JP2792474B2 - Switching method during communication and switching method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switching method and a switching method during communication of a communication path, and more particularly to a PHS (Personal).
The present invention relates to a communication switching method and a switching method in mobile communication such as a handy-phone system, a mobile phone, and a mobile phone.

[0002]

2. Description of the Related Art Mobile communication is characterized by being able to make and receive calls at any time and at any place. Generally, mobile terminals communicate with special functions such as terminal location registration and authentication. Is required, so that the call charge is higher than that of communication using a fixed terminal. Under such circumstances, for example, when a call is sent from a fixed terminal to a mobile terminal, the caller generates a request to switch the call path to a fixed terminal with a low call charge, and the caller moves closer to the fixed terminal from the mobile terminal. Transfer to a fixed terminal is desired. As a system for realizing this demand, there is a system for performing the following communication switching using a conference telephone system in mobile communication disclosed in Japanese Patent Application Laid-Open No. 59-169236.

In the conference telephone system in mobile communication disclosed in the above publication, a mobile network exchange is provided with signal mixing means,
Upon receiving a connection request and connection information (the telephone number of the switching destination) and line information during the call (such as the telephone number of the caller) from the mobile terminal in communication to an arbitrary third party, the line in communication is mixed. In addition to connecting to respective means, a communication path to a switching destination is newly connected, thereby enabling communication of three or more parties. In this conference telephone system, if the connection to the third party is a connection to the fixed terminal, and the line of the mobile terminal is released when the connection to the third party is completed, the connection from the mobile terminal by the receiving side described above is fixed. It is possible to switch the call to the terminal. FIG. 2 shows an example of a telephone network using this method.

In FIG. 2, the telephone network is a mobile terminal 207.
A mobile network constituted by a mobile network exchange 200 accommodating a base station 206 for controlling radio communication with the mobile station, a first fixed network constituted by a fixed network exchange 201 accommodating a line to the fixed terminal 203, and a fixed terminal And a second fixed network constituted by a fixed network switch 202 accommodating a line to the network 204. Here, the fixed terminal 103 is the calling side, and the fixed terminal 104 is the switching destination.

[0005] The mobile network exchange 200 includes a control unit 211.
And the switch unit 210, the interface units 212, 213, and 214 connected thereto, and the communication mixing unit 215.
And The interface unit 212 has the base station 206, and the interface unit 213 has the fixed network switch 2.
01, the fixed network switch 20
2 are connected respectively. These interface units 212, 213, and 214 are connected via the switch unit 210 to a communication path connecting the interface units 212 and 213, and the respective interface units 212, 213, and 214.
Communication paths for connecting the signal mixing means 215 to the
, Can be formed. The control unit 211 sends each interface unit 212, 213, 21 from each exchange.
Based on the information sent to the control unit 4, the communication unit controls the formation of a communication path in the switch unit 10.

In the above-described telephone network, when the telephone number (“identification number” + “terminal number”) of the mobile terminal 207 is transmitted from the fixed terminal 203, the fixed network switch 201 and the interface unit 213 are connected, and the control unit 211 Mobile terminal 2
The terminal number of 07 is notified.

When the terminal number of mobile terminal 207 is notified, control section 211 instructs switch section 210 to form a communication path connecting fixed terminal 203 and mobile terminal 207. When the communication path is formed by the switch unit 210, the call is received by the mobile terminal 207, and a call can be made between the two terminals.

[0008] Here, in order for the user of the mobile terminal 207 to switch the call to a fixed terminal (here, the fixed terminal 204) having a known telephone number, the connection request and the fixed terminal are transmitted from the mobile terminal 207. When the telephone number of the fixed terminal 204 is transmitted, the control unit 211 issues a fixed number to the switch unit 210 based on the line information during the call (such as the telephone number of the caller) and the transmitted telephone number of the fixed terminal 204. And a communication path for connecting the terminals 203 and 204 and the mobile terminal 207 to the signal mixing means 215, respectively.

