Plural Separate Transmitters Or Channels Patents (Class 455/103)
  • Patent number: 10939387
    Abstract: Multi-radio wireless network devices are capable of transmitting and/or receiving data from multiple radiofrequency (RF) networks at different bands. Total transmission power limitations may be in place due to, for example, safety reasons. As a result, active management of transmission power may be performed during simultaneous transmission in different bands and/or networks. In some embodiments, the management may take place on group-by-group basis and a network-by-network basis. Antennas may be grouped based on their relative positions and impact on radiation emitted by the devices.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: March 2, 2021
    Assignee: Apple Inc.
    Inventors: Digvijay Arjunrao Jadhav, Indranil S. Sen, Jonathan C. King, Mohit Narang, Prathyusha Sangepu, Qiong Wu, Shrenik Milapchand, Vijay Gadde, Yu Chen
  • Patent number: 10879966
    Abstract: A multiple-input and multiple-output (MIMO) bolt-on device for a single-input and single-output (SISO) radio, a MIMO channel emulator for testing the MIMO bolt-on device, and a MIMO channel emulation method are provided. The MIMO bolt-on device includes: a plurality of antennas, a multi-channel receiver, a plurality of couplers, a micro-controller, and a switch device. The multi-channel receiver includes a plurality of channels for signal transmission. Each coupler is configured to couple the multi-channel receiver with one of the plurality of antennas. The micro-controller is coupled to the multi-channel receiver to compare signals from the plurality of channels, thereby identifying a channel with a highest signal-to-noise (SNR) among the plurality of channels. The switch device is coupled to the micro-controller and configured to select an antenna corresponding to the channel with the highest SNR among the plurality of antennas for a connection between a selected antenna and the SISO radio.
    Type: Grant
    Filed: August 12, 2020
    Date of Patent: December 29, 2020
    Assignee: INTELLIGENT FUSION TECHNOLOGY, INC.
    Inventors: Zhonghai Wang, Lun Li, Jingyang Lu, Genshe Chen, Weifeng Su, Xingping Lin, Xingyu Xiang, Wenhao Xiong
  • Patent number: 10847899
    Abstract: Present invention is an antenna system and a wireless device comprising a negative resistance amplifier, the antenna system further comprises a first antenna element, said first antenna element being adapted to receive an incident wave for generating a first signal proportional to the incident wave, wherein the antenna system comprises a signal generating device for generating a second signal that is essentially 90 degrees phase shifted to the first signal, the first signal and the second signal being adapted to be applied to a hybrid coupler such that the first signal and the second signal are adapted to essentially destructively combine at a first hybrid coupler port, and the first signal and the second signal are adapted to be essentially constructively combined at a second hybrid coupler port, the second hybrid coupler port being adapted to operatively connect to the negative resistance amplifier, and the first hybrid coupler port being adapted to connect to a termination unit.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: November 24, 2020
    Assignee: Norbit ITS
    Inventor: Steffen Kirknes
  • Patent number: 10764091
    Abstract: A method for receiving a signal, includes a useful signal, interfering signals and noise, and for suppressing interfering signals in a multi-channel receiver, comprising steps of: (a) reception, frequency transposition and digital conversion of the received signal; (b) estimation of a correlation matrix of the received signals; (c) estimation of the variance of the noise; (d) initial estimation of the arrival directions of the useful and interfering signals; (e) initialization of the powers of the useful and interfering signals; (f) iterative computation: of the current directional vectors of the useful and interfering signal; of the powers of the useful and interfering signals; of the amplitude/phase errors of assumed directional vectors with respect to the current directional vectors; and of the arrival directions of the useful and interfering signals; (i) suppression of the interfering signals from the signal received in step (a).
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: September 1, 2020
    Assignee: THALES
    Inventor: Roland Baudin
  • Patent number: 10693514
    Abstract: A wireless audio transmission system includes a wireless audio transmitter matched with an audio input device in a plug-in manner, a wireless audio receiver matched with an audio output device in the plug-in manner, the audio output device is provided with a first plug-in hole, the audio input device is provided with a second plug-in hole, the wireless audio receiver includes a signal receiving component and a first plug-in connector-signally connected with the signal receiving component and configured for matching with the first plug-in hole in the plug-in manner, and a first housing connected with the first plug-in connector; the first housing is encircled to form a first accommodation cavity which has an opening and is configured for accommodating the signal receiving component, the first plug-in connector is connected with the opening of the first housing. The present application facilitates a wide application of the wireless audio transmission system.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: June 23, 2020
    Assignee: SHENZHEN FZONE TECHNOLOGY CO., LTD.
