Fourier Transform Patents (Class 370/210)
  • Patent number: 10383076
    Abstract: The present disclosure relates to a method used in a radio node, and an associated radio node. The radio node is served by a superior radio node and serves one or more subordinate radio nodes. The method includes: receiving a first synchronization signal from the superior radio node; obtaining a first downlink transmission time position for the first synchronization signal; determining a second downlink transmission time position for a second synchronization signal to be transmitted by the radio node, based on the first downlink transmission time position; and transmitting the second synchronization signal via the second downlink transmission time position to the one or more subordinate radio nodes.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: August 13, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Hai Wang, Qianxi Lu, Rui Fan, Jinhua Liu
  • Patent number: 10371732
    Abstract: A method is provided for performing real-time spectral analysis of a non-stationary signal. The method includes sampling the non-stationary signal, using an observation window having a length short enough to approximate a stationary signal, to provide an initial set of sampled data, buffering the initial set of sampled data to obtain multiple buffered sets of sampled data, filtering the initial set of sampled data and the buffered sets of sampled data, using corresponding filter responses, to obtain multiple filtered sets of sampled data, and performing a chirp-z-transform (CZT) of the filtered sets of sampled data to provide a set of discrete Fourier transforms (DFT) coefficients. A total signal spectrum of the non-stationary signal is reconstructed using the set of DFT coefficients.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: August 6, 2019
    Assignee: Keysight Technologies, Inc.
    Inventor: Adnan Al-Adnani
  • Patent number: 10361887
    Abstract: The subject system aggregates, or stitches, multiple component channel estimates to generate an aggregated wideband channel estimate that can be used to determine more accurate time of arrival estimations than those determinable from the individual component channel estimates. The subject system also provides for multipath detection on a single channel or an aggregated channel that may be used to facilitate an accurate time of arrival estimation. For example, information derived from the multipath detection may be used to supplement and/or enhance a time of arrival estimation algorithm. The subject system also provides a sounding protocol that allows devices to perform one or more signal exchanges to facilitate generating the aggregated wideband channel estimate and/or to facilitate performing the multipath detection. The protocol allows the devices to perform signal exchanges over one or more channels within a coherence time, and also provides for security mechanisms as well as failure recovery.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: July 23, 2019
    Assignee: APPLE INC.
    Inventors: Jahshan A. Bhatti, Brent M. Ledvina, Robert W. Brumley, Wei Zhang, Chiu Ngok E. Wong
  • Patent number: 10361821
    Abstract: In one aspect, a wireless device receives a first data transmission from a base station during a predetermined subframe interval and within a duration that is less than a maximum data transmission duration that is possible within the predetermined subframe interval, and determines a transmission time for transmitting HARQ feedback to the base station such that the determined transmission time depends on which subset of symbols within the predetermined subframe interval was used for the first data transmission. The wireless device transmits HARQ feedback for the first data transmission at the determined transmission time. In another aspect, a base station transmits the first data transmission and determines a reception time for receiving HARQ feedback such that the determined transmission time depends on which subset of symbols within the predetermined subframe interval was used. The base station receives HARQ feedback for the first data transmission at the determined transmission time.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: July 23, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: David Astely, Mattias Andersson, Niklas Andgart, Johan Bergman, Helka-Liina Määttanen, Stefan Parkvall
  • Patent number: 10346782
    Abstract: Techniques are described for adaptive and augmented decision making by an artificial intelligence (AI) engine, such as an engine that employs machine learning techniques. A decision-making process may be executed to make a decision regarding operations of the organization, and the AI engine may be employed to analyze the various aspects of a decision and determine a risk level associated with the decision. The risk level may be a combination of the probability of a negative outcome and a magnitude of loss that may occur due to a negative outcome. The automated process may also determine a confidence level that indicates a degree of confidence in the determined risk level. Risk and confidence may be independent values. Implementations may enable risk mitigation by providing a risk estimate with higher confidence than traditional methods.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: July 9, 2019
    Assignee: Accenture Global Solutions Limited
    Inventor: Steven C. Tiell
  • Patent number: 10341066
    Abstract: A system and method for transmitting an orthogonal frequency-division multiplexed signal with a group distributed phase tracking reference signal subcarrier structure, and for estimating, and compensating for, both common phase error, and inter-carrier interference.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: July 2, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hamed Maleki, Pranav Dayal, Kee-Bong Song
  • Patent number: 10334449
    Abstract: The techniques described herein enable a commercial cellular service provider to use a repurposed portion of spectrum to provide cellular service to a customer base while ensuring that the use of the repurposed portion of spectrum does not interfere with a previous use of the repurposed portion of spectrum by an incumbent entity. The techniques determine, and manage the use of, forbidden cells and clean cells. A “forbidden” cell is a cell in which a previous use of spectrum by an incumbent entity is protected. A “clean” cell is a cell that can be freely used by the commercial cellular service provider without a possibility of interference with a protected use of the spectrum by the incumbent entity.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: June 25, 2019
    Assignee: T-Mobile USA, Inc.
