Determination Of Communication Parameter Patents (Class 398/25)
  • Patent number: 10271226
    Abstract: Adaptation of a network is disclosed. A proposed adaptation, determined by a sub-network component of the network based on an intended effect to the sub-network, can be received by a network-level arbitration component. The network-level arbitration component can determine if the proposed adaptation satisfies a rule based on predicted results on the network from implementing the proposed adaptation. Where the rule is satisfied the adaptation can be implemented. A result of the implementation can be compared to the predicted results to determine if the network should be reverted to a pre-implementation state. In an aspect, the network-level arbitration component can be a core-network component. In an embodiment, the network-level arbitration component can be a virtualized component on a network provider server, a cloud server, etc.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: April 23, 2019
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Jesse Chan, David Kinsey
  • Patent number: 10270526
    Abstract: A terminal status monitoring apparatus connected to a terminal at an optical subscriber side in an optical network is provided. A signal transferring unit transfers a downlink optical signal to the terminal and receives, as a reflected optical signal, the downlink optical signal which is reflected at the terminal. A signal receiving unit measures an intensity of the reflected optical signal. A signal processing unit determines a connection status of a terminal device at the terminal by comparing an intensity of the downlink optical signal with the intensity of the reflected optical signal. A signal output unit outputs the connection status.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: April 23, 2019
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Byung-Hee Son, Geun Yong Kim, Jae In Kim, Hee Do Kim, Moon Kyun Oh, Hark Yoo, Dongsoo Lee
  • Patent number: 10263697
    Abstract: The present disclosure discloses a method and an apparatus for monitoring chromatic dispersion in an optical communications network. The method includes: performing coherent mixing of a to-be-monitored signal with a first optical signal and a second optical signal to obtain two analog electrical signals, where center frequencies of the first optical signal and the second optical signal are located on two sides of a center frequency of the to-be-monitored signal, and a difference between the center frequencies of these two optical signals equals a Baud rate; converting the two analog electrical signals into two corresponding first time domain power signals; determining a value of a time delay between these two time domain power signals; and obtaining, according to a correspondence between the value of the time delay and the chromatic dispersion, the fiber chromatic dispersion generated in a process of transmitting the to-be-monitored signal.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: April 16, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Zhaohui Li, Yuli Chen, Dawei Wang
  • Patent number: 10256906
    Abstract: Visible-light communication (VLC) is an optical wireless communication technique that uses light emitting diodes (LEDs) or other optical sources to transmit information to a user equipment (UE) device. An optically-based location determination approach, such as using VLC infrastructure, can meet a desire for location-based services where use of VLC can provide a solution to an indoor localization or navigation problem. A fingerprinting approach can include use of an optical received signal strength (RSS) or other information (e.g., an image of a scene) to generate a spatial fingerprint map of an area. A later-received RSS on the UE device and the prior-generated fingerprint map representative of RSS can be received, and a fingerprint map and RSS observations can be provided as inputs to a Bayesian filter, such as an Extended Kalman Filter (EKF) or a Particle Filter, to provide an estimated position for the UE device.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: April 9, 2019
    Assignee: University of Virginia Patent Foundation
    Inventors: Maite Brandt-Pearce, Zafer Vatansever
  • Patent number: 10250324
    Abstract: An optical trunk switch supporting an Optical Time-Domain Reflectometer (OTDR) includes a transmit switch configured to provide an input signal to one or more of a primary fiber path and a standby fiber path; a receive switch configured to provide an output signal from one of the primary fiber path and the standby fiber path; and an OTDR connection configured to provide one or more OTDR signals to monitor an inactive path of the primary fiber path and the standby fiber.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: April 2, 2019
    Assignee: Ciena Corporation
    Inventors: Paul Chedore, Jean-Luc Archambault
  • Patent number: 10218447
    Abstract: When a frequency deviation compensation amount is compensated for by use of frequency shift, a phase offset occurs between adjacent input blocks included in a plurality of input blocks as divided, with the result that an error occurs in a reconstructed bit sequence. A frequency deviation compensation system of the invention is characterized by comprising: a frequency deviation compensation means for compensating for a frequency deviation occurring in a signal by use of frequency shift; and a phase offset compensation means for compensating for a phase offset occurring, in the signal, due to the frequency shift.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: February 26, 2019
    Assignee: NEC CORPORATION
    Inventors: Daisaku Ogasahara, Junichi Abe
  • Patent number: 10203553
