公开(公告)号：US20150093111A1

公开(公告)日：2015-04-02

申请号：US14504639

申请日：2014-10-02

Applicant: NEC Laboratories America, Inc.

Inventor： Ting Wang ,  Ryuji Aida ,  Philip Ji

IPC: 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 signals from the first trunk terminal and the second trunk terminal into three or more sections. Signals may be received from a branch terminal by one or more branching units using a single branch fiber pair, and the signals from the branch terminals may be divided into three or more groups of optical channels, wherein at least e of the channels 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干线端子和第二干线端子的信号分成三个或更多个部分来防止广播，从而进行安全的信息传递。 可以通过使用单个分支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三组或更多组光信道，其中至少e个信道包括伪光 。 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：US20150071636A1

公开(公告)日：2015-03-12

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: 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：US08917998B2

公开(公告)日：2014-12-23

申请号：US13649161

申请日：2012-10-11

Applicant: NEC Laboratories America, Inc.

Inventor： Shaoliang Zhang ,  Lei Xu ,  Junqiang Hu ,  Fatih Yaman ,  Ting Wang ,  Yoshihisa Inada ,  Takaaki Ogata ,  Yasuhiro Aoki

IPC: H04B10/04 ,  H04B10/12 ,  H04B10/50 ,  H04J14/06 ,  H04B10/556

CPC classification number: H04B10/5055 ,  H04B10/5561 ,  H04J14/06

Abstract: A method implemented in a transmission apparatus used in an optical fiber communications system for a polarization switched differential quaternary phase-shift keying (DQPSK) signal is disclosed. The method comprises splitting data into two or more data streams, inputting said two or more data streams to 1-bit DQPSK precoders to perform 1-bit DQPSK precoding, and multiplexing inphase outputs of the 1-bit DQPSK precoders to generate a first output; and multiplexing quadrature outputs of the 1-bit DQPSK precoders to generate a second output. Other methods, apparatuses, and systems also are disclosed.

Abstract translation: 公开了一种在用于偏振切换差分四相移键控（DQPSK）信号的光纤通信系统中使用的发送装置中实现的方法。 该方法包括将数据分成两个或更多个数据流，将所述两个或多个数据流输入到1比特DQPSK预编码器以执行1比特DQPSK预编码，以及复用1比特DQPSK预编码器的同相输出以产生第一输出; 以及复用1位DQPSK预编码器的正交输出以产生第二输出。 还公开了其它方法，装置和系统。

公开(公告)号：US08880985B2

公开(公告)日：2014-11-04

申请号：US13646470

申请日：2012-10-05

Applicant: NEC Laboratories America, Inc.

Inventor： Junqiang Hu ,  Lei Xu ,  Ting Wang

IPC: H03M13/03 ,  H03M13/13 ,  H03M13/11

CPC classification number: H03M13/13 ,  H03M13/1117 ,  H03M13/1137 ,  H03M13/1145 ,  H03M13/116

Abstract: A Quasi-Cyclic, LDPC, large girth, soft-decision decoder and accompanying methods.

Abstract translation: 准循环，LDPC，大环，软判决解码器及其附带的方法。

公开(公告)号：US08873958B2

公开(公告)日：2014-10-28

申请号：US13628320

申请日：2012-09-27

Applicant: NEC Laboratories America, Inc.

Inventor： Jingjing Zhang ,  Ting Wang ,  Naoto Maeda

IPC: H04J14/02 ,  H04Q11/00 ,  H04L12/12

CPC classification number: H04L12/12 ,  H04Q11/0067 ,  H04Q2011/0079 ,  Y02D50/40 ,  Y02D50/42

Abstract: A method sets certain downstream traffic scheduling rules at an optical line terminal OLT and certain sleep control rules at optical network units ONUs. Both downstream traffic scheduling rules and sleep control rules are common information owned by both the OLT and ONUs. The method sets the traffic scheduling rules that each ONU is allocated with some time slots every cycle if the ONU has downstream traffic. Rather than using a control message to notify ONUs with their queue status, the method lets ONUs infer whether its downstream queue is empty or not based on downstream traffic scheduling and lets the OLT infer the status of an ONU based on sleep control rules.

Abstract translation: 一种方法在光线路终端OLT设置某些下行流量调度规则，并在光网络单元ONU设置某些睡眠控制规则。 下行流量调度规则和睡眠控制规则都是OLT和ONU拥有的常用信息。 如果ONU具有下行流量，则该方法每个周期设置每个ONU分配了一些时隙的流量调度规则。 该方法不是使用控制消息通知其具有队列状态的ONU，而是使ONU根据下游业务调度来推断其下行队列是否为空，并允许OLT根据睡眠控制规则来推断ONU的状态。

公开(公告)号：US20140147120A1

公开(公告)日：2014-05-29

申请号：US14085000

申请日：2013-11-20

Applicant: NEC Laboratories America, Inc.

Inventor： Ankitkumar N. Patel ,  Philip Nan Ji ,  Ting Wang

IPC: H04J14/02

CPC classification number: H04J14/0238 ,  H04J14/0257 ,  H04J14/0267 ,  H04L45/16

Abstract: The present invention is directed to a solution for grooming multicast traffic in flexible optical wavelength division multiplexing WDM networks. The invention includes a solution for grooming multicast traffic in flexible optical wavelength division multiplexing networks into a solving a multicast routing sub-problem, solving a a grooming sub-problem; and solving a wavelength assignment and spectrum allocation sub-problem.

