Patent ID: 8718592

Claim:
A method, coordinated from a switch, for determining a location of a mobile device and providing the location to a Public Safety Answering Point (PSAP), the method comprising: while engaging in an emergency services communication over a macronetwork, and while the mobile device is in range of one or more micronetworks, determining whether at least one macronetwork-based location determination technique from a set of macronetwork-based location determination techniques is available, wherein the macronetwork-based location determination techniques of the set include a Global Positioning System, Time Delay On Arrival (TDOA), an Assisted Global Positioning System (AGPS), or a Round Trip Time (RTT) technique, and wherein each of the available macronetwork-based location determination techniques has a desired accuracy of determined location of the mobile device; and if at least one macronetwork-based location determination technique of the set of macronetwork-based location determination techniques is available and if the at least one macronetwork-based location determination technique has an accuracy equal or exceeding the corresponding desired accuracy of determination of the mobile device, determining the geographic coordinates of the mobile device according to at least one of the available macronetwork-based location determination techniques; and providing the determined geographic coordinates as an indication of the location of the mobile device to a Public Safety Answering Point (PSAP), otherwise, while continuing the emergency services communication over the macronetwork, determining the location of the mobile device according to a micronetwork by: receiving an identifier from at least one micronetwork; and retrieving geographic coordinates or a street address based on the received identifier; and providing the retrieved geographic coordinates or street address as an indication of the location of the mobile device to the Public Safety Answering Point (PSAP).