KR101003691B1 - Method and system for providing mobile transfer service in communication system - Google Patents

Abstract

The present invention provides a terminal switching service method for converting a terminal from a mobile terminal in use in a communication system to another mobile terminal so that the communication service provided to the mobile terminal in use can be provided to the other mobile terminal instead. In a communication system according to the present invention, a method for setting a terminal switching from the first communication terminal to the second communication terminal in the communication system according to the present invention, the terminal switching server, from the first communication terminal to the second communication terminal Receiving a terminal switch request message for the terminal switch setting of the terminal; Sending, by the terminal switching server, a terminal switching command message to a home location register; Registering, by the home location register, terminal switching information in a profile of a first communication terminal and setting a trigger parameter for terminal switching outgoing call processing at an exchange of a first communication terminal; And registering, by the home location register, the terminal switching information in the profile of the second communication terminal and setting a trigger parameter for terminal switching outgoing call processing at the switchboard of the second communication terminal side.

Terminal switching, mobile communication, incoming call, outgoing call

Description

Terminal switching service providing method and system for the same {METHOD AND SYSTEM FOR PROVIDING MOBILE TRANSFER SERVICE IN COMMUNICATION SYSTEM}

The present invention relates to mobile terminal switching, and more particularly, to mobile terminal switching for providing a mobile communication service provided to one mobile terminal instead of another mobile terminal.

If you want to transfer all profiles of the mobile terminal that is currently being used to a new mobile terminal, a device change or termination and opening procedure are required, which is a one-time permanent feature. Also, the same procedure must be repeated to return to the original state after profile transfer.

Meanwhile, recently, a WCDMA system capable of a video call is introduced, and a mobile subscriber can detach and use a smart card (eg, USIM) mounted on a mobile terminal in another mobile terminal. However, this process is cumbersome that the mobile subscriber has to remove the smart card from the mobile terminal and attach it to another mobile terminal. Therefore, to solve this inconvenience, there is a need for a method that allows the mobile subscriber to freely use a mobile terminal other than the mobile terminal currently in use.

The present invention has been proposed to solve the above problems, and provides a communication service provided to the mobile terminal in use instead of the other mobile terminal by switching the terminal from the mobile terminal in use to another mobile terminal in the communication system. It is an object of the present invention to provide a method for setting a terminal switching service that can be received.

Another object of the present invention is to provide a terminal switching service releasing method for releasing terminal switching from an already used mobile terminal to another mobile terminal.

In addition, the present invention, the call call processing method in the terminal switching service for providing a call call to the other mobile terminal to the mobile terminal in use in the state of switching the terminal from the mobile terminal in use to the other mobile terminal; There is another purpose to provide.

In addition, another object of the present invention is to provide a terminal switching service system for providing the above methods.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

According to a first aspect of the present invention for achieving the above object, a method for setting a terminal switching from a first communication terminal to a second communication terminal in a communication system, the terminal switching server, the first communication terminal in the first Receiving a terminal switch request message for setting a terminal switch to a communication terminal; Sending, by the terminal switching server, a terminal switching command message to a home location register; Registering, by the home location register, terminal switching information in a profile of a first communication terminal and setting a trigger parameter for terminal switching outgoing call processing at an exchange of a first communication terminal; And registering, by the home location register, the terminal switching information in the profile of the second communication terminal and setting a trigger parameter for terminal switching outgoing call processing at the switchboard of the second communication terminal side.

According to a second aspect of the present invention for achieving the above object, a method for releasing terminal switching from a first communication terminal to a second communication terminal in a communication system includes: a caller at the first communication terminal side includes a called number; Receiving an originating call from the first communication terminal; Sending, by the exchange at the first communication terminal, a trigger processing request message to a terminal switching server based on a trigger parameter for terminal switching outgoing call processing set in the profile of the first communication terminal; Comparing, by the terminal switching server, an identification number of the first communication terminal with an identification number of the second communication terminal; Transmitting, by the terminal switching server, a terminal switching release command message to a home location register when the identification numbers match; And transmitting, by the terminal switching server, a message instructing the incoming call processing of the outgoing call to the exchange at the first communication terminal side.

According to a third aspect of the present invention for achieving the above object, a method for processing an outgoing call of the second communication terminal in the terminal switching state from the first communication terminal to the second communication terminal in the communication system, the second communication Receiving, by the exchange at the terminal side, an outgoing call including the called number from the second communication terminal; Sending, by the switch at the second communication terminal side, a trigger processing request message to a terminal switching server based on a trigger parameter for terminal switching outgoing call processing set in the profile of the second communication terminal; Receiving, by the switch at the second communication terminal side, a connection message from the terminal switching server, the connection message including the identification number of the first communication terminal as an outgoing replacement number; And setting the identification number of the first communication terminal included in the connection message as an outgoing alternative number as an outgoing number by the exchange of the second communication terminal to process the incoming call. .

In accordance with a fourth aspect of the present invention for achieving the above object, an outgoing call from a third communication terminal to the first communication terminal in a communication system providing a terminal switching service from a first communication terminal to a second communication terminal. The processing method includes the steps of: receiving, by a home location register on the first communication terminal side, a called location information query message for a first communication terminal from an exchange on the third communication terminal side; Checking, by the home location register on the first communication terminal side, whether the first communication terminal is in a terminal switching state; In the terminal switching state, the home location register of the first communication terminal checks the information of the second communication terminal in the profile of the first communication terminal and transmits a location information query message to the home location register of the second communication terminal. Doing; The home location register on the first communication terminal side receives a location information response message from the home location register on the second communication terminal side, and based on this, inquires routing information to an exchange on the second communication terminal side and routes accordingly. Receiving an information response; Sending, by the home location register on the first communication terminal side, routing information to the exchange on the second communication terminal side to the exchange on the third communication terminal side; And receiving, by the switch at the second communication terminal, a call connection request for the first communication terminal from the switch at the third communication terminal, and performing an incoming process to the second communication terminal. .

According to a fifth aspect of the present invention for achieving the above object, a terminal switching service system for providing a terminal switching service from a first communication terminal to a second communication terminal in a communication system, the terminal originated from the second communication terminal A terminal switching server that performs terminal switching service logic in response to receiving the switching request message; Upon receiving the terminal switching command from the terminal switching server, the terminal switching activation code and the information of the second communication terminal are registered in the profile of the first communication terminal, and the terminal switching activation code and the first communication are in the profile of the second communication terminal. A home location register for registering information of the terminal; And a switch on the second communication terminal side that registers a trigger parameter for terminal switching outgoing call processing and information on the first communication terminal in a profile of a second communication terminal according to the message received from the home location register. It is done.

