JPH07147609A - Method and system for mobile equipment call back - Google Patents

Abstract

PURPOSE:To realize automatic call back after the end of use when a radio base station (FB) is used by another mobile equipment at a mobile object communication network where the FB is shared by respective mobile equipments. CONSTITUTION:When an originated call from a general telephone set 5 to a mobile equipment 3A is terminated in the state of using a FB 2 for a mobile equipment 3B, a car telephone exchange 1 registers the telephone number of the caller and call back register information on a memory 8. When the FB 2 is turned to an idle state and an idle signal is generated, this signal is detected by an idle signal detecting means 14, and call back due to a CPU 7 is started by a call back starting means 17. Therefore, when the FB 2 is used for the other mobile equipment 3B, after the end of use, automatic call back is enabled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile device call back method and system in a mobile communication network.

[0002]

2. Description of the Related Art For example, Japanese Laid-Open Patent Publication No. 3-235563 discloses a mobile device call back method applicable to a mobile communication network. FIG. 4 shows a system configuration according to a method obtained by modifying the method disclosed in this publication.

In the system shown in this figure, a car telephone 3 is connected to a car telephone exchange 1 via a radio base station (FB) 2. A general telephone 5 is further connected to the car telephone exchange 1 via a telephone network 4.
The telephone number of the automobile telephone 3 is represented by DN2, and the telephone number of the ordinary telephone 5 is represented by DN4. The car telephone exchange 1 includes a network 6, a CPU 7 for controlling the network 6, a memory 8, a car telephone trunk (MB).
T) 9, signal tone generator (TNS) 10, PB receiver (P
BR) 11 and automatic answer trunk (ART) 12.

When a caller calls a mobile telephone 3 from a general telephone 5, the caller first receives the mobile telephone 3.
Dial the telephone number DN2 of. At this time, it is assumed that the mobile phone 3 is in the communicable area (area) and the FB 2 is not occupied by another mobile phone. In this case, in response to an incoming call from the general telephone 5, the automobile telephone exchange 1 connects the called automobile telephone 3 to the ordinary telephone 5.

On the contrary, it is assumed that the mobile phone 3 is in the incommunicable area (out of service area) when the mobile phone 5 calls the mobile phone 3. In this case, the car phone 3 cannot respond. Then, the ART 12 of the automobile telephone exchange 1 responds. This response is, for example, a message that "I cannot make a call right now. I will inform you as soon as it is available. Please dial your telephone number from the area code". This is realized as an operation of sending to the other side.

The caller who hears this message dials his telephone number DN4 from the telephone set 5. The car telephone exchange 1 receives the telephone number DN4 by the PBR 11. In response to this reception, the CPU 7 stores (registers) the subscriber data of the mobile phone 3 in the memory 8. This subscriber data contains the received telephone number DN
4. Includes call back registration information for requesting registration of the call back service for the mobile phone 3. At the same time as this registration, the CPU 7 causes the telephone 5 to send a call back service registration completion sound via the FB 2.

After this, the mobile phone 3 returns to the area where communication is possible. The car telephone 3 sends the position registration request information to the car telephone exchange 1 via the FB 2. The car telephone exchange 1 receives this via the FB2 by the MBT9. Upon receiving the position registration request information, the CPU 7 of the car telephone exchange 1 knows that the car telephone 3 is in the communication area. The CPU 7 transfers the position registration request information to the memory 8 in order to register the fact. CPU7
Refers to the subscriber data of the mobile phone 3 on the memory 8. From this, the CPU 7 knows that the call back service is registered and the telephone number DN4 of the registration source. The automobile telephone exchange 1 executes a call to the automobile telephone 3 and also calls the ordinary telephone 5 by sending out the telephone number DN4. The car telephone exchange 1 is a car telephone 3
When either the general telephone 5 or the general telephone 5 responds, the ART
12 sends a message. That is, ART1
2 sends a message to the one of the mobile telephone 3 and the general telephone 5 that answers first, for example, "I will perform a call back service. Please wait until the other party comes out." After this, when the remaining telephones of the car telephone 3 and the ordinary telephone 5 respond, the ordinary telephone 5 is connected by the network 6.
And the mobile phone 3 are connected, and a call is established.

