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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.

Related Categories:

Multiplex Communications


Duplex > Communication Over Free Space



Full duplex services using rts/cts
04/30/15 - 20150117269 - Systems and methods are described for point-to-point and point-to-multipoint full duplex networking In some embodiments, physical, medium access control (MAC), and routing protocols are integrated. In some embodiments, cross-layer optimization by the use of a full duplex capability table in performing routing and messaging is used to increase the channel...

Carrier aggregation using multiple antennas
03/26/15 - 20150085708 - RF front-end circuitry, which includes RF switching and duplexing circuitry, a first RF diplexer, and a second RF diplexer, is disclosed. The RF switching and duplexing circuitry operates in one of a group of RF transmit modes, such that the group of RF transmit modes includes at least one transmit...

Full duplex resource reuse enablement
03/19/15 - 20150078212 - Systems and apparatuses involve implementing methods that may include receiving, by enhanced user equipment (eUE), an assignment of Resource Blocks (RBs) from an eNodeB (eNB), wherein the eUE is configured to receive full-duplex transmissions; for each assigned RB, measuring interference caused by uplink transmissions from one or more legacy UEs;...

Medium access control method in single channel wireless network environment
03/19/15 - 20150078213 - Disclosed herein is a medium access control method in a single channel wireless network environment, which is a medium access control method of a receiving side terminal capable of communicating in a full-duplex communication scheme. The medium access control method includes: receiving a frame header of a data frame; and...

Access point for wireless lan and medium access control method thereof
03/19/15 - 20150078214 - In a medium access control method of an access point for a wireless LAN, the access point is capable of full-duplex communication, and the medium access control method includes receiving a frame header of a first data frame from a first terminal, and transmitting a second data frame to a...

Systems and methods for full duplex communication over a wireless network
03/19/15 - 20150078215 - Systems, methods, and apparatuses for full duplex communication on a wireless network are disclosed. In one aspect, one or more lists of non-effecting nodes are determined for one or more devices on the wireless network. A list of non-effecting nodes for a device identifies other network nodes or devices whose...

Rf front-end with wideband transmitter/receiver isolation
03/12/15 - 20150071132 - 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...

Transmitter apparatus of mobile device and operation method thereof
03/05/15 - 20150063174 - In a transmitter apparatus of a mobile device, a radio frequency unit has transmitting terminals for sending wireless signals of different frequency bands. Transmission filters are respectively connected to the transmitting terminals and perform a filtering process for the signal of each frequency band. A first switch has a single...

Wireless access network node having an off state
02/19/15 - 20150049649 - A wireless access network node receives a configuration for a discovery signal for transmission by the wireless access network when in an off state. The wireless access network node in the off state transmits the discovery signal according to the configuration for detection by a user equipment (UE)....

Radio transceiver for virtual full duplex communication using unused resources
02/05/15 - 20150036555 - A radio transceiver and corresponding method include a transmission unit configured to transmit an uplink signal to a base station. A receiving unit is configured to receive a relay signal, which comprises the uplink signal and a downlink signal received from the base station. An extraction unit is configured to...

Base station apparatus, mobile station apparatus, communication method, integrated circuit, and communication system
02/05/15 - 20150036556 - The present invention enables efficient transmission/reception of a signal including control information between a base station apparatus and a mobile station apparatus. To realize this, there are provided a receiver configured to receive an enhanced physical downlink control channel from the base station apparatus; a setting unit configured to be...

Transmission time interval (tti) bundling for physical downlink shared channel (pdsch)
01/29/15 - 20150029903 - Certain aspects of the present disclosure propose techniques for transmission time interval (TTI) bundling for physical downlink shared channel (PDSCH) in long term evolution (LTE). According to certain aspects a method is provided for wireless communications. The method may be performed, for example, by a user equipment (UE). The method...

Enabling full-duplex communication in legacy lte systems
01/29/15 - 20150029904 - Methods are provided for converting from half-duplex communication to full-duplex communication in a legacy wireless cellular system having a base station. A method includes providing in the base station separate transmit and receive paths for transmit signals and receive signals, respectively. The method further includes converting an uplink frequency band...

