Vehicle and method for controlling the vehicle

Patent metadata

Field	Value
Publication number	US-2017190316-A1
Application number	US-201615132982-A
Country	US
Kind code	A1
Filing date	Apr 19, 2016
Priority date	Jan 4, 2016
Publication date	Jul 6, 2017
Grant date	—

Abstract

A vehicle includes a communication unit for transmitting a Low Frequency (LF) signal including a test value to an external device, and for receiving a Radio Frequency (RF) signal including a verification value from the external device, a timer for determining a passage time from a point of time of transmission of the test value to a point of time of reception of the verification value, and a controller for authenticating the external device based on the passage time and whether the test value and the verification value correspond to each other.

First claim

What is claimed is:

1 . A vehicle comprising:
a communication unit for transmitting a Low Frequency (LF) signal including a test value to an external device, and for receiving a Radio Frequency (RF) signal including a verification value from the external device; a timer for determining a passage time from a point of time of transmission of the test value to a point of time of reception of the verification value; and a controller for authenticating the external device based on the passage time and whether the test value and the verification value correspond to each other.

2 . The vehicle of claim 1 , wherein the communication value transmits the LF signal and receives the RF signal as many times as a predetermined threshold number.

3 . The vehicle of claim 1 , wherein the timer determines a passage time from a first point of time of transmission of the test value to a last point of time of reception of the verification value.

4 . The vehicle of claim 1 , wherein the controller determines that relay attack has occurred if the passage time is equal to or greater than a predetermined threshold time.

5 . The vehicle of claim 1 , wherein the communication unit transmits information about a code corresponding to the test value in an LF signal.

6 . The vehicle of claim 1 , further comprising a storage for storing one or more codes, and a test value and a verification value for each code.

7 . The vehicle of claim 1 , wherein the communication unit comprises:
an LF communication unit for transmitting a scanning signal to an external device that exists within a possible range of LF signal transmission; and an RF communication unit for receiving a scanning response signal from the external device.

8 . The vehicle of claim 7 , wherein the LF communication unit transmits an authentication request signal including the test value if the RF communication unit receives the scanning response signal, and
wherein the RF communication unit receives an authentication response signal including the verification value.

9 . The vehicle of claim 1 , wherein the test value includes a plurality of test elements, and the verification value includes a plurality of verification elements.

10 . A method for controlling a vehicle, the method comprising:
transmitting a Low Frequency (LF) signal including a test value to an external device; receiving a Radio Frequency (RF) signal including a verification value from the external device; determining a passage time from a point of time of transmission of the test value to a point of time of reception of the verification value; and authenticating the external device based on the passage time and whether the test value and the verification value correspond to each other.

11 . The method of claim 10 , wherein transmitting an LF signal including a test value to an external device comprises transmitting the LF signal as many times as a predetermined threshold number, and
wherein receiving an RF signal including a verification value from the external device comprises receiving the RF signal as many times as the predetermined threshold number.

12 . The method of claim 11 , wherein determining a passage time from a point of time of transmission of the test value to a point of time of reception of the verification value comprises determining a passage time from a first point of time of transmission of the test value to a last point of time of reception of the verification value.

13 . The method of claim 10 , wherein authenticating the external device based on the passage time and whether the test value and the verification value correspond to each other comprises determining that relay attack has occurred if the passage time is equal to or greater than a predetermined threshold time.

14 . The method of claim 10 , further comprising: before transmitting an LF signal including a test value to an external device:
transmitting information about one of one or more codes stored in advance in a scanning signal; and receiving a scanning response signal corresponding to the scanning signal.

15 . The method of claim 14 , wherein transmitting an LF signal including a test value to an external device comprises transmitting an authentication request signal including the test value if the scanning response signal is received, and
wherein receiving an RF signal including a verification value from the external device comprises receiving an authentication response signal including the verification value.

16 . The method of claim 10 , wherein the test value includes a plurality of test elements, and the verification value includes a plurality of verification elements.

17 . The method of claim 10 , wherein authenticating the external device based on the passage time and whether the test value and the verification value correspond to each other comprises authenticating the external device based on whether a verification value corresponding to the test value stored in advance corresponds to the verification value included in the RF signal.

18 . The method of claim 16 , wherein authenticating the external device based on the passage time and whether the test value and the verification value correspond to each other comprises authenticating the external device based on whether a verification element corresponding to each test element stored in advance corresponds to a verification element included in the RF signal.

19 . The method of claim 10 , wherein transmitting an LF signal including a test value to an external device comprises starting a timer, and
wherein receiving an RF signal including a verification value from the external device comprises stopping the timer.

20 . The method of claim 10 , wherein authenticating the external device based on the passage time and whether the test value and the verification value correspond to each other comprises determining that relay attack has occurred if the test value does not correspond to the verification value.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Kim Sinjung

Classifications

• H04W12/06

  Authentication · CPC title

• G07C2009/00555

  comprising means to detect or avoid relay attacks · CPC title

• G07C9/00309

  operated with bidirectional data transmission between data carrier and locks · CPC title

• B60R25/24 Primary

  using electronic identifiers containing a code not memorised by the user · CPC title

• H04W12/61

  Time-dependent · CPC title