    Abstract: Disclosed is a backlight module which includes a plurality of light-emitting devices arranged in an array of multiple rows and multiple columns. Each row of light-emitting devices include a plurality of first light-emitting devices for emitting red light, a plurality of second light-emitting devices for emitting green light and a plurality of third light-emitting devices for emitting blue light. The first light-emitting device, the second light-emitting devices and the third light-emitting devices in each row of light-emitting devices are driven to sequentially emit light based on respective data signals in a light-emitting phase. Further disclosed are a method of driving the backlight module and a display device.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: February 12, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Shengji Yang, Xiaochuan Chen, Panhua Wang, Xue Dong, Hailin Xue, Haisheng Wang, Weijie Zhao
  • Patent number: 10171309
    Abstract: A topology service may include a topology database and topology service interface used by clients to query the topology database. The topology database may describe a topology of resources of an infrastructure that may include racks of resources such as network, compute and storage resources. The topology database may be populated using discovery information returned as a result of issuing discovery requests to switches. The discovery information may identify connectivity between switches and other resources. The discovery information may be processed to determine assigned switch roles and additional derived information such as regarding instances of topological entities in the infrastructure. The derived information may identify instances of racks, rows and data centers in the infrastructure. The topology database may identify particular resources included in the different racks, rows, and data centers as well as connectivity between resources and communication capabilities of resource interfaces.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: January 1, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Erik P. Smith, Alan Rajapa, Jean E. Pierre, Massarrah Tannous, Mark Lippitt
  • Patent number: 10153834
    Abstract: An optical fiber replacement method in an optical network is provided. The optical fiber replacement method in the optical network is based on blocking due to an optical signal noise ratio limitation, in which standard single-mode optical fibers in an existing optical network are gradually replaced with ultra-low loss optical fibers. With the optical replacement method in the optical network, performance of the optical network can be improved to the greatest extent while ensuring low replacement cost in a process of gradually replacing the optical fibers.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: December 11, 2018
    Assignee: SOOCHOW UNIVERSITY
    Inventors: Gangxiang Shen, Yanxin Guan
  • Patent number: 10142031
    Abstract: A technique is provided for a receiver of an optical signal. The technique includes an apparatus that is configured to input digitized samples of the optical signal at a first sampling rate. The apparatus is further configured to filter the digitized samples based on a plurality of filter coefficients to obtain filtered samples of the optical signal at a second sampling rate. The second sampling rate is different from the first sampling rate. The apparatus is further configured to output the filtered samples of the optical signal at the second sampling rate.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: November 27, 2018
    Assignee: ALCATEL LUCENT
    Inventors: Gabriel Charlet, Massimiliano Salsi
  • Patent number: 10127602
    Abstract: A system, computer-readable storage medium storing at least one program, and computer-implemented method for a transient local commerce search service is provided. Location data identifying a temporary geographic location of a merchant having a particular product available for sale is received. Temporal data indicating a specified time when the particular product is available at the temporary location of the merchant is also received. It is then determined that the particular product is available within a specified location and at the specified period of time. Display data to display at least one merchant providing the particular product within the geographic location and at the specified period of time is then provided.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: November 13, 2018
    Assignee: eBay Inc.
    Inventor: Kevin Patrick Fries
  • Patent number: 10110509
    Abstract: A network switch comprises a plurality of optical physical transport layer resources and a control plane management engine capable of receiving, via a request over a network interface, at least one control plane provisioning policy that maps at least one upper layer resource to at least some of the optical physical transport layer resources. The control plane management engine provisions at least some of the optical physical transport layer resources for use by at least one virtual control plane, which operates according to rules of the control plane provisioning policy. The control plane management engine is configured to manage network traffic among the at least some optical physical transport layer resources and external networking nodes according to the at least one virtual control plane.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: October 23, 2018
    Assignee: Nant Holdings IP, LLC
    Inventor: Thomas Wittenschlaeger
  • Patent number: 10069572
    Abstract: Methods and systems are described for sampling an LCom message and accurately decoding the entire LCom message using a light receiver (e.g., digital camera) of a typical mobile computing device, such as a smartphone, tablet, or other mobile computing device. In one embodiment, a curvature method is disclosed to determine LCom signal bit values from a curvature value of a running average calculation of light sensor data. In another embodiment, a signal reconstruction method is disclosed to determine LCom signal bit values from a comparison of modeled data buffers to light sensor data.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: September 4, 2018
    Assignee: OSRAM SYLVANIA Inc.
