Virtual cascade link processing method and system

A processing method and technology of a processing system, applied in the field of virtual cascade link processing methods and systems, can solve the problems of high cost and large chip resources, and achieve the effects of avoiding long time, small chip resources and low realization cost.

Inactive Publication Date: 2006-11-08
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a low-cost virtual cascade link processing method and system to solve the problem of large chip resources and high cost in the prior art

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  • Virtual cascade link processing method and system
  • Virtual cascade link processing method and system
  • Virtual cascade link processing method and system

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Embodiment Construction

[0044] Below according to accompanying drawing and embodiment the present invention will be described in further detail:

[0045] according to figure 1 , the present invention includes extraction module 1, sorting module 2, linking module 3 and demapping module 4, such as figure 1As shown, the extraction module 1 extracts the overhead bytes in the data stream, that is, the H4 / K4 bytes, obtains the multiframe indication MFI information and sends it to the sorting module 2, and the sorting module 2 according to the processing information of the extracting module 1, according to the The control field CTRL and the serial number indication field SQ information of the control field, the members in the same logical channel are sorted to generate a channel table, the link module 3 saves the demapping table, and the linking module 3 writes the effective time slot of the channel table into the demapping table , and perform corresponding conversion and update processing on the content i...

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Abstract

This invention relates to a process method and a system for virtual cascade links including: A, picking up related information bytes in a data flow to get MFI information then to obtain a control domain and a sequence number instruction domain based on the MFI, B, sequencing members in a same logic cbannel in the virtual cascade LCAS frame to generate a chanel list and write the effect time slot in it into a de-image list then to de-image the SDH / SONET data to the logic chanel.The system includes a pick-up module characterizing in also including a sequencing module, a linking module and a de-image module, in which, the sequencing module generates a channel list based on the process information of the pick-up module, the linking module keeps the de-image list and writes the effect time slot of the channel list into the de-image list and converts and refreshes the content in it and the de-image module de-images the synchronous digital system SDH / SONET data to the logic channel based on the main link in the de-image list.

Description

technical field [0001] The present invention relates to electric communication technology, in particular to a virtual cascade link processing method and system. Background technique [0002] With the rapid growth of data services, new requirements are put forward for the transmission network. SDH (Synchronous Digital Hierarchy) / SONET (Synchronous Optical Network, Synchronous Optical Network) uses virtual concatenation and link capacity adjustment methods, which can To solve the demand for high bandwidth and flexible bandwidth adjustment of data services, the adjustment of virtual concatenation bandwidth needs to be completed by information interaction between the source end and the sink end according to the state machine of the Link Capacity Adjustment Scheme (LCAS: LinkCapacity Adjustment Scheme) protocol. In the prior art, the virtual concatenation LCAS receiving end mainly obtains the multiframe indication (MFI: Multiframe Indication) information by extracting the H4 / K4 b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/16
Inventor 樊进国陈利
Owner HUAWEI TECH CO LTD
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