Patent ID: 8483685

Claim:
A mobile device capable of providing location information, comprising: a processor; and a memory coupled to the processor and capable of storing data, wherein the processor is configured for using the data such that the mobile device can: send to an access gateway including a call session control function (CSCF) a registration request including registration information; receive from the CSCF a registration confirmation including an Internet Protocol (IP) address assigned to the mobile device; generate location information of the mobile device based at least in part on information included in the registration confirmation, wherein the location information of the mobile device includes any information that can place the mobile device at a physical location; store the generated location information of the mobile device; if the mobile device is able to send location information, send to the CSCF a first location-based service request including identifying information for the mobile device and the generated location information of the mobile device; and receive from the CSCF at least one first message including information related to the requested location-based service in response to the location-based service request, if the mobile device is not able to send location information, send to CSCF a second location-based service request including the IP address assigned to the mobile device; and receive from the CSCF at least one second message including information related to the requested location-based service in response to the location-based service request, wherein the at least one second message is prepared by the CSCF on behalf of the mobile device based on location information of the mobile device generated at the CSCF by correlating at least a part of the registration information and the IP address assigned to the mobile device.