TRANSMISSION DEVICE AND METHOD THEREOF

摘要

A gateway program (40) receives data from a mobile station, adds a VLAN tag of a user system corresponding to the mobile station, converts the IP address into an IP address based on the system of the user system, and transmits it to the user system (30). Moreover, the gateway program (40) receives data from the user system, deletes the VLAN tag, converts the IP address into an IP address of the mobile station corresponding to the user system, and transmits it to the mobile station of the mobile communication system (2).