Including Directive Communication System Patents (Class 342/367)
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Patent number: 8026849Abstract: A system (105) determines a power level for transmitting to a neighboring node in a wireless network. The system (105) receives a message indicating a three-dimensional position and orientation of the neighboring node and a type of directional antenna of the neighboring node that transmitted the message. The system (105) determines the power level for transmitting to the neighboring node based on the three-dimensional position and orientation of the neighboring node and the type of the directional antenna.Type: GrantFiled: January 23, 2007Date of Patent: September 27, 2011Assignee: Raytheon BBN Technologies Corp.Inventors: Jason Keith Redi, Eric Gustav Brett, William Dugald Watson, Jr.
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Patent number: 8013790Abstract: 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.Type: GrantFiled: December 2, 2010Date of Patent: September 6, 2011Assignee: Sony Deutschland GmbHInventors: Masahiro Uno, Zhaocheng Wang
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Patent number: 8009096Abstract: A method, system and apparatus for determining at least one relative characteristic of a transmit diversity transmitter based on at least one quality indicator based on signals received on the plurality of antennas. In some embodiments of the invention, the relative characteristic may be a relative power or amplitude ratio and/or a phase difference between the signals transmitted on the different antennas.Type: GrantFiled: February 16, 2010Date of Patent: August 30, 2011Assignee: Magnolia Broadband Inc.Inventors: Haim Harel, Kenneth Kludt, Yair Karmi
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Patent number: 8009507Abstract: A system for an adaptable aperture planar array for maintaining source resolution is provided. The system includes a first nested array defining a first aperture responsive to a first range of frequencies. The first aperture is sized based on an angle between the array and the source, and includes a first subset of sensor elements. The system includes a second nested array defining a second aperture responsive to a second range of frequencies that is less than the first range of frequencies. The second aperture is sized based on the angle between the array and the source, and includes a second subset of sensor elements. The first aperture and second aperture change in size as the angle changes, which results in a change in the sensor elements within the first subset and the second subset to maintain the source resolution for the array.Type: GrantFiled: January 9, 2009Date of Patent: August 30, 2011Assignee: The Boeing CompanyInventor: James R. Underbrink
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Patent number: 8010062Abstract: A multiple frequency antenna array includes a first antenna circuit and a second antenna circuit. The first antenna circuit has a first radiation pattern and is tuned to a first carrier frequency. The first antenna circuit transmits a first representation of a radio frequency (RF) signal at the first carrier frequency, where the first carrier frequency corresponds to a carrier frequency of the RF signal and a first frequency offset. The second antenna circuit has a second radiation pattern and is tuned to a second carrier frequency. The second antenna circuit transmits a second representation of the RF signal at the second carrier frequency, where the second carrier frequency corresponds to the carrier frequency of the RF signal and a second frequency offset.Type: GrantFiled: November 6, 2009Date of Patent: August 30, 2011Assignee: Broadcom CorporationInventor: Ahmadreza (Reza) Rofougaran
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Patent number: 7996148Abstract: A method for obtaining directions to fixed location such as a restaurant includes using a telephone to call the restaurant, and providing a prompt to the caller during the call to push a button on the telephone to download GPS location of the restaurant. The GPS information is transferred from the telephone to a navigation module in a vehicle which displays a map showing the route to the restaurant.Type: GrantFiled: May 10, 2007Date of Patent: August 9, 2011Inventor: Avi Bergman
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Patent number: 7978134Abstract: A system and method of training antennas for two devices having heterogeneous antenna configurations in a wireless network is disclosed. The method includes communicating one or more estimation training sequences between two devices via a phased array antenna and a switched array antenna, wherein a beamforming vector of the phased array antenna is switched between phase vectors within a set of weight vectors while the switched array antenna is switched within a plurality of antenna sectors. The method further includes tuning at least one of the phase array and switched array antennas with an antenna parameter selected based at least in part on the one or more estimation training sequences. The method further includes communicating data messages via at least one of the phase array and switched array antennas so tuned.Type: GrantFiled: August 11, 2008Date of Patent: July 12, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Huaning Niu, Pengfei Xia, Chiu Ngo
