Diversity (frequency Or Time) Patents (Class 375/347)
  • Patent number: 10320498
    Abstract: The influence of a multipath noise and an adjacent interference noise on the quality of reception of a broadcast is indexed in accordance with a received electric field strength level, and a broadcast station which is a station selection target is searched for using this index value.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: June 11, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masa Yamashima, Kazunari Yamada, Daisuke Saitou
  • Patent number: 10320523
    Abstract: A method for detecting a sent sequence, a receiver, and a receiving device in order to simplify an algorithm for detecting a sent sequence and improve detection efficiency. The method for detecting a sent sequence includes determining a maximum possible candidate value of each element in N elements of a received element sequence to obtain N maximum possible candidate values, where N is a positive integer, determining state sequences corresponding to the N maximum possible candidate values as reserved sequences to obtain N groups of reserved sequences, performing likelihood computation on the N groups of reserved sequences, and setting a reserved sequence that is in the N groups of reserved sequences and is most consistent with the element sequence as a detected sent sequence.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: June 11, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Bentao Wu, Bangning Mao
  • Patent number: 10313052
    Abstract: A method and relay for relaying messages. The relay includes tests reliability relating solely to messages estimated with error and taken in their form prior to error detection in order to be able to separate messages that are reliable and messages that are not reliable. The relay also includes a shaper unit having a channel interleaver and a modulator taking account only of the messages estimated without error and of those messages estimated with error that are reliable, this shaping being performed in soft form if at least one message estimated with error successfully passes the reliability test.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: June 4, 2019
    Assignee: ORANGE
    Inventors: Raphael Visoz, Abdulaziz Mohamad, Antoine Berthet
  • Patent number: 10312979
    Abstract: A wireless access point device wirelessly communicates with a plurality of wireless client devices. The wireless access point includes a central processor subsystem and a plurality of transceiver devices each including a plurality of antennas, and a plurality of radio transceivers, each of the plurality of transceiver devices configured for deployment throughout a coverage area, each transceiver device being connected to the central processor subsystem via a respective cable. The central processor subsystem distributes in-phase and quadrature baseband samples across the plurality of transceiver devices associated with traffic to be transmitted and received via the plurality of transceiver devices in one or more frequency bands so as to synthesize a wideband multiple-input multiple-output transmission channel and a wideband multiple-input multiple-output reception channel. The access point transmit and receive functions are “split” or partitioned across the plurality of transceivers devices.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: June 4, 2019
    Assignee: Cisco Technology, Inc.
    Inventors: Brian D. Hart, Paul J. Stager, David Kloper, Jie Cheng Jiang
  • Patent number: 10305786
    Abstract: A method of processing messages within a distributed computer system in order to compensate for latency effects within the distributed computer system, the distributed computer system comprising a plurality of user devices and a message processing device, the method comprising: receiving a message from a user device at a message management device; determining if the received message corresponds to a message type that requires compensation for latency delays; and, in the event that the message does not require compensation, forwarding the message to the message processing device; and, in the event that the message does require compensation for latency effects, calculating a randomized delay period, and holding the message at the message management device for the calculated delay period and subsequently forwarding the message to the message processing device.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: May 28, 2019
    Assignee: Maven Securities Holding Limited
    Inventor: Richard Aked
  • Patent number: 10292162
    Abstract: A user service mode selection method in the case of 3D beams, a pilot frequency information sending method and apparatus are disclosed. The selection method includes: comparing the total number of the users to be served with that of scheduling units; selecting a single-user service mode for each user when the total number of the users to be served is smaller than that of scheduling units; selecting J user groups meeting a preset condition to adopt a multi-user service mode when the total number of the users to be served is not smaller than that of scheduling unit, J is an integer greater than 1, and 2J is an integer not greater than the total number of the users to be served; one time-frequency resource only corresponds to one beam configured for communication in the single-user service mode but at least two beams in the multi-user service mode.
