Method and system for detecting degradation condition of link signal
A signal degradation and link technology, applied in the field of optical networks, can solve the problems of inaccuracy, excessive CV frame count statistics, prolonged execution time of statistical tasks, etc., and achieve the effect of accurate judgment results.
Active Publication Date: 2015-11-25
FENGHUO COMM SCI & TECH CO LTD +1
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] The technical problem to be solved by the present invention is to solve the existing technology to count the number of CV frames according to the execution cycle and times of the statistical task, and compare it with the theoretical count value to judge whether there is signal degradation in the transmission link, because the execution time of the statistical task will be Prolonged by interference, resulting in too many CV frame count statistics, the problem that the judgment result of transmission link signal degradation is not accurate enough
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
[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0024] The embodiment of the present invention provides a method for detecting the degradation state of link signals. By performing the CV frame counting statistics task, when the execution times reach the theoretical execution times, record the CV frame count sum and the actual execution time, and judge the difference between the CV frame count sum and the actual execution time. Whether the ratio of the execution time is less than the ratio of the theoretical CV frame count to the theoretical execution time, if it is less, it is determined that the link has signal degradation, triggers a signal degradation alarm, establishes a discard flow, and then discards the VP (Virtual, Path, virtual path) layer CV frame mode, triggers the protection switching through the link, and deletes the discarded flow after the signal degradation alarm disappears,...
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 system for detecting a degradation condition of a link signal. The method comprises: ensuring that a link has no relevant port alarm and activating VS layer CV frame enabling; performing CV frame statistic counting, and recording a CV frame count and actual performing time when the times of performing reach theoretical performing times; when a ratio of the CV frame count to actual performing time is smaller than a ratio of a theoretical CV frame count to theoretical performing time, determining link signal degradation, triggering a signal degradation alarm and discarding VP layer CV frames via the alarm port; otherwise, determining that the link is free from signal degradation and recovering VP layer CV frame transmission. According to the method, whether signal degradation occurs in the link is judged by comparing the ratio of the CV frame count to the actual performing time with the ratio of the theoretical CV frame count to the theoretical performing time; besides, the statistical accuracy is improved by increasing a CV frame transmission speed, and a theoretical CV frame count sum is adjusted according to actual link quality, and therefore, the judgment result of link signal degradation is more accurate.
Description
technical field [0001] The invention relates to the technical field of optical networks, in particular to a method and system for detecting the degradation state of link signals. Background technique [0002] The CC (ContinuitycheckandConnectivityVerification, continuity detection and connectivity verification) function works in active mode, the source MEP (MEGEndPoint, MEG endpoint) periodically sends OAM (OperationAdministrationandMaintenance, operation, management and maintenance) messages, and the sink MEP detects the two maintenance endpoints Loss of continuity (LOC, lossofcontinuity) faults between them, as well as connectivity faults such as mis-merging and mis-connection. [0003] The frame that transmits CC information is a CV frame. As a proactive OAM, it can be used for fault management, performance monitoring, and protection switching to detect continuity loss faults between any pair of MEPs in the same MEG (MaintenanceEntityGroup, Management Entity Group) domain...
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): H04L12/26H04B10/07
Inventor 韩亚雷曹训灿
Owner FENGHUO COMM SCI & TECH CO LTD