System for providing device authentication in a wireless network
First Claim
1. An authentication device, comprising:
- a memory configured to store authentication data;
an authentication enable element configured to transition the authentication device into and out of an authentication mode;
a transceiver configured to wirelessly communicate with a remote device and to provide the authentication data to the remote device when the authentication device is in the authentication mode;
an authentication circuit configured to perform signal and data analysis required to perform an authentication process with respect to the remote device; and
a ranging circuit configured to determine a first distance measurement using wireless ranging, the first distance measurement providing a measurement of a distance between the remote device and the authentication device, as made by the authentication device,wherein the authentication circuit is configured to evaluate the first distance measurement to determine if it meets authentication criteria, and to send the authentication data to the remote device only if the first distance measurement meets the authentication criteria.
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Abstract
A system and method are provided for authenticating a new device in a wireless network using an authentication device. First, the new device estimates the distance between the new device and the authenticating device as a first distance measurement, and sends the first distance measurement to the authentication device. The authentication device then estimates the distance between the new device and the authenticating device as a second distance measurement. The authentication device then evaluates the first and second distance measurements to determine if they meet authentication criteria and sends authentication data to the new device only if the first and second distance measurements meet the authentication criteria. These criteria can be that they do not differ by more than a set error value or that they both are below a set maximum value.
28 Citations
17 Claims
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1. An authentication device, comprising:
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a memory configured to store authentication data; an authentication enable element configured to transition the authentication device into and out of an authentication mode; a transceiver configured to wirelessly communicate with a remote device and to provide the authentication data to the remote device when the authentication device is in the authentication mode; an authentication circuit configured to perform signal and data analysis required to perform an authentication process with respect to the remote device; and a ranging circuit configured to determine a first distance measurement using wireless ranging, the first distance measurement providing a measurement of a distance between the remote device and the authentication device, as made by the authentication device, wherein the authentication circuit is configured to evaluate the first distance measurement to determine if it meets authentication criteria, and to send the authentication data to the remote device only if the first distance measurement meets the authentication criteria. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An authentication device, comprising:
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a memory configured to store authentication data; a transceiver configured to wirelessly communicate with a remote device and to provide the authentication data to the remote device when the authentication device is in the authentication mode; an authentication circuit configured to perform signal and data analysis required to perform an authentication process with respect to the remote device; and a ranging circuit configured to determine a first distance measurement using wireless ranging, the first distance measurement providing a measurement of the distance between the remote device and the authentication device, as made by the authentication device, wherein the authentication circuit is configured to evaluate the first distance measurement to determine if it meets authentication criteria, and to send the authentication data to the remote device only if the first distance measurement meets the authentication criteria. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. An authentication device, comprising:
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a memory configured to store authentication data; a transceiver configured to wirelessly communicate with a remote device and to provide the authentication data to the remote device when the authentication device is in the authentication mode; an authentication circuit configured to perform signal and data analysis required to perform an authentication process with respect to the remote device; and a power regulation circuit to set a power transmission level for the transceiver to an authentication transmission power level in response to a power regulation command from the authentication enable element, wherein the authentication transmission power level is between 15 and 25 dB below a normal transmission power level used for normal operation of an associated network.
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Specification