Patent ID: 7218930

Claim:
An automatic recognition system for use in a wireless local area network (LAN), which can automatically detect a new joining portable device and provide the same with a new recognition number in an existing wireless LAN, the system comprises: an access point (AP) module having at least one access point, the access point can bridge the wireless and a wired LAN and act as a central controller for the wireless LAN, meanwhile the access point can coordinate transmission and reception from multiple wireless devices within a specific range; a server having a plurality of initial service set identifier (SSID) connect with an existing portable device through the AP module, automatically complete all necessary setting of accessing the existing wireless LAN for a user and provide the user with all available services in the existing wireless LAN; when the new joining portable device is actuated in the existing wireless LAN, a wireless Network Interface Card (NIC) coupling therewith send a built-in SSID of new joining portable device to the server for recognition; when receiving the built-in SSID from the new joining portable device, the server will temporarily cut off a connection between the server and an existing portable device in the existing wireless LAN and select a IP address retained in the server to establish a new connection with the new joining portable device; after establishing the new connection with the new joining portable device, the server use the initial SSID to re-connect with the existing portable device and send the same to the new joining portable device; after receiving the initial SSID, the new joining portable device temporarily terminate a built-in IP address thereof and replace the built-in IP address with an initial IP address from the server.