JPH10301870A - Communication line control system - Google Patents

Abstract

(57) [Problem] To provide a communication line control system capable of performing communication using the entire communication line and backing up a communication failure by another communication line. SOLUTION: Communication lines L1 to L4 and communication units T1 to T1 are provided.
In the communication line control system 1 including T4, the load distribution control means 3, and the communication terminals TM1 to TM5 connected to the load distribution control means 3, the communication means T1 to T4 have a fixed communication ID among the communication IDs. And has at least one communication channel 10 to 30 for holding data of a fixed number of communication requests in a queue, and the load distribution control means 3 receives the communication request, The communication channels 10 to 30 passing the same communication ID as the communication ID are searched in a predetermined priority order, and the data of the communication request is transmitted to the communication channel in the available state having the highest priority. Configured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication system in which a large number of communications are transmitted by a fixed number of communication lines and communication means. The present invention relates to a communication line control system that has been developed.

[0002] The "communication system for transmitting a large number of communications by a certain number of communication lines and communication means" to which the present invention can be applied includes a communication system having a plurality of parallel communication lines, a client server system, There are a communication system including a plurality of communication devices such as facsimile machines, a system for transmitting and receiving data in a batch manner to and from a medium for high-speed transmission and reception such as an optical cable.

[0003]

2. Description of the Related Art In a communication system in which a large number of communications are sent to a certain number of communication lines and communication means, communication requests are concentrated on a specific communication line or communication means, and are temporarily sent to the communication line or communication means. It often happens that the communication data is not easily transmitted to the communication partner.

The following are specific examples of the communication system in which such a phenomenon occurs. In a communication system having a plurality of parallel communication lines (telephone lines, computer communication lines, and the like), a case where communication is concentrated on a specific communication line corresponds to this. In this case, the line to be used cannot be used, and communication cannot be performed. In a client server system where multiple distributed servers are connected to one center server and many clients are connected to these distributed servers, many clients may send a request for communication to the center server to a specific distributed server. This is the case. In this case, the distributed server on which communication requests are concentrated is in a fully operating state, but the other distributed servers are in an idling state. From the viewpoint of the client, the communication request is not easily processed and communication cannot be performed. In a communication system having a plurality of facsimile machines, transmission data is concentrated on a specific facsimile machine, and data cannot be easily transmitted, even though other facsimile machines can transmit. As a method of avoiding the failure due to the concentration of communication as described in the above examples, it has been considered to assign a specific type of communication to each communication line or communication means.

[0005] As an example of this conventional method, the above-mentioned "conventional method of assigning a specific communication line or communication means to a specific communication" will be described using an example of a communication system for stock orders in a securities company.

FIG. 8 shows a configuration of a stock order communication system in which a specific communication line or communication means is in charge of a specific communication.

In this stock order communication system, a plurality of lines L1 to L4 are connected to the exchange 50. Communication means T1 to T4 are provided for each of the lines L1 to L4. The communication means T1 to T4 are devices that control a communication protocol with the exchange 50 via the lines L1 to L4 and transmit and receive data.

Each communication means T1 to T4 has a dedicated order terminal T
M1 to TM5 are connected. Dedicated order terminals TM1
TM5 is, as shown in FIG. 8, a terminal for making a basket order, a terminal for making a single order, a terminal for making a consignment order,
An order terminal for making a specific type of order as shown in FIG. The basket order refers to a stock ordering method for ordering a combination of a plurality of stocks, and the single order refers to a stock ordering method for ordering a single stock. The consignment order refers to a stock ordering method in which a securities company orders a stock on behalf of a customer.

According to the stock order communication system,
By using the dedicated order terminals TM1 to TM5 properly according to the type of stock order, a stock order can be made to the exchange 50.

[0010]

However, in the above-mentioned "conventional method of assigning a specific communication line or communication means to a specific type of communication", when a load is concentrated on a certain communication line, another load is applied. Since a low communication line could not be used, the overall communication efficiency was low.

Further, in the above-described conventional method, when a communication line becomes incapable of communication, the type of communication in charge cannot be transmitted or received. In this case, the reliability of reliably sending data to a communication partner was low.

