Patent ID: 8743709
Filing Date: 2014-06-03
Classification: H04L,H04W

Abstract:
1. A method of providing services to a multi-mode mobile station attached to a circuit-switched access network in a circuit-switched domain, comprising: receiving, at a first node in the circuit-switched domain, a first message from the multi-mode mobile station indicating a service relating to the multi-mode mobile station; in response to the first message, sending, over a signaling interface, from the first node in the circuit-switched domain to a second node in a packet-switched domain, a control message containing a circuit-switched control indication to enable the service to be performed, wherein the signaling interface is between the first node and the second node, and the signaling interface is separate from an interface between a media gateway control function and the circuit-switched domain, and wherein each of the first node and second node is a corresponding control node distinct from any mobile station; allowing the second node in the packet-switched domain to control anchoring of the services for the multi-mode mobile station at the second node even though the multi-mode mobile station is attached to the circuit-switched access network; allowing the multi-mode mobile station to dual-register in the circuit-switched domain and in the packet-switched domain; and when the multi-mode mobile station is dual-registered in the circuit-switched domain and in the packet-switched domain, storing, in the second node, information received from the multi-mode mobile station regarding quality of Radio Frequency (RF) coverage in the circuit-switched access network in the circuit-switched domain or in a packet-switched access network in the packet-switched domain to which the multi-mode mobile station is attachable, wherein the second node is configured to use the information to detect whether a registration in the circuit-switched domain or in the packet-switched domain is stale.