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A method for identifying ODU with different mapping rates of OTN signals

An identification method and ODU technology, applied in the direction of electrical components, multiplexing system selection devices, transmission systems, etc., can solve the problems of limited application, and achieve the effects of simple processing, strong adaptability, and strong versatility

Active Publication Date: 2022-06-03
电信科学技术第五研究所有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its technical solution is to group by JC information. This technical solution identifies specific scenarios and its application is limited.

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  • A method for identifying ODU with different mapping rates of OTN signals
  • A method for identifying ODU with different mapping rates of OTN signals
  • A method for identifying ODU with different mapping rates of OTN signals

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings:

[0024] as attached figure 1 As shown, a method for identifying ODUs with different mapping rates of OTN signals of the present invention includes:

[0025] Overhead information preprocessing: According to the JC information in the ODU4 OPUk overhead, the number of ODUj structure objects mapped in ODU4, the logical TS with the largest number occupied by each structure object ODUj, and the GMP adjustment control information of each structure object ODUj are obtained; GMP adjustment control information uses Remove padding blocks when ODU4 parses ODUj;

[0026] FAS TS position analysis: The FAS scanning position information of different ODUj is predicted by adjusting the control information of ODUk, and at the same time, strong judgment is made through iterative matching, and the logical TS occupied by its structural objects is confirmed according to the distribution law...

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Abstract

The invention discloses an ODU identification method with different mapping rates of OTN signals, comprising: overhead information preprocessing; FASTS position analysis; MFASTS position analysis; remaining TS analysis. The present invention is based on predictive line spacing scanning FAS and iterative matching, and has relatively strong versatility, high accuracy, and relatively simple processing; it can effectively identify and process the mapped ODU0 / ODU1 / ODU3 regardless of single or multiple mixtures; MFAS is performed based on determining the FAS position Scanning matching design and ODUj normative design based on combined remaining TS analysis are suitable for relatively complex ODU2 identification and complete the identification of all different ODUj; effectively analyze OTN lines and can map OTN even when OTNMSI information is invalid The identification of structural objects has very important application value.

Description

technical field [0001] The invention relates to a method for identifying ODUs with different mapping rates of OTN signals. Background technique [0002] According to the OTN (Optical Transport Network, Optical Transport Network) standard technical protocol description, the entire ODUk frame is a 4*3824 matrix block, and the first 14 columns of the first row are FAS (Frame Alignment Signal) / MFAS (MultiFrameAlignment Signal) / OTUk (Optical Transport Unit-k) overhead, two columns 15 and 16 are OPUkoverhead (optical channel payload unit k overhead). The entire ODUk (Optical Data Unit-k, optical data unit) frame matrix block after 17 columns is an OPUk (Optical Payload Unit-k) payload (payload) area. For ODU4 (ODU: Optical Data Unit), columns 3817 to 3824 are fixed padding fields. ODUk (Optical DataUnit-k) with different rates has the size of FS (Fixed stuff, fixed stuffing) field, the depth of MSI (Multiplex Structure Identifier, multiplex structure identifier), the method of J...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q11/00H04L69/22
CPCH04Q11/0062H04Q11/0067H04L69/22
Inventor 雷红海钟良志康珑耀侯浩东
Owner 电信科学技术第五研究所有限公司