公开(公告)号：US20130216229A1

公开(公告)日：2013-08-22

申请号：US13755627

申请日：2013-01-31

Applicant: NEC Laboratories America, Inc.

Inventor： Neda Cvijetic ,  Milorad Cvijetic ,  Ting Wang

IPC: H04B10/2575

CPC classification number: H04B10/25753 ,  H04B10/25754

Abstract: Systems and methods are provided for network communication using wireless base stations and an optical orthogonal frequency division multiple access (OFDMA) signal generated on an optical wavelength, with the optical OFDMA signal being composed of a plurality of OFDMA subcarriers. A multi-level modulator modulates each of the plurality of OFDMA subcarriers. A single optical wavelength propagates each of the plurality of OFDMA subcarriers to different base stations; a passive optical splitter delivers the optical OFDMA signal to different base stations; and an OFDMA subcarrier de-multiplexer delivers and extracts traffic for each of the base stations in an electronic-domain, wherein the extracted traffic is remodulated in a wireless signal format. Antennas at each of the base stations transmit wireless signals, and the wireless signals are recovered and processed from the base stations.

Abstract translation: 提供了使用无线基站的网络通信和在光波长上生成的光学正交频分多址（OFDMA）信号的系统和方法，其中OFDMA信号由多个OFDMA子载波组成。 多电平调制器调制多个OFDMA子载波中的每一个。 单个光波长将多个OFDMA子载波中的每一个传播到不同的基站; 无源光分路器将光OFDMA信号传送到不同的基站; 并且OFDMA子载波去复用器在电子域中传送和提取每个基站的业务，其中所提取的业务以无线信号格式被重新调制。 每个基站的天线发送无线信号，并且从基站恢复和处理无线信号。

公开(公告)号：US20130209035A1

公开(公告)日：2013-08-15

申请号：US13668193

申请日：2012-11-02

Applicant: NEC Laboratories America, Inc.

Inventor： Fatih Yaman ,  Eduardo Mateo ,  Lei Xu ,  Shaoliang Zhang ,  Ting Wang

IPC: G02B6/34

CPC classification number: G02B6/34 ,  G02B6/29319 ,  G02B6/29394

Abstract: Systems and methods are disclosed for enhancing optical communication by performing dispersion compensation in an optical fiber using a fiber Bragg grating (FBG); and providing increased degrees of freedoms (DOFs) to distinguish forward and backward propagating fields with a passive component.

Abstract translation: 公开了通过使用光纤布拉格光栅（FBG）在光纤中执行色散补偿来增强光通信的系统和方法; 并提供增加的自由度（DOF）来区分带有被动元件的前向和后向传播场。

公开(公告)号：US08503878B2

公开(公告)日：2013-08-06

申请号：US12700979

申请日：2010-02-05

Applicant: Chonggang Wang ,  Wei Wei ,  Ting Wang

Inventor： Chonggang Wang ,  Wei Wei ,  Ting Wang

IPC: H04J14/00

CPC classification number: H04L5/0007 ,  H04J14/0298 ,  H04L5/0044 ,  H04L5/0064 ,  H04L45/00 ,  H04L45/28 ,  H04L45/306

Abstract: Each of a plurality of data flows is classified as having a respective data flow type, and each data flow is assigned to one of a plurality of subcarrier groups, based on the data flow's type, wherein each subcarrier group comprises a respective plurality of subcarriers. First data flows assigned to a first subcarrier group are transmitted exclusively on respective subcarriers in the first subcarrier group, and second data flows assigned to a second subcarrier group are transmitted together on all of the subcarriers in the second subcarrier group.

Abstract translation: 多个数据流中的每一个被分类为具有各自的数据流类型，并且基于数据流的类型将每个数据流分配给多个子载波组中的一个，其中每个子载波组包括相应的多个子载波。 分配给第一子载波组的第一数据流在第一子载波组中的各个子载波上专门发送，并且分配给第二副载波组的第二数据流在第二子载波组中的所有子载波上一起发送。

公开(公告)号：US20130185419A1

公开(公告)日：2013-07-18

申请号：US13554632

申请日：2012-07-20

Applicant: Yueping Zhang ,  Vishal Singh ,  Ye Wang ,  Guofei Jiang

Inventor： Yueping Zhang ,  Vishal Singh ,  Ye Wang ,  Guofei Jiang

IPC: H04L12/26

CPC classification number: H04L43/04 ,  H04L41/142 ,  H04L43/045 ,  H04L43/08 ,  H04L43/0858 ,  H04L67/36

Abstract: A method for determining the state of an entire network, including state of applications and infrastructure includes receiving network control messages in an OpenFlow network, passing normal network control messages through OFSense, a control plane middleware, and constructing from the network control messages an application level connectivity graph to infer network delay between any two communicating server in the network and estimating an application response time of a given server in the network; and providing state of the network for enabling intelligent detection and diagnosis of infrastructure and application performance.

