JPH07221685A - Control station, mobile station and mobile radio communication equipment composed of both stations - Google Patents

Abstract

PURPOSE:To improve the communication efficiency in a mobile radio communication equipment. CONSTITUTION:A table 16 holding the discrimination information on a mobile station which exists within the communication area of the station in use is provided on a control station 1. Calls are successively performed for the mobile stations 2 corresponding to all the discimination information held in the table 16. In the case of no response to the calls, the mobile stations are deleted from the table 16. A discimination information return command is transmitted to the mobile station 2 which exists with the communication area and does not perform the call. When the discimination information included in the call from the control station 1 matches with the discimination information of the station in use, the mobile station 2 responds to the control station 1, responds to the discimination information return command and returns the discimination information of the station in use. The control station 1 registers the returned discrimination information in the table 16. Thus, when the mobile station 2 is in a state that communication can be not performed, a notification can be quickly performed for the station communicating and requesting the effect and communication service is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication device, and more particularly to a mobile communication device such as a car telephone.

[0002]

2. Description of the Related Art Conventionally, as this type of mobile communication device,
There is one described in Japanese Patent Laid-Open No. 3-34632. This is for transmitting and receiving between a base station (control station) and a mobile station, and for transmitting and receiving by calling a mobile station existing in the communication area of the base station.

In this conventional device, the same publication, page 3, upper left stage 1
As described in lines 2 to 5 on the lower left of the same table, the identification information of the mobile station that has not responded as a result of calling from the base station is stored in the base station, and the mobile station that can respond is stored. Is only communicated to. That is, the base station receives the identification information from the mobile station and, when the received identification information matches the identification information of the unresponsive mobile station, calls the mobile station to perform communication.

[0004]

In the above-mentioned conventional mobile communication device, when it is necessary to call a certain mobile station,
Since it is unknown whether or not the mobile station can communicate, it is necessary to call the mobile station for the time being. Therefore, it is necessary to call each time even when the mobile station is out of the communication area and cannot communicate, and it is slow to notify the station requesting communication that the mobile station cannot communicate. was there.

The present invention has been made in order to solve the above-mentioned drawbacks of the prior art, and its purpose is to constantly grasp the communicable state of each mobile station, and to that effect when the mobile station is in a state in which communication is impossible. Is to provide a mobile communication device including a control station and a mobile station capable of promptly notifying a station that has requested communication.

[0006]

The control station according to the present invention comprises:
A table for holding identification information of mobile stations existing within the communication area of the own station, and a mobile station corresponding to all identification information held in this table for sequentially calling the first station
And a second transmitting means for transmitting an identification information return command to a mobile station existing in the area and not called.

The mobile station according to the present invention includes an identification information return means for returning the identification information of the own station in response to an identification information return command from the control station when it has entered the communication area of the control station,
And a response unit that responds to the control station when the identification information included in the call from the control station matches the identification information of the own station.

The mobile communication device according to the present invention is provided with a table holding the identification information of the mobile stations existing in the communication area of the own station and a mobile station corresponding to all the identification information held in this table. And a mobile station existing in the area and not called after the call to the mobile station corresponding to all the identification information held in the table is completed. A control station including second transmission means for transmitting an identification information return command to the control station;
When the identification information included in the call from the control station matches the identification information of the own station, the response means responds to the control station, and the identification information of the own station in response to the identification information return command. And N (N is a positive integer) mobile stations including identification information returning means for returning.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of a mobile communication device according to the present invention, in which (a) is a control station,
(B) shows a mobile station. In FIG. 1A, the control station 1 receives the information from the mobile station via an antenna (not shown), the identification information detection unit 12 that detects the identification information from the reception result, and the detection unit 12. A registration unit 13 that registers identification information in the table 16 and deletes the identification information registered in the table 16, a CPU 14 that refers to the table 16 and performs polling, and the CPU 1.
4 is included in the transmission unit 15 for transmitting the output of No. 4 from an antenna (not shown). Note that the table 16 is registered with the identification information of the mobile stations currently existing in the communication area.

On the other hand, in FIG. 1B, the mobile station 2 has a receiving section 21 for receiving information from the control station via an antenna (not shown), and an identification information detecting section 22 for detecting identification information from the reception result. A three-state buffer 23 that transmits the reception result in the enabled state in response to the detection of the identification information, and the CPU 2 that performs a predetermined process according to the reception result.
4 and a transmitter 25 for transmitting the output of the CPU 24 from an antenna (not shown).