    Inventors: Neng-Tsann Ueng, Karri Mikael Kuoppamaki
  • Patent number: 10333639
    Abstract: A digital synthesis channelizer includes a memory buffer and circuitry. The memory buffer stores samples of N input signals having a sampling rate Fsi. The N input signals are processed, prior to storing in the memory buffer, by an N-point time-frequency transform module. The circuitry includes at least P filters derived from a Low-Pass Filter whose stopband frequency depends on Fsi. The circuitry is configured to set a sampling time according to a predefined output sampling rate Fso=?·Fsi, ? being a predefined rate-conversion ratio, to select based on the sampling time one or more filters out of the at least P filters, and using the selected one or more filters, to generate, from at least some of the samples in the memory buffer, a filtered and interpolated output sample of an output signal that sums N digitally resampled by ? and frequency-shifted versions of the respective N input signals.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: June 25, 2019
    Assignee: CAPACICOM LTD.
    Inventors: Avihay Sadeh-Shirazi, Ronen Mayrench, Nitzan Ron, Ariel Yagil, Naor Goldman, Daniel Wajcer
  • Patent number: 10327220
    Abstract: A cooperative wireless system using a multicast protocol to facilitate coordinating coherent addition and subtraction of wireless signaling or other beams originating from a plurality of antenna units at a target location is contemplated. The system may utilize multicast-based regulation and distribution of transmission control parameters necessary for the antenna units to synchronize the wireless signaling in a manner sufficient to enable the coherent addition and subtraction thereof at the target location.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: June 18, 2019
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Luis Alberto Campos, Alireza Babaei
  • Patent number: 10321426
    Abstract: An apparatus and method for detecting synchronization and signals using block data processing in a receiving system are provided. To process an input signal, a cumulative matrix is obtained from an input vector signal for each frame generated from the signal. A primary eigenvector is extracted from the cumulative matrix, and the maximum value of a correlation vector is calculated from the extracted primary eigenvector. A time delay is detected by comparing the calculated maximum value of the correlation vector with a first threshold value, and a delay correlation vector is calculated from the detected time delay. Finally, synchronization and signals are detected by comparing the calculated delay correlation vector with a second threshold value.
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: June 11, 2019
    Assignees: Samsung Electronics Co., Ltd., Electronics and Telecommunications Research Institute
    Inventors: Chang Wahn Yu, Youn Ok Park, Chong Hyun Lee, Jun-Woo Kim, Seungjae Bahng, Byung-Han Ryu, Jung Pil Choi, Young Jo Bang
  • Patent number: 10320456
    Abstract: A method for generating a codebook includes applying a unitary rotation to a baseline multidimensional constellation to produce a multidimensional mother constellation, wherein the unitary rotation is selected to optimize a distance function of the multidimensional mother constellation, and applying a set of operations to the multidimensional mother constellation to produce a set of constellation points. The method also includes storing the set of constellation points as the codebook of the plurality of codebooks.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: June 11, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Mahmoud Taherzadeh Boroujeni, Hosein Nikopour, Alireza Bayesteh, Mohammadhadi Baligh
  • Patent number: 10313995
    Abstract: The present disclosure relates to a pre-5th-generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4G) communication system such as a long term evolution (LTE). An operating method of a base station (BS) in a communication system supporting a time division multiplexing (TDD) scheme is provided. The operating method includes transmitting, to a user equipment (UE) which uses a second radio access technology (RAT) different from a first RAT used by other BS different from the BS, information related to downlink (DL) and uplink (UL) timing of the other BS and margin information for synchronizing DL and UL timing of the first RAT with DL and UL timing of the second RAT, wherein the information related to the DL and UL timing of the other BS is received from the other BS, or predicted by the BS.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: June 4, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yeo-Hun Yun, Min Sagong, Tae-Young Kim, Ji-Yun Seol
  • Patent number: 10306407
    Abstract: Apparatus, systems and articles of manufacture to provide improved, automatic, and dynamic frequency selection for and/or by medical body area network apparatus are disclosed. Certain examples provide a medical body area network apparatus. The example apparatus includes a radio to receive a beacon signal and a processor to process the beacon signal to determine a location of the apparatus. The example processor is configured to at least: when the beacon signal indicates a first location, communicate via a first frequency band; and when the beacon signal indicates a second location, communicate via a second frequency band.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: May 28, 2019
    Assignee: General Electric Company
    Inventors: Stanislava Soro, Steven William Wik, S. M. Shajedul Hasan, Danijel Maricic, David M. Davenport
  • Patent number: 10284403
