Vehicle and method of controlling the same

1. A vehicle comprising:

a short-range communication module configured to receive a signal from a digital key within a preset distance ranging from the short-range communication module to the digital key;

a lamp; and

a controller connected to and configured to control the lamp and the short-range communication module according to a received signal strength indicator (RSSI) of the received signal,

wherein the controller is configured to:

determine a reference range based on the RSSI of the received signal in a first mode,

control the lamp to provide information related to a position of the digital key according to the RSSI of the received signal and the reference range in a second mode, and

control the short-range communication module to transmit a signal regarding the position of the digital key to the controller in the second mode.

2. The vehicle according to claim 1 , wherein, in a response to a change in the RSSI of the received signal, the controller is configured to control the lamp to provide information related to access of the digital key based on the RSSI of the received signal.

3. The vehicle according to claim 1 , wherein the controller is configured to determine a maximum value of the RSSI of the received signal in the first mode, and to determine the reference range based on the maximum value.

4. The vehicle according to claim 1 , wherein, in a response to the RSSI of the received signal being within the reference range in the second mode, the controller is configured to control the lamp to inform that a current position of the digital key is an optimal position.

5. The vehicle according to claim 1 , wherein the controller is configured to control the lamp to start blinking in a response to the digital key approaching within the preset distance.

6. The vehicle according to claim 1 , wherein, in a response to the RSSI of the received signal being within the reference range in the second mode, the controller is configured to control an audio video navigation (AVN) device of the vehicle to indicate that a current position of the digital key is an optimal position.

7. The vehicle according to claim 1 , wherein the short-range communication module includes a Near Field Communication (NFC) communication module or a Bluetooth communication module, and is provided on a door handle of the vehicle.

8. The vehicle according to claim 1 , wherein the digital key communicating with the short-range communication module is a mobile device or an NFC card key.

9. A method of controlling a vehicle, the method comprising:

receiving, by a short-range communication module, a signal from a digital key within a preset distance ranging from the short-range communication module to the digital key;

controlling, by a controller, a lamp and the short-range communication module according to a received signal strength indicator (RSSI) of the received signal;

determining, by the controller, a reference range according to the RSSI of the received signal in a first mode;

controlling, by the controller, the lamp to provide information related to a position of the digital key according to the RSSI of the received signal and the reference range in a second mode; and

controlling, by the controller, the short-range communication module to transmit a signal regarding the position of the digital key to the controller in the second mode.

10. The method according to claim 9 , wherein the controlling of the lamp according to the RSSI includes:

in a response to a change in the RSSI of the received signal, controlling, by the controller, the lamp to provide information related to access of the digital key according to the RSSI of the received signal.

11. The method according to claim 9 , wherein the determining of the reference range includes:

determining, by the controller, a maximum value of the RSSI of the received signal in the first mode; and

determining, by the controller, the reference range based on the maximum value.

12. The method according to claim 9 , wherein the controlling of the lamp to provide information related to the position of the digital key includes:

in a response to the RSSI of the received signal being within the reference range in the second mode, controlling, by the controller, the lamp to inform that a current position of the digital key is an optimal position.

13. The method according to claim 9 , further including:

controlling, by the controller, the lamp to start blinking in a response to the digital key approaching within the preset distance.

14. The method according to claim 9 , further including:

in a response to the RSSI of the received signal being within the reference range in the second mode, controlling, by the controller, an audio video navigation (AVN) device of the vehicle to indicate that a current position of the digital key is an optimal position.

15. The method according to claim 9 , wherein the short-range communication module includes a Near Field Communication (NFC) communication module or a Bluetooth communication module, and is provided on a door handle of the vehicle.

16. The method according to claim 9 , wherein the digital key is a mobile device or an NFC card key.

17. The method of claim 9 , wherein the controller includes:

a processor; and

a non-transitory storage medium on which a program for performing the method of claim 9 is recorded and executed by the processor.

18. A non-transitory computer readable storage medium on which a program for performing the method of claim 9 is recorded.