Combining Or Distributing Information Via Frequency Channels Patents (Class 370/343)
  • Patent number: 10665960
    Abstract: A system is described, along with the related device and method, for transmission and/or reception of signals having electromagnetic modes with orbital angular momentum (OAM), wherein the device is adapted to receive, at its input, electromagnetic signals from at least one transmitter, and is configured to apply a discrete Fourier transform to the electromagnetic signals in order to generate the signals having electromagnetic modes with orbital angular momentum.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: May 26, 2020
    Assignees: RAI Radiotelevisione Italiana S.P.A., S.I.S.V.EL. Societa' Italiana Per Lo Sviluppo Dell'Elettronica S.P.A.
    Inventors: Bruno Sacco, Assunta De Vita
  • Patent number: 10666405
    Abstract: A wireless communication terminal is disclosed. The wireless communication terminal includes a transceiver configured to transmit/receive a wireless signal; and a processor configured to control an operation of the wireless communication terminal. The transceiver transmits a training signal to a base wireless communication terminal based on a sub-frequency band allocated from the base wireless communication terminal, and transmits data to the base wireless communication terminal through the sub-frequency band allocated from the base wireless communication terminal. The training signal is used, by the base wireless communication terminal, for receiving the data from the wireless communication terminal.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: May 26, 2020
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Juhyung Son, Jinsam Kwak, Geonjung Ko
  • Patent number: 10659206
    Abstract: Various embodiments are generally directed to an apparatus, method and other techniques to determine a bandwidth in a frequency band to communicate information to stations, determine an Orthogonal Frequency-Division Multiple Access (OFDMA) tone allocation scheme based on the bandwidth, the OFDMA tone allocation scheme to include one or more resource units each comprising a plurality of tones and each having a fixed location in the bandwidth, and communicate information to the stations based on the OFDMA tone allocation scheme.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: May 19, 2020
    Assignee: Intel IP Corporation
    Inventors: Shahrnaz Azizi, Thomas J. Kenney, Eldad Perahia, Robert Stacey
  • Patent number: 10560294
    Abstract: Techniques and apparatus for transmission and reception with partial allocation in orthogonal frequency division multiple access (OFDMA)/single-carrier frequency division multiple access (SC-FDMA) systems are provided. One technique includes determining first parameter(s) to apply to transmission/receive processing of a signal, based in part on a resource allocation for the signal. The resource allocation is partitioned out of a larger system bandwidth. Second parameter(s) to apply to the transmission/receive processing are determined based at least in part on the first parameter(s). Transmission/receive processing of the signal is performed in accordance with the first and second parameters.
    Type: Grant
    Filed: February 19, 2018
    Date of Patent: February 11, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Vijayvaradharaj Tirucherai Muralidharan, Shashidhar Vummintala, Gowrisankar Somichetty, Arvind Sridharan
  • Patent number: 10560126
    Abstract: A radio frequency (RF) transmitter includes a set of input ports to receive baseband samples of a signal to be transmitted on a set of disjoint frequency bands, a set of filter banks, there is one filter bank for each input port, each filter bank includes a plurality of digital polyphase interpolation filters to sample a shifted phase of the corresponding sequence of baseband samples and to interpolate the sampled phases to produce a plurality of sequences of interpolated baseband phased samples with the shifted phase, and a set of oscillators banks, each oscillator bank includes a plurality of polyphase Digital Direct Synthesizer (DDS) corresponding to the plurality of digital polyphase interpolation filters to generate a plurality of sequences of samples of digital waveform.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: February 11, 2020
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Rui Ma, Daniel Antonio Da Costa Dinis, Yukimasa Nagai
  • Patent number: 10547483
    Abstract: An OFDM transmitter and an OFDM receiver respectively transmit and receive N (N?2, N is an integer) control symbols. For each control symbol, a guard interval time-domain signal is, for example, identical to a signal obtained by frequency-shifting at least a portion of a useful symbol time-domain signal by an amount different from any other symbol, or to a signal obtained by frequency-shifting one or both of a portion and a span of a useful symbol interval time-domain signal different from any other symbol by a predetermined amount.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: January 28, 2020
    Assignee: SUN PATENT TRUST
    Inventors: Yoshinobu Matsumura, Tomohiro Kimura, Mikihiro Ouchi
  • Patent number: 10536845
    Abstract: A method of upgrading firmware by configuring a low data-rate radio frequency (RF) module using high frequency RF bands utilizes at least one remote server, a mobile device, and at least one end device. The end device includes at least one activation module, a high data-rate RF module, and a microcontroller. The mobile device includes a large configuration file for upgrading the firmware and changing the configuration settings of the end device. The activation module sends a power-up command to the microcontroller for activating the high data-rate RF module. Accordingly, the high data-rate RF module forms a connection with the mobile device, whereby the mobile device sends the large configuration file to the end device. The end device executes a firmware upgrade and modifies configuration in accordance with the large configuration file.