    Type: Grant
    Filed: September 23, 2014
    Date of Patent: May 14, 2019
    Assignee: ZTE Corporation
    Inventors: Meiling Ding, Fan Shi
  • Patent number: 10270640
    Abstract: Various systems and methods are provided for channel estimation. These systems and methods (a) determine a coherence bandwidth for the channel, (b) adapt the channel estimation based on the coherence bandwidth, and (c) perform channel estimation by transmitting a channel estimation symbol over a channel. In some embodiments, the channel estimation is adapted based on the coherence bandwidth. This may include selecting a number of channel estimation symbols to transmit in a packet. Additionally, the number of channel estimation symbols transmitted in a packet can be selected by increasing the number of channel estimation symbols when the coherence bandwidth of the channel is high or decreasing the number of channel estimation symbols when the coherence bandwidth of the channel is low.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: April 23, 2019
    Assignee: Entropic Communications, LLC
    Inventor: Arndt J. Mueller
  • Patent number: 10268406
    Abstract: An information storage device is a device that communicates over a network with another device that is used by another user different from an own user who uses an own device, and includes a storage unit including a first storage area available to the own user and a second storage area available to the other user, an information output unit that outputs information of the own user stored in the first storage area to the other device over the network, an information writing unit that stores information of the other user output by the other device over the network, in the second storage area, and a use control unit that controls whether the second storage area is available to the own user on the basis of an instruction of the other user.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: April 23, 2019
    Assignee: NIKON CORPORATION
    Inventors: Takeaki Sugimura, Kazuyuki Kazami, Atsushi Tanaka, Soichiro Tsuboi, Genshi Yoshioka, Daisuke Yuki
  • Patent number: 10263687
    Abstract: A phase-diversity radio-frequency receiver, including two tuners tuned to the same frequency in order to produce two intermediate frequency signals, a combiner capable of implementing a constant modulus algorithm, CMA, in order to combine the two intermediate frequency signals into a single signal, a controller capable of transforming the single signal into a final signal having a constant envelope, the controller being parametrized by a control coefficient defining the control convergence speed, the control coefficient being recalculated permanently in accordance with at least one multi-path level.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: April 16, 2019
    Assignees: Continental Automotive France, Continental Automotive GmbH
    Inventor: Jean-Christophe Grzeskowiak
  • Patent number: 10256858
    Abstract: In one embodiment, an apparatus includes: a first radio receiver to receive and downconvert a first radio frequency (RF) signal to a first digital signal; a second radio receiver to receive and downconvert a second RF signal to a second digital signal; a correlation circuit to receive the first and second digital signals and determine a correlation between the first and second digital signals; a weight calculation circuit to determine a first weight value and a second weight value based at least in part on the correlation; and a combiner circuit to combine the first and second digital signals according to the first and second weight values.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: April 9, 2019
    Assignee: Silicon Laboratories Inc.
    Inventor: Alexander August Arthur Hakkola
  • Patent number: 10225297
    Abstract: A transmitting apparatus is provided. The transmitting apparatus includes: an L1 signaling generator configured to generate L1 signaling including first information and second information; a frame generator configured to generate a frame including a payload including a plurality of sub frames; and a signal processor configured to insert a preamble including the L1 signaling in the frame and transmit the frame. The first information includes information required for decoding a first sub frame among the plurality of sub frames. Therefore, a processing delay in a receiving apparatus is reduced.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: March 5, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jung-hyun Park, Min-ho Kim, Sung-woo Park, Sung-kyu Jung, Chang-hoon Choi, Doo-chan Hwang
  • Patent number: 10211877
    Abstract: An antenna diversity circuit having a plurality of processing chains including first and second processing chains configured to communicate with a first antenna, and process signals for first and second carriers, respectively, and third and fourth processing chains configured to communicate with a second antenna, and process signals for the first and second carriers, respectively; and a dynamic antenna diversity controller configured to activate one or more of the plurality of processing chains based on a predetermined set of criteria.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: February 19, 2019
    Assignee: Intel Corporation
    Inventor: Thorsten Clevorn
  • Patent number: 10200153
