JPH01259651A - Communication system utilizing packet exchange network - Google Patents

Abstract

PURPOSE:To coexist a high respondence and economicality even when transmission data are different by providing the plural numbers of logical channels of which maximum packet size is different as a communication means between a terminal and a host and selecting one of plural logical channels having the maximum packet size suitable for the data quantity to transmit. CONSTITUTION:The plural numbers of logical channels 16a and 16b of which maximum packet size is different as the communication means between a terminal 12 and a host 14 and one of the logical channels 16a and 16b suitable for the data quantity to transmit is selected. Consequently, when the data transmission quantity is less, the increase of a transmission delaying time is prevented either by selecting the logical channel of a small packet size or by specifying a small maximum packet size, on the other hand, when the data transmission usage is frequent and fluctuates, the reduction of a communication cost can be attained either by selecting the logical channel of a large maximum packet size or by specifying the large maximum packet size.

Description

[Detailed Description of the Invention] [Required 1] Regarding a communication method using a packet switching network in which data is transmitted between a terminal and a host by specifying a packet size, the present invention provides a method for achieving high response and performance even when transmission data a fluctuates. In order to achieve both flexibility, when data transmission capacity is small, a logical channel with a small packet size is selected or a small maximum packet size is specified to prevent an increase in transmission delay time. If the number of packets varies, the configuration is configured so that a logical channel with a large maximum packet size is selected or a large maximum packet size is specified in order to reduce communication costs.

[Industrial Application Field] The present invention relates to a communication method using a packet switching network in which data is transmitted between a terminal and a host by specifying a packet size.

When transmitting large amounts of data using a packet-switched network, such as in banking transactions, it is better to transmit large packet sizes than to transmit small packets in small pieces. This is advantageous in terms of cost because it is small, and communication charges are low.

However, if a call is set up by specifying a packet size so that data with a large packet size can be transmitted, there is a drawback that the transmission delay time and amount of time required for small packet size data is the same as for large packet size data, resulting in a decrease in response. be.

Currently, in the packet switching network known as DDX-P, it is possible to specify the maximum packet size when setting up a call, and the maximum packet size is set independently for each direction of transmission and reception. be able to.

Therefore, when using a packet switching network, it is desirable to specify an efficient packet size according to the amount of data to be transmitted.

[Conventional technology] Conventionally, in banking transactions using packet switching networks,
Packet exchange between automatic transaction equipment installed on host and terminal
It connects via the h-network and performs data transmission associated with deposits, withdrawals, etc. using automatic transaction devices.

In automated teller machines, there are transactions that require a small amount of transmitted data, such as accountless withdrawals and balance inquiries using a card, and transactions that require a large amount of transmitted data, such as transactions using a bankbook.

For example, in the case of transactions using passbooks, in recent years there has been an increase in the number of card-only transactions due to the bulk of passbooks, an increase in the use of credit cards to purchase food, drinks, and products, and an increase in automatic transfers and withdrawals. The trend is that the amount of unrecorded data per account holder is considerable. Therefore, when making a transaction using a passbook, all the data that has been accumulated up to that point is flushed out all at once, resulting in a large amount of transmitted data.

In addition, depending on the terminal, there are transactions in which a large amount of files are transferred, such as bulk transfer of customer transactions during offline transactions, and downloading of failure information, maintenance information, etc. by the host.

On the other hand, when depositing money, withdrawing money, checking balances, etc. using a card, the amount of data transmitted is sufficiently smaller than transactions using a bankbook.

Although the amount of data transmitted between the automatic transaction device and the host varies greatly depending on the nature of the transaction, conventional automatic transaction devices do not use a uniform maximum bucket volume that is determined in advance. Packet communication is performed using calls with set sizes.

[Problem to be solved by the invention] Even though the amount of data transmitted varies depending on the nature of the transaction, if a call with a uniform maximum packet size is used for data transmission, the following problem will occur. arise.

First, if you specify a small maximum packet size, communication charges will be higher for transactions involving a large amount of data.

Conversely, if the maximum packet size is specified to be large, the amount of transmission delay time will increase for transactions involving a small amount of data.

The present invention was made in view of these conventional problems, and an object of the present invention is to provide a communication method using a packet switching network that can achieve both high responsiveness and economical efficiency even when the amount of data to be transmitted varies. do.

