JP2000224264A - Pm data collection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a collection integration time of PM data (performance monitoring). SOLUTION: A function block 1 whose function is divided for each transmission layer divides a signal from a transmission line and terminates them and generates PM data and integrates the data for each end point. When a PM integral value at each termination end point is all zero, that is, when no transmission line error is in existence at all the termination points, the function block 1 sets a zero flag. A PM collection integration block 2 confirms the zero flag of the function block 1 that is an object of collection before collecting and integrating the PM data from each function block 1. The PM collection integration block 2 stops the collection and integration of the PM data from the function block to which the zero flag is set.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a PM data collection device for collecting and integrating PM data in a digital transmission device such as an optical transmission communication device.

[0002]

2. Description of the Related Art Conventionally, in order to provide users with higher quality services of digital communication transmission, PM (Performance Monitoring) for monitoring line conditions recommended or prescribed by the International Telecommunication Union and Bell Laboratories. ) Is known. The PM function is positioned as a function for checking the quality of a signal input to a transmission device or the like that receives a digital signal transmitted from a transmission device on the transmission side.

In an optical transmission communication device, the value of PM data is usually zero when the device is operating normally. In a PM data collection device that collects and integrates PM data, even if the value of the PM data stored in the PM data register is 0, the PM data is read and integrated.

[0004]

As described above, the conventional P
In the M data collection device, even if the value of the PM data register is 0, since the values of all PM data registers are read and integrated, the read time of the PM data register becomes long, and as a result, the PM data However, there is a problem that the collection and integration time of the data becomes long. SUMMARY An advantage of some aspects of the invention is to provide a PM data collection device that can reduce the PM data collection integration time.

[0005]

A PM data collecting apparatus according to the present invention is provided for each transmission layer, divides and terminates a signal from a transmission line, and generates and integrates PM data for each end point. Function block (1) that sets a zero flag when there is no transmission path error at all end points, and checks the zero flag of the function block to be collected before collecting and integrating PM data from each function block And a PM collection and integration block (2) for stopping the collection and integration of PM data from the function block in which the zero flag is set.
And Further, the functional block divides the signal from the transmission line into VC-12 levels, terminates the signal, monitors a transmission error at each end point, and creates PM data and a termination / error detector (11-1 to 11). -N)
And a zero flag register (1
2) and the PM data output from the termination / error detection unit are integrated, and the integration result is held. If the integration result is 0, a zero flag is set, and if the integration result is not 0, the PM data is reset. Register (13-1)
To 13-n).

[0006]

Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a PM data collection device according to an embodiment of the present invention. The PM data collection device of the present embodiment includes a plurality of functional blocks 1 that are functionally divided for each transmission layer, and a PM collection / integration block 2 that collects and integrates PM data from each functional block 1. I have.

Each functional block 1 divides a signal from a transmission line into VC-12s (Virtual Containers, level 12), terminates the signals, monitors transmission errors at the respective endpoints, and generates PM data. Detection units 11-1 to 11-n
And a zero flag register 12 for storing the value of the zero flag.
And integrates the PM data output from the termination / error detection units 11-1 to 11-n, holds the integration result, sets a zero flag when the integration result is 0, and sets a zero flag when the integration result is not 0 And PM data registers 13-1 to 13-n for resetting.

The PM collection and integration block 2 reads out the values of the PM data registers 13-1 to 13-n from each functional block 1, performs integration and holding of the PM data, and sends the data to all the functional blocks in the optical transmission communication device. The same process is performed for collecting and integrating PM values at all end points.

Next, the operation of such a PM data collection device will be described. Termination / error detectors 11-1 to 11-n provided for each end point in each functional block 1 divide the signal from the transmission line into VC-12 levels and terminate the signal. And create PM data.

The PM data registers 13-1 to 13-n, which are also provided for each end point, are provided with a termination / error detection unit 11-.
The PM data output from 1 to 11-n is integrated, and the integration result is held. Each PM data register 13-1
13-n, when the accumulated result is 0,
The value of the zero flag register 12, that is, the zero flag is set, and when the integration result is not 0, the zero flag is reset. Then, each of the PM data registers 13-1 to 13-13
For -n, the same processing is repeated until the integration result is read from the PM collection integration block 2.