    Inventors: Christian Breuer, Barry Stout, Anant Aggarwal
  • Patent number: 10069571
    Abstract: Methods of operating an optical communication system in coherent optical transmissions for metro applications. Relative to conventional solutions, the optical communication system can be implemented with reduced cost and can operate with reduced power consumption, while maintaining high data rate performance (e.g., 100 G). Furthermore, a programmable transceiver enables compatibility with a range of different types of optical networks having varying performance and power tradeoffs. In one embodiment, the optical communication system uses 100 Gb/s dual-polarization 16-point quadrature amplitude modulation (DP-16QAM) with non-linear pre-compensation of Indium Phosphide (InP) optics for low power consumption.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: September 4, 2018
    Assignee: INPHI CORPORATION
    Inventors: Paul Voois, Diego Ernesto Crivelli, Ramiro Rogelio Lopez, Jorge Manuel Finochietto, Oscar Ernesto Agazzi, Nariman Yousefi, Norman L. Swenson
  • Patent number: 10050740
    Abstract: A single-wavelength light path is selected between a source access node and a destination access node of a wavelength-division multiplexed optical network, including selecting an illuminated wavelength of the light path and selecting a start time and duration for a data transfer that would not interfere with other data transfers. If no start time/wavelength combination is available with duration sufficient to transport the data, an additional wavelength is automatically selected, based on modeling, that would not impair traffic being carried by other wavelengths in the network, and without a time-consuming manual process of the prior art. The scheduling process may include selecting a set of optical fibers, a wavelength, a start time and an end time to transport proposed traffic. A novel scheduler avoids checking every possible start time, thereby saving significant processing time. The scheduler schedules single-wavelength light paths, rather than relying on complex wavelength shifting schemes.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: August 14, 2018
    Assignee: Massachusetts Institute of Technology
    Inventors: Lei Zhang, Vincent W. S. Chan
  • Patent number: 10027437
    Abstract: A mode-multiplexing control method, and a transmission apparatus and reception apparatus for the same, the mode-multiplexing control method performed by the transmission apparatus, the mode-multiplexing control method including measuring data traffic, determining a transmission mode count to be used based on the measured data traffic, and transmitting data to a reception apparatus through an optical line in transmission modes corresponding to the determined transmission mode count.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: July 17, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sang Rok Moon, Changyo Han
  • Patent number: 10014947
    Abstract: A digital instruction is generated regarding one or more electrical-to-optical conversion impairments induced at the transmitter of an optical communication system. The digital instruction may be used by the transmitter to reduce the impairments. Alternatively, or additionally, the digital instruction may be used by the receiver of the optical communication system to compensate for the impairments.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: July 3, 2018
    Assignee: Ciena Corporation
    Inventors: Qunbi Zhuge, Kevin Farley, Kim Roberts, Maurice O'Sullivan
  • Patent number: 9986317
    Abstract: Systems and methods for modeling non-visible optical sources in a spectrum controller for control thereof include receiving channel routing information and signal characteristics for the non-visible channels separately from visible channels, wherein the visible channels are formed by optical transceivers communicatively coupled to the spectrum controller and the non-visible channels are formed by optical transceivers without communication to the spectrum controller; utilizing a combination of the channel routing information and signal characteristics for both the visible channels and the non-visible channels as input to the spectrum controller; performing control of optical spectrum based on the input; and providing output adjustments based on the control.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: May 29, 2018
    Assignee: Ciena Corporation
    Inventors: Choudhury A. Al Sayeed, Dave C. Bownass, Edward Chen
  • Patent number: 9983371
    Abstract: An apparatus and method of assembly are described that provide improved mechanisms for cooling an optoelectronic transducer in a fiber optic system. The apparatus includes a thermoelectric cooler (TEC) secured to the optoelectronic transducer for removing heat from the optoelectronic transducer in response to instructions from a TEC driver, as well as a microcontroller electrically connected to the TEC driver for monitoring temperature and communicating with the TEC driver to selectively activate and deactivate the TEC at least partially based on the monitored temperature and/or other measured/detected data to effect a more efficient cooling mechanism for optoelectronic transducers, such as VCSELs. In addition, the user may be able to configure the system to maintain the optoelectronic transducer within a user-defined range of temperatures.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: May 29, 2018
    Assignee: Mellanox Technologies, Ltd.
