Patent ID: 8779981
Filing Date: 2014-07-15
Classification: G01S,H04W

Abstract:
1. A method of determining a physical location of a device to help locate the unknown location of the device, comprising: sending a resource request from a network device; selecting three or more satellite servers, based on known locations of the satellite servers without regard to the unknown location of the device; receiving, at the three or more satellite servers, the resource request, and providing, from the at least three or more satellite servers, a response to the resource request; determining times when each of the three or more satellite servers receives the resource request; determining a physical location of the network device based on the relative known locations of the satellite servers and times when each of the satellite servers received the resource request using a triangulation technique that correlates the amount of time it took for the resource request to travel between the network device and an individual satellite server with a degree of physical distance; and selecting an additional three or more satellite servers, based on the determined physical location of the network device, for further determining the physical location of the network device.