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Publication number: 20110148703Abstract: 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 and a radio frequency absorptive material located on an inner surface 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.Type: ApplicationFiled: March 1, 2011Publication date: June 23, 2011Inventors: Ralph E. Hayles, JR., Thomas H. O'Mara
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ANTENNA ADJUSTMENT APPARATUS, ANTENNA ADJUSTMENT METHOD AND TANGIBLE MACHINE-READABLE MEDIUM THEREOF
Publication number: 20110122025Abstract: An antenna adjustment apparatus, an antenna adjustment method and a tangible machine-readable medium thereof are provided. The antenna adjustment apparatus is electrically connected to a directional antenna and is configured to generate a signal loss value according to an environmental coordinate parameter, an antenna coordinate parameter, an excitation parameter set and an antenna structure parameter. The antenna adjustment apparatus is configured to determine whether the signal loss value meets a communication quality condition and set an excitation parameter set, which meets the communication quality condition, as an available excitation parameter set so that the antenna radiation pattern of the directional antenna may be adjusted according to the available excitation parameter set.Type: ApplicationFiled: February 5, 2010Publication date: May 26, 2011Applicant: Institute for Information IndustryInventors: Ting-Chieh TU, Yi-Heng FENG -
Patent number: 7929914Abstract: A mote network having and/or using one or more directional antennas.Type: GrantFiled: March 30, 2007Date of Patent: April 19, 2011Assignee: The Invention Science Fund I, LLCInventor: Clarence T. Tegreene
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Patent number: 7929918Abstract: Systems and methods of training antennas for two devices equipped with phased array antennas in a wireless network are disclosed. In one embodiment, the methods include transmitting a plurality of estimation training sequences from a transmit phased array antenna to a receive phased array antenna, wherein a length of at least one of the plurality of training sequences is adapted to a number of antenna elements at one of the transmit and receive phased array antennas. The methods further include transmitting data to the receive phased array antenna via the transmit phased array antenna tuned with a transmit beamforming vector (BV) selected based at least in part on the plurality of estimation training sequences.Type: GrantFiled: August 11, 2008Date of Patent: April 19, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Huaning Niu, Pengfei Xia, Chiu Ngo
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Patent number: 7929981Abstract: A method for sending and receiving a virtual “shout” between two mobile terminals is provided. The method includes the steps of detecting mobile terminals in a near area of the sending terminal and presenting the detected terminals on a display on the sending terminal. At least one of the detected terminals may be selected and a “shout” is sent to the selected mobile terminal. The “shout” may be received in the selected mobile terminal and the user a user of the selected receiving terminal may be alerted as indication of a received “shout”.Type: GrantFiled: April 17, 2008Date of Patent: April 19, 2011Assignee: Sony Ericsson Mobile Communications ABInventor: Troed Sangberg
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Patent number: 7916080Abstract: Systems and methods for providing network access to mobile devices that travel with a vehicle, such as a train, a bus, a boat, etc. along or adjacent to a relatively fixed path that may extend over a large geographic area. Mobile devices access the network through stationary access points arranged along or adjacent to the path and communicate with a communication network. The communication network may be arranged as an asynchronous transfer mode (ATM) local area network emulation (LANE) network. One of the mobile devices may be a mobile access point which can couple other mobile devices to the network and record authentication information of other mobile devices so that fast transitions can be made from one stationary access point to another as the vehicle moves along the path.Type: GrantFiled: August 16, 2007Date of Patent: March 29, 2011Assignee: WiFi Rail, Inc.Inventor: Cooper G. Lee
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Patent number: 7916081Abstract: A beamforming method comprises transmitting a training sequence from a transmitter array employing a set of beamforming vectors from a beamforming codebook. A receive array employs a combining codebook to acquire channel state information from the received transmissions, and estimates a preferred beamforming vector and a preferred combining vector. At least the preferred beamforming vector (and, optionally, the preferred combining vector) is transmitted back to the transmitter array.Type: GrantFiled: December 19, 2007Date of Patent: March 29, 2011Assignee: QUALCOMM IncorporatedInventor: Ismail Lakkis
