With Output Selecting Patents (Class 455/133)
  • Patent number: 11563457
    Abstract: An antenna system for use with one or more media devices is provided. The antenna system includes a plurality of antenna elements. Each antenna element is associated with an independent feed element. In addition each antenna element is configured to receive a plurality of radio frequency (RF) signals. Each RF signal can be associated with a UHF band or a VHF band. The antenna system can include at least one tuner and at least one switching device. The at least one switching device can be configured to selectively couple the at least one tuner to one antenna element of the plurality of antenna elements based, at least in part, on channel selection data associated with the at least one tuner.
    Type: Grant
    Filed: July 12, 2021
    Date of Patent: January 24, 2023
    Assignee: KYOCERA AVX COMPONENTS (SAN DIEGO), INC.
    Inventors: Michael Roe, Sebastian Rowson, Rowland Jones
  • Patent number: 11438027
    Abstract: A base station antenna and a base station including the base station antenna are provided. A base station antenna includes a transceiver array configured to output M signals, wherein M is an integer greater than 1; an antenna array including N antenna units, wherein N is an integer greater than M; a first-level signal allocating network configured to allocate first power to the M signals, and output P signals, wherein P is an integer greater than M; a signal synthesizing network including multiple signal synthesizers, wherein each of the multiple signal synthesizers utilizes two signals of the P signals to synthesize two output signals; and a second-level signal allocating network configured to allocate second power to signals output by the multiple signal synthesizers, and output N signals to the N antenna units.
    Type: Grant
    Filed: September 23, 2020
    Date of Patent: September 6, 2022
    Inventors: Lin Chen, Meiling Zhang, Qin Li, Wei Jiang, Jia Yan, Shaomin Zhang
  • Patent number: 11304206
    Abstract: An electronic device that determines one or more antenna patterns is described. During operation, this electronic device may reserve N time slots in a communication channel. Then, the electronic device may provide predefined frames in the N time slots that are intended for the second electronic device, where each time slot is associated with a different antenna pattern of an antenna. For example, the predefined frames may include null data packets (NDPs), and the time slot may have an extremum value of a performance metric, such as a signal-to-noise ratio. Moreover, the electronic device may receive feedback associated with the second electronic device, where the feedback includes information specifying at least a time slot in the N time slots. Next, the electronic device may select, based at least in part on the feedback, an antenna pattern associated with the time slot for use when communicating with the second electronic device.
    Type: Grant
    Filed: October 22, 2020
    Date of Patent: April 12, 2022
    Assignee: ARRIS Enterprises LLC
    Inventor: Shuai Xiao
  • Patent number: 11283500
    Abstract: The disclosure provides a method and a device in a User Equipment (UE) and a base station for wireless communication. A first node receives T first-type radio signals, and transmits T second-type radio signals in T time windows respectively; and the first node performs Q time(s) of energy detection(s) in Q time subpool(s) on a first frequency subband respectively to obtain Q detection value(s). The T second-type radio signals are one-to-one corresponding to the T first-type radio signals; only T1 first-type radio signal(s) among the T first-type radio signals is(are) used for determining the Q; the T is a positive integer greater than 1, the Q is a positive integer, and the T1 is a positive integer less than the T; the T1 first-type radio signal(s) consist(s) of all of the first-type radio signals among the T first-type radio signals that are associated to a first antenna port set.
    Type: Grant
    Filed: June 9, 2020
    Date of Patent: March 22, 2022
    Assignee: SHANGHAI LANGBO COMMUNICATION TECHNOLOGY COMPANY LIMITED
    Inventors: Keying Wu, Xiaobo Zhang
  • Patent number: 11240827
    Abstract: Methods, systems, computer-readable media, and apparatuses for to managing use of a satellite positions system (SPS) receiver in conjunction with one or more radio access technology (RAT) transmitters. In certain embodiments, a controller can be used to prioritize reception by the SPS receiver over transmission by the one or more RAT transmitters.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: February 1, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Jie Wu, Chun-Hao Hsu, Liang Zhao, Parvathanathan Subrahmanya, Amit Mahajan, Nitin Pant, Vieri Vanghi
  • Patent number: 10840595
    Abstract: Techniques are disclosed for conjoint beam shaping for optimizing radar and sonar performance. A method may include determining a system pattern of an antenna system based at least on a first antenna pattern and a second antenna pattern. The first antenna pattern may be based on first antenna parameters. The second antenna pattern may be based on second antenna parameters. The method may further include determining a score based at least on the determined system pattern and reference information. The method may further include adjusting the first antenna parameters and second antenna parameters based at least on the score. Related systems and devices are also disclosed.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: November 17, 2020
    Assignee: FLIR Systems, Inc.
