JPH04117045A - Control system for active line number - Google Patents

Abstract

PURPOSE:To activate the number or lines required from a standby line group in matching with a week and a time zone by allowing a control means to detect in advance a weekday and a time zone when a throughput of each time zone of each weekday exceeds a reference throughput. CONSTITUTION:The above control system is provided with a statistic data storage means 13 receiving and recording a statistic data outputted from a control means 8 able to be connected by plural packet exchanges 4 and an arithmetic means 14 calculating a means value, a standard deviation and a probability density of a throughput at each time zone and at each week data from plural statistic data outputted from the control means 8. Moreover, the system is provided with a network management equipment 11 including a processing means 12 including an output function outputting the arithmetic result of the means 14 and a processing means 12 including a control function of the means 13, 14. Thus, the time zone in excess of a reference throughput is estimated for each weekday in terms of the theory of the probability and the standby line is activated before the throughput exceeds the reference throughput.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for controlling the number of activated lines, and more particularly to a method for controlling the number of active lines in which fluctuations in traffic volume are predicted in advance and countermeasures are made by activating protection lines. .

[Conventional technology]

The conventional method for controlling the number of activated lines activates the protection line when it detects that the throughput has exceeded a predetermined reference value, and deactivates the protection line when it detects that the throughput has become lower than the reference value. This is a method of converting

[Problem to be solved by the invention]

For example, when the conventional activated line number control method described above is used in a computer online network, it is possible to detect peak traffic that occurs in a short period of time, such as when terminals are turned on at the beginning of each day. Because the backup line is activated after
There is a problem in that the startup time of the terminal increases as well as the response delay.

An object of the present invention is to provide a method for controlling the number of activated lines by predicting changes in traffic volume in advance and activating protection lines to cope with the fluctuations, thereby avoiding a delay in terminal start-up time.

[Means to solve the problem]

The activated line number control method of the present invention includes a normal line group in which a group of lines between a plurality of packet exchangers is always available for use;
throughput measuring means for measuring the throughput per unit time for each line in the line group for each packet switch; control means including an output function for outputting the measured value of the throughput measuring means as statistical data and a reception function for receiving control information sent from the outside; a reference value storage means for storing a reference throughput that is a reference for determining the number of lines and a reference throughput that is a reference for determining whether to deactivate the backup line group; and a control unit that receives control from the control means. information storage means for storing throughput and calculation results for each day of the week and each time period, and the control means stores information such as throughput and calculation results for each day of the week and each time period; The configuration is such that the day of the week and time slot are detected in advance, and the required number of lines from the backup line group are activated in accordance with the detected day of the week and time slot.

The activated line number control method of the present invention includes a statistical data storage means connectable from the plurality of packet exchangers and receiving and recording statistical data outputted by the control means, and a plurality of statistical data storage means outputted from the same control means. a calculation means for calculating the average value, standard deviation, and probability density of the throughput for each day of the week and each time period, which are the control information; an output function for outputting the calculation results of the calculation means as the control information; and the statistics. A network management device may be provided having processing means including a data storage means and a control function for controlling the calculation means.

[Effect]

By using the above method, it is possible to probabilistically estimate the time period in which the throughput exceeds a predetermined standard throughput in daily operation work for each day of the week, and the throughput exceeds the predetermined standard probability. It becomes possible to activate the protection line before the throughput exceeds the standard throughput. Furthermore, as the number of operation days passes, the amount of data accumulated increases and approaches a normal distribution, so it can be said that the above analogy becomes more accurate as the number of operation days passes.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of one embodiment of the present invention.

A line group 1 between a plurality of packet exchangers is composed of a normal line group 2 that is always available and a protection line group 3 that can be made available as traffic increases. The packet switch 4 includes a data transmitting/receiving circuit 5.6 provided for each line in the line group 1, and a throughput circuit for measuring throughput per unit time for each line in the line group 1.
a control circuit 8 including an output function for outputting the measured value of the throughput measurement circuit as statistical data and a reception function for receiving control information transmitted from the outside; The standard throughput, which is the standard for determining the number of lines to be made private in line group 3, the standard throughput, which is the criterion for making a decision to deactivate protection line group 3, and the [action] section. and an information storage circuit 10 that stores the throughput and calculation results for each day of the week and each time period, which are the control information received by the control circuit 8. . A network management device 11 that transmits and receives statistical data and control information to and from the packet switch 4 includes a processing circuit 12 that interfaces with the control circuit 8 and a statistical data storage circuit that receives and records statistical data via the processing circuit 12. 13 and the control circuit 8 of the same packet switch 4
The calculation unit 14 calculates the average value, standard deviation, and probability density of the sloop count for each day of the week and each time period, which are control information, from a plurality of statistical data outputted by the controller. Note that the processing circuit 12 has an output function for outputting the calculation results of the calculation device as control information, and the statistical data storage circuit 1.
3 and a control function for controlling the arithmetic unit 14.

Next, the operation will be explained.

The throughput measuring circuit 7 always measures the throughput per unit time for the lines of the normal line group 2 and sends it to the control circuit 8. The control circuit 8 outputs the value measured by the throughput measurement circuit to the processing circuit 12 of the network management device 11 as statistical data. In the network management device 1'1, the statistical data storage circuit 13 receives and records statistical data via the processing circuit 12. This operation is performed regularly, and records are accumulated every day for each time period of each day of the week.

