OLP channel protection switching method based on OTN surplus waves
A technology of channel protection and automatic protection switching, applied in the field of optical transmission, which can solve problems such as potential safety hazards, user complaints, business interruption, etc., and achieve the effects of easy discovery of problems, provision of versatility, and improvement of research versatility
Active Publication Date: 2020-04-28
STATE GRID CORP OF CHINA +1
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Problems solved by technology
But at the same time, the introduction of the optical path automatic switching protection system has also brought new security risks to the operation and maintenance of the existing network. Constant switching causes frequent business interruptions and user complaints
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[0033] In order to make the purpose of the present invention, technical solutions and advantages clearer, the following combination figure 1 and specific examples to clearly and completely describe the invention.
[0034] Such as figure 1 As shown, the present embodiment 1 relates to a method for OLP channel protection switching based on OTN residual wave, which includes:
[0035] Step (1), install optical fiber line automatic protection switching devices and wavelength conversion devices in pairs between the main and backup routes of two adjacent SDH systems;
[0036] Step (2), the luminescent signal T of the main and backup routes of the SDH system X Connect to the automatic protection switching device of the optical fiber line, and the luminous signal T X One is divided into two, one is connected to the receiving end of the optical fiber line automatic protection switching device at the opposite end, and the other is connected to the wavelength conversion device;
[003...
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The invention relates to an OLP channel protection switching method based on OTN surplus waves. The OLP channel protection switching method comprises: (1) installing optical fiber line automatic protection switching devices and wavelength conversion devices between main and standby routes of an SDH system in pairs; (2) accessing light-emitting signals TX of main and standby routes of the SDH system to an optical fiber line automatic protection switching device, and outputs of the light-emitting signals TX being respectively accessed to the optical fiber line automatic protection switching device and a wavelength conversion device at opposite ends; (3) the wavelength conversion device converting the light waves, outputting the converted light waves to an MCU combiner, and transmitting the light waves to a DEMUX wave separator; (4) the output of the DEMUX wave separator passing through the wavelength conversion device at the opposite end and then being output to the optical fiber line automatic protection switching device at the opposite end; the SDH system main and standby route at the opposite end receiving a light receiving signal RX of the adjacent optical fiber line automatic protection switching device; if the main line fails, realizing standby protection through standby OTN surplus waves. Through multiplexing of OTN surplus waves, a single pair of optical cables is used, and the protection problem of dozens of OLP standby channels is solved.
Description
technical field [0001] The invention relates to an OLP channel protection switching method based on OTN residual waves, which belongs to the field of optical path transmission. Background technique [0002] In recent years, with the rapid growth of power grid data services and the emergence of new large-capacity integrated data bearer networks and dispatching data networks, new requirements have been put forward for the backbone transmission network. For large-capacity data services, SDH technology is , Adaptation, and bearer efficiency are obviously insufficient; Wavelength Division Multiplexing (WDM) technology cannot provide flexible service transmission and scheduling, cannot achieve high reliability and maintainability of the network, and has certain functional defects. [0003] At present, as the main carrier of electric power communication, optical cable carries important services such as relay protection, dispatching data network, and data communication network. The...
Claims
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IPC IPC(8): H04J14/02H04B10/032
CPCH04B10/032H04J14/0294
Inventor 赵炜张志钦孟显刘文昭季名扬杨会峰孔明刘彦君苏汉张合明李英敏于冰洋崔俊彬黄镜宇曹明
Owner STATE GRID CORP OF CHINA