    Type: Grant
    Filed: August 15, 2018
    Date of Patent: January 14, 2020
    Inventor: Xin Hu
  • Patent number: 10505764
    Abstract: A signal sending method and apparatus to improve channel estimation accuracy of a receive end to improve data decoding accuracy of the receive end, where the method is applied to a system whose physical layer frame structure includes a preamble and a payload (PL) field. The method includes inserting one or more pilot time domain symbols between orthogonal frequency division multiplexing (OFDM) time domain symbols in the PL field to obtain a physical layer frame, and sending the physical layer frame to a receive end, where the preamble and the pilot time domain symbol are used together by the receive end to perform channel estimation.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: December 10, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventor: Yupeng Hu
  • Patent number: 10498373
    Abstract: A broadband sender system is provided. The broadband sender system comprises a radio frequency digital-to-analog converter. In this context, the radio frequency digital-to-analog converter is adapted to emit a baseband signal modulated on a carrier signal with a first intermediate frequency and a second intermediate frequency. In addition to this, the first intermediate frequency is higher than the second intermediate frequency.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: December 3, 2019
    Assignee: ROHDE & SCHWARZ GMBH & CO. KG
    Inventor: Martin Simon
  • Patent number: 10499148
    Abstract: A wireless microphone and/or in-ear monitoring system having a clock master prescribing a wordclock, and a clock slave to be synchronized to the wordclock. Between the clock master and the clock slave is a digital wireless transmission link which digitally transmits synchronization signals and audio signals. The clock master has a clock reference prescribing a first sample clock, and a first timer. A first phase of the first clock signal is detected after expiry of the first timer and is wirelessly transmitted to the clock slave, which has a second timer. After expiry of the second timer, a second phase of the second clock signal of the clock slave is detected and compared to the wirelessly transmitted first phase. The difference between the first and second phases is used as an input value as a control unit in the clock slave. The control unit adjusts an adjustable sample clock of the clock slave to correspond to the first clock.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: December 3, 2019
    Assignee: Sennheiser electronic GmbH & Co. KG
    Inventors: Sebastian Georgi, Jan Wetermann
  • Patent number: 10491252
    Abstract: A system that incorporates aspects of the subject disclosure may perform operations including, for example, obtaining uplink information associated with a downlink path, wherein the uplink information includes operational parameters used by a plurality of communication devices for transmitting wireless signals on a plurality of uplink paths, performing, based on the uplink information, a plurality of measurements of the plurality of uplink paths via a plurality of fiber optic cables from a plurality of remote radio units, wherein the plurality of uplink paths conform to a common public radio interface (CPRI) protocol, identifying a measurement from the plurality of measurements that is below a threshold, thereby indicating an affected uplink path of the plurality of uplink paths, and initiating a corrective action to improve a measurement of the affected uplink path based on the identifying. Other embodiments are disclosed.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: November 26, 2019
    Assignee: ISCO International, LLC
    Inventors: Igor Goodman, Amr Abdelmonem
  • Patent number: 10491266
    Abstract: In an ultra-wideband (“UWB”) receiver, a received UWB signal is periodically digitized as a series of ternary samples. During a carrier acquisition mode, the samples are continuously correlated with a predetermined preamble sequence to develop a correlation value. When the value exceeds a predetermined threshold, indicating that the preamble sequence is being received, estimates of the channel impulse response (“CIR”) are developed. When a start-of-frame delimiter (“SFD”) is detected, the best CIR estimate is provided to a channel matched filter (“CMF”). During a data recovery mode, the CMF filters channel-injected noise from the sample stream. Both carrier phase errors and data timing errors are continuously detected and corrected during both the carrier acquisition and data recovery modes of operation.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: November 26, 2019
    Assignee: Decawave Ltd.
