The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 12, 2013
Filed:
Apr. 26, 2007
Chris Wormald, Kitchener, CA;
Chris Wormald, Kitchener, CA;
Research In Motion Limited, Waterloo, CA;
Abstract
A system and method for determining the availability of a mobile communications device on a network based on a prediction that the device will cross a peer-defined service boundary. The service boundary may be the periphery of a region in which the received signal strength is stronger than a minimum value, or the periphery of a region in which a particular service provider's signal is dominant. When the device is about to cross the service boundary, or has crossed the boundary, a notification of a change in service is issued to at least one of the user of the device, a presence service, or another network operator. The notification may comprise a change in the presence status of the mobile communications device. The service boundary is defined using aggregated data from a plurality of mobile communications devices reporting the received signal strength at various geographic locations.