公开(公告)号：US09002195B2

公开(公告)日：2015-04-07

申请号：US13628572

申请日：2012-09-27

Applicant: NEC Laboratories America, Inc.

Inventor： Junqiang Hu ,  Philip Nan Ji ,  Ting Wang ,  Yoshiaki Aono

IPC: H04B10/00 ,  H04B10/038 ,  H04B10/032

CPC classification number: H04B10/038 ,  H04B10/032

Abstract: In an optical communication system containing a primary line and backup line card, a method includes providing interfaces for the primary and backup line card, each line card including a transmitter and receiver; and selecting output from the transmitter from either the primary or back up line card including selecting the backup line card when the primary line card encounters a failure.

Abstract translation: 在包含主线路和备用线路卡的光通信系统中，一种方法包括提供用于主线路和备用线路卡的接口，每个线路卡包括发射机和接收机; 以及从主或备用线卡选择发射机的输出，包括当主线卡遇到故障时选择备用线路卡。

公开(公告)号：US20150055664A1

公开(公告)日：2015-02-26

申请号：US14465122

申请日：2014-08-21

Applicant: NEC Laboratories America, Inc.

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

IPC: H04B10/27 ,  H04B10/50 ,  H04B10/60 ,  H04B10/40

CPC classification number: H04Q11/00 ,  H04L12/40136 ,  H04Q2213/13103 ,  H04Q2213/13292 ,  H04Q2213/13389 ,  Y02D50/10

Abstract: Systems and methods for data transport, including receiving one or more signals into a reconfigurable and flexible rate shared rate multi-transponder network architecture, wherein the network architecture includes one or more transponders with multiple line side interfaces and one or more client side interfaces. The transponders are configured to map one or more signals to multiple parallel Virtual Ethernet Links, remove idle characters from the one or more signals, buffer one or more blocks of characters using an intermediate block buffer, activate and deactivate one or more portions of input/output electrical lanes of an Ethernet module, multiplex and demultiplex the one or more signals to and from the input/output electrical lanes to enable sharing of a single optical transceiver by multiple independent signals, and insert blocks of idle characters to enable transmission over a lower rate transmission pipe.

Abstract translation: 用于数据传输的系统和方法，包括将一个或多个信号接收到可重配置和灵活的速率共享速率多应答器网络架构中，其中所述网络架构包括具有多个线路侧接口和一个或多个客户机侧接口的一个或多个转发器。 应答器被配置为将一个或多个信号映射到多个并行虚拟以太网链路，从一个或多个信号中去除空闲字符，使用中间块缓冲器缓冲一个或多个字符块，激活和去激活输入/ 以太网模块的输出电气通道，将一个或多个信号复用到多路复用并从输入/输出电路解复用，以使得能够通过多个独立信号共享单个光收发器，并插入空闲字符块以使得能够在较低的 速率传输管。

公开(公告)号：US20150043927A1

公开(公告)日：2015-02-12

申请号：US14457460

申请日：2014-08-12

Applicant: NEC Laboratories America, Inc.

Inventor： Junqiang Hu ,  Ting Wang ,  Lei Xu

IPC: H04B10/61

CPC classification number: H04B10/613 ,  H04B10/612 ,  H04B10/614

Abstract: A method for reducing optical components at a receiver which include converting an input signal at a receiver to include an interleaving of alternate signal diversity components, the signal diversity components including phase diversity when the converting includes 0 and 90 degree interleaving and the signal diversity components include polarization diversity interleaving when the converting includes interleaved orthogonal polarizations, and combining the signal diversity components for enabling a single photo detection at the receiver to detect the alternative signal diversity components for subsequent analog-to-digital conversion.

Abstract translation: 一种用于减少接收机处的光学部件的方法，包括在接收机处转换输入信号以包括交替的信号分集分量的交织，所述信号分集分量包括当转换包括0和90度交织时的相位分集，并且信号分集分量包括 当转换包括交错的正交偏振时，偏振分集交错，以及组合信号分集分量，以使接收机处的单次光检测能够检测用于随后的模数转换的备选信号分集分量。

公开(公告)号：US20140379927A1

公开(公告)日：2014-12-25

申请号：US14312610

申请日：2014-06-23

Applicant: NEC Laboratories America, Inc.

Inventor： Ankitkumar Patel ,  Philip Ji ,  Ting Wang

IPC: H04L12/911

CPC classification number: H04J14/0227 ,  G06F9/46 ,  H04L41/0896 ,  H04L45/12 ,  H04L67/10

Abstract: A method for solving a cloud embedding problem includes first mapping virtual links over physical links followed by virtual nodes over physical nodes. The inventive method entails an efficient procedure, namely network followed by compute load balancing (NCLB), that first maps virtual links over physical links while balancing network resources, and finally, maps virtual nodes over physical nodes while balancing different types of computational resources.

