Simultaneous Using Plural Repeaters At Each Location Patents (Class 455/16)
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Patent number: 7715785Abstract: A system and method of compensating for the effects of the antenna coupling in on-frequency repeaters, whose input and output signals are the same frequency, are disclosed. The repeater is implemented with internal digitally determined compensation that reduces the effect of the antenna coupling, allowing the forward gain of the repeater to be increased. The real and imaginary components of the forward gain are dithered. The change in the power spectrum of the signal in response to the dithering is used to estimate the residual (uncompensated) feedback coupling.Type: GrantFiled: April 19, 2007Date of Patent: May 11, 2010Assignee: Powerwave Technologies, Inc.Inventor: Richard Neil Braithwaite
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Patent number: 7715787Abstract: A method of transmitting subpackets in a mobile communication system using at least one frequency carrier is disclosed. More specifically, the method comprises receiving a first broadcast subpacket from a base station (BS) at a first time slot on a first frequency carrier, and receiving at least one subsequent broadcast subpacket from the BS via at least one relay station (RS) at a second time slot on a second frequency carrier, wherein information of the first broadcast subpacket and the subsequent broadcast subpacket are the same.Type: GrantFiled: September 28, 2006Date of Patent: May 11, 2010Assignee: LG Electronics Inc.Inventors: Young Cheul Yoon, Sang Gook Kim, Li-Hsiang Sun, Byung Kwan Yi, Woo Hyun Paik
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Patent number: 7689166Abstract: A system and method for communicating through a host repeater. Data is received from a remote repeater communicating with a wireless device. The host repeater registers as the wireless device on a wireless network. The data is reformatted for transmission between the wireless devices and the wireless network.Type: GrantFiled: November 30, 2006Date of Patent: March 30, 2010Assignee: Embarq Holdings Company, LLCInventors: Michael K. Bugenhagen, Carl M. Coppage
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Patent number: 7684337Abstract: A method and system for communicating information in a cooperative relay network of wireless nodes. The wireless nodes including a source, a set of relays, and a destination. Channel state information for each channel between a particular relay of the set of relays and the destination is estimated. A subset of the relays is selected based on the channel state information. The channel state information is fed back to the subset of relays. The source node can then broadcasting data packets from the source to the subset of relays, and the subset of relays forward coherently the data packets from the subset of relays to the destination using beamforming based on the channel state information, while adjusting power to minimize a total energy consumption in the network.Type: GrantFiled: January 17, 2006Date of Patent: March 23, 2010Assignee: Mitsubishi Electric Research Laboratories, Inc.Inventors: Neelesh B. Mehta, Ritesh Madan, Andreas F. Molisch, Jinyun Zhang
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Patent number: 7676196Abstract: A telecommunications system provides service to a cellular device located within a radio-frequency (RF) shadow of a communication station. The system may include a line-of-sight (LOS) antenna located in a line of sight of the station and a shadow antenna in communication with the LOS antenna and located within a line of sight of the RF shadow. The LOS antenna receives a transmitter signal from the station, and the shadow antenna receives a cellular signal from the cellular device. The LOS antenna also receives the cellular signal from the shadow antenna and, in turn, transmits the cellular signal to the station. Similarly, the shadow antenna receives the transmitter signal from the LOS antenna and, in turn, transmits the transmitter signal to the RF shadow. Accordingly, the cellular device is able to receive the transmitter signal T, and the station is able to receive the cellular signal.Type: GrantFiled: December 15, 2003Date of Patent: March 9, 2010Assignee: Mosaic Technology Group CorporationInventors: Alexander C. Pummer, John E. Powers
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Patent number: 7643793Abstract: A method for relaying data packets to a subscriber station (SS) by taking a relay station (RS) into consideration when a base station (BS) establishes a data packet scheduling is disclosed. According to the method, a data packet is relayed by RSs, which have a signal intensity greater than a threshold value for all RSs appointed by the BS. Each SS determines whether the SS receives the data packet directly from the BS or via an RS, based on signal intensities between the SS and the BS and between the SS and RSs, and feeds channel information corresponding to the determination back to the BS, thereby allowing the data packet to be transmitted.Type: GrantFiled: July 14, 2006Date of Patent: January 5, 2010Assignee: Samsung Electronics Co., LtdInventors: Dae-Young Park, Seung-Young Park, Sang-Boh Yun
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Patent number: 7639982Abstract: A digital radio frequency transport system that performs bi-directional simultaneous digital radio frequency distribution is provided. The transport system includes a digital host unit and at least two digital remote units coupled to the digital host unit. The bi-directional simultaneous digital radio frequency distribution is performed between the digital host unit and the at least two digital remote units.Type: GrantFiled: December 19, 2003Date of Patent: December 29, 2009Assignee: ADC Telecommunications, Inc.Inventor: Philip M. Wala
