JPH02222223A - State management system for portable radio telephone set - Google Patents

Abstract

PURPOSE:To reduce an invalid call and to improve the effective operating factor of a system by informing and registering the information of a power supply of a portable telephone set side to a radio system controller via a stationary radio station. CONSTITUTION:A power voltage supervisory and controlling section MON of the power supply section of a portable telephone set informs the state of the power supply voltage to a control section CON when a power voltage V1 is lower than a standard voltage V2. The control section CON obtains the signal and idle channel information from a receiver R to set a transmitter T, which sends a radio wave and the information turning off the power supply of the relevant portable telephone set is superimposed on the radio wave and the resulting wave is sent to a nearby stationary radio station. The stationary radio station and the radio system controller store in their own memory devices that the relevant portable telephone set is interrupted. Thus, no recalling is required to the portable telephone set power supply is interrupted and the increase in the invalid traffic of the system is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Technical field to which the invention pertains The present invention is directed to small zone type mobile communication, in which usage status information of a mobile phone is notified to a wireless line control device every time a power switch is opened and closed. The present invention relates to a system that constantly manages the situation and provides more advanced location information provision services and call services.

(2) Conventional technology and its problems Generally, when performing mobile communication within a wide service area, one wireless base station covers the entire area and provides service.
The method for communicating with mobile objects within an area is called the large zone method. In contrast, the small zone method
The area is divided into multiple small areas, one wireless base station is installed in each divided area, and mobile wireless devices in each area communicate with these wireless base stations. be.

The conventional small zone method, for example, is currently in commercial service.
It is used in TT's car phone system. Its operation is as follows.

First, as a method for processing incoming calls to mobile devices that move anywhere within a service area, a method is used in which calls are made all at once only in areas where mobile devices are known in advance.

Location registration is performed by notifying the mobile telephone exchange of the location of the mobile device. A signal regarding location information for location registration is sent to the incoming call control channel on which the mobile station is waiting, and this signal is made different for each paging area. A mobile device registers its location by automatically transmitting a location registration signal when it detects a change in a location information signal.

The next time the mobile station makes a call, it uses the outgoing control channel available in the control zone where the mobile station is located. In this case, since the number of the outgoing control channel is always broadcast on the incoming control channel, the mobile device memorizes this number and uses the channel with an empty indication. As mentioned above, on the base station side, radio waves from the mobile device are received by multiple wireless base stations, and as a result, the wireless zone where the mobile device is located is identified, and an empty communication channel that can be used in that wireless zone is specified. This allows you to make a call.

Explain about incoming calls. The mobile station is waiting on the incoming call control channel. When the mobile station moves to another control zone, it is necessary to switch to the incoming control channel used in the disconnected control zone. Therefore, when the reception level of the incoming control channel falls below the required value, the mobile device has a function that selects and captures the channel that is received at the required level or higher from among the multiple channels allocated for incoming call control. identifies the control zone.

Therefore, when a mobile phone receives a call from the fixed telephone network, the mobile telephone exchange can make a simultaneous call from all wireless base stations within the control zone (or zones) in which the location is registered. mobile base stations will be called.

The above is an overview of the system in use.

Now, if such a system is operating normally, there is no particular problem, but if the mobile device goes out of the service area or if the power switch of the mobile device is turned off, for example, incoming calls In this case, an incoming call response signal is not returned from the mobile device. If the mobile telephone exchange that attempts to connect the incoming call does not receive an incoming call response signal from the mobile device after a certain period of time, it will notify the caller that the called mobile device is outside the service area or has been turned off. A recorded audio broadcast informs you that the connection is not possible due to either the This allows the caller to know that the connection cannot be made.

If the caller knows that the power has been turned off, he or she will not call again, but if the caller happens to be in a place where the radio wave propagation characteristics are not good, such as in a tunnel or behind a building, the caller will not make the call again. If the user is traveling and it is determined that the connection will be unavailable for a short period of time, the user usually attempts to call again after a while.

When you call again, if your mobile device happens to have moved from a place with poor signal coverage to a place with good signal coverage, it will be connected.

However, it goes without saying that if the power switch is turned off, no matter how many times you call, you will not be able to connect. If the caller had turned off the power switch of the mobile device, the caller would at this point hear the same recorded guidance as before, but at the car telephone exchange, no matter how many times the mobile phone switch is turned off, the caller will not know if the mobile device is out of the service area or if the power switch is turned off. It is not known whether the call has been disconnected or not, so the caller will try to make the call again, hoping for a connection.

For this reason, each time a caller performs a calling operation, the caller's wired switching network, mobile telephone exchange, wireless base station, and wireless incoming control channel are monopolized, increasing the amount of ineffective traffic on the same system.