FIG. 2 is a flowchart for explaining the operation of the arithmetic device.

The arithmetic device 14 performs one calculation every day in step (hereinafter referred to as S) 1.
This statistical data is read out, and in S2, based on this statistical data, the average value, standard deviation, and probability density of the throughput for each time period are calculated, and the results are stored in the statistical data storage circuit 13.
At the same time, it is transmitted to the packet switch 4 via the processing circuit 12 in S3.

Next, the operation for activating the protection line group 3 within the packet switch 4 will be explained.

FIG. 3 is a flow chart of the operation for activating the protection line group.

A throughput measurement circuit 7 in the packet switch 4 measures the throughput per unit time for the lines of the normal line group 2 and the protection line group 3 in the Sll at predetermined intervals. The control circuit 8 transmits this measurement result to the network management device 11 in S12. At the same time, in order to confirm whether there is a need to activate the protection line group 3, the control circuit 8 determines in step 313 whether or not the protection line is currently in use. If this result shows that the number of channels is not used or the number of channels used is insufficient, the average value, standard deviation, and probability density of the throughput for each day of the week and each time period are read out from the information storage circuit 10 in S14, and in S15 Then, the probability of exceeding the line use reference value stored in the reference value memory table 9 and serving as the criterion for activating the protection line group 3 is calculated. If the calculated value is less than or equal to the standard probability stored in the standard value memory table 9, the process ends; if the calculated value is greater, the information storage circuit 1 is stored in S16.
From 0, the throughput for each corresponding day of the week and each time period is known, the backup line group 3 is activated, and the process ends. If it is determined in 313 that protection line group 3 is being used, S1
In step 7, it is determined whether or not the throughput in use is equal to or greater than the reference value stored in the reference value memory table 9. If it is greater than or equal to the reference value, the process ends as is; if it is less than the reference value, the process proceeds to step S18.
Then, the protection line group 3 currently in use is deactivated and the process ends.

Note that the activation of this backup line group is performed when the control circuit 8 determines that the throughput currently in use is low compared to the line usage base unit price stored in the reference value memory table 9. This can be done at any time without being restricted by the designation of the circuit 10.

〔Effect of the invention〕

As explained above, the present invention includes a throughput measuring means that measures the throughput per unit time for each line in a line group for each packet switch, and an output function that outputs the measured value of the throughput measuring means as statistical data. A control means including a receiving function for receiving control information sent from the outside, and a standard throughput and a protection line group that are the criteria for determining the number of lines to be activated as a protection line group in the line group. a reference value storage means for storing a reference throughput serving as a criterion for deactivation;
and an information storage means for storing the throughput for each day of the week and each time period, which is the control information received by the Hul1 means, and the control means stores the throughput for each time period on each day of the week from the information storage means on the day of the week when the throughput for each time period on each day of the week exceeds the reference throughput. By detecting the day of the week and time zone in advance and activating the required number of lines from the backup line group according to the detected day of the week and time zone, delays in terminal startup time can be prevented. There is.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a flowchart for explaining the operation of the arithmetic unit, and FIG. 3 is a flowchart of the operation for activating the protection line group. 1...Line group, 2...Normal line group, 3
......Protection line group, 4-...Packet switch, 5,6...Data transmitting/receiving circuit, 7...
...Through-at measurement circuit, 8...Control circuit,
9...-Reference value memory table, 10...-
- Information storage circuit, 11...Network management device, 12...Processing circuit, 13...Statistical data storage circuit, 14...Arithmetic device. Agent: Susumu Uchihara, patent attorney Figure 2

Claims (1)

[Scope of Claims] 1. A line group between a plurality of packet switching devices is composed of a normal line group that is always available and a protection line group that can be made available as traffic increases. ,
Throughput measuring means for measuring the throughput per unit time for each line in the line group for each of the packet exchanges; an output function for outputting the measured value of the throughput measuring means as statistical data; and control information sent from the outside. and a reference throughput serving as a reference for determining the number of lines to be activated in the protection line group among the line groups and deactivating the protection line group. a reference value storage means for storing a reference throughput serving as a criterion for making a judgment; and an information storage means for storing throughput and calculation results for each day of the week and each time period, which are control information received by the control means. The control means detects in advance from the information storage means a day of the week and a time period in which the throughput for each time period of each day of the week exceeds the reference throughput, and adjusts the protection line according to the detected day of the week and time period. A method for controlling the number of activated lines characterized by activating a required number of lines from a group. 2. A statistical data storage means that is connectable from the plurality of packet exchangers and receives and records the statistical data output by the control means, and a statistical data storage means for receiving and recording the statistical data output from the same control means, and calculating each day of the week and the control information from the plurality of statistical data output from the same control means. a calculation means for calculating the average value, standard deviation, and probability density of throughput for each time period; an output function for outputting the calculation results of the calculation means as the control information; and control of the statistical data storage means and the calculation means. 2. The method for controlling the number of activated lines according to claim 1, further comprising: a network management device having processing means including a control function for controlling the number of activated lines.