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. 01, 2014
Filed:
Aug. 28, 2009
Christopher Harris Snow, Waterloo, CA;
Nazih Almalki, Waterloo, CA;
Ayman Ahmed Abdel-samad, Waterloo, CA;
Dinesh Kumar Arora, Waterloo, CA;
Christopher Harris Snow, Waterloo, CA;
Nazih Almalki, Waterloo, CA;
Ayman Ahmed Abdel-Samad, Waterloo, CA;
Dinesh Kumar Arora, Waterloo, CA;
BlackBerry Limited, Waterloo, Ontario, CA;
Abstract
An access procedure for call re-establishment is provided. In a first method, a mobile station, in at least some instances of detecting radio link failure, attempts call re-establishment on multiple cells concurrently. In a second method, a mobile station performs a first random access channel procedure when the mobile station is not aware of at least two cells with enabled call re-establishment, and performs a second random access channel procedure when the mobile station is aware of at least two cells with enabled call re-establishment.