System and method for providing selective voice call continuity

A method for selectively establishing a voice call continuity link between a mobile device and a voice call continuity application server, comprising:

• receiving a request to establish a voice over IP call connection at the voice call continuity application server from the mobile device, the request including mobile device location information for the mobile device;
• extracting the mobile device location information from the request;
• accessing network location information for at least one network that can support the voice over IP call if it is dropped by an IP network from a database associated with the voice call continuity application server;
• determining a position of the mobile device with respect to the at least one network defined by the network location information that can support the voice over IP call if it is dropped by an IP network;
• determining at the voice call continuity application server whether the voice call continuity link is needed between the voice call continuity server and the mobile device responsive to the determined position;
• establishing the voice call continuity link between the mobile device and the voice call continuity application responsive to a determination that the voice call continuity link is needed;
• and
• establishing a voice over IP call connection without the voice call continuity link responsive to a determination that the voice call continuity link is not needed.

A system for selectively establishing a voice call continuity link, comprising:

• a voice call continuity application server for receiving a receiving a request to establish a voice over IP call connection at the voice call continuity application server from a mobile device, the request including mobile device location information for the mobile device;
• a database associated with the voice call continuity application server for storing network location information for at least one network that can support the voice over IP call if it is dropped by an IP network from the database associated with the voice call continuity application server;
• wherein the voice call continuity application server determines whether the voice call continuity link is needed between the voice call continuity server and the mobile device responsive to the mobile device location information within the request and the network location information stored within the database based upon a position of the mobile device with respect to at least one network defined by the network location information that can support the voice over IP call;
• and
• further wherein the voice call continuity application server establishes the voice call continuity link between the mobile device and the voice call continuity application responsive to a determination that the voice call continuity link is needed.

A system for selectively establishing a voice call continuity link, comprising:

• a SIP client within a mobile device for generating a request for a VoIP call as a SIP INVITE message having mobile device location information within a PANI header of the SIP INVITE message;
• a voice call continuity application server for receiving a receiving the request to establish a voice over IP call connection at the voice call continuity application server from a mobile device, the request including mobile device location information for the mobile device;
• a database associated with the voice call continuity application server for storing network location information for at least one network that can support the voice over IP call if it is dropped by an IP network from the database associated with the voice call continuity application server;
• wherein the voice call continuity application server extracts the mobile device location information from the request and determines a position of the mobile device with respect to at least one network defined by the network location information that can support the voice over IP call if it is dropped by an IP network;
• wherein the voice call continuity application server determines whether the voice call continuity link is needed between the voice call continuity server and the mobile device responsive to the determined position of the mobile device with respect to the at least one network;
• and
• further wherein the voice call continuity application server establishes the voice call continuity link between the mobile device and the voice call continuity application responsive to a determination that the voice call continuity link is needed.