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:
Apr. 21, 2009
Filed:
Mar. 23, 2001
Dara Ung, Odenton, MD (US);
Mark Titus, Arnold, MD (US);
Johanna Wilson, Annapolis, MD (US);
Richard Smith, Annapolis, MD (US);
Dara Ung, Odenton, MD (US);
Mark Titus, Arnold, MD (US);
Johanna Wilson, Annapolis, MD (US);
Richard Smith, Annapolis, MD (US);
TeleCommunication Systems, Inc., Annapolis, MD (US);
Abstract
A technique and apparatus to provide status tracking of presence and/or location of a mobile, wireless device to a requesting entity even outside of a particular wireless system. Presence and/or location information is provided to entities outside of a particular servicing wireless network using call processing components of a mobile network (e.g., call setup procedures), and using standard mechanisms currently available to any appropriately conforming Mobile Switching Center (MSC) element. A wireless chat tracking system is implemented utilizing a change in mobile registration status to automatically notify a chat group system outside the wireless network of current status information activity regarding a relevant device, e.g., registration activity or inactivity timeout. In the wireless chat automatic status tracking system, a registration notification (REGNOT) message is either explicitly forwarded or copied to an external IP based application (e.g., to a mobile chat group system).