JPH05300083A - Mobile communication system, mobile radio equipment and stationary radio equipment controller - Google Patents

Abstract

PURPOSE:To prevent erroneous information from being left in the mobile communication system even when a mobile radio equipment moves at the outside of a communication enable range or the communication is spontaneously disabled. CONSTITUTION:When a signal level from any stationary radio equipment to a mobile radio equipment 3 is decreased and the communication is disabled, the mobile radio equipment 3 sends a communication disable signal to an exchange 1 through the stationary radio equipment. The exchange 1 sends a communication state inquiry signal to the mobile radio equipment 3 after a time T1. When the mobile radio equipment 3 moves to the outside of the communication enable range and the exchange 1 does not receive a communication enable signal even after lapse of a time T2, the position information of the mobile radio equipment 3 is cancelled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication system for registering and managing position information of each mobile radio and setting a radio line between the mobile radio and the fixed radio, a mobile radio and a fixed radio control. Regarding the department.

[0002]

2. Description of the Related Art In recent years, there has been an increasing demand for mobile communication services such as mobile phones and system cordless offices.
2. Description of the Related Art Conventionally, there is a communication system in which a plurality of fixed wireless devices are arranged and communication is performed by a mobile wireless device that moves between wireless zones formed by the fixed wireless devices.

FIG. 6 is a block diagram showing the configuration of a conventional mobile communication system. In this type of mobile communication system, the mobile wireless device 63 has the existing wireless zone 64a.
To communicate through a particular fixed radio 62a within. Therefore, a location registration procedure for registering in which wireless zone of the fixed wireless device the mobile wireless device is located is defined. That is, the mobile wireless device 63 moves to each fixed wireless device 62a,
The signal state with respect to 62b is checked, and a signal for requesting location registration is transmitted to the fixed wireless device 62a forming the wireless zone 64a in which the mobile wireless device 63 exists. This position registration request signal is notified to the exchange 61 via the fixed wireless device 62a and registered in the position information management unit 67 as position information. When the mobile wireless device 63 moves to a different wireless zone, the mobile wireless device 63 checks the signal state and newly registers the position. As a result, the position information of the exchange 61 is updated to the correct position information.

By the way, when the mobile radio moves and is out of the radio zones of all the fixed radios, the exchange 61 is left with the registration of the position information relating to the mobile radio. Further, when the mobile wireless device is powered off, the position information of the exchange 61 becomes useless because communication cannot be actually performed. In such a case, when the incoming call to the mobile wireless device occurs, the exchange 61 makes a call to the mobile wireless device because the registration remains, but the mobile wireless device does not respond to call the mobile wireless device. It can be seen that the machine is not within communication range. At this time, the exchange 61 deletes the registration of the wireless device.

It is also possible to delete the registration by the following method. In other words, the fixed radio periodically makes inquiries to the mobile radios in the wireless zone,
By confirming the response from the mobile radio, it can be seen that it does not exist. The exchange 61 can feed this back and update it to correct position information.

[0006]

However, according to the conventional mobile communication system, when the mobile radio moves out of the radio zone of all the fixed radios or the power of the mobile radio is cut off. In such a case, although the mobile wireless device cannot communicate, the position information registered in the fixed wireless device remains as erroneous position information.

Further, even if the fixed wireless device periodically makes an inquiry to the mobile wireless device to check whether the mobile wireless device is in the wireless zone, the load of the fixed wireless device increases and the fixed wireless device and the mobile wireless device increase. There is a problem that the communication traffic between them increases. As a result, if incorrect location information remains in the fixed radio, it causes a drop in service that an incoming call occurs according to the incorrect location information,
Further, in a service that uses only the position information of the mobile wireless device, the accuracy of the service content will be impaired due to incorrect position information.

In view of the above problems, the present invention provides a mobile communication system and a mobile communication system in which erroneous position information does not remain even when the mobile radio moves out of the communicable range or spontaneously becomes unable to communicate. An object is to provide a radio and a fixed radio control unit.

