JPH0783372B2 - Communication controller in storage-type information communication network - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Industrial field of application) The present invention relates to a storage type information communication network having a storage function and a conversion function of communication information, and stores information stored by a storage type communication processing device. The present invention relates to a communication control device in a storage-type information communication network that transmits to a terminal device via a telephone network.

(Prior Art) FIG. 6 is a diagram showing a conventional configuration of a storage-type information communication network that provides a storage-type communication processing service. In the figure,
Information input / output terminal devices 1 and 2 for transmitting and receiving information are telephone exchanges.
The telephone lines 5 and 6 are connected in parallel with the telephones 3 and 4, and are connected to the storage type communication processing device 9 through the gateway exchanges 7 and 8. Reference numeral 10 is an information communication upper level network including a storage type communication processing device 9 and barrier exchanges 7 and 8.

The information transmitted from the information input / output terminal device 1 passes through the telephone exchange 5 and the gateway exchange 7, and the storage type communication processing device 9
Accumulated in. The storage-type communication processing device 9 stores the stored information in the gateway exchange 8 that accommodates the information input / output terminal device 2 on the receiving side.
And to the information input / output terminal device 2 via the telephone exchange 6.

In the storage-type communication processing device 9, when transmitting the stored information to the information input / output terminal device 2 on the receiving side, the line must be connected to the information input / output terminal device 2 via the gateway exchange 8 to the telephone exchange 6. To request. At this time, when the line between the storage-type communication processing device 9, the gateway exchange 8, the telephone exchange 6, and the information input / output terminal device 2 cannot be connected because it is in use, the storage-type communication processing device 9 stores the communication information. Wait for the transmission as it is. After a lapse of a certain time, the telephone exchange 6 is requested again via the gateway exchange 8 to connect the line to the information input / output terminal device 2. If the line can be connected, the storage type communication processing device 9 transmits the communication information to the information input / output terminal device 2. However, if the line is still in use,
Wait for the transmission of communication information again.

In this type of storage-type information and communication network, line connection requests from the storage-type communication processing unit 9 are concentrated in a short time by means of broadcast communication in which one call is made to a plurality of destinations. The line between the portable communication processing device 9, the gateway exchange 8, the telephone exchange 6, and the information input / output terminal device 2 is in a congested state, and the storage type communication processing device 9 easily waits for communication information.

Conventionally, the storage-type communication processing device 9 makes a line connection request to the information input / output terminal device 2 of the call at the time when the communication information is stored, and also for the call that is queued in the storage-type communication processing device 9. Line connection requests are made at specific intervals. Therefore, when line connection requests from the storage-type communication processing device 9 concentrate in a short time due to broadcast type communication, etc., the storage-type communication processing device 9, the gateway exchange 8, the telephone exchange 6, and the information input / output terminal device 2 are connected. 7 is congested, and as shown in FIG. 7, a large amount of communication information for which a line connection request is made is likely to be in a waiting state at the same time in the storage-type communication processing device 9, and the communication information in the waiting state is kept for a certain time. After that, the line connection requests are made all at once again, so it is easy to wait again.

(Problems to be Solved by the Invention) In the conventional communication control method, when many communication requests are simultaneously generated in the storage-type information communication network, the line-connection requests are centralized in a specific cycle by the storage-type communication processing device 9. Therefore, there is a problem that the use efficiency of the line is deteriorated and the communication information in the storage-type communication processing device 9 is in a waiting state for a long time, which delays the transmission to the receiving terminal.

The present invention has been made in view of the above, and an object thereof is to improve the use efficiency of a line by distributing line connection requests and reduce the waiting time for transmission of communication information to a receiving terminal. An object of the present invention is to provide a communication control device in such a storage type information communication network.

