公开(公告)号：US20170104496A1

公开(公告)日：2017-04-13

申请号：US15287658

申请日：2016-10-06

Applicant: NEC Laboratories America, Inc.

Inventor： Shaoliang Zhang ,  Fatih Yaman ,  Wei Zhou

IPC: H03M13/27 ,  H03M13/37 ,  H04L1/00 ,  H03M13/29 ,  H04B10/58 ,  H04B10/60

CPC classification number: H04L1/0064 ,  H03M13/1102 ,  H03M13/152 ,  H03M13/2906 ,  H03M13/2948 ,  H03M13/453 ,  H04B10/58 ,  H04B10/60 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/005 ,  H04L1/0058 ,  H04L1/0065

Abstract: Systems and methods are disclosed for optically communicating data by, at a transmitter side, encoding a block of input bits by one or more outer encoders, and after interleaving the encoded bits, permuting the encoded bits according to a predetermined sequence or order, and further encoding the encoded bits by an inner encoder, and at a receiver side, decoding received bits with an inner decoder, and after the encoded bits are permuted, subsequently decoding by and outer decoder, and returning information bits at an outer decoder as an output. The soft-decision and hard-decision outputs from the outer BCH code help the inner LDPC decoder to have better estimation of the received bits and gain performance. The performance in higher-order modulation formats could be as large as 0.5 dB in one embodiment.

公开(公告)号：US09609400B2

公开(公告)日：2017-03-28

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: H04Q11/00 ,  H04L12/40

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.

公开(公告)号：US09599460B2

公开(公告)日：2017-03-21

申请号：US14842503

申请日：2015-09-01

Applicant: NEC Laboratories America, Inc.

Inventor： Ting Wang ,  Yi Weng

IPC: G01B11/16 ,  G01L1/24

CPC classification number: G01B11/168 ,  G01L1/242 ,  G01L1/246

Abstract: Methods and systems of sensing conditions in a fiber includes launching a light beam into a fiber. A first branch of scattered light is set to a mode other than a fundamental mode. A second branch of scattered light is optically filtered to remove unscattered input light. Brillouin scattered light is coherently detected on the first branch to produce a combined temperature/strain profile of the fiber. Raman scattered light on the second branch is directly detected to produce a temperature profile of the fiber. A strain profile of the fiber is determined, using a processor, based on the combined temperature/strain profile and the temperature profile.

公开(公告)号：US20170070956A1

公开(公告)日：2017-03-09

申请号：US15255288

申请日：2016-09-02

Applicant: NEC Laboratories America, Inc.

Inventor： Narayan Prasad ,  Sampath Rangarajan ,  Hajar Mahdavi-Doost

IPC: H04W52/02 ,  H04W72/12 ,  H04W72/04

CPC classification number: H04W52/0216 ,  H04W72/1273 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/1264

Abstract: A method is provided for performing downlink scheduling in Long Term Evolution-Advanced networks. The method includes assigning resource blocks and transmission modes to users such that (i) each of the users that is assigned at least one of the resource blocks is assigned only one transmission mode chosen from a finite set of transmission modes, (ii) a sum of normalized costs across all of the resource blocks that are assigned to the users is less than unity. The method further includes incorporating a resource block and transmission mode assignment for a user into downlink scheduler of a base station to cause the downlink scheduler to perform downlink scheduling in accordance with the resource block and transmission mode assignment.

Abstract translation: 提供了一种用于在长期演进 - 高级网络中执行下行链路调度的方法。 该方法包括向用户分配资源块和传输模式，使得（i）被分配至少一个资源块的每个用户只分配从有限传输模式集合中选择的一种传输模式，（ii）总和 分配给用户的所有资源块的归一化成本小于1。 该方法还包括将用户的资源块和传输模式分配合并到基站的下行链路调度器中，以使下行链路调度器根据资源块和传输模式分配来执行下行链路调度。

公开(公告)号：US20170048876A1

公开(公告)日：2017-02-16

申请号：US15237485

申请日：2016-08-15

Applicant: NEC Laboratories America, Inc.

