Authentication of devices in a wireless network
AssigneeNXP B.V.
InventorsHarsh Dhand, Srinivasa Rao
Life of this patent
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Abstract
A method for authentication of devices (D1, D2, D3) in a wireless network, wherein—a device (D1, D2, D3) periodically switches its mode from a read mode, in which it is able to receive authentication data from one or more other devices (D1, D2, D3), to a write mode, in which it sends out authentication data to the one or more other devices (D1, D2, D3), according to a random time slot scheme, —the device (D1, D2, D3) authenticates itself after having received authentication data from another device (D1, D2, D3) during the read mode, and—the device (D1, D2, D3) switches permanently its mode to the write mode after being authenticated.
Claims15
A method for authentication of devices in a wireless network, the method comprising:
- operating a device in an authentication mode in which the device periodically switches from a read mode, in which it is able to receive authentication data from one or more other devices, to a write mode, in which it sends out authentication data to the one or more other devices, according to a random time slot scheme,
- authenticating the device in response to authentication data received from another device during the read mode, and
- permanently switching the mode of the device to the write mode in response to the device being authenticated.
A wireless network device comprising:
- a radio frequency interface configured and arranged to implement an authentication protocol that includes an authentication mode in which the device periodically switches from a read mode, in which it is configured to receive authentication data from one or more other devices, to a write mode, in which it is configured to send out authentication data to the one or more other devices, and vice versa according to a random time slot scheme,
- wherein the device is adapted to authenticate after having received authentication data from another device during the read mode, and
- wherein the device is further adapted to switch permanently its mode to the write mode after being authenticated.
A system for authentication of devices in a wireless network, comprising:
- at least two devices each having an authentication mode in which a device periodically switches from a read mode, in which it receives authentication data from one or more other devices, to a write mode, in which it sends out authentication data to the one or more other devices, according to a random time slot scheme,
- wherein one of the at least two devices is configured to authenticate itself after having received authentication data from another device during the read mode, and the device switches permanently its mode to the write mode after being authenticated.
A wireless network device comprising:
- a memory storing an authentication identification;
- a radio frequency circuit configured and arranged to implement a bi-directional authentication process that includes
- a read mode in which the wireless network device operates as a slave and is configured and arranged to
- wirelessly receive an authentication identification;
- compare the received authentication identification to the stored authentication identification;
- and
- authenticate the network device based upon the comparison of the received authentication identification to the stored authentication identification;
- and
- a write mode in which the wireless network device operates as a master and is configured and arranged to
- access the stored authentication identification;
- and
- wirelessly transmit the stored authentication identification to another wireless network device operating as a slave in a read mode;
- and
- the radio frequency circuit further configured and arranged to alternate between the read mode and the write mode until the wireless device is authenticated in read mode and thereafter to remain in write mode.
Dependencies are inferred from the claim text.