Patent ID: 7912483

Claim:
A method for use in a mobile station for facilitating the determination of Global Positioning System (GPS) location information, the method comprising the acts of: receiving, via a wireless communication network through a wireless transceiver of the mobile station, GPS navigational-type data; storing the GPS navigational-type data in memory of the mobile station; receiving, through a user interface of the mobile station, a voice call request for establishing a voice call; comparing a telephone number of the voice call request with predetermined telephone numbers of a prestored list in the memory; in response to the receiving of the voice call request and determining that the telephone number of the voice call request is in the prestored list of predetermined telephone numbers from the act of comparing, performing a GPS procedure which includes the acts of: deriving GPS assistance data based on the GPS navigational-type data that was received and stored prior to the voice call request; tuning the wireless transceiver to a GPS frequency to receive signals from a GPS system through the wireless transceiver; causing a GPS fix to be performed with the signals from the GPS system through the wireless transceiver using the GPS assistance data, for thereby obtaining GPS measurement data; retuning the wireless transceiver to signals of the wireless communication network, and causing the voice call for the voice call request to be established and maintained for the mobile station through the same wireless communication network and with the same wireless transceiver used to receive the GPS navigational-type data; and in response to the receiving of the voice call request and determining that the telephone number of the voice call request is not in the prestored list of predetermined telephone numbers from the act of comparing: refraining from performing the GPS procedure prior to establishing the voice call.