Abstract translation: 解决云嵌入问题的方法包括首先通过物理链路跟踪物理节点之后的虚拟节点映射虚拟链路。 本发明的方法需要有效的过程，即网络，然后是计算负载平衡（NCLB），其首先在物理链路上映射虚拟链路，同时平衡网络资源，最后，通过物理节点映射虚拟节点，同时平衡不同类型的计算资源。

公开(公告)号：US20140365835A1

公开(公告)日：2014-12-11

申请号：US14293570

申请日：2014-06-02

Applicant: NEC Laboratories America, Inc.

Inventor： Junqiang Hu ,  Ting Wang ,  Sadaichiro Ogushi

IPC: G06F11/07

CPC classification number: G06F11/076 ,  G06F7/58 ,  G06F11/0745

Abstract: The invention uses a PRBS pattern generated by transmitter (serializer) as training At the receiver side, following receiver outputs, a synchronous capturing module is used to capture multiple lanes simultaneously. The captured data is used to calculate the PRBS distance for different lanes. After the distances are obtained, the one with largest latency is used as a reference, to calculate the relative latency with each other lane. This relative latency is further used to calculate the number of shifts for Barrel Shifter and word shifter.

Abstract translation: 本发明使用由发射机（串行器）生成的PRBS模式作为训练在接收机侧，在接收机输出之后，同步捕获模块用于同时捕获多个通道。 捕获的数据用于计算不同车道的PRBS距离。 在获得距离之后，将具有最大延迟的一个作为参考，以计算每个其他车道的相对等待时间。 进一步使用这种相对延迟来计算桶式移位器和字移位器的移位数。

公开(公告)号：US08874987B2

公开(公告)日：2014-10-28

申请号：US13646454

申请日：2012-10-05

Applicant: NEC Laboratories America, Inc.

Inventor： Ivan B. Djordjevic ,  Lei Xu ,  Ting Wang

IPC: H03M13/00 ,  H04L1/00 ,  H03M13/11 ,  H03M13/25 ,  H04J14/06 ,  H03M13/39 ,  H03M13/29

CPC classification number: H04L1/0057 ,  H03M13/116 ,  H03M13/255 ,  H03M13/2957 ,  H03M13/3905 ,  H03M13/3972 ,  H03M13/6331 ,  H04J14/06 ,  H04L1/0003

Abstract: Systems and methods for data transport, comprising encoding one or more streams of input data with one or more low density parity check (LDPC) encoders, corresponding to one or more polarization/spatial mode branches. One or more encoded data streams are mapped to symbols, wherein the mapper is configured to assign bits of the symbols to a signal constellation and to associate the bits of the symbols with signal constellation points. A signal constellation is formulated which minimizes a mean-square error of the signal constellation representing the source. The optimum signal constellation size is adjusted to improve transmission quality by adjusting the signal constellation an optical signal to noise ratio (OSNR), wherein the signal constellation is selected using a look-up table (LUT); and the symbols are modulated in accordance with the output of the mapper onto a transmission medium.

Abstract translation: 用于数据传输的系统和方法，包括对应于一个或多个极化/空间模式分支，用一个或多个低密度奇偶校验（LDPC）编码器编码一个或多个输入数据流。 将一个或多个编码数据流映射到符号，其中映射器被配置为将符号的位分配给信号星座并将符号的位与信号星座点相关联。 配置信号星座，其最小化表示源的信号星座的均方误差。 调整最佳信号星座大小以通过调整信号星座图的光信噪比（OSNR）来提高传输质​​量，其中使用查找表（LUT）来选择信号星座; 并且根据映射器的输出将符号调制到传输介质上。

公开(公告)号：US20140301733A1

公开(公告)日：2014-10-09

申请号：US14244253

申请日：2014-04-03

Applicant: NEC Laboratories America, Inc.

Inventor： Junqiang Hu ,  Ting Wang

IPC: H04B10/079 ,  H04J14/08 ,  H04B10/40

CPC classification number: H04B10/0795 ,  H04B10/0793 ,  H04B10/40 ,  H04J14/08 ,  H04Q11/0062 ,  H04Q2011/0086

Abstract: There are provided an optical transponder having a first end and a second end, as well as an electric switch having the transponder. The transponder includes an optical interface, at the first end, having a variable rate optical transmitter and a variable rate optical receiver to respectively transmit and receive signals using at least one of different bandwidths and different bit rates. The transponder further includes an electrical interface, at the second end, having an electrical interface throughput matching an optical capacity of the optical interface. The transponder also includes a processor for controlling the optical capacity.

