Class / Patent application number | Description | Number of patent applications / Date published |
455630400 | Directional antenna | 63 |
20090111381 | METHOD AND APPARATUS FOR UTILIZING A DIRECTIONAL BEAM ANTENNA IN A WIRELESS TRANSMIT/RECEIVE UNIT - A method and apparatus for utilizing a switched beam directional antenna in a wireless transmit/receive unit (WTRU) is disclosed. A wireless communication system includes a serving cell, a neighbor cell and a WTRU. The WTRU is configured to generate and steer a directional beam in a plurality of directions. Once the WTRU registers with the wireless communication system, the WTRU receives messages transmitted by the serving cell. The WTRU measures signal quality of messages received in each of a plurality of predetermined directions while steering the directional beam antenna. The WTRU selects a particular one of the directions having the best signal quality. As the WTRU constantly moves, the WTRU monitors signal quality in the selected direction, and switches to another direction when the signal quality in a current direction drops below a predetermined threshold. | 04-30-2009 |
20090233556 | METHOD AND SYSTEM FOR BEAMFORMING COMMUNICATION IN HIGH THROUGHPUT WIRELESS COMMUNICATION SYSTEMS - A method and system for beamforming communication in high throughput wireless communications. Analog beamforming involves constructing analog beamforming coefficients for beamforming communication on a wireless channel. Constructing analog beamforming coefficients includes selecting a signal tap from a multi-tap wireless channel for beamforming communication, wherein the selected signal tap has a higher signal quality relative to other signals taps, and determining beamforming coefficients for the selected tap by iterative acquisition of the coefficients based on power iteration. | 09-17-2009 |
20090318088 | Wireless Communication Device and Method for Controlling Beam to be Transmitted - A controller controls the direction of a beam to be transmitted toward a correspondent wireless communication device to transmit a first wireless signal to the correspondent wireless communication device, and controls the direction of the beam within a predetermined shift from the direction of the first wireless signal, thereby transmitting a second wireless signal at a first timing before or a second timing after the timing of the control for the first wireless signal. | 12-24-2009 |
20100009635 | SYSTEM AND METHOD FOR ANTENNA TRAINING OF BEAMFORMING VECTORS HAVING REUSE OF DIRECTIONAL INFORMATION - A system and method for reusing existing directional information to configure antennas in a wireless network is disclosed. The method includes retrieving existing directional information, the existing directional information having been established in a previous antenna training session with a receiver. The method further includes performing a signal-to-noise ratio (SNR) estimation procedure comprising: transmitting an SNR estimation probe message to the receiver via a directional antenna tuned with the existing directional information, and determining whether an estimated SNR value associated with the SNR estimation probe message is equal to or greater than a threshold SNR value. The method further includes transmitting a data message to the receiver via the directional antenna tuned with the existing directional information if it is determined that the estimated SNR value is equal to or greater than the threshold SNR value. | 01-14-2010 |
20100093282 | MULTI-TRANSCEIVER ARCHITECTURE FOR ADVANCED Tx ANTENNA MONITORING AND CALIBRATION IN MIMO AND SMART ANTENNA COMMUNICATION SYSTEMS - Exemplary embodiments of system and method are provided for measuring signal amplitude, phase and/or delay offsets between multiple transmit signals fed through the transmit signal processing chains and wirelessly transmitted over the transceive antennas of separate transceiver modules, wherein transmit signal coupling between the transmit antennas of said transceiver modules' transmit signal processing chains may be used for synchronizing the transmit signals and calibrating their amplitude, phase and/or delay parameters. The exemplary embodiments further provide a front end arrangement of a wireless transceiver device which can comprise at least two independently controllable transceiver modules, each connected to an associated spatial diversity transceive antenna and comprising at least one associated transmit signal processing chain and at least one associated receive signal processing chain coupled to a common baseband processing unit. The exemplary transceiver architecture can be executed on an antenna loop between the transmit signal processing chain of a first transceiver module and the transmit signal processing chain of a second transceiver over the air interface and relies on an adaptive antenna concept which facilitates a wireless transmission of data via a plurality of wireless communication channels utilizing an array of transceive antennas, receiving feedback information via at least one of said communication channels using such antenna loop and modifying a transmission mode based on the received feedback information. | 04-15-2010 |
20100151792 | WIRELESS COMMUNICATION SYSTEM AND A WIRELESS COMMUNICATION APPARATUS - For provide a wireless communication system and a wireless communication apparatus, for enabling preferable wireless transfer, reducing the time taken for adjustment of the beam direction, even in the case where the wireless transfer is conducted between the apparatuses installed within the room, etc., according to the present invention, there is provided a wireless communication system comprising a first wireless communication apparatus and a second wireless communication apparatus. The first wireless communication apparatus comprises a first antenna, which is able to control a beam into a plural number of directions, a first estimate portion, which estimates a network quality of a wireless network with using a radio wave transmitted from the second wireless communication apparatus, a first memory portion, which memorizes a beam pattern information including information indicative of priorities of the plural number of beam directions upon basis of the network qualities estimated by the first estimate portion, and a first controller portion, which controls the first antenna, the first estimate portion and the first memory portion. And, the first controller portion controls the beam direction of the first antenna upon basis of the beam pattern information memorized in the first memory portion. | 06-17-2010 |
