KR20010057098A - Trunk traffic analysis method for PSTN intelligent job-scheduling - Google Patents

Abstract

PURPOSE: A method of analyzing a trunk group in telephone network is provided to economically install and operate the trunk group by using the traffic analyzing method with respect to the directional trunk group of the fixed alternate routing, which is widely used in the telephone network. CONSTITUTION: Transport traffics of two trunk groups are added every hour with respect to the data measured. Through the transport traffics added every hour and the number of lines added, an imposed traffic is estimated. The imposed traffic detects the value which is satisfying the following equation: transport traffic = imposed traffic x (1 - E(A,N)) (Here, E is Erlang B formular. A is the imposed traffic. N is the number of lines). Based on the imposed traffic detected, the monthly pilot value is calculated according to the busy hour determination method, and is set as a standard traffic. The number of the line is obtained by using the standard traffic and allocated to each trunk group at a proper rate.

Description

Trunk traffic analysis method for PSTN intelligent job-scheduling}

The present invention relates to a method for analyzing relay line traffic in a telephone network for applying to trunk servicing and forecasting with interstate relay traffic data measured 24 hours per day in an exchange in a telephone network. The present invention relates to a method for economically installing and operating a relay network by providing a method of analyzing traffic for a directional trunk group of fixed alternate routing widely used in a telephone network.

In general, the main content of the trunk line management in the telephone network is to collect and analyze traffic data to determine whether an appropriate grade of service (GOS) is satisfied, and if not, take measures such as line extension. It also predicts future traffic levels and takes precautionary measures before problems occur to maintain a certain level of service quality.

In the conventional method for this, the analysis was performed by treating each relay group independently regardless of the configuration of the relay line group. However, as the network situation becomes complicated and functions are limited according to the exchange, recently, various types of relay lines such as a dual relay line group as shown in FIG. 1 and a divided relay line group as shown in FIG. 4 have been operated. If the existing method is applied to the repeater group operating in this form, an error occurs in calculating the hawthorn rate and the number of circuits.

The dualized trunk line group of FIG. 1 (a) is configured such that the call generated at the exchanger A is via the A-T1 or A-T2 relay line group. The measured values in Fig. 1 (a) are PC1, PC2, OV1, OV2, U1, U2, where PC represents a trial (exclusion) number and OV represents an excess (loss) number.

Measurements in Fig. 1 (b) include U = U1 + U2, N = N1 + N2, where U represents a transport traffic and N represents the number of circuits.

FIG. 2 is a diagram illustrating a call loss processing process of a general dualization interval, wherein each measurement value for trial calls P1 and P2 is PC1 = (P1 + V2), U1, OV1 = (V1 + L1), and

PC2 = (P2 + V1), U2, OV2 = (V2 + L2).

Where P represents the actual trial (excitation) number, PC represents the measurement trial (exclusion) number, OV represents the excess measurement number, L represents the loss number, V represents the bypass number, and U represents the measurement transport traffic. And N represents the number of circuits.

Among the calls PC1 arriving at the first relay line group, the call V1, which cannot be processed due to lack of equipment, is bypassed to another relay line group, and if it is not processed, the loss L2 is processed. The same procedure applies if another trunk group is selected first.

Traffic measurements are measured in excess number (OV), with no distinction between bypassed and lost calls, and so does the number of calls (PC).

The problem is that if we apply the existing method, each loss rate is calculated as OV1 / PC1, OV2 / PC2 and use it to calculate the imposed traffic and the number of circuits. However, the ratio of actual lost calls in this interval is (L1 + L2) / (P1 + P2), and it is impossible to accurately estimate this value from the measurements. However, since the transport traffic (U) is not affected by the mutual bypass effect, it is possible to estimate the total hawthorn rate of the binarization interval more accurately by changing the model as shown in FIG.

FIG. 3 uses the same scheme as in FIG. 2 except that it bypasses the ternized relay line.

Referring to the divided relay line group of FIG. 4 (a), the conventional method manages 'HR (High-hsage Route)' and 'Final Route' according to each 'GOS (Grade of service') standard. If there is primary route traffic in FR, Network Cluster method can be applied. However, in such a configuration, since primary route traffic is not generally imposed on the FR, it is more economical in terms of facility investment to calculate traffic by integrating them as a dualization rather than treating them individually.

In the case of traffic prediction, in this case, it is superior to the conventional method in terms of the accuracy of the prediction because the prediction with the sum of traffic of two sections reflects the change of the actual traffic, rather than separately predicting each relay line group.

Fig. 4 (b) is identical to Fig. 4 (a) except that it only bypasses each other.

The present invention provides a method for calculating the appropriate number of circuits for the trunk line group operating in various forms, such as a dual relay group, a divided trunk group as described above, or for calculating traffic as a reference for predicting traffic. The purpose.

1A to 1B show an example of a generalized dual relay line group.

2 is a diagram illustrating a general dualization relay line group loss loss concept.

3 is a view showing an example of a typical three-way relay line group.

4A to 4B show an example of a general divided relay line group.