    Inventors: Patrick Lamontagne, Alexandre Marsolais
  • Patent number: 10805855
    Abstract: Cell selection techniques are provided for network access to cells that may employ one or more coverage enhancement techniques. A user equipment (UE), which may be a machine type communication (MTC) device, upon initial acquisition or upon wakeup may measure a reference signal received power (RSRP), reference signal received quality (RSRQ), or both, and determine a cell selection value based at least in part on the RSRP, RSRQ, or a combination thereof. The cell selection value may be determined based on an offset, which may be selected based on a measurement accuracy capability of the UE. UE sequential access attempts, neighbor cell list information that may include coverage enhancement of neighboring cells transmissions, and cell re-selection measurement frequency adjustments are also described.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: October 13, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Renqiu Wang, Madhavan Srinivasan Vajapeyam, Hao Xu, Wanshi Chen, Peter Gaal
  • Patent number: 10686485
    Abstract: A high isolation duplexer/quasi circulator with two quadrature couplers is disclosed. Isolation between a transmit (TX) port and receive (RX) port of the quasi circulator is improved through use of two quadrature couplers. The quadrature couplers are coupled such that a first TX-RX signal path (from the TX port to the RX port) is shifted at or near 180 degrees from a second TX-RX signal path. These paths cancel each other to provide a high level of isolation between the TX port and the RX port. There are two signal paths between an antenna (ANT) port and the quadrature couplers for both TX signals and RX signals. A phase shift circuit is coupled to the ANT port of one or both duplexers such that the signals passing through the quadrature couplers to the ANT port are combined substantially in phase.
    Type: Grant
    Filed: April 10, 2019
    Date of Patent: June 16, 2020
    Assignee: Qorvo US, Inc.
    Inventors: Kelly M. Lear, Jeffrey D. Galipeau
  • Patent number: 10475325
    Abstract: A wireless monitoring system for monitoring at least one person in a building. The wireless monitoring system comprises a data collection device and a plurality of wireless signalling devices working in a star network topology, the data collection device being adapted to wirelessly receive data transmitted from each of the plurality of wireless signalling devices. The signalling devices and the data collection device being adapted to send and receive FSK modulated signals in a predetermined single channel and the signalling devices being adapted to send data packets such as a heartbeat message to the data collection device.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: November 12, 2019
    Assignee: SENSO2ME NV
    Inventors: Johannes Bernardus Schueler, Wilfried Richard Hortense Philips, Richard Kleihorst, Alain Myriam Robert Van Buyten, Stefan Albert Denise Debois
  • Patent number: 10432292
    Abstract: Adaptive multiplexing and transmit/receive diversity. A wireless device may include multiple antennas. A first set of antennas may be used for communication. One or more trigger conditions may be determined, and additional antennas may be activated for measurement. Based on the measurement(s), a second set of antennas may be selected and used for communication.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: October 1, 2019
    Assignee: Apple Inc.
    Inventors: Jia Tang, Zhu Ji, Yang Li, Johnson O. Sebeni, Yu-Lin Wang, Sulabh Khandelwal, Beibei Wang, Zheng Zhang
  • Patent number: 10277259
    Abstract: A front end circuit is disclosed. In an embodiment, the circuit includes a first antenna connection and first to third signal paths, each of which include a tunable filter and each of which is connected to the first antenna connection. The circuit further includes at least one phase shifter arranged in at least one of the signal paths between a respective filter and the first antenna connection and a control circuit configured to tune frequency bands of the filters, wherein the filters are operable in a FDD operating mode or a TDD operating mode, and wherein the front-end circuit is simultaneous operable in at least one transmission band and at least one reception band using all three filters and the associated signal paths.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: April 30, 2019
    Assignee: SnapTrack, Inc.
    Inventors: Juha Ellá, Edgar Schmidhammer
  • Patent number: 9705558
    Abstract: The exemplary embodiments include a radio frequency antenna switch configured to reject harmonic frequencies. In addition, the harmonic-rejected radio frequencies of the radio frequency antenna switch may be tuned by use of a capacitor array. The capacitor array may be configured with fuse elements or by control logic.
    Type: Grant
    Filed: February 8, 2011
    Date of Patent: July 11, 2017
    Assignee: Qorvo US, Inc.