20110028099 | Mobile directional antenna - In one aspect, adjusting a directional antenna from a first state to a second state to improve a network operation of the directional antenna relative to a mobile node to at least partially compensate for motion of the mobile node. In another aspect, identifying a network operational characteristic; determining a desired directional antenna configuration to direct a directional antenna at least partially with respect to a first mobile node at least partially according to the network operational characteristic; and establishing a directional antenna directionality at least partially according to a desired directional antenna direction. | 02-03-2011 |
20110065391 | WIRELESS COMMUNICATION APPARATUS FOR CHANGING DIRECTIONAL PATTERN OF VARIABLE DIRECTIVITY ANTENNA ACCORDING TO VARIATIONS IN RADIO WAVE PROPAGATION ENVIROMENT - When a variable directivity antenna apparatus is controlled to form an initial composite directional pattern, RSSI is measured, and a weak electric field group or an intense electric field group is selected based on the measured RSSI. When the variable directivity antenna apparatus is controlled to form the composite directional patterns included in the selected composite directional pattern group, PER for each of the composite directional patterns is measured, and one composite directional pattern is selected from among the composite directional patterns included in the selected composite directional pattern group based on the measured PER, so that the variable directivity antenna apparatus is controlled to form the selected composite directional pattern. | 03-17-2011 |
20110076955 | TRANSMITTING DEVICE, RECEIVING DEVICE AND METHOD FOR ESTABLISHING A WIRELESS COMMUNICATION LINK - A method for establishing a wireless communication link between a first communication device having a beam antenna to be steered to different positions and a second communication device. The method includes transmitting a link request signal from the first communication device to the second communication device via the beam antenna. The link request signal includes information relating to a current position of the beam antenna. The method further includes obtaining, in case the link request signal is received in the second communication device, channel quality information representative of a current transmission path. | 03-31-2011 |
20110117855 | OPTIMIZED DIRECTIONAL ANTENNA SYSTEM - A method of operating a wireless access point having a configurable antenna system includes determining a transmission signal quality metric for a first station with the configurable antenna system in a first configuration, determining a transmission signal quality metric for a second station with the configurable antenna system in the first configuration, determining a transmission signal quality metric for a first station with the configurable antenna system in a second configuration, determining a transmission signal quality metric for a second station with the configurable antenna system in the second configuration, determining a viable set of antenna configurations for which the signal quality metric of each of the stations meets a minimum criteria and configuring the configurable antenna system to a configuration in the viable set when the wireless access point is not transmitting. | 05-19-2011 |
20110183624 | Devices and Methods for Phase Shifting a Radio Frequency (RF) Signal for a Base Station Antenna - Methods and devices for phase shifting an RF signal for a base station antenna are provided. The device includes a transmission line that has a stationary ground plane coupled to the top of a substrate and a signal line on the bottom of the substrate. The signal line has an input port and an output port. The input port receives the RF signal with a certain phase and travels across the bottom of the substrate to the output port. The RF signal has a different phase at the output port because defected ground structures etched on the stationary ground plane shift the phase of the RF signal. In addition, the device includes a movable ground plane that may cover a portion of the defected ground structures, the substrate, and the stationary ground plane such that the moveable ground plane further adjusts the phase of the RF signal. | 07-28-2011 |
20110230141 | Methods and Apparatus for Overlapping MIMO Antenna Physical Sectors - MIMO systems communicate with wireless devices. MIMO systems include directional antennas that are oriented so that the physical sectors of the antennas overlap to form areas of overlap. The areas of overlap are oriented in unique directions. Radios are selectively coupled to the portion of the antennas to communicate with the wireless devices. The physical sectors of the antennas that are selectively coupled to the radios overlap. The radios use the antennas to communicate with the wireless devices. The antennas operate as a MIMO antenna. | 09-22-2011 |
20120021690 | ANTENNA AIMING SYSTEM AND METHOD FOR BROADBAND WIRELESS ACCESS - A system and method are provided for automatically aiming an antenna to communicate with a remote broadband wireless communication device. | 01-26-2012 |
20120083217 | METHOD AND SYSTEM FOR TRANSMITTER BEAMFORMING - A system and method are provided for improving the performance of a beamforming antenna array in a wireless communications system. By observing a predetermined times of channel spatial signatures, one or more test spatial signatures are generated based on statistical analysis of the observed spatial signatures for predicting channel characteristics. A beamforming weight is derived based on the generated test spatial signatures for beamforming by an antenna subsystem of the wireless communication system. | 04-05-2012 |
