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：US20130237239A1

公开(公告)日：2013-09-12

申请号：US13787985

申请日：2013-03-07

Applicant: NEC LABORATORIES AMERICA, INC.

Inventor： Rajesh Mahindra ,  Mohammad A. Khojastepour ,  Sampath Rangarajan ,  Honghai Zhang

IPC: H04W16/14

CPC classification number: H04W16/14 ,  H04W16/10

Abstract: A method implemented in an apparatus used in a radio access network (RAN) sharing system including a plurality of basestations is disclosed. The method includes estimating resource requirement or demand of one or more entities in each base station according to feedback from the plurality of basestations, computing resource allocation for said one or more entities, and enforcing the computed resource allocation using basestation-level virtualization. Other methods, apparatuses, and systems also are disclosed.

Abstract translation: 公开了一种在包括多个基站的无线电接入网络（RAN）共享系统中使用的装置中实现的方法。 该方法包括根据来自多个基站的反馈来估计每个基站中的一个或多个实体的资源需求或需求，计算所述一个或多个实体的资源分配，以及使用基站级虚拟化来执行所计算的资源分配。 还公开了其它方法，装置和系统。

公开(公告)号：US20130208977A1

公开(公告)日：2013-08-15

申请号：US13668188

申请日：2012-11-02

Applicant: NEC Laboratories America, Inc.

Inventor： Yangqing Jia ,  Chang Huang

IPC: G06K9/62

CPC classification number: G06K9/6256 ,  G06K2009/4695

Abstract: Systems and methods are disclosed for image classification by receiving an overcomplete set of spatial regions, jointly optimizing the classifier and the pooling region for each pooled feature; and performing incremental feature selection and retraining using a grafting process to efficiently train the classifier.

Abstract translation: 公开了用于图像分类的系统和方法，其通过接收空间区域的不完整集合，联合优化每个合并特征的分类器和汇集区域; 并使用移植过程执行增量特征选择和再培训，以有效地训练分类器。

公开(公告)号：US20130176852A1

公开(公告)日：2013-07-11

申请号：US13736146

申请日：2013-01-08

Applicant: NEC LABORATORIES AMERICA, INC.

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

IPC: H04L12/56

CPC classification number: H04L47/12 ,  H04L43/026 ,  H04L43/16 ,  H04L47/2441 ,  H04L47/41 ,  H04L63/1425 ,  Y02D50/30

Abstract: A device used in a network is disclosed. The device includes a network monitor to monitor a network state and to collect statistics for flows going through the network, a flow aggregation unit to aggregate flows into clusters and identify flows that can cause a network problem, and an adaptive control unit to adaptively regulate the identified flow according to network feedback. Other methods and systems also are disclosed.

Abstract translation: 公开了一种在网络中使用的设备。 该设备包括网络监视器，用于监控网络状态并收集通过网络的流量的统计信息;流量聚合单元，用于将流聚集成群集，识别可能导致网络问题的流;以及自适应控制单元， 根据网络反馈确定流量。 还公开了其它方法和系统。

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：US20130091495A1

公开(公告)日：2013-04-11

申请号：US13646390

申请日：2012-10-05

Applicant: NEC Laboratories America, Inc.

Inventor： Pranav Garg ,  Franjo Ivancic ,  Gogul Balakrishnan ,  Naoto Maeda ,  Aarti Gupta

IPC: G06F9/44

CPC classification number: G06F11/3684

Abstract: Methods and systems for generating software analysis test inputs include generating a path query to cover a target branch of a program by executing a symbolic test driver concretely and partially symbolically, where at least one symbolic expression is partially concretized with concrete values; determining whether it is feasible to execute the target branch based on whether the generated path query is satisfiable or unsatisfiable using a constraint solver; if the target branch is feasible, generating a new test driver by replacing symbolic values in the symbolic test driver with generated solution values; and if the target branch is not feasible, analyzing an unsatisfiable core to determine whether unsatisfiability is due to a concretization performed during generation of the path query.

Abstract translation: 用于生成软件分析测试输入的方法和系统包括通过执行具体和部分符号地执行符号测试驱动程序来生成覆盖程序的目标分支的路径查询，其中至少一个符号表达式具体化为具体值; 基于所生成的路径查询是否可满足或不满足使用约束求解器来确定是否可行执行目标分支; 如果目标分支是可行的，则通过用生成的解值替换符号测试驱动器中的符号值来生成新的测试驱动器; 并且如果目标分支是不可行的，则分析不令人满意的核心以确定不满足性是否由于在生成路径查询期间执行的具体化。

公开(公告)号：US20130085742A1

公开(公告)日：2013-04-04

申请号：US13645112

申请日：2012-10-04

Applicant: NEC Laboratories America, Inc.

Inventor： Sean Barker ,  Yun Chi ,  Hyun Jin Moon ,  Vahit Hakan Hacigumus

IPC: G06F9/455

CPC classification number: G06F9/455 ,  G06F9/5088 ,  G06F16/214

Abstract: A method for migration from a multitenant database is shown that includes building an analytical model for each of a set of migration methods based on database characteristics; predicting performance of the set of migration methods using the respective analytical model with respect to tenant service level agreements (SLAs) and current and predicted tenant workloads, where the prediction includes a migration speed and an SLA violation severity; and selecting a best migration method from the set of migration methods according to the respective predicted migration speeds and SLA violation severities.

