Abstract:
A transmitter circuit (200, 400, 510) includes a power control error data generator (230), a feedforward predistortion data generation (240), feedforward adder logic (250) and the amplifier (210).
Abstract:
A method in a transmitter for data collision avoidance in an uncoordinated frequency hopping communication system is disclosed. The base station (104) first determines (304) that a first data set to be sent to a first device (105) and a second data set to be sent to a second device (107) are scheduled to be transmitted simultaneously on a first frequency of a frequency hop-set. The device then transmits (310) the first data set on the first frequency of the frequency hop-set. The base station delays (312) transmission of the second data set, and finally transmits (316) the second data set on a second frequency of a frequency hop-set.
Abstract:
The present invention provides a method for establishing direct mobile to mobile communication between cellular mobile terminals. The method includes selecting a frequency designated as a mobile communication frequency within a cellular communication system, and transmitting a communication initiation sequence at the selected frequency by a first mobile terminal. A second mobile terminal then monitors the designated mobile communication frequencies, and detects the communication initiation sequence. In at least one embodiment, selecting a frequency includes determining the region in which the first mobile terminal is operating, and selecting a mobile communication frequency for the determined region. In at least a further embodiment, the mobile communication frequency is a mobile transmission frequency for the determined region. In at least a still further embodiment, selecting a frequency includes selecting a frequency that is designated as a mobile transmit frequency in a first supported region and is designated as a mobile receive frequency in a second supported region.
Abstract:
A wireless communication device (200) is disclosed. It can include: an electronic device (210) including a display (240); a wearable device (242) including a first orientation detector (244) configured to detect a suitable display viewing orientation; and a controller (220) including a power saving module (290) coupled to the electronic device (210), the controller (220) configured to control the operations of at least the display (240) in response to a suitable orientation detection. Advantageously, the wireless communication device (200) can provides a simple, portable, compact and robust power savings feature that can actuate a display when properly orientated for viewing by a user and not actuate the display when not suitably oriented.
Abstract:
A wireless communication device (200) and method (300) adapted to prolong the useful life of an energy storage device is disclosed. In its simplest form, it can include: determining (310) a limit temperature discharge energy rate of an energy storage device; sensing (320) a temperature range threshold in proximity to the energy storage device; and adjusting (330) a discharge energy rate in response to the determined limit temperature discharge energy rate (310) and sensed temperature range threshold (320). The device (200) and method (300) can automatically and dynamically manage current drain of an energy storage device when a certain temperature range threshold is reached, to maintain the energy storage device within desired specifications and tolerances. This can prolong the useful life of the energy storage device and help to maintain a maximum recharging capacity.
Abstract:
A method and apparatus that transmits data transmission in a wireless communication device having a power supply that includes a plurality of power sources is disclosed. The method may include determining an amount of data to be transferred, determining at least one available communication mode, determining a power state of the power supply including an available amount of energy at a corresponding amount of at least one of power and current, selecting at least one communication mode based on the power state of the power supply and the amount of data to be transferred, and transferring the data using the selected at least one communication modes.
Abstract:
A portable electronic device (100), such as a mobile telephone, portable computer, personal digital assistant, or other similar device, is equipped with a virtual card application (101) configured to manage a plurality of virtual cards (106,107,108,109). Such virtual cards (106,107,108,109) are used in financial and other transactions by way of a wireless near-field transceiver (114) and a near-field communication terminal, such as a payment terminal (115). To provide a user with a seamless, less complex virtual card selection process, an arranger module (102) is configured to determine a priority associated with each of the virtual cards (106,107,108,109). The priority may be determined from location, schedule, calendar, user input, or other means. Once the priority is determined, the virtual card with the foremost priority is advanced as a top of the wallet card (111). The top of the wallet card (111), in one embodiment, is the default card for use in the transaction.
Abstract:
A dual autodiplexing antenna (300) redirects power flow (303) from an unloaded antenna to a loaded antenna, thereby improving communication performance under loaded conditions. The dual autodiplexing antenna (300) includes a first antenna (101) disposed at a first end (103) of a portable two-way communication device (100). A second antenna (102) is disposed at the distal end (104) of the portable two-way communication device (100). The first antenna (101) and second antenna (102) are coupled to a transceiver (107) by a first transmission line matching circuit (201) and a second transmission line matching circuit (202), respectively. In one embodiment, the first antenna (101) is configured to primarily operate in a first bandwidth, while the second antenna (102) is configured to primarily operate in a second bandwidth. When one of the first antenna (101) or second antenna (102) is loaded, power flow (303) is redirected to the lesser loaded antenna.
Abstract:
The present invention relates generally to wireless communications, and more particularly to a communication system operating in a licensed RF band and an unlicensed RF band. The method can include exchanging (302) traffic information (410) between a base station (102) and a mobile station (105, 107) on at least one radio channel in the unlicensed RF band (402) and exchanging (304) control information (405) that is associated with the traffic information, in the licensed radio frequency band (404).
Abstract:
The present invention provides a communication controller and a method (fig. 7) for maintaining a communication connection during a cell reselection. The communication connection is maintained by changing between a first operating mode (308), such as a packet data mode, which does not support the maintenance of a communication connection throughout a cell reselection (310), and a second operating mode, such as a circuit switched mode, which does support maintenance of a communication connection during a handover. Use of a virtual mobile switching center in the base station subsystem facilitates the conversion and routing of circuit switched data, transmitted between the mobile subscriber and the base transceiver station, to the packet data network while in a circuit switched mode.