According to the present invention as described above, even if the mobile subscriber attempts to make a call using the other mobile terminal after switching the terminal from the previously used mobile terminal to the other mobile terminal, the same as attempting the call from the previously used mobile terminal. Call effect can be obtained. Accordingly, another mobile terminal can be easily used while replacing the terminal when the terminal is lost, thereby eliminating inconvenience caused by the terminal loss.

The foregoing and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, in which: There will be. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a network configuration of a terminal switching service system according to an embodiment of the present invention.

As shown in FIG. 1, the terminal switching service system according to the present invention includes a plurality of mobile terminals 110 and 120 and exchangers 130, 140, MSC1 and MSC2 in which the mobile terminals 110 and 120 are located. , The home location registers 150, 160, HLR1, and HLR2 accommodating the respective mobile terminals 110 and 120, the terminal switching server 170 performing terminal switching processing service logic, and the IMSI of the mobile terminals 110 and 120. It includes an FNPS 180 that manages International Mobile Station Identity (MSN) and Mobile Subscriber ISDN Number (MSISDN) mapping data.

In FIG. 1, it is assumed that a mobile communication subscriber uses a mobile communication service by switching a terminal to the mobile terminal 110 while using the mobile terminal 120. Accordingly, the mobile terminal 120 is referred to as an existing mobile terminal, and the mobile terminal 110 is referred to as a switching target mobile terminal. The mobile terminals 110 and 120 may be applied without limitation as long as they are terminals capable of voice or video communication and text message transmission and reception. Examples include PDAs, cellular phones, PCS phones, GSM phones, W-CDMA phones, CDMA-2000 phones, MBMS phones, telematics terminals, and the like. Preferably, the switching target mobile terminal 110 may be a telematics terminal installed in a vehicle to provide a communication service.

In order to receive the communication service by switching the terminal from the existing mobile terminal 120 to the switching target mobile terminal 110, the mobile communication subscriber provides a service code indicating the terminal switching service to the switching target mobile terminal 110 (eg, * 120). ), And the phone number (ie, MSISDN) of the existing mobile terminal 120 to be switched and inputs a call button. Accordingly, the terminal switching service information is registered in the terminal switching server 170 and the home location registers 150 and 160, and the call, message, etc. to be received by the existing mobile terminal 120 are converted to the mobile terminal 110. Is forwarded to

The mobile terminals 110 and 120 and the exchanges 130 and 140 are connected through a base station NodeB and a base station controller RNC, and the exchanges 130 and 140 process basic and additional services, and incoming and outgoing call processing of subscribers. It performs the function of location registration and handoff procedure, interworking with other networks such as public network or intelligent network system. The exchanges 130 and 140 download the service profile of the mobile terminals 110 and 120 from the home location registers 150 and 160 when registering the location of the mobile terminals 110 and 120, and register the visited location register VV. The mobile terminal 110 or 120 processes the inbound and outbound calls according to the service profile registered in the location register.

When the terminal switch is made, the exchanges 130 and 140 download information related to the terminal switch from the home location registers 150 and 160 and store the information in the service profile stored in the visited location register. In detail, the exchange 130 downloads the information of the existing mobile terminal 120, a camel subscription information (CSI) that is a call processing trigger parameter related to terminal switching, and additional service information from the home location register 150. Register with the service profile of the mobile terminal 110 to be switched. The exchange 140 downloads information of the switching target mobile terminal 110 and CSI, which is a call processing trigger parameter related to terminal switching, from the home location register 160 and registers the service profile of the existing mobile terminal 120. When the terminal switch is released, such information is deleted and the original information is restored.

The home location registers 150 and 160 are databases that store service profiles related to subscriber information of the mobile terminals 110 and 120, and include identification numbers (IMSI, MSISDN, etc.) and additional service information of the mobile terminals 110 and 120. Store and manage location information and information required for switching a terminal according to the present invention. The home location register 160 of the existing mobile terminal 120 registers the terminal switching activation code in the service profile of the existing mobile terminal 120 when the terminal switch is made, and also accommodates the mobile terminal 110 to be switched. System data (GT information) of the location register 150 and information (IMSI, MSISDN) of the switching target mobile terminal 110 are registered. On the contrary, when the terminal switch is released, the home location register 160 of the existing mobile terminal 120 deletes the terminal switch information and restores it. On the other hand, the home location register 150 of the switching target mobile terminal 110 registers the terminal switching activation code in the service profile of the switching target mobile terminal 110 when the terminal switching is made, and also of the existing mobile terminal 120. Register information (MSISDN) and additional service information.

The terminal switching server 170, as an intelligent network equipment, stores and manages terminal switching service subscriber information and performs terminal switching service logic. That is, the terminal switching server 170 performs terminal switching service logic with reference to the FNPS 180 according to the service code included in the message transmitted from the home location registers 150 and 160.

The flexible number portability server (FNPS) 180 stores and manages IMSI and MSISDN mapping data of an existing mobile terminal.

Although the terminal switching server 170 and the FNPS 180 are described as separate components in the present embodiment, the FNPS 180 manages the mapping data of the MSISDN and the IMSI of the mobile terminal, and thus the terminal switching server 170 and the FNPS 180. 180 may be integrated into one, and in this case, the FNPS 180 may be used only as a DB and perform the functions of the above-described FNPS 180 in the terminal switching server 170. Therefore, it should be understood that the terminal switching server in the following claims refers to a case where the terminal switching server 170 and the FNPS 180 of the present embodiment are integrated. In the following embodiments, it is assumed that the integrated construction.

2 is a flowchart illustrating a terminal switching service subscription process according to an embodiment of the present invention.

A mobile subscriber who wants to subscribe to a terminal switching service according to the present invention subscribes to a terminal switching service through an agency or a customer center. The mobile subscriber subscribes to the mobile terminal switching service by designating the mobile terminal 110 (MS1 in FIG. 2). In this case, a plurality of mobile subscribers may subscribe to a terminal switching service for one switching target mobile terminal 110. For example, family members may designate one mobile terminal 110 (MS1 in FIG. 2) as the switching target mobile terminal 110 to subscribe to the terminal switching service.

When the mobile subscriber subscribes to the terminal switching service as described above, the customer information system (WISE) transmits the mobile terminal 120 and the home location register 160 (HLR2) to accommodate the mobile terminal 120 of the mobile subscriber. Information (IMSI, MSISDN) of the switching target mobile terminal 110 and configuration information (eg, CSI (Camel Subscription Information)) for the terminal switching service are transmitted (S201). Then, the home location register 160 (HLR2) registers the information of the switching target mobile terminal 110 and the terminal switching service setting information (for example, CSI (Camel Subscription Information)) in the profile of the mobile communication subscriber (S203). In the drawing, only one mobile communication subscriber is described, but as described above, a plurality of subscribers may designate one switching target mobile terminal 110. In this case, the home location register for accommodating the terminal of each subscriber transmits and registers the mobile terminal information of the subscriber, the information of the mobile terminal to be switched, and the setting information for the terminal switching service.

