Patent ID: 8509731

Claim:
A mobile communication device comprising: a radio transceiver for sending and receiving messages; and a memory coupled to a processor for storing and executing instructions to determine that a position determining subsystem is unable to provide location information for an emergency call and to execute an emergency locator component operative to: send a locator activation request for at least temporary activation of one or more of a plurality of radio transceivers of at least another mobile communication device; broadcast an emergency location request message using the radio transceiver, wherein the emergency location request message includes a unique identifier of the mobile communication device and a received signal strength indication (RSSI) value to enable the at least another mobile communication device to determine if it should respond to the emergency location request message; receive one or more emergency location response messages comprising location information of the at least one other mobile device in response to the emergency location request message, the response message including information for determining a distance estimate; and determine location information for the device based on the one or more emergency location response messages and the distance estimate.