When the communication paths are formed by the switch section 210, a call can be made between the fixed terminals 203 and 204 and the mobile terminal 207. Finally, the control unit 211 instructs the switch unit 210 to release the communication path, and when the communication path is released by the switch unit 210, the switching during the call from the mobile terminal to the fixed terminal by the receiving side is completed. I do.

[0010]

However, in the conventional mid-call switching system using the conference telephone system in the mobile communication disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 59-169236,
Switching from the mobile terminal to the fixed terminal is performed based on the line information during the call (the telephone number of the caller) and the connection information (the telephone number of the switching destination) given from the mobile terminal, so the telephone number is unknown. A fixed terminal, for example, a fixed terminal, such as a public telephone, whose user is not notified of the telephone number cannot be used as a fixed terminal to be switched to. In the conventional mid-call switching method in which the switching destination is limited to only those whose telephone numbers are known, when a call is received at the mobile terminal, even if there is a fixed telephone nearby, the telephone number is not known. If not, the call cannot be switched to the fixed terminal, which is not practical.

[0011] It is an object of the present invention to provide a call switching method and a switching method which are excellent in practicality and which can switch a call to a fixed terminal whose telephone number is not known.

[0012]

According to the present invention, there is provided a mid-call switching system, wherein first and second interface units are connected to a fixed network, and lines are formed for first and second fixed terminals. A third interface unit connected to the mobile network and forming a line with the mobile terminal, a communication return unit for connecting two different lines back to enable communication, and the first to third interface units And a switch unit for forming a communication path between the communication return unit,
Control means for controlling the formation of a communication path in the switch unit, the control means, when a telephone number of the mobile terminal is transmitted from the first fixed terminal, based on the telephone number, The switch unit forms a first communication path for connecting the first fixed terminal and the mobile terminal to enable communication between the two terminals, and a specific number from the second fixed terminal during the communication. When the telephone number of the mobile terminal is transmitted, the call switching is recognized from the specific number and the telephone number, and the first and second fixed terminals and the communication return unit are respectively connected to the switch unit. The second and third communication paths are formed to enable communication between the first and second fixed terminals, and then the first communication path is released.

[0013] In the above-mentioned mid-call switching system, storage means is further provided, and when the telephone number of the mobile terminal is transmitted from the first fixed terminal, the control means, based on the telephone number,
A switch unit forms a first communication path connecting the first fixed terminal and the mobile terminal to enable communication between the two terminals, and also sets line information relating to the communication and a telephone number of the mobile terminal. When a specific number and a telephone number of the mobile terminal are transmitted from the second fixed terminal during the call, a call switch is recognized from the specific number and the telephone number, and the storage is performed. A first connection unit that connects the first and second fixed terminals and the communication return unit to the switch unit based on the line information stored in the unit;
And a second communication path may be formed to enable communication between the first and second fixed terminals, and then the first communication path may be released.

[0014] Further, in the above-mentioned call switching system, voice transmitting means for transmitting guidance as to whether or not to perform call switching, and response receiving means for receiving an approval or non-approval response to the guidance from the mobile terminal, The control unit further includes a line information stored in the storage unit when the switch unit forms the second and third communication paths to enable a call between the first and second fixed terminals. Forming a fourth communication path connecting the voice transmitting means and the mobile terminal based on the above, causing the mobile terminal to transmit guidance, and the response from the mobile terminal to the guidance received by the response means being approved. Only in this case, the second and third communication paths may be formed.

A call switching method according to the present invention is a method for switching during a call in mobile communication in which a fixed network and a mobile network are connected to each other, wherein a first fixed terminal in the fixed network transmits a signal from the first fixed terminal in the mobile network. When the telephone number of the mobile terminal is transmitted, the first fixed terminal and the mobile terminal are connected based on the telephone number to enable a call between both terminals, and during the call, the fixed network When a specific number and the telephone number of the mobile terminal are transmitted from the second fixed terminal, the call switching is recognized based on the specific number and the telephone number, and the call switching is performed for the mobile terminal. Is transmitted, and only when the response from the mobile terminal to the guidance is approved, the first and second fixed terminals are connected to enable communication between the two terminals. Connection between the fixed terminal and the mobile terminal Release and switches the call.

