JPS58123266A - Convergence information transfer system - Google Patents

Abstract

PURPOSE:To prevent an error in regulation due to the overlooking of convergence information and a deadlock due to an overload, by providing an interface device with a means for controlling the recognition from a load control indication from a regulation controller and transmission intervals of the convergence information. CONSTITUTION:For every exchange 1, the overload control level of the regulation controller 4 is set and the convergence detector 2 of each exchange 1 detects a convergence state at a prescribed period to send the convergence information (c) to an interface controller 6. Further, the information is sent from the device 6 to the device 4 to detect whether the information exceeds the internally set regulation level or not. When it exceeds and is lower than the regulation level, those states are reported to respective devices 6. Then, the device 6 controls a controller 3 corresponding to the exchange 1 to vary the transmission period of the convergence information to prevent system deadlocks 7 due to the overlooking of the information and an overload.

Description

[Detailed Description of the Invention] The present invention is based on the F-Rahi, which controls Denron Tai O-Fukusou
Related to control D, 41K “Congestion information transfer method during overload of traffic control system i.

Follow 1. Nowadays, the system that performs the traffic control K>Keru Fugu 7 information transfer method has a configuration as shown in the 1st IIO block diagram O, so in the exchange 1, the congestion detection device 2
(2) Detection of the condition is carried out at a cycle of 2 minutes.
Detectable congestion information '111 (""le:L...
, n), that is, switching equipment, common equipment, and congestion O1 of 41 disease subscribers! Information indicating the degree is sent to the regulation control device 4. A regulation control device 4 is provided for a plurality of exchanges, and receives the information C1, analyzes it, and sends regulation information to each exchange simultaneously as required.
, send l. The regulation information r11 to 'ai is sent from the regulation control device 4 to each exchange via each regulation device 3. The restriction information includes telephone numbers whose calls are restricted, restriction rate, etc.

In the conventional congestion information transfer described above, when multiple W110 congestions occur simultaneously, that is, a large number of congestion information c! 11 concentrates on the regulation control device 4 within a short period of time, the regulation control device 4 becomes overcharged, which may lead to failure of regulation due to oversight of the congestion information Q or system failure of the regulation control device 4. For this reason, the exchange W accommodated in the regulation control device 4 is designed to deal with the simultaneous occurrence of F<-15, which rarely occurs.
Methods such as reducing the kfi and increasing the scale of the parent control device have been adopted, and from the standpoint of system efficiency, this is the only point.

The purpose of the present invention is to solve the above-mentioned conventional method of opening point K,
Based on the idea of lengthening the transmission cycle of congestion information when a large number of congestions occur at the same time, it is possible to control an appropriate number of switching equipment groups, and there is no failure to regulate congestion information.
It is possible to obtain an economical congested information transfer method that does not cause system deadlock due to overload.

In the present invention, in a congestion information transfer method in traffic control that controls IJIIi congestion,
There is provided a congestion information transfer method characterized in that an interface control device is provided in a group of exchanges and has means for recognizing a load control instruction from a regulation control device and means for controlling a transmission interval of congestion information O.

FIG. 2 shows a system that performs a nine-way information transfer method as an embodiment of the present invention. In $2@I, the same components as in FIG. 1 are given the same reference numerals. In the exchange I, the congestion detection device 2 performs congestion IIO detection every two minutes, and the detected congestion information C is sent to the interface control device 6. Congestion information C is always sent at regular intervals. Fukusouina 1ll IC
is further connected from the interface control device 6 to the regulation control device 4.
When the usage efficiency of the control device inside the regulation control device 40 or the number of congestion information received per unit time exceeds a specific threshold value, the regulation control device 4 sends the information to the interface control device 6. A notification Ls is sent to the user, and a notification Ll is sent when the value falls below the threshold. The interface control device 6 is installed in the maintenance management unit of the exchange, and in response to the above-mentioned notification Ls, changes the synchronization of congestion information sent from the interface control device 6 to the regulation control device 4 from 2 minutes to 4 minutes. . When the notification Lm is sent from the regulation control device 4 to the interface control device 6, the period of congestion information is returned from 4 minutes to 2 minutes.

The interface control device 6 performs control to send the congestion information to the regulation control device 4 at a cycle longer than the basic cycle in the event of an overload. Information can be monitored.

The interface control device 6 can have a configuration as shown in FIG. 3, for example. In FIG. 3, a receiving line 11 is a multi-frequency dial signal receiving circuit which receives information from a congestion detection device 2, and sends the subscriber number and shirahira information in a congested state to a buffer 12 for storage. , the output gate 13 is opened and closed by a control device (CTL) 150 command, giving a control period of 2 or 4 minutes. The transmitting circuit 14 sends the contents of the buffer 120 to the regulation control device 4 in accordance with the opening and closing of the output gate 13. Information from the regulation control device 4, that is, regulation information, LI and Lm, is received by the receiving circuit 19, sent to the buffer 18, and stored.