In addition, as in a communication system using a medium for performing high-speed transmission / reception such as an optical cable, a communication system in which a time for establishing a protocol for transmission / reception is longer than a time for actually transmitting / receiving data. Then, the communication efficiency is higher if a plurality of communication data are transmitted and received collectively for each type.

Conventionally, however, communication requests sent are grouped according to the type of communication and stored in a single high-speed line, and are transmitted and received when a certain number of communication requests are collected for each communication type. There was no system.

[0014] Therefore, the problem to be solved by the present invention is to avoid communication inefficiency due to mutual interference of communication requests, to enable communication using the entire communication line, and to back up communication failure by another communication line. It is an object of the present invention to provide a communication line control system capable of performing such operations.

[0015]

A communication line control system according to a first aspect of the present invention includes at least one communication line, communication means respectively connected to the communication lines, and a plurality of communication means. A communication line control system having a load distribution control means and a plurality of communication terminals connected to one load distribution control means, wherein the communication means comprises: A communication channel through which a predetermined number of communication request data are queued and held, and wherein the load distribution control means performs communication with a communication ID from the communication terminal. Receives the request and has the same communication ID as the communication ID of the communication request
A communication channel through which the communication request is transmitted is searched in a predetermined priority order, and the communication request data is transmitted to a communication channel having the highest priority among available communication channels.

The communication line control system according to claim 2 of the present invention is the communication line control system according to claim 1, wherein the load distribution control means receives a communication request with a communication ID from the communication terminal, A communication channel passing through the same communication ID as the communication ID is searched in a predetermined priority order, and the communication request data is transmitted to the communication channel having the highest priority among the available communication channels, and The information of the original communication terminal is retained, and response communication data is transmitted to the requesting communication terminal.

According to a third aspect of the present invention, in the communication line control system according to the second aspect, the load distribution control means uses the communication ID and a communication ID to specify the communication means. A communication unit management unit that manages, a communication request management unit that manages the generation, processing, and reply of a communication request of the communication terminal; and a request source communication terminal management unit that manages a request source communication terminal for each communication request. And a main control unit for inputting a communication request or a response communication request and distributing the processing of the request to each of the management units.

The communication line control system according to a fourth aspect of the present invention is the communication line control system according to the third aspect, wherein the communication unit management unit includes a communication terminal that issues a communication request and a communication unit that communicates the communication request. For each communication path for holding communication between the communication means, a communication means information management means for managing information on the communication path and the communication means, and a communication means management table for registering the communication means and their communication IDs, And a communication means management table management means for managing the communication means information management means.

The communication line control system according to a fifth aspect of the present invention is the communication line control system according to the third aspect, wherein the communication request management unit manages information of communication means for performing communication for each communication ID, and Communication request queue management means for holding the above data, a communication request queue manager means for managing the communication request queue management means for each communication ID, and a response to a communication request for each communication ID. Reply watcher means for managing transmission of response data in the case.

In a communication line control system according to a sixth aspect of the present invention, in the communication line control system according to the third aspect, when a failure occurs in communication, the communication means specifies a communication ID of the communication means and a communication means. To the load distribution control means, and the load distribution control means sends the communication means having the same communication ID as the communication ID sent from the communication means from the communication means management part and the communication request management part. The communication failure is backed up by retrieving the information on the communication means that has become unable to communicate.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described below with reference to the accompanying drawings. First, an example of a system configuration of a communication line control system according to the present invention will be described with reference to FIG.

In FIG. 1, a communication line control system generally designated by reference numeral 1 comprises a plurality of communication lines L1 to L4 connected to a communication partner 2 and communication units T1 to T1 connected to the communication lines L1 to L4, respectively. T4, load distribution control means 3 connected to communication means T1 to T4, and load distribution control means 3
And communication terminals TM1 to TM5 connected to each other.

The communication means T1 to T4 have communication channels 10 to 30, 50 corresponding to the communication ID. Here, the communication ID is "communication ID 1" as shown in FIG.
The communication identifiers are classified according to the type of communication, such as “0”, “communication ID 20”,... And are attached to the communication.

The type of communication for classifying the communication ID is
Depending on how the user uses the communication line control system,
It can be freely defined by the user. For example, a communication ID may be assigned according to the content of communication data, and a different communication line may be preferentially used for each communication type.
Alternatively, the communication may be ranked according to the priority of the communication, a communication ID may be assigned, and the communication with the communication ID with a higher priority may be preferentially passed.