    Abstract: There is provided a decoder for sequentially decoding a data signal received through a transmission channel in a communication system, said data signal carrying transmitted symbols, said decoder comprising a symbol estimation unit (301) configured to determine estimated symbols representative of the transmitted symbols carried by the received signal from information stored in a stack, said symbol estimation unit (301) being configured to iteratively fill the stack by expanding child nodes of a selected node of a decoding tree comprising a plurality of nodes, each node of the decoding tree corresponding to a candidate component of a symbol of said data signal and each node being assigned a metric, the stack being filled at each iteration with a set of expanded child nodes and being ordered by increasing values of the metrics assigned to the nodes, the selected node for each iteration corresponding to the node being assigned the lowest metric in the stack, the decoder comprising a metric determination unit (302
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: February 5, 2019
    Assignee: INSTITUT MINES-TELECOM
    Inventors: Asma Mejri, Mohamed-Achraf Khsiba, Ghaya Rekaya Ben-Othman
  • Patent number: 10193712
    Abstract: A method for processing a receive radio signal is provided. The method may include receiving in a mobile device a receive radio signal, equalizing the receive radio signal using a first equalizer to generate a first equalized receive radio signal, equalizing the receive radio signal using a second equalizer to generate a second equalized receive radio signal, re-synthesizing a transmit signal from the second equalized receive radio signal, calculating a subtraction signal based on the re-synthesized transmit signal, and subtracting the subtraction signal from the equalized receive radio signal.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: January 29, 2019
    Assignee: Intel IP Corporation
    Inventors: Dirk Waldhauser, Clemens Buchacher
  • Patent number: 10194339
    Abstract: Methods and systems are provided for enabling a base station to receive signals and synchronization information from neighboring base stations over a frequency band designated for transmissions to mobile devices. In embodiments, a cancellation signal is used to cancel antenna overload resulting from a base station's own transmission. By negating antenna overload, the base station may listen for synchronization signals output by neighboring base stations over the frequency band designated for transmission to mobile devices, such as a downlink band, for example. In embodiments, synchronization signals are used by the base station and/or a server to detect when synchronization failures occur at the base station and/or neighboring base stations. Synchronization signals from a neighboring base station may be used to re-synchronize a base station that have experience such a failure, in some embodiments.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: January 29, 2019
    Assignee: Sprint Communications Company L.P.
    Inventors: Timothy Hugh Pearson, Roger Danforth Bartlett, Steven Kenneth Guthrie
  • Patent number: 10187129
    Abstract: Disclosed are a channel state feedback information determination method, a terminal, a base station and a communication system. The method includes that: a channel state is measured to form a measurement result; when a Rank Indicator (RI) is 2, a precoding matrix is formed according to the measurement result and a precoding codebook matrix model W; and channel state feedback information is formed according to the precoding matrix. The disclosure further discloses a computer storage medium.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: January 22, 2019
    Assignee: ZTE Corporation
    Inventors: Jing Zhao, Yijian Chen, Zhaohua Lu, Huahua Xiao
  • Patent number: 10181934
    Abstract: The present disclosure provides NOMA between a unicast PDSCH signal and a SC-PTM signal. The apparatus receives, at a first UE, a combined signal including a first data transmission and a second data transmission. The apparatus also determines at the first UE, a first set of symbols for the first data transmission intended for the first UE. The apparatus further determines at the first UE, a second set of symbols for the second data transmission intended for a second UE. In an aspect, the first data transmission and the second data transmission include at least one overlapping resource element. In another aspect, the first set of symbols and the second set of symbols differ by at least one symbol. The apparatus also decodes, at the first UE, the first data transmission, based at least in part on the determined first set of symbols and the determined second set of symbols.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: January 15, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Wanshi Chen, Peter Gaal
  • Patent number: 10142038
    Abstract: A MIMO signal generator is adapted to generate a MIMO signal is provided. The MIMO signal generator comprises a signal generator, a signal divider and a frequency shifter. The signal generator is adapted to generate a plurality of frequency shifted partial MIMO signals within a first signal generator output signal. The frequency shifted partial MIMO signals being arranged on the frequency axis in a non-overlapping manner. The signal divider is adapted to divide the first signal generator output signal into a plurality of signal paths. The frequency shifter preferably comprises a frequency shifting device in at least one of the plurality of signal paths. The frequency shifting devices are adapted to shift the frequencies of the plurality of frequency shifted partial MIMO signals to a joint carrier frequency, resulting in a plurality of partial MIMO signals, forming the MIMO signal.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: November 27, 2018
    Assignee: ROHDE & SCHWARZ GMBH & CO. KG
    Inventors: Corbett Rowell, Vincent Abadie, Werner Kehlenbach
  • Patent number: 10129010