Next, the customer information system is a home location register 150 (HLR1) that accommodates the switching target mobile terminal 110, the terminal switching subscription information, that is, the subscriber's existing mobile terminal 120 information and the switching target mobile terminal 110. Information of the UE and configuration information for the terminal switching service (for example, CSI (Camel Subscription Information)) is transmitted (S205). When a plurality of subscribers designate one switching target mobile terminal 110, the customer information system includes information MS1 of the switching target mobile terminal 110 and information of mobile terminals of the plurality of subscribers MS2 # 1 and MS2 #. 2, MS2 # 3, MS2 # 4 ...) are transmitted to the home location register 150 (HLR1) that receives the switching target mobile terminal 110. Then, the home location register 150 (HLR1) registers the information of the plurality of mobile terminals in the information of the switching target mobile terminal 110, and also sets up information for the terminal switching service (for example, CSI (Camel Subscription Information)). Register (S207).

Next, the customer information system transmits the IMSI and MSISDN mapping data of the mobile terminal 120 of the mobile communication subscriber who applied for the terminal switching service to the FNPS 180 (S209), and the FNPS 180 transmits the received IMSI and the received IMSI. The MSISDN mapping data is registered and managed (S211). In addition, the customer information system includes terminal switching subscription information, that is, information MS1 of the switching target mobile terminal 110 and information of mobile terminals of a plurality of subscribers MS2 # 1, MS2 # 2, MS2 # 3, and MS2 # 4. ...) To the terminal switching server 170 (S213), the terminal switching server 170 registers and manages the information based on the switching target mobile terminal 110 (S215).

3 is a flowchart illustrating a process of setting a terminal switching function in a terminal switching service system according to an embodiment of the present invention. This is an example of the case where the home location registers 150 that accommodate the profile information of the mobile terminal 110 are the same.

As shown in FIG. 3, first, the mobile subscriber may switch to the switching target mobile terminal 110 in order to switch the use of the terminal from the previously used mobile terminal 120 to the switching target mobile terminal 110 (MS1 in FIG. 3). Enter the terminal switching service activation code (eg, * 120) and the telephone number of the existing mobile terminal 120 (ie, MSISDN, denoted as 'MSISDN2' in FIG. 3). Then, the switching target mobile terminal 110 receives a service profile of the switching target mobile terminal 110 via the exchange 130 (MSC1 in FIG. 3) through a processUSSD (Unstructured Supplementary Service Data) -Request message, which is a terminal switching request message. Transmit to the home location register (HLR) (S301, S303). Here, the ProcessUSSD-Request message includes the IMSI (denoted as 'IMSI1' in FIG. 3), the service code, and the telephone number (MSISDN2) of the existing mobile terminal 120 of the switching target mobile terminal 110.

The home location register then analyzes the ProcessUSSD-Request message received via the exchange MSC1. Since the ProcessUSSD-Request message includes a terminal switching service code (* 120), the home location register transmits the ProcessUSSD-Request message to the terminal switching server 170 for terminal switching processing (S305). That is, the home location register transmits a ProcessUSSD-Request message to the terminal switching server 170 by confirming that the terminal switching activation code is registered in the service profile of the mobile subscriber.

Terminal switching server 170 receives the ProcessUSSD-Request message from the home location register, the IMN of the existing mobile terminal 120 using the phone number (ie, MSISDN) of the existing mobile terminal 120 in the FNPS (180). Search for a telephone number (ie, MSISDN) of the switching target mobile terminal 110 by using the IMSI of the switching target mobile terminal 110, and outputs an ATM (AnyTime Modification) message, which is a terminal switching command message, to the home location. Transfer to the register (S307). The ATM message includes an identification code indicating the switching of the terminal and IMSI and MSISDN of the switching target mobile terminal 110 and the existing mobile terminal 120.

Next, the home location register registers the information related to the terminal switching in the service profile of the switching target mobile terminal 110 and the existing mobile terminal 120 based on the identification code indicating the terminal switching included in the ATM message. (S309). That is, the terminal switching activation code indicating that the terminal switching has been made in the service profile of the existing mobile terminal 120 and the IMSI and MSISDN of the switching target mobile terminal 110 are registered, and the service profile of the switching target mobile terminal 110 is registered. Registers the terminal switching activation code indicating that the terminal switching has been made and the MSISDN of the existing mobile terminal 120.

Subsequently, the home location register and the existing O-CSI of the subscriber registered in the exchange 140 (MSC2) in which the existing mobile terminal 120 is located through a Delete Subscriber Data (DSD) message and an Insert Subscriber Data (ISD) message. The D-CSI is deleted and new Originating-Camel Subscription Information (O-CSI) and Dialed Service-Camel Subscription Information (D-CSI) are registered for the UE switching service (S311). The exchange 140 (MSC2) deletes the existing O-CSI and D-CSI, registers a new O-CSI and D-CSI for the terminal switching service, and transmits a DSD / ISD response message to the home location register (S313). .

In addition, the home location register is a subscriber's existing O-CSI registered in the switch 130 (MSC1) where the switching target mobile terminal 110 is located through a Delete Subscriber Data (DSD) message and an Insert Subscriber Data (ISD) message. And D-CSI is deleted, new O-CSI and D-CSI for UE switching service are registered, and MSISDN and additional service information of the existing mobile terminal 120 is registered (S315). The exchange 130 (MSC1) registers the CSI, the MSISDN of the existing mobile terminal 120 and the additional service information, and registers the terminal switching activation code in the service profile of the mobile terminal 110 to be switched. When all the processes are completed, the exchange 130 (MSC1) transmits a DSD / ISD response message to the home location register (S317).

In this way, the home location register which has received the response message from the exchanges MSC1 and MSC2 transmits the ATM response message to the terminal switching server 170 as a result of the processing (S319). The terminal switching server 170 transmits a result notification message to the home location register as the terminal switching is set from the existing mobile terminal 120 to the switching target mobile terminal 110 (S321). The existing mobile terminal 120 is notified of the terminal switching state and the switching target mobile terminal 110 notifies that the terminal switching process is completed. The home location register transmits a notification message to the existing mobile terminal 120 and the switching target mobile terminal 110 (S323).

In accordance with the above process, all the incoming calls to the existing mobile terminal 120, for example, voice call, video call, text message call, multimedia message call, packet call, etc. can be received instead of the mobile terminal 110 to be switched. do. Therefore, when the switching target mobile terminal 110 is a telematics terminal mounted in a vehicle, the mobile communication subscriber boards a vehicle and converts his mobile terminal into a telematics terminal to call calls to be received by the mobile terminal to the telematics terminal. It will be available instead. Accordingly, the mobile subscriber can use the mobile communication service without being disturbed while driving.