    Abstract: A method performed by a communication node for transmission of a signal according to a single- or multiple carrier modulation scheme in a wireless communications network. The communication node modulates at least a first part of the signal into at least a first symbol with a shorter duration than a complete symbol according to the modulation scheme. The communication node modulates at least a second part of the signal into at least a second symbol with a shorter duration than a complete symbol according to the modulation scheme. The duration of the at least first and second symbols are equal to the duration of a complete symbol according to the carrier modulation scheme. Then, the communication node transmits the at least first and second symbol as a complete symbol according to the modulation scheme without time domain separation.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: May 7, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Johan Axnäs, Kumar Balachandran, Dennis Hui
  • Patent number: 10277325
    Abstract: According to various embodiments, a method for demarcating data bursts includes receiving, via a coax network, a first data burst and a second data burst at a network interface device, wherein the first data burst and the second data burst at least partially overlap in the time domain. In various embodiments, the first data burst includes a start marker, first data elements following the start marker, and an end marker following the first data elements. In various embodiments, the start marker is orthogonal to the end marker. The method further includes distinguishing, at the network interface device, the first data burst from the second data burst based on the start marker and the end marker; and transmitting the first data burst and the second data burst via an optical network such that the first data burst and the second data burst do not overlap in time.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: April 30, 2019
    Assignee: Marvell International Ltd.
    Inventors: Jin Zhang, Kok-Wui Cheong
  • Patent number: 10271192
    Abstract: A wireless communication device (WCD) establishes an ad-hoc communication link with a second WCD within operating range. A replica of at least a portion of a display of the first WCD may be shared with the second WCD utilizing wireless broadband signals that are communicated via the established one or more ad-hoc communication links. The first WCD and the second WCD are operable to communicate the wireless broadband signals at a power level that is below a spurious emissions mask. The transmitted wireless broadband signals are spread so they occupy a designated frequency spectrum band. The shared replica of at least a portion of the display of the first WCD includes one or more applications, text, video and/or data content. A user of the first WCD may interact with content that is displayed on a display of the second WCD and vice-versa.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: April 23, 2019
    Assignee: Maxlinear, Inc.
    Inventors: Curtis Ling, Timothy Gallagher
  • Patent number: 10270479
    Abstract: A signal processing device capable of performing a process of reducing peak power without interfering with a transmission signal at a high speed is provided. A signal processing device includes a peak-reduced signal generating device and a band pass filter. The peak-reduced signal generating device divides an input signal having an information component into signal streams for every predetermined number of signals, and generates peak-reduced signal with peak canceling signals on the basis of the signal streams. The peak-reduced signal generating device combines the signal streams which the peak-reduced signals on the basis of an order in which the division into the signal streams has been performed. The band pass filter passes a frequency component corresponding to the information component and rejects a frequency component corresponding to the peak canceling signal with respect to a signal based on a signal from the peak-reduced signal generating device.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: April 23, 2019
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Makoto Tanahashi, Yoshimasa Egashira, Keiichi Yamaguchi
  • Patent number: 10251176
    Abstract: A radio communication apparatus to perform communication with another radio communication apparatus by using a plurality of frequency bands, the radio communication apparatus includes: a receiver configured to receive, when performing a random access procedure to the another radio communication apparatus, a control message by using a first frequency band as a message transmitted by the radio communication apparatus at a last of the random access procedure, the control message instructing communication using a second frequency band different from the first frequency band; and a controller configured to control communication according to reception of the control message, to perform data communication with the another radio communication apparatus by using the second frequency band.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: April 2, 2019
    Assignee: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, Yoshihiro Kawasaki, Tetsuya Yano, Yoshinori Tanaka
  • Patent number: 10237727
    Abstract: Content of wireless equipment (WE) is managed over-the-air (OTA). Content is germane to feature(s) of the WE and is related to operation thereof. Management of the content is automatically implemented in response to attachment of the WE to a confined-coverage access point (AP). The WE and a network server enable, in part, such management. The confined-coverage AP enables exchange of signaling and data associated with management of the content amongst the WE and the network server. Content includes software (SW); management OTA of SW can include update of an in-use version of a SW application or related SW component(s). SW update signaling can comprise message(s) conveying a WE identifier and in-use version(s) of SW; request(s) for an update instruction; request(s) for at least one file associated with the SW; or message(s) indicative of availability of version(s) of SW newer than the in-use version(s).
