Method and apparatus for authenticating information received at an airport surface wireless node
First Claim
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1. A method for authenticating a signal received at a wireless node, the method comprising:
- receiving the signal at the wireless node, wherein the wireless node is one of a plurality of wireless nodes in a communications network;
identifying a set of parameters for the signal;
identifying a distance between the wireless node and a source of the signal using a location of the wireless node and the set of parameters for the signal; and
determining whether the source of the signal is an authorized source using the distance identified;
wherein the step of determining whether the source of the signal is the authorized source using the distance identified comprises;
determining whether the distance between the wireless node and the source of the signal matches a known distance between the wireless node and one of a group of in-range wireless nodes in the plurality of wireless nodes in the communications network within selected tolerances using a database; and
wherein the selected tolerances are computed using a model and a location of an authenticator in the wireless node.
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Abstract
A method and apparatus for authenticating a signal received at a wireless node. The signal is received at the wireless node. The wireless node is one of a plurality of wireless nodes in a communications network. A set of parameters is identified for the signal. A distance between the wireless node and a source of the signal is identified using a location of the wireless node and the set of parameters for the signal. A determination as to whether the source of the signal is an authorized source is made using the distance identified.
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18 Claims
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1. A method for authenticating a signal received at a wireless node, the method comprising:
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receiving the signal at the wireless node, wherein the wireless node is one of a plurality of wireless nodes in a communications network; identifying a set of parameters for the signal; identifying a distance between the wireless node and a source of the signal using a location of the wireless node and the set of parameters for the signal; and determining whether the source of the signal is an authorized source using the distance identified; wherein the step of determining whether the source of the signal is the authorized source using the distance identified comprises; determining whether the distance between the wireless node and the source of the signal matches a known distance between the wireless node and one of a group of in-range wireless nodes in the plurality of wireless nodes in the communications network within selected tolerances using a database; and wherein the selected tolerances are computed using a model and a location of an authenticator in the wireless node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A communications network comprising:
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a group of in-range wireless nodes within a communications range for a wireless node; the wireless node, wherein the wireless node is configured to; receive a signal; identify a set of parameters for the signal; identify a distance between the wireless node and a source of the signal using a location of the wireless node and the set of parameters for the signal; and determine whether the source of the signal is an authorized source using the distance identified; and a database, wherein the wireless node is configured to determine whether the source of the signal is the authorized source using the distance identified by determining whether the distance between the wireless node and the source of the signal matches a known distance between the wireless node and one of the group of in-range wireless nodes in the communications network within selected tolerances using the database; wherein the selected tolerances are computed using a model and a location of an authenticator in the wireless node. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. An airport communications system comprising:
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a number of databases; and a plurality of wireless nodes, wherein a wireless node in the plurality of wireless nodes is configured to; receive a signal; identify a set of parameters for the signal; identify a distance between the wireless node and a source of the signal using a location of the wireless node and the set of parameters for the signal; and determine whether the distance between the wireless node and the source of the signal matches a known distance between the wireless node and one of a group of in-range wireless nodes in the plurality of wireless nodes within selected tolerances using a database in the number of databases to determine whether the source of the signal is an authorized source; wherein the selected tolerances are computed using a model and a location of an authenticator in the wireless node.
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Specification