Abstract translation: 提供了具有第一端和第二端的光学应答器，以及具有应答器的电开关。 应答器包括光接口，其在第一端具有可变速率光发射机和可变速率光接收机，以使用不同带宽和不同比特率中的至少一个分别发射和接收信号。 应答器还包括电接口，在第二端具有与光学接口的光学容量匹配的电接口吞吐量。 应答器还包括用于控制光学容量的处理器。

公开(公告)号：US20140241720A1

公开(公告)日：2014-08-28

申请号：US14188671

申请日：2014-02-24

Applicant: NEC Laboratories America, Inc.

Inventor： Philip Nan Ji ,  Ting Wang ,  Ryuji Aida

IPC: H04Q11/00

CPC classification number: H04Q11/0066 ,  H04Q11/0005 ,  H04Q2011/0032 ,  H04Q2201/804 ,  H04Q2213/013 ,  H04Q2213/13003 ,  H04Q2213/1301

Abstract: A submarine network includes a submarine network with a branching unit BU for splitting or combining a signal between a main trunk path and a branch path for allowing signals from different paths to share a same fiber optic path, said BU and submarine network normally having a fixed and predetermined wavelength arrangement preventing reconfigurability of the submarine network, and a latching wavelength selective switch WSS or wavelength blocker WB in the branching unit for splitting or combining the signals between the main trunk path and branch path to enable a latching capability and enable reconfigurability of the branching unit BU, the latching WSSS being a bistable liquid crystal based material without moving parts for increased stability and lower power consumption over use of conventional mono-stable liquid crystal LC switches in a submarine network.

Abstract translation: 潜艇网络包括具有分支单元BU的海底网络，用于分裂或组合主干道路径和分支路径之间的信号，以允许来自不同路径的信号共享相同的光纤路径，所述BU和海底网络通常具有固定的 以及防止海底网络的可重新配置的预定波长布置，以及分支单元中的锁存波长选择开关WSS或波长阻挡器WB，用于分裂或组合主干道和分支路径之间的信号，以实现锁存能力并使得能够实现 分支单元BU，锁定WSSS是基于双稳态液晶的材料，没有移动部件，用于增加稳定性，并且在潜艇网络中使用常规单稳态液晶LC开关的功耗更低。

公开(公告)号：US20140212135A1

公开(公告)日：2014-07-31

申请号：US14166350

申请日：2014-01-28

Applicant: NEC Laboratories America, Inc.

Inventor： Philip Nan Ji ,  Ting Wang

IPC: H04Q11/00 ,  H04B7/04 ,  H04L27/26

CPC classification number: H04Q11/0066 ,  H04J14/0267 ,  H04L5/0008 ,  H04L5/0023 ,  H04L5/0028 ,  H04L27/2601 ,  H04L27/2697 ,  H04L49/356 ,  H04Q11/0005 ,  H04Q2011/0032 ,  H04Q2213/13291

Abstract: A communication system enabling a switching procedure for a multiple-input multiple-output orthogonal frequency division multiplexing (MIMO OFDM) based flexible rate intra-data center network DCN, includes a MIMO OFDM DCN with optical burst switching OBS capability, an optical burst switching OBS procedure for influencing the MIMO OFDM DCN, and a centralized control configuration coupled to the MIMO OFDM DCN and enabling a software defined network SDN configuration in the communication system.

Abstract translation: 一种能够实现基于多输入多输出正交频分复用（MIMO OFDM）的灵活率数据中心网络DCN的切换过程的通信系统包括具有光突发交换OBS能力的MIMO OFDM DCN，光突发交换OBS 影响MIMO OFDM DCN的过程，以及耦合到MIMO OFDM DCN的集中式控制配置，并且在通信系统中实现软件定义的网络SDN配置。

公开(公告)号：US20140205286A1

公开(公告)日：2014-07-24

申请号：US14155518

申请日：2014-01-15

Applicant: NEC Laboratories America, Inc.

Inventor： Philip Nan Ji ,  Ting Wang ,  Yoshiaki Aono

IPC: H04Q11/00

CPC classification number: H04B10/40 ,  H04B10/506 ,  H04J14/0298 ,  H04Q11/0005 ,  H04Q2011/0016

Abstract: An optical transceiver including a multi-direction variable transmitter including multiple outputs with different subcarriers being directed to different ones of the outputs to go to different directions in a network, and a multi-direction variable receiver for receiving multiple inputs thereby enabling transmission direction in a network with the transceiver at subcarrier granularity and avoiding entire super-channel granularity and enabling unused subcarriers to be utilized for traffic in other directions or destinations and making switching granularity finer for flexibility in the network.

Abstract translation: 一种包括具有不同子载波的多个输出的多方向可变发射机的光收发器被引导到不同的输出端以进入网络中的不同方向;以及多方向可变接收机，用于接收多个输入，从而使能在 网络与收发器在子载波粒度和避免整个超频道粒度，并使未使用的子载波可用于其他方向或目的地的业务，并使交换粒度更好的网络灵活性。