Method for improving protective conversion stability of optical synchronization digital transmission device
An optical synchronous digital and transmission equipment technology, applied in transmission systems, electrical components, time-division multiplexing systems, etc. problems, to achieve the effect of improving protection switching efficiency, reducing service interruption time, and improving reliability
Inactive Publication Date: 2011-03-02
ZTE CORP
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[0002] At present, SDH equipment generally implements various protection switching functions according to ITU-T standards, but due to the limitations of various hardware environments, the performance of protection switching is sometimes not ideal, especially when testing the performance of SDH protection with laser off , affected by individual differences in optical devices, such as the speed of optical signal attenuation and the sensitivity of optical devices to optical signal detection, have a greater impact on the performance of SDH protection, and may affect the reliability of services carried by SDH transmission in severe cases
These actual conditions are not considered in the current protocol standards. SDH equipment manufacturers generally improve by improving the reliability of optical devices. The process complexity is high, and the stability and reliability are difficult to guarantee.
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[0011] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0012] In an embodiment of the present invention, figure 1 It shows a method for improving the protection switching stability of an optical synchronous digital transmission device by turning off the laser, which includes the following steps: Step S102, the first optical synchronous digital transmission device receives a control command to turn off the laser, and sends the second optical synchronous digital transmission device Send closing information; step S104, the second optical synchronous digital transmission equipment receives the closing information, and starts the protection switching operation of the optical synchronous digital transmission network; and step ...
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The invention discloses a method for improving the protection switch stability of optical synchronization digital transmission equipment when a laser is shut off, which includes that first optical synchronization digital transmission equipment receives the control command of shutting off the laser and delivers the shutting-off information to second optical synchronization digital transmission equipment, which receives the shutting-off information and starts the protection switch operation of the optical synchronization digital transmission network; and after the second optical synchronizationdigital transmission equipment receives the shutting-off information, the first optical synchronization digital transmission equipment shuts the laser off. The invention can effectively enhance the protection switch efficiency of the optical synchronization digital transmission equipment when the laser is shut off, reduce the service interruption time, and improve the reliability of the optical synchronization digital transmission equipment.
Description
technical field [0001] The invention relates to a method for improving protection switching of an optical synchronous digital transmission system (SDH), in particular to a method for improving the stability of SDH equipment protection switching when lasers are turned off. Background technique [0002] At present, SDH equipment generally implements various protection switching functions according to ITU-T standards, but due to the limitations of various hardware environments, the performance of protection switching is sometimes not ideal, especially when testing the performance of SDH protection with laser off , affected by the individual differences of optical devices, such as the speed of optical signal attenuation and the sensitivity of optical devices to optical signal detection, have a great impact on the performance of SDH protection, and may affect the reliability of SDH transmission services in severe cases. These actual conditions are not considered in the current pr...
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IPC IPC(8): H04J3/08H04B1/74
Inventor 温建中
Owner ZTE CORP