Data transmission method and apparatus for half-duplex devices
01/29/15 - 20150029905 - The present invention relates to a data transmission method for a half-duplex device in a wireless communication system. The half-duplex device transmits first uplink data to a base station in an n-th subframe. The half-duplex device determines whether to receive downlink data which is a response to the first uplink...

Full-duplex radio communication device, method and system
01/22/15 - 20150023225 - A full-duplex radio communication device, method and system are provided. A first polarized antenna in a dual-polarized antenna outputs a transmitted signal, and a second polarized antenna acquires a received signal which includes a first transmitted sub-signal that is directly coupled from the first polarized antenna. An analog domain cancellation...

Full duplex operation in a wireless network
01/15/15 - 20150016309 - Multiple wireless devices in a network perform full duplex communication in which the transmission path and receiving path are spatially separated to allow simultaneous transmission and receiving. The wireless devices can either be controlled using a centralized, or point, coordination function or a distributed coordination function. A full-duplex wireless device...

Method and device for transmitting data for half-duplex device
01/15/15 - 20150016310 - A method for transmitting data for a half-duplex device in a wireless communication system is provided. The half-duplex device receives first downlink control information from a base station in a first subframe. The half-duplex device transmits uplink data to the base station in a second subframe. The first downlink control...

Server-initiated duplex transitions
01/08/15 - 20150009865 - A server conducts a communication session between an originating device and at least one target device via a first duplex characteristic (e.g., half-duplex, full-duplex, media share, etc.). The server monitors a set of session parameters while the communication session has the first duplex characteristic. Based on the monitoring, the server...

Techniques to simultaneously transmit and receive over the same radiofrequency carrier
12/25/14 - 20140376416 - An apparatus may include an antenna and a transceiver coupled to the antenna, the transceiver including a receiver operative to receive a radio-frequency (RF) signal and a transmitter operative to transmit a RF signal. The apparatus may also include an RF echo cancellation module coupled to the receiver and the...

Carrier aggregation arrangement using triple antenna arrangement
12/25/14 - 20140376417 - Front end circuitry includes at least three antenna nodes, a first duplexer, a second duplexer, a first diplexer, transceiver circuitry, and front end switching circuitry. The transceiver circuitry is coupled to the first duplexer, the second duplexer, and the first diplexer. The front end switching circuitry is coupled between the...

System and methods for enabling simultaneous transmit and receive in the same wifi band within a device
12/04/14 - 20140355491 - Disclosed herein, one embodiment of the disclosure is directed to a system, apparatus, and method for enabling simultaneous transmit and receive in the same Wi-Fi band within a device by first obtaining a first information corresponding to a first set of signals to be transmitted wirelessly by a first antenna...

Methods and systems for full duplex wireless communications
11/27/14 - 20140348032 - A node of a full duplex wireless transmission system may include cancellation signal generation elements. The cancellation signal generation elements may extract a waveform from received signals, for example signals transmitted from the node, and use the waveform to generate a prefilter or cancellation signal to apply to further received...

System and method for medium access control enabling both full-duplex and half-duplex communications
11/27/14 - 20140348033 - Disclosed herein are systems, methods, and non-transitory computer-readable storage media for a modified MAC protocol which can facilitate communications with both full-duplex and half-duplex devices. A system configured according to the disclosed method can enable communications between an Access Point (AP) and a client in either full duplex or half...

Telecommunications apparatus and methods for half-duplex and full-duplex
10/23/14 - 20140313945 - A telecommunications system including plural base stations and plural terminal devices communicating over a radio interface having a radio frame structure including radio subframes each including plural symbols. At least one symbol in each radio subframe is used to support a physical shared channel and at least one symbol in...

Telecommunications apparatus and methods for half-duplex and full-duplex
10/02/14 - 20140293840 - A telecommunications system including plural base stations and plural terminal devices to communicate over a radio interface having a radio frame structure including radio subframes each including plural symbols. At least one symbol in each radio subframe is used to support a physical shared channel and at least one symbol...