(3) Purpose of the Invention In order to overcome these drawbacks, the present invention notifies and registers power information on the mobile phone side to a wireless system control device via a fixed wireless station, and prevents the mobile phone from leaving the service area. By making it possible to determine whether a connection cannot be made due to the power being turned off or because the power switch has been turned off, the system provides accurate information to callers, reduces invalid calls, and improves system operation. The purpose of this project is to realize a mobile phone status management method that improves the rate of use and enables the provision of information suitable for new services such as the provision of location information of the user.

(4) Structure and operation of the invention The present invention will be explained in detail below with reference to the drawings.

Figure 1 shows an embodiment of the present invention. The system of the present invention consists of a wireless control device, a fixed wireless station, and a mobile phone, and realizes a service that allows calls from anywhere within the service area, at any time, to anywhere. It is something to do.

Each component used in the configuration of the present invention shown in FIG. 1 will be explained below.

(i) The mobile phone has a function of accessing a wireless system control device via a fixed wireless station and automatically registering the location. In addition, when it becomes necessary to register a location with another fixed wireless station as a person walks, it has the function of accessing the wireless system control device and changing the location registration using the same operation as described above. Call operations can be made or received from any location within the service area. In addition, if it becomes necessary to change the fixed wireless station communicating with the opposite person (zone switching) due to walking during a call, it is not possible with conventional systems or may have negative effects such as temporarily disconnecting the call information. However, according to the present invention, a method that does not have these adverse effects is possible.

FIG. 2 shows the hardware configuration of the mobile phone.

(iii) The downlink signal from the fixed wireless station wireless system controller (from the wireless system controller to the mobile phone) is converted into a radio modulated wave and transmitted to the mobile phone.On the other hand, the uplink signal from the mobile phone (from the mobile phone to the wireless Direction of system control device) Receives and demodulates the wireless signal and transmits it to the wireless system control device by wire.Also, if necessary, it sends out a notification signal wirelessly to the mobile phone side to notify the existence of a fixed wireless station.

Figure 3 shows the hardware configuration of the fixed wireless station.

(i) Wireless system control device The wireless system control device connects the fixed wireless station that covers the radio wave zone where the mobile phone is located and the PBX extension of the switching device that has a one-to-one correspondence with the mobile phone at the time of outgoing/receiving calls. This is a device that forms a communication path. The wireless system control device is P
It consists of a CM switch communication path and is controlled and connected by a microprocessor.

Below, first, an outline of a normal system in which a radio system control device, a fixed radio station, and a mobile phone are operated in an integrated manner will be explained.

The wireless system control device links the location registration from the mobile phone and the fixed wireless station that notified it, and stores it in the storage unit MEM.
Remember it. When there is an incoming call from the PBX extension of the switching equipment, the wireless system control device transmits an incoming call signal to all fixed wireless stations under its control, including the ID of the called mobile phone.

The fixed wireless station that receives this information uses its own memory circuit (RAM).
), and if the ID of the called mobile phone is selected as a result, the mobile phone is called from the own fixed wireless station, and the communication path between the PBX extension of the switching device and the fixed wireless station is connected.

In the case of a call from a mobile phone, the call is received via a fixed wireless station, and the call is made to the extension of the PBX exchange that corresponds to the mobile phone. When a call termination notification is received from the fixed wireless station that connects the telephone line between the extension of the exchange PBX and the fixed wireless station, the telephone line is disconnected.

From the above, it has been found that the system shown in FIG. 1 operates as a mobile phone in the same manner as the car phone example shown in the conventional example. The operation of the present invention will be described below with reference to the drawings.

In terms of structure, the power supply section of conventional mobile phones has been simple as shown within the dotted line in FIG. The power supply circuit of the present invention
As shown in the figure. Figure 5 shows the charging terminal T indicated by the arrow on the right, the reverse current prevention diode D, the battery E, and the main power switch SI.
, standard voltage light emitting diode ZD, power supply voltage monitoring control unit MON, automatic switch S! Consists of.

The operation will be explained with reference to FIG. In FIG. 5, when the power switch S1 of the main unit is manually turned on (Y in (11)), the power supply voltage (■) is taken into the power supply voltage monitoring and control unit MON.The power supply voltage monitoring and control unit MON receives this voltage (2), Compare this with the standard voltage ■, and find out that it is higher than this and has changed to the positive side compared to before this change occurred ((1
2) plus).

The power supply voltage monitoring control unit MON sends out a signal to turn on the automatic switch St. When the automatic switch S2 is turned on by this signal ((13a)), power is supplied to the receiver R1 transmitter T and control unit CON of the main body of the mobile phone. Almost at the same time, the power supply voltage monitoring control section MON sends a signal to the control section CON of the main body ((14a)). Control obtains the same signal and information on available channels from receiver R, turns on transmitter T, and sends out radio waves. Subsequently, this radio wave carries information indicating that the power of the mobile phone has been turned on, and is transmitted from the antenna ANT to a nearby fixed wireless station. The fixed wireless station that receives this sends a reception response to the mobile phone and notifies the wireless system control device via a wired line. The fixed wireless station and the wireless system control device record the fact that the mobile phone has become "connectable" in its own storage device.

