A method by which an access point, AP, device from among a plurality of AP devices on a same network establishes a connection to a terminal, the method comprising: receiving signals of the terminal; determining whether the terminal is located within a pre-set distance range from the AP device based on the received signals; registering, by the AP device, media access control, MAC, address information regarding the terminal, when the terminal is located within the pre-set distance range; determining whether the terminal is moving away from the AP device or moving towards the AP device based on a difference between the signals received from the terminal; when determining that the terminal is moving away from the AP device, deleting the registered MAC address information; when determining that the terminal is moving towards the AP device, maintaining the registered MAC address information; receiving a connection request to the AP device from the terminal; comparing the MAC address information regarding the terminal extracted from the connection request to the registered MAC address information; and establishing a connection between the AP device and the terminal based on the comparison; wherein, in the comparing: when the registered MAC address information is identical to the MAC address information regarding the terminal, the terminal is connected to the AP device, and when the registered MAC address information is not identical to the MAC address information regarding the terminal, the terminal is not connected to the AP device. receiving signals of the terminal; determining whether the terminal is located within a pre-set distance range from the AP device based on the received signals; registering, by the AP device, media access control, MAC, address information regarding the terminal, when the terminal is located within the pre-set distance range; determining whether the terminal is moving away from the AP device or moving towards the AP device based on a difference between the signals received from the terminal; when determining that the terminal is moving away from the AP device, deleting the registered MAC address information; when determining that the terminal is moving towards the AP device, maintaining the registered MAC address information; receiving a connection request to the AP device from the terminal; comparing the MAC address information regarding the terminal extracted from the connection request to the registered MAC address information; and establishing a connection between the AP device and the terminal based on the comparison; wherein, in the comparing: when the registered MAC address information is identical to the MAC address information regarding the terminal, the terminal is connected to the AP device, and when the registered MAC address information is not identical to the MAC address information regarding the terminal, the terminal is not connected to the AP device. when the registered MAC address information is identical to the MAC address information regarding the terminal, the terminal is connected to the AP device, and when the registered MAC address information is not identical to the MAC address information regarding the terminal, the terminal is not connected to the AP device.