having an Access Point Controller generate tokens for a plurality of Access Points to transmit within a geographical area; b) having the Access Points wirelessly transmit the tokens to computers distributed within the geographical area; c) having the computers report to the Access Point Controller regarding the tokens received from the Access Points; d) having the Access Point Controller develop statistical mapping of one or more regions within said geographical area based on comparisons of the transmitted tokens said Access Point Controller sent out to said Access Points to transmit to said computers and said received tokens reported back by said computers to the Access Point Controller. - View Dependent Claims (13, 14, 15)
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16. An apparatus for localization of client devices within a geographical region, comprising:
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an Access Point Controller, wherein; said controller being configured to generate tokens for transmission to a plurality of Access Points; said controller being configured to transmit said tokens to Access Points within a geographical area for subsequent wireless transmission to client devices within the geographical area; said controller being configured to receive reports from said client devices within the geographical area as to the tokens received from the Access Points; said controller being configured to perform a Macro-Localization of a client device based on the tokens received by the client device; said controller being configured to generate new tokens for transmission to a plurality of computers within at least a macro-localized region within said geographical area for subsequent transmission to client devices; said controller being configured to receive reports from client devices within the macro-localized region within the geographical area as to the new tokens received from the computers; and said controller being configured to determine a Pico-Location of the client device based on the new tokens received by the client device.
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Specification