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Patent number: 7911329Abstract: A system and method for adaptive motion sensing with location determination is described. In one embodiment, the adaptive motion sensor is based on vibration sensor readings and can identify different states of motions based on modifiable parameters.Type: GrantFiled: January 6, 2009Date of Patent: March 22, 2011Assignee: SkyBitz, Inc.Inventors: Rich Battista, Jianming Yuan
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Patent number: 7898476Abstract: In one embodiment, a system for controlling the direction of an antenna beam includes a location identifier, an orientation sensor, and an antenna beam controller. The location identifier determines a transmit antenna location indicating the location of a transmit antenna, where the transmit antenna produces an antenna beam. The orientation sensor determines a transmit antenna orientation indicating the orientation of the transmit antenna. The antenna beam: accesses target data describing a receive antenna of a target, the target data comprising a location of the receive antenna relative to the transmit antenna; calculates a deviation value from the transmit antenna location, the transmit antenna orientation, and the target data; and adjusts the direction of the antenna beam to reduce the deviation value.Type: GrantFiled: January 22, 2008Date of Patent: March 1, 2011Assignee: Raytheon CompanyInventors: Richard W. Nichols, Gilbert M. Shows, Joel C. Roper
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Patent number: 7893873Abstract: Embodiments disclosed herein relate to methods and systems for providing improved position-location (e.g., time-of-arrival) measurement and enhanced position location in wireless communication systems. In an embodiment, an access point may replace information (e.g., data) transmission by a “known” transmission (or “reference transmission”) at a predetermined time known to access terminals in the corresponding sectors. The access terminals may use the received reference transmission to perform a position-location measurement, and report back the measured information. The access point may also send a reference transmission on demand, e.g., in response to a request from an access terminal in need for a location-based service.Type: GrantFiled: December 20, 2005Date of Patent: February 22, 2011Assignee: QUALCOMM IncorporatedInventors: Peter John Black, Matthew S. Grob
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Patent number: 7876265Abstract: Embodiments disclosed herein relate to methods and systems for providing improved position-location (e.g., time-of-arrival) measurement and enhanced position location in wireless communication systems. In an embodiment, an access point may replace information (e.g., data) transmission by a “known” transmission (or “reference transmission”) at a predetermined time known to access terminals in the corresponding sectors. The access terminals may use the received reference transmission to perform a position-location measurement, and report back the measured information. The access point may also send a reference transmission on demand, e.g., in response to a request from an access terminal in need for a location-based service.Type: GrantFiled: January 28, 2009Date of Patent: January 25, 2011Assignee: QUALCOMM IncorporatedInventors: Peter John Black, Matthew S. Grob
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Patent number: 7859458Abstract: 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.Type: GrantFiled: June 1, 2009Date of Patent: December 28, 2010Assignee: Sony Deutschland GmbHInventors: Masahiro Uno, Zhaocheng Wang
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Patent number: 7852265Abstract: A wireless area network communication system comprising at least one phased array antenna frame, a phased array antenna circuit connected to the at least one phased array antenna frame wherein said phased array circuit and said at least one phased array antenna frame are adapted to transmit and receive wireless area network compliant signals from or to wireless area network devices.Type: GrantFiled: April 30, 2008Date of Patent: December 14, 2010Inventors: Alberto Milano, Hillel Weinstein
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Publication number: 20100309049Abstract: A system for facilitating wireless communication in an apparatus that may be triggered by the realization of data for wireless transmission. A determination may then be made as to whether the data is intended for transmission to a certain recipient (e.g., a specific apparatus) or in a specific direction. The data may then be transmitted using directional wireless communication if a wireless transport is determined to be usable for transmitting the data in a direction based on the previous determination. If directional wireless communication is not available, the data may be transmitted via omnidirectional communication.Type: ApplicationFiled: June 5, 2009Publication date: December 9, 2010Applicant: NOKIA CORPORATIONInventors: Jukka REUNAMÄKI, Arto Tapio PALIN
