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Method of transmitting client information in optical transmisstion network and transmission device

A technology of customer signal and transmission equipment, which is applied in the field of optical communication, can solve the problem of low utilization rate of optical fiber bandwidth and achieve the effect of improving utilization efficiency

Inactive Publication Date: 2013-01-23
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Embodiments of the present invention provide a method and equipment for transmitting client signals in an optical transport network, so as to solve the problem in the prior art that the OTU adopts a fixed rate and the utilization rate of optical fiber bandwidth is not high

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  • Method of transmitting client information in optical transmisstion network and transmission device
  • Method of transmitting client information in optical transmisstion network and transmission device
  • Method of transmitting client information in optical transmisstion network and transmission device

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Embodiment Construction

[0023]According to the G.709 standard issued by ITU-T (International Telecommunication Union-Telecommunication Standardization Sector, International Telecommunication Union Telecommunication Standardization Sector) in February 2012, four low-order optical channel data units are defined in the existing OTN technology, which are ODU1, ODU2, ODU3, and low-order flexible ODUflex, the embodiment of the present invention introduces HO ODUflex (High Order Optical channel Data Unit flex, high-order flexible optical channel data unit) on the basis of the existing low-order ODUflex, and introduces After HOODUflex, ODU4 can also be multiplexed into HO ODUflex as a low-order ODU. For the sake of distinction, the above-mentioned five ODUs of ODU1, ODU2, ODU3, ODU4 and low-order flexible ODUflex are collectively referred to as LO ODU (Low Order Optical channel Data Unit, low-order optical channel data unit).

[0024] Such as Figure 1B As shown, the HO ODUflex frame structure defined by th...

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Abstract

The invention relates to a method of transmitting client information in an optical transmission network and a transmission device. The method comprises the steps of dividing the payload of a high-order agile optical channel data unit HOODUflex into n time slots, wherein the n is a natural number, the speed grade of an agile optical channel transmission unit corresponding to the HOODUflex is n times of GS, and the GS is a preset speed value; mapping a client signal to LOODU, multiplexing the LOODU to the HOODUflex, adding FEC data in the HOODUflex to generate OTUflex. In the embodiment of the invention, the client signal is mapped to the LOODU, the LOODU is multiplexed to the HOODUflex, forward error correction FEC data is added in the HOODUflex to generate the OTUflex, and the OTUflex is divided into n data channels of which the speed is GS for transmission. In the embodiment of the invention, by constructing the HOODUflex, various LOODU can be multiplexed in the HOODUflex, and by employing the corresponding OTUflex to carry out agile speed transmission on data, the utilization ratio of an optical fiber bandwidth in the optical transmission network is improved.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a method and transmission equipment for transmitting client signals in an optical transmission network. Background technique [0002] OTN (Optical Transport Network, Optical Transport Network) is the core technology of the transport network. OTN has rich OAM (Operation Administration and Maintenance, operation management and maintenance), powerful TCM (Tandem Connection Monitoring, tandem connection monitoring) capabilities and out-of-band The FEC (Forward Error Correction) capability can realize flexible scheduling and management of large-capacity services. [0003] The OTN standard system defines four OTUs (Optical channel Transport Unit) with fixed line rates, namely OTU1, OTU2, OTU3, and OTU4, and their line rates are 2.5G, 10G, 40G, and 100G. The unit is bit / s, that is, bits per second. The four OTUs respectively correspond to four ODUs (Optical channel Data ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00H04L1/00
CPCH04Q11/00H04J3/1652H04Q2213/1301
Inventor 董立民吴秋游苏伟
Owner HUAWEI TECH CO LTD
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