KR100370381B1 - Method for switching service in mobile communication system - Google Patents

Abstract

The present invention provides a method of switching a service in a mobile communication system, and more particularly, a mobile communication system that enables the switching of an ongoing voice service to a data service without interruption of a call by using a service change message during a voice service between mobile terminals through a mobile network. In the service switching method according to the present invention, the service switching method in the mobile communication system according to the present invention, as well as to ensure the convenience of the user by eliminating the cumbersome procedure according to the data service of the general subscribers, Therefore, there is an excellent effect that can provide users with a more convenient mobile communication service.

Description

Service switching method in mobile communication system {METHOD FOR SWITCHING SERVICE IN MOBILE COMMUNICATION SYSTEM}

The present invention relates to a service switching method in a mobile communication system, and more particularly, it is possible to convert a voice service in progress to a data service without interruption of a call by using a service change message during voice service between mobile terminals through a mobile network. A service switching method in a mobile communication system.

In the conventional mobile communication system, when the mobile network user wants to change to the data service while the mobile network user performs the voice service, the service switching method first terminates the voice service call in which the existing service is in progress and then returns the data service call. The setting method was used.

However, when the ongoing voice service is converted to the data service using the conventional method as described above, the subscriber is terminated after the existing voice service is established and the data service call is established again. There is an inconvenience in that a cumbersome procedure occurs in the use of their data services, and thus there is a problem in that they cannot provide a smooth mobile communication service to mobile network users who want to use a voice service and a data service successively.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a mobile communication service that is more convenient for users by enabling an ongoing voice service to be converted into a data service without interruption of a call. The present invention provides a method of switching a service in a mobile communication system.

In order to achieve the above object, a service switching method in a mobile communication system of the present invention includes a mobile terminal for generating a service change message; A control station that receives a service change message from the mobile terminal and outputs the service change message; A mobile switch having an ASS-M, an ASS-T, an ICC, and an IWI, and an ASS-IWF and IWF equipment that receive a service change message from the control station and perform a processing operation corresponding to the service change message. ; And a service switching method of a service switching device in a mobile communication system having a PSTN,

A first step in which an ASS-M in the mobile exchange receives a service change message from the control station;

A second step of determining, by the ASS-M, whether the service change message received from the control station is a data change message indicating a change from a voice service to a data service;

A third step of the ASS-M attempting to connect a frame relay call to an ASS-IWF in the mobile exchange if the service change message received from the control station in the second step is a data change message;

A fourth step of receiving, by the ASS-T in the mobile exchange, service change message information from the ASS-M;

A fifth step of analyzing, by the ASS-T, service change message information received from the ASS-M and determining whether the analyzed result is data change message information indicating a change from a voice service to a data service;

A sixth step in which the ASS-T attempts to access an ISDN PRI call to the ASS-IWF if the service change message information received from the ASS-M is data change message information in the fifth step; And

The ASS-IWF receives a frame relay call and an ISDN PRI call attempt from the ASS-M and ASS-T, and simultaneously connects the corresponding data service call.

1 is a functional block diagram showing a configuration of a service switching device in a mobile communication system according to an embodiment of the present invention;

2 is a signal flow diagram illustrating a process of a service switching device in a mobile communication system according to an embodiment of the present invention;

3 is an operation flowchart illustrating a service switching method in a mobile communication system according to an embodiment of the present invention;

FIG. 4 is an operation flowchart illustrating the seventh step in detail in the service switching method in the mobile communication system of FIG. 3.

<Explanation of symbols for the main parts of the drawings>

100: mobile terminal 200: control station

300: mobile exchange 310: ASS-M

320: ASS-T 330: ASS-IWF

331: ICC 332: IWI

340: IWF Equipment 400: PSTN

Hereinafter, a service switching method in a mobile communication system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a functional block diagram of a service switching device in a mobile communication system according to an embodiment of the present invention, the service switching device in a mobile communication system according to an embodiment of the present invention comprises a mobile terminal (100); Control station 200; ASS-M (Access Switching Subsystem-Mobile) (hereinafter referred to as ASS-M) (310), ASS-T (Access Switching Subsystem-Trunks; referred to as ASS-T) (320), ICC (Interwork function Call Control) (Hereinafter referred to as ICC)) 331 and IWI (Inter Working Interface; hereinafter referred to as IWI) 332 with an Access Switching Subsystem-Inter Working Function (hereinafter referred to as ASS-IWF). 330, and a mobile exchanger having an Inter Working Function (IWF) equipment 340; And a Public Switched Telephone Network (hereinafter referred to as a PSTN) 400.

