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Method, system and equipment for protecting rearrange

A technology of protection switching and service protection, applied in the field of network communication, can solve the problem of long protection switching time of PON system transmission path, and achieve the effect of improving performance and fast protection switching

Active Publication Date: 2009-03-04
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a protection switching method, system and equipment to solve the problem that the protection switching time of the PON system transmission path is too long in the prior art

Method used

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  • Method, system and equipment for protecting rearrange
  • Method, system and equipment for protecting rearrange
  • Method, system and equipment for protecting rearrange

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Embodiment Construction

[0026] A detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0027] Such as image 3 as shown, image 3 It is a flow chart of a method for protection switching according to an embodiment of the present invention, and the method for protection switching mainly includes the following steps:

[0028] Step 301 , measure the distance between the active path and the standby path of at least one optical network unit in the passive optical network system to obtain the round-trip time difference between the active path and the standby path.

[0029] In the embodiment of the present invention, taking the ranging of only one optical network unit's active path and backup path as an example, the OLT performs ranging operations through the active path and the backup path of the ONU respectively, and obtains the corresponding active path and backup path RTT (Round-trip Time, round-trip time), so that the RTT difference between ...

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Abstract

The invention discloses a method for protecting rearrangement, which comprises the steps of: carrying out data measuring to a primary path and an alternate path of at least one optical network unit (ONU) in a passive optical network system so as to obtain a round trip time difference value between the primary path and the alternate path; obtaining the adjustment time of the alternate path in eachONU in the passive optical network system according to the round trip time difference value; and when the primary path goes wrong, according to the adjustment time, the service is rearranged into thealternate path. The invention also provides a system and a device for protecting the rearrangement, which can realize rapid protective rearrangement of the service when the primary path goes wrong, thus improving the performance of protecting the rearrangement.

Description

technical field [0001] The present invention relates to the technical field of network communication, in particular to a protection switching method, system and equipment. Background technique [0002] In recent years, with the rapid development of the Internet and the popularization of personal computers, the data streams transmitted on the Internet have increased dramatically, and with the rapid development of IPTV (Internet Protocol Television, Interactive Network Television), HDTV (High Definition Television, high-definition television), etc. With the rise of multimedia services and the growth of some data services, people have higher and higher requirements for access bandwidth. Today's access network has a very obvious trend of "optical in and copper out", because the traditional copper cable access method can no longer meet the needs of the growth of communication services in the Internet, and optical fiber has transmission frequency bandwidth, large capacity, low los...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/22H04J3/08
Inventor 徐晓庚周建林
Owner HUAWEI TECH CO LTD
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