Abstract translation: 一种用于确定整个网络的状态的方法，包括应用和基础设施的状态包括在OpenFlow网络中接收网络控制消息，通过OFSense传递正常网络控制消息，控制平面中间件，以及从网络控制消息构建应用级别 连接图，以推断网络中任何两个通信服务器之间的网络延迟，并估计网络中给定服务器的应用程序响应时间; 并提供网络的状态，以实现基础设施和应用程序性能的智能检测和诊断。

公开(公告)号：US08488498B2

公开(公告)日：2013-07-16

申请号：US12859453

申请日：2010-08-19

Applicant: Guosen Yue ,  Xiadong Wang

Inventor： Guosen Yue ,  Xiadong Wang

IPC: H04B7/00

CPC classification number: H04L1/1867 ,  H04L1/0041 ,  H04L1/009 ,  H04L2001/0093

Abstract: A method for the retransmission and coding of multicast broadcast services.

Abstract translation: 一种多播广播服务的重传和编码方法。

公开(公告)号：US20130170826A1

公开(公告)日：2013-07-04

申请号：US13644238

申请日：2012-10-03

Applicant: NEC LABORATORIES AMERICA, INC.

Inventor： Neda Cvijetic ,  Konstantinos Kanonakis ,  Jingjing Zhang

IPC: H04B10/27

CPC classification number: H04B10/27 ,  H04B10/272 ,  H04Q11/0067 ,  H04Q2011/0064

Abstract: A method for small scale time increased bandwidth assignment to increase optical network unit ONU downstream energy efficiency includes splitting of downstream scheduling cycles into multiple rounds, using selective ones of the multiple rounds as probing rounds and other than said selective ones of the multiple rounds as fixed rounds, the probing rounds and fixed rounds being cooperatively selected for energy efficiency without limitations in length of the downstream scheduling cycles.

Abstract translation: 小规模时间的方法增加带宽分配以增加光网络单元ONU下行能量效率包括将下游调度周期分成多个回合，使用多轮中的选择一个作为探测循环，而不是多个循环中的所选择的一个作为固定的 合并选择能量效率的探测轮和固定轮，而不受下游调度周期长度的限制。

公开(公告)号：US20130170825A1

公开(公告)日：2013-07-04

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: H04B10/038

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：US20130170445A1

公开(公告)日：2013-07-04

申请号：US13617991

申请日：2012-09-14

Applicant: Mohammad A. Khojastepour ,  Xiaodong Wang ,  Mohammad Madihian

Inventor： Mohammad A. Khojastepour ,  Xiaodong Wang ,  Mohammad Madihian

IPC: H04W72/04

CPC classification number: H04W72/042 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0465 ,  H04B7/0626 ,  H04B7/0639 ,  H04L1/0001 ,  H04L1/06

Abstract: A method implemented in a base station used for a downlink multi-user (MU) multi-input multi-output (MIMO) system is disclosed. The method includes receiving an indication of a quantized matrix from each of a plurality of scheduled user equipments, precoding data streams for the plurality of scheduled user equipments, transmitting the precoded data to the plurality of scheduled user equipments. Other methods and some apparatuses for wireless communications also are disclosed.

公开(公告)号：US20130170422A1

公开(公告)日：2013-07-04

申请号：US13621293

申请日：2012-09-17

Applicant: Narayan Prasad ,  Hao Zhu ,  Sampath Rangarajan

Inventor： Narayan Prasad ,  Hao Zhu ,  Sampath Rangarajan

IPC: H04W4/06

CPC classification number: H04W4/06

Abstract: A method for a transmit precoder for multicast communication over a downlink in a wireless network, including: initializing a transmit precoder, a channel estimate for each user in the wireless network; updating for each user a receive filter and a slack matrix; updating the transmit precoder by solving a second order cone routine solvable in closed form; determining if a predetermined convergence is met; and outputting the updated transmit precoder responsive to the convergence criteria.

Abstract translation: 一种用于无线网络中的下行链路上的组播通信的发送预编码器的方法，包括：初始化发送预编码器，针对无线网络中的每个用户的信道估计; 为每个用户更新接收过滤器和松弛矩阵; 通过解决封闭形式可解的二阶锥体程序来更新传输预编码器; 确定是否满足预定的会聚; 以及响应于所述收敛标准输出所述更新的发送预编码器。

公开(公告)号：US20130166043A1

公开(公告)日：2013-06-27

申请号：US13646645

申请日：2012-10-05

Applicant: Mohammad Chehreghani Bozchalui ,  Ratnesh Sharma

Inventor： Mohammad Chehreghani Bozchalui ,  Ratnesh Sharma

IPC: G05B13/04

CPC classification number: G05B19/042 ,  G05B13/04 ,  G05B17/02 ,  G05B2219/25289

Abstract: Systems and methods are disclosed to improve energy efficiency of a farm with livestock wastes by generating a cooling, heating, and power (CCHP) microgrid model; performing on a computer a multi-objective optimization to improve system efficiency of energy utilization and reduce environmental problems caused by animal wastes; and displaying results of the optimization for review.

Abstract translation: 公开了系统和方法，以通过产生冷却，加热和功率（CCHP）微电网模型来提高具有家畜废物的农场的能量效率; 在计算机上进行多目标优化，提高能源利用的系统效率，减少动物废物造成的环境问题; 并显示优化结果进行审查。