The communication partner 2 may be a single communication partner or a plurality of communication partners. People, computers,
It may be a communication device.

The communication lines L1 to L4 are communication paths through which communication is performed regardless of wired, wireless, or carrier current.

The communication means T1 to T4 include communication lines L1 to L
Means for inputting / outputting communication data to / from the communication channel 4, declaring communication IDs of communication channels 10 to 30 described later,
It has an information processing function that can perform processing such as release, and can hold a fixed number of communication request data in communication channels 10 to 30 in a queue. Preferably, the communication means T1 to T4 comprise a computer.

The communication means T1 to T4 can collectively transmit and receive a predetermined number of the same type of communication. That is, the communication means T1 to T4 store the received communication requests by grouping them according to the communication type, and determine that communication is possible on condition that a certain number of communication requests are collected for each communication type, It can be sent.

The load distribution control means 3 comprises communication terminals TM1 to TM1.
A communication request is received from the TM5, and the communication channels 10 to 30 and 50 that pass the same communication ID as the communication ID assigned to the communication request are searched in a predetermined priority order, and the communication channels 10 to 30 in a usable state are searched. , 50 for transmitting the data of the communication request to the one having the highest priority. The load distribution control means 3
It is an information processing apparatus for performing the above processing, and may be an information processing apparatus fixedly configured to perform the above processing, but is preferably a computer controlled by software.

The communication line control system 1 may also transmit response communication data, or may unilaterally transmit only data.

If the communication line control system 1 also transmits response data, the load distribution control means 3
The information of the requesting communication terminals TM1 to TM5 is held, and response communication data is transmitted to the requesting communication terminal.

Each of the communication terminals TM1 to TM5 is a device for inputting and outputting a communication request, and is a telephone, a dedicated terminal, a computer, or the like. When sending a communication request, the communication terminals TM1 to TM5 attach the communication ID and send it.

Communication by the communication line control system 1 having the above configuration is performed as follows. Communication terminals TM1 to T
M5 attaches a communication ID to the communication request and sends it to the load distribution control means 3 individually. The load distribution control means 3 receives the communication requests from the communication terminals TM1 to TM5, reads the communication ID attached to the communication requests, and
The communication means T1 to T4 having the communication channels 10 to 30 and 50 for transmitting and receiving D are searched according to a predetermined priority order. Here, "search" refers to checking whether or not the number of communication requests already stored in the communication channel of the communication means has reached a certain number, and if the number has reached the certain number, the communication means having the next priority Checking the communication channel.

As a result of the above search, the load distribution control means 3
Transmits the data of the communication request to the highest priority one of the available communication channels 10 to 30, 50. The communication means T1 to T4 sequentially transmit the communication requests queued in each communication channel to the communication partner 2.

In this case, as described above, the communication means T1
From T4, the received communication requests are grouped according to the communication type and stored, and it is determined that communication is possible on condition that a certain number of communication requests are collected for each communication type, and then transmitted. As a result, a fixed amount of data can be transmitted at a time, and time spent for establishing a communication protocol and the like can be saved, and highly efficient communication can be performed.

In the example shown in FIG. 1, the communication means T1 to T3
Have communication channels 10 to 30, respectively, and can transmit and receive a plurality of types of communication. On the other hand, since the communication means T4 can transmit and receive only the communication channel 50, it is the same as a conventional dedicated line.

Thus, the communication request of the communication ID 10 is transmitted to the vacant communication channel 1 of the communication means T1 to T3.
Sent to 0. The same applies to the communication IDs 20 to 30. The communication ID 50 is always sent to the communication channel 50.

Thus, the communication request is sent to unspecified vacant communication means, and the communication line control system 1 can perform highly efficient communication as a whole. A specific communication load distribution control method will be described later.

Next, the configuration and processing of the load distribution control means 3, which are characteristic parts of the present invention, will be described below. FIG. 2 shows the structure of the class object of the load distribution control means 3.