System and method of achieving fairness in a mixture of full-duplex and half-duplex nodes in a wireless network
09/18/14 - 20140269448 - In a system having a full-duplex node, a half-duplex node and an access point, modifying a parameter such as a backoff timing such that access probabilities are adjusted for at least one of the access point, the full-duplex node and the half-duplex node. Based on channel access achieved after modifying...

Multi-carrier integration apparatus for distributed antenna system
08/21/14 - 20140233435 - A band combiner unit includes a plurality of carrier modules (CMs) each configured to be connected to a base transceiver station (BTS) or bi-directional amplifier (BDA) for corresponding ones of the carriers, wherein each of the CMs is configured to transmit downlink signals from the corresponding BTS/BDA, adjust the downlink...

Method and apparatus for managing interference in full-duplex communication
08/14/14 - 20140226538 - A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus receives an intended signal from a first wireless device operating in a full-duplex mode, receives an interfering signal from a second wireless device communicating with the first wireless device, and reduces an interference of...

System and method for controlling a wireless device
08/14/14 - 20140226539 - A method and a device are provided for controlling operation of a wireless device (200). The method (500) includes transmitting an initial signal (410) to a controller device (120) in an initial mode (505); receiving initial instructions (420) from the controller device in the initial mode, after transmitting the initial...

Duplexer, circuit structure thereof and rf transceiver apparatus comprising the duplexer
07/24/14 - 20140204806 - A duplexer is provided, which includes a first, a second and a third signal ports; a first filter and a second filter. The first filter has first, second, and third resonant circuits that have first, second and third inductors, respectively. The first, second and third inductors are mutually inductive. The...

Method and apparatus for performing uplink/downlink transmission in a flexible subframe
07/24/14 - 20140204807 - A method and apparatus for performing uplink/downlink (UL/DL) transmission in a flexible subframe are provided. The method includes receiving downlink transmission configuration information in a flexible subframe that is different from configuration information of a subframe that has a fixed duplexing direction; detecting downlink control information transmitted by a base...

Low-loss tx-to-rx isolation using electrical balance duplexer with noise cancellation
06/19/14 - 20140169231 - A circuit for a low-loss electrical balance duplexer (EBD) with noise cancellation may include an EBD circuit. The EBD circuit may be coupled to one or more output nodes of a transmit (TX) path, an antenna, and a one or more input nodes of a receive (RX) path. The EBD...

System and method for mac design of a full-duplex centralized cellular network
06/19/14 - 20140169232 - Systems, methods, and computer-readable storage media for scheduling full-duplex communications between half-duplex mobile devices and a full-duplex capable access point. The system receives, within a time window, tones from a plurality of mobile devices, the tones indicating that each device in the plurality of devices are performing one of uploading...

System and method for full-duplex mac timing modifications
06/19/14 - 20140169233 - A system, method, and computer-readable storage media for reducing monopolization of a frequency channel during full-duplex communications. The MAC layer of governing communications can be modified to reduce likelihood of monopolization by (1) in networks which are exclusively filled with full-duplex devices, configuring non-communicating devices to ignore data collisions of...

Systems and methods for interference avoidance, channel sounding, and other signaling for multi-user full duplex transmission
06/19/14 - 20140169234 - System and method embodiments are provided for transmission and reception scheduling for wireless devices in a multi-user full duplex transmission environment. The embodiments enable interference avoidance between neighboring wireless devices. The system and method also enable channel sounding. In an embodiment, a method for scheduling transmissions in a multi-user wireless...

Ship station communication apparatus and ship station communication method
06/12/14 - 20140160998 - Disclosed are a ship station communication apparatus and a ship station communication method that enable direct communication between adjacent ships as well as two-way communication between a ship station and a coast station without increasing a size of a ship station or costs. A ship station communication apparatus for communication...

Multi-transceiver wireless communication device and methods for adaptive multi-band communication
05/29/14 - 20140146716 - Embodiments of a multi-transceiver wireless communication device and methods for adaptive multi-band communication are generally described herein. In some embodiments, the multi-transceiver wireless communication device is configurable for half-duplex operation and for asymmetrical full-duplex operation on two non-interfering channels. In some embodiments, a contention-based channel access procedure may be performed...

