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System and method for tracking movement of a wireless device
| Details |
Inventors: Zellner, Samuel N.; Enzmann, Mark J.; Moton, Jr., Robert T.;
Assignee: BellSouth Intellectual Property Corporation (Wilmington, DE)
Primary Examiner: Gary; Erika
Assistant Examiner: Davis; Tamica M.
Attorney, Agent or Firm: Cantor Colburn LLP
The present invention is a system and method for tracking movement of a wireless device. The tracking can be done during a wireless communication session between the wireless device and a called party. The present invention comprises a location system that can generate initial location information pinpointing an initial location of the wireless device. The location system can generate subsequent location information pinpointing subsequent locations of the wireless device. The system further comprises a location server that can determine whether the subsequent location information should be provided to the called party in accordance with a rule. Based on the subsequent location information, the movement of the wireless device can be tracked by the called party. In the preferred embodiment, the wireless device is a wireless telephone and the called party is a public safety answering point. In the preferred embodiment, the subsequent location can be generated at regular intervals, and the subsequent location can be provided to the public safety answering point when the subsequent location information indicates that the wireless device has traveled a specific distance. |
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DETAILED DESCRIPTION The present invention is a system and method for tracking the movement of a wireless device.
The present invention comprises a location system that can generate location information pinpointing the wireless device's location.
In preferred embodiments of the present invention, the location information can comprise point coordinates.
The location system can be a network-based component or it can be a handheld unit integrated in the wireless device.
A network-based location system can generate the location information using a plurality of methods.
In an exemplary embodiment of the present invention, the network-based location system can generate the location information using triangulation across cell sites.
An example of a handheld location system is a GPS receiver that is in communication with a constellation of GPS satellites.
In preferred embodiments, both network-based and handheld location systems can provide redundancy, reliability, and increased accuracy.
The present invention further comprises a location server that can receive and process the location information.
The location server comprises a memory, as an integral or separate component, for storing data that includes, among other things, the location information and identity information of the wireless device.
In preferred embodiments, the identity information comprises a unique identification number of the wireless device.
For example, the mobile identification number (MIN) of a wireless telephone could be used as the identity information.
For other wireless devices, each device's serial number or other unique attributes may be used as the identity information.
An embodiment of the present invention can enable a called party, such as a PSAP, to track the movement of a wireless telephone during a wireless communication session.
In other words, by using the present invention, the PSAP can know the location of the wireless device at all times during the wireless communication session.
In another embodiment, the called party may be a private entity that can receive the location information of the wireless device to accomplish one or more of actions
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Communications 