    Inventor: Wei Li
  • Patent number: 10681651
    Abstract: Proximity sensors are used in many user devices to detect a user's proximity to it. The proximity detection may be used to control the transmit power of a wireless device to ensure that the transmit power is in the allowed power range as per various regulatory agencies. A method and apparatus are disclosed that enable adaptive Specific Absorption Rate control according to the combination RF transmit power of the multiple modems.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: June 9, 2020
    Assignee: MBIT WIRELESS, INC.
    Inventors: Arumugam Govindswamy, Bhaskar Patel, Sivakumar Govindassamy
  • Patent number: 10660048
    Abstract: Apparatuses, methods, and systems are disclosed for uplink power control. One method includes: receiving a message that configures a set of resources that each includes a downlink resource or an uplink sounding resource and is associated with an uplink transmission beam pattern; receiving scheduling information for an uplink transmission that is associated with a resource of the set of resources; determining an uplink transmission beam pattern associated with the resource; determining a configured maximum output power for the uplink transmission beam pattern that is based on an antenna array property associated with the uplink transmission beam pattern; determining a transmit power for the uplink transmission based on the configured maximum output power; and performing the uplink transmission using the uplink transmission beam pattern based on the transmit power.
    Type: Grant
    Filed: October 2, 2018
    Date of Patent: May 19, 2020
    Assignee: Lenovo (Singapore) PTE LTD
    Inventors: Ebrahim MolavianJazi, Vijay Nangia, Hyejung Jung, Colin D. Frank, Robert T. Love, Ravi Kuchibhotla, Hossein Bagheri
  • Patent number: 10588126
    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: November 6, 2017
    Date of Patent: March 10, 2020
    Assignee: Apple Inc.
    Inventors: Feng Xue, Qinghua Li, Yuan Zhu
  • Patent number: 10484039
    Abstract: A duplexer includes a 90° hybrid connected to an antenna terminal, a 90° hybrid connected to a terminating resistor, a transmission-side filter connected to the 90° hybrid connected to the antenna terminal, and notch filters connected to both of the 90° hybrids and mutually having the same filter characteristics, where each of the notch filters is a band elimination filter configured to reflect a radio frequency signal of a transmission band and allow a radio frequency signal of a band other than the transmission band to pass through.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: November 19, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Shinya Mizoguchi, Masanori Higashide
  • Patent number: 10355738
    Abstract: A multiway switch, a radio frequency system, and a wireless communication device are provided. The multiway switch includes twelve throw (T) ports and four pole (P) ports. The twelve T ports include four first T ports and each first T port is coupled with all of the four P ports. The multiway switch is configured to be coupled with a radio frequency circuit and an antenna system of an electronic device operable in a dual-frequency dual-transmit mode, to enable a preset function of the electronic device, the antenna system includes four antennas corresponding to the four P ports, and the preset function is a function of transmitting a sounding reference signal (SRS) through the four antennas in turn.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: July 16, 2019
    Assignee: Guangdong Oppo Mobile Telecommunications Corp., Ltd.
    Inventor: Jian Bai
  • Patent number: 10348341
    Abstract: Systems and methods for providing indications about the TX RF non-linear impairments are disclosed. In accordance with some implementations, a first device (UE or base station) estimates EVM indications for the signal and determines if the EVM indications is above a threshold. The first device may transmit the estimated TX non-linearity indications math as AM-AM, AM-PM, Volterra coefficients, and/or other performance metrics to a second device, that transmitted the signal, when it is determined that the EVM indications is above the threshold. Systems and methods for wireless communication impairment correction are also disclosed wherein, in accordance with some implementations, a first device receives estimated TX non-linearity indications such as AM-AM, AM-PM, and/or Volterra coefficients from a second device and performs non-linear correction of a transmit signal for the second receiver device based at least in part on the EVM indications.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: July 9, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Haim Mendel Weissman, Igor Gutman, Joseph Patrick Burke, Vijay Chellappa, Sumit Verma, Paul Draxler
  • Patent number: 10305630
    Abstract: An object is to suppress a decrease in communication quality and improve the communication quality even when interference is present in some of a frequency band in use in a case where a turbo coding scheme is combined with multicarrier communication using some of a frequency band shared with another system. A frequency selector (107) selects a band not used by another system, based on a measurement value of a reception level, then selects a subband for systematic-bit mapping from among subbands having a measurement value of the reception level lower than a threshold, and selects a subband for parity-bit mapping from among subbands other than the subband for systematic-bit mapping, for each subband (carrier frequency) of the selected band. A carrier-mapper (110) maps a systematic bit and parity bit to each subband based on the result of selection by the frequency selector (107).