The "object" is obtained by classifying data into certain attributes and integrating data and procedures. The object has the following features. (1) Objects (class objects) having the same attribute basically have the same method (means for performing a predetermined process). (2) Attributes and methods of a certain class object can be inherited by other class objects. (3) It is possible to request another object to perform processing by a method of the object.

The "object" in this specification includes software integrating the above data and procedures, and hardware for executing the object.

The constituent means of the load distribution control means 3 of this embodiment is composed of "objects". By making each processing means an "object", the system of the present invention can flexibly cope with various processes. However, this does not mean that the present invention is limited to an object-oriented framework. That is, the load distribution control means 3 may be realized by a processing device in which the same function as the object is controlled by a normal procedural program.

In FIG. 2, each object constituting the load distribution control means 3 is surrounded by a square line, and the upper row shows the object name, the middle row shows the attribute, and the lower row shows the method of the object.

As shown in FIG. 2, the core node indicated by reference numeral 3 has a main control unit 4, a communication unit management unit 5, a communication request management unit 6, and a request source communication terminal management unit 7. ing.

The communication means management section 5 comprises a communication means information management means 5a and a communication means management table management means 5b.

Communication means Information management means 5a
Is a means for managing, for each communication path maintaining communication between a predetermined communication request and a communication means for processing the communication request, information on the communication path and information on the communication means. The communication path is a communication path for the flow of information, in which a predetermined communication unit performs transmission / reception processing for a predetermined communication request. The communication means information management means 5a manages information on communication means (information specifying communication means) and information on other communication paths (for example, a communication protocol) for each communication path.

One communication means management table management means 5b exists in all systems, has a communication means management table, and manages the communication means information management means 5a. Here, the "management" between objects means, for example, a control in which the communication means management table management means 5b requests the communication means information management means 5a to search for information of a predetermined communication means and obtain an answer. To do. The same applies to "management" between objects.

The communication means management table is a table in which information of each communication means connected to the communication line control system 1 according to the present invention is registered. Here, the information of the communication means registered in the communication means management table is information specifying each communication means, a communication ID, and the like.

The communication request management unit 6 includes a reply watcher unit 6a and a communication request queue management unit 6
b and the communication request queue manager 6c.

The reply watcher means 6a exists for each communication request ID, registers information of a communication terminal waiting for a response, monitors a response, and transmits a response data when there is a response ( System for transmitting response communication data). The communication request ID is an identifier assigned to each communication request to identify the communication request.

The communication request queue management means 6b exists for each communication ID, manages information on communication means for transmitting and receiving the corresponding communication ID, and holds communication request communication data.

When there is a communication request, the communication request queue management means 6b searches for the communication means of the corresponding communication ID, transfers the communication data of the communication request, and registers the communication request until a response is received. It is something to keep.

Communication request queue manager means 6
c exists for each communication ID and manages the communication request queue management means 6b.

The request source communication terminal management unit 7 manages information on the communication terminal of the communication request transmission source for each communication request ID.

The above is a description of each component of the load distribution control means 3. Next, the operation of each component in communication will be described below. In the following description, referring to the configuration of the load distribution control unit 3 shown in FIG. 2, the relationship between the configuration units will be clearer.

First, the communication line control system 1 of the present invention
Must be connected to communication means to the system. FIG. 3 shows the flow of the connection process of the communication means. In the flowchart of FIG. 3, processing means for performing the processing of each processing step is shown in parentheses.

As shown in FIG. 3, in order to connect the communication means T1 to T4 to the communication line control system 1 of the present invention, the communication means T1 to T4 requesting the connection are connected to the main control unit 4 of the load distribution control means 3. To send an event requesting connection of the communication means.

The main control unit 2 (step S100) receiving the connection request event generates an event for connecting the communication means to the communication means connection reception channel (step S110). This event is processed as follows.

First, regarding the communication means for requesting a connection,
A new communication means information management means 5a is created, and communication path information and information on the communication means are registered (step S120).

Next, this new communication means is registered in the communication means management table (step S13).
0).

With the above processing, the communication means is connected to the system. Next, the connected communication means determines what kind of communication I
A communication ID declaration must be made as to whether transmission / reception of D is to be performed. FIG. 4 shows the flow of processing of the communication ID declaration. In the flowchart of FIG. 4, processing means for performing each processing step is shown in parentheses.

