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Method and apparatus for facilitating asymmetric line rates in an Ethernet passive optical network

A line rate, asymmetric technology, applied in the direction of digital transmission systems, electrical components, transmission systems, etc., can solve problems such as the EPON system that has not realized the asymmetric line rate

Inactive Publication Date: 2008-07-09
TEKNOVUS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, there is no existing EPON architecture that implements asymmetric line rate

Method used

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  • Method and apparatus for facilitating asymmetric line rates in an Ethernet passive optical network
  • Method and apparatus for facilitating asymmetric line rates in an Ethernet passive optical network
  • Method and apparatus for facilitating asymmetric line rates in an Ethernet passive optical network

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Embodiment Construction

[0038]The following description is presented to enable one of ordinary skill in the art to make and use the invention, and is provided in the context of a particular application and its requirements. Various modifications to the disclosed embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications (e.g., , general passive optical network (PON) architecture). Thus, the present invention is not intended to be limited to the embodiments shown but is to be accorded the widest scope consistent with the principles and features disclosed herein.

[0039] The operations described in this detailed description may be stored on a digital circuit readable storage medium, which may be any device or medium that can store code and / or data for use by digital circuits. This includes, but is not limited to, application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs)...

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Abstract

One embodiment of the present invention provides a method for facilitating asymmetric line rates in an Ethernet passive optical network (EPON) which includes a central node and at least one remote node. During operation, the system provides a downstream code-group clock, wherein each cycle thereof corresponds to a code group transmitted from the central node to a remote node. The system also provides an upstream code-group clock, wherein each cycle thereof corresponds to a code group received at the central node from a remote node. In addition, the system provides a multi-point control protocol (MPCP) clock, wherein the frequency ratio of the MPCP clock to the downstream code-group clock is different from the frequency ratio of the MPCP clock to the upstream code-group clock, thereby allowing the downstream transmission to be performed at a faster line rate than the upstream transmission line rate.

Description

technical field [0001] The invention relates to the design of Ethernet passive optical network. More particularly, the present invention relates to a method and apparatus for achieving asymmetric line rate in an Ethernet passive optical network. Background technique [0002] To keep pace with the growing Internet traffic, optical fibers and associated optical transmission equipment have been widely deployed, significantly increasing the capacity of backbone networks. Although this increases the capacity of the backbone network, it does not match the corresponding increase in the capacity of the access network. Even with broadband solutions such as Digital Subscriber Line (DSL) and Cable Modem (CM), the limited bandwidth provided by current access networks creates a severe bottleneck in delivering high bandwidth to end users. [0003] Among the different technologies currently being developed, Ethernet Passive Optical Network (EPON) is one of the best candidate technologies...

Claims

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Application Information

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IPC IPC(8): H04L12/413
Inventor G·克雷默E·W·博伊德R·E·赫思L·D·戴维斯L·拉姆
Owner TEKNOVUS
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