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: May 28, 2019
    Assignee: PANASONIC CORPORATION
    Inventors: Hiroaki Sudo, Mitsuru Uesugi
  • Patent number: 10283848
    Abstract: The object of the present invention is to provide an active antenna system which is flexibly configurable and efficient in operation. According to a first aspect of the present invention an active antenna system comprises a radio equipment having a plurality of transceiver modules, each transceiver module being connected to at least one antenna, and a radio equipment control unit having a hub being connected to the transceiver modules via an antenna interconnect. The hub is embodied for receiving base band signals via the antenna interconnect from the transceiver modules and to extract channel signals from the received base band signals. As the hub is arranged in the radio equipment control unit which is part of a base station the base band signals are transmitted to the radio equipment control unit without extracting the channel signals. This allows easily to distribute the base band signals on several data connections, particularly several antenna cables, of one antenna interconnect.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: May 7, 2019
    Assignee: Global Invest Properties Holding AG
    Inventors: Clemens Rheinfelder, Michael Tauber
  • Patent number: 10212656
    Abstract: A wireless device may include a sensor unit and a wireless unit. The sensor unit may include: an input/output unit that measures or manipulating a state quantity in a process; a first local communication unit that performs local communication to transmit/receive measurement results or manipulation commands for the input/output unit; and a first supply unit that supplies power to the input/output unit and the first local communication unit. The wireless unit may include: a wireless communication unit that transmits/receives the measurement results or the manipulation commands for the input/output unit; a second local communication unit that performs local communication with the first local communication unit to transmit/receive the measurement results or the manipulation commands for the input/output unit; and a second supply unit that supplies power to the wireless communication unit and the second local communication unit.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: February 19, 2019
    Assignee: Yokogawa Electric Corporation
    Inventor: Masato Yamaji
  • Patent number: 10141997
    Abstract: One or more beamsteering matrices are applied to one or more signals to be transmitted via multiple antennas. After the one or more beamsteering matrices are applied to the one or more signals, the plurality of signals is provided to a plurality of power amplifiers coupled to the multiple antennas. Signal energies are determined for the plurality of signals provided to the plurality of power amplifiers, and relative signal energies are determined based on the determined signal energies. Output power levels of the plurality of power amplifiers are adjusted based on the determined relative signal energies.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: November 27, 2018
    Assignee: Marvell World Trade Ltd.
    Inventors: Rohit U. Nabar, Hongyuan Zhang
  • Patent number: 10129820
    Abstract: A device and method for radio-frequency site evaluation is provided. The radio-frequency site comprises one or more radio transmitters in communication with one or more transmit antennas, a monitoring radio receiver in communication with a receive antenna through a variable attenuator, and a controller in communication with the one or more radio transmitters, the monitoring radio receiver and the variable attenuator. The controller identifies the one or more radio transmitters which are currently transmitting, and responsively controls the variable attenuator to an attenuation value where a dynamic range of the monitoring radio receiver has a linear response for total power received at the receive antenna, the attenuation value associated with the one or more radio transmitters that are currently transmitting. Thereafter, the controller controls the monitoring radio receiver to scan at least currently active frequencies of the one or more radio transmitters, for example to detect problems at the site.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: November 13, 2018
    Assignee: MOTOROLA SOLUTIONS, INC.
    Inventors: Arthur Christopher Leyh, Gregory J. Buchwald, Bruce D. Mueller
  • Patent number: 10116342
    Abstract: To control a gain of a transmit signal in a wireless transmitter, the wireless transmitter is provided. The wireless transmitter includes a baseband processor for processing an analog baseband transmit signal, and a Radio Frequency (RF) signal processor including a plurality of mixers. The plurality of mixers are configured to share an output signal of the baseband processor as an input.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: October 30, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hong-Tak Lee, Dae-Hyun Kwon, Sang-Hyun Baek, Xi Yao, Jong-Soo Lee, Young-Taek Lee
  • Patent number: 10039990
    Abstract: The invention relates to a system and a method for remote control of an unmanned electric ground vehicle provided with at least one electric engine and a control unit for at least one engine. The invention also relates to the use of a digital handheld device provided as a remote control unit. According to the invention, a receiver unit is functionally connected to a control unit in said vehicle for receiving commands remotely, as the remote control unit sends command signals to the vehicle. The remote control unit is configurable to store at least one instruction set for a vehicle, each instruction set having at least one command and at least one command parameter. The command parameter indicates a condition to be applied to a command in the instruction set, which will affect the command signal and thus the behavior of the vehicle.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: August 7, 2018
    Assignee: ROVIO ENTERTAINMENT LTD.