In order to achieve the above object, in the relay network traffic method in the telephone network,

A first process of summing transport traffic of the two relay ship groups for the data measured every hour;

A second process of estimating the imposed traffic through the number of circuits summed with the transport traffic summed every hour;

A third step of searching for a value for which the imposed traffic satisfies Equation 1) below;

A fourth process of calculating a monthly representative value based on the retrieved imposed traffic and setting the representative representative traffic as a reference traffic;

And a fifth process of calculating the number of lines using the reference traffic and then allocating the number of lines to each of the relay line groups at an appropriate ratio.

Equation 1)

Carrier Traffic = Imposed Traffic × (1-E (wifi traffic)

Where E (A, N) is the Erlang B formula

In addition, in order to achieve the above object, in the trunk line group traffic method in the telephone network,

A first process of adjusting the traffic and the number of lines as shown in Equation 2) for the data measured every hour;

A second step of estimating the imposed traffic using each value adjusted for each time;

A third process of calculating a monthly representative value based on the estimated imposition traffic and setting the representative representative value as a reference traffic;

And a fourth process of calculating the number of lines using the reference traffic and then allocating the number of lines to each of the relay line groups at an appropriate ratio.

Equation 2)

PC = PC1 (PC: measurement attempt number)

OV = OV2 (OV: Overshoot)

U = U1 + U2 (U: Measurement Transport Traffic)

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The traffic analysis method according to the present invention is divided into a dual relay line group, a split relay line group in which a plurality of relay line groups exist between two large powers. In addition, since the traffic analysis work is usually carried out every month (or four weeks), the data applied to the traffic analysis method of the present invention is for 24 hours a month.

First, the traffic analysis method for the dual relay line group is as follows.

First, the transport traffic of two repeaters is summed (U = U1 + U2) for the data measured every hour.

Subsequently, the transport traffic (U) and the number of lines (N = N1 + N2) added over time are used to estimate the imposed traffic (A) using the Erlang B formula, and U (carrier traffic) = Find A that satisfies A × (1-E (A, N)). Where E (A, N) represents Erlang B's formula.

Based on the imposed traffic A, the monthly representative value is calculated according to the busy time determination method, and this value is used for calculating the number of circuits and traffic prediction as the reference traffic.

The number of lines is then calculated using the Erlang B or Neal-Wilkinson formula with the reference traffic, and the number of lines is distributed to each of the relay lines at an appropriate ratio.

Second, the traffic analysis method for the split relay line group is as follows.

First, adjust the traffic and the number of lines for the data measured every hour as follows.

PC = PC1

OV = OV2

U = U1 + U2

The imposed traffic A is estimated using the PC, OV, and U adjusted for each time (A = U / (1-OV / PC)).

Next, the monthly representative value is calculated according to the busy hour determination method based on the estimated imposed traffic A, and this value is used for calculating the number of circuits and traffic prediction as the reference traffic.

With the reference traffic, the number of circuits is calculated using Erlang B or Neal-Wilkinson's formula, and the number of circuits is distributed to each relay line group at an appropriate ratio.

As described in detail above, the present invention provides a more accurate traffic calculation in relay line management by conceptually integrating and analyzing the limitations of traffic measurement instead of the existing individual traffic analysis for the dualization and split relay group. Through this, it is possible to accurately grasp network performance and maintain proper service quality.

In addition, since the prediction is made with a value that well reflects the characteristics of traffic fluctuations in the traffic prediction, more reliable prediction results can be obtained, thus enabling efficient facility investment.

In addition, preferred embodiments of the present invention are disclosed for the purpose of illustration, those skilled in the art will be able to various modifications, changes, additions, etc. within the spirit and scope of the present invention, such modifications and modifications belong to the following claims You will have to look.

Claims (4)

In the relay network traffic method in the telephone network, A first process of summing transport traffic of the two relay ship groups for the data measured every hour; A second process of estimating the imposed traffic through the number of circuits summed with the transport traffic summed every hour; A third step of searching for a value for which the imposed traffic satisfies Equation 1) below; A fourth process of calculating a monthly representative value based on the retrieved imposed traffic and setting the representative representative value as a reference traffic; And a fifth process of calculating the number of lines using the reference traffic and then allocating the number of lines to each of the relay line groups at an appropriate ratio. Equation 1) Carrier Traffic = Imposed Traffic × (1-E (A, N)) (Where E (A, N) is the Erlang B formula, A: charged traffic, N: Number of lines) The method of claim 1, The dual line relay line traffic analysis method in a telephone network comprising a relay line group in which three relay lines are bypassed to each other or a divided two relay line groups bypass each other. In the relay network traffic method in the telephone network, A first process of adjusting the traffic and the number of lines as shown in Equation 2) for the data measured every hour; A second step of estimating the imposed traffic using each value adjusted for each time; A third process of calculating a monthly representative value based on the estimated imposition traffic and setting the representative representative value as a reference traffic; And a fourth process of calculating the number of lines using the reference traffic and then allocating the number of lines to each of the relay line groups at an appropriate ratio. Equation 2) PC = PC1 (PC: measurement attempt number) OV = OV2 (OV: Overshoot) U = U1 + U2 (U: Measurement Transport Traffic) The method of claim 3, wherein The segmented trunk line traffic analysis method in the telephone network, characterized in that the estimation of the imposed traffic in the second process by 'buoy traffic = U / (1-OV / PC)'.