Patent · US Active

Access stratum manager

US8295247B2 · kind B2 · utility

3Cited by

5References

20Claims

0Family size

Assignee

RESEARCH IN MOTION LIMITED · CA

Inventors

Gjalt Gerrit De Jong · Leuven, BE
Gerald D. Kelliher · London, GB
Robert J. Harrison · Sheffield, GB

Key dates

Filing date	Dec 27, 2011
Grant date	Oct 23, 2012
Priority date	—
Expiry date	Dec 27, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH04W88/06
WIPO fieldDigital communication
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.