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: March 19, 2019
    Assignees: AT&T INTELLECTUAL PROPERTY I, L.P., AT&T MOBILITY II LLC
    Inventors: Arthur Richard Brisebois, Juan Derrick Smith
  • Patent number: 10237032
    Abstract: In mixed numerology case, the performance of a physical downlink shared channel (PDSCH) can be improved by multiplexing PDSCH of one numerology with the channel state information reference signals (CSI-RS) of the other numerology and use of an advanced receiver. However, due to the interference from the PDSCH of the other numerology, the channel estimation for the underlying UE can be impacted if the CSI-RS is corrupted. An adaptive CSI-RS configuration can be deployed where the CSI-RS density is adapted based on the PDSCH transmission of the other numerology. Namely, based on the scheduling decision of the other numerology, the CSI-RS density can be changed. Thus, the impact on channel estimation can be minimized when the data channel of one numerology is multiplexed with the CSI-RS of the other numerology.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: March 19, 2019
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: SaiRamesh Nammi, Xiaoyi Wang, Arunabha Ghosh
  • Patent number: 10230443
    Abstract: Embodiments of the present invention provide a method for feeding back channel state information, a user equipment, and abase station, to improve feedback precision of channel state information. The method includes: receiving a reference signal sent by a base station; selecting a precoding matrix W from a codebook according to the reference signal, where a column vector of the precoding matrix W may be expressed as ?[V ej?v]T, v=[1 ej?]; and sending a precoding matrix indicator PMI to the base station, where the PMI is corresponding to the selected precoding matrix W. The present invention may further improve quantization precision and achieve balance between overheads and the quantization precision. The base station performs precoding on a sent signal according to a fed back precoding matrix indicator, which can improve precoding precision, thereby improving a data transmission rate and system throughput.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: March 12, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Jianguo Wang, Yongxing Zhou, Leiming Zhang
  • Patent number: 10230821
    Abstract: A system and method of classifying a set of internet protocol network data traffic as likely or unlikely to contain constant-packet-rate data or VoIP traffic using frequency spectrum analysis of data packet arrival times. The method is performed with an apparatus connected in-line on the network link from which the set of network data traffic is obtained. The network data traffic is presorted by packet size, source IP address, destination IP address, source port number, destination port number, or transport-layer protocol to limit the required analysis. A sliding window function is used to provide the time-domain input data to the frequency spectrum analysis. A threshold function is used to detect peaks in the calculated frequency spectrum that indicate constant-packet-rate traffic. An automated system preferably captures the network data traffic from one or more network links, immediately performs the frequency spectrum analysis on the data traffic and stores the results in memory for later access.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: March 12, 2019
    Assignee: Research Electronics International, LLC
    Inventors: Bruce R. Barsumian, Thomas H. Jones, Ross Alan Binkley
  • Patent number: 10223139
    Abstract: CRYSTAL “Cognitive radio you share, trust and access locally” (CRYSTAL) is a virtualized cognitive access point that may provide for combining multiple wireless access applications on a single hardware platform. Radio technologies such as LTE, WiMax, GSM, and the like can be supported. CRYSTAL platforms can be aggregated and managed as a cloud, which provides a model for access point sharing, control, and management. CRYSTAL may be used for scenarios such as neighborhood spectrum management. CRYSTAL security features allow for home/residential as well as private infrastructure implementations.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: March 5, 2019
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: Jonathan M. Smith, Eric R. Keller, Thomas W. Rondeau, Kyle B. Super
  • Patent number: 10219106
    Abstract: The present disclosure relates to methods and systems for generation of a beacon identifier (ID) for increased security of a system for a location based service. The system includes a beacon device, such as a BLE device, a mobile device, and a server. The beacon device is configured to generate a beacon ID based on a beacon device identifier, such as a unique device identifier, of a beacon device and a time value. In some implementations, generation of the beacon ID includes a pseudorandom function and a shared key that is established between the beacon device and the server.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: February 26, 2019
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Andy Lam, Fred Wong, Aldar Chan
  • Patent number: 10219274
    Abstract: Systems and techniques relating to wireless communications are described. A described technique includes sensing a group of channels for a channel contention operation that acquires two or more channels of the group of channels and detects a busy channel of the group of channels; determining a channel bonding indicator based on the channel contention operation; generating a preamble portion of a frame that includes the channel bonding indicator; generating a data portion of the frame, and transmitting the frame to one or more devices. Generating the preamble portion can include duplicating a legacy preamble on each of the acquired channels within the preamble portion. Generating the data portion can include setting first subcarriers that correspond to the acquired channels to data values, and setting second subcarriers that correspond to the busy channel to null values for at least a portion of the data portion of the frame.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: February 26, 2019
    Assignee: MARVELL WORLD TRADE LTD.
