JPS63217727A - Radio calling method - Google Patents

Abstract

PURPOSE:To receive a call service in plural service areas while using a single receiver by setting and displaying a frequency so as to obtain a call frequency of a service area while the received frequency is switched at the reception side. CONSTITUTION:The received frequency of a receiver 21 of a reception device 17 is switched sequentially via a switching timing generator 19 and a frequency switch 18 and the call frequency via transmitters 21-2m from the station of the radio zone of the service area is received by the receiver 21, then the receiver 21 is set to the reception frequency and the setting received frequency is displayed on a display device 23. When the receiver is moved to other service area and no call frequency is received, the switching and setting of the received frequency are applied similarly and the call service in plural service areas is offered while using a single receiver.

Description

Detailed Description of the Invention "Field of Industrial Application" This invention is applied, for example, to a so-called pager system, in which a service area is composed of one or more wireless zones, and one or more wireless base stations are installed in each wireless zone. The present invention relates to a radio paging method in arranged unidirectional radio communication.

"Prior Art" In the conventional pager system, one receiver can receive service in only one service area. Therefore, in order to receive call services across multiple service areas, it is necessary to register a different receiver for each service area and to carry these multiple receivers.

SUMMARY OF THE INVENTION An object of the present invention is to provide a wireless paging method that allows paging services to be received in multiple service areas using a single receiver.

"Means for Solving the Problem" According to this invention, on the transmitting side, the
In addition, different area information for each service area is transmitted at fixed time intervals using a paging frequency.

The receiving side sequentially switches among a plurality of receiving frequencies that match the calling frequency of each service area, and sets the receiving frequency as the calling frequency in the destination service area based on the reception of the area information. Display is performed on the display according to the call signal received in this state.

In this way, the receiving side is set to a paging frequency that can be received in the destination service area, so the paging signal can be received no matter which service area the receiving side transfers to.

In particular, if you set the receiving frequency to be switched automatically in sequence, when area information is received and the receiving frequency is set as the calling frequency in that service area, when you move to another service area, the calling frequency will change automatically. is no longer received, the reception frequency is automatically sequentially switched, and the reception frequency is automatically set to the calling frequency of the service area to which the service area is to be transferred.

In addition, by displaying received area information and registering the receiver with the exchange of a predetermined service area from the receiving side, calls can be made only to the registered service area. can.

"Embodiment" Figure 1 shows an example of the relationship between the service area and the calling frequency in this invention.
Different paging frequencies r++r2+...+fN are assigned to □1□,...+IN, respectively.

In addition, each service area 1. ~IN is each composed of one or more wireless zones 11, and although not shown in the figure, a wireless base station having a transmitting device is installed in each wireless zone 11.

FIG. 2 shows an embodiment of the invention. Telephone 1 is the sending terminal
11112, a message transmitter 13 such as a personal computer is provided, and the calling party dials the subscriber number corresponding to the called party using the telephone 12, and then uses the telephone 12 or the message transmitter 13 to send the message. Send a message. These dial signals and messages are sent via the exchange 14, the radio paging device 15, and the encoder 16 to the transmitting devices 21, 2□, . . .
I am guided by □.

The radio paging device 15 converts a dial signal into a paging signal. Transmitting device 21. . . , 21 transmit information required as a calling signal to the subscriber corresponding to this dial signal, that is, the message sent from the message transmitter 13, the telephone number of the calling party, etc., to each transmitting antenna 33. . . . is sent from 31. Basically, each service area has a transmitting side exchange 14 and a radio paging device 1.
5. Encoder 16 and transmitter 2 ++..., 2. shall be provided separately. Transmitting device 23. ..., 2. is provided in each wireless zone.

Transmitting device 2. , . . . , 2.1 broadcasts area information indicating the service area at predetermined time intervals using a paging frequency predetermined in the service area. This applies to each transmitter 2 in each service area. ．． ..., 2
So send them at the same time.

On the other hand, the receiving device 17 includes a receiving frequency switch 18 for setting the receiving frequency to the paging frequency used in the service area where the called party moves. The receiving frequency switcher 18 sequentially switches the receiving frequency of the receiver 21 at a predetermined period based on the output of the switching timing generator 19, and when the above-mentioned area information is received by the receiving antenna 22, it temporarily stops the frequency switching and switches the frequency. The receiving frequency is fixed to the calling frequency in the service area, and from then on, the transmitter 13. . . , prepares for receiving a call signal from 11. In other words, the receiving device 17 captures the calling frequency using the non-locating circulation method. Since the receiving frequency of the receiver 21 is set to the calling frequency of the destination service area in this way, the transmitting devices 11+, . . . , 1. When a calling signal is sent from the receiving device 17, the display 23 of the receiving device 17 displays necessary information, that is, the telephone number and message of the sender.

When it becomes impossible to receive area information on the above reception frequency due to a transition to another service area, etc., the operation shifts to the reception frequency switching operation again, and the same operation is repeated, and the receiver changes to the calling frequency of the destination service area. 21
reception frequency is set, and it becomes possible to receive the calling signal even in this service area.

Note that the transmitting device 13. ..., 1□ and the switching period of the receiving frequency in the receiving bag W17 are determined by taking into consideration the amount of traffic, subscriber capacity, power consumption of the receiver, etc.

FIG. 3 shows an example in which the reception frequency switching in FIG. 2 is performed manually. Depending on the location of the called party, the person carrying the receiving device 17 sets the receiving frequency switch 18 to a predetermined calling frequency for each service area. In this case, the transmission of area information from the transmitter, which was required in FIG. 2, becomes unnecessary. The receiving device shown in FIG. 3 can also be used in a system that transmits area information. In Figures 2 and 3, the reception frequency switch is a PLL (Phase Locked Loop).
This can be easily achieved by using .

