Noise, Distortion, Or Unwanted Signal Detection (e.g., Quality Control, Etc.) Patents (Class 455/67.13)
  • Patent number: 9008585
    Abstract: Measurements and Channel State Information (CSI) feedback are configured using communications between a network and user equipment (UE). The communications includes a first signaling from a network component to the UE indicating one or more reference signal (RS) resource configurations, a second signaling indicating one or more interference measurement (IM) resource configurations, and a third signaling indicating a CSI report configuration, wherein the CSI report configuration indicates a subset of the one or more RS resource configurations and a subset of the one or more IM resource configurations. The UE establishes a RS based measurement according to the subset of the one or more RS resource configurations and an IM according to the subset of the one or more IM resource configurations. The UE then generates and sends to the network a CSI report in accordance with the CSI report configuration and using the RS based measurement and the IM.
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: April 14, 2015
    Assignee: Futurewei Technologies, Inc.
    Inventors: Weimin Xiao, Jialing Liu, Bingyu Qu
  • Patent number: 9008054
    Abstract: A resource management unit for a mobile telephone terminal, with the terminal comprising radio transmission/reception means for transmitting and receiving radio frequency signals corresponding to bursts of symbols during allocated time slots, and a device able to operate in a first mode and in a second mode, said device interfering less with the transmission/reception of radio frequency signals when it is in the first mode than when it is in the second mode. The resource management unit is able to cause the device to change from one of the first and second modes to the other of the first and second modes during the same time slot.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: April 14, 2015
    Assignee: Ericsson Modems SA
    Inventors: Samuel Rousselin, Yann Le Gal
  • Patent number: 9008726
    Abstract: To enable a mobile station, when a base station carries out a measurement of a radio signal coming from an adjacent cell while suspending at least one of radio transmission to and radio reception from the mobile station when a base station's own cell is in operation, to recognize that the adjacent cell is being measured. A home base station 1 carries out a measurement of a radio signal coming from an adjacent cell while suspending at least one of radio transmission to and radio reception from a mobile station 3-1 when a base station's own cell (home cell) is in operation. Further, the home base station 1 notifies, prior to beginning the measurement, advance notice information indicating an execution of the measurement to the mobile station 3-1.
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: April 14, 2015
    Assignee: NEC Corporation
    Inventors: Hiroaki Aminaka, Vivek Sharma
  • Patent number: 9008706
    Abstract: The present invention discloses a method and an apparatus for implementing network cognition. The method includes: determining a type of a received network task; according to the type of the received network task, selecting at least one cognitive capability identifier corresponding to the type of the network task; using network devices with the at least one cognitive capability identifier as alternative network devices; determining an alternative network device that is among the alternative network devices and has a cognitive capability that meets a condition for performing the network task is a target network device; and controlling the target network device to perform the network task.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: April 14, 2015
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Jie Chen, You Li, Lei Gong
  • Patent number: 9002387
    Abstract: Methods and arrangements in a telecommunication network for intercell interference coordination. The telecommunication network comprises a first base station, acting as serving base station for a mobile station, and a second base station. The method comprises determining that transmission interference to the mobile station is to be limited. The method also comprises triggering the mobile station to send a signal on a radio resource, which signal is to be received by the second base station, enabling the second base station to select a transmission parameter that limits interference for the mobile station.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: April 7, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: David Astely, Anders Furuskär, Stefan Parkvall
  • Patent number: 9002289
    Abstract: [Problem] To provide a wireless communication apparatus, a wireless communication system, an interference causing control method, a storage medium, and a control apparatus which can carry out appropriate interference causing control to a secondary system adaptively to an actual environment with no change in a configuration of a primary system. [Means to solve the problem] A wireless communication apparatus, which belongs to a wireless communication system, measures a wireless signal which causes interference to another system and which another wireless communication apparatus belonging to the wireless communication system transmits.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: April 7, 2015
    Assignee: NEC Corporation
    Inventors: Kazushi Muraoka, Hiroto Sugahara, Masayuki Ariyoshi
  • Patent number: 9002366
    Abstract: A wireless communication apparatus compatible with a plurality of communication schemes includes a first communicator that performs a communication in a first communication scheme, a second communicator that performs a communication in a second communication scheme, a signal generator that generates a signal for commanding startup of a communicator of the wireless communication terminal which performs a communication in the second communication scheme when the reception quality in the first communication scheme is equal to or higher than a threshold value, provided that the first communicator is in a state of communicable with the wireless communication terminal and that the communicator of the wireless communication terminal is not started, and a threshold value setting section that sets the threshold value based on information indicating the reception qualities in the first and second communication schemes.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: April 7, 2015