20120122403 | SYSTEM AND METHOD FOR HIGHLY DIRECTIONAL ELECTRONIC IDENTIFICATION AND COMMUNICATION AND COMBAT IDENTIFICATION SYSTEM EMPLOYING THE SAME - An antenna for directional electronic communication and a directional communication system are provided. In one embodiment, the antenna includes: (1) a conductive shield having an opening at an end thereof, (2) a Luneberg lens located within said conductive shield and (3) a radio frequency signal conveyor located proximate a portion of said Luneberg lens that is distal from said opening. | 05-17-2012 |
20120122404 | RADIO COMMUNICATION DEVICE, RADIO COMMUNICATION METHOD, AND PROGRAM - A direction deciding unit calculates a plane the perpendicular of which is a directional vector from the wireless communication apparatus toward a radio station. A group deciding unit decides, as groups, antenna combinations each consisting of some ones but not all of a plurality of antennas. A distance calculating unit calculates the distances each between the coordinates of antennas projected, in parallel with the directional vector, onto the plane, and further calculates, for each group, as a group shortest-distance of the group, the shortest one of the calculation results of the distances each between the coordinates of the antennas constituting the group. An identifying unit identifies a group the group shortest-distance of which is the longest. A plurality of communication units communicate with the radio station by use of respective ones of a plurality of antennas in the group identified by the identifying unit. | 05-17-2012 |
20120164951 | Method and System for Multi-Beam Forming Based on Joint Transceiver Information - A method for multi-beam forming based on joint receiving and transmitting end information is provided. The method includes: a transmitting end decomposing a channel matrix H using a geometric mean decomposition (GMD) way to obtain a unitary matrix P; the transmitting end using the unitary matrix P as a weight matrix of GMD beam forming and executing multi-beam forming processing on an original transmission signal x. The present invention also provides a system for multi-beam forming based on joint receiving and transmitting end information, and a transmitting device and receiving device for supporting multi-beam forming based on joint receiving and transmitting end information. By using geometric mean decomposition way to decompose the channel matrix H, the sub channels corresponding to various beams obtain the equal gain. When the channel is ill-conditioned, the channel equalization will not interfere with searching the perturbation vector, thereby avoiding the performance degradation. | 06-28-2012 |
20120202431 | System and Method for Transparent Coordinated Beam-Forming - A method for reducing interference at a first user equipment (UE) includes receiving, by a second communications controller, a request to reduce interference at the first UE, the first UE being served by a first communications controller. The method also includes determining, by the second communications controller, a beam adjustment in accordance with uplink transmission measurements of the first UE and a second UE, the beam adjustment to aim a transmission to the second UE away from the second UE and towards an angle orthogonal to a first direction of the first UE relative to the second communications controller, the second UE being served by the second communications controller. The method further includes pre-adjusting, by the second communications controller, the transmission with the beam adjustment, and transmitting, by the second communications controller, the pre-adjusted transmission to the second UE. | 08-09-2012 |
20120202432 | METHOD FOR TOPOLOGY CONTROL USING SECTORIZED ANTENNAS IN WIRELESS NETWORKS - The invention concerns a method for optimizing antenna pattern assignment for a first wireless communication device forming a wireless network with at least one second wireless communication device, each of said communication device being equipped with a multi-sector antenna, an antenna pattern being a combination of said antenna sectors, said communication devices being adapted for sending a request and for receiving a response using a current antenna pattern assignment, said method comprising a step of:
| 08-09-2012 |
20120220238 | CONTROL METHOD OF RADIO COMMUNICATION SYSTEM, RADIO COMMUNICATION SYSTEM, AND RADIO COMMUNICATION APPARATUS - A communication device | 08-30-2012 |
20120220239 | CONTROL METHOD OF RADIO COMMUNICATION SYSTEM, RADIO COMMUNICATION SYSTEM, AND RADIO COMMUNICATION APPARATUS - When communication is to be performed between communication devices having a directivity control function, a plurality of antenna-setting pairs available for the communication are stored by an initial training, and the communication is started by using one of the plurality of antenna-setting pairs. When the communication quality is deteriorated, firstly, a training signal is transmitted while successively setting each one of the plurality of antenna-setting candidates determined in the initial training in a transmitting antenna of one of the communication devices ( | 08-30-2012 |
20130045690 | APPARATUS AND METHOD FOR SUPPORTING MULTI-ANTENNA TRANSMISSION IN BEAMFORMED WIRELESS COMMUNICATION SYSTEM - An apparatus and method for supporting diversity in a beamformed wireless communication system. A method for transmitting a signal in a transmit end includes determining Receive (Rx) beamforming capability information of a receive end, receiving channel information on at least one Transmit (Tx) beam pattern from the receive end, determining at least one Tx beam pattern for transmitting a signal to the receive end, in consideration of Rx beamforming support information of the receive end and the channel information on the at least one Tx beam pattern, and transmitting a signal to the receive end using the at least one Tx beam pattern for transmitting the signal to the receive end. | 02-21-2013 |
20130072124 | METHOD AND SYSTEM FOR ANALOG BEAMFORMING IN WIRELESS COMMUNICATION SYSTEMS - A method of analog beamforming in a wireless communication system is disclosed. The system has a plurality of transmit antennas and receive antennas. In one aspect, the method includes determining information representative of communication channels formed between a transmit antenna and a receive antenna of the plurality of antennas, defining a set of coefficients representing jointly the transmit and the receive beamforming coefficients, determining a beamforming cost function using the information and the set of coefficients, determining an optimized set of coefficients by exploiting the beamforming cost function, and separating the optimized set of coefficients into optimized transmit beamforming coefficients and optimized receive beamforming coefficients. | 03-21-2013 |
