End-to-end Transmission System Patents (Class 375/141)
  • Patent number: 10396846
    Abstract: Time-offset, time-overlapping signals are received. The signals each include a pilot code, and at least some of the signals each include a user code occupying a time slot time-synchronized to a respective pilot code. Time-offset cross-correlation peaks for respective ones of the pilot codes are generated, each cross-correlation peak indicating a respective one of the time slots. For each time slot a respective projection vector including user code projections each indicative of whether a respective user code of known user codes is present in the time slot is generated. Particular ones of the projection vectors are selectively combined into an aggregate projection vector of aggregate user code projections, such that the aggregate projection vector has a signal-to-noise ratio (SNR) greater than the projection vectors individually. The user code is selected from among the known user codes based on the aggregate user code projections of the aggregate projection vector.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: August 27, 2019
    Assignee: Cisco Technology, Inc.
    Inventors: Ragnvald Balch Barth, Knut Inge Hvidsten, Michael A. Ramalho
  • Patent number: 10368280
    Abstract: Provided is a method for controlling a handover from a first base station to a second base station by a user equipment that performs radio communication over a communication channel formed by aggregating a plurality of component carriers, wherein scheduling information on each component carrier is transmitted to the user equipment according to either of a straight scheduling method and a cross scheduling method, and the method includes at the first base station, commanding first the user equipment to perform a handover from the first base station to the second base station on a second component carrier to be operated according to the straight scheduling method in the second base station, when it is determined that a handover on a first component carrier following the cross scheduling method is to be executed.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: July 30, 2019
    Assignee: SONY CORPORATION
    Inventor: Hiroaki Takano
  • Patent number: 10356826
    Abstract: Apparatuses, methods, and systems of a node that supports a simultaneous bidirectional wireless link with a second node are disclosed. One embodiment of the node includes a first sector that includes a first transceiver and a first plurality of antennas operative to form a beam directed to a first sector of a second node. The node further includes a second sector that includes a second transceiver and a second plurality of antennas operative to form a beam directed to a second sector of the second node. For at least one time slot of a plurality of time slots, one of the first transceiver or the second transceiver is operative to transmit a first communication signal to the second node while the other of the first transceiver or the second transceiver is operative to receive a second communication signal from the second node.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: July 16, 2019
    Assignee: Facebook, Inc.
    Inventors: Djordje Tujkovic, Krishna Gomadam, Sanjai Kohli
  • Patent number: 10333758
    Abstract: Methods and systems are provided for converting wideband signals. In an example system, a wideband signal that includes one or more narrowband signals may be received and handled, with the handling may include selecting a subset of signal processing circuits, from a plurality of signal processing circuits in the system, with the number of selected signal processing circuits being less than the total number of signal processing circuits in the system. Only the selected signal processing circuits are then enabled, such that all remaining signal processing circuits are not enabled. Signal processing adjustment may then be applied, via the subset of signal processing circuits, only to the one or more narrowband signals, such that a remainder of the wideband signal is not adjusted. The handling of the received wideband signal may include separating the one or more narrowband signals from the wideband signal.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: June 25, 2019
    Assignee: MAXLINEAR ASIA SINGAPORE PTE LTD.
    Inventors: Ryan Santa, Bernard Guay
  • Patent number: 10305591
    Abstract: A detection apparatus and method for noise intensity and a coherent optical receiver where the detection method includes: preprocessing a received signal to obtain a pilot sequence contained in the received signal; removing a phase noise of a receiving pilot sequence by using a known transmitting pilot signal; calculating a noise power density of the receiving pilot sequence with no (or without) phase noise within a predetermined spectral width near a pilot frequency; and calculating power of a linear noise of the received signal based on a bandwidth of the received signal and the noise power density within the predetermined spectral width. Hence, linear noises and nonlinear noises may be split efficiently without introducing much complexity, and information on intensities of various noises may be obtained.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: May 28, 2019
    Assignee: FUJITSU LIMITED
    Inventors: Ying Zhao, Zhenning Tao
  • Patent number: 10295366
    Abstract: A sensor error correcting apparatus is provided with: a roll angle estimator configured to estimate a roll angle on the basis of a yaw rate of a moving body, a wheel speed, and lateral acceleration; a converter configured to convert the yaw rate to a horizontal yaw rate, on the basis of an estimated roll angle; and a zero point corrector configured to compare an azimuth change amount obtained by integrating the horizontal yaw rate in a turning period, which is from a start of turning of the moving body to an end of the turning, with an azimuth change amount of the velocity vector in the turning period, and configured to correct the measured lateral acceleration.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: May 21, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Noriyoshi Suzuki
  • Patent number: 10291358
    Abstract: An embodiment of the present invention discloses a data sending and receiving method. A first FEC unit of a sending device sends, by using a first channel, a first data stream on which first FEC encoding has been performed; a second FEC unit of the sending device sends, by using a second channel, a second data stream on which second FEC encoding has been performed; and the sending device performs interleaving on the first data stream and the second data stream, to obtain an output data stream, and sends the output data stream to a receiving device and error correction capability of a receiving device could be improved. In addition, in the present invention, an operation of writing by row and reading by column does not need to be performed. Therefore, no delay is generated.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: May 14, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Wenbin Yang, Tongtong Wang, Xinyuan Wang
  • Patent number: 10285065
    Abstract: Methods and apparatuses pertaining to long-range low-power integrated wireless transmission in channel gaps and guard spectrum are described. A method may involve facilitating wideband wireless communications in a plurality of wideband channels in a frequency spectrum with every two adjacent wideband channels of the plurality of wideband channels separated by a respective channel gap therebetween. The method may also involve facilitating narrowband wireless communications, while facilitating the wideband wireless communications, in a plurality of narrowband channels that are multiplexed in the channel gaps, guard bands at both ends of the frequency spectrum, or both.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: May 7, 2019
    Assignee: MediaTek Inc.
