公开(公告)号：CA2486371A1

公开(公告)日：2003-12-04

申请号：CA2486371

申请日：2003-05-16

Applicant: INTERDIGITAL TECH CORP

Inventor： REDDY GAUTAM G

IPC: H04M1/00 ,  H04L29/12 ,  H04M1/253 ,  H04M1/675 ,  H04M1/725 ,  H04W8/26 ,  H04W80/04 ,  H04W88/02 ,  H04B1/38

Abstract: A mobile unit (200) includes a handset (205) and a removable storage module (210) having a unique storage module identity, for storing information specific to a user, including an Internet Protocol (IP) address (340). Additional information regarding a Public Land Mobile Network (PLMN) (320) a nd International Mobile Subscriber Identity (IMSI) (330) which uniquely identifies the subscriber is also stored in the removable storage module(210 ). Upon successfully camping on a cell of a mobile network (405), the IP addres s (340) is forwarded to an IP-based network (410) capable of communicating wit h the mobile unit (200). In an alternate embodiment, the mobile unit (200) has multi-network capabilities which allow it to communicate with an IP-based network (410) and a cellular network (405) at the same time. In another embodiment, the existing cellular network services for the mobile unit (200) having multi-network capabilities are routed through the IP-based network (410).