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Multiplex Communications > Duplex > Communication Over Free Space

Communication Over Free Space

Communication Over Free Space patent applications listed include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.

04/10/14 - 20140098717 - Method and apparatus for establishing radio communications on a trunked network using an inbound proxy
A method and device enables establishing radio communications on a trunked network using an inbound proxy. The method includes receiving, at a first subscriber device, a control signal from a base station on an outbound control channel of the base station. A request is then transmitted from the first subscriber...

03/20/14 - 20140078939 - Method and apparatus for power control in full-duplex wireless systems with simultaneous transmission reception
Wireless-device-to-wireless device (WD-WD) interference in a full-duplex wireless network is managed by an uplink transmit power control technique that minimizes interference experienced in downlink signals at other wireless devices in the wireless network. In one exemplary embodiment, an instantaneous antenna gain of the wireless device and a target uplink Signal-to-Interference-plus-Noise...

03/13/14 - 20140071859 - Low duty cycle network controller
Operating at least one low duty cycle (LDC) controller to maintain synchronization between the LDC controller and a plurality of LDC terminals operating over a communication network using only overhead channels of the network and conforming to the protocol and timing of said network, wherein synchronization between the LDC controller...

01/30/14 - 20140029479 - Duplex operation in a cellular communication system
A cellular communication system comprises a first base station serving at least a first user equipment. The base station comprises functionality for transmitting a base station duplex capability message to user equipments using a transmission format which is common to a plurality of duplex modes. A first user equipment comprises...

01/09/14 - 20140010122 - Reactance filter comprising suppression in the stop band and duplexer component
A reactance filter comprising suppression in the stop band comprises an input connection (1) for applying an input signal (ES), an output connection (A100) for outputting an output signal (TS), at least series resonator (11, 12, 13, 14), which is connected in a signal path (SP) between the input connection...

01/09/14 - 20140010123 - Single channel full duplex wireless communication
A single channel full duplex wireless communication system includes a processor, a transmitter, a receiver, a secondary transmission path, a combining element, a primary transmission feedback path and a secondary transmission feedback path. The transmitter transmits a transmission signal via a transmission path. The receiver receives a received signal via...

11/28/13 - 20130315107 - Systems and methods for establishing a group communication based on motion of a mobile device
Methods and systems of communication using a mobile device include communicating with other mobile devices over an initial communication channel, detecting a first motion of the mobile device moving from a first position to a second position, establishing a second communication channel with the other mobile devices in response to...

11/28/13 - 20130315108 - Systems and methods for group communication using a mobile device using motion and voice activate controls
Methods and systems of communication using a mobile device include detecting the voice of a user of the mobile device, and sending a request to a server for control of the floor in a group communication in response to the detected voice. Further methods of controlling floor access for a...

11/28/13 - 20130315109 - Outband/inband or full-duplex/half-duplex mixture backhaul signaling in relay enhanced networks
It is provided an apparatus, comprising relaying means configured to form an instance of a fourth signal based on an instance of a first signal and to form an instance of a second signal based on an instance of a third signal; second receiving means configured to receive instances of...

11/28/13 - 20130315110 - Setting up a full-duplex communication session and transitioning between half-duplex and full-duplex during a communication session within a wireless communications system
In an embodiment, an originating device sends a request, to a server, to initiate a full-duplex session with a target device. Responsive to the full-duplex request, a half-duplex session is set-up from the originating device to the target device before the full-duplex session is set-up. The target device indicates its...

11/21/13 - 20130308501 - Systems and methods for duplex communication
A communication device includes an EHF communication unit, a data signal line, and a protocol bridge element. The EHF communication unit includes a transceiver, and an antenna coupled to the transceiver. The data signal line carries a data signal conforming to a first communication protocol. The protocol bridge element is...

11/14/13 - 20130301484 - Distributed collaborative signaling in full duplex wireless transceivers
Two-way (full-duplex) wireless links in facilitating network management and improve network performance. Once aspect includes methods for network management using an overlaid network for control signaling. Another aspects include methods to facilitate practical realization and improve performance of some of the network information theoretic configurations, such as Space-Division Multiple Access...

11/14/13 - 20130301485 - Duplex operation in a cellular communication system
A cellular communication system comprises a first base station serving at least a first user equipment. The base station comprises functionality for transmitting a base station duplex capability message to user equipments using a transmission format which is common to a plurality of duplex modes. A first user equipment comprises...

