公开(公告)号：US20160261344A1

公开(公告)日：2016-09-08

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: H04B10/2507 ,  H04B10/2581 ,  H04L25/03

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.

Abstract translation: 本公开的方面涉及使用混合跨度配置和数字信号处理来缓解来自准单模光纤的多径干扰，其中使用准单模光纤和单模光纤的混合跨度来配置 混合跨度 另外的方面是引入低波特率子带信号来减少在补偿多路径干扰时所需的DD-LMS抽头的数量，因为低波特率信号需要更少的抽头来覆盖给定的MPI范围作为 与高波特率信号相比。 最后，还有一些方面针对ALMS均衡器，如果高阶模式的传输速度比基本模式慢，则通过将其中心抽头向右移动来进一步减少均衡器抽头的数量，否则中心抽头向左移位。

公开(公告)号：US09420359B2

公开(公告)日：2016-08-16

申请号：US14184787

申请日：2014-02-20

Applicant: NEC Laboratories America, Inc.

Inventor： Neda Cvijetic ,  Philip Nan Ji ,  Ting Wang ,  Akihiro Tanaka

IPC: H04Q11/00 ,  H04J14/02

CPC classification number: H04Q11/0067 ,  H04J14/0224 ,  H04J14/0267 ,  H04Q2011/0086

Abstract: A network apparatus used in an optical network is disclosed. The network apparatus includes one or more first tunable and temperature controlled (TTC) lasers, one or more transmitters each of which is connected to one of said one or more TTC lasers, one or more second TTC lasers, one or more digital signal processing (DSP) transponders (TPNDs) each of which is connected to one of said one or more second TTC lasers, one or more receivers, and a controller to control said one or more transmitters and said one or more DSP TPNDs, wherein said one or more transmitters defragment an optical access spectrum, and said one or more DSP TPNDs exploit a newly available spectrum. Other apparatuses, systems, and methods also are disclosed.

Abstract translation: 公开了一种在光网络中使用的网络设备。 网络设备包括一个或多个第一可调谐和温度控制（TTC）激光器，一个或多个发射器，每个发射器连接到所述一个或多个TTC激光器之一，一个或多个第二TTC激光器，一个或多个数字信号处理 DSP）转发器（TPND），每个转发器（TPND）连接到所述一个或多个第二TTC激光器之一，一个或多个接收器，以及控制器，用于控制所述一个或多个发射机和所述一个或多个DSP TPND，其中所述一个或多个 发射机对光接入频谱进行碎片整理，并且所述一个或多个DSP TPND利用新可用频谱。 还公开了其他装置，系统和方法。

公开(公告)号：US20160198954A1

公开(公告)日：2016-07-14

申请号：US14979034

申请日：2015-12-22

Applicant: NEC Laboratories America, Inc.

Inventor： Ting Wang ,  Yi Weng

IPC: A61B5/00

CPC classification number: A61B5/0095 ,  A61B5/7285 ,  A61B2576/00

Abstract: A method and system for remote sensing. The method includes applying an orbital angular momentum (OAM) mode on a light beam to generate an OAM light beam having an optical OAM spectrum, exposing a target object to the OAM light beam such that the target object absorbs energy of the OAM light beam to generate ultrasonic emissions, the ultrasonic emissions having a reflected OAM spectrum associated with the target object, and generating a high resolution image of the target object based on the reflected OAM spectrum.

Abstract translation: 一种用于遥感的方法和系统。 该方法包括在光束上应用轨道角动量（OAM）模式以产生具有光学OAM光谱的OAM光束，将目标物体暴露于OAM光束，使得目标物体将OAM光束的能量吸收到 产生超声波发射，超声发射具有与目标物体相关联的反射OAM光谱，并且基于反射的OAM光谱产生目标物体的高分辨率图像。

公开(公告)号：US09385899B2

公开(公告)日：2016-07-05

申请号：US14204838

申请日：2014-03-11

Applicant: NEC Laboratories America, Inc.

Inventor： Narayan Prasad ,  Guosen Yue ,  Mohammad Khojastepour ,  Sampath Rangarajan

IPC: H04B7/04 ,  H04L25/03 ,  H04B7/06 ,  H04L1/06

CPC classification number: H04B7/0469 ,  H04B7/0456 ,  H04B7/0478 ,  H04B7/0486 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0641 ,  H04B7/065 ,  H04L1/06 ,  H04L25/0391 ,  H04L27/20

Abstract: A method implemented in a base station used in a wireless communications system is disclosed. The method comprises having 1-layer, 2-layer, 3-layer, and 4-layer codebooks for 4 transmit antenna (4TX) transmission, each codebook including a plurality of precoding matrices, precoding data with one of the plurality of precoding matrices, and transmitting, to a user equipment, the precoded data, wherein each of the 1-layer and 2-layer codebooks comprises a first codebook and a second codebook, and wherein each precoding matrix in the first codebook comprises a first index and a second index. Other apparatuses, systems, and methods also are disclosed.

Abstract translation: 公开了一种在无线通信系统中使用的基站中实现的方法。 该方法包括具有用于4个发送天线（4TX）传输的1层，2层，3层和4层码本，每个码本包括多个预编码矩阵，具有多个预编码矩阵之一的预编码数据， 以及向所述用户设备发送所述预编码数据，其中所述1层和2层码本中的每一个包括第一码本和第二码本，并且其中所述第一码本中的每个预编码矩阵包括第一索引和第二索引 。 还公开了其他装置，系统和方法。

公开(公告)号：US20160191168A1

公开(公告)日：2016-06-30

申请号：US14934078

申请日：2015-11-05

Applicant: NEC Laboratories America, Inc.

Inventor： Yue-Kai Huang ,  Shaoliang Zhang ,  Fatih Yaman ,  Ting Wang

IPC: H04B10/532 ,  H04B10/2575 ,  H04Q11/00

CPC classification number: H04Q11/0001 ,  H04B10/516 ,  H04B10/613 ,  H04B10/616 ,  H04B10/6166 ,  H04J14/0298

Abstract: Systems and methods are disclosed for data communication by performing RF sub-band multiplexing and demultiplexing by cascading a radio-frequency (RF) mixing module and optical dual-polarized (DP) QPSK modulator forhybrid RF/optical IQ modulation; and performing intra-transceiver optical superchannel switching through the RF sub-band multiplexing.

Abstract translation: 公开了通过级联射频（RF）混合模块和用于混合RF /光学IQ调制的光学双极化（DP）QPSK调制器进行RF子带复用和解复用的数据通信系统和方法; 以及通过RF子带复用执行收发器内的光学超频道切换。

公开(公告)号：US09369409B2

公开(公告)日：2016-06-14

申请号：US14307573

申请日：2014-06-18

Applicant: NEC Laboratories America, Inc.

Inventor： Junqiang Hu ,  Yoshinobu Ooto ,  Kazuo Takagi ,  Yoshiaki Aono ,  Ting Wang

IPC: H04L12/939 ,  H04L12/721 ,  H04L12/735 ,  H04L12/703 ,  H04L12/723 ,  H04L12/801

CPC classification number: H04L49/557 ,  H04L45/1283 ,  H04L45/28 ,  H04L45/50 ,  H04L45/68 ,  H04L45/70 ,  H04L47/34

Abstract: A method and system are described for providing hitless protection in a packet switched network having source nodes and destination nodes. The method includes enabling a working path and a protecting path between the source and destination nodes. The working path is non-overlapping with respect to the protecting path. The method further includes replicating traffic in a given one of the source nodes to generate replicated traffic. The method also includes forwarding the traffic and the replicated traffic through a working path and a protecting path, respectively, from the given one of the source nodes to a particular one of the destination nodes. The method additionally includes delivering a hitless-protected service in the particular one of the destination nodes by selecting traffic packets received from either the working path or the protecting path.

Abstract translation: 描述了一种用于在具有源节点和目的地节点的分组交换网络中提供无中断保护的方法和系统。 该方法包括启用源节点和目的节点之间的工作路径和保护路径。 工作路径与保护路径不重叠。 该方法还包括在给定的一个源节点中复制业务以生成复制业务。 该方法还包括将业务和复制的业务分别通过工作路径和保护路径转发到从给定的一个源节点到目标节点的特定一个。 该方法还包括通过选择从工作路径或保护路径接收到的业务分组来递送目标节点中的特定一个节点中的无受保护的服务。

公开(公告)号：US09369391B2

公开(公告)日：2016-06-14

申请号：US14220837

申请日：2014-03-20

Applicant: NEC Laboratories America, Inc.