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Patent number: 7630776Abstract: A system of controlling media devices configured for outputting signals to a surrounding area. The system including a control strategy for controlling operation of the media devices to execute operations according to a common schedule and a communications strategy for use in communicating the control strategy between the media devices in such a manner as to facilitate distribution of the control strategy to the media devices desired to operate according to the common timeline.Type: GrantFiled: August 23, 2005Date of Patent: December 8, 2009Inventor: Ronald Paul Harwood
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Patent number: 7627287Abstract: An on-channel repeater has a receiving antenna for receiving an RF signal and a transmitting antenna for transmitting on the same frequency as the input signal. An amplification path between the antennas provides substantially linear processing and includes a combiner, a decorrelating delay and a power amplifier. A filter estimator receives a reference signal and the combiner output and generates a plurality of control coefficients which are applied to an adaptive filter which filters the reference signal accordingly and applies its output to the combiner. The reference signal is derived not from the output of the decorrelating delay but rather from the output antenna after the power amplifier. Where there is an adjacent transmitter generating potentially interfering signals, the transmitter output is coupled to the same transmitter antenna.Type: GrantFiled: May 18, 2006Date of Patent: December 1, 2009Assignee: British Broadcasting CorporationInventor: Peter Neil Moss
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Patent number: 7623826Abstract: The invention relates to wireless repeater systems and methods. In embodiments, such systems and methods involve receiving a wireless transmission signal; and processing the wireless transmission signal using a digital signal processing facility (DSP); wherein the DSP is adapted to filter at least one sub-band of the wireless transmission signal using a digital bandpass filter.Type: GrantFiled: July 22, 2005Date of Patent: November 24, 2009Inventor: Frank Pergal
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Publication number: 20090286473Abstract: Provided is an on-channel repeater, which includes a receiver for receiving radio frequency (RF) signals; a subtractor for subtracting replica from the RF signals to thereby produce output signals of the subtractor; a repeating process unit for performing a repeating process onto the output signals of the subtractor; and a replica generator for calculating replica based on the output signals of the subtractor and the signals obtained after repeating process performed thereon and feeding the replica back to the subtractor.Type: ApplicationFiled: July 22, 2009Publication date: November 19, 2009Inventors: Sung-Ik PARK, Heung-Mook KIM, Jae-Young LEE, Jae-Hyun SEO, Ho-Min EUM, Yong-Tae LEE, Jong-Soo LIM, Soo-In LEE
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Patent number: 7620970Abstract: Herein are disclosed a cable television system, mobile communication terminal, a relay apparatus, a center apparatus, and a method of providing a cable television service using the system, which enable a user operating a CATV mobile terminal (6) to receive a CATV service regardless of the service area of the CATV station where the user is located. When a vehicle (5) having a CATV mobile terminal (6) mounted thereon moves into a service area of a CATV station (3, 4), the CATV mobile terminal (6) is operated to transmit a log-in request to the CATV station (3, 4). The CATV station (3, 4) is operated to inquire about the user to the subscriber station (2), and the subscriber station (2) is operated to judge whether or not the user is authentic. Subscriber station (2) is operated to deliver common contents to the CATV mobile terminal (6) through the CATV station (3, 4) when it is judged that the user is authentic.Type: GrantFiled: February 18, 2003Date of Patent: November 17, 2009Assignees: Panasonic Corporation, National Institute of Information and Communications Technology Incorporated Administrative AgencyInventors: Yuji Murao, Hirokazu Okita, Masayuki Fujise, Fumihide Kojima
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Publication number: 20090247071Abstract: A system and method for operating an FM system and wireless networking system coexistent in a mobile wireless device. A mobile wireless device includes a frequency modulation (“FM”) system that includes an FM transmitter and, optionally, an FM receiver. The mobile wireless device also includes a wireless networking system having a network receiver. The FM system is configured to disable the FM transmitter if an amplitude of a modulating signal provided to the FM transmitter is below a predetermined threshold.Type: ApplicationFiled: February 27, 2009Publication date: October 1, 2009Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Ariton E. XHAFA, Deric W. WATERS
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Patent number: 7596186Abstract: A modulation device comprises for each carrier frequency: means of discrimination between a signal coming from a first channel of a communications link and a signal coming from a second channel of said link, so as to obtain differentiated first and second signals; first assigning means, enabling the assigning of the first differentiated signal to one of the two modulation arms, and the second differentiated signal to the other of the two modulation arms.Type: GrantFiled: August 16, 2005Date of Patent: September 29, 2009Assignee: Canon Kabushiki KaishaInventor: Philippe Le Bars