    Inventors: Michael McLaughlin, Dries Neirynck, Ciaran McElroy
  • Patent number: 10455488
    Abstract: Various embodiments disclosed herein provide for facilitating a discontinuous access to unlicensed spectrum in a new radio access environment. According an embodiment, a system can comprise performing a scanning procedure that determines whether a first subband and a second subband is available for transmission. The system can further facilitate determining whether the first subband and the second subband are adjacent, wherein a first channel formed at the first subband comprising a first guard band and a second channel formed at the second subband comprising a second guard band that is adjacent to the first guard band. The system can further facilitate in response to determining that the first subband and the second subband are adjacent and available for transmission, eliminating the first guard band and the second guard band.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: October 22, 2019
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Ralf Bendlin, Aditya Chopra, Arunabha Ghosh, Abdulrauf Hafeez
  • Patent number: 10425212
    Abstract: Format of a downlink control channel for a user equipment UE is changed in conjunction with switching the UE between being enabled for cross carrier scheduling and being disabled for cross carrier scheduling. The changed format is used on at least one serving cell of the UE's configured set of component carriers CCs. In one embodiment the changed format comprises an explicit carrier indicator field CIF for the case in which the switching is from disabled to enabled; and the changed format has no explicit CIF when the switching is from enabled to disabled. In another embodiment switching from disabled to enabled comprises the UE's configured set of CCs being changed from one to multiple cells; and switching from enabled to disabled comprises the UE's configured set of CCs being changed from multiple cells to one cell. In one embodiment the changed format is implicit.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: September 24, 2019
    Assignee: CELLULAR COMMUNICATIONS EQUIPMENT LLC
    Inventors: Woonhee Hwang, Jarkko T. Koskela, Esa M. Malkamaki
  • Patent number: 10425175
    Abstract: A transmission control method is disclosed. The transmission control method includes: sending, by a base station, downlink data to a terminal at a high frequency when detecting that the downlink data needs to be transmitted at the high frequency; and sending, by the terminal to the base station at the high frequency, control information used for assisting the base station in improving transmission quality of the high frequency downlink data, so that the base station controls a transmission process of the high frequency downlink data according to the control information. Embodiments of the present invention further disclose a base station and a terminal. By means of the present invention, a terminal can rapidly feed back control information at a high frequency in a process in which downlink data is transmitted at a high frequency, and a feedback time is short.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: September 24, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Fan Wen, Lanjie Yuan, Huang Huang
  • Patent number: 10405313
    Abstract: Provided are a base station and a wireless communication method with which it is possible to avoid the effect of interference affecting another wireless communication system in a common band of wireless communication, and to provide high-speed communication service. The present invention has a configuration provided with a base station (30x) in which, when the other wireless communication system is not using the common band, a 3 MHz or 5 MHz carrier of the host system is used in which throughput is improved in comparison to a carrier having the frequency width of the other wireless communication system, and when the other wireless communication system is using the common band, a 1.4 MHz carrier of the host system is used having a smaller frequency width than the other wireless communication system.
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: September 3, 2019
    Assignee: KYOCERA Corporation
    Inventor: Toshinori Iinuma
  • Patent number: 10404372
    Abstract: A system for processing an electromagnetic signal is described, wherein the system comprises a transmission path with limited dynamic range and a pre-selection unit that is positioned upstream the transmission path. The pre-selection unit is configured to pre-select signal portions and to control the level of the output electromagnetic signal. Further, a method for processing an electromagnetic signal is described.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: September 3, 2019
    Assignee: Rohde & Schwarz GmbH & Co. KG
    Inventors: Thomas Nowak, Christian Volle
  • Patent number: 10396592
    Abstract: Systems for providing operating reserves to an electric power grid are disclosed. In one embodiment, a system comprises at least one power consuming device, at least one controllable device, and a client device constructed and configured in network communication. The at least one controllable device is operably coupled to the at least one power consuming device. The at least one controllable device is operable to control a power flow from the electric power grid to the at least one power consuming device responsive to power control instructions from the client device. Each of the at least one power consuming device has an actual value of power reduced and/or to be reduced based on revenue grade metrology, and confirmed by measurement and verification. The actual value of power reduced and/or to be reduced is a curtailment value as supply equivalence and provides operating reserve for the electric power grid.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: August 27, 2019
    Assignee: CAUSAM ENERGY, INC.
    Inventor: Joseph W. Forbes, Jr.
  • Patent number: 10394268
    Abstract: A client device manages consumption of power supplied by an electric utility to power consuming devices. Power flow to the power consuming devices is selectively enabled and disabled by one or more controllable devices controlled by the client device. The client device receives a power control message from a load management server. The power control message indicates at least one of an amount of electric power to be reduced and an identification of at least one controllable device to be instructed to disable a flow of electric power to one or more associated power consuming devices. Responsive to the power control message, the client device issues a power management command to one or more controllable devices under the client device's control. The power management command causes the one or more controllable devices to disable a flow of electric power to the one or more associated power consuming device.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: August 27, 2019
    Assignee: CAUSAM ENERGY, INC.
    Inventor: Joseph W. Forbes, Jr.