    Inventors: Morees Ghandour, Elad Mentovich, Itshak Kalifa, Sylvie Rockman, Dalit Kimhi, Alon Webman
  • Patent number: 9979468
    Abstract: It is difficult in an optical network to achieve fault recovery in case of multiple failures without decreasing the usage efficiency of the optical network; therefore, an optical communication system according to an exemplary aspect of the present invention includes an optical network management device including an optical path setting means for setting, to a physical route differing from each other, a backup path corresponding to each of a plurality of active paths on an identical physical route, and a failure-case optical path setting means for setting a failure-case backup path with a compressed band of the backup path, to a physical route without a failure in a case where failures arising on more than one physical route among the physical routes; and an optical node device including an optical transceiver means for transmitting and receiving optical signals using failure-case backup path information resulting from setting by the failure-case optical path setting means.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: May 22, 2018
    Assignee: NEC Corporation
    Inventors: Shinsuke Fujisawa, Hitoshi Takeshita, Tomoyuki Hino, Akio Tajima
  • Patent number: 9867261
    Abstract: A light emitting device with a dimming visible light communication function and an interaction device applying for visible light are provided. The light emitting device with the dimming visible light communication function comprises a luminance adjusting unit, a control circuit and a light emitting device. The luminance adjusting unit outputs a luminance adjusting signal according to luminance adjusted by a user. The control circuit coupled to the luminance adjusting unit outputs a pulse width modulation (PWM) signal according to the luminance adjusting signal. The light emitting device outputs visible light, receives the PWM signal, and is turned on or off according to states of a logic high voltage and a logic low voltage of the PWM signal. In an idle mode, the PWM signal operates at a first frequency. In a light communication mode, an operating frequency of the PWM signal is changed according to transmitted data.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: January 9, 2018
    Assignee: Generalplus Technology Inc.
    Inventors: Li Sheng Lo, Hsien-Yao Li
  • Patent number: 9859977
    Abstract: A method, apparatus and system estimating channel power, and monitoring a frequency spectrum characteristic. A method for estimating channel power includes extracting frequency spectrum information from a received signal, so as to obtain a frequency spectrum of the received signal, estimating power of a central channel in the frequency spectra according to a power value of a flat area of the central channel, and estimating power of a neighboring channel in the frequency spectra according to a power value of a flat area of the neighboring channel. With the embodiments of the present disclosure, the power of the central channel and the power of the neighboring channel may be estimated by using only frequency spectrum information obtained by a single optical receiver, so as to quantitatively evaluate influence of a power imbalance effect, thereby ensuring precision of the power estimation, and reducing effects of nonideal factors on the estimated values.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: January 2, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Ying Zhao, Liang Dou, Zhenning Tao
  • Patent number: 9853730
    Abstract: A Light Emitting Diode (LED) based illumination device authenticates a mobile electronics device on a lighting communications network. The mobile electronic device may request a communications link on the lighting communications network and detect modulated illumination light emitted from the LED based illumination device. The modulated light may include an optical code. The mobile electronic device may determine the optical code from the modulated illumination light and communicate an indication of the optical code to the LED based illumination device. The LED based illumination device may determine if the indication of the optical code is correct and provide, in response, a communication link to the mobile electronics device on the lighting communications network.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: December 26, 2017
    Assignee: Xicato, Inc.
    Inventors: Martin Emil Mueller, Barry Mark Loveridge, Jeffrey P. Hushley, Gerard Harbers
  • Patent number: 9847833
    Abstract: Disclosed are methods for monitoring and measuring Optical Signal-To-Noise Ratios in optical communications systems. One exemplary method involves intentionally inserting zero power symbols into an optical signal stream such that those periods of time in which only zero power symbols are transmitted may be detected and compared with periods of time in which signals modulated with information including both signal and noise are detected such that the OSNR may be determined.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: December 19, 2017
    Assignee: Acacia Communications, Inc.
    Inventors: Christian Rasmussen, Mehmet Aydinlik
  • Patent number: 9838131
    Abstract: An optical communication system provides coherent optical transmission for metro applications. Relative to conventional solutions, the optical communication system can be implemented with reduced cost and can operate with reduced power consumption, while maintaining high data rate performance (e.g., 100 G). Furthermore, a programmable transceiver enables compatibility with a range of different types of optical networks having varying performance and power tradeoffs. In one embodiment, the optical communication system uses 100 Gb/s dual-polarization 16-point quadrature amplitude modulation (DP-16QAM) with non-linear pre-compensation of Indium Phosphide (InP) optics for low power consumption.
