KR20070077535A - Repetition call forwarding system of mobile phone and method of the same as - Google Patents

Abstract

A system and a method for repeatedly forwarding a call in a mobile terminal are provided to increase a call success rate by enabling a destination terminal to repeatedly forward a call to a CFW(Call Forwarding) terminal located in a different area from the destination terminal. The first HLR(Home Location Register)(106) receives a call connection request from an origination terminal(100) and requests location registration of a destination terminal(112). A CFW number server(124) registers a CFW(Call ForWarding) target phone number so as for the destination terminal to receive a CFW service and is connected with the first HLR(106) storing the number. A CFW terminal(122) is registered in the CFW number server. The second HLR(116) accommodates the CFW terminal. When the first HLR transmits the CFW terminal number to the second HLR by referring to the CFW number server, a call connection is attempted to the CFW terminal. When the call connection to the CFW terminal fails, the first HLR attempts the call connection to the destination terminal. When the call connection to the destination terminal is failed, the second HLR attempts a call connection to the CFW terminal.

Description

Repetition call forwarding system of mobile communication terminal and method thereof {repetition call forwarding system of mobile phone and method of the same as}

1 is a flowchart illustrating a call forwarding method of a conventional location-based mobile communication terminal.

2 is a schematic configuration diagram of a system for repeated call forwarding of a mobile communication terminal of the present invention.

3 is a schematic diagram of another embodiment of a system for repeated call forwarding of a mobile communication terminal of the present invention.

4 is a flowchart illustrating a repetitive call forwarding method of a mobile communication terminal of the present invention.

5 is a flowchart illustrating a method of delivering a call forwarding reason message of a called terminal to a calling terminal in a method of repetitive call forwarding of a mobile communication terminal of the present invention.

<Description of Major Symbols in Drawing>

10, 112: terminating terminal 20, 110: first repeater

30, 108: first exchanger 40, 106: first home position register

50, 114: first forwarding number server 94, 104: originating exchange

92, 102: calling party repeater 90, 100: calling party

60, 116: second home location register 70, 124: second call forwarding number server

118: second exchanger 120: second repeater

80, 122: call forwarding terminal

The present invention relates to a repetitive call forwarding method using the location information of the mobile communication terminal. More specifically, the subscriber of the mobile communication terminal registers at least two landline telephone numbers with different locations, and when the location of the mobile communication terminal is changed, the mobile communication system calls the landline telephone number connected to the location based on the location information. When a call is transferred and the call is not connected, the mobile communication terminal attempts to connect the call again, and the caller terminal sends a reason for the call transfer to the SMS short message.

In general, a call forwarding between a landline phone and a mobile communication terminal is performed when a caller calls a call forwarding target wired telephone while the caller enters a call forwarding service by inputting a phone number to which the call is to be forwarded. When the call is diverted or when the caller calls the called party's mobile communication terminal, the call is transferred to the call transfer target wired telephone.

In addition, a call forwarding method using location information of a mobile communication terminal is disclosed as a call forwarding method of a more advanced mobile communication terminal.

The disclosed invention is disclosed in Korean Patent Laid-Open Publication No. 10-2003-0026445 (an apparatus and method for transferring a call using location information of a wireless terminal).

Referring to FIG. 1, when the caller transmits a call signal, the ring signal is transmitted from a wired switch to a wired terminal of a user through a public telephone network (steps S30 and S31). When the user makes a call to the wired terminal, call forwarding ends (step S32). On the other hand, when the user cannot receive a call by the wired terminal due to his absence, the wired service server detects whether the user has set up the call forwarding service, checks the user's information, and transmits the user's information to the mobile communication server using the IWF. The mobile telecommunication company server determines the user's information and checks the location information of the user's wireless terminal.

The location server receives the location information received from the user's wireless terminal from the base station and the control station through the value-added service path of the mobile communication switch, calculates the latitude and longitude of the wireless terminal, and transmits it to the mobile communication server (steps S33, S34, S35).

The mobile telecommunication company server transmits the received location information to the wired service server using the IWF, and the wired exchange switches the call call signal to the set wired terminal closest to the user's location information (steps S36 and S37).

In the case where a call is made with the user in the wired terminal which is transferred to the mobile terminal by grasping the location information, the mobile terminal server calculates the call charge by applying the discount rate (steps S38 and S40).

