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:
Oct. 23, 2012
Filed:
Dec. 27, 2011
Gjalt Gerrit DE Jong, Leuven, BE;
Gerald D. Kelliher, London, GB;
Robert J. Harrison, Birmingham, GB;
Gjalt Gerrit De Jong, Leuven, BE;
Gerald D. Kelliher, London, GB;
Robert J. Harrison, Birmingham, GB;
Research In Motion Limited, Waterloo, CA;
Abstract
A multi-mode mobile communication device includes a processing device, a memory sub-system, a communication sub-system operable to communicate with wireless access networks, and a protocol stack stored in the memory sub-system and executed by the processing device. The protocol stack includes a first access stratum, a second access stratum, a non-access stratum and an access stratum manager. The first access stratum communicates with a first wireless access network via the communication sub-system. The second access stratum communicates with a second wireless access network via the communication sub-system. The non-access stratum communicates with a core network. The access stratum manager interfaces the non-access stratum with the first and second access strata, and is operable to activate the first access stratum to establish a communication link with the core network over the first wireless access network.