Inventor： Rajesh Mahindra ,  Sampath Rangarajan ,  Honghai Zhang

IPC: H04L12/801 ,  H04L12/853 ,  H04L12/851 ,  H04L12/841 ,  H04L12/823

CPC classification number: H04L47/19 ,  H04L47/2416 ,  H04L47/2433 ,  H04L47/283 ,  H04L47/32

Abstract: Methods and systems for data flow control include establishing a first connection between a gateway and a network client responsive to a connection request from the network client; establishing a second connection between the gateway and a server specified by the connection request; determining a user class for the network client based on a level of network congestion detected at the gateway based on throughput and round-trip-time delays; modifying a data flow received at the gateway on the second connection to remove data from the flow based on the determined user class of the network client; and transmitting the modified data flow to the network client via the first connection.

Abstract translation: 用于数据流控制的方法和系统包括响应于来自网络客户端的连接请求建立网关与网络客户端之间的第一连接; 建立网关与由连接请求指定的服务器之间的第二连接; 基于吞吐量和往返时间延迟，基于在网关处检测到的网络拥塞的级别来确定网络客户端的用户类别; 修改在第二连接处在网关处接收的数据流，以基于所确定的网络客户端的用户类别从流中移除数据; 以及经由所述第一连接将修改的数据流发送到所述网络客户端。

公开(公告)号：US09367366B2

公开(公告)日：2016-06-14

申请号：US14504434

申请日：2014-10-02

Applicant: NEC Laboratories America, Inc.

Inventor： Pengchong Xiong ,  Vahit Hakan Hacigumus ,  Xin He

IPC: G06F9/45 ,  G06F9/52

CPC classification number: G06F9/52 ,  G06F8/433 ,  G06F8/443 ,  G06F8/445 ,  G06F9/5066 ,  H04L45/24 ,  H04L45/64 ,  H04L67/101

Abstract: A system includes a task scheduler that works collaboratively with a flow scheduler; a network-aware task scheduler based on software-defined network, the task scheduler scheduling tasks according to available network bandwidth.

Abstract translation: 系统包括与流程调度程序协同工作的任务调度器; 基于软件定义网络的网络感知任务调度器，任务调度器根据可用网络带宽调度任务。

公开(公告)号：US20160149661A1

公开(公告)日：2016-05-26

申请号：US14934708

申请日：2015-11-06

Applicant: NEC Laboratories America, Inc.

Inventor： Yue-Kai Huang ,  Shaoliang Zhang

IPC: H04J14/00 ,  H04J14/08 ,  H04B1/7073

CPC classification number: H04B1/7073 ,  H04B10/616 ,  H04J14/02

Abstract: Systems and methods are disclosed for receiving data by radio frequency (RF) mixing to down-convert in-phase and quadrature parts of a photo-detected electrical RF band signal to baseband for data conversion; controlling a mixing phase of a electrical local oscillator (LO) at one or more RF mixing modules; selecting one of the RF sub-bands to be down-converted to baseband after coherent photo-detection; and performing RF sub-band de-multiplexing for ultra-wide band optical digital coherent detection.

Abstract translation: 公开了用于通过射频（RF）混合接收数据的系统和方法，以将光检测的电RF频带信号的同相和正交部分下变频到基带用于数据转换; 控制在一个或多个RF混合模块处的本机振荡器（LO）的混合阶段; 在相干光检测之后选择要被下变频到基带的RF子带中的一个; 并对超宽带光数字相干检测进行RF子带解复用。

公开(公告)号：US09344950B2

公开(公告)日：2016-05-17

申请号：US14589643

申请日：2015-01-05

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

Inventor： Lusheng Ji ,  Chonggang Wang ,  Ting Wang

IPC: H04W40/12 ,  H04L12/801 ,  H04L12/823 ,  H04L12/54 ,  H04W84/18

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.

Abstract translation: 数据在可以通过多种技术无线通信的设备的网状网络中路由。 一个或多个这样的设备从旨在接收数据的目的地设备接收广播消息，并且基于广播消息生成第一无线电链路质量度量（RLQM）值。 源设备产生并传递具有嵌入的第一RLQM值的数据量。 如果满足转发标准，则一组中间设备中继数据量; 所述转发标准部分地基于所述第一RLQM值和由所述中间设备集合中的中间设备基于所述广播消息生成的第二RLQM值。 中间设备利用光接口传输数据量。 目的地设备响应于接收到预期数据广播确认信号。