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:
Feb. 21, 2012
Filed:
Oct. 15, 2010
Wen Zhao, Ottawa, CA;
Shahid R. Chaudry, Ottawa, CA;
T. L. Trevor Plestid, Ottawa, CA;
Hao Xue, Ottawa, CA;
Grace T. Y. Yeung, Ottawa, CA;
Clifford W. Yanoshewski, Ottawa, CA;
Wen Zhao, Ottawa, CA;
Shahid R. Chaudry, Ottawa, CA;
T. L. Trevor Plestid, Ottawa, CA;
Hao Xue, Ottawa, CA;
Grace T. Y. Yeung, Ottawa, CA;
Clifford W. Yanoshewski, Ottawa, CA;
Research In Motion Limited, Waterloo, Ontario, CA;
Abstract
A system and method for establishing and maintaining an 'always-on' data connection to a wireless network through the use of a back off timer and a service check timer is disclosed. The back off timer is initialized to a determined value when a connection is not established. When the timer expires, a connection attempt is made. As further connection attempts are made, the back off timer is set to ever-increasing values. When the data connection is established, the service check timer is initialized. The data connection status is determined at the expiry of the service check timer. When, at the expiry of the service check timer, the data connection is determined to be lost, the connection method is employed.