公开(公告)号：US09813922B2

公开(公告)日：2017-11-07

申请号：US14812580

申请日：2015-07-29

Applicant: NEC Laboratories America, Inc.

Inventor： Narayan Prasad ,  Vaibhav Singh ,  Sampath Rangarajan

IPC: H04W24/02 ,  H04W28/02 ,  H04L12/891 ,  H04W72/04

CPC classification number: H04W24/02 ,  H04L47/41 ,  H04W28/02 ,  H04W72/0446

Abstract: A system and method for resource management in a heterogeneous wireless network wherein the resources of the mobile communications system are managed on a coarse time-scale and a fine time-scale. The coarse time-scale management comprises a first stage of determining the user association for each of the plurality of TPs followed by a second stage of determining activation fractions for all TPs. The determining of the user association is performed by utilizing a GLS procedure having a Greedy Stage and a Local Search Stage. In the Greedy Stage, new user, TP pairs are analyzed and the pair with the greatest improvement in system utility is selected. In the Local Search Stage, potential swaps are analyzed and a pair offering the greatest improvement that exceeds a threshold is selected. The determining of activation fractions for all TPs is performed by utilizing an auxiliary function method.

公开(公告)号：US09813157B2

公开(公告)日：2017-11-07

申请号：US15062179

申请日：2016-03-06

Applicant: NEC Laboratories America, Inc.

Inventor： Shaoling Zhang ,  Fatih Yaman ,  Yue-Kai Huang ,  Ezra Ip ,  Yoshihisa Inada

IPC: H04B10/00 ,  H04B10/2581 ,  H04L25/03 ,  H04B10/2543 ,  H04B10/69

CPC classification number: H04B10/2581 ,  H04B10/2543 ,  H04B10/6971 ,  H04L25/03885

Abstract: Aspects of the present disclosure are directed to the mitigation of multi-path interference from quasi-single-mode fiber using hybrid span configuration and digital signal processing wherein a hybrid span of quasi-single mode fibers and single-mode fibers are used to configure the hybrid span. Additional aspects are directed to introducing a low-baud rate sub-banding signal to reduce the number of DD-LMS taps required when compensating the multi-path interference as the low-baud rate signal requires fewer taps to cover a given range of MPI as compared to a high-baud rate signal. Finally further aspects are directed to an ALMS equalizer which further reduces the number of equalizer taps by shifting its center tap towards the right if higher-order modes transmit slower than a fundamental mode, otherwise the center tap is shifted to the left.

公开(公告)号：US20170317498A1

公开(公告)日：2017-11-02

申请号：US15489805

申请日：2017-04-18

Applicant: NEC Laboratories America, Inc.

Inventor： Feng Guo ,  Ratnesh Sharma

IPC: H02J3/38 ,  G05B15/02 ,  H02J3/46 ,  H02J13/00

CPC classification number: H02J13/0006 ,  G05B15/02 ,  H02J3/12 ,  H02J3/18 ,  H02J3/382 ,  H02J3/50 ,  H02J2003/007 ,  Y02E40/30 ,  Y02E40/72 ,  Y02E60/76 ,  Y04S10/123 ,  Y04S40/22

Abstract: A computer-implemented method for controlling voltage fluctuations of a microgrid including a plurality of distributed generators (DGs) is presented. The computer-implemented method includes collecting, by a resiliency controller including at least a voltage control module, measurement data from the microgrid, using, by a reactive power estimator, reactive power estimations to calculate an amount of reactive power for each of the DGs, and using a dynamic droop control unit to distribute the reactive power to each of the DGs of the microgrid.

公开(公告)号：US20170294091A1

公开(公告)日：2017-10-12

申请号：US15479430

申请日：2017-04-05

Applicant: NEC Laboratories America, Inc.

Inventor： Renqiang Min ,  Yang Gao ,  Eric Cosatto

IPC: G08B13/196 ,  G06N3/04 ,  G06K9/62 ,  H04N5/77 ,  G06K9/00 ,  H04N7/18

CPC classification number: G06K9/00711 ,  G06K9/4628 ,  G06K9/6274 ,  G06K2009/00738 ,  G06N3/0427 ,  G06N3/0445 ,  G06N3/0454 ,  G06N3/08 ,  G06N5/045 ,  G08B13/19613 ,  G08B13/19695 ,  H04N5/77 ,  H04N7/183

Abstract: A video monitoring system and method are provided. The video monitoring system includes a camera. The camera is positioned to monitor an area and capture live video to provide a live video stream. The video monitoring system also includes a security processing system. The security processing system includes a processor and memory coupled to the processor. The security processing system is programmed to detect and identify a target action sequence in the live video stream using a multi-layer deep long short-term memory process on are attention factor that is based on an within-frame attention and an between-frame attention. The security processing system is further programmed to trigger an action to alert that a target action sequence has been detected.

公开(公告)号：US09785130B2

公开(公告)日：2017-10-10

申请号：US14681027

申请日：2015-04-07

Applicant: NEC Laboratories America, Inc.

Inventor： Ali Hooshmand ,  Ratnesh Sharma

IPC: H02J3/46 ,  G05B15/02 ,  G06Q50/06 ,  H02J3/12 ,  H02J3/38 ,  H02J7/34

CPC classification number: G05B15/02 ,  G05B2219/2639 ,  G06Q10/04 ,  G06Q10/063 ,  G06Q50/06 ,  H02J3/12 ,  H02J3/382 ,  H02J7/34 ,  H02J2003/003 ,  Y04S10/54

Abstract: A method for power management includes applying a decentralized control to manage a large-scale community-level energy system; obtaining a global optimal solution satisfying constraints between the agents representing the energy system's devices as a state-based potential game with a multi-agent framework; independently optimizing each agent's output power while considering operational constraints and assuring a pure Nash equilibrium (NE), wherein a state space helps coordinating the agents' behavior in energy system to deal with system-wide constraints including supply demand balance, battery charging power constraint and satisfy system-wide and device-level (local) operational constraints; and controlling distributed generations (DGs) and storage devices using the agent's output.