    Inventors: Nuttapong Srirattana, Brian White, Alexander Wayne Hietala
  • Patent number: 9485007
    Abstract: A repeater, broadcast transmitting system, and method for relaying a broadcast signal between a gateway apparatus and a client apparatus are provided. The repeater includes a first interface which is configured to be connected to a gateway apparatus via a Wi-Fi communication protocol and is configured to receive a broadcast signal from the gateway apparatus; and a second interface which is configured to be connected to a client apparatus via the Wi-Fi communication protocol and is configured to transmit the broadcast signal to the client apparatus, wherein the first interface and the second interface use different frequency bands.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: November 1, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Eung-sik Yoon, Sun-ho Yang, Cheon-seong Lee, Tae-don Hwang
  • Patent number: 9467308
    Abstract: Example methods and apparatus to control synchronization in voice over Internet protocol (VoIP) networks after catastrophes are disclosed. An example border element comprises a network interface to receive a VoIP network registration request message from a VoIP endpoint, a catastrophe detector to determine whether a catastrophe has been detected, a backoff time module to compute a backoff time using a priority assigned to the VoIP endpoint and an expected number of VoIP network registration request messages, a recovery module to determine whether the VoIP endpoint is currently registered with the VoIP network, and to send a response message having a header representing the backoff time to the VoIP endpoint when the catastrophe has been detected and the VoIP endpoint is not currently registered with a VoIP network, and a signaling processor to process the VoIP network registration request message when the VoIP endpoint is currently registered with the VoIP network.
    Type: Grant
    Filed: August 1, 2008
    Date of Patent: October 11, 2016
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: James Jackson, Chaoxin Charles Qiu, Mehrad Yasrebi
  • Patent number: 9455764
    Abstract: A method for communication includes transmitting a first uplink message from a first remote node (200, 300, 400) to a central node (100) in a wireless communication system according to a first frequency hopping scheme, and transmitting a second uplink message from a second remote node to the central node in the wireless communication system according to a second frequency hopping scheme, different from the first scheme. Both the first and the second uplink messages are received and processed at the central node.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: September 27, 2016
    Assignee: Tyco Fire & Security GmbH
    Inventors: Mordechai Mushkin, Shimon Zigdon, Miri Ratner, David Harif
  • Patent number: 9407490
    Abstract: A method of processing signals may include receiving a first signal being modulated on a first carrier frequency in a predefined frequency band; measuring a signal level of a received second signal at a frequency higher than the first carrier frequency; and measuring a signal level of a received third signal at a frequency being lower than the first carrier frequency. The method may further include selecting an intermediate mixing carrier frequency from a plurality of intermediate mixing carrier frequencies for processing at least a portion of the received first signal based on the signal level of the second signal and the signal level of the third signal. The method may additionally include performing intermediate frequency reception of at least a portion of the received first signal using the selected intermediate mixing carrier frequency.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: August 2, 2016
    Assignee: INTEL CORPORATION
    Inventors: Greg Chance, Thorsten Tracht
  • Patent number: 9287918
    Abstract: A high-frequency front-end circuit includes a first variable filter and a second variable filter. One end of each of the variable filters is connected to a common terminal. The other end of the first variable filter is connected to a transmission individual terminal and the other end of the second variable filter is connected to a reception individual terminal. At the time of transmission of a transmission signal, the impedance of the second variable filter is adjusted such that the impedance seen on the second variable filter side from a connection point between the variable filters is open. At the time of transmission of a reception signal, the impedance of the first variable filter is adjusted such that the impedance seen on the first variable filter side from a connection point between the variable filters is open.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: March 15, 2016
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Hisao Hayafuji, Shinya Mizoguchi, Hidenori Obiya
  • Patent number: 9288031
    Abstract: A switch arrangement comprises a first and second single pole switch. The pole of the first switch can selectively connect to a first and second path. The pole of the second switch can selectively connect to the first and second path. The first switch is configurable for a first mode of operation to connect a RF signal received at the pole to the first path to form a RF transmitter chain. The second switch is configurable for the first mode to connect the pole to the first path to form a RF receiver chain for receiving a RF signal. The first switch is configurable for a second mode to connect a RF signal received at the pole to the second path to form a second RF transmitter chain.
