Abstract: Embodiments of a four-port isolation module are presented herein. In an embodiment, the isolation module includes a step-up autotransformer comprising a first and second winding that are electrically coupled in series at a center node. The first port of the isolation module is configured to couple an antenna to a first end node of the series coupled windings. The second port of the isolation module is configured to couple a balancing network to a second end node of the series coupled windings. The third port is configured to couple a transmit path to the center node. The fourth port is configured to couple a differential receive path across the first end node and the second end node. The isolation module effectively isolates the third port from the fourth port to prevent strong outbound signals received at the third port from saturating an LNA coupled to the fourth port.

Abstract: Contactless services, applications, and/or transactions can be performed between a mobile terminal and a contactless reader even when the mobile terminal battery power is found to be insufficient or if there is some other problem with the battery. Current is induced from electromagnetic (EM) fields or radio frequency (RF) signals detected near the mobile terminal such that sufficient power can be momentarily and/or temporarily used to access information from a smart card or other components within the mobile terminal, and allow user interaction via the contactless reader.

Abstract: In a communication system which can be connected to two different radio communication networks, wireless link quality information on a base station around both of terminals performing communication by using one radio communication network and according to the wireless link quality information, it is judged whether a radio terminal is to be connected to the radio communication network.

Abstract: When a mobile station to which receive diversity is applied performs measurement of best cell, the method for considering the plurality of antennas in the receive diversity is changed for each cell. The base station determines the method for considering the plurality of antennas for the receive diversity, and reports it to the mobile station as broadcast information or measurement control information.

Abstract: An access network may receive an incoming communication for an idle access terminal having a last-known location in a first service area of the access network. In response to receiving the incoming communication, the access network may determine whether the last-known location is proximate to a border between the first service area and a second service area of the access network. If so, the access network may define a border paging area encompassing one or more coverage areas within the second service area that are proximate to the last-known location. In turn, the access network may determine a representative paging-channel occupancy of the border paging area. Based on the representative paging-channel occupancy, the access network may then select a time at which to initiate a border page of the access terminal in the border paging area and then perhaps initiate the border page at the selected time.

Abstract: A mobile communication system based on images, enabling communication between a plurality of mobile devices and servers, wherein the images have associated additional properties in the nature of voice, audio, data and other information. The system further enabling the formation of one or more image networks wherein the images are stored, organized, connected and linked to each other by one or more methods inclusive of one to one connection between images, a hierarchical connection between images and or other methods of connection between images to facilitate efficient image based communication between mobile devices, stationary devices and servers based on the mobile device identification, mobile device specific profiles and user specific profiles.

Abstract: A dynamic spectrum access method for cooperative wireless devices. In one example, a method of establishing a wireless network includes scanning and analyzing a selected frequency band to detect non-cooperative signals within the selected frequency band, determining whether a waveform including one or more radio frequency (RF) carriers and a plurality of intermodulation tones (for multi-carrier waveforms) can be placed within the selected frequency band without interfering with any detected non-cooperative signals, and selecting transmit frequencies for the plurality of RF carriers responsive to obtaining a non-interfering waveform placement solution.

Abstract: A compact lightweight communication device 100 comprising a wireless headset 102 or wireless earset 104 can be provided for wireless communication, to a mobile phone or other wireless electronic communication device 106. The user friendly communication device 100 can have a pivotable boom 146 providing an arm with one and preferably multiple microphones 166 and 168, as well as one or mobile tactile buttons 156. The multifunction communication device can have acoustic audio transducer 134, such as a speaker 136 and/or an earbud 138 or earphone 140. The audio transducer can pivot on a pivot tube 142 comprising a pivotable stem to accommodate the left ear or right ear of the user. The boom and stem can pivot clockwise and/or counterclockwise, manually and independently or can be coupled to automatically pivot together.

Abstract: The present invention discloses a method and an apparatus for downlink beam forming in a TD-CDMA system. The method includes: acquiring the spatial covariance matrixes of all uplink slot interference user signals and the downlink slots in which the interference user signals locate; obtaining the interference spatial covariance matrixes of each downlink slot based on the downlink slots in which the interference user signals locate and the spatial covariance matrixes of the interference user signals; determining the beam forming weight coefficient of downlink expected user signals based on the interference spatial covariance matrixes of each downlink slot and the spatial covariance matrixes of the downlink expected user signals; implementing beam forming based on the beam forming weight coefficient of downlink expected user signals.

Abstract: Power savings and interference reduction for multimode devices (e.g., base stations and relay nodes) is disclosed. In some embodiments, power savings and interference reduction for multimode devices includes selecting a power state of the multimode device selected from a plurality of power states, in which the multimode device is in a first power state (e.g., an active or serving power state), and in which the selected power state is a second power state (e.g., a reduced power state), and transitioning the multimode device from the first power state to the second power state.

Abstract: A radio transmission system includes a MIMO reception processing unit for performing reception-side MIMO processing to output a plurality of reception modulated signals respectively corresponding to a plurality of unique paths. The system further includes an interference compensation unit for compensating inter-path interference contained in the plurality of reception modulated signals.

