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：US09742489B2

公开(公告)日：2017-08-22

申请号：US14961236

申请日：2015-12-07

Applicant: NEC Laboratories America, Inc.

Inventor： Yawei Yin ,  Konstantinos Kanonakis ,  Philip Ji ,  Ting Wang ,  Shinya Nakamura

IPC: H04B10/038 ,  H04B10/032 ,  H04B10/079 ,  H04Q11/00

CPC classification number: H04B10/038 ,  H04B10/032 ,  H04B10/0793 ,  H04B10/0795 ,  H04B10/07955 ,  H04Q11/0005

Abstract: Systems and methods are disclosed for data communication by forming a hybrid that includes an electrical switching network with packet granularity of switching and store-and-forward forwarding services to network traffic and an optical switching network providing circuit granularity of switching and optical bypassing services to network traffic; applying local control of optical switching modules in the optical switching network with a network controller coupled to the electrical switching network, the optical switching network, and a loss-of-light detection module; and detecting loss-of-light in a failure point in the optical switching network and rerouting traffic to avoid the optical failure point.

公开(公告)号：US20160380873A1

公开(公告)日：2016-12-29

申请号：US15187074

申请日：2016-06-20

Applicant: NEC Laboratories America, Inc.

Inventor： Konstantinos Kanonakis ,  Yawei Yin ,  Shinya Nakamura

IPC: H04L12/751

CPC classification number: B65D39/04 ,  B65D39/0094 ,  B65D41/225 ,  B65D41/28 ,  H04L45/02

Abstract: Controllers in a software defined network and methods implemented such controllers include forming an auxiliary graph based on a network graph. The network graph includes aggregating and non-aggregating nodes and the auxiliary graph includes a number of non-aggregating nodes based on a number of incoming neighbors to non-aggregating nodes in the network graph. A best path from a source node to a destination node through the auxiliary graph is determined based on output links from non-aggregating nodes are occupied. The best path through the auxiliary graph is translated to a best path from the source node to the destination node through the network graph. Traffic is routed through the software-defined network based on the best path.

Abstract translation: 软件定义的网络中的控制器和实现这种控制器的方法包括基于网络图形成辅助图形。 网络图包括聚合和非聚合节点，并且辅助图形包括基于网络图中非聚合节点的输入邻居数量的多个非聚合节点。 通过辅助图形从源节点到目的地节点的最佳路径是基于来自非聚合节点的输出链路被占用来确定的。 通过辅助图形的最佳路径被转换为通过网络图形从源节点到目标节点的最佳路径。 通过基于最佳路径的软件定义网络路由流量。

公开(公告)号：US20150295756A1

公开(公告)日：2015-10-15

申请号：US14682382

申请日：2015-04-09

Applicant: NEC Laboratories America, Inc.

Inventor： Yawei Yin ,  Philip Ji ,  Konstantinos Kanonakis ,  Ting Wang

IPC: H04L12/24 ,  H04Q11/00

CPC classification number: H04Q11/0071 ,  H04L49/60 ,  H04Q2011/0081 ,  H04Q2011/0086 ,  H04Q2011/009

Abstract: The present invention proposes a hybrid optical/electrical network architecture for the direct-connect datacenters and HPC systems. It utilizes small scale optical switches in parallel with the electrical switching modules (e.g. the multi-port NIC) in the direct-connect electrical network (e.g 3D Torus) in order to provide optical bypassing capabilities. The optical network keeps the same topology as the electrical packet switching network, while the number of optical nodes can be equal or less than the electrical switching modules.

Abstract translation: 本发明提出了用于直连数据中心和HPC系统的混合光/电网络架构。 它利用与直接连接电网（例如3D环）中的电气开关模块（例如多端口NIC））并联的小规模光学开关，以提供光学旁路能力。 光网络保持与电子分组交换网络相同的拓扑结构，而光节点的数量可以等于或小于电气交换模块。

公开(公告)号：US20180316593A9

公开(公告)日：2018-11-01

申请号：US15187074

申请日：2016-06-20

Applicant: NEC Laboratories America, Inc.

Inventor： Konstantinos Kanonakis ,  Yawei Yin ,  Shinya Nakamura

IPC: H04L12/751

Abstract: Controllers in a software defined network and methods implemented such controllers include forming an auxiliary graph based on a network graph. The network graph includes aggregating and non-aggregating nodes and the auxiliary graph includes a number of non-aggregating nodes based on a number of incoming neighbors to non-aggregating nodes in the network graph. A best path from a source node to a destination node through the auxiliary graph is determined based on output links from non-aggregating nodes are occupied. The best path through the auxiliary graph is translated to a best path from the source node to the destination node through the network graph. Traffic is routed through the software-defined network based on the best path.

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：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。

公开(公告)号：US09414135B2

公开(公告)日：2016-08-09

申请号：US14573483

申请日：2014-12-17

Applicant: NEC Laboratories America, Inc.