[0008] Such a service is called a call back service. That is, in the conventional system, when the mobile phone 3 is in the incommunicable area (out of service area), when the mobile phone 3 returns to the service area, the mobile phone 3 is called without calling from the general telephone 5. I was able to return it.

[0009]

However, even in a system implementing such a call back service, when the radio base station is occupied by a mobile device other than the called mobile device (car phone). In this case, the caller needs to perform a re-call operation. That is, when the radio base station is being used by another mobile device, the mobile device originating the call cannot answer the call.

The present invention has been made in order to solve the above-mentioned problems, and the radio base station is occupied by another mobile station, and therefore, even if a new communication request is generated, the mobile station is subject to this. It is an object of the present invention to enable automatic call back even after a call is made in a state in which no response can be made after the use of the radio base station by the other mobile device.

[0011]

In order to achieve such an object, the mobile station call back method of the present invention is such that when a radio base station is occupied by a mobile station, it is issued to another mobile station. When a call from a caller arrives, the step of registering information for identifying the caller and the callee, the step of detecting that the radio base station is empty, and the state of the radio base station being empty And the step of returning the caller and calling the callee based on the registered information. Here, the occupied state means a state in which the wireless base station is occupied by any of a plurality of mobile devices and the wireless base station cannot be used by another mobile device. The empty state means a state in which the wireless base station can be used by any mobile device.

Further, the mobile communication system of the present invention is used jointly by a mobile communication network for receiving a call from a caller, a plurality of mobile units used while moving, and a plurality of mobile units. A radio base station that connects a mobile station, which is called by a caller, to a mobile communication network among a plurality of mobile stations, and a radio base station that is issued to another mobile station when the mobile station is occupied by the mobile station When a call from a caller arrives, call back registration means for registering information identifying the caller and the callee, and an empty state detection means for detecting that the wireless base station is in an empty state, When the wireless base station is in an empty state, there is provided call return calling means for returning the caller and calling the call destination based on the registered information.

The present invention is further characterized in that the empty state detecting means detects that the wireless base station is in an empty state based on an empty signal transmitted from the wireless base station when the empty state is present. And

The present invention is characterized in that the call return registration means, the empty state detection means, and the call return call means are provided in the mobile communication network.

[0015]

According to the present invention, when a call from a caller to another mobile station arrives at the mobile communication network while the radio base station is occupied by the mobile station, the caller and the caller are called. Information specifying the destination is registered. When the occupied state is canceled at a certain point, it is detected that the wireless base station is empty. When the wireless base station becomes empty, the calling party is called back based on the registered information and the called party is called. Therefore, in the present invention,
In response to the occurrence of the empty state, the caller's automatic call back and the callee's automatic call are executed.

The detection of the empty state can be realized by sending and receiving an empty signal. That is, if an empty signal is transmitted from the wireless base station when the empty state is reached, the empty signal can be received and the empty state can be detected. Further, the registration of information identifying the caller and the callee, the detection of an empty state, the return of the caller's call and the call of the callee can be performed in the mobile communication network. Of course, a device having these functions may be provided outside the mobile communication network.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. It should be noted that the same or corresponding configurations as those of the conventional example shown in FIG.

FIG. 1 conceptually shows the principle configuration of the present invention. The system shown in this figure comprises a mobile communication network 1, a radio base station 2, and a plurality of mobile units 3A, ... 3B. The mobile communication network 1 is a communication network realized as, for example, an automobile telephone exchange, and a call from a caller 5 such as a general telephone arrives at the mobile communication network 1.
The mobile units 3A, ... 3B are used while moving. The radio base station 2 is shared by these mobile units 3A, ... 3B. The radio base station 2 includes a plurality of mobile devices 3A, ...
The mobile device called by the caller 5 of B is connected to the mobile communication network 1.

