Method and device for detecting circuit layer maintenance signals in optical transmission net (OTN) system
A detection method and circuit layer technology, applied in the field of data communication, can solve problems such as inaccurate and reliable detection, inability to enter OTLk-AIS state, exit OTLk-AIS state, etc., to achieve the effect of ensuring reliability and stability
Active Publication Date: 2013-01-30
ZTE CORP
View PDF4 Cites 5 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0019] 1. In the case of non-AIS data signals, it cannot enter the OTLk-AIS state due to the influence of bit errors;
[0020] 2. In the case of AIS data signal, it cannot exit the OTLk-AIS state due to the influence of bit errors
[0021] 3. When the non-AIS data signal changes to the AIS data signal, or the AIS data signal changes to the non-AIS data signal, it cannot be detected accurately and reliably due to the influence of bit errors
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0049] image 3 A method for detecting circuit layer maintenance signals in an optical transmission network system of the present invention is shown, such as image 3 shown, including the following steps:
[0050] The circuit layer maintenance signal is detected to determine whether it enters the alarm indication signal OTLk-AIS access state from the non-alarm indication signal OTLk-AIS state; for example, the present invention can adopt a multi-frame confirmation mode to detect the circuit layer maintenance signal;
[0051] When it is detected that the circuit layer maintenance signal has entered the OTLk-AIS access state, the detection of the OTLk-AIS exit state of the subsequent circuit layer maintenance signal is carried out in consecutive multi-frames;
[0052] If the OTLk-AIS exit state is not detected, the OTLk-AIS alarm operation is performed through the timing alarm mode; if the OTLk-AIS exit state is detected, the OTLk-AIS access state is entered into the non-OTLk-A...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method and a device for detecting circuit layer maintenance signals in an optical transmission net (OTN) system. The method comprises the following steps: detecting circuit layer maintenance signals by a multi-frame confirmation method to determine whether the signals enter from a non-alarm indicator signal OTLk-AIS state to an alarm indicator signal OTLk-AIS admission state; when the circuit layer maintenance signals are detected to enter the OTLk-AIS admission state, carrying out continuous multi-frame OTLk-AIS exiting state detection on the subsequent circuit layer maintenance signals; if the OTLk-AIS exiting state is not detected, carrying out OTLk-AIS alarm operation by a timing alarm method; and if the OTLk-AIS exiting state is detected, carrying out operation from the OTLk-AIS admission state to the non OTLk-AIS state. By the method and device, the reliability and stability of the whole OTN data transmission are ensured.
Description
technical field [0001] The invention relates to the field of data communication, in particular to a method and device for detecting circuit layer maintenance signals in an OTN system. Background technique [0002] The maintenance signal of the Optical Transport Network (OTN: Optical Transport Network) is used for fault isolation and alarm suppression, and is used to reduce the burden of system maintenance. When the optical fiber is interrupted or the bit error rate of data transmission on the line is too high in the OTN network, the OTN device will detect the abnormality of the upstream signal, and insert an alarm maintenance signal to the downstream, and notify the downstream equipment to insert the alarm maintenance signal, which can avoid duplication Only one alarm is reported to the network management system, and the corresponding fault location can be carried out. [0003] In the G709 protocol, the alarm indication signal (AIS: Alarm Indication Signal) is divided into ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/07H04B10/25
Inventor 蔡超黄萌柳谦冯涛
Owner ZTE CORP