Next, the information transmitted from the above control station and mobile station will be described with reference to the drawings. Figure 2 (a)
[Fig. 3] is a conceptual diagram showing a configuration example of information transmitted from a control station, and (b) is a conceptual diagram showing a configuration example of information transmitted from a mobile station.

In FIG. 1A, the information transmitted from the control station at each polling is SOH (Start Of H).
Eating) and ETB (End of Transm)
isson Block), and identification information (ID) is inserted between them. This identification information is sequentially added with all the items registered in the table in the control station, that is, the identification information of the mobile station currently moving in the communication area.

On the other hand, the information transmitted from the mobile station in response to the polling from the control station in FIG. 2B has SOH and ETB as in the case of FIG. Information and text are inserted. This identification information is information for the mobile station to identify itself, and is assumed to be fixedly set in advance for each mobile station.

The operation of the control station and mobile station configured as shown in FIG. 1 will be described. FIG. 3 is a flowchart showing the operation of the control station.

First, the CPU 14 reads each item of the table 16 (step 31). Then, polling is performed with reference to the read contents (step 32). That is, all the identification information registered in the table 16 is referred to, the identification information is added, and polling is performed.

If there is a reply from the mobile station, the contents are received and a predetermined process is performed (steps 33 → 34). on the other hand,
If there is no reply, the identification information is deleted from the table 16 (step 33 → 35).

The above processing is performed for all identification information registered in the table 16, that is, for all mobile stations currently moving within the communication area (step 36 → 32).

When the polling for all the identification information is completed, an intrusion confirmation process into the communication area is performed (steps 36 → 37). In this intrusion confirmation process, the identification information portion shown in FIG. 2A is set to an impossible value (for example, all “0” or all “1”) or transmitted as a blank (no information). To do.

As a result, if there is a reply from the new intruding station, the identification information of that station is registered in the table (steps 38 → 39), and the above process is repeated (step 39 →).
31 → ...). On the other hand, if there is no reply, the process is repeated as it is (step 38 → 31 → ...).

Next, FIG. 4 is a flow chart showing the operation of the mobile station.

First, the receiver 21 receives the information transmitted from the control station (step 41). Next, it is determined whether the identification information added to the received information matches the identification information of the own station (step 42).

If they match, it can be determined that the polling is for the local station, so the 3-state buffer 23
Is enabled, and transmission is performed if necessary (steps 42 → 43). After the transmission is completed, the transmission completed flag indicating that the transmission is completed is set to the ON state (step 44). After this setting, the information transmitted from the control station is received again (steps 44 → 41).

If they do not match, the 3-state buffer 23
It is determined whether or not it is the intrusion confirmation processing this time while keeping the state of being disabled (steps 42 → 45). In this case, the identification information part has an impossible value or is blank, so that it can be easily determined. If it is not the intrusion confirmation process, it can be determined that the polling is for another station, and the information transmitted from the control station is received again (step 45 → 41).

If it is the intrusion confirmation processing, it is judged whether or not the transmitted flag is in the ON state (step 45 → 46).
If it is not in the ON state, transmission is performed with the identification information of the own station added (steps 46 → 47). If it is on, the transmitted flag is set to off (step 48). After this setting, the information transmitted from the control station is received again (step 48 → 41).

With the above configuration, the processing as shown in FIG. 5 can be performed. That is, the mobile station 2 within the communication area 4 of the control station 1 can be polled. Further, the identification information about the station 3 leaving the area 4 can be deleted from the table, and conversely, the identification information about the station 5 entering the area 4 can be registered in the table.

Next, the above processing will be described with reference to a time chart.

FIG. 6 is a time chart showing the operations of the control station and the mobile station when the identification information portion in the intrusion confirmation processing is transmitted as an impossible value. As shown in the figure, the control station refers to the table and sequentially calls all mobile stations, that is, polls (POL) 6. In this case, N mobile stations TA1 to TAN are sequentially called.

When the mobile station leaves the communication area and does not respond to the polling, the control station deletes the identification information concerning the mobile station from the table. Further, in the intrusion confirmation processing 71, since the identification information portion has a value that cannot exist, the newly intruding station adds the identification information of its own station to the control station and transmits 72.

After the intrusion confirmation processing 71, polling (POL) 6 is performed again.