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

IPC: H04Q11/00 ,  H04J3/16

CPC classification number: H04Q11/0005 ,  H04J3/1664 ,  H04J2203/0012 ,  H04J2203/0019 ,  H04Q11/0062

Abstract: Methods and systems for flexible-client, flexible-link optical transponders include electrical-to-optical transponders, which accept client data from a flow distributor, and a first multiplexing switch that connects modulated optical carriers from the transponders to line interfaces. The electrical-to-optical transponders each include a flexible optical transport unit (OTU) framer module that compresses multiple optical data units (ODUs) into a single ODU having a higher order than any of the input ODUs to form an optical transport network (OTN) frame. An electrical-to-optical modulator modulates OTN frames onto a carrier. The transponder includes a second multiplexing switch that accepts optical carriers from line interfaces and optical-to-electrical transponders that accept modulated optical carriers from the second multiplexing switch. Each optical-to-electrical transponder includes a photodetector to convert the modulated optical carriers to the electrical domain and a flexible OTU framer module that decompresses received ODUs in OTN frames into multiple ODUs to form a bit stream.

Abstract translation: 灵活客户端，灵活链路光转发器的方法和系统包括从流分发器接收客户端数据的电 - 光转发器，以及将转发器上的调制光载波连接到线路接口的第一复用开关。 电光转发器每个都包括柔性光传输单元（OTU）成帧器模块，其将多个光数据单元（ODU）压缩成具有比任何输入ODU高的单个ODU，以形成光传输网络（OTN ）框架。 电光调制器将OTN帧调制到载波上。 应答器包括第二复用开关，其接收来自线路接口的光载波和接收来自第二复用交换机的调制光载波的光电转发器。 每个光电转发器包括用于将经调制的光载波转换成电域的光电检测器，以及将OTN帧中接收的ODU解压缩成多个ODU以形成比特流的灵活OTU成帧器模块。

公开(公告)号：US20160204856A1

公开(公告)日：2016-07-14

申请号：US14961236

申请日：2015-12-07

Applicant: NEC Laboratories America, Inc.

Inventor： Yawei Yin ,  Konstantinos Kanonakis ,  Philip Ji ,  Ting Wang ,  Shinya Nakamura

IPC: H04B10/038 ,  H04B10/079 ,  H04B10/032

CPC classification number: H04B10/038 ,  H04B10/032 ,  H04B10/0793 ,  H04B10/0795 ,  H04B10/07955 ,  H04Q11/0005

Abstract: Systems and methods are disclosed for data communication by forming a hybrid that includes an electrical switching network with packet granularity of switching and store-and-forward forwarding services to network traffic and an optical switching network providing circuit granularity of switching and optical bypassing services to network traffic; applying local control of optical switching modules in the optical switching network with a network controller coupled to the electrical switching network, the optical switching network, and a loss-of-light detection module; and detecting loss-of-light in a failure point in the optical switching network and rerouting traffic to avoid the optical failure point.

Abstract translation: 公开了用于数据通信的系统和方法，其通过形成包括具有交换分组粒度的交换网络和存储转发转发服务到网络业务的交换网络和向网络提供交换和光旁路服务的电路粒度的光交换网络的混合 交通; 通过耦合到电气交换网络，光交换网络和光损失检测模块的网络控制器对光交换网络中的光交换模块进行本地控制; 并且在光交换网络中的故障点中检测光损耗并重新路由业务以避免光学故障点。

公开(公告)号：US20160105376A1

公开(公告)日：2016-04-14

申请号：US14845078

申请日：2015-09-03

Applicant: NEC Laboratories America, Inc.

Inventor： Neda Cvijetic ,  Konstantinos Kanonakis ,  Ting Wang ,  Jing Wang

IPC: H04L12/911 ,  H04L12/26 ,  H04L29/08

CPC classification number: H04L47/821 ,  H04L43/08 ,  H04L67/12

Abstract: A system and method for network virtualization and resource allocation, including storing one or more received network requests in a request table, and updating at least one of a flow table, a waiting list table, or a candidate group map based on the one or more received network requests. The updating includes monitoring a transmission progress of each of one or more flows in a network of interconnected computing devices and moving completed flows from the flow table to a success list, moving requests in the waiting list table which have reached an attempt threshold from the flow table to a fail list, and compiling any residual requests in the waiting list with new requests to generate a new request table. A deterministic request allocation and/or an optimizing request allocation is performed based on the new request table.

Abstract translation: 一种用于网络虚拟化和资源分配的系统和方法，包括将一个或多个所接收的网络请求存储在请求表中，以及基于所述一个或多个基于所述流表，等待列表或候选组映射中的至少一个来更新 收到网络请求。 所述更新包括监视互连计算设备的网络中的一个或多个流中的每一个的传输进度，并将完成的流从流表移动到成功列表，从等待流程中移动已经达到尝试阈值的等待列表中的请求 表到失败列表，并用新的请求编译等待列表中的任何剩余请求以生成新的请求表。 基于新的请求表执行确定性请求分配和/或优化请求分配。