20130102256 | SYSTEMS AND METHODS FOR SUPPRESSING INTERFERENCE IN A SIGNAL RECEIVED BY A DEVICE HAVING TWO OR MORE ANTENNAS - Systems and methods for suppressing interference from a data signal received at a receiving device, where the receiving device has two or more receive antennas, are provided. Characteristics of a channel are estimated, the channel being a channel through which the data signal was transmitted by a transmitting device to the receiving device. A spatial correlation of interference and noise received at the two or more receive antennas of the receiving device is determined based on the estimated characteristics of the channel. The spatial correlation indicates how the interference and noise received at a particular one of the receive antennas is related to the interference and noise received at another one of the receive antennas. The spatial correlation of the interference and noise is used to suppress interference and noise from the data signal received at the receiving device. | 04-25-2013 |
20130115887 | COMMUNICATION DEVICE AND METHOD FOR GENERATING BEAMFORMING LINK - A communication device which generates a beamforming link between the communication device and an external device is provided. The communication device includes: a beamforming link generating unit which generates a first beamforming link between a first antenna of a plurality of antennas of the communication device and the external device, and which generates a second beamforming link between a second antenna of the plurality of antennas of the communication device and the external device; and a transmission unit which transmits data to the external device via each of the first beamforming link and the second beamforming link. | 05-09-2013 |
20130157578 | APPARATUS AND METHOD FOR WIRELESS COMMUNICATION VIA AT LEAST ONE OF DIRECTIONAL AND OMNI-DIRECTION ANTENNAS - Techniques for using at least one of omni-directional and directional antennas for communication are described. A station may be equipped antenna elements selectable for use as an omni-directional antenna or one or more directional antennas. The station may select the omni-directional antenna or a directional antenna for use for communication based on various factors such as, e.g., whether the location or direction of a target station for communication is known, whether control frames or data frames are being exchanged, etc. | 06-20-2013 |
20130165050 | COMMUNICATION SYSTEM FOR DETERMINING DATA TRANSMITTING SCHEME ACCORDING TO CHANNEL STATE - Disclosed is a data transmission method that may enhance a channel capacity in a wireless channel environment of a frequency band having a high directivity in which a transmission apparatus may form a transmission beam and transmit a training signal while sequentially changing a direction of the formed transmission beam, a reception apparatus may form a reception beam and receive the training signal while sequentially changing a direction of the formed reception beam, and the transmission apparatus may receive a response signal from the reception apparatus with respect to the training signal and determine to a data transmission scheme based on the received response signal. | 06-27-2013 |
20130178167 | SYSTEM AND METHOD FOR REDUCING SPECIFIC ABSORPTION RATE OF A WIRELESS COMMUNICATIONS DEVICE - Systems and methods are provided for controlling Specific Absorption Rate (SAR) levels in wireless communications devices that utilize at least two transmit (Tx) antennas. In particular, mechanisms are provided to reduce and/or maintain SAR levels to meet regulatory requirements by at least one of the following: controlling energy transmission based upon orientation of the device; controlling use of Tx antennas such that physically separate Tx antennas are utilized; and coordinating the use of Tx antennas based upon time averaged energy considerations. | 07-11-2013 |
20130189928 | MODAL COGNITIVE DIVERSITY FOR MOBILE COMMUNICATION MIMO SYSTEMS - A system and method for optimizing the performance for MIMO are provided, the system including multiple antennas, including at least one modal antenna, wherein each of the at least one modal antenna has multiple modes corresponding to multiple radiation patterns, and a processor coupled to the multiple antennas and configured to select a mode among the multiple modes to optimize signal quality for each time interval based on a CQI by considering envelop correlation effects. | 07-25-2013 |
20130210366 | ANTENNA ARRANGEMENT FOR VEHICLES FOR TRANSMITTING AND RECEIVING - An antenna arrangement for vehicle-to-vehicle communication includes at least two antenna transmitters each having a unidirectional directional diagram. The antenna transmitters are positioned in such a manner that a combination of the unidirectional directional diagrams of the antenna transmitters generates a largely omnidirectional directional diagram by way of a method for transmitting and/or receiving. | 08-15-2013 |
20130225089 | RADIO COMMUNICATION APPARATUS, SYSTEM, AND METHOD - A first radio communication apparatus includes receiving antennas, an antenna selection processing unit that selects a transmitting antenna from transmitting antennas included in a second radio communication apparatus, generates a set that includes antenna indexes each indicating each of transmitting antennas, rearranges the antenna indexes in sequence starting from an antenna index indicating the selected transmitting antenna, generates a channel matrix in which a column corresponding to the selected transmitting antenna is located at a top, and a selected-channel matrix composed of the column, multiplies an inverse matrix of the channel matrix by the selected-channel matrix to generate an evaluation matrix, rearranges the antenna indexes in the set according to values of elements in the evaluation matrix, and selects an antenna to be used according to the rearranged antenna indexes, and a transmitting unit that transmits an antenna index indicating the selected antenna to the second radio communication apparatus. | 08-29-2013 |