4 is a flowchart illustrating a process of setting terminal switching in a terminal switching service system according to another exemplary embodiment of the present invention, wherein a home location register and a switching target mobile terminal 110 accommodate profile information of an existing mobile terminal 120. ) Is an example of a case where the home location register for accommodating profile information is different.

As shown in FIG. 4, first, the mobile subscriber may switch to the switching target mobile terminal 110 in order to switch the use of the terminal from the previously used mobile terminal 120 to the switching target mobile terminal 110 (MS1 in FIG. 4). Enter the terminal switching service code (eg, * 120) and the telephone number of the existing mobile terminal 120 (ie, MSISDN, denoted as MSISDN2 in FIG. 4). Then, the switching target mobile terminal 110 receives a ProcessUSSD-Request message, which is a terminal switching request message, through a switch 130 (MSC1 in FIG. 4) and receives a service profile of the switching target mobile terminal 110. In FIG. 4, the data is transmitted to the HLR1 (S401 and S403). Here, the ProcessUSSD-Request message includes an IMSI (denoted as IMSI1 in FIG. 4), a service code, and an MSISDN (denoted as MSISDN2 in FIG. 4) of the mobile terminal 110 to be switched.

Home location registerer 150 (HLR1) then analyzes the ProcessUSSD-Request message received via exchange 130 (MSC1). Since the ProcessUSSD-Request message includes the terminal switching service code, the home location register 150 (HLR1) transmits the ProcessUSSD-Request message to the terminal switching server 170 for the terminal switching process (S405). That is, the home location register 150 (HLR1) confirms that the terminal switching activation code is registered in the service profile of the mobile subscriber and transmits a ProcessUSSD-Request message to the terminal switching server 170.

The terminal switching server 170 receiving the ProcessUSSD-Request message from the home location register 150 (HLR1) uses the existing mobile terminal (ie, MSISDN) of the existing mobile terminal 120 at the FNPS 180. After retrieving the IMSI of 120 and retrieving the telephone number (ie, MSISDN) of the switching target mobile terminal 110 using the IMSI of the switching target mobile terminal 110, an ATM (AnyTime Modification), which is a terminal switching command message, is retrieved. The message is transmitted to the home location register 160 (HLR2) that manages the profile information of the existing mobile terminal 120 (S407). The ATM message includes an identification code indicating the terminal switching and the IMSI and MSISDN of the mobile terminal 110 to be switched.

The home location register 160 (HLR2) analyzes the received ATM message and registers information (eg, a terminal switching activation code) related to terminal switching in a profile of the existing mobile terminal 120, and switches the target mobile terminal 110. ) IMSI and MSISDN are registered (S409). Then, the home location register 160 (HLR2) registers the subscribers registered at the exchange 140 (MSC2) where the existing mobile terminal 120 is located through a Delete Subscriber Data (DSD) message and an Insert Subscriber Data (ISD) message. The existing O-CSI and D-CSI are deleted and a new O-CSI and D-CSI for UE switching service are registered (S411). Exchange 140 (MSC2) deletes existing O-CSI and D-CSI, registers new O-CSI and D-CSI for UE switching service, and sends DSD / ISD response message to home location register 160 (HLR2). It transmits (S413). The home location register 160 (HLR2) transmits an ATM response message to the terminal switching server 170 in response to receiving the DSD / ISD response message (not shown).

Meanwhile, the terminal switching server 170 also transmits an ATM (AnyTime Modification) message, which is a terminal switching command message, to the home location registers 150 (HLR1) managing the profile information of the mobile terminal 120 to be switched (S415). Here, the ATM message includes an identification code indicating the terminal switching and the MSISDN of the existing mobile terminal 120.

The home location register 150 (HLR1) analyzes the received ATM message and registers information (eg, a terminal switching activation code) related to terminal switching in a profile of the mobile terminal 110 to be switched, and the existing mobile terminal 120. Register MSISDN (S417). Then, the home location register 150 (HLR1) registers the subscriber registered with the switch 130 (MSC1) in which the switching target mobile terminal 110 is located through a Delete Subscriber Data (DSD) message and an Insert Subscriber Data (ISD) message. The existing O-CSI and D-CSI are deleted, new O-CSI and D-CSI are registered for the terminal switching service, and the MSISDN and additional service information of the existing mobile terminal 120 are registered (S419). The exchange 130 (MSC1) registers the CSI, the MSISDN of the existing mobile terminal 120 and the additional service information, and registers the terminal switching activation code in the service profile of the mobile terminal 110 to be switched. When all the processes are completed, the exchange 130 (MSC1) transmits a DSD / ISD response message to the home location register (S421). The home location register 150 (HLR1) transmits an ATM response message to the terminal switching server 170 in response to receiving the DSD / ISD response message (not shown).

On the other hand, the embodiment with reference to Figures 3 and 4 is that one existing mobile terminal 120 to the terminal switching to the switching target mobile terminal 110, but the present invention is not limited thereto, as described with reference to FIG. As a plurality of mobile communication subscribers can designate the same switching target mobile terminal 110 to subscribe to the terminal switching service, a plurality of existing mobile terminals 120 can simultaneously switch terminals to the switching target mobile terminal 110. have. The user of the plurality of existing mobile terminals 120 sets the terminal switching to the switching target mobile terminal 110 according to the process described with reference to FIGS. 3 and 4, respectively.

When the terminal is switched as described above, the voice and video call call that is received by the existing mobile terminal 120 is received by the mobile terminal 110 to be switched, so that the mobile subscriber is not the mobile terminal 120 but the mobile terminal to be switched In step 110, a communication service is provided.

5 is a flowchart illustrating an outgoing call processing method in a terminal switching state according to an embodiment of the present invention.

Referring to FIG. 5, as described with reference to FIGS. 3 and 4, the mobile subscriber performs terminal switching from the existing mobile terminal 120 to the switching target mobile terminal 110 and then uses the switching target mobile terminal 110. The call is sent (S501). The outgoing call originating from the switching target mobile terminal 110 is transmitted to the exchange 130 (MSC1) including the called party's telephone number.

The exchanger 130 (MSC1) receiving the outgoing call from the switching target mobile terminal 110 (MS1) checks the originating CSI (O-CSI) in the profile information of the switching target mobile terminal 110 (S503). However, when the originating call of the switching target mobile terminal 110 is received in O-CSI of the switching target mobile terminal 110 registered in the exchange 130 (MSC1), the home location register 150 of the switching target mobile terminal 110 is unconditionally received. Access to HLR1) and the service key of the intelligent network service.

Accordingly, the exchange 130 (MSC1) transmits an InitialDP message, which is a trigger processing request message including a service key, to the home location register 150 (HLR1) accommodating the switching target mobile terminal 110 according to the O-CSI ( S505).