Since the calling party generally does not know in which service area the called party is located, all service areas 11. ...＋
A paging signal is transmitted from the IH using the paging frequency assigned to the service area by each of the plurality of transmitting devices. In this case, it is better to use it like a garment. That is, as shown in FIG. 4 with the same reference numerals assigned to parts corresponding to those in FIGS. It is stored in storage devices 4I, 4□, . . . + 4N in the service area. Storage device 4. ,..., 4N is read out according to different read timings for each service area generated by a read timing generator 24 provided in a specific station in a specific service area, and the information stored in the transmitting devices 11+...・, 1□ output from the transmitting antenna. The signal is transmitted to a plurality of transmitting devices in each service area at the same timing.

Since a receiving device similar to that shown in FIG. 2 or 3 can be used, only the transmitting side portion is shown here.

The paging signals received by the receiving device 17 are transmitted temporally shifted from each service area. The reason for this is, for example, when trying to make a call from multiple service areas at the same time, if a certain service area happens to be using all channels and cannot send a new call signal, in this example, calls are made from the empty service area first. This is because effective use of the channel can be measured by transmitting the paging signal. In other words, a kind of waiting control is carried out in a service area with heavy traffic, and therefore, the memory device 4□...148 for temporarily storing the paging signal is used in the service area 10. ...+ IN respectively.

FIG. 5 shows yet another embodiment in which the exchange 14i normally accommodates the called party's line. Furthermore, this exchange @
14i, a memory 27 for recording whether there is a response from the called party transmitted from the telephone 25 via another exchange 26 and in which service area the call was made;
A timer 28 is provided to record the time from the start of a call to the time when a response is received from the called party, and if there is no response after a preset time has elapsed since the sending of a call signal in a certain service area, a timer 28 is provided. Assuming that the called party is not in the service area, calls are sequentially made in different service areas based on instructions from the timer 28. At this time, the timer 28 is restarted from the time to start calling in the new service area.

If the exchange 14i that accommodates the caller's telephone ff112 and the exchange 26 are different, the exchange between the exchanges
It is necessary to have a function for transmitting the called party's response information. Additionally, since the accommodating exchange is generally different for each service area, when making a call in another service area, there is a separate connection between the exchange $1114i and the wireless paging device in the other service area 11゜1. Exchange 14. . , it is necessary to provide

FIG. 6 shows yet another embodiment of the invention. In this example, the receiving bag W17 sequentially switches the receiving frequency that matches the calling frequency used in each service area at a predetermined period by the output of the switching timing generator 19,
When the above area information is received by the receiving antenna 22, frequency switching is temporarily stopped, the receiving frequency is fixed to the calling frequency in that service area, and from then on, the radio base stations (transmitting device 2, . . .・, 2.) In addition to preparing for the reception of the calling signal transmitted from Remember. When area information is first received after the receiving device 17 is powered on, its contents are stored in the area code memory 31. Further, an area code indicating the service area where the subscriber currently exists is displayed on the display 23. Based on this display, the owner of the receiving device 17 can call the nearby telephone I! 25, dial a predetermined telephone number, and tell the service area (in this case, service area 144+) in which you are located to the exchange that usually accommodates the receiving device (here, it is assumed to be 14i) via the exchange 26. Notice. The exchange 14i uses this notification to identify the service area in which the subscriber is located, and when attempting to make a call from the fixed network, the exchange 14i identifies the service area 1 in which the subscriber is currently located.
A paging signal is sent via the exchange (14t+l in this case) corresponding to ill. Its service area 1
．． . A transmitting device installed in a wireless base station 2. .

..., 2. Necessary information (caller's telephone number, message, etc.) is displayed on the display 23 based on the calling signal sent from the caller. In other words, in this example, there is no need to send a paging signal to all service areas Lt...+IN.

If the area information stored in the area code memory 31 cannot be received at the above-mentioned reception frequency due to the callee's service area migration or the like, the operation shifts to the reception frequency switching operation again, and the same operation is repeated thereafter.

FIG. 7 shows a version in which the reception frequency switching in FIG. 6 is performed manually, and depending on the location of the called party,
The frequency switch 18 sets the calling frequency to a predetermined calling frequency for each service area.

"Effects of the Invention" As explained above, according to the present invention, it is possible to provide a calling service even to a single receiving device when spanning multiple service areas.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing an example of the relationship between service area, wireless zone, and calling frequency; Fig. 2 is a block diagram showing an example of the radio calling method according to the present invention; Fig. 3 is a diagram showing manual switching of the method shown in Fig. 2. FIG. 4 is a block diagram showing an example in which the transmission of the calling signal is shifted depending on the service area, FIG. 5 is a block diagram showing another example, and FIG.
The figure is a block diagram showing an example of displaying area information on a receiving device and notifying a predetermined exchange, and FIG. 7 is a block diagram showing an example of manual switching.

Claims (1)

[Claims] (1) In unidirectional wireless communication where a service area is made up of one or more wireless zones and one or more wireless base stations are placed in each wireless zone, on the transmitting side, the signal is distinguished from the paging signal, and is transmitted separately for each service area. Different area information is sent at fixed time intervals using paging frequencies, and the receiving side sequentially switches between multiple reception frequencies that match the paging frequencies of each of the above service areas, and based on the reception of the above area information, calls are made in the destination service area. A wireless paging method that sets the receiving frequency and displays the display on the display according to the paging signal received under that condition.