Inventor： Rajesh Mahindra ,  Karthikeyan Sundaresan ,  Junguk Cho ,  Sampath Rangarajan

IPC: H04W72/08 ,  H04L12/66 ,  H04L29/08 ,  H04W8/00 ,  H04L12/14 ,  H04L12/46 ,  H04W8/08 ,  H04W88/16 ,  H04L12/851

CPC classification number: H04L12/4633 ,  H04L12/1407 ,  H04L12/407 ,  H04L12/66 ,  H04L67/1036 ,  H04M15/66 ,  H04M15/8033 ,  H04W4/00 ,  H04W4/24 ,  H04W76/00

Abstract: Systems and methods for standards compatible Mobile Edge Computing (MEC), including splitting Serving gateways (SGWs) and Packet Data Network gateways (PDN-GWs) to provision sufficient resources to deploy data-plane entity instances locally at a Radio Access Network (RAN) edge with one or more cloudlets. One or more local controller nodes is deployed in one or more operator clouds, a dedicated bearer is leveraged to route traffic from the one or more cloudlets through the split SGWs and PDN-GWs, and the dedicated bearer is configured with a traffic flow template (TFT) including an Internet Protocol (IP) address of the one or more cloudlets. Efficient access to one or more MEC applications at the RAN edge is provided to one or more user devices using the dedicated bearer.

Abstract translation: 包括拆分服务网关（SGW）和分组数据网络网关（PDN-GW）的标准兼容移动边缘计算（MEC）的系统和方法来提供足够的资源，以在无线电接入网络（RAN）本地部署数据平面实体实例， 边缘与一个或多个云纹。 一个或多个本地控制器节点部署在一个或多个运营商云中，利用专用承载来通过分组SGW和PDN-GW从一个或多个云端路由业务，并且专用承载配置有业务流模板 TFT），其包括一个或多个云端的因特网协议（IP）地址。 使用专用承载向RAN边缘的一个或多个MEC应用提供有效的访问。

公开(公告)号：US09569491B2

公开(公告)日：2017-02-14

申请号：US14321881

申请日：2014-07-02

Applicant: NEC Laboratories America, Inc.

Inventor： Jagan Sankaranarayanan ,  Vahit Hacigumus ,  Jeffrey LeFevre ,  Junichi Tatemura

IPC: G06F17/30

CPC classification number: G06F17/30457 ,  G06F17/30339 ,  G06F17/30383 ,  G06F17/30598

Abstract: A system includes first and second data stores, each store having a set of materialized views of the base data and the views comprise a multistore physical design; an execution layer coupled to the data stores; a query optimizer coupled to the execution layer; and a tuner coupled to the query optimizer and the execution layer, wherein the tuner determines a placement of the materialized views across the stores to improve workload performance upon considering each store's view storage budget and a transfer budget when moving views across the stores.

Abstract translation: 系统包括第一和第二数据存储，每个存储具有一组基本数据的物化视图，并且视图包括多存储物理设计; 耦合到数据存储的执行层; 耦合到执行层的查询优化器; 以及耦合到所述查询优化器和所述执行层的调谐器，其中，所述调谐器在跨所述商店移动视图时，在考虑每个商店的视图存储预算和转移预算时，确定跨所述商店的物化视图的放置以改善工作负载性能。

公开(公告)号：US20170038786A1

公开(公告)日：2017-02-09

申请号：US15228670

申请日：2016-08-04

Applicant: NEC Laboratories America, Inc.

Inventor： Babak Asghari ,  Ratnesh Sharma ,  Amirsaman Arabali

IPC: G05F1/66 ,  G05B15/02

CPC classification number: G05F1/66 ,  G05B15/02

Abstract: A system and method for management of one or more grid-scale Energy Storage Systems (GSSs), including generating an optimal GSS schedule in the presence of frequency regulation uncertainties. The GSS scheduling includes determining optimal capacity deployment factors to minimize penalties for failing to provide scheduled energy and frequency regulation up/down services subject to risk constraints; generating a schedule for a GSS unit by performing co-optimization using the optimal capacity deployment factors, the co-optimization including tracking upper and/or lower bounds on a state of charge (SoC) and including the bounds as a hard constraints; and calculating risk indices based on the optimal scheduling for the GSS unit, and outputting an optimal GSS schedule if risk constraints are satisfied. A controller charges and/or discharges energy from GSS units based on the generated optimal GSS schedule.

Abstract translation: 一种用于管理一个或多个电网规模能量存储系统（GSS）的系统和方法，包括在存在频率调节不确定性的情况下生成最佳GSS调度。 GSS调度包括确定最佳容量部署因素，以最大限度地减少因风险约束而不能提供预定能量和频率调节上/下服务的惩罚; 通过使用最佳容量部署因素执行协同优化来生成GSS单元的调度，所述协同优化包括跟踪充电状态（SoC）的上限和/或下限，并且将边界包括为硬约束; 并根据GSS单位的最优调度计算风险指标，并在满足风险约束的情况下输出最佳GSS排程。 控制器根据所产生的最佳GSS计划从GSS单位收取和/或排放能量。

公开(公告)号：US09544667B2

公开(公告)日：2017-01-10

申请号：US14506627

申请日：2014-10-04

Applicant: NEC Laboratories America, Inc.

