Protecting and rearranging method, system and node

A technology of protection switching and end nodes, applied in the field of communication, can solve problems such as low efficiency and long time

Active Publication Date: 2013-11-20
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it takes a long time to protect the switching with this scheme, and the efficiency is still low

Method used

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  • Protecting and rearranging method, system and node
  • Protecting and rearranging method, system and node
  • Protecting and rearranging method, system and node

Examples

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Embodiment Construction

[0056] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0057] The technical solutions of the embodiments of the present invention can be applied to optical networks such as SDH (Synchronous Digital Hierarchy, Synchronous Digital Hierarchy) / SONET (Synchronous Optical Network, Synchronous Optical Network), or OTN (Optical Transport Network, Optical Transport Network).

[0058] figure 1 It is a flowchart of a protection switching method according to an embodiment of the present invention. figure 1 The method...

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Abstract

The embodiment of the invention provides a protecting and rearranging method, a system and a node. The method comprises the steps of using an intermediate node to receive the protection and rearrangement request information sent by an upstream neighbor node of the intermediate node; using the intermediate node to determine whether the protection channel resource of the intermediate node is available according to the protection and rearrangement request information, and if the protection channel resource of the intermediate node is free, to send the first indication information used to notice the upstream neighbor node that the protection channel resource of the intermediate node is available, to the upstream neighbor node, and to send the protection and rearrangement request information to a downstream neighbor node of the intermediate node; establishing the cross connection of a first protection path at the intermediate node after the intermediate node receives the second indication information that the protection channel resource of the downstream neighbor node of the intermediate node is available. Therefore, the resource utilization rate is improved, the protection rearrangement can be carried out rapidly, the efficiency is improved, and the error connection of businesses during the protection rearrangement process is avoided.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of communication, and more specifically, to a protection switching method, system and node. Background technique [0002] In the process of service transmission on the communication network, when the working path of the transmission service fails, protection switching is required, that is, the service on the faulty path is switched to the protection path for transmission, so as to ensure the reliability of service transmission. [0003] Reliability can be achieved by different protection and recovery techniques. For example, 1+1 protection, in the optical network, provides two paths for the transmission of each service, and selects the working path for transmitting services according to the signal quality of the two paths, and the other path is called the protection path. The protection path can be used when the working path fails. Therefore, each service transmission requires dou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/032H04L12/24H04L45/24H04L45/28
CPCH04L45/28H04L45/22
Inventor 林毅张弦
Owner HUAWEI TECH CO LTD
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