    Inventor: Yasantha Rajakarunanayake
  • Patent number: 10250360
    Abstract: Embodiments of the invention provide a decoder for decoding a signal received through a transmission channel in a communication system, said signal comprising a vector of information symbols, wherein the decoder comprises: a processing unit (307) configured to determine at least one candidate set of division parameters and to perform a division of said vector of information symbols into a set of sub-vectors in association with each candidate set of division parameters, each pair of sub-vectors being associated with a division metric; a selection unit (309) configured to select one of said candidate sets of division parameters according to a selection criterion depending on said division metric; and a decoding unit (311) configured to determine at least one estimate of each sub-vector associated with said selected set of division parameters by applying a symbol estimation algorithm, wherein the decoder is configured to determine at least one estimate of the vector of information symbols from said at least
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: April 2, 2019
    Assignee: INSTITUT MINES-TELECOM
    Inventors: Asma Mejri, Ghaya Rekaya Ben-Othman, Mohammed-Achraf Khsiba
  • Patent number: 10236989
    Abstract: Systems and methods for data transport in an optical communications system, including generating a pairwise optimized (PO) multi-dimensional signal constellation in a single stage. The PO multi-dimensional signal constellation is generated by selecting a pair of symbols from a received constellation with M symbols, defining and minimizing an objective function with one or more constraints to optimize the selected pair of symbols, and iteratively selecting and optimizing one or more different pairs of symbols from the received constellation until a threshold condition is reached. Neighbor symbols from the generated PO multi-dimensional signal constellation in each polarization are clustered to formulate a clustered PO multi-dimensional signal constellation, and data is modulated and transmitted in accordance with the clustered PO multi-dimensional signal constellation.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: March 19, 2019
    Assignee: NEC Corporation
    Inventors: Shaoliang Zhang, Fatih Yaman, Eduardo Mateo Rodriguez, Yoshihisa Inada
  • Patent number: 10211880
    Abstract: A system, method, and computer program product for chaotically generating a pseudorandom number sequence, such as for use in spread spectrum communications systems and in cryptographic systems. Chaotically generated pseudorandom numbers are not cyclostationary in nature, so output values encoded via such non-cyclostationary bases have no clear correlations. Spread signal communications systems using chaotically generated spreading codes thus operate without rate line artifacts, increasing their resistance to signal detection and to determinations of underlying signal chip rates and signal symbol rates. Broadcasts and guided transmissions (including either conductive wire or optical transmission media), in both radio frequency and optical systems are supported. Common spread spectrum communications systems including DSSS and FHSS may be strengthened through the use of chaotically generated spreading codes.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: February 19, 2019
    Assignee: Raytheon Company
    Inventors: Gary M. Graceffo, Andrew Kowalevicz
  • Patent number: 10187235
    Abstract: A synchronizer can include a symbol estimator, an inner-pattern de-mapper, a timing tracker, and a correlator. The symbol estimator can be configured to estimate one or more symbols of a received signal based on a phase signal. The inner-pattern de-mapper can be configured to de-map the one or more symbols to generate an inner-pattern de-mapped symbol estimation. The timing tracker can be configured to accumulate the inner-pattern de-mapped symbol estimation and to determine a peak position based on the accumulated inner-pattern de-mapped symbol estimation. The correlator can be configured to correlate the accumulated inner-pattern de-mapped symbol estimation based on a reference signal. The correlation of the accumulated inner-pattern de-mapped symbol estimation can be independent of a signal over sampling rate (OSR). The synchronizer can be adapted in a long range Bluetooth low energy (BLE) receiver.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: January 22, 2019
    Assignee: Intel IP Corporation
    Inventor: Yuwei Zhang
  • Patent number: 10187133
    Abstract: A system and machine-implemented method are described for adjusting communication with a first distributed-input-distributed-output (DIDO) client. For example, a method according to one embodiment of the invention comprises: applying DIDO weights to one or more data streams to generate one or more DIDO precoded data streams; receiving input channel quality information (CQI) and/or channel state information (CSI) related to DIDO communication channels over which the DIDO precoded data streams are to be transmitted; determining a power scaling factor based on the CQI and/or CSI; and applying the power scaling factor to each of the DIDO precoded data streams.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: January 22, 2019
    Assignee: REARDEN, LLC
    Inventors: Antonio Forenza, Stephen G. Perlman
  • Patent number: 10117250
