JP3021938B2 - Mobile radio telephone system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile radio telephone system, in particular, a radio base station connected to a public telephone network or an ISDN network which is installed at home, in a business office, or outdoors, and can be used with one portable terminal. The present invention relates to a mobile radio telephone system capable of making a telephone call at home, in an office, or outdoors.

[0002]

2. Description of the Related Art In order to call a portable terminal in a mobile radio telephone system, it is necessary to manage position information indicating which calling area each portable terminal is in the network.

In a conventional wireless telephone system, for example, a car telephone system, position information indicating which calling area each mobile terminal is in is registered in a home memory station of each mobile terminal, and there is a call request to the mobile terminal. When a call is made, a call area is selected based on the position information registered in the home memory station, and a call is made via the radio base station in the call area. At this time, when the location information is not registered in the home memory station, or when there is no response even after calling for a fixed time in the calling area where the location is registered,
The caller is notified that the call cannot be made and the line is disconnected.

Accordingly, in this conventional radio telephone system, when each portable terminal detects a change in the calling area, it automatically sends a location registration request signal, and when each radio base station receives the location registration request signal, Unless the home memory station has a function of transmitting the location registration information of the portable terminal, there is a problem that efficient calling cannot be performed.

By the way, at present, a self-employed radio base station is provided in a home or a business office, and a public radio base station is provided outdoors.
A second-generation cordless telephone system that allows a user to use a home portable terminal (cordless telephone) to talk outdoors as well as at home, in a business office, and the like, is being studied.

In this second-generation cordless telephone system, it is necessary to register the location of each portable terminal. However, in this telephone system, the public wireless base station does not cover all areas, so that the public terminal is not available. In order to leave the calling area of the wireless base station and, for example, to be able to register the location even when the holder of the mobile terminal returns home, the mobile base station in the home, that is, through the base unit of the mobile terminal It is necessary to be able to register the location of the mobile terminal in the home memory station. In this case, it is necessary to provide the master unit with a data transmission function for performing location registration in the home memory station, but if such a function is provided in the master unit, the cost of the master unit is assumed to be purchased by an individual. , Which hinders the spread of next-generation cordless telephone systems.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to increase the calling probability of a portable terminal in a mobile radio telephone system.
Another object is to make it possible to call a mobile terminal without providing a location registration function in a base unit of the mobile terminal.

[0008]

The gist of the present invention is that the home memory station that manages the position information of the portable terminal stores position information indicating which calling area the portable terminal is in, and specific calling area information for calling the portable terminal. Or, when a specific wireless base station code is stored and the location information of the mobile terminal that has made the call request is not registered in the home memory station, or when there is no response even after calling for a fixed time,
Calling a mobile terminal via a corresponding radio base station based on the above call area information or the radio base station code.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a second generation cordless telephone system,
That is, it is a configuration diagram of a mobile radio telephone system using an existing communication network 1 such as a public telephone network or an ISDN network.

[0010] A plurality of telephone sets 2, wireless base stations for private use (for example, a home base unit) 3, and wireless base stations 4 for public use are respectively connected to the communication network 1. The home memory station 5 that manages the position information 6a... Is connected.

The home memory station 5 is provided with a management information storage unit for storing call management information for calling a mobile terminal, a charging information storage unit for storing charging information for the mobile terminal, and the like.

As shown in FIG. 2, the management information storage unit for storing the management data for calling includes a memory area M1 for storing the telephone number of the portable terminal, a memory area M2 for storing the ID code of the portable terminal, and a location of the portable terminal. It comprises a memory area M3 for storing the service area number, a memory area M4 for storing the telephone number of the parent device of the portable terminal, a memory area M5 for storing the number of the child device managed by the parent device.

