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Optical convering unit, transmission system for wavelength division multiplexing and error-code testing method

A forwarding unit and bit error testing technology, which is applied in the field of detection technology, can solve the problems of complex testing process, inconvenient moving of bit error detectors, large network scale, etc., and achieve the effect of improving the level of intelligence

Active Publication Date: 2007-09-05
ZTE CORP
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  • Description
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Problems solved by technology

[0011] For the engineering test site, the test process is complicated, especially when there are many wavelength channels (currently 160 waves have been matured for commercial use, and it is foreseeable that the wavelength channels of the future WDM system will be denser and more), or the network scale is large and the network When there are many nodes, if a large number of OADM technologies are used, more manpower and bit error detectors are required;
[0012] At least one expensive BER tester is required, and the BER tester is inconvenient to move

Method used

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  • Optical convering unit, transmission system for wavelength division multiplexing and error-code testing method
  • Optical convering unit, transmission system for wavelength division multiplexing and error-code testing method
  • Optical convering unit, transmission system for wavelength division multiplexing and error-code testing method

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Embodiment Construction

[0051] The optical forwarding unit of the present invention is shown in Figure 2, and it has increased a frame generator on the basis of conventional optical forwarding unit, makes optical forwarding unit have test frame transmission function, specifically comprises frame sender 11, frame receiver 12, Frame generator 13 and controller 14, wherein:

[0052] The frame transmitter 11 is used to forward the frame signal from the client side to the line side, and is used to forward the test frame from the frame generator 13 in the bit error test state;

[0053] The frame receiver 12 is used to forward the frame signal from the line side to the client side, and is used to check the frame in the bit error test state, and report the error indication to the controller;

[0054] The frame generator 13 is used to generate a test frame signal according to a user-defined or fixed protocol when the optical forwarding unit to which it belongs is in the bit error test state, and send it to th...

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Abstract

The optical repeater unit (ORU) comprises: a frame transmitter, a frame receiver, a controller and a frame generator. The frame generator is used for sending the error-code testing frame to the frame transmitter according to the instruction of the controller; the frame transmitter is used for relaying the test frame; the frame receiver is used to checking the frame and reporting the error-indication to the controller; the controller is used for reporting the checking result and the error-indication. By invention adds a frame generator into the ORU to generate the error-code testing frame which is used to make error-code testing.

Description

technical field [0001] The invention relates to the field of light transmission, in particular to detection technology in the field of light transmission. Background technique [0002] WDM (Wavelength Division Multiplexing, wavelength division multiplexing) technology is to use a single optical fiber to transmit multiple carriers to achieve ultra-large-capacity optical transmission. In recent years, with the rapid development of WDM technology, research on the application of intelligent testing technology related to it has also been launched. According to the recommendations of ITU-T G.826 and ITU-TG.8201, the error performance of SDH (Synchronous Digital Hierarchy, Synchronous Digital Series) and OTN (Optical Transport Network, Optical Transport Network) transmission networks must meet the specification requirements. During the WDM transmission process The bit error rate is also required to meet the system design requirements. [0003] In engineering, external factors suc...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04L12/56H04L12/24H04J14/02
Inventor 沈百林李卓毅安靖
Owner ZTE CORP
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