Linear variable bandwidth clock tracking method and device in otn network

A variable bandwidth and linear technology, applied in the field of linear variable bandwidth clock tracking, can solve the problems of buffer read and write frequency difference, buffer overflow, service damage, etc., and achieve the effect of maintaining service, avoiding frequency difference, and maintaining lossless.

Active Publication Date: 2015-09-02
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] When performing ODUflex BWR, the conversion process of clock information will introduce delay, which will cause frequency difference in buffer reading and writing, resulting in buffer overflow and service damage

Method used

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  • Linear variable bandwidth clock tracking method and device in otn network
  • Linear variable bandwidth clock tracking method and device in otn network
  • Linear variable bandwidth clock tracking method and device in otn network

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0035] Before introducing the linear variable bandwidth clock tracking method provided by the present invention, at first the basic knowledge of the present invention is briefly introduced:

[0036] The execution process of linear bandwidth adjustment is for the user to set the initial bandwidth, the target bandwidth and the bandwidth change rate. After the start command is issued, the bandwidth increases or decreases linearly to the target bandwidth. For example: If the initial bandwidth is 1.25G, the target bandwidth is 40G, and the bandwidth change is 1 byte / 100μs, after issuing the startup name, the bandwidth will start from 1.25G, and every 100μs will send 1 byte more than the previous 100μs , stop until the sending bandwidth is e...

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Abstract

Disclosed are a method and a device for tracking a linear variable bandwidth clock in an OTN network, which belong to the field of optical transport networks. The method comprises: an intermediate node receiving a high order optical data unit HO-ODUk and reading a bandwidth adjustment identifier BWR_IND in the HO-ODUk, the BWR_IND being used to indicate a bandwidth adjustment status of a flexible rate optical data unit ODUflex; and the intermediate node compensating for a linear variable bandwidth clock of the intermediate node according to the bandwidth adjustment status of the ODUflex and a preset bandwidth variation rate of the ODUflex. The device comprises: a receiving module and a compensation module.

Description

technical field [0001] The invention relates to the field of optical transport network, in particular to a method and device for linear variable bandwidth clock tracking in an OTN network. Background technique [0002] In the OTN (Optical Transport Network, Optical Transport Network) network, there is a container defined as a flexible rate optical digital unit ODUflex. This container supports variable bandwidth and is used to carry different customer services. However, since ODUflex cannot output an optical port, it needs to be mapped For transmission to high-order ODUk, the number of high-order time slots occupied by the container can be adjusted from the minimum to the maximum. For example, the high-order is ODU3, and the ODUflex bandwidth supports adjustment from 1.25Gbps to 40Gbps. BWR (Bandwidth Resize, bandwidth adjustment) is performed on ODUflex During the process, it is required that no business damage occurs. [0003] After analyzing the prior art, the inventor fi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/06H04L25/03H04Q11/00
CPCH04J3/1664H04J2203/0067H04J3/0623
Inventor 吴德亮
Owner HUAWEI TECH CO LTD
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