Abstract: A communication device has a controller operatively connected to at least a first transceiver and a second transceiver, wherein the first transceiver receives signals on one or more channels within a first frequency band and the second transceiver transmits signals on one or more channels within a second frequency band, wherein the first and second frequency bands are adjacent one another so that each of the first and second frequency bands has an adjacent border and a nonadjacent border. Coexistence between the first and second transceivers is achieved by adjusting receive and/or transmit filters associated with the transceivers to create a guard band that is located more in the first frequency band if the second transceiver is using frequencies close to its adjacent border, and a guard band that is more in the second frequency band if the second transceiver is not using frequencies close to its adjacent border.

Abstract: A communication device has a controller operatively connected to at least a first transceiver and a second transceiver, wherein the first transceiver receives signals on one or more channels within a first frequency band and the second transceiver transmits signals on one or more channels within a second frequency band, wherein the first and second frequency bands are adjacent one another so that each of the first and second frequency bands has an adjacent border and a nonadjacent border. Coexistence between the first and second transceivers is achieved by adjusting receive and/or transmit filters associated with the transceivers to create a guard band that is located more in the first frequency band if the second transceiver is using frequencies close to its adjacent border, and a guard band that is more in the second frequency band if the second transceiver is not using frequencies close to its adjacent border.

Abstract: Method and apparatus for monitoring one or more telecommunications systems supported by a wireless device with respect to which the wireless device is in an idle mode while the wireless device is in a connected mode with respect to another supported system. The apparatus includes an air interface, at least two access means for providing the wireless device with access to at least two supported telecommunications systems, and a circuit having a connection to the air interface and a plurality of connections to the at least two access means.

Abstract: A mobile terminal can identify cellular control channels that can be received by the mobile terminal from a cellular system, by identifying a cellular control channel that can be received from a history list of cellular control channels that were previously received by the mobile terminal. A next cellular control channel that can be received by the mobile terminal then is scanned for, by skipping at least one cellular control channel that is adjacent the cellular control channel that was identified, based on channel allocation rules in the cellular system.

Abstract: Method and system are disclosed for preventing phase steps in digital receivers and transmitters that have a controllable gain. The method and system of the invention reduces the number of gain changes by applying hysteresis to the gain control of the receiver or transmitter. For a receiver, the hysteresis is applied with respect to the signal level received at the detector/demodulator. For a transmitter, the hysteresis is applied with respect to the transmit signal level. The hysteresis limits how frequent the gain changes occur so that only signals with amplitudes that exceed or fall below predefined thresholds will trigger a gain adjustment. Small, incremental changes in signal amplitude that lie within the range of the hysteresis will not trigger a gain adjustment.

Abstract: A mobile terminal can identify cellular control channels that can be received by the mobile terminal from a cellular system, by identifying a cellular control channel that can be received from a history list of cellular control channels that were previously received by the mobile terminal. A next cellular control channel that can be received by the mobile terminal then is scanned for, by skipping at least one cellular control channel that is adjacent the cellular control channel that was identified, based on channel allocation rules in the cellular system.

Abstract: Method and apparatus for monitoring one or more telecommunications systems supported by a wireless device with respect to which the wireless device is in an idle mode while the wireless device is in a connected mode with respect to another supported system. The apparatus includes an air interface, at least two access means for providing the wireless device with access to at least two supported telecommunications systems, and a circuit having a connection to the air interface and a plurality of connections to the at least two access means.