Wireless ad-hoc RFID tracking system
First Claim
1. A method of tracking an entity comprising:
- operating a plurality of tracking stations in a wireless ad-hoc network;
assigning to the entity a unique identifier;
determining the presence of the entity within a predetermined area at a first of the plurality of tracking stations responsive to detection of the unique identifier;
comparing at the tracking station the unique identifier that has been detected with a database of unique identifiers stored at the tracking station;
wirelessly transmitting the unique identifier that has been assigned to the entity to at least a second of the plurality of tracking stations; and
dynamically varying the number of the tracking stations on an ad-hoc basis responsive to variations in a tracking environment; and
wherein the step of wirelessly transmitting the unique identifier comprises selectively communicating the unique identifier to at least the second tracking station based on a predicted transit scenario of the entity.
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Accused Products
Abstract
A method of tracking an entity (130) through a plurality of tracking stations (205, 210, 215, 220) in a wireless ad-hoc network. A unique identifier (250) can be assigned to the entity at a first (205) of the plurality of tracking stations and wirelessly transmitted to at least a second tracking station (210). The number of the tracking stations can be dynamically varied on an ad-hoc basis responsive to variations in a tracking environment. The unique identifier can be selectively communicated to at least a second tracking station based on a predicted transit scenario of the entity. The identifier can be stored on a datastore, such as a radio frequency identification tag (125) attached to the entity. A biometric scan of the entity can be performed. For example, a facial scan, an iris scan, a fingerprinting, or palm printing can be performed to assign a unique identifier.
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Citations
14 Claims
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1. A method of tracking an entity comprising:
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operating a plurality of tracking stations in a wireless ad-hoc network; assigning to the entity a unique identifier; determining the presence of the entity within a predetermined area at a first of the plurality of tracking stations responsive to detection of the unique identifier; comparing at the tracking station the unique identifier that has been detected with a database of unique identifiers stored at the tracking station; wirelessly transmitting the unique identifier that has been assigned to the entity to at least a second of the plurality of tracking stations; and dynamically varying the number of the tracking stations on an ad-hoc basis responsive to variations in a tracking environment; and wherein the step of wirelessly transmitting the unique identifier comprises selectively communicating the unique identifier to at least the second tracking station based on a predicted transit scenario of the entity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A tracking system comprising:
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at least two tracking stations, each of the tracking stations comprising; a processor; a datastore containing a database of unique identifier information; a wireless network adapter capable of operating in a wireless ad-hoc network; and a radio frequency identification scanning device coupled to the processor and responsive to a RFID tag for determining the presence of said RFID tag within a predetermined area; wherein the processor compares a unique identifier associated with the RFID tag with a database of unique identifiers stored at the tracking station; wherein the wireless network adaptor wirelessly transmits the unique identifier to at least a second one of the tracking stations; and wherein the processor determines a predicted transit scenario for an entity possessing the unique identifier and selectively identifies at least the second one of the tracking stations to which the unique identifier is transmitted based on the predicted transit scenario. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification