公开(公告)号：US09813158B2

公开(公告)日：2017-11-07

申请号：US15131307

申请日：2016-04-18

Applicant: NEC Laboratories America, Inc.

Inventor： Giovanni Milione ,  Ezra Ip ,  Ting Wang

IPC: H04B10/00 ,  H04B10/2581 ,  H04Q11/00 ,  H04B10/50 ,  H04B10/40 ,  H04B10/516 ,  H04J14/00

CPC classification number: H04B10/2581 ,  H04B10/40 ,  H04B10/503 ,  H04B10/516 ,  H04J14/00 ,  H04Q11/0005 ,  H04Q2011/0015

Abstract: Methods and system for transmitting data includes converting multiple optical beams to distinct respective spatial modes. Data is modulated onto each of the optical beams. The optical beams are combined into a single transmission beam. The transmission beam is launched onto a multimode optical fiber having an elliptical core.

公开(公告)号：US20170211937A1

公开(公告)日：2017-07-27

申请号：US15403615

申请日：2017-01-11

Applicant: NEC Laboratories America, Inc.

Inventor： Junqiang Hu ,  Ting Wang

IPC: G01C21/00 ,  G01S5/02 ,  G01C21/20

CPC classification number: G01C21/005 ,  G01C21/206 ,  G01S5/0289 ,  G01S5/14 ,  G01S13/89 ,  G01S15/89 ,  G01S17/89

Abstract: An in-door positioning system for a building includes three or more external positioning devices (EPDs), wherein the EPD is capable of calculating the distance between each other; a floor plan module with a floor plan map of the building, for a building level of interest; and relative positions of the EPDs; and an indoor positioning device positioned at a predetermined distance to each of the EPDs.

公开(公告)号：US20170199093A1

公开(公告)日：2017-07-13

申请号：US14957592

申请日：2015-12-02

Applicant: NEC Laboratories America, Inc.

Inventor： Ting Wang ,  Yi Weng

IPC: G01L1/24 ,  G01D5/353 ,  G01K11/32 ,  G02B6/34 ,  G02B6/32

CPC classification number: G01L1/246 ,  G01D5/35316 ,  G01K11/3206 ,  G02B6/02133 ,  G02B6/02138 ,  G02B6/32 ,  G02B6/34

Abstract: A sensor system includes a femtosecond infrared (fs-IR) laser to generate a laser beam; a reflecting mirror optically receiving the laser beam; a lens optically coupled to the reflecting mirror to focus the laser beam; a phase mask receiving the laser beam from the lens to generate an index modulated pattern; and a few-mode fiber (FMF) receiving the index modulated pattern.

公开(公告)号：US09654246B2

公开(公告)日：2017-05-16

申请号：US14938771

申请日：2015-11-11

Applicant: NEC Laboratories America, Inc.

Inventor： Philip Nan Ji ,  Ryuji Aida ,  Ting Wang

IPC: H04J14/02

CPC classification number: H04J14/0212 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0216 ,  H04J14/0221

Abstract: A reconfigurable optical add/drop multiplexer (ROADM) unit includes a first optical circulator coupled to a first terminal; a second optical circulator coupled to a second terminal; a third optical circulator coupled to a third terminal; a fourth optical circulator coupled to a fourth terminal; a first wavelength-selective switch (WSS), coupled to the first, second, and third optical circulators; a second WSS coupled to the first, second, and fourth optical circulators, wherein the first and second WSSes are bidirectional operated; a first 1:2 coupler positioned between the first circulator and the first and second WSSes; a second 1:2 coupler positioned between the second circulator and the first and second WSSes.

公开(公告)号：US09479446B2

公开(公告)日：2016-10-25

申请号：US14479398

申请日：2014-09-08

Applicant: NEC Laboratories America, Inc.

Inventor： Junqiang Hu ,  Konstantinos Kanonakis ,  Ting Wang ,  Philip Ji

IPC: H04J3/16 ,  H04J14/00 ,  H04L12/825 ,  H04B10/40 ,  H04Q11/00 ,  H04L12/815

CPC classification number: H04L47/25 ,  H04B10/40 ,  H04L47/225 ,  H04Q11/0062 ,  H04Q2011/0086

Abstract: Methods and systems for variable rate control include determining a new communications rate in response to measured data traffic patterns. A receive change message is transmitted to a receiver that triggers the receiver to wait for an end of transmission (EoT) message and to set a new communications rate. A transmit change message is transmitted to a transmitter that triggers the transmitter to send the EoT message to the receiver, to set the new communications rate, and to send a start of transmission (SoT) message to the receiver before resuming data communications.

Abstract translation: 用于可变速率控制的方法和系统包括响应于测量的数据业务模式来确定新的通信速率。 接收改变消息被发送到触发接收机等待传输结束（EoT）消息并设置新的通信速率的接收机。 发送改变消息被发送到发射机，触发发射机向接收机发送EoT消息，设置新的通信速率，并在恢复数据通信之前向接收机发送开始的发送（SoT）消息。

公开(公告)号：US20160301367A1

公开(公告)日：2016-10-13

申请号：US15089987

申请日：2016-04-04

Applicant: NEC Laboratories America, Inc.

Inventor： Junqiang Hu ,  Ting Wang

IPC: H03F1/26 ,  G01N21/39

CPC classification number: G01N21/39 ,  G01J3/28 ,  G01J3/4338 ,  G01J2001/4242 ,  G01N2201/06113 ,  G01N2201/12

Abstract: A gas sensing system includes a signal generator including a wavelength tunable laser, the signal generator providing a first periodic signal and a second periodic signal, wherein the first periodic signal comprises a wavelength scanning signal and the second periodic signal comprises a modulation signal; an optical signal absorption path which is wavelength selective, wherein the generated signal covers at least one of the absorbance band; a signal detector that uses lock-in detection to detect a second harmonic of the second periodic signal after absorption, the signal detector further including a local reference generator, a multiplier, and a low pass filter; a local reference includes a first path (ref1) that outputs sinusoidal signal with frequency equals to that of the second signal in signal generator, and a second path (ref2) that outputs sinusoidal signal of two times ref1 frequency; and a local reference generator having a first phase shifter that is configurable from 0 to 2π and a second phase shifter that shifts 90-degree, wherein the first phase shifter is for an alignment of ref1 with the modulation signal and the second phase shifter provides 90-degree shifts for ref2 from ref1, wherein the first and second paths (ref1 and ref2) are selected by a switch, wherein the switch uses the first path during initialization and the second path for normal operation.

Abstract translation: 气体感测系统包括信号发生器，其包括波长可调谐激光器，信号发生器提供第一周期信号和第二周期信号，其中第一周期信号包括波长扫描信号，第二周期信号包括调制信号; 一种波长选择性的光信号吸收路径，其中产生的信号覆盖吸收带中的至少一个; 信号检测器，其使用锁定检测来检测吸收之后的第二周期信号的二次谐波，所述信号检测器还包括本地参考发生器，乘法器和低通滤波器; 本地参考包括输出频率等于信号发生器中的第二信号的正弦信号的第一路径（ref1）和输出两倍ref1频率的正弦信号的第二路径（ref2）; 以及具有可配置为0至2π的第一移相器和90度移位的第二移相器的本地参考发生器，其中第一移相器用于ref1与调制信号的对准，而第二移相器提供90 ref2从ref1进行偏移，其中第一和第二路径（ref1和ref2）由开关选择，其中开关在初始化期间使用第一路径，并且第二路径用于正常操作。

公开(公告)号：US09450805B2

公开(公告)日：2016-09-20

申请号：US14044177

申请日：2013-10-02

Applicant: NEC Laboratories America, Inc.

Inventor： Neda Cvijetic ,  Ankitkumar Patel ,  Philip Nan Ji ,  Ting Wang ,  Maria Ioanna Angelou

IPC: G06F15/173 ,  H04L12/24 ,  H04L12/721 ,  H04L12/717

CPC classification number: H04L41/00 ,  H04L41/022 ,  H04L41/04 ,  H04L41/044 ,  H04L41/12 ,  H04L45/38 ,  H04L45/42

Abstract: A generic centralized, software-defined networking configuration for connecting network is defined as a generic multi-layer topology network entities interconnected either vertically or horizontally regardless of the employed network topology/graph). This centralized configuration enables establishment of a connection between any two networking entities by 1) bypassing intermediate protocol layers and 2) eliminating any handshaking between peer elements of the same layer. The centralized software-defined controller notifies in parallel all involved network entities along a connection path to take all necessary actions (i.e. reconfiguration) to establish the new connection. The centralized controller has authority to control only entities that are software-defined SD.

Abstract translation: 用于连接网络的通用集中式软件定义网络配置被定义为垂直或水平互连的通用多层拓扑网络实体，而不管采用的网络拓扑/图形如何）。 这种集中式配置可以通过以下方式建立任何两个组网实体之间的连接：1）绕过中间协议层，2）消除同一层的对等体元素之间的任何握手。 集中式软件定义的控制器并行地通过连接路径并行地通知所有涉及的网络实体，以采取所有必要的动作（即重新配置）来建立新的连接。 集中控制器具有仅控制软件定义SD的实体的权限。

公开(公告)号：US20160234753A1

公开(公告)日：2016-08-11

申请号：US15132702

申请日：2016-04-19

Applicant: AT&T Intellectual Property I, L.P. ,  NEC Laboratories America, Inc.

