Abstract: An electronic device may contain a transceiver that transmits and receives radio-frequency signals through antenna structures. Power amplifier circuitry may amplify the radio-frequency signals that are being transmitted. An adjustable voltage supply may supply an adjustable power amplifier bias voltage to the power amplifier circuitry. The power amplifier circuitry may include multiple power amplifiers each of which may handle signals transmitted using a different cellular telephone standard. For each cellular telephone standard, multiple modulation schemes may be supported. A power detector may provide real time measurements of output power. Control circuitry can adjust the transceiver circuitry based on the measurements of output power and can adjust the adjustable power amplifier bias voltage in real time to select an optimum power amplifier bias voltage based on the current cellular telephone standard, modulation scheme, power amplifier gain state, and operating frequency in use.

Abstract: Systems and methods for transmission power management for a mobile device supporting simultaneous transmission on multiple air interfaces are disclosed. In one embodiment, the method comprises determining a transmission power level for each air interface, comparing the transmission power levels to a threshold power level, and adjusting at least one of the transmission power levels based on said comparison.

Abstract: Embodiments of the present invention may separately utilize transmit paths of a mobile transmit diversity device to initialize communication with a base station over a random access channel, particularly where the transmit paths have power amplifiers with different characteristics, e.g., different power amplification.

Abstract: A mobile base station includes a detecting unit that detects communication information concerning another cell; a switching unit that based on the detected communication information, switches a communication resource used by the mobile base station to a communication resource different from that used in the other cell; a communication resource reporting unit that reports to a mobile terminal in a cell of the mobile base station, the communication resource switched to by the switching unit; and a communication information reporting unit that reports to a base station outside the cell of the mobile base station, communication information concerning the communication resource switched to by the switching unit.

Abstract: In a multi-level power transmission scheme, an access point transmits at one power level, while repeatedly transmitting at a burst power level for short periods of time. For example, a femto cell may transmit a beacon with periodic high power bursts of short duration, while the femto cell transmit power also undergoes high power bursts aligned with the beacon bursts. In a network listen-based power control scheme, an access point listens for one or more parameters sent over-the-air by the network and then defines transmit power based on the received parameter(s). In some aspects, beacon transmit power may be set based on a defined outage radius parameter and the total received signal power on a channel. In some aspects, access point transmit power may be set based on a defined coverage parameter and the received energy associated with signals from access points of a certain type.

Abstract: Exemplary embodiments provide for optimizing operation of a radio program operated by a host process. Aspects include analyzing the contextual information received from the plurality of client devices participating in the radio program and enabling at least one feature on the host process based at least in part on the contextual information.

Abstract: A fluid sensor comprises a sensor housing (12), a sensor package (14), an actuator (16) and a switch (18). The sensor package (14) is disposed within the sensor housing (12) and includes first and second screens and at least one sensing membrane. The sensing membrane is disposed between the first and second screens (36) and is adapted to expand when exposed to a predetermined quantity of a first predetermined fluid. The actuator (16) is disposed proximate the sensor package (14) within the sensor housing (12) and moveable between a first position and a second position through an intermediate position. The switch (18) is disposed proximate the actuator (16) and is operable between closed and open positions. When the actuator (16) is in the second position at least a portion of the actuator (16) depresses the switch (18) to control an-electrical, circuit connected therewith.

Abstract: Communicating among stations in a network includes providing repeated beacon transmissions from at least some of the stations including a first station. The first station is assigned to a first level. Any stations that can reliably receive transmissions from the first station are assigned to a second level. Any stations not assigned to any of the preceding levels that can reliably receive transmissions from the preceding level are assigned to each of one or more higher levels. Timing information at each station in a given level is synchronized according to transmissions received from at least one station in the preceding level.

Abstract: A method and system to provide ad-hoc push-to-talk calls between a plurality of users in a wireless packet data telecommunications network are described. The system may include: a wireless communication network including push-to-talk (PTT) functionality, with a Session Initiation Protocol (SIP) Proxy Server; a SIP Registrar and Location Server operable to store contact addresses of active mobile devices; a Realtime Transport Protocol (RTP) Media Gateway (PTT Server) operable to function as a call endpoint for each of a plurality of mobile devices wherein the plurality of mobile devices may be segmented into membership groups, the PTT Server further operable to multicast a communication from one member of the group to the other members of the group; and an Internet Protocol (IP) network interconnecting the SIP Proxy server, the SIP Registrar and Location Server, and the PTT Server.

Abstract: A terminal for entering a coverage of a small base station, a network apparatus, and a method for operating the same are provided. The network apparatus controls small base stations, on which the terminal is camped, to operate in an active mode in which the small base station emits radio frequency (RF) signals, and controls small base stations, accessible by the terminal but not camped on by the terminal, to operate in an inactive mode in which the small base station does not emit RF signals.

Abstract: A method and apparatus for dynamically determining the scope of services for a base station operating in local mode. The method includes: receiving (206) an overlap status for at least one neighboring infrastructure device; detecting (208) that the infrastructure device has switched from a wide mode of operation to a local mode of operation; and selecting (210) one of a plurality of local mode operating states, based on the received overlap status.