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Patent number: 7580672Abstract: A communication repeater for use in conjunction with a base transceiver subsystem (BTS) of a wireless communication system. The repeater expands the coverage area of the BTS and allows receivers to identify whether the source of a communication signal was directly from a BTS or was broadcast by a repeater. Identification of the signal source facilitates position determination, particularly in hybrid position determination systems. The repeater implements differential delay modulation of the transmitted signal. The repeater re-transmits the original BTS signal as well as a time delayed version of the signal. Additionally, the repeater introduces synthetic path diversity in the form of spatial diversity or polarity diversity to de-correlate the re-transmitted original signal from the time delayed signal. The repeater can broadcast the delayed signal with the same power as the re-transmitted original signal or can attenuate the delayed signal relative to the re-transmitted original signal.Type: GrantFiled: August 7, 2003Date of Patent: August 25, 2009Assignee: QUALCOMM IncorporatedInventor: Douglas Neal Rowitch
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Publication number: 20090209200Abstract: A method (200) of dynamically deploying wireless repeaters in a communication network can include establishing (205) a first wireless repeater serving as a communication node, evaluating (210) quality of a signal dynamically among at least one additional repeater being deployed in the communication network and the communication node, and selectively entering (215) a vertical unit in one of the additional repeaters being deployed. Evaluating the quality can include measuring (211) a signal strength from other repeaters in the communication system or measuring (212) a signal strength from a nearest repeater among the other repeaters in the system. Evaluating can also include pinging (213) the communication node. The vertical units can be entered as an input using any number of input devices including, but not limited to a keypad, a rotary switch (22 and 24), a voice recognition system or any combination thereof.Type: ApplicationFiled: April 28, 2009Publication date: August 20, 2009Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventor: Christopher Couper
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Patent number: 7577399Abstract: In a method for the error-monitored transmission of data via interfaces of a multi-step communication system, the data is transmitted from a transmitter station to a data-receiving station via at least two relay stations which are connected therebetween and receive and further transmit the data parallel to each other. The data is retransmitted if the transmission has been insufficient due to a request from the receiver end and/or due to the lack of a confirmation from the receiver end. In order to increase performance while reducing power consumption of the system, the request or confirmation is generated only by the receiver station and is sent back to the transmitter station. The relay stations consequently do not generate any confirmations or requests.Type: GrantFiled: June 16, 2003Date of Patent: August 18, 2009Assignee: Nokia Siemens Networks GmbH & Co. KGInventors: Josef Eichinger, Tobias Giebel, Mattias Lampe, Hermann Rohling, Egon Schulz, Wolfgang Zirwas
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Patent number: 7561525Abstract: A wireless communication system for performing multi-hop transmission between stations includes: a requesting station for requesting multi-hop transmission; a destination station which receives the request from the requesting station; and neighbor stations, wherein the requesting station determines a communication capacity for each neighbor station and transmits a routing request message in which capacity information is described to each neighbor station, and based on the capacity information described in the routing request message received from each neighbor station, the destination station determines as to which routing request message to respond to and performs routing.Type: GrantFiled: June 13, 2005Date of Patent: July 14, 2009Assignee: Sony CorporationInventor: Shin Saito
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Patent number: 7546094Abstract: A method (200) of dynamically deploying wireless repeaters in a communication network can include establishing (205) a first wireless repeater serving as a communication node, evaluating (210) quality of a signal dynamically among at least one additional repeater being deployed in the communication network and the communication node, and selectively entering (215) a vertical unit in one of the additional repeaters being deployed. Evaluating the quality can include measuring (211) a signal strength from other repeaters in the communication system or measuring (212) a signal strength from a nearest repeater among the other repeaters in the system. Evaluating can also include pinging (213) the communication node. The vertical units can be entered as an input using any number of input devices including, but not limited to a keypad, a rotary switch (22 and 24), a voice recognition system or any combination thereof.Type: GrantFiled: August 27, 2004Date of Patent: June 9, 2009Assignee: International Business Machines CorporationInventor: Christopher C. Couper