[0009]

According to a first aspect of the invention, a plurality of mobile wireless devices, a plurality of fixed wireless devices, and each fixed wireless device are connected by a wired line, and position registration transmitted from the mobile wireless device is performed. In a mobile communication system that consists of a fixed radio controller that registers and manages which fixed radio's wireless zone each mobile radio is in by a request signal, and sets up a radio line between the mobile radio and the fixed radio. If it is a mobile wireless device and the communication status determination unit determines that communication with the fixed wireless device should not be possible, and if the communication status determination unit determines that communication is not possible, location registration is performed. And a communication failure notification unit that transmits a signal notifying communication to the fixed wireless machine.

According to the second aspect of the present invention, the communication state judging section cannot communicate when the disconnection signal of the power disconnection switch of the mobile radio is detected or when the power supply voltage falls below a predetermined level. The configuration may be such that it is determined that According to the invention of claim 3, the communication state determination unit,
The configuration may be such that when the signal state of the fixed wireless device falls below a predetermined level, it is determined that communication is impossible.

According to the fourth aspect of the present invention, a plurality of mobile radios, a plurality of fixed radios, and each fixed radio are connected to each other by a wired line. A line controller in a mobile communication system that consists of a fixed radio controller that registers and manages which radio zone the mobile radio is in, and sets the radio line between the mobile radio and the fixed radio. Therefore, when a signal for notifying communication is received from the mobile wireless device, a position registration deleting unit for canceling the position information of the mobile wireless device is provided.

The invention of claim 5 is the invention of claim 1 or 2 or 3.
The mobile radio device described above and the fixed radio device control device according to claim 4 are included. According to a sixth aspect of the present invention, a plurality of mobile wireless devices, a plurality of fixed wireless devices, each fixed wireless device are connected to each fixed wireless device by a wired line, and each mobile wireless device is controlled by a position registration request signal transmitted from the mobile wireless device. A fixed radio controller in a mobile communication system, which comprises a fixed radio controller for registering and managing whether or not it is in the radio zone of the fixed radio of After receiving a signal notifying that communication is impossible from the mobile wireless device, an inquiry unit that sends an inquiry signal to the mobile wireless device asking whether the communication status is available, and a response is sent within a predetermined time after sending the inquiry signal. If not, a location registration erasing unit for erasing the location information of the mobile wireless device is provided.

According to the invention of claim 7, when the mobile radio further receives from the fixed station an inquiry signal asking whether the communication state is possible or not, it responds with a communication disable signal or a communication enable signal according to the communication state. A communication status response unit may be provided. The invention according to claim 8 comprises the fixed radio control device according to claim 6 and the mobile radio according to claim 7.

[0014]

In the invention of the mobile wireless device according to claims 1, 2, and 3, the communication state determination unit determines that the mobile wireless device should be unable to communicate with all the fixed wireless devices. The communication disable notification unit sends a signal notifying the communication disable to the fixed wireless device that has registered the location when the communication status determiner determines that the communication is disabled.

According to another aspect of the invention of the fixed wireless device control unit, the position deletion unit deletes the position registration of the mobile wireless device when a signal for notifying communication is received from the mobile wireless device. A fifth aspect of the present invention is a mobile communication system including the mobile wireless device and a fixed wireless device control unit.

In the fixed wireless device control unit of the invention of claim 6, when the inquiry unit receives a signal notifying that communication is impossible from the mobile wireless device, the inquiry unit makes an inquiry to the mobile wireless device after a predetermined time has elapsed. The position deletion unit cancels the position registration if there is no response to the inquiry. Claim 7
In the invention of the mobile wireless device, the communication status response unit responds to the communication enable signal or the communication disable signal according to the communication status of the mobile wireless device when receiving the inquiry signal from the position registration unit.

The invention of claim 8 is a mobile communication system comprising the fixed radio controller of claim 6 and the mobile radio of claim 7.

[0018]

Embodiments of the present invention will be described in detail below with reference to the drawings. (Embodiment 1) FIG. 1 is a block diagram of a mobile communication system in Embodiment 1 of the present invention. Reference numeral 1 denotes an exchange (fixed radio control unit) which sets a line to the mobile radio 3 through the fixed radio 2a or the fixed radio 2b and which mobile radio 3 exists in a radio zone of any fixed radio. It manages the location information.

