System and method for dispatch roaming registration

• Main Authors: CHOKSI OJAS T, MANROA ARUN, BARROW STEVEN W, KHAN SAFWAN A
• Format: Patent
• Language: English
• Published: 06.04.2006
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION; WIRELESS COMMUNICATIONS NETWORKS

A system and method for providing an iDEN user the ability to roam onto a peer iDEN Network. An iGW supports the passing of Dispatch registration information back to the users home network. The iGW will also support and assist in setting up Dispatch Calls between the two iDEN Networks, and vice versa. Exemplary embodiments of the present invention also support roaming from another technology that supports Dispatch Services (i.e., CDMA QChat and GSM PoC), where if a iDEN subscriber with a dual mode phone (i.e., iDEN & GSM), was to roam onto another carrier with a different technology but with Dispatch capabilities, the iDEN subscriber is able to register on the roaming carrier's network. The iGW is capable of receiving the registration update from the roaming network and updating the iDEN Network with the location of the iDEN Subscriber. If another iDEN Subscriber attempts a dispatch call to the roaming iDEN Subscriber, the iGW facilitates the Dispatch Call. This also works in the reverse direction where a roaming unit with iDEN capabilities was to roam onto a iDEN Network.