Abstract: A system is provided with a portable device (31) for the transmission of signals to a second device, wherein the portable device (31) is wearable on the body of a user. The portable device (31) includes at least two electrodes (3, 4) and transmitter electronics (7) for applying an electrical signal between the electrodes, in such a way that the signal between the electrodes (3, 4) is able to be coupled into the body of the user and detected by at least one electrode of the second device. The transmitter electronics are an application specific integrated circuit and thus include both means for the production of electrical signals that are dependent upon specified data, as well as means for applying the electrical signal between the electrodes. The means for generating electrical signals that are dependent upon specified data are typically digital circuits for the encoding of specified data that are to be transmitted and for the modulation of the data that are so encoded.

Abstract: A front end module includes a duplexer and a balancing network. The duplexer includes a compensation circuit and a transformer three windings having five nodes. The first node for operably coupling an antenna to the first winding; the second node operable to receive an outbound wireless signal and operably couples the first winding to the second winding; the third node operably couples the second winding to a balancing network; the fourth node operably coupled to output a first signal component corresponding to an inbound wireless signal from the third winding; and the fifth node operably coupled to output a second signal component corresponding to an inbound wireless signal from the third winding. The duplexer provides electrical isolation between the first and second signal components and the outbound wireless signal. The compensation module is operable to compensate the electrical isolation between the first and second signals and the outbound wireless signal.

Abstract: The present invention relates to a reverberation chamber (RC) comprising at least one antenna head attached at a first side of the chamber and a stirrer adapted to rotate. The RC comprises an arrangement to enable UE antennas to be placed at a location within the RC such that the stirrer is adapted to rotate to simulate a fading condition for the UE antennas in relation to the antenna heads attached at the first side and that RF connections from the antenna heads arc adapted to be connected to a cellular network, such as a closed cellular network.

Abstract: Reliability of beam selection by pre-coding is improved. A user terminal 52 selects an optimum beam (beam number ‘b’) in the next frame (t+1) based on the channel estimation value of a received pilot signal and transmits a difference value D (=b?a) between a beam number ‘a’ at the current transmission notified by a radio base station 51 and the selected beam number ‘b’ selected to be transmitted at the next transmission to the radio base station 51 as a feedback signal. The radio base station 51 previously stores the beam number ‘a’ notified at the previous transmission and combines the beam number based on the difference value D received as the received feedback signal and the previously notified beam number ‘a’ to restore the beam number ‘b’ desired by the user terminal 52. Pre-coding processing adapted to the beam number ‘b’ is performed and transmission to the user terminal 52 is executed in a state in which a beam of the appropriate beam number ‘b’ is formed.

Abstract: The present disclosure discloses a device for four-frequency transceiving of a Global System for Mobile Communication (GSM), comprising a Power Amplifier (PA), a radio frequency transceiving chip, a baseband control chip, an antenna switch, a GSM low frequency filter and a GSM high frequency filter. The antenna switch receives a control signal transmitted from the baseband control chip, and the antenna switch connects to a corresponding line according to the control signal, and transmits signals between the antenna and the connected line; the GSM low frequency filter receives the signals of a first frequency band or a second frequency band which are transmitted by the antenna switch, and passes the signals of the first frequency band or the second frequency band; the GSM high frequency filter receives the signals of a third frequency band or a fourth frequency band which are transmitted by the antenna switch, and passes the signals of the third frequency band and the fourth frequency band.

Abstract: A device for characterizing an object (100, 503, 504) is provided wherein the device comprises a first sensor element (310) and a determination unit (508), wherein the first sensor element (310) is adapted to measure a value of a physical parameter of an object (100, 503, 504), wherein the physical parameter has an impact on a signal of a contactless transmission element arranged (511, 512) on the object (503, 504), and wherein the determination unit (508) is adapted to determine an impact value based on the measured value of the physical parameter.

Abstract: In addition to other aspects disclosed, a portable base station requests assignment of a portion of a code space from a remotely located control station. The assignment is based upon the location of the portable base station. The portable base station is also capable of transmitting an identification signal using the assigned code space portion to uniquely identify the portable base station to one or more access terminals.

Abstract: A method for testing wireless devices under test (DUTs) in a wireless test station is provided. Each test station may include a test unit, a test chamber with an antenna, and a radio-frequency (RF) cable that connects the test unit to the test chamber. Reference DUTs may be used to calibrate each test station to compute a corrected linear equation based on a nominal path loss value. Over-the-air (OTA) path loss of each test station may not be directly measured. Once calibrated, the test chambers may be used during product testing to test factory DUTs to determine whether a particular factory DUT satisfies pass/fail criteria. During product testing, measured output power levels may be compared with expected output power levels computed using the corrected linear equation. The amount of error between the measured and expected output power levels will determine whether a production DUT satisfies the pass/fail criteria.

Abstract: A device for calibrating a digital communication station uses an initial ranging procedure for measuring channel parameters in a communication channel. The device comprises a communication emulator, a measuring device, and a calibrator. The communication emulator transmits a signal to the communication station which transfers the communication station into an initial ranging mode. The measuring device measures parameters of the signal transmitted by the communication station during an initial ranging cycle. From these measurements the calibrator calculates the necessary calibration adjustments to the communication station and adjusts it accordingly.