Fixed radios 2a and 2b control a radio line for the mobile radio 3 to exchange signals with the exchange 1. Reference numeral 3 denotes a mobile wireless device, which determines which wireless zone it is in by checking the signal state with the fixed wireless station, and sends a signal to the exchange 1 through the fixed wireless device for the existing wireless zone. Exchange.

Fixed radios 2a and 4a and 4b, respectively.
It is a wireless zone corresponding to 2b. Actually, other than these, various components are required to realize the function of controlling the call connection, the function of controlling the user interface, and the like, but they are omitted because they are not the main object of the present invention. Figure 2
FIG. 2 is a block diagram of the mobile wireless device 3 of FIG. 1.

A communication control unit 5 controls a wireless line for exchanging signals with a fixed wireless device. 6
Is a location registration request unit that checks the signal status of the fixed radio station (signal level, identification code of the fixed radio, etc.), and if it is in a communicable state, the fixed radio in the radio zone in which the mobile radio exists is Identification is performed from the identification code, and a location registration request signal is transmitted.

Reference numeral 7 denotes a communication state determination unit, which monitors the power state of the mobile wireless device 3, such as the power off button and the voltage level, and determines that communication is not possible when the power is cut off. 8
Is a communication disable notification unit, and sends a communication disable signal when the communication status determination unit 7 determines that communication is disabled. Figure 3
2 is a block diagram of the exchange 1 of FIG. 1. FIG.

A line control unit 9 controls the line to the mobile wireless device 3 through the fixed wireless device and also controls the exchange of control signals such as position registration. A position information management unit 10 manages position information indicating which fixed wireless device the mobile wireless device 3 is in in the wireless zone. A position registration unit 11 receives the position registration request signal and registers the position information for the contents in the position information management unit 10.

Reference numeral 12 denotes a position registration deleting unit, which receives a communication disable signal and cancels the position information regarding the contents thereof from the position information managing unit 10. The operation of the mobile communication system configured as described above will be described. Assuming that the mobile wireless device 3 exists in the wireless zone 4a, the location registration requesting unit 6 (FIG. 2) determines that the wireless wireless device 4 is in the wireless zone 4a by checking the signal state (signal level, identification code, etc.) with the fixed wireless station. It is determined that there is a position registration request signal, and the communication control unit 5 causes the fixed wireless device 2a to transmit the signal. This position registration request signal is received by the exchange 1 (FIG. 1) via the fixed wireless station 2a, and is notified to the position registration unit 11 via the line control unit 9 in the exchange 1 (FIG. 3). The position registration unit 11 registers in the position information management unit 10 that the mobile wireless device 3 is in the wireless zone 4a by the notified position registration request signal.

In this state, in the mobile wireless device 3 (FIG. 2), the user performs a key input to turn off the power, or the voltage level is lowered, and the operation to turn off the power of the mobile wireless device 3 is performed. Suppose As a result, the mobile wireless device 3 performs the following processing before actually turning off the power. That is, the communication state determination unit 7 in the mobile wireless device 3 determines that the communication is disabled due to the power off, and notifies the communication disabled notification unit 8 to that effect. The communication disable notification unit 8 transmits a communication disable signal to the fixed wireless device 2 a via the communication control unit 5. Mobile radio 3
Sends this signal and then actually turns off the power.

This communication disable signal is received by the exchange 1 (FIG. 1) via the fixed wireless station 2a, and is notified to the location registration deleting unit 12 via the line control unit 9 in the exchange 1 (FIG. 3). .. The position registration deleting unit 12 deletes the information that the mobile wireless device 3 registered in the position information managing unit 10 exists in the wireless zone 4a according to the content of the notified communication disable signal, and the mobile wireless device 3 Register as absent. After this, even if the mobile wireless device 3 moves out of the wireless zone 4a, erroneous position information does not remain.