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Patent number: 7519323Abstract: A repeater mediates traffic between a network transceiver and a user transceiver in a wireless communication system. The repeater comprises a network unit that maintains a network link with the network transceiver, a user unit that maintains a user link with the user transceiver, a two-way communication pathway between the network unit and the user unit; that facilitate the communication of signals between the network transceiver and the user transceiver in autonomous repeater hops between the network transceiver and the network unit, between the user transceiver and the user unit, and between the network unit and the user unit, and beam-formers respectively coupled to the network unit and the user unit and adapted to communicate signals in an operating frequency band of the network and user transceivers and to control effective radiated power.Type: GrantFiled: January 11, 2005Date of Patent: April 14, 2009Assignee: Nextivity, Inc.Inventor: Behzad Mohebbi
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Patent number: 7493100Abstract: There is provided a method of facilitating communication in an electrical power network having a complex impedance. The method includes modifying the complex impedance, and determining whether the modifying affected a quality of the communication.Type: GrantFiled: October 15, 2003Date of Patent: February 17, 2009Assignee: General Electric CompanyInventors: Kenneth Brakeley Welles, II, Douglas H. Marman
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Patent number: 7486934Abstract: A propagation delay-propagation loss table is stored in advance in a radio base station, a first area and a second area being set in advance in the propagation delay-propagation loss table, the first area being predicted to contain the relation between the propagation delay and propagation loss when a mobile station is not within the service area of a repeater, while in the second area the effect of the control delay and power gain caused by the repeater upon this first area is taken into consideration. In the radio base station, it is then determined that a mobile station is within the service area of the radio base station when the relation between the propagation loss value that has been reported from the mobile station and the propagation delay that has been calculated is contained within the first area, and it is determined that the mobile station is within the service area of the repeater when the relation is contained within the second area.Type: GrantFiled: June 21, 2005Date of Patent: February 3, 2009Assignee: NEC CorporationInventor: Katsumi Tanoue
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Patent number: 7480486Abstract: A wireless repeater and method for managing air interface communications is provided. A repeater may include a donor antenna, a coverage antenna, a mobile station modem, a processor, and data storage. The donor antenna will receive a plurality of air interface beams on the forward link from a radio access network. The coverage antenna will pass each forward link beam received to a mobile station being served by the repeater. Further, the donor antenna will pass each forward link air interface beam to the MSM, where the MSM will apply a rake receiver to identify a signal characteristic of the forward link of each beam received, and the processor will record in the data storage the signal characteristic corresponding to each beam. Given this data, the repeater will select an air interface beam with the most preferable signal characteristic, and will keep only this beam active for reverse link communications.Type: GrantFiled: December 19, 2005Date of Patent: January 20, 2009Assignee: Sprint Spectrum L.P.Inventors: Dae-Sik Oh, Mark L. Yarkosky, Saad Z. Asif
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Patent number: 7430186Abstract: An apparatus, method and computer readable device for providing spatial information in a sensor network. The sensor network comprises a plurality of sensors and a plurality of actuators, each sensors and actuators have a unique id and a known spatial location within a spatially-bounded zone and a database is provided for storing the location each sensor and actuator. A spatial-processor generates a plurality of context zones based upon the information contained in the location database to provide actuator coverage for the spatially-bounded zone. Each context zone is generated by assigning a subset of the plurality of sensors as a spatial boundary of each context zone and by deploying a subset of the plurality of actuators into one or more context zones. In operation, the spatial-processor determines if an actuator has failed in context zone and redeploys one or more actuators from another intersecting context zone to the context zone containing the non-operational actuator.Type: GrantFiled: December 14, 2007Date of Patent: September 30, 2008Assignees: International Business Machines Corporation, Institute For Information Technology AdvancementInventor: Andrew Kim
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Patent number: 7415242Abstract: A repeater for a wireless network might use a first communication interface to detect the presence of a wireless device. Alternatively, another network element might use the first communication interface to detect the presence of the wireless device and then provide a notification to the repeater. The first communication interface might be a low-power communication interface, such as one that uses Bluetooth. In response to detecting a wireless device or receiving a notification, the repeater might switch to an active mode and begin repeating signals on the wireless network via a second communication interface, such as one that uses CDMA.Type: GrantFiled: November 10, 2003Date of Patent: August 19, 2008Assignee: Sprint Spectrum L.P.Inventor: John Cheong Wai Ngan