Information other than Ls and L1 is simply relayed and sent from the buffer 18. 17 and is sent to the regulating device 3. Ls and Lm are sent to the control device (CTL) 15.

A control device (CTL) 15 includes a memory 16 and performs control according to the order shown in FIG. The stored content of the buffer 12 is not in the load control state, that is, if Lm is not received, it is broadcast live, and when it is in the load control state 11, that is, when Ls is being received, it is output game).
4D - turned on and off according to the closed state, and therefore alternately turned on and off according to the basic period, and transmitted with a 2-minute period as a 4-minute period. If there is a load control instruction, that is, an Ls instruction in the buffer 180 storage information, the buffer 120 output gate 13 is closed, and then the load control state is stored. If there is no load control instruction, there is a load control release instruction, that is, if there is an Lm instruction, the output gate 13 of the buffer 12 is opened and the load control state is cleared. Otherwise, no operation will be performed.

FIG. 5 shows the relationship between the load measurement of the regulation control device, the load control period G, and the timing of the congestion information transmitted to the regulation control device in the above-described embodiment. ζHere, L- indicates the load control level, M indicates the load control release level, and the symbol a and the arrow to the right of it indicate the timing of the congestion information transmitted from the switchboard to the regulation control device. The arrow shown is the congestion information O timing transmitted from the exchange to the regulation control device. What J? The axis is time.

In this embodiment, focusing on the fact that the load amount of the regulation control device is proportional to IIK of the congestion information that arrives within a certain period of time, the load state of the regulation control device is notified to the interface control device, and the interface control device controls the regulation quality. The transmission cycle of congestion information is changed within a range that does not significantly reduce the amount of congestion information, and the number of congestion information that the regulation control device receives within a certain period of time is controlled, thereby smoothing out the load on the regulation control device when overloaded. .

Il similar to Figure 1115 for other embodiments of the invention.
! A clear diagram is shown in FIG. In this embodiment, overload control levels 1 and 2 (Aal and 1m2) are set, and the load amount is 51 or more L! - The regulation stage between Maso is Gl, and the regulation stage between js2 and La1t is G2, and congestion information is transmitted at a cycle twice the basic cycle in the G1 state and 03 times the basic cycle in the G2 state. to do,
Other aspects are the same as the embodiment shown in FIG. According to this, it becomes possible to deal with the simultaneous occurrence of a larger number of congestions.

According to the present invention, it is possible to obtain an economical congestion information transfer system that can control a suitable number of switching equipment groups, prevents failure of regulations due to oversight of congestion information, and eliminates system deadlock due to overload.

[Brief explanation of drawings]

Figure 1 is a block diagram of a system that performs the conventional congestion information transfer method, jI! Figure 2 is a block diagram of a system that performs a congestion information transfer method as an example of the BA of this invention.
Fig. 3 is a block circuit diagram of the interface control device in Fig. 2, Fig. 4 is a diagram explaining the control contents and order of the stone control device in Fig. 3, and Fig. 5 shows the operation of the system in Fig. 2. FIG. 6 is a diagram for explaining the same operation gate as FIG. 5 in another embodiment of Kaoru's invention. DESCRIPTION OF SYMBOLS 1... Switching machine, 2... Congestion detection device, 3... Regulation device, 4... Regulation control device,
6... Interface control device, 11... Receiving circuit, 12-... Buffer, 13...
14--Transmission circuit, 15--Control device, 16--Memory, 17--Transmission path, 18--
Buffer 19...reception circuit. Patent applicant Fujitsu Ltd. Kinsha 8-tei Telegraph and Telephone Public Corporation Oki Electric Industry Co., Ltd. Kinsha Nippon Electric Co., Ltd. Hitachi Ltd. Patent application agent Akira Aoki Patent attorney Kazuyuki Nishitate Patent attorney Yukio Uchida Patent attorney Akira Yamaguchi Figure 1 Figure 2 Figure 3 L--+ -f ll:': Figure 5 Figure 6 Continued from page 1 Applicant NEC Corporation 5-33-1 Shiba, Minato-ku, Tokyo @Applicant Hitachi, Ltd. 5-1 Marunouchi-chome, Chiyoda-ku, Tokyo

Claims (1)

[Claims] In the congestion information transfer system for traffic control that controls incoming traffic, there is a means for issuing load control instructions from the control unit for each group of exchanges, and a means for controlling the congestion information transmission ■. It is recommended to provide an interface-leg device with means to facilitate and facilitate information transfer.