In this way, the communication status judging unit 7 monitors the power status of the mobile radio 3 to judge whether communication is possible,
If the communication is impossible, the communication failure notification unit 8 transmits a communication failure signal. In response to this, the exchange 1 deletes the location registration 1
2 cancels the location information. As a result, erroneous position information does not remain even if the mobile wireless device 3 moves out of the wireless zone after communication is disabled.

In the first embodiment described above, the mobile wireless device is in a state in which the power supply should be turned off as a condition in which communication cannot be performed, but it is also possible to use a voluntary stop of the position registration process. In the first embodiment, the position information is always canceled by turning off the power of the mobile wireless device, but it is also possible to specify whether to cancel the position information.

Next, a mobile communication system according to the second embodiment of the present invention will be described. The block diagram of the entire mobile communication system is the same as that of FIG. 1 in the first embodiment, but the internal configurations of the mobile wireless device 3 and the exchange 1 are different. FIG. 4 is a block diagram showing the configuration of the mobile wireless device 3 of FIG. A communication control unit 13 controls a wireless line for exchanging signals with a fixed wireless device.

Reference numeral 14 is a location registration processing unit, which determines that the mobile radio 3 is present in any of the radio zones, transmits a location registration request signal, and transmits a communication status inquiry signal described later. Upon receipt, it requests the communication status determination unit 15 to transmit the communication status. A communication state determination unit 15 monitors the signal state with the fixed wireless station, and the signal level with any fixed wireless device falls below a certain set value and the mobile wireless device 3 receives any wireless zone. When it is separated from the wireless zone, it is determined that communication is not possible immediately before leaving the wireless zone, and when a request for transmission of the communication state is received from the position registration processing unit 14, communication is enabled or disabled depending on the signal level at that time. ..

Reference numeral 16 denotes a communication status notifying section which transmits a communication disable signal when the communication status determining section 15 determines that communication is impossible, and enables communication when the communication status determining section 15 determines that communication is possible. Send a signal. FIG. 5 is a block diagram showing the configuration of the exchange 1. A line control unit 17 controls a line to the mobile wireless device 3 through a fixed wireless device and also controls exchange of control signals such as position registration.

A position information management unit 18 manages position information indicating which fixed wireless device the mobile wireless device 3 is in in the wireless zone. A position registration unit 19 receives the position registration request and registers the position information for the contents in the position information management unit 18. Reference numeral 20 denotes a location registration erasing unit, which cancels the location information from the location information management unit 18 when the mobile wireless device receives the communication disable signal and does not respond to the location inquiry with respect to the content.

Reference numeral 21 denotes a position inquiry unit, which transmits a communication state inquiry signal to a designated mobile radio device after a predetermined T1 time has passed since the position registration deletion unit 20 was requested to make a position inquiry. The location registration erasing unit 20 is notified of whether or not the communication enable signal or the communication disable signal is returned within a predetermined T2 time. The operation of the communication system configured as above will be described.

If the mobile wireless device 3 (FIG. 1) exists in the wireless zone 4a, the location registration processing unit 14 in the mobile wireless device 3 (FIG. 4) checks the signal state with the fixed wireless device. Thus, it is determined that the user is in the wireless zone 4a, and the position registration request signal is transmitted to the fixed wireless device 2a via the communication control unit 13. This location registration request signal is sent to the exchange 1 (Fig. 1).
And is notified to the location registration unit 19 via the line control unit 17 in the exchange 1 (FIG. 5). The position registration unit 19
According to the content of the notified position registration request signal, the position information management unit 18 confirms that the mobile wireless device 3 is in the wireless zone 4a.
Register with.

In this state, it is assumed that the mobile wireless device 3 (FIG. 1) moves in a direction away from the wireless zone 4a, and that direction is not within the wireless zone 4b. The communication state determination unit 15 in the mobile wireless device 3 (FIG. 4) uses the fixed wireless device 2
The signal state with a is checked, and if the signal level of any fixed radio falls below a predetermined level, it is determined that communication is disabled, and this is notified to the communication state notification unit 16 before leaving the wireless zone 4a. .. In response to this notification, the communication status notification unit 16 transmits a communication disable signal to the fixed wireless device 2a via the communication control unit 13.

