Apparatus and method for triggerable location reporting
DC CAFCFirst Claim
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1. A triggerable location-reporting apparatus for use in an environment including:
- a source of Global Positioning Satellite System (GPS) signals;
a source of a trigger signal;
a cellular base station connected through a network to a gateway;
the cellular base station being configured to expect a Reverse Control Channel signal including a Mobile Identification Number and an Electronic Serial Number, the triggerable location-reporting apparatus comprising;
a GPS receiver responsive to the GPS signals for producing GPS data when enabled;
a data selector for selecting less than all of the GPS data, to produce selected GPS data;
a cellular network transmitter coupled to the data selector for formatting and transmitting, when enabled, a Reverse Control Channel signal including the selected GPS data in the place normally occupied by the Electronic Serial Number and a Mobile Identification Number that will cause the cellular base station to send a Registration Notification Invoke signal including the selected GPS data to the gateway;
a trigger signal receiver responsive to the trigger signal for producing an enable signal;
an enable controller coupled to the GPS receiver, the cellular network transmitter, and the trigger signal receiver;
the enable controller being configured to enable the GPS receiver and the cellular network transmitter upon receipt of the enable signal from the trigger signal receiver; and
the enable controller being configured to disable the GPS receiver and the cellular network transmitter;
wherein the data selector reorders the selected GPS data.
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Abstract
A triggerable location-reporting apparatus is disclosed. A trigger signal from a page receiver triggers a GPS receiver to determine the location of the apparatus using GPS signals. The resulting GPS signal is transmitted by a telemetry transmitter, such as a cellular network telemetry transmitter.
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Citations
3 Claims
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1. A triggerable location-reporting apparatus for use in an environment including:
- a source of Global Positioning Satellite System (GPS) signals;
a source of a trigger signal;
a cellular base station connected through a network to a gateway;
the cellular base station being configured to expect a Reverse Control Channel signal including a Mobile Identification Number and an Electronic Serial Number, the triggerable location-reporting apparatus comprising;a GPS receiver responsive to the GPS signals for producing GPS data when enabled;
a data selector for selecting less than all of the GPS data, to produce selected GPS data;
a cellular network transmitter coupled to the data selector for formatting and transmitting, when enabled, a Reverse Control Channel signal including the selected GPS data in the place normally occupied by the Electronic Serial Number and a Mobile Identification Number that will cause the cellular base station to send a Registration Notification Invoke signal including the selected GPS data to the gateway;
a trigger signal receiver responsive to the trigger signal for producing an enable signal;
an enable controller coupled to the GPS receiver, the cellular network transmitter, and the trigger signal receiver;
the enable controller being configured to enable the GPS receiver and the cellular network transmitter upon receipt of the enable signal from the trigger signal receiver; and
the enable controller being configured to disable the GPS receiver and the cellular network transmitter;
wherein the data selector reorders the selected GPS data.
- a source of Global Positioning Satellite System (GPS) signals;
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2. A method for reporting a location for an object in an environment including:
- a source of Global Positioning Satellite System (GPS) signals;
a source of a trigger;
a cellular base station connected through a network to a gateway;
the cellular base station being configured to expect a Reverse Control Channel signal including a Mobile Identification Number and an Electronic Serial Number, the method comprising;receiving a trigger;
enabling, in response to the trigger, a GPS receiver responsive to the GPS signals to produce GPS data;
selecting less than all of the GPS data to produce selected GPS data;
enabling, in response to the trigger, a cellular network transmitter to format and transmit a Reverse Control Channel signal including the selected GPS data in the place normally occupied by the Electronic Serial Number and a Mobile Identification Number that will cause the cellular base station to send a Registration Notification Invoke signal including the selected GPS data to the gateway; and
disabling the GPS receiver and the cellular network transmitter;
wherein the selecting further includes reordering the selected GPS data.
- a source of Global Positioning Satellite System (GPS) signals;
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3. A triggerable location-reporting apparatus comprising:
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a location-signal generating device configured to produce a location signal including location data when enabled;
a data selecting device for selecting less than all of the location data to include in the location signal;
a telemetry transmitter coupled to the data selecting device configured to transmit the location signal when enabled; and
an enable controller configured to enable the location-signal generating device and the telemetry transmitter when it receives a trigger signal and to disable the location-signal generating device and the telemetry transmitter after the telemetry transmitter transmits the location signal;
wherein the data selecting device reorders the selected location data.
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Specification