JPH04216220A - Radio call system - Google Patents

Abstract

PURPOSE:To announce the presence of an unreceived message to the owner of a pager although a call from a call request person already has come. CONSTITUTION:At a radio call change 3, a serial number application processing part 4 is provided to apply serial numbers to messages. A storage part 8 of a pager 7 stores the serial numbers of messages transmitted from the serial number processing part 4. A control part 9 compares a serial number N of the message already received and stored in the storage part 8 with the serial number of the message received this time. When the number of the message received this time is N+1, normality is displayed at a display part 10 and when it is not N+1, abnormality is displayed.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio paging system, and more particularly to a radio paging system having a function of assigning serial numbers to transmitted messages.

0002

2. Description of the Related Art Conventionally, a wireless calling system that provides numeric display and character display services to a pager is configured to send only a message accepted from a caller and display it on the corresponding pager.

0003

[Problem to be Solved by the Invention] As mentioned above, in the conventional radio paging system, the radio paging exchange only sends out messages accepted from the caller, so the pager may not be able to receive the message due to radio wave propagation conditions, etc. The disadvantage is that the owner of the pager cannot confirm that there are unreceived messages.

SUMMARY OF THE INVENTION An object of the present invention is to provide a wireless paging system that can notify a pager owner that there is a message that has not been received even though the pager has already been called by a call requester.

[0005]

[Means for Solving the Problems] The wireless calling system of the present invention is a wireless calling system in which a wireless calling exchange receives a calling number from a call requester, calls a pager via a wireless line, and displays a message on the pager. The wireless call exchange includes means for assigning a call serial number corresponding to the pager to a message to be sent to the pager, and the pager receives the message to which the call serial number is assigned and sends a message to the message sent to the pager to send the message to the pager. The configuration includes means for comparing the calling serial number N and identifying and displaying whether it is N+1 or not.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained with reference to the drawings. FIG. 1 is a block diagram showing one embodiment of the present invention. Figure 1
, a call requester 1 who calls a pager 7 is connected to a wireless call exchange 3 via a public telephone network 2,
A radio calling exchange 3 having a serial number addition processing section 4 is connected to a transmitting base station 6 via a regional control device 5. The pager 7 includes a storage section 8 that stores the serial number of the message sent from the serial number processing section 4, and a control section 9 that compares the serial number N that has already been received and stored with the serial number of the currently received message and instructs to display it. , and a display section 10 that displays the comparison results.

FIG. 2 is a flowchart showing the flow of serial number addition processing according to an embodiment of the present invention. First, the serial number addition processing unit 4 of the radio call exchange 3 reads subscriber data corresponding to the pager 7 (step 11).
, reads out the call serial number assigned to the message already sent to the pager 7 stored therein (step 12). Next, "1" is added to this serial number and assigned as a serial number to the beginning of the message to be sent this time (step 13). Then, the subscriber data corresponding to the pager 7 is recorded and updated to this new serial number (step 14), and the process ends.

FIG. 3 is a flowchart showing the flow of serial number identification processing in the pager 7 according to an embodiment of the present invention. First, the pager 7 receives a message containing a serial number from the transmitting base station 6 (step 21). Next, the control unit 9 reads the latest serial number N that has already been received from the storage unit 8 (step 22), and compares whether the serial number received in step 21 is "N+1" or not (step 23). As a result, if it is identified as "N+1", it is determined to be normal, the display section 10 displays the normal state (step 24), and the serial number in the storage section 8 is updated (step 26). In cases other than "N+1",
An abnormality display is displayed indicating that there is a message that has not been received due to some kind of failure (step 25).

Note that by calculating the difference between N and the serial number of the currently received message in step 23, it is also possible to display the number of unreceived messages when displaying an abnormality.

0010

As explained above, the present invention provides a radio paging system that provides a number reception and character display service to a pager, in which a radio paging exchange adds a serial number to a message sent to a pager, and the pager receives the serial number. is configured to compare the serial number of the latest message that has already been received and identify whether the numbers are consecutive or not, so that the pager owner can receive a message even though the pager has already been called by the call requester. ,
This has the effect of being able to notify that there are unreceived messages.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing an embodiment of the present invention.

FIG. 2 is a flowchart showing the flow of serial number addition processing according to an embodiment of the present invention.

FIG. 3 is a flowchart showing the flow of serial number identification processing in a pager according to an embodiment of the present invention.

[Explanation of symbols]

1 Call requester 2 Public telephone network 3 Wireless call switch 4 Serial number addition processing section 5 Regional control device 6 Transmission base station 7 Pager 8. Storage section 9 Control section 10 Display section

Claims (1)

[Claims] 1. A wireless paging system in which a wireless paging exchange receives a calling number from a call requester, calls a pager via a wireless line, and displays a message on the pager, wherein the wireless paging exchange receives a message to be sent to the pager. means for assigning a call serial number corresponding to this pager, wherein the pager receives a message to which the call serial number is assigned and compares it with the latest call serial number N which has already been received and stored and determines whether it is N+1 or not. A wireless calling system characterized by comprising means for identifying and displaying.