[0013] Of the data stored in each of the above-mentioned memory areas, the telephone number of the portable terminal, the ID code of the portable terminal, the telephone number of the parent device of the portable terminal, and the management number of the child device for the parent device (child device number) Is set and stored at the time of joining the system, but the area number of the mobile terminal is registered via the public wireless base station 4 covering the area where the mobile terminal is actually located. Specifically, when the mobile terminal is turned on, the location registration key is operated, or when the mobile terminal crosses a wireless zone (calling area), the mobile terminal transmits a location registration request signal to the wireless zone. The wireless base station 4 that has transmitted to the wireless base station 4 and received the position registration request signal registers the position of the portable terminal in the home memory station 5.

Next, the processing operation of the network when there is a call request will be described with reference to the flowchart of FIG. The communication network waits for a call request from each mobile terminal in step S1 of FIG. 3, and detects whether or not there is a call request in step S2. If no call request is detected, step S1
It returns to the state of waiting for the call request.

If there is a call request in the determination in step S2, it is determined in next step S3 whether the called telephone number is registered in the home memory station 5. When the telephone number is not registered in the home memory station 5, the process proceeds to step S4, and a message to the effect that the telephone number is not currently used is transmitted to the caller. Further, step S5
To disconnect the line and return to the state of waiting for the call request in step S1.

If the telephone number has been registered in the home memory station 5 in the determination in step S3, it is determined in step S6 whether or not the position information of the portable terminal corresponding to the called telephone number has been registered in the home memory station 5. Determine.

When the location of the portable terminal is registered, the location is registered in step S7 via the radio base station in the area (area corresponding to the area number in the memory area M3 in FIG. 2). The corresponding portable terminal is called, and it is determined in step S8 whether or not there is a response to the call.

When there is a response, a line is connected between the calling terminal and the called portable terminal in step S9 to make a call possible. If there is no response in the determination in step S8, the current location registration data stored in the memory area M3 of the home memory station 5 is deleted in step S10,
In step S13, a message indicating that the call cannot be made is sent to the caller, and then the line is disconnected in step 5, and the process returns to the call request waiting state in step S1.

If it is determined in step S6 that the position of the portable terminal has not been registered, a call is made via the master unit whose telephone number is stored in the memory area M4 of the home memory station 5 in step S11.

That is, if the base unit is called with the telephone number of the base unit registered in the memory area M4 of the home memory station 5 corresponding to the telephone number of the portable terminal, and there is a response from the base unit, A line is connected to the master unit, and the slave unit number stored in the memory area M5 of the home memory station 5 is sent to the master unit. Upon receiving the slave unit number, the master unit searches the ROM in the own device for the ID code of the portable terminal corresponding to the slave unit number, and calls the corresponding portable terminal based on the ID code. Thereafter, in step S12, it is determined whether a response has been received within a predetermined time. If there is no response, the process proceeds to step S13 to send a message to the effect that the call cannot be made to the caller, and then to step S5.
To disconnect the line, but if there is a response, step S
Proceed to 9 to connect a line between the master unit and the calling terminal.

Accordingly, even if the parent device does not have the position registration function of the child device, if the child device is at home with the parent device,
You can receive a call. Note that base unit 3 is ISD
When connected to the N network, digital data can be directly transmitted to the base unit 3, so that the portable terminal can be called via the base unit 3 by the ID code of the portable terminal registered in the home memory station 5. it can.

As described above, by registering the telephone number of the base unit of the portable terminal in the home memory station 5, even when the position registration of the portable terminal is not performed, the corresponding position is maintained via the base unit. Since the mobile terminal can be called, there is no need to provide a location registration function in the parent device, and an increase in cost of the parent device can be prevented.

In the above embodiment, if there is no response from the portable terminal within a predetermined time in step S8,
After performing the position registration data erasing process in step S10,
Although the configuration is such that the message sending process of step S13 is performed, the process may proceed from step S10 to step S11 to perform the calling process via the parent device.

