Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2005-08-31
2008-07-15
Le, Danh C (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S456100, C455S457000, C701S214000, C701S300000, C707S793000
Reexamination Certificate
active
07400892
ABSTRACT:
Embodiments of the present invention are related to a method and apparatus for determining whether each mobile station in a pre-defined group of two or more mobile stations is in compliance with acceptable location criteria. A group tracking server receives mobile station tracking information including a mobile station identifier for each mobile station. The server also receives current location coordinates corresponding to the mobile station identifier for each mobile station from a locator device. A relative location of each mobile station relative to one or more predetermined targets the calculated. The acceptable location criteria for each mobile station relative to the one or more pre-determined targets is retrieved from a location criteria database. The calculated relative location of each mobile station relative to the one or more pre-determined targets compared with the retrieved location criteria to determine whether the calculated relative location is in compliance with the acceptable location criteria. A subscriber is then notified if the calculated relative location is in compliance with the acceptable location criteria.
REFERENCES:
patent: 2002/0086676 (2002-07-01), Hendrey et al.
patent: 2002/0107008 (2002-08-01), Hendrey et al.
patent: 2003/0013456 (2003-01-01), Bates et al.
patent: 2003/0078042 (2003-04-01), Miriyala et al.
patent: 2003/0100326 (2003-05-01), Grube et al.
Banks Diane
Bansal Pradeep K.
Blewett Charles Douglas
Rock Timothy A.
Rosen Kenneth H.
AT&T Corp.
Le Danh C
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