As shown in FIG. 4, the communication means for declaring the communication ID transmits a request for the communication ID declaration to the main control unit 4 of the load distribution control means 3 (step S200).

The main controller 4 receives the event of the communication ID declaration and receives the communication ID management table management means 5b.
The communication means management table management means 5b creates a communication means information management means 5a for the communication means, and registers the communication ID and communication means identification information in the communication means management table (step S210).

Next, the communication means is registered in the communication request management section 6. First, the communication means information management means 5a searches for a communication request queue manager means 6c having the same communication ID (step S220). If there is no communication request queue manager 6c with the same communication ID, a new one is created.

Next, the communication means information management means 5a reads the communication request queue manager means 6c searched or created in step S220.
Then, the information of the communication means making the communication ID declaration is registered (step S230).

Finally, the communication request queue manager 6c obtains the corresponding communication request queue manager 6b and registers the communication unit declaring the communication ID as a receivable communication unit (step S24).
0). Here, “acquisition” refers to a state where a predetermined object is searched and various messages can be sent via a link.

The communication ID declaration and its processing have been described above. When a predetermined communication means cannot communicate due to a communication failure, the communication means declares a communication ID release. The communication ID release declaration is achieved by tracing the same object as the communication ID declaration and deleting the registered communication means and information on the communication ID.

The communication means is connected, and the communication means is a communication ID.
The communication line control system 1 that has made the declaration performs communication processing as described below. Hereinafter, the flow of communication processing performed until the transmission of response data will be described.

The above communication includes transmission of a communication request from the communication terminal to the communication means and transmission of response communication data from the communication means to the communication terminal. These transmissions are all performed via the load distribution control means 3.

FIG. 5 shows a flow of transmitting a communication request from the communication terminal to the communication means. In the flowchart of FIG. 5, processing means for performing each processing step is shown in parentheses.

The communication request is issued from the communication terminal, and is input to the main control unit 4 of the load distribution control means 3 as a communication request event, as shown at the beginning of FIG. 5 (step S300).

Upon receiving the communication request event, the main control unit 4 generates the communication means information management means 5a for each communication path (step S310).

Next, the communication means information management means 5a generated in step S310 acquires the communication request queue manager means 6c of the communication ID corresponding to the communication ID of the communication request (step S320).

The communication request queue manager 6c obtained in step S320 obtains the communication request queue manager 6b having the same communication ID (step S330). The communication request queue manager 6c stores information (communication data) related to the communication request in the acquired communication request queue manager 6b.
Is passed (step S340).

The communication request queue management means 6b
Registers the information on the communication request in the communication request queue, that is, the communication request queue (step S350).

Next, the communication request queue management means 6b
Acquires the reply watcher means 6a, and registers the communication terminal of the communication request source as a response waiting communication terminal in this (step S360).

The reply watcher means 6a obtained in step S360 sets a response waiting timer for the communication request and monitors the response (step S370).

Next, the communication request queue management means 6b
Searches for communication means (specifically, a communication channel) that performs communication in accordance with a predetermined priority, and obtains a communication means information management means 5a which is a communication channel having the highest priority among communication means in a usable state. (Step S380).

Next, the communication means information management means 5a transmits communication data to the communication means having a low load (step S390). Thus, the communication request and the communication data are sent to the communication partner via the predetermined communication means.

The transmission of the communication request from the communication terminal to the communication means has been described above. In steps S380 and S390, the communication request queue management means 6b searches for the communication means having the highest priority among the communicable communication means. The communication line control system 1 of the present invention can distribute the load of the communication line by transmitting the communication data.

Next, processing for transmitting response communication data from a communication partner to a communication terminal via communication means will be described.

FIG. 6 shows the flow of transmission of response communication data from the communication means to the communication terminal. In the flowchart of FIG. 6, processing means for performing the processing of each processing step is shown in parentheses as in FIG.

The transmission event of the response communication data is transmitted from the communication means that has performed the communication, and is input to the main control unit 4 of the communication line control system 1 as shown at the beginning of FIG. 6 (step S400).

Upon receiving the response transmission event, the main control unit 4 acquires the communication means information management means 5a of the communication means which has transmitted the response (step S41).
0).

