System and method for providing device authentication in a wireless network
First Claim
1. A method for an authentication device to authenticate a new device in an ultrawide bandwidth (UWB) wireless network, comprising:
- reducing a transmission power of the authentication device to an authentication transmission power level, where an authentication transmission range associated with the authentication power level is lower than a normal transmission range associated with a normal transmission power level used for normal operation in the UWB wireless network;
determining a first distance measurement at the authentication device using ultrawide bandwidth ranging, the first distance measurement providing a measurement of the distance between the new device and an authentication device, as made by the authentication device;
evaluating the first distance measurement to determine if it meets authentication criteria; and
sending authentication data to the new 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.
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Citations
15 Claims
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1. A method for an authentication device to authenticate a new device in an ultrawide bandwidth (UWB) wireless network, comprising:
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reducing a transmission power of the authentication device to an authentication transmission power level, where an authentication transmission range associated with the authentication power level is lower than a normal transmission range associated with a normal transmission power level used for normal operation in the UWB wireless network; determining a first distance measurement at the authentication device using ultrawide bandwidth ranging, the first distance measurement providing a measurement of the distance between the new device and an authentication device, as made by the authentication device; evaluating the first distance measurement to determine if it meets authentication criteria; and sending authentication data to the new device only if the first distance measurement meets the authentication criteria. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification