Patent ID: 7653039

Claim:
A network system for interworking a Wireless Local Area Network (W-LAN) and a 3 rd -Generation (3G) mobile communication network through a Radio-over-Fiber (RoF) link, the network system comprising: the 3G mobile communication network including a voice signal processing network coupled to a Public Switched Telephone Network (PSTN) for voice call processing with respect to a predetermined mobile terminal; a packet data network for data communication with the predetermined mobile terminal; a terminal device for communication with the predetermined mobile terminal; and the W-LAN system coupled to the packet data network of the 3G mobile communication network to provide a W-LAN service to the predetermined mobile communication terminal, wherein the W-LAN system is implemented in a plurality of Base Transceiver Stations (BTSs) included in the 3G mobile communication network through the RoF link; wherein the W-LAN system comprises a plurality of W-LAN Access Points (AP) having a remote antenna structure through the RoF link, so that services for each of the 3G mobile communication network and the W-LAN system are simultaneously provided through a single BTS.