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Data transmission method and device of optical transmission layer

A data transmission method and an optical transmission layer technology, which are applied in the field of data transmission methods and devices at the optical transmission layer, can solve the problems of poor reusability of channel bandwidth, low utilization rate of line-side channel bandwidth, and inability to protect line-side service channels and other problems to achieve the effect of solving the low bandwidth utilization

Active Publication Date: 2010-10-06
北京中兴光泰软件有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The inventors found that in the above several protection methods, when the service channel is normal, the protection channel either does not transmit the service, or transmits the same service as the service channel, or transmits additional services, and each service channel is independent of each other, resulting in The channel bandwidth utilization rate on the line side is not high, the channel bandwidth reusability is not strong, and these protection methods cannot protect all service channels on the line side

Method used

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  • Data transmission method and device of optical transmission layer
  • Data transmission method and device of optical transmission layer
  • Data transmission method and device of optical transmission layer

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Embodiment 1

[0026] figure 2 It is a flowchart of the data transmission method of the optical transmission layer in this embodiment, and the method mainly includes the following steps (step S202-step S204):

[0027] Step S202, setting available channels on the line side of the optical transport layer in an aggregation group;

[0028] In practical applications, such as image 3 As shown, the channel on the line side consists of the transmission channel between the Layer 2 switching port on the Layer 2 switching unit and the Optical Transport Network (Optical Transmit Net, referred to as OTN) transmission unit, and the OTN between the OTN transmission unit and the Optical Transport Network. layer channel connections.

[0029] When setting up an aggregation group, the line-side ports can be configured under the same aggregation group according to the transmission quality of the line-side channel, where the transmission quality of the line-side channel can be checked by the alarm of the OTN...

Embodiment 2

[0037] Figure 5 It is a schematic structural diagram of the Layer 2 switching unit in this embodiment. In this embodiment, the Layer 2 switching unit further includes: a main control module 44 and a detection module 46 . Among them, the main control module 44 is used to configure the above-mentioned aggregation group; the detection module 46 is used to poll the alarm information of each OTN layer channel and the status information of the transmission channel between each layer 2 switch port and the OTN transmission unit; aggregation management The module 40 is used to bind the Layer 2 switch port whose transmission channel with the OTN transmission unit is in a connected state and whose corresponding OTN layer channel has no alarm information to the aggregation group configured by the main control module 44 .

[0038] In a preferred embodiment of the present invention, the main control module 44 is also used to set the corresponding OTN layer channel to have alarm information...

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Abstract

The invention discloses data transmission method and device of an optical transmission layer. The data transmission method comprises the following steps of: arranging an available channel at the line side of the optical transmission layer in an aggregation group; and transmitting service data of the customer side between a two-layer switching unit and an optical transmission network through the available channel in the aggregation group. The invention can fully utilize all wavelength channels at all line sides and protect Ethernet service of channels at all line sides.

Description

technical field [0001] The present invention relates to the field of communications, in particular to a data transmission method and device for an optical transmission layer. Background technique [0002] At present, in the Dense Wavelength Division Multiplex (DWDM for short) system, for the optical transmission layer of the backbone network, the line side channel mainly uses 1+1, 1:1 or 1:N protection methods to improve link reliability. [0003] The 1+1 protection mode means that the same information is sent on the active and standby channels (concurrently), and the receiving end chooses to receive services on the active channel under normal circumstances. Since the services on the main and standby channels are the same, when the main channel is damaged, the main service can be restored by switching and selecting to receive the services on the standby channel; [0004] The 1:1 protection mode means that in normal times, the sender sends the main service on the main chann...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00H04L12/56
CPCH04L12/2861H04Q11/0062
Inventor 刘冠葳刘新菊钱方正姜维
Owner 北京中兴光泰软件有限责任公司