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Publication number: 20100302014Abstract: A method for locating a target wireless device is disclosed. At least one directional antenna is swept through a field of view at each of a plurality of sensing locations. A position is determined for each of the plurality of sensing locations. During the sweep at each of the plurality of sensing locations, a set of signal strength data for the target wireless device and a set of bearing information are collected. A plurality of lines of bearing are determined, one from each of the plurality of sensing locations to the target wireless device, based on the determined position, the collected set of signal strength data, and bearing information for each of the plurality of sensing locations. A target location of the target wireless device is determined based on an intersection of at least two lines of bearing from the plurality of lines of bearing.Type: ApplicationFiled: May 26, 2009Publication date: December 2, 2010Inventors: Richard Michael Gloo, Jacob Michael Baker, Alexander James Williams, Jason S. Lashure, Robert James Durham, Nicholas Lawrence Owens
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Publication number: 20100277368Abstract: Multi-pattern transmission of wireless frames. A digital device contains a transmitter feeding an electronically steerable antenna system where the radiation pattern produced by the antenna system may be selected. Different antenna radiation patterns are used in transmitting a first portion of a wireless frame and a second portion of a wireless frame in a wireless digital network. In one embodiment, a first portion of a wireless frame is transmitted using a wide radiation pattern while the second portion of the frame is transmitted using a second radiation pattern. Switching among radiation patterns in the electronically steerable antenna system may be accomplished by switching between antenna types, such as an omnidirectional antenna for the wide pattern, and beam-steered or sectorized antennas for the second radiation pattern. Beam-forming and/or phasing approaches may also be used. The first and second portions of the frame may be transmitted at different power levels.Type: ApplicationFiled: April 29, 2009Publication date: November 4, 2010Applicant: Aruba Networks, Inc.Inventor: Subburajan Ponnuswamy
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Patent number: 7809337Abstract: An apparatus and method for adjusting transmission phasing in a point-to-point communication link is disclosed. The relative phases of the transmissions from each antenna are adjusted before transmission to give optimum gain when received by two or more antenna elements and a signal combining element. The signal includes a data component, consisting of a subset of the subcarriers modulated with the input data, which is common to transmissions from all antenna elements; and a phase reference component consisting of a subset of the subcarriers that are modulated with a predetermined phase. The signal combining element is operable to receive the components and extract phase information.Type: GrantFiled: February 26, 2007Date of Patent: October 5, 2010Assignee: Motorola, Inc.Inventor: Peter N. Strong
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Publication number: 20100248672Abstract: Beams are used to communicate in a wireless network including mobile and stationary receivers. The network operates according to the IEEE 802.11p in wireless access to vehicular environments (WAVE). A direction from the mobile transceiver to the stationary receiver is predicted using geographic information available to the mobile transceiver. A set of signals are received in the mobile transceiver from the stationary transceiver, wherein the signals are received by an array of antennas, and wherein the signals are received using a set of beams, and wherein each beam is approximately directed at the stationary receiver. A signal-to-noise ratio (SNR) is measured for each beam, and the beam with an optimal SNR is selected as an optimal beam for communicating data between the mobile transceiver and the stationary transceiver.Type: ApplicationFiled: March 30, 2009Publication date: September 30, 2010Inventors: Philip V. Orlik, Raymond Yim, Ramesh Annavajjala, Jinyun Zhang
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Publication number: 20100245173Abstract: A wireless sensor network system includes a plurality of sensor devices each having a non-directional antenna, and an information gathering apparatus having an adaptive array antenna and gathering information detected by the plurality of sensor devices. Each sensor device includes a transmitter to transmit a transmission request for connecting to the information gathering apparatus. The information gathering apparatus includes, a first directivity-changing section that, when the information gathering apparatus receives a transmission request from an unconnected sensor device, performs one of changing the adaptive array antenna to be non-directional, and changing a directivity of the adaptive array antenna, and that receives a signal transmitted from one of the unconnected sensor device and the unconnected sensor device and a connected sensor device, and a second directivity-changing section to change the directivity in accordance with a reception state of the signal.Type: ApplicationFiled: March 29, 2010Publication date: September 30, 2010Applicant: FUJITSU LIMITEDInventor: Atsushi Honda
