Patent ID: 7616953
Filing Date: 2009-11-10
Classification: H04W

Abstract:
1. A method for realizing subscriber's roaming service by a route server, employed in a next generation network architecture which realizes cross-domain call route through the route server, comprising the following steps of: (a) a subscriber equipment accessing to a network, sending a register request, and reporting subscriber identification and authentication information after finding a local register server; (b) the local register server judging whether the subscriber is a contracted subscriber of home domain or not according to the subscriber identification, if yes, performing step (c), otherwise, performing step (g); (c) the local register server judging whether the authentication information is right or not, if not, refusing the registration, otherwise, performing the next step; (d) the local register server notifying a local soft switch control device to perform a register operation; (e) the local register server judging whether there is roaming register information of the subscriber being existing, if not, registering the subscriber and reporting a location update message to the route server, and ending the registration; otherwise, notifying the register server of roaming region that the subscriber has returned, and reporting the location update message of the subscriber to the route server, then performing the next step; (f) the register server of roaming region logouting the register information of the roaming subscriber, and reporting the location update message of the roaming subscriber to the route server via the soft switch control device, then ending the registration; (g) the register server of roaming region finding the local register server through the route server, and judging whether the authentication information is right or not in messages exchange between the register server of roaming region and the register server of home region, if not, refusing and ending the registration, otherwise, obtaining service information of the roaming subscriber, and performing the next step; (h) the register server of roaming region notifying the soft switch control device to perform register operation, allocate resource for the roaming subscriber, store location information of home region and the service information of the roaming subscriber, and send the register message containing the location information of the roaming region to the local register server; (i) the local register server notifying the soft switch control device of home region to register the registration, and reporting the location update message of the roaming subscriber to the route server, and notifying the register result to the register server of roaming region; (j) the register server of roaming region notifying the soft switch control device of roaming region to report the location update message of the roaming subscriber to the route server, and ending the registration; and (k) for roaming subscriber-related services initiated in the roaming region and non-roaming region, the soft switch control device of roaming region performing call connection and service control according to local service and inter-office service respectively.