20130225090 | METHOD AND SYSTEM FOR ANTENNA ALIGNMENT - The present invention discloses a method and a system for antenna alignment. In the method and the system for antenna alignment in embodiments of the present invention, a strength value of an electromagnetic wave signal is determined in a receiving direction of an antenna to be aligned, and is displayed, so that a user performs an antenna alignment operation according to a display value, thereby improving precision in antenna alignment, and reducing difficulty and a cost in antenna alignment. | 08-29-2013 |
20130231058 | BEAMFORMING - A method implemented in a wireless communications system is disclosed. The method includes determining a first candidate set of transmit beams for a wireless transmitter having a transmit antenna array and a second candidate set of receive beams for a wireless receiver having a receive antenna array, transmitting, from the wireless transmitter, each transmit beam in the first candidate set, and applying, at the wireless receiver, receive beams in the second candidate set to receive said each transmit beam in the first candidate set. Other methods, systems, and apparatuses also are disclosed. | 09-05-2013 |
20130231059 | BEAMFORMING - A method implemented in a wireless communications system is disclosed. The method includes: transmitting, from a wireless transmitter having a transmit antenna array, a first signal on each of a plurality of different transmit beams in transmitter (TX) sector level sweep (SLS), receiving, at a wireless receiver having a receive antenna array, the first signal, and determining, at the wireless receiver, quality of the first signal. Other methods, systems, and apparatuses also are disclosed. | 09-05-2013 |
20130295852 | METHOD AND APPARATUS FOR BEAMFORMING IN WIRELESS COMMUNICATION SYSTEM - A method and an apparatus for operating a transmitter in a millimeter wave communication system is provided. In the method, information of a common and/or control channel is mapped to a dedicated frequency region of a dedicated Radio Frequency (RF) path. Data is mapped to a common frequency region for a common RF path. | 11-07-2013 |
20130309976 | Geometrical closed loop line of sight (LOS) multiple-input-multiple-output (MIMO) - Geometrical closed loop line of sight (LOS) multiple-input-multiple-output (MIMO). Singular value decomposition (SVD) processing for a LOS communication channel into respective channel matrices, and appropriate processing of signals within transmitter and/or receiver communication devices operate to support very high data throughput, including approaching or converging to the Shannon limit channel capacity (e.g., bits/sec/Hz). Certain communication systems operate with multi-antenna communication devices, and sometimes, the optimal spacing between those respective antennae cannot be achieved. Appropriate processing can recover most, if not all, of any performance degradation as may be incurred by a deviation from the perfectly optimal spacing between those respective antennae. In addition, any deleterious effects of phase noise among the antennae may be mitigated by driving the antennae using a common or singular local oscillator, or tracking the communication channel (e.g., channel estimation, tracking, etc.) and updating the respective SVD channel matrices based upon such phase noise. | 11-21-2013 |
20140018004 | METHODS AND ARRANGEMENTS FOR BEAM REFINEMENT IN A WIRELESS NETWORK - In some embodiments a beamforming method is disclosed. The method can include transmitting a beam having a channel defined by a maximum ratio transmission vector (MRT) and receiving a first response from a receiver, where the first response has first information such as parameters related to the transmitted beam. Using the parameters and the initial MRT, another directional transmission can be made. A similar process can determine a maximum combining ratio for a receiver. Set up communications between the transmitter and the receiver can be reduced by omitting data from transmission that can be acquired by other means such as from memory or calculations. Additional embodiments are also disclosed. | 01-16-2014 |
20140018005 | DEVICE, SYSTEM AND METHOD OF WIRELESS COMMUNICATION VIA MULTIPLE ANTENNA ASSEMBLIES - Some demonstrative embodiments include devices, systems and/or methods of wireless communication via multiple antenna assemblies. For example, a device may include a wireless communication unit to transmit and receive signals via one or more quasi-omnidirectional antenna assemblies, wherein the wireless communication unit is to transmit, via each quasi-omnidirectional antenna assembly, a plurality of first transmissions, to receive, in response to the first transmissions, a plurality of second transmissions from another device via one or more of the quasi-omnidirectional antenna assemblies, and, based on the second transmissions, to select at least one selected transmit antenna assembly for transmitting to the other device and a selected receive antenna assembly for receiving transmissions from the other device. Other embodiments are described and claimed. | 01-16-2014 |
20140057570 | SYSTEMS AND METHODS FOR OPTIMIZING COMMUNICATION PERFORMANCE - Various embodiments of a millimeter-wave wireless point-to-point or point-to-multipoint communication system which maintains a stable communication link even in the face of problems such as vibration or other mechanical disturbance to transceivers in the system or radio interference to the transmission beam produced by a transmitter and received by a receiver. The system comprises a transmitter, a receiver, a high-gain antenna, and allied equipment as described. In various embodiments, a beam is mechanically or electronically redirected to improve system performance. In various embodiments, the modulation schemes or coding schemes of the transmission are altered to improve system performance. | 02-27-2014 |