[Structure of the Invention] (Means for Solving Problems) In order to solve the above problems, there is provided a storage communication processing device having a function of storing and converting information transmitted from a terminal device via a switching network. In the storage-type information communication network,
A communication control device for controlling connection of a line from a storage type communication processing device to a terminal device for transmitting stored information from the storage type communication processing device to a terminal device. A plurality of request accepting devices that accept connection requests for lines between terminal devices, a selection unit that selects one of the request accepting devices, and a line connection request call are registered in the request accepting device selected by the selecting unit. Registration means, a starting means for selecting and activating one of the request accepting devices in a predetermined cycle, and a storage-type communication processing device for a call registered in the request accepting device activated by the starting means. The gist of the present invention is to have a line connection request means for making a line connection request between terminal devices.

(Operation) In the communication control device in the storage type information communication network of the present invention, the line connection request is registered in one of the plurality of request receiving devices, and one of the registered plurality of request receiving devices is registered. Is selected and activated in a predetermined cycle, and a line connection request is made for a call registered in the activated request acceptance device.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a storage type information communication network for providing a storage type information communication service provided with a communication control device according to an embodiment of the present invention. The storage-type information communication network shown in the figure includes a line connection control device 11 constituting the communication control device of the present embodiment between the gateway exchanges 7 and 8 in the information communication host network 10 and the storage-type communication processing device 9. Except for being provided, it has the same configuration as the storage type information communication network of FIG. 6 described above, and the same components are assigned the same reference numerals.

The line connection control device 11 includes a line connection waiting call registration device group 12
And a line connection waiting call registration controller 13 and a line connection request timer 14.

FIG. 2 is an explanatory diagram showing the operation of the communication control system between the storage-type communication processing device 9 and the line connection control device 11 of FIG. The storage-type communication processing device 9 receives the telephone exchange 5 and the gateway exchange 7 from the information input / output terminal device 1 and transmits the accumulated communication information to the information input / output terminal device 2 of the other party,
The identification number of the outgoing call, the receiving terminal number, the priority of the line connection and other attached information are transmitted to the line connection control device 11 to request the line connection to the receiving terminal 2 (process 110).
The line connection control device 11 is a line connection waiting call registration control device.
1 in the device group 12 for line connection waiting call registration by control of 13
A device is selected to register the call (process 120). The selection method of one line connection waiting call registration device in the line connection waiting call registration control device 13 includes a minimum waiting call number selection system and a device circulation selection system, which will be described later.

On the other hand, the line connection request timer 14 takes out one device from the line connection waiting call registration device group 12 at regular intervals and activates the device. The activated line connection waiting call registration device requests line connection to the incoming information input / output terminal device 2 via the gateway switch 8 for the registered call (process).
130). As a result of the line connection request, if the line can be connected to the incoming information input / output terminal device 2, the storage-type communication processing device 9 is notified together with the call identification number that the line connection is completed (processes 140 and 150). After receiving these pieces of information, the storage-type communication processing device 9 starts transmitting the stored communication information (processing 160).

When the line connection to the incoming information input / output terminal device 2 is not possible (process 170), the line connection control device 11 causes the process 1
Steps 20 and 130 are repeated, that is, the line connection waiting call registration control device 13 again sets 1 in the line connection waiting call registration device group 12.
Select a device to register the call, and use the line connection request timer 14
Wait for the device to be activated by.

FIG. 3 and FIG. 4 are explanatory views of the above-mentioned minimum waiting call number selection system and device cyclic selection system, respectively.

First, the minimum waiting call number selection method is as shown in FIG.
When the line connection waiting call registration control device 13 of the line connection control device 11 selects one device from the line connection waiting call registration device group 12 in response to a line connection request from the storage type communication processing device 9 This is to select the line connection waiting call registration device with the smallest number of calls and register the call to the device.

In the device cyclic selection method, as shown in FIG. 4, line connection request calls from the storage type communication processing device 9 are sequentially registered in the line connection waiting call registration device one by one.