    Assignee: Panasonic Corporation
    Inventor: Noriaki Saito
  • Patent number: 9002281
    Abstract: An apparatus and method of allowing user equipment to transmit information directly with other user equipment, using a device-to-device mode is disclosed herein. A device-to-device blank subregion is defined where device-to-device information can be transmitted without interference from other user equipment. The device-to-device blank subregion may be set up such that it is only used in an exclusive mode if a device-to-device cluster is considered highly interfering. A device may join a device-to-device network through the use of a beacon transmission interval, a control transmission interval, and a data transmission interval.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: April 7, 2015
    Assignee: Intel Corporation
    Inventors: Jong-Kae Fwu, Alexey Khoryaev, Mikhail Shilov, Apostolos Papathanassiou
  • Patent number: 9000971
    Abstract: Potential radar pulses are detected in a received signal waveform at a terminal of a broadband radio communication system, and a reception time is ascertained for each of the potential radar pulses. A pair of pulses is selected having respective reception times separated by an allowed pulse repetition intervals. One or more further pulses is selected that is related to the selected pair by having a respective reception time separated from the respective reception time of at least one pulse of the pair of pulses by one or more pulse repetition intervals from the set of pulse repetition intervals.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: April 7, 2015
    Assignee: Cambium Networks Limited
    Inventors: Martin Richard Crowle, Nigel Jonathan Richard King, Mark Howard Williams
  • Patent number: 8995920
    Abstract: A wireless communication apparatus includes: a channel information acquiring unit that, acquires a transmitted signal channel matrix that is channel information as a transmitted signal of a pre-interference-removal transmitted signal group and an interference signal channel matrix that is channel information as an interference signal of the non-interference-removed transmitted signal group; an interference signal calculating unit that generates an interference signal group at the time of reception by the non-interference-removed transmitted signal group with respect to the pre-interference-removal transmitted signal group, based on the pre-interference-removal transmitted signal group, the non-interference-removed transmitted signal group, the transmitted signal channel matrix, and the interference signal channel matrix; a subtracting unit that subtracts the interference signal group from the pre-interference-removal transmitted signal group to generate a post-interference-removal transmitted signal group; an
    Type: Grant
    Filed: May 26, 2010
    Date of Patent: March 31, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kozue Hirata, Takashi Onodera, Hiroshi Nakano, Minoru Kubota, Naoki Okamoto
  • Patent number: 8995918
    Abstract: A broadband device (105) can detect a proximate narrowband transmission (152) from a narrowband communication device (145). The narrowband transmission (152) can be in close enough proximity (155) to at least one bearer channel of the broadband device (105) to result in interference on the narrowband reception (152) when the broadband device (105) is transmitting and the narrowband communication device (145) is concurrently receiving. Responsive to the detecting, the broadband device (105) can gate a broadband transmission (142) to ensure the broadband transmission (142) does not interfere with the proximate narrowband reception (152). In absence of detecting the narrowband transmission (152), the broadband transmission (142) from the broadband device (105) would not be gated.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: March 31, 2015
    Assignee: Motorola Solutions, Inc.
    Inventors: Gino A. Scribano, Michael H. Baker, Xiaowei Jin
  • Patent number: 8996050
    Abstract: A system and method for observing a radio wave in an interplanetary space are provided. The system may include a tile unit to observe a Radio Frequency (RF) signal generated from a cosmic radio source in the interplanetary space, and to generate observation data, a node unit to digitalize the generated observation data, and to store the digitalized observation data, and a data analyzing unit to analyze the digitalized observation data and to compute a characteristic of a solar wind.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: March 31, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventor: Cheol Oh Jeong
  • Patent number: 8995919
    Abstract: In at least one embodiment, a method includes receiving a first transmission from a device, the first transmission transmitted at a first frequency. In response to receiving the first transmission, a transceiver is disabled and a second transmission is transmitted to the device, the second transmission transmitted at a second frequency. The method further includes receiving a third transmission from the device, the third transmission transmitted at the second frequency.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: March 31, 2015
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Randy Zimler, George B. Bolam, James A. Worsham, Jr.
  • Publication number: 20150087241
    Abstract: A vehicle system for detecting a jamming signal may include a receiver configured to receive a signal, the signal having signal properties. A controller may be in communication with the receiver configured to determine a jamming event probability based at least in part on the signal properties.