Inventor： Lusheng Ji ,  Chonggang Wang ,  Ting Wang

IPC: H04W40/12

CPC classification number: H04L47/32 ,  H04L12/56 ,  H04L43/08 ,  H04L47/11 ,  H04L47/24 ,  H04L47/35 ,  H04W40/12 ,  H04W84/18 ,  Y02D70/00 ,  Y02D70/22 ,  Y02D70/34

Abstract: Data is routed in a mesh network of devices that can communicate wirelessly through a plurality of technologies. One or more of such devices receive broadcast message(s) from a destination device intended to receive the data, and generate a first radio link quality metric (RLQM) value based on the broadcast message(s). A source device originates and delivers a quantum of data with an embedded first RLQM value. A set of intermediate devices relays the quantum of data if a forwarding criterion is fulfilled; the forwarding criterion is based in part on the first RLQM value and a second RLQM value generated by an intermediate device in the set of intermediate devices based on the broadcast message(s). The intermediate device exploits an optical interface to transmit the quantum of data. The destination device broadcasts an acknowledgement signal in response to receiving intended data.

公开(公告)号：US09414134B2

公开(公告)日：2016-08-09

申请号：US14504597

申请日：2014-10-02

Applicant: NEC Laboratories America, Inc.

Inventor： Ting Wang ,  Ryuji Aida ,  Philip Ji

IPC: H04J14/02 ,  H04B10/00 ,  H04Q11/00 ,  H04B10/80

CPC classification number: H04Q11/0005 ,  H04B10/80 ,  H04J14/0205 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0221 ,  H04Q11/0062 ,  H04Q2011/0037

Abstract: Systems and methods for method for data transport using secure reconfigurable branching units, including receiving signals from a first trunk terminal and a second trunk terminal by branching units. Broadcasting is prevented for secure information delivery by dividing, within the branching units, the one or more signals from the first trunk terminal and the second trunk terminal into two or more sections, and sending the two or more sections to an optical coupler. Signals may be received from a branch terminal by one or more branching units using two fiber pairs, and the signals from the branch terminals may be divided into two or more groups of optical sections, wherein one of the sections includes dummy light. The divided signals from the first trunk terminal, the second trunk terminal, and dummy light from the branch terminal may be merged, and the merged signal sent to the branch terminal.

Abstract translation: 使用安全可重配置分支单元的数据传输方法的系统和方法，包括通过分支单元从第一中继线端子和第二干线端子接收信号。 通过在分支单元内将来自第一中继线端子和第二干线端子的一个或多个信号分成两个或更多个部分，并将两个或更多个部分发送到光耦合器，防止了安全信息传送的广播。 可以通过使用两个光纤对的一个或多个分支单元从分支终端接收信号，并且来自分支终端的信号可以被划分为两组或更多组光学部分，其中一个部分包括虚拟光。 来自第一中继线端子，第二干线端子和来自分支端子的虚拟光的分频信号可以被合并，并且合并信号被发送到分支终端。

公开(公告)号：US20160146937A1

公开(公告)日：2016-05-26

申请号：US14946304

申请日：2015-11-19

Applicant: NEC Laboratories America, Inc.

Inventor： Giovanni Milione ,  Neda Cvijetic ,  Ting Wang

IPC: G01S17/02 ,  G01S7/481

CPC classification number: G01S7/4818 ,  G01J4/04 ,  G01S7/4802 ,  G01S7/4814 ,  G01S7/4816 ,  G01S7/499

Abstract: A system and method for remote object sensing which features a spatially polarization-inhomogeneous light beam that is directed on the remote object. A polarimetry receiver receives the light beam after it contacts the remote object. The changes in the spatially polarization-inhomogeneous light beam from contacting the remote object are a result of spatial features of the remote object. The polarimetry receiver is configured to measure the spatially inhomogeneous electric field of the light beam after it contacts the remote object and compute the changes in the spatially polarization-inhomogeneous light beam in order to detect spatial features of the remote object. The system obtains high-resolution, real-time information concerning important spatial features of the remote object.

Abstract translation: 一种用于远程物体感测的系统和方法，其特征在于朝向远程物体的空间偏振不均匀光束。 偏光镜接收器在接触到远程物体之后接收光束。 与远程物体接触的空间极化不均匀光束的变化是远程物体的空间特征的结果。 偏振接收器被配置为在光束接触到远程物体之后测量光束的空间不均匀电场，并计算空间偏振不均匀光束中的变化，以便检测远程物体的空间特征。 该系统获得关于远程物体重要空间特征的高分辨率实时信息。