Method and system for controlling opening and closing vehicle door

A method for controlling opening and closing a vehicle door, comprising:

• determining, by a controller, whether a door is in a locked state;
• determining, by the controller, whether a smart key is within a predetermined distance from the vehicle using a sensor when the door is determined to be in the locked state;
• changing, by the controller, a door latch module to a “ready-to-open” state in the locked state of the door when the smart key is determined to be within the predetermined distance;
• determining, by the controller, whether the smart key is maintained to be within the predetermined distance;
• operating, by the controller, an exterior handle of the door;
• and
• opening the door and releasing locking of the door, by the controller, simultaneously when the exterior handle is operated,
• wherein after the simultaneous opening of the door and releasing of the locking of the door, a door-open (AJAR) signal is generated by the opened door, and the controller is configured to release the locking of all doors by operating a locking unit, and
• a sensing unit is mounted within the exterior handle and configured to sense an output signal generated from the smart key and to output the sensed signal to the controller.