FIG. 7 is a time chart showing the operations of the control station and the mobile station when the identification information portion in the intrusion confirmation processing is transmitted as blank (empty).
As shown in the figure, the control station refers to the table and sequentially calls all mobile stations, that is, polling (PO).
L) 6. In this case, N mobile stations TA1 to TAN are sequentially called.

When the mobile station leaves the communication area and does not respond to the polling, the control station deletes the identification information concerning the mobile station from the table. Further, in the intrusion confirmation processing 81, since the identification information part is blank, the newly intruding station adds the identification information of its own station to the control station and transmits 82.

After the intrusion confirmation processing 81, polling (POL) 6 is performed again.

As described above, since the mobile station currently in the area of the own station is registered in the table, when the control station requests a communication from the certain station to the mobile station,
If the mobile station can communicate, communication can be started, and if the mobile station cannot communicate, the communication request source station can be immediately notified that communication is impossible.

[0035]

As described above, according to the present invention, the control station is provided with a table, and the mobile stations currently in the area of the own station are registered in this table, whereby the communication can be performed without calling. There is an effect that the mobile station can be grasped and the communication efficiency can be improved. In particular, when the mobile station is in a state in which communication is not possible, it is possible to promptly notify that effect to the station requesting communication, which has the effect of improving the communication service.

[Brief description of drawings]

1A is a block diagram showing a configuration of a control station in a mobile communication device according to an embodiment of the present invention, and FIG. 1B is a block diagram showing a configuration of a mobile station in a mobile communication device according to an embodiment of the present invention. is there.

2A is a conceptual diagram showing a configuration example of information transmitted from the control station of FIG. 1A, and FIG. 2B is a configuration example of information transmitted from the mobile station of FIG. 1B. It is a conceptual diagram shown.

FIG. 3 is a flowchart showing an operation in the control station of FIG.

FIG. 4 is a flowchart showing an operation in the mobile station of FIG. 1 (b).

FIG. 5 is a diagram showing a relationship between a communication area of a control station and a mobile station.

FIG. 6 is a time chart showing an example of a communication processing operation between a control station and a mobile station.

FIG. 7 is a time chart showing another example of the communication processing operation between the control station and the mobile station.

[Explanation of symbols]

 1 control station 2 mobile station 4 communication area 12, 22 identification information detection unit 13 registration unit 16 table

Claims (11)

[Claims] 1. A table for holding identification information of mobile stations existing in the communication area of the own station, and a step of sequentially calling mobile stations corresponding to all identification information held in this table. 1 transmitting means and existing in the area,
And a second transmitting means for transmitting an identification information return command to the mobile station that did not make a call. 2. The control station according to claim 1, wherein the call by the first transmitting means is made by polling. 3. The control station according to claim 1, further comprising means for deleting from the table the identification information of the mobile station that made the call if there is no response to the call. 4. The identification information return command is information having the same configuration as each of the calls, and the identification information part has a special value, according to any one of claims 1 to 3. Control station. 5. The control station according to claim 1, further comprising means for registering the identification information returned from the mobile station in the table in response to the identification information return command. . 6. An identification information return means for returning the identification information of its own station in response to an identification information return command from the control station when it has entered the communication area of the control station, and is included in the call from the control station. A mobile station, comprising: a response unit that responds to the control station when the identification information that is present matches the identification information of its own station. 7. A table holding identification information of mobile stations existing within the communication area of the own station, and a step of sequentially calling mobile stations corresponding to all identification information held in this table. 1 transmitting means and existing in the area,
And a control station including second transmission means for transmitting an identification information return command to a mobile station that has not called, and the identification information included in the call from the control station is the identification information of the own station. N movements (N is a positive integer) including response means for responding to the control station when they match and identification information return means for returning the identification information of the own station in response to the identification information return command A mobile communication device comprising: a station. 8. The mobile communication device according to claim 7, wherein the call by the first transmitting means is made by polling. 9. The mobile station according to claim 7, further comprising means for deleting the identification information of the mobile station that made the call from the table if there is no response to the call, in the control station. Communication device. 10. The identification information return command is information having the same configuration as each of the calls, and the identification information part has a special value, according to any one of claims 7 to 9. Mobile communication device. 11. The control station is further provided with means for registering the identification information returned from the mobile station in the table in response to the identification information return command.
10. The mobile communication device according to any one of 10 to 10.