[Means for Solving the Problems] In order to achieve this object, the present invention provides a system that connects the terminal (automatic transaction device) 12 and the host 1 via the packet switching network 10.
A communication method using a packet switching network in which data is transmitted in response to a call request from a terminal 12 or a host 14 is configured as follows.

(First invention) As shown in FIG. 1 (a), a plurality of logical channels 16a and 16b with different maximum packet sizes are provided as a communication means between the terminal 12 and the host 14, and are adapted to the amount of data to be transmitted. One of the logical channels 16a, q6c having the maximum packet size is selected.

(Second invention) As shown in FIG. 1(b), a single logical channel 16 whose maximum packet size can be changed is provided as a means of communication between the terminal 12 and the hosts i to 14, and data to be transmitted is The maximum packet size of the logical channel 16 is changed depending on the amount.

(Third invention) As shown in FIG. 1(C), a single logical channel 16 whose maximum packet size can be changed is provided as a means of communication between the terminal 12 and the host 14, and the output from the terminal 12 is When the amount of data to be transmitted from the host 14 in response to a call request is determined, a maximum packet size suitable for the determined data is set; In case of undefined,
The terminal 12 requests the host 14 to make a call by initially setting a small maximum packet size, and in response to this call request, the host 14 notifies the terminal 12 of the amount of data scheduled to be transmitted.
Step 2 is to change the initially set maximum package size to suit the notification data carrier.

[Function] In a communication method using the packet switching network of the present invention having such a configuration, for example, in a transaction using a card with a small amount of transmitted data, a logical channel with a small maximum packet size is used. By selecting a small maximum packet size or specifying a small maximum packet size, it is possible to transmit data with high responsiveness without increasing transmission delay. In a transaction that fluctuates, selecting a logical channel with a large maximum packet size or specifying a large maximum packet size enables highly economical data transmission without increasing communication costs.

[Embodiment] FIG. 2 is an embodiment configuration diagram showing an embodiment of the present invention corresponding to the first invention of FIG. 1(a).

In FIG. 2, 12a is an automatic transaction device as a terminal, and the automatic transaction device 12a is connected via a packet switching network 10 to a host computer (hereinafter simply referred to as "host") 14 which has a business program 14a8 values*. Ru. That is, the packet switching network 10 is connected via the packet switching network 10 by the subscriber line 18 on the host 14 side and the subscriber line 20 on the automatic transaction device 12a side.

Regarding data transmission between the host 14 and the automatic transaction device 12a using such a packet switching network 10, in this embodiment, a business program executed by the main control unit 24 of the automatic transaction B 112a and a business program of the host 14 are transmitted. Two logical channels 16a and 1 are used as communication means between
6b@4Q can be determined.

Here, the logical channel 16a specifies a small maximum packet size both in the transmission direction in which data is sent from the automatic transaction device 12a to the host 14 and in the reception direction in which data is sent from the host 14 to the automatic transaction device 12a. On the other hand, the other logical channel 16b specifies a small maximum packet size in the transmission direction for sending data from the automatic transaction device 12a to the host 14, and a large maximum packet size in the reception direction for sending data from the host 14 to the automatic transaction device 12a. are doing.

Next, the configuration of the automatic transaction device 12a will be explained.

Logical channels 16a and 16b, which serve as communication means with the host 14 using the packet switching network 10, are connected to a line control unit 22, and the line control unit 22 is connected to the main control unit 24.
A call is set up for the host 14 using the logical channels 16a and 16b in response to the maximum packet size specified by the logical channels 16a and 16b.

The main control unit 24 has a channel selection function for specifying logical channels 16a and 16b according to the type of transaction, as well as control functions necessary for normal transactions.

The main control section 24 is provided with a keyboard 26 as an input means for transaction control by the account holder, and signals from the keyboard 26 are given to the main control section 24 via a key manual control section 28 . Further, the processing results of the main control section 24 are displayed via a display control section 30 on a display section 32 equipped with a display such as a CRT. Further, for card transactions, a card read/write receipt printing unit 36 is connected to the main control unit 24 via a card receipt control unit 34.
Further, a passbook printing section 40 is connected via a passbook printing control section 38 for passbook transactions. Furthermore, a banknote deposit and payout section 44 is connected via a banknote deposit and payout control section 42 for dispensing cash.