    Inventor: Mikael Hed
  • Patent number: 10015749
    Abstract: Techniques for closed loop power control in multi-transmission systems are discussed. One example system employing such techniques can include coupling circuitry configured to receive a transmission path signal comprising a plurality of signal components, wherein the plurality of signal components comprises at least a first signal component in a first frequency band and a second frequency component in a second frequency band distinct from the first frequency band; filter circuitry configured to receive the transmission path signal from the coupling circuitry, to separate the first signal component from the second signal component, and to separately output the first signal component and the second signal component; and power control circuitry configured to receive the first signal component and the second signal component, and to generate a first power control signal based on the first signal component and a second power control signal based on the second signal component.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: July 3, 2018
    Assignee: Intel IP Corporation
    Inventors: Andreas Langer, Thomas Bruder
  • Patent number: 9986401
    Abstract: Systems and methods are disclosed for communicating an emergency alert message from a digital radio broadcast transmission system of a mobile vehicle to a digital radio broadcast receiver system. A digital radio broadcast signal including first and second data is broadcasted using the digital radio broadcast transmission system to end-user digital radio broadcast receivers. The first data includes an emergency code, and the second data includes an emergency alert message. The digital radio broadcast signal is transmitted at a predetermined frequency that is recognized by the receivers as an emergency notification frequency. The digital radio broadcast signal can be decoded only by receivers located within a localized area in a proximity of the transmission system. The receivers are configured to automatically tune to the emergency notification frequency to receive the digital radio broadcast signal and render the second data based on a detection of the emergency code within the signal.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: May 29, 2018
    Assignee: Ibiquity Digital Corporation
    Inventor: Ashruf S. El-Dinary
  • Patent number: 9967081
    Abstract: The present disclosure provides a method for performing beamforming. The method includes initiating a first signal transmitted from a target second device to be received by a first device having an antenna array. A first beamforming weight matrix is generated by the first device that automatically corrects amplitude and phase errors of the antenna array and maximizes antenna gain toward the target second device using a covariance matrix derived from the received first signal. An enhanced second beamforming weight matrix is then generated by the first device using a mask window or a jointly optimized algorithm to further suppress interference to and from other active second devices. The enhancement is computed and applied based on the distribution of multiple active second devices. The antenna array is steered using the second beamforming weight matrix to transmit to and receive from the target second device with an optimized antenna beam pattern.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: May 8, 2018
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Chau-Chin Yang, Ming-Je Yu, Jian-De Wu, Khiem Van Cai
  • Patent number: 9768812
    Abstract: A passive intermodulation detection system is provided to remotely identify passive intermodulation at a base station site and diagnose the type of intermodulation and location of the non-linearity that is the source of the passive intermodulation. The passive intermodulation detection system can generate a test signal in a first band that is transmitted by an antenna. Another antenna can receive a signal in another band, and the passive intermodulation detection system can analyze the received signal to determine whether an intermodulation product due to a non-linearity is present. Based on the type of intermodulation product, period, order, frequency, and etc, the type and location of the non-linearity can be identified and canceled via a passive intermodulation canceling mechanism.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: September 19, 2017
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Ernest Tsui, Paul Maxwell, Vibhav Kapnadak
  • Patent number: 9756544
    Abstract: A user device selects a communication module from a plurality of communication modules of the user device to communicate first data to a first device in a first configuration, selects a first antenna from a plurality of antennas of the user device to communicate the first data in the first configuration, and couples the communication module to the first antenna in the first configuration. The user device additionally selects the communication module to communicate second data to a second device in a second configuration, selects the first antenna and a second antenna from the plurality of antennas to communicate the second data in the second configuration, and couples the communication module to the first antenna and the second antenna in the second configuration.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: September 5, 2017
    Assignee: Amazon Technologies, Inc.