11/14/13 - 20130301486 - Mobile terminal apparatus, base station apparatus and communication control method
To optimize operation of a mobile terminal apparatus when a Half-duplex FDD scheme is applied, the mobile terminal apparatus performs radio communications with a base station apparatus by HD-FDD, and when transmission timing of an uplink signal and reception timing of a downlink signal overlaps each other, selectively performs transmission...

10/24/13 - 20130279376 - Methods and apparatus for opportunistic radio resource allocation in multi-carrier communication systems
Methods and apparatus for dynamic sharing of resources such as radio frequency (RF) spectrum in a wireless system. In one embodiment, the sharing is conducted among a number of base stations (e.g., eNodeBs or Access Points (APs)), or among different radio access technologies (RATs). In one implementation, the sharing is...

10/03/13 - 20130258910 - Wireless communication device
In a wireless communication device, in a correction value calculating mode, a control unit flips switches to the “a” sides, a modulation processing unit generates a CW signal as an I channel signal, a DAC converts the digital CW signal into an analog CW signal, an LPF eliminates the high-frequency...

10/03/13 - 20130258911 - Hybrid transformer based integrated duplexer for multi-band/multi-mode radio frequency (rf) front end
An integrated duplexer based on electrical balance is described. The duplexer module includes a hybrid transformer. The hybrid transformer includes a primary coil and a secondary coil. The primary coil is coupled between an output of a power amplifier and an antenna. The secondary coil is coupled between an input...

10/03/13 - 20130258912 - Method and apparatus for bandwidth request/grant protocols in a wireless communication system
A method and apparatus for allocating bandwidth in a broadband wireless communication system is disclosed. One embodiment uses a self-correcting bandwidth request/grant protocol. The self-correcting bandwidth request/grant protocol utilizes a combination of incremental and aggregate bandwidth requests. CPEs primarily transmit incremental bandwidth requests to their associated base stations, followed by...

09/26/13 - 20130250818 - Synchronization channel design for new carrier type
Certain aspects of the present disclosure relate to synchronization channel design for a new carrier type. In certain aspects, a User Equipment (UE) may first search for legacy locations of PSS (Primary Synchronization Signal) and SSS (Secondary Synchronization Signal), and attach to a cell that transmits the legacy PSS/SSS. Then...

09/19/13 - 20130242809 - Mobile communication terminal module and mobile communication terminal
In a tunable duplexer combining a tunable filter with a canceler, calibration for optimizing passband characteristics and stop band characteristics is accelerated, and the deterioration of performance due to variations is highly accurately compensated. The tunable filter is calibrated to acquire isolation characteristics, and then coarse calibration and fine calibration...

09/19/13 - 20130242810 - Using a full duplex voice profile of a short range communication protocol to provide digital data
In an example, a processing device of an electronic device is configured to determine whether to provide digital data (other than encoded voice) of the first electronic device to a resource of a second electronic device. The processing device is configured to, in response to determining to provide the digital...

09/19/13 - 20130242811 - Radio transceiver and control method thereof
In order to reduce deterioration of reception performance even further in a case of simultaneously performing transmission and reception, a transmitting circuit (20), which forms a radio transceiver (1), outputs a transmission signal (110) to be wirelessly transmitted through an antenna (10). A duplexer (30) conducts the transmission signal (110)...

08/29/13 - 20130223294 - Methods and apparatus for operating wireless devices
A system of operating a wireless device in a wireless communication network includes selecting, by the wireless device, a preferred operating mode for use by the wireless device, the selection being made from at least a full duplex operating mode in which the wireless device can transmit and receive simultaneously...

08/15/13 - 20130208631 - Cancellation of rf second-order intermodulation distortion
The disclosed invention relates to a transceiver system configured to cancel RF second-order intermodulation distortion (IMD2) within a differential reception path. In some embodiments, the transceiver system has one or more common-mode attenuation elements that attenuate common-mode interferer signals within the differential reception path. The common-mode attenuation elements detect a...

08/08/13 - 20130201880 - Tunable duplexer architecture
A tunable radio frequency (RF) duplexer is disclosed. The tunable RF duplexer includes a first hybrid coupler, a second hybrid coupler, and an RF filter circuit. The first hybrid coupler is operable to split an RF receive input signal into first and second RF quadrature hybrid receive signals (QHRSs). The...