Next, the control function of the main control section 24 will be explained.

Here, it is assumed that six transactions are performed as online transactions by the automatic transaction device 12a: ■Card balance inquiry ■Card withdrawal ■Card deposit ■Bankbook entry ■Bankbook withdrawal ■Bankbook deposit. The main control unit 24 specifies the logical channel 16a for each of the transactions (1) to (2) using a card among the transactions (1) to (2) above. That is, ■~
Since the transaction in ■ is a card transaction, it is a bookless transaction.
Since the amount of data is generally small in both the transmission and reception directions, a logical channel 16a with a small maximum packet size specified in both the transmission and reception directions is used.

On the other hand, in the case of transactions using the passbooks described in ■ to ■ above, since the amount of unrecorded data in the reception direction from the host 14 to the automated teller machine 12a is large, a logical channel with a large maximum packet size specified in the reception direction is used. 16b@Select and use.

FIG. 3 is an operational flow diagram of the main control section of the automatic transaction device 12a in the embodiment of FIG. 2.

In Figure 3, the account holder uses the card to
It is assumed that a transaction operation such as checking the balance, withdrawing money, or depositing money is performed in ~■.

For transactions using such cards, first step S
At step 1, it is checked whether the transaction type is a card transaction, and if it is a card transaction, the process proceeds to step S2 and selects the logical channel 16a with the small maximum packet size (receiving and transmitting directions).

In step S4, the automatic transaction device 12a transmits transaction data for card balance inquiry, card withdrawal, or card deposit. The host 14 that has received this transaction data sends corresponding response data to the automatic transaction device 12a through the logical channel 16a, and when inquiring about the balance, the host 14 sends the corresponding response data to the automatic transaction device 12a.
In addition to displaying the balance, the card read/write receipt printing unit 36 prints out the balance, and in card withdrawal transactions, the banknote deposit/dispensing unit 44 pays out banknotes, and the card read/write receipt printing unit 36
The payout amount and balance are printed out, and when the card is deposited, the banknote deposit and payout section 44 takes the bill into the device, and the card read/write receipt printing section 36 prints out the deposit amount and balance.

On the other hand, when the account holder performs transaction operations such as bookkeeping, withdrawal, or deposit using a passbook, it is determined in step S1 of FIG. 3 that the transaction type is a passbook transaction, and step S
3, the logical channel 16b has a large maximum packet size, that is, the logical channel 1 has a small maximum packet size in the transmission direction and a large packet size in the reception direction.
6b is selected, and data transmission using the logical channel 16b is performed in step S4.

In this way, in the embodiment of FIG. 2, either the logical channel 16a having a small maximum packet size or the logical channel 16b having a large maximum packet size is selected depending on the data conversion determined by the type of transaction. Therefore, it is possible to transmit data using the maximum packet size suitable for data conversion, and it is possible to achieve both the high responsiveness required of the automatic transaction device 12a and the economic efficiency when using the packet switching network 10.

In the embodiment shown in FIG. 2, the logical channels 16a and 16b are selected separately for card transactions and bankbook transactions as shown in the operation flow diagram of FIG. For example, the logical channel 16a or 16b may be selected by determining data conversion corresponding to the transaction type. For example, even in a passbook transaction, when the amount of unrecorded data is small, specify the logical channel 16a with a small maximum packet size, and when a large amount of unrecorded data occurs, specify the logical channel 16a with a large maximum packet size (receiving direction). 16b may be selected.

Figure 4 shows the two logical channels 16 shown in Figures 2 and 3.
It is an explanatory diagram showing the communication state between the host 14 and the automated teller machine 12a when data transmission is performed by selecting a and 16b according to the transaction type, and is an explanatory diagram showing the communication state between the host 14 and the automated teller machine 12a, regarding card balance inquiries, card withdrawals, and card deposits. The logical channel 16a with a small maximum packet size is specified for transmission and reception, while for bookkeeping, bankbook withdrawals, and bankbook deposits, the logical channel is configured with a small maximum packet size in the transmission direction and a large maximum packet size in the reception direction. 16b is used for data transmission.