This system further has an automatic call back function which is activated when the radio base station 2 is occupied. That is, when the radio base station 2 is occupied by any mobile device (for example, 3B), another mobile device (for example, 3A) cannot use the radio base station 2 (occupied state). In this state, when a call from the caller 5 to the other mobile device arrives, in the present invention, automatic call back is performed after the occupied state is resolved. This function is realized by the call back registration unit 13, the empty state detection unit 14, and the call back call unit 15.

When a radio base station 2 is occupied by a mobile station (eg 3B) and a call from a caller 5 to another mobile station (eg 3A) arrives at the mobile communication network 1. Information for specifying the caller 5 and the call destination 3A is registered in the call back registration means 13. After this, when the wireless base station 2 becomes empty, that is, when the mobile station 3A becomes usable, this is detected by the empty state detecting means 14
Detected by. Then, the call return call means 15 returns the caller 5 based on the registered information,
At the same time, the call destination 3A is called.

In this figure, the call back registration means 1
3, the empty state detecting means 14 and the call back calling means 15 are shown inside the mobile communication network 1, but these means may be provided outside the mobile communication network 1.

FIG. 2 shows the configuration of a system according to an embodiment of the present invention. Further, FIG. 3 shows a series of procedures for call back in this embodiment. Members corresponding to those of the conventional example shown in FIG. 4 are designated by the same reference numerals. However, this does not mean that members with the same reference numerals have the same functions.

The system shown in FIG. 2 is a system related to an automobile telephone and has an automobile telephone exchange 1. The car telephone exchange 1 includes a plurality of mobile units 3A, ... 3B.
Is connected to a radio base station (FB) 2 used by The car telephone exchange 1 is connected to a general telephone 5 via a telephone network 4. The telephone number of the automobile telephone 3A is represented by DN2, and the telephone number of the ordinary telephone 5 is DN.
It is represented by 4.

The car telephone exchange 1 includes a network 6,
CPU 7 for controlling the network 6, memory 8, MBT
9, TNS10, PBR11, and ART12. The call back registration means 13 shown in FIG. 1 is realized by the memory 8. The empty state detecting means 14 is built in the MBT 9 and detects the empty state of the FB2 based on the empty signal transmitted from the FB2. The FB2 has a built-in empty signal sending means 16 for sending an empty signal. The call back calling means 15 is realized by the CPU 7, and is started by the call back starting means 17 in response to a command from the empty state detecting means 14.

Next, the operation of this embodiment will be described.

As shown in FIG. 3, the mobile device 3B is FB
It is assumed that a call is made from the general telephone 5 to the mobile telephone 3A within the range of the FB2 while using 2 ("calling signal" in the figure). In this case, the called mobile phone 3
ART 12 responds because A cannot respond. For example, the message "The call is busy right now. We will inform you as soon as it is available. Please dial your phone number from the area code".
It is sent to the telephone 5 by the RT 12 ("B in the figure"
T ").

It is assumed that the calling party responds to this message, instructs the call return registration from the general telephone 5 and dials his / her telephone number DN4 ("call return registration + D" in the figure).
N4]). The PBR 11 of the car telephone exchange 1 receives the telephone number DN4. The CPU 7 receives the telephone number D
Call back registration information requesting registration of the call back service for N4 and the mobile phone 3A is stored in the memory 8 as subscriber data of the mobile phone 3A. With this,
The CPU 7 causes the TNS 10 to send a call-back registration completion sound to the general telephone 5 (“call-back registration completion sound” in the figure).

