ROAMING GATEWAY
3 Assignments
0 Petitions
Accused Products
Abstract
A roaming gateway has at least one IP network interface, and at least one cellular network interface, and inter-working functions for inter-working between a wireless IP network and a cellular network. The inter-working functions communicate with user devices in an IP network according to a machine-level subscribe-and-notify event package protocol for managing handover of mobile devices roaming between IP and cellular networks. They also poll a cellular network for subscriber status on that cellular network in the absence of a mobility event package. The inter-working functions comprise HSS functionality programmed to access data on a HLR of a cellular network and to perform HSS operations using said data. The gateway applies routing policies specific to call types, allowing or disallowing the anchoring of calls originating in either an IP network or a cellular network based on number prefixes. The inter-working functions comprise an application server programmed to communicate with a user device as a client. The server provides a staging point for cellular supplementary services while anchoring calls, retrieving configurations from cellular network elements and applying appropriate routing based on these configurations and the current state of a call.
132 Citations
33 Claims
-
1-18. -18. (canceled)
-
19. A roaming gateway comprising at least one IP network interface, and at least one cellular network interface, and an inter-working means for inter-working between a wireless IP network and a cellular network, wherein:
-
the inter-working means is adapted to communicate with user devices in an IP network according to a machine-level subscribe-and-notify event package protocol for managing handover of mobile devices roaming between IP and cellular networks, the inter-working means is adapted to poll a cellular network for subscriber status on that cellular network in the absence of a mobility event package; the inter-working means comprises HSS functionality adapted to access data on a HLR of a cellular network and to perform HSS operations using said data; the inter-working means is adapted to apply routing policies specific to call types, allowing or disallowing the anchoring of calls originating in either an IP network or a cellular network based on number prefixes; and the inter-working means comprises an application server adapted to communicate with a user device as a client. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
-
Specification