In this case, for example, as shown in FIG. 1, when the holder of the portable terminal 6a in the calling area of the radio base station 4 leaves the area and returns to the home where the master unit 3 is located, the position is determined. Even when the mobile terminal 6a cannot be called in the calling area according to the registration information, the calling is performed via the base unit 3, so that the calling probability is improved.

In the above embodiment, when the location of the called-side portable terminal is not registered, or when there is no response to the call in the calling area in which the location is registered, the portable terminal is connected via the master unit. Although the second generation cordless telephone system has a high possibility of commercializing a cordless telephone having an answering machine function and the like even in the second generation cordless telephone system, the main unit itself may be called instead of calling the portable terminal. . In this case, you can record the message on the parent machine or ask the replacement person for the message,
There is no need to make multiple calls for the same business.

Further, in the above embodiment, the second generation cordless telephone system has been described as an example, but the present invention can be applied to a car telephone system and the like. In this case, the home memory station may store a specific calling area number or a specific wireless base station code instead of the telephone number of the base unit.

[0027]

According to the present invention, when the location of the called portable terminal is not registered, or when the portable terminal is called in the registered calling area and there is no response, a specific The calling probability is improved because the calling is performed via the radio base station in the calling area or a specific radio base station. In particular, in the case of the second generation cordless telephone system, the calling can be performed via the base unit. Even if the device does not have the location registration function, the corresponding mobile terminal can be called.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a wireless telephone system according to an embodiment.

FIG. 2 is a configuration diagram of a management information storage unit.

FIG. 3 is a flowchart showing a processing operation of a network when a call request is made.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Communication line network 3 Base unit 4 Public wireless base station 5 Home memory station 6a Portable terminal

Claims (3)

(57) [Claims] 1. A mobile radio telephone system provided with a home memory station for managing location information of a portable terminal, wherein the home memory station has location information of each portable terminal and specific call area information or specific information of each portable terminal. An area for storing a wireless base station code is provided. When there is a call request to the mobile terminal, when the location information of the mobile terminal corresponding to the home memory station is registered, the location is determined based on the location information. Calling the portable terminal via the wireless base station in the area, and if there is no response from the portable terminal even after calling for a predetermined time via the wireless base station in the area, or corresponding to the home memory station When the location information of the mobile terminal to be accessed is not registered, the specific call area information or the wireless base station designated by the wireless base station code is used. Mobile radio telephone system which is characterized in that the relevant mobile terminal call. 2. A mobile radio telephone system comprising a public radio base station, a private radio base station capable of calling a specific mobile terminal, and a home memory station for storing location information of the mobile terminal. An area for storing the location information of each mobile terminal and a specific private wireless base station code is provided, and when there is a call request to the mobile terminal, the location information of the mobile terminal corresponding to the home memory station is registered. The mobile terminal calls the mobile terminal via the wireless base station in the corresponding area based on the location information, and the mobile terminal calls from the mobile terminal even if the mobile terminal calls through the wireless base station in the area for a predetermined time. When there is no response, or when the location information of the mobile terminal corresponding to the home memory station is not registered, the mobile station is not associated with the specific private wireless base station code. Mobile radio telephone system which is characterized in that a call of the mobile terminal in question through the private radio base station. 3. A mobile radio telephone system comprising: a public radio base station, a private radio base station capable of calling a specific mobile terminal, and a home memory station for storing location information of the mobile terminal. An area for storing the location information of each mobile terminal and a specific private wireless base station code is provided, and when there is a call request to the mobile terminal, the location information of the mobile terminal corresponding to the home memory station is registered. The mobile terminal calls the mobile terminal via the wireless base station in the corresponding area based on the location information, and the mobile terminal calls from the mobile terminal even if the mobile terminal calls through the wireless base station in the area for a predetermined time. When there is no response, or when the location information of the mobile terminal corresponding to the home memory station is not registered, the mobile station is not associated with the specific private wireless base station code. Mobile radiotelephone system characterized by calling the private radio base station.