Research in Motion Corporation

M-stack Limited

Blackberry Corporation

Mark Dennis Norton

Andrew John Farnsworth

Gideon Roberts

A mobile telecommunications system comprises a network of a plurality of cells and at least one user equipment device operable to communicate in the system and to operate in a first RAT and a second RAT. The method comprises, in the user equipment device, determining whether the validity of data stored on the user equipment device will expire within an expiry period, the stored data being for use in handover of operation of the user equipment device from the first RAT to the second RAT.

Apparatus and method for querying for RAT handover system information in mobile telecommunications systems

A method and apparatus for calculating an initial transmission power in a mobile telecommunications system is disclosed, the system comprising a network of a plurality of cells and at least one user equipment device. The user equipment device receives broadcast system information, and measures a signal power. An initial transmission power is calculated in a lowest logical layer of the system defined as a protocol stack, using the received information and measured power.

Method and apparatus for calculating an initial transmission power in universal mobile telecommunications system user equipment

In accordance with the teachings described herein, systems and methods are provided for configuring signaling radio bearer information in a user equipment protocol stack. A wireless network may be used that includes a radio access network for transmitting information between a user equipment device and a core network. An instruction may be received to generate a signaling radio bearer configuration information element (IE) that includes configuration information for a pre-selected number of signaling radio bearers. The signaling radio bearer configuration IE may then be generated, while ensuring that the signaling radio bearer configuration IE includes configuration information for a required minimum number of signaling radio bearers. The signaling radio bearer configuration information element may be transmitted from the radio access network to the user equipment device for use in configuring the signaling radio bearers in the user equipment device.

Configuring signaling radio bearer information in a user equipment protocol stack

One illustrative method involves the steps of receiving a ciphering mode information message from a wireless network; identifying and processing valid radio bearer downlink ciphering activation time information in the ciphering mode information message when it is part of a security mode command message; and refraining from processing any valid radio bearer downlink ciphering activation time information in the ciphering mode information message when it is part of a message that is different from the security mode command message (i.e. when it is part of a radio network subsystem relocation procedure). The method may include the additional steps of producing valid radio bearer uplink ciphering activation time information for inclusion within a response message when the ciphering mode information message is part of the security mode command message; refraining from producing any valid radio bearer uplink ciphering activation time information when the ciphering mode information message is part of a message that is different from the security mode command message; and causing the response message to be sent to the wireless network.

Methods and apparatus for reducing airlink congestion and processing time associated with ciphering information in a wireless network

The details of an apparatus and method are disclosed for processing a message which is missing a Ciphering Activation Time for DPCH when this is required, the message being one of a number of possible messages, namely a Radio Bearer Setup message, a Radio Bearer Reconfiguration message, a Radio Bearer Release message, a Transport Channel Reconfiguration message, a Physical Channel Reconfiguration message, a Cell Update Confirm message, a URA Update Confirm message and a UTRAN Mobility Information message.

Method and apparatus for processing messages in a universal mobile telecommunications system

Methods and apparatus for use in reducing airlink congestion and processing time associated with ciphering information communicated between a wireless communication network and a mobile station are disclosed. From the standpoint of the mobile station, one illustrative method involves the steps of receiving a ciphering mode information message from a wireless network; identifying and processing valid radio bearer downlink ciphering activation time information in the ciphering mode information message when it is part of a security mode command message; and refraining from processing any valid radio bearer downlink ciphering activation time information in the ciphering mode information message when it is part of a message that is different from the security mode command message (i.e. when it is part of a radio network subsystem relocation procedure). The method may include the additional steps of producing valid radio bearer uplink ciphering activation time information for inclusion within a response message when the ciphering mode information message is part of the security mode command message; refraining from producing any valid radio bearer uplink ciphering activation time information when the ciphering mode information message is part of a message that is different from the security mode command message; and causing the response message to be sent to the wireless network.

Growing community of inventors

Bromsgrove, United Kingdom

Mark Dennis Norton