Blackberry Corporation

Research in Motion Corporation

Nortel Networks Corporation

Dimitrios Christos Prodanos

Muhammad Khaledul Islam

Ozgur Ekici

Jean-Philippe Paul Cormier

Jeffrey William Wirtanen

Trevor Plestid

Mark A Harris

Ozgur Ekicl

Jean-Philipe Paul Cormier

A method at a mobile device, and the mobile device, the method selecting a subset of radio access technologies available to the mobile device over which a predetermined set of services on the mobile device is available; and deactivating monitoring, or reducing a monitoring frequency, of at least one radio access technology not within the selected subset of radio access technologies.

Multi-mode mobile device based radio access network selection method for idle mode operations

The application relates to wireless network selection. The effect of wireless network selection upon operation time of the mobile device is considered in making the wireless network selection.

Method and apparatus for wireless network selection

A method and apparatus to restore always on connectivity to user equipment, the method having the steps of: monitoring whether the user equipment has transitioned to a network that supports concurrent voice and data; performing, upon the monitoring step detecting the transition, a routing area update; checking whether the user equipment was in a voice call at the time of the transition, and if yes, sending a data packet to the network.

Method and apparatus to restore always-on connectivity during network handover

A mobile device operates for communications via a first wireless network with use of a first transceiver. The device performs scanning operations with use of a second transceiver for identifying a set of cell IDs corresponding to a plurality of stations of one or more second wireless networks. The device stores the set of cell IDs in association with an ID of the first wireless network. While operating for communications with use of the second transceiver, the device maintains the first transceiver in a low power state. The device performs scanning operations with use of the second transceiver for identifying a current set of cell IDs, and compares the cell IDs of the current set with cell IDs of the stored set. The device maintains the first transceiver in the low power state or enables its operation based on the comparison.

Methods and apparatus for use in controlling wireless transceiver operation in a mobile communication device

A method, and a handheld electronic device that implements the method, for selecting a number of languages used by a text disambiguation function executed by an electronic device during a text entry session. The method comprises determining a context for the text entry session, and responsive to the determining, selecting at least some of the number of languages used by the text disambiguation function during the text entry session.

Automatic language selection for improving text accuracy

A method at a mobile device, and the mobile device, the method selecting a subset of radio access technologies available to the mobile device over which a predetermined set of services on the mobile device is available; and deselecting at least one radio access technology not within the selected subset of radio access technologies.

Multi-mode mobile device based radio access technology selection method for idle mode operations

A method and a multi-mode mobile communication device operating said method are provided. The method comprises a multi-mode mobile communication device selecting a first data connection carried over a first radio access technology (RAT) based on a first requested QoS, and the multi-mode mobile communication device selecting a second data connection over a second RAT based on a second requested QoS. The multi-mode communication device comprises a first transceiver adapted to be connected to a server using the first RAT, a second transceiver adapted to be connected to the server using the second RAT, and a processor for carrying out the method.

Method and system for radio access technology selection

A While a mobile device operates for communications in a WWAN, its WLAN transceiver portion may be maintained in a low power state. During the WWAN operation, the mobile device performs one or more scanning operations with use of a WWAN transceiver portion for identifying a current set of cell site identifications corresponding to a currently-serving base station of the WWAN and one or more neighboring base stations. The mobile device compares cell site identifications of the current set with those in a stored set, and identifies if the, number or percentage of matching cell site identifications of the current and stored sets meets or exceeds a predetermined threshold. If the predetermined threshold is met or exceeded, the mobile device exits the WLAN transceiver portion from the low power state and enables its operation for communications.

Operation commences with the cellular network infrastructure setting up a forward link and a reverse link with a cellular mobile station. The cellular network infrastructure transmits signals to the cellular mobile station on the forward link and receives signals from the cellular mobile station on the reverse link. The cellular network infrastructure monitors the quality of the reverse link. When the reverse link quality level meets a reverse link lost criteria, the cellular network infrastructure enters reverse link recovery mode of operation in which the transmit power of the forward link is increased in an attempt to recover the reverse link. During the reverse link recovery mode of operation, the cellular network infrastructure may determine that the reverse link quality meets a reverse link recovered criteria. When the reverse link quality meets the reverse link recovery criteria, the cellular network infrastructure exits the reverse link recovery mode of operation for the cellular mobile station and resumes normal power control operations. When the cellular network infrastructure determines that the reverse link recovery mode of operations fail, the cellular network infrastructure ceases forward link transmissions to the cellular mobile station and the call is dropped.

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Kanata, Canada

Dimitrios Christos Prodanos