20140080420 | METHOD, DEVICE, AND SYSTEM FOR TRANSMITTING CHANNEL INFORMATION - The present invention discloses a method, device, and system for transmitting channel information, pertaining to the field of radio communication. The method for obtaining channel information includes: transmitting, by a beamformer, a request for obtaining channel information to a beamformee within the duration of a current first TXOP; receiving a null feedback frame transmitted by the beamformee within the duration of the current first TXOP; within the validity period of the channel information, if the beamformer obtains a second TXOP, transmitting, within the second TXOP, a channel information indication frame to request the channel information, and receiving the channel information transmitted by the beamformee. The system includes a beamformer and a beamformee. The present invention saves the signaling resources of the beamformer and reduces the power consumption of the beamformee. | 03-20-2014 |
20140154992 | Explicit and Implicit Hybrid Beamforming Channel Sounding - A channel sounding scheme is presented herein that relies on a combination of a first channel sounding procedure and a second channel sounding procedure. The first channel sounding technique is one that involves an exchange of dedicated channel sounding related signals to determine channel conditions between the first wireless communication device and the particular second wireless communication device. The second channel sounding technique is one in which channel conditions are implicitly discovered from any signals transmitted by the particular second wireless communication device to the first wireless communication device. A first wireless communication device computes updates to steering matrix information used for beamforming one or more signal streams to a particular second wireless communication device based on a combination of the first channel sounding technique and the second channel sounding technique. | 06-05-2014 |
20140179235 | METHOD FOR REDUCING POWER CONSUMPTION AND COMMUNICATIONS APPARATUS UTILIZING THE SAME - A communications apparatus having multiple antennas for supporting MIMO communications includes a processor coupled to at least a radio transceiver, a baseband processing element and the antennas. The processor at least includes a first processor logic unit for determining a value of an indicator according to a plurality of signals received from an air interface via the radio transceiver and a second processor logic unit for dynamically adjusting a number of antennas utilized in following receiving operations based on the value of the indicator. The signals are transmitted by a peer communications apparatus via one or more transmitting antennas and the indicator is capable of reflecting qualities of the signals. | 06-26-2014 |
20140187168 | METHOD AND APPARATUS FOR FAST BEAM-LINK CONSTRUCTION IN MOBILE COMMUNICATION SYSTEM - A method of forming a beam-link by a Base Station (BS) in a wireless communication system using a beamforming scheme includes determining at least one downlink beams to be used for downlink transmission and/or reception, transmitting a reference signal to a Mobile Station via the at least one downlink beam, receiving the reference signal via an uplink beam from the Mobile station, and updating the at least one downlink beam to increase a Signal-to-Noise Ratio (SNR). Accordingly, a beam-link using an initial beam-link between the BS and the MS and adaptive beamforming can be rapidly constructed in a high frequency band BDMA cellular system. | 07-03-2014 |
20140220902 | RADIO COMMUNICATION DEVICES AND METHODS FOR CONTROLLING A RADIO COMMUNICATION DEVICE - A radio communication device may be provided. The radio communication device may include: a receiver configured to receive data using an antenna on a first carrier and a second carrier; an operation mode determination circuit configured to determine an active antenna operation mode based on information of the first carrier and information of the second carrier; and an antenna controller configured to control the antenna to operate in the determined active antenna operation mode. | 08-07-2014 |
20140242914 | METHOD AND APPARATUS FOR CALIBRATING MULTIPLE ANTENNA ARRAYS - A method includes transmitting a calibration command to multiple antenna arrays. Each antenna array includes a plurality of antenna elements, a plurality of transmitter and receiver channels, and a calibration circuit comprising a calibration receiver and a calibration transmitter. The antenna arrays are connected to one another. The method also includes, for each pair of connected antenna arrays, calibrating the calibration circuits of the connected antenna arrays based on time delay differences and phase delay differences between the calibration receivers and the calibration transmitters in the pair of connected antenna arrays. In addition, the method includes calibrating the antenna elements of each antenna array using the calibrated calibration circuits. | 08-28-2014 |
20140295768 | ELECTRONIC DEVICE CAPABLE OF ELIMINATING WIRELESS SIGNAL INTERFERENCE - An electronic device eliminating wireless signal interference includes a first radio unit, a second radio unit, and a quadrature coupler. The first radio unit includes a first antenna and a first transceiver. The first transceiver is configured to output first wireless signals via a first port. The second radio unit operates on a same frequency of the first radio unit, and includes a second antenna and a second transceiver. The second transceiver is configured to output second wireless signals via a second port. The quadrature coupler is connected to the first and the second ports, configured to separate the first wireless signals from the second wireless signals, and further to cause a first radiation field pattern of the first wireless signals to be orthogonal with a second radiation field pattern of the second wireless signals. | 10-02-2014 |
20140364064 | COMPUTING SYSTEM WITH COORDINATION MECHANISM AND METHOD OF OPERATION THEREOF - A computing system includes: an inter-device interface configured to communicate a coordination report for representing a receiver signal associated with an interference-aware receiver capable of recognizing an interference signal from an interference node device and included in the receiver signal; a communication unit, coupled to the inter-device interface, configured to: generate a rate coordination profile based on the coordination report for coordinating the interference signal with the interference node device, and generate a beam-forming mechanism based on the rate coordination profile for communicating a serving signal coordinated with the interference signal | 12-11-2014 |