On the other hand, if the call is not communicated with the user in the wired terminal which is transferred to the mobile terminal by grasping the location information, the mobile communication company server transmits the call to the user's wireless terminal through the mobile communication switch. A call has been sent to your office from 123-145-6789 "to inform the user (step S39).

In the disclosed invention, when a call comes to a mobile communication terminal, it grasps the location information of the mobile communication terminal, switches the incoming call to a pre-set wired telephone number close to the location, and fails to connect the call forwarding phone number and the telephone connection. If you do, the incoming mobile communication terminal will inform the SMS short message about the missed call.

However, the conventional technology is that when the incoming call is not connected to the landline telephone number, the call attempt is terminated, and there is a problem in that the setting rate is reduced by the call with the mobile communication terminal. By notifying only the terminal of the message about the missed call, the caller has a problem that does not solve the question of why the subscriber of the mobile communication terminal has transferred the call.

The present invention is to solve the problems of the prior art, an object of the present invention, when the call transfer from the mobile communication terminal to another mobile communication terminal, repeated call connection when the call connection failure between the called terminal and the call transfer terminal An attempt is made to provide a repetitive call forwarding system and method of a mobile communication terminal that increases the set rate of a mobile communication terminal by making an attempt.

Another object of the present invention is to provide a repetitive call forwarding system and method of a mobile communication terminal for notifying an SMS short message of the reason for the call forwarding to the caller when the mobile communication terminal has been forwarded.

As a technical idea for achieving the object of the present invention, the present invention registers a call forwarding phone number in the home location register (HLR) of the mobile communication terminal, and calls the call forwarding mobile communication terminal (called terminal) If there is a connection request but the call is impossible, the call is attempted to be transferred to the call forwarding number (call forwarding terminal) registered in the home location register (HLR), and if the call fails to connect with the call forwarding terminal, The present invention provides a system and method for attempting call connection and attempting to connect to the call forwarding terminal again when the call connection fails again.

In addition, a system and a method for transmitting a call forwarding reason of a called terminal as an SMS short message are provided in a calling terminal that attempts to connect a call to a called terminal that has registered a call forwarding.

Hereinafter, with reference to the accompanying drawings for the configuration and operation of the invention for the embodiment of the present invention will be described in detail.

2 is a schematic structural diagram of an embodiment of a repetitive call forwarding system of a mobile communication terminal of the present invention.

2 shows a repetitive call forwarding system for the case where the called terminal (terminal B) and the called terminal (terminal C) are located at the same or in close proximity (located in the same base station).

As shown in FIG. 2, an originating terminal 90 (hereinafter referred to as terminal A) that attempts to connect to a called terminal 10 (hereinafter referred to as terminal B) via an originating base station 92 and an originating exchange 94. D); A first home location register (STS) requesting location registration of the terminal B (10) through the first base station (BTS / BSC # 1) 20 and the first switch (MSC # 1) 20 in response to the call connection request; HLR # 1) 40; In order to receive a call forwarding (CFW) service, the terminal B 10 registers a call forwarding target phone number and stores a first call forwarding number connected to the first home location register 40 that stores the call forwarding service. A server 50 (hereinafter referred to as first CFW number server); A call forwarding terminal 80 (hereinafter referred to as terminal C) registered in the first CFW number server 50; A second home location register (60) (HLR # 2) accommodating the terminal C (80); And a second forwarding number storage server 70 (hereinafter referred to as a second CFW number server) that registers and stores a call forwarding target phone number in order to receive a call forwarding service from the terminal C 80.

According to the present invention, when the terminal B (10) has registered the call forwarding number in the first CFW number server 50, the first terminal A (90) requests a call connection to the terminal B (10) When the first home location register 40 requests the location registration of the terminal B 10 and the terminal B 10 is in a call-disabled state, the first home location register 40 at the first switch 30. Send TTNR (Transfer To Number Request). The first home location register 40 receives the TTNR message and inquires of the first CFW number server 50 to determine the number of the terminal C 80 that is a call forwarding target terminal in response to the TTNR. It goes down to the 2nd home position register 60 accommodated. When the second home location register 60 requests the location registration of the terminal C 80, and the terminal C 80 is in an incapable state of communication, the second home location register (the second home location register) If the TTNR message is notified to 60), the second home location register 60 sends a call forwarding message to the terminal B 10 to the first home location register 40 as a response message of the TTNR. When the first home location register 40 attempts to connect to the terminal B 10 again, but when the call is unavailable, the call forwarding message is sent to the second home location register 60 again. The register 60 attempts to make a call connection with the terminal C 80. In this case, if the call connection fails, the first switch 30 sends the TTNR message back to the second home location register 60, and the second home location register 60 receives the TTNR and attempts to transfer the last call. Recognizing that the second CFW number server 70 performs the call forwarding set in the terminal C (80) itself, or connected to the voice mail to end.