The mobile terminal 100 generates a service change message according to a user's selection of a voice service and then outputs the service change message to the control station 200.

Meanwhile, the control station 200 receives a service change message from the mobile terminal 100, performs and prepares a process corresponding to the service change message, and sends the service change message to the mobile switcher 300. It serves to transmit to my ASS-M (310).

If the ASS-M 310 mounted in the mobile switch 300 receives a service change message from the control station 200 and the service change message indicates a change from voice service to data service, After attempting to connect a Frame Relay call to the ICC 331 in the ASS-IWF 330, the service change message information is transmitted to the ASS-T 320 in the mobile switch 300, and the service If the change message is not a message informing the change from the voice service to the data service, it plays a role of maintaining a corresponding processing operation and resources of the existing voice service.

Meanwhile, the ASS-T 320 installed in the mobile switch 300 receives service change message information from the ASS-M 310 and simultaneously corresponds to an Integrated Service Digital Network (ISDN) Primary Rate Interface (PRI). It attempts to connect a call to the ICC 331 in the ASS-IWF 330, and is connected to the PSTN 400 to serve as an interface with the network.

The ICC 331 in the ASS-IWF 330 is in charge of the interworking function with the IWF for wireless data call connection, and generates basic data for charging and statistics child state management functions occurring during call control. It receives a frame relay call and an ISDN PRI call attempt from ASS-M 310 and ASS-T 320 and transmits the frame relay and ISDN PRI to the IWI 332 through respective paths. .

Meanwhile, the IWI 332 in the ASS-IWF 330 receives a frame relay and an ISDN PRI from the ICC 331 and simultaneously interfaces the frame relay and the ISDN PRI to the IWF device 340. .

The IWF equipment 340 mounted in the mobile switch 300 receives a frame relay and an ISDN PRI from the IWI 332 and simultaneously connects a corresponding data service call.

On the other hand, the PSTN 400 is connected to the ASS-T 320 in the mobile switch 300 to perform a network connection function with the mobile switch 300.

2 is a signal flow diagram illustrating a process of a service switching device in a mobile communication system according to an embodiment of the present invention.

Next, a service switching method in the mobile communication system according to an embodiment of the present invention using the service switching device in the mobile communication system having the above configuration will be described.

3 is an operation flowchart illustrating a service switching method in a mobile communication system according to an embodiment of the present invention.

First, the ASS-M 310 in the mobile switch 300 receives a service change message from the control station 200 (S1).

Then, the ASS-M 310 determines whether the service change message received from the control station 200 is a data change message notifying change of voice service to data service (S2).

At this time, if the service change message received from the control station 200 in the second step (S2) is a data change message, the ASS-M 310 to the ASS-IWF 330 in the mobile switch 300. A frame relay call connection is attempted (S3).

Thereafter, the ASS-T 320 in the mobile switch 300 receives service change message information from the ASS-M 310 (S4).

Subsequently, the ASS-T 320 analyzes the service change message information received from the ASS-M 310 and then determines whether the analysis result is data change message information indicating a change from the voice service to the data service. Determine (S5).

At this time, if the service change message information received from the ASS-M 310 in the fifth step (S5) is data change message information, the ASS-T 320 is an ISDN PRI call to the ASS-IWF (330) Attempt to connect (S6).

Thereafter, the ASS-IWF 330 receives a frame relay call and an ISDN PRI call attempt from the ASS-M 310 and the ASS-T 320 and simultaneously connects a corresponding data service call (S7). ).