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: December 5, 2017
    Assignee: INPHI CORPORATION
    Inventors: Paul Voois, Diego Ernesto Crivelli, Ramiro Rogelio Lopez, Jorge Manuel Finochietto, Oscar Ernesto Agazzi, Nariman Yousefi, Norman L. Swenson
  • Patent number: 9819411
    Abstract: Optical signal to noise ratio within a band of interest (in-band OSNR) is calculated by using a reference signal for noise estimation. In-band noise at a node along the optical communication path is estimated by subtracting the reference signal contribution from the received in-band signal energy. Contribution from the reference signal is calculated using an effective transfer function of the optical communication path using either a direct method in which measurements are made a priori on an equivalent optical system or an indirect method in which the effective transfer function is calculated using computerized simulations. The selection of which method to use may be based on the desired resolution bandwidth for the estimation of transfer function.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: November 14, 2017
    Assignee: ZTE Corporation
    Inventors: Hung-Chang Chien, Zhensheng Jia, Jianjun Yu
  • Patent number: 9735915
    Abstract: [Objective] To make it possible to effectively relay remaining signals even when any input failure occurs on a propagation path.
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: August 15, 2017
    Assignee: NEC Corporation
    Inventor: Yoshirou Satou
  • Patent number: 9713233
    Abstract: A method for using an external lamp onboard a vehicle is provided. The method receives, at a transceiver positioned inside a sealed casing of the external lamp, a wireless communication signal and a wireless power signal; and operates the external lamp using the wireless communication signal and the wireless power signal.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: July 18, 2017
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Gregory M. Castillo, Moshe Laifenfeld
  • Patent number: 9705637
    Abstract: Techniques for guard band utilization for wireless data communication are described. In at least some embodiments, guard bands can be leveraged to transmit wireless broadband data and/or other forms of wireless data. According to one or more embodiments, signal activity in a wireless channel that is adjacent to a guard band is monitored, e.g., while the guard band is being utilized for wireless data communication. In at least some implementations, if the signal activity exceeds a signal activity threshold, usage of the guard band channel can be adjusted to mitigate interference with signal activity in an adjacent channel.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: July 11, 2017
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Amer A. Hassan, Paul W. Garnett, Paul William Alexander Mitchell
  • Patent number: 9692647
    Abstract: A method of registering or de-registering, by an optical line terminal (OLT), one or more optical network units (ONUs) in an optical communications network. The method may include: setting one or more sub-channels for registration or de-registration among two or more sub-channels, and a size of a contention window in the one or more sub-channels; transmitting, to one or more ONUs, a registration information message including information of the one or more set sub-channels and the size of the contention window; receiving, through one of the set sub-channels, a registration or de-registration request message from the one or more ONUs, which receive the registration information message; and registering and de-registering the one or more ONUs.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: June 27, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jun Seong Bang, Kyeong Hwan Doo
  • Patent number: 9688691
    Abstract: The present invention concerns the compounds of formula the N-oxide forms, the pharmaceutically acceptable addition salts and the stereochemically isomeric forms thereof, wherein Z represents NH; Y represents —C3-9alkyl-, —C1-5alkyl-NR13—C1-5alkyl-, —C1-5alkyl-NR14—CO—C1-5alkyl-, —C1-2alkyl-NR21—H2—CO—NH—C1-3alkyl- or —C1-2alkyl-NR23—CO—CR16R17—NH—; X1 represents O or —O—C1-2alkyl-; X2 represents a direct bond, C1-2alkyl, —CO—C1-2alkyl or NR12—C1-2alkyl; R1 represents hydrogen or halo; R2 represents halo, acetylene or Het1 R3 represents hydrogen or cyano; R4 represents Ar4—C1-4alkyloxy-, C1-4alkyloxy- or C1-4alkyloxy substituted with one or where possible two or more substituents selected from Het2, NR7R8, hydroxy and C1-4alkyloxy—C1-4alkyloxy-; R7 represents hydrogen or C1-4alkyl; R8 represents C1-4alkyl substituted with NR25R26 or C1-4alkylsulfonyl; R12 represents hydrogen or C1-4alkyl-; R13 represents Ar6-sulfonyl or C1-6alkyloxycarbonyl optionally substituted with phenyl; R16 and R17 represents hydr
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: June 27, 2017
    Assignee: Janssen Pharmaceutica NV
    Inventors: Eddy Jean Edgard Freyne, Marc Willems, Peter Ten Holte, Alexandra Papanikos, Werner Constant Johan Embrechts, Pierre Henri Storck, Virginie Sophie Poncelet
  • Patent number: 9628181
    Abstract: Systems and methods are disclosed that generally pertain to provisioning an optical network unit (ONU) by an optical line terminal (OLT) of a passive optical network (PON). An exemplary provisioning system includes a wireless reader incorporated into the ONU and a transponder unit attached to a fiber optic cable coupled to the ONU. The transponder unit includes a storage element in which is stored provisioning information, such a registration ID associated with the ONU. The wireless reader automatically obtains the provisioning information from the transponder when the fiber optic cable is coupled to the ONU and transmits the provisioning information to the OLT via the fiber optic cable as a part of a discovery procedure. The transmission of the provisioning information in this manner eliminates the need for a service technician to visit a customer premise and manually provide the provisioning information via a POTS port of the ONU.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: April 18, 2017
    Assignee: ADTRAN, Inc.