FIG. 5 is an embodiment configuration diagram showing another embodiment of the present invention corresponding to the second invention of FIG. 1(b).

In FIG. 5, a single logical channel 16 is connected as a communication means between the business program in the main control unit 24 of the automatic transaction device 12a and the business program 14a of the host 14, which are connected via the packet switching network 10. It will be established. The logical channel 16 can change the setting of a small maximum packet size and a large maximum packet size when the automatic transaction device 12a makes a call to the host 14.

Therefore, the main control unit 24 of the automated teller machine 12a sets a call by specifying the small maximum packet size of the logical channel 16 when making a card transaction, while specifying the small maximum packet size of the logical channel 16 when making a passbook transaction. Set up a call specifying the maximum packet size.

The other groove bottoms are the same as in the embodiment shown in FIG.

FIG. 6 is an operation flow diagram of the main control section 24 in the automatic transaction device 12a shown in FIG.

Here, the automatic transaction device 12a is similar to the embodiment shown in FIG.
It is assumed that 6 transactions will be performed: ■ Card balance inquiry ~ ■ Passbook deposit. In addition, a small maximum packet size is specified for card transactions such as ■Card balance inquiry, ■Card withdrawal, and ■Card deposit.

That is, since card transactions are non-book transactions and the amount of data is generally small in both the transmission direction and the reception direction, a small maximum packet size may be specified.

On the other hand, a large maximum packet size is specified for each transaction of ■Book entry, ■Passbook withdrawal, and ■Passbook deposit. That is, in passbook transactions, the amount of data in the sending direction is generally small, but in the receiving direction, if there is unrecorded data, the amount of data increases, so a large maximum packet size is specified.

The operation flowchart of FIG. 6 will be explained as follows, based on the premise of transactions by such automatic transaction device 12a.

First, in step S1, it is determined whether the transaction type is a card transaction. If it is a card transaction, proceed to step S2 to specify a small maximum packet size, set up a call with the specified packet size in step S4, establish a communication line with the host 14 through the logical channel 16, and step S5
data transmission, i.e. from the automatic transaction device 12a to the host 14.
Data transmission to and from the host 14 to the automated transaction device 12
Data is transmitted to a.

On the other hand, if a passbook transaction is determined in step S1, the process proceeds to step S3 where a large maximum packet size is specified, a call is similarly set up in step S4, and data transmission is performed in step S5.

FIG. 7 is an explanatory diagram showing the communication state between the automatic transaction device 12a and the host 14 in another embodiment of the present invention shown in FIGS. Make a call specifying the optimal maximum packet size for the direction,
When the connection is completed, the corresponding data is transmitted from the hosts 1 to 14 to the automatic transaction device 12a. In this case, if the optimal maximum packet size has already been specified, it goes without saying that resetting will not be performed.

In this way, even in the embodiment shown in FIG. 5, since a call is set up by specifying the maximum packet size that corresponds to the data interval associated with the type of transaction, the maximum packet size that is suitable for the amount of data cannot be determined. This makes it possible to achieve both high responsiveness required of the automatic transaction device 12a and economic efficiency that can reduce communication costs when using the packet switching network 10.

FIG. 8 is an operation flow diagram of the main control section 24 in the automatic transaction device 12a corresponding to the third invention of FIG. 1(C).

The system configuration for executing the operation flow diagram of FIG. 8 corresponding to the third invention has the same configuration as the embodiment of FIG. 5. That is, a single logical channel 16 is established using the packet switching network 10 as a means of communication between the business program of the automatic transaction device 12a and the business program 14a of the host 14.
is provided, and the setting of the logical channel 16 can be changed between specifying a small maximum packet size and specifying a large maximum packet size.

Further, as with the embodiment shown in FIG. 5, there are six transactions by the automatic transaction device 12a: (1) card balance inquiry to (2) bankbook deposit.

The third invention will be described in detail as follows with reference to the operational flow diagram of FIG.

When the account holder operates the automatic transaction device 12a using a card or passbook, it is checked in step S1 whether the transaction has a fixed amount of data.

In other words, the amount of transaction data is fixed for ■Card balance inquiry, ■Card withdrawal, and ■Card deposit, while the amount of data for ■Passbook entry, ■Passbook withdrawal, and ■Passbook deposit depends on the degree of unrecorded data. Since the data ω changes, the data ω
is an uncertain transaction.

