JPH07271742A - Control information reproducing method - Google Patents

Abstract

PURPOSE:To provide the control information reproducing method which shortens the processing time required to reproduce destroyed control information and transfers the control information at high speed. CONSTITUTION:The same data format is employed for control information in the internal storage device of a main processor 11 and control information in the internal storage device 18 of a slave processor unit 12; when the destroyed control information is reproduced, control information required for the reproduction is all transferred at a time from the storage device 16 or 18 of the processor unit 11 or 12 on the side where the control information is provided to the storage device 18 or 16 of the processor unit 12 or 11 on the side where the control information is reproduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control information reproducing method for reproducing control information destroyed in a switching network and a switching node, and more particularly to a control information reproducing method capable of shortening the time required for reproduction.

[0002]

2. Description of the Related Art In a conventional switching network and switching node, when control information necessary for establishing a communication connection is destroyed, in order to reproduce the control information, information about the communication connection is held. A message that the device reads the information necessary for resetting the communication connection from the storage device for each communication connection to be restored or collectively for multiple communication connections and has the information as an information element and requests the setting of the communication connection. Is sent to the device that reproduces the communication connection information, and the device that received the request sets the information necessary for resetting the communication connection in the message in the storage device.

[0003]

In the above-mentioned conventional control information reproducing method, in the device providing the control information, that is, in the device holding the control information, the communication connection held in the storage device is used. Interprets the meaning of the control information, converts the information to an appropriate format from the viewpoint of data size, type, etc., and edits it as an appropriate message, and the control information is provided to the device on the side of the control, that is, the control information. In the device that needs to be transferred to the device to be recovered and the control information is provided, after receiving the message, the meaning is interpreted and the information is stored in the storage device in the device in an appropriate format. It is necessary to take the procedure of storing, and there is a problem that the processing time required for this procedure increases.

The present invention has been made in view of the above,
It is an object of the present invention to provide a control information reproducing method capable of reducing the processing time required to reproduce the destroyed control information and transferring the control information at high speed.

[0005]

In order to solve the above problems, a control information reproducing method of the present invention has a main processor unit for controlling the inside of an exchange node and a plurality of slave processor units subordinate to the processor unit. A function of an exchange node, in which the main processor unit creates control information necessary to establish a communication connection passing through the exchange node, holds the information, and at the same time notifies the slave processor unit of the information. In the subordinate processor unit, which holds the control information received from the main processor unit and performs a process for exchanging based on the information, the main processor unit or the subordinate processor unit is for some reason caused. When the control information held by one of the A control information reproducing method for reproducing destroyed control information using control information held by an undestructed processor unit, the data format of the control information in a storage device of a main processor unit, and a slave processor unit. The same data format of the control information in the storage device is used, and when the destroyed control information is reproduced, the control information necessary for reproduction is reproduced from the storage device of the processor unit which provides the control information. The gist is to collectively transfer the data to the storage device of the processor unit on the executing side.

Further, the control information reproducing method of the present invention is a switching network having a plurality of switching nodes having a processor unit for controlling the inside of the switching node and a control node controlling the switching nodes, wherein the control node comprises: It has a function of creating control information necessary for establishing a communication connection passing through the switching network, holding the information, and at the same time notifying the switching node of the information. In a switching network that holds received control information and performs a process for exchange based on the information, when the control information held by either the control node or the switching node is destroyed for some reason, it is destroyed. Regenerate the destroyed control information using the control information held by the node that is not A control information reproducing method, wherein the data format of the control information in the storage device of the control node and the data format of the control information in the storage device of the exchange node are the same, and reproduction is performed when the destroyed control information is reproduced. The gist is to collectively transfer necessary control information from the storage device of the node that provides the control information to the storage device of the node that reproduces the control information.

[0007]

In the control information reproducing method of the present invention, the data format of the control information in the storage device of the main processor unit and the data format of the control information in the storage device of the slave processor unit are made the same, and the destroyed control information is reproduced. At times, the control information necessary for reproduction is collectively transferred from the storage device of the processor unit that provides the control information to the storage device of the processor unit that reproduces the control information.

Further, in the control information reproducing method of the present invention, the data format of the control information in the storage device of the control node is the same as the data format of the control information in the storage device of the exchange node, and the destroyed control information is reproduced. At times, the control information necessary for reproduction is collectively transferred from the storage device of the node that provides the control information to the storage device of the node that reproduces the control information.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the overall configuration of a system for carrying out a control information reproducing method according to an embodiment of the present invention. In the figure, 1 is an exchange node to which the control information reproducing method of the present invention is applied. As a constituent of this exchange node 1, 11 is a main processor unit for controlling the inside of the exchange node 1, and 12 is a main processor unit. 11 is a slave processor unit, 13 is a switch for performing a switching operation, 14 is a communication line for accommodating a terminal accommodated in a switching node, or is connected to another switching node, and 15 is for connecting processor units and A processor bus for transfer, 16 is a storage device in the main processor unit for storing control information necessary for establishing a communication connection passing through the switching node 1, and 17 is necessary for establishing a communication connection passing through the switching node. CPU 18 in the main processor unit for performing various processes A slave processor unit internal storage device that holds information and implements an actual exchange operation based on the information. A slave processor unit 19 exchanges information with the main processor 11 and manages the slave processor unit internal storage device 18. The internal CPU.

2A and 2B are respectively shown in FIG.
Data holding control information necessary for establishing a communication connection passing through the switching node 1 in the main processor unit internal storage device 16 and the slave processor unit internal storage device 18 used in the embodiment shown in FIG. Is an example of a part of the format.

At the address A of the main processor unit internal storage device 16 shown in FIG. 2A, the connection numbers relating to the first communication connection are addresses A + 1 and A.
Bands, quality classes, and other connection information of the communication connection are held in +2 and A + 3, respectively. The same applies to the second communication connection.

Further, in the slave processor unit internal storage device 18 shown in FIG. 2B, control information relating to the same communication connection is stored in an area starting from address B in the slave processor unit internal storage device 18 in the main processor unit internal storage device. It is stored in the same format as in 16. That is, in FIG. 2B, the address B of the slave processor unit internal storage device 18 has the connection numbers relating to the first communication connection as addresses B + 1, B + 2,
B + 3 holds the bandwidth, quality class, and other connection information of the communication connection. The same applies to the second communication connection.

In the present embodiment, the connection number, bandwidth, quality class, and other connection attributes have been described as examples of control information relating to one communication connection, but these elements are merely examples. Irrespective of the essence of the present invention, other elements may be included as the control information in the main processor unit internal storage device 16 and the slave processor unit internal storage device 18, and FIG.
It does not matter if you do not include the elements shown in.

Next, the operation of this embodiment will be described with reference to the flow chart shown in FIG. The flowchart shown in FIG. 3 shows a case where the control information held by the storage device 16 in the main processor unit necessary for establishing the communication connection passing through the switching node 1 in the embodiment shown in FIG. 1 is destroyed for some reason. The operation of the main processor unit 11 and the slave processor unit 12 in FIG. In the figure, the slave processor unit 12 is described as being unique, but there may be a plurality of slave processor units 12 as required.

In the processing of FIG. 3, first, when the main processor unit 11 receives a request for establishing a new communication connection (step 110), the main processor unit 11 performs the processing necessary for establishing the communication connection. Then, the information about the communication connection is stored in the storage device 16 in the main processor unit (step 120). Further, the main processor unit 11
Notifies the relevant slave processor unit 12 of the information necessary for establishing the communication connection (step 130), and the slave processor unit 12 provides the information necessary for establishing the communication connection in the slave processor unit. The data is stored in the storage device 18 in the same format as the data format written in the storage device 16 in the main processor unit (step 140).

If the control information necessary for establishing the communication connection passing through the exchange node 1 held in the main processor unit internal storage device 16 is destroyed for some reason (step 150), the main processor unit 11 Destruction of the control information is detected (step 16)
0). Then, the slave processor unit 12 is requested to transfer the control information for reproducing the destroyed control information (step 170). Upon receiving the request, the slave processor unit 12 receives the control information stored in the slave processor unit internal storage device 18, and if necessary, part or all of the control information without knowing the content of the control information. The data is collectively transferred to the internal storage device 16 (step 180). As a result, the main processor unit 11
Reproduces the control information required to establish a communication connection (step 190).

FIG. 4 is a flow chart showing the operation of another embodiment of the present invention. The configuration of the system used in this embodiment is the same as that shown in FIG. 1 and is applied to the switching node 1. The data format of the control information stored in the main processor unit internal storage device 16 and the sub processor unit internal storage device 18 of each of the main processor unit 11 and the slave processor unit 12 used in the exchange node 1 is also illustrated. It is the same as that shown in 2.

In the process of the embodiment shown in FIG. 4, the slave processor unit internal storage device 18 holds the control information stored in the main processor unit internal storage device 16 in the process shown in FIG. FIG. 3 shows the operation of the main processor unit 11 and the slave processor unit 12 when the control information necessary for establishing the communication connection passing through the exchange node is destroyed for some reason. The same step is denoted by the same step code. In the figure, the slave processor unit 12 is described as being unique, but there may be a plurality of slave processor units 12 as required.