The home location register 150 (HLR1), which accommodates the switching target mobile terminal 110, searches for a routing number in the profile of the switching target mobile terminal 110 based on the service key included in the InitialDP message, and the routing number thereof. In operation S507, a connect message including a RN (Routing Number) is returned to the switch 130 (MSC1).

The exchange 130 (MSC1) is set in the routing number included in the connection message received from the home location register (150, HLR1) and D-CSI (Dialed-CSI) registered in the profile of the mobile terminal 110 to be switched. The routing numbers are compared (S509), and if they match, an InitialDP message, which is a trigger processing request message including the service key set in the D-CSI, is transmitted to the terminal switching server 170 (S511). The service key is a key indicating a terminal switching service, and the InitialDP message includes the telephone number MSISDN of the mobile terminal 110 to be switched.

Upon receiving the InitialDP message from the exchange 130 (MSC1), the terminal switching server 170 confirms that the terminal switching service request is made according to the service key included in the InitialDP message, and the telephone number included in the InitialDP message is a switching target. Check whether the mobile terminal 110 matches the telephone number (S513). That is, it is checked whether the calling number matches the phone number of the mobile terminal 110 to be switched.

If it does not match, the terminal switching server 170 instructs the switch 130 (MSC1) to proceed with the general call processing procedure, and if the telephone number included in the InitialDP message has switched the terminal to the switching target mobile terminal 110 In the case of the existing mobile terminal 120, the terminal switching release procedure is performed (S515).

However, in the present embodiment, since the switch target mobile terminal 110 originated a call, the phone number included in the InitialDP message and the phone number of the switch target mobile terminal 110 coincide, and thus, the terminal switch server 170 Search for the phone number of the existing mobile terminal 120 that has switched terminals by using the phone number of the mobile terminal 110 to be switched, and replace and replace the retrieved phone number (MSISDN of MS2) of the searched existing mobile terminal 120. A connect message including the number is transmitted to the switch 130 (MSC1) (S517). In addition, the terminal switching server 170 transmits the FCI message including the billing number to the exchange 130 (MSC1) for billing processing for the outgoing call (S519). The billing number is preferably a telephone number of the existing mobile terminal 120. Since the call is sent to the switching target mobile terminal 110 on behalf of the existing mobile terminal 120, the billing is processed by the existing mobile terminal 120.

On the other hand, the exchange 130, MSC1 receiving the connection message containing the calling alternative number from the terminal switching server 170, the calling alternative number, that is, the phone number of the existing mobile terminal 120 as the calling party number The caller handles the outgoing call to the called party's phone number (521). Accordingly, the telephone number of the existing mobile terminal 120 is displayed as the caller's number instead of the telephone number of the mobile terminal 110 to be switched.

6 is a flowchart illustrating a call call reception method in a terminal switching service according to an embodiment of the present invention. As described with reference to FIGS. 3 and 4, after the terminal is switched from the existing mobile terminal 120 to the switching target mobile terminal 110, the call call to be received by the existing mobile terminal 120 is transferred. The following describes how to handle incoming calls. In this embodiment, the home location register accommodating the existing mobile terminal 120 and the home location register accommodating the switching target mobile terminal 110 are the same.

As shown in FIG. 6, when a mobile subscriber attempts to make a voice or video call with an existing mobile terminal 120 (MS2), the mobile subscriber is sent to his mobile terminal (MS3 in FIG. 6). The phone number of the mobile terminal 120 is input to input a call button. Accordingly, the mobile terminal MS3 transmits an outgoing call including the telephone numbers of the existing mobile terminals 120 and MS2 to the mobile communication network (S601).

The call originating from the mobile terminal MS3 is transmitted to the originating exchange MSC3, and the originating exchange MSC3 receives the called party's telephone number included in the originating call, that is, the telephone number of the existing mobile terminal 120. Incoming location information is queried to the home location register (HLR) (S603).

The home location register (HLR) receiving the incoming location information query checks whether the existing mobile terminal 120, which is the called party terminal, is switched to the terminal (S605). If the existing mobile terminal 120 is not switched terminal, the home location register (HLR) proceeds the call processing to the switch 140 (MSC2) where the existing mobile terminal 120 is located according to a general call processing procedure.

On the other hand, when the existing mobile terminal 120, which is the called terminal, is switched to the terminal, the home location register (HLR) has a terminal switching activation code registered in the profile of the existing mobile terminal 120 and the switching target mobile terminals 110 and MS1. Since the IMSI and the MSISDN are registered, the home location register (HLR) checks the IMSI of the switching target mobile terminal 110 in the profile of the existing mobile terminal 120 and uses the checked IMSI to switch to the switching target mobile terminal ( The exchanger 130 (MSC1) information of the 110 is checked (S607).

The home location register (HLR) confirming the information of the exchange 130 (MSC1) in which the switching target mobile terminal 110 is located transmits a routing information request message (PRN: Provide Roaming Number) to the corresponding exchange 130 (MSC1) ( In operation S609, the switch 130 (MSC1) responds to the home location register (HLR) with a routing information message (MSRN: Mobile Station Roaming Number) corresponding to the routing information request message (S611). The routing information request message includes the IMSI of the switching target mobile terminal 110 and the MSISDN of the existing mobile terminal 120. The routing information includes the IMSI of the switching target mobile terminal 110 and the exchanges 130 and the MSC1. A number is included.

The home location register (HLR) transmits the called location information response including routing information to the switching unit 130 (MSC1) of the switching target mobile terminal 110 to the calling side exchange MSC3 (S613), and the calling side. The switch MSC3 requests a call connection to the switch 130 (MSC1) of the switching target mobile terminal 110 according to the routing information included in the called location information response (S615).

The switching unit 130 (MSC1) on the side of the switching target mobile terminal 110 performs an incoming call processing to the switching target mobile terminal 110 (MS1) in accordance with the call connection of the calling side switching center MSC3 (S617). Accordingly, the call of the caller is processed by the mobile terminal 110 to be switched instead of the existing mobile terminal 120, and the caller makes a call with the user of the mobile terminal 110 to be switched.

As described above, a mobile communication subscriber who subscribes to a terminal switching service receives another mobile terminal instead of a voice or video call that is received by his mobile terminal, thereby enabling continuous communication service even when the user loses his / her terminal. . In particular, when the mobile terminal to be switched is a telematics terminal mounted in a vehicle, the mobile communication subscriber who has subscribed to the terminal switching service receives a call service that is received by using a telematics terminal mounted in the vehicle instead of his mobile terminal. You will be able to drive.

7 is a flowchart illustrating a call call reception method in a terminal switching service according to another embodiment of the present invention. As described with reference to FIGS. 3 and 4, after the terminal is switched from the existing mobile terminal 120 to the switching target mobile terminal 110, the call call to be received by the existing mobile terminal 120 is transferred. The following describes how to handle incoming calls. In the present embodiment, the home location register accommodating the existing mobile terminal 120 is different from the home location register accommodating the switching target mobile terminal 110.