    Inventors: Peruvemba Ranganathan Sai Ananthanarayanan, Chun Kit Lai, Adrian Napoles, Namhoon Kim, Eswarappa Channabasappa, Ulf Jan Ove Mattsson, Anuj Dron, Daejoung Kim, Rohit Sammeta
  • Patent number: 9749894
    Abstract: A system, method, and computer program product are provided for performing mobile network related tasks based on performance data acquired by an unmanned vehicle. In use, mobile device performance data associated with a geographical area is received, the mobile device performance data being acquired by one or more unmanned vehicles accessing the geographical area. Additionally, the received mobile device performance data associated with the geographical area is analyzed. Further, one or more mobile network related tasks corresponding to the geographical area are performed based on the analysis of the received mobile device performance data associated with the geographical area.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: August 29, 2017
    Assignee: Amdocs Development Limited
    Inventors: Meir Levy, Yaron Kadmon, Dori Ben-Moshe, Nadav Kremer, Baruch Pinto
  • Patent number: 9736772
    Abstract: A method and apparatus for controlling power of a Base Station (BS) in a wireless communication system are provided, in which a voltage comparator compares an operation voltage of a power control target of the BS with a minimum required voltage for the power control target, and a controller decreases the operation voltage of the power control target by a predefined level, if the operation voltage is higher than the minimum required voltage, and increases the operation voltage of the power control target by a predefined level, if the operation voltage is lower than the minimum required voltage.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: August 15, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Suk-Kyun Hur
  • Patent number: 9680753
    Abstract: This disclosure includes systems and methods for wireless communication using asymmetric transmit and receive chains. A device having a greater number of receive chains may be optimized for data reception and a device having a greater number of transmit chains may be optimized for data transmission. The relative ratio in performance between desired uplink and downlink performance may be adjusted accordingly. In one aspect, one wireless protocol may be used for communications to maintain a unidirectional link on another.
    Type: Grant
    Filed: January 7, 2014
    Date of Patent: June 13, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Yoseph Yitzhak Malkin, Sudheep Karan Reddy Thota
  • Patent number: 9642166
    Abstract: An apparatus includes a first amplifier circuit and a second amplifier circuit. The first amplifier circuit has a first output coupled to a first load circuit in a multi-output mode, and the second amplifier circuit has a second output coupled to a second load circuit in the multi-output mode. The apparatus further includes a first divert circuit and a second divert circuit. The first divert circuit is configured to divert a first portion of a first amplified signal from the first amplifier circuit to the second load circuit in the multi-output mode. The second divert circuit is configured to divert a first portion of a second amplified signal from the second amplifier circuit to the first load circuit in the multi-output mode.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: May 2, 2017
    Assignee: Qualcomm Incorporated
    Inventors: Sang Hyun Woo, Wingching Vincent Leung, Li-Chung Chang
  • Patent number: 9628138
    Abstract: A processor is configured to control a first communication module and a second communication module by executing a control program stored in a memory module such that communication at a first frequency included in a first frequency band or a second frequency included in a second frequency band is carried out using the first communication module, and such that communication at a third frequency included in a third frequency band is carried out using the second communication module. The first communication module includes an adjustment module. The adjustment module is configured to reduce interference between the first antenna and the second antenna when the communication at the third frequency is carried out.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: April 18, 2017
    Assignee: KYOCERA CORPORATION
    Inventor: Hironori Miyazaki
  • Patent number: 9590792
    Abstract: The present disclosure describes systems and techniques relating to wireless communications by devices that employ more than one wireless communication technology. According to an aspect of the described systems and techniques, a device includes: a first radio configured to communicate wirelessly with a first station in accordance with a first wireless communication technology, a second radio configured to communicate wirelessly with a second station in accordance with a second wireless communication technology, a controller configured to (i) terminate scheduled portions of time for sending communications from the first radio to the first station in favor of receiving communications from the second station to the second radio and (ii) restrict which of all available scheduled portions of time for sending communications from the first radio to the first station are provided for termination based on information about types of data transmitted in respective ones of the available scheduled portions of time.
    Type: Grant
    Filed: April 1, 2014
    Date of Patent: March 7, 2017
    Assignee: Marvell World Trade Ltd.
    Inventors: Yi-Ling Chao, Qing Zhao, Leilei Song, Hui-Ling Lou, Yakun Sun
  • Patent number: 9560601
    Abstract: Systems and method for improving design and/or operation of a radio frequency system are provided. One embodiment provides a radio frequency system, which includes a first look-up table that describes a static reference value, association between a maximum output power and a first specification level, and association between a first back off value and a second specification level, in which the first back off value is defined in relation to the static reference value and used to determine a first reduced output power; and a second look-up table that describes association between the maximum output power and a first set of operational parameters and association between the first reduced output power and a second set of operational parameters.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: January 31, 2017
    Assignee: Apple Inc.