    Abstract: A base station includes a transmitter configured to transmit a downlink control information to a user equipment, the downlink control information being generated based on one of (1) a first uplink allocation information indicating a first frequency block corresponding to a first plurality of subcarriers which are contiguous in frequency and (2) a second uplink allocation information indicating a second frequency block corresponding to a second plurality of subcarriers which are contiguous in frequency and a third frequency block corresponding to a third plurality of subcarriers which are contiguous in frequency, the second frequency block and the third frequency block being separated in frequency.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: October 30, 2018
    Assignee: NEC CORPORATION
    Inventors: Takamichi Inoue, Kenji Koyanagi, Le Liu, Yoshikazu Kakura
  • Patent number: 10110252
    Abstract: Multiple data permutation operations in respective different dimensions are used to provide an overall effective data permutation using smaller blocks of data in each permutation than would be used in directly implementing the overall permutation in a single permutation operation. Data that has been permuted in one permutation operation is block interleaved, and the interleaved data is then permuted in a subsequent permutation operation. A matrix transpose is one example of block interleaving that could be applied between permutation operations.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: October 23, 2018
    Assignee: INPHI CORPORATION
    Inventors: Arash Farhoodfar, Frank R. Kschischang, Benjamin P. Smith, Andrew Hunt
  • Patent number: 10096322
    Abstract: An audio decoder configured to produce an audio signal from a bitstream containing audio frames includes: a core band decoding module configured to derive a directly decoded core band audio signal from the bitstream; a bandwidth extension module configured to derive a parametrically de-coded bandwidth extension audio signal from the core band audio signal and from the bitstream, wherein the bandwidth extension audio signal is based on a frequency domain signal having at least one frequency band; and a combiner configured to combine the core band audio signal and the bandwidth extension audio signal so as to produce the audio signal; wherein the bandwidth extension module includes an energy adjusting module being configured in such way that in a current audio frame in which an audio frame loss occurs, an adjusted signal energy for the cur-rent audio frame for the at least one frequency band is set.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: October 9, 2018
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Jérémie Lecomte, Fabian Bauer, Ralph Sperschneider, Arthur Tritthart
  • Patent number: 10091779
    Abstract: To solve a problem that although the increase of the number of frequency blocks by allocating discontinuous subcarriers (RBs) as in OFDM enables an increase in multi-diversity effect and an improvement in throughput, the number of RB allocation patterns increases with the increase of the number of frequency blocks, resulting in an increase in the amount of information relating to the allocated RBs, the resource block allocation unit is determined when resource blocks discontinuous on the frequency axis are allocated to a terminal, and the number of bits of scheduling information indicating the allocated resource blocks by using Tree Based is set to the number of bits corresponding to the determined allocation unit.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: October 2, 2018
    Assignee: NEC CORPORATION
    Inventors: Kenji Koyanagi, Takamichi Inoue, Le Liu, Yoshikazu Kakura
  • Patent number: 10075254
    Abstract: A signal transmitting method includes: constructing data for first antenna and data for second antenna, where the data for first antenna comprises first transmission data that needs to be transmitted to a first device, transmission data that needs to be transmitted to a second device, and a parameter of a transmission channel from a second antenna to the first device; and using the first antenna and the second antenna to transmit the data for first antenna and the data for second antenna to the first device and the second device respectively, so that the first device cancels interference caused by the transmission data that needs to be transmitted to the second device in the data for first antenna and the data for second antenna, to the first transmission data and the second transmission data.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: September 11, 2018
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Rongdao Yu, Sheng Liu
  • Patent number: 10069542
    Abstract: The invention relates to a wireless communications system for communicating with user equipment located inside a physical structure. The system comprise a node having at least two antenna ports and being adapted for wireless communication with the user equipment, and at least one leaky cable having two ends wherein each end of the at least one leaky cable is connected to one of the antenna ports of the node. The at least one leaky cable is provided at least partially inside the physical structure and being adapted for wireless communication over a radio channel with the user equipment.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: September 4, 2018
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Mikael Coldrey, Henrik Asplund, Martin Johansson, Andreas Nilsson