On the other hand, if the service change message received from the control station 200 in the second step (S2) is not a data change message, the ASS-M 310 continues to perform a voice service processing operation (S8). .

On the other hand, if the service change message information received from the ASS-M in the fifth step (S5) is not data change message information, the ASS-T 320 continues to perform a voice service processing operation (S9). .

In this case, the detailed operation process of the seventh step S7 will be described in more detail with reference to FIG. 4 as follows.

First, the ICC 331 in the ASS-IWF 330 receives a frame relay call connection from the ASS-M 310 (S7-1).

Subsequently, the ICC 331 receives an ISDN PRI call connection from the ASS-T 320 (S7-2).

Thereafter, the ICC 331 distinguishes the frame relay call and the ISDN PRI call received from the ASS-M 310 and the ASS-T 320, and simultaneously transfers the frame relay and the ISDN PRI through each path. Transmitting to the IWI 332 (S7-3).

Then, the IWI 332 receives the frame relay and the ISDN PRI from the ICC 331 and simultaneously interfaces the frame relay and the ISDN PRI to the IWF device 340 (S7-4).

Thereafter, the IWF device 340 receives a frame relay and an ISDN PRI from the IWI 332 and simultaneously connects a corresponding data service call (S7-5).

As described above, according to the service switching method in the mobile communication system according to the present invention, it is possible to switch the voice service in progress to the data service without interruption of the call by using the service change message during the voice service between mobile terminals through the mobile network. As a result, as well as ensuring the convenience of the user by eliminating the cumbersome procedures associated with the use of data services by general communication subscribers, there is an excellent effect that can provide a more convenient mobile communication services to users.

Claims (4)

A mobile terminal for generating a service change message; A control station that receives a service change message from the mobile terminal and outputs the service change message; A mobile switch having an ASS-M, an ASS-T, an ICC, and an IWI, and an ASS-IWF and IWF equipment that receive a service change message from the control station and perform a processing operation corresponding to the service change message. ; And a service switching method of a service switching device in a mobile communication system having a PSTN, A first step in which an ASS-M in the mobile exchange receives a service change message from the control station; A second step of determining, by the ASS-M, whether the service change message received from the control station is a data change message indicating a change from a voice service to a data service; A third step of the ASS-M attempting to connect a frame relay call to an ASS-IWF in the mobile exchange if the service change message received from the control station in the second step is a data change message; A fourth step of receiving, by the ASS-T in the mobile exchange, service change message information from the ASS-M; A fifth step of analyzing, by the ASS-T, service change message information received from the ASS-M and determining whether the analyzed result is data change message information indicating a change from a voice service to a data service; A sixth step in which the ASS-T attempts to access an ISDN PRI call to the ASS-IWF if the service change message information received from the ASS-M is data change message information in the fifth step; And In the mobile communication system characterized in that the ASS-IWF receives a frame relay call and ISDN PRI call attempt from the ASS-M and ASS-T, and at the same time connect the corresponding data service call How to switch services. The method of claim 1, And if the service change message received from the control station in the second step is not a data change message, the ASS-M further includes an eighth step of continuously performing a voice service processing operation. How to switch services on The method of claim 1, If the service change message information received from the ASS-M is not data change message information in the fifth step, the ASS-T further includes a ninth step of continuously performing a voice service processing operation; A service switching method in a mobile communication system. The method of claim 1, The seventh step may include: a seventh step in which an ICC in the ASS-IWF receives a frame relay call connection from the ASS-M; Step 7-2 of the ICC receiving an ISDN PRI call connection from the ASS-T; A step 7-3 in which the ICC distinguishes the frame relay call and the ISDN PRI call received from the ASS-M and the ASS-T and transmits the frame relay and the ISDN PRI to the IWI through each path; Step 7-4 of the IWI receiving the frame relay and the ISDN PRI from the ICC and interfacing the frame relay and the ISDN PRI with the IWF equipment; And And a seventh to seventh step in which the IWF device receives a frame relay and an ISDN PRI from the IWI and simultaneously connects a corresponding data service call.