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Method and system for protection switching in Ethernet passive optical networks

A passive optical network and protection switching technology, which is applied in transmission systems, star electromagnetic networks, electromagnetic network arrangements, etc., can solve problems such as complete failure of electrical components, service degradation, and component aging

Active Publication Date: 2011-09-28
AVAGO TECH INT SALES PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such as laser optics aging or failure over an undesired period of time, will result in service degradation
Electrical components on OLT line cards and ONUs are also prone to complete failure

Method used

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  • Method and system for protection switching in Ethernet passive optical networks
  • Method and system for protection switching in Ethernet passive optical networks
  • Method and system for protection switching in Ethernet passive optical networks

Examples

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Embodiment Construction

[0047] The following descriptions of the present invention enable those skilled in the art to obtain or use the embodiments of the present invention, and the embodiments are carried out under specific application conditions and requirements. Variations disclosed in this embodiment are obvious to those skilled in the art, and the principle of the present invention defined here can be applied to other embodiments and applications without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the illustrated embodiments, and all contents related to the disclosed principles and features belong to the protection scope of the present invention.

[0048] The operating program described in the above details may be stored in a digital circuit readable storage medium, which may be any device or medium used by a digital circuit to store code and / or data. Digital circuit-readable storage media include, but are not limited to, appli...

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Abstract

One embodiment provides a system that performs protection switching in an Ethernet passive optical network (EPON), which includes an optical line terminal (OLT) and at least one optical network unit (ONU). The system is configured with at least one redundant component for the OLT and / or ONUs, wherein the redundant component can be optical or electrical, and can be a port, line card or link. The system provides protection by detecting a failure, and switching automatically to the redundant components to reduce service disruption time. The protection switching comprises: preserving the existing configuration over the loss of at least one of a multiple-point control protocol (MPCP) message; an operations, administration and maintenance (OAM) message; and a signal on the physical layer. The system recovers from the failure without performing ONU discovery.

Description

technical field [0001] The invention relates to the design of the Ethernet passive optical network, more precisely, relates to a design of protection switching of the Ethernet passive optical network. Background technique [0002] In order to keep up with the increasing pace of Internet traffic, network operators have extensively used optical fibers and optical transmission equipment, which significantly increases the capacity of backbone networks. However, the corresponding increase in access network capacity cannot meet the growth needs of the backbone network capacity. Although broadband solutions such as digital subscriber line (DSL) and cable modem (cable modem, CM) are used, the limited bandwidth provided by current access networks is still a serious problem for end-user high bandwidth transmission. the bottleneck. [0003] Among different competing technologies, Ethernet passive optical networks (EPON) is one of the best candidates in the next generation access netw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/13H04B10/2581
CPCH04B10/272H04J2203/006H04Q2011/0081H04Q11/0067H04B10/032
Inventor 山婕·戈斯瓦密L·D·戴维斯E·W·博伊德
Owner AVAGO TECH INT SALES PTE LTD
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