In this way, when the same person has two terminals B 10 and C 80, or the terminal C 80 has a nearby friend or the like, the call forward to the terminal B 80 due to circumstances. This is a useful system if you have.

3 is a schematic diagram of another embodiment of a system for repeated call forwarding of a mobile communication terminal of the present invention.

3 shows a repetitive call forwarding system for a case where the called terminal (terminal B) and the called terminal (terminal C) are located at different places (the base stations located at different places).

An originating terminal 100 (hereinafter referred to as terminal A) that attempts to make a call connection through the originating base station 102 and the originating exchange 104 to the terminating terminal 112 (hereinafter referred to as terminal B); A first home location register requesting the location registration of the terminal B 112 through the first base station (BTS / BSC # 1) 110 and the first switch (MSC # 1) 108 in response to the call connection request; (HLR # 1) 106; The first call forwarding number stored in the terminal B 112 is connected with the first home location register 106 that registers and stores the call forwarding target phone number in order to receive a call forwarding (CFW) service. A server 114 (hereinafter referred to as a first CFW number server); A call forwarding terminal 122 (hereinafter referred to as terminal C) registered in the first CFW number server 114; A second home location register (116) (HLR # 2) accommodating the terminal C (122); A second forwarding number storage server 124 (hereinafter referred to as a second CFW number server) that registers and stores a call forwarding target phone number for receiving a call forwarding service from the terminal C 122; and the terminal C ( And a second base station (BTS / BSC # 2) 120 and a second exchange (MSC # 2) 118 where 122 is located.

When the call forwarding number is registered in the first CFW number server 114 in the terminal B 112, when the call connection request is requested from the first terminal A 100 to the terminal B 112, the first home. When the location register 106 requests registration of the location of the terminal B 112 and the terminal B 112 is in an incapable state, the transfer from the first switch 108 to the first home location register 106 is TTNR (Transfer To). Send Number Request). The first home location register 106 receives the TTNR message and queries the first CFW number server 114 to retrieve the number of the terminal C 122, which is a call forwarding target terminal, in response to the TTNR. And through the second exchanger 118 to the second home location register 116 containing terminal C 122. When the second home location register 116 requests the location registration of the terminal C 122, and the terminal C 122 is in an incapable state, the second switch 118 displays the second home location register ( 116), the second home location register 116 sends a response message of the TTNR to the first home location register 106 via the second exchange 118 and the first exchange 108. Send a call forwarding message to terminal B (112). If the first home location register 106 attempts to connect to the terminal B 112 again, but the call is unavailable, the call forwarding message is returned through the first switch 108 and the second switch 118 again. Send to the second home location register 116, the second home location register 116 attempts to make a call connection with the terminal C (122). At this time, if the call connection fails, the second exchange 118 sends a TTNR message to the second home location register 116 again, and the second home location register 116 receives the TTNR and attempts to transfer the last call. Recognizing that the second CFW number server 124 is performed by the call forwarding set in the terminal C (122) itself, or connected to the voice mail to end.

In this manner, the terminal B 112 at different places performs a repeated call transfer attempt with the terminal C 122 that is the call forwarding target, thereby increasing the call success rate.

 In another embodiment of the present invention, further comprising a CFW private propagation server connected to the first home location register, the terminal B (incoming terminal) when a call connection is failed during a call forwarding or as a result. ) Using the CFW reason transfer server from the terminal to the terminal A (calling terminal) can be sent to the SMS short message with a simple greeting and the reason that the terminal B has been transferred.

That is, in the case of call forwarding, when the terminal list and terminal (terminal A) and the number of the called terminal (terminal B) are delivered to the CFW private delivery server at the same time, the termination list for the location request is transmitted. Report terminal B number SMS message sent to terminal A with the reason message set in advance in terminal B. (SMTP: Short Message Delivery Point to Point is sent to MSC)

In the case of automatic connection, if the TTNR is raised, the termination list is returned in response to the TTNR, and the terminal A and terminal B numbers are reported to the CFW proprietary delivery server, and the terminal A and terminal B numbers are reported by the CFW proprietary delivery server. The reason message set in advance in the terminal B is sent to the terminal A an SMS short message.