    Inventors: Jianjian Li, Vikas O. Jain, Peter M. Agboh, Kaushal K. Mangtani, Manjit S. Walia, Mohit Narang, Abhishek Mehta, Ruben Caballero
  • Patent number: 9531413
    Abstract: In an embodiment, an apparatus includes a first radio frequency (RF) signal path and a second RF signal path. The first RF signal path can provide a first RF signal when active and the second RF signal path can provide a second RF signal when active. The second RF signal path can include a select switch having an input shunt arm electrically coupled to an input of the select switch. The input shunt arm can be arranged such that it is on when the first RF signal path is active and/or when the second RF signal path is inactive.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: December 27, 2016
    Assignee: Skyworks Solutions, Inc.
    Inventors: Weimin Sun, David Viveiros, Jr., Russ Alan Reisner
  • Patent number: 9503913
    Abstract: In one embodiment, a cellular wireless communications network, such as a large-scale antenna system (LSAS) network, having multiple base stations is logically divided into overlapping, virtual, truncated networks, where each base station functions as the master of a different truncated network, and each truncated network also has one or more base stations that function as slaves to that master base station. Each master base station generates estimated slow-fading coefficients and a slow-fading post-coding (SFP) vector based only on the wireless units current located within its truncated network. In particular, to generate the SFP vector, the master collects estimated slow-fading coefficients and estimated uplink data symbols from its slaves. The master uses the SFP vector to update its own estimated uplink data symbols for the wireless units currently located within its own cell.
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: November 22, 2016
    Assignee: Alcatel Lucent
    Inventors: Alexei Ashikhmin, Thomas L. Marzetta
  • Patent number: 9456361
    Abstract: A system, method, and computer program product are provided for performing mobile network related tasks based on performance data acquired by an unmanned vehicle. In use, mobile device performance data associated with a geographical area is received, the mobile device performance data being acquired by one or more unmanned vehicles accessing the geographical area. Additionally, the received mobile device performance data associated with the geographical area is analyzed. Further, one or more mobile network related tasks corresponding to the geographical area are performed based on the analysis of the received mobile device performance data associated with the geographical area.
    Type: Grant
    Filed: January 7, 2015
    Date of Patent: September 27, 2016
    Assignee: Amdocs Software Systems Limited
    Inventors: Meir Levy, Yaron Kadmon, Dori Ben-Moshe, Nadav Kremer, Baruch Pinto
  • Patent number: 9420592
    Abstract: Disclosed is a method of avoiding channel interference by a sensor node including a multi transmission and reception unit in a wireless sensor network. The method includes setting channel A in channel group A for a first wireless transmission and reception unit, and setting channel B in channel group B for a second wireless transmission and reception unit, checking interference for the channel A, detecting interference for the channel B if interference is detected in the channel A, and performing communication through a channel where interference has not been detected among the channel A and the channel B.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: August 16, 2016
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Byeong Cheol Choi, Jae Hong Ruy
  • Patent number: 9413444
    Abstract: A radio frequency (RF) processing circuit used in a wireless communication device for processing a plurality of wireless signals is disclosed. The RF processing circuit comprises an RF front-end circuit and a control unit. The RF front-end circuit is coupled to a plurality of antennas and a plurality of communication modules and is used for switching connections between the plurality of antennas and the plurality of communication modules according to a control signal. The control unit is coupled to the RF front-end circuit and is used for generating the control signal according to a frequency band and operation conditions of each communication module. The RF front-end circuit further comprises a switch module and a frequency multiplexing module.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: August 9, 2016
    Assignee: MEDIATEK INC.
    Inventors: Cheng-Hao Kuo, Shao-Chin Lo
  • Patent number: 9380541
    Abstract: Embodiments described herein provide a method and apparatus for determining a maximum transmitter power for a mobile device. First, a maximum specific absorption rate (SAR) value is determined. Then, a maximum transmitter power based on the maximum SAR value is determined. The maximum SAR value may be determined using any or all of the following methods: using a composite worst-case SAR map, determining a usage position of the mobile device, and a running average of transmitter power. A further embodiment provides an apparatus for managing transmitter power. The apparatus includes a modem that is in communication with a transmitter; a processor in communication with the modem; and a memory in communication with the processor.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: June 28, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Lin Lu, Jagadish Nadakuduti, Paul Guckian
  • Patent number: 9331836
    Abstract: The present disclosure relates to de-multiplexing at least one RF input signal feeding RF power amplifier circuitry to create multiple de-multiplexed RF output signals, which may be used to provide RF transmit signals in an RF communications system. Output transformer circuitry is coupled to outputs from the RF power amplifier circuitry to provide the de-multiplexed RF output signals, which may support multiple modes, multiple frequency bands, or both. The de-multiplexed RF output signals may be used in place of RF switching elements in certain embodiments. As a result, RF front-end switching circuitry in the RF communications system may be simplified, thereby reducing insertion losses, reducing costs, reducing size, or any combination thereof. Additionally, the output transformer circuitry may provide load line transformation, output transistor biasing, or both to the RF power amplifier circuitry.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: May 3, 2016
    Assignee: RF Micro Devices, Inc.
