公开(公告)号：US09838053B2

公开(公告)日：2017-12-05

申请号：US15286073

申请日：2016-10-05

Applicant: Panasonic Automotive Systems Company of America, Division of Panasonic Corporation of North America

Inventor： Donald Thomas ,  Jason Hingerton ,  Tatsuya Fujisawa ,  Jammie Chu ,  Shree Jaisimha ,  Robert Baillargeon

IPC: H04B1/18 ,  H03J1/00 ,  H04B1/10 ,  H04B1/08 ,  H04H20/26 ,  H04L25/08 ,  H04W52/02 ,  H04B17/345

CPC classification number: H04B1/1027 ,  H03J1/0008 ,  H04B1/082 ,  H04B1/1036 ,  H04B17/345 ,  H04B2001/1072 ,  H04H20/26 ,  H04H2201/13 ,  H04H2201/60 ,  H04L25/08 ,  H04W52/0209 ,  Y02D70/00 ,  Y02D70/40

Abstract: A method of performing alternate frequency switching in a radio includes tuning the radio to a primary frequency. A candidate alternate frequency is identified. It is determined whether the candidate alternate frequency is a third order inter-modulation artifact. Tuning is switched from the primary frequency to the candidate alternate frequency only if it is determined in the determining step that the candidate alternate frequency is not a third order inter-modulation artifact.

公开(公告)号：US20170346547A1

公开(公告)日：2017-11-30

申请号：US15496056

申请日：2017-04-25

Applicant: Cisco Technology, Inc.

Inventor： Paul J. Stager ,  Matthew A. Silverman ,  Brian D. Hart ,  David Kloper

IPC: H04B7/08 ,  H04B1/10 ,  H04B7/0452 ,  H04W88/08

CPC classification number: H04B7/0885 ,  H04B1/1036 ,  H04B7/024 ,  H04B7/0452 ,  H04L25/03 ,  H04L43/16 ,  H04W88/085

Abstract: A system and method are provided for performing stomp-and-restart techniques in distributed MU-MIMO system. A plurality of radio head devices are provided that are configured to be deployed separated from each other in a coverage region of interest of a wireless network. A central processor subsystem is provided that is in communication with the plurality of radio head devices. The central processor subsystem configured to perform several operations based on downconverted samples received from the plurality of radio head devices.

公开(公告)号：US09832000B2

公开(公告)日：2017-11-28

申请号：US15067710

申请日：2016-03-11

Applicant: ISCO INTERNATIONAL, LLC

Inventor： Amr Abdelmonem ,  Mikhail Galeev ,  Sean S. Cordone ,  Zhigang Wang ,  Howard Wong ,  Jorge Seoane

IPC: H04W24/10 ,  H04W4/02 ,  H04L12/24 ,  H04L5/00 ,  H04B1/709 ,  H04B17/00 ,  H04W72/04 ,  H04W72/12 ,  H04W28/02 ,  H04W72/08 ,  H04B1/7103 ,  H04B15/00 ,  H04W24/08 ,  H04W64/00 ,  H04W52/04 ,  H04B1/10 ,  H04B1/71 ,  H04B17/26 ,  H04B17/345 ,  H04W28/04 ,  H04W40/16 ,  H04W16/28 ,  H04W24/02 ,  H04W52/24 ,  H04B17/21 ,  H04B17/373 ,  H04B7/26 ,  H04J11/00

CPC classification number: H04L5/0073 ,  H04B1/1036 ,  H04B1/709 ,  H04B1/71 ,  H04B1/7103 ,  H04B7/2634 ,  H04B15/00 ,  H04B17/00 ,  H04B17/21 ,  H04B17/26 ,  H04B17/327 ,  H04B17/345 ,  H04B17/373 ,  H04B2201/709709 ,  H04B2201/709745 ,  H04J11/0066 ,  H04L5/0007 ,  H04L5/0026 ,  H04L5/0032 ,  H04L5/006 ,  H04L41/069 ,  H04W4/02 ,  H04W4/023 ,  H04W16/28 ,  H04W24/02 ,  H04W24/08 ,  H04W24/10 ,  H04W28/0236 ,  H04W28/04 ,  H04W40/16 ,  H04W52/04 ,  H04W52/14 ,  H04W52/243 ,  H04W64/00 ,  H04W64/006 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/0486 ,  H04W72/082 ,  H04W72/085 ,  H04W72/1226 ,  H04W72/1231