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Publication number: 20100231451Abstract: An antenna device has a linear antenna element; a passive element section provided in proximity to the antenna element; and a control section that controls the passive element section. The passive element section has a linear line laid in parallel to the antenna element; and an impedance adjustment section that adjusts impedance of the passive element section. A compact antenna device capable of switching its directivity by means of electrical operation can be provided.Type: ApplicationFiled: October 23, 2007Publication date: September 16, 2010Applicant: PANASONIC CORPORATIONInventors: Wataru Noguchi, Hiroyuki Yurugi, Sotaro Shinkai, Akihiko Shiotsuki, Toshihiro Ezaki
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Publication number: 20100231373Abstract: A method, system and computer program product for providing notification to the driver of a vehicle when the vehicle's speed exceeds the speed limit within a speed control zone. A vehicular speed control (VSC) utility retrieves information indicating the speed limit of the speed control zone from an information signal detected by a radio receiver. The receiver is electrically coupled to the speed sensor circuitry of the vehicle to track the vehicle's velocity. The VSC utility determines whether to activate a speed notification alarm by comparing the vehicle's velocity with the zone's speed limit. When the vehicle's velocity exceeds the speed limit of the speed control zone, the VSC utility triggers the alarm and alerts the driver of the excessive speed with an audible/visible notification. The VSC utility may re-trigger the alarm if the driver continues to exceed the speed limit while driving within close proximity of the speed control zone.Type: ApplicationFiled: March 13, 2009Publication date: September 16, 2010Inventor: Greg Romp
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Publication number: 20100156721Abstract: Embodiments of an indoor millimeter-wave wireless personal area network and method are described. In some embodiments, a directional antenna (103) and a diffusive reflector (106) are used to increase throughput and reduce multipath components.Type: ApplicationFiled: June 16, 2006Publication date: June 24, 2010Inventors: Siavash M. Alamouti, Alexander Alexandrovich Maltsev, Vadim Sergeyevich Sergeyev, Alexander Alexandrovich Maltsev, JR.
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Patent number: 7737890Abstract: The present invention relates to a method for transmitting signals in a wireless communication system, in which signals are transmitted from a first communication device to a second communication device, said signals being transmitted in consecutive frames, each frame having a preamble section including preamble information, at least one of said first and said second communication devices having a narrow beam antenna which is adapted to be steered to different positions, each of said different positions corresponding to one of a number of different transmissions paths from said to said second communication device, including the steps of transmitting and receiving a first preamble section including preamble information enabling the estimation of a channel quality of a current transmission path, while said narrow beam antenna is in a current position corresponding to said current transmission path, steering said narrow beam antenna from said current position to a different position corresponding to a candidateType: GrantFiled: February 10, 2009Date of Patent: June 15, 2010Assignee: Sony Deutschland GmbHInventors: Zhaocheng Wang, Masahiro Uno, Volker Wullich
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Patent number: 7725080Abstract: A mote network having and/or using one or more directional antennas.Type: GrantFiled: November 29, 2007Date of Patent: May 25, 2010Assignee: The Invention Science Fund I, LLCInventor: Clarence T. Tegreene
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Patent number: 7706842Abstract: A mote network having and/or using one or more directional antennas.Type: GrantFiled: November 26, 2007Date of Patent: April 27, 2010Assignee: Searete, LLCInventor: Clarence T. Tegreene
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Patent number: 7663545Abstract: A method, system and apparatus for determining at least one relative characteristic of a transmit diversity transmitter based on at least one quality indicator based on signals received on the plurality of antennas. In some embodiments of the invention, the relative characteristic may be a relative power or amplitude ratio and/or a phase difference between the signals transmitted on the different antennas.Type: GrantFiled: December 26, 2007Date of Patent: February 16, 2010Assignee: Magnolia Broadband Inc.Inventors: Haim Harel, Kenneth Kludt, Yair Karmi