In the processing of FIG. 4, steps 110-1
The processing of 40 is the same as steps 110 to 140 of the processing of FIG. Then, in the next step 250, if the control information held by the slave processor unit internal storage device 18 and necessary for establishing the communication connection passing through the exchange node 1 is destroyed for some reason,
The slave processor unit 12 detects the destruction of the control information (step 260). Then, the main processor unit 11 is requested to transfer the control information for reproducing the destroyed control information (step 270). Upon receiving the request, the main processor unit 11 receives the control information stored in the main processor unit internal storage device 16, and if necessary, part or all of the control information without knowing the content of the control information. The data is collectively transferred to the internal storage device 18 (step 280). As a result, the slave processor unit 12 reproduces the control information necessary for establishing the communication connection (step 290).

FIG. 5 is a block diagram showing the entire switching network for implementing the control information reproducing method according to another embodiment of the present invention. In the figure, 1 is a switching node, 14 is a communication line for accommodating a terminal accommodated by the switching node and connecting with another switching node, and 21 is a control requesting the switching node 1 to establish and release a communication connection. Node, 23
Is a storage device in the control node that stores control information necessary for establishing a communication connection held by the switching network, and 24 stores control information that is necessary for establishing a communication connection passing through the switching node 1. Storage device in switching node, 26 is control node 21 and switching node 1
It is a control communication path that connects the two and transfers information. Although only one control node 21 is shown in this figure, this number is not related to the essence of the present invention, and a plurality of control nodes may exist.

FIGS. 6A and 6B are respectively shown in FIG.
The switching node 1 in the control node internal storage device 23 and the exchange node internal storage device 24 used in the embodiment shown in FIG.
3 is an example of a part of the format of data holding control information necessary for establishing a communication connection passing through the.

In FIG. 2A, at address A of the control node internal storage device 23, the connection numbers related to the first communication connection are the addresses A + 1, A + 2,
A + 3 holds the bandwidth, quality class, and other connection information of the communication connection. The same applies to the second communication connection.

In the exchange node storage device 24 shown in FIG. 6B, the control information regarding the same communication connection is the same as in the control node storage device 23 in the area starting from B in the exchange node storage device 24. It is retained in the form of. In this description, the control information related to one communication connection is taken as an example and explained as the connection number, the band, the quality class, and other connection attributes, but these elements are merely examples, and the present invention is not limited to this. The control information in the control node internal storage device 23 and the exchange node internal storage device 24 has no relation to the essence and may include other elements or may not include the elements shown in FIG.

Next, the operation of this embodiment will be described with reference to the flow chart shown in FIG. The flow chart shown in FIG. 7 shows a case where the control information necessary for establishing the communication connection held by the exchange network held by the control node internal storage device 23 in the embodiment shown in FIG. 5 is destroyed for some reason. 2 shows the operations of the control node 21 and the switching node 1. In addition, in the figure,
Although the switching node 1 is described as being unique, there may be a plurality of switching nodes 1 as required.

In the process of FIG. 7, first, the control node 2
When 1 receives a request for establishing a new communication connection (step 310), the control node 21 performs the processing necessary for establishing the communication connection,
Information about the communication connection is stored in the control node storage device 23 (step 320). Further, the control node 21 notifies the relevant switching node 1 of the information necessary for establishing the communication connection (step 33).
0), the exchange node 1 stores the information necessary for establishing the communication connection in the exchange node storage device 24.
Then, the data is stored in the same format as the data format written in the control node internal storage device 23 (step 340).

If the control information held by the storage device in the control node 23 and necessary for establishing the communication connection held by the exchange network is destroyed for some reason (step 350), the control node 21 causes the control node 21 to perform the control. Destruction of information is detected (step 360). Then, the switching node 1 is requested to transfer the control information for reproducing the destroyed control information (step 370). Upon receiving the request, the exchange node 1 stores the control information held in the exchange node internal storage device 24, if necessary, part or all of the control information without knowing the content of the control information. 23 to 23 (step 38)
0). As a result, the control node 21 reproduces the necessary control information (step 390).

FIG. 8 is a flow chart showing the operation of another embodiment of the present invention. The configuration of the system used in this example is the same as that shown in FIG. 5 and is applied to the switching network. Further, the data format of the control information stored in the control node internal storage device 23 and the exchange node internal storage device 24 of each of the control node 21 and the exchange node 1 used in this exchange network is as shown in FIG. Is the same.