    Inventors: Nadim Khlat, Ruediger Bauder, Andrew F. Folkmann
  • Patent number: 9306702
    Abstract: The present invention is related to a method and apparatus for implementing space frequency block coding (SFBC) in an orthogonal frequency division multiplexing (OFDM) wireless communication system. The present invention is applicable to both a closed loop mode and an open loop mode. In the closed loop mode, power loading and eigen-beamforming are performed based on channel state information (CSI). A channel coded data stream is multiplexed into two or more data streams. Power loading is performed based on the CSI on each of the multiplexed data streams. SFBC encoding is performed on the data streams for each of the paired subcarriers. Then, eigen-beamforming is performed based on the CSI to distribute eigenbeams to multiple transmit antennas. The power loading may be performed on two or more SFBC encoding blocks or on each eigenmodes. Additionally, the power loading may be performed across subcarriers or subcarrier groups for weak eigenmodes.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: April 5, 2016
    Assignee: INTERDIGITAL TECHNOLOGY CORPORATION
    Inventors: Jaeyoung Kwak, Robert L. Olesen, Aykut Bultan, Eldad M. Zeira, Changsoo Koo, Fatih M. Ozluturk, Yuejin Huang, Kalpendu R. Pasad
  • Patent number: 9288634
    Abstract: Technologies and implementations for determining the location of a device in an indoor environment are generally disclosed.
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: March 15, 2016
    Assignee: Empire Technology Development LLC
    Inventor: Arvind Vijay Keerthi
  • Patent number: 9281879
    Abstract: Systems and methods for controlling power spectral density (PSD) of a multiple-input-multiple-output (MIMO) transmitter are provided. Data corresponding to multiple transmission streams of the MIMO transmitter is received with precoding circuitry from a constellation encoder. The received data is precoded using the precoding circuitry. The precoded data is sent to a plurality of transmission ports of the MIMO transmitter. Power allocation of the precoded data is adjusted for a first of the plurality of transmission ports independently of adjusting power allocation of the precoded data for a second of the plurality of transmission ports.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: March 8, 2016
    Assignee: Marvell International Ltd.
    Inventors: Carlos Camps, Salvador Iranzo Molinero
  • Patent number: 9246436
    Abstract: A method and device for receiving a wireless signal is provided. The device includes a passive mixer having a first input node, a second input node, and at least one output node. An oscillator is coupled to the first input node of the mixer. The output of a buffer is coupled to the second input node of the mixer. An antenna is operatively coupled to the input node of the buffer. The buffer is configured to provide isolation from the mixer.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: January 26, 2016
    Assignee: LINEAR TECHNOLOGY CORPORATION
    Inventors: Mark Alan Lemkin, Thor Nelson Juneau
  • Patent number: 9246524
    Abstract: An Outdoor Coupler Unit (OCU) is described to combine or split, transmit and receive microwave signals from multiple Outdoor Units (ODUs). The OCU has low signal loss by utilizing circulators. The OCU concept allows for system expansion beyond two ODUs if desired, and can be placed outdoors in close proximity to an antenna or antennas.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: January 26, 2016
    Assignee: ZTE (USA) INC.
    Inventors: Edwin Nealis, Ying Shen
  • Patent number: 9231682
    Abstract: System and method for calculating a transmitter beamforming vector related to a channel vector h under per-antenna power constraints combined with total power constraint, under per-antenna power constraints combined with overall line of site (LOS) effective isotropic radiated power (EIRP) and under all three constraints. Calculating a transmitter beamforming vector may be done in the transmitter, in the receiver and feedback to the transmitter or in both. The method may be adapted to perform with a multi-antenna receiver and with multi-carrier systems.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: January 5, 2016
    Assignee: Celeno Communications Ltd.