    Type: Application
    Filed: September 26, 2013
    Publication date: March 26, 2015
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventor: John Robert Van Wiemeersch
  • Patent number: 8989811
    Abstract: A wireless communication apparatus includes a first module, a second module, an inhibit module, a calculation module, and a control module. The first module constitutes a first system. The first system transmits and receives first data to and from a first device. The second module constitutes a second system. The second system transmits and receives second data to and from a second device in each interval time-divided with determined transmission timing. The inhibit module generates inhibit periods for preventing the first module from communicating by use of the first data. The calculation module calculates an occupation time required for the transmission and reception of the first data. The control module compares the period between the inhibit periods adjacent to one another with the occupation time and, according to the comparison result, instructs the first device to stop or delay the transmission of the first data.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: March 24, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masahiro Sekiya, Daisuke Taki
  • Patent number: 8989244
    Abstract: A receiver is provided that receives signals from a device under test (DUT) for one or more modes of operation. For each mode, the system detects beacon transmission signals from the DUT, and counts the number of beacons for a period of time. If the count is not consistent with an expected count, e.g. a stored value, the system may preferably provide an output to indicate that there is a problem with the DUT. If the count is consistent with the expected count, the system may preferably perform further testing for other modes of operation. If the count output of the DUT is consistent with expected counts over each of the operation modes, the system may provide an indication that the DUT has passed the beacon tests.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: March 24, 2015
    Assignee: NETGEAR, Inc.
    Inventors: Joseph Amalan Arul Emmanuel, Jonathan M. Hummel, Shahrokh M. Zardoshti
  • Patent number: 8989815
    Abstract: Noise suppression systems and methods suppress far field noise in a microphone signal. A telephony system includes a main microphone and a reference microphone. In one example, the main microphone and the reference microphone can be located in the same device. In another example, the main microphone and the reference microphone can be located in two separate devices. A DSP can use the reference microphone signal to carry out suppression of far field noise in the main microphone signal. In one approach the DSP can determine an estimate of far field noise in the main microphone signal based on a noise estimate of the reference microphone signal and a reference and main microphone coupling estimate, and then subtract the far field noise estimate from the main microphone signal. Alternatively, the DSP can suppress the main microphone signal if it determines that a local talker is inactive.
    Type: Grant
    Filed: November 24, 2012
    Date of Patent: March 24, 2015
    Assignee: Polycom, Inc.
    Inventors: Kwan K. Truong, Peter Chu, Steve Potts, Erwin Goesnar
  • Patent number: 8989753
    Abstract: A method for allocating a transmission signal to a transmission channel which has a transmission bandwidth and a rated center frequency and which is established between a radio transmitter and a radio receiver has the steps: emitting the transmission signal on the radio transmitter end with an actual transmitter frequency; receiving the transmission signal in the radio receiver; determining the frequency of the transmission signal in the radio receiver; and deciding on the allocation of the transmission signal to a transmission channel if the frequency determined by the radio receiver lies in a predetermined frequency range.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: March 24, 2015
    Assignee: Continental Automotive GmbH
    Inventors: Markus Aunkofer, Thomas Georgi, Christian Kursawe, Martin Opitz, Thomas Reisinger
  • Patent number: 8989793
    Abstract: A reverse power control method includes: a base station presetting reverse outer loop threshold values according to radio configuration (RC) types; in the accessing process of a terminal, the base station selecting the preset reverse outer loop threshold value according to the RC type fed back by the terminal; the base station receiving the Eb/Nt of the reverse channel and comparing the received Eb/Nt with the selected reverse outer loop threshold value, if the Eb/Nt is larger than the reverse outer loop threshold value, the base station instructing the terminal to decrease the transmitting power; if the Eb/Nt is smaller than the reverse outer loop threshold value, the base station instructing the terminal to increase the transmitting power, so as to guarantee that the terminal accesses successfully. An apparatus for implementing reverse close loop power control and an apparatus for implementing reverse outer loop power control are also provided.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: March 24, 2015
    Assignee: ZTE Corporation
    Inventor: Longcheng Liang
  • Patent number: 8983487
    Abstract: The present invention relates to an adaptive transmitting device using limited feedback information in a mobile communication system, and a method thereof. According to an exemplary embodiment of the present invention, when the base station transmits a pilot signal to the terminal, the terminal generates channel information by using the pilot signal, generates additional channel information from the channel information, and transmits the channel information and the additional channel information to the base station. The base station determines band allocation, power allocation, and modulation methods for each use by using received feedback information, and transmits modulated traffic data to the terminal according to the determined methods.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: March 17, 2015
    Assignees: Electronics and Telecommunications Research Institute, Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Young-Jo Ko, Jae-Young Ahn, Kwang-Soon Kim, Jung-Hyoung Kwon, Keum-Chan Whang
  • Patent number: 8983389
    Abstract: Certain aspects of the present disclosure propose methods and apparatuses for detecting whether a user device is scheduled for a single user (SU) multiple-input multiple-output (MIMO) communication mode or for a multi-user (MU) MIMO communication mode. In an aspect, a method for wireless communications is provided which includes measuring, at a first apparatus based on received pilot signals, a first receive power corresponding to a first channel associated with the first apparatus, measuring, based on the received pilot signals, a second receive power corresponding to a second channel associated with at least one potentially present second apparatus, measuring a residual interference based on the received pilot signals, and determining, based on at least one of the first receive power, the second receive power and the residual interference, whether to apply a MU detection or a SU detection for estimating data received at the first apparatus.