The former method of selecting the minimum waiting call number can minimize the average waiting time in the network for calls, but the variation in the line connection request interval for each call becomes large. In addition, the latter device cyclic selection method has a longer average call waiting time in the network than the former, but
Variations in the line connection request interval for each call are eliminated.

Further, as a selection method, in addition to these methods, a method in which priority or the like which is attached information is considered may be considered. Which method is to be adopted depends on the content of the service.

FIG. 5 is a graph showing the result of evaluation by simulation of the effect of reducing the hold time of the communication information in the storage-type communication processing device 9 according to the present invention. The horizontal axis represents the call volume applied to the storage-type communication processing device by Erlang ( erl), and the vertical axis shows the transmission delay time in seconds. In the graph, curve A
And B are graphs showing the transmission delay time with respect to the call volume by the communication control device in the storage type information communication network of the present invention which adopts the above-mentioned minimum waiting call number selection system and device round trip selection system, respectively, and the curve C is the conventional one. It is a graph of the transmission delay time by the communication control method. As is clear from the graph, the characteristics shown by the curves A and B of the present invention are much shorter than the characteristics shown by the conventional curve C, and the smooth information communication service is possible.

[Effects of the Invention] As described above, according to the present invention, a line connection request is registered in one of the plurality of request receiving devices, and one of the registered plurality of request receiving devices is registered. Since the line connection request is made for the call registered in this selected device and the line connection request is distributed in the upper network of the storage-type information communication network, the line is efficiently used to receive the call. The communication information can be quickly transmitted to the terminal device.
That is, the hold time of the communication information in the storage communication processing device can be shortened and the communication information can be quickly transmitted to the receiving terminal device.

[Brief description of drawings]

FIG. 1 is a block diagram of a storage type information communication network to which a communication control apparatus according to an embodiment of the present invention is applied, and FIG. 2 is an explanatory view of the operation of the communication control apparatus in the storage type information communication network of FIG.
3 and 4 are explanatory views of the call registration selection method used in the communication control device in the storage type information communication network of FIG. 1, and FIG. 5 shows the information transmission delay time characteristic of the present invention and the conventional one. FIG. 6 is a graph, FIG. 6 is a block diagram of a conventional storage type information communication network, and FIG. 7 is a diagram for explaining problems with the conventional communication control method. 1,2 ...... Information input / output terminal device 3,4 ...... Telephone, 5,6 ...... Telephone switch 7,8 ...... Gate switch, 9 ...... Storage type communication processing device 10 ...... Information communication upper network, 11 ... … Line connection control device 12 …… Line connection waiting call registration device group 13 …… Line connection waiting call registration control device 14 …… Line connection request timer

Front page continuation (72) Inventor Kei Katayama 3-9-11 Midoricho, Musashino City, Tokyo Inside Nippon Telegraph and Telephone Corporation, Communication Network 1st Research Laboratories (56) Reference JP-A-59-135953 (JP, A)

Claims (3)

[Claims] 1. In a storage type information communication network having a storage type communication processing device having a function of storing and converting information transmitted from a terminal device via a switching network, the stored information is transferred from the storage type communication processing device to the terminal device. Communication control device for controlling the connection of the line from the storage-type communication processing device to the terminal device for transmitting to the plurality of request receiving devices for receiving the connection request of the line between the storage-type communication processing device and the terminal device. A selecting means for selecting one of the request accepting devices, a registering means for registering a line connection request call in the request accepting device selected by the selecting means; Means for selecting and activating one of the devices, and a line connection for making a line connection request between the storage-type communication processing device and the terminal device for the call registered in the request receiving device activated by the activating device. The communication control device in the storage type information communication network; and a request unit. 2. The storage type according to claim 1, wherein the selecting means has a minimum waiting call number selecting means for selecting a device having the smallest number of registered calls among the request accepting devices. A communication control device in an information communication network. 3. The storage type information communication network according to claim 1, wherein said selecting means has a cyclic selecting means for sequentially registering the line connection request calls to the request accepting device one by one. Communication control device.