    Abstract: Embodiments of a dual-mode radio system are disclosed. In one embodiment, the radio system includes a first radio unit including a transmitter, a receiver, an antenna, and switching circuitry adapted to couple either an output of the transmitter of the first radio unit or an input of the receiver of the first radio unit to the antenna of the first radio unit. In addition, the radio system includes a second radio unit including an antenna and either a transmitter having an output coupled to the antenna of the second radio unit, a receiver having an input coupled to the antenna of the second radio unit, or both a transmitter having an output selectively coupled to the antenna of the second radio unit and a receiver having an input selectively coupled to the antenna of the second radio unit. The radio system has both a full-duplex mode and a half-duplex mode.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: November 13, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventor: Mark Wyville
  • Patent number: 10128920
    Abstract: An uplink channel response matrix is obtained for each terminal and decomposed to obtain a steering vector used by the terminal to transmit on the uplink. An “effective” uplink channel response vector is formed for each terminal based on its steering vector and its channel response matrix. Multiple sets of terminals are evaluated based on their effective channel response vectors to determine the best set (e.g., with highest overall throughput) for uplink transmission. Each selected terminal performs spatial processing on its data symbol stream with its steering vector and transmits its spatially processed data symbol stream to an access point. The multiple selected terminals simultaneously transmit their data symbol streams via their respective MIMO channels to the access point. The access point performs receiver spatial processing on its received symbol streams in accordance with a receiver spatial processing technique to recover the data symbol streams transmitted by the selected terminals.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: November 13, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: J. Rodney Walton, John W. Ketchum, John Edward Smee, Mark S. Wallace, Steven J. Howard
  • Patent number: 10122566
    Abstract: It is proposed a method for delay spread classification of an orthogonal frequency-division multiplexing signal (multiplexing signal), and a receiving device and a telecommunication device connected thereto, the multiplexing signal comprising at least a first multiplexing symbol comprising at least two first reference symbols in the frequency domain, the method comprising: receiving at least the first multiplexing symbol; demodulating at least the first reference symbols of the first multiplexing symbol; determining at least a first autocorrelation value by autocorrelating the demodulated first reference symbols in the frequency domain; computing the filtered output energy of the autocorrelation and classifying the delay spread by mapping the ratio of the output energy for the filters.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: November 6, 2018
    Assignee: Intel IP Corporation
    Inventors: Javier Mauricio Paredes Riano, Andreas Bury
  • Patent number: 10090951
    Abstract: A method and apparatus for transmitting a notification about broadcasting services in a broadcasting system are provided. A method of a network entity includes detecting a notification event about a broadcasting service, the notification event including a change of a service guide of the broadcasting service; generating a notification message about the notification event; determining which channel is used for a transmission of the notification message; and transmitting the notification message to a terminal or a group of terminals over the determined channel. The channel used for the transmission of the notification message is determined based on whether the notification message is transmitted over a broadcast channel of a broadcast network or over an interaction channel of an interaction network. The service guide is generated based on service guide related information provided by a service provider of the broadcasting service.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: October 2, 2018
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Sung-Oh Hwang, Eun-Jung Kim, Joon-Goo Park
  • Patent number: 10050653
    Abstract: Circuits and methods related to switchless carrier aggregation in radio-frequency receivers. In some embodiments, a carrier aggregation (CA) circuit can include a first filter configured to allow operation in a first frequency band, and a second filter configured to allow operation in a second frequency band. The CA circuit can further include a first signal path implemented between the first filter and an output node, with the first signal path including a plurality of amplification stages configured to amplify a first radio-frequency (RF) signal. The first signal path can be substantially free of switches. The CA circuit can further include a second signal path implemented between the second filter and the output node, with the second signal path including a plurality of amplification stages configured to amplify a second RF signal. The second signal path can be substantially free of switches.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: August 14, 2018
    Assignee: Skyworks Solutions, Inc.
    Inventor: Ibrahim Engin Pehlivanoglu
  • Patent number: 10031165
    Abstract: Wireless charging methods, chargers and devices are disclosed, including a method of measuring wireless charging performance comprising transmitting a wireless charging signal, measuring a transmitted power of the wireless charging signal, receiving an indication of a received power from the wireless charging signal received by a device, and determining wireless charging performance based on the transmitted power and the indication of the received power.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: July 24, 2018
    Assignee: QUALCOMM Technologies International, LTD.