  • Patent number: 10389466
    Abstract: The present invention provides a method for mitigating inter-cell interference. To this end, the present invention includes a second signal transmission step in which, when a transmission symbol to be transmitted to a first receiver is S and a transmission symbol to be transmitted to a second receiver is Z, a symbol S2k (k is an integer) is transmitted to the first receiver through a first transmission antenna according to a first pattern, a symbol S2k* is transmitted to the first receiver through a second transmission antenna, a symbol S2k+1 is transmitted to the first receiver through a third transmission antenna, a symbol S2k+1* is transmitted to the first receiver through a fourth transmission antenna, and symbols Z4k to Z4k+3 and symbols Z4k* to Z4k+3* are transmitted to the second receiver through fifth to eighth transmission antennas according to a second pattern different from the first pattern.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: August 20, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Kungmin Park, Heejeong Cho, Hyunsoo Ko, Hyeyoung Choi, Ilmu Byun
  • Patent number: 10348338
    Abstract: A signal identification system includes an analog adaptive channelizer having a plurality of channels. Each channel has a channel size defined by a bandwidth and a gain. The system further includes an electronic signal identification (ID) controller in signal communication with the analog adaptive channelizer. The ID controller is configured to determine a dynamic range event that modifies an energy level of an affected channel among the plurality of channels, and output a feedback signal including channel parameters based on the dynamic range event. The analog adaptive channelizer actively adjusts at least one of the bandwidth and the gain of the affected channel based on the feedback to change the channel size of the affected channel.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: July 9, 2019
    Assignee: RAYTHEON COMPANY
    Inventors: Harry B. Marr, Mark J. Rosker, Justin Hodiak, Charles T. Hansen
  • Patent number: 10341392
    Abstract: Disclosed is a method for controlling a session between devices on a network including a plurality of devices, including: receiving a session control request message from a control device, wherein the session control request message represents a message for operating a session control between a first device and a second device; transmitting a triggering message for a specific control operation to the first device on the basis of the received session control request message; performing the session control between the first device and the second device by using the triggering message; and receiving a triggering response message from the first device, wherein the triggering response message indicates a result of performing the session control.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: July 2, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Jangwoong Park, Minsoo Lee, Younghwan Kwon, Seungryul Yang, Jaekoo Lee, Hyeonjae Lee
  • Patent number: 10333584
    Abstract: A conversion unit configured for downconverting a RF radio signal from a first RF band to a first LF band, and up-converting an electric signal from a second LF band to a second RF band; the LF and RF bands have same bandwidth, while RF bands are centered on central frequencies being higher than the LF central frequencies of the LF bands. The conversion unit selects the copper cable link and the first LF band on which transmitting the downconverted RF signal according to a predetermined criteria between a plurality of RF frequency bands and the copper cable links. Moreover, the conversion unit selects the RF connection and the second RF band on which transmitting the upconverted LF signal according to a predetermined criteria between said plurality of RF connections and a plurality of RF bands.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: June 25, 2019
    Assignee: POLITECNICO DI MILANO
    Inventor: Umberto Spagnolini
  • Patent number: 10327098
    Abstract: A method for using location-based services for service management is discussed. The method includes receiving, at a server, a user request from a user device at a geographical location. The method includes accessing a store search to determine a store reference based on the user request and a user location corresponding to the geographical location, the store reference indicating tenant(s) accessible to the user via a user interface (UI) of the user device. The method includes accessing location data for the user device based on the store reference and a user account associated with the user, the location data indicating a service accessible via the UI and associated with a certain tenant. The method includes providing, to the user device and based on the location data, an user experience for accessing the service via the UI.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: June 18, 2019
    Assignee: PayPal, Inc.