As shown in FIG. 7, when a mobile subscriber attempts to make a voice or video call to an existing mobile terminal 120 (MS2), the mobile subscriber is connected to his mobile terminal (MS3 in FIG. 6). The phone number of the mobile terminal 120 (MS2) is input to enter a call button. Accordingly, the mobile terminal MS3 transmits an outgoing call including the telephone number of the existing mobile terminal 120 to the mobile communication network (S701).

The call originating from the mobile terminal MS3 is transmitted to the originating exchange MSC3, and the originating exchange MSC3 receives the called party's telephone number included in the originating call, that is, the telephone number of the existing mobile terminal 120. Incoming location information is queried to the home location register 160 (HLR2) (S703).

The home location registers 160 (HLR2) receiving the incoming location information query check whether the existing mobile terminal 120, which is the called party terminal, is switched to the terminal (S705). If the existing mobile terminal 120 is not switched to the terminal, the home location register 160 (HLR2) proceeds the call processing to the switch 140 (MSC2) where the existing mobile terminal 120 is located according to a general call processing procedure. .

On the other hand, when the existing mobile terminal 120, which is the called terminal, is switched to the terminal, the home location register 160 (HLR2) has a terminal switching activation code registered in the profile of the existing mobile terminal 120 and the switching target mobile terminal 110. Since the IMSI and the MSISDN are registered, the home location register 160 (HLR2) checks the IMSI of the switching target mobile terminal 110 in the profile of the existing mobile terminal 120 and moves the switching target using the checked IMSI. Check the exchange 130 (MSC1) information of the terminal 110. However, since the location information of the switching target mobile terminal 110 is not registered, the home location register 160 (HLR2) switches to the home location register 150 (HLR1) that accommodates the switching target mobile terminal 110. The location information of 110 is queried (S707).

The home location registers 150 and HLR1 accommodating the switching target mobile terminal 110 inquire the location information of the switching target mobile terminal 110 according to the location information query, and the home location registers 160 and HLR2 display the location information. Answer the information (S709).

The home location register (160, HLR2) having confirmed the information of the exchange 130 (MSC1) in which the switching target mobile terminal 110 is located transmits a routing information request message (PRN: Provide Roaming Number) to the corresponding exchange 130 (MSC1). In operation S711, the switch 130 (MSC1) responds to the home location register 160 (HLR2) with a routing information message (MSRN: Mobile Station Roaming Number) corresponding to the routing information request message (S713). The routing information request message includes the IMSI of the switching target mobile terminal 110 and the MSISDN of the existing mobile terminal 120. The routing information includes the IMSI of the switching target mobile terminal 110 and the exchanges 130 and the MSC1. A number is included.

The home location register (160, HLR2) transmits the called location information response including routing information of the exchange 130 (MSC1) on the side of the mobile terminal 110 to be switched to the originating exchange (MSC3) (S715), The originating exchange MSC3 requests a call connection to the exchange 130 of the switching target mobile terminal 110 MSC1 according to the routing information included in the location information response (S717).

The switching unit 130 (MSC1) on the side of the switching target mobile terminal 110 performs an incoming call processing on the outgoing call to the switching target mobile terminal 110 (MS1) in accordance with the call connection of the source switching center MSC3 (S719). Accordingly, the call of the caller is processed by the mobile terminal 110 to be switched instead of the existing mobile terminal 120, and the caller makes a call with the user of the mobile terminal 110 to be switched.

8 is a flowchart illustrating a process of releasing terminal switching in a terminal switching service system according to an embodiment of the present invention.

As shown in FIG. 8, first, the mobile subscriber deactivates the terminal switching to the switching target mobile terminal 110 to use the existing mobile terminal 120 again, and the terminal switching deactivation code is applied to the switching target mobile terminal 110. (E.g., * 121) and a call button. Then, the switching target mobile terminal 110 transmits a ProcessUSSD-Request message, which is a terminal switching release request message including its IMSI (indicated by IMSI1 in FIG. 8) and an inactivation code, through the exchange 130 (MSC1). In step S801 and S803, the service location 110 receives the service profile of the home location register 150 and the HLR1.

Home location registerer 150 (HLR1) then analyzes the ProcessUSSD-Request message received via exchange 130 (MSC1). Since the ProcessUSSD-Request message includes the terminal switch deactivation code, the home location register 150 (HLR1) transmits the ProcessUSSD-Request message to the terminal switch server 170 for the terminal switch release processing (S805).

Upon receiving the ProcessUSSD-Request message from the home location register 150 (HLR1), the terminal switching server 170 finds information (IMSI, MSISDN) of the existing mobile terminal 120 based on the deactivation code included in the message. The ATM message including the identification information indicating the terminal switch release is transmitted to the home location register 160 (HLR2) accommodating the existing mobile terminal 120 (S807).

The home location register 160 (HLR2) changes the terminal switching activation code to a deactivation code in the service profile of the existing mobile terminal 120 registered therein according to the terminal switching release instruction (S809). The home location register (160, HLR2) transmits a Delete Subscriber Data (DSD) / Insert Subscriber Data (ISD) message to the switch 140 (MSC2) in which the existing mobile terminal 120 is located. Process is deleted and the existing CSI is registered (S811), and after the completion of this process, the exchange 140 (MSC2) transmits a DSD / ISD response message (S813).

Upon receiving the DSD / ISD response message, the home location register 160 (HLR2) transmits an ATM response message to the terminal switching server 170 as a processing result response (S815).

In addition, the terminal switching server 170, the home to accommodate the switching target mobile terminal 110, the ATM message including the information (IMSI1, MSISDN1) of the switching target mobile terminal 110 and identification information indicating the terminal switching release. The location register 150 transmits the data to the HLR1 (S817).

The home location register 150 (HLR1) changes the terminal switching activation code to a deactivation code in the service profile of the switching target mobile terminal 110 registered therein according to the terminal switching release instruction (S819). In addition, the home location register 150 (HLR1) transmits a Delete Subscriber Data (DSD) / Insert Subscriber Data (ISD) message to the switch 130 (MSC1) in which the switching target mobile terminal 110 is located, and thus is associated with a terminal switching service. The CSI and the additional service information are deleted and the existing CSI is registered (S821). After completion of this process, the exchange 130 (MSC1) transmits a DSD / ISD response message (S823).

Upon receiving the DSD / ISD response message, the home location register 150 (HLR1) transmits an ATM response message to the terminal switching server 170 as a processing result response (S825). The terminal switching server 170 transmits the USSD Notify message to the home location register 150 (HLR1) as a result of the terminal switching release processing (S827), and the home location register 150 (HLR1) transmits the processing result notification message to the exchange ( 130, the MSC1 is transmitted to the switching target mobile terminal 110 (S829).