[0016]

According to the conventional call switching method, call switching is performed by transmitting connection information (switching destination telephone number) from a mobile terminal, so that a fixed terminal whose telephone number is unknown (for example, a public telephone) can be used. Call switching cannot be performed.

In the switching method and method according to the present invention configured as described above, a specific number and the telephone number of the mobile terminal as the switching source are transmitted from the second fixed terminal as the switching destination. , The call can be switched without knowing the telephone number of the second fixed terminal to which the call is switched. Therefore, even a fixed terminal whose telephone number is unknown, for example, a fixed terminal such as a public telephone, can perform call switching using this as a switching destination.

According to the present invention, there is provided a method and a method wherein, when a call is switched, a guidance as to whether or not to perform the call switching is transmitted, and the call is switched only when a response from the mobile terminal to the guidance is approved. Since the call switching is confirmed to the user by voice, a better communication service can be provided.

[0019]

Next, an embodiment of the present invention will be described with reference to the drawings.

The call switching method according to the present invention employs a PHS (Pers
onal Handy-phone System), a switching method during communication in mobile communication such as a car phone and a mobile phone. For example, when a call is transmitted from a fixed terminal and received by the mobile terminal, the mobile terminal is close to the mobile terminal by the called party. This is a switching method during communication that enables call switching to a fixed terminal.

FIG. 1 is a schematic block diagram of a telephone network using a call switching system according to an embodiment of the present invention.

In FIG. 1, the telephone network is a mobile terminal 107.
A mobile network constituted by a mobile network exchange 105 accommodating a base station 106 for controlling radio communication with the mobile station, a first fixed network constituted by a fixed network exchange 101 accommodating a line for the fixed terminal 103, and a fixed terminal A second fixed network including a fixed network switch 102 accommodating a line for the network 104, and a gateway switch 100 for controlling a connection between the first and second fixed networks and a connection between the first fixed network and the mobile network. It is composed of Here, the fixed terminal 103 is the calling side, and the fixed terminal 104 is the switching destination.

The gateway exchange 100 includes a control unit 1, a storage unit 3, a PB signal reception unit 30, interface units 50, 51, 52 connected to the control unit 1, and voice transmission units 21 and 52.
2 and a communication return unit 2. Hereinafter, the configuration of each unit will be described in detail.

The interface unit 50 has a mobile network switch 105 and the interface unit 51 has a fixed network switch 10.
1. The fixed network switch 102 is connected to the interface unit 52. These interface units 5
Reference numerals 0, 51, and 52 denote a communication path connecting the interface units 50 and 51 via the switch unit 10, a communication path connecting the interface unit 52 and the voice transmitting unit 21, and connecting the interface unit 51 and the communication return unit 2 via the switch unit 10. It is possible to form a communication path, a communication path connecting the interface unit 50 and the voice transmitting unit 22, and a communication path connecting the interface unit 52 and the communication return unit 2.

The communication loopback unit 2 loops back and connects two different lines to enable communication. In this case, the loopback connection between the line on the fixed terminal 103 side and the line on the fixed terminal 104 side (communication path,). , Enabling a call between the two terminals.

The voice transmitting section 21 is connected to the line on the fixed terminal 104 side (communication path) in the process of switching the communication path described later, and notifies the fixed terminal 104 of the switching operation. In the process of switching the communication path, the voice transmitting unit 22 is connected to the line on the mobile terminal 107 side (communication path) and sends a guidance (authorization request) to the mobile terminal 107 as to whether or not to switch the call.