    Inventors: Prashant Jamkhedkar, Anant Ganapathy, Jie Leng, Biju Balakrishnan Nair, Haoyu Xue, Justin Warmkessel
  • Patent number: 10326526
    Abstract: A method for transmitting an orthogonal function processed signal over a communications link on a fiber involves generating at least one mode crosstalk matrix illustrating mode crosstalk between transmitted modes and adjacent modes within the fiber. Adjacent modes to be multiplexed together are selected based on entries within the generated mode crosstalk matrix being less than or equal to a predetermined value. The transmitted modes and the selected adjacent modes are multiplexed together into the orthogonal function processed signal for transmission on the communications link on the fiber.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: June 18, 2019
    Assignee: NXGEN PARTNERS IP, LLC
    Inventor: Solyman Ashrafi
  • Patent number: 10306441
    Abstract: Techniques are described for wireless communication. A method for wireless communication at a wireless device includes transmitting an indication of a capability to operate according to a plurality of modes for communicating with a network on at least one shared channel in a connected mode. The plurality of modes include a narrowband mode and at least one wider band mode. Each wider band mode is based at least in part on a shared channel bandwidth between a narrowband shared channel bandwidth associated with the narrowband mode and a wideband shared channel bandwidth associated with a wideband mode. The method also includes receiving a shared channel assignment associated with operation in the narrowband mode or one of the at least one wider band mode, and communicating on a shared channel, when in the connected mode, in accordance with the received shared channel assignment.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: May 28, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Alberto Rico Alvarino, Wanshi Chen, Hao Xu, Peter Gaal
  • Patent number: 10305619
    Abstract: The present disclosure provides an orthogonal codes based code division multiplexing method of performing the code division multiplexing of demodulation reference signals in multiple layers of resource blocks by using orthogonal matrices, the method comprising: changing the order of chips in particular rows of a first orthogonal matrix to obtain a second orthogonal matrix with the changed order of chips; and multiplying the chips in respective rows of the second orthogonal matrix by the demodulation reference signals in corresponding layers of resource blocks correspondingly in the time direction to obtain code division multiplexing signals. The technical scheme of the present disclosure can improve the power jitter situation of downlink signals on the time, thereby the usage efficiency of the power amplifier at the base station side can be improved.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: May 28, 2019
    Assignee: Sun Patent Trust
    Inventors: Zhi Zhang, Ming Xu, Masayuki Hoshino, Seigo Nakao, Daichi Imamura
  • Patent number: 10284321
    Abstract: There is provided a method for cell search in a communications network. The method is performed by a wireless terminal. The method comprises detecting a level of energy received in a frequency interval to be higher than a threshold value. The method comprises acquiring auxiliary information regarding available cells in the frequency interval based on frequency location and width of the frequency interval. The method comprises performing a cell search in at least a sub-band of the frequency interval using the auxiliary information. There is also presented a wireless terminal configured to perform such a method, a computer program, and a computer program product for such a method.
    Type: Grant
    Filed: January 28, 2015
    Date of Patent: May 7, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Torgny Palenius, Peter Alriksson, Joakim Axmon
  • Patent number: 10251116
    Abstract: A method for automatically detecting cellular mobile channels of a certain cellular mobile standard and their respective center frequencies is described. A spectrum assigned to said cellular mobile standard is received via at least one receiving antenna. Said spectrum received is automatically analyzed by a detection system. A peak detection is performed during said automatic analysis in order to obtain a list of cellular mobile channels and their respective center frequencies for said cellular mobile standard. Further, a detection system is described.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: April 2, 2019
    Assignee: Rohde & Schwarz GMBH & Co. KG
    Inventor: Andreas Spachtholz
  • Patent number: 10230429
    Abstract: An RF system using PR-ASK with orthogonal offset is disclosed. In some embodiments, the system includes a PR-ASK signal generator and an orthogonal offset generator. The PR-ASK signal generator can produce a signal representing a sequence of symbols, for example, RFID symbols. The orthogonal offset generator can shift the PR-ASK signal trajectory away from the origin while maintaining the time domain requirements for an RFID signal, such as waveform edge rise and fall times. In some embodiments stored waveforms incorporating the controlled orthogonal offset are used to synthesize a sequence of symbols. The stored waveforms may also include nonlinear and/or linear predistortion to reduce computational complexity. The waveforms can be represented in Cartesian coordinates for use in a direct conversion transmitter or polar coordinates for use in a polar modulation transmitter. An RFID system can also include a receiver to receive incoming RFID signals.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: March 12, 2019
    Assignee: CLAIRVOYANT TECHNOLOGY LLC
    Inventor: Thomas J. Frederick
  • Patent number: 10218554
    Abstract: An OFDM transmitter and an OFDM receiver respectively transmit and receive N (N?2, N is an integer) control symbols. For each control symbol, a guard interval time-domain signal is, for example, identical to a signal obtained by frequency-shifting at least a portion of a useful symbol time-domain signal by an amount different from any other symbol, or to a signal obtained by frequency-shifting one or both of a portion and a span of a useful symbol interval time-domain signal different from any other symbol by a predetermined amount.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: February 26, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Yoshinobu Matsumura, Tomohiro Kimura, Mikihiro Ouchi
  • Patent number: 10212018