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: March 17, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Kapil Bhattad, Peter Gaal, Alexei Yurievitch Gorokhov, Juan Montojo, Naga Bhushan
  • Patent number: 8976691
    Abstract: A first communication device comprising memory in which data is stored may receive a request packet from a second communication device, measure received signal strength for the request packet, and determine whether to perform the requested search of the data stored in the memory based on the received signal strength and the power at which the request packet was transmitted. The search request packet may comprise a request to search the data stored in the memory, and a transmit power field that indicates a power at which the request packet was transmitted. The determining may be based on a result of a comparison between the received signal strength and a threshold and/or based on a comparison of a relative power and a threshold. The relative power may be calculated utilizing the received signal strength and the power at which the packet was transmitted.
    Type: Grant
    Filed: October 6, 2011
    Date of Patent: March 10, 2015
    Assignee: Blackbird Technology Holdings, Inc.
    Inventor: John Peter Norair
  • Patent number: 8977307
    Abstract: Technology for spatial domain beamforming coordination at a low power node (LPN) in a heterogeneous network (HetNet) is disclosed. One method can include the LPN collecting spatial feedback information of macro node interference from a plurality of wireless devices in a LPN cell. The LPN can compile the spatial feedback information into a spatial feedback report. The LPN can send the spatial feedback report from the LPN to a macro node for calculating a beamforming vector to reduce the macro node interference for the plurality of wireless devices in the LPN cell.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: March 10, 2015
    Assignee: Intel Corporation
    Inventors: Alexei Davydov, Gregory V. Morozov, Alexander Maltsev, Andrey Pudeyev
  • Patent number: 8977208
    Abstract: A transmitter front-end for wireless chip-to-chip communication, and for other, longer-range (e.g., several meters or several tens of meters) device-to-device communication is disclosed. The transmitter front-end can include a plurality of reflector power amplifiers implemented on an IC chip and an on-chip or on-package antenna for wireless transmitting a signal to another IC chip or device. The plurality of reflector power amplifiers can reflect the radiation of the on-chip or on-package antenna in a particular pattern such that the effective radiation pattern is reinforced in a desired direction and suppressed in an undesired direction. This helps to reduce the required output power of the transmitter front-end and mitigate interference with other potential wireless chip-to-chip or longer-range communications.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: March 10, 2015
    Assignee: Broadcom Corporation
    Inventors: Farid Shirinfar, Maryam Rofougaran, Ahmadreza Rofougaran
  • Patent number: 8971883
    Abstract: The disclosure is directed to managing registration of a wireless communication device (WCD) operating in a wireless network. The WCD may support registration according to a signaling protocol, such as session initiation protocol (SIP). The WCD adjusts a registration timer based on network quality experienced by the WCD. When network quality is poor, for example, the WCD reduces the length of the registration timer. Reduced network quality may indicate that the WCD is at risk of losing network coverage. By reducing the length of the registration timer when network quality is degraded, stale registrations for out-of-coverage WCDs can be reduced. In particular, the shortened registration timer will expire more quickly, permitting the registration to be cleared more quickly. Consequently, the amount of call forwarding and other resources devoted to stale registrations can be reduced. If the WCD retains network coverage, it can maintain a registration by sending another registration request.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: March 3, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Sudeep Ravi Kottilingal, Ramesh Ramaswamy
  • Patent number: 8971380
    Abstract: A machine-implemented system and method are described for removing interference between adjacent distributed-input-distributed-output (DIDO) clusters comprising. For example, a method according to one embodiment comprises: detecting signal strength at a first client from a main DIDO cluster; detecting interference signal strength at the first client from an interfering DIDO cluster; if the signal strength from the main DIDO cluster reaches a specified value relative to the value of the interference signal strength from the interfering DIDO cluster, then generating channel state information (CSI) defining channel state between one or more antennas of the first client and one or more antennas of the interfering DIDO cluster; transmitting the CSI from the first client to a base transceiver station (BTS) in the interfering DIDO cluster; and implementing DIDO precoding with inter-DIDO-cluster interference (IDCI) cancellation at the BTS in the interfering DIDO cluster to avoid RF interference at the first client.