  • Patent number: 10044593
    Abstract: A system is provided for controlling the flow of data-packet traffic through an Ethernet telecommunications network having a multiplicity of nodes interconnected by multiple network links. Incoming data-packet traffic from multiple customer connections are received at a first node for entry into the network via the first node. Flow control messages are generated to represent the states of the first node and, optionally, one or more network nodes upstream from the first node, and these states are used as factors in controlling the rate at which the incoming packets are admitted to the network. Alternatively, the flow control messages may be used to control the rate at which packets generated by a client application are transmitted to the first node.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: August 7, 2018
    Assignee: Ciena Corporation
    Inventors: Natalie Giroux, Ken Young, Brian Smith, Chris Barrett, Pablo Frank
  • Patent number: 9973215
    Abstract: The system described herein provides for the use of FEC in connection with mulithoming/multipathing functionality in a system leveraging multiple pathways and/or access circuits for packet delivery in a data network. In an appliance using multipathing, sophisticated path characterization, scheduling, and sequencing algorithms are used to support path aggregation independent of the heterogeneity in path characteristics. Adding FEC to a controlled multipathing solution may reduce the perceived loss rate, contribute to better performance in terms of delay and throughput, and provide for a more effective use of FEC. A multipathing solution splits network traffic at the packet level according to network and connection conditions. FEC may be added to the packets in connection with transmission of the packets along the multiple paths and the level/amount of the FEC coding may be controlled based on the ratio of the rate at which the packets are split among the multiple paths.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: May 15, 2018
    Assignee: EMC IP Holding Company LLC
    Inventors: Raghupathy Sivakumar, Aravind Velayutham
  • Patent number: 9967013
    Abstract: A method for transmitting feedback information to a base station by a user equipment, for massive antenna array based beamforming in a wireless communication system is disclosed. The method includes receiving information about a plurality of pilot patterns for a massive antenna array from the base station, estimating a plurality of channels corresponding to the plurality of pilot patterns by receiving a pilot signal based on the plurality of pilot patterns, and transmitting the feedback information for the plurality of channels to the base station, wherein the feedback information includes information about whether closed-loop beamforming or open-loop beamforming is applied to the plurality of channels and information about an effective antenna array for the plurality of channels.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: May 8, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Jiwon Kang, Kilbom Lee, Kitae Kim
  • Patent number: 9887866
    Abstract: Methods and systems are provided for converting wideband analog radio frequency (RF) signals. In an implementation, a first wideband analog RF signal may be received and handled. The first wideband analog RF signal comprises one or more first narrowband analog RF signals, with a total of bandwidths of the one or more first narrowband analog RF signals is less than a total bandwidth of the first wideband analog RF signal. Handling the first wideband analog RF signal may including selecting a first subset of analog-to-digital converters (ADCs) from a plurality of analog-to-digital converters (ADCs), with the number of ADCs in the first subset of ADCs being less than a total number of ADCs in the plurality of ADCs, and only the first subset of ADCs may be enabled. Only the one or more first narrowband analog RF signals may be analog-to-digital converted via the first subset of ADCs.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: February 6, 2018
    Assignee: MAXLINEAR ASIA SINGAPORE PTE LTD.
    Inventors: Ryan Santa, Bernard Guay
  • Patent number: 9871620
    Abstract: For using best M method in a mixed subband/miniband environment a Mobile Station Apparatus calculates a metric for sending information corresponding to the metric to a base station.
    Type: Grant
    Filed: April 27, 2009
    Date of Patent: January 16, 2018
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Shaohua Li, Xin Qi
  • Patent number: 9871565
    Abstract: A Multiple Input Multiple Output (MIMO) communication method and system for performing communication between N (N is an integer greater than or equal to 2) transmitting devices each having a transmit antenna and at least one receiving device having N receive antennas by using a multi-user MIMO scheme. The method includes dividing the N transmitting devices into a plurality of sets, and assigning an orthogonal code to each set of transmitting devices as a digital signal sequence to be transmitted by each of the transmitting devices, and arranging the digital signal sequences to be transmitted by the transmitting devices in a frequency axis direction in which an inverse fast Fourier transform is performed, and performing coding.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: January 16, 2018
    Assignees: Sony Corporation, Sony Mobile Communications Inc.