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Patent number: 7406295Abstract: A method for dynamically directing a wireless repeater is provided. A repeater will include an antenna, a mobile station modem, a processor and data storage. The processor will cause the antenna to sweep over a coverage area, possibly through increments. At each increment, the antenna will receive signals and pass the signals to the MSM. The MSM will then apply a rake receiver to identify characteristics in the received signals, such as PN offsets and signal-to-noise ratios (EC/IO) for each PN offset, and the processor will record in the data storage the PN offsets and corresponding signal-to-noise ratios at that increment. Given this data, the processor will then instruct the antenna to move to the increment where the MSM detected the strongest signal-to-noise ratio. As a result, the antenna of the repeater will point at a base station that is likely to supply the signal with the highest signal-to-noise ratio.Type: GrantFiled: September 10, 2003Date of Patent: July 29, 2008Assignee: Sprint Spectrum L.P.Inventor: Mark Yarkosky
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Patent number: 7391757Abstract: A wireless LAN comprises an access point with a data communicator for data communicated over different channels, each using a respective wireless technology, and at least one mobile communications device with a data communicator for data communicated over the channels and using the wireless technologies. A first of the channels uses a wireless technology operating at a first frequency bandwidth, and a second of the channels uses a different wireless technology operating at a second, non-overlapping frequency bandwidth. The wireless technology used for the downlink channel operates at a higher data rate than the wireless technology used for the uplink channel. The controller controls data communications over the downlink channel and the uplink channel to maximise the downlink data communication QoS.Type: GrantFiled: October 30, 2003Date of Patent: June 24, 2008Assignee: Hewlett-Packard Development Company, L.P.Inventors: Wassim Haddad, James Thomas Edward McDonnell
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Patent number: 7386274Abstract: A sending subscriber system may participate in a wireless network by generating a message to transmit in a wireless network, identifying a local wireless subscriber system with which communications may be established, and determining whether to use the wireless local subscriber system as a relay.Type: GrantFiled: April 15, 2003Date of Patent: June 10, 2008Assignee: AOL LLC, a Delaware Limited Liability CompanyInventor: Gilbert G. Weigand
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Patent number: 7327980Abstract: A UMTS 3g repeater and a Multi Sector Directional LMU Antenna Array can be integrated to be deployed inside large structures and large moving vehicles such as ferries and trains.Type: GrantFiled: January 29, 2003Date of Patent: February 5, 2008Assignee: Hutchison Whampoa Three Gip (Bahamas) LimitedInventor: Erol Hepsaydir
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Patent number: 7324471Abstract: An in-building mobile communication system. The in-building mobile communication system comprising a transmission/reception repeater for performing both transmission and reception via an antenna, with respect to a terminal, the transmission/reception repeater being installed in the center of a building, at least one transmission repeater for performing only transmission, with respect to the terminal, which is installed a certain preset distance away from the transmission/reception repeater, the transmission repeater facing the transmission/reception repeater, at least one transmitter/receiver unit connected in parallel with the repeaters, and a base station device connected with the transmitter/receiver unit.Type: GrantFiled: September 18, 2002Date of Patent: January 29, 2008Assignee: Samsung Electronics Co., Ltd.Inventor: Kyung-Hwan Kim
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Patent number: 7317918Abstract: In a wireless ad hoc network comprising a plurality of nodes, a primary node receives a domain name service (DNS) query from a node. The primary node determines whether the query can be resolved based on cached information. If the DNS query can be resolved based on cached information, the primary node sends a response to the node. If the DNS query cannot be resolved based on cached information, the primary node sends the DNS query outside the ad hoc network for resolution.Type: GrantFiled: July 19, 2004Date of Patent: January 8, 2008Assignee: Motorola, Inc.Inventors: Ramandeep Ahuja, Surender Kumar, Vidya Narayanan
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Patent number: 7295806Abstract: The principles of the present invention provide for using directional antennas to adaptively communicate in a wireless mesh network. A number of infrastructure components are included in a wireless mesh network environment. Each infrastructure component includes an omni-directional antenna and one or more directional antennas (e.g., electronically steered phased array antennas) that can be used to communicate with other infrastructure component and wireless devices. Directional antennas can utilize one or more directional beams that can be directed towards an infrastructure component or wireless device to communicate with the infrastructure component or wireless device. Infrastructure components can adapt to communicate with the same destination through different intermediary infrastructure components. Since the signal strength of a directional beam can be greater than that of an omni-directional antenna of the same gain, infrastructure components can be separated by greater distances.Type: GrantFiled: May 30, 2003Date of Patent: November 13, 2007Assignee: Microsoft CorporationInventors: Christopher J. Corbett, Warren V. Barkley, Amer Aref Hassan
