Patent ID: 8150392
Filing Date: 2012-04-03
Classification: H04Q,H04W

Abstract:
1. A method for handing off a mobile station being served by a serving system in a private wireless network to a target system in a public wireless network, said public wireless network having a home location register, said home location register including a public network subscriber database, said public network subscriber database containing a first data record for said mobile station, said first data record including a first locator address for locating said mobile station, said private wireless network having a gateway in communication with said serving system and a private network subscriber database accessible by said gateway, said private network subscriber database containing a second data record for said mobile station, said second data record including a second locator address for locating said mobile station, said second locator address identifying said serving system, said method comprising: said home location register receiving a registration notification message from said target system, said registration notification message identifying said mobile station; in response to said registration notification message, said home location register transmitting a first registration cancellation message to said gateway, said first registration cancellation message identifying said mobile station; and in response to said first registration cancellation message, said gateway transmitting a second registration cancellation message to said serving system, said second registration cancellation message identifying said mobile station.