    Inventor: Shigeo Kusunoki
  • Patent number: 9866335
    Abstract: Testing circuit with directional coupler. A testing circuit can include a testing circuit input configured to receive an output signal from a module, the output signal having a fundamental component and a harmonic component. The testing circuit can further include a testing circuit fundamental output configured to output the fundamental component and a testing circuit harmonic output configured to output the harmonic component. The testing circuit can include a first directional coupler having a first coupler input coupled to the testing circuit input, a first transmitted output coupled to the testing circuit fundamental output, and a first coupled output coupled to the testing circuit harmonic output.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: January 9, 2018
    Assignee: Skyworks Solutions, Inc.
    Inventor: Zelman Hernandez
  • Patent number: 9867190
    Abstract: A method for improving LTE connectivity in known trouble areas is disclosed. The method includes receiving, at an eNodeB, a communication message from a mobile device and determining a first timing advance (TA) information associated with the communication message received from the mobile device. Based on the first TA information it is determined if the mobile device is located in an area susceptible to a communication failure. Upon determining that the mobile device is located in the area susceptible to the communication failure, messages are temporality transmitted from the eNodeB to the mobile device at an increased power level.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: January 9, 2018
    Assignee: Verizon Patent and Licensing Inc.
    Inventor: David Sanjiv Sinnaduray
  • Patent number: 9853848
    Abstract: In a multi-carrier wireless system, potential problems from reconfiguring mobile station resources to accommodate changes in component-carrier configuration are mitigated by inserting a guard period each time the configuration of component carriers changes, so that transceiver reconfiguration can be carried out without interfering with ongoing transmission. A base station is configured to transmit data to a mobile station according to a first configuration of two or more component carriers, to determine that a change of configuration to a second component-carrier configuration is required, and to signal the change of configuration to the mobile station, using the first configuration of component carriers. The base station then refrains from transmitting data to the mobile station during a pre-determined guard interval of at least one transmission-time interval subsequent to the signaling of the change of configuration.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: December 26, 2017
    Assignee: OPTIS WIRELESS TECHNOLOGY, LLC
    Inventors: Ghyslain Pelletier, Lars Sundstrom
  • Patent number: 9838092
    Abstract: A Multiple Input Multiple Output (MIMO) communication method and system for performing communication between N (N is an integer greater than or equal to 2) transmitting devices each having a transmit antenna and at least one receiving device having N receive antennas by using a multi-user MIMO scheme. The method includes dividing the N transmitting devices into a plurality of sets, and assigning an orthogonal code to each set of transmitting devices as a digital signal sequence to be transmitted by each of the transmitting devices, and arranging the digital signal sequences to be transmitted by the transmitting devices in a frequency axis direction in which an inverse fast Fourier transform is performed, and performing coding.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: December 5, 2017
    Assignees: Sony Corporation, Sony Mobile Communications Inc.
    Inventor: Shigeo Kusunoki
  • Patent number: 9838094
    Abstract: Disclosed herein is a method for generating transmitted signals. The method includes selecting a reference resource element (RE) from an RE group including a plurality of REs, generating a common precoder to be shared among the plurality of REs of the RE group based on channel information of the reference RE, generating primary signals, which are precoding signals of the plurality of REs, by applying the common precoder to transmitted data for the plurality of REs, and generating secondary signals by compensating for the primary signals of the REs except for the reference RE among the plurality of REs using channel information of the REs.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: December 5, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Kilbom Lee, Jiwon Kang, Kitae Kim
  • Patent number: 9826425
    Abstract: The present invention relates to a method for transmitting channel state information of a terminal in a multi-carrier system, and to a terminal using the method. The method comprises the steps of: receiving reference signals from a base station via a plurality of downlink component carriers; measuring a channel state for each of the plurality of downlink component carriers using the reference signals included in the plurality of downlink component carriers; generating channel state information on a portion of the plurality of downlink component carriers; and transmitting to the base station the channel state information on a portion of the plurality of downlink component carriers and/or an index which indicates the portion of the plurality of downlink component carriers.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: November 21, 2017
    Assignee: LG Electronics Inc.
    Inventors: Min Gyu Kim, Suck Chel Yang, Joon Kui Ahn, Dong Youn Seo
  • Patent number: 9813850
    Abstract: An asset tracking system that utilizes a wireless network system and which includes primary (active) and secondary (passive) tracking devices. The primary tracking device acts as a coordinator and the secondary devices surrounding the coordinator act as end-devices. Each secondary device can communicate only with the primary device. The primary device passes messages (data) from the secondary devices to the remote host transparently. Each secondary device only sends its data when it triggered by a ‘ping’ from the primary device. When a ping event occurs, the primary device broadcasts a main data packet, in some embodiments followed by two additional data packets. Within this time span of the primary data packet, the secondary devices send their data packets to the primary device, in some embodiments, as two small data packets.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: November 7, 2017
    Assignee: Senaya, Inc.