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Patent number: 7283786Abstract: A radio relay apparatus, a monitoring apparatus, and a method of determining an identification code of the radio relay apparatus enabling rapid formation of a radio communication area. The radio relay apparatus receives the base station identification code from a base station, determines a temporary identification code based on the received base station identification code, and transmits the temporary identification code to the monitoring apparatus. When the received temporary identification code is different from the formal identification codes of other radio relay apparatuses, the monitoring apparatus transmits directly the temporary identification code to the radio relay apparatus; when the received temporary identification code is the same as the formal identification code of a radio relay apparatus, the monitoring apparatus determines an identification code different from the temporary identification code and transmits the determined identification code to the radio relay apparatus.Type: GrantFiled: July 21, 2003Date of Patent: October 16, 2007Assignee: NTT DoCoMo, Inc.Inventors: Naoto Shimada, Shiro Takenouchi
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Patent number: 7280799Abstract: A wireless communication device repeater includes two antennas coupled to a bi-directional gain stage. A gain control system is coupled to the gain stage and adjusts the gain of the gain stage based on oscillation events.Type: GrantFiled: August 18, 2004Date of Patent: October 9, 2007Assignee: Broadlink Research Inc.Inventors: Hamid Najafi, Fred Judson Heinzmann
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Patent number: 7277672Abstract: A method is described for selecting repeaters comprising: transmitting a first signal from a first node to a second node; measuring signal strength of the first signal at the second node; transmitting a second signal from the second node to the first node; measuring signal strength of the second signal at the first node; and selecting the second node as a repeater based on the signal strength of the first signal and/or the signal strength of the second signal. Another embodiment of the method comprises: calculating signal strength of a signal transmitted to each of a plurality of nodes (the signal strength being measured at each node of the plurality); and selecting one or more of the nodes to be a repeater if the signal strength is below a maximum threshold value and above a minimum threshold value.Type: GrantFiled: October 20, 2004Date of Patent: October 2, 2007Assignee: Echelon CorporationInventors: Darrell Duffy, Glen Riley
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Patent number: 7274907Abstract: A wireless instrumentation system enables a plurality of low power wireless transceivers to transmit measurement data from a plurality of remote station sensors to a central data station accurately and reliably. The system employs a relay based communications scheme where remote stations that cannot communicate directly with the central station due to interference, poor signal strength, etc., are instructed to communicate with other of the remote stations that act as relays to the central station. A unique power management scheme is also employed to minimize power usage at each remote station and thereby maximize battery life. Each of the remote stations preferably employs a modular design to facilitate easy reconfiguration of the stations as required.Type: GrantFiled: December 19, 2003Date of Patent: September 25, 2007Assignee: Unites States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Jose Perotti, Angel Lucena, Anthony Eckhoff, Carlos T. Mata, Norman N. Blalock, Pedro J. Medelius
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Patent number: 7272362Abstract: A multi-sector in-building repeater, including: a master transmitting unit for receiving multi-sector signals of a carrier from a base station, mixing the multi-sector signals with different transmission intermediate frequency signals, and outputting mixed multi-sector signals to a same transmission line; a plurality of slave transmitting units for extracting sector signals assigned to the multi-sector signals from the master transmitting unit, converting extracted sector signals into high frequency signals, and transmitting converted high frequency signals through an antenna to a mobile terminal.Type: GrantFiled: January 28, 2004Date of Patent: September 18, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Chang-Rae Jeong, Gui-Jung Lee, Tae-Hoon Park
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Patent number: 7254372Abstract: A method and system for transmitting, receiving, and collecting information related to a plurality of working components, such as street lamps, allows for efficient and effective monitoring and controlling of working components through short-distance radio communications at low power levels. In a preferred implementation of the present invention, a communications network includes a plurality of transceiver modules, each of which is secured and operably connected to a working component. These transceiver modules transmit and receive radio communications or “messages” representative of the status of the working component from one another in a controlled manner, with each message ultimately being directed to an area control module.Type: GrantFiled: September 14, 2004Date of Patent: August 7, 2007Assignee: Tyco Electronics Logistics A.G.Inventors: Gerald E. Janusz, Stephen C. Payne, Timothy J. Prell, Paul van der Pol
