Patent ID: 6016318
Filing Date: 2000-01-18
Classification: H04L,H04Q,H04W

Abstract:
A virtual private network system accessed by an internet, comprising:a virtual local area network (LAN) connected to a LAN emulation server and LAN emulation clients;a router connected between said internet and said virtual LAN;a public mobile data network connected to a location register and mobile data subscriber processing units;a data gateway connected between said internet and said public mobile data network;a virtual private network gateway connected between said virtual LAN and said public mobile data network; anda mobile data terminal having one internet protocol (IP) address and one network address of said public mobile data network and capable of being connected to either one of said LAN emulation clients or one of said mobile data subscriber processing units,wherein said location register storing a correspondence between said network address and one of said mobile data subscriber processing units,wherein said virtual private network gateway comprises:a memory for storing a correspondence between said IP address and said network address of said mobile data terminal;a communication control section communicatively connected to said public mobile data network;a call control section having a LAN emulation capability; anda transmission control protocol/internet protocol (TCP/IP) interface communicatively connected to said virtual LAN.