    Abstract: Certain features relate to a telecommunications system with a modular frequency combiner combining multiple received signals at different frequency bands without using frequency-dependent multiplexers. The frequency combiner can include adjustable tuning elements for adjusting various signal-processing parameters of the frequency combiner while the frequency combiner is in the telecommunications system. For example, adjustable tuning elements can adjust the phases of phase shifters of each RF path so that the RF paths are matched for combining the received signals and outputting them through an output port. The adjustable tuning elements can also adjust the electrical length or physical length of the transmission lines that carry the received signals. The adjustable tuning elements can be adjusted manually or automatically while the frequency combiner is deployed in the field in the telecommunications system.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: February 19, 2019
    Assignee: Andrew Wireless Systems GmbH
    Inventors: Thomas Kummetz, Peter Schmid, Alfons Dussmann, Karl-Heinz Fackler, Roman Hofman
  • Patent number: 10201016
    Abstract: Techniques are described for wireless communication. One method includes winning a contention for access to an unlicensed radio frequency spectrum band, transmitting a request message upon winning the contention for access to the unlicensed radio frequency spectrum band, and receiving a response message over the unlicensed radio frequency spectrum band. The request message is transmitted by a user equipment (UE) on an enhanced physical random access channel (ePRACH) or shortened ePRACH (SePRACH), to access a cell that operates in the unlicensed radio frequency spectrum band. The response message is received in response to transmitting the request message, and the request message may be transmitted irrespective of whether a base station has gained access to the unlicensed radio frequency spectrum band.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: February 5, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Onkar Jayant Dabeer, Aleksandar Damnjanovic, Madhavan Srinivasan Vajapeyam, Xiaoxia Zhang, Shimman Arvind Patel, Wanshi Chen, Yongbin Wei
  • Patent number: 10177832
    Abstract: Systems and methods for using spatial multiplexing in conjunction with a coaxial cable deployed in-house. Input streams associated with spatial multiplexing are converted into respective signals occupying different respective frequencies. The signals are transported, via a coaxial cable deployed in-house, into a certain room located in-house, thereby enabling a presence of the plurality of signals in the certain room. The signals are shifted into respective output signals that occupy a single wireless frequency by up-converting each signal from the corresponding different frequency into the single wireless frequency. The output signals are transmitted wirelessly, using only the single wireless frequency, via respective antennas located in the certain room, all said antennas operating in conjunction with the single wireless frequency, thereby achieving spatial multiplexing in the certain room and in conjunction with the coaxial cable.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: January 8, 2019
    Assignee: Cellium Technologies, Ltd.
    Inventors: Roy Kinamon, Gal Zuckerman, Oz Liv
  • Patent number: 10164666
    Abstract: RF front end circuitry includes a first antenna node, a second antenna node, a diplexer, a first band filter, a second band filter, and switching circuitry. The diplexer may be used to separate signals for carrier aggregation, providing signals within a first RF frequency band to the first band filter and signals within a second RF frequency band to the second band filter. Further, by strategically arranging the switching circuitry, the diplexer may also be used as a multiple-input-multiple-output filter, such that additional filters are not required to support one or more MIMO modes of the RF front end circuitry.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: December 25, 2018
    Assignee: Qorvo US, Inc.
    Inventors: Nadim Khlat, Marcus Granger-Jones
  • Patent number: 10153655
    Abstract: The present disclosure relates to a module for relaying power wirelessly to a device implanted in a user. The module may include a structure adapted to be worn by the user, a receiver configured to receive a first wireless power transmission at a first frequency, a transmitter configured to transmit a second wireless power transmission at a second frequency different from the first frequency, and a frequency changer configured to convert energy generated by the first wireless power transmission into energy for generating the second wireless power transmission. Each of the receiver, transmitter and frequency changer may be disposed on or in the structure.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: December 11, 2018
    Assignee: HeartWare, Inc.
    Inventor: John Rudser
  • Patent number: 10149120
    Abstract: A mobile communication system includes a network based aggregation controller for controlling aggregation of component carriers from a first spectrum and a second spectrum. In addition, the mobile communication system includes a group of mobile terminals. The network based aggregation controller is configured to send a group message on at least one component carrier of the first spectrum to the group of mobile terminals. The mobile terminals receive the group message. A terminal based aggregation controller in each of the mobile terminals is configured to control operation of the respective mobile terminal with respect to the at least one component carrier of the second spectrum. This control is accomplished in response to the received group message.
    Type: Grant
    Filed: November 11, 2010
    Date of Patent: December 4, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Joachim Sachs, Robert Baldemair, Tim Irnich, Jonas Kronander
  • Patent number: 10142151
    Abstract: A wireless device generates a High Efficiency (HE) Physical layer Protocol Data Units (PPDU) including a non-High Throughput Signal (L-SIG) field and transmits the HE PPDU. Transmitting the HE PDDU includes transmitting a set of extra tones with the L-SIG field. The set of extra tones include a sequence of values, and first, second, third, and fourth values of the sequence of values respectively correspond to BPSK constellation values of ?1, ?1, ?1, and +1. The set of extra tones may include ?28th, ?27th, 27th, and 28th subcarriers, relative to a center (zero) subcarrier, of a 20 MHz bandwidth of the HE PPDU, and may be used to transmit the first, second, third, and fourth values of the sequence of values, respectively. Another wireless device may receive the HE PPDU, and may use the set of extra tones to estimate a channel.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: November 27, 2018
    Assignee: NEWRACOM, INC.