Abstract: A system, method, and wireless communication device that profiles a user thereof, or a user at a second wireless communication device in communication therewith. The wireless communication device gathers user data for a user thereof, or from a user at a second wireless communication device, and either directly generates, or has generated elsewhere, a user profile, such as a personality or psychological profile, or medical diagnosis of the user, and can display the user profile to the user and/or alter the wireless communication device functionality based upon the user profile. The gathered user data can be from physical user interaction with the wireless communication device, or from other equipment resident at the wireless communication device, such as a camera and medical diagnostic devices.

Abstract: An optical scanning projection system includes a scanning light source component, a second reflecting element, a transparent element, a scanning element, a photosensitive element and a control module. The transparent element receives a main light beam emitted by the scanning light source component and reflects a part of the main light beam to be a reflected light. The reflected light is reflected by the second reflecting element, and the scanning element reflects the reflected light from the second reflecting element in a scanning manner. The photosensitive element receives the reflected light from the scanning element and outputs a sensing signal, and the control module actuates or stops actuating the scanning light source component according to the sensing signal. Therefore, when the scanning element is damaged, the control module may instantly stop actuating the scanning light source component, thereby enhancing the using safety of the optical scanning projection system.

Abstract: Methods and apparatus to collect media exposure information are described. An example apparatus includes an identifier card including a plurality of machine readable codes corresponding to one or more media stations and a metering device including a scanner to read a first one of the codes and a memory to record media exposure information identifying exposure of a user to a media station associated with the first one of the codes, the media information being stored in association with a timestamp corresponding to a time at which the first one of the codes was read.

Abstract: In accordance with aspects of the present invention, a method, apparatus and system for learning antenna weighting factors in a communication system including relay nodes. In one embodiment, an apparatus (e.g., a relay node (325)) for use with a communication system includes a first antenna (330) configured to receive a first signal including a pilot training sequence from a source node (305) and a second signal including a power-based feedback signal or a signal-to-noise based feedback signal from a destination node (350). The apparatus also includes a second antenna (335) configured to transmit at least a portion of the first signal with an antenna weighting factor (e.g., a perturbed antenna weighting factor). The apparatus further includes an antenna weighting factor module (340) coupled to the first antenna (330) and configured to iteratively adjust the antenna weighting factor in response to the second signal.

Abstract: Methods, systems, apparatus and computer program products are provided to facilitate power control in wireless communication systems. A cell that is experiencing excessive interference conditions may generate an over-the-air overload indicator indicative of interference conditions at the cell. The over-the-air overload indicator is received by one or more user equipment in a neighboring cell. In response, the user equipment determines adjustments to its transmit power that reduce and/or eliminate the interference. This determination may be carried out by the user equipment, by the serving base station, or through cooperation between the user equipment and the serving base station. This Abstract is provided for the sole purpose of complying with the Abstract requirement rules that allow a reader to quickly ascertain the disclosed subject matter. Therefore, it is to be understood that it should not be used to interpret or limit the scope or the meaning of the claims.

Abstract: Disabling wireless access point notifications is described. In some implementations, wireless access point notifications on a mobile device can be disabled when movement of the mobile device is detected. In some implementations, wireless access point notifications on a mobile device can be re-enabled when the mobile device detects that the mobile device has been stationary for a specified period of time following movement of the mobile device. In some implementations, wireless access point notifications can be disabled on a per access point basis.

Abstract: A system and method are provided for transmitting a broadband interference signal and allowing communication through the transmitted interference signal. The system includes an interference transmitter for transmitting the interference signal, the interference transmitter having a transmitter feeder and a first antenna; a radio receiver for receiving a radio signal, the radio receiver having a radio feeder and a second antenna collocated with the first antenna of the interference transmitter; a steering signal generator for introducing at least one steering signal into the interference signal at the transmit feeder; a first directional coupler for sampling a portion of the interference signal that includes at least one of the steering signals; a negative feedback loop for adjusting the amplitude and phase of the sampled portion of the interference signal; and a second directional coupler for coupling the adjusted sampled portion of the interference signal into the radio feeder.

Abstract: An apparatus and a method of realizing an antenna matching in accordance with a user's body effect and a state of a mobile device are provided. The method includes determining a state of the mobile device on a basis of a call mode and at least one of whether an external device is connected to the mobile device, whether a receiver is being used, whether a speaker is being used, and whether a proximity sensor is activated, determining an optimal Tunable Matching Network (TMN) circuit adjustment value in accordance with the determined state, and performing the antenna matching in accordance with the optimal TMN circuit adjustment value.

Abstract: There is provided a method for determining an acceptable transmission power for a second communication service making secondary usage of a spectrum assigned to a first communication service, comprising the step of determining the acceptable transmission power based on quality of a radio signal required in the first communication service, an interference level or a noise level in the first communication service, and a path loss on a communication path about one or more secondary usage node that transmits a radio signal of the second communication service.