    Inventors: Milton Johnson, Troy Wayne White
  • Patent number: 9608722
    Abstract: The present invention discloses a method and an apparatus for measuring quality parameters of optical transmission channels. The apparatus comprises: a tunable optical filter for receiving an optical signal, performing wavelength or optical carrier demultiplexing on the optical signal, and out-of-band ASE noise suppression; an optical coherent receiver connected to the tunable optical filter, for performing polarization- and phase-diversity detection on the filtered optical signal and converting it into multiple lane baseband electrical signals; analog-to-digital converters for sampling and quantizing the multiple lane baseband electrical signals so as to convert the them into multiple lane digital signals; a digital signal processing module for processing the multiple lane digital signals to obtain quality parameters; and an display module for displaying the quality parameters.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: March 28, 2017
    Assignee: LUSTER LightWave Co., Ltd.
    Inventors: Weiqiang Liu, Yongpeng Zhao
  • Patent number: 9607412
    Abstract: A method of setting up an end-to end connection between two end-points in an optical network. A plurality of validated paths in the network are defined. Each validated path extends between a respective pair of wavelength termination points and has requisite physical resources to carry signal traffic between its pair of wavelength termination points. A graph of the network is generated. An edge of the graph corresponds with a respective validated path, and a vertex of the of the graph corresponds with at least one wavelength termination point. The graph is analyzed to compute an end-to-end path between two vertices respectively corresponding with end-points of the end-to-end connection, and the end-to-end connection set up using the computed path.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: March 28, 2017
    Assignee: Ciena Corporation
    Inventors: Frederick LaLonde, Francois Blouin, Mark Draper
  • Patent number: 9609403
    Abstract: Provided is a method of saving power in a passive optical network (PON) system including an optical line terminal (OLT) and a plurality of optical network units (ONUs), the OLT including an optical transceiver to communicate with at least one ONU through an optical line, and a controller to control the optical transceiver to transmit an upstream bandwidth map to the ONU at a predetermined transmission interval, wherein the transmission interval is determined based on a desired upstream data service delay time.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: March 28, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Geun Yong Kim, Dong Soo Lee, Sung Chang Kim, Hark Yoo, Young Suk Lee, Hee Do Kim
  • Patent number: 9596028
    Abstract: The present invention discloses a method and a controller for commissioning a wave division multiplexing optical network during capacity expansion.