    Type: Grant
    Filed: April 2, 2014
    Date of Patent: March 15, 2016
    Assignee: BROADCOM CORPORATION
    Inventors: Seppo Olavi Rousu, Samuel Vehkalahti, Jarkko Petteri Mykkanen
  • Patent number: 9148326
    Abstract: A system and method for estimating a channel in a wireless receiver is disclosed. The method comprises receiving a block of “n” transmitted symbols, the symbols including pilot symbols and “d” data symbols, estimating a channel using the pilot symbols to create a channel estimate, choosing a group of “m” strongest symbols from the “d” received symbols, compensating the “m” strongest symbols using the channel estimate to create a group of “m” compensated symbols, re-estimating the channel using the group of “m” compensated symbols and pilot symbols; and either (1) repeating the steps of choosing a group of “m” strongest symbols, compensating the group of “m” strongest symbols and re-estimating the channel, or (2) using a latest channel estimate to compensate all symbols within the block. The system comprises a wireless receiver having an estimator programmed according to the method.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: September 29, 2015
    Assignee: AT&T Mobility II LLC
    Inventors: Titus Lo, Ruifeng Wang
  • Patent number: 9137686
    Abstract: The present invention relates to an arrangement, a communication network node and method for cell outage compensation in a communication network system comprising a plurality of communication network nodes (15a, 15b) communicating with user equipments (18), where each network node (15a, 15b) is serving at least one cell (19a, 19b), in which the user equipments (18) are situated, via two or more reconfigurable physical antennas (15a1, 15a2, 15b1, 15b2) configured according to an initial antenna parameter set. Cell outage is determined in a network node (15b). One of the reconfigurable physical antennas (15a2) of at least one cell (19a) is made temporarily available for compensation. The available antenna (15a2,) is prepared for compensation by reconfiguring one or more antenna parameters thereof in accordance with a compensating antenna parameter set. A new compensating cell (20) is transmitted from the prepared antenna (15a2).
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: September 15, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Mehdi Amirijoo, Mikael Coldrey, Pål Frenger, Fredrik Gunnarsson, Johan Moe
  • Patent number: 9026070
    Abstract: A low-power diversity receiver includes at least two receive paths, each of which is designated as a primary or secondary receive path. A primary receive path is compliant with system requirements (e.g., IS-98D requirements). A secondary receive path is not fully compliant with the system requirements and is designed for lower power, less area, and lower cost than the primary receive path. For a multi-antenna receiver, the two receive paths may be used to simultaneously process two received signals from two antennas. For a single-antenna receiver, either the primary or secondary receive path is selected, e.g., depending on whether or not large amplitude “jammers” are detected, to process a single input signal from one antenna. The receiver may include additional receive paths for additional frequency bands and/or GPS.
    Type: Grant
    Filed: November 18, 2004
    Date of Patent: May 5, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Charles J. Persico, Kevin Gard, Gurkanwal Kamal Sahota, Shinichi Miyazaki, Steven C. Ciccarelli
  • Patent number: 9014648
    Abstract: A multi-mode receiver is disclosed that is reconfigurable to share a local oscillator signal in diversity mode to save power consumption. In an exemplary embodiment, an apparatus includes a primary receiver having a primary mixer configured to down-convert a primary signal and a secondary mixer configured to down-convert a secondary signal in carrier aggregation mode. The apparatus also includes a supplemental mixer that uses a shared primary local oscillator (LO) signal generated by a shared primary frequency synthesizer in diversity mode to reduce power consumption. The apparatus further includes a controller configured to disable the secondary mixer and to enable the supplemental mixer to down-convert the secondary signal when operating in the diversity mode.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: April 21, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Prasad Srinivasa Siva Gudem, Li Liu, Frederic Bossu
  • Patent number: 9002955
    Abstract: A computing network, including: a plurality of peer computing devices including code, which when executed by a peer computing device causes the executing peer computing device to cooperate with at least one other of the peer computing devices; at least one server including code, which when executed by the at least one server locates at least one of the peer computing devices; and at least one mediator including code, which when executed by the at least on mediator collects charging information from at least some of the peer computing devices; wherein, the peer computing devices, at least one sever and at least one mediator are communicatively coupled via an at least carrier-grade telecommunications network being suitable for enhancing cooperation among the cooperating ones of the peer computing devices relative to best-efforts communications among the cooperating ones of the peer computing devices.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: April 7, 2015
    Assignees: ZTE Corporation, ZTE USA Inc.
    Inventors: Larry Shaoyan Ma, Weiyong Zhu, Li Mo
  • Patent number: 8995921
    Abstract: A method for taking measurements with a smart antenna in a wireless communication system having a plurality of STAs begins by sending a measurement request from a first STA to a second STA. At least two measurement packets are transmitted consecutively from the second STA to the first STA. Each measurement packet is received at the first STA using a different antenna beam. The first STA performs measurements on each measurement packet and selects an antenna beam direction based on the measurement results.
