Patent ID: 7212157

Claim:
A method for creating acquisition assistance information for acquiring of a global positioning system (GPS) signal in an assisted global positioning system (AGPS), the method comprising the steps of: (a) receiving repeater information included in a mobile communication network of a terminal whose location is to be measured, in response to a request for the acquisition assistance information for acquiring of the GPS signal from the terminal; (b) determining a repeater delay introduced by a repeater that is present between the terminal and a base station that is synchronized with the terminal using the repeater information, wherein the repeater information is estimated through analysis of a base station signal that is observable by the terminal; and (c) creating the acquisition assistance information for acquiring of the GPS signal of the terminal based on the repeater delay; wherein a repeater delay determines a plurality of acquisition assistance information including Doppler information, pseudo distance information, Doppler search range, and pseudo distance search range; and (d) setting the repeater delay information to a previously set initial value if the repeater delay information is not available.