    Type: Grant
    Filed: May 1, 2012
    Date of Patent: March 3, 2015
    Assignee: Rearden, LLC
    Inventors: Antonio Forenza, Stephen G. Perlman
  • Patent number: 8971815
    Abstract: A sensing module determines whether a signal sensed in a wireless channel is noise or is modulated by a remote device and attempts to determine, in response to the signal being modulated, a modulation scheme of the signal. A capacity determination module determines capacities of the wireless channel to transmit data using a plurality of modulation schemes. In response to the modulation scheme of the signal being determinable, the plurality of modulation schemes includes the modulation scheme of the signal. In response to the modulation scheme of the signal being indeterminable, the plurality of modulation schemes includes one or more modulation schemes that the remote device is configured to use to modulate the signal. A transmit module selects a first modulation scheme of the plurality of modulation schemes based on the capacities of the wireless channel and transmits data over the wireless channel using the first modulation scheme.
    Type: Grant
    Filed: April 21, 2014
    Date of Patent: March 3, 2015
    Assignee: Marvell International Ltd.
    Inventor: Jungwon Lee
  • Patent number: 8971874
    Abstract: Test systems for characterizing devices under test (DUTs) are provided. A test system for testing a DUT in a shunt configuration may include a signal generator and a matching network that is coupled between the signal generator and the DUT and that is optimized to apply desired voltage/current stress to the DUT with reduced source power. The matching network may be configured to provide matching and desired stress levels at two or more frequency bands. In another suitable embodiment, a test system for testing a DUT in a series configuration may include a signal generator, an input matching network coupled between the DUT and a first terminal of the DUT, and an output matching network coupled between the DUT and a second terminal of the DUT. The input and output matching network may be optimized to apply desired voltage/current stress to the DUT with reduced source power.
    Type: Grant
    Filed: April 29, 2013
    Date of Patent: March 3, 2015
    Assignee: Apple Inc.
    Inventors: Liang Han, Matthew A. Mow, James G. Judkins, Thomas E. Biedka, Ming-Ju Tsai, Robert W. Schlub
  • Patent number: 8971813
    Abstract: A method is provided for avoiding in-device interference. The method may include determining a portion of a frequency band used for data reception by a first wireless modem that may be affected by interference from a data transmission by a second wireless modem. The method may further include causing an indication of the determined portion of the frequency band to be provided to the first wireless modem. A corresponding apparatus and computer program product are also provided.
    Type: Grant
    Filed: April 26, 2011
    Date of Patent: March 3, 2015
    Assignee: Broadcom Corporation
    Inventors: Christopher Peter Callender, Juho Mikko Pirskanen
  • Patent number: 8971829
    Abstract: To estimate complex factors for use in predistortion of a power amplifier, a complex factor is selected a set of complex factors a computation interval. A solution value is estimated for the selected complex factor during the computation interval by an iterative computation that constrains the estimated solution value towards a final solution value over an arbitrary number of iterations that is not bounded by the duration of the computation interval. A cumulative error in the estimated solution value is computed at each iteration over consecutive computation intervals. From the cumulative error, it is determined whether a convergence criterion is met and, if so, the estimating is terminated. The termination occurs independently of the solution value estimated for any one of the complex factors in the set.
    Type: Grant
    Filed: July 19, 2013
    Date of Patent: March 3, 2015
    Assignee: MStar Semiconductor, Inc.
    Inventor: Khurram Muhammad
  • Publication number: 20150056931
    Abstract: Methods, systems, and devices are described for detection of one or more interfering signals in a particular frequency spectrum. Signal characteristics may be identified for a signal of interest in the spectrum, such as a signal that is desired to be received at a wireless communications device. Based at least in part on the characteristics, one or more interference detection opportunities may be identified, during which interfering signals in the spectrum may be detected. Interference detection opportunities may include, for example, periods when the signal of interest may be absent from the particular frequency spectrum. Transmissions in the frequency spectrum may be monitored during the interference detection opportunity to determine the presence of one or more interfering signals.
