Abstract: A system, method and apparatus to reduce or eliminate interference in a first network in the event that a failure that occurs in a second network. The method, system and apparatus provide an added level of first network interference protection in a second network environment by removing certain frequencies/channels of the first network from being utilized by the second network. In one embodiment, for example, the frequencies/channels identified by a scanner associated with the second network during the scanning process that are allocated to the first network are removed from the pool of available frequencies/channels that can be utilized by the second network, and such frequencies/channels are stored in a table.

Abstract: The present invention provides an interface between a portable communications device such as a cellular phone and the windshield display of an automobile, enabling textual or graphical data, delivered to the portable communications device to be displayed on the windshield. The interface also enables essential functions of the portable communications device to be integrated into the controls on the steering wheel.

Abstract: A system for preventing interference to a first network by a second network where the first network includes a first cell and one or more cells neighboring the first cell. The system includes a scanner for scanning the first network for identifying information associated with a neighboring cell. The network switching device associated with the first network is in communication with the scanner and receives information including a frequency allocated to the neighboring cell and transmits the information to the scanner. The system further includes a controller in communication with the scanner and a memory device coupled to the controller. The memory device includes a table having frequencies allocated for use by the any one of the neighboring cells and the controller retrieves the allocated frequencies stored in the table and bars the allocated frequencies from being used by the second network.

Abstract: An apparatus and method for generating a muting signal. The apparatus includes an audio signal detector for remotely receiving an audio signal and a processor in communication with the detector. The processor is configured to compare the received audio signal with a predetermined audio signal generated by a device and generate a muting signal when at least a component of the received audio signal matches the predetermined audio signal.

Abstract: A system and method for controlling operations in a cellular system is disclosed. A serving cell or the mobile telephone switching office (MTSO) determines that a portable wireless device operating in a serving cell needs to be handed off (a “handoff”). The position of the portable wireless device is determined. The position may be determined based on any of a variety of localization techniques, such as time difference of arrival (TDOA), angle of arrival (AOA), location pattern matching (LPM), global positioning system (GPS), or other localization techniques. A target cell is selected based on the position of the portable wireless device. Generally, the target cell is selected as the cell that is closest to the portable wireless device. Factors such as a position vector and/or a velocity vector may be assessed in selecting the target cell. Based on the target cell that is selected, the MTSO assigns the portable wireless device to the target cell and the transmission is handed off to the new cell.

Abstract: The effects of fading on communication using a mobile telephone is reduced by switching between two or more antennas which are used to provide communication between a base station and a mobile telephone in response to a synchronization signal without arcing. The synchronization signal is generated in accordance with a signal quality measured by the mobile telephone. The synchronization signal is either transmitted back to the base station, whereupon the base station determines whether or not to switch based on the transmitted downlink signal quality, or used by the mobile phone to generate an antenna switching instruction that is transmitted back to the base station, whereupon the base station switches between the antennas in accordance with the instruction. Alternatively, the synchronization signal is generated by the base station without feedback from the mobile telephone.

Abstract: A system, method and apparatus to reduce or eliminate interference in a first network in the event that a failure that occurs in a second network. The method, system and apparatus provide an added level of first network interference protection in a second network environment by removing certain frequencies/channels of the first network from being utilized by the second network. In one embodiment, for example, the frequencies/channels identified by a scanner associated with the second network during the scanning process that are allocated to the first network are removed from the pool of available frequencies/channels that can be utilized by the second network, and such frequencies/channels are stored in a table.

Abstract: Systems and methods are provided for allowing a first wireless unit and a second wireless unit to share a single communication channel including a transmit frequency and a receive frequency. The systems and methods allow for a more spectrally efficient transmission of Push To Talk mode calls over a Time Division Multiple Access system.