Method, system for protection switching

A protection switching and subrack technology, applied in the communication field, can solve the problem of no network element control unit, dynamic cross-connect unit, etc., and achieve the effect of avoiding switching deadlock or wrong switching

Active Publication Date: 2009-08-12
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the function design of the expansion subrack is relatively simple, there is no corresponding network element control unit and dynamic cross-connect unit, only a simple expansion control unit

Method used

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  • Method, system for protection switching
  • Method, system for protection switching
  • Method, system for protection switching

Examples

Experimental program
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Effect test

example 1

[0048] Example 1, the standard subrack notifies the relevant business units on the standard subrack to perform protection switching with sustainable events, and notifies the extended subrack with sustainable events to perform protection switching; the extended subrack notifies the extended subrack with sustainable events All business units on the subrack perform protection switching, and notify the standard subrack to perform protection switching with an instantaneous event.

[0049] In this example, a multi-subrack system with one standard subrack and one extended subrack is taken as an example to describe the above technical solution of the embodiment of the present invention. The architecture of the multi-subrack system can refer to figure 2 to understand, image 3 It is a flow chart of detailed processing of the protection switching method according to Example 1 of the embodiment of the present invention, such as image 3 As shown, including the following processing:

...

example 2

[0055] In the second example, the standard subrack notifies the relevant business units on the standard subrack to perform protection switching with sustainable events, and notifies the extended subrack with instantaneous events to perform protection switching; the extended subrack notifies the extended subrack with sustainable events All service units on the rack perform protection switching, and notify the standard subrack to perform protection switching with sustainable events.

[0056] This example also takes a multi-subrack system with one standard subrack and one extended subrack as an example to describe the above technical solution of the embodiment of the present invention. Figure 4 It is a flow chart of detailed processing of the protection switching method according to Example 2 of the embodiment of the present invention, such as Figure 4 As shown, including the following processing:

[0057] Step S402, the device is powered on and started, and the two dynamic cr...

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Abstract

The invention discloses a method and a system for protection switching, wherein the method comprises the following steps that: a standard subframe or an extended subframe determines the attribute of a protection switching notification event according to a preset strategy; the standard subframe or the extended subframe sends the protection switching notification event to service units andother subframes inside the standard subframe or the extended subframe according to the determined attribute of the protection switching notification event; and the first service unit and the second service unit perform the selection of transmission entities according to the protection switching notification event. The technical proposal can correctly perform protection switching, and solve the problems of switching deadlock or error switching caused by using a pure sustainable event or transient event to notify the protection switching at the same time.

Description

technical field [0001] The present invention relates to the communication field, and in particular, relates to a protection switching method and system. Background technique [0002] In related technologies, in order to expand the ability of uplink and downlink low-speed services (services performed through tributary boards or low-speed optical boards) in Synchronous Digital Hierarchy (abbreviated as SDH) transmission equipment, a traditional SDH equipment is expanded. A subrack is an extended subrack. At present, the function design of the expansion subrack is relatively simple, there is no corresponding network element control unit and dynamic cross-connect unit, only a simple expansion control unit. The management control information and service information of the extended subrack are negotiated and implemented by the network element control unit of the standard subrack, the dynamic cross-connect unit and the extended control unit of the extended subrack. The dynamic cr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/08H04B1/74
Inventor 唐思诚
Owner ZTE CORP
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