9 is a flowchart illustrating a process of releasing terminal switching in the terminal switching service system according to another embodiment of the present invention.

Referring to FIG. 9, as described with reference to FIGS. 3 and 4, the mobile subscriber performs terminal switching from the existing mobile terminal 120 to the switching target mobile terminal 110, and then changes the existing mobile terminal 120 (MS2). The call is sent by using (S901). The outgoing call originating from the existing mobile terminal 120 (MS2) is transmitted to the exchange 140 (MSC2), including the called party's telephone number.

The exchange 140 (MSC2) receiving the outgoing call from the existing mobile terminal 120 checks the O-CSI in the profile information of the existing mobile terminal 120 (S903). However, O-CSI of the existing mobile terminal 120 registered in the exchanger 140 (MSC2) is set to approach the home location register 160 (HLR2) unconditionally when an outgoing call of the existing mobile terminal 120 is received. The service key of the intelligent network service is set.

Accordingly, the exchange 140 (MSC2) transmits an InitialDP message including the service key to the home location register 160 (HLR2) accepting the existing mobile terminal 120 according to the O-CSI (S905).

The home location register (160, HLR2) for accommodating the existing mobile terminal 120 retrieves a routing number (intelligent network routing number) from the profile of the existing mobile terminal 120 based on the service key included in the InitialDP message, A connect message including the routing number (RN) is returned to the switch 140 (MSC2) (S907).

The exchanger 140 (MSC2) compares the routing number included in the connection message received from the home location register 160 (HLR2) with the routing number set in the D-CSI registered in the profile of the existing mobile terminal 120 ( In operation S909, an InitialDP message including the service key set in the D-CSI is transmitted to the terminal switching server 170 (S911). Here, the service key is a key indicating a terminal switching service, and the InitialDP message includes the telephone number MSISDN of the existing mobile terminal 110.

Upon receiving the InitialDP message from the exchange 140 (MSC2), the terminal switching server 170 confirms that the terminal switching service request is made according to the service key included in the InitialDP message, and also checks the caller's telephone number included in the InitialDP message. (S913).

Since the calling party telephone number included in the InitialDP message is the telephone number of the existing mobile terminal 120, the terminal switching server 170 sends a message (continue) instructing the switch 140 (MSC2) to proceed with a general call processing procedure. It transmits (S915). Accordingly, the exchange 140 (MSC2) proceeds to the incoming call of the existing mobile terminal 120 according to the general call processing procedure.

On the other hand, the terminal switching server 170 determines that this is a terminal switching release request because the call is up from the existing mobile terminal 120, and proceeds with the terminal switching release procedure in the same procedure as described with reference to FIG. That is, the terminal switching server 170 accommodates the switching target mobile terminal 110 with an ATM message including information (IMSI, MSISDN) of the switching target mobile terminal 110 and identification information indicating the terminal switching release. The location register 150 transmits the data to the HLR1 (S919). In addition, the terminal switching server 170, the home location register for accommodating the existing mobile terminal 120, the ATM message containing the information (IMSI, MSISDN) of the existing mobile terminal 120 and identification information indicating the release of the terminal switching; In step S921, the processor 100 transmits the data to the HLR2 (160). The home location registers 150, 160, HLR1, and HLR2 change the terminal switching activation code to the deactivation code in the service profile as described with reference to FIG. Delete the service information and register the existing CSI.

As such, the terminal switching service subscriber may release the terminal switching through the mobile terminal 110 to be switched, or may release the terminal switching through the existing mobile terminal 120. When a general call is attempted with the existing mobile terminal 120, the terminal switching release process is automatically performed, thereby increasing convenience of using the existing mobile terminal 120.

While the specification contains many features, such features should not be construed as limiting the scope of the invention or the scope of the claims. Also, the features described in the individual embodiments herein can be implemented in combination in a single embodiment. Conversely, various features described herein in a single embodiment may be implemented in various embodiments individually or in a suitable subcombination.

It is to be understood that, although the operations have been described in a particular order in the figures, it should be understood that such operations are performed in a particular order as shown, or that a series of sequential orders, or all described operations, . In some circumstances, multitasking and parallel processing may be advantageous. In addition, it should be understood that the division of various system components in the above-described embodiments does not require such division in all embodiments. The above-described program components and systems can generally be implemented as a single software product or as a package in multiple software products.

The method of the present invention as described above may be embodied as a program and stored in a computer-readable recording medium (such as a CD-ROM, a RAM, a ROM, a floppy disk, a hard disk, or a magneto-optical disk). Since this process can be easily implemented by those skilled in the art will not be described in more detail.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

1 is a diagram illustrating a network configuration of a terminal switching service system according to an embodiment of the present invention.

2 is a flowchart illustrating a terminal switching service subscription process according to an embodiment of the present invention.

3 is a flowchart illustrating a process of setting a terminal switching function in a terminal switching service system according to an embodiment of the present invention.

4 is a flowchart illustrating a process of setting terminal switching in a terminal switching service system according to another embodiment of the present invention.

5 is a flowchart illustrating an outgoing call processing method in a terminal switching state according to an embodiment of the present invention.

6 is a flowchart illustrating a call call reception method in a terminal switching service according to an embodiment of the present invention.

7 is a flowchart illustrating a call call reception method in a terminal switching service according to another embodiment of the present invention.

8 is a flowchart illustrating a process of releasing terminal switching in a terminal switching service system according to an embodiment of the present invention.

9 is a flowchart illustrating a process of releasing terminal switching in the terminal switching service system according to another embodiment of the present invention.

Claims (17)