When it is determined in step S1 that it is a so-called card transaction for which the amount of data has been determined, the process proceeds to step S9 and the maximum packet size that is compatible with the determined amount of data is specified. That is, since the amount of data in a card transaction is small, a small maximum packet size is specified. Next, step S
10 sets up a call to the host with the specified packet size,
In step S8, data is transmitted from the automatic transaction device 12a to the host 14, and from the host 14 to the automatic transaction device 12a.
Perform data transmission to.

On the other hand, if a passbook transaction in which the data ω is uncertain is determined in step S1, the process proceeds to step S2, where a small maximum packet size is specified, and a call is set up to the host 14 using the specified packet size in step S3, and the transaction is made. Transmit the request message. In other words, even in passbook transactions, the automatic transaction device 1
Since the amount of data to be transmitted from 2a to host 14 is small, the call is set up by specifying a small maximum packet size.

This step S2. When the host 14 receives the transaction request message according to the 82 standard of the call specifying a small packet size in S3, the host 14 sends scheduled communication data corresponding to the contents of the transaction request message, that is, ■ bankbook entry, ■ bankbook withdrawal, or ■ bankbook deposit. A transaction permission message including the amount notification is transferred to the automatic transaction device 12a.

In step S4, it is checked whether or not a data ω notification has been received based on the transaction permission message from the host 14. When a data inter-data notification is received, the process proceeds to step S5, and the maximum packet size that is compatible with the amount of notification data from the host 14 is determined. specify. At this time, if there is less data ■, the transaction data is transmitted from the host 14 in step S8 without changing the small maximum packet size initially set in step S2. On the other hand, if a large amount of notification data occurs, such as unrecorded data, the initially set small maximum packet size is changed to a large maximum packet size, and a change in the packet size is determined in step S6. The process then proceeds to step S7, where a call is re-established using the newly set large maximum packet size, and data is transmitted from the host 14 to the automatic transaction device 12a in step S8.

FIG. 9(a) is an explanatory diagram showing the communication operation between the automatic transaction device 12a and the host 14 according to the third aspect of the present invention over time according to the operation flowchart of FIG. Figure (b) also shows the passbook withdrawal process in the automatic transaction device 12a.

For example, assume that the account holder performs a withdrawal process using a passbook in FIG. 9(b). In a withdrawal transaction using this passbook, the user inserts the passbook, enters the password, and then enters the deposit amount. When these bankbook withdrawal operation inputs are completed, a transmission journal print is performed, and then a transmission process, a reception process, and a reception print having the contents shown in FIG. 9(a) are performed. When such communication processing with the host is completed, the series of processing is completed through cash counting, print imprinting, and passbook return.

Incidentally, FIG. 9(b) also shows the processing of bankbook deposits and cardholder withdrawals in addition to bankbook withdrawals.

In the communication process of FIG. 9(a), since the transaction is a passbook transaction, the maximum packet size is first specified to be small and the call is connected. Note that if a call with a maximum packet size or a smaller size has already been set, resetting is not necessary. Following the setting of a call from the automatic transaction device 12a to the host 14, the automatic transaction device 12a transmits a transaction request message to the host 14, and the host 14 that received the transaction request message
sends the transaction permission message containing the scheduled data amount to the automatic transaction device 12.
Send it back to a. If a large amount of unrecorded data is generated based on the amount of notification data included in the transaction permission message, the automatic transaction device 12a specifies a larger maximum packet size and resets the call. Of course, if the amount of notification data is small (if the amount of notification data is small), the initial setting of the maximum packet size will not be changed.

Subsequently, the automatic transaction device 12a requests the host 14 for a subsequent message, and in response, the host 14 requests the following message:
For example, in the case of unrecorded data, the unrecorded data is transmitted as in telegrams 1 to n using a designated large packet size, and printed out on a passbook in the automatic transaction device 12a.

In this way, even in the third invention shown in the operation flow diagram of FIG. 8, for transactions where the amount of data is uncertain, the optimal maximum packet size is specified based on the notification of the expected amount of data from the host. Therefore, since a small maximum packet size is specified when the amount of data is small, the amount of transmission delay time in the packet switching network is reduced and the high responsiveness required of automatic transaction equipment can be satisfied. By specifying a large maximum packet size when the amount is large, it is possible to reduce the communication cost of the packet switching network and achieve economic efficiency.