Abstract: A system that incorporates the subject disclosure may include, for example, a method for measuring a power level in at least a portion of a plurality of resource blocks occurring in a radio frequency spectrum, wherein the measuring occurs for a plurality of time cycles to generate a plurality of power level measurements, calculating a baseline power level according to at least a portion of the plurality of power levels, determining a threshold from the baseline power level, and monitoring at least a portion of the plurality of resource blocks for signal interference according to the threshold. Other embodiments are disclosed.

公开(公告)号：US20170317807A1

公开(公告)日：2017-11-02

申请号：US15655439

申请日：2017-07-20

Applicant: ISCO INTERNATIONAL, LLC

Inventor： Amr ABDELMONEM ,  Sean S. CORDONE ,  Bill MYERS

IPC: H04L5/00 ,  H04B17/21 ,  H04W72/08 ,  H04W72/04 ,  H04W64/00 ,  H04W52/24 ,  H04W52/04 ,  H04W40/16 ,  H04W28/04 ,  H04W28/02 ,  H04W24/10 ,  H04W24/08 ,  H04W24/02 ,  H04W16/28 ,  H04W4/02 ,  H04L12/24 ,  H04B17/26 ,  H04B17/345 ,  H04B17/373 ,  H04B1/10 ,  H04B17/00 ,  H04B15/00 ,  H04B1/7103 ,  H04B1/71 ,  H04B1/709 ,  H04W72/12 ,  H04J11/00 ,  H04B7/26

CPC classification number: H04L5/0073 ,  H04B1/1036 ,  H04B1/709 ,  H04B1/71 ,  H04B1/7103 ,  H04B7/2634 ,  H04B15/00 ,  H04B17/00 ,  H04B17/21 ,  H04B17/26 ,  H04B17/327 ,  H04B17/345 ,  H04B17/373 ,  H04B2201/709709 ,  H04B2201/709745 ,  H04J11/0066 ,  H04L5/0007 ,  H04L5/0026 ,  H04L5/0032 ,  H04L5/006 ,  H04L41/069 ,  H04W4/02 ,  H04W4/023 ,  H04W16/28 ,  H04W24/02 ,  H04W24/08 ,  H04W24/10 ,  H04W28/0236 ,  H04W28/04 ,  H04W40/16 ,  H04W52/04 ,  H04W52/14 ,  H04W52/243 ,  H04W64/00 ,  H04W64/006 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/0486 ,  H04W72/082 ,  H04W72/085 ,  H04W72/1226 ,  H04W72/1231

Abstract: A system that incorporates the subject disclosure may include, for example, a device comprising a memory to store instructions and a processor coupled to the memory, wherein responsive to executing the instructions, the processor performs operations. The operations comprise receiving signals over a spectrum of frequencies, providing location data of the device to a base station, receiving a request from a base station to perform a spectral analysis of the signals, detecting an interference among the signals, and providing, in response to the request, data to the base station regarding a source of the interference, wherein the data comprises a location of the source relative to the device, spectral data for identifying the source, and a time a frequency of occurrence of the interference. Other embodiments are disclosed.

公开(公告)号：US09793937B2

公开(公告)日：2017-10-17

申请号：US14927732

申请日：2015-10-30

Applicant: Afero, Inc.

Inventor： Omar Zakaria ,  Joe Britt

IPC: H04B1/10 ,  H04W4/00 ,  H04L12/933 ,  H04B17/318 ,  H04L12/741

CPC classification number: H04B1/1036 ,  H04B17/318 ,  H04L45/745 ,  H04L49/15 ,  H04W4/80

Abstract: An apparatus and method are described for filtering wireless signals. For example, one embodiment of the invention comprises: one or more radios to receive a plurality of wireless signals within a defined spectrum; an energy detection and filtering module to filter received wireless signals based on a detected energy level of the received wireless signals and in accordance with a set of energy-based filtering parameters, the energy detection and filtering module to output energy-filtered wireless signals; and a signal characteristic analysis and filtering module to analyze and filter the energy-filtered wireless signals based on characteristics of the received wireless signals in accordance with a set of signal analysis filtering parameters to output energy-and-characteristic filtered wireless signals.