08/08/13 - 20130201881 - Rf transceiver with distributed filtering topology
This disclosure includes embodiments of a radio frequency (RF) transceiver having a distributed duplex filtering topology. The RF transceiver includes a power amplifier and a tunable RF duplexer. The tunable RF duplexer is configured to input an RF transmission input signal from the power amplifier, generate an RF transmission output...

08/08/13 - 20130201882 - Tunable hybrid coupler
This disclosure includes embodiments of a tunable hybrid coupler. The tunable hybrid coupler includes a first inductive element having a first inductance, a second inductive element having a second inductance and mutually coupled to the first inductive element, a first variable capacitive element having a first variable capacitance, and a...

08/01/13 - 20130194977 - Broadband system and method
A full duplex, broadband system for sparsely populated areas operating in the licensed VHF and UHF range of the electromagnetic spectrum provides service over an area of thousands of square kilometers from the base station....

07/11/13 - 20130176912 - Rf duplexing device
Radio frequency (RF) duplexing devices and methods of operating the same are disclosed. In one embodiment, an RF duplexing device includes a transmission port, a receive port, a first duplexer, and a second duplexer. The first duplexer is coupled to the transmission port and the receive port, and is configured...

07/04/13 - 20130170405 - Acoustic filter and method of acoustic filter manufacture
An acoustic filter and method of acoustic filter manufacture provides a plurality of series acoustic resonators coupled in series on a first resonator substrate, a plurality of shunt resonators on a second resonator substrate, and a support substrate. The first and second resonator substrates are mounted on the support substrate....

06/27/13 - 20130163483 - Contactless connector
A contactless connector includes a transmitter having a first transmit integrated circuit generating a first signal and a second transmit integrated circuit generating a second signal. A first pick-up antenna is adjacent the first transmit integrated circuit and conveys the first signal along a first transmission line to a first...

06/20/13 - 20130155911 - Radio transceiver with im2 mitigation
A structure and method to reduce second order intermodulation (IM2) of a receiver in a transceiver is provided. Specifically, the output of a detector in a transmit power control loop is utilized to calculate IM2 and the value is subtracted from a receive path to mitigate IM2 in a wireless...

06/20/13 - 20130155912 - Multiple-input multiple-output wireless communications with full duplex radios
An apparatus used in a full duplex multiple-input multiple-output (MIMO) wireless communications system is disclosed. In an aspect, the apparatus includes a plurality of antennas, each of which is connected to a combination of at least a TX (transmit) RF (radio frequency) chain and an RX (receive) RF chain. The...

06/20/13 - 20130155913 - Single channel full duplex wireless communication
A single channel full duplex wireless communication system includes a processor, a transmitter, a receiver, a secondary transmission path, a combining element, a primary transmission feedback path and a secondary transmission feedback path. The transmitter transmits a transmission signal via a transmission path. The receiver receives a received signal via...

06/13/13 - 20130148551 - Method and apparatus for providing signaling of redundancy
An approach is provided for efficient signaling of redundancy version information. A redundancy version signaling module detects the start of a system information radio transmission window and assigns a redundancy version sequence at the start of the transmission window....

06/06/13 - 20130142089 - Tunable bandpass filter device and method
An embodiment radio frequency MicroElectroMechanical (RF-MEMS) tunable bandpass filter includes one or more tunable resonators, each of which includes an electrically reconfigurable capacitor bank, a tuning screw, and a resonating structure. In an embodiment, the capacitor bank includes fixed value capacitors and switches to vary the capacitance of the resonator....

05/23/13 - 20130128778 - Wireless communication device capable of utilizing multiple radio access technologies
A wireless communication device is disclosed that is capable of utilizing multiple radio access technologies (RATs) in various coordinated ways so as to optimize, and enhance the versatility, of the device's communication capabilities. One or more RATs may be selected for use, either alone or in cooperation with each other,...

05/09/13 - 20130114468 - Dynamic space division duplex (sdd) wireless communications with multiple antennas using self-interference cancellation
A system and method to perform Full Duplex (FD) Space Division Duplex (SDD) communication using a Self-Interference Cancelling (SIC) precoder that applies different antenna phase shifts and amplitude scales to the transmitted signals to force them to be in the null space of the selected receive antennas. Thus, a wireless...