Contrary to the above, a case will be explained in which the power switch S1 on the main body of the mobile phone is manually turned off. The input voltage V of the power supply voltage monitoring control unit MON in FIG. 5 is the standard voltage V,
The power supply voltage monitoring control unit MON notifies the control unit CON of this situation.The control unit CON receives this signal and the received mR. Obtains information on available channels from , turns on transmitter T, and sends out radio waves ((13b)
). Subsequently, this radio wave carries information that the mobile phone has been turned off and transmits it to a nearby fixed wireless station.

The fixed wireless station that receives this sends a reception response to the mobile phone and notifies the wireless system control device via a wired line. The fixed wireless station and the wireless system control device record in their own storage devices the fact that the mobile phone has been disconnected. The power supply voltage monitoring control unit MON sends a signal to the control unit CON, and after a slight delay, sends a signal to the automatic switch S, and then sends a signal to the receiver R1.
Transmitter T.

The power supply to the control unit COH is stopped ((14b)).

In addition, the power supply voltage may drop during use, and the battery voltage may rise due to charging. This situation is shown in FIG. 7. In this case as well, the GL source status of the mobile phone is notified to the nearby fixed radio.

Power status information may be sent from the mobile phone to the fixed wireless station during a call, or radio waves may be sent out for this purpose. There are various types of transmission paths for this purpose, such as a communication channel and a control channel, but either of them will cause no problem in achieving the present invention.

As explained above, the power status of the mobile phone is stored in the storage unit of the fixed information wireless station and wireless system control device.
This information facilitates the following services:

■For one thing, when receiving a call, it was not possible to tell whether the mobile phone was outside the service area or turned off, so the caller could only receive a single message (No. 8 (see diagram). Conventionally, the message was sent to the caller at part A in FIG.

The present invention goes to the next step in FIG. 8, and now it is possible to provide different guidance (voice guidance or signal tone) depending on the state of the mobile phone.

■Another service is the mobile location information service, and since the location of the mobile phone is registered in the wireless system control device in this system, it can be easily registered from the maintenance operation console of the wireless system control device shown in Figure 4. You can know the situation. Regarding the registration status, it is now possible to distinguish between whether a mobile phone is out of service or turned off.

(5) As described in detail, according to the present invention, the fixed wireless station and the wireless control device can store the power information of the mobile phone in their respective storage units using a simple circuit and a simple procedure. services are possible.

One of these is a service for callers, which provides detailed information on the status of their mobile phones.

This prevents the caller from re-calling a cell phone that has been turned off, which prevents an increase in invalid traffic on the system, thereby increasing the number of cell phones that the system can accommodate. be able to.

Another service is mobile location information service, which can provide the same fine-grained services as above.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an example of a mobile phone system for implementing the present invention, FIG. 2 is a block diagram showing an example of a mobile phone used in the present invention, and FIG. 3 is a block diagram showing an example of a mobile phone system used in the present invention. A block diagram showing an example of a station, Figure 4 shows a wireless system control device (within the dotted line) and a fixed wireless station,
Fig. 5 is a connection diagram showing an example of the configuration of the power supply section of a mobile phone used in the present invention; Fig. 6 is a diagram showing the connection state of the maintenance console and the main power supply; A flowchart showing the operation up to transmission to the station, FIG. 7 is a schematic diagram showing changes in the state of the battery used in the power supply section of FIG. 5, and FIG. 8 is a diagram showing the mobile phone housed in the wireless connection device in the present invention. 3 is a flowchart illustrating an example of an operation when transmitting the power status of a device to a calling party. Patent applicant Iwasaki Tsushinki Co., Ltd.

Claims (1)

[Scope of Claims] A plurality of fixed wireless stations arranged to cover a plurality of small zones constituting a service area, and located so as to be able to communicate with the fixed wireless stations within the service area. identification information of at least one mobile phone and at least one fixed wireless station that is arranged to connect the plurality of fixed wireless stations and a general telephone network and that can communicate well with the mobile phone and the mobile phone; It registers in the information management table, sets and releases a communication path between the one fixed wireless station and the mobile phone, and changes the identification information of the communicable fixed wireless station to the state as the mobile phone moves. A mobile communication system comprising: a wireless system control device for updating and registering in a management table and making and receiving calls to the mobile phone via the registered fixed wireless station; Each time the power supply voltage passes a preset value due to opening/closing of a power switch or battery consumption or replacement, a predetermined power status notification status is notified to the fixed wireless station, and the status is received. The fixed wireless station updates the identification information of the mobile phone registered in the status management table as necessary and notifies the wireless system control device, and the wireless system control device updates the identification information of the mobile phone registered in the status management table. A mobile phone information management control system characterized in that the identification information of a mobile phone is updated as necessary.