Abstract translation: 本发明涉及一种用于在柔性光波分复用WDM网络中整理组播业务的解决方案。 本发明包括将柔性光波分复用网络中的组播流量整理为解决组播路由子问题，解决梳理子问题的解决方案; 并解决波长分配和频谱分配子问题。

公开(公告)号：US20130259174A1

公开(公告)日：2013-10-03

申请号：US13855168

申请日：2013-04-02

Applicant: NEC LABORATORIES AMERICA, INC.

Inventor： Dayou Qian ,  Ting Wang

IPC: H04L7/00

CPC classification number: H04L7/0079 ,  H04B10/6165 ,  H04B2210/075 ,  H04L27/223 ,  H04L27/2272 ,  H04L27/26 ,  H04L27/2657 ,  H04L27/2671 ,  H04L27/2675 ,  H04L27/2697 ,  H04L2027/0026

Abstract: A method for phase noise mitigation for a coherent receiver in either an OFDM or single carrier based transmission system including applying a frequency offset and coarse phase noise compensation based on a radio frequency RF tone or using a phase lock loop PLL m-th power procedure, responsive to a signal from a digital signal processed transmission with an added pilots signal over an optical system, applying fine phase noise compensation based on comparison of the pilots signal in a time domain, removing the pilots, and demodulating the remaining pilotless signal.

Abstract translation: 一种用于在基于OFDM或单载波的传输系统中的相干接收机的相位噪声减轻的方法，包括基于射频RF频调应用频偏和粗相位噪声补偿或使用锁相环PLL第m个功率过程， 响应来自具有在光学系统上添加的导频信号的数字信号处理的传输的信号，基于时域中的导频信号的比较，去除导频以及解调剩余的无引导信号来应用精细相位噪声补偿。

公开(公告)号：US20130148963A1

公开(公告)日：2013-06-13

申请号：US13712465

申请日：2012-12-12

Applicant: NEC Laboratories America, Inc.

Inventor： Milorad Cvijetic ,  Ivan B. Djordjevic ,  Neda Cvijetic ,  Ting Wang

IPC: H04J14/04

CPC classification number: H04J14/04 ,  H04B10/2581 ,  H04B10/532 ,  H04B10/548

Abstract: An optical network includes a multidimensional coder and modulator for handling multiple-in-multiple-out MIMO spatial lightpath properties and content of any specific supercarrier, a spatial mode multiplexer responsive to orthogonal frequency division multiplexing OFDM transmissions and the multidimensional coder, a spatial-spectral routing node coupled over a fiber link to the spatial mode multiplexer for performing switching granularity by a spatial mode reconnection, a multidimensional decoder and demodulator; and a spatial mode demultiplexer coupled over a fiber link to the spatial-spectral routing node and responsive to the multidimensional decoder and demodulator.

Abstract translation: 光网络包括用于处理多重多输出MIMO空间光路特性和任何特定超载波的内容的多维编码器和调制器，响应于正交频分复用OFDM传输的空间模式多路复用器和多维编码器，空间光谱 通过光纤链路耦合到空间模式多路复用器的路由节点，用于通过空间模式重新连接来执行交换粒度;多维解码器和解调器; 以及空间模式解复用器，其通过光纤链路耦合到空间光谱路由节点并响应于多维解码器和解调器。

公开(公告)号：US12160261B2

公开(公告)日：2024-12-03

申请号：US18075374

申请日：2022-12-05

Applicant: NEC Laboratories America, Inc.

Inventor： Philip Ji ,  Ting Wang ,  Zilong Ye

IPC: H04B10/032 ,  H04J14/02

Abstract: Aspects of the present disclosure describe distributed fiber optic sensor systems, methods, and structures that advantageously enable/provide for the proper placement/assignment of sensors in the DFOS network to provide for high reliability, fault tolerant operation that survives multiple fiber failures.

公开(公告)号：US12106664B2

公开(公告)日：2024-10-01

申请号：US17968265

申请日：2022-10-18

Applicant: NEC Laboratories America, Inc.

Inventor： Yangmin Ding ,  Yue Tian ,  Sarper Ozharar ,  Ting Wang

IPC: G08G1/04 ,  G01V1/00 ,  G01V1/22 ,  G01V1/30 ,  G08G1/01

CPC classification number: G08G1/04 ,  G01V1/001 ,  G01V1/226 ,  G01V1/30 ,  G08G1/0104

Abstract: Aspects of the present disclosure describe dynamic road traffic noise mapping using DFOS over a telecommunications network that enables mapping of road traffic-induced noise at any observer location. DFOS is used to obtain instant traffic data including vehicle speed, volume, and vehicle types, based on vibration and acoustic signal along the length of a sensing fiber along with location information. A sound pressure level at a point of interest is determined, and traffic data associated with such point is incorporated into a reference noise emission database and a wave propagation theory for total sound pressure level prediction and mapping. Real-time wind speed using DFOS—such as distributed acoustic sensing (DAS)—is obtained to provide sound pressure adjustment due to the wind speed.