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: March 14, 2017
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Jianrui Han, Mingming Xu, Lei Shi, Lin Tan
  • Patent number: 9577783
    Abstract: An optical line terminal (OLT) coupled to a plurality of optical network units (ONUs) through a passive optical network (PON). The OLT includes a transceiver configured to communicate via a management channel of a communication network with a plurality of OLTs. The communication includes sending or receiving a notification, wherein the notification includes the following: a source OLT identifier associated with a source OLT sending the notification, wherein the source OLT is configured to communicate over a first channel at a first wavelength of the PON; a destination OLT identifier associated with a destination OLT receiving the notification, wherein the destination OLT is configured to communicate over a second channel at a second wavelength of the PON; and an ONU identifier associated with a first ONU associated with the notification.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: February 21, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Yuanqiu Luo, Bo Gao, Frank Effenberger
  • Patent number: 9571201
    Abstract: A transmission apparatus includes: a module configured to receive and transmit data externally, the data received and to be transmitted being transferred via an interface internally; a framer configured to process transmission and reception of the data processed by the module; a transmission channel on which predetermined data is transmitted and received to and from the framer; and a controller configured to determine a combination of setting values for transmission and reception in accordance with a surrounding environment of the transmission channel, based on an error rate when the predetermined data is transmitted and received for each combination of setting values for transmission and reception on the transmission channel, and to perform setting for transmission and reception via the interface, based on the determined combination of setting values for transmission and reception.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: February 14, 2017
    Assignee: FUJITSU LIMITED
    Inventor: Hiroshi Iizuka
  • Patent number: 9571207
    Abstract: Digital communication systems utilizing entangled qubits are disclosed. The disclosed systems and component sending devices and receiving devices exploit selective entanglement swapping to transfer an entangled state between the sending device and the receiving device. Each device includes pairs of qubits that are independently entangled with pairs of qubits in the other device. By selectively entangling the qubits within a pair in the sending device, the qubits of the corresponding pair in the receiving device also are selectively entangled. When the qubits are entangled, they are projected onto a particular entangled state type. Though no information may be transferred through selective entanglement of one qubit pair, systems of the present disclosure determine whether a set of pairs of qubits are entangled by determining whether the distribution of pairs is a correlated or uncorrelated distribution (a probabilistic approach) and transform the distribution type to a classical bit of data.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: February 14, 2017
    Assignee: The Boeing Company
    Inventors: Shawn Michael Smith, Claudio G. Parazzoli, Barbara A. Capron, Shahriar Khosravani, Michael C. Freebery
  • Patent number: 9571189
    Abstract: An optical fiber breakage point may be located by coupling to the optical fiber an out-of-band optical test signal modulated at a periodic modulation pattern. A distance to the breakage point may be determined from a difference between modulation patterns of transmitted and received test signals.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: February 14, 2017
    Assignee: Lumentum Operations LLC
    Inventors: Yuan Lin, Brian Sungwan Kim, John Parry
  • Patent number: 9564976
    Abstract: A dual-polarization, 2-subcarriers code orthogonal, orthogonal frequency division multiplexed signal carrying information bits is transmitted in an optical communication network without transmitting a corresponding pilot tone or training sequence. A receiver receives the transmitted signal and recovers information bits using a blind equalization technique and by equalizing the 2-subcarriers OFDM signal as a 49-QAM signal in time domain with a CMMA (constant multi modulus algorithm) equalization method.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: February 7, 2017
    Assignee: ZTE Corporation
    Inventors: Jianjun Yu, Fan Li
  • Patent number: 9564965
    Abstract: A signal monitoring device, a signal transmission/reception device and a communication device, which realize easy acquisition of a diagnosis result and a signal value, and further realize fast acquisition of the diagnosis result. A signal monitoring device includes: a difference value calculator that time-sequentially calculates, for a signal to be monitored, a difference value between a signal value thereof and a previously set threshold; and a storage that updates and stores the time-sequentially calculated difference value in accordance with a previously set rule.
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: February 7, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventor: Yoshiki Wada
  • Patent number: 9515727
    Abstract: Methods and systems for in-band OSNR monitoring include a tunable optical filter to scan a passband of a desired optical channel. The optical power over the passband is measured and digitized to power waveform data. The power waveform data is processed with a digital signal processor to calculate OSNR. Additionally, various implementations accommodate dual polarization modulation formats using a parallel architecture and an alternating sequential architecture.
    Type: Grant
    Filed: March 5, 2015
    Date of Patent: December 6, 2016
    Assignee: Fujitsu Limited
    Inventors: Jeng-Yuan Yang, Youichi Akasaka, Motoyoshi Sekiya, Takuji Maeda, Hiroki Ooi, Satoru Okano
  • Patent number: 9485019
    Abstract: Methods and systems for optical channel monitoring of dual polarization optical signals may use a periodic optical filter to scan a free spectral range of the periodic optical filter. The optical signals may further be tone modulated using frequency or amplitude modulation. From a filtered signal, normalized Stokes vector signals may be generated using a polarimeter. The normalized Stokes vector signals may be digitally processed to identify center frequencies and power levels of individual optical subcarriers.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: November 1, 2016
    Assignee: Fujitsu Limited
    Inventors: Inwoong Kim, Olga Vassilieva, Motoyoshi Sekiya
  • Patent number: 9467304
    Abstract: The FC port state machine enhanced by determining if various lanes are configured to be operated in 128 Gbps mode by operating as parallel lanes as indicated by using a reserved bit in a link training field. If so and if all of the ports are 32 Gbps ports and pass training, then four lanes can be combined to form a 128 Gbps link. If the ports are configured for 128 Gbps only operation and at least one lane does not negotiate to 32 Gbps or fails training, the link is not activated and none of the lanes are activated. If the ports are configured to do either 128 Gbps or independent operation and at least one lane cannot operate at 128 Gbps, then the lanes operate independently at the negotiated and trained speed. If the lanes are configured for only independent operation the transceiver develops independent links as negotiated.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: October 11, 2016
    Assignee: Brocade Communications Systems, Inc.