    Inventors: Lei Wang, Hongyuan Zhang, Yakun Sun, Liwen Chu, Jinjing Jiang, Yan Zhang, Hui-Ling Lou
  • Patent number: 10217346
    Abstract: In a disclosed method, a computing device receiver, from a wireless receiver (RX), first data indicative of channel properties of a first communication link between the wireless receiver (RX) in a first device and a wireless transmitter (TX) in a second device. The first device and the second device are located in a building. The computing device further executes a neural network to process the first data to distinguish humans from stationary objects within the building and detect presence of the human in the building. The computing device transmits result data indicative of the presence to at least one of the first device or the second device.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: February 26, 2019
    Assignee: Amazon Technologies, Inc.
    Inventors: Ce Zhang, Ming Zheng, Peruvemba Ranganathan Sai Ananthanarayanan, Anuj Dron, Celalettin Umit Bas
  • Patent number: 10211856
    Abstract: Disclosed is a hardware scalable channelizer (“HSC”). The HSC includes an integrated circuit (“IC”) that utilizes neuromorphic processing. The IC also includes an IC input configured to receive an input signal and a plurality of infinite impulse response (“IIR”) channelizer filters in signal communication with the IC input, where each IIR channelizer filter of the plurality of IIR channelizer filters is configured to select a frequency band from the input signal and provide synchronous filtering of the input signal.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: February 19, 2019
    Assignee: The Boeing Company
    Inventors: Peter Petre, Daniel S. Matic, Gabriel L. Virbila
  • Patent number: 10206167
    Abstract: An embodiment of the present invention is directed to a method for partitioning an energy or power source. The energy source may be, for example, a battery or batteries or other power supply or power supplies for an electronic device, such as a cell phone, or mobile device. The energy source (battery for example), or power supply, provides power to a cell phone, or mobile device or any other load or power consuming device. Partitioning this energy source is a technique for controlling its operation so that power is provided to the power consuming device, such as a cell phone more efficiently, thereby extending the length of time the phone can be used between re-charging.
    Type: Grant
    Filed: January 8, 2017
    Date of Patent: February 12, 2019
    Assignee: ParkerVision, Inc.
    Inventor: Gregory S. Rawlins
  • Patent number: 10200872
    Abstract: Methods, systems, and devices are described for direct current (DC) subcarrier handling for narrowband user equipment (UE). A UE may identify a narrow bandwidth region allocated for operation within a wide bandwidth carrier, determine that the narrow bandwidth region is centered about a different frequency than a center subcarrier of the wide bandwidth carrier, and, accordingly, select an operating mode. Various operating modes may include down-converting a carrier frequency of the allocated narrow bandwidth region. A base station may support narrowband UE operation by determining that the narrow bandwidth region is centered about a different frequency than a center subcarrier of the wide bandwidth carrier and rate matching subcarriers of the narrow bandwidth region around tones of a center frequency of the narrow bandwidth region.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: February 5, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Iyab Issam Sakhnini, Hao Xu, Peter Gaal
  • Patent number: 10171207
    Abstract: Methods and apparatus for control bit detection. In an exemplary embodiment, a method includes receiving an LLR sequence (l) that includes P control bits and calculating a sum of LLR squares parameter (L) associated with the LLR sequence. The method also includes generating a value (Vp) for each of the 2P combination of the control bits. Each Vp value is based on a parameter sequence and the LLR sequence. The method also includes determining a smallest value of Vp, and outputting a determination that a control bit combination was received if the smallest value of Vp is less than a threshold value (THD) multiplied by the parameter L.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: January 1, 2019
    Assignee: Cavium, LLC
    Inventor: Tianmin Ren
  • Patent number: 10164659
    Abstract: Concepts and schemes pertaining to quasi-cyclic-low-density parity-check (QC-LDPC) coding are described. A processor of an apparatus may generate a QC-LDPC code having a plurality of codebooks embedded therein. The processor may select a codebook from the plurality of codebooks. The processor may also encode data using the selected codebook. Alternatively or additionally, the processor may generate the QC-LDPC code including at least one quasi-row orthogonal layer. Alternatively or additionally, the processor may generate the QC-LDPC code including a base matrix a portion of which forming a kernel matrix that corresponds to a code rate of at least a threshold value.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: December 25, 2018
    Assignee: MEDIATEK INC.