    Type: Application
    Filed: August 21, 2014
    Publication date: February 26, 2015
    Inventors: Srinivas Yerramalli, Tao Luo, Naga Bhushan, Peter Gaal
  • Publication number: 20150056930
    Abstract: A method of calibrating coexistence of several wirelessly communicating sub-systems within a wireless device wherein the wirelessly communicating sub-systems comprise several transmitters and several receivers which are interconnected through one or more interfaces, the method comprising:—activating one of the transmitters while maintaining the other transmitters off by causing said transmitter to transmit a first signal with a known set of characteristics;—measuring unwanted signal received at each receiver and originating from a coupling of said receivers with the activated transmitter;—storing coupling data derived from each of the measured unwanted signals in relation with the set of signal characteristics of the first signal and/or a set of unwanted signal characteristics, whereby forming a calibration database for adjusting operation of one or more transmitters and/or receivers to manage the coexistence of the plurality of wirelessly communicating sub-systems during normal operation of the wireless devi
    Type: Application
    Filed: March 25, 2013
    Publication date: February 26, 2015
    Applicant: ST-Ericcsson SA
    Inventor: Matthias Locher
  • Patent number: 8965295
    Abstract: Systems and methods for suppressing interference from a data signal received at a receiving device, where the receiving device has two or more receive antennas, are provided. Characteristics of a channel are estimated, the channel being a channel through which the data signal was transmitted by a transmitting device to the receiving device. A spatial correlation of interference and noise received at the two or more receive antennas of the receiving device is determined based on the estimated characteristics of the channel. The spatial correlation indicates how the interference and noise received at a particular one of the receive antennas is related to the interference and noise received at another one of the receive antennas. The spatial correlation of the interference and noise is used to suppress interference and noise from the data signal received at the receiving device.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: February 24, 2015
    Assignee: Marvell World Trade Ltd.
    Inventors: Raphael Cendrillon, Yakun Sun, Jiwoong Choi, Hui-Ling Lou
  • Patent number: 8965300
    Abstract: A method for testing transmission modes of a wireless communication device. According to the method, a switching range is determined in a parameter space in a test device. The parameter of the parameter space describes the quality of transmission and influences a recommendation for a transmission mode to be adjusted in a device to be tested. The switching range is a subspace of the parameter space and contains at least one switching limit for the recommendation for the subsequent transmission mode to be adjusted. In a further step, random parameter points from the switching range are generated depending on a probability distribution which is defined for the switching range. A signal is generated for every parameter point and has a transmission mode determined by the parameter point and is transmitted to the device to be tested.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: February 24, 2015
    Assignee: Rohde & Schwarz GmbH & Co. KG
    Inventors: Andreas Pauly, Juergen Schlienz
  • Patent number: 8965307
    Abstract: Systems and methods are disclosed relating to transmission of communications via high frequency antenna systems employing high-temperature superconductor filters and/or amplifiers. In certain embodiments, a comb linear amplifier combiner may be modified with, for example, cryogenically cooled and/or high-temperature superconductor components, such as matching units of bandpass filters. A computer control unit may be coupled to the transmission circuit to control operation of one or more of the low-power transmitters, filters, and/or amplifiers.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: February 24, 2015
    Assignee: Liberty University
    Inventors: Michael Anthony Maiuzzo, Ronald T. Sones
  • Patent number: 8965322
    Abstract: A low noise amplifier comprises at least one amplifying transistor (Ts1; Ts2) configured in a common source configuration to receive an input signal (RFin) at a gate terminal and provide an amplified signal at a drain terminal and at least one feedback path arranged to couple a part of the amplified signal back to the gate terminal and comprising a feedback impedance. The low noise amplifier further comprises a self-coupled step-up transformer having at least one primary winding (Lp) connected to a supply voltage (Vdd) and the drain terminal of the at least one amplifying transistor and at least one self-coupled secondary inductor winding (Lf1; Lf2) arranged in the feedback path. The low noise amplifier provides a better suppression for out-band interference and at the same time it has a wider input match bandwidth, decent conversion gain and decent noise figure without increasing power consumption.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: February 24, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventor: Fenghao Mu
  • Patent number: 8965296
    Abstract: Asymmetrical multicarrier interference avoidance in a communication from a network to a subscriber device is provided. The asymmetrical multicarrier interference avoidance technique comprises measuring signal-to-noise ratio interference values and sorting the measured values into two tables for selecting an anchor and a non-anchor frequency carrier pairs. The system is self-tuning based on changes in the network, the subscriber and the surrounding environment.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: February 24, 2015
    Assignee: AT&T Mobility II LLC
    Inventors: Arthur Richard Brisebois, Alain Ohana, William G. Mansfield, David Grant Shively, Thomas Keathley, Melvin D. Frerking, Yung Shirley Choi-Grogan
  • Patent number: 8965321
    Abstract: A stage is provided for a receiver of a wireless device. The stage comprises a matching network that separates amplified signals of interest received from an amplifier from amplified unwanted signals received from the amplifier in conjunction with additional downstream filters. The stage also comprises a signal path that comprises components for receiving and processing the amplified signals of interest, and a shunt path that comprises components for adjusting reflected energy sent back to the amplifier for limiting the output swing of the amplifier in a frequency band corresponding to the amplified unwanted signals.