The PB signal receiving section 30 is a response receiving means for receiving an approval or non-approval response from the mobile terminal 107 to the above guidance.
In step S07, the control unit 1 receives the approval and non-approval by the PB signal from the control unit 07, and notifies the control unit 1 of the reception result. In the present embodiment, the PB signal receiving unit 30 is configured to use the communication path provided for the voice transmitting unit 22, but may be configured to be able to receive directly from the interface unit 50.

The control unit 1 stores the line information relating to the telephone call in the storage unit 3 and based on the stored line information and the information transmitted and received by the interface units 50, 51, 52 and the PB signal receiving unit 30. Thus, the formation of the communication path in the switch unit 10 is controlled. FIG.
The communication line is indicated by a solid line, and the control line is indicated by a broken line.

Next, a specific switching operation of the telephone network using the above-described telephone call switching method will be described.

The telephone number of the mobile terminal 107 is composed of an identification number and a terminal number.
When the telephone number 07 is transmitted, the fixed network exchange 101 establishes connection with the gateway exchange 100 based on the identification number. Then, a line is connected between the fixed network exchange 101 and the interface unit 51 of the gateway exchange 100, and the control unit 1 is notified of the terminal number of the mobile terminal 107.

When the terminal number of the mobile terminal 107 is notified, the control unit 1
Along with instructing to form a communication path connecting the mobile terminal 107 and the mobile terminal 107, the storage unit 3 stores the terminal number of the mobile terminal 107 and the line numbers of the fixed terminal 103 and the mobile terminal 107. When the communication path is formed by the switch unit 10, the call is received by the mobile terminal 107, and a call can be made between the two terminals.

Here, the user of the mobile terminal 107 communicates the call with a nearby fixed terminal (here, the fixed terminal 104).
When the fixed terminal 104 transmits a special number indicating a call switching request and the identification number and terminal number of the mobile terminal 107 from the fixed terminal 104, the fixed network switch 102 transmits the gateway switch based on the identification number of the transmitted numbers. 100 is connected to the line. Fixed network switch 102 and gateway switch 10
0 is connected to the interface unit 51, the control unit 1
The special number and the terminal number of the mobile terminal 107 are notified.

When the special number and the terminal number of the mobile terminal 107 are notified, the control unit 1 recognizes that the transmission is a switching request from the special number, and stores the communication line number of the mobile terminal 107 in the storage unit 3. Inquiry and receive notification of the line number.
Upon receiving the notification of the line number, subsequently, based on the line number, a communication path connecting the fixed terminal 104 and the voice transmission unit 21, a communication path connecting the fixed terminal 103 and the communication return unit 2, a mobile terminal 107, voice transmission unit 22, and PB
A communication path for connecting to the signal receiving unit 30 is formed, and the switch unit 10 is instructed to release the already formed communication path.

At the time of the switching operation, the voice transmitting unit 21
Provides guidance to the fixed terminal 104 that the call is being switched, and the voice transmission unit 22 provides guidance to the mobile terminal 107 whether to approve the call switching.

Approval or non-approval of the above guidance from the mobile terminal 107 is received by the PB signal receiving unit 3 by the PB signal.
When transmitted to 0, the PB signal receiving unit 30 notifies the control unit 1 of the result. Here, if the notified result is approved, the control unit 1 forms a communication path for connecting the fixed terminal 104 and the communication loopback unit 2, and switches to release the already formed communication path. Part 1
Instruct 0. As a result, the fixed terminal 103 and the fixed terminal 104 can communicate with each other via the communication loopback unit 2, and the switching from the mobile terminal 107 to the fixed terminal 104 is completed. If the notified result is non-approval, the control unit 1 instructs the switch unit 10 to form a communication channel again and release the already formed communication channel. As a result, again the fixed terminal 103
And the mobile terminal 107 can communicate with each other.

[0036]

Since the present invention is configured as described above, it has the following effects.

[0037] Claims 1 to 3 and claim 4
In the method described in the above, even a fixed terminal whose telephone number is unknown, it is possible to perform call switching by using this as a switching destination, so that it is possible to provide a call switching method and a switching method excellent in practicality. There is an effect that can be.