    Inventor: Anthony Lawrence McFarthing
  • Patent number: 10020863
    Abstract: A method for wireless communication includes monitoring a channel of a radio frequency spectrum band using at least a first receiver and a second receiver in parallel; determining, during the monitoring, at least a first received signal strength of a first receiver output of the first receiver, and a second received signal strength of a second receiver output of the second receiver; and selecting, based on the first received signal strength and the second received signal strength, one or both of the first receiver output or the second receiver output for use in decoding a candidate information signal of unknown signal strength. The first and second receivers are set to first and second fixed gain state providing the first and second receivers with first and second dynamic ranges. The second dynamic range partially overlaps the first dynamic range to provide the wireless device an extended dynamic range.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: July 10, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Victor Abramsky, Guy Wolf
  • Patent number: 10014900
    Abstract: Wireless communication devices (UEs) may include multiple receive (RX) chains and associated antennas, and at least one transmit (TX) chain co-located with one of the RX chains. The UE may track instant fading of the antenna gain(s) during reception of packets from an associated access point (AP) device to which the UE intends to transmit packets. The UE may also track long term antenna gain(s), using any packets received at the multiple RX chains within the UE. At a switching occasion, a decision is made by the UE whether to switch antennas. If the instant fading detection is based on packets received no later than a specified time period prior to the switching occasion, then the UE may make the switching decision based on the results of the instant fading tracking. Otherwise, the UE may make the switching decision based on the results of the long term antenna gain tracking.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: July 3, 2018
    Assignee: Apple Inc.
    Inventors: Xiaowen Wang, Syed Aon Mujtaba, Vinay R. Majjigi, Joonsuk Kim
  • Patent number: 10015590
    Abstract: A switching device is adapted for a true diversity receiver and contains: a control switch defined between two microcontrollers of two antennas and configured to switch RF wireless microphone signals so that the two microcontrollers execute a single-receiving dual true diversity program or a dual-receiving single true diversity program. The RF wireless microphone signals are received by the two antennas and are decoded to sound signals by two digital decoders respectively, and the sound signals are sent to two audio signal processors by a multiplexer which corresponds to the two microcontrollers to switch the sound signals of a single-receiving dual true diversity or a dual-receiving single true diversity. Thereafter, the sound signals are output by a sound signal mixer.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: July 3, 2018
    Assignee: Chiayo Electronics Co., Ltd.
    Inventor: Te-Wei Kung
  • Patent number: 10003365
    Abstract: Systems and methods for mitigating known interference at a receiving device are provided. A signal from a transmission source is received by a receiving device that is affected by an interference source. At least one of a first pilot signal associated with the transmission source and a second pilot signal associated with the interfering source is determined. The first pilot signal includes information broadcast from the transmission source and the second pilot signal includes information broadcast from the interference source. Interference caused by the interference source is mitigated from the received signal using at least one of the first pilot signal and the second pilot signal.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: June 19, 2018
    Assignee: Marvell World Trade Ltd.
    Inventors: Yakun Sun, Hui-Ling Lou
  • Patent number: 9974037
    Abstract: A system that incorporates the subject disclosure may include, for example, a device to perform operations including determining a target playback latency not less than a greater of a first playback latency of a streaming media signal at a first media processor and a second playback latency of the first media signal at a second media processor. The streaming media signal includes a first in-content reference. A coordinated playback time is determined according to the target playback latency. A buffer, when adjusted by a buffer value, causes the first in-content reference to be encountered at a coordinated time during playback by the first media processor, which results in a synchronized playback of the streaming media between the first and second media processors. Other embodiments are disclosed.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: May 15, 2018
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Keith Crowe, Dan Agostino, Filinto Duran
  • Patent number: 9954917
    Abstract: A transmitting apparatus is provided. The transmitting apparatus includes: an L1 signaling generator configured to generate L1 signaling including first information and second information; a frame generator configured to generate a frame including a payload including a plurality of sub frames; and a signal processor configured to insert a preamble including the L1 signaling in the frame and transmit the frame. The first information includes information required for decoding a first sub frame among the plurality of sub frames. Therefore, a processing delay in a receiving apparatus is reduced.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: April 24, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jung-hyun Park, Min-ho Kim, Sung-woo Park, Sung-kyu Jung, Chang-hoon Choi, Doo-chan Hwang
  • Patent number: 9941949
    Abstract: A method of managing wirelessly transmitted use-data in a wireless data transmission environment, the method comprising: Receiving the wirelessly transmitted use-data by a first receiver and estimating a reception quality of the use-data received by the first receiver by applying a quality criterion. In case the reception quality meets the quality criterion, the method moreover comprises using a second receiver for background scanning the wireless data transmission environment, and in case the reception quality does not meet the quality criterion, the method moreover comprises using the second receiver additionally for reception of the use-data, thus providing both receivers for a diversity reception of the use-data.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: April 10, 2018
    Assignee: NXP B.V.