Abstract translation: 显示了从多租户数据库迁移的方法，其中包括基于数据库特征构建一组迁移方法中的每一个的分析模型; 使用关于租户服务水平协议（SLA）的相应分析模型以及当前和预计的租户工作负载预测该组迁移方法的性能，其中预测包括迁移速度和SLA违规严重性; 并根据各自的预测迁移速度和SLA违规严重程度从该组迁移方法中选择最佳迁移方法。

公开(公告)号：US20040210860A1

公开(公告)日：2004-10-21

申请号：US10795384

申请日：2004-03-09

Applicant: NEC LABORATORIES AMERICA, INC

Inventor： Malay Ganai ,  Aarti Gupta ,  Zijiang Yang ,  Pranav Ashar

IPC: G06F017/50

CPC classification number: G06F17/504

Abstract: There is provided a method of solving a SAT problem comprising partitioning SAT-formula clauses in the SAT problem into a plurality of partitions. Each of said plurality of partitions is solved as a separate process each, thereby constituting a plurality of processes where each of said process communicates only with a subset of the plurality of processes.

Abstract translation: 提供了一种解决SAT问题的方法，包括将SAT问题中的SAT公式子句分成多个分区。 所述多个分区中的每一个分别被解决为单独的处理，从而构成多个处理，其中每个所述进程仅与多个进程的子集进行通信。

公开(公告)号：US20040174939A1

公开(公告)日：2004-09-09

申请号：US10631991

申请日：2003-07-31

Applicant: NEC Laboratories America, Inc.

Inventor： Xiaodong Wang

IPC: H04L027/22 ,  H04L027/14 ,  H04L027/06 ,  H03K009/00 ,  H04L025/08 ,  H03K006/04 ,  H03K005/01 ,  H04B001/10 ,  H03D001/06 ,  H03D001/04 ,  H04L001/00

CPC classification number: H04L1/005 ,  H04L1/0055 ,  H04L1/0618

Abstract: A class of soft-input soft-output demodulation schemes for multiple-input multiple-output (MIMO) channels, based on the sequential Monte Carlo (SMC) framework under both stochastic and deterministic settings. The stochastic SMC sampler generates MIMO symbol samples based on importance sampling and resampling techniques, while the deterministic SMC approach recursively performs exploration and selection steps in a greedy manner. By exploiting the artificial sequential structure of the existing simple Bell Labs Layered Space Time (BLAST) detection method based on nulling and cancellation, the proposed algorithms achieve an error probability performance that is orders of magnitude better than the traditional BLAST detection schemes while maintaining a low computational complexity. Performance is comparable with that of the sphere decoding algorithm, with a much lower complexity. Both the stochastic and deterministic SMC detectors can be employed as the first-stage demodulator in an iterative or turbo receiver in coded MIMO systems.

Abstract translation: 一种用于多输入多输出（MIMO）信道的软输入软输出解调方案，基于随机和确定性设置下的连续蒙特卡罗（SMC）框架。 随机SMC采样器基于重要性采样和重采样技术生成MIMO符号样本，而确定性SMC方法以贪婪方式递归地执行探索和选择步骤。 通过利用基于归零和消除的现有简单的贝尔实验室分层空间时间（BLAST）检测方法的人工顺序结构，提出的算法实现了比传统BLAST检测方案好几个数量级的误差概率性能，同时保持低 计算复杂度。 性能与球体解码算法相当，复杂度要低得多。 随机和确定性SMC检测器都可以用作编码MIMO系统中的迭代或turbo接收机中的第一级解调器。

公开(公告)号：US20040166857A1

公开(公告)日：2004-08-26

申请号：US10722809

申请日：2003-11-26

Applicant: NEC Laboratories America, Inc.

Inventor： Eunsoo Shim ,  Jens-Peter Redlich ,  Richard D. Gitlin

IPC: H04Q007/20

CPC classification number: H04W12/10 ,  H04L63/0807 ,  H04L63/0876 ,  H04L63/126 ,  H04W36/08

Abstract: Security mechanisms are disclosed that protect the integrity of the candidate access node discovery procedures in a mobile communication network. In accordance with an aspect of the invention, an access node stores information on candidate access nodes in the mobile communication network and updates the information only after verifying information provided by a mobile terminal after a handoff from one access node to another access node. In accordance with another aspect of the invention, the information on candidate access nodes in the mobile communication network are associated with a particular mobile terminal and stored at the mobile terminal in a candidate access node list.

Abstract translation: 公开了保护移动通信网络中的候选接入节点发现过程的完整性的安全机制。 根据本发明的一个方面，接入节点在移动通信网络中存储关于候选接入节点的信息，并且仅在从一个接入节点切换到另一个接入节点之后验证由移动终端提供的信息之后更新该信息。 根据本发明的另一方面，移动通信网络中的候选接入节点的信息与特定的移动终端相关联，并且存储在候选接入节点列表中的移动终端处。