公开(公告)号：US20170256004A1

公开(公告)日：2017-09-07

申请号：US15416810

申请日：2017-01-26

Applicant: NEC Laboratories America, Inc.

Inventor： Ali Hooshmand ,  Seyyed Ali Pourmousavi Kani ,  Ratnesh Sharma ,  Shankar Mohan

IPC: G06Q50/06 ,  G06F1/26 ,  G05B15/02

CPC classification number: G06Q50/06 ,  G05B15/02 ,  G06F1/263 ,  H02J7/00

Abstract: A system and method are provided. The system includes a processor. The processor is configured to receive power related data relating to power usage of power consuming devices at a customer site from a plurality of sources. The processor is further configured to generate object function inputs from the power related data. The processor is additionally configured to apply the generated object function inputs to an objective function to determine an optimal capacity for a battery storage system powering the power consuming devices at the customer site while minimizing a daily operational power cost for the power consuming devices at the customer site. The processor is also configured to initiate an act to control use of one or more batteries of the battery storage system in accordance with the optimal capacity for the battery storage system.

公开(公告)号：US09753511B2

公开(公告)日：2017-09-05

申请号：US14555022

申请日：2014-11-26

Applicant: NEC Laboratories America, Inc.

Inventor： Yanzhu Ye ,  Ratnesh Sharma

IPC: G06F19/00 ,  G06F1/26 ,  G06N7/02 ,  G05B13/02 ,  H02J1/10 ,  H02J7/34 ,  H02J7/35 ,  G06F1/32

CPC classification number: G06F1/263 ,  G05B13/0275 ,  G06F1/3212 ,  G06N7/02 ,  H02J1/10 ,  H02J7/345 ,  H02J7/35

Abstract: A method of managing power between the multiple components of a hybrid electrical energy storage system (HESS) that includes providing at least two power storage elements, and at least one renewable power source. The method further includes managing the power flow among the at least two power storage elements with a fuzzy logic controller. The fuzzy logic controller uses a hardware processor that is configured to increase or decrease current to each of the at least two power storage elements using a fuzzy rule base that is dependent upon at least one of a state of charge for each of the at least two power storage elements, and a requested power demand of the hybrid electrical storage system.

公开(公告)号：US20170235626A1

公开(公告)日：2017-08-17

申请号：US15351449

申请日：2016-11-15

Applicant: NEC Laboratories America, Inc.

Inventor： Kai Zhang ,  Jianwu Xu ,  Hui Zhang ,  Guofei Jiang

IPC: G06F11/07 ,  G06N7/00 ,  G06N5/04

CPC classification number: G06F11/0775 ,  G06F11/0709 ,  G06F11/0751 ,  G06F11/079 ,  G06F11/3452 ,  G06F2201/83 ,  G06F2201/86 ,  G06N5/04 ,  G06N7/00

Abstract: An exemplary method for detecting one or more anomalies in a system includes building a temporal causality graph describing functional relationship among local components in normal period; applying the causality graph as a propagation template to predict a system status by iteratively applying current system event signatures; and detecting the one or more anomalies of the system by examining related patterns on the template causality graph that specifies normal system behaviors. The system can aligning event patterns on the causality graph to determine an anomaly score.

公开(公告)号：US09735863B2

公开(公告)日：2017-08-15

申请号：US14504423

申请日：2014-10-02

Applicant: NEC Laboratories America, Inc.

Inventor： Neda Cvijetic ,  Ming Zhu

IPC: H04B10/00 ,  H04B7/26 ,  H04W56/00

CPC classification number: H04B7/2665 ,  H04W56/001

Abstract: A communication system includes an OFDMA transmitter (Tx) at an optical line terminal (OLT) generating an OFDMA signal by assigning orthogonal subcarriers to different cell sites through digital logic, an electrical multiplexer combining the electrical OFDMA signal with two electrical clock signals, and an optical intensity modulator intensity-modulating the resulting joint electrical OFDMA+clocks signal; an optical multiplexer receiving aggregate OFDMA signals on multiple wavelengths with tight DWDM λ-spacing; a remote node (RN) receiving the OFDMA signals, such that each wavelength is distributed by a de-multiplexer (Demux) to designated general small cell area, to which cell sites are connected by optical splitters; and an optical network unit (ONU) to directly photodetect and digitize received OFDMA signal, wherein downstream (DS) information for each cell is digitally extracted and prepared for wireless radio frequency (RF) transmission over an air interface, and an electrical splitter and bandpass filters to separate the OFDMA and clock signals for DSP-free clock recovery.

公开(公告)号：US20170229881A1

公开(公告)日：2017-08-10

申请号：US15363876

申请日：2016-11-29

Applicant: NEC Laboratories America, Inc.

Inventor： Seyyed Ali Pourmousavi Kani ,  Babak Asghari ,  Ratnesh Sharma

IPC: H02J7/00 ,  H01M10/44

CPC classification number: H02J7/0068 ,  H01M10/44 ,  H02J3/32 ,  H02J3/382 ,  H02J7/0057 ,  Y02E70/30

Abstract: Computer-implemented methods and, a system are provided. A method includes constructing by an Energy Management System (EMS), one or more optimization-based techniques for resilient battery charging based on an optimization problem having an EMS cost-based objective function. The one or more optimization-based techniques are constructed to include a battery degradation metric in the optimization problem. The method further includes charging, by the EMS, one or more batteries in a power system in accordance with the one or more optimization-based techniques.