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Patent number: 7233770Abstract: A system communicates with a mobile radio and includes a repeater that is operative for transmitting and receiving communications signals on respective first and second frequency hopping hopset. A mobile radio receives a communication signal from the repeater on the first frequency hopping hopset and transmits a communication signal to the repeater on the second frequency hopping hopset.Type: GrantFiled: March 7, 2005Date of Patent: June 19, 2007Assignee: Harris CorporationInventors: Robert Williamson, David M. Bicksler
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Patent number: 7184703Abstract: A multi-hop wireless, for example cellular, communications system is provided comprising a source equipment which may be one of a base station or an end user terminal for transmitting signals towards a destination equipment which may be the other of a base station or an end user terminal via at least one relay equipment. The relay equipment receives a plurality of signals transmitted from one or more source equipments of the system and from this plurality of signals selects a signal to relay. In this way the decision about which relays are included in which communication paths in the system is distributed to the relay equipments of the system, thus reducing the signalling overhead as compared with link state protocols which are typically used for routing in such multi-hop systems.Type: GrantFiled: June 6, 2003Date of Patent: February 27, 2007Assignee: Nortel Networks LimitedInventors: James M Naden, Fiona Wilson
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Patent number: 7177643Abstract: A wireless network is provided having a plurality of intermediate devices that can be dynamically added and removed from the wireless network. Each of the intermediate devices includes a transceiver operable to reproduce a signal and transmit the reproduced signal. At least one intermediate device in the plurality of intermediate devices is in motion while a part of the wireless network. A source device is operable to transmit a signal to at least one intermediate device and a destination device is operable to receive a reproduced signal from at least one of the intermediate devices without using a wireless tower. A routing path is transmitted from the source device along with the signal specifying the path that the signal is to travel.Type: GrantFiled: August 8, 2001Date of Patent: February 13, 2007Inventor: Newton Howard
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Patent number: 7171161Abstract: A system and method for classifying signals occurring in a frequency band. One or more characteristics of one or more signals in the frequency band are detected using any suitable technology, such as a device that can generate characteristics of signal pulses detected in the frequency band. Data pertaining to the signal pulses is accumulated over time. The accumulated signal data is compared against reference data associated with known signals to classify the one or more signals in the frequency band based on the comparison. The accumulated data may include one or more characteristics selected from the group consisting of: pulse center frequency, pulse bandwidth, pulse duration, time between pulses and number of different active pulses, and wherein the reference data associated with each of a plurality of known signals comprises one or more characteristics selected from the group consisting of: pulse center frequency, pulse bandwidth, pulse duration and time between pulses.Type: GrantFiled: July 28, 2003Date of Patent: January 30, 2007Assignee: Cognio, Inc.Inventor: Karl A. Miller
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Patent number: 7162201Abstract: A repeater and method for automatically setting output signal level of the repeater is disclosed. The repeater includes: a voltage detection unit for measuring a voltage of signal amplified by a plurality of the amplifiers; a digital variable resist unit for providing a reference voltage value Vref; a comparison unit for comparing the detected voltage Vdec from the voltage detection unit and the reference voltage value Vref from the digital variable resist unit; and a control unit for setting output signal level of the repeater by controlling the digital variable resistor unit to generate the reference voltage Vref to be identical to the detected voltage Vdec and controlling an output of repeater based on the comparison result from the comparison unit after setting the output signal level of the repeater.Type: GrantFiled: December 29, 2003Date of Patent: January 9, 2007Assignee: Ace TechnologyInventors: Young-Sang Yoon, Chang-Rim Park, Woo-Gyu Jun
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Patent number: 7139527Abstract: A communication system having an excellent communication path capacity characteristic even in an insight transmission environment in which a transmitter and a receiver can see each other directly in an MIMO communication system and a wireless communication device for the communication system, including: a wireless device having a transmitter for distributing transmission data including encoded data and a training signal to a plurality of antennas, and transmitting the data as radio signals from the plurality of antennas at a predetermined timing; a plurality of wireless devices having repeaters each for receiving the radio signal, storing the radio signal into a buffer so that the radio signal is delayed by predetermined time, and transmitting the radio signal delayed; and a wireless device having a receiver for receiving the radio signals from the plurality of second wireless devices by a plurality of antennas and demodulating the encoded data by using the training signal multiplexed on the received radio siType: GrantFiled: July 11, 2002Date of Patent: November 21, 2006Assignees: Hitachi, Ltd., Hitachi Cable, Ltd.Inventors: Tsuyoshi Tamaki, Katsumi Sakai, Takashi Yano