    Inventors: Mao-Ching Chiu, Chong-You Lee, Cheng-Yi Hsu, Timothy Perrin Fisher-Jeffes, Yen-Shuo Chang, Wei-Jen Chen, Ju-Ya Chen
  • Patent number: 10164729
    Abstract: A system including a direct current tone, guard tone, data tone allocation, mapping, and inverse Fourier transform (IFT) modules. The direct current tone module determines a number of direct current tones based on whether a network device is operating in a single user or multi-user mode. The guard tone module determines a number of guard tones based on whether the network device is operating in the single user or multi-user mode. The data tone allocation module determines a number of data tones based on the number of direct current and guard tones. The mapping module receives data and based on the number of data tones, maps the data to the data tones. The IFT module performs a frequency to time domain conversion of an output of the mapping module to generate orthogonal frequency division multiplexing (OFDM) symbols during the single user mode and OFDM access symbols during the multi-user mode.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: December 25, 2018
    Assignee: Marvell World Trade Ltd.
    Inventors: Hongyuan Zhang, Mingguang Xu, Yakun Sun
  • Patent number: 10153812
    Abstract: A method for wireless communication is described herein. The method may include advertising support by a wireless device for a first bandwidth mode and a second bandwidth mode, wherein the first bandwidth mode utilizes a single channel and the second bandwidth mode utilizes channel bonding between a plurality of channels. The method may also include switching a current bandwidth mode of the wireless device from one of the bandwidth modes to the other of the bandwidth modes and adjusting a number of multiple-input, multiple-output (MIMO) spatial streams supported by the wireless device in response to the switching.
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: December 11, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Albert van Zelst, Didier Johannes Richard van Nee, Vincent Knowles Jones, IV, Simon Jan Brand, Patrick Daniel Kelliher, MeeLan Lee, Todd Daniel Antes, Maarten Menzo Wentink
  • Patent number: 10148360
    Abstract: A method for transmitting a plurality of input streams from a transmitter to a receiver processes each of a plurality of input data streams to generate a plurality of parallel pairs of data streams including an in-phase stream (I) and a quadrature-phase stream (Q) for each of the plurality of input data streams. Each of the plurality of parallel pairs of data streams are modulated with a selected one of at least three prolate spheroidal wave functions, respectively, to generate a plurality of data signals, each of the plurality of data signals associated with one of the plurality of parallel pairs of data streams. A plurality of composite data streams are generated by overlaying at least one data signal of the plurality of data signals in a first data layer with the at least one data signal of the plurality of data signals in a second data layer.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: December 4, 2018
    Assignee: NXGEN PARTNERS IP, LLC
    Inventor: Solyman Ashrafi
  • Patent number: 10142818
    Abstract: Apparatus and methods to reuse wireless circuitry to communicate with multiple wireless networks to support multiple subscriber identities in a wireless communication device are disclosed. A representative method includes receiving signaling messages for a second subscriber identity from a second wireless network while connected to a first wireless network for a first subscriber identity. A portion of radio frequency wireless circuitry is reconfigured to communicate with the second wireless network to establish a signaling channel and respond to signaling messages received from the second wireless network. The portion of radio frequency wireless circuitry is reconfigured between the first and second wireless networks to maintain a connection with the first wireless network while also receiving from the second wireless network limited information that can be provided to a user.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: November 27, 2018
    Assignee: Apple Inc.
    Inventors: Qiang Miao, Jianxiong Shi, Li Su, Wenping Lou
  • Patent number: 10122560
    Abstract: An OFDM transmitter comprising an input for acquiring or receiving a signal to be transmitted, an output for transmitting a PAPR reduced version of the signal, a processor and memory storing code for execution by the processor. The processor, when executing the code, is configure to determine a plurality of possible values of tone reservation, hereinafter referred to as TR, tones for use in TR based PAPR reduction and to perform a tree search over some or all of the possible values under a first constraint that the average power per TR tone does not exceed the average power per tone used for data transmission and a second constraint that selected values for the TR tones reduce PAPR.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: November 6, 2018
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Filippo Tosato, Magnus Stig Torsten Sandell
  • Patent number: 10117200
    Abstract: Disclosed is a method for acquiring a synchronization by a device to device (D2D) terminal in a wireless communication system, according to an embodiment of the present invention, the method comprising the steps of: measuring D2D synchronization signal reception power and/or D2D synchronization signal reception quality from a D2D synchronization signal; selecting a D2D synchronization signal to be used for synchronization acquisition on the basis of the measurement result; and acquiring a synchronization from the selected D2D synchronization signal, wherein the D2D synchronization signal reception quality is a value obtained by dividing the D2D synchronization signal reception power by the differential between total reception power and the D2D synchronization signal reception power.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: October 30, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Hyukjin Chae, Inkwon Seo, Hanbyul Seo, Jihyun Lee
  • Patent number: 10111253
    Abstract: Provided is a communication method in a wireless communication system using an interference alignment. The method includes: receiving, by a first AP, a data stream by using N1 (natural number) first reception antennas, and receiving, by a second AP, the data stream by using N2 (natural number) second reception antennas, in a wireless communication system including the first AP and the second AP which receive the data stream through a transmission beam which one or more user terminals having m (natural number) transmission antennas within a given number transmit; and updating to selectively add a part of user terminals which are newly connected to the first AP and the second AP to a set of connected user terminal, and transmitting, by each terminal of the set of connected user terminal, linearly independent transmission beams by applying an interference alignment with respect to a plurality of the first and the second reception antennas for the updated set of connected user terminal.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: October 23, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jin Hyung Oh, Sang Woon Jeon, Myung Sun Song