4 is a flowchart illustrating a repetitive call forwarding method of a mobile communication terminal of the present invention.

When the terminal B 10 registers the call forwarding number in the first CFW number server 50, requesting a call connection from the first terminal A 90 to the terminal B 10 (S200); ;

Requesting location registration of the terminal B (10) in the first home location register (40) and confirming whether the terminal B (10) is in a disabled state (measures a CFW condition) (S202);

In the CFW condition fulfillment checking step, if a call is available, a normal call path is set (S204). If a call is not available, a TTNR (Transfer To Number Request) is transmitted from the first switch 30 to the first home location register 40. Transmitting (S206);

Receiving a TTNR message from the first home location register (40) and counting a first call forwarding step (S208);

Querying the first CFW number server (50) by the first home location register (40) to inquire the number of the terminal C (80) which is a call forwarding target terminal (S210);

A message indicating that the number of the terminal C 80 and the "start of repeated CFW" from the first home location register 40 to the second home location register 60, which receives the terminal C 80 in response to the TTNR. Transmitting (S212);

Requesting location registration of the terminal C (80) in the second home location register (60) and attempting to connect a call (S214);

(S216) confirming whether the terminal C (80) is in a disabled state (measures a CFW condition) in the second home location register (60);

In the CFW condition fulfillment confirming step, if a call is possible, a normal call path is set (S218). If a call is not possible, the exchange 30 notifies the second home location register 60 of the TTNR message (S220). )Wow;

Transmitting a call forwarding message from the second home location register (60) to the terminal B (10) to the first home location register (40) as a response message of the TTNR (S222);

Requesting location registration of the terminal B (10) in the first home location register (40) and attempting to connect a call (S224);

Confirming, by the first home location register 40, whether the terminal B 10 is in a disabled state (measures a CFW condition) (S226);

In the CFW condition satisfaction check step, if a call is available, a normal call path is set (S228). If a call is not available, a TTNR (Transfer To Number Request) is transmitted from the first switch 30 to the first home location register 40. Transmitting (S230);

Receiving a TTNR message from the first home location register (40), counting a second call forwarding, and transmitting a message indicating a "second CFW start" to the second home location register (60) (S232);

Requesting location registration of the terminal C (80) in the second home location register (60), and attempting to connect a call again (S234);

Confirming, by the second home location register (60), whether the terminal C (80) is in a disabled state (measures a CFW condition) (S236);

In the CFW condition satisfaction check step, if a call is available, a normal call path is set (S238). If a call is not available, a TTNR (Transfer To Number Request) is transmitted from the first switch 30 to the second home location register 60. Transmitting (S240);

Receiving the TTNR in the second home location register (60) recognizes that the "second CFW message", and comprises the step (S242) to stop the call transfer to the terminal B (10).

Although the above embodiment has been described to perform call forwarding when the terminal B 10 satisfies the CFW condition, when the terminal B 10 has registered the call forwarding automatic connection, the step of confirming that the CFW assistance is met (S202). ) Is omitted.

In addition, the second home location register 60 receives the TTNR and recognizes that it is the "second CFW message", and after performing the step (S242) to stop the call transfer to the terminal B (10), the terminal C (80) If the self-directed call is registered, the second home location register 60 may further include the step of performing the call forwarding by querying the second CFW number server 70.

In addition, the second home location register 60 receives the TTNR and recognizes that it is the "second CFW message", and after performing the step (S242) to stop the call transfer to the terminal B (10), the terminal C (80) You can have your voice registered in your voicemail or leave a message.

5 is a flowchart illustrating a method of transferring CFW reason from the called terminal 10 to the calling terminal 90 in the repeated call switching method of the mobile communication terminal of the present invention.

Confirming, by the terminal B 10, the CFW condition fulfillment state in the first home location register 40 (S300);

Transmitting the terminal A number and the terminal B number from the first home location register 40 to the CFW private propagation server when the CFW condition is satisfied (S302);

Querying the CFW reason message set by the terminal B (10) in the CFW reason transfer server (S304);

And transmitting the CFW reason of the inquired terminal B in the SMS short message from the CFW reason transfer server to the terminal A 90 (S306).

