Mobile device, a vehicle having the same, and a control method thereof

A control method of a vehicle, the control method comprising:

• receiving channel hopping information and a time stamp of a data area of a packet from a communicator;
• broadcasting the packet as an advertising signal through any one of a plurality of preset channels;
• in response to information of the advertising signal being identical to information of a response signal of a mobile device received through the communicator, determining as a relay attack detection;
• controlling deactivation of a digital key in response to determining as the relay attack detection;
• in response to the information of the advertising signal being different from the information of the response signal of the mobile device, confirming a channel through which the information of the response signal is received;
• and
• in response to the confirmed channel being identical to the any one channel, controlling activation of the digital key.

A mobile device comprising:

• a display device;
• a memory configured to store identification information of a vehicle and a digital key;
• a communicator configured to communicate with the vehicle;
• and
• a processor configured to:
• in response to receiving information of an advertising signal through any one of a plurality of preset channels, confirm a packet in the received information of the advertising signal,
• confirm channel hopping information and identification information of the vehicle of a data area of the packet,
• in response to the confirmed identification information of the vehicle being identical to the identification information of the vehicle stored in the memory, transmit information of a response signal through the any one channel, and
• in response to receiving a communication connection signal form the vehicle, control the display device to display communication connection information.