    Inventor: Martin Kessel
  • Patent number: 9923665
    Abstract: A method includes receiving, by a first device from a second device, a plurality of encoded messages on a plurality of transmission time intervals (TTIs), where the plurality of encoded messages are forward error correction (FEC) encoded, and where the FEC spans the plurality of encoded messages and decoding the plurality of encoded messages using FEC. The method also includes determining a plurality of decoding status messages in accordance with decoding the plurality of encoded messages and transmitting, by the first device to the second device, the plurality of decoding status messages less often than once every TTI.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: March 20, 2018
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Aaron Callard, Alex Stephenne, Mohammadhadi Baligh, Kelvin Kar Kin Au
  • Patent number: 9923408
    Abstract: This specification provides a method for deciding a communication protocol between a wireless power transmitter and a wireless power receiver. To this end, a method for deciding a communication protocol by the wireless power receiver for data transmission or reception with the wireless power transmitter includes transmitting first communication protocol information indicating communication protocols supportable by the wireless power receiver itself to the wireless power transmitter, and deciding a communication protocol for the data transmission or data reception based on second communication protocol information, which indicates communication protocols selected based on the first communication protocol information, when the second communication protocol information is received from the wireless power transmitter.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: March 20, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Hyunbeom Lee, Jaesung Lee, Yongcheol Park, Jeongkyo Seo
  • Patent number: 9883810
    Abstract: Described herein is an optical coherence tomograph (OCT) angiography technique based on the decorrelation of OCT signal amplitude to provide flow information. The full OCT spectrum can be split into several narrower spectral bands, resulting in the OCT resolution cell in each band being isotropic and less susceptible to axial motion nose. Inter-B-scan decorrelation can be determined using the individual spectral bands separately and then averaged. Recombining the decorrelation images from the spectral bands yields angiograms that use the full information in the entire OCT spectral range. Such images provide significant improvement of signal-to-noise ratio (SNR) for both flow detection and connectivity of microvascular networks compared to other techniques. Further, creation of isotropic resolution cells can be useful for quantifying flow having equal sensitivity to axial and transverse flow.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: February 6, 2018
    Assignee: Oregon Health & Science University
    Inventors: Yali Jia, David Huang, Jason Tokayer, Ou Tan
  • Patent number: 9887037
    Abstract: This specification provides a method for deciding a communication protocol between a wireless power transmitter and a wireless power receiver. To this end, a method for deciding a communication protocol by the wireless power receiver for data transmission or reception with the wireless power transmitter includes transmitting first communication protocol information indicating communication protocols supportable by the wireless power receiver itself to the wireless power transmitter, and deciding a communication protocol for the data transmission or data reception based on second communication protocol information, which indicates communication protocols selected based on the first communication protocol information, when the second communication protocol information is received from the wireless power transmitter.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: February 6, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Hyunbeom Lee, Jaesung Lee, Yong-Cheol Park, Jeongkyo Seo
  • Patent number: 9882614
    Abstract: Interference in preamble signals and pilot signals in cooperative transmission using interference suppressing technology is avoided. A wireless apparatus for transmitting a wireless signal on which directivity control has been performed to stations in a wireless system including at least one wireless apparatus is provided with a known signal generating unit which generates a known signal to be added to the wireless signal, a weighting processing unit which performs weighting on the known signal generated by the known signal generating unit, and a wireless processing unit which transmits the known signal on which the weighting has been performed by the weighting processing unit.
    Type: Grant
    Filed: February 4, 2013
    Date of Patent: January 30, 2018
    Assignee: Nippon Telegraph And Telephone Corporation
    Inventors: Tomoki Murakami, Yusuke Asai, Riichi Kudo, Koichi Ishihara, Masato Mizoguchi, Takeo Ichikawa
  • Patent number: 9853703
    Abstract: Channel state information (CSI) feedback in a wireless communication system is disclosed. User equipment transmits a CSI feedback signal via a Physical Uplink Control CHannel (PUCCH). If the UE is configured in a first feedback mode, the CSI comprises a first report jointly coding a Rank Indicator (RI) and a first precoding matrix indicator (PMI1), and a second report coding Channel Quality Indicator (CQI) and a second precoding matrix indicator (PMI2). If the UE is configured in a second feedback mode, the CSI comprises a first report coding RI, and a second report coding CQI, PMI1 and PMI2. The jointly coded RI and PMI1 employs codebook sub-sampling, and the jointly coding PMI1, PMI2 and CQI employs codebook sub-sampling.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: December 26, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Runhua Chen, Eko N. Onggosanusi, Ralf M. Bendlin
  • Patent number: 9847802
    Abstract: An example transmitter includes first and second circuit stages and interface circuits. The first circuit stage is configured to generate modulated signals each having a different carrier frequency from baseband signals. The second circuit stage is configured to generate radio frequency (RF) energy to be radiated by antenna(s). The interface circuits are coupled between the first circuit stage and the second circuit stage. The second circuit stage and the interface circuits are configurable to provide a first mode and a second mode. In the first mode, the second circuit stage provides transmit paths and the interface circuits couple each of the modulated signals to a respective one of the transmit paths. In the second mode, the second circuit stage provides a first transmit path and the interface circuits couple a sum of at least two of the modulated signals to the first transmit path.
