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Method and apparatus for transmitting monitoring information in WDM system

A monitoring information and wavelength division multiplexing technology, applied in wavelength division multiplexing systems, transmission monitoring, electromagnetic wave transmission systems, etc., can solve the problems of monitoring information transmission occupation, equipment selection restrictions, wavelength resource encoding and decoding complexity, etc., to reduce Networking costs and the effect of saving wavelength resources

Active Publication Date: 2008-02-27
HUAWEI TECH CO LTD
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Problems solved by technology

[0010] The present invention provides a method and device for transmitting monitoring information in a wavelength division multiplexing system to solve the problem that in the existing WDM system, the monitoring information is transmitted through the dedicated wavelength of the OSC, and the monitoring information transmission occupies limited wavelength resources and is coded. Complicated decoding, limited selection of equipment during capacity expansion, and high networking costs

Method used

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  • Method and apparatus for transmitting monitoring information in WDM system
  • Method and apparatus for transmitting monitoring information in WDM system
  • Method and apparatus for transmitting monitoring information in WDM system

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Embodiment Construction

[0038] The present invention utilizes the OTU with the monitoring information processing function to pass the monitoring information of all units newly added by this station through the vacancy in the overhead byte when the wavelength division is expanded (that is, when the TX / RX unit shown in Figure 1 is added). The bytes are delivered to the destination site without any physical association with other pre-existing OTUs, OSCs.

[0039] This embodiment is mainly described by taking GCC0, GCC1, GCC2 or RES overhead bytes of an OTU conforming to the G.709 protocol to transmit monitoring information as an example.

[0040] The OTU overhead frame format is shown in Figure 2, where the overhead byte RES is a spare byte.

[0041] Referring to Figure 1 and Figure 3, when expanding the capacity of Figure 1, add the OTU with monitoring information processing shown in Figure 3, the OTU mainly includes:

[0042] The optical / electrical conversion unit (O / E), the first signal processing u...

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Abstract

A method for transmitting monitor information in WDM system for transmitting monitor information through overhead byte, which contains obtaining first effect data and converting to second effect data according with overhead sequence which is inserted in overhead data and transmitted to transmission circuit, obtaining second effect data from overhead data transmitted from transmission circuit side, converting said second effect data according with monitoring information sequence and transmitting to destination network monitor and management system. Said invention also discloses a wavelength-converting unit, which contains and photo electricity converting unit, first and second signal process unit, light emitter, light receiver, optical / electrical converting unit and monitor information process unit.

Description

technical field [0001] The invention relates to wavelength division multiplexing (WDM) technology, in particular to a method and device for transmitting monitoring information in the wavelength division multiplexing system. Background technique [0002] With the rapid development of science and technology, the amount of information transmission in the field of communication is expanding at an accelerated rate. The information age requires more and more high-capacity transmission networks. When the optical fibers used for long-distance transmission have been occupied, network operators generally do not consider adding a new optical cable according to the original route, but use the existing optical fibers to expand capacity as much as possible. In modern optical communication networks, wavelength division multiplexing (WDM) technology utilizes the huge bandwidth of the low-loss region of single-mode fiber to mix optical signals of different wavelengths together for transmiss...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J14/02H04B10/12H04B17/00H04B10/07H04B10/25H04L12/24
Inventor 乔士刚
Owner HUAWEI TECH CO LTD
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