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Patent number: 7652624Abstract: Embodiments of millimeter-wave communication stations with directional antennas and methods for fast link recovery are generally described herein. Other embodiments may be described and claimed. In some embodiments, a transmitting station retransmits a packet in an adjacent direction when an acknowledgement is not received from a receiving station after a number of retransmission attempts. In other embodiments, a receiving station changes its reception to an adjacent direction when a packet is not received from a transmitting station after a number of missed reservations.Type: GrantFiled: March 6, 2007Date of Patent: January 26, 2010Assignee: Intel CorporationInventors: Guoqing C. Li, Kristoffer D Fleming, Richard D. Roberts
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Patent number: 7642962Abstract: An adaptive array antenna is disclosed which permits the circuit scale to be reduced by omitting a down-converter, an AD converter, and interconnects for them while controlling the directivity well. In one aspect, the array antenna comprises phase shift-amplitude control modules which accept signals received by antenna elements via an analog-to-digital converter. The value of any one of phase-amplitude change modules is set to 1. The values of the other phase-amplitude change modules are set to 0. Thus, the signal from any one antenna element is accepted. This sequence of operations is repeated as many times as there are antenna elements, whereby signals received by all the antenna elements can be accepted.Type: GrantFiled: May 7, 2008Date of Patent: January 5, 2010Assignee: Taiyo Yuden Co., Ltd.Inventors: Chikahiro Tomita, Fumitaka Iizuka, Kenji Kamitani
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Patent number: 7642961Abstract: An antenna positioning system comprises a first antenna system, a second antenna system, and a computer system. The computer system determines azimuths and elevations for the antenna systems to point at one another. The computer system retrieves license data for the antenna systems and determines if the antenna systems are licensed for the azimuths and elevations. If the antenna systems are licensed for the azimuths and elevations, then the computer system transfers control signals to the antenna systems indicating the azimuths and elevations. In response to the control signals, the antenna systems position themselves to the azimuths and elevations.Type: GrantFiled: December 19, 2006Date of Patent: January 5, 2010Assignee: Sprint Communications Company L.P.Inventor: Walter F. Rausch
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Publication number: 20090256747Abstract: A variable directivity antenna (2) has directivity direction angularly variable stepwise about itself. A tuner (8) selects a desired one from high frequency signals received at the antenna (2). The tuner (8) detects the level of the received signal and supplies it to a control unit (10). The control unit (10) searches for received signal levels, equal to or higher than a threshold level, of the received signal received in plural states in which the directivity of the antenna (2) is placed in different ones of directivity directions, and detects a slope of the received signal levels within a frequency range of the received signal. The control unit (10) employs the searched directivity direction for the smallest one of the detected slopes as the direction to which the antenna (2) is directed to receive the signal.Type: ApplicationFiled: April 10, 2009Publication date: October 15, 2009Applicant: DX ANTENNA COMPANY, LIMITEDInventors: Eiji Shibuya, Takayuki Yoshii
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Patent number: 7596387Abstract: A primary station for a wireless communication system transmits and receives communications within a sectorized cell with at least one secondary station. The primary station transmits and receives signals within a beam; and directs the signal transmission and reception as a shaped beam. The shaped beam is directed at a plurality of predetermined directions; either continuously or discretely.Type: GrantFiled: August 30, 2004Date of Patent: September 29, 2009Assignee: InterDigital Technology CorporationInventors: Steven Jeffrey Goldberg, Angelo Cuffaro
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Publication number: 20090231194Abstract: The present invention comprises a method for establishing a wireless communication link between a first communication device (1) having a narrow beam antenna (2) adapted to be steered to different positions and a second communication device (10), comprising the steps of transmitting a link request signal from said first communication device (1) to said second communication device (10) via said narrow beam antenna, wherein said link request signal comprises information relating to a current position of the narrow beam antenna, and obtaining, in case said link request signal is received in said second communication device (10), channel quality information representative of a current transmission path. The invention further comprises a transmitting device and a receiving device for executing said method.Type: ApplicationFiled: June 1, 2009Publication date: September 17, 2009Applicant: Sony Deutschland GmbHInventors: Masahiro UNO, Zhaocheng WANG
