System and Method for Authenticating a Connection Between a User Device and a Vehicle

A vehicle comprising:

• a memory configured to store programming instructions;
• and
• a processor coupled to the memory, wherein the programming instructions cause the processor to be configured to:
• send, to a user device, a first wireless signal through a connection channel;
• receive, from the user device, a second wireless signal through the connection channel;
• acquire a second signal strength sequence from second N continuous signal strength characteristics (PFVeh) of the second wireless signal;
• receive, from the user device in response to sending the first wireless signal, a first signal strength sequence from first N continuous signal strength characteristics (PFUDev) of the first wireless signal;
• and
• authenticate a connection between the user device and the vehicle based on the first signal strength sequence and the second signal strength sequence.

A system comprising:

• a vehicle configured to send a first wireless signal through a connection channel;
• and
• a user device coupled to the vehicle and configured to:
• receive, from the vehicle, the first wireless signal through the connection channel;
• send, to the vehicle, a second wireless signal through the connection channel;
• acquire a first signal strength sequence from first N continuous signal strength characteristics (PFUDev) of the first wireless signal;
• and
• communicate the first signal strength sequence to the vehicle,
• wherein the vehicle is further configured to:
• receive, from the user device, the second wireless signal through the connection channel;
• acquire a second signal strength sequence from second N continuous signal strength characteristics (PFVeh) of the second wireless signal;
• and
• receive, from the user device, the first signal strength sequence,
• wherein the first signal strength sequence and the second signal strength sequence are for authenticating a connection between the user device and the vehicle.