Inventor： Junqiang Hu ,  Philip Nan Ji ,  Ting Wang ,  Yawei Yin

IPC: H04J14/00 ,  H04Q11/00

CPC classification number: H04Q11/0066 ,  H04Q2011/0064

Abstract: A switching system includes one or more line card for input processing, forwarding, queuing, and scheduling data, the line card having a tunable laser to select a wavelength according to the packets' destination for a given burst of packets, so that the burst is switched to a desired destination and sent all-optically to a connected interface; an all-optical switch fabric coupled to the line card to perform wavelength switching; and a centralized arbitrator that resolves the contention from different input ports.

Abstract translation: 交换系统包括用于输入处理，转发，排队和调度数据的一个或多个线路卡，该线路卡具有可调谐激光器，以针对给定的分组突发根据分组的目的地选择波长，使得该突发是 切换到所需的目的地并全光发送到连接的接口; 耦合到线路卡以执行波长切换的全光交换结构; 以及解决来自不同输入端口的争用的集中仲裁器。

公开(公告)号：US09538415B2

公开(公告)日：2017-01-03

申请号：US14603723

申请日：2015-01-23

Applicant: NEC Laboratories America, Inc.

Inventor： Narayan Prasad ,  Mustafa Arslan ,  Sampath Rangarajan

IPC: H04W28/02 ,  H04L5/00 ,  H04W72/12 ,  H04W24/02

CPC classification number: H04W28/0236 ,  H04L5/0037 ,  H04L5/0058 ,  H04L5/0073 ,  H04L5/0076 ,  H04W24/02 ,  H04W72/1273

Abstract: We show that for any given muting fraction, a more constrained version of the problem of interest can be optimally solved in an efficient manner. In addition, the obtained solution is also a near-optimal solution for the original problem (for the given muting ratio). This allows us provide an algorithm that offers a good solution to the original problem with a tractable complexity. We also derive a lower complexity greedy that offers good performance and a certain worst-case performance guarantee. Simulations over an example LTE HetNet topology reveal the superior performance of the proposed algorithms and underscore the benefits of jointly exploiting partial muting of the macro and load balancing.

Abstract translation: 我们表明，对于任何给定的静噪分数，可以以有效的方式最佳地解决感兴趣问题的更受约束的版本。 此外，所获得的解决方案也是原始问题的近似最优解（对于给定的静噪比）。 这允许我们提供一种算法，为原来的问题提供一个很好的解决方案，容易复杂。 我们还推出了一个较低复杂性的贪心，提供了良好的性能和一些最坏的性能保证。 通过示例LTE HetNet拓扑的仿真揭示了所提出的算法的优越性能，并强调了共同利用宏和负载均衡的部分静音的好处。

公开(公告)号：US09538265B2

公开(公告)日：2017-01-03

申请号：US14612933

申请日：2015-02-03

Applicant: NEC Laboratories America, Inc.

Inventor： Konstantinos Kanonakis

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

CPC classification number: H04Q11/0066 ,  H04J14/0256 ,  H04J14/0267 ,  H04J14/0275 ,  H04Q11/0005 ,  H04Q2011/0016 ,  H04Q2011/005 ,  H04Q2011/0064 ,  H04Q2011/0086 ,  H04Q2011/0088

Abstract: Systems and methods for optical switching of time-varying traffic, including generating fixed-length bursts using one or more Optical Edge Nodes (OENs). The bursts are temporarily stored in electrical buffers located at the OENs, wherein the electrical buffers include one or more burst queues, and one burst queue is allocated for each of one or more destination OENs. The OENs are interconnected using one or more Optical Switching Nodes (OSNs). A control protocol is implemented to establish and remove soft reservations using at least one of the OENs and OSNs, optical channels are reserved for a duration long enough to transmit one or more data bursts, the duration being selected independently for each of the one or more burst queues, the control protocol gives precedence to avoiding disrupting of any existing soft reservations when reserving resources; and the soft reservations are capable of being reused until overridden.

Abstract translation: 用于时变业务的光切换的系统和方法，包括使用一个或多个光边缘节点（OEN）生成固定长度的脉冲串。 脉冲串暂时存储在位于OEN的电气缓冲器中，其中电气缓冲器包括一个或多个突发队列，并且为一个或多个目的地OEN中的每一个分配一个突发队列。 OEN使用一个或多个光交换节点（OSN）互连。 执行控制协议以使用OEN和OSN中的至少一个建立和去除软预留，光信道被保留足够长的时间以发送一个或多个数据突发，持续时间被独立地选择为一个或多个 突发队列，控制协议优先于避免在保留资源时破坏任何现有软预留; 软预订能够被重用，直到被覆盖为止。