    Type: Grant
    Filed: December 27, 2004
    Date of Patent: March 31, 2015
    Assignee: InterDigital Technology Corporation
    Inventors: Ana Lucia Iacono, Arty Chandra, Inhyok Cha, Paul Marinier, Vincent Roy
  • Patent number: 8989691
    Abstract: Power supply rejection in a single-ended receiver, through impedance balancing, is described. The single-ended receiver includes a first low noise amplifier and a second low noise amplifier. The single-ended receiver also includes a multi-port coupled transformer that outputs a differential signal. The multi-port coupled transformer includes a first primary coil that is coupled to an output of the first low noise amplifier and a second primary coil. The single-ended receiver also includes balancing impedances at the output of each of the low noise amplifiers. These impedances can be configured such that the on impedance of the first low noise amplifier equals the combined impedance of the off impedance of the second low noise amplifier and the balancing impedance. This balancing of impedances on the first and second primary coils results in power supply rejection of noise and spurious signals.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: March 24, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Ojas M Choksi, Wei Zhuo
  • Publication number: 20150065073
    Abstract: Systems and methods for antenna selection in a wireless terminal with two radios are provided. Signals received using first and second antennas are demodulated by first and second modems according to first and second protocols. A receive path between the second antenna and the second modem can be controlled to receive signals according to the first protocol. A performance measure of demodulating, according to the first protocol, a signal received using the second antenna is determined. The performance measure may be determined using a mirror module in the second modem or using a search module in the first modem. The wireless terminal switches antennas so that the first modem demodulates a signal received using the second antenna, if the performance measure for using the second antenna is such that the switch would improve performance of the first modem.
    Type: Application
    Filed: August 30, 2013
    Publication date: March 5, 2015
    Applicant: QUALCOMM Incorporated
    Inventors: Hongbo YAN, Francis M. Ngai, Jafar Mohseni, Daniel Fred Filipovic
  • Patent number: 8971836
    Abstract: Disclosed is a method of adjusting the receive frequency of a radio frequency (RF) receiver die (4), the RF receiver die (4) comprising a mixer (8) with an associated local oscillator (10) and a first low-noise amplifier (6) arranged to operate over a first frequency range, the method comprising affixing a second low-noise amplifier (40) arranged to operate over a second frequency range to the RF receiver die (4).
    Type: Grant
    Filed: May 21, 2013
    Date of Patent: March 3, 2015
    Assignee: Telekom Malaysia Berhad
    Inventors: Syahrizal Salleh, Mohamad Faizal Hashim, Zulkalnain Mohd Yussof
  • Patent number: 8885696
    Abstract: Systems, methods, and devices enable spectrum management by identifying, classifying, and cataloging signals of interest based on radio frequency measurements. In an embodiment, signals and the parameters of the signals may be identified and indications of available frequencies may be presented to a user. In another embodiment, the protocols of signals may also be identified. In a further embodiment, the modulation of signals, data types carried by the signals, and estimated signal origins may be identified.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: November 11, 2014
    Assignee: DGS Global Systems, Inc.
    Inventors: Gabriel R. Garcia, Daniel Carbajal
  • Patent number: 8873482
    Abstract: A network virtualization method in a wireless communication system includes aggregating sets of uplink and downlink flows on a cellular basestation into groups; allocating wireless resources to each of the sets as a respective basestation slice; and enabling each of the sets of flows to be under a distinct administrative entity.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: October 28, 2014
    Assignee: NEC Laboratories America, Inc.
    Inventors: Ravindranath Kokku, Rajesh Mahindra, Honghai Zhang, Sampath Rangarajan
  • Patent number: 8824986
    Abstract: The invention relates to a multichannel radio-frequency receiver (1) for electromagnetic waves, having a radio-frequency analogue section (2) which has an input (3) for an electrical signal of a receiving device (4), and having an lower-frequency section (8, 9) which is connected downstream from the radio-frequency analogue section (2) and has a plurality of parallel channels (6b, 6c; 7b, 7c) for respectively different signal strengths and an evaluation circuit, in which a signal divider (5) is provided in the radio-frequency analogue section (2) in order to split the signal in accordance with a predeterminable division ratio into signal elements which can be supplied to radio-frequency analogue channels (6a, 7a), downstream from which the channels (6b, 6c; 7b, 7c) of the lower-frequency section (8, 9) are respectively connected, and the channels (6b, 6c; 7b, 7c) of the lower-frequency section (8, 9) each have an evaluation circuit for detection of the phase and amplitude of the respective signal element.
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: September 2, 2014
    Assignee: Selex ES GmbH
    Inventors: Frank Gekat, Dieter Rühl
  • Patent number: 8824536
    Abstract: Systems, methods, and devices enable spectrum management by identifying, classifying, and cataloging signals of interest based on radio frequency measurements. In an embodiment, signals and the parameters of the signals may be identified and indications of available frequencies may be presented to a user. In another embodiment, the protocols of signals may also be identified. In a further embodiment, the modulation of signals, data types carried by the signals, and estimated signal origins may be identified.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: September 2, 2014
    Assignee: DGS Global Systems, Inc.
