Patent ID: 7885314
Filing Date: 2011-02-08
Classification: G01S,H04B

Abstract:
1. A method for detecting low power Global Positioning System (“GPS”) signals from a plurality of received GPS signals, the method comprising: identifying one or more received GPS signals of the plurality of received GPS signals by a wireless device; delaying the plurality of received GPS signals; canceling less than the identified one or more received GPS signals of the plurality of received GPS signals from the delayed plurality of received GPS signals to create a resultant GPS signal; demodulating and despreading the resultant GPS signal to create a first demodulated and despread GPS signal; detecting at least one low power GPS signal relative to one of the plurality of received GPS signals from the first demodulated and despread GPS signal transmitting the detected low power GPS signal to a stationary communication device; comparing the transmitted low power GPS signal to a list of received GPS signals that the stationary communication device generated; and determining whether the wireless device has detected signals from a sufficient number of satellites or additional information to assist the wireless device to detect any remaining needed signals.