20150017920 | Transceiving Module, Antenna, Base Station and Signal Receiving Method - Embodiments of the present invention relate to the field of wireless communication technologies, and provide a transceiving module, an antenna, a base station and a signal receiving method, which are capable of implementing receiving of four dual-band signals and improving uplink network performance of a base station. The transceiving module includes a combining-splitting network, a set of transceiving unit arrays and a signal processing unit that are connected to each other in sequence, and further includes a combining network setting with a connection point connected to another transceiving module, a co-element filter unit separately connected to the combining-splitting network and the combining network, and a pair of receiving units connected to the signal processing unit, where the pair of receiving units in the transceiving module is disposed with a connection point connected to the another transceiving module. The embodiments of the present invention apply to the field of communication. | 01-15-2015 |
20150105025 | METHOD AND APPARATUS FOR THREE-DIMENSIONAL BEAMFORMING - Embodiments of the disclosure provide methods and apparatuses for three-dimensional beamforming. The method may comprise: mapping vertical virtual antenna ports to physical antenna ports based on vertical reference signals to obtain mapped vertical reference signals; transmitting the mapped vertical reference signals to a user equipment; receiving a tilting indicator from the user equipment, wherein the tilting indicator is obtained based on the mapped vertical reference signals at the user equipment; determining a tilting vector based on the received tilting indicator, wherein the tilting vector indicates adjustment for traffic data in antenna vertical tilting; and adjusting traffic data with the tilting vector. | 04-16-2015 |
20150111502 | DEVICE, SYSTEM AND METHOD OF WIRELESS COMMUNICATION VIA ONE OR MORE ANTENNA ASSEMBLIES - Some demonstrative embodiments include devices, systems and/or methods of wireless communication via multiple antenna assemblies. For example, a device may include a wireless communication unit to transmit and receive signals via one or more quasi-omnidirectional antenna assemblies, wherein the wireless communication unit is to transmit, via each quasi-omnidirectional antenna assembly, a plurality of first transmissions, to receive, in response to the first transmissions, a plurality of second transmissions from another device via one or more of the quasi-omnidirectional antenna assemblies, and, based on the second transmissions, to select at least one selected transmit antenna assembly for transmitting to the other device and a selected receive antenna assembly for receiving transmissions from the other device. Other embodiments are described and claimed. | 04-23-2015 |
20150311969 | MODAL ANTENNA BASED COMMUNICATION NETWORK AND METHODS FOR OPTIMIZATION THEREOF - A communication network is optimized using modal antenna techniques, wherein a plurality of communication nodes are synchronized with each other along with mobile and fixed wireless communication devices which comprise the user base. With one or more of the communication nodes and wireless communication devices including at least one respective modal antenna, the network is adapted for dynamic optimization of communication links amongst the wireless users. Node to user throughput, node to node throughput, as well as interference characteristics among the nodes and wireless users are each optimized as a network system to increase communication system network capacity and reliability. The multiple radiation patterns provided by the modal antennas provide a parametric for network-level synchronization to improve communication system performance. | 10-29-2015 |
20150318904 | Wireless Network with Coordinated Sectors to Mitigate Interference - A wireless network with coordinated sectors to mitigate interference. An example of the network includes a plurality of antennas each having a directional gain pattern, at least one antenna located at as first access point and at least one antenna located at a second access point spaced apart from the first access point, at least one antenna at the first access point oriented with maximum gain in a first direction that defines as first sector and at least one antenna at the second access point oriented with maximum gain in a second direction that defines a second sector, and at least one transceiver coupled to the antennas In sequence any antennas oriented in the first sector separately from any antennas oriented in the second sector. | 11-05-2015 |
20150349862 | METHOD, DEVICE, AND SYSTEM FOR TRANSMITTING CHANNEL INFORMATION - The present invention discloses a method, device, and system for transmitting channel information, pertaining to the field of radio communication. The method for obtaining channel information includes: transmitting, by a beamformer, a request for obtaining channel information to a beamformee within the duration of a current first TXOP; receiving a null feedback frame transmitted by the beamformee within the duration of the current first TXOP; within the validity period of the channel information, if the beamformer obtains a second TXOP, transmitting, within the second TXOP, a channel information indication frame to request the channel information, and receiving the channel information transmitted by the beamformee. The system includes a beamformer and a beamformee. The present invention saves the signaling resources of the beamformer and reduces the power consumption of the beamformee. | 12-03-2015 |