    Inventors: Dae Won Lee, Yujin Noh, Sungho Moon
  • Patent number: 10129356
    Abstract: Cooperative physical layer caching systems for base stations are described herein. Base stations include cache memories that store portions of content. Base stations receive requests for content files from mobile devices. Cooperative physical layer caching systems can determine contents of the cache memories and can coordinate physical transmissions of the content files based on the contents of the cache memories.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: November 13, 2018
    Assignee: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Vincent Kin Nang Lau, An Liu
  • Patent number: 10122505
    Abstract: A wireless communication system includes a first communication device which arranges a frequency signal into which a single carrier signal is converted by time-to-frequency conversion in subcarriers and wirelessly transmits a resultant signal and a second communication device which receives the signal wirelessly transmitted by the first communication device.
    Type: Grant
    Filed: April 28, 2009
    Date of Patent: November 6, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Kazunari Yokomakura, Yasuhiro Hamaguchi, Shimpei To, Osamu Nakamura
  • Patent number: 10110361
    Abstract: A method of sub-channel feedback in OFDMA systems is provided. A wireless receiving device (STA) receives a radio signal from a transmitting device (AP) over a wide channel in an OFDMA system. The radio signal is transmitted over multiple sub-channels of the wide channel. The STA estimates channel quality information based on the received radio signal for each sub-channel. The STA then sends feedback information to the transmitting device. The feedback information comprises the estimated channel quality information for a selected subset of sub-channels from the wide channel based on a predefined rule. In one embodiment, the feedback information is embedded within an ACK/BA frame or is carried in a frame immediately subsequent to the ACK/BA frame.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: October 23, 2018
    Assignee: MEDIATEK INC.
    Inventors: Tianyu Wu, Jianhan Liu, Kiran Uln, Thomas Edward Pare, Jr.
  • Patent number: 10111236
    Abstract: An aspect of the invention provides a wireless communication apparatus that includes a generator configured to generate modulated signals; a mapping unit configured to map the modulated signals on at least one subcarrier in a frequency domain, the subcarrier being in a first subcarrier group corresponding to one of a plurality of subcarrier groups, wherein frequencies of the subcarrier mapped by the mapping unit is predefined by a pattern with slot, each slot including symbols in a time domain, the predefined pattern of the frequencies of each slot depending on a base station; and a transmitter configured to transmit the modulated signals mapped by the mapping unit.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: October 23, 2018
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Noritaka Deguchi, Jun Mitsugi
  • Patent number: 10103852
    Abstract: Embodiments are provided for implementing efficient uplink (UL) orthogonal frequency division-multiple access (OFDMA) transmission in wireless systems, such as in WiFi networks. An embodiment method includes sending, by an access point (AP) to a plurality of stations (STAs), scheduling information for periodic UL transmission, and sending, to the STAs, a short synchronous signal (SSS) in accordance with the scheduling information for periodic UL transmission. The method further includes receiving, from the STAs, a corresponding UL transmission in response to receiving the SSS. The UL transmission is sent by each of the plurality of the STAs at about a same time. The STAs wait for a time short interframe space (SIFS) after receiving the SSS, before sending, to the AP, the UL transmission.
    Type: Grant
    Filed: January 13, 2015
    Date of Patent: October 16, 2018
    Assignee: Futurewei Technologies, Inc.
    Inventors: Zhigang Rong, Young Hoon Kwon, Yunsong Yang
  • Patent number: 10084633
    Abstract: A system comprises an analog front end (AFE), an analog-to-digital converter (ADC), and alias detection circuitry. The AFE may be operable to receive an analog signal via a communication medium, wherein a first frequency band of the analog signal is occupied by an OFDM symbol and a second frequency band of the analog signal is occupied by first aliases generated during digital-to-analog conversion of the OFDM symbol. The ADC is operable to digitize the particular band of the analog signal to generate a digital signal, wherein, during the digitization, aliasing of the first aliases results in second aliases which fall into the first frequency band. The alias detection circuitry is operable to detect the second aliases in the first frequency band of the digital signal, and process the digital signal based on the detected second aliases to generate an output signal.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: September 25, 2018
    Assignee: Maxlinear, Inc.