  • Patent number: 10103844
    Abstract: An information receiving and sending method and apparatus are provided, where the information receiving method includes: receiving, by a station (STA) in a transmit opportunity (TXOP) phase, orthogonal frequency division multiple access (OFDMA) data that is from a wireless access point (AP), where some data frames in the OFDMA data carry a legacy physical-layer preamble; and in a process of receiving the OFDMA data, working, by the STA, in an OFDMA receiving mode when receiving a data frame that does not carry the legacy physical-layer preamble, determining, by the STA according to a preset rule, a data frame that carries the legacy physical-layer preamble, and switching from the OFDMA receiving mode to an orthogonal frequency division multiplexing (OFDM) receiving mode to receive the data frame that carries the legacy physical-layer preamble.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: October 16, 2018
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Xun Yang
  • Patent number: 10097393
    Abstract: A system including a modulator, a repetition module, and a phase rotation module. The modulator is configured to (i) modulate data using dual sub-carrier modulation, and (ii) generate modulated symbols for transmission on a plurality of subcarriers. The repetition module is configured to repeat the modulated symbols from a first half of the plurality of subcarriers to a second half of the plurality of subcarriers. The phase rotation module is configured to rotate phase of the modulated symbols on selected subcarriers of the second half of the plurality of subcarriers.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: October 9, 2018
    Assignee: MARVELL INTERNATIONAL LTD.
    Inventors: Jie Huang, Hongyuan Zhang, Yakun Sun, Rui Cao
  • Patent number: 10057089
    Abstract: Embodiments of the present invention provide a data processing method and apparatus. The method includes: selecting at least two groups of data from a to-be-processed data stream according to a preset first interval in a staggered manner; performing Fourier transform on each of the at least two groups of data to obtain at least two groups of first data; performing frequency domain filtering on the at least two groups of first data by using a prototype filter, to obtain at least two groups of second data; performing inverse Fourier transform on each of the at least two groups of second data to obtain at least two groups of third data; and adding the at least two groups of third data according to a preset second interval in a staggered manner. In the process, data obtained after transform reserves a feature of a single carrier, and has a low peak-to-average ratio.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: August 21, 2018
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Daiming Qu, Fang Wang, Tao Jiang, Lei Chen
  • Patent number: 10057899
    Abstract: A frame transmission method is provided by a device in a wireless communication network. The device generates a signal field including a symbol using a 64 FFT and carrying signaling information, and generates a data field including a symbol using a FFT having a larger size than the 64 FFT and carrying data. The device transmits a frame including the signal field and the data field.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: August 21, 2018
    Assignee: NEWRACOM, INC.
    Inventors: Ilgu Lee, Changwahn Yu
  • Patent number: 10045263
    Abstract: A network switching method and a terminal device, which relate to the field of communications technologies, includes acquiring a network resource parameter of a network allowed to be accessed, and determining, from the network allowed to be accessed and according to the network resource parameter of the network allowed to be accessed, a target network to be switched to and a network resource parameter of the target network, where the network resource parameter of the target network is used to determine and set a running parameter of an application program that is to be run in the target network, and switching from a current network to the target network, and running the application program in the target network. The solutions can be used to enable the application program to implement, to some extent, seamless network switching.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: August 7, 2018
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Hao Wu, Kangmin Huang, Mingjie Dong
  • Patent number: 10039020
    Abstract: A single complex calculation for locating a dominant frequency, such as an interfering signal in a frequency range, is replaced by several much easier ones. A signal is analyzed over a first frequency range to locate at least one comparatively significant frequency component therein. This can involve analyzing, using electronic hardware, a test range of frequencies to identify a potentially significant component within the test range; and determining, using electronic hardware, if a condition for finishing the analysis has been met. If the condition has not been met, the test range is modified as a result of the analysis and the operations of analyzing and determining are repeated.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: July 31, 2018
    Assignee: Analog Devices Global
    Inventor: Patrick Joseph Pratt
  • Patent number: 10007836
    Abstract: A bird detection device equipped with: a captured image acquisition unit that acquires a captured image; a bird candidate image extraction unit that extracts a bird candidate image, which is a candidate bird image, from the captured image; and a bird detection determination unit that, on the basis of the time required for the bird candidate image to move in accordance with the size of the bird candidate image in the captured image, determines whether a bird has been detected. The bird detection determination unit also can determine whether a bird has been detected on the basis of the degree of change in the shape of the bird candidate image for a prescribed time interval.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: June 26, 2018
    Assignee: NEC CORPORATION
    Inventors: Yuji Okamoto, Hiroyuki Kumeno
  • Patent number: 10003546
    Abstract: Allowing a subscriber to modify a data transfer rate or available bandwidth associated with an Internet subscription tier for a selected or predetermined time period is provided. Upon receiving an indication of a selection to decrease an allowed amount of bandwidth or to boost or increase a data transfer rate to a next available service tier, a request may be sent to a gateway device associated with the subscriber to override firmware on the gateway device to restrict access to an amount of bandwidth or to allow access to additional bandwidth respectively.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: June 19, 2018
    Assignee: Cox Communications, Inc.