Next, the communication means information management means 5a obtained in step S410 obtains the communication request queue manager means 6c of the corresponding communication ID (step S420).

The communication request queue manager 6c obtained in step S420 obtains the communication request queue manager 6b having the same communication ID (step S430).

The communication request queue management means 6b obtained in step S430 deletes the communication request from the communication request queue (step S430).
440).

Next, the reply watcher means 6a
The data related to the communication terminal of the communication request source is deleted from the data of the communication terminal waiting for the response (step S450).

The communication request is deleted from the communication request management section 6 by the processing in steps S420 to S450 described above.

Next, the reply watcher means 6a
It accesses the communication means management table management means 5b and acquires it (step S460).

The communication means management table management means 5b acquires the corresponding communication means information management means 5a from the information of the communication means, and the communication means information management means 5a and the request source communication terminal management section 7 use the reply watcher means. 6a can obtain information on the requesting communication terminal (step S470).

Finally, the reply watcher means 6a
Transmits the processing result to the requesting communication terminal obtained as described above (step S480).

The above is the flow of processing of the load distribution control means 3 regarding transmission of a communication request and return of response communication data in the communication processing.

Next, the load distribution control means 3 searches for a communication channel of the communication means according to a certain priority order.
Send communication request data to the highest priority available communication channel "process,
The process of “backing up communication by another communication means that has become unable to communicate when there is a communication failure” will be described below using a specific example.

FIG. 7 shows a communication system for ordering stocks to which the present invention is applied. In FIG. 7, a plurality of lines L1 to L4 are connected to an exchange 8 (corresponding to the communication partner 2). Communication means T1 to T4 for transmitting order data are connected to the lines L1 to L4, respectively. The communication means T1 to T4 are connected to a load distribution control means 3 for transmitting an order request. A plurality of order terminals OTM1 to OTM3 (corresponding to communication terminals TM1 to TM5) are connected to the load distribution control means 3.

In this communication system for stock orders, it is assumed that order requests are processed by communication IDs 10 and 20 classified according to the type of order, basket order and single order. Just in case, basket order is a method of ordering by combining a plurality of stocks, and single ordering is a method of ordering a single stock. In addition, the communication ID can also be classified according to the ordering entity such as a consignment order and a self-order as appropriate.

The communication means T1 to T4 correspond to the exchange 8
And a line manager LM1 to LM4 that manages a communication channel, blocks an appropriate number of order data held in the communication channel, and transmits the blocking data to the exchange 8.

The line managers LM1 to LM3 include a basket order channel for receiving a basket order,
A single order channel for receiving a single order. Line manager LM4 has only a single order channel. That is, the lines L1 to L
Reference numeral 3 denotes a multi-purpose line for performing a basket order and a single order, and line L4 is a dedicated line for performing only a single order.

The basket order channel and the single order channel are pre-assigned the priority order to be used. The numbers shown below the basket order channel and the single order channel in FIG. 7 indicate the priority order of each order channel. That is, in the case of a basket order, the use state of the communication means is searched in the order of the communication means T1, T2, and T3, and in the case of a single order, the communication means T4, T3, and T are used.
The search is performed in the order of 2 → T1.

In the communication system for stock order having the above configuration, when the order terminals OTM1 to OTM3 issue requests for basket order or single order, each order request is processed as follows. Each order request is provided with communication IDs 10 and 20 for identifying a basket order or a single order.

First, the order request is sent to the load distribution control means 3. The load distribution control means 3 includes an order terminal OT
Whether the order request from M1 to OTM3 is a basket order or a single order is identified by the communication ID.

Next, if the order request is a basket order, the load distribution control means 3 communicates with the communication means T1 → T2 →
The use state of the basket order channel is searched in the order of T3, and if it is a single order, the communication means T4 → T3 → T2
→ The use state of the single order channel is searched in the order of T1. Each of the order channels declares the number of order requests that can be queued and held in advance. When the number of order requests in the queue of the order channel has reached the number declared in advance, the load distribution control means 3 determines that the order channel is in use and searches for the next order channel.

Thus, the load distribution control means 3
Send the order request to the highest priority order channel available. When all the order channels are in use, the load distribution control means 3 keeps the order request and keeps the line managers LM1 to LM1.
When the response communication data is transmitted from any of the LMs 4, the order channel is searched again.