    Type: Grant
    Filed: April 26, 2013
    Date of Patent: February 24, 2015
    Assignee: BlackBerry Limited
    Inventors: Wen-Yen Chan, Nasserullah Khan
  • Publication number: 20150050892
    Abstract: Disclosed is a device and method to automate the process of measuring RF noise, correlating measured noise with known sources, and making adjustments to the noise-measuring and reporting process. A wireless communication device is coupled to equipment at a fixed location, and transmits data about the operation of the equipment back to an operator, via a provider's network. Examples include fixed wireless terminals. A management entity aboard the wireless communication device performs the measurements via a transceiver and performs remedial actions when required, without requiring an onsite technician or remote assistance. The management entity may include a spectrum analyzer.
    Type: Application
    Filed: November 3, 2014
    Publication date: February 19, 2015
    Applicant: AT&T Mobility II LLC
    Inventor: Scott D. Prather
  • Patent number: 8958744
    Abstract: According to one embodiment, there is provided a wireless communication apparatus for making wireless connection in the first connection attempt state wherein a connection request is attempted using a predetermined frequency channel or the second connection attempt state wherein a connection request is attempted using a plurality of frequency channels. A frame generation unit generates a connection request frame which includes the first field for requesting a search of the plurality of frequency channels in response to occurrence of interference, and the second field indicating whether a corresponding frequency channel is a channel wherein occurrence of interference has been detected. A transmission unit transmits the connection request frame using the predetermined frequency channel in the first connection attempt state, and transmits the connection request frame using the plurality of frequency channels in the second connection attempt state.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: February 17, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tomoya Tandai, Tomoko Adachi, Takeshi Tomizawa
  • Patent number: 8958756
    Abstract: A cognitive radio (CR) communication apparatus and method is provided. A cognitive radio (CR) communication apparatus includes a signal receiving unit which receives signals from a primary user of a primary system and a secondary transmitter of a secondary system, the received signals including an element associated with at least one known signal of the secondary transmitter, and a determination unit which determines whether a signal of the primary user exists from among the received signals based on the element associated with the at least one known signal.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: February 17, 2015
    Assignees: Samsung Electronics Co., Ltd., Korea Advanced Institute of Science and Technology
    Inventors: Hyun Ho Choi, Yong Ho Cho, Jung Hyun Park, Dong Jo Park
  • Patent number: 8958838
    Abstract: Transmit power for an access point is controlled based on information received by the access point. For example, an access point may employ one or more algorithms that use messages received from nearby access terminals to maintain an acceptable tradeoff between providing an adequate coverage area for access point transmissions and mitigating interference that these transmissions cause at nearby access terminals. Here, the access point may employ a network listen-based algorithm upon initialization of the access terminal to provide preliminary transmit power control until sufficient information is collected for another transmit power control algorithm (e.g., an access terminal assisted algorithm). Also, the access terminal may employ an active access terminal protection scheme to mitigate interference the access point may otherwise cause to a nearby access terminal that is in active communication with another access point.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: February 17, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Chirag Sureshbhai Patel, Mehmet Yavuz, Leonard Henry Grokop, Vinay Chande, Sanjiv Nanda, Farhad Meshkati, Sumeeth Nagaraja
  • Patent number: 8954017
    Abstract: A communications device is disclosed that implements a phase-locked-loop to multiply a clock signal provided to a power management unit (PMU) by a variable integer value. Multiplying the PMU clock signal provides a second clock signal where the second clock signal is characterized by a fundamental component with one or more harmonics of the fundamental component that differ from the fundamental component and the one or more harmonics of the PMU clock signal. The fundamental component with one or more harmonics of the second clock signal does not occupy the same communication channel as the transmission communication signal of the communications device. Thus, minimizing the degradation of the transmission communication signal.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: February 10, 2015
    Assignee: Broadcom Corporation
    Inventors: Love Kothari, Ajat Hukkoo, Kerry Alan Thompson
  • Patent number: 8954109
    Abstract: The present invention provides a control function in an access point, switch, or like node on a wireless local area network. The control function operates to ensure frames transmitted by a user terminal are transmitted using an appropriate transmission priority scheme. The control function will assist and provide an appropriate priority level to the user terminal. Frames transmitted from the user terminal are passed through the control function, which will analyze priority level information provided in the frames to determine if the frames were transmitted using the appropriate transmission priority scheme. An enforcement action may be taken in response to identifying frames that were not transmitted using the appropriate transmission priority scheme.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: February 10, 2015
    Assignee: Apple Inc.