This communication disable signal is received by the exchange 1 (FIG. 1) via the fixed radio station 2a, and is notified to the location registration deleting unit 20 via the line control unit 17 in the exchange 1 (FIG. 5). .. The position registration deleting unit 20 notifies the position inquiry unit 21 to make a position inquiry to the mobile wireless device 3 in accordance with the content of the notified communication disable signal. The position inquiry unit 21 transmits a communication state inquiry signal to the mobile wireless device 3 via the line control unit 17 after T1.

At this time, the mobile radio 3 is moved to the radio zone 4
Suppose that you have moved outside of a and b. The mobile radio 3
The communication status inquiry signal cannot be received, and the communication enable signal cannot be transmitted as a response to the inquiry signal. When the position inquiry unit 21 does not receive the communication enable signal T2 hours after the inquiry signal is transmitted, the position inquiry unit 21 notifies the position registration deletion unit 20 that there is no response to the position inquiry. The position registration deleting unit 20 deletes the information that the mobile wireless device 3 registered in the position information managing unit 18 exists in the wireless zone 4a, and the mobile wireless device 3
Registers as absent.

In addition, the mobile wireless device 3 has wireless zones 4a, 4
Suppose that it has not moved out of b. The communication status inquiry signal is received by the mobile wireless device 3, and is notified to the location registration processing unit 14 via the communication processing unit 13 in the mobile wireless device 3. When the location registration processing unit 14 receives the communication state inquiry signal, the communication state determination unit 15 determines that communication is possible based on the signal level at that time, and notifies the communication state notification unit 16 of the communication state. The communication status notification unit 16 transmits a communication enable signal via the communication control unit. This communication enable signal is sent to the fixed radio 2
a, The position inquiry unit 21 is notified via the line control unit 17 in the exchange 1. When the position inquiry unit 21 receives the communication enable signal, the position inquiry unit 21 notifies the position registration deletion unit 20 that a response has been received. The position registration deleting unit 20 does not cancel the position information in this case.

As described above, in the mobile wireless device 3, the communication state determination unit 15 monitors the signal levels of the mobile wireless device 3 and the fixed wireless device to determine whether communication is possible. The status notification unit 16 transmits a communication disable signal. On the other hand, in the exchange 1 on the fixed radio side, the position registration erasing unit 20 receives the communication disable signal, the position inquiry unit 21 makes an inquiry to the mobile radio 3 after T1 time, and a response is received even after T2 time. If not, the location information is canceled.
Here, the T1 and T2 times are provided with appropriate values as the time that can actually move in order to confirm whether or not the mobile wireless device has moved. Specifically, the value is determined in consideration of the wireless output and the size of the wireless zone. For example, in a wireless zone having a radius of about 50 meters, both T1 and T2 are preferably about 2 to 3 seconds. Let's do it.

As described above, erroneous position information does not remain even when the mobile wireless device 3 moves out of all wireless zones. Also, if you move out of the wireless zone but return to the wireless zone before you leave the zone, the location information will not be deleted, and the location information will be incorrect even if the signal level temporarily drops. Will not be deleted.

[0041]

As described above, according to the present invention, when the mobile radio moves out of the wireless zone of all the fixed radios, the power of the mobile radio is cut off, or the power supply voltage is reduced. When the mobile wireless device becomes incommunicable due to a drop in the level, the location registration erasing unit erases the location information registered in the exchange, so accurate location information can be secured without leaving as erroneous location information. effective.

Further, since the position inquiry unit is provided for inquiring about the communication state after receiving the signal notifying that the communication is impossible, the communication is temporarily performed even when the signal level from the fixed radio determines whether the communication is impossible. In addition, there is an effect that correct position information can be secured without canceling the position information even if the signal level is lowered. As a result, since incorrect location information does not remain in the fixed wireless device, it is possible to prevent a decline in service in which an incoming call is generated according to incorrect location information, and for services that use only the location information of the mobile wireless device, the service content The effect is that accuracy is not impaired.

[Brief description of drawings]

FIG. 1 is a block diagram of a mobile communication system according to a first embodiment of the present invention.

