M-stack Limited

Research in Motion Corporation

Blackberry Corporation

Provenance Asset Group LLC

Sisvel International S.a.

Robert Harrison

Gideon Roberts

Richard George

Gjalt Gerrit De Jong

Robert J Harrison

David W Pedlar

Andrew John Farnsworth

Nicola M Funnell

Gerald D Kelliher

Richard John George

Joseph T Deu-Ngoc

Craig Swann

Patrik Olsson

A method and apparatus for processing a message in a mobile, telecommunications device. The method comprises: receiving a Cell Update Confirm (CUC) message; determining whether the device has an empty C_RNTI variable; when the device has an empty C_RNTI variable, determining whether the CUC message includes a new C_RNTI; when the CUC message includes a new C_RNTI and the CUC message would cause the device to enter a state which requires the UE to respond to the message before entering the state, carrying out at least one further step prior to entering the state.

Wireless telecommunication system

A method and apparatus for selecting cells in a mobile telecommunications system, the system comprising a network of a plurality of cells of a Universal Mobile Telecommunications Systems (UMTS) and a network of a plurality of cells of a second Radio Access Technology (RAT), the method comprising, at a user equipment device: when in UMTS mode, flagging in a neighboring cell list stored on the user equipment device information for a cell of a second RAT which is known to be unsuitable for selection. Information from the neighboring cell list information for the flagged cell may be removed, in particular for a limited period of time.

Apparatus and method for making measurements in mobile telecommunications system user equipment

Mobile user equipment for use in a cellular communications environment performs an improved cell selection on transitions out of a connected mode state. The transitions might be from one connected mode state to another or from a connected mode state to idle mode. The improvement in cell selection lies in assembling the list of candidate cells prior to cell selection. In the prior art, the list of candidate cells would usually be restricted to the serving cell or active cells supporting communication between the equipment and the network prior to transition. In embodiments of the invention, the list might comprise cells which are not the serving cell or which are outside the active set, for example a network-preferred cell or cells neighboring the serving cell or cells of the active set.

Cell selection in mobile communications

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.

Access stratum manager

Apparatus and a method for handling discard of a service data unit in universal mobile telecommunications system user equipment. Strategies for the radio resource control entity to handle discard of a service data unit by the radio link control entity are presented.

Apparatus and method for operating a communications device in a mobile communications network

A multi-mode mobile communication device may include a processing device, a memory sub-system, a communication sub-system operable to communicate with the plurality of wireless access networks, and a protocol stack stored in the memory sub-system and executed by the processing device. The protocol stack may include a first access stratum, a second access stratum, a non-access stratum and an access stratum manager. The first access stratum may communicate with a first wireless access network via the communication sub-system. The second access stratum may communicate with a second wireless access network via the communication sub-system. The non-access stratum may communicate with a core network. The access stratum manager may interface the non-access stratum with the first and second access strata, and may be operable to activate the first access stratum to establish a communication link with the core network over the first wireless access network. The access stratum manager may be further operable to maintain the communication link between the non-access stratum and the core network while transferring the communication link from the first access stratum to the second access stratum.

Apparatus, and an associated method, for identifying availability of services in a radio network of a radio communication system. A system information message is generated at the radio access network that identifies the service availability of the radio network, such as by indicating the communication services supported by the network. The system information message, once generated, is communicated upon a broadcast control channel, or other appropriate channel, and delivered to a mobile node. The mobile node detects the system information message and determines the availability of services of the radio network therefrom. Selection of whether to register with the network is made responsive to whether the network supports the communication service that the mobile node intends to initiate.

Apparatus, and associated method, for identifying radio network service availability

Mobile user equipment for use in a cellular communications environment performs an improved cell selection on transitions out of a connected mode state. The transitions might be from one connected mode state to another or from a connected mode state to idle mode. The improvement in cell selection lies in assembling the list of candidate cells prior to cell selection. In the prior art, the list of candidate cells would usually be restricted to the serving cell or active cells supporting communication between the equipment and the network prior to transition. In embodiments of the invention, the list might comprise cells which are not the serving cell or which are outside the active set, for example a network-preferred cell or cells neighbouring the serving cell or cells of the active set.

Growing community of inventors

Leuven, Belgium

Gjalt Gerrit De Jong