    Inventors: Gabriel R. Garcia, Daniel Carbajal
  • Patent number: 8798565
    Abstract: A receiver includes an antenna array that generates received signals from a first remote transmitter and a second remote transmitter, the antenna array having a beam pattern that is controllable based a control signal. A plurality of receiver sections process the received signals to generate down-converted signals. A receiver processing module, generates the control signal to control the beam pattern to a first pattern during a first time period for reception from the first remote transmitter, generates a first reception estimate based on the down-converted signals during the first time period, generates the control signal to control the beam pattern to a second pattern during a second time period for reception from the second remote transmitter, generates a second reception estimate based on the down-converted signals during the second time period, and generates inbound data based on the first reception estimate and the second reception estimate.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: August 5, 2014
    Assignee: Broadcom Corporation
    Inventor: Jason A. Trachewsky
  • Patent number: 8761701
    Abstract: Method, apparatus and computer program product measuring signals received through multiple antennas in a mobile wireless device is described. Signals received through at least one of a primary antenna and a secondary antenna, during each cycle in a series of discontinuous reception cycles, is measured. The mobile wireless device switches between the primary and secondary antennas based on comparing the moving averages of the measured received signals to pre-determined thresholds. When unable to decode successfully a signal received on the primary antenna, the mobile wireless device switches to decode signals received on the secondary antenna.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: June 24, 2014
    Assignee: APPLE Inc.
    Inventors: Venkatasubramanian Ramasamy, Gaurav R. Nukala
  • Patent number: 8744394
    Abstract: A system including a diversity module and an antenna selection module. The diversity module is configured to measure (i) a first signal-to-noise ratio and a first error rate associated with a first antenna, and (ii) a second signal-to-noise ratio and a second error rate associated with a second antenna. The antenna selection module is configured to select the first antenna or the second antenna by comparing (i) the first signal-to-noise ratio to the second signal-to-noise ratio, and (ii) the first error rate to the second error rate.
    Type: Grant
    Filed: January 7, 2013
    Date of Patent: June 3, 2014
    Assignee: Marvell International Ltd.
    Inventors: Milind Kopikare, Brian Bosso, Partho Mishra
  • Patent number: 8724748
    Abstract: A wireless communication terminal includes an antenna selecting unit that selects, for each packet, an antenna for use in receiving signals from among a plurality of a plurality of antennas; a packet-destination judging unit that judges whether a packet obtained by demodulating a signal received by the receiving antenna selected by the antenna selecting unit is destined for the wireless communication terminal; and a stand-by-antenna determining unit that determines a stand-by antenna for use in receiving a packet to be received next based on a result of selection made by the antenna selecting unit and a result of judgment made by the packet-destination judging unit.
    Type: Grant
    Filed: May 7, 2010
    Date of Patent: May 13, 2014
    Assignee: Ricoh Company, Limited
    Inventors: Mayuko Ueno, Syuji Kubota
  • Patent number: 8699605
    Abstract: A receiving method and apparatus in a Multiple-Input Multiple-Output (MIMO) communication system are provided. The method includes receiving reception signals through a plurality of reception antennas, grouping symbols corresponding to the reception signals, respectively, into a preset number of groups, and rearranging symbols of the respective groups, transforming the reception signals by applying QR decomposition to the reception signals, sequentially canceling interference due to each of total possible candidate symbols for a first symbol based on an order of the rearranged symbols in the transformed reception signals, determining a portion of the total possible candidate symbols to be a candidate symbol set for each remaining symbol, except for the first symbol, using the interference-canceled reception signal, and determining log-likelihood ratio values of the first symbol, which are to be used upon decoding the received signals, using candidate symbols for the first symbol and each remaining symbol.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: April 15, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Joo-Yeol Yang
  • Patent number: 8699967
    Abstract: A method for uplink transmit diversity enhancement is disclosed. A subset of two or more potential uplink transmission configurations are determined. A subset of potential uplink transmission configurations is evaluated. An uplink transmission configuration is selected based on the evaluation. Metrics of the selected uplink transmission configuration are determined. The selected uplink transmission configuration is applied for an extended use period.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: April 15, 2014
    Assignee: QUALCOMM Incorporated
    Inventor: Jason Frank Hunzinger
  • Patent number: 8674808
    Abstract: A dual mode interrogation is carried out by sending narrow band radio frequency interrogation (RFID) signal for narrow band RFID communication units, the narrow band signal comprising substantially continuous periods, and by sending a high data rate RFID interrogation signal during the substantially continuous periods of the narrow band RFID signal so that two different types of RFID communication units are interrogated substantially simultaneously.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: March 18, 2014
    Assignee: Nokia Corporation
    Inventors: Joni Jorma Marius Jantunen, Jaakko Valtteri Varteva, Juha-Matti Mikael Tuupola
  • Patent number: 8644427
    Abstract: A radio frequency receiver with dual band reception and dual analog-to-digital converters (ADCs) can be configured to operate in a single channel mode or a dual channel mode to receive a single RF input channel or two RF input channels at the same or different frequency bands. In the single channel mode, the dual ADCs can be used to improve the performance of the receiver for the single input signal or the dual ADCs can be configured for reduced power consumption. In the dual channel mode, the dual ADCs operate on the individual RF input signals to realize dual band reception. In one embodiment, the receiver is configured for asymmetric dual band reception to receive a wideband input signal on a first input signal path and a narrow band input signal on a second input signal path.