    Inventors: Brian Lee, Jamshed Dubash, Jahangir Nakra, Dadi Setiadi
  • Patent number: 9814037
    Abstract: A method for selecting at least one parameter for downlink data transmission with a mobile user equipment. The method is executable by a wireless communication base station having multiple antennas configured to communicate wirelessly with the mobile user equipment. The method receives an uplink probing signal from the mobile user equipment. The method determines a plurality of angles of arrival for a corresponding plurality of paths between the mobile user equipment and the multiple antennas. The method transmits a plurality of downlink probing signals directionally toward corresponding angles of arrival in the plurality of angles of arrival. Each downlink probing signal is a virtual antenna port with respect to the mobile user equipment. The method receives channel state information. The method composes at least one of a rank indicator (RI), precoding matrix indicator (PMI), or modulating and coding scheme (MCS) for downlink data transmission to the mobile user equipment.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: November 7, 2017
    Assignee: Intel Corporation
    Inventors: Feng Xue, Qinghua Li, Yuan Zhu
  • Patent number: 9813108
    Abstract: A method of generating a BOC correlation function based on partial correlation functions, an apparatus for tracking a BOC signal, and a spread spectrum signal receiver system using the same are disclosed herein. The apparatus includes a frequency offset compensation unit, a local code generation unit, a mixer, a delay lock loop (DLL), a phase lock loop (PLL), and a data extraction unit. The frequency offset compensation unit outputs a compensated received signal with respect to a received signal. The local code generation unit generates a delay-compensated local code based on a code delay value. The mixer mixes the delay-compensated local code with the frequency offset-compensated received signal. The DLL repeatedly tracks and calculates a code delay value. The PLL repeatedly calculates a carrier frequency compensation value. The data extraction unit extracts spreading data from a mixture of the delay-compensated local code and the compensated received signal.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: November 7, 2017
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Keun Hong Chae, Seok Ho Yoon
  • Patent number: 9801153
    Abstract: Embodiments describe determining position by selecting a set of digital pseudorandom sequences. The magnitudes of the cross-correlation between any two sequences of the chosen set are below a specified threshold. A subset of digital pseudorandom sequences are selected from the set such that the magnitudes of the autocorrelation function of each member of the subset, within a specified region adjacent to the peak of the autocorrelation function, are equal to or less than a prescribed value. Each transmitter transmits a positioning signal, and at least a portion of the positioning signal is modulated with at least one member of the subset. At least two transmitters of the plurality of transmitters modulate respective positioning signals with different members of the subset of digital pseudorandom sequences.
    Type: Grant
    Filed: November 29, 2014
    Date of Patent: October 24, 2017
    Assignee: NextNav, LLC
    Inventors: Arun Raghupathy, Norman F. Krasner
  • Patent number: 9794118
    Abstract: The operating configuration at a node in a wireless communication network, at a neighboring node in the network, and/or at one or more wireless devices supported by the network, is updated based on determining timing information for an impending interruption of a radio link in the network to avoid erroneous operation during the impending interruption, which interruption is associated with an external system. The determination of interruption timing, which may be inferred, e.g., from detecting prior interruptions, or which may be known from information about the external system, and the modification of the operating configuration(s) permits the network to operate with greater stability, control, and accuracy during the interruptions than would be possible if the interruptions were simply treated as intermittent radio link failures.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: October 17, 2017
    Assignee: TELEFONAKTOEBOLAGET LM ERICSSON (PUBL)
    Inventors: Muhammad Kazmi, Joakim Axmon, Walter Müller
  • Patent number: 9794182
    Abstract: A network device such as a router or switch, in one embodiment, includes a timing analyzer which is capable of providing timing analysis over one or more network circuits. The timing analyzer, in one aspect, receives a data packet traveling across a circuit emulation service (“CES”) circuit such as T1 or E1 circuit. Upon obtaining an arrival timestamp associated with the data packet, the arrival timestamp is stored in a timestamp buffer in accordance with a first-in first-out (“FIFO”) storage sequence. After identifying the oldest arrival timestamp in the timestamp buffer, an offset is generated based on the result of comparison between the arrival timestamp and the oldest timestamp. The timing analyzer can also be configured to generate timing reports on-demand based on generated offset(s).
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: October 17, 2017
    Assignee: Tellabs Operations, Inc.
