JPS624029B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides mailbox usage status notification in mailbox communication in which memory owned by the network is lent to terminals joining the network and the terminals communicate with each other using the memory in a data exchange network. It is related to the method.

Conventionally, in a data exchange network with a storage function, the network side provides memory to terminals, and the terminals are able to communicate using the memory, which allows for mailbox communication.The forms of communication are (1) mailbox contract terminals; writes a message to the mailbox, and an unspecified or specific terminal reads the message.

(2) The mailbox contract terminal receives a message from an unspecified or specific terminal in the mailbox and reads the message.

can be considered as a representative example.

In particular, in the communication form (2), it is difficult for the mailbox contract terminal to understand traffic such as the usage rate of the mailbox and the number of stored messages, which fluctuate over time, using only the usage status inquiry function. The disadvantage of this method is that it places a heavy burden on the terminal operator because it is necessary to make a call from the terminal each time.

The present invention eliminates such drawbacks of the conventional ones.According to the present invention, in a data exchange network having a storage function, the memory owned by the network is provided to the subscribers as a mailbox, and the memory is used as a mailbox. In the mailbox communication method for communicating between subscribers, the network side manages the usage status of memory lent to subscribers, and the management information of the memory usage status is specified by the registration from the memory contract subscriber. A mailbox usage status notification method in mailbox communication is obtained, which is characterized in that the network notifies the memory subscriber terminal at the specified time or at specified time intervals.

Fig. 1 is a circuit configuration diagram of an embodiment of the present invention;
3 shows a signal sequence in normal mailbox communication.

The normal mailbox write and read inquiry operations will be specifically described with reference to FIGS. 1, 2, and 3.

In FIG. 2, when the exchange SSC having the storage function receives the mailbox write request signal a from the mailbox write terminal TA, it sends the message information management unit 2 of the mailbox management unit 1 in FIG. Mailbox write message length A and write judgment instruction B are sent, and write permission result F is obtained.

The message information management unit 2 compares the mailbox write message length A with the remaining area size of the mailbox, outputs the comparison result as a write permission result F, and if writing is possible, the message information management unit 2 The number of messages stored in the mailbox, the remaining area size, and the usage rate are calculated, a write instruction A1 is given to the message management information area 4, and the calculation result B1 is stored. If the write permission result F indicates that writing is not possible, the mailbox writing terminal TA is notified to that effect, but if writing is possible, it sends a write signal b and receives the message c from the terminal TA. Write the message in your mailbox.

The mailbox write operation is executed in accordance with the instruction of the write address D1 when a write message C is sent to the mailbox 3 and a mailbox write instruction D is sent to the message information management section 2 in FIG.

When writing is completed, a write completion signal d in FIG. 2 is sent to the mailbox writing terminal TA, and communication is terminated with a disconnection signal e and a disconnection confirmation signal f.

On the other hand, the exchange SSC is a mailbox contract terminal.
When receiving the mailbox read request signal g from the TB, it checks the status of the designated mailbox, sends out a readable signal h, and sends out the message i in the mailbox.

In the mailbox reading operation, the mailbox reading instruction E is sent to the message information management unit 2 in FIG.
The contents of the mailbox are output as the read result M.

After outputting the message in the mailbox to the mailbox contract terminal TB, the disconnection signal j in Fig. 2,
Communication is terminated with a disconnection confirmation signal k.

In FIG. 3, when the switching center SSC having the storage function receives the mailbox inquiry request signal l from the mailbox contract terminal TB, it checks the status of the designated mailbox, sends an inquiry enable signal m, and sends the mailbox usage status n. is sent, and the communication is terminated with a disconnection signal j and a disconnection confirmation signal k.

In the mailbox inquiry operation, the mailbox inquiry instruction G is sent to the message management information area 4 in FIG. 1, and the usage status of the mailbox is output as the usage status result L.

The above are mailbox write, read, and inquiry operations in normal mailbox communication.

However, using only the above-mentioned inquiry method, it is difficult for the mailbox contract terminal to grasp the time-varying mailbox traffic, and there is a drawback that the burden on the operator for mailbox inquiries increases.

The present invention further enhances the functions of the mailbox and eliminates the above-mentioned drawbacks.The specific operation will be explained below with reference to FIGS. 1 and 4.

Mailbox write, read, and inquiry operations can be performed in the same manner as the normal sequence described above, but the present invention further adds a time counting function to the mailbox management section of the switching center SSC, and The system is characterized in that the mailbox usage status is sent from the switching center SSC by calling the mailbox contract terminal at a time designated by the contract terminal or at time intervals.

Specifically, in FIG. 1, a clock circuit 6, a specified time storage section 8, a specified time storage conversion section 7, a coincidence circuit 5, and a time specification request holding circuit 9 are added to the mailbox management section 1, and the clock circuit 6 is Specified time storage section 8
When the output values become the same, the matching circuit 5 issues an inquiry request G1 to the message management information area 4.When a time specification request is made, the time data H is stored at the specified time according to the time specification instruction K. 8, and at the time of a time designation request, the time data I is held in the time storage part of the designated time storage conversion part 7 by the time designation instruction J, and at the same time, the time data I is stored in the time storage part of the designated time storage conversion part 7 by the time conversion function of the designated time storage conversion part 7. and stored in the designated time storage section 8.

Then, the match circuit 5 compares the contents of the specified time storage section 8 and the clock circuit 6, and if they match, sends an inquiry request G1 to the message management information area 4 and sends an inquiry request to the mailbox contract terminal TB. Give a calling signal sending instruction N.

Accordingly, the switching center SSC sends a paging signal O to the mailbox contract terminal TB as shown in FIG. The usage status result L is the mailbox usage status n.
is sent to the terminal TB, and the communication is terminated with a disconnection signal j and a disconnection confirmation signal k.

However, when a time designation request is made, as shown in FIG.
The contents of are compared, and if they match, an inquiry request G1 is sent to the message management information area 4, a call signal sending instruction N is given to the mailbox contract terminal TB, and a match is made with the time specification request holding circuit 9. Based on the output of the circuit 5, new time data is stored in the specified time storage section 8.

As a result, when a time specification request is made, the usage status is periodically sent to the mailbox contract terminal TB at specified time intervals.

As described above, the present invention allows the mailbox contracted terminal to register the time designation or time designation of the mailbox usage status with the network, and the network allows the mailbox contracted terminal to use the mailbox at the designated time or at time intervals. By sending the status, the mailbox contract terminal can grasp the temporally changing usage status of the mailbox, and the burden on the terminal operator due to inquiries can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a mailbox communication system showing an embodiment of the present invention, FIGS. 2 and 3 are signal sequence diagrams in normal mailbox communication,
FIG. 4 is a signal sequence diagram in a mailbox communication system showing an embodiment of the present invention. 1... Mailbox management section, 2... Message information management section, 3... Mailbox, 4... Message management information area, 5... Match circuit, 6... Clock circuit,
7... Specified time storage converter, 8... Specified time storage section, 9... Time specified request holding circuit.

Claims (1)

[Claims] 1. In the mailbox communication system, in which the memory owned by a data exchange network with a storage function is provided to subscribers as a mailbox, and the subscribers communicate with each other using the memory, the usage status of the memory lent to the subscriber. is managed by the network side, and the network notifies the memory usage status management information to the memory contract subscriber at either the time specified by the registration from the memory contract subscriber or at the specified time interval. Mailbox usage status notification method.