The line managers LM1 to LM4 of the communication means T1 to T4 check order channels alternately,
The data of the order request that has arrived is taken out and exchange 8
Performs blocking processing with the number specified by the maximum value,
The order message is transmitted to the exchange 8. Line Manager L
When receiving the order acceptance notification from the exchange 8, the M1 to LM4 transmit the response communication to the order terminal OTM1 to OTM3 via the load distribution control means 3.

When a communication failure occurs in any of the communication means T1 to T4, the communication means T1 to T4 declare a communication ID release to the load distribution control means 3. This communication ID
As described above, the release declaration is realized by deleting the information of the communication means and the communication channel having the communication failure from the list of the communication means and the communication channels that can communicate.
When the communication ID is released, the load distribution control means 3 searches for the next communication means or communication channel assuming that the communication means or communication channel does not exist, so that the communication is eventually backed up by another communication means.

As described above, the communication line control system according to the present invention uses a plurality of communication means according to a certain priority order, and uses the next communication means when the communication means is in use. Is not fixed to a particular type of communication, but a certain type of communication is sent over the currently free line. As a result, it is possible to eliminate a problem that only a certain type of communication line is not transmitted due to an overloaded state of the communication line.

Further, as in the above example, by setting the priority order of each communication channel in random order with respect to the communication line, the communication line is used as a whole and the communication efficiency of the entire line is reduced. Can be improved.

The communication channel is the communication ID of the communication means.
Although set by the declaration, by appropriately setting the communication channel, a specific line can be appropriately used as a dedicated line like the line L4 in the above example.

Further, according to the communication line control system of the present invention, when a communication failure occurs in one of the communication means, the other communication line is used, so that the communication failure can be backed up in a fluid manner. .

In the above, the processing of "searching the communication channel of the communication means in accordance with a predetermined priority order and transmitting the data of the communication request to the highest available priority among the available communication channels" processing and the processing of "communication failure" The description of the process of “backing up communication by another communication means that has become unable to communicate when there is” is ended.
Next, an application example of the communication line control system according to the present invention will be described.

The communication line control system according to the present invention is essentially a "communication system for transmitting a large number of communications by a certain number of communication lines and communication means", and can be applied to a wide variety of communication systems. Such applicable communication systems include a communication system having a plurality of parallel communication lines, a client-server system, a system for transmitting and receiving data in a batch manner to a medium for high-speed transmission and reception such as an optical cable, and the like. For a communication system having a plurality of parallel communication lines, in a communication system for stock order described above or a communication system having a plurality of facsimile machines, a load distribution control means according to the present invention is provided between a facsimile machine and a communication terminal. A communication system that intervenes, distributes the communication load, and backs up due to a communication failure may be used. In a client-server system, for example, multiple distributed servers are connected to one center server,
In a client-server system in which a large number of clients are connected to these distributed servers, the load distribution control means according to the present invention is interposed between the clients and the distributed servers to distribute the load of the distributed servers and to cause a processing failure. In addition, a client-server system that is backed up by another distributed server can be considered. For a system for transmitting and receiving data in a batch manner to a medium for high-speed transmission and reception such as an optical cable, a plurality of communication means and a communication terminal for flowing data through a high-speed line are provided, and a load according to the present invention is provided between the communication means and the communication terminal. A high-speed communication system in which distributed control means is interposed and multipurpose communication is performed by one high-speed line is conceivable.

In this case, it is preferable that the communication means send the same type of data in a fixed data amount.
This has the effect of shortening the time for establishing a communication protocol for a medium for performing high-speed transmission and reception such as an optical cable, and enabling high-speed transmission and reception of a large amount of data.

[0113]

As is apparent from the above description, according to the communication line control system of the present invention, when a large number of types of communication are performed by a fixed number of communication lines and communication means, the communication means depends on the type of communication. The priority order of use is determined, and transmission / reception is performed by the communication means that is in a usable state and has the highest priority at that time, so that it is possible to perform fluid communication using the available communication means. . As a result, it is possible to prevent an inconvenience that a specific line is overloaded and communication cannot be performed.