    Type: Grant
    Filed: August 10, 2011
    Date of Patent: February 4, 2014
    Assignee: SiGear Europe Sarl
    Inventors: Alain-Serge Porret, Friederich Mombers, Melly Thierry
  • Patent number: 8620245
    Abstract: A mobile device having at least two antennas can circumvent transmission problems caused by a user's grasp of the device. A sensor unit is disposed at a specific location of a device body and creates a sensor signal by detecting the contact or proximity of a particular object such a user's hand. When receiving the sensor signal, a control unit selects one of the antennas depending on the sensor signal and establishes a communication path based on the selected antenna. The selected antenna involved in the communication path is typically relatively free from degradation in transmission caused by a user's grasp of the mobile device. The radiation property of the mobile device, which may be degraded due to a user's grasp, can exhibit relatively little or no degradation as compared to the typical degradation in performance when the mobile device is being grasped.
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: December 31, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chang Gwon Chung, Hyun Kim, Myeong Hwa Kim, Geun Woo Kim, Kyung Hwan Jo, Doo Na Kim
  • Patent number: 8606196
    Abstract: A method may include reconfigurably enabling one of a first downconverter and a second converter and disabling the other the second downconverter, wherein the first downconverter and the second downconverter are integral to a receiver unit of as wireless communications terminal. The method may also include frequency downconverting received wireless communication signals by the enabled downconverter. The method may also include processing the downconverted wireless communication signals by a primary path if the first downconverter is enabled, and processing the downconverted wireless communication signals by a diversity path if the second downconverter is enabled.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: December 10, 2013
    Assignee: Intel IP Corporation
    Inventors: Mohammed Shah Alam, Manish N. Shah
  • Patent number: 8576937
    Abstract: A transmission apparatus in a Multiple Input Multiple Output (MIMO)-based wireless communication system. The transmission apparatus includes at least two antenna groups each having at least two antennas, wherein the antenna groups are spaced apart by a first distance and transmit antennas in each antenna group are spaced apart by a second distance which is shorter than the first distance. A channel coding and modulation unit channel-codes and modulates a desired transmission data stream. A precoding unit precodes the channel-coded and modulated signal separately for each antenna group and each antenna in the same antenna group. Thereafter, a transmission processing unit transmission-processes the output signal from the precoding unit.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: November 5, 2013
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Jin-Kyu Han, Clerckx Bruno, Ju-Ho Lee
  • Patent number: 8559545
    Abstract: A channel information feedback method adapted in a receiving end of a multiuser multiple input multiple output (MU MIMO) system has following steps. A subspace matrix and a magnitude matrix related to a transmitting end of the MU MIMO system are obtained according to a channel matrix corresponding to the receiving end. A first quantization is performed on the subspace matrix to generate a quantized subspace matrix. A second quantization is performed on an auxiliary information matrix to generate a quantized auxiliary information matrix, where the auxiliary information matrix is corresponding to the magnitude matrix and a residual subspace matrix, and the residual subspace matrix includes residual subspace information after the first quantization is performed on the subspace matrix. The quantized subspace matrix and the quantized auxiliary information matrix are fed back to the transmitting end through an uplink channel.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: October 15, 2013
    Assignee: Industrial Technology Research Institute
    Inventors: Chun-Yao Chen, Hsuan-Jung Su
  • Patent number: 8553158
    Abstract: A broadcast receiving apparatus includes a channel scanning unit configured to perform a channel scanning process of scanning broadcast channels to be received, determining on each scanned broadcast channel whether the channel is receivable, and registering a broadcast channel determined as receivable, a function setting unit configured to perform settings of various functions, and a control unit configured to control the channel scanning unit and the function setting unit so that the channel scanning process is performed simultaneously with the settings of the various functions.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: October 8, 2013
    Assignee: Sony Corporation
    Inventor: Kensuke Ishii
  • Patent number: 8543076
    Abstract: A wireless communication device is adaptively operated in a wireless communication network. The wireless communication device includes a receiver subsystem having a total number of available receive chains RT. Current signal conditions are determined at the wireless communication device for signals transmitted by a given base station over the wireless communication network. Current system information regarding the wireless communication device and regarding the wireless communication network are determined. Based on the current signal conditions and the current system information, a minimum number of receive chains needed to receive and successfully decode data transmitted by the base station over the wireless communication network is determined. Specific ones of the total number of available receive chains RT are selected such that the minimum number of receive chains needed to receive and successfully decode the transmitted data is selected.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: September 24, 2013
    Inventors: Bhaskar Patel, Arumugam Govindswamy
  • Publication number: 20130225094
    Abstract: Methods and apparatus for adaptively adjusting receiver operation for e.g., power optimization. In one embodiment, operation during diversity operation is adaptively adjusted. Diversity techniques consume significantly more power than non-diversity operation. However, the performance gain from receiver diversity is not always predictable. Consequently, in one embodiment, a device evaluates the overall performance gain contributed by diversity operation and, where the performance gain is insignificant or inadequate, the device disables diversity operation. In one implementation, the device can operate in a static single antenna mode, a dynamic single antenna mode and a dynamic multiple antenna mode.