Furthermore, since a call received by a mobile terminal can be switched to a fixed terminal, traffic at a base station of a mobile network can be reduced, and radio resources in mobile communication can be effectively used. .

In the method according to claim 3 and the method according to claim 4, in addition to the above effects,
Since the call switching is confirmed by voice to the user, there is an effect that a better communication service can be provided.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a telephone network using a call switching method according to an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of a telephone network using a conventional mid-call switching system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Control part 2 Communication return part 3 Storage part 10 Switch part 21 and 22 Voice transmission part 30 PB signal receiving part 50,51,52 Interface part 100 Gateway exchange 101,102 Fixed network exchange 103,104 Fixed terminal 105 Mobile network exchange 106 Base station 107 mobile terminal

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H04B 7/26 109 H04M 3/42 H04M 3/58

Claims (4)

(57) [Claims] 1. A first and a second interface unit connected to a fixed network and forming lines for first and second fixed terminals, and a line connected to a mobile network and connected to a mobile terminal. A third interface unit to be formed; a communication wrapping unit for wrapping and connecting two different lines to enable communication; and forming a communication path between the first to third interface units and the communication wrapping unit. A switch unit; and control means for controlling formation of a communication path in the switch unit. The control means, when a telephone number of the mobile terminal is transmitted from the first fixed terminal, the telephone number The first fixed terminal and the mobile terminal are connected to each other on the basis of the first fixed terminal and the mobile terminal, thereby enabling a call between the two terminals, and the second fixed terminal during the call. When the specific number and the telephone number of the mobile terminal are transmitted from the mobile terminal, the switching of the call is recognized from the specific number and the telephone number, and the first and second fixed terminals and the communication return unit are provided to the switch unit. And a second communication path connecting the first and second fixed terminals, respectively, to enable communication between the first and second fixed terminals, and then release the first communication path. Switching method during a call. 2. The switching system according to claim 1, further comprising a storage unit, wherein the control unit, based on the telephone number of the mobile terminal being transmitted from the first fixed terminal, based on the telephone number. A switch unit for forming a first communication path connecting the first fixed terminal and the mobile terminal to enable communication between the two terminals, line information relating to the communication and telephone information of the mobile terminal. When a specific number and a telephone number of the mobile terminal are transmitted from the second fixed terminal during the call, a call switch is recognized from the specific number and the telephone number, On the basis of the line information stored in the storage unit, the switch unit is configured to form first and second communication paths for connecting the first and second fixed terminals and the communication return unit, respectively. First and second fixed ends On which enables call between the call-switching system, characterized in that to release the first communication path. 3. The call switching method according to claim 2, wherein a voice transmitting means for transmitting a guidance as to whether or not to perform a call switching, and a response for receiving an approval or non-approval response to the guidance from the mobile terminal. Receiving means, and the control means, when allowing the switch unit to form second and third communication paths to enable communication between the first and second fixed terminals, Based on the stored line information, a fourth communication path connecting the voice transmitting means and the mobile terminal is formed to transmit guidance to the mobile terminal, and the mobile terminal responds to the guidance received by the response means. Only when the response of the second and third
A switching method during a call, characterized by forming a communication path of a call. 4. A switching method during a call in mobile communication in which a fixed network and a mobile network are connected to each other, wherein a telephone number of a mobile terminal in the mobile network is changed from a first fixed terminal in the fixed network. When called, the first fixed terminal and the mobile terminal are connected based on the telephone number to enable a call between the two terminals, and a second fixed terminal in the fixed network during the call. When a specific number and the telephone number of the mobile terminal are transmitted from, the call switching is recognized from the specific number and the telephone number, and a guidance as to whether or not to perform the call switching to the mobile terminal is transmitted, Only when the response from the mobile terminal to the guidance is approved, the first and second fixed terminals are connected to enable communication between the two terminals, and then the first fixed terminal is connected to the mobile terminal. Release the connection with the terminal and switch the call During a call switching system, characterized in that.