20150365141 | A METHOD FOR ALIGNMENT OF MULTI-BEAM ANTENNAS IN A NON LINE-OF-SIGHT SCENARIO - The present invention relates to a method for alignment of a first node with at least one secondary node in a wireless communication network. The first node includes first node antenna beams with corresponding designated pointing angles. For each such beam, the method comprises the steps of, for each secondary node: directing a first node antenna beam in its designated pointing angle; using a secondary node antenna beam where objects can generate signal reflections/diffractions; and detecting at least one signal property of reflected/diffracted signals. The method further comprises the steps: exchanging information between the nodes, regarding beam angles resulting in said signal property exceeding a corresponding threshold level; and selecting a first node beam angle and a secondary node beam angle from the beam angles for communication between the first node and each secondary node. | 12-17-2015 |
20150372722 | DOPPLER FREQUENCY SHIFT COMPENSATION FOR WIRELESS COMMUNICATION - Technologies and implementations for Doppler frequency shift compensation are generally disclosed. | 12-24-2015 |
20160080044 | DEVICE, SYSTEM AND METHOD OF WIRELESS COMMUNICATION VIA MULTIPLE ANTENNA ASSEMBLIES - Some demonstrative embodiments include devices, systems and/or methods of wireless communication via multiple antenna assemblies. For example, a device may include a wireless communication unit to transmit and receive signals via one or more quasi-omnidirectional antenna assemblies, wherein the wireless communication unit is to transmit, via each quasi-omnidirectional antenna assembly, a plurality of first transmissions, to receive, in response to the first transmissions, a plurality of second transmissions from another device via one or more of the quasi-omnidirectional antenna assemblies, and, based on the second transmissions, to select at least one selected transmit antenna assembly for transmitting to the other device and a selected receive antenna assembly for receiving transmissions from the other device. Other embodiments are described and claimed. | 03-17-2016 |
20160094252 | WIRELESS-CHANNEL CHARACTERIZATION AND EQUALIZATION - Various embodiments are described that relate to signal distortion for delay and attenuation. A transmission antenna can transmit a baseline signal to a reception antenna and then transmit a test signal to the reception antenna. The baseline signal and test signal can be processed to determine undesirable attenuation and delay coefficients. These coefficients can be transmitted back from the reception antenna to the transmission antenna. Based on these coefficients, a determination can be made on how to modify a signal of interest such that the signal of interest arrives from the transmission antenna to the reception antenna absent the undesirable attenuation and delay coefficients. The transmission antenna can transmit the modified signal of interest such that it arrives at the reception antenna absent the undesirable delay and attenuation coefficients. | 03-31-2016 |
20160112111 | WIRELESS COMMUNICATION WITH INTERFERENCE MITIGATION - In one implementation, a wireless communication terminal includes a primary antenna array and a first controller configured to steer a main beam of the primary antenna array in a desired direction. The wireless communication terminal also includes an auxiliary antenna array and a second controller configured to control complex weights to be applied by at least some antenna elements of the auxiliary antenna array to corresponding variants of a second signal received by the at least some auxiliary antenna elements. Furthermore, the wireless communication terminal includes at least one signal combiner configured to combine variants of the second signal received from auxiliary antenna elements into an interfering signal that models interference from a co-located wireless communication terminal and subtract the interfering signal from variants of the first signal received from antenna elements of the principal antenna array to produce an interference mitigated signal. | 04-21-2016 |
20160156391 | APPARATUS AND METHOD FOR CONTROLLING ORIENTATION | 06-02-2016 |
20160173227 | POINT-TO-POINT RADIO SYSTEM, COMMUNICATION APPARATUS, AND COMMUNICATION CONTROL METHOD | 06-16-2016 |
20160182163 | METHOD FOR DETERMINING AN OPTIMUM SET OF TRANSMITTING/RECEIVING BEAMS AND A COMMUNICATIONS DEVICE UTILIZING THE SAME | 06-23-2016 |
20160191176 | COMMUNICATION UNIT AND METHOD OF ANTENNA ARRAY CALIBRATION - A method for calibrating an antenna array coupled to a plurality of transmitters via a plurality of couplers and a plurality of antenna element feeds is described. The method comprises, at a communication unit: selecting and coupling at least one coupler to a calibration receiver in a feedback path in the communication unit; scaling at least one first signal by at least one first beamform weight; applying the scaled at least one first signal to a first transmitter of the plurality of transmitters and routing the scaled at least one first signal via the selected at least one coupler to the calibration receiver; generating a reference signal by selecting and scaling the at least one first signal by at least one second beamform weight substantially equal to the at least one first beamform weight; comparing the at least one first signal scaled with the at least one first beamform weight with the at least one first signal reference signal scaled by the at least one second beamform weight to determine at least one first parameter result; storing the at least one first parameter result of the comparison associated with the first transmitter; repeating for subsequent transmitters the steps of selecting and coupling a further coupler, scaling, applying at least one further signal to a further transmitter of the plurality of transmitters, generating a further reference signal, comparing and storing at least one further parameter result until the plurality of couplers have been selected; and determining at least one calibration correction coefficient from a plurality of parameter results for applying to at least one second signal input to at least one transmitter of the plurality of transmitters coupled to the antenna array to substantially equalise a transfer function of a plurality of transmit paths to antenna element feeds for the at least one second signal having beamform weights applied thereto. | 06-30-2016 |
20180026686 | Microwave Radio Transmitter and Receiver for Polarization Misalignment Compensation | 01-25-2018 |