In the above, when the call forwarding of the terminal B 10 is set to automatic connection, the step S300 of checking, by the terminal B 10, meeting the CFW condition is omitted.

4 and 5 illustrate only the case where the terminal B 10 and the terminal C 80 of FIG. 2 are located at the same or in close proximity to each other. However, the terminal B 112 and the terminal C ( Naturally, the case where 122) is located at different base stations is of course applied.

According to the present invention, when the same person has two terminal B (10) and the terminal C (80) or a friend or the like close to the terminal C (80), to the terminal C (80) due to circumstances This is a useful system for call forwarding.

In addition, by repeatedly attempting to transfer the call with the terminal C 122 that the terminal B 112 located at different places as the call forwarding target, the call success rate can be increased.

Claims (8)

A first home location register for receiving a call connection request from the calling terminal and requesting a location registration of the called terminal; A CFW number server connected to the first home location register which registers and stores a call forwarding target phone number in order for the called terminal to receive a call forwarding (CFW) service; A call forwarding terminal registered in the CFW number server; And a second home location register accommodating the call forwarding terminal, When the first home location register queries the CFW number server and sends a call forwarding terminal number to the second home location register, attempts to connect a call to the call forwarding terminal, and fails to connect a call to the call forwarding terminal. If the home location register attempts to connect the call with the called terminal and fails to connect the call with the called terminal, the second home location register repeats the incoming call of the mobile communication terminal, characterized in that attempts to connect the call with the call forwarding terminal again. Switching system. The method according to claim 1, And the called terminal and the call forwarding terminal are in close proximity at the same base station location. The method according to claim 1, And the called terminal and the called terminal are located in different base station locations. The method according to any one of claims 1 to 3, Further comprising a CFW private propagation server connected to the first home location register, The CFW cause forwarding server repeats the call forwarding system of the mobile communication terminal, characterized in that for transmitting the call forwarding reason message set by the called terminal to the calling terminal. In a mobile communication system including a CFW number server storing a forwarding number of the called terminal, If there is a call connection request from the calling terminal to the called terminal, when the first home location register containing the called terminal requests a location registration of the called terminal, the destination terminal side exchange transmits a TTNR (TTNR) to the first home location register. Number request); Receiving a TTNR message from the first home location register and counting a first call forward; Querying the CFW number server in the first home location register to inquire the number of the call forwarding terminal which is a call forwarding target terminal; Transmitting, by the first home location register, a message indicating a "start of repeated CFW" and a number of the call forwarding terminal to a second home location register accommodating the call forwarding terminal in response to the TTNR; Requesting location registration of the call forwarding terminal in the second home location register and attempting to connect a call; Confirming, by the second home location register, whether the call forwarding terminal is in a disabled state (measures a CFW condition); Setting a normal call path if a call is available in the CFW condition satisfaction checking step, and if a call is not possible, notifying a second TTNR message to the second home location register by the exchange; Sending, by the second home location register, a call forwarding message to the called terminal to the first home location register as a response message of the TTNR; Requesting a location registration of the called terminal from the first home location register and attempting to connect a call; Confirming, by the first home location register, whether the called terminal is in a disabled state (measures a CFW condition); Setting a normal call path when the call is available in the CFW condition satisfaction checking step, and transmitting a Transfer To Number Request (TTNR) from the exchange to the first home location register when the call is unavailable; Receiving a TTNR message from the first home location register, counting a second call forwarding, and transmitting a message indicating “start of second CFW” to the second home location register; Requesting location registration of the call forwarding terminal in the second home location register and attempting to connect a call again; Confirming, by the second home location register, whether the call forwarding terminal is in a disabled state (measures a CFW condition); Setting a normal call path if the call is available in the CFW condition satisfaction checking step, and transmitting a Transfer To Number Request (TTNR) to the second home location register from the exchange if the call is unavailable; Receiving a TTNR at the second home location register, recognizing that it is a "second CFW message", and stopping the call forwarding to the called terminal. The method according to claim 5, And the called terminal and the called terminal are in close proximity at the same base station location. The method according to claim 5, And the called terminal and the called terminal are in different base station positions. The method according to any one of claims 5 to 7, Further comprising a CFW private propagation server connected to the first home location register, The CFW reason forwarding server further comprises the step of transmitting a call forwarding reason message set by the called terminal to the calling terminal repeating call forwarding method, characterized in that the mobile communication terminal.

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