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Patent number: 7092713Abstract: A mechanism that allows one wireless computing system to communicate with another even though they are out of range of each other's transmitter/receiver circuitry, and without requiring dedicated external equipment to facilitate the communication. Instead, intermediary wireless computing systems may facilitate the communication. Upon receiving a request to communicate with a destination wireless device, each intermediary computing system discovers available wireless communications, and forwards the communication to them. The next intermediary computing system does the same, and so on and so forth, until the destination wireless device receives the wireless communication. The response is returned via the same path in reverse. Accordingly, the source wireless computing system may discover a possible wireless path to the destination wireless device.Type: GrantFiled: April 29, 2003Date of Patent: August 15, 2006Assignee: Microsoft CorporationInventor: Vijaye G. Raji
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Patent number: 7079808Abstract: A wireless repeater and controller is placed between a light socket and a light bulb, such as in a ceiling light fixture. The wireless repeater and controller has an extending threaded portion that screws into the light socket, and a recessed threaded portion that receives a light bulb. When the light switch that would normally control the light bulb is on, power is provided to the wireless repeater and controller. When the power to the wireless repeater and controller is toggled on then off using the light switch, the wireless repeater and controller disconnects line power from the light bulb so the light switch can still be used to control the light bulb.Type: GrantFiled: April 18, 2002Date of Patent: July 18, 2006Assignee: International Business Machines CorporationInventor: Bryan Lester Striemer
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Patent number: 7062252Abstract: A base-station transceiver system (BTS) operative in a cellular telephone network, consisting of a main up-link port and a diversity up-link port which are adapted to operate cooperatively to receive up-link signals over-the-air from cellular telephones such that both of the ports receive the up-link signals from each of the cellular telephones. The two ports are coupled to receive signals from wired telephones, such that the main up-link port receives signals only from a first group of the wired telephones and the diversity up-link port receives signals only from a second group of the wired telephones. The system also includes signal processing circuitry which is adapted to receive the signals from the up-link ports and convey the signals over the network.Type: GrantFiled: October 20, 2003Date of Patent: June 13, 2006Assignee: Qualcomm, IncorporatedInventor: Haim Weissman
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Patent number: 7058176Abstract: A cover structure (1) for a portable electronic device includes a front cover (10) and a back cover (20), wherein the front cover forms a main joint portion (120), the back cover forms a shell (22), the main joint portion has an arcuate wall (121), and a recessed portion (1210) is formed on the arcuate wall. When assembling the front and back covers, a knuckle (12) is formed by means of the shell engaging with the main joint portion on the recessed portion thereof.Type: GrantFiled: July 22, 2003Date of Patent: June 6, 2006Assignee: Fih Co., Ltd.Inventors: Chia-Hua Chen, Qing Ming Huang
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Patent number: 7050808Abstract: A method and system for transmitting, receiving, and collecting information related to a plurality of working components, such as street lamps, allows for efficient and effective monitoring and controlling of working components through short-distance radio communications at low power levels. In a preferred implementation of the present invention, a communications network includes a plurality of transceiver modules, each of which is secured and operably connected to a working component. These transceiver modules transmit and receive radio communications or “messages” representative of the status of the working component from one another in a controlled manner, with each message ultimately being directed to an area control module.Type: GrantFiled: June 6, 2001Date of Patent: May 23, 2006Assignee: Telemics, Inc.Inventors: Gerald E. Janusz, Stephen C. Payne, Timothy J. Prell, Paul van der Pol
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Patent number: 7039357Abstract: A method for wireless communication, including positioning a first plurality of slave transceivers within a region and positioning a second plurality of slave transceivers within the region in positions spatially separated from the positions of the first plurality of slave transceivers. The method further includes receiving at the first plurality and at the second plurality of slave transceivers a reverse radio frequency (RF) signal generated by a mobile transceiver within the region and generating respective first and second slave signals responsive thereto. The method also includes conveying the first and second slave signals separately to a base transceiver station (BTS) external to the region, and processing the first and second slave signals conveyed to the BTS so as to recover information contained in the reverse RF signal generated within the region.Type: GrantFiled: June 26, 2001Date of Patent: May 2, 2006Assignee: Qualcomm IncorporatedInventors: Haim Weissman, Eli Yona