    Inventors: Yaron Shany, Nir Shapira
  • Patent number: 9225571
    Abstract: A method for transmitting a preamble for legacy support is provided. In a communication system for supporting at least one of a first system corresponding to a legacy system and a second system which corresponds to an evolved system and supports two or more scalable bandwidths, a method for transmitting a preamble for the second system is provided. A preamble sequence is generated on the basis of a smallest bandwidth of the two or more scalable bandwidths, the generated preamble sequence is mapped to a resource zone to have a repetition factor which is relatively prime to a repetition factor of a repetition factor of a preamble for the first system, and the preamble sequence mapped to the resource zone is transmitted as the preamble for the second system.
    Type: Grant
    Filed: February 2, 2009
    Date of Patent: December 29, 2015
    Assignee: LG Electronics Inc.
    Inventors: Seung Hee Han, Yeong Hyeon Kwon, Jin Sam Kwak, Dong Cheol Kim, Sung Ho Moon, Min Seok Noh, Hyun Woo Lee
  • Patent number: 9197381
    Abstract: Various configurations and arrangements of systems and methods for providing multi-carrier aggregation are described. A system in accordance with the disclosure can include a first mixer configured to receive a first signal in a first frequency band, a second mixer configured to receive a second signal in a second frequency band, a third mixer configured to receive the second signal in the second frequency band, and a fourth mixer configured to receive a third signal in a third frequency band. The system can further include a controller configured to selectively activate one of the first mixer and the second mixer, and selectively activate one of the third mixer and the fourth mixer.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: November 24, 2015
    Assignee: Broadcom Corporation
    Inventors: Masoud Kahrizi, Bernd Pregardier, John Cumming Leete
  • Patent number: 9191900
    Abstract: Mobile devices and power control methods thereof are provided. The power control method, performed by a mobile device, includes: receiving internal information from a memory device; determining an output power range of an amplifier according to the internal information; determining a an amplifier gain switch range of the amplifier based on the output power range, when a transmit power of an uplink signal is within the amplifier gain switch range, amplifying the uplink signal with a first gain mode; and when the transmit power of the uplink signal is outside of the amplifier gain switch range, amplifying the uplink signal with a second gain mode.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: November 17, 2015
    Assignee: Wistron Corp.
    Inventor: Sheng-Lun Chiou
  • Patent number: 9137798
    Abstract: A wireless transmission device is provisioned with a communication parameter setting unit configured to group time domain signals and setting different communication parameters for each group, a clipping unit configured to perform a clipping processing in the frequency domain on at least a portion of groups of the time domain signal, and a transmitting unit configured to transmit the time domain signal after the clipping processing.
    Type: Grant
    Filed: November 24, 2011
    Date of Patent: September 15, 2015
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hiroki Takahashi, Yasuhiro Hamaguchi, Kazunari Yokomakura, Osamu Nakamura, Jungo Goto
  • Patent number: 9130608
    Abstract: A radio transmission system includes: a first electronic device; and a second electronic device having a mounting structure mounted with the first electronic device, wherein a millimeter wave signal transmission line capable of transmitting information in a millimeter wave band is formed between the first electronic device and the second electronic device when the first electronic device is mounted in the mounting structure of the second electronic device, and between the first electronic device and the second electronic device, a transmission object signal is converted into a millimeter wave signal and then the millimeter wave signal is transmitted via the millimeter wave signal transmission line.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: September 8, 2015
    Assignee: SONY CORPORATION
    Inventor: Hirofumi Kawamura
  • Patent number: 9094817
    Abstract: An authentication server and corresponding method to authenticate a location of a mobile device at a location system are disclosed. The authentication server includes a data transfer controller to initiate data transfer between the mobile device and the authentication server in response to an indication of communicative coupling of the mobile device to a network via a small cell associated with the location system. The authentication server also includes a network activity monitor to access a location server associated with the location system in response to the indication of the communicative coupling and to monitor an indication of network activity associated with the small cell provided by the location server to authenticate the location of the mobile device at the location system.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: July 28, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: John T. Brassil, Pratyusa Kumar Manadhata
  • Patent number: RE47978
    Abstract: A communication device and a power control method thereof are provided. The power control method, performed by a communication device, includes: determining a power range of a transmit power of an uplink signal; determining a gain switch range based on the power range; when the transmit power of the uplink signal is within the gain switch range, determining a first gain mode for amplifying the uplink signal; and when the transmit power of the uplink signal is out of the gain switch range, determining a second gain mode for amplifying the uplink signal.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: May 5, 2020
    Assignee: WISTRON CORP.
    Inventors: Sheng-Lun Chiou, Wen-Chieh Wu