    Inventors: Anil Mehta, Scott Kipp
  • Patent number: 9413470
    Abstract: Systems and methods for digital communication utilizing entangled qubits are disclosed. The disclosed systems and methods exploit selective entanglement swapping to transfer an entangled state between a sending device and a receiving device. Each device includes pairs of qubits that are independently entangled with pairs of qubits in the other device. By selectively entangling the qubits within a pair in the sending device, the qubits of the corresponding pair in the receiving device also are selectively entangled. When the qubits are entangled, they are projected onto a particular entangled state type. Though no information may be transferred through selective entanglement of one qubit pair, systems and methods of the present disclosure determine whether a set of pairs of qubits are entangled by determining whether the distribution of pairs is a correlated or uncorrelated distribution (a probabilistic approach) and transform the distribution type to a classical bit of data.
    Type: Grant
    Filed: March 9, 2015
    Date of Patent: August 9, 2016
    Assignee: The Boeing Company
    Inventors: Shawn Michael Smith, Claudio G. Parazzoli, Barbara A. Capron, Shahriar Khosravani, Michael C. Freebery
  • Patent number: 9397746
    Abstract: A technique relates to a self-calibration routine for a laser with respect to a multiplexer. Electrical power is stepped up to a filter within the laser while monitoring transmission through multiplexer to store a current and maximum recorded transmission through multiplexer until minimum operating power is reached. If the current transmission through multiplexer at minimum operating power has fallen by more than predefined amount relative to maximum recorded transmission, the electrical power is stepped up to filter until the current transmission is restored to the predefined amount of the maximum recorded transmission, determining self-calibration for a blue edge of the multiplexer pass band.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: July 19, 2016
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventor: Jason S. Orcutt
  • Patent number: 9391536
    Abstract: According to one aspect, embodiments of the invention provide a power supply system comprising an input line configured to receive input AC power, a first capacitor coupled to the input line, a second capacitor, a controller, a rectifier having an input coupled to the first capacitor and an output coupled to the second capacitor, the second capacitor further coupled to the controller, and a switch selectively coupled across the first capacitor, and configured to selectively bypass the first capacitor, wherein the controller is configured to detect a voltage across the second capacitor, operate the switch to charge the second capacitor at a first rate if the voltage is above a predetermined threshold, and operate the switch to charge the second capacitor at a second rate if the voltage is below a predetermined threshold.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: July 12, 2016
    Assignee: SCHNEIDER ELECTRIC IT CORPORATION
    Inventor: Namwook Paik
  • Patent number: 9391696
    Abstract: A technique relates to a self-calibration routine for a laser with respect to a multiplexer. Electrical power is stepped up to a filter within the laser while monitoring transmission through multiplexer to store a current and maximum recorded transmission through multiplexer until minimum operating power is reached. If the current transmission through multiplexer at minimum operating power has fallen by more than predefined amount relative to maximum recorded transmission, the electrical power is stepped up to filter until the current transmission is restored to the predefined amount of the maximum recorded transmission, determining self-calibration for a blue edge of the multiplexer pass band.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: July 12, 2016
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventor: Jason S. Orcutt
  • Patent number: 9350461
    Abstract: Systems and methods for digital communication utilizing entangled qubits are disclosed. The disclosed systems and methods exploit selective entanglement swapping to transfer an entangled state between sites. Each site includes pairs of qubits that are independently entangled with pairs of qubits at the other site. By selectively entangling the qubits within a pair at one site, the qubits of the corresponding pair at the other site also are selectively entangled. When the qubits are entangled, they are projected onto a particular entangled state type. Though no information may be transferred through selective entanglement of one qubit pair, systems and methods of the present disclosure determine whether a set of pairs of qubits are entangled by determining whether the distribution of pairs is a correlated or uncorrelated distribution (a probabilistic approach) and transform the distribution type to a classical bit of data.
    Type: Grant
    Filed: March 9, 2015
    Date of Patent: May 24, 2016
    Assignee: The Boeing Company
    Inventors: Shawn Michael Smith, Claudio G. Parazzoli, Barbara A. Capron, Shahriar Khosravani, Michael C. Freebery