Although the above-mentioned embodiment takes as an example a communication method using a packet switching network in bank transactions between an automated teller machine and a host, the present invention is not limited to this, and can be used with an appropriate terminal. It can be directly applied to data transmission using a packet switching network between hosts.

[Effects of the Invention] As explained above, according to the present invention, it is possible to select a logical channel with a maximum packet size suitable for the amount of data, or to specify a maximum packet size suitable for the amount of data, so that the amount of data can be reduced. When the amount of data is small, the transmission delay time of the packet-switched network can be reduced to achieve high responsiveness, while when the amount of data is large, the communication cost of the packet-switched network can be reduced to improve economic efficiency and the communication between the terminal and the host can be improved. It is possible to achieve both high responsiveness and economic efficiency.

[Brief explanation of the drawing]

Fig. 1 is a diagram explaining the principle of the present invention; Fig. 2 is an embodiment groove bottom diagram showing an embodiment of the present invention (Fig.
Invention): Fig. 3 is an operational flow diagram of the automatic transaction device main control section of Fig. 2; Fig. 4 is an explanatory diagram of the communication state of the embodiment of Fig. 2; Fig. 5 is an illustration of another embodiment of the present invention. Bottom view (second invention): Fig. 6 is an operation flow diagram of the main control unit of the automatic transaction device shown in Fig. 5; Fig. 7 is an explanatory diagram of the communication state of the embodiment shown in Fig. 5; An operation flow diagram of the automatic transaction device main control unit in another embodiment of the invention (third invention): Fig. 9 is an explanatory diagram showing the communication state of the embodiment of Fig. 8 together with the withdrawal process. , 10: Packet switching network 12: Terminal 12a: Automatic transaction device 14: Host 16a, 16b, 16: Logical channel 18.20: Participating line 22: Line υj control section 24: Main control section 26: Keyboard 28: Key manual control Section 30: Display control section 32: Display section 34: Card receipt control section 36: Card read/write receipt printing section 38 Two bankbook printing control section 40: Bankbook printing section 42: Banknote deposit and payout control section 44: Banknote deposit and payout section own weight l Matau IIL 5th grade ゛ 1 existence P sound p Work and residence flow diagram Figure 8 翫 Takakai - Host 1st student Shiratsuki Rikimimatayumi 1 Rinki Takutan A
i divination] person 1 粍 4 已 yong - mingling a Figure 4 Figure 6

Claims (3)

[Claims] (1) Connect the terminal (12) and host (14) via the packet switching network (10),
4) A communication method that uses a packet switching network to transmit corresponding data from the host (14) in response to a call request from the host (14), and serves as a means of communication between the terminal (12) and the host (14). A plurality of logical channels (16a, 16b) having different maximum packet sizes are provided, and one of the plurality of logical channels (16a, 16b) having a maximum packet size suitable for the amount of data to be transmitted is selected. A communication method that uses a packet-switched network. (2) Connect the terminal (12) and host (14) via the packet switching network (10),
4) A communication method that uses a packet switching network to transmit corresponding data in response to a call request from a device, and the maximum packet size is set as a means of communication between the terminal (12) and the host (14). A packet communication system characterized in that a single changeable logical channel (16) is provided, and the maximum packet size of the logical channel (16) is set to an optimum size according to the amount of data to be transmitted. (3) Connect the terminal (12) and host (14) via the packet switching network (10),
4) A communication method that uses a packet switching network to transmit corresponding data in response to a call request from a device, and the maximum packet size is set as a means of communication between the terminal (12) and the host (14). A single changeable logical channel (16) is provided, and when the amount of data from the host (12) in response to a call request from the terminal (12) is determined, the maximum packet corresponding to the defined data amount is Set size and terminal (12)
If the amount of data from the host (14) in response to a call request is undefined, the terminal (12) requests the host (14) to make a call by initially setting a small maximum packet size, and the call request is from the host (14) to the terminal (12) depending on
A communication method using a packet switching network characterized by notifying a scheduled amount of data to be transmitted to a communication system and changing an initially set maximum packet size to match the notified amount of data.