公开(公告)号：US20170294928A1

公开(公告)日：2017-10-12

申请号：US15632016

申请日：2017-06-23

Applicant: AceAxis Limited

Inventor： Simon John GALE ,  David Damian Nicholas BEVAN ,  Fiona WILSON ,  James Mark NADEN

IPC: H04B1/10 ,  H04W24/08 ,  H04B10/2575

CPC classification number: H04B1/1027 ,  H04B1/1036 ,  H04B1/525 ,  H04B7/0413 ,  H04B10/25753 ,  H04W24/08 ,  H04W72/0453 ,  H04W72/082 ,  H04W84/18

Abstract: A method of processing interference received in a wireless network, the interference comprising a non-linear product of at least one downlink signal of the wireless network, is provided. The method includes intercepting a plurality of optical links, each optical link being between a respective baseband processing unit of a plurality of baseband processing units and a respective radio head of a plurality of radio heads, to provide a plurality of downlink and uplink data streams. The method includes detecting interference in an uplink data stream representing signals received at a first uplink carrier frequency caused by non-linear products of at least a signal at a first downlink carrier frequency represented by a downlink data stream. The method includes generating an indication comprising information relating to an uplink carrier frequency experiencing interference and at least one downlink carrier frequency causing interference.

公开(公告)号：US09755677B2

公开(公告)日：2017-09-05

申请号：US15434000

申请日：2017-02-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Timothy J. Talty ,  Yen-Cheng Kuan ,  Cynthia D. Baringer ,  Mohiuddin Ahmed ,  James Chingwei Li ,  Hsuanyu Pan ,  Emilio A. Sovero

IPC: H04B1/16 ,  H04B1/10 ,  H04B1/3822

CPC classification number: H04B1/0475 ,  H03F3/24 ,  H03M1/0673 ,  H03M1/365 ,  H03M1/662 ,  H03M3/408 ,  H03M3/424 ,  H04B1/0007 ,  H04B1/1036 ,  H04B1/3822 ,  H04B1/40 ,  H04B2001/0408 ,  H04B2001/0425 ,  H04B2001/1063 ,  H04L1/0071

Abstract: A cellular radio architecture that includes a receiver module having a delta-sigma modulator that converts analog signals to digital signals and a Fast-Fourier transform (FFT) circuit that converts the digital signals to frequency spectrum signals. The architecture also includes a moving average circuit that smoothes out the frequency spectrum signals by applying a moving average to the signals. The architecture further includes a differentiator circuit that differentiates the frequency spectrum signals to make the signals linear, and a minimum finding circuit that converts the differentiated frequency spectrum signals into positive values for frequencies above a notch frequency in the differentiated signals and negative values for frequencies below the notch frequency in the differentiated signals. A transition between the positive and negative values is compared to a desired notch frequency value, and if the difference is greater than a predetermined threshold, an adaptive control circuit calibrates the modulator.

公开(公告)号：US20170250716A1

公开(公告)日：2017-08-31

申请号：US15510910

申请日：2015-09-14

Applicant: Peter R. Kinget ,  John Wright ,  Rabia Tugce Yazicigil

Inventor： Peter R. Kinget ,  John Wright ,  Rabia Tugce Yazicigil

IPC: H04B1/10 ,  H03F3/19 ,  H03D7/16 ,  H04B1/00

CPC classification number: H04B1/1036 ,  H03D7/161 ,  H03F3/19 ,  H03F2200/294 ,  H03F2200/451 ,  H04B1/0017 ,  H04B1/1027 ,  H04B17/345 ,  H04L27/22

Abstract: Mechanisms for interferer detection can detect interferers by detecting elevated signal amplitudes in one or more of a plurality of bins (or bands) in a frequency range between a maximum frequency (fMAX) and a minimum frequency (fMIN). To perform rapid interferer detection, the mechanisms downconvert an input signal x(t) with a local oscillator (LO) to a complex baseband signal xI(t)+jxQ(t). xI(t) and xQ(t) are then multiplied by m unique pseudorandom noise (PN) sequences (e.g., Gold sequences) gm(t) to produce m branch signals for I and m branch signals for Q. The branch signals are then low pass filtered, converted from analog to digital form, and pairwise combined by a pairwise complex combiner. Finally, a support recovery function is used to identify interferers.