05/02/13 - 20130107762 - Electronic device, method and system for half duplex data transmission
An electronic device and method for half duplex data transmission in a long range keyless entry and go system, and more specifically to an RFID transponder, a corresponding read/write (R/W) unit and methods for operating the RFID transponder and the R/W-unit. There is a first coil, a second coil and...

04/11/13 - 20130089008 - Method of accessing a wireless network and a wireless device
In one embodiment, this method includes sending, from a terminal, a random access request; and receiving, at the terminal, system information from a base station via a unicast transmission in response to the random access request. The system information includes an identifier, uplink bandwidth information and downlink bandwidth information. The...

04/04/13 - 20130083703 - Tunable duplexer architecture
A tunable radio frequency (RF) duplexer and duplexing methods are disclosed. The tunable RF duplexer includes a first hybrid coupler, a second hybrid coupler, and an RF filter circuit. The first hybrid coupler is operable to split the RF transmission input signal into first and second RF quadrature hybrid transmission...

04/04/13 - 20130083704 - Half-duplex/full-duplex operation for tdd carrier aggregation
Aspects of the present disclosure relate to methods for communicating using TDD and carrier aggregation....

03/28/13 - 20130077540 - Communication device for simultaneous transmission by multiple transceivers
A communication device reduces intermodulation interference in a simultaneous transmitter using a notch diplexing arrangement. The communication device has a radio front-end module with more than one transceiver for simultaneous transmission with opposing transmit (Tx) band notch filters in series with each duplexer output, and phase rotations into and out...

03/28/13 - 20130077541 - Method and device for determining uplink control channel resources
A method and a device for determining uplink control channel resources are disclosed by the embodiments of the present invention. With the technical solutions of the embodiments of the present invention, the uplink control resources, such as the ACK/NACK and the like, can be configured semi-statically. The method is applicable...

03/14/13 - 20130064144 - Adaptive biasing to meet stringent harmonic requirements
This disclosure relates to adaptively reducing the peak power of harmonic distortions as a function of the operating conditions for transmission communications. Specifically, the bias of the amplifier is adaptively increased to reduce harmonic distortions when a small fraction of the resource blocks are active....

02/28/13 - 20130051283 - Full-duplex wireless voice broadcasting apparatus with channel-changing and interference-resistance
The present disclosure is a full-duplex wireless voice broadcasting apparatus. The apparatus is capable of channel-changing. Full-duplex (two-way) voice communication is achieved by using at least one receiving device and an emitting device. The receiving device has good mobility to be used as an emergent caller to the emitting device....

02/28/13 - 20130051284 - Carrier aggregation radio system
A carrier aggregation radio system is provided. The carrier aggregation radio system includes a transceiver having a main receiver, a diversity receiver and a carrier aggregation receiver. The carrier aggregation radio system further includes a control system adapted to command a radio front end to route diversity signals from a...

02/28/13 - 20130051285 - Packet-based input/output interface for a correlation engine
A navigation system includes a correlation engine configured to despread a received signal. The correlation engine includes a correlator configured to evaluate the received signal against a replica signal to produce a correlation result, and a packet encoder configured to produce a packet comprising a destination address, a source address,...

02/21/13 - 20130044649 - Mobile communication system and method for transmitting/receiving signal thereof
A method of transmitting a signal in a base station is provided. The method includes filtering a signal to be transmitted through a filter, power amplifying the filtered signal to generate nonlinear harmonic components corresponding to a first frequency band and a second frequency band, separating the nonlinear harmonic components...

02/14/13 - 20130039227 - Insertion loss improvement in a multi-band device
A multi-band user equipment (UE) is configured to operate in a single frequency band mode or a multiple frequency band mode. When operating in a single frequency band mode, the UE activates a bypass switch to route uplink signals of a first band around a multiplexer and reduce the insertion...

02/07/13 - 20130034027 - Method and apparatus for performing transmission and reception simultaneously in same frequency band
There are provided a method and apparatus for transmitting and receiving signals in the same frequency band at the same time. A signal is received using a dual polarization antenna, the main axis of the polarization of the reception signal is predicted by performing adaptive polarization tracking, and polarization filtering...