    Inventors: Daniel Clasen, Lior Koren, Franco Morales, Carson Banov, Shubh Singhi, Joshua Edward Fierstein, Douglas David Gravino
  • Patent number: 9979583
    Abstract: Methods and a system are described for generating a waveform for transmitting data over a channel divided into a plurality of adjacent frequency subcarriers. One method includes receiving a plurality of data bits, each destined for a different receiver of a plurality of receivers. For each received data bit, the method further includes coding the data bit using a unique spreading code of a first set of spreading codes to generate a corresponding group of multiple copies of a data symbol. Additionally, the groups of data symbols, corresponding to the plurality of data bits, are interleaved to generate a sequence of interleaved data symbols, and the sequence of interleaved data symbols is mapped to the plurality of adjacent frequency subcarriers to generate a waveform symbol.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: May 22, 2018
    Assignee: NXP USA, Inc.
    Inventors: Sharad Kumar, Amin Abdel Khalek, Yun Bai, Balaji Tamirisa
  • Patent number: 9960945
    Abstract: Provided is a method of processing a Wideband Code Division Multiple Access (WCDMA) signal timing offset for a signal analyzer. The method includes estimating an integer multiple timing offset of WCDMA baseband sample data corresponding to an amount of at least one frame; generating a frequency domain signal which is time delayed corresponding to a fractional timing offset estimation resolution after generating the frequency domain signal by performing a Fast Fourier Transform (FFT) calculation on an already-known reference signal; converting each time-delayed frequency domain signal into a time domain signal by performing an Inverse Fast Fourier Transform (IFFT) calculation on each time-delayed frequency domain signal and calculating a correlation between an input signal from a position of the integer multiple timing offset and the time domain signal; and estimating a delay time leading to a maximum correlation as a fractional timing offset.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: May 1, 2018
    Assignee: INNOWIRELESS CO., LTD.
    Inventors: Jin Soup Joung, Joo Hyeong Lee, Yong Hoon Lim, Kyoung Hwan Ju
  • Patent number: 9942081
    Abstract: Embodiments are provided for guard band utilization for synchronous and asynchronous communications in wireless networks. A user equipment (UE) or a network component transmits symbols on data bands assigned for primary communications. The data bands are separated by a guard band having smaller bandwidth than the data bands. The UE or network component further modulates symbols for secondary communications with a spectrally contained wave form, which has a smaller bandwidth than the guard band. The spectrally contained wave form is achieved with orthogonal frequency-division multiplexing (OFDM) modulation or with joint OFDM and Offset Quadrature Amplitude Modulation (OQAM) modulation. The modulated symbols for the secondary communications are transmitted within the guard band.
    Type: Grant
    Filed: May 4, 2016
    Date of Patent: April 10, 2018
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Usa Vilaipornsawai, Javad Abdoli, Jianglei Ma, Ming Jia
  • Patent number: 9936434
    Abstract: A method for providing communication in a communication device is disclosed. The method may include receiving a control instruction for a call session via the communication device, and assessing a quality of service of at least one of a default Wi-Fi network and a radio network. The method may also include selectively recommending to a user of the communication device the radio network for the call session based on the quality of service, and initiating the call session using the default Wi-Fi network or the radio network based on a selection made by the user.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: April 3, 2018
    Assignee: RingCentral, Inc.
    Inventors: Patrice Khawam, Xiaoqiang Sun, Tetsumasa Yoshikawa