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Publication number: 20090219207Abstract: A variable directivity antenna (2) has directivity direction variable stepwise along the circumference of a circle centered about it. A tuner (8) selects a desired one from high frequency signals received at the antenna (2). The tuner (8) detects the level of the received signal and supplies it to a control unit (10). The control unit (10) searches for reception signal levels, equal to or higher than a threshold level, of the received signal received in antenna states in which the directivity of the antenna (2) is placed in different ones of directivity directions, and detects a signal-to-noise ratio of the signal received from directions adjacent to each of the searched directivity directions corresponding to the searched signal levels. The control unit (10) employs the searched directivity direction for the highest signal-to-noise ratio as the direction to which the antenna (2) is directed to receive the signal.Type: ApplicationFiled: February 2, 2009Publication date: September 3, 2009Applicant: DX Antenna Company, LimitedInventors: Eiji Shibuya, Takayuki Yoshii
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Publication number: 20090213007Abstract: An apparatus and method for transmitting Coexistence Beacon Protocol (CBP) in a cognitive radio system are provided. The apparatus includes a detector, a controller, and a transmitter. The detector scans channels on which neighboring Base Stations (BSs) operate through a plurality of directional antennas. The controller links the plurality of directional antennas with BSs, respectively. The transmitter receives a CBP packet through the directional antenna linked with the BS, and transmits the received CBP packet to at least one or more other BSs linked with at least one or more other directional antennas.Type: ApplicationFiled: February 26, 2009Publication date: August 27, 2009Applicant: Samsung Electronics Co., Ltd.Inventors: Cheng SHAN, Do-Young KIM, Eun-Taek LIM, Jung-Soo WOO, Geun-Ho LEE, Sang-Bum KIM, Yong-Ho PARK
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Patent number: 7565172Abstract: An adaptive antenna receiver whose follow-up performance is improved with respect to the angle change of the arrival direction of a desired signal. An antenna weight adaptive update section (11-1) adaptively updates the antenna weight according to a signals received by each antenna element and an error signal obtained from a desired signal corrected based on transmission channel estimation. An antenna weight direction constraint section (12-1) performs the constraint process for the antenna weight obtained by the antenna weight adaptive update section (11-1) to maintain the beam gain constant in the arrival direction of the desired signal. A beamformer (2-1) receives the desired signal through an array antenna using the antenna weight which has undergone the constraint process performed by the antenna weight direction constraint section (12-1).Type: GrantFiled: June 23, 2004Date of Patent: July 21, 2009Assignee: NEC CorporationInventor: Shousei Yoshida
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Publication number: 20090160707Abstract: A beamforming method comprises transmitting a training sequence from a transmitter array employing a set of beamforming vectors from a beamforming codebook. A receive array employs a combining codebook to acquire channel state information from the received transmissions, and estimates a preferred beamforming vector and a preferred combining vector. At least the preferred beamforming vector (and, optionally, the preferred combining vector) is transmitted back to the transmitter array.Type: ApplicationFiled: December 19, 2007Publication date: June 25, 2009Inventor: Ismail Lakkis
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Patent number: 7551135Abstract: The present invention comprises a method for establishing a wireless communication link between a first communication device (1) having a narrow beam antenna (2) adapted to be steered to different positions and a second communication device (10), comprising the steps of transmitting a link request signal from said first communication device (1) to said second communication device (10) via said narrow beam antenna, wherein said link request signal comprises information relating to a current position of the narrow beam antenna, and obtaining, in case said link request signal is received in said second communication device (10), channel quality information representative of a current transmission path. The invention further comprises a transmitting device and a receiving device for executing, said method.Type: GrantFiled: October 1, 2007Date of Patent: June 23, 2009Assignee: Sony Deutschland GmbHInventors: Masahiro Uno, Zhaocheng Wang
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Publication number: 20090153400Abstract: The present invention relates to a method for transmitting signals in a wireless communication system, in which signals are transmitted from a first communication device to a second communication device, said signals being transmitted in consecutive frames, each frame having a preamble section including preamble information, at least one of said first and said second communication devices having a narrow beam antenna which is adapted to be steered to different positions, each of said different positions corresponding to one of a number of different transmissions paths from said to said second communication device, including the steps of transmitting and receiving a first preamble section including preamble information enabling the estimation of a channel quality of a current transmission path, while said narrow beam antenna is in a current position corresponding to said current transmission path, steering said narrow beam antenna from said current position to a different position corresponding to a candidateType: ApplicationFiled: February 10, 2009Publication date: June 18, 2009Applicant: Sony Deutschland GmbHInventors: Zhaocheng WANG, Masahiro Uno, Volker Wullich