    Inventors: Osama Aboul-Magd, Hesham Elbakoury, Sameh Rabie
  • Patent number: 8954053
    Abstract: A method for link adaptation includes: classifying a radio channel; setting a set of link adaptation modes; and selecting a corresponding link adaptation mode according to a radio channel type. An apparatus for link adaptation includes: a classification module for performing a classification on a radio channel; a setting module for setting a set of link adaptation modes; and a mode selection module for selecting a corresponding link adaptation mode from the setting module according to a radio channel type of the classification. The present invention accordingly selects effective link adaptation modes in accordance with different types of radio channels, and is able to ensure to implement the maximum system throughput in different fading channels and maintain the stable and reliable link quality.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: February 10, 2015
    Assignee: ZTE Corporation
    Inventors: Qinghong Zhang, Hang Li
  • Patent number: 8954016
    Abstract: A method, in the case of which it is monitored in a wireless adapter connected to a field device whether, in the context of communication with the field device, a status change of the field device is being reported. In case a status change has been reported, the wireless adapter queries for expanded status information of the field device. The expanded status information is transmitted event-controlled from the wireless adapter to a superordinated communication unit and provided through such to an evaluation tool, in case a comparison of the expanded status information with a status pattern adapted specifically for the field device shows that the relevant, expanded status information should be evaluated.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: February 10, 2015
    Assignee: Endress + Hauser Process Solutions AG
    Inventors: Christian Seiler, Marc Fiedler, Stefan Probst, Werner Thoren
  • Patent number: 8948007
    Abstract: A system configured to receive a request to identify a quality of service (QoS) policy to be used to process traffic that is received from a user device associated with another network; obtain an interoperable QoS policy, where the interoperable QoS policy identifies a first QoS level, associated with the other network, that corresponds to a type of traffic received from the user device; obtain, from the interoperable QoS policy, a second QoS level that corresponds to the first QoS level; and send, to a device, an instruction to process the traffic based on the second QoS level.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: February 3, 2015
    Assignees: Verizon Patent and Licensing Inc., Cellco Partnership
    Inventors: Thomas H. Tan, Lalit R. Kotecha, Jay J. Lee, Steven R. Rados, Arda Aksu, Priscilla Lau, Patricia Ruey-Jane Chang
  • Patent number: 8948235
    Abstract: A intelligent backhaul radio is disclosed, which can operate by zero division duplexing for use in PTP or PMP topologies, providing for significant spectrum usage benefits among other benefits. Specific system architectures and structures to enable active cancellation of multiple transmit signals at multiple receivers within a MIMO radio are disclosed. Further disclosed aspects include the adaptive optimization of cancellation parameters or coefficients.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: February 3, 2015
    Assignee: CBF Networks, Inc.
    Inventors: Kevin J. Negus, James A. Proctor, Jr.
  • Patent number: 8948744
    Abstract: A spatio-temporal random voting scheme is provided that incorporates location distribution, spatial randomness, and temporal randomness in the collection of information from a plurality of sensing devices within the cognitive network. The region is divided into a plurality of sectors, where each sector is a portion of the region. A subset of sectors is selected from the plurality of sectors in the region to provide spatial randomness. A device is randomly selected from each sector in the subset of sectors to provide additional spatial randomness to the information collection process. Temporal randomness may be introduced by randomly selecting a timeslot within a sensing window period in which devices are to scan a frequency spectrum band to determine if a signal energy above a threshold is detected. Sensing reports are then collected from the selected sensing devices and used to determine whether the frequency spectrum band is available or in use.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: February 3, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Yong Jin Kim, Lakshminath Reddy Dondeti, Stephen Jay Shellhammer, Wenyi Zhang
  • Patent number: 8948799
    Abstract: A method and apparatus are provided for a wireless communication system including a base station and at least one user equipment. A Channel Quality Indicator (CQI) table can be generated so that only an index corresponding to the measured CQI needs to be fed back to the base station. The CQI tables proposed herein may be suitable to different channel statistics, different Multiple Input Multiple Output (MIMO) mode and may be optimized based on either performance or implementation complexity. Multiple CQI tables may be formed into one compound CQI table. The CQI tables may be stored at both a base station and user equipment. The base station can select a CQI table from the set of tables. The base station signals the selection of the CQI table to the user equipment and the user equipment feeds back indices from the selected CQI table to the base station.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: February 3, 2015
    Assignee: Microsoft Corporation
    Inventors: Hua Xu, Dong-Sheng Yu, Ming Jia, Jianglei Ma