公开(公告)号：US09748991B2

公开(公告)日：2017-08-29

申请号：US14910672

申请日：2013-08-08

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Jichang Liao ,  Xiaoliang Du

IPC: H04B1/10 ,  H04B1/16 ,  H04B1/00 ,  H04B1/18 ,  H01P1/205

CPC classification number: H04B1/1607 ,  H01P1/2053 ,  H04B1/006 ,  H04B1/1036 ,  H04B1/18

Abstract: A high performance switch module to filter a radio frequency signal and to selectively connect to an output includes a filter unit and a plurality of switches. The filter unit has a filter configured to connect to the radio frequency signal and having a plurality of parallel output ports. The plurality of switches is connected between the plurality of parallel output ports and the output, the plurality of switches configured to connect to a control input to selectively connect an output port of the plurality of parallel output ports to the output and to selectively connect a remainder of the plurality of parallel output ports to a connection providing a substantially full reflection to the remainder of the plurality of parallel output ports of the filter unit.

公开(公告)号：US09742605B2

公开(公告)日：2017-08-22

申请号：US15246324

申请日：2016-08-24

Applicant: Kamilo Feher

Inventor： Kamilo Feher

IPC: H04L27/26 ,  G06F19/00 ,  H04W64/00 ,  H04W88/06 ,  A61B5/00 ,  H04B1/709 ,  H04L27/20 ,  H04W4/02 ,  H04W4/22 ,  H04B7/26 ,  H04L1/00 ,  H04L5/14 ,  H04B1/707 ,  H04L5/00 ,  H04W12/06 ,  H04B1/10 ,  H04B1/69 ,  H04B7/04 ,  H04M7/00 ,  A61B5/01 ,  A61B5/024 ,  A61B5/145 ,  H04J11/00 ,  H04W88/02

CPC classification number: H04L27/2602 ,  A61B5/0015 ,  A61B5/0022 ,  A61B5/01 ,  A61B5/024 ,  A61B5/14532 ,  G06F19/00 ,  G16H10/60 ,  G16H15/00 ,  H04B1/1036 ,  H04B1/69 ,  H04B1/707 ,  H04B1/709 ,  H04B7/04 ,  H04B7/18504 ,  H04B7/2628 ,  H04B2201/70715 ,  H04B2201/70716 ,  H04J11/00 ,  H04L1/0003 ,  H04L5/0007 ,  H04L5/1453 ,  H04L27/2017 ,  H04L27/2071 ,  H04L27/2627 ,  H04L27/2649 ,  H04M7/006 ,  H04W4/023 ,  H04W4/025 ,  H04W4/90 ,  H04W12/06 ,  H04W64/00 ,  H04W88/02 ,  H04W88/06 ,  Y02A90/26

Abstract: Mobile Networks using Orthogonal Frequency Division Multiplex (OFDM) and or spread spectrum modulation and demodulation techniques process in mobile devices spread spectrum signals into OFDM signals. A first mobile device receives and demodulates a spread spectrum modulated signal into a baseband spread spectrum signal and processes the baseband spread spectrum signal into a first OFDM signal. The first OFDM signal is transmitted to a second mobile device. In the second mobile device the received first OFDM signal is demodulated and processed into a second OFDM signal. The second OFDM signal is transmitted in the mobile network. Alternatively, the first mobile device receives, instead of a spread spectrum signal a modulated OFDM signal. The mobile device has a motion detector which generates a motion detector signal for control of the mobile device. The mobile device has a heart rate sensor and measures the heart rate.