    Inventors: Anthony Leonard Sasak, Christopher V. O'Brien
  • Patent number: 9787356
    Abstract: An equalizer includes an equalizer circuit including a signal input to receive a first frequency-domain signal, another signal input to receive a second frequency-domain signal, and an equalized signal output to provide a first equalized signal based upon the first and second frequency-domain signals. Another equalizer circuit includes a signal input to receive a third frequency-domain signal, another signal input to receive a fourth frequency-domain signal, and an equalized signal output to provide a second equalized signal based upon the third and fourth frequency-domain signals. A third equalizer circuit includes a signal input coupled to the equalized signal output of the first equalizer circuit to receive the first equalized signal, another signal input coupled to the equalized signal output of the second equalizer circuit to receive the second equalized signal, and an equalized signal output to provide a third equalized signal based upon the first and second equalized signals.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: October 10, 2017
    Assignee: NXP USA, Inc.
    Inventors: Igor Levacov, Haim Bareket, Roi Menahem Shor
  • Patent number: 9779274
    Abstract: An apparatus for use in an RFID data collection system includes an antenna portion for wirelessly exchanging signals and a memory portion for storing RFID data. A signal processing portion is coupled among the antenna portion and the memory portion. The signal processing portion is configured to receive RFID data and to at least encode or decode the received RFID data via at least one spreading code, such as a mutually orthogonal code. Other configurations are also disclosed.
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: October 3, 2017
    Assignee: INTERMEC IP CORP.
    Inventors: Paul A. Maltseff, Ronald D. Payne
  • Patent number: 9749048
    Abstract: A connector provided on a projector has an RF chip. A plug connected to the connector has an RF chip at a position opposite to the RF chip of the connector. When a protruding section of the plug is inserted and fit into an aperture section of the connector, the RF chip of the plug and the RF chip of the connector perform wireless communication with each other in a non-contact state. Thus, a connecting tool can be easily attached to/detached from a receiving tool without breaking a terminal due to contact such as in a case where a conventional contact type terminal is used.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: August 29, 2017
    Assignee: Sony Corporation
    Inventors: Koichiro Kishima, Ayataka Nishio, Tamotsu Yamagami
  • Patent number: 9749056
    Abstract: Optical network devices and method for optical network communications in discrete multi-tone (DMT) are provided. A serial information signal is converted to groups of bits and loaded to parallel processing branches based on bit rates of the parallel processing branches. Each branch is configured to encode the associated group of data bits on the associated tone. A first bit rate and modulation and power allocation to a first branch of the branches may be different from a second bit rate and modulation and power allocation to a second branch of the branches. To recover the incoming data, the encoded signal may be parallel-processed using branches with different demodulation formats and provide the serial data stream.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: August 29, 2017
    Assignee: HUAWEI TECHNOLOGIES CO., LTD
    Inventors: Chuandong Li, Zhuhong Zhang, Mahdi Zamani
  • Patent number: 9749878
    Abstract: A system, method and device for adjusting communication parameters for networks communicating with a communication device are provided. The method comprises: when the communication device is linked to a first communication network and a second communication network, comparing a strength of received signals from the second network against a threshold; and when the strength of the received signals is less than the threshold, adjusting a network parameter of signals received from the second communication network by the communication device.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: August 29, 2017
    Assignee: BLACKBERRY LIMITED
    Inventors: Lizhong Zhu, Fei He, Yan Wu, Qingmai Zhou, Jun Xu, Michael Peter Montemurro, Zongyou Zhang
  • Patent number: 9723560
    Abstract: An apparatus includes a first amplifier stage configured to amplify a first carrier signal. The apparatus includes a second amplifier stage configured to amplify a second carrier signal. A resistive-capacitive (RC) network is coupled to the first amplifier stage and to the second amplifier stage. The RC network includes a resistive element coupled to a capacitive element.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: August 1, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Ahmed Abdel Monem Youssef, Wingching Vincent Leung, Rui Xu, Udara Charman Fernando, Ketan Humnabadkar, Tsai-Chen Huang, Li-Chung Chang
  • Patent number: 9698927
    Abstract: Certain aspects of the present disclosure propose techniques for independently signaling features supported by a user equipment (UE) in different duplexing modes. The UE may be capable of communicating in frequency division duplexing (FDD) and time division duplexing (TDD) modes. The UE may obtain a FDD-specific feature group indicators (FGIs) set and a TDD-specific FGIs set, and signal at least one of the FDD-specific FGIs set or TDD-specific FGIs set. In addition, the UE may take one or more actions to reduce the likelihood of transitioning to a mode of operation that is different from its current mode of operation.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: July 4, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Thomas Klingenbrunn, Lorenzo Casaccia, Bhupesh Manoharlal Umatt, Pradeep Sagane Gowda, Daniel Amerga, Shyamal Ramachandran, Muralidharan Murugan, Swaminathan Sureshchandran, Dinesh Dharmaraju, Sudhir S. Halbhavi, Vitaly Drapkin, Raghu Narayan Challa
  • Patent number: 9668256
    Abstract: To solve a problem that although the increase of the number of frequency blocks by allocating discontinuous subcarriers (RBs) as in OFDM enables an increase in multi-diversity effect and an improvement in throughput, the number of RB allocation patterns increases with the increase of the number of frequency blocks, resulting in an increase in the amount of information relating to the allocated RBs, the resource block allocation unit is determined when resource blocks discontinuous on the frequency axis are allocated to a terminal, and the number of bits of scheduling information indicating the allocated resource blocks by using Tree Based is set to the number of bits corresponding to the determined allocation unit.
