Methods And Apparatus For Facilitating The Determination Of GPS Location Information For A Mobile Station Without Disrupting Communications Of A Voice Call
First Claim
1. 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;
returning 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 cast 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.
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Accused Products
Abstract
Methods and apparatus for facilitating the determination of Global Positioning System (GPS) location information for a mobile station without disrupting communications of a voice call (e.g. a 911 emergency call). In one illustrative example, the mobile station causes GPS navigational-type data to be regularly or periodically received and stored in memory prior to the voice call. At some point in time, the mobile station receives a voice call request to initiate the voice call. In response, the mobile station derives GPS assistance data based on the GPS navigational-type data. The mobile station then causes a GPS fix to be performed using the GPS assistance data, to thereby obtain GPS measurement data. Thereafter, the mobile station causes the voice call to be established and maintained through the wireless network.
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Citations
25 Claims
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1. 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:
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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; returning 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 cast 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A mobile station, comprising:
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a user interface; a wireless receiver and transmitter; one or more processors coupled to the wireless receiver and transmitter; memory coupled to the one or more processors; the one or more processors being adapted to facilitate the determination of Global Positioning System (GPS) location information by being further adapted to; receive, through the wireless receiver, GPS navigational-type data via a wireless communication network; store the GPS navigational-type data in the memory; receive, through the user interface, a voice call request for establishing a voice call; compare 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 comparison, perform a GPS procedure which includes; derive GPS assistance data based on the GPS navigational-type data that was received and stored prior to the voice call request; tune the wireless receiver to a GPS frequency to receive signals from a GPS system through the wireless receiver; cause, with use of the wireless receiver, a GPS fix to be performed with the signals from the GPS system using the GPS assistance data to thereby obtain GPS measurement data based on signals from the GPS system; retune the wireless receiver to signals of the wireless communication network and cause, with use of the wireless receiver and transmitter, 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 receiver 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 comparison, refrain from performing the GPS procedure prior to establishing the voice call. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A communication system, comprising:
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a wireless communication network; a mobile station which is adapted to operate in the wireless communication network; the mobile station being further adapted to assist in the determination of Global Positioning System (GPS) location information by being operative to; receive, via the wireless communication network through a wireless transceiver of the mobile station, GPS navigational-type data; store the GPS navigational-type data in memory of the mobile station; receive, through a user interface of the mobile station, a voice call request for establishing a voice call; compare 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 comparison, perform a GPS procedure which includes; derive GPS assistance data based on the GPS navigational-type data that was received and stored prior to the voice call request; tune the wireless transceiver to a GPS frequency to receive signals from a GPS system through the wireless transceiver; cause 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; retune the wireless transceiver to signals of the wireless communication network, and cause 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 comparison;
refrain from performing the GPS procedure prior to establishing the voice call. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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Specification