Interfacing with low-power and lossy networks
05/08/14 - 20140126431 - In one embodiment, a client device determines when it is coupled to an IoT/LLN device to establish and enable an IP link between a headset interface on the client device and a signal interface on the IoT/LLN device. Once the IP link is established, a duplex data signal is transmitted...

Switched duplexer front end
04/24/14 - 20140112213 - The disclosed invention relates to a transceiver system having a bypass signal path that enables low power consumption. The transceiver system has a plurality of signal paths respectively having a filtering element with a stop band and with a pass band. An antenna switching module (ASM) has a plurality of...

Method and apparatus for establishing radio communications on a trunked network using an inbound proxy
04/10/14 - 20140098717 - 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...

Method and apparatus for power control in full-duplex wireless systems with simultaneous transmission reception
03/20/14 - 20140078939 - 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...

Low duty cycle network controller
03/13/14 - 20140071859 - 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...

Duplex operation in a cellular communication system
01/30/14 - 20140029479 - 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...

Reactance filter comprising suppression in the stop band and duplexer component
01/09/14 - 20140010122 - 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...

Single channel full duplex wireless communication
01/09/14 - 20140010123 - 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...

Systems and methods for establishing a group communication based on motion of a mobile device
11/28/13 - 20130315107 - 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...

Systems and methods for group communication using a mobile device using motion and voice activate controls
11/28/13 - 20130315108 - 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...

Outband/inband or full-duplex/half-duplex mixture backhaul signaling in relay enhanced networks
11/28/13 - 20130315109 - 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...

Setting up a full-duplex communication session and transitioning between half-duplex and full-duplex during a communication session within a wireless communications system
11/28/13 - 20130315110 - 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...

Systems and methods for duplex communication
11/21/13 - 20130308501 - 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...

Distributed collaborative signaling in full duplex wireless transceivers
11/14/13 - 20130301484 - 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...

Duplex operation in a cellular communication system
11/14/13 - 20130301485 - 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...

Mobile terminal apparatus, base station apparatus and communication control method
11/14/13 - 20130301486 - 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...

Methods and apparatus for opportunistic radio resource allocation in multi-carrier communication systems
10/24/13 - 20130279376 - 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...

Wireless communication device
10/03/13 - 20130258910 - 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...

Hybrid transformer based integrated duplexer for multi-band/multi-mode radio frequency (rf) front end
10/03/13 - 20130258911 - 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...

Method and apparatus for bandwidth request/grant protocols in a wireless communication system
10/03/13 - 20130258912 - 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...

Synchronization channel design for new carrier type
09/26/13 - 20130250818 - 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...

Mobile communication terminal module and mobile communication terminal
09/19/13 - 20130242809 - 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...

Using a full duplex voice profile of a short range communication protocol to provide digital data
09/19/13 - 20130242810 - 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...

Radio transceiver and control method thereof
09/19/13 - 20130242811 - 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)...

Methods and apparatus for operating wireless devices
08/29/13 - 20130223294 - 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...

Cancellation of rf second-order intermodulation distortion
08/15/13 - 20130208631 - 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...

Tunable duplexer architecture
08/08/13 - 20130201880 - 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...

Rf transceiver with distributed filtering topology
08/08/13 - 20130201881 - 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...

Tunable hybrid coupler
08/08/13 - 20130201882 - 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...

Broadband system and method
08/01/13 - 20130194977 - 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....

Rf duplexing device
07/11/13 - 20130176912 - 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...

Acoustic filter and method of acoustic filter manufacture
07/04/13 - 20130170405 - 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....

Contactless connector
06/27/13 - 20130163483 - 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...

Radio transceiver with im2 mitigation
06/20/13 - 20130155911 - 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...

Multiple-input multiple-output wireless communications with full duplex radios
06/20/13 - 20130155912 - 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...

Single channel full duplex wireless communication
06/20/13 - 20130155913 - 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...

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