    Type: Grant
    Filed: April 19, 2016
    Date of Patent: May 30, 2017
    Assignee: NEC CORPORATION
    Inventors: Kenji Koyanagi, Takamichi Inoue, Le Liu, Yoshikazu Kakura
  • Patent number: 9622196
    Abstract: A method in a network node comprises providing to a user equipment a dedicated physical control channel (DPCCH), the DPCCH having an associated first fractional dedicated physical channel (F-DPCH) for conveying transmit power control commands to the user equipment for power controlling the DPCCH, and providing to the user equipment a secondary dedicated physical control channel (S-DPCCH), the S-DPCCH comprising an uplink control channel for communicating transmit power control commands, the S-DPCCH having an associated second F-DPCH for conveying transmit power control commands to the user equipment for power controlling the S-DPCCH. The method comprises receiving, from the user equipment, a downlink transmit power control command, the downlink transmit power control command carried on the S-DPCCH; and controlling a transmit power of the second F-DPCH associated with the S-DPCCH based on the downlink transmit power control command carried on the S-DPCCH.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: April 11, 2017
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Yi-Pin Eric Wang, Erik Larsson, Michael Samuel Bebawy, Zhang Zhang, Peter von Wrycza
  • Patent number: 9614597
    Abstract: Disclosed are a method, device and system for transmitting a Multi-user Multiple-Input-Multiple-Output (MU-MIMO) pilot and data. The method includes: when at least two terminals transmit a MU-MIMO pilot and data on one same time/frequency resource, constructing a k-stream SU-MIMO pilot and data; based on the configuration mode of the k-stream SU-MIMO pilot, modifying demodulation pilot port parameters of the at least two terminals; and based on the transmission mode of the k-stream SU-MIMO pilot and data, transmitting the k-stream SU-MIMO pilot and data to the at least two terminals, respectively. Further disclosed are a device and system for transmitting a MU-MIMO pilot and data.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: April 4, 2017
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Xiongshu Yi, Jing Yang, Lu Guan
  • Patent number: 9603102
    Abstract: Pilot signal transmission sequences and methods for use in a multi-sector cell. Pilots in different sectors are transmitted at different known power levels. In adjacent sectors a pilot is transmitted while no pilot is transmitted in the adjoining sector. This represents transmission of a NULL pilot signal. A cell NULL is also supported in which NULL pilots are transmitted in each sector of a cell at the same time. Multiple pilot signal measurements are made. At least two channel quality indicator values are generated from measurements corresponding to at least two pilot signals of different power levels. The two values are transmitted back to the base station which uses both values to determine the transmit power required to achieve a desired SNR at the wireless terminal. The wireless terminal also reports information indicating its location to a sector boundary.
    Type: Grant
    Filed: May 14, 2007
    Date of Patent: March 21, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Rajiv Laroia, John L. Fan, Junyi Li
  • Patent number: 9602232
    Abstract: A transmitting apparatus is disclosed. The transmitting apparatus includes an encoder to perform channel encoding with respect to bits and generate a codeword, an interleaver to interleave the codeword, and a modulator to map the interleaved codeword onto a non-uniform constellation according to a modulation scheme, and the constellation may include constellation points defined based on various tables according to the modulation scheme.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: March 21, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Se-ho Myung, Belkacem Mouhouche, Daniel Ansorregui Lobete, Kyung-joong Kim, Hong-sil Jeong
  • Patent number: 9590758
    Abstract: A transmitting apparatus is disclosed. The transmitting apparatus includes an encoder to perform channel encoding with respect to bits and generate a codeword, an interleaver to interleave the codeword, and a modulator to map the interleaved codeword onto a non-uniform constellation according to a modulation scheme, and the constellation may include constellation points defined based on various tables according to the modulation scheme.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: March 7, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Belkacem Mouhouche, Daniel Ansorregui Lobete, Hong-sil Jeong