公开(公告)号：US09167322B1

公开(公告)日：2015-10-20

申请号：US14301555

申请日：2014-06-11

Applicant: Google Inc.

Inventor： Xiaoxue Zhao ,  Bikash Koley ,  Vijay Vusirikala ,  Edward Crabbe ,  Paul Phillip Germano ,  Hong Liu ,  Philip Michael Wells

IPC: H04Q11/00 ,  H04B10/2575

CPC classification number: H04Q11/0005 ,  H04B10/2575 ,  H04Q2011/0013 ,  H04Q2011/0032 ,  H04Q2011/0039 ,  H04Q2011/006

Abstract: A packet switch/router including a first stage switch fabric receiving an electrical signal, a mid-stage buffer receiving and storing the electrical signal from the first stage switch fabric, and a second stage switch fabric receiving the electrical signal from the mid-stage buffer. Each switch fabric includes N layers of N×N arrayed waveguide gratings (AWGs), and each AWG has ingress ports and egress ports. A wavelength tunable device, such as a tunable laser, communicates with a source ingress port of an AWG and converts the received electrical signal to an optical signal having a wavelength selected for routing a packet from the source ingress port to a target egress port of the arrayed waveguide grating. A photoreceiver, such as a burst-mode photoreceiver, receives the propagated optical signal from the target egress port and converts the optical signal to the electrical signal.

Abstract translation: 包括接收电信号的第一级交换结构的分组交换机/路由器，接收并存储来自第一级交换结构的电信号的中间缓冲器以及从中间级缓冲器接收电信号的第二级交换机结构 。 每个交换结构包括N层N×N阵列波导光栅（AWG），每个AWG具有入口端口和出口端口。 诸如可调激光器的波长可调设备与AWG的源入口端口进行通信，并将接收到的电信号转换为具有选择的波长的光信号，以将数据包从源入口端口路由到目标出口端口 阵列波导光栅。 诸如突发模式光接收器的光接收器从目标出口接收传播的光信号，并将光信号转换为电信号。

公开(公告)号：US08806244B1

公开(公告)日：2014-08-12

申请号：US14084054

申请日：2013-11-19

Applicant: Google Inc.

Inventor： Dennis Charles Abts ,  Peter Michael Klausler ,  Hong Liu ,  Michael Marty ,  Philip Michael Wells

IPC: G06F1/32

CPC classification number: G06F1/3253 ,  H04L41/0833 ,  H04L43/0882 ,  H04L69/14 ,  Y02D10/151 ,  Y02D50/30

Abstract: Energy proportional solutions are provided for computer networks such as datacenters. Congestion sensing heuristics are used to adaptively route traffic across links. Traffic intensity is sensed and links are dynamically activated as they are needed. As the offered load is decreased, the lower channel utilization is sensed and the link speed is reduced to save power. Flattened butterfly topologies can be used in a further power saving approach. Switch mechanisms are exploit the topology's capabilities by reconfiguring link speeds on-the-fly to match bandwidth and power with the traffic demand. For instance, the system may estimate the future bandwidth needs of each link and reconfigure its data rate to meet those requirements while consuming less power. In one configuration, a mechanism is provided where the switch tracks the utilization of each of its links over an epoch, and then makes an adjustment at the end of the epoch.

Abstract translation: 为诸如数据中心的计算机网络提供能量比例解决方案。 拥塞感知启发式用于自适应地跨链路路由流量。 检测到交通强度，并根据需要动态激活链路。 随着提供的负载减小，感测到较低的信道利用率，并且减少链路速度以节省功率。 扁平蝶形拓扑可以用于进一步节能方法。 交换机制通过重新配置链路速度来快速利用拓扑的功能，以匹配带宽和功率与流量需求。 例如，系统可以估计每个链路的未来带宽需求，并重新配置其数据速率以满足这些要求，同时消耗更少的功率。 在一种配置中，提供了一种机制，其中开关在历元上跟踪其每个链接的利用率，然后在时代结束时进行调整。