    Type: Grant
    Filed: August 16, 2016
    Date of Patent: December 19, 2017
    Assignee: XILINX, INC.
    Inventors: Brendan Farley, John E. McGrath
  • Patent number: 9819430
    Abstract: A sequence of symbols is received on a first channel. A noise contribution of a given synchronization symbol is estimated; a reference noise contribution of at least one further symbol is estimated. Based on the noise contribution and further based on the reference noise contribution the given synchronization symbol is selectively considered when determining a coupling coefficient of crosstalk between the first channel and a second channel.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: November 14, 2017
    Assignee: Lantiq Beteiligungs-GmbH & Co. KG
    Inventors: Roland Zukunft, Pidder Kassel, Stefan Krause
  • Patent number: 9801160
    Abstract: The present invention relates to a method and to an apparatus for transmitting/receiving data in a relay communication system. The method comprises the steps of: setting, as a guard band, the first predetermined number of symbol transmission slots of a data transmission period in a subframe resource element of a downlink channel constituted by a control signal transmission period to which a control signal is allocated and the data transmission period to which downlink data is allocated; allocating reference signals to symbols of the data transmission period; puncturing the symbols corresponding to the guard band from among the symbols to which said reference signals are allocated; and transmitting signals to which said reference signals are allocated.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: October 24, 2017
    Assignee: LG Electronics Inc.
    Inventors: Han-Byul Seo, Byoung-Hoon Kim
  • Patent number: 9781700
    Abstract: A method of connecting devices to a network is provided. The method includes providing base stations connected to a network, and at each of the base stations, receiving probe signals from terminal devices. For each of the terminal devices, the base station calculates a signature waveform based on a time-reversed waveform of a channel response signal derived from the corresponding probe signal. For each of the terminal devices, the base station determines a downlink transmit signal for the terminal device based on the downlink data and the corresponding signature waveform, and transmits the downlink signals to the terminal devices. Several base stations have overlapping broadcast regions, several terminal devices are located within the overlapped broadcast regions, the base stations transmit the downlink signals using a same frequency band, and some downlink signals transmitted by base stations having overlapping broadcast regions also overlap in time.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: October 3, 2017
    Assignee: Origin Wireless, Inc.
    Inventors: Yan Chen, Hang Ma, Yi Han, Hung-Quoc Duc Lai, K. J. Ray Liu
  • Patent number: 9774416
    Abstract: A mobile communication terminal calculates an interference rejection combining reception weight matrix so as to reduce interference with a desired beam by another beam, in which the desired beam is a beam of radio waves transmitted from a desired base station. The mobile communication terminal estimates an interference and noise power expected when the IRC is implemented based on the interference rejection combining reception weight matrix and calculates a signal-to-interference-plus-noise ratio expected when the IRC is implemented based on the interference and noise power. The mobile communication terminal measures or calculates received signal qualities relative to radio waves received from a plurality of base stations, to compensate for the signal-to-interference-plus-noise ratio or the interference and noise power.
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: September 26, 2017
    Assignee: NTT DOCOMO, INC.
    Inventors: Yusuke Ohwatari, Yousuke Sano, Yukihiko Okumura
  • Patent number: 9768825
    Abstract: Wireless communication devices (UEs) may include multiple receive (RX) chains and associated antennas, and at least one transmit (TX) chain co-located with one of the RX chains. The UE may track instant fading of the antenna gain(s) during reception of packets from an associated access point (AP) device to which the UE intends to transmit packets. The UE may also track long term antenna gain(s), using any packets received at the multiple RX chains within the UE. At a switching occasion, a decision is made by the UE whether to switch antennas. If the instant fading detection is based on packets received no later than a specified time period prior to the switching occasion, then the UE may make the switching decision based on the results of the instant fading tracking. Otherwise, the UE may make the switching decision based on the results of the long term antenna gain tracking.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: September 19, 2017
    Assignee: Apple Inc.
