System and Method for Dual-Mode Location Determination
First Claim
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1. A method comprising taking, by a mobile terminal, a plurality of observation measurements from a plurality of GPS signals received by a mobile terminal;
- andif the mobile terminal is in view of a cellular mobile telephone network, then transmitting, by said mobile terminal, said plurality of observation measurements, along with location area information received from said cellular mobile telephone network, to a cellular tower in said cellular mobile telephone network for delivery to a service operations center for determination of a location of the mobile terminal.
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Abstract
A geographic tracking system with minimal power and size required at the mobile terminal collects observation data at the mobile terminal, forwards the data to a processor, which calculates the position. The mobile terminal needs only to gather a few milliseconds of observation data, and to relay this observation data to the processor. In one embodiment, the observation data is communicated to the processor using either a satellite communication network or through a mobile telephone network.
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Citations
20 Claims
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1. A method comprising taking, by a mobile terminal, a plurality of observation measurements from a plurality of GPS signals received by a mobile terminal;
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if the mobile terminal is in view of a cellular mobile telephone network, then transmitting, by said mobile terminal, said plurality of observation measurements, along with location area information received from said cellular mobile telephone network, to a cellular tower in said cellular mobile telephone network for delivery to a service operations center for determination of a location of the mobile terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method, comprising
taking, by a mobile terminal, a plurality of observation measurements from a respective plurality of GPS signals received by said mobile terminal; - and
transmitting said plurality of observation measurements, along with information that is indicative of a location area, to a cellular tower in said cellular mobile telephone network for delivery to a service operations center for determination of a location of the mobile terminal, wherein said information that is indicative of a location area is based on information received from said cellular mobile telephone network. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method, comprising
transmitting a plurality of observation measurements that are taken, by a mobile terminal, from a respective plurality of GPS signals received by said mobile terminal, along with information that is indicative of a location area, to a cellular tower in said cellular mobile telephone network for delivery to a service operations center for determination of a location of the mobile terminal, wherein said information that is indicative of a location area is based on information received from said cellular mobile telephone network.
Specification