Patent ID: 8818360
Filing Date: 2014-08-26
Classification: H04W

Abstract:
1. A method for providing roaming control, comprising: at a signaling message routing node separate from a home subscriber server (HSS), wherein the signaling message routing node comprises an IP multimedia subsystem (IMS) serving call session control function (S-CSCF): (a) receiving a signaling message at the signaling message routing node in a network of a home service provider of a mobile subscriber, the signaling message being generated in response to the mobile subscriber registering in a foreign carrier's network; (b) determining whether the mobile subscriber is allowed, by the home service provider, to roam in the foreign carrier's network; (c) in response to determining that the mobile subscriber is not allowed to roam in the foreign carrier's network, generating and sending a response to the signaling message indicating that the mobile subscriber is not allowed to roam in the foreign carrier's network, wherein generating and sending a response to the signaling message is performed instead of sending the signaling message to the HSS, wherein steps (a)-(c) are performed at the signaling message routing node separate from the HSS; and (d) in response to determining that the mobile subscriber is allowed to roam in the foreign carrier's network, sending the signaling message to the HSS.