In the process of the embodiment shown in FIG. 8, the control node internal storage device 24 holds the control information stored in the control node internal storage device 23 in the process shown in FIG. Control node 21 and switching node 1 when the control information necessary for establishing a communication connection passing through the switching node is destroyed for some reason
7 and the same steps as those in FIG. 7 are designated by the same step numbers. It should be noted that in the figure, the switching node 1 is described as being unique, but there may be a plurality of switching nodes 1 if necessary.

In the process of FIG. 8, steps 310 to 3
The process of 40 is the same as steps 110 to 140 of the process of FIG. 7. Then, in the next step 450, it is assumed that the control information, which is stored in the intra-switching node storage device 24 and is necessary for establishing the communication connection passing through the switching node, is destroyed for some reason.
Detects the destruction of the control information (step 460). Then, the control node 21 is requested to transfer the control information for reproducing the destroyed control information (step 47).
0). Upon receiving the request, the control node 21 stores the control information held in the control node internal storage device 23, if necessary, part or all of the control information without knowing the content of the control information, and stores it in the exchange node internal storage device. The data is collectively transferred to 24 (step 480). As a result, the exchange node 1 reproduces the control information necessary for establishing the communication connection (step 490).

[0030]

As described above, according to the present invention,
The data format of the control information held by the device providing the control information in the storage device in the device and the data format of the information held by the device providing the control information in the storage device in the device are stored. Use the same data format as the contents written in the device, and play back the destroyed control information.
Control information necessary for reproduction, from the storage device of the device that provides the control information to the storage device of the device that provides the control information without interpreting the meaning of the control information, that is,
Transfers all at once, regardless of the contents of control information.
Since it does not require interpretation, conversion, editing, etc. of control information as in the past, processing time can be shortened, control information can be transferred and reproduced at high speed, and an exchange service due to destruction of control information cannot be provided. The condition can be recovered early.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an entire system for implementing a control information reproducing method according to an embodiment of the present invention.

FIG. 2 is a diagram showing an example of a part of the format of data holding control information necessary for establishing a communication connection used in the embodiment shown in FIG.

FIG. 3 is a flowchart showing the operation of the embodiment shown in FIG.

FIG. 4 is a flowchart showing the operation of another embodiment of the present invention.

FIG. 5 is a block diagram showing an entire switching network for implementing a control information reproducing method according to another embodiment of the present invention.

FIG. 6 is a diagram showing an example of a partial format of data holding control information necessary for establishing a communication connection used in the embodiment shown in FIG. 5;

7 is a flowchart showing the operation of the embodiment shown in FIG.

FIG. 8 is a flow chart showing the operation of still another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 exchange node 11 main processor unit 12 slave processor unit 16 main processor unit internal storage device 18 slave processor unit internal storage device 21 control node 23 control node internal storage device 24 exchange node internal storage device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Isao Saito 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation

Claims (2)

[Claims] 1. A switching node having a main processor unit for controlling the inside of the switching node and a plurality of slave processor units subordinate to the processor unit, wherein the main processor unit establishes a communication connection passing through the switching node. Has the function of creating the control information necessary for the purpose of holding the information and at the same time notifying the slave processor unit of the information. In the slave processor unit, the control information received from the main processor unit is held. , In an exchange node that performs processing for exchange based on the information, when the control information held by one of the main processor unit or the slave processor unit is destroyed due to some cause,
A control information reproducing method for reproducing destroyed control information using control information held by an undestructed processor unit, the data format of the control information in a storage device of a main processor unit, and a slave processor unit. The same data format is used for the control information in the storage device, and when the destroyed control information is reproduced, the control information necessary for reproduction is reproduced from the storage device of the processor unit providing the control information. A control information reproducing method characterized in that the control information is collectively transferred to a storage device of a processor unit on the executing side. 2. A switching network having a plurality of switching nodes having a processor unit for controlling the inside of the switching node and a control node controlling the switching node,
The control node has a function of creating control information necessary for establishing a communication connection passing through the switching network, holding the information, and at the same time notifying the switching node of the information. In the switching network that holds the control information received from the control node and performs the process for the exchange based on the information, the control information held by either the control node or the switching node is destroyed for some reason. At this time, there is provided a control information reproducing method for reproducing the destroyed control information by using the control information held by the node which is not destroyed, wherein the data format of the control information in the storage device of the control node and the exchange node. The same data format of the control information in the storage device of, and when reproducing the destroyed control information, Raw the control information necessary, from the storage device side of the node that provides control information,
A control information reproducing method, characterized in that the control information is collectively transferred to a storage device of a node on the reproducing side.