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Publication number: 20090128410Abstract: A method for allocating power for beamforming is described. The method includes selecting a number of data streams to be employed. Power for beamforming is allocated to the selected number of data streams based upon the effective SINR and in consideration of a FEC code. The allocation of power may be based upon maximizing the effective SINR. Additionally, the method may include determining an effective SINR using an EESM procedure. An apparatus, computer readable medium and system are also described.Type: ApplicationFiled: November 15, 2007Publication date: May 21, 2009Inventor: Shaohua Li
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Patent number: 7535419Abstract: A device for user data transmission implemented in an aircraft for transmitting user data to a relay aircraft. The device includes a controllable directional antenna arrangement and an antenna steering module that is structured and arranged to control radiation properties and transmitting power of the antenna arrangement. Moreover, the device includes an antenna orientation module and a threat management system. Additionally, the device includes an optimization device. Furthermore, the threat management system and the optimization device are associated with the antenna steering module and the optimization device receives a desired radiation profile from the threat management system and a desired direction range of an antenna lobe from the antenna orientation module. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.Type: GrantFiled: October 26, 2004Date of Patent: May 19, 2009Assignee: EADS Deutschland GmbHInventors: Peter Hurst, Ludwig Mehltretter, Monika Von Der Werth
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Publication number: 20090124199Abstract: An embodiment of the present invention provides an apparatus, comprising at least one transceiver operable in a wireless personal area network (WPAN), wherein said at least one transceiver is equipped with the directional antennas adapted to point substantially vertically towards a horizontal reflecting surface, such as a ceiling, and with an antenna pattern specifically designed to control the interference levels.Type: ApplicationFiled: November 8, 2007Publication date: May 14, 2009Inventors: Alexander Maltsev, Alex Kesselman, Roman Maslennikov, Alexey Khoryaev, Alexey Sevastyanov
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Patent number: 7511663Abstract: The present invention relates to a method for transmitting signals in a wireless communication system, in which signals are transmitted from a first communication device to a second communication device, said signals being transmitted in consecutive frames, each frame having a preamble section comprising preamble information, at least one of said first and said second communication devices having a narrow beam antenna which is adapted to be steered to different positions, each of said different positions corresponding to one of a number of different transmission paths from said first to said second communication device, comprising the steps of transmitting and receiving a first preamble section comprising preamble information enabling the estimation of a channel quality of a current transmission path, while said narrow beam antenna is in a current position corresponding to said current transmission path, steering said narrow beam antenna from said current position to a different position corresponding to a caType: GrantFiled: September 11, 2007Date of Patent: March 31, 2009Assignee: Sony Deutschland GmbHInventors: Zhaocheng Wang, Masahiro Uno, Volker Wullich
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Publication number: 20090079631Abstract: A device for user data transmission implemented in an aircraft for transmitting user data to a relay aircraft. The device includes a controllable directional antenna arrangement and an antenna steering module that is structured and arranged to control radiation properties and transmitting power of the antenna arrangement. Moreover, the device includes an antenna orientation module and a threat management system. Additionally, the device includes an optimization device. Furthermore, the threat management system and the optimization device are associated with the antenna steering module and the optimization device receives a desired radiation profile from the threat management system and a desired direction range of an antenna lobe from the antenna orientation module. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.Type: ApplicationFiled: October 26, 2004Publication date: March 26, 2009Applicant: EADS Deutschland GmbHInventors: Peter Hurst, Ludwig Mehltretter, Monika Von Der Werth