Method, device and network system for transporting optical transport unit (OTU) by optical transport network (OTN)

A technology of transmission unit and optical transport network, which is applied in the field of communication, can solve problems such as channel quality degradation such as sliding codes, and achieve the effect of convenient and accurate transmission

Inactive Publication Date: 2010-03-31
HUAWEI TECH CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] In the process of realizing the above-mentioned transmission of information between networks, the inventors found that there are at least the following problems in the prior art: in the transmission process, OTUj is transmitted through ODUj, and the management overhead is transmitted through OTUk. When restoring OTUj, OTUj and The transmission rate of OTUk is not the same, which will cause the problem of channel quality degradation such as slip code

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  • Method, device and network system for transporting optical transport unit (OTU) by optical transport network (OTN)
  • Method, device and network system for transporting optical transport unit (OTU) by optical transport network (OTN)
  • Method, device and network system for transporting optical transport unit (OTU) by optical transport network (OTN)

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Embodiment Construction

[0026] The embodiments of the present invention are applicable to the transmission processing scene of the OTN network system, especially to the scene of intercommunication between multiple OTN management domains. The following embodiments illustrate the present invention by taking the application in cross-OTN management domains as an example. see figure 1 , Operator B has two networks B1 and B2 respectively in two places. Operator B leases the network transmission channel of operator A, and operator B connects networks B1 and B2 through the leased transmission channel. The management overhead between each adjacent node in the networks B1, B2, and A is stored in the overhead area of ​​the optical transmission frame of each network. In order to manage the networks B1 and B2 as a whole, the operator B needs to transmit the optical transmission frame overhead of the OTUs in the networks B1 and B2 in the network of the operator A. In this embodiment, the management overhead of t...

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Abstract

The invention discloses a method, a device and a network system for transporting an optical transport unit (OTU) by an optical transport network (OTN), relating to the network field and solving the problems of slide code channel quality degradation, and the like caused by different overload rates of optical data transmission frames in the prior art. The method provided by the technical scheme comprises the following steps: at a source node, mapping a received OTUj and data to be sent by a local OTN into an OTUk of the local OTN for transmission; and at a host node, de-mapping and transformingthe OTUk into the OTUj and extracting the carried data, wherein j and k respectively represent the rate grades of the OTU. The invention can be applied to transporting information among networks.

Description

technical field [0001] The invention relates to the transmission technology in the communication field, in particular to a transmission method and device for an optical transmission network. Background technique [0002] Optical Transport Network (OTN) is a new transport bearer network proposed by ITU Telecommunication Standardization Sector (ITU-T) in 1998. Compared with the previous Synchronous Digital Hierarchy (SDH) transport network, OTN network has high bandwidth and is suitable for WDM Advantages such as multiplexing (WDM) transmission and WDM transmission network management can well carry the next-generation broadband communication network. [0003] As the OTN network is gradually accepted and configured by operators, in order to realize the data transmission of different management domains in a multi-device vendor and multi-operator network environment, a method of transmitting optical channel transport unit OTU through optical transport network OTN is proposed. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00H04L1/00
Inventor 向晖崔秀国
Owner HUAWEI TECH CO LTD
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