    Type: Application
    Filed: February 13, 2013
    Publication date: August 29, 2013
    Applicant: Apple Inc.
    Inventor: Apple Inc.
  • Patent number: 8521232
    Abstract: Methods and apparatus that relate to the display of network availability and quality of service (QoS) to a user of a multiple mode communication device are disclosed. An example method includes measuring, at a communication device, a quality of service metric from a call registration response message for a call, the call registration response message being a response to a call registration message routed through a first communication provider to a second communication provider, comparing the quality of service metric to a time interval in which the call registration response message is to expire, and selectively displaying a representation of the quality of service metric for the first communication provider to a user at the communication device based on the comparison.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: August 27, 2013
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Satish Parolkar, Anil Doradla
  • Patent number: 8521166
    Abstract: Disclosed is a system and a method of signal transmission/reception by a mobile station in a wireless communication system. The method includes: transmitting a first sub-band preparation indicator, which indicates that the mobile station has been prepared for transmission/reception of a signal through a first sub-band, to a base station through a primary band; transmitting a first sub-band failure indicator to the base station through the primary band upon detecting failure in transmitting the first sub-band preparation indicator; receiving sub-band information on a second sub-band, which is different from the first sub-band, from the BS through the primary band; and acquiring synchronization with the second sub-band, so as to enable transmission/reception of a signal through the second sub-band based on the sub-band information.
    Type: Grant
    Filed: March 2, 2009
    Date of Patent: August 27, 2013
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Hyun-Jeong Kang, Won-Il Roh, Jae-Hee Cho, Jung-Je Son, Byung-Wook Jun, Sung-Jin Lee, Jae-Hyuk Jang, Young-Bin Chang, Chang-Yoon Oh, Yeong-Moon Son
  • Patent number: 8509843
    Abstract: In order to transmit data via a plurality of types of communication networks in accordance with the communication environment at the time of data transmission, a mobile telephone, which is capable of being connected to a plurality of types of mobile communication networks, is provided with a detector for detecting the communication status of a mobile communication network based on a control signal transmitted from this mobile communication network; a storage unit for storing the detected communication status; an allocation unit for allocating data to each connected mobile communication network based on the amount of the data addressed to another communication apparatus and the stored communication status; and a transmitter for transmitting the data that has been allocated to each mobile communication network to the respective mobile communication networks.
    Type: Grant
    Filed: November 13, 2008
    Date of Patent: August 13, 2013
    Assignee: NTT DoCoMo, Inc.
    Inventors: Masaru Takahashi, Hiroshi Nakamura
  • Patent number: RE45273
    Abstract: A transceiver system includes a first section coupled to a first antenna, a second section coupled to a second antenna, and a radio frequency (RF) unit. The first section includes a transmit path and a first receive path for a first (e.g., GSM) wireless system, a transmit path and a first receive path for a second (e.g., CDMA) wireless system, and a transmit/receive (T/R) switch that couples the signal paths to the first antenna. The second section includes a second receive path for the first wireless system and a second receive path for the second wireless system. The first and second receive paths for the first wireless system are for two frequency bands. The first and second receive paths for the second wireless system are for a single frequency band and provide receive diversity. The transceiver system may include a GPS receive path coupled to a third antenna.
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: December 2, 2014
    Assignee: QUALCOMM Incorporated
    Inventor: Robert Lloyd Robinett