Further, when a communication failure occurs in a specific communication means, communication can be performed by the communication means in the next priority order, so that the communication failure can be smoothly backed up.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an example of a communication line control system according to the present invention and a flow of processing thereof.

FIG. 2 is a block diagram showing a configuration of a load distribution control means of the communication line control system of the present invention and a flow of its processing.

FIG. 3 is a flowchart showing a process of connecting a communication unit to the communication line control system of the present invention.

FIG. 4 shows communication I in the communication line control system of the present invention.
9 is a flowchart illustrating processing of a D declaration.

FIG. 5 is a flowchart showing a flow of transmitting a communication request from a communication terminal to a communication means in the communication line control system of the present invention.

FIG. 6 is a flowchart showing the flow of transmission of response communication from a communication means to a communication terminal in the communication line control system of the present invention.

FIG. 7 is a block diagram showing the configuration and processing flow of a stock order communication system to which the communication line control system of the present invention is applied.

FIG. 8 is a block diagram showing a configuration and a processing flow of a conventional stock order communication system.

[Description of Signs] 1 Communication line control system 2 Communication partner 3 Load distribution control means 4 Main control unit 5 Communication means management unit 5a Communication means information management means 5b Communication means management table management means 6 Communication request management unit 6a Reply watcher means 6b Communication request queue management means 6c Communication request queue manager means 7 Requesting communication terminal management unit L1 communication line L2 communication line L3 communication line L4 communication line LM1 line manager LM2 line manager LM3 line manager LM4 line manager OTM1 order terminal OTM2 order terminal OTM3 order Terminal T1 communication means T2 communication means T3 communication means T4 communication means TM1 communication terminal TM2 communication terminal TM3 communication terminal TM4 communication terminal TM5 communication Communication terminal

Claims (6)

[Claims] At least one communication line, communication means respectively connected to the communication lines, load distribution control means connected to a plurality of the communication means, and a plurality of load distribution control means In a communication line control system having a communication terminal connected thereto, the communication means includes a communication ID classified according to a type of communication.
Wherein at least one communication channel through which communication of a certain communication ID is performed and which holds data of a certain number of communication requests in a queue is provided; Receives a communication request with a communication ID, searches for a communication channel passing through the same communication ID as the communication ID of the communication request in a predetermined priority order. A communication line control system, wherein the communication request data is transmitted to a high communication channel. 2. The load distribution control means receives a communication request with a communication ID from the communication terminal, and searches for a communication channel passing through the same communication ID as the communication ID of the communication request in a predetermined priority order. Transmitting the data of the communication request to the communication channel having the highest priority among the available communication channels, holding information of the communication terminal of the request source, and transmitting the data of the response communication to the communication of the request source. The communication line control system according to claim 1, wherein the communication line control system transmits the communication line to a terminal. 3. A communication means management unit which manages the communication means by using a communication ID and information for specifying the communication means, wherein a communication request of the communication terminal is generated, processed, and returned. A communication request management unit that manages the communication request, a request source communication terminal management unit that manages the communication terminal of the request source for each communication request, and a communication request or a response communication request. 3. The communication line control system according to claim 2, further comprising: a main control unit for distributing the communication line. 4. The communication means management unit according to claim 1, wherein said communication means manages a communication path and a communication means for each communication path for maintaining communication between a communication terminal which has issued a communication request and a communication means which performs communication of said communication request. A communication means for managing information; a communication means management table for registering the communication means and their communication IDs; and a communication means management table managing means for managing the communication means information management means. 4. The communication line control system according to claim 3, wherein: 5. The communication request management unit manages information of communication means for performing communication for each communication ID,
Communication request queue management means for holding communication request data; communication request queue manager means for managing the communication request queue management means for each communication ID; and a response to the communication request for each communication ID. 4. The communication line control system according to claim 3, further comprising: reply watcher means for managing transmission of response data when there is a response. 6. When a failure occurs in communication, the communication means sends a communication ID of the communication means and information for specifying the communication means to the load distribution control means. From the means management unit and the communication request management unit, search for communication means having the same communication ID as the communication ID sent from the communication means,
4. The communication line control system according to claim 3, wherein a communication failure is backed up by deleting information on the communication means that has become unable to communicate.