    Inventor: Curtis Ling
  • Patent number: 10084563
    Abstract: Waveforms may be shaped in a wireless communications device by processing head tones of a multi-tone carrier using a head tone waveform shaping characteristic to provide a first sub-symbol, processing tail tones of the multi-tone carrier using a tail tone waveform shaping characteristic to provide a second sub-symbol, and processing center tones of the multi-tone carrier using a center tone waveform shaping characteristic to provide a third sub-symbol. The first, second, and third waveform shaping characteristics may be different from each other, i.e., the waveform shaping may be asymmetric. The first, second, and third sub-symbols may be combined to provide an output symbol.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: September 25, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Seyong Park, Muhammad Abdelghaffar, Wei Zeng, Jing Jiang, Joseph Binamira Soriaga, Tingfang Ji
  • Patent number: 10051490
    Abstract: A determination apparatus for determining communication availability in an Orthogonal Frequency Division Multiplexing (OFDM) scheme communication system, the determination apparatus includes a reception unit configured to receive a wireless signal including an OFDM symbol in which a pilot signal is inserted at a constant interval in a frequency axis direction, an obtaining unit configured to obtain a discrete sample signal by sampling the wireless signal, a correlation value calculation unit configured to calculate a correlation value of the discrete sample signal for a time shift amount that is defined in advance according to the constant interval, and a determination unit configured to determine the communication availability in the communication system based on at least a result of determination whether the correlation value for the time shift amount has a peak or not.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: August 14, 2018
    Assignee: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Hidetoshi Kayama
  • Patent number: 10045232
    Abstract: The disclosure provides an electronic device, a method and computer-readable medium. The electronic device includes a circuitry. The circuitry is configured to receive a radio communication signal for another device. The circuitry is also configured to determine, based on the radio communication signal, one or more features that can reflect the difference between uplink transmission mode and downlink transmission mode. The circuitry is further configured to judge whether the radio communication signal is for uplink transmission or downlink transmission according to the feature(s).
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: August 7, 2018
    Assignees: Sony Corporation, Tsinghua University
    Inventors: Yu Rao, Wei Chen, Zhigang Cao, Xin Guo, Ryo Sawai, Ryota Kimura
  • Patent number: 10021538
    Abstract: Methods and apparatuses pertaining to coordination and provision of non-interfering long-range low-power wireless communications may involve facilitating wireless communications among a first set of wireless devices in a first frequency band when operating in a first mode in which there is frequency overlap and no spatial overlap among the first set of wireless devices. Moreover, wireless communications may be facilitated among a second set of wireless devices in a second frequency band different from the first frequency when operating in a second mode in which there is spatial overlap and no frequency overlap among the second set of wireless devices.
    Type: Grant
    Filed: September 25, 2016
    Date of Patent: July 10, 2018
    Assignee: MEDIATEK INC.
    Inventor: Yasantha Rajakarunanayake
  • Patent number: 9992798
    Abstract: A sequence allocating method and apparatus wherein in a system where a plurality of different Zadoff-Chu sequences or GCL sequences are allocated to a single cell, the arithmetic amount and circuit scale of a correlating circuit at a receiving end can be reduced. In ST201, a counter (a) and a number (p) of current sequence allocations are initialized, and in ST202, it is determined whether the number (p) of current sequence allocations is coincident with a number (K) of allocations to one cell. In ST203, it is determined whether the number (K) of allocations to the one cell is odd or even. If K is even, in ST204-ST206, sequence numbers (r=a and r=N?a), which are not currently allocated, are combined and then allocated. If K is odd, in ST207-ST212, for sequences that cannot be paired, one of sequence numbers (r=a and r=N?a), which are not currently allocated, is allocated.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: June 5, 2018
    Assignee: PANASONIC CORPORATION
    Inventors: Daichi Imamura, Takashi Iwai, Kazunori Inogai, Sadaki Futagi, Atsushi Matsumoto
  • Patent number: RE47720
    Abstract: The present invention increases the available spectrum in a wireless network by sharing existing allocated (and in-use) portions of the RF spectrum in a manner that will minimize the probability of interfering with existing legacy users. The invention provides interference temperature-adaptive waveforms, and a variety of physical and media access control protocols for generating waveforms based on measurement and characterization of the local spectrum. The invention measures the local spectrum at a receiving node, generates an optimal waveform profile specifying transmission parameters that will water-fill unused spectrum up to an interference limit without causing harmful interference to primary and legacy transmitters using the same frequency bands, and enables simultaneous transmit and receive modes at a multiplicity of transceivers in a wireless network.
    Type: Grant
    Filed: February 16, 2018
    Date of Patent: November 5, 2019
    Assignee: USTA Technology, LLC
    Inventor: Jerry D. Burchfiel