    Inventors: Xiaowen Wang, Syed Aon Mujtaba, Vinay R. Majjigi, Joonsuk Kim
  • Patent number: 9763185
    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: Grant
    Filed: February 13, 2013
    Date of Patent: September 12, 2017
    Assignee: APPLE INC.
    Inventors: Syed Aon Mujtaba, Youngjae Kim, Kee-Bong Song, Xiaowen Wang, Yuchul Kim
  • Patent number: 9762343
    Abstract: Systems and methods are disclosed for detecting one or more predefined signals while suppressing interference. In some embodiments, a method of operation of a wireless device in a wireless network to detect a predetermined signal in the presence of interference comprises detecting one or more first cells and detecting one or more predetermined signals from a second cell while spatially filtering transmissions from one or more perceived directions of the one or more first cells, respectively. In this manner, detection of the one or more predefined signals from the second cell is improved. In some embodiments, the one or more first cells are strong relative to the weaker second cell.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: September 12, 2017
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Joakim Axmon, Peter Alriksson, Torgny Palenius
  • Patent number: 9755689
    Abstract: Wireless communication wherein channel estimation accuracy is improved while keeping the position of each bit in a frame, even when a modulation system having a large modulation multiple value is used for a data symbol. An encoding operation encodes and outputs transmitting data (bit string) and a bit converting operation converts at least one bit of a plurality of bits constituting a data symbol to be used for channel estimation, among the encoded bit strings, into ‘1’ or ‘0’. A modulating operation modulates the bit string inputted from the bit converting operation by using a single modulation mapper and a plurality of data symbols are generated.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: September 5, 2017
    Assignee: PANASONIC CORPORATION
    Inventors: Kenichi Miyoshi, Hidetoshi Suzuki, Katsuhiko Hiramatsu, Christian Wengerter, Alexander Golitschek Edler Von Elbwart
  • Patent number: 9750028
    Abstract: Aspects of the present disclosure are directed to improving maximum transmit power in multi-carrier reverse-link transmission. In one aspect, a method of carrier management for a multi-carrier reverse link transmission is disclosed. A method can include transmitting a reverse link signal on a plurality of carriers, and the reverse link signal including payload data and overhead data. A method can funnel payload data onto a first carrier of the plurality of carriers, while maintaining transmission of the overhead data on all the carriers of the plurality of carriers. Other aspects, embodiments, and features are also claimed and described.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: August 29, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Joseph B. Soriaga, Jun Hu, Ming Yan, Christopher Gerard Lott, Rashid Ahmed Akbar Attar
  • Patent number: 9749883
    Abstract: The application relates to a “wireless communication network including a station and an access point” which is in particular a Wi-Fi network according to the IEEE 802.11 standards. Internet service providers are searching for ways to get a better understanding of the end-user's wireless environment including link quality and performance. The proposed method calculates a performance value based on measured round trip times which are sent at different modulation rates. Based the change of performance in dependence of the modulation rate conclusions about the possible source of performance problems can be drawn, in particular it can be distinguished between (Bluetooth) interference and distance between station and access point being too large.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: August 29, 2017
    Assignee: Thomson Licensing
    Inventors: Karel Van Doorselaer, Koen Van Oost, Sylvain Dumet, Dirk Van De Poel
  • Patent number: 9749158
    Abstract: A wireless communication system includes a wireless transmit/receive unit (WTRU). The WTRU is configured to generate at least one local codebook based on a baseline codebook, and select a codeword from the local codebook that is associated with feedback.
    Type: Grant
    Filed: May 9, 2007
    Date of Patent: August 29, 2017
    Assignee: InterDigital Technology Corporation
    Inventors: Kyle Jung-Lin Pan, Robert Lind Olesen, Donald M. Grieco
  • Patent number: 9748992
    Abstract: Disclosed are systems and methods for reducing filter insertion loss while maintaining out-of-band attenuation. In some embodiments, a system can be configured for processing of radio-frequency (RF) signals. The system can include a plurality of signal paths configured to accommodate multiple frequency bands, with each of the multiple bands having a passband. The system can further include a filter circuit disposed along each of the signal paths. At least one of the filter circuits can be segmented into two or more segments that substantially cover the passband corresponding to the filter circuit. The segmented filter circuit can be configured to provide a desired attenuation of out-of-band interferers and a desired insertion loss level. In some embodiments, the signal paths can include receive (Rx) paths.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: August 29, 2017
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventor: David Richard Pehlke