When the mobile terminal 3B ends the call and becomes ready for communication ("end call" in the figure), the empty signal sending means 16 of the FB2 sends an empty signal to the car telephone exchange 1 (in the drawing). "Sky signal"). This empty signal is detected by the empty state detecting means 14. In response to this detection, the call back activation means 15 notifies the CPU 7 that the call return should be activated. The CPU 7 of the car telephone exchange 1 is the car telephone 3
The fact that A can talk is transferred to the memory 8 and
The subscriber data of the mobile phone 3A on the memory 8 is referred to. As a result, the CPU 7 knows that the call back service is registered and the telephone number DN4 of the registration source. The automobile telephone exchange 1 executes a call to the automobile telephone 3A and also calls the ordinary telephone 5 with the telephone number DN4. The CPU 7 sends an ART to the person who responds first.
For example, a message is sent from 12 such as "Call back service will be provided. Please wait until the other party comes out." When the other party responds, the ordinary telephone 5 and the car telephone 3A are connected via the network 6. As a result, the call returns and the call back service is completed.

Therefore, according to the present embodiment, since the FB2 is occupied by the car phone 3B, the car phone 3
Even when the call cannot be communicated with A, a call back call is automatically made when the FB2 is no longer occupied by the mobile phone 3B and becomes empty, so that the convenience for the caller is greatly improved.

In the above description, the empty state is detected by detecting the empty signal, but this may be performed by other means. For example, F when occupied
A signal indicating that effect may be transmitted from B2, and if this signal is cut off, it may be considered as an empty state. further,
The call back registration means 13 does not need to be configured as the memory 8. That is, the registered information may be constantly or sequentially supplied to the call back and calling means 15. Further, the information necessary for the call back call may be transmitted from the automobile telephone exchange 1 to a predetermined center, and this center may have each function of the present invention.

[0031]

As described above, according to the present invention, a caller who encounters a situation where the radio base station is occupied does not repeat the call operation to the mobile station, and the radio base station is in an empty state. When this occurs, the call is automatically received and the call can be made, which greatly improves the convenience for the caller.
Further, the detection of the empty state can be realized as the detection of an empty signal.

[Brief description of drawings]

FIG. 1 is a block diagram showing a principle configuration of the present invention.

FIG. 2 is a block diagram showing a configuration of an exemplary embodiment of the present invention.

FIG. 3 is a sequence diagram of a mobile device call back in the present embodiment.

FIG. 4 is a block diagram showing a configuration of a conventional example.

[Explanation of symbols]

 1 mobile communication network (automobile telephone exchange) 2 radio base station (FB) 3A, ..., 3B mobile equipment (automobile telephone) 4 telephone network 5 caller (general telephone) 6 network 7 CPU 8 memory 9 automobile telephone trunk ( MBT) 10 signal tone generator (TNS) 11 PB receiver (PBR) 12 automatic response trunk (ART) 13 call back registration means 14 empty state detection means 15 call back call means 16 empty signal transmission means 17 call back activation means

Claims (4)

[Claims] 1. A wireless base station is occupied by any one of a plurality of mobile devices, and the wireless base station cannot be used by another mobile device. When a call arrives, a step of registering information for identifying the caller and the callee and a step of detecting that the state of the wireless base station is an empty state that can be used by any one of the mobile stations And a step of calling back the calling party and calling the called party based on the registered information when the state of the wireless base station is empty, Method. 2. A mobile communication network for receiving a call from a caller, a plurality of mobile units used while moving, and a mobile unit among a plurality of mobile units that is called by a caller. A mobile communication system having a wireless base station connected to a mobile communication network, the wireless base station being shared by a plurality of mobile devices, wherein the wireless base station is occupied by one of the mobile devices. A call in which information specifying the caller and the callee is registered when a call from the caller arrives at the other mobile device while the wireless base station cannot be used by the other mobile device. Return registration means, empty state detection means for detecting that the state of the wireless base station is an empty state that can be used by any mobile device, and registration when the state of the wireless base station is the empty state. Call back the caller and call the callee based on the information A mobile device call back system comprising: a call back call means. 3. The mobile station call back system according to claim 2, wherein the empty state detecting means indicates that the wireless base station is in an empty state, and the empty state transmitted from the wireless base station when the empty state is in the empty state. A mobile station call back system characterized by detection based on a signal. 4. The mobile device call back system according to claim 2, wherein the call back registration unit, the idle state detection unit, and the call back call unit are provided in the mobile communication network. system.