INFORMATION TRANSFER IN A MULTI-MODE GLOBAL POSITIONING SYSTEM USED WITH WIRELESS NETWORKS
First Claim
1. A geolocation system, comprising:
- a geolocation server, wherein the geolocation server receives at least one signal from at least one GPS satellite; and
a wireless communications device, comprising a GPS receiver section, the GPS receiver being selectively switchable between a standalone mode and at least one other mode for determining a geolocation of the wireless communications device, and the wireless communication device can selectively send the determined geolocation of the wireless communication device to the geolocation server, wherein the wireless communications device periodically transmits a frequency reference message to the GPS receiver.
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Accused Products
Abstract
The present invention discloses a GPS system that can operate in different modes depending on the network facilities and bandwidth available, the GPS information that can be acquired, or user or system requirements. The modes comprise standalone mode, where a mobile communications device computes the position of the device, an autonomous mode, where the mobile communications device transmits the computed position to a server, application, or PSAP in a communications network, a network aided mode, where the network aides the mobile communications device in determining the position of the device, a network based mode, and other modes.
43 Citations
20 Claims
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1. A geolocation system, comprising:
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a geolocation server, wherein the geolocation server receives at least one signal from at least one GPS satellite; and
a wireless communications device, comprising a GPS receiver section, the GPS receiver being selectively switchable between a standalone mode and at least one other mode for determining a geolocation of the wireless communications device, and the wireless communication device can selectively send the determined geolocation of the wireless communication device to the geolocation server, wherein the wireless communications device periodically transmits a frequency reference message to the GPS receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for determining the geolocation of a device, comprising:
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receiving at least one signal from at least one GPS satellite at the device, wherein the device can be selectively switched between a standalone mode and at least one other mode;
periodically transmitting a frequency reference message to the device; and
determining the geolocation of the device using the at least one signal and the frequency reference message.
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Specification