FIG. 2 is a block diagram of a mobile wireless device according to the first embodiment of the present invention.

FIG. 3 is a block diagram of an exchange according to the first embodiment of the present invention.

FIG. 4 is a block diagram of a mobile wireless device according to a second embodiment of the present invention.

FIG. 5 is a block diagram of an exchange according to a second embodiment of the present invention.

FIG. 6 is a block diagram of a mobile communication system in the related art.

[Explanation of symbols]

 1 Switch 2a Fixed Radio 2b Fixed Radio 3 Mobile Radio 4a Wireless Zone Configured by Fixed Radio 2a 4b Wireless Zone Configured by Fixed Radio 2b 5 Communication Control Unit 6 Position Registration Request Unit 7 Communication Status Judgment Unit 8 Communication Improper notification unit 9 Line control unit 10 Position information management unit 11 Location registration unit 12 Location registration deletion unit 13 Communication control unit 14 Location registration processing unit 15 Communication status determination unit 16 Communication status notification unit 17 Line control unit 18 Position information management unit 19 Location registration section 20 Location registration deletion section 21 Location inquiry section

Claims (8)

[Claims] 1. A plurality of mobile wireless devices, a plurality of fixed wireless devices, and each fixed wireless device are connected to each other by a wired line, and each mobile wireless device determines which one of the fixed wireless devices is fixed by a position registration request signal transmitted from the mobile wireless device. A mobile radio in a mobile communication system that consists of a fixed radio controller that registers and manages whether or not you are in the radio zone of the radio, and is a mobile radio in a mobile communication system that sets up a radio line between the mobile radio and the fixed radio. Between the communication status determination unit that determines that communication should not be possible, and a signal that notifies the fixed wireless device that was registering the location that communication is disabled when the communication status determination unit determines that communication is impossible. A mobile wireless device comprising: a communication disable notification unit for transmitting a message. 2. The communication state determination unit detects, when a disconnection signal of a power supply disconnection switch of a mobile radio device is detected, or when the power supply voltage falls below a predetermined level,
2. It is determined that communication becomes impossible, and
Mobile radio as described. 3. The mobile wireless device according to claim 1, wherein the communication status determination unit determines that communication is disabled when the signal status of the fixed wireless device falls below a predetermined level. 4. A plurality of mobile wireless devices, a plurality of fixed wireless devices, and a fixed wireless device connected to each fixed wireless device by a wire line, wherein each mobile wireless device is fixed by a position registration request signal transmitted from the mobile wireless device. A line control device in a mobile communication system that consists of a fixed radio device control device that registers and manages whether or not you are in the radio zone of the radio device, and is a line control device in a mobile communication system that sets up a radio line between the mobile radio device and the fixed radio device. A fixed wireless device control device comprising a position registration deleting unit for canceling the position information of the mobile wireless device when a signal notifying that communication is impossible is received. 5. A mobile communication system comprising the mobile wireless device according to claim 1, 2 or 3, and the fixed wireless device control device according to claim 4. 6. A plurality of mobile wireless devices, a plurality of fixed wireless devices, and a fixed line connected to each fixed wireless device. Each mobile wireless device is fixed by a position registration request signal transmitted from the mobile wireless device. A fixed radio controller in a mobile communication system, which comprises a fixed radio controller for registering and managing whether or not it is in the radio zone of the radio, and is a fixed radio controller in a mobile communication system for setting a radio line between the mobile radio and the fixed radio. After receiving a signal notifying that communication is impossible from the device, if there is no response within a predetermined time after sending the inquiry signal to the mobile wireless device A fixed wireless device control device comprising a position registration deleting unit for canceling the position information of the mobile wireless device. 7. The mobile wireless device further includes a communication status response unit that responds to a communication disable signal or a communication enable signal according to the communication status when receiving an inquiry signal asking whether the communication status is available from the fixed station. The mobile radio device according to claim 1, 2 or 3, wherein. 8. A mobile communication system comprising the fixed radio equipment control device according to claim 6 and the mobile radio equipment according to claim 7.