Next, before collecting the values of the PM data registers 13-1 to 13-n of each functional block 1, the PM collecting and integrating block 2 stores the value of the zero flag register 12 of the functional block 1 to be collected. Confirm. The PM collection integration block 2 resets the value of the zero flag register 12,
That is, when the zero flag is not set, all the PM data registers 13-1 to 13-1 of the functional block 1 are set.
Data is read from −n, PM data of each terminal point is collected, integrated, and the integration result is held.

When the value of the zero flag register 12 is set, that is, when the zero flag is set, the PM collection and accumulation block 2 stores the PM data from the PM data registers 13-1 to 13-n of the functional block 1. Stop collecting and integrating. The PM collection / integration block 2 performs the same processing for the next function block 1 after completing the collection / integration from one functional block 1 in order to collect and integrate the PM data of all the endpoints in the optical transmission communication device. The PM collection / integration block 2 repeats such an operation, and after completing the collection / integration from all the functional blocks 1 in the optical transmission communication device, returns to the first functional block 1 in which the collection was performed, and returns to P
The collection and integration of the M data are performed again.

In each of the functional blocks 1, when the PM data collection by the PM collection and integration block 2 is completed, the internal PM
Data registers 13-1 to 13-n are all cleared. Thereafter, the functional block 1 restarts the above-described operation.

Here, each of the PM data registers 13-1 to 13-1
13-n sets the zero flag when the accumulated result is 0 and resets the zero flag when the accumulated result is not 0, so that the PM accumulated value at each terminal point in the functional block 1 is 0. , That is, when there is no transmission path error at all termination points, the zero flag register 12
Is set to the set state. When the zero flag is set, the PM collection integration block 2
This functional block 1 is skipped, and processing for the next functional block 1 is started.

As described above, according to the present invention, the load on the PM collection / integration block 2 can be reduced. That is, in the conventional PM data collection device, even if the value of the PM data register is 0, the values of all the PM data registers are read and integrated. However, since the PM data is huge, the conventional PM data collection device
It takes time to read the PM data register. In particular,
In the case of conforming to the latest ITU-T standard, the number of endpoints to be monitored increases, so that it is necessary to shorten the reading time.

Therefore, according to the present invention, if the PM integrated value of all the endpoints in a block divided into functions for each transmission layer is 0, a zero flag is set in this block. By confirming whether or not the zero flag is set, the P which centrally manages PM data in the optical transmission device is determined.
The M collection and accumulation block 2 does not collect and accumulate PM data for the block on which the zero flag is set.
Thereby, the collection efficiency of PM data can be increased, and the load on the PM collection integration block 2 can be reduced.

[0017]

According to the present invention, when monitoring characteristics in a communication device, a zero flag should be set and monitored if there is no transmission path error at all end points of functional blocks divided for each transmission layer. The PM collection and integration block that collects and manages all PM data monitors the zero flag of each functional block, thereby eliminating the need to collect and integrate PM data from functional blocks without transmission path errors. As a result, the time required to read the PM data register can be reduced, so that the time required to collect and accumulate PM data can be reduced, and the processing capability can be improved.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a PM data collection device according to an embodiment of the present invention.

[Explanation of symbols]

1 ... Function block, 2 ... PM collection integration block, 11-
1 to 11-n: termination / error detection unit, 12: zero flag register, 13-1 to 13-n: PM data register.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5K014 AA01 5K028 AA14 BB08 PP12 SS24 5K030 GA14 HB00 JA10 JL03 KA02 MB01 MC07 5K035 AA01 KK01

Claims (2)

[Claims] 1. A PM data collection device for collecting and integrating PM data for quality control of a transmission line in a communication device, wherein the PM data collection device is provided for each transmission layer, divides a signal from the transmission line and terminates the signal. A function block that creates and integrates PM data for each end point and sets a zero flag when there are no transmission line errors at all end points, and collects PM data from each function block before collecting and integrating A PM collection / integration block for confirming a zero flag of a target functional block and stopping the collection and integration of PM data from the functional block in which the zero flag is set. 2. The PM data collection device according to claim 1, wherein the function block divides a signal from a transmission line into VC-12 levels, terminates the signal, monitors a transmission error at each end point, and monitors the PM data. , A zero flag register storing the value of the zero flag, and integrating the PM data output from the terminal / error detector to hold the integration result. When the integration result is 0, the zero flag And a PM data register that resets a zero flag when the integration result is not 0.