A method of setting terminal switching from a first communication terminal to a second communication terminal in a communication system, (a) receiving, by the terminal switching server, a terminal switching request message for setting terminal switching from the first communication terminal to the second communication terminal; (b) the terminal switching server transmitting a terminal switching command message to a home location register; (c) registering, by the home location register, terminal switching information in a profile of the first communication terminal and setting a trigger parameter for terminal switching outgoing call processing at an exchange at the first communication terminal; And (d) registering, by the home location register, terminal switching information in a profile of a second communication terminal and setting a trigger parameter for terminal switching outgoing call processing at an exchange of a second communication terminal; How to set up. The method of claim 1, The trigger parameter is And a service key indicating a terminal switching service and information of a home location register to be accessed when an outgoing call is received, information of a terminal switching server to be accessed for number translation of a called number. The method according to claim 1 or 2, In step (c), Registering, by the home location register, a terminal switching activation code and an identification number of the second communication terminal in a profile of the first communication terminal. The method of claim 3, wherein Before step (a), Receiving, by the home location register, a terminal switch request message including a telephone number and a service code of the first communication terminal from the second communication terminal; And And transmitting, by the home location register, the terminal switching request message to the terminal switching server based on the service code included in the terminal switching request message. A method of releasing terminal switching from a first communication terminal to a second communication terminal in a communication system, (a) receiving, by the exchange at the first communication terminal side, an outgoing call including the called number from the first communication terminal; (b) the exchange at the first communication terminal side transmitting a trigger processing request message to a terminal switching server based on a trigger parameter for terminal switching outgoing call processing set in the profile of the first communication terminal; (c) comparing, by the terminal switching server, the identification number of the first communication terminal with the identification number of the second communication terminal; (d) the terminal switching server transmitting a terminal switching release command message to a home location register when the identification numbers match; And (e) transmitting, by the terminal switching server, a message instructing an incoming call processing of the originating call to an exchange at the first communication terminal side. The method of claim 5, In step (b), Sending, by the exchange at the first communication terminal side, a trigger processing request message to the home location register based on a first trigger parameter for terminal switch originating call processing set in the profile of the first communication terminal; Receiving, by the switch at the first communication terminal side, a connection message including the routing number of the terminal switching server from the home location register; And Sending, by the switch at the first communication terminal, a trigger processing request message to the terminal switching server by using the second trigger parameter and the routing number for the terminal switching originating call processing set in the profile of the first communication terminal; Terminal switching service release method comprising a. The method according to claim 5 or 6, Deleting, by the home location register, a trigger parameter for terminal switching outgoing call processing set at an exchange on the first communication terminal side; And And deleting, by the home location register, a trigger parameter for terminal switching outgoing call processing set to the exchange at the second communication terminal. A method for processing an outgoing call of a second communication terminal in a terminal switching state from a first communication terminal to a second communication terminal in a communication system, (a) receiving, from the second communication terminal, an outgoing call from the second communication terminal by the exchange on the second communication terminal side; (b) the exchange at the second communication terminal side transmitting a trigger processing request message to a terminal switching server based on a trigger parameter for terminal switching outgoing call processing set in the profile of the second communication terminal; (c) receiving, at the second communication terminal side, the exchange message from the terminal switching server, the connection message including the identification number of the first communication terminal as an outgoing replacement number; And (d) the exchange at the second communication terminal side setting the identification number of the first communication terminal included in the connection message as an originating alternative number as an originating number to process the incoming call; How call calls are handled by the transition service. The method of claim 8, Receiving, by the switch at the second communication terminal side, a charging processing message including the identification number of the first communication terminal as the charging number from the terminal switching server; And In the terminal switching service of the second communication terminal, processing the charging for the outgoing call by using the identification number of the first communication terminal included in the charging processing message; How to handle call calls. 10. The method according to claim 8 or 9, In step (b), Sending, by the exchange at the second communication terminal side, a trigger processing request message to a home location register based on a first trigger parameter for terminal switch originating call processing set in the profile of the second communication terminal; Receiving, by the switch at the second communication terminal side, a connection message including the routing number of the terminal switching server from the home location register; And Sending, by the switch at the second communication terminal, a trigger processing request message to the terminal switching server by using the second trigger parameter and the routing number for the terminal switching originating call processing set in the profile of the second communication terminal; Call call processing method in the terminal switching service comprising a. A method for processing an outgoing call from a third communication terminal to the first communication terminal in a communication system providing a terminal switching service from a first communication terminal to a second communication terminal, (a) receiving, by the home location register on the first communication terminal side, a called location information query message for the first communication terminal from the switch on the third communication terminal side; (b) checking, by the home location register on the first communication terminal side, whether the first communication terminal is in a terminal switching state; (c) In the terminal switching state, the home location register on the first communication terminal checks the information of the second communication terminal in the profile of the first communication terminal and queries the location information with the home location register on the second communication terminal. Sending a message; (d) the home location register on the first communication terminal side receives a location information response message from the home location register on the second communication terminal side, and inquires routing information to the exchange on the second communication terminal side based thereon. Receiving a routing information response accordingly; (e) transmitting, by the home location register on the first communication terminal side, routing information to the exchange on the second communication terminal side to the exchange on the third communication terminal side; And (f) receiving, by the exchange at the second communication terminal, a call connection request for the first communication terminal from the exchange at the third communication terminal, and performing an incoming process to the second communication terminal; How to handle call calls in your service. The method of claim 11, Before step (a), Receiving, by the terminal switching server, a terminal switching request message for setting terminal switching from the first communication terminal to the second communication terminal; Sending, by the terminal switching server, a terminal switching command message to a home location register on the first communication terminal side and a home location register on the second communication terminal side; Registering, by the home location register of the first communication terminal, a terminal switching activation code and information of the second communication terminal in a profile of the first communication terminal; And And registering, by the home location register on the side of the second communication terminal, a terminal switch activation code and information on the first communication terminal in a profile of the second communication terminal. A terminal switching service system for providing a terminal switching service from a first communication terminal to a second communication terminal in a communication system, A terminal switching server that performs terminal switching service logic in response to receiving a terminal switching request message sent from the second communication terminal; Upon receiving the terminal switching command from the terminal switching server, the terminal switching activation code and the information of the second communication terminal are registered in the profile of the first communication terminal, and the terminal switching activation code and the first communication are in the profile of the second communication terminal. A home location register for registering information of the terminal; And A terminal switching service comprising: a switch on a second communication terminal side for registering a trigger parameter for terminal switching outgoing call processing and information on a first communication terminal in a profile of a second communication terminal according to a message received from the home location register; system. The method of claim 13, The switch on the second communication terminal side transmits a trigger processing request message to the terminal switching server based on the trigger parameter when receiving the outgoing call including the called number from the second communication terminal, The terminal switching server, in response to the trigger processing request message, the terminal, characterized in that for transmitting a connection message including the identification number of the first communication terminal as an outgoing alternative number to the switchboard of the second communication terminal side. Transition service system. The method according to claim 13 or 14, The home location register, For a called location information query for the first communication terminal from the exchange at the third communication terminal side, sending a called location query response including the location information of the second communication terminal to the switch at the third communication terminal side, The switch of the second communication terminal side, Upon receiving a call connection request for the first communication terminal based on the called location query response from the exchange at the third communication terminal side, based on the information of the first communication terminal registered in the profile of the second communication terminal; And a call connection request is received by the second communication terminal. The method of claim 13, And a switch on the first communication terminal side that registers a trigger parameter for terminal switching outgoing call processing and information on the second communication terminal in a profile of the first communication terminal according to the message received from the home location register. The switch on the first communication terminal side transmits a trigger processing request message to the terminal switching server based on the trigger parameter when receiving an outgoing call including a called number from the first communication terminal, And the terminal switch server transmits a terminal switch release command to the home location register in response to the trigger processing request message. The method of claim 16, The home location register, And changing the terminal switching activation code set therein to the deactivation code according to the terminal switching releasing command, and deleting the trigger parameters registered in the switch at the first and second communication terminals, respectively.

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