公开(公告)号：US20040208565A1

公开(公告)日：2004-10-21

申请号：US10014353

申请日：2001-12-14

Applicant: Nortel Networks Limited

Inventor： Kim B. Roberts ,  Wolfgang Oberhammer ,  Maurice S. O'Sullivan ,  Roland A. Smith

IPC: H04J014/02 ,  H04B010/00

CPC classification number: H04B10/2563 ,  H04J14/02

Abstract: A method and system for reducing non-linear signal degradation effects of WDM optical signals exacerbated by highly correlated bit patterns of optical waveforms in neighboring optical channels. Embodiments include offsetting the transmission times of signals in neighboring channels, and applying different scrambling patterns to the respective data streams prior to transmission on neighboring optical channels.

Abstract translation: 一种用于减少WDM光信号的非线性信号劣化效应的方法和系统，其由相邻光信道中的光波形的高度相关位模式加剧。 实施例包括抵消相邻信道中的信号的传输时间，以及在相邻光信道上传输之前将各种数据流应用不同的加扰模式。

公开(公告)号：US20030161303A1

公开(公告)日：2003-08-28

申请号：US10079559

申请日：2002-02-22

Applicant: Nortel Networks Limited

Inventor： Hamid R. Mehrvar ,  Roland A. Smith ,  Xiaoming Fan ,  Mark Wight

IPC: H04L012/50

CPC classification number: H04L49/30 ,  H04L47/24 ,  H04L47/2433 ,  H04L47/2441 ,  H04L47/50 ,  H04L49/1515 ,  H04L49/153 ,  H04L49/20 ,  H04L49/25 ,  H04L49/3081 ,  H04L2012/5651

Abstract: A method and system for conveying an arbitrary mixture of high and low latency traffic streams across a common switch fabric implements a multi-dimensional traffic classification scheme, in which multiple orthogonal traffic classification methods are successively implemented for each traffic stream traversing the system. At least two diverse paths are mapped through the switch fabric, each path being optimized to satisfy respective different latency requirements. A latency classifier is adapted to route each traffic stream to a selected path optimized to satisfy latency requirements most closely matching a respective latency requirement of the traffic stream. A prioritization classifier independently prioritizes traffic streams in each path. A fairness classifier at an egress of each path can be used to enforce fairness between responsive and non-responsive traffic streams in each path. This arrangement enables traffic streams having similar latency requirements to traverse the system through a path optimized for those latency requirements.

Abstract translation: 用于传送跨越公共交换机结构的高延迟和低等待时间业务流的任意混合的方法和系统实现多维业务分类方案，其中对于遍历系统的每个业务流连续地实现多个正交业务分类方法。 通过交换结构映射至少两个不同的路径，每个路径被优化以满足各自的不同等待时间要求。 延迟分类器适于将每个业务流路由到经过优化的所选路径，以满足与业务流的相应等待时间要求最接近的等待时间要求。 优先级分类器在每个路径中独立地对流量进行优先级排序。 每个路径的出口处的公平分类器可以用于在每个路径中的响应和非响应业务流之间实施公平性。 这种布置使得具有相似等待时间要求的业务流可以通过针对那些等待时间要求而优化的路径来遍历系统。